A protective fence for elevator maintenance

Abstract

The utility model relates to the technical field of guardrails, and discloses a guardrail for elevator maintenance, comprising a main guardrail plate and a secondary guardrail plate, wherein the main guardrail plate and the secondary guardrail plate are connected by a hinge, and the secondary guardrail plate is connected to a clamping plate by a hinge on a side away from the main guardrail plate, and a slide rail is arranged at the rear of the main guardrail plate, and a slide groove is opened on the top of the slide rail, and the inner wall of the slide groove is rotatably connected with a bidirectional screw rod through a bearing, and a slider is provided on the threaded sleeve of the outer wall of the bidirectional screw rod, and the slider is slidably arranged in the slide groove, and the entire guardrail is clamped in the elevator shaft opening by arranging two clamping plates to fix the entire guardrail, and the slider is driven to move by rotating the bidirectional screw rod, and then the connecting rod is driven to move, which is used to adjust the spacing between the two clamping plates to ensure that the clamping plates can be clamped in elevator shaft openings of different sizes, and only a single bidirectional screw rod needs to be rotated during the adjustment process.

Description

Technical Field

[0001] The utility model relates to the technical field of guardrails, in particular to a guardrail for elevator maintenance. Background Art

[0002] With the vigorous development of the elevator industry, it has been widely used in more and more occasions. The "Safety Specifications for Elevator Manufacturing and Installation" points out that when the inspection trapdoor is opened, measures should be taken to prevent people from falling (such as setting up guardrails). When the floor heights of the machine room are different and the difference is greater than 0.50m, stairs or steps should be set up, and guardrails should be installed. At present, the existing elevators are installed with maintenance guardrails, which can be moved at will by outsiders, which may easily cause safety hazards. Utility Model Content

[0003] The purpose of the utility model is to provide a protective fence for elevator maintenance to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a guardrail for elevator maintenance, comprising a main guardrail plate and a secondary guardrail plate, the main guardrail plate and the secondary guardrail plate are connected by hinges, the side of the secondary guardrail plate away from the main guardrail plate is connected to a clamping plate by a hinge, a slide rail is arranged at the rear of the main guardrail plate, a slide groove is arranged on the top of the slide rail, a bidirectional screw rod is rotatably connected to the inner wall of the slide groove through a bearing, a slider is threadedly sleeved on the outer wall of the bidirectional screw rod, the slider is slidably arranged in the slide groove, a connecting rod is fixedly installed on the top of the slider, and the end of the connecting rod away from the slider is fixedly connected to the outer wall of the clamping plate, two of the secondary guardrail plates and two of the clamping plates are arranged, and are symmetrically arranged on the left and right sides of the main guardrail plate.

[0005] Furthermore, a bevel gear 1 is fixedly installed on the outer wall of the bidirectional screw, and the bevel gear 1 is meshed with a bevel gear 2. A rotating shaft is fixedly installed on the inner wall of the bevel gear 2. The front and rear ends of the rotating shaft pass through the inner wall of the slide groove through bearings, and the front end of the rotating shaft movably passes through the outer wall of the main guardrail plate.

[0006] Furthermore, display panels are fixedly installed on the front sides of the main guardrail panels and the secondary guardrail panels.

[0007] Furthermore, an anti-skid plate is provided on an outer wall of a side of the clamping plate away from the connecting rod, and an anti-skid plate is provided on an outer wall of a side of the clamping plate away from the clamping plate with vertically arranged anti-skid patterns.

[0008] Furthermore, a turning handle is fixedly mounted on both the front and rear ends of the rotating shaft, and an anti-slip protrusion is arranged on the outer wall of the turning handle.

[0009] Furthermore, a groove is formed on the outer wall of the clamping plate, a spring is fixedly installed on the inner wall of the groove, a connecting plate is fixedly installed on the end of the spring, the connecting plate is slidably arranged in the groove, and the outer wall of the connecting plate is fixedly connected to the outer wall of the anti-slip plate.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The entire guardrail is clamped in the elevator shaft opening by setting two clamping plates to fix the entire guardrail. The slider is driven to move by rotating the bidirectional screw rod, and then the connecting rod is driven to move to adjust the distance between the two clamping plates to ensure that the clamping plates can be clamped in elevator shaft openings of different sizes. During the adjustment process, only a single bidirectional screw rod needs to be rotated;

