Door recovery device for rail transit

Abstract

The utility model discloses a door recycling device for rail transit, which comprises stay wire disc assemblies which are positioned on the same mounting surface and are symmetrically arranged left and right, and a recycling gear which is positioned in the middle and is used for simultaneously driving the left and right stay wire disc assemblies to rotate, and pawls for limiting the rotating direction of the pinion are symmetrically arranged on the left and right sides above the connecting shaft of the pinion. According to the retractable door, the door can be retracted in the middle of the door or the door frame, the retractable field is wide, and operation is more convenient.

Description

Technical Field

[0001] The utility model relates to a door recycling device, in particular to a door recycling device for rail transit. Background Art

[0002] At present, in the emergency evacuation door system of rail transit, the recycling of the emergency evacuation door mainly relies on the ratchet recycling component installed on the side of the door frame to drive the recycling belt installed on the door leaf for recycling. For example, a rail transit emergency evacuation ramp recycling device disclosed in the utility model patent with the publication number of CN221316140U has two wire spools arranged in parallel and fixed on both sides of the door frame respectively. The ratchet is connected to the rotating shaft of the wire spool, and a pawl is arranged on one side of the ratchet. The pawl is inserted into the ratchet teeth, and the door leaf is recycled unidirectionally. In this solution, when the operator recycles the door leaf, he needs to lean towards one side of the door frame, and the field of vision is limited. Content of the Utility Model

[0003] Purpose of the Utility Model: The purpose of the utility model is to provide a door recycling device for rail transit that can recycle the door in the middle.

[0004] Technical Solution: A door recycling device for rail transit described in the utility model includes wire spool assemblies that are symmetrically arranged left and right on the same installation surface, a recycling gear that drives the left and right wire spool assemblies to rotate simultaneously in the middle, a small gear meshed and connected to one side of the recycling gear, and pawls that are symmetrically arranged left and right above the connecting shaft of the small gear to limit the rotation direction of the small gear.

[0005] Preferably, the wire spool assembly includes a large gear and a retaining ring connected coaxially. The large gear is meshed with the recycling gear. A boss for winding the recycling rope is arranged on one side of the large gear close to the retaining ring, and a spacer for guiding the recycling rope is eccentrically arranged between the large gear and the baffle.

[0006] Preferably, a polygonal hole for connecting with a recycling rod is arranged in the middle of the recycling gear.

[0007] Preferably, the connecting shaft of the small gear is connected to a ratchet head. The pawl is arranged above the ratchet head. Clamping lines are arranged on the outer circumference of the ratchet head and one end of the pawl close to the ratchet head. When the pawl is obliquely lapped above the ratchet head, the unidirectional rotation of the ratchet head is restricted.

[0008] Preferably, a rotating shaft for disengaging the pawl is arranged in the middle of the pawl, and the rotating shaft is connected with a handle.

[0009] Preferably, the top of the rotating shaft is an arc surface, and the bottom is a triangular avoidance inclined surface. When the rotating shaft rotates, the pawl leaves the arc surface and lapped with the ratchet head.

[0010] Preferably, the ratchet head, the pawl, and the rotating shaft are arranged in an installation disk. The axial directions of the ratchet head and the rotating shaft are rotationally connected with the installation disk, and one end of the pawl far from the ratchet head is rotationally connected with the inner side wall of the installation disk.

[0011] Preferably, the door recycling device further includes a mounting plate and a cover plate. The two ends of the mounting plate and the cover plate are connected by a support pedal to form a mounting cavity. The left and right wire spool assemblies, the recycling gear, and the pinion are all arranged in the mounting cavity and are rotatably connected to the mounting plate and / or the cover plate.

[0012] Preferably, the support pedal is provided with a kidney-shaped hole for the recycling rope to pass through.

[0013] Preferably, a limiting bushing for guiding the recycling rope is provided on the mounting plate between the left and right wire spool assemblies.

[0014] Beneficial effects: Compared with the prior art, the present utility model has the following advantages: 1. Recycling the door leaf in the middle of the door or door frame to broaden the vision; 2. Simple structure and simple operation: The recycling of the door is realized through gear transmission, which is compatible with manual or electric tools, with small recycling force and short recycling time; 3. Having a self-locking function, making it safer; 4. Easy to install: The left and right wire spool assemblies are both integrated on the mounting plate. During installation, the mounting plate can be directly fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a schematic diagram of the internal structure of the present utility model;

[0017] Figure 3 is a schematic diagram of the gear assembly structure of the present utility model;

[0018] Figure 4 is a schematic diagram of the ratchet assembly structure of the present utility model;

[0019] Figure 5 is a schematic diagram of the counterclockwise limit structure of the ratchet assembly of the present utility model;

[0020] Figure 6 is a schematic diagram of the clockwise limit structure of the ratchet assembly of the present utility model;

[0021] Figure 7 is a schematic diagram of the non-limited structure of the ratchet assembly of the present utility model. DETAILED DESCRIPTION OF THE INVENTION

[0022] The technical solutions of the present utility model will be further described below with reference to the accompanying drawings.

