Special plan for safe construction

Special plan for safe construction (1)

1. Strictly implement the provisions of various safety regulations and operating procedures, and abide by the "six disciplines" of safety inspections. People sit on the derrick gondola at any time.

2. All construction electricity must implement the "three-phase four-wire system" and the three-level safety protection system, with one machine, one gate, and one chip. People who do not understand electrical appliances are strictly prohibited from connecting indiscriminately. Wires and running machinery.

3. Safety technical education must be carried out for new workers entering the workplace, with a three-level education system (i.e. branch, project department, team), and firmly establish the safety concept of "safety first, prevention first" The idea is that electricians, welders, crane drivers, operators, scaffolders and other special publics should be trained in special types of work and then go to work with certificates.

4. Conscientiously implement the on-site fire safety responsibility system and achieve a three-level fire safety responsibility system (company, branch,) project department, canteen, dormitory, and temporary facilities with 2 conventional fire extinguishers per 100 square meters. Establish a system for using open flames, do a good job in approval, and bring "two certificates" (special work operation certificate, fire approval permit) and a fire extinguisher when operating, and implement fire guardians.

5. Set up safety canopies and safety protection sheds along the plane around the building. The roof of the shed must be laid in double layers. Safety nets should be set up from the second floor, and one every fourth floor upwards. At the same time, a safety net will be set up that will increase with the construction height. The outside is high and the inside is low. Supports are provided every 3 meters. The vertical net is more than 1 meter higher than the construction layer. The seams between the nets are tight and the gaps are no more than 10 cm.

6. (A): The "Three Treasures" refer to: safety helmet, safety belt, and safety net. "Four exits" refers to: safety passage entrance, stairway entrance, reserved hole and pit, and elevator entrance.

(B): Use labor protection supplies correctly.

(C) There should be a sign saying "You must wear a safety helmet when entering the construction site" at the entrance and exit gates of the site. Wear helmets according to the usage specifications, fasten the helmet straps, and do not throw, litter, use for sitting or cushioning, and do not use helmets with missing or damaged straps.

(D) Safety belts are required as required. Safety belts must be fastened when working at heights. When used, they should be hung high and low, and hung high on a solid and reliable object. After use, a dedicated person should be responsible for proper maintenance. Check regularly. If mildew, hardness, brittleness, breakage, etc. are found, replace them in time.

(E) It is required to set up a safety net. Its quality must conform to the brand of products recognized by the safety supervision station, and there must be a qualified label on the net. The construction layer of the net should be more than 1.2 meters, the nets should be spliced ??tightly, and the gaps should not be larger than 10 centimeters.

(F) On-site attention should be paid to the protection of the "four ports" along the edge. The protective bolts should be made of steel pipes painted in red and white as protective materials.

(G) Install strong temporary protective railings or fences on the edges of stair steps and platforms.

(H) The protection of reserved hole pits and wells must be with strict protective covers. There should be two protective railings around the hole more than 1.5 meters long, and a safety net should be hung on the hole.

(I) Double-layer protective sheds should be erected at building entrances and exits, safety passages, adjacent construction areas, places and mechanical equipment that pose a threat to people or objects. The sheds should be wider than the same entrances, and double-layer protective sheds should be laid on top of the sheds. Layer of protective foot sheet.

(J) Safety signs shall be hung at each entrance and exit.

(K) Edge protection on balconies, floors, roofs, etc. must be tightly sealed with two protective railings or high-hanging safety nets.

(L) For edge maintenance of the construction floor, use infill walls to build up to the window sill for maintenance or double-track tie rod protection.

7. Erection and dismantling of the derrick:

(A) The base of the wall-attached derrick must be placed on a hard foundation, and the base must be firmly rolled with rolling piles. The upper part of the rolling pile must be in contact with the The derrick chassis is firmly connected.

(B) The derrick should be supported by steel and firmly connected to the building. The attached wall stalks of the derrick should not be attached to the scaffolding.

