Movable pre-stretching device for chain

A chain and pre-tensioning technology, used in metal chains, wire tensioning appliances, manufacturing tools, etc., can solve the problems of unstable pre-tension value and low processing efficiency, and achieve the effect of stable pre-tension value.

Inactive Publication Date: 2010-08-11
NANJING LIMIN MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention changes the pre-tension value by changing the position of the booster sprocket, and the pre-t

Method used

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  • Movable pre-stretching device for chain
  • Movable pre-stretching device for chain
  • Movable pre-stretching device for chain

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] See figure 1 The shown chain dynamic pre-tensioning device includes a chain feed sprocket 1, a weighing sprocket 2, a first driven sprocket 3, a booster sprocket 4, and a second driven chain for bypassing the chain 22 in turn. Wheel 5, transition sprocket 6, chain-out sprocket 7.

[0013] The booster sprocket shaft 8 is arranged on the slide block 9 that can slide radially of the booster sprocket relative to the booster sprocket seat, and the end of the screw rod 11 that is threadedly connected with the booster sprocket seat 10 is hinged on the slide block , the other end of screw rod 11 is fixed runner 12. By turning the screw rod, the slide block moves along the radial direction of the booster sprocket together with the booster sprocket shaft and the booster sprocket on it, thereby changing the value of the pre-tensioning force.

[0014] The weighing sprocket shaft 14 of the suit weighing sprocket 2 is slidably arranged on the weighing sprocket seat 13, and the weig...

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PUM

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Abstract

The invention provides a movable pre-stretching device for a chain, which has the characteristics of stable pre-stretching value, large extension amount after stretching and high machining efficiency. The device comprises a chain feeding chain wheel, a stressing chain wheel and a chain discharging chain wheel on which the chain is wound in turn, wherein a stressing chain wheel shaft sleeved with the stressing chain wheel can be arranged on a stressing chain wheel seat in a way of moving along a radial direction. By changing position the stressing chain wheel, the pre-stretching value is changed and the pre-stretching value is stable, so the problems of unstable pre-stretching value and low machining efficiency caused by manual operation are solved.

Description

technical field [0001] The invention is a loading dynamic pre-tensioning device which is applied to eliminate gaps generated in the production process after chain products are assembled, and has the characteristics of simplicity, reliability, stable force value, and easy operation. Background technique [0002] The original chain assembly production needs to be lowered by the assembler after assembly, and then manually static pre-stretched, the pre-stretching method is simple and backward, the pre-stretching force value is unstable, and human factors are greatly affected. The elongation after stretching is about 0.30mm. The efficiency is low, and the labor intensity of the workers is high; each person pulls about 1800 pieces per shift. Also because the pre-tension value is unstable and the elongation after pulling is small, after the chain is sold, the elongation is large again during use and repairs occur. Contents of the invention [0003] The purpose of the present inv...

Claims

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Application Information

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IPC IPC(8): B25B25/00B21L19/00
Inventor 侯建国陈昌立李加坤
Owner NANJING LIMIN MACHINERY
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