CN204111157U - A kind of escalator or footway chain breakage protection device - Google Patents
A kind of escalator or footway chain breakage protection device Download PDFInfo
- Publication number
- CN204111157U CN204111157U CN201420538400.3U CN201420538400U CN204111157U CN 204111157 U CN204111157 U CN 204111157U CN 201420538400 U CN201420538400 U CN 201420538400U CN 204111157 U CN204111157 U CN 204111157U
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- China
- Prior art keywords
- rocking arm
- chain
- force side
- footway
- escalator
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Abstract
The utility model discloses a kind of escalator or footway chain breakage protection device, comprise the rotating rocking arm being installed on rotating shaft, one end of rocking arm is the force side other end is force side; Controlled the safety switch of break-make by rocking arm, its trigger unit is located in the path of motion of rocking arm force side; Accept the rotatable sprocket wheel of the chain on escalator or footway, be located at rocking arm force side; Rocking arm force side is applied to the retracing spring of power upwards, be located at rocking arm force side.The utility model structure is simple; because the starting force of retracing spring exists; chain must apply enough pressure to rocking arm just can make rocking arm rotate triggering secure switch; therefore chain rupture protection misoperation is not easily caused; and when after chain rupture failture evacuation; retracing spring enables rocking arm automatically reset; further; this chain rupture protection has the function preventing chain pine excessively, the sprocket wheel of setting can also effectively prevent driving chain from loosening to a certain degree but only pine time the frictionally damage of chain rupture protection to chain that cause.
Description
Technical field
The utility model relates to escalator or moving sidewalk field, especially for the chain breakage protection device on escalator or footway.
Background technology
The driving chain chain rupture design protection of current Ge great escalator producer is simple and crude, and simple and crude chain rupture protection was easily lost efficacy and misoperation, and did not possess the loose function of the anti-mistake of chain; Although some chain rupture protections possess locking functions, during work, guide plate and chain contact, produce larger noise.Such as a kind of chain breakage protection device disclosed in Chinese patent CN202864650U, although structure is simple, the rocking arm of safety switch is in immediately below chain meander sections, and installation site is not easy to repair and maintenance inspection, and does not possess the function preventing chain excessively loose.A kind of escalator chain breakage protection device disclosed in Chinese patent CN202967842U, playing rod after chain rupture failture evacuation cannot automatically reset, and need reset manually, if repair and maintenance personnel neglect omission, chain breakage protection device just can lose efficacy, and there is very big potential safety hazard.Device for protecting drive chain of escalator disclosed in Chinese patent CN201321336, although possess anti-driving chain to cross loose function, slide block is in the top of driving chain, and contacts with driving chain, can produce larger noise when staircase normally runs because of friction.
Utility model content
For solving the problem, the utility model patent provides a kind of escalator or footway chain breakage protection device, and its structure is simple, and rocking arm can automatically reset, and can prevent misoperation, noiselessness and do not cause damage to chain.
The purpose of this utility model is achieved in that a kind of escalator or footway chain breakage protection device, it is characterized in that comprising: the rotating rocking arm being installed on rotating shaft, and one end of rocking arm is force side, and the other end is force side; Controlled the safety switch of break-make by rocking arm, its trigger unit is located in the path of motion of rocking arm force side; Accept the rotatable sprocket wheel of the chain on escalator or footway, be located at rocking arm force side; Rocking arm force side is applied to the retracing spring of power upwards, be located at rocking arm force side.
Described rocking arm force side is fixed with dead axle, and sprocket wheel is rotating to be installed on dead axle.
Described rocking arm top position is provided with limited post.
Described retracing spring is extension spring or torsion spring.
Described retracing spring one end maintains static, and the other end is fixed on rocking arm force side or dead axle.
Dead axle is fixed in described retracing spring one end, and the other end is fixed on limited post.
Described rocking arm force side is provided with groove, and the trigger unit correspondence of safety switch is positioned at the position of groove.
The utility model structure is simple; because the starting force of retracing spring exists; chain must apply enough pressure to rocking arm just can make rocking arm rotate triggering secure switch; the situation of therefore general vibration or chain-loose to a certain extent but only pine can not cause chain rupture protection misoperation; and when after chain rupture failture evacuation; retracing spring enables rocking arm automatically reset; further, the frictionally damage of chain rupture protection to chain caused when the sprocket wheel of setting can also effectively prevent driving chain from loosening to a certain degree and only loose.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model.
Detailed description of the invention
As shown in Figure 1, the utility model is a kind of escalator or footway chain breakage protection device, comprises adapter plate 1, safety switch 2, limited post 3, rotating shaft 4, back-up ring 5, rocking arm 6, dead axle 7, sprocket wheel 8, retracing spring 9 etc.
Rotating shaft 4 is fixed on adapter plate 1.Rocking arm 6 is rotating to be installed in rotating shaft 4, carries out axial limiting by the back-up ring 5 be fixed in rotating shaft 4.One end of rocking arm 6 is force side, and the other end is force side.Safety switch 2 is fixed on adapter plate 1, and its trigger unit 21 is located in the path of motion of rocking arm 6 force side, rotates touch trigger portion 21 thus the break-make of control safety switch by rocking arm 6.In the present embodiment, rocking arm 6 force side is provided with groove, and trigger unit 21 correspondence of safety switch 2 is positioned at the position of groove, and when rocking arm 6 rotates, the cell wall of groove will touch the trigger unit 21 of safety switch 2.