(C) The columns of the derrick should be vertically stable, and their vertical deviation should not exceed one thousandth of the height. The joints should be staggered from each other. There should be no more than 2 joints on the same plane. The derrick guide pulley and the winch The distance from the drum should not be greater than 20 times the length of the roll.

(D) The width of the derrick transportation channel must be no less than 1 meter, the resting point must be firm, protective railings must be installed on both sides of the channel, and safety doors or safety fences must be installed.

(E) A double-layer isolation protective barrier must be installed around the lower level of the derrick and at the entrance of the passage, and a safety net must be bolted around the derrick.

(F) The derrick must be equipped with reliable lightning protection and grounding devices. The hoist should be grounded separately and equipped with a rain cover. The hoist should be started by inching.

(G) The derrick gondola must be equipped with an anti-fall device, a top limiter and a safety door. Safety nets are installed on both sides of the gondola. The height must not be more than 1 meter to prevent trolleys and other objects from overturning. fall.

(H) The derrick basket and each floor must have eye-catching signaling devices or signs.

(I) It is strictly prohibited to dismantle the derrick’s flat braces, diagonal braces, cable braces, etc. at will.

(J) When dismantling the derrick, the support of the lower tunnel should be reinforced first.

(K) Set up a warning zone for the erection and disassembly of the shaft, and designate a dedicated person to take charge. Operators must wear safety belts.

On-site management:

1. Develop "civilized construction and safety production inspection system", "construction site reward and punishment system", "dormitory management system", "construction site security and protection system" ", "Fire Management and Inspection System" and other on-site rules and regulations, and establish an on-site civilized construction management team.

2. Special work types such as masonry, carpentry, steelwork, mechanics, electricians, and shelf workers must be trained and employed with certificates.

3. First aid kits and commonly used first aid drugs are provided on site, and heatstroke prevention drugs are distributed in summer.

4. Set up two fire extinguishers in front of the on-site office, two fire extinguishers in the canteen, two fire extinguishers in the carpentry room, two fire extinguishers in each floor of each dormitory building, and two fire extinguishers in the warehouse. Construction Each operation floor on site is equipped with two fire extinguishers.

Special plan for safe construction (2)

Section 1 Safety requirements for steel bar transportation and stacking

1. When manually moving steel bars, the steps must be consistent. When going up or down slopes (bridges) or turning, follow the steps forward and back, and walk slowly and slowly. Pay attention to the head and tail swing of the steel bars to prevent them from hitting objects or hitting people, especially the upper and lower wires around them. Greet each other and pay attention to safety when loading or unloading.

2. When manually transferring steel bars vertically, the feeder should stand on a firm and flat ground or temporary structure. The receiver should have a protective railing or a solid object to prevent forward leaning. If necessary, hang a safety bring.

3. When mechanically lifting steel bars vertically, they should be tied firmly and the lifting points should be located at both ends of the steel tendons. When there are difficulties, a lifting point should be set up at the center of gravity of the bundle of steel bars. The steel bars should rise smoothly and should not be lifted overweight.

4. When lifting steel bars or steel frame, no one is allowed to stand below. Only when the steel frame has landed to the ground or within 1m of the installation elevation can people approach the operation. After the steel frame is stabilized or supported, Only then can the hook be removed.

5. Temporary stacking of steel bars should not be excessively concentrated, and the load-bearing capacity of the formwork or bridge should be considered. It is strictly prohibited to stack steel bars before the newly poured floor concrete has solidified and reached a strength of 1.2Mpa.

6. When transporting and storing steel bars, labels must be retained and stacked neatly by batch to avoid corrosion and contamination.

7. Be careful not to touch the steel bars to the power supply. It is strictly forbidden to bring the steel bars close to high-voltage lines. The safe distance between the steel bars and the power supply lines should comply with Articles 8 and 9 of Section 4 of Chapter 1 "General Provisions" of Chapter 2. Require.

Section 2 Safety Requirements for Steel Bar Production

1. Safety Requirements for Steel Bar Processing

1. When removing rust from steel bars, operators must wear protective glasses and masks , gloves and other protective equipment, and tie the cuffs tightly.

