Rigidity testing device for fastener

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By introducing probe devices and lateral testing devices into the stiffness test device, the problem of large gap between the test information in the prior art and the actual rail displacement during driving is solved, ensuring the accuracy of the stiffness value and improving personnel safety.

CN222461165UActive Publication Date: 2025-02-11CHINA RAILWAY ENG CONSULTING GRP CO LTD

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Patent Information

Application Number: CN202420807191.1
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-04-18
Publication Date: 2025-02-11
Estimated Expiration: 2034-04-18

AI Technical Summary

Technical Problem

When testing rails, the existing stiffness test device has a single vertical sensor that causes a large gap between the test information and the actual rail displacement when driving. The stiffness value does not match the actual stiffness value, which affects the determination of design parameters and cannot guarantee personnel safety.

Method used

A stiffness testing device including a vertical test device and a transverse test device is designed. The vertical test device conducts contact detection of the arc area of the test piece through the probe device. The horizontal test device applies force to the test piece in the horizontal direction. The common configuration of the probe device, the horizontal test device and the vertical device ensures the test results. accuracy.

Benefits of technology

By introducing probe devices and lateral testing devices, the problem of large gap between the test information and the actual rail displacement during driving is solved, the accuracy of the stiffness value is ensured, the determination of design parameters is affected, and personnel safety is improved.

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Abstract

The utility model provides a rigidity testing device for a fastener, and relates to the field of rigidity testing devices. The structure comprises a test platform; the vertical test device comprises a vertical support structure and a probe device, the bottom of the vertical support structure is arranged on the test platform, the probe device is arranged on the vertical support structure, the probe device is located in a space defined by the vertical support structure and the test platform, and a probe of the probe device is used for making contact with an arc-shaped area of a test piece; the bottom of the transverse test device is arranged on the test platform, the transverse test device vertically applies acting force to the test piece in the horizontal direction, and the force application area of the transverse test device to the test piece is adjacent to the detection area of the probe device to the test piece. The structure solves the problems that the difference between information of a test part and steel rail displacement during actual driving is large, a rigidity value is not matched with an actual rigidity value, and determination of design parameters is affected, and the safety of personnel is guaranteed.

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Description

Technical Field

[0001] The utility model relates to the field of stiffness testing devices, in particular to a stiffness testing device for fasteners. Background Art

[0002] In the existing stiffness testing device, there is mainly a single vertical sensor, which is set at the top of the rail for contact testing. The single vertical sensor for testing the rail leads to a large gap between the test part information and the actual rail displacement during driving, and the stiffness value does not match the actual stiffness value, which affects the determination of design parameters and cannot guarantee the safety of personnel. Therefore, there is an urgent need for a stiffness testing device for fasteners, which solves the problem that the test part information is very different from the actual rail displacement during driving, and the stiffness value does not match the actual stiffness value, which affects the determination of design parameters and cannot guarantee the safety of personnel. Utility Model Content

[0003] The purpose of the utility model is to provide a rigidity testing device for fasteners to improve the above problems. In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0004] A stiffness testing device for fasteners, comprising: a testing platform; a vertical testing device, the vertical testing device comprising a vertical support structure and a probe device, the bottom of the vertical support structure being arranged on the testing platform, the probe device being arranged on the vertical support structure, and the probe device being located in a space enclosed by the vertical support structure and the testing platform, the probe of the probe device being used to contact an arc-shaped area of a testing piece; and a transverse testing device, the bottom of the transverse testing device being arranged on the testing platform, the transverse testing device applying a force vertically to the testing piece in a horizontal direction, the force application area of the transverse testing device on the testing piece being arranged adjacent to the detection area of the probe device on the testing piece.

[0005] Preferably, the probe device comprises a first probe and a second probe, the first probe is used to contact a first arc-shaped area of the test piece, the second probe is used to contact a second arc-shaped area of the test piece, and the first probe is arranged opposite to the second probe.

[0006] Preferably, a vertical sensor and a vertical loading device are arranged between the first probe and the second probe, the vertical sensor is arranged on the vertical support structure, the top end of the vertical loading device is connected to the bottom end of the vertical sensor, and the vertical sensor and the vertical loading device are arranged on the same axis.

