An emergency quick-opening device for a roller shutter door

Abstract

This utility model belongs to the technical field of subway maintenance equipment, and provides an emergency rapid opening device for a roller shutter door, including a fixing component, a transmission component, and a limiting component. The transmission component and the limiting component are both disposed within the fixing component. The transmission component includes a transmission shaft, a first transmission wheel, and a second transmission wheel. The transmission shaft is rotatably coupled to the fixing component. The first transmission wheel and the second transmission wheel are respectively disposed at one end and the other end of the transmission shaft. This application can quickly open entrance and exit roller shutter doors without damaging the door body, the chain, or the motor, improving processing efficiency. Furthermore, because it does not damage the door body, it saves the cost and time required for subsequent troubleshooting.

Description

Technical Field

[0001] This utility model belongs to the field of subway maintenance equipment technology, specifically relating to an emergency quick-opening device for a roller shutter door. Background Technology

[0002] Roller shutters, as a common entrance and exit device, are widely used in subway entrances and exits. They must be closed after the subway closes each day and reopened before the start of the next day's operation. Under normal operating conditions, the roller shutter's motor drives a chain via a gearbox to raise and lower the shutter. However, if the equipment malfunctions, such as during a power outage or due to worn gears in the gearbox, the shutter may fail to rise and this issue may not be addressed promptly. Passengers will then have to detour through other entrances and exits, disrupting their travel plans and negatively impacting the subway's service image. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide an emergency quick-opening device for roller shutter doors that can solve the above-mentioned functions.

[0004] The technical solution adopted by this utility model to solve its technical problem is: An emergency quick-opening device for a roller shutter door includes: a fixing component, a transmission component, and a limiting component, wherein the transmission component and the limiting component are both disposed on the fixing component; The transmission assembly includes a transmission shaft, a first transmission wheel, and a second transmission wheel. The transmission shaft is rotatably coupled to the fixed assembly. The first transmission wheel and the second transmission wheel are respectively located at one end and the other end of the transmission shaft. The limiting assembly includes a limiting wheel and a limiting member. The limiting wheel is located at one end of the transmission shaft. The limiting member is rotatably engaged with the fixing assembly. The limiting wheel has a limiting portion. When the limiting wheel rotates in the forward direction, one end of the limiting member can engage with the limiting portion. When the limiting wheel rotates in the reverse direction, one end of the limiting member can separate from the limiting portion.

[0005] Preferably, the fixing component includes a first fixing seat, a second fixing seat, and a third fixing seat. The second fixing seat is connected to the first fixing seat and the third fixing seat respectively. The limiting member is rotatably engaged with the second fixing seat and the limiting member is rotatably engaged with the third fixing seat.

[0006] Preferably, the first fixing seat is provided with a first fixing bolt, the second fixing seat is provided with a sliding groove that slides with the first fixing bolt, and one end of the first fixing bolt is provided with a first fixing nut.

[0007] Preferably, the first fixing base is provided with a first fixing part, and there are two first fixing parts, which are respectively provided on both sides of the first fixing bolt. The first fixing part is a long strip-shaped through hole structure.

[0008] Preferably, the end of the second fixing seat is connected to the middle of the third fixing seat, and the second fixing seat and the third fixing seat are arranged perpendicularly.

[0009] Preferably, the number of the limiting members is two, and they are respectively provided on both sides of the limiting wheel.

[0010] Preferably, the limiting wheel includes a first limiting wheel and a second limiting wheel. The first limiting wheel and the second limiting wheel have the same structure. The outer wall surface of the first limiting wheel is evenly distributed with a plurality of limiting grooves along the radial direction of the first limiting wheel. The groove openings of the first limiting wheel are oriented opposite to the groove openings of the second limiting wheel. The limiting grooves of the first limiting wheel or the second limiting wheel are the limiting parts of the limiting wheel.

[0011] Preferably, a connecting column is provided on the first transmission wheel, and the cross-section of the connecting column is hexagonal.

[0012] Preferably, the limiting member is triangular in shape.

[0013] Compared with the prior art, the beneficial effects of this utility model include: The emergency quick-opening device for the roller shutter door of this application is fixed to the roller shutter door. The second drive wheel is engaged with the linkage chain at the roller shutter door. The operator uses a tool to rotate the first drive wheel, which in turn drives the second drive wheel to rotate, thereby driving the linkage chain at the roller shutter door to rotate, thus realizing the opening and closing operation of the roller shutter door. It can quickly open the entrance roller shutter door without damaging the door body, the chain, or the motor, improving processing efficiency. At the same time, since it does not damage the door body, it saves the cost and time required for subsequent fault handling. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a front view of the present invention.

[0016] Figure 2 This is a side view of the present invention.

[0017] Figure 3 This is a structural diagram of the second limiting wheel of this utility model.

[0018] Figure 4 This is a schematic diagram illustrating a specific application scenario of this utility model.