[0023] As Figure 1 and Figure 2As shown in the figure, the door recovery device of the present utility model mainly consists of a wire pulling disc assembly 6, a recovery gear 10, and a ratchet assembly 7. The wire pulling disc assembly 6, the recovery gear 10, and the ratchet assembly 7 are fixed between the mounting plate and the cover plate 3 and can rotate. Pedal supports 2 and 5 are provided at both ends of the mounting plate 14, and both ends of the cover plate 3 are connected to the pedal supports 2 and 5, thus being connected to the mounting plate 14. A cushion block 11 is installed at the middle bottom of the mounting plate 14, and the pedal supports 2 and 5 are provided with waist-shaped holes for the door recovery rope 1 to pass through.

[0024] The wire pulling disc assembly 6 is connected to the mounting plate 14. As Figure 2 shown, there are two wire pulling disc assemblies 6, which are located on the same mounting surface and are symmetrically arranged left and right. As Figure 3 shown, the wire pulling disc assembly 6 mainly consists of a large gear 15 and a retaining ring 16. The large gear 15 and the retaining ring 16 are coaxially connected. A boss is provided on one side of the large gear 15 close to the retaining ring 16, and the boss is used for winding the recovery rope 1. An annular groove is formed by the large gear 15, the boss, and the retaining ring 16 to limit the recovery rope in the annular groove. There are through holes in the centers of the large gear 15 and the retaining ring 16. The rope winding shaft 12 is fixed between the mounting plate 14 and the cover plate 3, and the large gear 15 and the retaining ring 16 are sleeved on the rope winding shaft 12 and are rotationally connected to the mounting plate 14 and the cover plate 3 through the rope winding shaft 12. An eccentric spacer 17 is connected between the large gear 15 and the retaining ring 16, and the spacer 17 is used to guide the recovery rope to wind on the boss.

[0025] The recovery gear 10 is installed in the middle of the wire pulling disc assembly 6, and the center is rotationally connected to the mounting plate 14 through a mounting shaft. The recovery gear 10 meshes with the large gears 15 of the left and right wire pulling disc assemblies 6 at the same time. Driving the recovery gear 10 can drive the wire pulling disc assembly 6 to rotate and wind the recovery rope 1. A polygonal hole is provided in the middle of the mounting shaft of the recovery gear 10, and this hole is used to connect with the recovery rod 25 to drive the recovery gear 10 to rotate.

[0026] A ratchet assembly 7 is provided on one side of the recovery gear 10. As Figure 4 shown, the ratchet assembly 7 consists of a switching handle 18, a handle rotating shaft 23, a mounting disc 19, a ratchet head 20, a ratchet cover plate 21, a left ratchet pawl 22, and a right ratchet pawl 22. The mounting disc 19 is connected to the mounting plate 14. A gourd-shaped mounting groove is provided on the mounting disc 19. One end of the mounting groove is rotationally connected to the ratchet head 20, and a pin hole with a semicircular cross-section is provided on the side wall of the other end to connect the left ratchet pawl 22 and the right ratchet pawl 22. The connecting shaft of the ratchet head 20 is connected to a small gear 8, and the small gear 8 meshes with the recovery gear 10. Tooth-shaped lines are provided on the outer periphery of the ratchet head 20. Semicircular pin shafts that match the pin hole are provided at the tops of the left ratchet pawl 22 and the right ratchet pawl 22, and the pin shafts are embedded in the pin hole. The left ratchet pawl 22 and the right ratchet pawl 22 can rotate around the pin hole. Tooth-shaped lines identical to those on the outer periphery of the ratchet head 20 are provided at the bottoms of the left ratchet pawl 22 and the right ratchet pawl 22, and they are obliquely placed on the ratchet head 20.

[0027] A rotating shaft 23 rotatably connected to the mounting disc 19 is provided between the left pawl 22 and the right pawl 22. The lower side of the rotating shaft 23 is symmetrically beveled to form a triangular avoidance surface, and the upper side is an arc surface. As Figure 5 , Figure 6 , when the left and right rotating shafts 23 are rotated, and the arc side thereof abuts against the inner wall of the left pawl 22 or the right pawl 22, the left pawl 22 or the right pawl 22 is lifted, and the bottom end leaves the ratchet head 20, and the ratchet head 20 can rotate unidirectionally; as Figure 7 , when the handle rotating shaft 23 is rotated until its center line coincides with the center lines of the left pawl 22 and the right pawl 22, the arc surface of the handle rotating shaft 23 abuts against the inner walls of the left pawl 22 and the right pawl 22 at the same time, and the bottoms of the left pawl 22 and the right pawl 22 both leave the ratchet head 20, and the ratchet head 20 can rotate freely in both forward and reverse directions. A cover plate 20 is provided outside the installation groove. The rotating shaft 23 extends out of the installation groove and is connected to the handle 18.

