An elevator car top guardrail device

Abstract

This application discloses an elevator car top guardrail device, belonging to the field of elevator car top guardrail technology. The car top guardrail device includes a base frame and two sets of adjustment mechanisms symmetrically installed on the base frame. A top beam is fixedly installed at the center of the base frame. The adjustment mechanism includes vertical rods relatively distributed on one side of the base frame. A movable shaft is rotatably connected to the inner side of the vertical rod. A first horizontal rod is provided on the vertical rod, and an adjustment seat is fixedly installed at the lower end of the first horizontal rod. The first horizontal rod is fixed to the movable shaft through the adjustment seat, and the movable shaft can rotate on the vertical rod. This allows the first horizontal rod 32, the movable component, and the second horizontal rod 33 in the entire upper structure to perform pitching motion around the movable shaft as a whole. When the elevator is running, the height of the guardrail can be lowered, significantly reducing the space it occupies in the vertical direction and fundamentally avoiding the risk of collision with the top of the shaft or internal components.

Description

Technical Field

[0001] This application relates to the field of elevator car top guardrail technology, specifically an elevator car top guardrail device. Background Technology

[0002] The elevator car top guardrail is a barrier installed on the top of the elevator car and is an extremely important safety protection device. Its main function is to prevent personnel working on the car top from accidentally falling into the elevator shaft, providing safety for them.

[0003] According to the safety regulations for elevator manufacturing and installation, elevator car tops must be equipped with protective railings with a protection height of 0.7m-1.1m to ensure the personal safety of workers on the car top during operations. However, due to the limited space in the elevator shaft, the existing car top protective railings, when installed on the elevator car top to meet the height standard, would occupy too much elevator shaft space, creating a safety hazard of the elevator hitting the top of the shaft during operation.

[0004] Therefore, this application provides an elevator car top guardrail device to solve the above problems. Utility Model Content

[0005] This application provides an elevator car top guardrail device, which aims to solve the problem mentioned in the background art that the existing car top guardrails cannot meet the space requirements of the elevator shaft.

[0006] To achieve the above objectives, this application provides the following technical solution: an elevator car top guardrail device, comprising a base frame and two sets of adjustment mechanisms symmetrically installed on the base frame, wherein a top beam is fixedly installed at the center of the base frame;

[0007] The adjustment mechanism includes vertical rods distributed on one side of the base frame, with a movable shaft rotatably connected to the inner side of each vertical rod. A first horizontal rod is provided on the vertical rod, and an adjustment seat is fixedly installed at the lower end of the first horizontal rod. The adjustment seat is fixedly sleeved with the movable shaft. A movable component is provided at the upper end of the first horizontal rod, and a second horizontal rod is provided at the upper end of the movable component. When it is necessary to perform work on the car top, the guardrail can be quickly adjusted to the legally required safe height of 0.7m-1.1m to ensure the safety of the workers.

[0008] Preferably, the movable component includes a movable cylinder symmetrically mounted on the first crossbar, a movable rod movably inserted into the movable cylinder, the upper end of the movable rod being fixedly connected to the lower end of the second crossbar, and a positioning screw provided on the movable cylinder. The movable cylinder and the movable rod cooperate to achieve secondary adjustment of the guardrail height, improving the overall safety, and at the same time, can strengthen the retraction distance to prevent the second crossbar after rotation adjustment from being too long and blocking the safety window on the top of the bridge box.

[0009] Preferably, a support base is fixedly installed on the inner side of the vertical rod, and a worm gear assembly is fixedly installed on the upper end of the support base. One end of the movable shaft is fixedly connected to the worm gear shaft inside the worm gear assembly.

[0010] Preferably, a servo motor is mounted on the housing of the worm gear assembly, and one end of the worm of the worm gear assembly is fixedly connected to the output end of the servo motor.

[0011] Preferably, each of the vertical bars is fixedly equipped with a support arm, and the support arm is provided with a buffer pad for protecting the first horizontal bar.

[0012] In this car top guardrail device, the first crossbar is fixed to the movable shaft via an adjusting seat, and the movable shaft can rotate on the vertical bar. This allows the first crossbar 32, the movable component, and the second crossbar 33 in the entire upper structure to move in a pitching motion around the movable shaft as a whole. When the elevator is running, the height of the guardrail can be lowered, significantly reducing the space it occupies in the vertical direction and fundamentally avoiding the risk of collision with the top of the shaft or internal components.

[0013] This car roof guardrail device uses a movable cylinder and a movable rod to achieve secondary adjustment of the guardrail height, improving overall safety. At the same time, it can strengthen the retraction distance and prevent the second horizontal bar after rotation and adjustment from blocking the safety window on the top of the bridge box due to being too long. Attached Figure Description

[0014] Figure 1 A schematic diagram of the structure of an elevator car top guardrail device;

[0015] Figure 2 This is a schematic diagram of the structure after the first horizontal bar is flipped and stored.

[0016] Figure 3 This is a schematic diagram of the second crossbar.

[0017] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle.

[0018] 1. Base frame; 2. Top beam; 3. Adjustment mechanism; 31. Vertical rod; 311. Movable shaft; 32. First horizontal rod; 321. Adjustment seat; 33. Second horizontal rod; 331. Movable cylinder; 332. Movable rod; 333. Positioning screw; 34. Support arm; 35. Worm gear assembly; 36. Support seat; 37. Servo motor. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0020] This embodiment provides an elevator car top guardrail device, such as... Figure 1-4 As shown, the car roof guardrail device includes a base frame 1 and two sets of adjustment mechanisms 3 symmetrically installed on the base frame 1. A top beam 2 is fixedly installed at the center of the base frame 1.

