Metro handrail rigidity testing device

Abstract

The utility model provides a subway handrail rigidity testing device which comprises a bottom bearing assembly, a top bearing assembly, a switching supporting assembly, a bottom matching assembly, a top matching assembly and a pushing and pressing force application assembly. According to the subway handrail rigidity testing device, a containing space capable of containing a subway handrail is defined by a bottom frame, a top frame and an adapting stand column, a bottom adapting assembly composed of an adapting bottom frame and an adapting bottom column is arranged on the bottom frame, and a top adapting assembly composed of an adapting top beam and an adapting top column is arranged on the top frame; the vertical frames at the two ends of the subway handrail can be fixed to the matched connection bottom columns through connecting bolts respectively, the vertical frames at the two ends of the subway handrail and a cross rod in the middle of the subway handrail can be fixed to the matched connection top columns through connecting bolts respectively, and the universality and flexibility of the testing process can be improved; and the stress condition in actual use can be simulated, so that the rigidity of the armrest can be accurately tested.

Description

Technical Field

[0001] This utility model relates to testing equipment, and more particularly to a device for testing the stiffness of subway handrails. Background Technology

[0002] The design goals of subway handrails include providing robust support and ensuring passenger safety and comfort while walking in the carriage. Handrails need to be able to withstand the weight of passengers and provide stable support, while ensuring comfort and safety during use. During high-speed subway travel, if handrails detach or fasteners loosen, it could cause safety accidents and significant losses for passengers. Therefore, the development of stiffness testing technology is crucial to ensuring passenger safety and comfort. Patent document CN208736667U discloses a handrail testing device, which includes a support platform, a pressure application unit, and a drive unit. The support platform is used to place the handrail to be tested. The drive unit is fixed on the support platform and includes a lifting motor, a lead screw, and a guide rail. The lifting motor moves up and down along the lead screw to drive the pressure application unit to move up and down along the guide rail. The pressure application unit includes a bracket, a fixed handle, a cylinder, a sensor, and a handrail loading module. One end of the bracket is connected to the drive unit and moves up and down along the guide rail; the other end is connected to the fixed handle. The fixed handle applies force to the handrail loading device through the cylinder, applying force to the handrail to be tested. This force is fed back to the device through the sensor. However, this testing device is incompatible with the structure of subway handrails, has low integration, requires auxiliary accessories during testing, has low testing efficiency, and is prone to equipment errors, resulting in unreliable results. Therefore, it is necessary to optimize its structure to overcome these shortcomings. Utility Model Content

[0003] The purpose of this invention is to provide a subway handrail stiffness testing device to improve testing efficiency and increase the reliability of test results.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A subway handrail stiffness testing device, comprising:

[0006] A bottom support assembly having an assembly space;

[0007] The top support component corresponds to the bottom support component in position, has an assembly space inside, and encloses the subway handrail receiving space between the top support component and the bottom support component;

[0008] A transition support assembly is located between the bottom support assembly and the top support assembly, connecting the bottom support assembly and the top support assembly, and supporting the top support assembly.

[0009] A bottom mounting component is installed on the bottom support component and is adapted to the shape of the bottom of the subway handrail. The bottom of the subway handrail can be installed on the bottom mounting component and positioned by the bottom mounting component.

[0010] A top mounting component is installed on the top support component and is adapted to the shape of the top of the subway handrail. The top of the subway handrail can be installed on the top mounting component and positioned by the top mounting component.

[0011] A pushing force application component is installed on the transition support component and cooperates with the side of the subway handrail. The pushing force application component applies a pushing force to the side of the subway handrail to test its stiffness.

[0012] Specifically, the bottom support components include:

[0013] The bottom frame is formed by enclosing metal rods and arranged laterally.

[0014] The top support components include:

[0015] The top frame, which is formed by enclosing metal rods and arranged laterally, is located above the bottom frame and encloses the space between the bottom frame and the top frame to accommodate the subway handrail.

[0016] The adapter support components include:

[0017] The transition columns are provided in a set. Each transition column is made of metal and arranged vertically. Its bottom is connected to the bottom frame and its top is connected to the top frame. The transition columns support the top frame.

[0018] The bottom mounting components include:

[0019] The mounting base consists of a pair, each formed by metal rods and installed at both ends of the bottom frame.

