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Nut pre-tightening tool

A nut and pre-tightening technology, applied in the field of nut assembly, can solve problems such as low work efficiency, difficult post-process operations, and excessive nut pre-tightening torque, and achieve the effect of improving pre-tightening efficiency

Inactive Publication Date: 2020-10-30
DONGFENG LIUZHOU MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual use, due to the pre-tightening of multiple nuts at one time, there are cases where the rotation of the nuts is not synchronized, resulting in excessive pre-tightening torque of some nuts, resulting in difficulties in post-process operations, and low work efficiency.

Method used

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Examples

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Embodiment Construction

[0022] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] It should be understood that the terms "front", "rear" and the like are used in the present invention to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, "before" information could also be called "after" information, and "after" information could also be called "before" information without departing from the scope of the present invention.

[0024] Such as Figure 1 to Figure 4 As shown, the present invention provides a nut pre-tightening tool, which includes a transmission device 100 and an output device 200. The transmissi...

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Abstract

The invention relates to a nut pre-tightening tool. The nut pre-tightening tool comprises a transmission device and output devices, wherein the transmission device comprises a rack and a driving gear,the driving gear is arranged on the rack through a bearing and can rotate along the axis of the bearing, each output device comprises a tightening shaft arranged on the rack, as well as a driven gear, a friction plate, a compression spring and a limiting piece which are sequentially arranged on the tightening shaft in a penetrating mode, each tightening shaft can rotate with the tightening shaftas the axis, the end of each tightening shaft is connected with a sleeve, each driven gear is meshed with the driving gear and can rotate along the axis of the corresponding tightening shaft, and twoor more sets of output devices are available. According to the nut pre-tightening tool, a plurality of nuts can be tightened at a time, so that the pre-tightening efficiency is improved, meanwhile, the nut pre-tightening tool can accurately control the pre-tightening torque of each bolt, then the situation that the post-procedure operation is difficult due to the fact that the pre-tightening torque is too large is avoided, the operation is easy, and the use is convenient.

Description

technical field [0001] The invention relates to the technical field of nut assembly, in particular to a nut pre-tightening tool. Background technique [0002] In the automobile production line, the wheels and the axles are connected by multiple nuts, and the nuts need to be pre-tightened. The existing nut pre-tightening usually adopts the following method. First, the nuts are manually installed, and after the nuts are screwed into the 2-3 teeth of the bolts , using the nut pre-tightening tool to pre-tighten multiple nuts at the same time. In actual use, due to the pre-tightening of multiple nuts at one time, there is a situation that the rotation of the nuts is not synchronized, resulting in excessive pre-tightening torque of some nuts, resulting in difficulties in subsequent operations, and low work efficiency. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the object of the present invention is to provide a nut pre-tightenin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P19/06
CPCB23P19/06
Inventor 李昆霖周海斌廖勇区锦文黄佳华文建东
Owner DONGFENG LIUZHOU MOTOR
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