Clamping rail type wheel rail transverse force measuring device

Abstract

The utility model discloses a rail clamping type wheel rail transverse force measuring device, comprising a steel rail; the clamp is propped against the steel rail; the fixing assembly at least comprises a U-shaped screw rod which is in threaded connection with the clamp and abuts against the steel rail; the sensor is in threaded connection with the top end of the fixture and abuts against the side wall of the steel rail; the sensor at least comprises an elastic piece which is driven by the steel rail to deform, and strain gauges in a circumferential array are arranged in the elastic piece. According to the rail clamping type wheel rail transverse force measuring device provided by the utility model, when a steel rail generates transverse force, the elastic piece is driven to deform, the deformation force of the elastic piece is transmitted to the internal strain gauge, and the resistance value of the strain gauge is changed, so that the strain gauge sends out a dynamic voltage signal, and then the voltage signal is converted into data of the transverse force; therefore, the problem that the detection data of the two-dimensional force sensor is not accurate is solved, and the accuracy of the detection data of the transverse force is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of railway engineering measurement, in particular to a track-clamping type wheel-rail lateral force measuring device. Background Art

[0002] With the rapid development of my country's high-speed train technology, in order to ensure the safety of railway transportation, it is necessary to dynamically monitor the vertical and lateral force parameters of the wheels and rails during train operation. The common lateral force measurement method is to install a two-dimensional force sensor at the bottom of the track to measure the vertical force and lateral force at the same time. Since the value generated when measuring the vertical force is much larger than the value generated by the lateral force, the lateral force measurement data is inaccurate, and the two-dimensional force sensor is large in size and needs to be used with special sleepers. When the sleepers are worn, the detection data of the two-dimensional force sensor will also be disturbed, resulting in inaccurate lateral force measurement data, thereby causing accidents. Utility Model Content

[0003] The utility model aims to provide a rail-clamping type wheel-rail lateral force measuring device for solving the above-mentioned problem.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a rail-type wheel-rail lateral force measuring device, comprising:

[0005] Fixtures;

[0006] A steel rail abutting against the fixture;

[0007] A fixing assembly, which includes at least a U-shaped screw threadedly connected to the fixture and fixed to the rail;

[0008] A sensor threadedly connected to the top of the fixture and abutting against the side wall of the rail;

[0009] The sensor at least comprises an elastic member that is deformed by the rail, wherein strain gauges in a circumferential array are arranged in the elastic member.

[0010] Preferably, a groove is formed on the side wall of the fixture, and a steel rail is movably connected in the groove.

[0011] Preferably, the U-shaped screw further includes a vertical portion and a curved portion, one end of the vertical portion extends to the side wall of the fixture, a first nut is fixedly mounted on the vertical portion, and the other end of the vertical portion is fixedly connected to the curved portion, which abuts against the rail.

[0012] Preferably, a clamping screw is fixedly mounted on the top end of the clamp, and a locking nut is fixedly mounted on the side wall of the clamping screw.

[0013] Preferably, the side wall of the compression screw is threadedly connected with an elastic member, and a strain zone is provided at the axis of the elastic member.

[0014] Preferably, a probe nut is fixedly mounted on the strain zone, and a first probe is fixedly mounted on the probe nut.

[0015] Preferably, an insulating sleeve is provided at the top end of the first probe, and an end surface of the insulating sleeve abuts against the rail.

[0016] Preferably, a cable is fixedly mounted on the side wall of the elastic member.

[0017] In the above technical scheme, the utility model provides a clamp-type wheel-rail lateral force measuring device, which has the following beneficial effects: by abutting the clamp against one end of the rail, the sensor installed on the clamp abuts against the side wall of the rail, and the lateral force generated by the rail when the train passes is detected, and the other end of the rail is abutted by the U-shaped screw installed on the clamp, so that the clamp is fixed on the rail, thereby increasing the stability of the sensor during detection, wherein the sensor is composed of at least an elastic member and a strain gauge, when the rail generates a lateral force, the elastic member is driven to deform, and the deformation force of the elastic member is transmitted to the internal strain gauge, so that the resistance value of the strain gauge changes, thereby causing the strain gauge to emit a dynamic voltage signal, and then the voltage signal is converted into lateral force data, so that the lateral force provided to the rail can be detected, thereby solving the problem of inaccurate detection data of the two-dimensional force sensor and improving the accuracy of the lateral force detection data. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the insulating sleeve structure of the utility model;

[0021] Figure 3 It is a schematic diagram of the structure of the strain gauge of the utility model;

[0022] Figure 4 It is a schematic diagram of the strain zone structure of the utility model.

