Safety protection device for anti-explosion elevator

Abstract

The utility model relates to the technical field of elevator safety protection, in particular to a safety protection device for an anti-explosion elevator. Compared with the prior art, the anti-falling device has the advantages that when an elevator car falls quickly, the air catching cover can be pushed upwards through pushing of air flow in an elevator shaft, so that the four rack plates are pushed upwards, the driven gears are pushed to rotate, the connecting arms and the hanging columns are turned over outwards, the hanging columns are turned over into the clamping openings, and the anti-falling effect is achieved. In this way, an elevator car can be hooked, falling can be prevented, automatic braking of the elevator car is achieved, impact force borne by a hanging cable can be greatly reduced, upward thrust of airflow is gathered through an air catching cover, four rack plates are pushed upwards, then driven gears are pushed to rotate, connecting arms and hanging columns are turned over outwards, the hanging columns are turned over into clamping openings, and therefore the hanging cable can be automatically braked. In this way, the elevator car can be hooked, falling can be prevented, automatic braking can be achieved, a pure mechanical structure is adopted, faults are not prone to occurring, and safety and reliability are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to elevator safety protection technical field, especially a safety protection device for explosion -proof elevator. BACKGROUND

[0002] At present, elevators have spread in the place of people's life, such as community, shopping mall, office building, station and the place closely related to people's life. Because the elevator brings the convenience to people's life, so its use frequency is higher, and the elevator falling accident is more. However, the existing elevator car is accelerated in falling under the gravity of the elevator car itself, so it is necessary to install the protection device, and the current elevator anti-falling measure needs to rely on the locking of the top sliding emergency brake structure, but the kinetic energy of the elevator car is very large, the sling is stopped although being braked, but the huge impact force will cause the sling to be pulled, and damage is easily caused, so a protection device for directly stopping the car between the car body and the elevator shaft is needed. SUMMARY

[0003] The utility model aims at overcoming the shortcomings of prior art, provide a safety protection device for explosion -proof elevator, effectively solve the deficiency of prior art.

[0004] In order to realize the above-mentioned purpose, the embodiment of the utility model provides a safety protection device for explosion -proof elevator, including elevator shaft, the middle part of the two sides of the inner wall of elevator shaft is fixedly connected with two locking pieces, the adjacent two locking pieces are provided with guide slot body, the side of locking piece is provided with a plurality of downward inclined clamping port, the inside of elevator shaft is provided with elevator car, the middle part of the two sides of the outer wall of elevator car is fixedly connected with positioning plate, the adjacent two positioning plates are respectively on the outside of two locking pieces on the same side, the side of adjacent two positioning plates is rotatably connected with the shaft, the middle part of the shaft is fixedly connected with connecting arm, the top of connecting arm is fixedly connected with the hanging column on both sides, the center of both ends of the shaft is fixedly connected with driven gear, the middle part of the bottom surface of elevator car is fixedly connected with guide column on both sides, the outer wall of two guide columns is slidably connected with sliding plate, the bottom of sliding plate is fixedly connected with the air scoop, the bottom of guide column is fixedly connected with the head, the top surface of both sides of sliding plate is fixedly connected with rack plate on both sides, four rack plates are respectively meshed with a plurality of driven gears, the position of hanging column corresponds with the position of a plurality of clamping ports, the diameter of hanging column is adapted to the width of the inner wall of clamping port.

[0005] Preferably, according to any one of the above schemes, the rotating shaft is located between the locking member and the outer wall of the elevator car, away from the elevator shaft, and the connecting arm is located corresponding to the guide groove, and the width of the connecting arm is adapted to the width of the inner wall of the guide groove.

[0006] The technical effect achieved by the above scheme is that the connecting arm can extend into the interior of the guide groove, so that the stress of the hanging column and the connecting arm is distributed along a straight line, thereby improving the stability of braking.

[0007] Preferably, according to any one of the above schemes, the length of the connecting arm is greater than the distance from the rotating shaft to the side of the locking member away from the elevator shaft, and the length of the hanging column is adapted to the distance between the outer sides of two adjacent locking members.

[0008] The technical effect achieved by the above scheme is that the hanging column can be rotated to the position of the bayonet after the connecting arm is reversed.

[0009] Preferably, according to any one of the above schemes, the outer wall of each of the two guide columns is sleeved with a reset spring, the length of the reset spring after reset is adapted to the length of the guide column, and the two guide columns are symmetrically arranged about the center line of the elevator car.

[0010] The technical effect achieved by the above scheme is that the reset spring can push the sliding plate downward when pulling the elevator car upward, so that the connecting arm is turned inward, thereby facilitating automatic unlocking and reset after repair.

