CN210286420U

CN210286420U - Mechanical anti-reversion protection device for handcart escalator

Info

Publication number: CN210286420U
Application number: CN201921114876.3U
Authority: CN
Inventors: 孙世昌; 陆晓兰; 郝芷琦; 周斌
Original assignee: SJEC Corp
Current assignee: SJEC Corp
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-04-10
Anticipated expiration: 2029-07-16

Abstract

The utility model relates to a mechanical anti-reversion protection device for an automatic trolley ladder, which comprises a support piece, a positioning part, a shaft, a limit pin, a shaft fixing part and a stop lever component; the blocking rod assembly comprises a balancing weight, a rod body and a buffer cushion, the buffer cushion is made of non-metal materials, and one end of the buffer cushion is in an arc shape which is concave inwards, so that the buffer cushion can be conveniently contacted with a conveying chain roller of the automatic ladder of the trolley; the supporting piece is fixed on a guide rail side plate at the upper horizontal section of the automatic trolley ladder through a bolt assembly; the rod body is fixed on the shaft through a round hole in the rod body, the two sides of the rod body are limited through the positioning parts, the rod body is prevented from moving towards the two sides, and the stop rod assembly rotates around the shaft and is limited through the limiting pin. The protection device has the advantages that: the trolley automatic ladder has the advantages that no electric equipment is needed, the trolley automatic ladder is prevented from moving backwards due to chain breakage of the driving chain under the action of gravity of the trolley automatic ladder conveying chain and the anti-reversing device, and safety and reliability are realized.

Description

Mechanical anti-reversion protection device for handcart escalator

Technical Field

The utility model relates to a prevent reversing protection device, especially relate to a mechanical type prevents reversing protection device for handcart escalator.

Background

Along with the land value is higher and higher, more and more shopping malls and shopping center replace the moving walk for making things convenient for customer selection installation space utilization's handcart escalator higher, handcart escalator divide into two kinds of ladders of going upward and descending, handcart escalator that goes upward need drag the goods on handcart and the handcart from bottom to top, relatively descending, the risk of chain rupture appears more easily in the last driving chain, if the chain rupture condition appears in the operation, the handcart escalator can reverse acceleration run under the action of gravity of handcart and goods, if handcart escalator does not dispose easy equipment of anti-reversion protection device and damage or injure customer.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model aims at providing a mechanical anti-reversion protection device for a handcart escalator which is safe, reliable and simple in structure.

In order to achieve the above object, the utility model provides a mechanical anti-reversion protection device for an automatic trolley ladder, which comprises a support piece, a positioning part, a shaft, a limit pin, a shaft fixing part and a stop lever component; the blocking rod assembly comprises a balancing weight, a rod body and a buffer cushion, the buffer cushion is made of non-metal materials, one end of the buffer cushion is in a shape of an arc which is inwards concave, and the buffer cushion is convenient to contact with a transmission chain roller of the automatic ladder of the trolley; the supporting piece is fixed on a guide rail side plate at the upper horizontal section of the automatic trolley ladder through a bolt assembly; the rod body is fixed on the shaft through a round hole in the rod body, the two sides of the rod body are limited through the positioning parts, the rod body is prevented from moving towards the two sides, and the stop rod assembly rotates around the shaft and is limited through the limiting pin.

Preferably, the positioning member is two positioning sleeves which pass through the shaft, being disposed at both sides of the rod body.

Preferably, the positioning part is two positioning washers which pass through the shaft and are fixedly installed at both sides of the rod body.

Preferably, the shaft fixing part is a shaft snap spring, and the shaft is fixed on the support member through the shaft snap spring.

Preferably, the cushion pad is made of a rubber material.

The utility model provides a pair of a mechanical type anti-reversion protection device for handcart escalator's advantage lies in: the trolley automatic ladder has the advantages that no electric equipment is needed, the trolley automatic ladder is prevented from moving backwards due to chain breakage of the driving chain under the action of gravity of the trolley automatic ladder conveying chain and the anti-reversing device, and safety and reliability are realized.

Drawings

FIG. 1 is a schematic view of the transmission principle of a cart escalator;

FIG. 2 is a schematic view of the installation structure of the mechanical anti-reverse protection device;

FIG. 3 is a cross-sectional view of the mechanical anti-inversion guard;

FIG. 4 is an enlarged schematic view at A in FIG. 3;

FIG. 5 is a schematic view of a mechanical anti-reverse protection device;

FIG. 6 is a schematic view of a lever assembly;

FIG. 7 is a schematic diagram of a normal operation of a transmission chain;

FIG. 8 is a schematic diagram of a normal operation of a conveyor chain;

FIG. 9 is a schematic diagram of the reverse run of the transport chain

Wherein:

1. a cart; 2. a cart rear wheel guide rail; 3. a drive device; 4. a drive chain; 5. a front wheel guide rail of the handcart; 6. a conveyor chain; 7. a guide rail side plate; 8. a mechanical anti-reversion protection device; 9. a bolt assembly; 10. a support member; 11. a positioning sleeve; 12. a shaft; 13. a spacing pin; 14. a clamp spring for the shaft; 15. a lever assembly; 16. a balancing weight; 17. a rod body; 18. a cushion pad.

