Are there any rules for the use of forklift trucks?

1. What is the forklift driver's "five forks"? \x0d\ Answer: (1) The center of gravity of the goods exceeds the load center of the fork, so that it will not fork when the longitudinal stability decreases. \x0d\(2) When the load is unbalanced, the single fork will not fork. \x0d\(3) Goods with unstable stacking will not fork. \x0d\(4) The fork tip may damage the goods. \ \x0d\ Answer: Forklifts are forbidden to lift and pull goods, and forklifts are forbidden to be overloaded. Forklift trucks are forbidden to carry people, and it is forbidden to connect two action circuits at the same time. The stacking height of each stack in the warehouse and car shall not exceed four floors. When forklifts fork fragile, valuable or unstable goods, they should be reinforced with safety ropes, and they can only run when necessary. \x0d\3。 Forklift can run. \x0d\ A: Turn, retreat, narrow passage, uneven road surface, traffic intersection, slow down when approaching goods. \x0d\4。 What are the requirements for forklift to make way? \x0d\ Answer: When the forklift is driving to the right, the fork should be 200 ~ 300mm off the ground. When forklift trucks avoid, let empty cars, downhill cars give way to uphill cars, branch lines give way to trunk lines, and big bends give way to small bends. When entering and leaving the car door and garage door, let the car leave the car door first. \x0d\5。 What items should be checked when diesel forklift is handed over? \x0d\ A: Check whether the fuel, engine oil and cooling water are sufficient, whether the fan belt is tight, whether the windshield is unobstructed or cold-proof in winter, and whether the tires are inflated firmly. Start the trial run and check the operation of steering and braking (including hand braking). \x0d\6。 What are the daily maintenance contents of forklift trucks? \x0d\ Answer: (1) Wipe the dust from all parts of the machine. (2) Check the oil quantity of the engine (internal combustion forklift). (3) Check the specific gravity and height of the battery electrolyte. The height of electrolyte should be higher than that of separator10 ~15 mm. Tighten the plug and check whether the electrode and wire connector are fastened. (4) Check whether the oil circuit leaks oil. (5) Whether all kinds of electrical circuit connectors are firm and whether all kinds of instruments are sensitive and effective. \x0d\7。 What are the labor safety rules that employees around the world abide by? \x0d\ Answer: 1.4. Do: have a full rest before work, concentrate on work, use protective equipment correctly and cross the line. \x0d\2，7。 Don't leave your post without permission, don't fly, don't take your feet with the car, don't drill over the vehicle, and don't grab the line. \x0d\ Answer: When there is no platform outside the boxcar, the opening of the door should not exceed the width of the forklift, otherwise it should be protected. The junction between the platform and the car should be provided with a crossing board, and its slope should not be greater than 20%. When the floor inside the car is rotten and damaged, steel plates should be laid. \x0d\9。 What safety regulations should forklift trucks abide by when handling dangerous goods? \x0d\ Answer: Ordinary forklifts are not allowed to operate inflammable and explosive articles in dangerous goods; Loading and unloading machinery for toxic and radioactive substances in dangerous goods should be used under the condition of load reduction of 25%. Handle with care when operating, and do not bump, bump, drag and other violent vibrations. \x0d\ 10。 What should drivers pay attention to when replacing batteries? \x0d\ Answer: (1) Pay attention to the polarity of terminals and poles when wiring; \x0d\(2) When wiring, be careful not to touch the body with the wrench; \x0d\(3) The terminal shall be clean and the connector shall be fastened. \x0d\ 1 1。 What are the technical requirements for "lifting" in forklift operating standards? \x0d\ Answer: To start a car, the following technical requirements should be met: (1) The mast leans backward. (2) fork up to the ground for 0.2~0.3m, and (3) keep watch. (4) Start in first gear and shift gears in one pole and one pole. (5) The speed has steadily increased. \ x0d \ x0d \ Answer: No parking is allowed on the ramp, and no parking is allowed on the side of the platform perpendicular to the line direction. If there is any fault, tighten the handbrake and cover the wheel with triangular wood before troubleshooting. \x0d\ 13。 