[0007] Preferably, the side is fixedly connected to the displacement sensor, the top ends of the load sensor and the displacement sensor are both arranged on the vertical support structure, and the bottom ends of the load sensor and the displacement sensor are both connected to the vertical loading device.

[0008] Preferably, the vertical support structure includes pillars, a top plate and an elevator, the pillars are arranged on both sides of the test piece, the top plate is arranged on the top of the test piece, one side of the elevator is connected to the pillars, and the other side of the elevator is connected to the top plate, and the top plate moves up and down along the pillars through the elevator.

[0009] Preferably, the elevator includes an inverted driving device, a rope-type lifting member and a moving member, the inverted driving device is arranged on the bottom outer wall of the pillar, one end of the rope-type lifting member is connected to the driving end of the inverted driving device, the other end of the rope-type lifting member is fixedly connected to the moving member, one side of the moving member is connected to the pillar, and the other side of the moving member is connected to the top plate.

[0010] Preferably, the transverse testing device comprises a transverse bracket and a transverse loading device, wherein the transverse bracket is arranged on the testing platform, the transverse bracket is connected to one end of the transverse loading device via a transverse connecting member, and the other end of the transverse loading device contacts the side wall of the test piece.

[0011] Preferably, the lateral loading device comprises a first component and a second component, the bottom of the first component is fixedly connected to the top of the second component, one side of the first component is arranged to be arc-shaped, and the first component is fitted with the arc-shaped area.

[0012] Preferably, the transverse support comprises a transverse pillar and a transverse support plate, the transverse pillar is arranged on the test platform, and the bottom of the transverse support plate is fixedly connected to the top of the transverse pillar.

[0013] Preferably, the transverse connecting member is provided on the transverse supporting plate, one end of the transverse connecting member extends toward the test piece, and the end of the transverse connecting member is connected to the transverse loading device.

[0014] The beneficial effects of this structure are:

[0015] The utility model introduces a probe device and a transverse testing device. The probe device is arranged on a vertical support structure, and is used to detect an arc area of a test piece. The transverse testing device is arranged on a test platform, and is used to apply a force vertically to the test piece. The common arrangement of the probe device, the transverse testing device and the vertical device solves the problem that the gap between the test part information and the actual rail displacement during driving is large, the stiffness value does not match the actual stiffness value, and the determination of design parameters is affected, thereby ensuring the safety of personnel.

[0016] Other features and advantages of the utility model will be described in the following description, and some of them will become obvious from the description, or be understood by implementing the embodiments of the utility model. The purpose and other advantages of the utility model can be achieved and obtained by the structures specifically pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a front view of the overall structure of the utility model;

[0019] Figure 2 It is a rear view of the overall structure of the utility model;

[0020] Figure 3 Based on Figure 2 A schematic diagram of the enlarged structure of region A;

[0021] Markings in the figure:

[0022] 1. Test platform; 2. Vertical support structure; 3. Probe device; 4. Transverse test device; 5. Vertical loading device; 6. Load sensor; 7. Displacement sensor; 21. Pillar; 22. Top plate; 23. Inverted drive device; 24. Rope lifting member; 25. Moving member; 31. First probe; 32. Second probe; 41. Transverse support; 42. Transverse loading device; 43. Transverse connecting member; 411. Transverse pillar; 412. Transverse support plate; 421. First component; 422. Second component. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0024] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of the present utility model, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0025] like Figure 1 As shown, a stiffness testing device for fasteners comprises: a testing platform 1; a vertical testing device, the vertical testing device comprising a vertical support structure 2 and a probe device 3, the bottom of the vertical support structure 2 is arranged on the testing platform 1, the probe device 3 is arranged on the vertical support structure 2, and the probe device 3 is located in a space enclosed by the vertical support structure 2 and the testing platform 1, and the probe of the probe device 3 is used to contact the arc area of the test piece; and a transverse testing device 4, the bottom of the transverse testing device 4 is arranged on the testing platform 1, the transverse testing device 4 applies a force to the test piece vertically in the horizontal direction, and the force application area of the transverse testing device 4 on the test piece is arranged adjacent to the detection area of the probe device 3 on the test piece. The specific implementation process of this device is as follows: the test piece is set on the test platform 1, and the probe device 3 performs contact detection on the arc area of the test piece. After detecting that the position of the test piece is set to the preset position, the probe device 3 sends the received information to the control center, and the control center issues instructions to the horizontal test device 4 and the vertical support structure 2 in turn, and the horizontal test device 4 and the vertical support structure 2 test the test piece.