Detailed Description

As shown in fig. 1 to 9, the present invention provides a mechanical anti-reverse protection device for an escalator of a trolley, which comprises a support member 10, a positioning member, a shaft 12, a limit pin 13, a shaft fixing member and a stop lever assembly; the stop lever assembly 15 comprises a balancing weight 16, a lever body 17 and a buffer pad 18, wherein the buffer pad 18 is made of a non-metal material, and one end of the buffer pad is in an arc shape which is concave inwards, so that the buffer pad is conveniently contacted with a roller of the conveying chain 6 of the automatic ladder of the trolley; the supporting piece 10 is fixed on the guide rail side plate 7 at the upper horizontal section of the automatic trolley ladder through a bolt assembly 9; the rod body 17 is fixed on the shaft 12 through a round hole in the rod body, the two sides of the rod body are limited through the positioning parts, the rod body 17 is prevented from moving towards the two sides, and the stop lever assembly 15 rotates around the shaft 12 and is limited through the limiting pin 13.

The positioning means may be two positioning sleeves 11 passing through the shaft 12, arranged on both sides of the rod body; or two positioning gaskets which pass through the shaft and are fixedly arranged on two sides of the rod body.

The shaft fixing part is a shaft snap spring 14, and the shaft 12 is fixed on the support 10 through the shaft snap spring 14. The cushion pad 18 is made of a rubber material.

When the automatic handcart elevator normally operates, referring to fig. 7 and 8, the driving device 3 drives the conveying chain 6 to operate through the driving chain 4, the handcart 1 moves upwards along the handcart rear wheel guide rail 2 and the handcart front wheel guide rail 5, when the roller on the conveying chain 6 is contacted with the blocking rod assembly 15 of the mechanical anti-reverse protection device 8, the blocking rod assembly 15 rotates clockwise along the shaft 12 under the action of the conveying chain 6, so that the conveying chain 6 can smoothly pass through the blocking rod assembly 15, and after the roller of the conveying chain 6 runs through the blocking rod assembly 15, the blocking rod assembly 15 rotates counterclockwise under the action of the counter weight 16 and the self gravity and resets until contacting with the limit pin 13. If no abnormal situation occurs, the mechanical anti-reverse protection device 8 will repeat the above steps.

When the driving chain 4 is broken, the trolley escalator can run in the reverse direction, referring to fig. 9, the conveying chain 6 can also run in the reverse direction, the rollers on the conveying chain 6 can be in contact with the cushion pads 18 on the stop lever assemblies 15, the stop lever assemblies 15 tend to rotate anticlockwise, but cannot rotate under the action of the limiting pins 13, the conveying chain 6 stops running under the action of the stop lever assemblies 15, and the trolley is prevented from being accelerated to run downwards to cause equipment damage or injury to customers.

Besides using the counterweight 16 and self gravity to reset the gear lever assembly 15, the gear lever assembly 15 can also use an elastic element to reset, and in order to reduce noise and vibration generated by contact between the gear lever assembly 15 and the roller of the conveying chain 6, a damping and silencing device such as a rubber damping pad can be added at the contact position of the gear lever assembly 15 and the roller.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and changes will readily occur to those skilled in the art based upon the teachings of the present invention. Therefore, the technical solutions that can be obtained by logic analysis, reasoning or limited experiments based on the prior art according to the design concept of the present invention should be within the scope of the present invention and/or the protection scope defined by the claims.

Claims

1. The utility model provides a mechanical type anti-reversion protection device for handcart escalator which characterized in that: comprises a supporting piece (10), a positioning component, a shaft (12), a limiting pin (13), a shaft fixing component and a stop lever component (15); the blocking rod assembly (15) comprises a balancing weight (16), a rod body (17) and a cushion pad (18), the cushion pad (18) is made of non-metal materials, one end of the cushion pad is in a shape of an arc which is inwards concave, and the cushion pad is convenient to contact with a conveying chain roller of the automatic ladder of the trolley; the supporting piece (10) is fixed on a guide rail side plate (7) at the upper horizontal section of the automatic trolley ladder through a bolt assembly (9); the rod body (17) is fixed on the shaft (12) through a round hole in the rod body, the two sides of the rod body are limited through the positioning parts, the rod body is prevented from moving towards the two sides, and the stop lever component (15) rotates around the shaft (12) and is limited through the limiting pin (13).

2. A mechanical anti-reversion protection device for a trolley escalator as claimed in claim 1, wherein: the positioning means are two positioning sleeves (11) passing through the shaft (12) and arranged on either side of the rod body (17).

3. A mechanical anti-reversion protection device for a trolley escalator as claimed in claim 1, wherein: the positioning component is two positioning gaskets, and the two positioning gaskets penetrate through the shaft and are fixedly arranged on two sides of the rod body.

4. A mechanical anti-reversion protection device for a trolley escalator as claimed in claim 2, characterized in that: the shaft fixing part is a shaft snap spring (14), and the shaft (12) is fixed on the support piece (10) through the shaft snap spring (14).

5. A mechanical anti-reversion protection device for a trolley escalator as claimed in claim 4, wherein: the cushion pad (18) is made of a rubber material.