2. When using electric rust removal, you should first check whether the wire brush is loose, check whether the insulation and grounding of the closed protective cover device, vacuum equipment and electrical equipment are good to prevent mechanical damage. and electric shock accidents.

3. When feeding materials, the operator must operate sideways and is strictly prohibited from standing directly in front of the rust remover; two people are required to remove rust from long materials, responding to each other and cooperating closely.

4. When unfolding the round steel bar, both ends should be firmly clamped. When cutting, step on it with your feet first to prevent rebound and hurt people.

5. Before straightening the steel bars manually, all tools should be checked; the workbench should be firm, the anvil should be stable, the wooden handle of the hammer should be solid and firm, and the hammer should not have broken heads or chips, because The hammer head that has become scratched due to impact must be replaced in time.

6. Straighten the steel bars, the clamps must be secure, and the ground anchors must be strong and secure. Pedestrians are prohibited within the 2m area along the tie bars. When straightening by manual twisting and grinding, it is not allowed to touch the push rod with the chest or belly, and the steps must be consistent and steady, and the push rod must be loosened slowly. Do not loosen it all at once to avoid rebounding and hurting people.

7. When cutting materials manually, the tools must be firm. Operators of hammers and hammers should stand at an angle and pay attention to people and objects in the hammer area.

8. Cut steel bars shorter than 30cm and clamp them firmly with pliers. The handle of the pliers should not be shorter than 50cm. It is prohibited to hold it with your hands, and a protective box should be installed outside.

9. When bending steel bars, hold the wrench tightly, stand firm, and keep your body balanced to prevent the steel bars from breaking or loosening.

10. Steel materials, semi-finished products, etc. should be stacked neatly according to specifications and varieties, and the production site should be level. The working platform must be stable, and lighting fixtures must be equipped with mesh covers.

2. Safety requirements for cold treatment of steel bars

1. A protective baffle should be installed in front of the cold-drawing winding machine. If there is no baffle, the winding machine should be 900 degrees from the cold-drawing direction. , and use closed guide pulleys. During operation, you must stand behind the protective baffle, and no one is allowed to stand or pass through the cold drawing site.

2. The cold-drawn steel bars must be clamped, and then send a start signal after leaving. When slipping or other problems are discovered, the machine must be stopped first and the steel bars can be relaxed before the operation can be resumed.

3. Cold-drawn and tensioned steel bars must be carried out in strict accordance with the specified stress and elongation, and shall not be changed at will. Regardless of whether the steel bars are stretched or relaxed, the steel bars should be stretched slowly and evenly. If any abnormality is found in the oil pump, jack, or anchor card, the tensioning should be stopped immediately.

4. Tension steel bars should be provided with protective baffles at both ends. The steel bars must be protected after tensioning, and it is prohibited to place heavy objects or walk on them. When pouring concrete, prevent the vibrator from impacting the prestressed steel bars.

5. The jack feet must be aligned with the components and placed flat. When measuring the tensile length, adding wedges and tightening bolts, stop stretching first and stand on both sides to prevent steel bars from breaking and rebound injuries. people.

6. When the same component has prestressed and non-prestressed steel bars, the prestressed steel bars should be stretched twice, and the first time should be stretched to 70%~80% of the control stress. After the non-prestressed steel bars are After being tied, pull it to the specified stress value.

7. When electrothermal tensioning is used, the electrical circuit must be installed by a certified electrician, and the wire connection points should be wrapped and not exposed. When tensioning, the voltage must not exceed the specified value.

8. When the electric heating tension reaches the tensile stress value, the power should be cut off first, and then anchored. If the operation is live, insulating shoes and insulating gloves should be worn. During the cooling process of the steel bars, no one is allowed to stand on both ends.

3. Safety requirements for steel bar welding

1. The electrical equipment, operating mechanism and cooling system of the welding machine must be inspected before work, and a test pen must be used to check whether there is any leakage in the body shell.

2. The welding machine should be placed indoors and in a dry place. The machine body should be stable and firm, and no flammable items are allowed around it.

