Spiral jack

A technology of screw jacks and ejector rods, applied in the direction of lifting devices, etc., can solve problems such as jamming, and achieve the effects of prolonging service life, reducing redundant space, and solving jamming

Pending Publication Date: 2019-03-01
NANTONG TONGRUN AUTO ACCESSORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a screw jack, which is used to solve the problem of jamming easily occurring in the gear transmission process, reduce the noise generated by the gear transmission in a vibrating environment, and is easy to process

Method used

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Embodiment Construction

[0028] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

[0029] Aspects of the invention are described in this disclosure with reference to the accompanying drawings, which show a number of illustrated embodiments. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of numerous ways, since the concepts and embodiments disclosed herein are not limited to any implementation. In addition, some aspects of the present disclosure may be used alone or in any suitable combination with other aspects of the present disclosure.

[0030] Based on the existing technology, in the adaptation scheme of the slider chute of the internal lifting structure of t...

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PUM

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Abstract

The invention provides a spiral jack and relates to the technical field of hoisting equipment. The spiral jack comprises a handle, a base, a supporting pipe, a shell connecting the base and the supporting pipe, a thrust bearing, a first bevel gear connected with the thrust bearing in a matched manner, a guiding pipe arranged inside the supporting pipe, a jacking rod, a large screw rod, a small screw rod, a jacking head component, a second bevel gear and a gear shaft, wherein the joint of the shell and the gear shaft is provided with a gear shaft sleeve arranged on the outer side of the gear shaft in a sleeving manner, the outer wall of the gear shaft sleeve is relatively fixed with the shell, the end portion, close to the second bevel gear, of the gear shaft sleeve is provided with an elastic structure connected with the end face of the second bevel gear in an abutted manner, the periphery of the elastic structure is arranged at the end portion of the gear shaft sleeve, and the elasticstructure is in a compression state all the time. According to the spiral jack, the outer sides of the jacking rod and the guiding pipe are provided with a first sliding block and a second sliding block which are molded in an integrated manner correspondingly, the sliding blocks are arranged on the outer side, the processing efficiency is improved, by means of the gear shaft sleeve with elastic pieces, jamming appearing in the gear transmission process is effectively solved, and the service life of the jack is prolonged.

Description

technical field [0001] The invention relates to the technical field of lifting equipment, in particular to a screw jack. Background technique [0002] The screw jack is one of the types of manual lifting tools. It has a compact structure and a wide lifting range. The swing of the rocker is used reasonably to make the pinion rotate. After a pair of bevel gears are combined, the screw is driven to rotate, and the lifting sleeve is pushed to make the heavy Objects rise or fall, a wide range of applications. In the screw jack commonly used in the prior art, the internal screws are usually manufactured separately and then assembled. Therefore, the machining accuracy of each part is required to be high. In addition, when the gear transmission is used, the large and small gears are prone to jamming. Therefore technicians have carried out some series of improvements to each structure of screw jack. [0003] For example, the technical scheme of the screw jack disclosed in the paten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66F3/16
CPCB66F3/16
Inventor 章涛韩进林来顺
Owner NANTONG TONGRUN AUTO ACCESSORY
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