Door recovery device and rail door system

Abstract

The utility model discloses a door recycling device and a rail door system. The door recycling device comprises a gear box, a ratchet wheel assembly, a gear shaft and a bevel gear box which is connected with the gear shaft and can control the gear shaft to rotate. The gear box comprises a gear seat and a winding wheel rotationally arranged in the gear seat, a steel wire rope connected with the emergency door is arranged on the winding wheel, a gear assembly is connected in the gear seat, a small gear in the gear assembly is fixed to a gear shaft, and a large gear set in the gear assembly controls the winding wheel to rotate under the action of the small gear; the ratchet wheel assembly comprises a mounting disc, a pawl and a ratchet wheel connected with the gear shaft are arranged in the mounting disc, a handle connected with the pawl is arranged on the mounting disc, and when the handle rotates to a first position, the pawl is separated from the ratchet wheel, so that the gear shaft can freely rotate; and when the handle rotates to the second position, the pawl is clamped with the ratchet wheel, so that the gear shaft can only rotate in one direction. The recovery reliability and safety of the heavy-load emergency door are improved.

Description

Technical Field

[0001] The present application relates to the technical field of track doors, and in particular to a door recovery device and a track door system. Background Art

[0002] At present, in the door system of rail transit trains, emergency evacuation doors are generally equipped with recovery devices, which are convenient for passengers to escape quickly in the event of an emergency failure. Generally, light-load evacuation doors do not need to be designed with special recovery devices, and ordinary force-enhancing mechanisms can meet the requirements. For heavy-load evacuation doors, this device needs to be added. In order to improve the safety, reliability and rapidity of emergency evacuation door recovery, a new emergency evacuation door recovery device is designed. Summary of the invention

[0003] The purpose of the present application is to provide a door recovery device and a track door system to improve the recovery reliability and safety of heavy-load evacuation doors.

[0004] In order to achieve the above objectives, this application is implemented by adopting the following technical solutions:

[0005] In a first aspect, the present application discloses a door recovery device, including a gear box, a ratchet assembly, a gear shaft, and a bevel gear box connected to the gear shaft and capable of controlling the rotation of the gear shaft;

[0006] The gear box includes a gear seat and a winding wheel rotatably arranged in the gear seat, the winding wheel is provided with a wire rope connected to the evacuation door, a gear assembly is connected in the gear seat, a small gear in the gear assembly is fixed on the gear shaft, and a large gear group in the gear assembly controls the winding wheel to rotate under the action of the small gear;

[0007] The ratchet assembly includes a mounting plate, in which a pawl and a ratchet connected to the gear shaft are arranged, and a handle connected to the pawl is arranged on the mounting plate. When the handle is rotated to a first position, the pawl disengages from the ratchet so that the gear shaft can rotate freely; when the handle is rotated to a second position, the pawl engages with the ratchet so that the gear shaft can rotate only in one direction.

[0008] Furthermore, a limit plate is provided on the mounting plate, and a first pin hole and a second pin hole are provided on the limit plate;

[0009] When the handle is in the first position, the limit pin passes through the first pin hole and is inserted into the handle; when the handle is in the second position, the limit pin passes through the second pin hole and is inserted into the handle.

[0010] Furthermore, the pawl is fixed on a connecting shaft in the mounting plate, and the handle is fixedly connected to the connecting shaft.

[0011] Further, the gear box is provided at both ends of the gear shaft;

[0012] The gear shaft and the support frame between the two gear boxes are rotatably connected.

[0013] Furthermore, there are two support frames, and the two support frames are evenly distributed on the gear shaft between the two gear boxes.

[0014] Further, the bevel gear box comprises a bevel gear seat rotatably connected to the gear shaft and bevel teeth fixed on the gear shaft, and the bevel teeth are meshed with large bevel teeth rotating in the bevel gear seat;

[0015] A connecting hole is provided at the center of the large bevel gear.