[0023] Description of reference numerals:

[0024] 1. Fixture; 2. First nut; 3. U-shaped screw; 4. Sensor; 5. Anti-loosening nut; 6. Bending part; 7. Rail; 8. Groove; 9. Vertical part; 41. Pressing screw; 42. Strain gauge; 43. Elastic member; 44. Probe nut; 45. First probe; 46. Insulating sleeve; 47. Cable; 48. Strain zone. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] like Figure 1-4 As shown, a track-type wheel-rail lateral force measuring device comprises:

[0027] Rail 7;

[0028] A clamp 1 abutting against the rail 7;

[0029] A fixing assembly, which at least comprises a U-shaped screw rod 3 which is threadedly connected to the fixture 1 and fixed to the rail 7;

[0030] A sensor 4 is threadedly connected to the top of the fixture 1 and abuts against the side wall of the rail 7;

[0031] The sensor 4 at least comprises an elastic member 43 which is deformed by the rail 7 , and strain gauges 42 in a circumferential array are arranged in the elastic member 43 .

[0032] Specifically, the fixture 1 abuts against one side of the rail 7, and is fixed to the other side of the rail 7 through the U-shaped screw 3 installed on the fixture 1, so that the U-shaped screw 3 fixes the fixture 1 on the rail 7, and at the same time, the sensor 4 installed on the fixture 1 abuts against the side wall of the rail 7. When the train passes over the rail 7, the lateral force generated by the rail 7 drives the elastic part 43 of the sensor 4 to deform, and the deformation force generated by the elastic part 43 is transmitted to the strain gauge 42, so that the resistance value of the strain gauge 42 changes. By converting the voltage signal generated when the resistance value of the strain gauge 42 changes into lateral force data, accurate detection of the lateral force of the rail 7 can be completed.

[0033] In the above embodiment, the fixture 1 is abutted against one end of the rail 7 so that the sensor 4 installed on the fixture 1 abuts against the side wall of the rail 7, and the lateral force generated by the rail 7 when the train passes is detected. The other end of the rail 7 is abutted by the U-shaped screw 3 installed on the fixture 1, so that the fixture 1 is fixed on the rail 7, thereby increasing the stability of the sensor 4 during detection, wherein the sensor 4 is composed of at least an elastic member 43 and a strain gauge 42. When the rail 7 generates a lateral force, the elastic member 43 is driven to deform, and the deformation force of the elastic member 43 is transmitted to the internal strain gauge 42, so that the resistance value of the strain gauge 42 changes, thereby causing the strain gauge 42 to emit a dynamic voltage signal, and then the voltage signal is converted into lateral force data, so that the lateral force provided to the rail 7 can be detected, thereby solving the problem of inaccurate lateral force detection data and improving the accuracy of the lateral force detection data.

[0034] As an embodiment further provided by the present invention, a groove 8 is formed on the side wall of the fixture 1, and a steel rail 7 is movably connected in the groove 8.

[0035] Furthermore, the U-shaped screw 3 also includes a vertical portion 9 and a curved portion 6. One end of the vertical portion 9 extends to the side wall of the fixture 1. The first nut 2 is fixedly mounted on the vertical portion 9. The other end of the vertical portion 9 is fixedly connected to the curved portion 6, which abuts against the rail 7.

[0036] Specifically, the groove 8 opened on the clamp 1 is matched with the shape of the side wall of the rail 7, so that the clamp 1 is fixed to the rail 7 through the groove 8, and the vertical portion 9 of the U-shaped screw 3 extends to the side wall of the clamp 1 and is fixed by the first nut 2, so that the U-shaped screw 3 is fixed to the clamp 1, and the bent portion 6 of the U-shaped screw 3 is abutted against the other side of the rail 7, so that the clamp 1 and the U-shaped screw 3 cooperate to form a clamping effect, so that the clamp 1 is fixed to the rail 7.

[0037] As another embodiment further provided by the present invention, a clamping screw 41 is fixedly installed on the top of the clamp 1 , and a locking nut 5 is fixedly installed on the side wall of the clamping screw 41 .

[0038] Specifically, the clamping screw 41 is installed in the threaded hole at the top of the fixture 1 , and the clamping screw 41 is fixed by the anti-loosening nut 5 , so that the clamping screw 41 is fixed at the top of the fixture 1 .

[0039] As another embodiment further provided by the present invention, the side wall of the pressing screw 41 is threadedly connected with an elastic member 43 , and a strain zone 48 is provided at the axis of the elastic member 43 .

[0040] Furthermore, a probe nut 44 is fixedly mounted on the strain area 48 , and a first probe 45 is fixedly mounted on the probe nut 44 .

[0041] Furthermore, an insulating sleeve 46 is sleeved on the top end of the first probe 45 , and an end surface of the insulating sleeve 46 abuts against the rail 7 .

