Elevator door limiting device for elevator maintenance

Abstract

The utility model discloses an elevator door limiting device for elevator maintenance, which belongs to the technical field of elevator maintenance and comprises a limiting frame, a connecting rod is rotatably connected to the inner wall of the limiting frame, a worm is fixedly mounted at the bottom end of the connecting rod, a worm gear is meshed with the outer surface of the worm, threaded rods are fixedly mounted on the front side and the back side of the worm gear respectively, and the threaded rods are connected with the connecting rod. The outer surface of each threaded rod is in threaded connection with a movable frame, the outer surface of each movable frame is in sliding connection with the inner wall of the limiting frame, two supporting rods are movably hinged to the inner side wall of the limiting frame, the upper surface of each supporting rod is rotationally connected with a warning board, and two stress springs are fixedly installed on the inner side wall of the limiting frame. According to the elevator door limiting device for elevator maintenance, an insertion block can be driven to move through elastic force provided by a stress spring, so that the insertion block can limit a supporting rod, a warning board can be limited, and non-staff can be warned conveniently when an elevator is maintained.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of elevator maintenance, and particularly relates to an elevator door limiting device for elevator maintenance. BACKGROUND

[0002] The elevator is a mechanical and electrical equipment that is driven by power, uses a box body running along rigid guide rails or steps running along a fixed line, and is used for lifting or parallel conveying of people or goods. The vertical lifting elevator has a car that runs between at least two vertical rigid guide rails. The size and structure of the car are convenient for passengers to enter and exit or load and unload goods. When the elevator door is maintained, a limiting device is needed to limit the elevator door.

[0003] The utility model discloses a kind of elevator door limiting devices for elevator maintenance, including frame and cover plate, the cover plate is cooperated with screw thread and is installed on the upside of frame, the opposite sides in frame are respectively provided with sliding bar, the front side wall of frame is provided with the sliding passage of cooperation two groups of sliding bar sliding, the sliding bar is slidably inserted and provided with limiting rod in front side interior, two groups of the side of the sliding bar close to each other is installed and is provided with push rod in dislocation, the inside of push rod is slidably inserted and provided with positioning rod, the end of positioning rod that extends push rod is connected with another group of sliding bar, the side of two groups of push rod close to each other is provided with multiple groups of engagement teeth at equal intervals, gear is rotatably installed and provided at the center of frame bottom, the engagement teeth on the two groups of push rod are engaged with each other respectively on the opposite sides of gear, motor of driving gear is installed and provided with cover plate center.

[0004] The above technical scheme is adopted, two groups of dynamic strips drive two groups of limiting rods to adjust the distance, the distance between the two groups of limiting rods is adjusted according to the size of the elevator door, and the working efficiency is improved. However, the frame of the limiting device is large, which occupies a large space when limiting the elevator door, and it is not convenient to warn non-working personnel when maintaining the elevator, thus there is a certain safety hazard, and the practicality is low.

[0005] Therefore, we propose an elevator door limiting device for elevator maintenance to solve the above problems. Content of utility model

[0006] The purpose of the present application is to solve the problem of the large frame of the limiting device in the prior art, which occupies a large space when limiting the elevator door, and it is not convenient to warn non-working personnel when maintaining the elevator, thus there is a certain safety hazard, and the practicality is low. A kind of elevator door limiting device for elevator maintenance is proposed.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0008] The utility model provides an elevator door limiting device for elevator maintenance, including the limiting frame, the inner wall rotationally connected with connecting rod of limiting frame, the bottom fixedly installed with worm of connecting rod, the outer surface of worm is engaged with worm wheel, the front and back of worm wheel all are fixedly installed with threaded rod, the outer surface of each threaded rod all is threadedly connected with movable frame, the outer surface of each movable frame all is slidably connected with the inner wall of limiting frame, the inner side wall of limiting frame is swingingly linked with two support rods, the upper surface of each support rod all is rotationally connected with warning board, the inner side wall of limiting frame is fixedly installed with two force spring, the right end of each force spring all is fixedly installed with the plug, the outer surface of each plug all is slidably connected with the inner wall of support rod.

[0009] Preferably, the top end of the connecting rod is fixedly installed with a handle, and the outer surface of the handle is provided with anti-skid grooves arranged at equal distances.

[0010] Preferably, the bottom end of the worm is fixedly installed with a bearing, and the bottom surface of the bearing is fixedly connected with the inner bottom wall of the limiting frame.

[0011] Preferably, the inner bottom wall of the limiting frame is fixedly installed with two limiting plates, and the outer surface of each limiting plate is rotationally connected with the inner wall of the threaded rod.

[0012] Preferably, the side face of each movable frame away from each other is fixedly installed with a rubber plate, and the side face of each rubber plate away from the movable frame is provided with anti-skid holes arranged at equal distances.

[0013] Preferably, the upper surface of each plug is fixedly installed with a connecting block, the outer surface of each connecting block is slidably connected with the inner wall of the limiting frame, and the upper surface of each connecting block is fixedly installed with a pulling block.