What should I pay attention to when parking a forklift? \x0d\ Answer: After the operation is completed, the forklift should be parked in a place where traffic is not allowed, and parking in the open air should be avoided as far as possible. When the driver leaves the forklift, he should remove the key on the electric lock, cut off the power supply and set all operating handles to zero. When the fork descends to the lowest point, the gantry leans forward. When it is necessary to stop on the ramp, the forklift must be braked by the hand brake mechanism, and a stop wheel is added to prevent it from slipping. \ \x0d\ 14 \x0d\ A: The stacking of vehicle cargo and LTL cargo should be smooth and tidy. The whole vehicle cargo should be kept at a certain height, and the LTL cargo should be stacked in batches, with the labels facing outwards to ensure that it is neither heavy nor light, leaving a passage for easy counting. \x0d\ 15。 What is the stacking distance requirement of goods? \x0d\ Answer: The distance between the loading cargo pile and the outside of the rail head should be more than 2m, the distance between the unloading cargo pile and the outside of the rail head should be more than 1 .5m, and the distance between the cargo pile and the platform edge should not be less than1m.. There should be mechanical and pedestrian passages between the goods stacks, and the distance between the goods stacks and power switches, fire hydrants and other equipment should not be less than 2 meters. \ \x0d\ 16 \x0d\ Answer: (1) The pin rod of the steering gear is bent, and it is difficult for the worm to mesh with the roller. \x0d\(2) The knuckle pin bearing is short of oil. \x0d\(3) The steering gear worm bearing is short of oil. \x0d\(4) The knuckle pin bearing is damaged. \x0d\(5) Vertical and horizontal. \x0d\ Answer: When getting off the bus, the driver should remove the electric lock key, cut off the power supply, set all operating handles to zero, lower the fork to the lowest point, and tilt the gantry forward; Forklift trucks must be braked by hand. \x0d\ 18。 What is the method of installing protective signals? \x0d\ Answer: Before loading and unloading operations, the protection signal with derailer must be installed, and the operation team shall carry out protection according to the following provisions: \x0d\( 1) The protection signal should be set on the left rail of the vehicle at both ends in the head-on direction. If the vehicle is disassembled on the same line, it should be protected at the front of the line and the last vehicle. \x0d\(2) operation. \x0d\ Answer: (1) Establish a regular maintenance system to ensure good insulation and prohibit the use of electricity that does not meet safety regulations. \x0d\(2) The wire connector shall not be loose and exposed, and the twisted head shall not be used instead of the bolt. \x0d\(3) Switches and wires of electrical equipment shall be installed in accordance with regulations, and it is not allowed to replace large ones with small ones. \x0d\ A: When loading and unloading containers with forklifts, handle them with ease. During forklift operation, it is forbidden to pile up two containers for handling, and it is forbidden to mop the floor and push things. \x0d\2 1。 What are the requirements for container stacking? \x0d\ Answer; When stacking containers, it is forbidden to put them horizontally or upside down, and it is forbidden to collide with forklifts. When stacking containers, the container spacing should be placed in the position marked on the ground, and friction and collision are prohibited. The four corners of the upper and lower boxes of multi-layer stacked containers should be aligned to prevent collapse. \x0d\22。 What is the reason for the high oil pressure of internal combustion engine? \x0d\ A: The reasons for high oil pressure are (1) high oil viscosity; (2) Low engine temperature; (3) The main oil circuit of oil is blocked. In the above three cases, it is difficult for oil to lubricate the surface of parts, which aggravates the wear of parts. (4) The spring pressure of the pressure reducing valve is adjusted too much. \x0d\23。 