Elevator maintenance safety protection device

Abstract

The utility model discloses an elevator maintenance safety protection device which comprises a base. Mounting grooves are formed in the bottom end of the base; a threaded cylinder is rotationally connected into the mounting groove; threaded rods are in threaded connection with the two sides in the threaded cylinder; the thread rotating directions of the two threaded rods are opposite; clamping plates are rotationally connected to the ends, away from the centers of the threaded cylinders, of the threaded rods; the outer side of the threaded cylinder is sleeved with a driven bevel gear. The top of the base is rotatably connected with a rotating shaft; a driving bevel gear meshed with the driven bevel gear is arranged at the bottom end of the rotating shaft; the top of the rotating shaft is provided with a turntable; a positioning pin is inserted into the turntable; a plurality of pin holes are annularly distributed in the top end of the base; supporting frames are symmetrically arranged on two sides of the top end of the base. When the elevator car suddenly ascends due to accidents, the elevator car can be prevented from directly colliding with the top wall of the elevator shaft, so that a certain space is reserved between the elevator car and the top wall of the elevator shaft, the situation that maintenance personnel are injured due to extrusion is avoided, and the safety of the maintenance personnel is ensured.

Description

Technical Field

[0001] This utility model relates to the field of elevator maintenance equipment technology, and more specifically to an elevator maintenance safety protection device. Background Technology

[0002] An elevator is a permanent transportation device that serves several specific floors within a building, with its car moving on at least two rigid guide rails that are perpendicular to the horizontal plane or inclined at an angle of less than 15° to the vertical. A vertical elevator has one car that runs between at least two rigid guide rails that are vertical or inclined at an angle of less than 15°. The size and structure of the car facilitate passenger entry and exit or the loading and unloading of goods.

[0003] Regular maintenance is typically required for the long-term safe operation of vertical elevators. Maintenance personnel usually perform these tasks from the top of the elevator car. Therefore, if the elevator suddenly begins to rise unexpectedly during maintenance, the maintenance personnel standing on top of the elevator car are easily crushed and injured. Utility Model Content

[0004] In view of this, the present invention provides an elevator maintenance safety protection device, the purpose of which is to solve the problems existing in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] An elevator maintenance safety protection device includes: a base; a mounting groove at the bottom end of the base; a threaded cylinder rotatably connected inside the mounting groove; threaded rods threadedly connected to both sides of the inside of the threaded cylinder; the threads of the two threaded rods having opposite directions; one end of the threaded rod away from the center of the threaded cylinder extending to the outside of the base and rotatably connected to a clamping plate; a driven bevel gear sleeved on the outside of the threaded cylinder; a rotating shaft rotatably connected to the top end of the base; the bottom end of the rotating shaft extending into the mounting groove and having a driving bevel gear; the driving bevel gear meshing with the driven bevel gear; a turntable at the top end of the rotating shaft; a positioning pin inserted on the turntable; a plurality of pin holes adapted to the positioning pins distributed in a circular array at the top end of the base; the pin holes corresponding to the positioning pins; and support frames symmetrically provided on both sides of the top end of the base.

[0007] Preferably, a buffer rod is slidably provided inside the support frame; the top end of the buffer rod extends upward to the outside of the support frame and is provided with a buffer plate; a spring is sleeved on the outside of the buffer rod; one end of the spring is connected to the bottom end of the buffer plate, and the other end of the spring is connected to the top end of the support frame.

[0008] Preferably, the top of the buffer plate is provided with a first buffer pad.

[0009] Preferably, the top of the support frame is provided with a second buffer pad; the second buffer pad is sleeved on the outside of the spring.

[0010] Preferably, the turntable is provided with a handle at its top.

[0011] Preferably, the clamping plate is provided with an auxiliary positioning plate on the side near the base; the bottom end of the auxiliary positioning plate is flush with the bottom end of the base.

[0012] Preferably, the base is provided with a receiving groove that is adapted to the auxiliary positioning plate.