3. When operating, the operator should wear protective equipment such as protective glasses and gloves, and should stand on a rubber plate or wooden board. It is strictly forbidden to sit on a metal chair.

4. Before welding, the voltage should be adjusted according to the cross-section of the steel bar to adapt to the cross-section of the welded steel bar. It is prohibited to weld steel bars that exceed the diameter specified by the machine. If leakage of the welding head is found, it should be replaced immediately and use is prohibited.

5. The contact points and electrodes (steel heads) of the welding machine circuit breaker must be inspected and repaired regularly. The contact points of the circuit breaker should generally be wiped clean with sandpaper every 2 to 3 days, and the electrodes (steel heads) should be filed regularly. All bolted connections in secondary circuits should be tightened regularly to avoid overheating. Always pay attention to the temperature of the cooling water not exceeding 400C.

6. When welding long steel bars, brackets should be installed.

7. Freshly welded steel should be placed flat to avoid deformation during the cooling process.

( ) The storage location must not be near flammable items, and a place where no one travels must be selected or a protective fence must be installed.

8. The work shed should be constructed with fireproof materials. It is strictly prohibited to store flammable and explosive items in the shed, and fire extinguishing equipment must be provided.

Section 3 Safety Requirements for Binding and Installation of Steel Bars

1. When tying the foundation steel bars, steel brackets or horse stools should be placed to set up the upper steel bars according to the construction design regulations, and no arbitrary installation is allowed. Reduce the stand or horse stool. Before operation, check whether the soil walls and supports of the foundation pit are firm.

2. When tying columns and wall steel bars, you are not allowed to stand on the steel frame to operate or climb up or down the frame. The column reinforcement is within 4m and is not heavy. It can be tied on the ground or floor and erected as a whole. When the column reinforcement is more than 4m, a workbench should be set up. The skeletons of columns, walls, and beams should be tightened with temporary supports to prevent them from toppling over.

3. When tying and installing steel bars at high places, be careful not to stack the steel bars on the formwork or scaffolding. Especially for cantilever components, check whether the support is firm.

4. Trimming or bending thick steel bars at high places should be avoided as much as possible. When operations are necessary, safety belts should be hung, the location should be chosen, and people should stand firm.

5. When tying steel bars and installing skeletons at high places and deep pits, scaffolding and horse trails must be set up. Safety belts must be hung when there is no operating platform.

6. When tying the steel bars of ring beams, overhangs, exterior walls, and side columns of high-rise buildings, external scaffolding or safety nets should be set up, and safety belts should be hung when tying them.

7. When installing tied steel bars, the steel bars must not collide with the wires. When mobile lighting is required for deep foundation or night construction, the voltage of the walking lights should not exceed 36V.

Section 4 Safety Requirements for the Use of Steel Engineering Machinery

1. General Safety Requirements

1. Steel processing machinery is powered by electric motors and hydraulic pressure, and uses winches as the Auxiliary equipment shall be implemented in accordance with relevant regulations.

2. The installation of the machinery must be solid and stable and maintain a horizontal position. Stationary machinery should have a reliable foundation, and mobile machinery should wedge the running wheels tightly when operating.

3. A machine shed should be set up for outdoor operations, and there should be a place for stacking raw materials and semi-finished products next to the machine.

4. When processing long steel bars, special personnel should be provided to help and follow the personnel's instructions. Do not push or pull at will.

5. Electric machinery should be well grounded. The power cord is not allowed to be directly connected to the button. A separate switch box should be installed.

6. After the operation, the finished products should be stacked. Clean the site, cut off the power supply, and lock the switch box.

2. Safety requirements for the use of steel bar straightening machines

1. The material rack and trough should be installed straight and aligned with the center line of the guide tube, straightening tube and lower cutter hole. Do not stack objects on the machine to prevent the machine from falling off the machine due to vibration and causing an accident.

2. Turn the flywheel by hand, check the transmission mechanism and working device, adjust the gap, tighten the bolts, and after confirming that it is normal, start the idling operation; check that the bearings should have no abnormal noise, and the gear meshing is good. Wait until the operation is normal. After that, you can work.

