Elevator landing door strength detection device

Abstract

The utility model relates to the technical field of elevator detection, in particular to an elevator landing door strength detection device which comprises a supporting frame, a traction assembly is installed on the supporting frame, a pulley is rotatably installed at the position, corresponding to the traction assembly, of the top of the supporting frame, and a cam is rotatably installed on the side, away from the traction assembly, of the top of the supporting frame. A swing rope is fixedly arranged at the bottom of the cam, and a pendulum bob is fixedly arranged at the end, away from the cam, of the swing rope. Through the arrangement of a bump, a trigger assembly and a blocking assembly, after the pendulum bob collides with the landing door and rebounds, a cam is driven to rotate through a pull rope, so that the bump presses a trigger button for the second time, an electric push rod is automatically controlled to extend, a blocking plate is pushed to slide upwards and block between the pendulum bob and the landing door, the pendulum bob is prevented from colliding with the landing door for many times, and the test accuracy is improved; and meanwhile, when the convex block presses the trigger button for the second time, the pendulum bob is rebounded by the landing door and is in a reverse swinging state, so that the barrier plate is accurately blocked between the pendulum bob and the landing door.

Description

Technical Field

[0001] This utility model relates to the field of elevator testing technology, and in particular to an elevator landing door strength testing device. Background Technology

[0002] Elevator landing door strength testing is an important part of elevator safety inspection. It aims to ensure the sturdiness of elevator landing doors and their ability to withstand external impacts. It is divided into static pressure testing and impact testing. The impact test applies dynamic loads through a pendulum or impact ball to test the landing door's impact resistance.

[0003] A strength testing device for elevator landing doors disclosed in Chinese patent CN221860132U solves the problem that when the pendulum is lifted from a high height, the instantaneous force during shearing is very large, and the worker is close to the strap when cutting, which can easily cause the strap to pull and injure the worker. However, according to the elevator landing door strength testing device provided by related technologies and existing technologies, the standard requires the test to be a single impact. However, the pendulum impact on the landing door will be bounced and thus generate multiple impacts, causing the measured values ​​of the landing door deformation, cracking, etc. to deviate from the true impact resistance. Moreover, repeated impacts will change the stress state at the impact point, affecting the accurate assessment of the structural integrity of the landing door. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art, solve the problems mentioned in the background art, and provide an elevator landing door strength detection device.

[0005] The purpose of this utility model is achieved through the following technical solution: an elevator landing door strength detection device, including a support frame, a traction component installed on the support frame, a pulley rotatably installed on the top of the support frame corresponding to the traction component, a cam rotatably installed on the top of the support frame away from the traction component, a swing rope fixedly provided at the bottom of the cam, a pendulum fixedly provided at the end of the swing rope away from the cam, a hanging ring fixedly provided at the bottom of the pendulum, a trigger component provided on the support frame above the cam, and a blocking component installed on the bottom of the support frame below the trigger component.

[0006] Preferably, the triggering component includes a protrusion slidably mounted on the top of the support frame, the protrusion being located directly above the cam, a push plate being fixedly mounted on the top of the protrusion, and a trigger button being fixedly mounted on the support frame above the push plate.

[0007] Preferably, the blocking assembly includes a crossbeam fixed to the bottom of the support frame, an electric push rod is fixedly provided at the middle position of the crossbeam, and a blocking plate is fixedly provided at the output end of the electric push rod.

[0008] Preferably, the traction assembly includes a spool rotatably mounted on the bottom of the support frame, a motor is fixedly mounted on the support frame at a position corresponding to the spool, a reel is fixedly provided at the middle position of the spool, a traction rope is wound on the reel, the traction rope passes over the pulley, and an automatic unhooking device is fixedly provided at the end of the traction rope away from the reel.

[0009] Preferably, the bottom of the protrusion is arc-shaped.

[0010] Preferably, the two ends of the baffle plate are fixedly provided with sliding sleeves, and the sliding sleeves are slidably connected to the support frame.

[0011] Beneficial effects:

[0012] This elevator landing door strength testing device, by setting up a protrusion, a trigger component, and a blocking component, causes the pendulum to bounce off the landing door and then rotate the cam via a pull rope. This causes the protrusion to press the trigger button a second time, automatically controlling the extension of the electric push rod and pushing the blocking plate to slide between the pendulum and the elevator landing door. This prevents the pendulum from hitting the landing door multiple times, improving the accuracy of the test and allowing the measured value to better reflect the true impact resistance of the landing door. At the same time, when the protrusion presses the trigger button a second time, the pendulum is bounced off the elevator landing door and is in a reverse swing state, so that the blocking plate can accurately block the pendulum between the pendulum and the elevator landing door. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the present invention in its first working state;

[0016] Figure 3 This utility model Figure 2 A magnified schematic diagram of the partial structure at point A in the middle;

[0017] Figure 4 This is a schematic diagram showing the working state of the barrier component of this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the second working state of this utility model;

[0019] Figure 6 This utility model Figure 5A magnified schematic diagram of the structure at point B in the middle.

