A test device for torsional durability of a hanging ring of a subway handrail

Abstract

The utility model discloses a kind of hoisting ring composition torsional durability testing device for subway handrails, including a support frame, the inner top surface of support frame is provided with a simulated handrail;A torsion mechanism is provided on the inner bottom surface of support frame, a force sensor is provided on torsion mechanism, and the force sensor is rotatably driven by torsion mechanism;A fixed tool is provided on force sensor, after being fixed between the measured hoisting ring by the cooperation of fixed tool and simulated handrail, the measured handrail hoisting ring is driven by torsion mechanism to carry out torsional durability test;It further includes a control system for controlling the device, and the torsion mechanism and force sensor are electrically connected with the control system.The utility model realizes the automatic torsion of the measured handrail hoisting ring, greatly shortens test time, reduces cost, realizes the real-time monitoring and display of the bearing capacity of the measured handrail hoisting ring, and ensures that test result is accurate and reliable.

Description

Technical Field

[0001] This utility model belongs to the field of handrail testing technology, specifically, it relates to a torsional durability testing device for the hanging rings of subway handrails. Background Technology

[0002] In the subway operation system, handrails, including the hanging rings, are crucial components ensuring passenger safety and comfort. Their safety, durability, and compliance with industry standards and regulations directly impact the interests of passengers and the overall quality of subway operations. As the core of urban public transportation, the subway carries a massive number of passengers daily. During train starts, braking, turns, and operation, the hanging rings are frequently subjected to forces from passengers' gripping and twisting. These forces not only vary in direction and magnitude but also occur at extremely high frequencies. Under prolonged exposure to such conditions, various components of the hanging rings, such as connectors, the ring body itself, and the connection points to the handrail, may develop safety hazards due to fatigue and wear.

[0003] If the handrail assembly becomes loose or breaks, passengers are highly likely to lose their balance and fall while gripping it, potentially leading to more serious accidents and posing a serious threat to their lives. Furthermore, damage to the handrail assembly will disrupt the normal operation of subway trains, increase maintenance costs and downtime, and reduce the efficiency and service quality of subway operations. Therefore, to ensure the stable and reliable operation of subway handrail assemblies in actual use, comprehensive and rigorous durability testing of the manufactured handrail assemblies is crucial.

[0004] Traditional methods for testing the torsional durability of handrail clasps often rely on prolonged actual use or the use of robotic arms. The former is time-consuming, labor-intensive, and lacks accuracy, while the latter is prohibitively expensive. Therefore, it is necessary to design a torsional durability testing device for subway handrail clasps to effectively address these technical problems. Utility Model Content

[0005] In order to solve the problems existing in the prior art, this utility model aims to provide a torsional durability testing device for the hanging rings of subway handrails, so as to achieve rapid and accurate torsional durability testing of the handrail hanging rings while reducing testing costs.

[0006] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0007] A torsional durability testing device for a subway handrail using a hanging ring includes a support frame with a simulated handrail mounted on its inner top surface. A torsion mechanism is mounted on the inner bottom surface of the support frame, and a force sensor is mounted on the torsion mechanism, which drives the force sensor to rotate. A fixing fixture is mounted on the force sensor, and the hanging ring to be tested is fixed between the fixing fixture and the simulated handrail. The torsion mechanism then drives the hanging ring to perform a torsional durability test. The device also includes a control system, and the torsion mechanism and the force sensor are electrically connected to the control system.

[0008] Furthermore, the simulated handrail includes a horizontal bar, with a mounting base at each end of the horizontal bar.

[0009] Furthermore, the crossbar is provided with threaded holes.

[0010] Furthermore, the torsion mechanism includes a torsion module, which is mounted on the inner bottom surface of the support frame via a fixed base.

[0011] Furthermore, the torsion module includes a rotary cylinder, which is connected to a solenoid valve via a corresponding pipe.

[0012] Furthermore, the fixing fixture includes a connecting plate, on which U-bolts are provided.

[0013] Furthermore, the control system includes a force value monitor and a controller.

[0014] The beneficial effects of this utility model are as follows: This utility model realizes automatic twisting of the handrail ring under test, which greatly shortens the test time and reduces the cost. At the same time, it realizes real-time monitoring and display of the load-bearing capacity of the handrail ring under test, ensuring that the test results are accurate and reliable.

[0015] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of the device of this utility model;

[0018] Figure 2 This is a schematic diagram of the power-off control system of this utility model.

[0019] The following are the labels in the diagram: 1. Support frame; 2. Simulated handrail; 3. Torsion mechanism; 4. Force sensor; 5. Fixture; 6. Control system; 21. Crossbar; 22. Mounting base; 31. Torsion module; 32. Fixture; 311. Rotary cylinder; 312. Solenoid valve; 51. Connecting plate; 52. U-bolt; 61. Force value monitor; 62. Controller. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] It should be noted that all directional indicators (such as up, down, left, right, front, back, upper end, lower end, top, bottom, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0022] See Figure 1 As shown (labeled A in the figure, representing the tested hanging ring), a torsional durability testing device for subway handrail hanging rings includes a support frame 1, which is composed of multiple long strip connecting rods spliced ​​together to form an overall rectangular box shape. This structural design gives the support frame 1 excellent stability and load-bearing capacity. A simulated handrail 2 is provided on the inner top surface of the support frame 1. A torsion mechanism 3 is provided on the inner bottom surface of the support frame 1, and a force sensor 4 is provided on the torsion mechanism 3. The torsion mechanism 3 can drive the force sensor 4 to rotate. A fixing fixture 5 is provided on the force sensor 4. The fixing fixture 5 and the simulated handrail 2 cooperate to fix the hanging ring under test between them, and the torsion mechanism 3 drives the handrail hanging ring under test to perform torsional durability testing. It also includes a control system 6 for controlling the device. The torsion mechanism 3 and the force sensor 4 are electrically connected to the control system 6.