What are the methods to adjust the idle speed? \x0d\ Answer: (1) Start the engine to reach the normal working temperature; \x0d\(2) Check whether the ignition system and valve train work normally; \x0d\(3) Open the throttle valve; \x0d\(4) Screw out the adjusting screw with a screwdriver to make the engine reach the lowest speed to avoid flameout; \x0d\(5) Turn the idle adjusting screw with a screwdriver to make the engine run at the highest speed under the above throttle opening; \x0d\(6) Then slowly unscrew the throttle adjusting screw to make the engine reach the lowest speed to avoid flameout; \x0d\(7) The two adjusting screws are matched with each other and adjusted repeatedly, so that the throttle opening is minimized and the engine runs at the lowest stable speed. \x0d\ After adjustment, appropriately increase the engine speed and suddenly close the throttle, so that the engine can run stably without stalling. \x0d\24。 What should I do if all kinds of machinery suddenly turn off or lose power? \x0d\ Answer: In case of sudden flameout or power failure of various machines, the controller should be immediately restored to the "0" position and the main switch should be turned off. \x0d\25。 What are the precautions for the safe operation of internal combustion engines? \x0d\ Answer: 1. Before starting, put all joysticks in neutral. After starting, check whether all instruments work normally and monitor whether the engine sound is abnormal. The first working time and restart interval of starting motor shall not exceed relevant regulations, and continuous starting shall not exceed three times. 2. Before running, the engine should run at idle speed for 10 minute, and be preheated when the outdoor temperature is lower than 0℃. No-load operation can be carried out only after the water temperature reaches the specified temperature, and it is forbidden to preheat with open flame when starting. 3. When the operation is stopped, the machinery should be parked in the designated position, neatly arranged, put into low gear, tighten the handbrake, remove the key and close the doors and windows. When parking outdoors in winter, water should be drained (except in areas where there is no frozen liquid and there is no ice in winter). 4. Turn off the engine when refueling. It is forbidden to "catch fire" between the spark plug of gasoline engine and the high voltage line when working. \ x0d \。 \x0d\ Answer: The mechanical running speed of the freight yard should be limited according to the site and mechanical performance. Generally, the freight yard does not exceed 15km/h, and the platform does not exceed10 km/h. When driving on a slope with a gradient exceeding 10%, no turning is allowed. When driving on a flat road, you should not reverse the car. Total cylinder volume, cylinder compression ratio? \x0d\ Answer: The volume between top dead center and bottom dead center is called cylinder working volume. The sum of the combustion chamber volume and the cylinder working volume is the total cylinder volume. The ratio of total cylinder volume to combustion chamber volume is called cylinder compression ratio. \x0d\28。 In which stroke cycles does the internal combustion engine work? Briefly describe the process of power stroke? \x0d\ Answer; (1) intake stroke (2) compression stroke (3) power stroke (4) exhaust stroke. When the piston moves to the top dead center and the compression stroke ends, the intake and exhaust valves are closed. The combustible mixture in the cylinder is ignited by the spark plug, and the burning gas expands violently, generating great pressure, forcing the piston to move from the top dead center to the bottom dead center. The connecting rod drives the crankshaft to rotate, converting the heat energy of gas into mechanical energy and outputting it to the outside world. \x0d\ A: Change the torque and speed of the engine, so that the forklift can obtain the required traction and speed to meet the requirements of starting, climbing and speed under various road conditions. \x0d\30。 What are the main factors that affect the service life of universal joints? \x0d\ A: The damage of universal joint is marked by the wear of cross journal and needle bearing. Lubrication and sealing directly affect the service life of the universal joint, and sometimes may cause the failure of other parts of the transmission device. Therefore, it is very important to maintain and fill the grease according to the specified time to ensure its good lubricity and cleanliness. \ x0d \ 36438+0。 When to use the hand brake? \x0d\ A: (1) When the operation is finished and the forklift is parked; (2) When the foot brake fails; (3) When the braking force of the forklift downhill foot is insufficient; (4) The forklift is in transportation. \x0d\32。 