3. According to the diameter of the straightening steel bar, select the appropriate straightening block and transmission speed. Only after passing the debugging can the material be fed. Straightening of steel bars shorter than 2m or with a diameter greater than 9mm should be performed at low speed.

4. Do not feed materials before the straightening block is fixed and the protective cover is not covered. It is strictly prohibited to open the protective covers and adjust the gaps during operation.

5. The non-straight material head should be cut off before feeding, and a 1m long steel pipe should be installed in front of the guide tube. The steel bar must first pass through the steel pipe and then be sent into the guide hole at the front end of the straightening.

6. When the steel bar is fed into the pressing roller, the hand and the roller must keep a certain distance and must not get close. It is strictly prohibited to operate with gloves.

7. When the steel bar is adjusted to the end, personnel must move out of the way to prevent the steel bar from swinging and injuring people.

8. During work, you should always pay attention to the temperature of the rotating shaft. If the temperature rises above 60°C, the machine must be stopped to find out the cause.

9. After the operation, the straightening block should be loosened and returned to its original position, and the preload spring must be returned to its original position.

3. Safety requirements for the use of steel bar cutting machines

1. The work table for feeding and receiving materials should be kept level with the lower part of the cutter. The length of the work table can be determined according to the length of the material being processed.

2. Before starting, you must check whether the blade is installed correctly, the cutter should have no cracks, the blade holder bolts are tight, and the protective cover should be firm. Then turn the pulley by hand, check the gear meshing gap, and adjust the cutter gap. The horizontal gap between the fixed knife and the movable knife should be 0.5~1mm.

3. After starting, run it dry first, and check that all transmission parts and bearings are operating normally before operation.

4. Material must not be cut when the machine does not reach the normal speed. When cutting material, the middle and lower parts of the cutter must be used, and the steel bar should be held tightly. When the movable knife retreats, the steel bar should be fed into the knife edge. , to prevent the end of the steel bar from swinging or popping out and injuring people.

5. Do not cut steel bars or red-hot steel bars whose diameter and strength exceed those specified on the machine nameplate. When cutting multiple steel bars at one time, the total cross-sectional area should be within the specified range.

6. When cutting low-alloy steel, the cutter should be replaced with a high-hardness cutter, and the diameter should comply with the nameplate regulations.

7. When cutting short materials, the distance between the hand and the cutter should be kept above 150mm. If the hand grip is less than 400mm, use a casing or clamp to press or clamp the short end of the steel bar. When one end of the cutter is less than 300mm, it must be clamped with a clamp before cutting to prevent it from popping out and injuring people.

8. Someone should hold the steel bar when cutting it into long lengths, and the movements should be consistent during the operation, and should not be dragged at will.

9. During operation, it is strictly forbidden to use your hands to directly remove short-end steel bars and debris near the cutter. No one should stay around the swinging steel bar or near the cutting knife.

10. If you find that the machine is not operating normally, making abnormal noises or the cutter is skewed, you should immediately stop the machine for maintenance.

11. When using the electric hydraulic steel bar cutting machine, first loosen the oil release valve, run it without load for a few minutes, drain the air in the cylinder, then tighten it, and pull the steel bar by hand to give the movable knife return pressure. , you can start working.

12. The cut steel bars should be stacked neatly to prevent the cuts from protruding and accidental kicking.

13. After operation, use a steel brush to remove debris between the cutters and clean and maintain the entire machine.

IV. Safety requirements for the use of steel bar bending machines

1. The workbench and bending machine table should be kept level, and various mandrels and tools should be prepared.

2. Install the mandrel, forming shaft, iron stop or variable stop frame according to the diameter and bending radius of the processed steel bar. The diameter of the mandrel should be 2.5 times the diameter of the steel bar.

3. Check that the mandrel, block, and turntable are free of damage and cracks, and that the protective cover is fastened reliably. Operation can only begin after the dry operation is confirmed to be normal.