[0013] Compared with the prior art, this utility model achieves the following technical effects: By using components such as a base, threaded cylinder, threaded rod, clamping plate, and support frame, this utility model can prevent the elevator car from directly colliding with the top wall of the elevator shaft when the elevator car suddenly rises due to unexpected circumstances. This leaves a certain space between the elevator car and the top wall of the elevator shaft, thereby preventing maintenance personnel from being squeezed and injured, and ensuring the safety of maintenance personnel. At the same time, by fixing the turntable with positioning pins, it can prevent the clamping plate from loosening due to accidental contact with the turntable during maintenance, thus ensuring the stability of this device. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of an elevator maintenance safety protection device according to the present invention;

[0015] Figure 2 for Figure 1 A magnified view of part A in the middle;

[0016] In the diagram: 1. Base; 2. Mounting slot; 3. Threaded cylinder; 4. Threaded rod; 5. Clamping plate; 6. Driven bevel gear; 7. Shaft; 8. Driven bevel gear; 9. Turntable; 10. Positioning pin; 11. Pin hole; 12. Support frame; 13. Buffer rod; 14. Buffer plate; 15. Spring; 16. First buffer pad; 17. Second buffer pad; 18. Handle; 19. Auxiliary positioning plate; 20. Receiving groove; 21. Slide groove. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example

[0019] Reference Figure 1-2As shown, this utility model discloses an elevator maintenance safety protection device, including: a base 1; an installation groove 2 is provided at the middle of the bottom end of the base 1; a threaded cylinder 3 is rotatably connected inside the installation groove 2; threaded rods 4 are threadedly connected to both sides inside the threaded cylinder 3; the threads of the two threaded rods 4 have opposite directions; one end of the threaded rod 4 away from the center of the threaded cylinder 3 extends to the outside of the base 1 and is provided with a clamping plate 5; the threaded rod 4 is rotatably connected to the clamping plate 5; a driven bevel gear 6 is fixedly sleeved on the outside of the threaded cylinder 3; a rotating shaft 7 is rotatably connected to the top of the base 1; the bottom end of the rotating shaft 7 extends into the installation groove 2 and is provided with a driving bevel gear 8; the driving bevel gear 8 meshes with the driven bevel gear 6; a turntable 9 is provided at the top of the rotating shaft 7; a positioning pin 10 is inserted into the turntable 9; multiple pin holes 11 that are adapted to the positioning pins 10 are distributed in a circular array along the central axis of the rotating shaft 7 at the top of the base 1; the pin holes 11 are correspondingly set with the positioning pins 10; support frames 12 are symmetrically provided on both sides of the top of the base 1; before maintenance, the base 1 is placed in the elevator car. At the top of the elevator car, two clamping plates 5 are positioned on either side of the elevator car. Then, the turntable 9 is rotated. The turntable 9 drives the driving bevel gear 8 to rotate via the rotating shaft 7. The driving bevel gear 8 drives the driven bevel gear 6 to rotate, which in turn drives the threaded cylinder 3 to rotate. The threaded cylinder 3 drives two threaded rods 4 to move towards each other, and the two threaded rods 4 drive the two clamping plates 5 to move towards each other until the two clamping plates 5 contact the side wall of the elevator car, thus clamping and fixing the base 1 to the top of the elevator car. Finally, the positioning pin 10 is inserted into the corresponding pin hole 11 to fix the turntable 9, preventing the clamping plates 5 from loosening due to accidental contact with the turntable 9 during maintenance, ensuring the stability of the device. During maintenance, if the elevator car suddenly rises due to an unexpected situation, maintenance personnel can crouch down. The support frame prevents direct collision between the elevator car and the top wall of the elevator shaft, leaving a certain space between them, thus preventing injury to maintenance personnel due to compression and ensuring their safety.

[0020] The above technical solution, through the cooperation of components such as base, threaded cylinder, threaded rod, clamping plate, and support frame, can prevent the elevator car from directly colliding with the top wall of the elevator shaft when the elevator car suddenly rises due to unexpected circumstances. This leaves a certain space between the elevator car and the top wall of the elevator shaft, thereby preventing maintenance personnel from being crushed and injured, and ensuring the safety of maintenance personnel. At the same time, the positioning pins fix the turntable, which can prevent the clamping plate from loosening due to accidental contact with the turntable during maintenance, thus ensuring the stability of the device.

[0021] In this embodiment, a buffer rod 13 is slidably provided inside the support frame 12; the top end of the buffer rod 13 extends upward to the outside of the support frame 12 and is provided with a buffer plate 14; a spring 15 is sleeved on the outside of the buffer rod 13; one end of the spring 15 is fixedly connected to the bottom end of the buffer plate 14, and the other end of the spring 15 is fixedly connected to the top end of the support frame 12; in use, when the elevator car suddenly rises due to an unexpected situation, the buffer plate 14 contacts the top wall of the elevator shaft, and the spring 15 itself uses its elasticity to buffer the impact generated during the contact process, thereby further ensuring the safety of maintenance personnel.