[0021] The adjustment mechanism 3 includes vertical rods 31 that are relatively distributed on one side of the base frame 1. A movable shaft 311 is rotatably connected to the inner side of the vertical rods 31. A first horizontal rod 32 is provided on the vertical rods 31. An adjustment seat 321 is fixedly installed at the lower end of the first horizontal rod 32. The adjustment seat 321 is fixedly sleeved with the movable shaft 311. A movable component is provided at the upper end of the first horizontal rod 32. A second horizontal rod 33 is provided at the upper end of the movable component.

[0022] Specifically, the first crossbar 32 is fixed to the movable shaft 311 via the adjusting seat 321, and the movable shaft 311 can rotate on the vertical bar 31. This allows the first crossbar 32, the movable component, and the second crossbar 33 in the entire upper structure to move in a pitching motion around the movable shaft 311 as a whole, thereby achieving a change in height. When the elevator is running, the height of the guardrail can be lowered, significantly reducing the space it occupies in the vertical direction and fundamentally avoiding the risk of collision with the top of the shaft or internal components.

[0023] The movable component includes a movable cylinder 331 symmetrically mounted on the first crossbar 32, a movable rod 332 movably inserted into the movable cylinder 331, the upper end of the movable rod 332 being fixedly connected to the lower end of the second crossbar 33, and a positioning screw 333 being provided on the movable cylinder 331.

[0024] More specifically, the movable component consists of a movable cylinder 331 and a movable rod 332 forming a telescopic sleeve mechanism. When the upper structure rotates around the movable shaft 311, the movable component adapts to the change in distance between the second crossbar 33 and the first crossbar 32 by its own extension and retraction. By tightening the positioning screw 333 to press the movable rod 332, the movable component can be rigidly locked to prevent accidental retraction during use.

[0025] A support base 36 is fixedly installed on the inner side of the vertical rod 31. A worm gear assembly 35 is fixedly installed on the upper end of the support base 36. One end of the movable shaft 311 is fixedly connected to the worm gear shaft inside the worm gear assembly 35. A servo motor 37 is installed on the housing of the worm gear assembly 35. One end of the worm of the worm gear assembly 35 is fixedly connected to the output end of the servo motor 37.

[0026] It should be noted that the servo motor 37, as the power source, drives the worm in the worm gear assembly 35 to rotate. The worm then drives the worm wheel, which is fixedly connected to the movable shaft 311, to rotate, thereby ultimately driving the entire upper structure to perform pitching motion. The worm gear mechanism has a reverse self-locking characteristic, meaning that the worm can drive the worm wheel, but the worm wheel cannot drive the worm in the reverse direction. This means that once the motor stops, the height of the guardrail is firmly locked, and it will not fall even under external impact, providing a very high level of safety for workers.

[0027] Each vertical bar 31 is fixedly equipped with a support arm 34, and the support arm 34 is provided with a buffer pad for protecting the first horizontal bar 32.

[0028] It is worth mentioning that the support arm 34 is fixed to the vertical bar 31 to form a stable support structure, and the buffer pad on it comes into contact with the first horizontal bar 32 when it rotates down to the storage position.

[0029] In use, the first crossbar 32 is fixed to the movable shaft 311 via the adjusting seat 321, and the movable shaft 311 can rotate on the vertical bar 31. This allows the first crossbar 32, the movable component, and the second crossbar 33 in the entire upper structure to move in a pitching motion around the movable shaft 311 as a whole. When the elevator is running, the height of the guardrail can be lowered, significantly reducing the space it occupies in the vertical direction and fundamentally avoiding the risk of collision with the top of the shaft or internal components.

[0030] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. An elevator car top guardrail device, comprising a base frame (1) and two sets of adjustment mechanisms (3) symmetrically installed on the base frame (1), wherein a top beam (2) is fixedly installed at the center of the base frame (1); Its features are: The adjustment mechanism (3) includes vertical rods (31) distributed on one side of the base frame (1), with a movable shaft (311) rotatably connected to the inner side of the vertical rods (31), a first horizontal rod (32) provided on the vertical rods (31), an adjustment seat (321) fixedly installed at the lower end of the first horizontal rod (32), the adjustment seat (321) being fixedly sleeved with the movable shaft (311), a movable component provided at the upper end of the first horizontal rod (32), and a second horizontal rod (33) provided at the upper end of the movable component.

2. The elevator car top guardrail device according to claim 1, characterized in that: The movable component includes a movable cylinder (331) symmetrically mounted on the first crossbar (32), a movable rod (332) is movably inserted into the movable cylinder (331), the upper end of the movable rod (332) is fixedly connected to the lower end of the second crossbar (33), and a positioning screw (333) is provided on the movable cylinder (331).

3. The elevator car top guardrail device according to claim 2, characterized in that: A support base (36) is fixedly installed on the inner side of the vertical rod (31), and a worm gear assembly (35) is fixedly installed on the upper end of the support base (36). One end of the movable shaft (311) is fixedly connected to the worm gear shaft inside the worm gear assembly (35).

4. The elevator car top guardrail device according to claim 3, characterized in that: A servo motor (37) is mounted on the housing of the worm gear assembly (35), and one end of the worm of the worm gear assembly (35) is fixedly connected to the output end of the servo motor (37).

5. The elevator car top guardrail device according to claim 4, characterized in that: Each of the vertical bars (31) is fixedly equipped with a support arm (34), and the support arm (34) is provided with a buffer pad for protecting the first horizontal bar (32).

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