[0042] Specifically, an elastic member 43 is installed on the clamping screw 41, and a strain zone 48 is provided on the elastic member 43. The first probe 45 is fixed on the strain zone 48 of the elastic member 43 through a probe nut 44, so that when the first probe 45 is subjected to a lateral force, the strain zone 48 of the elastic member 43 is pushed to deform, so that the strain gauge 42 can be subjected to the deformation force generated by the elastic member 43, so that the strain gauge 42 detects the lateral force, and an insulating sleeve 46 is installed on the first probe 45, so that the first probe 45 remains insulated from the rail 7 during detection.

[0043] As another embodiment further provided by the present invention, a cable 47 is fixedly mounted on the side wall of the elastic member 43 .

[0044] Specifically, a strain gauge 42 is installed in the elastic member 43 to transmit a voltage signal through a cable 47 .

[0045] Working principle: The groove 8 opened by the fixture 1 fits with the side wall of the rail 7, so that the fixture 1 can abut against the rail 7, and the vertical part 9 of the U-shaped screw 3 extends to the side wall of the fixture 1 and is fixed to the fixture 1 by the first nut 2, so that the U-shaped screw 3 is fixed to the side wall of the fixture 1, and the bent part 6 of the U-shaped screw 3 is abutted against the rail 7, so that the fixture 1 and the U-shaped screw 3 cooperate with each other to form a clamping effect, thereby fixing the fixture 1 on the rail 7, and the clamping screw 41 is fixed to the top of the fixture 1 by the anti-loosening nut 5, so that the elastic member 43 is installed on the fixture 1 through the clamping screw 41, and the elastic member 43 is installed on the strain area 48 A first probe 45 is provided, and the first probe 45 is fixed by a probe nut 44 to prevent the first probe 45 from falling off. An insulating sleeve 46 is installed on the first probe 45 so that no current is generated when the first probe 45 abuts against the rail 7. When the rail 7 generates a lateral force, the first probe 45 pushes the strain area 48 of the elastic member 43 to deform, so that the strain gauge 42 installed in the elastic member 43 is subjected to the deformation force. The resistance value of the strain gauge 42 changes due to the deformation force, so that the strain gauge 42 sends a dynamic voltage signal through the cable 47. By converting the voltage signal of the strain gauge 42 into lateral force data, the lateral force provided by the rail 7 can be detected.

[0046] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A rail-type wheel-rail lateral force measuring device, characterized in that: include: Rails (7); A clamp (1) abutting against a steel rail (7); A fixing assembly, which at least comprises a U-shaped screw rod (3) threadedly connected to the fixture (1) and fixed to the rail (7); A sensor (4) threadedly connected to the top of the fixture (1) and abutting against the side wall of the rail (7); The sensor (4) comprises at least an elastic member (43) that is deformed by a steel rail (7), wherein strain gauges (42) in a circumferential array are arranged in the elastic member (43).

2. The clamping rail type wheel-rail lateral force measuring device according to claim 1, characterized in that: A groove (8) is provided on the side wall of the clamp (1), and a steel rail (7) is movably connected in the groove (8).

3. The clamping rail type wheel-rail lateral force measuring device according to claim 1, characterized in that: The U-shaped screw rod (3) further comprises a vertical portion (9) and a curved portion (6), one end of the vertical portion (9) extends to the side wall of the fixture (1), a first nut (2) is fixedly mounted on the vertical portion (9), and the other end of the vertical portion (9) is fixedly connected to the curved portion (6), and the curved portion (6) abuts against the rail (7).

4. The clamping rail type wheel-rail lateral force measuring device according to claim 1, characterized in that: A clamping screw (41) is fixedly mounted on the top end of the clamp (1), and a locking nut (5) is fixedly mounted on the side wall of the clamping screw (41).

5. The clamping rail type wheel-rail lateral force measuring device according to claim 4, characterized in that: The side wall of the compression screw (41) is threadedly connected to an elastic member (43), and a strain zone (48) is provided at the axis of the elastic member (43).

6. The clamping rail type wheel-rail lateral force measuring device according to claim 5, characterized in that: A probe nut (44) is fixedly mounted on the strain zone (48), and a first probe (45) is fixedly mounted on the probe nut (44).

7. The clamping rail type wheel-rail lateral force measuring device according to claim 6, characterized in that: The top end of the first probe (45) is sleeved with an insulating sleeve (46), and the end surface of the insulating sleeve (46) abuts against the steel rail (7).

8. The clamping rail type wheel-rail lateral force measuring device according to claim 1, characterized in that: A cable (47) is fixedly mounted on the side wall of the elastic member (43).

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