CN214087270U - Protective switch capable of preventing step chain from breaking - Google Patents

Abstract

The utility model relates to an automatic staircase control technology field, in particular to can prevent cracked protection switch of step chain, including the staircase host computer, host computer gear and a plurality of drive gear, the output shaft at the staircase host computer is overlapped admittedly to the host computer gear, host computer gear passes through drive chain drive with the drive gear that is closest to and connects, a plurality of drive gear pass through drive chain drive and connect, be equipped with chain round pin induction system and chain arresting gear between each drive gear, chain arresting gear and chain round pin induction system set up along the traffic direction of drive chain, chain round pin induction system, chain arresting gear and staircase host computer all are connected with the controller electricity. Compared with the prior art, the utility model discloses simple structure, the controllability is strong, and the staircase moves the in-process for a long time, detects the drive chain round pin when photoelectric sensor and breaks away from, can make automatic escalator stall to chain arresting gear presss from both sides the drive chain tight simultaneously, prevents to take personnel to fall into the inside casualties that causes of staircase because of the broken chain, has improved the security performance.

Description

Protective switch capable of preventing step chain from breaking

Technical Field

The utility model relates to an automatic staircase control technology field, in particular to can prevent cracked protection switch of step chain.

Background

The escalator is a common personnel transportation tool in daily life, and is used in various fields of department stores, supermarkets, office buildings, hotels, airports, subways and urban traffic. Among the prior art, the staircase includes: the escalator comprises steps, step wheels, chain wheels, chains, steel rails, upper guide rails, lower guide rails, additional brakes, operation driving devices and trusses, wherein the trusses are installed in installation grooves where the escalators are installed, the steel rails, the upper guide rails and the lower guide rails are installed on the trusses and are parallel to each other, the steel rails are used for supporting the chain wheels, all the chain wheels are installed on the chains, the triangular steps are installed below each step, the chain wheels and the step wheels are installed on the steps, guiding of the step wheels is used for guiding rotation of the steps, so that all the steps can form a step shape or a plate, the chains are in a ring shape, the operation driving devices are installed at two ends of the chains and are used for driving the chains to move back and forth, safety accidents can occur after the chains break, and certain safety devices are needed for stopping the operation of the escalator in time, the existing safety device has the disadvantages of complex structure, low running stability, failure possibility due to frequent non-use, low controllability, short service life and increased use risk of the escalator.

SUMMERY OF THE UTILITY MODEL

To the not enough with above-mentioned background art, the utility model provides a can prevent cracked protection switch of step chain.

The utility model adopts the technical scheme as follows: a protection switch capable of preventing step chain from breaking is characterized in that: the escalator control device comprises an escalator host, a host gear and a plurality of driving gears, wherein the host gear is fixedly sleeved on an output shaft of the escalator host, the host gear is closest to the driving gears and is connected with the driving gears through driving chain transmission, the driving gears are connected with the driving gears through driving chain transmission, a chain pin sensing device and a chain braking device are arranged between the driving gears, the chain braking device and the chain pin sensing device are arranged along the running direction of a driving chain, and the chain pin sensing device, the chain braking device and the escalator host are electrically connected with a controller.

Preferably, a chain pin sensing device is arranged between the main machine gear and the closest driving gear.

Preferably, the chain braking device comprises fixing seats which are fixedly arranged on the escalator frame, the fixing seats are vertically arranged, the fixing seats are provided with grooves, the driving chain circularly passes through the grooves, a telescopic motor is arranged in the fixing seats, and the extending end of the telescopic motor extends into the groove and is connected with the abutting block.

Preferably, the chain pin sensing device comprises a mounting seat, a photoelectric sensor is mounted on the mounting seat, the output end of the photoelectric sensor is arranged right opposite to the chain pin of the driving chain, and the photoelectric sensor is electrically connected with the escalator host machine.

Preferably, the mounting seat is a U-shaped mounting seat, the driving chain passes through a groove of the U-shaped mounting seat, the photoelectric sensor includes a light emitter and a light receiver, and the light emitter and the light receiver are mounted on two groove walls of the U-shaped mounting seat in a face-to-face manner.

Preferably, the photoelectric sensor is an infrared photoelectric sensor.

Preferably, the photosensor is a visible photosensor.

Preferably, the photosensor is a diffusion reflection type photoelectric switch.

Has the advantages that: compared with the prior art, the utility model provides a pair of can prevent cracked protection switch of step chain, moreover, the steam generator is simple in structure, the controllability is strong, the long-time operation in-process of staircase, the drive chain round pin can be because the friction action slowly drops, detect the drive chain round pin when photoelectric sensor and break away from, can trigger photoelectric switch, cut off staircase host computer load current, make automatic escalator stall, and chain arresting gear presss from both sides the drive chain tightly simultaneously, prevent to take personnel and fall into the inside casualties that causes of staircase because of the broken chain, the safety of taking personnel has been guaranteed, play and prevent suffering from and the effect in advance, and the safety performance is improved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the chain brake;

fig. 3 is a schematic structural view of the pin sensing device.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.