[0016] Furthermore, the connection hole portion is connected to the handle, or the connection hole portion is connected to the output shaft of the motor through a transmission member.

[0017] Further, the bevel gear is rotatably arranged in the bevel gear seat, and a washer is arranged between the bevel gear seat and the bevel gear;

[0018] A bushing is arranged between the large bevel gear and the bevel gear seat.

[0019] Furthermore, the large gear set includes a large gear meshing with the small gear and an intermediate gear meshing with the gear on the winding wheel shaft; the large gear and the intermediate gear are fixed on the same shaft.

[0020] In a second aspect, the present application discloses a track door system, including a frame, an evacuation door, and a door recovery device as described in any one of the first aspects;

[0021] The gear box, bevel gear box and ratchet assembly are all installed on the frame, and the end of the wire rope on the winding wheel is connected to the evacuation door.

[0022] The beneficial effects of this application are:

[0023] This application uses a ratchet assembly to ensure that the evacuation door will not be accidentally opened due to external force during the closing process, thereby improving the safety of the evacuation door during closing. The cooperation between the pawl and the ratchet ensures that the gear shaft can only rotate in one direction, thereby enhancing the reliability of the system. The opening and closing of the evacuation door can be controlled by a manual operating handle, which can respond quickly even in an emergency. In an emergency, even if there is no power support, the evacuation door can be closed manually to ensure the safety of the evacuation passage. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of the door recovery device of this application;

[0025] Figure 2 It is a schematic diagram of the structure of the gearbox in this application;

[0026] Figure 3 It is a structural schematic diagram of the bevel gearbox in this application;

[0027] Figure 4 This is a schematic diagram of the coordination of the handle, limit pin and mounting plate in this application.

[0028] Among them: 1. gear box; 2. wire rope; 3. support frame; 4. bevel gear box; 5. ratchet assembly; 6. gear shaft; 7. gear seat; 8. small gear; 9. large gear set; 10. winding wheel; 11. winding wheel shaft; 12. bevel gear seat; 13. large bevel gear; 14. bushing; 15. washer; 16. bevel gear; 17. mounting plate; 18. handle; 19. limit pin. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by this application easy to understand, this application is further explained below in conjunction with specific implementation methods.

[0030] It should be noted that in the description of the present application, the directions or positional relationships indicated by the terms "front", "rear", "left", "right", "up", "down", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application rather than requiring that the present application must be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. The terms "front", "rear", "left", "right", "up", and "down" used in the description of the present application refer to the directions in the accompanying drawings, and the terms "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0031] like Figures 1 to 4 As shown, a door recovery device comprises a gear box 1, a ratchet assembly 5, a gear shaft 6 and a bevel gear box 4 connected to the gear shaft 6 and capable of controlling the rotation of the gear shaft 6; the gear box 1 comprises a gear seat 7 and a winding wheel 10 rotatably arranged in the gear seat 7, the winding wheel 10 is provided with a wire rope 2 connected to the evacuation door, a gear assembly is connected in the gear seat 7, a small gear 8 in the gear assembly is fixed on the gear shaft 6, and a large gear set 9 in the gear assembly controls the rotation of the winding wheel 10 under the action of the small gear 8; the ratchet assembly 5 comprises a mounting plate 17, a ratchet pawl and a ratchet connected to the gear shaft 6 are arranged in the mounting plate 17, a handle 18 connected to the ratchet pawl is arranged on the mounting plate 17, the handle 18 is rotated to the first position, the ratchet pawl is disengaged from the ratchet wheel, so that the gear shaft 6 can rotate freely; the handle 18 is rotated to the second position, the ratchet pawl engages with the ratchet wheel, so that the gear shaft 6 can only rotate in one direction.

[0032] When the evacuation door needs to be opened, the wire rope 2 is released from the winding wheel 10 so that the evacuation door can be unfolded. At this moment, the handle 18 is in the first position so that the pawl is disengaged from the ratchet wheel, allowing the gear shaft 6 to rotate freely, thereby allowing the winding wheel 10 to release the wire rope 2.

