Improvement on prevention of misoperation of hook arm garbage truck
Hook-arm garbage trucks are very common sanitation garbage trucks. Because one truck can be equipped with multiple large garbage bins, the transportation efficiency is high, the operating cost is low, and the structure is simple and has been maintained. It is an indispensable good helper of sanitation department and sanitation practitioners. The hook-arm garbage truck produced by Chengli Special Automobile is the best choice for our customers, with good quality, guaranteed after-sales, and user-friendly operating system. Now let's talk about some improvements made by Chengli Garbage Truck manufacturers on the misoperation of hook-arm garbage trucks. This improvement effectively prevents the phenomenon that the garbage bin falls off the hook arm due to misoperation and failure to lock the hook when dumping garbage. The movement of the pull arm is mainly separated by the driver by operating the control handle to control the electric commutation of the hydraulic solenoid valve, but most garbage truck manufacturers currently use old-fashioned hydraulic controllers to reduce costs. Matching and misoperation of the lock box function during the unloading process will cause the garbage truck to fail to start due to the lack of battery power, and the garbage box body suddenly falls from the pull arm, which poses serious safety hazards. According to the above requirements, we believe that when designing the hydraulic control circuit, we must first consider the error-proof design, that is, during the garbage dumping process, the locking and unlocking buttons have no effect. Secondly, this error-proof design cannot affect other actions of the garbage truck. Only in this way can hidden dangers be eliminated. Therefore, unlocking and locking automation is the key. Xiaomi Geometry Lazy Fish Tank
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The hook-type garbage truck is composed of two parts: the chassis of the car and the upper part of the pull arm. The supporting garbage collection compartment can be separated from the vehicle. At present, there are mainly two types of control for the separation of the control arm, manual operation and automatic operation. Automatic operation has become the standard configuration of garbage trucks because of its convenient operation. 
In order to prevent this error, Chengli garbage truck manufacturers have improved the operating system. The main actions of the hook arm garbage truck in operation are to put the box, hook the box, lock and unlock. First, place the empty trash bin in a fixed place. After the trash bin is full, hook it up and place it on the frame, and fix it with a locking device to move it forwards and backwards. After being transported to the garbage station, the locking device keeps its state unchanged, connects the hook arm and the locking frame into one, and uses the box-laying function to unload the garbage.
During the dumping process of the garbage truck, the locking device must be kept locked to achieve this function. If there is a misoperation, the phenomenon of the garbage box falling from the hook arm will occur after the lock is unlocked, and there is a serious safety hazard.
By analyzing this problem, the reasons for this problem are as follows: (1) Design reasons. (2) Misoperation by the driver.
As the hook-arm garbage truck is in actual operation, the skill requirements of the driver of the vehicle are uncontrollable factors, and cause (2) is not analyzed and improved as a cause. The main reason for this problem is the unreasonable control circuit design. 
(1) Put the box: Place the empty box in a fixed area. In the hydraulic control circuit, only the box release and unlock solenoid valves are energized, which conforms to the operation steps of first unlocking and then placing the box.After the garbage box is separated from the frame, locking and unlocking have no effect, and other components mounted on the hook arm will not be wrong. The output of the cabinet is hindered.
(2) Hook box: After the garbage box is full of garbage, place it on the frame and lock the garbage box for transportation. In the hydraulic control circuit before the hook box, only the solenoid valves of the box and the hook box are energized.The box body is pulled up by the hook arm and placed on the frame.After the limit switch on the frame is touched, the solenoid valve is locked and unlocked. Lock the trash box for transportation.
(3) Garbage self-unloading: After transporting the garbage to the garbage station, the hook arm upper body is connected with the garbage bin body through a locking function, and the garbage unloading is realized through the bin putting function. The locking function before putting the box has integrated the garbage box body with the hook arm upper body.At this time, only the box putting, unlocking, and locking solenoid valve are energized.After the box is put, the frame limit switch is reset.At this time, only the box putting, The hook box solenoid valve is energized, and the unlocking and locking solenoid valve has no electricity. No matter whether the driver operates erroneously, it will not cause the garbage box to fall from the pull arm.
According to the improved requirements, we have also upgraded the driver's operating handle in the cab, and added the control line master switch button. Improved features: The hydraulic system control circuit adds double insurance, that is, vehicle key ignition insurance, control handle main switch insurance, thus eliminating the driver's misoperation.
The results of the improved hook-arm garbage truck prove that the new improved hydraulic control circuit eliminates the phenomenon of the garbage box falling off the hook arm due to the driver's misoperation, and eliminates the hidden safety hazards. The whole vehicle has good reliability, economy and safety, which guarantees the quality of the product.