An elevator landing door strength testing device

Abstract

This utility model belongs to the technical field of elevator landing door testing equipment, specifically relating to an elevator landing door strength testing device. It includes a main platform, on which an elevator door body is placed. A clamping and fixing assembly is located on the top of the main platform. Multiple testing devices are also located on the top of the main platform, each including a sliding frame. The bottom of the sliding frame is slidably connected to the top of the main platform. A pressure-applying assembly is located on the top of the inner wall of the sliding frame. A suction-pressure control ring is fixedly connected to the moving end of the pressure-applying assembly. The pressure-applying assembly includes an electric telescopic rod, the fixed end of which is fixedly connected to the top of the inner wall of the sliding frame. This utility model solves the problem that existing testing devices lack a limiting control assembly, leading to easy diffusion of the indented surface of the door panel during pressure testing, resulting in an uncontrollable testing range and ultimately reduced testing accuracy. This invention ensures the accuracy of the testing.

Description

Technical Field

[0001] This utility model belongs to the technical field of elevator landing door testing equipment, specifically relating to an elevator landing door strength testing device. Background Technology

[0002] Elevator landing doors are a crucial component of elevator systems, primarily serving to protect the elevator shaft and prevent passengers from accidentally falling or entering dangerous areas. With increasing elevator usage, the strength and safety of landing doors have become a major concern. The strength of elevator landing doors directly affects their safety under external impacts or abnormal loads; therefore, testing the strength of landing doors to ensure they meet relevant safety standards is essential for safe elevator operation. Traditional methods for testing elevator landing door strength mainly rely on periodic manual inspections and visual assessments, or on static or dynamic load tests. These methods often have limitations, such as subjective results, high workload, long testing cycles, and the inability to monitor in real time. Therefore, there is an urgent need to develop a device capable of real-time, accurate, and automated testing of elevator landing door strength.

[0003] Patent publication number CN112444418A discloses an elevator landing door strength testing device, including a main beam, a tie rod, an electric pressurization system, and an operation display system. It uses a stepper motor in conjunction with a deceleration and reversing mechanism for automatic loading and adopts stepless automatic loading technology, which ensures continuous and stable loading. The loading amount is controlled by the number of pulses to calculate the actual deformation. The device automatically stops when the set value is reached, which increases the accuracy of the test.

[0004] However, the current elevator landing door strength testing device has the following problems: the existing testing device does not have a limiting control component, which makes the indentation surface of the door panel very easy to spread during pressure testing, resulting in an uncontrollable testing range. Therefore, we propose an elevator landing door strength testing device. Utility Model Content

[0005] The purpose of this invention is to provide an elevator landing door strength testing device that can solve the problem that existing testing devices in related technologies do not have limiting control components, which makes the indented surface of the door panel easily spread during pressure testing, resulting in an uncontrollable testing range.

[0006] The specific technical solution adopted by this utility model is as follows:

[0007] An elevator landing door strength testing device includes a main platform, on which an elevator door body is placed. A clamping and fixing assembly is provided on the top of the main platform. A multi-position testing device is provided on the top of the main platform. The multi-position testing device includes a sliding frame. The bottom of the sliding frame is slidably connected to the top of the main platform. A pressure applying assembly is provided on the top of the inner wall of the sliding frame. An adsorption pressure control ring is fixedly connected to the moving end of the pressure applying assembly.

[0008] Preferably, the pressure application component includes an electric telescopic rod, the fixed end of which is fixedly connected to the top of the inner wall of the sliding frame, the telescopic end of which is fixedly connected to a pressure-isolating protective plate, the bottom of which is fixedly connected to a pressure-applying cone, an extension rod fixedly connected to the outer wall of the pressure-isolating protective plate, the bottom of which is fixedly connected to an elastic telescopic rod, the top of which is fixedly connected to the telescopic end of the elastic telescopic rod, and the telescopic end of the elastic telescopic rod is the moving end of the pressure application component.