[0022] In this embodiment, a groove 21 is provided at the top of the support frame 12; the buffer rod 13 is slidably disposed in the groove 21.

[0023] In this embodiment, a first buffer pad 16 is provided at the top of the buffer plate 14 to provide a buffering effect.

[0024] In this embodiment, a second buffer pad 17 is provided at the top of the support frame 12 to provide a buffering effect; the second buffer pad 17 is sleeved on the outside of the spring 15.

[0025] In this embodiment, a handle 18 is provided at the top of the turntable 9 to facilitate maintenance personnel to rotate the turntable 9.

[0026] In this embodiment, the clamping plate 5 is provided with an auxiliary positioning plate 19 on the side near the base 1; the bottom end of the auxiliary positioning plate 19 is flush with the bottom end of the base 1; when in use, when the clamping plate 5 contacts the side wall of the elevator car, the auxiliary positioning plate 19 contacts the top of the elevator car, so that the auxiliary positioning plate 19 can play an auxiliary fixing role for this device, thereby further improving the stability of this device.

[0027] In this embodiment, the base 1 is provided with a receiving groove 20 that is adapted to the auxiliary positioning plate 19 for accommodating the auxiliary positioning plate 19.

[0028] In this embodiment, mounting seats are symmetrically arranged inside the mounting groove 2; the threaded cylinder 3 is rotatably connected to the mounting seats through bearings.

[0029] In this embodiment, a through hole is provided on the turntable 9; the positioning pin 10 is inserted into the through hole.

[0030] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A safety protection device for elevator maintenance, characterized in that, include: A base (1); a mounting groove (2) is provided at the bottom of the base (1); a threaded cylinder (3) is rotatably connected inside the mounting groove (2); threaded rods (4) are threadedly connected to both sides inside the threaded cylinder (3); the threads of the two threaded rods (4) are opposite in direction; one end of the threaded rod (4) away from the center of the threaded cylinder (3) extends to the outside of the base (1) and is rotatably connected to a clamping plate (5); a driven bevel gear (6) is sleeved on the outside of the threaded cylinder (3); a rotating shaft (7) is rotatably connected to the top of the base (1); The bottom end of the rotating shaft (7) extends into the mounting groove (2) and is provided with a driving bevel gear (8); the driving bevel gear (8) meshes with the driven bevel gear (6); the top end of the rotating shaft (7) is provided with a turntable (9); a positioning pin (10) is inserted into the turntable (9); the top end of the base (1) is provided with a ring array of multiple pin holes (11) that are adapted to the positioning pin (10); the pin holes (11) are correspondingly provided with the positioning pin (10); the top ends of the base (1) are symmetrically provided with support frames (12).

2. The elevator maintenance safety protection device according to claim 1, characterized in that, The support frame (12) has a buffer rod (13) that slides inside; the top of the buffer rod (13) extends upward to the outside of the support frame (12) and is provided with a buffer plate (14); a spring (15) is sleeved on the outside of the buffer rod (13); one end of the spring (15) is connected to the bottom end of the buffer plate (14), and the other end of the spring (15) is connected to the top of the support frame (12).

3. The elevator maintenance safety protection device according to claim 2, characterized in that, The buffer plate (14) is provided with a first buffer pad (16) at its top.

4. The elevator maintenance safety protection device according to claim 3, characterized in that, The support frame (12) has a second buffer pad (17) at its top; the second buffer pad (17) is sleeved on the outside of the spring (15).

5. The elevator maintenance safety protection device according to claim 1, characterized in that, The turntable (9) is provided with a handle (18) at its top.

6. The elevator maintenance safety protection device according to claim 1, characterized in that, The clamping plate (5) is provided with an auxiliary positioning plate (19) on the side near the base (1); the bottom end of the auxiliary positioning plate (19) is flush with the bottom end of the base (1).

7. The elevator maintenance safety protection device according to claim 6, characterized in that, The base (1) is provided with a receiving groove (20) that is adapted to the auxiliary positioning plate (19).

Images