[0014] Preferably, the bottom surface of the limiting frame is fixedly installed with an anti-skid plate, and the bottom surface of the anti-skid plate is fixedly installed with rubber blocks arranged at equal distances.

[0015] Preferably, the right side face of each warning board is pasted with a warning sticker, and the right side face of the limiting frame is fixedly installed with an illuminating lamp.

[0016] In summary, the technical effects and advantages of the present application are as follows: the connecting rod is arranged to drive the worm to rotate, the worm drives the worm gear to rotate, the rotation of the worm gear drives the threaded rod to rotate, the threaded rod drives the movable frame to limit the elevator door, the contact angle between the worm gear and the worm is small, the friction is large, when the worm stops rotating, even if external force acts on the worm gear, it is difficult to drive the worm to rotate in the opposite direction, the self-locking property of the worm gear and the worm can brake the elevator door, the movable frame extends to both sides, so that the elevator door is not occupied when being limited, the elastic force provided by the stressed spring drives the insert block to move, the insert block limits the supporting rod, thereby limiting the warning sign, so that the non-working personnel can be warned when maintaining the elevator, thereby reducing the safety hazard, and the practicality is high. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Fig. 1 is a schematic view of the structure of the limiting frame of the utility model;

[0018] Figure 2 Fig. 2 is a schematic view of the structure of the worm of the utility model;

[0019] Figure 3 Fig. 3 is a schematic view of the structure of the stressed spring of the utility model;

[0020] Figure 4 Fig. 4 is a schematic view of the structure of the anti-skid plate of the utility model;

[0021] Figure 5 Fig. 5 is a schematic view of the structure of the illuminating lamp of the utility model.

[0022] In the figure: 1, limiting frame; 2, connecting rod; 3, worm; 4, worm gear; 5, threaded rod; 6, movable frame; 7, supporting rod; 8, warning sign; 9, stressed spring; 10, insert block; 11, handle; 12, anti-skid groove; 13, bearing; 14, limiting plate; 15, rubber plate; 16, anti-skid hole; 17, connecting block; 18, pull block; 19, anti-skid plate; 20, rubber block; 21, warning sticker; 22, illuminating lamp. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0024] REFERENCE Figures 1-5The utility model provides an elevator door limiting device for elevator maintenance, including limiting frame 1, the inner wall rotationally connected with connecting rod 2 of limiting frame 1, the bottom fixedly installed with worm 3 of connecting rod 2, the outer surface of worm 3 is engaged with worm wheel 4, the front and back of worm wheel 4 are fixedly installed with threaded rod 5, the top fixedly installed with handle 11 of connecting rod 2, the outer surface of handle 11 is equipped with the anti -skid groove 12 of equidistance arrangement, through handle 11 can conveniently personnel rotationally connecting rod 2, to conveniently drive worm 3 rotates, anti -skid groove 12 can increase the friction between handle 11 and personnel hand, prevent personnel when rotating connecting rod 2 hand and slip off.

[0025] The outer surface of each threaded rod 5 is threadedly connected with a movable frame 6, the outer surface of each movable frame 6 is slidably connected with the inner wall of the limiting frame 1, the inner side wall of the limiting frame 1 is movably hinged with two support rods 7, the bottom of the worm 3 is fixedly installed with a bearing 13, the bottom surface of the bearing 13 is fixedly connected with the inner bottom wall of the limiting frame 1, the worm 3 can be limited by the bearing 13, so as to prevent the worm 3 from shaking and shifting when rotating, and the stability of the worm 3 when rotating is increased.

[0026] The upper surface of each support rod 7 is rotatably connected with a warning sign 8, the inner side wall of the limiting frame 1 is fixedly installed with two force springs 9, the right end of each force spring 9 is fixedly installed with an insertion block 10, the outer surface of each insertion block 10 is slidably connected with the inner wall of the support rod 7, the inner bottom wall of the limiting frame 1 is fixedly installed with two limiting plates 14, the outer surface of each limiting plate 14 is rotatably connected with the inner wall of the threaded rod 5, the threaded rod 5 can be limited by the limiting plate 14, so as to prevent the threaded rod 5 from falling off when rotating, and the stability of the threaded rod 5 when rotating is increased.

[0027] The side of each movable frame 6 away from the other is fixedly installed with a rubber plate 15, the side of each rubber plate 15 away from the movable frame 6 is provided with anti-slip holes 16 arranged at equal distances, the friction between the movable frame 6 and the elevator door can be increased by the rubber plate 15, so as to prevent the movable frame 6 from slipping off and increase the stability of the device.

[0028] The upper surface of each insertion block 10 is fixedly installed with a connecting block 17, the outer surface of each connecting block 17 is slidably connected with the inner wall of the limiting frame 1, the upper surface of each connecting block 17 is fixedly installed with a pulling block 18, the insertion block 10 can be manually pulled to move by the pulling block 18, so as to conveniently pull out the insertion block 10 from the support rod 7 and release the limiting of the support rod 7.

[0029] The bottom of the limiting frame 1 is fixedly installed with a non-slip plate 19, the bottom of the non-slip plate 19 is fixedly installed with rubber blocks 20 arranged at equal distances, the friction between the non-slip plate 19 and the ground can be increased by the rubber blocks 20, so as to make the limiting frame 1 more stable and increase the stability of the limiting frame 1.

