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Passive terminal locking device for railway vehicle door system

A technology for rail vehicles and locking devices, which is applied in door/window fittings, operating mechanisms of wing sashes, buildings, etc., can solve the problems of low reliability, difficult replacement of lead screws, and large installation space, and achieves safety and reliability. High performance, high safety and reliability, simple and compact structure

Active Publication Date: 2017-11-10
NINGBO CRRC TIMES TRANSDUCER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The overall structure of the existing terminal lock is complicated, the installation space is large, and the adjustment of the slideway is difficult. If the adjustment is not in place, it may cause the lock to fail
In addition, the pitch of the lead screw of LS lock is variable, and the lead screw has high manufacturing requirements and is difficult to process. The lead screw is not easy to replace after the lock section is worn out; Bounce, low reliability, poor security

Method used

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  • Passive terminal locking device for railway vehicle door system
  • Passive terminal locking device for railway vehicle door system
  • Passive terminal locking device for railway vehicle door system

Examples

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Embodiment Construction

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] Such as Figure 1~6 Shown is a preferred embodiment of the present invention.

[0028] A passive terminal locking device for a rail vehicle door system includes a screw rod 1 and a locking mechanism. The locking mechanism includes a drive nut assembly, a locking assembly, a fixing assembly and a travel switch 6 .

[0029] The transmission nut assembly includes a nut pair 31 and a nut bracket 32 ​​sleeved on the nut pair 31. The nut pair 31 is sleeved on the screw rod 1 and is driven with the screw rod 1. There is a lock between the nut pair 31 and the nut bracket 32. Close the torsion spring 33, and the nut support 32 can drive the seat so as to drive the door-carrying device to move to realize the opening and closing of the door leaf.

[0030] The locking assembly includes a locking nut 21 and a locking limit assembly 22. The locking...

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Abstract

The invention relates to a passive terminal locking device for a railway vehicle door system. The passive terminal locking device comprises a lead screw and a locking mechanism. The locking mechanism comprises a transmission nut assembly and a locking assembly, wherein the transmission nut assembly is arranged on the lead screw in a sleeving manner and achieves transmission with the lead screw; the locking assembly comprises a locking nut and a locking limitation assembly; the locking nut is arranged on the transmission nut assembly in a sleeving manner, the locking limiting assembly is fixed to the upper portion of the locking nut, the locking nut is driven by the transmission nut assembly to rotate in the circumferential direction of the lead screw, the locking nut is located when rotating to the position abutting against the locking limitation assembly, and therefore the transmission nut assembly is also locked; and when the locking nut rotates to disengage from the locking limitation assembly, unlocking of the locking nut is achieved. According to the passive terminal locking device, by arranging the locking nut and the locking limitation assembly, locking of a door leaf is achieved, the structure is simple, concise and compact, the number of components is small, machining is easy, the dead load is small, and too large installation space is not needed; and moreover actions are easy and reliable, the components cannot be damaged, and the safety and the reliability are high.

Description

technical field [0001] The invention relates to the technical field of urban rail transit, in particular to a passive terminal locking device for rail vehicle door systems. Background technique [0002] As transportation becomes more convenient, urban rail transit and public transport vehicles are widely used. Correspondingly, there are higher requirements for the functionality and reliability of their components, especially the locking system of the vehicle door, which is directly related to safety performance. . The screw transmission mechanism is widely used in the vehicle door locking system of urban rail vehicles and public transport vehicles. There are two types of locking devices currently used in rail vehicle doors: terminal locking device and full-range locking device. At present, the terminal locking device Mainly including nut lock and LS lock. [0003] The LS locking device is realized by changing the lead of the lead screw as shown in the patent CN100348832C. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E05F15/652E05F15/655
Inventor 刘跃驰王啸程云昭王宝星彭毅沈敏杰郑华
Owner NINGBO CRRC TIMES TRANSDUCER TECH CO LTD
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