[0023] Further, see Figure 2 As shown (label A in the figure represents the tested lifting ring), in this embodiment, the simulated handrail 2 includes a horizontal bar 21, and a mounting seat 22 is provided at each end of the horizontal bar 21; during installation, after the lifting strap of the handrail to be tested is sleeved on the horizontal bar 21, the horizontal bar 21 is fixed to the inner top surface of the support frame 1 through the mounting seat 22.

[0024] Furthermore, in this embodiment, the crossbar 21 is provided with threaded holes (not shown in the figure); after the sling of the handrail ring to be tested is sleeved on the crossbar 21, the sling is connected to the crossbar 21 by a pressure plate or a connecting piece on the sling itself, and then the sling is locked to the crossbar 21 by the corresponding locking bolt engaging with the threaded hole, thereby achieving a fixed connection between the handrail ring to be tested and the crossbar 21, preventing the handrail ring to be tested from sliding back and forth on the crossbar 21 during testing; of course, it is not limited to the above setting method. In actual setting, the sling may not be fixed. The specific method used can be selected according to actual needs.

[0025] Further, see Figure 1 As shown, in this embodiment, the torsion mechanism 3 includes a torsion module 31. During installation, the torsion module 31 is mounted on the inner bottom surface of the support frame 1 via a fixing seat 32; wherein, in this embodiment, see... Figure 2 As shown, the torsion module 31 includes a rotary cylinder 311, which is connected to a solenoid valve 312 through a corresponding pipe. During installation, the rotary cylinder 311 is mounted on the inner bottom surface of the support frame 1 through the fixing seat 32, and the solenoid valve 312 is directly fixed on the support frame 1 and is electrically connected to the control system 6 after fixing.

[0026] Further, see Figure 2 As shown, in this embodiment, the connecting mechanism 5 includes a connecting plate 51, on which a U-bolt 52 is provided; during installation, the connecting plate 51 is connected to the force sensor 4, and the handrail hanging ring body to be tested is connected to the connecting plate 51 through the U-bolt 52.

[0027] Further, see Figure 1 As shown, in this embodiment, the control system 6 includes a force value monitor 61 and a controller 62. When connected, the force value monitor 61 is connected to the force sensor 4, and the force value detected by the force sensor 4 is displayed in real time through the force value monitor 61, that is, the load-bearing force borne by the handrail ring under test is displayed in real time. The solenoid valve 312 is electrically connected to the controller 62, and the controller 62 controls the opening and closing of the solenoid valve 312, the number of opening and closing times, and the valve opening degree, thereby controlling the rotation speed and cycle number of the rotary cylinder 311.

[0028] The working principle of this utility model is as follows:

[0029] Before testing the handrail ring under test, the solenoid valve 312 is connected to the external air supply device through the corresponding air pipe; and after the handrail ring under test is connected to the crossbar 21, the handrail ring body under test is fixed to the connecting plate 51 by U-bolts 52.

[0030] When testing the handrail ring under test, the rotation angle is first adjusted by the angle adjustment device of the rotary cylinder 311, and then the speed and number of cycles are set by the controller 62. The device is then started. At this time, the rotary cylinder 311 drives the fixed fixture 5 to rotate through the force sensor 4, thereby driving the handrail ring under test to reciprocate and twist, thus realizing the torsional durability test of the handrail ring under test.

[0031] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A torsional durability testing device for a subway handrail assembly consisting of hanging rings, comprising a support frame (1), characterized in that: A simulated handrail (2) is provided on the inner top surface of the support frame (1); a torsion mechanism (3) is provided on the inner bottom surface of the support frame (1), and a force sensor (4) is provided on the torsion mechanism (3). The force sensor (4) can be driven to rotate through the torsion mechanism (3); a fixing fixture (5) is provided on the force sensor (4). After the fixing fixture (5) and the simulated handrail (2) are used together, the test ring is fixed between the two. The torsion mechanism (3) drives the test handrail ring to perform a torsion durability test; a control system (6) is also included for control by a device. The torsion mechanism (3) and the force sensor (4) are electrically connected to the control system (6).

2. The torsional durability testing device for subway handrail hanging rings according to claim 1, characterized in that: The simulated handrail (2) includes a crossbar (21), and a mounting base (22) is provided at each end of the crossbar (21).

3. The torsional durability testing device for subway handrail hanging rings according to claim 2, characterized in that: The crossbar (21) is provided with a threaded hole.

4. The torsional durability testing device for subway handrail hanging rings according to claim 1, characterized in that: The torsion mechanism (3) includes a torsion module (31), which is mounted on the inner bottom surface of the support frame (1) via a fixed seat (32).

5. The torsional durability testing device for subway handrail hanging rings according to claim 4, characterized in that: The torsion module (31) includes a rotary cylinder (311), which is connected to a solenoid valve (312) through a corresponding pipe.

6. The torsional durability testing device for subway handrail hanging rings according to claim 1, characterized in that: The fixing fixture (5) includes a connecting plate (51) on which U-bolts (52) are provided.

7. The torsional durability testing device for subway handrail hanging rings according to claim 1, characterized in that: The control system (6) includes a force value monitor (61) and a controller (62).

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