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A pulley with a tension holding device

A technology of tension maintenance and pulleys, which is applied to transmission devices, belts/chains/gears, mechanical equipment, etc., can solve problems such as belt looseness, achieve the effect of avoiding rotation clearance and ensuring transmission accuracy

Active Publication Date: 2019-02-01
DONGFANG JINGYUAN ELECTRON LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The technical problem to be solved by the present invention is to overcome the shortcoming of the belt loosening when the existing belt transmission mechanism is used for a long time

Method used

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  • A pulley with a tension holding device
  • A pulley with a tension holding device
  • A pulley with a tension holding device

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specific Embodiment approach

[0038] A pulley with a tension maintaining device, comprising a pulley 1 and a pushing block 22, characterized in that at least one radial slot 20 is arranged on the peripheral surface of the pulley, and the pushing block 22 cooperates with the inner wall of the slot and It is slidably arranged in the slot 20, and an elastic mechanism is provided between the push block 22 and the bottom of the slot 20. In order to ensure that the push block 22 can be completely set in the slot 20, it is also necessary to set the elastic mechanism The sum of the length when fully compressed and the thickness of the ejector block is less than or equal to the depth of the slot, so that the ejector block 22 can be completely placed in the slot 20, because if the ejector block 22 is higher than the slot 20 It will affect the normal winding of the transmission belt.

[0039] Specifically, the elastic mechanism may be a rubber pad or a spring, and the spring 21 is preferred in this embodiment.

[00...

no. 1 example

[0042] When a limit mechanism is provided in the slot 20, it includes a limit mechanism that is fixedly connected with the wall of the slot 20 and limits the position of the ejector block. The pushing block 22 can be effectively prevented from falling off, and the length of the spring 21 when fully stretched can be greater than the depth of the slot, so a greater thrust can be provided within the sliding range of the pushing block 22 . Because the plan of setting the limit device in the slot can provide greater thrust in the limit range, the push block 22 will not fall off, the spring 21 does not need to be fixedly connected, and the reliability is better. Therefore, the arrangement of the present invention is the preferred first embodiment of the present invention, and the first embodiment will be further described below.

[0043] Further, for the limit mechanism, various forms can be adopted, but no matter what form is adopted, it should be ensured that the limit mechanism i...

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Abstract

The invention discloses a pulley with tension keeping devices. The pulley comprises a pulley body and a pushing block, and is characterized in that at least one radial groove is formed in the peripheral surface of the pulley body, the pushing block is matched with the inner walls of the grooves and is slidably arranged in the grooves, an elastic mechanism is arranged between the pushing block and the bottoms of the grooves, and the sum of the length of the elastic mechanism and the thickness of the pushing block is smaller than or equal to the depths of the grooves when the elastic mechanism is completely compressed. By the aid of the pulley, problems of influence on the transmission precision of transmission mechanisms and various harmful effects such as rotary clearance due to fatigue and loosening of transmission belts in the belt transmission mechanisms during long-term usage can be solved. The pulley with the tension keeping devices has the advantages that transmission belts can be tightened by the aid of the pushing block when loosened, and can assuredly still keep in tightened states when loosened to a certain extent, accordingly, transmission slipping can be assuredly prevented, the transmission precision can be guaranteed, and rotary clearance can be prevented.

Description

technical field [0001] The invention relates to a pulley in a belt transmission mechanism, in particular to a pulley with a tension maintaining device. Background technique [0002] The existing belt transmission mechanism is composed of a transmission belt and a pulley, but with the prolongation of the use time, the transmission belt tends to be fatigued and aged, and then becomes loose and the tension becomes smaller, unable to maintain a taut state. This will have a great impact in some fields that require high transmission accuracy. For example, in the belt transmission mechanism of optical mechanical inspection equipment, in the design process of optical mechanical inspection system, it is often necessary to provide precise rotation for optical devices; commonly used optical devices include optical polarizers, optical lens group mounting wheels, optical filter components , and optical compensators, etc. In order to obtain ideal optical detection resolution, it is very...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H7/08
CPCF16H7/08
Inventor 穆玉海俞宗强
Owner DONGFANG JINGYUAN ELECTRON LTD