How often does the first-level maintenance take place? What are the maintenance contents and technical requirements of gantry? \x0d\ Answer: Primary maintenance once a month: Maintenance content: (1) Check and adjust the lifting chain. (2) Check the forks, fixtures and forks. (3) Check the internal and external portal frames and the main side rollers. \x0d\ Technical requirements: (1) There is no crack in the chain. The folding angle of the forks should not be greater than 90o, and the two forks should be on the same horizontal plane. (3) The gantry can move freely, and the rollers can rotate flexibly without jamming and looseness. \x0d\33。 What is the basic structure of internal combustion engine and the main components of four-stroke gasoline engine? \x0d\ Answer: (1) The basic structure of an internal combustion engine is: cylinder head, intake valve, spark plug, exhaust valve, piston, oil pan, cylinder block, connecting rod, crankshaft and flywheel. \x0d\(2) Four-stroke gasoline engine is mainly composed of crank-connecting rod mechanism, valve train, oil supply system, ignition system, lubrication system and cooling system. \x0d\ Answer: (1) Powertrain test. (2) The steering and braking running mechanism is sensitive and reliable. (3) The hydraulic mechanism is normal. (4) There is no abnormal sound and oil leakage (water leakage) in each part. \x0d\(5) Lighting and speakers are complete and effective. \ x0d \ 333\x0d\ Answer: (1) The common phenomena of mechanical failure are: loose connection, falling off, deformation of parts, poor wear, corrosion, fracture, heating, noise and obvious performance degradation. \x0d\(2) The main types are damage to shell and structural parts, damage to transmission parts and damage to connecting parts. \ x0d \ \x0d\ Answer: The function of the crankshaft is to (1) convert the thrust from the connecting rod into rotational force (torque) and transmit it to the transmission device through the crankshaft and flywheel; (2) Drive the camshaft, fan, cooling water pump, hydraulic oil pump and other devices to work. Take 475C gasoline engine as an example to illustrate the composition of crankshaft. \x0d\ Answer: (1) When the forklift truck travels in a straight line, the force transmitted by the left and right wheels to each side gear is equal. (2) The star guide gear cannot rotate around its own axis. It is inserted into two half-shaft gears like a straight rod, so that the two half-shaft gears rotate at the same speed under the drive of the differential housing of the cross shaft. \x0d\38。 What is the function of flywheel? \x0d\ Answer: (1) When the clutch is engaged with the flywheel, the power of the engine can be transmitted to the transmission device, and the gearbox receives the power first. \x0d\(2) The rotational inertia force of the flywheel is used to provide the force required for three non-power strokes of the piston, so as to ensure the smooth rotation of the crankshaft and store energy during the operation of the gasoline engine. \x0d\(3) The flywheel is equipped with. \x0d\ Answer: (1) Start from the first gear and accelerate gradually. (2) Slow down and slide first, and then brake and stop. (3) Don't meander when walking. (4) Don't drive in the opposite direction until the car stops. (5) Slow down before turning. (6) Slow down when crossing the road or on uneven roads. \ x0 \x0d\ Answer: "Three inspections" before operation: (1) Whether doors, shackles, pulleys, windows and floors are in good condition, whether the interior of the car is clean, whether there is any peculiar smell or abnormality, (2) cargo status, and (3) installation of machines, tools, protective equipment and protective signals. After the \x0d\ "three inspections \" operation: (1) vehicle cleaning, door and window closing and roadside cleaning; (2) Goods stacking, loading and reinforcement, and bitter cover; (3) The protection signal is released, the loading and unloading machines are complete, the vehicle is stopped, the engine is turned off, and the power supply is turned off; \x0d\4 1。 What are the technical requirements for forklift forks to pick up and put goods? \x0d\ Answer: (1) Tighten the pin, tilt the gantry backward, and lift the fork to the required height. (2) When picking up high-code goods, lift the pallet to a distance of 0. 