Rail transit large model testing device

Abstract

The invention discloses a rail transit large model testing device, which comprises a plurality of detection units and a receiving processor in communication connection with the plurality of detection units, and is characterized in that the receiving processor is connected with a display terminal, the detection unit at least comprises a transverse detection head in contact connection with the side wall of the vertical face of the steel rail and a longitudinal detection head in contact connection with the shoulder face of the bottom of the steel rail, and the transverse detection head and the longitudinal detection head are used for detecting the transverse vibration frequency and the longitudinal vibration frequency of the steel rail in the running process respectively. The rail transit large model testing device can monitor the amplitude and vibration frequency of the steel rail in the rail transit operation process on line, discover abnormal sections in time, achieve first-time maintenance and reduce further loss.

Description

Technical Field

[0001] The invention relates to the field of rails, and in particular to a large-scale model testing device for rail transit. Background Art

[0002] Rail transit is currently a widely used mode of transportation. It relies on trains running on tracks. Therefore, whether the tracks are damaged directly affects the safety of train operation.

[0003] On some soft-base roads, fasteners and rails are often severely damaged due to foundation collapse. Therefore, it is very important to conduct large-scale rail transit model monitoring on such sections. Summary of the invention

[0004] The purpose of the present invention is to provide a large-scale model testing device for rail transit, which can monitor the amplitude and vibration frequency of the rails during the operation of rail transit online, discover abnormal sections in time, perform maintenance in the first time, and reduce further losses.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a large-scale model testing device for rail transit, which includes multiple detection units and a receiving processor that is communicatively connected to the multiple detection units, and the receiving processor is connected to a display terminal, wherein the detection unit includes at least a transverse detection head that is in contact with the side wall of the vertical surface of the rail, and a longitudinal detection head that is in contact with the shoulder surface of the bottom of the rail, and the transverse detection head and the longitudinal detection head are used to respectively detect the transverse vibration frequency and the longitudinal vibration frequency of the rail during operation.

[0006] Preferably, the detection unit includes an equipment body, a communication transmitter is provided on the equipment body, two ends of the equipment body are respectively installed on two adjacent sleepers, a first mounting frame is provided on the inner side of the equipment body, the longitudinal detection head is installed on the first mounting frame, a second mounting frame is provided at the upper end of the equipment body, and the transverse detection head is installed on the second mounting frame.

[0007] Preferably, mounting plates are provided at the bottom of both ends of the device body, mounting holes are provided on the mounting plates, and fastening screws are provided in the mounting holes.

[0008] Preferably, both ends of the device body are arranged as telescopic sections.

[0009] Preferably, the transverse detection head has the same structure as the longitudinal detection head, and both include: a rod body with an open inner cavity is provided at one end, an air hole connected to the inner cavity and a distance detection element are provided at the other end of the rod body; an inner rod capable of reciprocating movement is inserted into the inner cavity, and a contact ball head is provided at the outer end of the inner rod.

[0010] Preferably, a cylindrical cavity is arranged on the side wall of the inner cavity, a sliding block sliding in the cylindrical cavity is arranged at the inner end of the inner rod, and springs are arranged on both sides of the sliding block.

[0011] Preferably, each of the detection units is provided with a plurality of transverse detection heads and longitudinal detection heads.

[0012] Preferably, the transverse detection heads and the longitudinal detection heads are staggered.

[0013] According to the above technical solution, the large-scale rail transit model testing device in the present invention can monitor the amplitude and vibration frequency of the rails during the operation of rail transit online, discover abnormal sections in time, and perform maintenance in the first time to reduce further losses.

[0014] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a side schematic diagram of a preferred embodiment of a rail transit large model testing device;

[0017] Figure 2 It is a front schematic diagram of a preferred embodiment of a large-scale rail transit model testing device;

[0018] Figure 3 It is a structural schematic diagram of a preferred implementation of a transverse detection head or a longitudinal detection head;

[0019] Figure 4 It is a test flow chart of the rail transit large model test device.