[0020] In the diagram: 1. Support frame; 2. Traction assembly; 21. Motor; 22. Reel; 23. Reel; 24. Traction rope; 25. Automatic unhooking device; 3. Pulley; 4. Trigger assembly; 41. Protrusion; 42. Trigger button; 43. Push plate; 5. Cam; 6. Swing rope; 7. Pendulum; 8. Hanging ring; 9. Barrier assembly; 91. Crossbeam; 92. Electric push rod; 93. Sliding sleeve; 94. Blocking plate; 10. Elevator landing door; 11. Fixing frame. Detailed Implementation

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Additional aspects and advantages of this invention will be further set forth in the description which follows in conjunction with the accompanying drawings, and in part will be obvious from the description or may be learned by practice of the invention.

[0023] like Figures 1 to 6As shown, an elevator landing door strength testing device includes a support frame 1, a traction component 2 mounted on the support frame 1, a pulley 3 rotatably mounted on the top of the support frame 1 corresponding to the traction component 2, a cam 5 rotatably mounted on the top side of the support frame 1 away from the traction component 2, a swing rope 6 fixedly mounted at the bottom of the cam 5, a pendulum 7 fixedly mounted at the end of the swing rope 6 away from the cam 5, a hanging ring 8 fixedly mounted at the bottom of the pendulum 7, a trigger component 4 located above the cam 5 on the support frame 1, and a blocking component 9 mounted at the bottom of the support frame 1 below the trigger component 4. In use, the elevator landing door 10 is fixed by a fixing frame 11 to the side where the pendulum 7 is falling. First, the traction component 2 hooks the hanging ring 8 to pull the pendulum 7 up, then the hanging ring 8 is released. The pendulum 7 is released and allowed to fall freely, impacting the elevator landing door 10 to conduct an impact test. After impacting the elevator landing door 10, the pendulum 7 will bounce back and swing in the opposite direction. During the process from the impact of the pendulum 7 to the bounce, the pendulum 7 will pull the cam 5 back and forth through the pendulum rope 6, causing the tip of the cam 5 to push against the trigger component 4. When the trigger component 4 is pushed against the cam 5 a second time, it will control the blocking component 9 to work. At this time, the pendulum 7 is bounced back by the elevator landing door 10 and is in a reverse swinging state, so that the blocking component 9 blocks between the pendulum 7 and the elevator landing door 10, preventing the pendulum 7 from hitting the elevator landing door 10 multiple times, which would cause the measured value of the landing door deformation, cracking, etc. to deviate from the true impact resistance, thus improving the accuracy of the landing door impact test.

[0024] like Figure 1 and Figure 2 As shown, the traction assembly 2 includes a spool 22 rotatably mounted on the bottom of the support frame 1. A motor 21 is fixedly mounted on the support frame 1 at a position corresponding to the spool 22. A reel 23 is fixedly mounted in the middle of the spool 22. A traction rope 24 is wound on the reel 23. The traction rope 24 passes over the pulley 3. An automatic release device 25 is fixedly mounted at the end of the traction rope 24 away from the reel 23. First, the automatic release device 25 hooks the hanging ring 8. Then, the motor 21 drives the spool 22 to rotate the reel 23, winding up the traction rope 24. Thus, under the support and guidance of the pulley 3, the pendulum 7 is pulled up through the hanging ring 8. Then, the automatic release device 25 is controlled to release the hanging ring 8, releasing the pendulum 7, allowing the pendulum 7 to fall freely and impact the elevator landing door 10 for an impact test.

[0025] like Figures 1 to 6As shown, the trigger assembly 4 includes a protrusion 41 slidably mounted on the top of the support frame 1. The protrusion 41 is located directly above the cam 5. A push plate 43 is fixedly mounted on the top of the protrusion 41. A trigger button 42 is fixedly mounted on the support frame 1 above the push plate 43. The bottom of the protrusion 41 is arc-shaped. After the pendulum 7 hits the elevator landing door 10, it will bounce back and swing in the opposite direction. During the process from when the pendulum 7 hits the elevator landing door 10 to when it bounces back, the pendulum 7 will pull the cam 5 back and forth through the swing rope 6, causing the tip of the cam 5 to push the protrusion 41 twice. This causes the protrusion 41 to drive the push plate 43 to slide upward and press the trigger button 42. When the trigger button 42 is pressed for the second time, the blocking assembly 9 will automatically control the pendulum 7 to block it. At this time, the pendulum 7 is bounced back by the elevator landing door 10 and is in a reverse swinging state, thus accurately blocking the pendulum 7.