[0012] 2. Through the meshing of bevel gear 1 and bevel gear 2, the rotating shaft can drive the two-way screw to rotate, and the front end of the rotating shaft passes through the main guardrail plate, so that the rotating shaft can be rotated while standing outside the guardrail to adjust the distance between the two clamping plates. Because the rear end of the rotating shaft also extends out of the slide groove, all construction personnel can still rotate the rotating shaft in the elevator shaft, and the front end of the rotating shaft passes through the main guardrail plate, which can also limit the main guardrail plate, so that during the adjustment process, the main guardrail plate is always facing the slide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 For this utility model Figure 1 A schematic diagram of the structure of the back view;

[0015] Figure 3 This is a structural schematic diagram of an exploded view of the inner structure of the slide rail of the utility model;

[0016] Figure 4 It is a structural schematic diagram of an exploded view of the structure inside the groove of the utility model.

[0017] In the figure: 1. Main guardrail plate; 2. Auxiliary guardrail plate; 3. Clamping plate; 4. Slide rail; 5. Connecting rod; 6. Sliding block; 7. Bidirectional screw rod; 8. Slide groove; 9. Bevel gear 1; 10. Bevel gear 2; 11. Rotating shaft; 12. Anti-skid plate; 13. Connecting plate; 14. Spring; 15. Groove; 16. Display board. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] See also Figure 1-Figure 4 The utility model provides a technical solution: a guardrail for elevator maintenance, comprising a main guardrail plate 1 and a secondary guardrail plate 2, the main guardrail plate 1 and the secondary guardrail plate 2 are connected by a hinge, the side of the secondary guardrail plate 2 away from the main guardrail plate 1 is connected with a pressing plate 3 by a hinge, a slide rail 4 is arranged behind the main guardrail plate 1, a slide groove 8 is arranged on the top of the slide rail 4, a bidirectional screw rod 7 is rotatably connected to the inner wall of the slide groove 8 through a bearing, a slider 6 is threadedly sleeved on the outer wall of the bidirectional screw rod 7, the slider 6 is slidably arranged in the slide groove 8, and a connecting rod 5 is fixedly installed on the top of the slider 6, One end of the connecting rod 5 away from the slider 6 is fixedly connected to the outer wall of the clamping plate 3. Two auxiliary guardrail plates 2 and clamping plates 3 are provided, and are symmetrically arranged on the left and right sides of the main guardrail plate 1. By setting two clamping plates 3, the entire guardrail is clamped in the elevator shaft opening to achieve the fixation of the entire guardrail. The slider 6 is driven to move by rotating the bidirectional screw rod 7, and then the connecting rod 5 is driven to move, which is used to adjust the distance between the two clamping plates 3 to ensure that the clamping plates 3 can be clamped in elevator shaft openings of different sizes. During the adjustment process, only a single bidirectional screw rod 7 needs to be rotated, which is simple and quick.

[0020] The outer wall of the two-way screw rod 7 is fixedly installed with a bevel gear 1 9, and the bevel gear 1 9 is meshed with a bevel gear 2 10. The inner wall of the bevel gear 2 10 is fixedly installed with a rotating shaft 11. The front and rear ends of the rotating shaft 11 pass through the inner wall of the slide groove 8 through bearings, and the front end of the rotating shaft 11 movably passes through the outer wall of the main guardrail plate 1. Through the meshing of the bevel gear 1 9 and the bevel gear 2 10, the rotating shaft 11 can drive the two-way screw rod 7 to rotate, and the front end of the rotating shaft 11 passes through the main guardrail plate 1, so that the rotating shaft 11 can be rotated when standing outside the guardrail to adjust the spacing between the two clamping plates 3. Because the rear end of the rotating shaft 11 also extends out of the slide groove 8, all construction personnel can still rotate the rotating shaft 11 in the elevator shaft, and the front end of the rotating shaft 11 passes through the main guardrail plate 1, which can also limit the main guardrail plate 1, so that during the adjustment process, the main guardrail plate 1 is always facing the slide rail 4;

[0021] A display board 16 is fixedly installed on the front of the main guardrail board 1 and the auxiliary guardrail board 2 for displaying warning information;

[0022] An anti-skid plate 12 is provided on the outer wall of the side of the clamping plate 3 away from the connecting rod 5, and a vertically arranged anti-skid pattern is provided on the outer wall of the side of the anti-skid plate 12 away from the clamping plate 3. The anti-skid plate 12 is provided to increase the friction between the clamping plate 3 and the inner wall of the elevator shaft opening, so that the guardrail is fixed more stably, and the vertical arrangement of the anti-skid pattern can effectively increase the anti-skid effect of the anti-skid plate 12 in the horizontal direction;