1m from the goods on the lower pallet, whistle for returning the car, and the fork falls smoothly without touching other goods. (3) Easily collapsed goods and dangerous goods. \x0d\ answer: (1) counterpoint: slow down. For the goods to be forked, the gantry leans forward and puts down the fork. (2) Fork frame: enter the fork frame horizontally and smoothly, and the fork frame is close to the goods without colliding or scratching other goods. When forking goods, it is necessary to achieve "five forks". \ x0d \ \x0d\ Answer: (1) Align fork drop: stop and fork drop after reaching the specified cargo position. When the pallet slightly touches the ground, the gantry leans forward, and when the pallet is horizontal, the pallet (piece) falls. When the pallet is 0. 1m away from the lower cargo, it should enter and descend smoothly. (2) Pull the delivery fork. \x0d\ Answer: (1) Drain the hydraulic oil in the hydraulic oil tank, clean the filter, replace the broken screen, clean the magnetic plug, and add the hydraulic oil after filtration and precipitation. (2) Adjust the V-shaped sealing rings of the tilting cylinder, the lifting cylinder and the lateral displacement cylinder, and press the nuts to eliminate the oil leakage of the lifting cylinder, the tilting cylinder and the lateral displacement cylinder. (3) Replace the oil leakage on the pipeline. \x0d\ Answer: (1) Handbrake: lubricate the pin shaft of each lever of the handbrake. Check and adjust, so that the gap between the brake shoe and the brake drum reaches 0.4-0.6mm, and the contact surface reaches over 85%. \x0d\(2) Foot brake: lubricate each pin shaft, and adjust the pedal free stroke to 10-60. \x0d\ Answer: Because the required lubrication intensity of engine parts is related to their working conditions, different parts have different lubrication requirements, so the lubrication methods for different engines should be different. \x0d\ Lubrication of engine parts can be divided into excitation lubrication and splash lubrication according to oil supply methods. Forklift truck engines generally adopt a comprehensive lubrication mode with pressure as the main factor and splash as the auxiliary factor. \x0d\47。 Forklift starts. \x0d\ Answer: Since the working circuit of the non-working gear (first gear and second gear) is connected in series with the speed regulating resistor, the speed regulating resistor will consume some electric energy to achieve the purpose of deceleration. However, this speed regulation method has two major disadvantages: first, it consumes electric energy and is uneconomical; Second, if the resistor is used for a long time, it may cause a fire. Therefore, it is not advisable to use the non-working gear for a long time after the forklift is started. \x0d\48。 Accidents happen from time to time. \x0d\ Answer: In case of accident, measures should be taken immediately to rescue and prevent the loss from expanding. The accident situation should be collected quickly, and the scene of the accident should be maintained to prevent the loss from expanding. The accident should be reported to the superior immediately on the same day. Major accidents should be reported to the Ministry of Railways, and relevant leaders should immediately go to the scene of the accident to organize rescue, analysis and treatment. \x0d\49。 What is the reason why oil and cooling water are mixed together? \x0d\ Answer: There are two situations in which oil and cooling water are mixed: (1) Oil and water are mixed in the whole cooling system. (2) Water only exists in the oil pan. In the former case, the oil circuit is disconnected and connected with the waterway. The latter case is caused by the cooling blockage and air leakage of the spark plug on the cylinder pad. If the above situation is found, it should be repaired in time. \ x0d \ \。 \x0d\ Answer: (1) The oil pressure is too high. (2) Oil leaks from the oil pan formed by pipes and joints. (3) The engine runs at high speed for a long time, resulting in overheating and evaporation of the oil. (4) The oil leakage of the oil cylinder is caused by the abrasion of the piston, piston ring or oil cylinder arm. (5) There is too much oil in the oil pan, and the oil is thrown out of the crankcase ventilation pipe during operation. \x0d\ Answer: (1) The release bearing is short of oil and the seat sleeve is loose. (2) The separating rod is damaged. (3) The separation fork is loose. (4) The friction plate is broken or the rivet is loose and exposed. (5) The damping spring is broken. \x0d\52。 