[0033] When closing the evacuation door, the bevel gear box 4 is driven by external power such as manual operation or motor drive, and the bevel gear box 4 controls the rotation of the gear shaft 6. The small gear 8 on the gear shaft 6 rotates, thereby driving the large gear set 9 meshing with it to rotate. The rotation of the large gear set 9 causes the winding wheel 10 to rotate, thereby winding up the wire rope 2 and retracting the evacuation door to the closed position.

[0034] When closing the evacuation door, the operating handle 18 is controlled to the second position so that the pawl engages the ratchet wheel, limiting the gear shaft 6 to rotate in only one direction, preventing the evacuation door from accidentally opening during the closing process, thereby ensuring the reliability and safety of the door closing.

[0035] The present application ensures that the evacuation door will not be accidentally opened due to external force during the closing process by using a ratchet assembly, thereby improving the safety of the evacuation door during closing. The cooperation between the pawl and the ratchet ensures that the gear shaft 6 can only rotate in one direction, thereby enhancing the reliability of the system. The opening and closing of the evacuation door can be controlled by manually operating the handle 18, and a quick response can be achieved even in an emergency. In an emergency, even if there is no power supply support, the evacuation door can be closed by manual operation, thereby ensuring the safety of the evacuation passage.

[0036] The present application is described below by means of a specific embodiment.

[0037] like Figure 1 As shown, the present application connects two gear boxes 1 through a gear shaft 6 to control the recovery and release of the evacuation door, and controls whether the gear shaft 6 can rotate through the ratchet assembly 5 and controls the rotation of the gear shaft 6 through the bevel gear box 4, thereby effectively realizing the recovery and release of the evacuation door.

[0038] Specifically, the gear box 1 is as follows Figure 2 As shown, it includes a gear seat 7, a pinion 8, a large gear set 9, a winding wheel 10 and a winding wheel rotating shaft 11. The pinion 8, the large gear set 9, the winding wheel 10 and the winding wheel rotating shaft 11 are all arranged in the gear seat 7, the winding wheel 10 is fixed on the winding wheel rotating shaft 11, and a gear is also fixed on the winding wheel rotating shaft 11, and the winding wheel rotating shaft 11 is rotatably connected with the gear seat 7. The pinion 8 is fixed on the gear shaft 6, and the large gear set 9 includes a large gear, an intermediate gear and a shaft, the shaft rotates in the gear seat 7, the large gear and the intermediate gear are fixed on the shaft, the large gear and the pinion 8 are meshed, and the intermediate gear is meshed with the gear on the winding wheel rotating shaft 11.

[0039] When an external force acts on the gear shaft 6 (may be manual or motor driven) to rotate it, the pinion 8 rotates. The rotation of the pinion 8 is transmitted to the large gear of the large gear set 9 through meshing with the large gear, thereby rotating the entire large gear set 9. The rotation of the large gear set 9 is transmitted to the gear on the winding wheel shaft 11 through the intermediate gear. Finally, the winding wheel shaft 11 and the winding wheel 10 thereon rotate to complete the winding and releasing action of the wire rope 2.

[0040] The rotation of the control gear shaft 6 is realized by the bevel gear box 4. Specifically, the bevel gear box 4 is as follows: Figure 2 As shown, it includes a bevel gear seat 12, a large bevel tooth 13, a bushing 14, a washer 15 and a bevel tooth 16. The bevel tooth 16 is rotatably set in the bevel gear seat 12 through the washer 15. The bevel tooth 16 is fixedly connected to the gear shaft 6. The bevel gear seat 12 is also rotatably connected with a large bevel tooth 13 through the bushing 14. The large bevel tooth 13 and the bevel tooth 16 are meshed with each other, and a connecting hole is provided at the center of the large bevel tooth 13.