[0020] Description of Reference Numerals

[0021] 1-rail; 2-sleeper; 3-equipment body; 4-second mounting frame; 5-first mounting frame; 6-fastening screws; 7-longitudinal detection head; 8-lateral detection head; 9-communication transmitter; 10-mounting plate; 11-rod body; 12-cylindrical cavity; 13-inner cavity; 14-contact ball head; 15-inner rod; 16-spring; 17-slider; 18-air hole; 19-distance detection element. DETAILED DESCRIPTION

[0022] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0023] In the present invention, unless otherwise stated, directional words contained in terms such as "up, down, left, right, front, back, inside, outside" merely represent the orientation of the terms in normal usage, or are common names understood by those skilled in the art, and should not be regarded as limitations on the terms.

[0024] See also Figure 1-4 The large-scale rail transit model testing device shown in the figure comprises a plurality of detection units and a receiving processor which is communicatively connected to the plurality of detection units, the receiving processor being connected to a display terminal, wherein the detection unit comprises at least a transverse detection head 8 which is in contact with the side wall of the vertical surface of the rail 1, and a longitudinal detection head 7 which is in contact with the shoulder surface at the bottom of the rail 1, the transverse detection head 8 and the longitudinal detection head 7 being used to respectively detect the transverse vibration frequency and the longitudinal vibration frequency of the rail 1 during operation.

[0025] Through the implementation of the above technical solution, the large-scale model test device for rail transit can monitor the amplitude and vibration frequency of the rail 1 during the operation of rail transit online, find abnormal sections in time, and perform maintenance in the first time to reduce further losses. The large-scale model test device for rail transit is used as follows: the detection unit is installed on the side of the rail 1 of the section prone to sedimentation and collapse, so that the transverse detection head 8 contacts the side wall of the vertical surface of the rail 1, and the longitudinal detection head 7 contacts the shoulder surface at the bottom of the rail 1. The operation status of the section is known by detecting the amplitude and vibration frequency during operation. When an abnormality occurs, such as roadbed collapse, the detected amplitude and vibration frequency will also change. According to the amplitude and vibration frequency change information received by the terminal, the abnormal situation of the abnormal section is known in the first time, and maintenance is carried out in the first time.

[0026] In this embodiment, in order to further provide a detection unit, the detection unit includes a device body 3, a communication transmitter 9 is arranged on the device body 3, both ends of the device body 3 are respectively mounted on two adjacent sleepers 2, a first mounting frame 5 is arranged on the inner side of the device body 3, the longitudinal detection head 7 is mounted on the first mounting frame 5, a second mounting frame 4 is arranged on the upper end of the device body 3, and the transverse detection head 8 is mounted on the second mounting frame 4. The communication transmitter 9 and the receiving processor are wirelessly connected, and the device body 3 is fixedly installed between the two sleepers 2, so that the position of the rail 1 between the sleepers 2 can be monitored dynamically, reducing the influence of the fastened fasteners on the detection.

[0027] In this embodiment, mounting plates 10 are provided at the bottom of both ends of the device body 3, mounting holes are provided on the mounting plates 10, and fastening screws 6 are provided in the mounting holes. Through such a setting, a mounting method of the device body 3 is provided, and threaded sleeves corresponding to the fastening screws 6 can be pre-embedded on the sleeper 2.

[0028] In this embodiment, both ends of the device body 3 are arranged as telescopic sections. Through such an arrangement, the device body 3 can be installed between sleepers 2 of different spans.

[0029] In this embodiment, in order to further provide a structure of a transverse detection head 8 and a longitudinal detection head 7, the transverse detection head 8 has the same structure as the longitudinal detection head 7, and both include: a rod body 11 with an open inner cavity 13 is provided at one end, and the other end of the rod body 11 is provided with an air hole 18 connected to the inner cavity 13, and a distance detection element 19; an inner rod 15 capable of reciprocating movement is inserted into the inner cavity 13, and a contact ball head 14 is provided at the outer end of the inner rod 15. The contact ball head 14 is elastically squeezed and contacted with the detection part, and the contact ball head 14 vibrates with the vibration of the rail 1, and the vibration signal is converted into a movement signal of the inner rod 15, and the change value of the movement of the inner rod 15 is measured by the distance detection element 19. The distance detection element 19 can be a laser rangefinder.