[0030] The right side of each warning board 8 is pasted with a warning sticker 21, and the right side of the limiting frame 1 is fixedly installed with an illuminating lamp 22, so that the personnel can conveniently check the warning sticker 21, and the illuminating lamp 22 can emit light at night to remind the personnel, thereby increasing the practicability of the device.

[0031] The working principle of the utility model is: in use, first, the illuminating lamp 22 is connected to the power supply, when the elevator maintenance needs to limit the elevator door, the limiting frame 1 is placed between two elevator doors, the handle 11 is manually held to drive the connecting rod 2 to rotate, so that the connecting rod 2 can drive the worm 3 to rotate, thereby the worm 3 can drive the worm wheel 4 to rotate, the rotation of the worm wheel 4 can drive the threaded rod 5 to rotate, so that the threaded rod 5 can drive the movable frame 6 to limit the elevator door, the rubber plate 15 can increase the friction between the movable frame 6 and the elevator door, thereby preventing the movable frame 6 from falling, because the contact angle between the worm wheel 4 and the worm 3 is small, the friction is large, when the worm 3 stops rotating, even if external force acts on the worm wheel 4, it is also difficult to drive the worm 3 to rotate in the opposite direction, so that the self-locking property of the worm wheel 4 and the worm 3 can brake the elevator door, because the movable frame 6 extends to both sides, so that when the elevator door is limited, a large space is not occupied, the elastic force provided by the force spring 9 can drive the plug 10 to move, so that the plug 10 can limit the supporting rod 7, thereby the warning board 8 can be limited, the warning sticker 21 can be conveniently checked by personnel, the illuminating lamp 22 can emit light at night to remind personnel, thereby reducing the security risk, the pulling block 18 is manually held to pull out the plug 10 from the supporting rod 7, thereby the limiting of the supporting rod 7 can be released, so that the warning board 8 can be stored in the limiting frame 1, thereby the overall volume of the elevator door limiting device for elevator maintenance can be reduced, so that the elevator door limiting device for elevator maintenance is more practical.

[0032] The above is only the preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. An elevator door limiting device for elevator maintenance, comprising a limiting frame (1), characterized in that: The inner wall of the limiting frame (1) is rotationally connected with a connecting rod (2), the bottom end of the connecting rod (2) is fixedly installed with a worm (3), the outer surface of the worm (3) is engaged with a worm gear (4), the front and back surfaces of the worm gear (4) are fixedly installed with threaded rods (5), the outer surface of each threaded rod (5) is threadedly connected with a movable frame (6), the outer surface of each movable frame (6) is slidably connected with the inner wall of the limiting frame (1), the inner side wall of the limiting frame (1) is movably hinged with two supporting rods (7), the upper surface of each supporting rod (7) is rotationally connected with a warning sign (8), the inner side wall of the limiting frame (1) is fixedly installed with two force springs (9), the right end of each force spring (9) is fixedly installed with an insertion block (10), and the outer surface of each insertion block (10) is slidably connected with the inner wall of the supporting rod (7).

2. The elevator door limiting device for maintenance of an elevator according to claim 1, characterized in that: The top end of the connecting rod (2) is fixedly installed with a handle (11), and the outer surface of the handle (11) is provided with anti-skid grooves (12) arranged at equal distances.

3. The elevator door limiting device for maintenance of an elevator according to claim 1, characterized in that: The bottom end of the worm (3) is fixedly installed with a bearing (13), and the bottom surface of the bearing (13) is fixedly connected with the inner bottom wall of the limiting frame (1).

4. The elevator door limiting device for maintenance of an elevator according to claim 1, characterized in that: The inner bottom wall of the limiting frame (1) is fixedly installed with two limiting plates (14), and the outer surface of each limiting plate (14) is rotationally connected with the inner wall of the threaded rod (5).

5. The elevator door limiting device for maintenance of an elevator according to claim 1, characterized in that: The side face of each movable frame (6) away from each other is fixedly installed with a rubber plate (15), and the side face of each rubber plate (15) away from the movable frame (6) is provided with anti-skid holes (16) arranged at equal distances.

6. The elevator door limiting device for maintenance of an elevator according to claim 1, characterized in that: The upper surface of each insertion block (10) is fixedly installed with a connecting block (17), the outer surface of each connecting block (17) is slidably connected with the inner wall of the limiting frame (1), and the upper surface of each connecting block (17) is fixedly installed with a pulling block (18).

7. The elevator door limiting device for maintenance of an elevator according to claim 1, characterized in that: The bottom surface of the limiting frame (1) is fixedly installed with an anti-skid plate (19), and the bottom surface of the anti-skid plate (19) is fixedly installed with rubber blocks (20) arranged at equal distances.

8. The elevator door limiting device for maintenance of an elevator according to claim 1, characterized in that: The right side face of each warning sign (8) is pasted with a warning sticker (21), and the right side face of the limiting frame (1) is fixedly installed with an illuminating lamp (22).

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