4. During operation, insert the end of the steel bar that needs to be bent into the turntable fixing pin and press it tightly with your hands. Pay attention to the position and rotation direction of the steel bar into the plug. Do not drive in the wrong direction. Check the fixation of the fuselage. The pin must be installed on the side blocking the steel bar before it can be driven.

5. When bending long steel bars, special personnel should hold them and stand outside the bending direction of the steel bars to cooperate with each other and not drag them. Turn around and bend to prevent collision with people and objects.

6. While the machine is in operation, it is strictly prohibited to replace the spindle, pins, change angles, adjust speed, etc. The turntable, refueling and cleaning must be done after it has stopped.

7. When bending steel bars, it is strictly forbidden to exceed the diameter, number and mechanical speed of the steel bars specified by this machine.

8. When bending high-strength or low-alloy steel bars, the maximum diameter should be converted according to the requirements on the machine nameplate and the corresponding mandrel should be replaced.

9. It is strictly prohibited to stand within the working radius of the bent steel bar or on the side of the fuselage without fixed pins. The bent semi-finished products should be stacked neatly, and the hooks should not be facing upward.

10. Operators of bending machines must not wear gloves.

5. Safety requirements for the use of cold-drawn steel bars

1. According to the diameter of the cold-drawn steel bar, the winch should be selected reasonably. The winch wire rope should pass through the closed guide pulley, and the position of the winch must be The operator can see the entire cold drawing site, and the distance from the cold drawing center line is not less than 5m.

2. There is a protective baffle in front of the cold drawing winch. You must stand behind the protective baffle during operation. If there is no baffle, the winch should be at right angles to the cold drawing direction.

3. Set up warning areas outside the ground anchors at both ends of the cold-drawn site, and install protective railings and warning signs. Unrelated persons are strictly prohibited from staying here. Operators must stay at least 2m away from the steel bars when working.

4. Equipment controlled by counterweights must match the pulleys and have signs indicating the rise and fall. If there are no signs, there should be a dedicated person to direct it. When the counterweight frame is lifted, the height should be limited to within 300mm from the ground, and there should be railings and warning signs around the counterweight frame.

5. Before operation, the cold-drawn clamp should be inspected. The clamp teeth must be intact, the pulleys and tractors should be lubricated and flexible, and the hooks, ground anchors and protective devices should be complete and firm. Operation can only be carried out after they are confirmed to be in good condition. . Any extremely hard or uneven steel should not be cold drawn.

6. The winch operator must see the commanding officer giving the signal and wait until all personnel leave the danger area before they can operate. Cold drawing should be carried out slowly and evenly. Pay attention to the stop signal at any time or when you see someone entering the danger zone, you should stop pulling immediately and relax the hoisting wire rope slightly.

7. Devices controlled by elongation must be equipped with obvious limit signs and must have a dedicated person responsible for command.

8. Night working lighting facilities should be located outside the tension danger zone. If they must be installed above the site, their height should exceed 5m. The light bulbs should be equipped with protective covers and the wires should be well insulated.

9. Electrical equipment must be safe and reliable, wire insulation must be good, and motor and starter shells must be grounded.

10. The setting of ground anchors and the calculation of tensile strength should be determined by the user.

11. After the operation, the hoisting wire rope should be loosened, the counterweight should be dropped, the power supply should be cut off, and the switch box should be locked.

VI. Safety requirements for the use of prestressed steel bar stretching equipment

1. Steel molds are used for tensioning, and there must be ground anchors at both ends, and they must also be equipped with clamps and anchors. , Both ends of the steel bars must be heading, and there should be protective railings and warning signs on the outside of both ends of the site.

2. Check the clamps, anchors and headings at both ends of the pulled steel bars. If there are cracks or damage, they should be repaired or replaced in time.

3. The groove of the clamp should be 0.7~1mm larger than the diameter of the steel bar to be pulled, and ensure sufficient strength to prevent the anchor from deforming.