[0030] In this embodiment, in order to further provide an elastic connection mode of the inner rod 15, a cylindrical cavity 12 is provided on the side wall of the inner cavity 13, and a slider 17 is provided at the inner end of the inner rod 15 for sliding in the cylindrical cavity 12, and springs 16 are provided on both sides of the slider 17. The slider 17 is also provided with air holes 18 to prevent the air from being compressed in the closed space during the sliding process, thereby affecting the measurement results.

[0031] In this embodiment, each detection unit is provided with a plurality of transverse detection heads 8 and longitudinal detection heads 7. The amplitude and vibration frequency values ​​are obtained by taking the average value through the measurement structure of the plurality of transverse detection heads 8 and longitudinal detection heads 7 as the final amplitude and vibration frequency values ​​of a certain section.

[0032] In this embodiment, the transverse detection head 8 and the longitudinal detection head 7 are staggered. Through such an arrangement, the mutual interference between the transverse detection head 8 and the longitudinal detection head 7 is reduced.

[0033] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0034] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0035] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A large-scale rail transit model testing device, characterized in that: The rail transit large model testing device comprises a plurality of detection units and a receiving processor that is communicatively connected to the plurality of detection units, wherein the receiving processor is connected to a display terminal, wherein the detection unit comprises at least a transverse detection head (8) that is in contact with a side wall of a vertical surface of a rail (1), and a longitudinal detection head (7) that is in contact with a shoulder surface at the bottom of the rail (1), wherein the transverse detection head (8) and the longitudinal detection head (7) are used to respectively detect a transverse vibration frequency and a longitudinal vibration frequency of the rail (1) during operation.

2. The large-scale rail transit model testing device according to claim 1 is characterized in that: The detection unit comprises a device body (3), a communication transmitter (9) is arranged on the device body (3), two ends of the device body (3) are respectively mounted on two adjacent sleepers (2), a first mounting frame (5) is arranged on the inner side of the device body (3), the longitudinal detection head (7) is mounted on the first mounting frame (5), a second mounting frame (4) is arranged on the upper end of the device body (3), and the transverse detection head (8) is mounted on the second mounting frame (4).

3. The large-scale rail transit model testing device according to claim 2 is characterized in that: The bottoms of both ends of the device body (3) are provided with mounting plates (10), the mounting plates (10) are provided with mounting holes, and fastening screws (6) are provided in the mounting holes.

4. The large-scale rail transit model testing device according to claim 2 or 3, characterized in that: Both ends of the device body (3) are arranged as telescopic sections.

5. The large-scale rail transit model testing device according to claim 1 is characterized in that: The transverse detection head (8) has the same structure as the longitudinal detection head (7), and both include: A rod body (11) with an open inner cavity (13) is provided at one end, and an air hole (18) communicating with the inner cavity (13) and a distance detection element (19) are provided at the other end of the rod body (11); An inner rod (15) capable of reciprocating movement is inserted into the inner cavity (13), and a contact ball head (14) is provided at the outer end of the inner rod (15).

6. The large-scale rail transit model testing device according to claim 5, characterized in that: A cylindrical cavity (12) is provided on the side wall of the inner cavity (13); The inner end of the inner rod (15) is provided with a sliding block (17) which is located and slides in the cylindrical cavity (12), and springs (16) are provided on both sides of the sliding block (17).

7. The large-scale rail transit model testing device according to claim 1, characterized in that: Each of the detection units is provided with a plurality of transverse detection heads (8) and longitudinal detection heads (7).

8. The large-scale rail transit model testing device according to claim 7, characterized in that: The transverse detection head (8) and the longitudinal detection head (7) are staggered and distributed.

Images