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Multi-stage overload protection type shear pin type mechanical overload protection structure

A shear pin type, overload protection technology, applied in mechanical equipment, couplings with safety disconnect joints, belts/chains/gears, etc., can solve the problem that the shear pin type overload protection structure cannot be used, etc. Simple, low production and maintenance costs, reliable results

Active Publication Date: 2015-11-11
山东省水电设备厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the shear pin type overload protection structure cannot be used under dynamic load conditions. In addition, the present invention can also realize the selection and determination of the shear pin shear diameter under unknown load conditions

Method used

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  • Multi-stage overload protection type shear pin type mechanical overload protection structure
  • Multi-stage overload protection type shear pin type mechanical overload protection structure
  • Multi-stage overload protection type shear pin type mechanical overload protection structure

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Embodiment Construction

[0025] The following will take the four-stage overload protection structure (drive shaft and driven shaft mode) in the multi-stage overload protection structure as an example to describe in detail with the accompanying drawings:

[0026] In the four-stage overload protection structure, the driving wheel 1 is provided with four shear pin installation holes, and the driven wheel 2 is provided with seven shear pin installation holes and three shear pin installation slide holes of different lengths. The shearing pins are provided with four specifications, namely the primary shearing pin 8 with a shearing diameter d1, the secondary shearing pin 9 with a shearing diameter d2, the tertiary shearing pin 10 with a shearing diameter d3, and the fourth-stage shearing pin 11 with a shearing diameter d4. The cutting diameter relationship is d1<d2<d3<d4, and they are respectively installed at four places a, b, c, and d, so that a total of four levels of overload protection such as primary pr...

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Abstract

The invention relates to a structural type, in particular to a multi-stage overload protection type shear pin type mechanical overload protection structure. The multi-stage overload protection type shear pin type mechanical overload protection structure can achieve protection in two stages, three stages, four stages and more than four stages. The multi-stage overload protection type shear pin type mechanical overload protection structure mainly comprises a driving wheel 1, a driven wheel 2, a displacement sensor, a control unit, shear pins in various stages and the like. The multi-stage overload protection type shear pin type mechanical overload protection structure is characterized in that the tooth form of the driving wheel is consistent with that of the driven wheel; the driving wheel is provided with a plurality of shaft pin installation holes; the driven wheel is provided with a plurality of shear pin installation holes and a plurality of shear pin installation sliding holes; when the overload phenomenon exits, the shear pins in various stages will be sheared in sequence, then displacement deviation is produced when the driving wheel continues to rotate and the driven wheel does not rotate, the displacement sensor is triggered, and finally the control unit can achieve the alarm, halt and other protection functions according to settings. The multi-stage overload protection type shear pin type mechanical overload protection structure is simple in structure, reliable to work, convenient to maintain and extremely low in cost, and thoroughly solves the technical problem that the multi-stage overload protection type shear pin type mechanical overload protection structure cannot be applicable to moving loads or unknown loads.

Description

technical field [0001] The invention relates to a mechanical overload protection structure, specifically a shear pin type mechanical overload protection structure for multi-stage overload protection (hereinafter referred to as a multi-stage overload protection structure), which is suitable for overload protection requirements under various dynamic load or static load conditions It is also applicable to the selection and determination of the optimal shear diameter of the shear pin under the condition of unknown load. Background technique [0002] As we all know, the overload of mechanical transmission may cause very serious consequences. Light ones may lead to component deformation, jamming and fracture, and severe ones may cause major accidents, or even machine crashes. Among the overload protection types of many mechanical transmissions, the shear pin type mechanical overload protection structure is widely used because of its simple and reliable structure, convenient mainte...

Claims

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Application Information

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IPC IPC(8): F16H35/10F16D9/06
CPCF16D9/06F16H35/10F16H2035/103F16H2035/106
Inventor 冯明月孙清海徐瑞琢
Owner 山东省水电设备厂
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