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Overload failure spanner handle

A wrench and handle technology, which is applied in the field of overload failure wrench handles, can solve problems such as unloading in time and easily damaged connectors.

Inactive Publication Date: 2017-05-31
PEOPLES LIBERATION ARMY ORDNANCE ENG COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems that the existing wrench or torque wrench cannot be unloaded in time when the pre-tightening force value is applied to a suitable value, and the connecting parts are easily damaged, the present invention adopts a steel ball positioning mechanism, an electromagnet provides power, and utilizes the characteristics of the low friction factor of the steel ball to realize Low voltage drives the movement of heavy load parts

Method used

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  • Overload failure spanner handle
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  • Overload failure spanner handle

Examples

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Embodiment Construction

[0013] See figure 1 , The overload failure type wrench handle is composed of a connector 101, a pin shaft 102, a latch 103, a steel ball 104, a fixed sleeve 105, a return spring 107, an electromagnet 106 and a handle housing 108 and the like.

[0014] See figure 1 , figure 2 , image 3 , the connecting head 101 is installed on the handle housing 108 through the pin shaft 102, and is used for connecting the head of the wrench. There is a groove at the end of the clamp 103. When the fixed sleeve 105 is lifted by the return spring, the steel ball 104 is fixed in the groove of the clamp 103 by the fixed sleeve 105 to limit the axial movement of the clamp 103; After the 103 is limited, the upper end surface is in close contact with the lower end surface of the connector 101. At this time, the connector 101 is fixed, and the handle can apply torque. When the torque value applied by the wrench reaches the required value, the control system will power on the electromagnet 106, an...

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Abstract

The invention discloses an overload failure spanner handle. The overload failure spanner handle is used for connecting with a spanner clamping head, and has a handle with an overload failure function. An actuation element of the handle failure is an electromagnet; as the handle is smaller, the provided power supply voltage is limited; and when a spanner tightens a bolt, the stressed load is higher, so that the handle adopts a steel ball to position to realize an action of low voltage driving a high-load part by using the characteristic of low friction factor of the steel ball. The overload failure spanner handle has the following advantages: the action of low voltage driving the high-load part is realized by using the characteristic of low friction factor of the steel ball; when the pretightening force applied to tighten the bolt by the spanner reaches a needed value, a control system sends an electric signal to the electromagnet; the electromagnet powerfully sucks a fixed sleeve to unlock the steel ball; and a connecting piece of the handle and the spanner clamping head can generate tiny rotation for timely unloading to protect a thread connecting piece from being damaged due to excessive load. The overload failure spanner handle is high in safety coefficient, is stable and reliable in mechanism motion, and can effectively protect safety of the connecting piece.

Description

technical field [0001] The invention relates to an overload failure type wrench handle, which is especially suitable for the wrench with failure function and the occasions requiring high torque accuracy for the wrench. The loading can be deactivated by a small rotation under the control of the control system when the applied torque reaches the desired value. Background technique [0002] Threaded connection is one of the most widely used connection methods, and has a large number of applications in civilian equipment and military equipment. All threaded connections need to be pre-tightened. Improper application of pre-tightened force may lead to equipment failure and serious accidents. At present, there are mainly two methods of applying proper preload: relying on experience and using a torque wrench. The method of relying on experience is widely used in occasions where the preload is not required to be high. This method has large errors and has certain potential safety ha...

Claims

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Application Information

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IPC IPC(8): B25B23/142
CPCB25B23/142
Inventor 王克印黄海英赵排航
Owner PEOPLES LIBERATION ARMY ORDNANCE ENG COLLEGE
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