Pallet truck and auxiliary wheel assembly

Abstract

The invention discloses an auxiliary wheel assembly. The auxiliary wheel assembly comprises an upper bracket, a lower bracket and a spring, wherein the lower bracket is rotationally connected with theupper bracket; the spring abuts against the lower bracket in a contacting manner and is used for providing an elastic force; the auxiliary wheel assembly further comprises an ejection rod part and ananti-loosening part, wherein the ejection rod part is connected with the upper bracket and abuts against the spring in a contacting manner to adjust the elastic force of the spring; and the anti-loosening part closely fits the end surface of the external side of the upper bracket to prevent the ejection rod part from being loosened. The invention further discloses a pallet truck including the auxiliary wheel assembly. The auxiliary wheel assembly can accurately adjust load borne on an auxiliary wheel according to a demand so that an influence caused by a manufacturing error in the productionand assembling process can be reduced; and moreover, resources can be saved, and the production cost can be reduced; and meanwhile, the elastically adjustable auxiliary wheel assembly can be applied to more models.

Description

technical field [0001] The invention relates to the technical field of forklift assembly, in particular to an auxiliary wheel assembly. The invention also relates to a pallet truck with the auxiliary wheel assembly. Background technique [0002] A pallet truck is a general term for a type of forklift, including pallet jacks and pallet stackers. [0003] Currently, if figure 1 and figure 2 As shown, the drive system of the pallet truck (including the driving wheel 01) is rigidly connected with the frame 02, while the auxiliary wheels 03 on both sides of the driving wheel 01 are elastically connected with the frame 02, that is, the auxiliary wheels 03 are elastic ( Usually through the spring 04), the height difference between the auxiliary wheel 03 and the driving wheel 01 is set in the design, so that when the vehicle is on a level road, the spring 04 of the auxiliary wheel 03 has a certain amount of pre-compression, and the elasticity of the spring 04 It acts on the aux...

AI Technical Summary

Problems solved by technology

However, the amount of force on the auxiliary wheel 03 is related to the compression of the spring 04, and the compression of the spring 04 is directly determined by the height difference between the driving wheel 01 and the auxiliary wheel 03, and this height difference depends on the height difference between the driving wheel 01 and the auxiliary wheel 03. The respective installation positions, the driving wheel 01 and the auxiliary wheel 03 are all installed on the frame. Due to manufacturing errors, the installation surface of the driving wheel 01 and the auxiliary wheel 03 is difficult to meet the precise requirements, which eventually leads to the gap between the driving wheel 01 and the auxiliary wheel 03. The load distribution is not ideal; in addition, the theoretically designed load distribution of the driving wheel 01 and the auxiliary wheel 03 cannot be applied to all working conditions, and the above-mentioned structure of the driving wheel 01 and the auxiliary wheel 03 cannot be completed once it is installed Adjustments to load distribution

[0004] Therefore, how to avoid the load distribution of the driving wheel and the auxiliary wheel from being unable to adjust as required is a technical problem to be solved by those skilled in the art

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