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Pulley capable of preventing flexible shaft from being derailed

A flexible shaft and pulley technology, used in door/window fittings, wing leaf parts, wing leaf suspension devices, etc. Transmission efficiency, the effect of eliminating transmission attenuation

Pending Publication Date: 2018-05-15
甘肃长城氢能源工程研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide an anti-derailment pulley for the flexible shaft to solve the problem that the flexible shaft is easily stuck, entangled and dropped during the working process of the valve opening mechanism

Method used

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  • Pulley capable of preventing flexible shaft from being derailed
  • Pulley capable of preventing flexible shaft from being derailed
  • Pulley capable of preventing flexible shaft from being derailed

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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0022] Such as Figure 3 to Figure 7 An anti-derailment pulley of a flexible shaft shown is installed on the flexible shaft of the switch cabinet valve opening mechanism, and it includes a stepped shaft 1, which is equipped with a first protective plate 2, a ball bearing 3 and a second protective plate 4 , the middle part of the cylindrical shaft body of the stepped shaft 1 is provided with a raised step 5, the two ends of the step 5 are processed into a quadrangular column shape, and the bottom end of the stepped shaft 1 is provided with a groove 6 along the radial direction; the first protective plate 2 It is a circular plate with the same outer diameter as the second protective plate 4. The center of the first protective plate 2 is provided with a first stepped hole 7. The upper part of the first stepped hole 7 is a square hole. The prism at the end of th...

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Abstract

The invention discloses a pulley capable of preventing a flexible shaft from being derailed. The pulley is arranged on the flexible shaft of a switch cabinet valve opening mechanism. The pulley comprises a step shaft; a first protection plate, a ball bearing and a second protection plate are arranged on the step shaft; a square hole in the top of the first protection plate is blocked by a prism atthe end of a step on the step shaft so that the first protection plate cannot rotate; and the second protection plate connected with the first protection plate also cannot rotate either, and simply the ball bearing clamped between the two protection plates can make rotary motion on the step shaft, so that the situation that the ball bearing is the only moving component is guaranteed. When the pulley is in use, the flexible shaft, according to the requirement of a transmission path, penetrates into gaps of a screw and the ball bearing, so that the flexible shaft can surround the external wallof the ball bearing in a half manner. The flexible shaft makes linear motion, and the friction between the flexible shaft and the ball bearing allows the ball bearing to roll. The screw prevents the flexible shaft from falling off the pulley, the problems of flexible shaft clamping stagnation and winding are solved, and the situation that a switch cabinet valve can be opened normally is ensured.

Description

technical field [0001] The invention relates to the technical field of medium-voltage electrical test equipment, in particular to an anti-derailment pulley for a flexible shaft, which is installed on a flexible shaft of a valve opening mechanism of a switch cabinet. Background technique [0002] The handcart of the armored removable metal AC enclosed switchgear and the switchgear cabinet are coordinated with the circuit breaker handcart is one of the most important links. When the circuit breaker handcart enters the switchgear, the flexible shaft on the valve opening mechanism (a special construction of the wire rope) reversed by brackets or rollers (see figure 1 , figure 2 ) The transmission force pulls the valve assembly, moves along the chute on the valve chute plate to open the valve, the handcart of the circuit breaker is in place, the dynamic and static contacts are engaged, and the steps of handcart cabinet assembly are completed. At present, this valve opening met...

Claims

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Application Information

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IPC IPC(8): E05D13/00
CPCE05D13/00E05D13/003E05Y2999/00
Inventor 王嘉明于庆瑞王雷龚兴吕航明
Owner 甘肃长城氢能源工程研究院有限公司
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