[0026] like Figure 3As shown, in the present invention, the probe device 3 includes a first probe 31 and a second probe 32, the first probe 31 is used to contact the first arc area of the test piece, and the second probe 32 is used to contact the second arc area of the test piece, and the first probe 31 and the second probe 32 are arranged opposite to each other.

[0027] In this structure, the first probe 31 and the second probe 32 are used to detect the position of the test piece. When the test piece is set at a preset position, the first probe 31 and the second probe 32 send the received information to the control center.

[0028] In this structure, a vertical sensor and a vertical loading device 5 are arranged between the first probe 31 and the second probe 32, the vertical sensor is arranged on the vertical support structure 2, the top end of the vertical loading device 5 is connected to the bottom end of the vertical sensor, and the vertical sensor and the vertical loading device 5 are arranged on the same axis. The vertical loading device 5 is used to apply a force vertically to the horizontal direction of the test piece.

[0029] Furthermore, the vertical sensor includes a load sensor 6 and a displacement sensor 7, one side of the load sensor 6 is fixedly connected to the displacement sensor 7, the tops of the load sensor 6 and the displacement sensor 7 are both arranged on the vertical support structure 2, and the bottoms of the load sensor 6 and the displacement sensor 7 are both connected to the vertical loading device 5. The load sensor 6 is used to test the magnitude and direction of the force of the test piece, and the load sensor 6 is a LC-3KD35 three-component or LC-3KA72 three-component. The displacement sensor 7 is used to measure the displacement-related quantity of the position of the test piece during the movement process, and the displacement sensor 7 is a conductive plastic displacement sensor, a winding displacement sensor, or a metal film displacement sensor.

[0030] like Figure 2 As shown, in order to clarify the specific structure of the vertical support structure 2, the vertical support structure 2 includes a pillar 21, a top plate 22 and a lift, the pillars 21 are arranged on both sides of the test piece, the top plate 22 is arranged on the top of the test piece, one side of the lift is connected to the pillar 21, and the other side of the lift is connected to the top plate 22, and the top plate 22 moves up and down along the pillar 21 through the lift.

[0031] In the utility model, the lift includes an inverted driving device 23, a rope lifting member 24 and a moving member 25, wherein the inverted driving device 23 is arranged on the bottom outer wall of the pillar 21, one end of the rope lifting member 24 is connected to the driving end of the inverted driving device 23, the other end of the rope lifting member 24 is fixedly connected to the moving member 25, one side of the moving member 25 is connected to the pillar 21, and the other side of the moving member 25 is connected to the top plate 22. The moving member 25 moves along the pillar 21 through the rope lifting member 24 and the inverted driving device 23.

[0032] To clarify the specific setting of the transverse testing device 4, the transverse testing device 4 includes a transverse bracket 41 and a transverse loading device 42. The transverse bracket 41 is arranged on the test platform 1. The transverse bracket 41 is connected to one end of the transverse loading device 42 through the transverse connecting member 43, and the other end of the transverse loading device 42 is in contact with the side wall of the test piece.

[0033] In this structure, the transverse loading device 42 includes a first component 421 and a second component 422, the bottom of the first component 421 is fixedly connected to the top of the second component 422, one side of the first component 421 is set to an arc, and the first component 421 fits the arc area. Preferably, the shape of the transverse loading device 42 can be set to be circular, rectangular or elliptical.

[0034] To clarify the specific structure of the transverse support 41 , the transverse support 41 includes a transverse pillar 411 and a transverse support plate 412 . The transverse pillar 411 is disposed on the test platform 1 , and the bottom of the transverse support plate 412 is fixedly connected to the top of the transverse pillar 411 .

[0035] In this structure, the transverse connecting member 43 is disposed on the transverse supporting plate 412, one end of the transverse connecting member 43 extends toward the test piece, and the end of the transverse connecting member 43 is connected to the transverse loading device 42. The transverse connecting member 43 is disposed transversely, and the transverse connecting member 43 contacts the transverse loading device 42 with the test piece.