Example 1

As shown in fig. 1-3, a protection switch capable of preventing a step chain from being broken includes an escalator main machine 1, a main machine gear 2 and a driving gear 3, the main machine gear 2 is fixedly sleeved on an output shaft of the escalator main machine 1, the main machine gear 2 and the driving gear 3 are in transmission connection through a driving chain b, a chain pin sensing device 5 is arranged between the main machine gear 2 and the driving gear 3, a plurality of driving gears 3 are in transmission connection through the driving chain b, a chain pin sensing device 5 and a chain braking device 4 are arranged between the driving gears 3, the chain braking device 4 and the chain pin sensing device 5 are arranged along the running direction of the driving chain b, and the chain pin sensing device 5, the chain braking device 4 and the escalator main machine 1 are all electrically connected with a controller (not shown in the figure); the chain pin sensing device 5 comprises a mounting seat 51, the mounting seat 51 is a U-shaped mounting seat, the driving chain b passes through a groove of the U-shaped mounting seat, a photoelectric sensor 52 is mounted on the mounting seat 51, the photoelectric sensor 52 is an infrared photoelectric sensor, the photoelectric sensor 52 comprises a light emitter and a light receiver, the light emitter and the light receiver are mounted on two groove walls of the U-shaped mounting seat in a face-to-face manner, the emitting end of the light emitter is arranged opposite to the chain pin of the driving chain b, and the photoelectric sensor 52 is electrically connected with the escalator main machine 1; the chain brake device 4 comprises a fixed seat 41 which is fixedly arranged on the escalator ladder frame a, the fixed seat 41 is vertically arranged, a groove is formed in the fixed seat 41, the driving chain b circularly passes through the groove, a telescopic motor 43 is arranged in the fixed seat 41, and the extending end of the telescopic motor 43 extends into the groove and is connected with a butt joint block 42.

During the operation of the escalator, the driving chain always passes through the grooves of the U-shaped mounting seat and the fixing seat, when the photoelectric sensor detects that the driving chain pin between the main machine gear and the driving gear falls off, the controller cuts off the load current of the main machine of the escalator, the escalator stops running, when the photoelectric sensor detects that the driving chain pin between the driving gears falls off, the load current of the main machine of the escalator is cut off, the telescopic motor is started simultaneously, the driving butt joint block tightly abuts the driving chain and the fixing seat groove, and potential safety hazards caused by chain breakage are effectively prevented.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and that those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.

Claims (8)

1. A protection switch capable of preventing step chain breakage is characterized in that: including staircase host computer (1), host computer gear (2) and a plurality of drive gear (3), host computer gear (2) are overlapped admittedly the output shaft of staircase host computer (1), host computer gear (2) and closest drive gear (3) are connected through drive chain drive, and are a plurality of drive gear (3) are connected through drive chain drive, each be equipped with chain round pin induction system (5) and chain brake device (4) between drive gear (3), chain brake device (4) with chain round pin induction system (5) are followed the traffic direction setting of drive chain, chain round pin induction system (5) chain brake device (4) and staircase host computer (1) all are connected with the controller electricity.

2. A protection switch for preventing a step chain from being broken according to claim 1, wherein: and a chain pin sensing device (5) is arranged between the main machine gear (2) and the closest driving gear (3).

3. A protection switch for preventing a step chain from being broken according to claim 1, wherein: chain arresting gear (4) are including just to fixing base (41) of setting on the staircase ladder frame fixedly, two fixing base (41) set up from top to bottom, fixing base (41) are seted up flutedly, the driving chain circulates through from the recess, be equipped with flexible motor (43) in fixing base (41), the end that stretches out of flexible motor (43) stretches into groove connection has butt joint piece (42).

4. A protection switch for preventing a step chain from being broken according to claim 1, wherein: the chain pin sensing device (5) comprises a mounting seat (51), a photoelectric sensor (52) is mounted on the mounting seat (51), the output end of the photoelectric sensor (52) is opposite to the chain pin of the driving chain, and the photoelectric sensor (52) is electrically connected with the escalator main machine (1).

5. The protection switch of claim 4, wherein the step chain is prevented from breaking, and the protection switch comprises: the mounting seat (51) is a U-shaped mounting seat, the driving chain passes through a groove of the U-shaped mounting seat, the photoelectric sensor (52) comprises a light emitter and a light receiver, and the light emitter and the light receiver are arranged on two groove walls of the U-shaped mounting seat in a face-to-face mode.

6. The protection switch of claim 5, wherein the step chain is prevented from breaking, and the protection switch comprises: the photoelectric sensor (52) is an infrared photoelectric sensor.

7. The protection switch of claim 5, wherein the step chain is prevented from breaking, and the protection switch comprises: the photoelectric sensor (52) is a visible light photoelectric sensor.

8. The protection switch of claim 5, wherein the step chain is prevented from breaking, and the protection switch comprises: the photosensor (52) is a diffusion reflection type photoelectric switch.

Images