[0019] in: 1-Drive shaft, 2-First drive wheel, 3-Second drive wheel, 4-Limiting component, 5-First fixed seat, 6-Second fixed seat, 7-Third fixed seat, 8-First fixing bolt component, 9-Slide groove, 10-First fixing nut component, 11-First fixing part, 12-First limiting wheel, 13-Second limiting wheel, 14-Limiting groove, 15-Linkage chain, 16-Connecting column. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, it will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of this utility model; the described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0022] Example: like Figure 1-4 As shown, this embodiment provides an emergency quick-opening device for a roller shutter door, including: a fixing component, a transmission component, and a limiting component, wherein the transmission component and the limiting component are both disposed within the fixing component; The transmission assembly includes a transmission shaft 1, a first transmission wheel 2, and a second transmission wheel 3. The transmission shaft 1 is rotatably coupled with the fixed assembly. The first transmission wheel and the second transmission wheel 3 are respectively located at one end and the other end of the transmission shaft 1. The limiting assembly includes a limiting wheel and a limiting member 4. The limiting wheel is located at one end of the transmission shaft 1. The limiting member 4 is rotatably engaged with the fixed assembly. The limiting wheel has a limiting part. When the limiting wheel rotates in the positive direction, one end of the limiting member 4 can engage with the limiting part. When the limiting wheel rotates in the opposite direction, one end of the limiting member 4 can separate from the limiting part.

[0023] The specific application scenarios of the emergency rapid activation device in this embodiment are as follows: The entire device is fixed to the roller shutter door using a fixing component. The second drive wheel 3 is engaged with the linkage chain 15 at the roller shutter door. The operator uses a tool to rotate the first drive wheel 2, which in turn drives the second drive wheel 3 to rotate, thereby driving the linkage chain 15 at the roller shutter door to rotate, thus realizing the opening and closing operation of the roller shutter door. The entrance and exit roller shutter door can be opened quickly without damaging the door body, the chain, or the motor, improving processing efficiency. At the same time, since no damage is caused to the door body, it saves the cost and time required for subsequent troubleshooting.

[0024] It should also be noted that this embodiment can achieve a unidirectional limiting function. When the limiting wheel rotates in the positive direction, one end of the limiting member 4 can cooperate with the limiting part. When the limiting wheel rotates in the opposite direction, one end of the limiting member 4 can separate from the limiting part. According to the above limitation, the second transmission wheel 3 can drive the linkage chain 15 to rotate in a single direction. For example, it can be realized that the roller shutter door can only be opened upward by the emergency quick opening device. When the roller shutter door is closed downward, that is, when the limiting wheel is rotated in the positive direction, one end of the limiting member 4 can cooperate with the limiting part to achieve the limiting effect, prevent the roller shutter door from automatically closing downward, and improve the safety of the operation scenario.

[0025] The specific structure of the fixing component in this embodiment is as follows: It includes a first fixed seat 5, a second fixed seat 6 and a third fixed seat 7. The second fixed seat 6 is connected to the first fixed seat 5 and the third fixed seat 7 respectively. The limiting member 4 is rotatably engaged with the second fixed seat 6 and the third fixed seat 7.

[0026] Specifically, the first fixing seat 5 is provided with a first fixing bolt 8, the second fixing seat 6 is provided with a sliding groove 9 that slides with the first fixing bolt 8, and one end of the first fixing bolt 8 is provided with a first fixing nut 10.

[0027] Specifically, the first fixing seat 5 is provided with a first fixing part 11. There are two first fixing parts 11, and each of them is provided on both sides of the first fixing bolt 8. The first fixing part 11 is a long strip-shaped through hole structure.

[0028] Specifically, the end of the second fixing seat 6 is connected to the middle of the third fixing seat 7, and the second fixing seat 6 and the third fixing seat 7 are arranged perpendicularly.

[0029] Specifically, there are two limiting components 4, which are respectively located on both sides of the limiting wheel.

[0030] The specific structure of the limiting wheel in this embodiment is as follows: It includes a first limiting wheel 12 and a second limiting wheel 13. The first limiting wheel 12 and the second limiting wheel 13 have the same structure. The outer wall surface of the first limiting wheel 12 is evenly distributed with a plurality of limiting grooves 14 along the radial direction of the first limiting wheel 12. The groove openings of the limiting grooves 14 of the first limiting wheel 12 are arranged opposite to the groove openings of the limiting grooves 14 of the second limiting wheel 13. The limiting grooves 14 of the first limiting wheel 12 or the limiting grooves 14 of the second limiting wheel 13 are the limiting parts of the limiting wheel. The limiting component 4 is triangular in shape.

