Transmission system of alternating-current storage-battery electric forklift truck

Abstract

The invention relates to a transmission system of an alternating-current storage-battery electric forklift truck. The transmission system comprises a differential mechanism assembly, a speed reducer, a driving axle housing, a left brake, a right brake, a brake drum, a wheel hub, a left half axle and a right half axle. The speed reducer comprises a dual gear, a small dual gear and a pinion. The driving axle housing comprises a left axle housing, a speed-reducer main shell and a right axle housing. The left axle housing comprises a speed-reduction box and a left tubular axle which is connected with the speed-reduction box in sequence, wherein the speed-reduction box is in a clamshell shape, and a left sleeve is located on one side of the upper portion of the speed-reduction box. The speed-reducer main shell comprises a horizontal type barrel-shaped shell, wherein the upper portion of the barrel-shaped shell is a differential mechanism cavity, the lower portion of the barrel-shaped shell is a wheel axle cavity protruded downwards, and the differential mechanism assembly is located in the differential mechanism cavity. The right axle housing comprises a right axle housing body and a right tubular axle, wherein one end of the right axle housing body is in an end cap shape, and a right sleeve is located at the other end of the right axle housing body. The transmission system is compact in structure, good in manufacturability, low in manufacturing cost, good in assembly technology, and convenient to maintain.

Description

technical field [0001] The invention belongs to the technical field of transmission systems of transport vehicles, and in particular relates to the transmission system of AC storage battery electric forklifts. Background technique [0002] Depend on Figure 6 It can be seen that the transmission system of domestic 2-2.5t AC battery electric forklifts mostly adopts a structure in which the drive axle and the gearbox are relatively independent, that is, after the gearbox and the drive axle are assembled separately, they are connected together with bolts through a joint surface. The axle housing structure is an integral cast axle housing or a welded axle housing (stamping parts welding, cast steel welding form), etc. The main problems of the above axle housing structure are as follows: 1. The integral casting axle housing is heavy and heavy; Due to the strength requirements of key load-bearing parts, the utilization rate of materials is not high. In addition, the requirements f...

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Problems solved by technology

The axle housing structure is an integral cast axle housing or a welded axle housing (stamping parts welding, cast steel welding form), etc. The main problems of the above axle housing structure are as follows: 1. The integral casting axle housing is heavy and heavy; Due to the strength requirements of key load-bearing parts, the utilization rate of materials is not high. In addition, the requirements for processing and operation space are also large, and the processing is difficult.

2. Although the welded axle housing is more beautiful, you can choose higher quality materials to improve the performance of the key parts, but it requires a lot of molds, the manufacturing cost is high, and the environmental protection is poor, and the working environment of the workers is also relatively bad; 3. Bridge The versatility and interchangeability of the shell are not good; 4. When the vehicle frame and the drive axle are in a flexible connection structure, it is necessary to install two outstretched connecting plates 5 on both sides of the bridge body, and the frame is connected to the connecting plate through bolts. 5 fixed connection to realize the connection between the frame and the bridge; but for electric pallet trucks when the motors are arranged in parallel, due to the limitation of the opening size of the frame and the bending degree of the connecting plate 5, the detachable operation space of the motor is very small, and the maintenance process bad sex

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