[0020] The matching base column is provided in two sets. Each set of matching base columns is made of metal column and is installed on the top of the bottom frame and protrudes upward from the bottom frame. The uprights at both ends of the subway handrail can be fixed to the matching base column by connecting bolts.

[0021] Top-mounted components include:

[0022] The top beam is made of metal rods and is arranged in the transverse direction, with its two ends connected to the top frame respectively.

[0023] The matching top column is provided in a set. Each matching top column is made of metal column and installed at the bottom of the matching top beam. They are arranged sequentially along the length of the matching top beam and protrude downwards from the matching top beam. The uprights at both ends of the subway handrail and the crossbar in the middle can be fixed to the matching top column by connecting bolts.

[0024] The pushing force application component includes:

[0025] The push-press electric cylinder has two sets. Each set of push-press electric cylinders is installed on the adapter column through the adapter structure and abuts against the uprights at both ends of the subway handrail. The push-press electric cylinder applies a pushing force to the uprights.

[0026] In one embodiment of this utility model, the adapter column is also provided with an infrared displacement sensor and a pressure sensor, which correspond to the position of the frame and can sense the deformation and stress of the frame.

[0027] The advantages of this utility model are:

[0028] This subway handrail stiffness testing device forms a space for placing subway handrails by enclosing a bottom frame, a top frame, and connecting columns. A bottom mounting assembly consisting of a mounting base and mounting columns is installed on the bottom frame, and a top mounting assembly consisting of a mounting top beam and mounting columns is installed on the top frame. This allows it to accommodate subway handrails of different shapes and sizes. The uprights at both ends of the handrail can be fixed to the mounting columns with connecting bolts, and the uprights at both ends and the crossbar in the middle of the handrail can be fixed to the mounting columns with connecting bolts, ensuring stability during testing and improving the versatility and flexibility of the testing process. The pushing force application component applies a pushing force to the sides of the handrail through a pushing electric cylinder, simulating the stress conditions in actual use, thus accurately testing the stiffness of the handrail. Infrared displacement sensors and pressure sensors installed on the connecting columns can monitor the deformation and stress of the handrail in real time, further improving the accuracy of the test. Attached Figure Description

[0029] Figure 1 This is one of the schematic diagrams of the operating state of the subway handrail stiffness testing device proposed in this utility model;

[0030] Figure 2 This is the second schematic diagram of the operating status of the testing device;

[0031] Figure 3 This is the third schematic diagram of the operating status of the testing device;

[0032] Figure 4 This is the fourth schematic diagram of the operating status of the testing device;

[0033] Figure 5 This is the fifth schematic diagram of the operating status of the testing device. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0035] like Figures 1-5 As shown, the subway handrail stiffness testing device proposed in this utility model includes a bottom bearing component, a top bearing component, a transition support component, a bottom mating component, a top mating component, and a pushing force application component. The bottom bearing component has an assembly space, and the top bearing component corresponds to the bottom bearing component in position, with its interior also having an assembly space. The top and bottom bearing components enclose a subway handrail accommodating space. The transition support component is located between the bottom and top bearing components, connecting the bottom and top bearing components and applying force to the top... The load-bearing component provides support, the bottom fitting component is installed on the bottom load-bearing component and is adapted to the shape of the bottom of the subway handrail. The bottom of the subway handrail can be installed on the bottom fitting component and positioned by the bottom fitting component. The top fitting component is installed on the top load-bearing component and is adapted to the shape of the top of the subway handrail. The top of the subway handrail can be installed on the top fitting component and positioned by the top fitting component. The pushing force application component is installed on the transition support component and cooperates with the side of the subway handrail. The pushing force application component applies a pushing force to the side of the subway handrail to test its rigidity.

[0036] In this embodiment, the bottom support component includes a bottom frame 100, which is formed by enclosing metal rods and arranged laterally.

[0037] The top support component includes a top frame 200, which is formed by enclosing metal rods and arranged laterally. It is located above the bottom frame and encloses the space between the bottom frame and the top frame to accommodate the subway handrail.

[0038] The transition support assembly includes a transition column 300. A set of transition columns is provided. Each transition column is made of metal column and arranged vertically. Its bottom is connected to the bottom frame and its top is connected to the top frame. The transition column supports the top frame.