[0041] When the external power source is connected to the connection hole and drives the large bevel gear 13 to rotate, the large bevel gear 13 drives the bevel gear 16 to rotate through the meshing action with the bevel gear 16. Since the bevel gear 16 is fixedly connected to the gear shaft 6, the rotation of the bevel gear 16 is directly transmitted to the gear shaft 6. The rotation of the gear shaft 6 is then transmitted to the large gear set 9 through the pinion gear 8, and finally drives the winding wheel 10 to retract and release the wire rope 2.

[0042] Furthermore, the connecting hole can be a square hole, and the large bevel gear 13 can be controlled to rotate by inserting a square shaft handle. In other embodiments, the output shaft of the motor can be connected through a transmission member, such as a transmission shaft.

[0043] In the present application, in order to limit the rotation of the gear shaft 6, a ratchet assembly 5 is provided, and the ratchet assembly 5 includes a mounting plate 17, in which a pawl and a ratchet connected to the gear shaft 6 are provided, and a handle 18 connected to the pawl is provided on the mounting plate 17. When the handle 18 is rotated to the first position, the pawl disengages from the ratchet, so that the gear shaft 6 can rotate freely; the free rotation here means that the gear shaft 6 can rotate clockwise and counterclockwise, ensuring the smooth release of the evacuation door, and the release process only requires rotation in one direction, such as clockwise rotation. When the handle 18 is rotated to the second position, the pawl engages with the ratchet, so that the gear shaft 6 can only rotate in one direction, which is the direction of retrieving the evacuation door, such as counterclockwise. The possibility of clockwise rotation is limited by the pawl engaging the ratchet, and the safety of retrieving the evacuation door is ensured.

[0044] Furthermore, the pawl is fixed on the connecting shaft in the mounting plate 17, and the handle is fixedly connected to the shaft, forming a scheme in which the pawl is driven to move by rotating the handle 18, thereby adjusting the position of the pawl.

[0045] Furthermore, a limit plate is provided on the mounting plate 17, and a first pin hole and a second pin hole are provided on the limit plate; when the handle 18 is in the first position, the limit pin 19 can pass through the first pin hole and be inserted into the handle 18, and the evacuation door can be smoothly released at this time; when the handle 18 is in the second position, the limit pin 19 passes through the second pin hole and is inserted into the handle 18, and the evacuation door can be recovered at this time.

[0046] The specific usage process is as follows: before releasing the evacuation door, turn the handle clockwise to the first position, insert the limit pin 19 to position it, and automatically rotate and release it under the action of the external force gas spring to open the evacuation door; before retracting the evacuation door, turn the handle counterclockwise to the second position and insert the limit pin 19, manually operate the bevel gear box 4 with a square wrench to transmit the rotational motion to the winding wheel 10 to pull the wire rope 2 to rotate and wind the rope, and complete the retraction of the evacuation door.

[0047] In an emergency, the handle must be manually rotated clockwise to the middle neutral position and the evacuation door must be quickly released under the external force of the gas spring. When the emergency evacuation door is to be retracted, the handle must be manually rotated counterclockwise first. Under the action of the spring, the claw always presses the ratchet to ensure the safety of the retraction. The rope is manually retracted by a wrench or electric wrench around the pull drum and the evacuation door is retracted.

[0048] The present application has the following advantages: 1. It is easy to operate by manually rotating and recovering with a square wrench or an electric wrench; 2. It has a compact layout, and the left and right gear assemblies are connected through a gear shaft to realize the synchronous operation of the door recovery device on the left and right, so as to achieve a stable state of recovery during use; 3. It has a novel structure, large load-bearing capacity and strong reliability; 4. During recovery, the ratchet assembly has an anti-slip function to ensure safety; 5. It is suitable for rail emergency evacuation doors, has little impact on the size of the existing door system, and can be used in a variety of working conditions.