[0031] Based on the above structure, the specific application scenario method of this embodiment is as follows: The first fixed seat 5 is longitudinally fixed to the roller shutter door. A fixing component, such as a bolt, is installed on the first fixing part 11 of the first fixed seat 5 for fixation. Then, based on the position of the linkage chain 15 at the roller shutter door, the relative position of the second fixed seat 6 and the first fixed seat 5 is adjusted. After adjustment, the first fixing bolt 8 and the first fixing nut 10 are locked together. The linkage chain 15 is then fitted onto the second transmission wheel 3. It should be noted that before rotating the first transmission wheel 2, one end of the limiting component 4 should be brought into contact with the limiting wheel. Figure 4 As shown in the contents, the first limiting wheel 12 and the second limiting wheel 13 are positioned opposite each other on the left side of the first fixing bolt 8. At the same time, the groove of the limiting groove 14 of the first limiting wheel 12 is set in a clockwise direction, and the groove of the limiting groove 14 of the second limiting wheel 13 is set in a counterclockwise direction. Then, the positions of the limiting member 4 and the second fixing seat 6 are adjusted so that the positions of the limiting member 4 and the second limiting wheel 13 correspond. When the user rotates the first drive wheel 2 clockwise using a tool, it drives the first limit wheel 12 and the second limit wheel 13 to rotate clockwise. When the second limit wheel 13 rotates clockwise, because of the orientation of the groove 14 of the second limit wheel 13, the groove 14 of the second limit wheel 13 will not restrict the limit member 4, thus ensuring the rotation of the linkage chain 15, thereby driving the roller shutter to open. When the user releases the clockwise rotation of the first drive wheel 2, the roller shutter will drive the second limit wheel 13 to move counterclockwise under the action of gravity. At this time, the groove 14 of the second limit wheel 13 will cooperate with one end of the limit member 4 to achieve the function of automatic limit and prevent the roller shutter from descending.

[0032] Because the limiting components 4 are respectively located on both sides of the limiting wheel, depending on the usage scenario, when the linkage chain 15 is on the other side of the emergency quick-opening device, the automatic limiting function can be achieved through the structure of the limiting component 4 on the other side and the first limiting wheel 12.

[0033] In this embodiment, a connecting post 16 is provided on the first transmission wheel 2. The cross-section of the connecting post 16 is hexagonal. The connecting post can cooperate with the internal hex wrench to increase the tool's adaptability.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. An emergency quick release device for a roller shutter, characterised in that, include: The system includes a fixed component, a transmission component, and a limiting component, wherein the transmission component and the limiting component are both disposed on the fixed component. The transmission assembly includes a transmission shaft, a first transmission wheel, and a second transmission wheel. The transmission shaft is rotatably coupled to the fixed assembly. The first transmission wheel and the second transmission wheel are respectively located at one end and the other end of the transmission shaft. The limiting assembly includes a limiting wheel and a limiting member. The limiting wheel is located at one end of the transmission shaft. The limiting member is rotatably engaged with the fixing assembly. The limiting wheel has a limiting portion. When the limiting wheel rotates in the forward direction, one end of the limiting member can engage with the limiting portion. When the limiting wheel rotates in the reverse direction, one end of the limiting member can separate from the limiting portion.

2. A roller shutter emergency quick-opening device according to claim 1, characterised in that, The fixing assembly includes a first fixing seat, a second fixing seat, and a third fixing seat. The second fixing seat is connected to the first fixing seat and the third fixing seat respectively. The limiting member is rotatably engaged with the second fixing seat and the limiting member is rotatably engaged with the third fixing seat.

3. A roller shutter emergency quick-opening device according to claim 2, characterised in that, The first fixing seat is provided with a first fixing bolt, the second fixing seat is provided with a sliding groove that slides with the first fixing bolt, and one end of the first fixing bolt is provided with a first fixing nut.

4. A roller shutter emergency fast opening device according to claim 3, characterised in that, The first fixing base is provided with a first fixing part. There are two first fixing parts, which are respectively provided on both sides of the first fixing bolt. The first fixing part is a long strip-shaped through hole structure.

5. A roller shutter emergency quick-opening device according to claim 2, characterised in that, The end of the second fixing seat is connected to the middle of the third fixing seat, and the second fixing seat and the third fixing seat are arranged perpendicularly.

6. A roller shutter emergency quick-opening device according to claim 5, characterised in that, The number of limiting components is two, and they are respectively located on both sides of the limiting wheel.

7. A roller shutter emergency quick-opening device according to claim 6, characterised in that, The limiting wheel includes a first limiting wheel and a second limiting wheel. The first limiting wheel and the second limiting wheel have the same structure. The outer wall surface of the first limiting wheel is evenly distributed with a plurality of limiting grooves along the radial direction of the first limiting wheel. The groove openings of the first limiting wheel are oriented opposite to the groove openings of the second limiting wheel. The limiting grooves of the first limiting wheel or the second limiting wheel are the limiting parts of the limiting wheel.

8. A roller shutter emergency quick-opening device according to claim 1, characterised in that, A connecting column is provided on the first transmission wheel, and the cross-section of the connecting column is hexagonal.

9. A roller shutter emergency quick-opening device according to claim 1, characterised in that, The limiting member is triangular in shape.

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