[0026] like Figures 1 to 5 As shown, the blocking assembly 9 includes a crossbeam 91 fixed to the bottom of the support frame 1. An electric push rod 92 is fixedly installed in the middle of the crossbeam 91. A blocking plate 94 is fixedly installed at the output end of the electric push rod 92. Sliding sleeves 93 are fixedly installed at both ends of the blocking plate 94. The sliding sleeves 93 are slidably connected to the support frame 1. The crossbeam 91 supports the extension of the electric push rod 92, which drives the blocking plate 94 to move upward under the guidance of the sliding sleeves 93. It blocks the pendulum 7 between the elevator landing door 10 and the pendulum 7, preventing the pendulum 7 from hitting the elevator landing door 10 multiple times, which would cause the measured values ​​of the landing door deformation, cracking, etc. to deviate from the true impact resistance, thus improving the accuracy of the landing door impact test. At the same time, the sliding sleeves 93 at both ends of the blocking plate 94 are slidably installed on the support frame 1, which can provide stable support for the blocking plate 94 and improve the blocking effect.

[0027] The work process is as follows:

[0028] S1: As Figure 1 As shown, when in use, the elevator landing door 10 is fixed to the side where the pendulum 7 falls by the fixing bracket 11. At this time, the automatic unhooking device 25 hooks the hanging ring 8 first.

[0029] S2: As Figure 1 and Figure 2 As shown, the motor 21 then drives the shaft 22 to rotate the reel 23, which in turn winds up the traction rope 24, thereby raising the pendulum 7 through the hanging ring 8 under the support and guidance of the pulley 3.

[0030] S3: As Figure 1 As shown, the automatic unhooking device 25 is then controlled to release the hanging ring 8, release the pendulum 7, and allow the pendulum 7 to fall freely and strike the elevator landing door 10 to conduct an impact test.

[0031] S4: As Figures 1 to 6As shown, after the pendulum 7 hits the elevator door 10, it will bounce back and swing in the opposite direction. During the process from when the pendulum 7 hits the elevator door 10 to when it bounces back, the pendulum 7 will pull the cam 5 back and forth through the swing rope 6, causing the tip of the cam 5 to push the protrusion 41 twice, thereby causing the protrusion 41 to drive the push plate 43 to slide upward and press the trigger button 42.

[0032] S5: As Figures 4 to 6 As shown, when the trigger button 42 is pressed twice, it will control the electric push rod 92 to extend under the support of the crossbeam 91, pushing the blocking plate 94 to move upward under the guidance of the sliding sleeve 93;

[0033] S6: As Figures 1 to 6 As shown, at this time, the pendulum 7 is rebounded by the elevator landing door 10 and is in a reverse swing state. The blocking plate 94 moves upward and blocks between the pendulum 7 and the elevator landing door 10, so as to prevent the pendulum 7 from hitting the elevator landing door 10 multiple times, which would cause the measured values ​​of the landing door deformation, cracking and other results to deviate from the true impact resistance, thus improving the accuracy of the landing door impact test.

[0034] The motor 21, automatic unhooking device 25, and electric push rod 92 are known technologies in this application, and therefore their specific structures and working principles are not described in detail.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A device for testing the strength of elevator landing doors, characterized in that: The system includes a support frame (1), on which a traction component (2) is mounted. A pulley (3) is rotatably mounted on the top of the support frame (1) at a position corresponding to the traction component (2). A cam (5) is rotatably mounted on the top of the support frame (1) away from the traction component (2). A swing rope (6) is fixedly provided at the bottom of the cam (5). A pendulum (7) is fixedly provided at the end of the swing rope (6) away from the cam (5). A hanging ring (8) is fixedly provided at the bottom of the pendulum (7). A trigger component (4) is provided on the support frame (1) above the cam (5). A blocking component (9) is installed on the bottom of the support frame (1) below the trigger component (4).

2. The elevator landing door strength testing device according to claim 1, characterized in that: The trigger assembly (4) includes a protrusion (41) slidably mounted on the top of the support frame (1). The protrusion (41) is located directly above the cam (5). A push plate (43) is fixedly provided on the top of the protrusion (41). A trigger button (42) is fixedly provided on the support frame (1) above the push plate (43).

3. The elevator landing door strength testing device according to claim 1, characterized in that: The blocking assembly (9) includes a crossbeam (91) fixed to the bottom of the support frame (1), an electric push rod (92) is fixedly provided at the middle position of the crossbeam (91), and a blocking plate (94) is fixedly provided at the output end of the electric push rod (92).

4. The elevator landing door strength testing device according to claim 1, characterized in that: The traction assembly (2) includes a spool (22) rotatably mounted on the bottom of the support frame (1). A motor (21) is fixedly mounted on the support frame (1) at a position corresponding to the spool (22). A reel (23) is fixedly provided in the middle of the spool (22). A traction rope (24) is wound on the reel (23). The traction rope (24) passes over the pulley (3). An automatic unhooking device (25) is fixedly provided at the end of the traction rope (24) away from the reel (23).

5. The elevator landing door strength testing device according to claim 2, characterized in that: The bottom of the protrusion (41) is arc-shaped.

6. The elevator landing door strength testing device according to claim 3, characterized in that: The two ends of the baffle plate (94) are fixedly provided with sliding sleeves (93), and the sliding sleeves (93) are slidably connected to the support frame (1).

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