[0023] The front and rear ends of the rotating shaft 11 are fixedly mounted with a turning handle, and the outer wall of the turning handle is provided with an anti-slip protrusion, so that the rotating shaft 11 is more convenient to rotate;

[0024] A groove 15 is provided on the outer wall of the clamping plate 3, and a spring 14 is fixedly installed on the inner wall of the groove 15. A connecting plate 13 is fixedly installed on the end of the spring 14. The connecting plate 13 is slidably set in the groove 15, and the outer wall of the connecting plate 13 is fixedly connected to the outer wall of the anti-skid plate 12. The spring 14 and the connecting plate 13 are used to connect the anti-skid plate 12 and the clamping plate 3 together. When the clamping plate 3 is adjusted to move toward the elevator shaft opening, the spring 14 pushes the connecting plate 13 to move out of the groove 15, thereby pushing the anti-skid plate 12 to contact the elevator shaft opening in advance, providing a certain buffering effect.

[0025] Working principle: When in use, the guardrail is placed at the elevator shaft opening, and the slide rail 4 is placed in the center position. The rotating shaft 11 drives the bevel gear 2 10 to rotate, and then drives the bevel gear 1 9 to rotate, so that the two-way screw rod 7 rotates, and the rotation of the two-way screw rod 7 drives the slider 6 to move, and then drives the connecting rod 5 to move, so that the connecting rod 5 pushes the clamping plate 3 to move toward the inner wall of the elevator shaft opening, until the left and right clamping plates 3 are stuck in the elevator shaft opening, and the guardrail is fixed.

[0026] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

Claims

1. A guardrail for elevator maintenance, comprising a main guardrail plate (1) and a secondary guardrail plate (2), characterized in that: The main guardrail plate (1) and the secondary guardrail plate (2) are connected by hinges. The side of the secondary guardrail plate (2) away from the main guardrail plate (1) is connected to a clamping plate (3) by hinges. A slide rail (4) is arranged at the rear of the main guardrail plate (1). A slide groove (8) is provided at the top of the slide rail (4). The inner wall of the slide groove (8) is rotatably connected to a bidirectional screw rod (7) through a bearing. A slider (6) is threadedly sleeved on the outer wall of the bidirectional screw rod (7). The slider (6) is slidably arranged in the slide groove (8). A connecting rod (5) is fixedly installed at the top of the slider (6). The end of the connecting rod (5) away from the slider (6) is fixedly connected to the outer wall of the clamping plate (3). Two of the secondary guardrail plates (2) and the clamping plate (3) are arranged, and are symmetrically arranged on the left and right sides of the main guardrail plate (1).

2. The elevator maintenance guardrail according to claim 1, characterized in that: A bevel gear 1 (9) is fixedly mounted on the outer wall of the bidirectional screw rod (7), and the bevel gear 1 (9) is meshed with a bevel gear 2 (10). A rotating shaft (11) is fixedly mounted on the inner wall of the bevel gear 2 (10), and the front and rear ends of the rotating shaft (11) penetrate the inner wall of the slide groove (8) through bearings, and the front end of the rotating shaft (11) movably penetrates the outer wall of the main guardrail plate (1).

3. The elevator maintenance guardrail according to claim 1, characterized in that: A display board (16) is fixedly mounted on the front of the main guardrail board (1) and the auxiliary guardrail board (2).

4. The elevator maintenance guardrail according to claim 1, characterized in that: An anti-skid plate (12) is provided on the outer wall of the clamping plate (3) away from the connecting rod (5), and vertically arranged anti-skid patterns are provided on the outer wall of the anti-skid plate (12) away from the clamping plate (3).

5. The elevator maintenance guardrail according to claim 2, characterized in that: A turning handle is fixedly mounted on both the front and rear ends of the rotating shaft (11), and an anti-slip protrusion is arranged on the outer wall of the turning handle.

6. The elevator maintenance guardrail according to claim 1, characterized in that: The outer wall of the clamping plate (3) is provided with a groove (15), the inner wall of the groove (15) is fixedly mounted with a spring (14), the end of the spring (14) is fixedly mounted with a connecting plate (13), the connecting plate (13) is slidably arranged in the groove (15), and the outer wall of the connecting plate (13) is fixedly connected to the outer wall of the anti-slip plate (12).

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