[0036] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

[0037] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A fastener stiffness testing device, characterized in that: include: Test platform (1); A vertical testing device, the vertical testing device comprising a vertical support structure (2) and a probe device (3), the bottom of the vertical support structure (2) being arranged on the testing platform (1), the probe device (3) being arranged on the vertical support structure (2), the probe device (3) being located in a space enclosed by the vertical support structure (2) and the testing platform (1), the probe of the probe device (3) being used to contact the arc-shaped area of the testing piece; as well as A transverse testing device (4), the bottom of which is arranged on the testing platform (1), the transverse testing device (4) applies a force to the test piece vertically in the horizontal direction, and the force application area of the transverse testing device (4) on the test piece is arranged adjacent to the detection area of the test piece by the probe device (3).

2. The fastener stiffness testing device according to claim 1, characterized in that: The probe device (3) comprises a first probe (31) and a second probe (32), the first probe (31) being used to contact a first arc-shaped area of a test piece, the second probe (32) being used to contact a second arc-shaped area of the test piece, and the first probe (31) and the second probe (32) being arranged opposite to each other.

3. The fastener stiffness testing device according to claim 2, characterized in that: A vertical sensor and a vertical loading device (5) are arranged between the first probe (31) and the second probe (32); the vertical sensor is arranged on the vertical support structure (2); the top end of the vertical loading device (5) is connected to the bottom end of the vertical sensor; and the vertical sensor and the vertical loading device (5) are arranged on the same axis.

4. The fastener stiffness testing device according to claim 3, characterized in that: The vertical sensor comprises a load sensor (6) and a displacement sensor (7), one side of the load sensor (6) is fixedly connected to the displacement sensor (7), the top ends of the load sensor (6) and the displacement sensor (7) are both arranged on the vertical support structure (2), and the bottom ends of the load sensor (6) and the displacement sensor (7) are both connected to the vertical loading device (5).

5. The rigidity testing device for fasteners according to claim 1, characterized in that: The vertical support structure (2) comprises a support (21), a top plate (22) and an elevator, wherein the support (21) is arranged on both sides of the test piece, the top plate (22) is arranged on the top of the test piece, one side of the elevator is connected to the support (21), and the other side of the elevator is connected to the top plate (22), and the top plate (22) moves up and down along the support (21) through the elevator.

6. The rigidity testing device for fasteners according to claim 5, characterized in that: The elevator comprises an inverted driving device (23), a rope-type lifting member (24) and a moving member (25); the inverted driving device (23) is arranged on the bottom outer wall of the pillar (21); one end of the rope-type lifting member (24) is connected to the driving end of the inverted driving device (23); the other end of the rope-type lifting member (24) is fixedly connected to the moving member (25); one side of the moving member (25) is connected to the pillar (21); and the other side of the moving member (25) is connected to the top plate (22).

7. The fastener stiffness testing device according to claim 1, characterized in that: The transverse testing device (4) comprises a transverse support (41) and a transverse loading device (42); the transverse support (41) is arranged on the testing platform (1); the transverse support (41) is connected to one end of the transverse loading device (42) via a transverse connecting member (43); and the other end of the transverse loading device (42) contacts the side wall of the testing piece.

8. The rigidity testing device for fasteners according to claim 7, characterized in that: The lateral loading device (42) comprises a first component (421) and a second component (422), the bottom of the first component (421) is fixedly connected to the top of the second component (422), one side of the first component (421) is arranged to be arc-shaped, and the first component (421) is fitted with the arc-shaped area.

9. The rigidity testing device for fasteners according to claim 7, characterized in that: The transverse support (41) comprises a transverse pillar (411) and a transverse support plate (412); the transverse pillar (411) is arranged on the test platform (1); and the bottom of the transverse support plate (412) is fixedly connected to the top of the transverse pillar (411).

10. The fastener stiffness testing device according to claim 9, characterized in that: The transverse connecting member (43) is arranged on the transverse supporting plate (412), one end of the transverse connecting member (43) extends in the direction of the test piece, and the end of the transverse connecting member (43) is connected to the transverse loading device (42).