Rocking arm 6 force side is located at by rotatable sprocket wheel 8, for accepting the chain of escalator or footway, when chain touches sprocket wheel 8, can apply a downward pressure to rocking arm 6 force side.In the present embodiment, be fixed with the dead axle 7 perpendicular to rocking arm in-plane in rocking arm 6 force side, sprocket wheel 8 is rotating to be installed on dead axle 7, and carries out axial limiting by the back-up ring 5 be fixed on dead axle 7.
Retracing spring 9 is located at rocking arm 6 force side, to rocking arm 6 force side applying power upwards.Retracing spring 9 should have certain starting force, thus only has the chain really broken could apply enough pressure to rocking arm 6 to make rocking arm 6 rotate triggering secure switch 2, and the situation of therefore general chain pine excessively can not cause chain rupture protection misoperation.Retracing spring 9 can be extension spring (providing pulling force upwards) or torsion spring (providing thrust upwards), as long as one end maintains static, the other end is connected with rocking arm 6 force side or dead axle 7.In the present embodiment, dead axle 7 one end centered by rocking arm 6 is provided with sprocket wheel 8, and the other end is connected with retracing spring 9.For preventing retracing spring 9 from making rocking arm 6 rotational angle that resets excessive and damage safety switch 2, preferably, as in the present embodiment, limited post 3 can be provided with in rocking arm 6 top position.Now retracing spring 9 can adopt two ends with the extension spring of hook, and dead axle 7 is fixed in one end, and the other end is fixed on limited post 3.
During use, by adapter plate 1 by the utility model integral installation on escalator or footway truss lower boom 10, sprocket wheel 8 correspondence is arranged in below chain.Certainly, if there is no adapter plate 1, also can rotating shaft 4, safety switch 2 etc. are directly installed on escalator or footway truss lower boom 10 respectively, but installation comparatively bother.
When staircase normally works, staircase driving chain bar is located at above sprocket wheel 8, and both keep certain distance and no touch.When staircase driving chain chain rupture or when crossing pine, chain drive-belt falls downwards and clashes into sprocket wheel 8, and because weight chain is far longer than the starting force of retracing spring 9, sprocket wheel 8 drives rocking arm 6 clickwise by dead axle 7, and after rocking arm 6 rotates, safety switch 2 is touched in its force side.After the failture evacuation of chain rupture, retracing spring 9 pulls dead axle 7 that rocking arm 6 left-hand revolution is upwards resetted.Because retracing spring 9 still has certain pulling force after rocking arm 6 resets, can prevent owing to vibrating excessive rocking arm 6 misoperation caused.When chain drive-belt loosen to certain acceptable degree and sagging encounter chain breakage protection device but weight cannot trigger again rocking arm 6 action time; sprocket wheel 8 can and chain drive-belt be in engagement and advance with chain drive-belt and rotate, can effectively prevent chain breakage protection device to the scratch of chain drive-belt.
Claims (7)
1. escalator or a footway chain breakage protection device, is characterized in that comprising: the rotating rocking arm being installed on rotating shaft, and one end of rocking arm is force side, and the other end is force side; Controlled the safety switch of break-make by rocking arm, its trigger unit is located in the path of motion of rocking arm force side; Accept the rotatable sprocket wheel of the chain on escalator or footway, be located at rocking arm force side; Rocking arm force side is applied to the retracing spring of power upwards, be located at rocking arm force side.
2. escalator according to claim 1 or footway chain breakage protection device, is characterized in that: described rocking arm force side is fixed with dead axle, and sprocket wheel is rotating to be installed on dead axle.
3. escalator according to claim 1 or footway chain breakage protection device, is characterized in that: described retracing spring is extension spring or torsion spring.
4. escalator according to claim 1 and 2 or footway chain breakage protection device, is characterized in that: described retracing spring one end maintains static, and the other end is fixed on rocking arm force side or dead axle.
5. escalator according to claim 1 and 2 or footway chain breakage protection device, is characterized in that: described rocking arm top position is provided with limited post.
6. escalator according to claim 5 or footway chain breakage protection device, is characterized in that: dead axle is fixed in described retracing spring one end, and the other end is fixed on limited post.
7. escalator according to claim 1 or footway chain breakage protection device, is characterized in that: described rocking arm force side is provided with groove, and the trigger unit correspondence of safety switch is positioned at the position of groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420538400.3U CN204111157U (en) | 2014-09-18 | 2014-09-18 | A kind of escalator or footway chain breakage protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420538400.3U CN204111157U (en) | 2014-09-18 | 2014-09-18 | A kind of escalator or footway chain breakage protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204111157U true CN204111157U (en) | 2015-01-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420538400.3U Active CN204111157U (en) | 2014-09-18 | 2014-09-18 | A kind of escalator or footway chain breakage protection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN204111157U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105731235A (en) * | 2016-04-18 | 2016-07-06 | 江南嘉捷电梯股份有限公司 | Chain breaking protection device on escalator or moving walk |
| CN109368470A (en) * | 2018-11-26 | 2019-02-22 | 苏州江南嘉捷电梯有限公司 | For detecting the detection device of drive chain chain rupture and the relaxation of escalator |
-
2014
- 2014-09-18 CN CN201420538400.3U patent/CN204111157U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105731235A (en) * | 2016-04-18 | 2016-07-06 | 江南嘉捷电梯股份有限公司 | Chain breaking protection device on escalator or moving walk |
| CN109368470A (en) * | 2018-11-26 | 2019-02-22 | 苏州江南嘉捷电梯有限公司 | For detecting the detection device of drive chain chain rupture and the relaxation of escalator |
| CN109368470B (en) * | 2018-11-26 | 2023-09-15 | 苏州江南嘉捷电梯有限公司 | Detection device for detecting chain breakage and looseness of driving chain of escalator |
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Legal Events
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |