Elevator door limiting device for elevator maintenance

Abstract

The utility model discloses an elevator door limiting device for elevator maintenance relates to elevator technical field. The utility model discloses a support platform is provided with limiting structure and stabilizing mechanism on the support platform. The utility model discloses through setting limiting structure, and the two articulated blocks can be far away from each other or each other close by rotating two -way screw rod, when two articulated blocks each other close, articulated angle between articulated frame no.

Description

Technical Field

[0001] This utility model belongs to the field of elevator technology, and in particular relates to an elevator door limit device for elevator maintenance. Background Technology

[0002] An elevator is a vertical lifting machine powered by an electric motor, equipped with a box-shaped cabin, used for transporting people or goods in multi-story buildings. There are also escalator-type elevators, where steps are mounted on a continuously running track; these are commonly known as moving walkways or automatic stairs, and are fixed lifting devices serving designated floors. A vertical elevator has a car that runs between at least two vertical rigid guide rails. The size and structure of the car facilitate passenger entry and exit or loading and unloading of goods. Conventionally, regardless of its drive method, elevator is used as a general term for vertical transportation tools within buildings. Hydraulic elevators appeared in the mid-19th century and are still used in low-rise buildings today. In the 1980s, the drive mechanism was further improved, such as the electric motor driving a winding drum through a worm gear transmission and the use of counterweights. At the end of the 19th century, friction wheel transmission was adopted, greatly increasing the elevator's lifting height.

[0003] During elevator maintenance, existing elevator door limiting methods present numerous challenges. Traditional limiting devices often have complex structures and are difficult to adjust, resulting in wasted time and low efficiency in actual use. Furthermore, traditional devices struggle to effectively prevent elevator doors from closing without damaging them, easily causing damage due to improper limiting. Additionally, their safety is unsatisfactory, failing to adequately guarantee the safety of maintenance personnel. Summary of the Invention

[0004] The purpose of this utility model is to provide an elevator door limit device for elevator maintenance, which solves the problems of existing elevator door limit methods. Previous limit devices often have a complex structure and are not easy to adjust, which leads to wasted time and low efficiency in actual use.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is an elevator door limiting device for elevator maintenance, including a support platform, on which a limiting structure and a stabilizing mechanism are provided;

[0007] The limiting structure includes a bidirectional threaded rod that rotatably passes through the support platform. The outer wall of the bidirectional threaded rod is threaded with two hinge blocks. The outer walls of the two hinge blocks are hinged with a hinge frame one and a hinge frame two. A baffle is hinged to the opposite side of the two hinge frames one and the opposite side of the two hinge frames two. The two hinge frames one are slidably connected to the inner walls of the two hinge frames two respectively.

[0008] Furthermore, a pad is fixedly connected to each of the two baffles on the opposite sides. Both pads are made of rubber and are respectively attached to the closing surface of the elevator door.

[0009] Furthermore, two slide rods are fixedly connected to one side of each of the two baffles that are close to each other, and all four slide rods slide through the support platform.

[0010] Furthermore, each of the four slide rods has a connecting block fixedly connected to the side away from the baffle, and each of the four slide rods has a spring wound around its outer wall.

[0011] Furthermore, one end of the spring is fixedly connected to the connecting block, and the other end of the spring is fixedly connected to the support platform.

[0012] Furthermore, the stabilizing mechanism includes a handle turntable fixedly connected to the left end of the bidirectional threaded rod, and four slide rods 2 passing through the left side of the support platform. The four slide rods 2 are evenly distributed in a circular row outside the bidirectional threaded rod, and a limiting disc is fixedly connected to the left end of the four slide rods 2.

[0013] Furthermore, the outer walls of the four slide rods are all wound with springs, one end of which is fixedly connected to the limiting disc, and the other end of which is fixedly connected to the left side of the support platform.

[0014] Furthermore, the left side of the limiting disc is fitted with the right side of the handle turntable, and the mating surfaces of the limiting disc and the handle turntable are each provided with a number of matching ratchet teeth.

[0015] This utility model has the following beneficial effects:

[0016] By setting a limiting structure, the four sliding rods cooperate with each other, allowing the two pads to move horizontally towards or away from each other. Rotating the bidirectional threaded rod allows the two hinge blocks to move away from or towards each other. When the two hinge blocks approach each other, the hinge angle between hinge frame one and hinge frame two increases, causing the two baffles to move away from each other. When the support platform is placed between the elevator doors, the two baffles moving away from each other can hold the elevator doors in place and limit their movement. The two pads cooperate with each other to prevent the elevator doors from closing during maintenance and causing danger to maintenance personnel without damaging the elevator doors. Furthermore, the two springs cooperate with the connecting block, allowing the two baffles to rebound when retracted. Compared with existing limiting devices, this structure has the advantages of simple structure, convenient adjustment, and high safety in use.

[0017] By incorporating a stabilizing mechanism, before rotating the handle dial to drive the bidirectional threaded rod, the limiting disc can be moved to the right to move the ratchet teeth on the limiting disc away from the handle dial. At this time, multiple springs are compressed on the outer wall of the slide rod. After rotating the bidirectional threaded rod to move the two baffles away from each other and press against the elevator door, the limiting disc can be released, so that the ratchet teeth on the limiting disc engage with the ratchet teeth on the handle dial, thereby preventing the bidirectional threaded rod from slipping and rotating back, and further improving the safety of the overall device.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of this utility model from below;

[0022] Figure 3 This is a schematic diagram of the limiting structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the hinge frame of this utility model;

[0024] Figure 5 for Figure 1 A magnified structural diagram of point A in the middle.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Support platform; 2. Limiting structure; 3. Stabilizing mechanism; 21. Two-way threaded rod; 22. Hinge block; 23. Hinge frame one; 24. Hinge frame two; 25. Baffle; 26. Pad; 27. Slide rod one; 28. Connecting block; 29. ​​Spring one; 31. Handle turntable; 32. Slide rod two; 33. Limiting disc; 34. Spring two; 35. Ratchet tooth. Detailed Implementation

[0027] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-5 As shown, this utility model is an elevator door limiting device for elevator maintenance, including a support platform 1, on which a limiting structure 2 and a stabilizing mechanism 3 are provided;

[0029] The limiting structure 2 includes a bidirectional threaded rod 21 that rotatably passes through the support platform 1. Two hinge blocks 22 are threadedly connected to the outer wall of the bidirectional threaded rod 21. Each hinge block 22 has a hinge frame 1 23 and a hinge frame 24 hinged to its outer wall. A baffle 25 is hinged to the opposite side of each hinge frame 1 23 and the opposite side of each hinge frame 24. The two hinge frames 1 23 are slidably connected to the inner walls of the two hinge frames 24. A pad 26 is fixedly connected to the opposite side of each baffle 25. Both pads 26 are made of rubber and are in contact with the closing surface of the elevator door. Two slide rods 1 27 are fixedly connected to the adjacent side of each baffle 25. All four slide rods 1 27 slide through the support platform 1. A connecting block 28 is fixedly connected to the opposite side of each slide rod 1. Springs are wound around the outer walls of each slide rod 1 27. One end of spring 29 is fixedly connected to connecting block 28, and the other end of spring 29 is fixedly connected to support platform 1. By setting a limit structure 2, rotating the bidirectional threaded rod 21 allows the two hinge blocks 22 to move away from or towards each other. When the two hinge blocks 22 move towards each other, the hinge angle between hinge frame 23 and hinge frame 24 increases, causing the two baffles 25 to move away from each other. When the support platform 1 is placed between the elevator doors, the two baffles 25 moving away from each other can hold the elevator doors in place and limit their movement. The two pads 26 cooperate with each other to prevent the elevator doors from closing during maintenance and causing danger to maintenance personnel without damaging the elevator doors. In addition, the two springs 29 and connecting block 28 cooperate with each other so that the two baffles 25 can rebound when retracted. Compared with existing limit devices, this structure has the advantages of simple structure, convenient adjustment, and high safety in use.

[0030] The stabilizing mechanism 3 includes a handle turntable 31 fixedly connected to the left end of the bidirectional threaded rod 21. Four sliding rods 32 extend through the left side of the support platform 1, evenly distributed in a circular arrangement outside the bidirectional threaded rod 21. A limiting disc 33 is fixedly connected to the left end of each sliding rod 32. Springs 34 are wound around the outer walls of each sliding rod 32. One end of each spring 34 is fixedly connected to the limiting disc 33, and the other end is fixedly connected to the left side of the support platform 1. The left side of the limiting disc 33 is in contact with the right side of the handle turntable 31. Several corresponding abutments are provided on the contact surfaces of the limiting disc 33 and the handle turntable 31. The ratchet teeth 35, equipped with a stabilizing mechanism 3, can be moved to the right by the limiting disc 33 before the double-threaded rod 21 is rotated by rotating the handle disc 31. This causes the ratchet teeth 35 on the limiting disc 33 to move away from the handle disc 31. At this time, multiple springs 34 are compressed on the outer wall of the slide rod 32. After rotating the double-threaded rod 21 and causing the two baffles 25 to move away from each other and press against the elevator door, the limiting disc 33 can be released, so that the ratchet teeth 35 on the limiting disc 33 are engaged with the ratchet teeth 35 on the handle disc 31. This prevents the double-threaded rod 21 from slipping and rotating back, thereby further improving the safety of the overall device.

[0031] A specific application of this embodiment is as follows: By setting a limiting structure 2, four sliding rods 27 cooperate with each other, so that the two pads 26 can only move horizontally closer or further apart. Rotating the bidirectional threaded rod 21 makes the two hinge blocks 22 move further apart or closer together. When the two hinge blocks 22 move closer together, the hinge angle between hinge frame 23 and hinge frame 24 increases, so that the two baffles 25 move further apart. When the support platform 1 is placed between the elevator doors, the two baffles 25 moving apart can hold the elevator doors in place and limit the elevator doors. The two pads 26 cooperate with each other to prevent the elevator doors from closing during maintenance and causing danger to maintenance personnel without damaging the elevator doors. In addition, the two springs 29 cooperate with the connecting block 28 so that the two baffles 25 can rebound when they are retracted. Compared with the existing limiting devices, this structure can achieve the advantages of simple structure, convenient adjustment and high safety in use.

[0032] By providing a stabilizing mechanism 3, before rotating the bidirectional threaded rod 21 by rotating the handle turntable 31, the limiting disc 33 can be moved to the right so that the ratchet teeth 35 on the limiting disc 33 are away from the handle turntable 31. At this time, multiple springs 34 are squeezed on the outer wall of the slide rod 32. After rotating the bidirectional threaded rod 21 to drive the two baffles 25 away from each other and press against the elevator door, the limiting disc 33 can be released so that the ratchet teeth 35 on the limiting disc 33 are engaged with the ratchet teeth 35 on the handle turntable 31, thereby preventing the bidirectional threaded rod 21 from slipping and rotating back, and further improving the safety of the overall device.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An elevator door limit device for elevator maintenance, characterized in that: It includes a support platform (1), on which a limit structure (2) and a stabilizing mechanism (3) are provided; The limiting structure (2) includes a bidirectional threaded rod (21) that rotatably passes through the support platform (1). The outer wall of the bidirectional threaded rod (21) is threaded with two hinge blocks (22). The outer walls of the two hinge blocks (22) are hinged with a first hinge frame (23) and a second hinge frame (24). The two hinge frames (23) and the two hinge frames (24) are hinged with baffles (25) on opposite sides. The two hinge frames (23) are slidably connected to the inner walls of the two hinge frames (24).

2. The elevator door limiting device for elevator maintenance according to claim 1, characterized in that: Each of the two baffles (25) has a pad (26) fixedly connected to the side of each baffle that is far apart from each other. Both pads (26) are made of rubber and are respectively attached to the closing surface of the elevator door.

3. The elevator door limiting device for elevator maintenance according to claim 2, characterized in that: Two slide rods (27) are fixedly connected to each other on one side of the two baffles (25), and all four slide rods (27) slide through the support platform (1).

4. The elevator door limiting device for elevator maintenance according to claim 3, characterized in that: Each of the four slide rods (27) has a connecting block (28) fixedly connected to the side away from the baffle (25), and each of the four slide rods (27) has a spring (29) wrapped around its outer wall.

5. The elevator door limiting device for elevator maintenance according to claim 4, characterized in that: One end of the spring (29) is fixedly connected to the connecting block (28), and the other end of the spring (29) is fixedly connected to the support platform (1).

6. The elevator door limiting device for elevator maintenance according to claim 5, characterized in that: The stabilizing mechanism (3) includes a handle turntable (31) fixedly connected to the left end of the bidirectional threaded rod (21), and four slide rods (32) passing through the left side of the support platform (1). The four slide rods (32) are evenly distributed in a circular array outside the bidirectional threaded rod (21), and a limiting disc (33) is fixedly connected to the left end of the four slide rods (32).

7. The elevator door limiting device for elevator maintenance according to claim 6, characterized in that: The outer walls of the four slide rods (32) are all wrapped with springs (34). One end of the springs (34) is fixedly connected to the limiting disc (33), and the other end of the springs (34) is fixedly connected to the left side of the support platform (1).

8. The elevator door limiting device for elevator maintenance according to claim 7, characterized in that: The left side of the limiting disc (33) is in contact with the right side of the handle turntable (31), and the contact surfaces of the limiting disc (33) and the handle turntable (31) are provided with a number of matching ratchet teeth (35).

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