[0011] Preferably, according to any one of the above schemes, the bottom of the air scooping cover is a horn-shaped structure, and the size of the air scooping cover is adapted to the size of the bottom surface of the elevator car.

[0012] The technical effect achieved by the above scheme is that the air scooping range of the air scooping cover can be maximized, thereby providing sufficient thrust.

[0013] The utility model has the following advantages:

[0014] 1. The safety protection device for the explosion-proof elevator can push the air scooping cover upward when the elevator car rapidly descends, so that the four rack plates are pushed upward, thereby driving the driven gear to rotate and making the connecting arm and the hanging column turn outward, so that the hanging column is turned into the bayonet, thereby hooking the elevator car and preventing it from descending, achieving automatic braking of the elevator car, and greatly reducing the impact force on the elevator car.

[0015] 2. The safety protection device for this explosion-proof elevator uses the upward thrust of the airflow gathered by the vent to push the four rack plates upward, which in turn drives the driven gear to rotate, causing the connecting arm and the hook column to flip outward. This allows the hook column to flip into the latch, thus hooking the elevator car to prevent it from falling. It can achieve automatic braking, and its purely mechanical structure is not prone to failure, making it safe and reliable. Attached Figure Description

[0016] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0017] Fig. 2 This is a front view structural diagram of the present utility model;

[0018] Fig. 3 This is a schematic diagram of the internal structure of this utility model.

[0019] In the diagram: 1-Elevator shaft, 2-Elevator car, 3-Positioning plate, 4-Locking component, 5-Guide groove, 6-Band, 7-Rotating shaft, 8-Connecting arm, 9-Hanging column, 10-Driven gear, 11-Rack plate, 12-Sliding plate, 13-Wind shield, 14-Guide column, 15-Reset spring, 16-Stop. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0021] like Figs. 1 to 3 As shown, a safety protection device for explosion-proof elevators includes an elevator shaft 1. Two locking members 4 are fixedly connected to the middle of both sides of the inner wall of the elevator shaft 1. A guide groove 5 is provided between two adjacent locking members 4. Several downwardly inclined slots 6 are opened on one side of each locking member 4. An elevator car 2 is installed inside the elevator shaft 1. Positioning plates 3 are fixedly connected to both sides of the middle of both sides of the outer wall of the elevator car 2. Two adjacent positioning plates 3 are respectively located outside the two locking members 4 on the same side. A rotating shaft 7 is rotatably connected to one side of each adjacent positioning plate 3. A connecting arm 8 is fixedly connected to the middle of the rotating shaft 7. The top of the connecting arm 8... Hanging posts 9 are fixedly connected to both sides. Driven gears 10 are fixedly connected to the center of both ends of the rotating shaft 7. Guide posts 14 are fixedly connected to both sides of the bottom center of the elevator car 2. A sliding plate 12 is slidably connected to the outer wall of the two guide posts 14. A vent 13 is fixedly connected to the bottom of the sliding plate 12. A stop 16 is fixedly connected to the bottom of the guide posts 14. A rack plate 11 is fixedly connected to both sides of the top edge of the sliding plate 12. The four rack plates 11 are respectively meshed with several driven gears 10. The position of the hanging post 9 corresponds to the position of several latches 6. The diameter of the hanging post 9 is adapted to the width of the inner wall of the latch 6.

[0022] As an optional technical scheme of the utility model, the pivot 7 and the connecting arm 8 and the hanging column 9 are all between the locking piece 4 far from the elevator shaft 1 side and the outer wall of the elevator car 2, the position of the connecting arm 8 corresponds to the position of the guide groove body 5, the width of the connecting arm 8 is adapted to the width of the inner wall of the guide groove body 5, so that the connecting arm 8 can extend into the inside of the guide groove body 5, the stress of the hanging column 9 and the connecting arm 8 is distributed along a straight line, and the stability of braking is improved.

[0023] As an optional technical scheme of the utility model, the length of the connecting arm 8 is greater than the distance from the pivot 7 to the locking piece 4 far from the elevator shaft 1 side, and the length of the hanging column 9 is adapted to the distance between the outer sides of the two adjacent locking pieces 4, so that the hanging column 9 can rotate to the position of the bayonet 6 after the connecting arm 8 is reversed.

[0024] As an optional technical scheme of the utility model, the outer wall of the two guide columns 14 is sleeved with a reset spring 15, the length of the reset spring 15 after reset is adapted to the length of the guide column 14, and the two guide columns 14 are symmetrically arranged with the center line of the elevator car 2 as the center, so that the sliding plate 12 can be pushed down when pulling the elevator car 2 upward, the connecting arm 8 is turned inward, and the automatic unlocking reset after repair is facilitated.

