A special detection device for elevator landing door strength

Abstract

The utility model belongs to elevator safety detection technical field, concretely relates to a kind of elevator landing door strength special detection device, including door frame and fixed frame, the inner wall of fixed frame is fixedly installed with fixed plate, the surface of fixed plate is provided with runner device, the runner device includes fixed link, the fixed link is fixedly installed in the side of door frame close to fixed frame, the bottom of fixed link is fixedly installed with sling, the end of sling away from fixed link is fixedly installed with pendulum bob, the surface of pendulum bob is fixedly installed with traction rope, the surface of fixed frame is fixedly installed with fixed block, the end of traction rope away from pendulum bob is fixedly installed with rotating lever.

Description

Technical Field

[0001] This utility model belongs to the field of elevator safety testing technology, specifically relating to a special testing device for the strength of elevator landing doors. Background Technology

[0002] A special testing device for elevator landing door strength is a dedicated device used to test the strength and safety performance of elevator landing doors under stress. It measures the deformation, damage, or load-bearing capacity of the door body by applying impact force. This device can ensure that the landing door meets safety standards and provide reliable data for elevator design and quality inspection.

[0003] A Chinese patent, CN223005926U, discloses an elevator landing door strength testing device. The device includes a main body with an impact mechanism, a traction mechanism, and an anti-secondary impact mechanism. The anti-secondary impact mechanism includes an anti-collision bracket with a sliding partition slidably connected to it. A second spring is fixed between the anti-collision bracket and the sliding partition bracket. A connecting frame is fixed to one end of the traction mechanism, and a release telescopic rod is fixed to the connecting frame. One end of the release telescopic rod engages with a second connecting ring, and a connecting rope is provided between the second connecting ring and the sliding partition.

[0004] Based on the above review of an elevator landing door strength testing device, the following problems exist: the rope pulling process still requires manual intervention, the effect of blocking the pendulum from hitting the elevator door is not good, and the effect of fixing the elevator door to be tested is not good. Therefore, we propose a dedicated elevator landing door strength testing device. Utility Model Content

[0005] The purpose of this invention is to provide a special testing device for the strength of elevator landing doors, which can solve the problems in related technologies where manual intervention is still required during the rope pulling process, the effect of blocking the pendulum from hitting the elevator door is not good, and the effect of fixing the elevator door to be tested is not good.

[0006] The specific technical solution adopted by this utility model is as follows: A special testing device for the strength of elevator landing doors includes a door frame and a fixed frame. A fixed plate is fixedly installed on the inner wall of the fixed frame. A rotating wheel device is provided on the surface of the fixed plate. The rotating wheel device includes a fixed rod, which is fixedly installed on the side of the door frame near the fixed frame. A suspension rope is fixedly installed at the bottom of the fixed rod. A pendulum is fixedly installed at the end of the suspension rope away from the fixed rod. A traction rope is fixedly installed on the surface of the pendulum. A fixed block is fixedly installed on the surface of the fixed frame. A rotating rod is fixedly installed at the end of the traction rope away from the pendulum. The rotating rod is rotatably installed on the surface of the fixed plate. A turntable is rotatably installed on the surface of the fixed plate. A fixed shaft is fixedly installed on one side of the turntable. A square groove is formed on the side of the turntable away from the fixed plate. A push block is rotatably installed in the square groove. An L-shaped plate is fixedly installed in the square groove.

[0007] A torsion spring is provided between the push block and the L-shaped plate, and an elevator door entrance is opened on the surface of the door frame. The torsion spring can drive the push block to reset.

[0008] A square hole is provided at the end of the fixed rod away from the door frame. A guide wheel is provided in the square hole. A guide wheel is provided at the bottom of the fixed block. The traction rope is in contact with both the guide wheel and the guide wheel. The arrangement of the guide wheel restricts the movement trajectory of the traction rope.

[0009] The door frame is equipped with a fixing device, which includes a straight plate that is slidably installed on the inner and outer walls of the door frame. A grab plate is fixedly installed on the top of the straight plate. A long rod is slidably installed inside the door frame, and a triangular block is fixedly installed on the surface of the long rod. A crossbar is slidably installed inside the door frame, and a triangular plate is fixedly installed on the surface of the crossbar.

[0010] A triangular connecting block is fixedly installed on the side of the door frame away from the fixed frame, and a right-angle plate is slidably installed on the bottom of the door frame. Both the triangular connecting block and the right-angle plate increase the stability of the device.

[0011] A motor is mounted on the side of the fixed plate away from the turntable, and the turntable is fixedly installed at the output end of the motor. The motor drives the turntable to rotate.

