Limit device for support foot disc of support leg

Abstract

The invention relates to a limit device for a support foot disc of a support leg, wherein the support leg comprises a support leg oil cylinder barrel internally provided with an oil cylinder rod and a support foot disc. The limit device is arranged between the support leg oil cylinder barrel and the support foot disc, and comprises a cover plate arranged on the support leg oil cylinder barrel, a limit plate connected with at least some parts of the cover plate and fixed on the support foot disc, and a limit pin component which leastways penetrates through the cover plate and the limit plate, wherein the cover plate and the limit plate are tightly fit with each other to limit the swinging of the support foot disc, and the limit pin component leastways penetrates through the cover plate and the limit plate to limit the rotation of the support foot disc. According to the limit device, the support disc is made into rectangle, so that the grounding area when the support leg works can be guaranteed; and the limit device can work without manually operating the support foot disc, so that the work efficiency can be improved, and the valuable time can be saved.

Description

technical field [0001] The invention relates to a mechanical limit structure, in particular to a limit device for a support leg and foot plate. Background technique [0002] The support plate of the existing elevated platform fire truck generally adopts a circular structure. With the development of large-scale vehicles, the pressure on the ground during operation is also increasing. In order to ensure a certain grounding specific pressure, the traditional foot plate has to increase the grounding area of ​​the foot plate, but this measure makes the foot plate in the The lateral dimension in the retracted state becomes larger, even exceeding the maximum lateral dimension of the vehicle specified by the standard. [0003] see figure 1 and figure 2 , In order to solve the problem that the lateral dimension of the vehicle is too wide when driving, the foot plate is generally made into a push-pull sliding structure. Pull out the foot tray when working, e.g. figure 2 As show...

AI Technical Summary

Problems solved by technology

[0006] However, after changing the foot plate to a square shape, due to the rotation of the cylinder rod and cylinder barrel of the hydraulic cylinder, the foot plate is fixed on the cylinder rod, so the direction of the foot plate cannot be limited.

When the foot plate rotates through a certain angle, there is a problem that the vehicle’s lateral dimensions are too wide when driving

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