[0025] As an optional technical scheme of the utility model, the bottom of the scoop cover 13 is a horn-shaped structure, and the size of the scoop cover 13 is adapted to the size of the bottom surface of the elevator car 2, so that the scoop range of the scoop cover 13 can be maximized, and sufficient thrust can be provided.

[0026] The safety protection device for the explosion-proof elevator needs the following steps when in use:

[0027] 1) When the elevator car 2 rapidly descends, the air flow inside the elevator shaft 1 can push the scoop cover 13 upward;

[0028] 2) The four rack plates 11 are pushed upward, and the driven gear 10 is rotated to make the connecting arm 8 and the hanging column 9 turn outward;

[0029] 3) The hanging column 9 is turned into the bayonet 6, so that the elevator car 2 can be hooked to prevent falling, and the elevator car 2 is automatically braked.

[0030] In summary, when the elevator car 2 falls rapidly, the air flow inside the elevator shaft 1 can push the air scoop 13 upward, thereby pushing the four rack plates 11 upward, further pushing the driven gear 10 to rotate, making the connecting arm 8 and the hanging column 9 turn outward, thereby making the hanging column 9 turn into the notch 6, so as to hook the elevator car 2 and prevent it from falling, achieving automatic braking of the elevator car 2, which can greatly reduce the impact force on the elevator car 2. The upward thrust of the air flow gathered by the air scoop 13 can push the four rack plates 11 upward, further pushing the driven gear 10 to rotate, making the connecting arm 8 and the hanging column 9 turn outward, thereby making the hanging column 9 turn into the notch 6, so as to hook the elevator car 2 and prevent it from falling, which can achieve automatic braking, and the pure mechanical structure is not prone to failure, safe and reliable.

[0031] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A safety shield for an explosion-proof elevator, characterized in that The utility model provides an elevator shaft (1), the middle part of both sides of the inner wall of elevator shaft (1) is fixedly connected with two locking pieces (4), is provided with guide groove body (5) between two adjacent locking pieces (4), a plurality of downward inclined bayonet (6) are seted up to one side of locking piece (4), the inside of elevator shaft (1) is provided with elevator car (2), the middle part of both sides of the outer wall of elevator car (2) is fixedly connected with positioning plate (3), two adjacent positioning plates (3) are respectively on the outside of two locking pieces (4) of the same side, one side of two adjacent positioning plates (3) is rotatably connected with pivot (7), the middle part of pivot (7) is fixedly connected with connecting arm (8), the top of connecting arm (8) is fixedly connected with the both sides of hanging column (9), the center of both ends of pivot (7) is fixedly connected with driven gear (10), the both sides of the middle part of the bottom of elevator car (2) are fixedly connected with guide column (14), the outer wall of two guide columns (14) is slidably connected with sliding plate (12), the bottom of sliding plate (12) is fixedly connected with the air scooping cover (13), the bottom of guide column (14) is fixedly connected with the head (16), the both sides of the top surface both sides edges of sliding plate (12) are fixedly connected with rack plate (11), four rack plates (11) are respectively meshed with a plurality of driven gear (10), the position of hanging column (9) corresponds with the position of a plurality of bayonet (6), the diameter of hanging column (9) is adapted to the width of bayonet (6) inner wall.

2. A safety shield for an explosion-protected elevator according to claim 1, characterized in that The pivot (7) and connecting arm (8) and hanging column (9) are located between the side of locking piece (4) away from elevator shaft (1) and the outer wall of elevator car (2), the position of connecting arm (8) corresponds with the position of guide groove body (5), the width of connecting arm (8) is adapted to the width of guide groove body (5) inner wall.

3. A safety shield for an explosion-protected elevator according to claim 2, characterized in that The length of connecting arm (8) is greater than the distance from pivot (7) to the side of locking piece (4) away from elevator shaft (1), the length of hanging column (9) corresponds with the distance between the outer sides of two adjacent locking pieces (4).

4. A safety shield for an explosion-protected elevator according to claim 3, characterized in that The outer wall of two guide columns (14) is sleeved with reset spring (15), the length of reset spring (15) after reset is adapted to the length of guide column (14), two guide columns (14) are centrally symmetrically arranged with the center line of elevator car (2) as the center.

5. A safety shield for an explosion-protected elevator according to claim 4, characterized in that The bottom of air scooping cover (13) is a horn structure, the size of air scooping cover (13) is adapted to the size of the bottom of elevator car (2).

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