[0012] The technical effects achieved by this utility model are as follows: 1. This utility model, through the setting of the rotating wheel device, the rotating rod pulls the traction rope, and the traction rope pulls the pendulum, so that the pendulum does not need to be pulled manually, saving manpower, avoiding secondary damage to the elevator door to be tested by the pendulum, and making the experimental data more accurate when the device is tested.

[0013] 2. This utility model uses a fixing device to move the triangular plate driven by the grab plate, thus fixing the elevator door. The structure is simple and effectively prevents instability during elevator door testing. It can ensure that the force state and response of the door body are within a controllable range during impact testing, thereby improving safety during use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the entire utility model; Figure 2 This is a schematic diagram of the back structure of this utility model; Figure 3 This is a schematic diagram of the structure of the rotating wheel device of this utility model; Figure 4 This is a schematic diagram of the fixing device structure of this utility model; Figure 5 This is a schematic diagram of the cross-sectional structure of the fixing device of this utility model; Figure 6 This is a schematic diagram of the enlarged structure at point A of this utility model.

[0015] The attached diagram lists the components represented by each number as follows: 1. Door frame; 2. Fixed frame; 3. Fixed plate; 4. Rotating wheel device; 401. Fixed rod; 402. Suspension rope; 403. Pendulum; 404. Traction rope; 405. Fixed block; 406. Rotating rod; 407. Turntable; 408. Fixed shaft; 409. Push block; 410. L-shaped plate; 5. Fixing device; 501. Straight plate; 502. Grab plate; 503. Long rod; 504. Horizontal bar; 505. Triangle plate; 506. Triangle block. Detailed Implementation

[0016] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0017] like Figure 1-6As shown, a special testing device for the strength of elevator landing doors includes a door frame 1 and a fixed frame 2. A fixed plate 3 is fixedly installed on the inner wall of the fixed frame 2. A rotating wheel device 4 is provided on the surface of the fixed plate 3. The rotating wheel device 4 includes a fixed rod 401, which is fixedly installed on the side of the door frame 1 near the fixed frame 2. A suspension rope 402 is fixedly installed at the bottom of the fixed rod 401. A pendulum 403 is fixedly installed at the end of the suspension rope 402 away from the fixed rod 401. A traction device is fixedly installed on the surface of the pendulum 403. Rope 404, fixing block 405 is fixedly installed on the surface of fixing frame 2, traction rope 404 is fixedly installed with a rotating rod 406 at the end away from pendulum 403, rotating rod 406 is rotatably installed on the surface of fixing plate 3, turntable 407 is rotatably installed on the surface of fixing plate 3, fixing shaft 408 is fixedly installed on one side of the turntable 407 and fixing plate 3, a square groove is opened on the side of the turntable 407 away from fixing plate 3, push block 409 is rotatably installed in the square groove, and L-shaped plate 410 is fixedly installed in the square groove; A torsion spring is provided between the push block 409 and the L-shaped plate 410. An elevator door entrance is opened on the surface of the door frame 1. The torsion spring can drive the push block 409 to reset. A square hole is provided at the end of the fixed rod 401 away from the door frame 1. A guide wheel 1 is provided in the square hole. A guide wheel 2 is provided at the bottom of the fixed block 405. The traction rope 404 is in contact with both the guide wheel 1 and the guide wheel 2. The setting of the guide wheel 1 and the guide wheel 2 restricts the movement trajectory of the traction rope 404. The door frame 1 is equipped with a fixing device 5, which includes a straight plate 501. The straight plate 501 is slidably installed on the inner and outer walls of the door frame 1. A gripping plate 502 is fixedly installed on the top of the straight plate 501. A long rod 503 is slidably installed inside the door frame 1. A triangular block 506 is fixedly installed on the surface of the long rod 503. A crossbar 504 is slidably installed inside the door frame 1. A triangular plate 505 is fixedly installed on the surface of the crossbar 504. A triangular connecting block is fixedly installed on the side of the door frame 1 away from the fixed frame 2, and a right-angle plate is slidably installed on the bottom of the door frame 1. Both the triangular connecting block and the right-angle plate increase the stability of the device. A motor is installed on the side of the fixed plate 3 away from the turntable 407. The turntable 407 is fixedly installed at the output end of the motor, and the motor drives the turntable 407 to rotate.