[0039] The bottom mounting assembly includes a mounting base frame 410 and a mounting base column 420. There is a pair of mounting base frames, each of which is formed by metal rods and is installed at both ends of the bottom frame. There are two sets of mounting base columns, each set of which is made of metal columns and is installed at the top of the bottom frame and protrudes upwards from the bottom frame. The uprights at both ends of the subway handrail can be fixed to the mounting base columns by connecting bolts.

[0040] The top mounting assembly includes a mounting beam 510 and a mounting column 520. The mounting beam is made of metal rods and is arranged horizontally. Its two ends are respectively connected to the top frame. There is a set of mounting columns. Each mounting column is made of metal column and is installed at the bottom of the mounting beam. They are arranged sequentially along the length of the mounting beam and protrude downwards from the mounting beam. The uprights at both ends of the subway handrail and the crossbar in the middle can be fixed to the mounting columns by connecting bolts.

[0041] The pushing force application component includes a pushing electric cylinder 600. There are two sets of pushing electric cylinders. Each set of pushing electric cylinders is installed on the transition column through a transition structure and abuts against the uprights at both ends of the subway handrail. The pushing electric cylinder applies a pushing force to the uprights. The structure of the pushing electric cylinder adopts existing technology.

[0042] In this embodiment, the adapter column is also equipped with an infrared displacement sensor and a pressure sensor, which correspond to the position of the frame and can sense the deformation and stress of the frame. The structure of the infrared displacement sensor and the pressure sensor adopts the existing technology.

[0043] In the description of this utility model, it should be noted that when terms such as "upper," "lower," "inner," "outer," "left," and "right" appear to indicate orientation or positional relationships, they should be understood as being based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product of this utility model is in use, or the orientation or positional relationships commonly understood by those skilled in the art. These terms are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, when terms such as "first" and "second" appear, they are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, it should also be noted that unless otherwise explicitly specified and limited, terms such as "installation," "setting," and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A device for testing the stiffness of subway handrails, characterized in that, include: A bottom support assembly having an assembly space; The top support component corresponds to the bottom support component in position, has an assembly space inside, and encloses the subway handrail receiving space between the top support component and the bottom support component; A transition support assembly is located between the bottom support assembly and the top support assembly, connecting the bottom support assembly and the top support assembly, and supporting the top support assembly. A bottom mounting component is installed on the bottom support component and is adapted to the shape of the bottom of the subway handrail. The bottom of the subway handrail can be installed on the bottom mounting component and positioned by the bottom mounting component. A top mounting component is installed on the top support component and is adapted to the shape of the top of the subway handrail. The top of the subway handrail can be installed on the top mounting component and positioned by the top mounting component. The pushing force application component is installed on the transition support component and cooperates with the side of the subway handrail. The pushing force application component applies a pushing force to the side of the subway handrail.

2. The subway handrail stiffness testing device according to claim 1, characterized in that, The bottom support components include: The bottom frame is formed by enclosing metal rods and arranged laterally.

3. The subway handrail stiffness testing device according to claim 2, characterized in that, The top support components include: The top frame, which is formed by enclosing metal rods and arranged laterally, is located above the bottom frame and encloses the space between the bottom frame and the top frame to accommodate the subway handrail.

4. The subway handrail stiffness testing device according to claim 3, characterized in that, The adapter support components include: The transition column is provided in a set. Each transition column is made of metal column and arranged vertically. Its bottom is connected to the bottom frame and its top is connected to the top frame.

5. The subway handrail stiffness testing device according to claim 3, characterized in that, The bottom mounting components include: The mounting base consists of a pair, each formed by metal rods and installed at both ends of the bottom frame. The mating base column is provided in two sets. Each set of mating base columns is made of metal column and is installed on the top of the bottom frame and protrudes upward from the bottom frame.

6. The subway handrail stiffness testing device according to claim 3, characterized in that, Top-mounted components include: The top beam is made of metal rods and is arranged in the transverse direction, with its two ends connected to the top frame respectively. The mating top column is provided in a set. Each mating top column is made of metal column and installed at the bottom of the mating top beam. They are arranged sequentially along the length of the mating top beam and protrude downwards from the mating top beam.

7. The subway handrail stiffness testing device according to claim 3, characterized in that, The pushing force application component includes: The push-press electric cylinder is provided in two sets. Each set of push-press electric cylinders is installed on the adapter column through the adapter structure and abuts against the uprights at both ends of the subway handrail.

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