[0049] In one embodiment of the present application, a track door system is also disclosed, which includes a frame, an evacuation door and a door recovery device of any of the above embodiments; the door recovery device gear box 1, bevel gear box 4 and ratchet assembly 5 are all installed on the frame by screws, and the end of the wire rope 2 on the winding wheel 10 is connected to the evacuation door.

[0050] It is known from common technical knowledge that the present application can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present application or within the scope equivalent to the present application are included in the present application.

Claims

1. A door recovery device, characterized in that: It comprises a gear box (1), a ratchet assembly (5), a gear shaft (6), and a bevel gear box (4) connected to the gear shaft (6) and capable of controlling the rotation of the gear shaft (6); The gear box (1) comprises a gear seat (7) and a winding wheel (10) rotatably arranged in the gear seat (7); a steel wire rope (2) connected to the evacuation door is arranged on the winding wheel (10); a gear assembly is connected in the gear seat (7); a small gear (8) in the gear assembly is fixed on the gear shaft (6); and a large gear set (9) in the gear assembly controls the winding wheel (10) to rotate under the action of the small gear (8); The ratchet assembly (5) comprises a mounting plate (17), wherein a ratchet pawl and a ratchet connected to the gear shaft (6) are arranged in the mounting plate (17), and a handle (18) connected to the ratchet pawl is arranged on the mounting plate (17); when the handle (18) is rotated to a first position, the ratchet pawl is disengaged from the ratchet wheel, so that the gear shaft (6) can rotate freely; when the handle (18) is rotated to a second position, the ratchet pawl is engaged with the ratchet wheel, so that the gear shaft (6) can rotate in only one direction.

2. The door recovery device according to claim 1, characterized in that: The mounting plate (17) is provided with a limit plate, and the limit plate is provided with a first pin hole and a second pin hole; When the handle (18) is in the first position, the limit pin (19) passes through the first pin hole and is inserted into the handle (18); when the handle (18) is in the second position, the limit pin (19) passes through the second pin hole and is inserted into the handle (18).

3. The door recovery device according to claim 1, characterized in that: The ratchet pawl is fixed on a connecting shaft in the mounting plate (17), and the handle is fixedly connected to the connecting shaft.

4. The door recovery device according to claim 1, characterized in that: The gear box (1) is disposed at both ends of the gear shaft (6); The gear shaft (6) and the support frame (3) between the two gear boxes (1) are rotatably connected.

5. The door recovery device according to claim 4, characterized in that: There are two support frames (3), and the two support frames (3) are evenly distributed on the gear shaft (6) between the two gear boxes (1).

6. The door recovery device according to claim 1, characterized in that: The bevel gear box (4) comprises a bevel gear seat (12) rotatably connected to the gear shaft (6) and bevel teeth (16) fixed on the gear shaft (6), wherein the bevel teeth (16) mesh with large bevel teeth (13) rotating in the bevel gear seat (12); A connecting hole is provided at the center of the large bevel tooth (13).

7. The door recovery device according to claim 6, characterized in that: The connection hole portion is connected to the handle, or the connection hole portion is connected to the output shaft of the motor through a transmission member.

8. The door recovery device according to claim 6, characterized in that: The bevel teeth (16) are rotatably arranged in the bevel gear seat (12), and a washer (15) is arranged between the bevel gear seat (12) and the bevel teeth (16); A bushing (14) is provided between the large bevel tooth (13) and the bevel gear seat (12).

9. The door recovery device according to claim 1, characterized in that: The large gear set (9) comprises a large gear meshing with the small gear (8) and an intermediate gear meshing with the gear on the winding wheel rotating shaft (11); the large gear and the intermediate gear are fixed on the same rotating shaft.

10. A track door system, characterized in that: It comprises a frame, an evacuation door and a door recovery device according to any one of claims 1 to 9; The gear box (1), bevel gear box (4) and ratchet assembly (5) are all mounted on a frame, and the end of the steel wire rope (2) on the winding wheel (10) is connected to an evacuation door.

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