[0009] Preferably, the clamping and fixing assembly includes a vertical plate, the bottom of which is fixedly connected to the top of the main body platform, and an electric push rod is fixedly connected to the side of the vertical plate near the elevator door body. The telescopic end of the electric push rod is fixedly connected to a fixing frame.

[0010] Preferably, the bottom of the pressure cone is cone-shaped, and the top of the elevator door body is located on the movement trajectory of the cone-shaped surface at the bottom of the pressure cone.

[0011] Preferably, the bottom of the adsorption pressure control ring is a smooth surface, and the top of the elevator door body is located on the movement trajectory of the smooth surface at the bottom of the adsorption pressure control ring.

[0012] Preferably, a precision auxiliary device is provided on the outer wall of the extension rod. The precision auxiliary device includes a synchronization ring, which is fixedly connected to the outer wall of the extension rod. A transverse plate is fixedly connected to the outer wall of the synchronization ring. An extension column is fixedly connected to the bottom of the transverse plate, and an anti-lifting pad is fixedly connected to the bottom of the extension column.

[0013] Preferably, the anti-lift pad is made of a highly tough and soft material, and the top of the elevator door body is located on the movement trajectory of the bottom of the anti-lift pad.

[0014] The technical effects achieved by this utility model are as follows:

[0015] This invention utilizes a multi-position detection device to coordinate the sliding frame, electric telescopic rod, pressure-isolating protective plate, pressure cone, extension rod, elastic telescopic rod, and adsorption pressure control ring. The downward movement of the telescopic end of the electric telescopic rod drives the pressure-isolating protective plate downwards, which in turn drives the pressure cone downwards. Simultaneously, the downward movement of the pressure-isolating protective plate drives the extension rod downwards, which in turn drives the elastic telescopic rod downwards, which in turn drives the adsorption pressure control ring downwards. When the adsorption pressure control ring moves downwards and comes into contact with the elevator door body, its strong magnetic adsorption properties ensure that its bottom surface is in close contact with the top surface of the elevator door body. When the pressure cone applies pressure to the elevator door body, the close adsorption contact between the adsorption pressure control ring and the elevator door body limits the pressure range of the elevator door body, thus preventing the diffusion of the indented surface of the door panel during detection, which would otherwise lead to an uncontrollable detection range.

[0016] This invention utilizes a precise auxiliary device to coordinate the synchronous ring, transverse plate, extension column, and anti-lifting pad. The downward movement of the synchronous ring drives the transverse plate downward, which in turn drives the extension column downward, which in turn drives the anti-lifting pad downward. This ensures that the anti-lifting pad is in close contact with the elevator door body. When the pressure cone is used to test the elevator door body, the door body is prone to uncontrollable situations such as edge lifting due to localized pressure. The anti-lifting pad can apply pressure to a wider range of the elevator door body, thereby further ensuring the accuracy of the test results. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the entire utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the fixed clamping frame of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the sliding frame of this utility model;

[0020] Figure 4 This is a utility model Figure 3 A magnified schematic diagram of the structure at point A in the middle;

[0021] Figure 5 This is a schematic diagram of the structure of the anti-lifting pad of this utility model.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Main platform; 2. Elevator door body; 3. Clamping and fixing components; 31. Vertical plate; 32. Electric push rod; 33. Fixed clamping frame; 4. Multi-position detection device; 41. Sliding frame; 42. Electric telescopic rod; 43. Pressure isolation protection plate; 44. Pressure cone; 45. Extension rod; 46. Elastic telescopic rod; 47. Adsorption pressure control ring; 5. Precision auxiliary device; 51. Synchronization ring; 52. Horizontal plate; 53. Extension column; 54. Anti-lift pad. Detailed Implementation

[0024] 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.