What is the working procedure of forklift unloading operation? \x0d\ Answer: (1) The forklift is driven to the job site. (2) The foreman listens to the report of "the first three inspections" and confirms that it meets the requirements for commencement. (3) The freight forwarder rechecks the car number and goods to confirm that it can start operation. (4) The foreman arranges the operation plan, divides the work safely, and announces the start of the operation. \ x0d \ \x0d\ Answer: (1) External inspection, always check whether the shell is damaged and whether the pole is corroded. (2) Check whether the electrolyte is turbid, indicating that there are impurities in the electrolyte, and the active substance on the electrode plate falls off seriously, which should be repaired. (3) Measure the discharge degree with a high-speed discharge instrument. (4) Conduct a discharge test to check the capacity reduction and follow the discharge method. \x0d\ Answer: (1) It is the same as the noise when the safety valve is opened due to overload. (2) Due to the lack of oil in the oil tank or the leakage of the joint between the oil pump and the oil pipe, the oil pump enters the air when pumping oil. (3) It is the same as that the oil is too dirty, the oil filter is blocked, or it is difficult for the oil pump to pump oil due to the high viscosity of the oil. \x0d\55。 What is the equipment? \x0d\ Answer: "Three Good" means good management, good use and good maintenance. "Four good" means good use, good maintenance, good inspection and good troubleshooting. \x0d\56。 What is the structure of the cooling water pump and how does it work? \x0d\ Answer: Generally, the cooling water pump of the engine adopts centrifugal pump, which is mainly composed of pump body, pump shaft, impeller, water seal, water inlet pipe and other parts. Working conditions: The pulley outside the pump body is driven by the crankshaft, and the impeller is driven to rotate in the pump body through the pump shaft, resulting in rotary centrifugal force, which forms a local vacuum at the water inlet, so that water enters the center of the impeller from the water inlet, and the impeller blades throw water at the inner wall of the pump body. A certain pressure is generated, and then it flows into the water jacket of the cylinder body through the water outlet of the water pump to realize the water circulation of the cooling system. \x0d\57。 What role does lubricating oil play in engine lubrication system? \x0d\ Answer: (1) Lubrication function: clean engine oil is continuously sent to the friction surface of engine running parts to form a good lubrication film (friction between liquids replaces rolling or sliding friction between solids) for lubrication, so as to reduce the movement and wear of parts. \x0d\(2) Cooling function: Due to the circulating flow of engine oil, part of the heat generated by friction can be taken away. (3) Cleaning function: Scraped metal chips can be taken away to keep the friction surface of machine parts clean and reduce friction. \x0d\(4) Sealing function: The oil layer between the piston and the cylinder wall can reduce the air leakage when the piston moves and improve the sealing performance between the piston and the cylinder wall. \x0d\58。 What is the function of oil pump? How does it work? \x0d\ Answer: The function of the oil pump is to send the oil to the friction part of the engine, so that the oil can circulate in the lubrication path, and the engine can be well lubricated. Oil pumps are mostly gear pumps, which are composed of gear pump bodies. When the engine is working, the camshaft drives the driving gear of the pump body to rotate. The gear throws oil from the oil inlet to the oil outlet along the inner wall of the pump body, forming low pressure and generating suction. The oil in the oil tank is sucked into the oil inlet. The oil at the oil outlet accumulates more and more, so the pressure increases, and the oil is pressed to all friction parts to realize forced lubrication. \x0d\59。 What is the function of the air filter and what components are it made of? \x0d\ Answer: The function of the air filter is to remove dust from the air entering the carburetor. Dust contains a lot of hard particles, which will cause accelerated wear of cylinder, piston, piston ring, valve bevel and other parts if it enters the cylinder. Therefore, the forklift engine should be equipped with an air filter to prolong the service life of the engine. \x0d\60。 