4. Run without load, correct the indicated tonnage of the jack and pressure gauge, determine the number on the table, and compare the required tonnage and extension length of the tension steel bar. Check that there is no leakage in the oil circuit, and only operate after confirming that it is normal.

5. During operation, the operation should be smooth and even, and no one should stand at either end during tensioning. It is strictly prohibited to disassemble any parts in the hydraulic system of the stretching machine under pressure.

6. When measuring the elongation of the steel bar or tightening the nut, the stretching should be stopped first, and the operator must stand on both sides.

7. When using electric heating tensioning method to operate with electricity, you should wear insulating rubber shoes and insulating gloves.

8. When tensioning, do not touch the steel bars or steel wires with your hands or step on them.

9. After the operation, cut off the power supply and lock the switch box. All jacks are unloaded and the stretching equipment is placed at the designated location for maintenance.

VII. Safety requirements for the use of cold heading machines

1. Replace the corresponding clamps according to the diameter of the steel bar.

2. Before operation, check that there are no cracks in the mold and center punch, correct the concentricity of the upper and lower molds and the center punch, tighten all bolts, and provide safety protection.

3. After starting, run it dry first, adjust the tightness of the upper and lower molds, align the punch mold with the heading, and only start the operation after confirming that it is normal.

4. When the machine does not reach the normal speed, heading is not allowed. If the size of the heading is uneven, the gap between the punch and the fixture should be adjusted in time, and the punch guide block should always be kept sufficiently lubricated.

8. Safety requirements for the use of steel bar cold drawing machines

1. The cold drawing machine and the bearing frame should be kept level so that the main shaft and drum shaft can rotate flexibly.

2. The transmission pulleys and gears must be equipped with protective covers, the front end of the bevel gear must be equipped with a protective net, and the rear end of the mechanical workbench must be equipped with a baffle.

3. Operators’ cuffs and trousers should be tied tightly, and female workers should wear hats. Do not wear gloves when hanging the drive chain belt (thick cloth gloves should be worn when holding steel bars).

4. Before operation, the debris on the workbench should be cleared away, and there should be no obstacles on the ground and passages near the machine. Check that the connecting parts of the machine should be firm, the mold should be free of cracks, the specifications of the rolling head and the mold should match, and check the amount of bearing oil and add lubricating oil to the roller shaft hole. Then start the host and confirm that it is normal before starting the operation.

5. When cold drawing steel bars, the cold drawing diameter of each process should be carried out according to the mechanical instructions. The die aperture must not be reduced excessively. If there is no data, the aperture can be reduced by 0.5~1mm each time. When the diameter of the cold drawing mold increases after wear, it should be replaced in time.

6. First use a rolling mill (mouth) to roll the head of the steel bar into small size. During rolling, the hand should be 300~500mm away from the rolling head, and the head should be rolled into a round shape. When rolling the head, one end of the steel bar should first pass through the mold to a length of 100~150mm, and then clamp it firmly with a clamp.

7. During operation, after closing the clutch, the operator should retreat 0.5m away from the machine, keep a distance of 0.3~0.5m between hands and the roller, and stand on the right side of the roller. Direct contact with the machine is prohibited. Steel bars and rollers.

8. Sufficient lubricant (sun-dried powder mixed with lime and soapy water) should be added to the cold drawing mold frame at all times. Before the steel bar passes through the cold drawing die, a small amount of grease should be applied to lubricate it.

9. When the end of the steel bar passes through the cold drawing mold, you should immediately step on the foot brake (it is better to operate it with the foot brake) to separate the clutch, and at the same time block the end of the steel bar with a hand brake or press the end of the steel bar with a tool. , to prevent it from being bounced off and hurting people.

10. A "side-by-side shutdown device" should be installed in front of the workbench so that when the operator falls toward the workbench, the collision device will stop immediately to reduce the severity of the accident.

11. During work, you should pay attention to whether the motor is running normally and whether there is noise or overheating.

12. During the mechanical cold drawing operation, always pay attention to the operation of the pay-off frame, pressure roller frame and roller. If any abnormality is found, stop the machine immediately for repairs.