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Self-adaptive lifting mechanism and car lifting jack

A lifting mechanism and self-adaptive technology, applied in the direction of lifting frame, lifting device, etc., can solve the problems of exacerbating the deflection of the axis of the nut axis, the axis of the screw, the low transmission efficiency, and the increased wear of the nut.

Pending Publication Date: 2022-02-01
BEIJING RAILWAY INST OF MECHANICAL & ELECTRICAL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The simple support method provides a limiting force for the lower end of the screw in the horizontal direction, causing the screw to produce more serious bending deformation, that is, a large radial displacement, which further aggravates the deviation of the axis of the nut relative to the axis of the screw. Inclined, resulting in increased wear of the nut, low transmission efficiency, prone to lifting and crawling, stuck and other phenomena, and poor performance of the crane

Method used

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  • Self-adaptive lifting mechanism and car lifting jack
  • Self-adaptive lifting mechanism and car lifting jack
  • Self-adaptive lifting mechanism and car lifting jack

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Embodiment Construction

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0034] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two ...

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Abstract

The invention belongs to the technical field of jacking equipment, and discloses a self-adaptive lifting mechanism and a car lifting jack, the self-adaptive lifting mechanism comprises a mounting frame body, a lead screw and a bearing assembly, the mounting frame body comprises a top plate and a base which are arranged in parallel and at an interval, the upper end of the lead screw is rotatably connected to the top plate, and the bearing assembly sleeves the lead screw and is in threaded connection with the lead screw; an elastic support is arranged on the base, a limiting hole is formed in the elastic support, the lower end of the lead screw is rotatably arranged in the limiting hole in a penetrating mode, and when the bearing assembly works in a unilateral unbalance loading mode, the bearing assembly bears vertically-downward pressure and clockwise bending moment load, the lead screw can move slightly in the axial direction of the limiting hole, and the lower end of the lead screw can generate micro displacement along the radial direction. Through the arrangement of the elastic support, when the bearing assembly is subjected to unilateral unbalance loading, the lead screw can adaptively generate axis deviation with the same trend as the bearing assembly, the deflection amount of the axis of the bearing assembly relative to the axis of the lead screw is reduced, and the transmission efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of jacking equipment, in particular to an adaptive lifting mechanism and a crane. Background technique [0002] Jacking equipment is widely used in the machinery industry, and its core is a driveable lifting mechanism. The lifting mechanism can hold up the mechanism to be lifted, so that a certain operating space is formed under the mechanism to be lifted, and at the same time, can support the mechanism to stably descend to its original position. [0003] Exemplarily, in the transportation industry, vehicles need to be regularly inspected. When the transportation vehicle enters the workshop for maintenance, it needs to lift the vehicle body by the crane, so that the rolling stock can be inspected and repaired. The lifting mechanism of the crane includes a vertically arranged lead screw and a nut sleeved on the lead screw, and a bracket is connected to the nut. When jacking up, support the bracket on the b...

Claims

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Application Information

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IPC IPC(8): B66F7/00B66F7/28
CPCB66F7/025B66F7/28
Inventor 黎莎闫颖辉
Owner BEIJING RAILWAY INST OF MECHANICAL & ELECTRICAL ENG
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