What is the composition and function of forklift tilt cylinder? \x0d\ Answer: (1) In order to fork goods quickly and conveniently, it is necessary to lean the gantry forward; In order to prevent the goods from falling, it is necessary to tilt the gantry backwards to ensure the stability of the goods. The forward and backward tilting of the frame is completed by tilting cylinders. (2) The tilting cylinder consists of a piston, a cylinder body, a piston rod, an upper cover, a lower cover, a compression nut and a cover nut. (3) The tilting cylinder has two interchangeable oil holes as an oil inlet and an oil outlet, and the piston divides the cylinder into two cavities. When leaning forward, the posterior cavity. \x0d\ Answer: (1) Forklifts are strictly prohibited to stay at the crossing. (2) It is forbidden for the forklift to suddenly change direction during driving. (3) Forklift trucks are strictly prohibited from hard turning and dead turning. (4) Forklift trucks are strictly prohibited to carry a cargo at the same time. (5) Forklift trucks are forbidden to turn at high speed. (6) Emergency braking is prohibited unless there is an emergency. (7)6544 Forklift trucks are prohibited from using emergency braking. \x0d\ Answer: The hoisting mechanism consists of an outer gantry, an inner gantry, a hoisting cylinder, an inclined cylinder, an accessory frame, a chain, a sprocket and a guide chain (pulley). Lifting mechanism is one of the most important parts of forklift. It can complete loading and unloading operations such as forking, lifting, landing and stacking of goods. These processes are realized by hydraulic system. \ x0d \x0d\ Answer: The lower part of the outer gantry is hinged with the front of the frame to realize the front and rear inclination of the gantry. Its cross-sectional shape is trough-shaped, some are standard steel, and some are pressed by steel plates. The inner portal frame is inserted into the outer portal frame and can rise or fall along the inner wall of the outer portal frame. Its cross-sectional shape is trough-shaped, and it is also pressed by standard channel steel or steel plate, just like the outer gantry. \x0d\ Answer: The engine can't start, or sometimes it starts but stops quickly. The reason is: (1) the gasoline tank is short of oil or the oil pipe switch is not turned on. (2) The tubing is blocked, damaged or leaks oil at the joint. (3) The carburetor doesn't work well and the mixture is too thin. (4) The diaphragm of the gasoline pump is broken, the connecting rod falls off, and the oil supply is insufficient. \x0d\ Answer: (1) The heavy forklift stopped at the unloading place. (2) Lift the forklift to the height required for unloading. (3) The forklift slowly moves forward, so that the forklift is located above the pallet (goods) to be unloaded and braked. (4) The forklift truck descends to the running height and starts the next cycle. \ x0d \ \x0d\ Answer: The half shaft is the driving shaft of the driving wheel (front wheel), that is, the power transmission shaft. Forklift trucks sometimes need two driving wheels to rotate at different speeds. Therefore, the left and right driving wheels cannot be connected and driven by the same integral shaft, but two half shafts are driven by the differential. So the axle of the front axle is two half shafts. The inner end of the half shaft is provided with a keyway, which is engaged with the inner keyway of the half shaft gear and receives the power transmitted by the differential respectively. Outer end. It is bolted to the front wheel hub to drive the wheel to rotate. It can be seen from the use of the axle shaft that the axle shaft bears great torque, forcing the wheels to rotate and driving the forklift. \x0d\67。 What is the reason why the engine doesn't work? \x0d\ Answer: (1) The piston cylinder is excessively worn and the compression pressure in the cylinder is insufficient. (2) The ignition time is too late, so that the valve cannot be closed on time. (3) The valve clearance is too small and the valve is improperly closed. (4) The air filter is blocked and the air flow is too small. (5) The ignition system is faulty and the electric spark is too weak. (6) The carburetor is faulty. Failure of gasoline pump or oil circuit leads to poor oil supply. (7) The engine is overheated. (8) Air leakage in the intake manifold. (9) Excessive viscosity of oil or more impurities in oil will increase the motion resistance. \x0d\68。 What is the function of the hydraulic braking device of the internal combustion forklift and what parts are it composed of? \x0d\ A: Function of hydraulic braking device.