[0018] Working principle: The motor drives the turntable 407 to rotate, which in turn drives the fixed shaft 408 to rotate. The rotation of the fixed shaft 408 pushes the rotating rod 406 to rotate, which in turn drives the traction rope 404 to move away from the door frame 1. The movement of the traction rope 404 away from the door frame 1 causes the pendulum 403 to move towards the square hole on the fixed rod 401. When the rotating rod 406 rotates 180 degrees, the pendulum 403 moves to the square hole on the fixed rod 401, and the fixed shaft 408 and the rotating rod 406 are no longer in contact. Due to its own weight, the pendulum 403 moves to the bottom, applying an impact force to the elevator door to be tested, thus completing the impact test on the elevator door. The movement of the pendulum 403 to the bottom drives the traction rope 404 to move closer to the door frame 1. The rotating rod 406 rotates upwards, making contact with the push block 409 and pushing it into the square slot. The rotation of the push block 409 causes the rotating rod 406 to pass over the push block 409. After passing the push block 409, the torsion spring causes the push block 409 to reset, pushing the rotating rod 406 to continue rotating. This rotation causes the traction rope 404 to move towards the fixed frame 2, pulling the pendulum 403. The fixed frame 2's movement pulls the pendulum 403, causing its own weight and the pulling force to cancel each other out. This mutual cancellation prevents the pendulum 403 from impacting the elevator door again, making the experimental data more accurate during testing. Pulling the pendulum 403 does not require manual intervention, saving manpower.

[0019] The worker places the elevator door to be tested inside the door frame 1. The elevator door moves into the door frame 1, which in turn moves the straight plate 501 into the door frame 1. The straight plate 501 moves into the door frame 1, causing the gripper plate 502 to move into the door frame 1. The gripper plate 502 moves into the door frame 1 and comes into contact with the triangular plate 505. The contact between the gripper plate 502 and the triangular plate 505 causes the triangular plate 505 to move to the bottom. Triangle plate 505 moves to the bottom, causing crossbar 504 to move to the bottom. The movement of crossbar 504 to the bottom fixes the elevator door. Grab plate 502 moves inward into door frame 1 and contacts triangle block 506. The contact between grab plate 502 and triangle block 506 causes triangle block 506 to move towards the elevator door. The movement of triangle block 506 towards the elevator door causes long rod 503 to move towards the elevator door. The movement of long rod 503 towards the elevator door fixes the elevator door. The structure is simple and effectively prevents instability during elevator door testing. Fixing the elevator door ensures that the stress state and response of the door body are within a controllable range during impact testing, improving safety during use.

[0020] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A special testing device for the strength of elevator landing doors, characterized in that: The system includes a door frame (1) and a fixed frame (2). A fixed plate (3) is fixedly installed on the inner wall of the fixed frame (2). A rotating wheel device (4) is provided on the surface of the fixed plate (3). The rotating wheel device (4) includes a fixed rod (401). The fixed rod (401) is fixedly installed on the side of the door frame (1) near the fixed frame (2). A hanging rope (402) is fixedly installed at the bottom of the fixed rod (401). A pendulum (403) is fixedly installed at the end of the hanging rope (402) away from the fixed rod (401). A traction rope (404) is fixedly installed on the surface of the pendulum (403). A fixing block (405) is fixedly installed on the surface of the fixed frame (2). A rotating rod (406) is fixedly installed at the end of the traction rope (404) away from the pendulum (403). The rotating rod (406) is rotatably installed on the surface of the fixed plate (3). A turntable (407) is rotatably installed on the surface of the fixed plate (3). A fixing shaft (408) is fixedly installed on one side of the turntable (407) and the side of the turntable (407) away from the fixed plate (3) is provided with a square groove. A push block (409) is rotatably installed in the square groove. An L-shaped plate (410) is fixedly installed in the square groove.

2. The elevator landing door strength testing device according to claim 1, characterized in that: A torsion spring is provided between the push block (409) and the L-shaped plate (410), and an elevator door entrance is provided on the surface of the door frame (1).

3. The elevator landing door strength testing device according to claim 1, characterized in that: The fixed rod (401) has a square hole at the end away from the door frame (1), and a guide wheel is provided in the square hole. A guide wheel is provided at the bottom of the fixed block (405), and the traction rope (404) is in contact with both the guide wheel and the guide wheel.

4. The elevator landing door strength testing device according to claim 1, characterized in that: The door frame (1) is provided with a fixing device (5), which includes a straight plate (501). The straight plate (501) is slidably installed on the inner and outer walls of the door frame (1). A grab plate (502) is fixedly installed on the top of the straight plate (501). A long rod (503) is slidably installed inside the door frame (1). A triangular block (506) is fixedly installed on the surface of the long rod (503). A crossbar (504) is slidably installed inside the door frame (1). A triangular plate (505) is fixedly installed on the surface of the crossbar (504).

5. The elevator landing door strength testing device according to claim 1, characterized in that: A triangular connecting block is fixedly installed on the side of the door frame (1) away from the fixed frame (2), and a right-angle plate is slidably installed on the bottom of the door frame (1).

6. The elevator landing door strength testing device according to claim 1, characterized in that: A motor is provided on the side of the fixed plate (3) away from the turntable (407), and the turntable (407) is fixedly installed at the output end of the motor.

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