[0028] A limit bushing 13 is provided on the mounting plate 14 between the left and right cable reel assemblies 6 for guiding the recovery rope 1 and simultaneously supporting the cover plate 3 connected to the mounting plate 14. A deep groove ball bearing 9 for supporting the rotation of the recovery gear 10 is provided inside the cover plate 3. The recovery gear 10 is axially connected to the inner ring of the deep groove ball bearing 9, and a flange 4 is connected to the outside of the cover plate 3. The inner ring of the flange 4 is matched with the outer ring of the deep groove ball bearing.

[0029] During use, the recovery rope 1 passes through the pedal supports 2 and 5 on the left and right sides, and is wound around the convex platform through the limiting effects of the limit spacer 13 and the spacer 17 to form a door recovery device. A manual tool 26 or an electric tool is connected to the recovery rod 25. The recovery rod 25 is inserted into the middle through hole of the flange 4 and connected to the polygonal interface in the middle of the recovery gear 10. The manual or electric tool is rotated to drive the recovery rod 25 to rotate. The rotation of the recovery rod 25 drives the recovery gear 10 to rotate. The power is transmitted to the large gears 15 on the two cable reel assemblies 6 meshing with the recovery gear 10, driving the entire cable reel assembly 6 to rotate around the recovery shaft 12, so that the recovery rope 1 is recovered on the convex platform, realizing the recovery of the door.

[0030] When the handle 18 of the ratchet assembly 7 is toggled to the left position, the rotating shaft 23 makes the left pawl 22 in a free state, and the right pawl 22 catches the ratchet head 20, restricting the counterclockwise movement of the ratchet head 20, thereby restricting the rotation of the pinion 8. The pinion 8 restricts the rotation of the recovery gear 10, thereby realizing the clockwise recovery of the device and counterclockwise self-locking; when the switching handle 18 is toggled to the right position, the left pawl 22 catches the ratchet head, and the right pawl 22 is in a free state, realizing the counterclockwise recovery of the device and clockwise self-locking. When the switching handle 18 is in the middle position, both the left pawl 22 and the right pawl 22 are in a free state, and the device can rotate in both clockwise and counterclockwise directions.

Claims

1. A door recovery device for rail transit, characterized in that: The invention comprises a wire pull drum assembly (6) which is symmetrically arranged on the left and right sides and is located on the same mounting surface, and a recovery gear (10) in the middle which drives the left and right wire pull drum assemblies (6) to rotate simultaneously, a pinion gear (8) is meshedly connected to one side of the recovery gear (10), and ratchets for limiting the rotation direction of the pinion gear (8) are symmetrically arranged on the left and right sides above the connecting shaft of the pinion gear (8).

2. The rail transit door recovery device according to claim 1, characterized in that: The wire pulling drum assembly (6) comprises a coaxially connected large gear (15) and a retaining ring (16), wherein the large gear (15) is meshed with the recovery gear (10), a boss for winding a recovery rope is provided on one side of the large gear (15) close to the retaining ring, and a spacer (17) for guiding the recovery rope is eccentrically provided between the large gear (15) and the retaining ring (16).

3. The rail transit door recovery device according to claim 1, characterized in that: The recovery gear (10) is provided in the middle with a polygonal hole for connecting with the recovery rod.

4. The rail transit door recovery device according to claim 1, characterized in that: The connecting shaft of the pinion (8) is connected to the ratchet head (20), the pawl is arranged above the ratchet head (20), the outer periphery of the ratchet head (20) and one end of the pawl close to the ratchet head (20) are both provided with snap-fitting grooves, and when the pawl is obliquely overlapped above the ratchet head, the ratchet head (20) is restricted from rotating in one direction.

5. The rail transit door recovery device according to claim 1, characterized in that: A rotating shaft (23) for disengaging the ratchet is provided in the middle of the ratchet, and the rotating shaft (23) is connected to a handle (18).

6. The rail transit door recovery device according to claim 5, characterized in that: The top of the rotating shaft (23) is an arc surface, and the bottom is a triangular avoidance inclined surface. When the rotating shaft (23) rotates, the ratchet pawl leaves the arc surface and overlaps with the ratchet head (20).

7. The rail transit door recovery device according to claim 6, characterized in that: The ratchet head (20), the pawl and the rotating shaft (23) are arranged in the mounting plate (19); the wheel head (20) and the rotating shaft (23) are axially connected to the mounting plate (19) for rotation; and the end of the pawl away from the ratchet head (20) is connected to the inner wall of the mounting plate (19) for rotation.

8. The rail transit door recovery device according to claim 1, characterized in that: The door recovery device also includes a mounting plate (14) and a cover plate (3), wherein the mounting plate (14) and the cover plate are connected at both ends via a support pedal to form a mounting cavity, and the left and right pull-wire drum assemblies (6), the recovery gear (10), and the pinion gear (8) are all arranged in the mounting cavity and are rotationally connected to the mounting plate (14) and / or the cover plate (3).

9. The rail transit door recovery device according to claim 8, characterized in that: The supporting pedal is provided with a waist hole for the recovery rope to pass through.

10. The rail transit door recovery device according to claim 8, characterized in that: A limiting shaft sleeve (13) for guiding the recovery rope is provided on the mounting plate (14) in the middle of the left and right wire pulling drum assemblies (6).

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