[0025] like Figure 1-5 As shown, an elevator door strength testing device includes a main platform 1, an elevator door body 2 placed on the top of the main platform 1, a clamping and fixing component 3 provided on the top of the main platform 1, and a multi-position testing device 4 provided on the top of the main platform 1. The multi-position testing device 4 includes a sliding frame 41, the bottom of which is slidably connected to the top of the main platform 1. A pressure application component is provided on the top of the inner wall of the sliding frame 41, and an adsorption pressure control ring 47 is fixedly connected to the moving end of the pressure application component. The adsorption pressure control ring 47 is made of a strong magnetic material.

[0026] The pressure application component includes an electric telescopic rod 42. The fixed end of the electric telescopic rod 42 is fixedly connected to the top of the inner wall of the sliding frame 41. The telescopic end of the electric telescopic rod 42 is fixedly connected to a pressure-isolating protective plate 43. The bottom of the pressure-isolating protective plate 43 is fixedly connected to a pressure cone 44. An extension rod 45 is fixedly connected to the outer wall of the pressure-isolating protective plate 43. The bottom of the extension rod 45 is fixedly connected to an elastic telescopic rod 46. The top of the adsorption pressure control ring 47 is fixedly connected to the telescopic end of the elastic telescopic rod 46. The telescopic end of the elastic telescopic rod 46 is set as the moving end of the pressure application component, and the moving end is used to transmit power to the component.

[0027] The clamping and fixing assembly 3 includes a vertical plate 31. The bottom of the vertical plate 31 is fixedly connected to the top of the main body 1. An electric push rod 32 is fixedly connected to the side of the vertical plate 31 near the elevator door body 2. A fixed clamping frame 33 is fixedly connected to the telescopic end of the electric push rod 32. This is existing technology and will not be elaborated further.

[0028] The bottom of the pressure cone 44 is tapered, and the top of the elevator door body 2 is located on the movement trajectory of the tapered surface at the bottom of the pressure cone 44. The tapered design allows the component to apply pressure to the workpiece more effectively.

[0029] The bottom of the adsorption pressure control ring 47 is a smooth surface, and the top of the elevator door body 2 is located on the movement trajectory of the smooth surface at the bottom of the adsorption pressure control ring 47. The smooth surface can reduce wear between components.

[0030] Based on the above structure, before starting the inspection, the staff places the elevator door body 2 on the main platform 1. Then, the staff activates the electric push rod 32 through the external controller. The telescopic end of the electric push rod 32 drives the fixed clamping frame 33 to move closer to the elevator door body 2, thereby limiting the position of the elevator door body 2. When the inspection is about to begin, the staff first slides the sliding frame 41 to the designated position. Then, the staff activates the electric telescopic rod 42 through the external controller. The telescopic end of the electric telescopic rod 42 moves downward, causing the pressure isolation protection plate 43 to move downward. The downward movement of the pressure isolation protection plate 43 causes the pressure applying cone 44 to move downward. Simultaneously, the pressure isolation protection plate 43 moves downward, causing the extension rod 45 to move downward. The extension rod 45 moves downward, causing the elastic telescopic rod 46 to move downward. The elastic telescopic rod 46 moves downward, causing the adsorption pressure control ring 47 to move downward. When the adsorption pressure control ring 47 moves downward and comes into contact with the elevator door body 2, the bottom surface of the adsorption pressure control ring 47 is in close contact with the top surface of the elevator door body 2 due to its own strong magnetic adsorption characteristics. When the pressure cone 44 applies pressure to the elevator door body 2, the pressure range of the elevator door body 2 is limited because the adsorption pressure control ring 47 is in close adsorption contact with the elevator door body 2. This prevents the pressure indentation of the door panel from spreading during the test, thus avoiding uncontrollable detection range.

[0031] like Figure 1-5 As shown, a precision auxiliary device 5 is provided on the outer wall of the extension rod 45. The precision auxiliary device 5 includes a synchronization ring 51, which is fixedly connected to the outer wall of the extension rod 45. A transverse plate 52 is fixedly connected to the outer wall of the synchronization ring 51. An extension column 53 is fixedly connected to the bottom of the transverse plate 52. An anti-lifting pad 54 is fixedly connected to the bottom of the extension column 53. The anti-lifting pad 54 can absorb and disperse the deformation force of the workpiece after it is compressed.

