Maintenance method of gear pump of electric hydraulic pallet truck

Operators of electric hydraulic pallet trucks will think that the simplicity of pallet trucks is that they can solve simple pallet truck problems by themselves. This not only saves costs, but more importantly, reduces waste of time and avoids affecting the work process. Because we all understand one thing, that is, when we make an appointment for maintenance personnel, we may not be able to be in place in time, which will delay our work. The gear pump of the pallet truck is a part that is prone to problems. Let's take a look at the related problems.

1. The wear and gluing of the outer circle of the pallet truck gear will make the radial gap larger. If it is not serious, it is not necessary to repair it, but if the situation is serious, it is necessary to change the gear for the electric hydraulic pallet truck. .

2. If there is wear on both sides of the gear, if the starting line is not very serious, you can use grinding to grind off the burr marks, but if the wear is serious, it can be ground on a grinder, and the end face of one gear is worn , the other gear also needs to be ground at the same time, to ensure that the thickness difference between the two gears is within 0.005mm. When grinding the gears of the electric hydraulic pallet truck, attention should also be paid to the high precision of the end face and the hole, and the end face and the end face. Tip After grinding, use whetstone to remove sharp edge burrs, but chamfering is not suitable.

3. The oil pump gears of the electric hydraulic pallet truck work in one direction, and the tooth surfaces are worn on one side. Remove the burrs from the worn gears with whetstone and replace them. The gear meshing position restores the working performance of the oil pump. The inner hole is generally not worn very much. If the wear is serious, it can be ground or the hole diameter can be ground to the repair size, and needle rollers can be selected.

4. The wear of the gear pump body of the electric hydraulic pallet truck generally occurs in the oil suction chamber. Some oil pumps can be repaired by the transposition method. The pump body is 180° around its own axis, and the oil suction chamber becomes the oil pressure chamber. , to restore its working capacity. It is recommended to remember that the oil pump body that cannot be repaired by the transposition method is recommended to be repaired by the copper sleeve method.

5. When the end face of the gear bearing frame of the electric hydraulic pallet truck is worn or the wire is pulled, the four bearing frames shall be placed on the surface grinder, and the end face shall be ground at one time based on the non-gear contact surface. When the gears are ground due to end face wear, grind the rear end face of the pump body to an appropriate thickness.

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