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9 points garbage truck common fault repair methods, do you know a few?
Sanitation equipment information introduces you to 9 kinds of common faults and maintenance tactics of garbage trucks, so that you can easily repair your car without asking for help.
1. The garbage truck will shake and shake when the sanitation garbage truck is started in the morning.
This phenomenon occurs mostly in garbage trucks because individual cylinders do not work well and the valve closure is not strict. You can run for a while at high speed in 3 or 4 gears. If the garbage truck does not shake after the hot car but the shift is not smooth, it may be that the fuel injection nozzle of the sanitation garbage truck is not evenly sprayed. We only need to check and clean the fuel injector of the sanitation garbage truck.
2018-10-30
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Crane precautions in the operation
(1) General precautions for crane operations
1 Always carry out lifting work according to the lifting performance table.
2 Under the action of load, the working radius is increased due to the deflection of the main arm, and this factor should be taken into consideration during lifting operations.
3 Slowly operate the crane during the start of familiarity with the crane operation.
4 When lifting work, concentrate on it, don't look around, and pay attention to the surrounding situation to avoid accidents.
5 When the wind exceeds level 6, do not work.
6 In case of lightning, stop lifting and retract the boom.
7 Do not drag the load that has not been removed from the ground, and avoid side loading.
8 It is forbidden to work near high voltage lines.
(2) Operational precautions
1 The crane is to be supported on a firm and flat surface. (If the ground is soft, place a thicker wooden block on the underside of the footboard than the footboard area.)
2 When the crane is working, all the tires should be off the ground. In any case, you must first hit the leg when you are on the train.
3 The crane should be leveled before work, and it is not allowed to work without extending the horizontal legs and only extending the vertical legs.
4 Use the engine idle throttle to avoid shock when the leg is close to the end position.
5 When getting on the bus, it is forbidden to move the handle of the getting-off control valve. If you need to adjust the legs, you must put the heavy objects to the ground, turn the boom to the bracket in front of the crane, and then operate the legs.
6 When lifting the work, first lift the load off the ground and stop it. If there is no problem, continue lifting. Before lifting the load and leaving the ground, do not use the boom and boom to lift it off the ground, only the hooking operation.
7 Select the appropriate wire rope override based on the length of the boom.
8 When the wire rope is rolled and the hook is rotated, the wire rope must be completely unwrapped before lifting.
9 When the hook is lowered, more than 3 loops of wire rope must be retained on the reel.
10 Before the boom is extended (retracted), fully lower (lift) the hook.
11 When carrying out lifting work, it is forbidden to carry the telescopic boom.
12 Before performing the swing operation, observe that there are no people or obstacles around the turntable, and the swing arm is unobstructed. When hoisting the slewing, it must be run at a low speed.
13 When lifting work, avoid violent sudden stop, slow acceleration and deceleration, prohibit the joystick from changing rapidly, the joystick must first return to the neutral position, wait for the action to stop and then change direction.
14 When the main boom needs to level the main arm, it should be carried out behind the vehicle.
15 The winding of the wire rope on the reel cannot be overlapped or knotted and must be arranged neatly.
16 Lifting tools and ropes for lifting heavy objects shall be firm and reliable, and the lifting wire rope shall not exceed the prescribed scrapping standards, otherwise it shall be updated.
17 The surface of the hydraulic components should always be kept clean for inspection and fault detection. The hydraulic system should be disassembled as little as possible to avoid damage or falling into dirt. It must be dismantled for inspection and repair, and should be carried out in a clean place.
18 When the hook or arm is lifted, if the hook touches the height limit switch, the oil circuit will be automatically cut off, and the hook will stop rising immediately. At this time, the operator should operate in the downward direction of the hook.
19 When hydraulic components or piping must be disassembled for maintenance, the structure should be known and the components must not be damaged. When replacing the seal, the parts should be washed with kerosene or gasoline, and dried and coated with working oil (hydraulic oil). After the inspection and assembly, it should be adjusted by experiment and put into use.
20 After the first 100h of the slewing bearing work, check the coupling bolt once and apply a pre-tightening torque of 520 N.m.
21 Do not adjust the hoist mechanism brakes under load.
22 Always pay attention to the condition of the crane during operation. If an abnormality is found, the cause should be identified and eliminated in time.
23 When the actual load reaches 90% of the rated load, the force limiter will sound a buzzer and should be highly noticed.
24 It is strictly forbidden to carry out any modification of the crane without permission, otherwise the consequences will be at your own risk.
2018-10-30
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Daily maintenance and maintenance
1. In order to avoid operational errors, the sweeper control valve is mainly divided into main valve and auxiliary valve. Then the main ones of these two valves are different. The power of the main valve comes from the chassis of the road sweeper. The power of the auxiliary valve comes from the auxiliary engine of the special function part. The common engine of the road sweeper is Chaochai, Jiangling, Cummins. The main valve manages the tilting of the outer compartment behind the chassis and the hydraulic switch of the rear door of the compartment. The secondary valve manages the four ground brushes of the sweeper (which can control one or all of the work separately) and the suction cup.
2, the auxiliary engine of the sweeping car is different because of the different power of the engine brand, but the general speed is about 1500 rpm - 1800 rpm.
3, according to the needs of work, you can generally choose whether you need to bring water spray and dust reduction function. The conventional configuration usually sprays water after taking it. At the same time, you need to pay attention to whether the water volume of the clean water tank is enough. Generally, the volume of the clean water tank is different, and the working time may have a gap.
4, the road sweeper electromagnetic multi-way valve pressure regulation is generally on the overflow valve, the user can adjust the pressure to change the speed of the sweeping brush.
5. In addition, the sweeping car can select whether the brush on the left side of the vehicle and the brush on the right side work at the same time according to the road surface. For example, when sweeping the corner of the road, only the side of the corner is used to turn the brush to work.
6. The dustbin of the road sweeper may have fine dust deposits. Manual cleaning is required when cleaning the waste bin.
7. The distance from the suction cup of the road sweeper to the ground should be adjusted according to the condition of the road section.
8, sweeping car vacuum pipe may often have dirt and mud adhesion, need to be cleaned frequently to achieve better results.
9. When the electrical part of the control box needs to be replaced more stably, it is best to remove one piece.
10. Sanitation workers should regularly check whether the functional parts are normal.
11. In order to avoid the foreign matter in the hydraulic oil will affect the normal operation of the electromagnetic control valve, the sanitation workers should regularly check whether the hydraulic oil is normal.
12. Always check if the limit device of the clutch electric push rod of the vehicle's auxiliary engine is normal.
13. When the sweeping car control button is switched, the time interval should be 5 seconds.
14. When a hydraulic component of a road sweeper is not working properly, check the oil circuit and check the circuit according to the steps.
(1) The circuit part is abnormal. Possible reasons are: insurance disconnection, loose connection of line connection, line breakage
(2) The oil circuit is not normal. The possible causes are: oil pump failure, oil pipe rupture or oil leakage at the oil connection, and solenoid valve failure.
2018-10-30
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