[0032] The anti-lift pad 54 is made of a high-toughness soft material. The top of the elevator door body 2 is located on the movement trajectory of the bottom of the anti-lift pad 54. The high-toughness soft material can prevent the workpiece from breaking due to excessive pressure from all sides during inspection.

[0033] According to the above-mentioned structure, the downward movement of the extension rod 45 drives the synchronous ring 51 to move downward, the downward movement of the synchronous ring 51 drives the transverse plate 52 to move downward, the downward movement of the transverse plate 52 drives the extension column 53 to move downward, and the downward movement of the extension column 53 drives the anti-lifting pad 54 to move downward, so that the anti-lifting pad 54 is in close contact with the elevator door body 2. When the pressure cone 44 tests the elevator door body 2, due to local pressure, the elevator door body 2 is prone to uncontrollable situations such as edge lifting. The anti-lifting pad 54 can apply pressure to the elevator door body 2 over a larger range, thereby further ensuring the accuracy of the test results.

[0034] 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. An elevator landing door strength testing device, comprising a main platform (1), an elevator door body (2) placed on top of the main platform (1), and a clamping and fixing assembly (3) provided on top of the main platform (1), characterized in that: The top of the main platform (1) is provided with a multi-position detection device (4), which includes a sliding frame (41). The bottom of the sliding frame (41) is slidably connected to the top of the main platform (1). The top of the inner wall of the sliding frame (41) is provided with a pressure-applying component, and the moving end of the pressure-applying component is fixedly connected with an adsorption pressure control ring (47).

2. The elevator landing door strength testing device according to claim 1, characterized in that: The pressure application component includes an electric telescopic rod (42), the fixed end of which is fixedly connected to the top of the inner wall of the sliding frame (41), the telescopic end of which is fixedly connected to a pressure-isolating protective plate (43), the bottom of which is fixedly connected to a pressure-applying cone (44), the outer wall of which is fixedly connected to an extension rod (45), the bottom of which is fixedly connected to an elastic telescopic rod (46), the top of which is fixedly connected to the telescopic end of the elastic telescopic rod (46), and the telescopic end of the elastic telescopic rod (46) is the moving end of the pressure application component.

3. The elevator landing door strength testing device according to claim 1, characterized in that: The clamping and fixing assembly (3) includes a vertical plate (31), the bottom of which is fixedly connected to the top of the main body platform (1). An electric push rod (32) is fixedly connected to the side of the vertical plate (31) near the elevator door body (2), and a fixed clamping frame (33) is fixedly connected to the telescopic end of the electric push rod (32).

4. The elevator landing door strength testing device according to claim 2, characterized in that: The bottom of the pressure cone (44) is cone-shaped, and the top of the elevator door body (2) is located on the movement trajectory of the cone-shaped surface at the bottom of the pressure cone (44).

5. The elevator landing door strength testing device according to claim 2, characterized in that: The bottom of the adsorption pressure control ring (47) is a smooth surface, and the top of the elevator door body (2) is located on the movement trajectory of the smooth surface at the bottom of the adsorption pressure control ring (47).

6. The elevator landing door strength testing device according to claim 2, characterized in that: A precision auxiliary device (5) is provided on the outer wall of the extension rod (45). The precision auxiliary device (5) includes a synchronization ring (51). The synchronization ring (51) is fixedly connected to the outer wall of the extension rod (45). A transverse plate (52) is fixedly connected to the outer wall of the synchronization ring (51). An extension column (53) is fixedly connected to the bottom of the transverse plate (52). An anti-lifting pad (54) is fixedly connected to the bottom of the extension column (53).

7. The elevator landing door strength testing device according to claim 6, characterized in that: The anti-lift pad (54) is made of a high-toughness soft material, and the top of the elevator door body (2) is located on the movement trajectory of the bottom of the anti-lift pad (54).

Images