CN211178816U - Switch conversion resistance monitoring bolt - Google Patents
Switch conversion resistance monitoring bolt Download PDFInfo
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- CN211178816U CN211178816U CN201922337690.0U CN201922337690U CN211178816U CN 211178816 U CN211178816 U CN 211178816U CN 201922337690 U CN201922337690 U CN 201922337690U CN 211178816 U CN211178816 U CN 211178816U
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Abstract
The utility model provides a switch conversion resistance monitoring bolt, which comprises a pin head part, a pin body part and a strain gauge; the pin body part is used for being inserted into a pin hole corresponding to a fork iron of a railway turnout and an action pull rod of a point switch; the pin body part comprises a stress section and a positioning section, and a cylindrical hole is formed in the stress section; the strain gauges are in multiple pairs, the multiple pairs of strain gauges are arranged in the cylindrical hole at intervals along the extending direction of the cylindrical hole, and two strain gauges in each pair are symmetrically attached to the inner wall of the cylindrical hole along the force measuring direction of the turnout conversion resistance monitoring bolt so as to sense the deformation of the stress section and convert the stress section into corresponding electric signals. The turnout switch has better structural strength, and can realize the real-time monitoring of turnout switch switching resistance in all weather during the running process of the train. The problem of thereby switch conversion resistance sensor overall structure intensity among the prior art is limited and can't carry out real-time supervision to switch conversion resistance when the train operation and influence the train operation is solved.
Description
Technical Field
The utility model relates to a railway maintenance of equipment field particularly, relates to a switch conversion resistance monitoring bolt.
Background
When the railway train is in operation and enters or leaves a station, the railway train needs to be switched to operate on different tracks. The switch of track department is provided with the switch, and the switch next door is provided with the goat, thereby the action pull rod of goat is connected with the forked iron of switch through connecting bolt and drags the switch conversion to guarantee train safety, high-efficient operation.
After the turnout works for a long time, the conversion resistance of the turnout can be increased due to the roadbed or other reasons, the acting force of the point switch is limited, the normal work of the point switch can be influenced after the turnout resistance is increased, and finally the turnout conversion is abnormal, so that the driving safety is influenced.
The turnout conversion comprises three processes of unlocking, conversion and locking, in order to ensure the driving safety of a train, various mechanical parameters of turnout operation need to be detected regularly, and specifically comprise static force in a locking state, resistance force during normal conversion of the turnout, maximum output force (friction force) of a switch machine, rebound force of a switch rail after unlocking, friction force in a conversion process and blocking resistance force in the conversion process. The values of these mechanical parameters are directly related to the operating conditions of the switch, and many faults of the switch are also related to these mechanical parameters. Therefore, the working condition of the turnout is known and mastered by regularly measuring the mechanical parameters, and when the turnout conversion resistance exceeds a normal range, the turnout and the roadbed are correspondingly overhauled, so that the turnout conversion resistance is restored to the normal range.
At present, when turnout conversion resistance is detected, a specific turnout conversion resistance sensor is adopted, the shape of the sensor is similar to that of a connecting bolt between an action pull rod and a fork iron, when the turnout conversion resistance sensor is detected, the connecting bolt between the action pull rod and the fork iron is pulled out from pin holes of the action pull rod and the fork iron, then the turnout conversion resistance sensor is inserted, and the conversion resistance when a switch machine pulls or pushes the turnout can be detected through the sensor.
The existing turnout conversion resistance sensor is provided with two pairs of slotted holes extending along the radial direction from two sides of a pin body, the slotted holes are symmetrically arranged, strain gauges are arranged on the bottom surface inside the slotted holes, the structural design causes the whole structural strength of the sensor to be limited, the radial stress strength is poor, a great fracture risk exists during working, in order to ensure the running safety of a train, the detection is required when the train is stopped, the real-time monitoring on turnout conversion resistance in all weather cannot be realized, and therefore, the operation of the train is greatly influenced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a switch conversion resistance monitoring bolt to thereby solve the switch conversion resistance sensor overall structure intensity among the prior art limited and can't carry out the problem that real-time supervision influences the train operation to switch conversion resistance when the train operation.
In order to achieve the above object, the utility model provides a switch conversion resistance monitoring bolt, include: a pin head; the pin body part is connected with the pin head part and is used for being inserted into a pin hole corresponding to a fork iron of a railway turnout and an action pull rod of a point switch; the pin body part comprises a stress section and a positioning section, and a cylindrical hole extending along the axial lead direction of the pin body part is formed in the stress section; the strain gauges are arranged in the cylindrical hole at intervals along the extending direction of the cylindrical hole, and the two strain gauges in each pair are symmetrically attached to the inner wall of the cylindrical hole along the force measuring direction of the turnout conversion resistance monitoring bolt so as to sense the deformation of the stress section and convert the deformation into corresponding electric signals when the action pull rod applies acting force to the forked iron.
Further, the strain gauge is a rectangular strain gauge, and the length direction of each strain gauge is parallel to the central line direction of the cylindrical hole.
Further, the strain gauges are two pairs.
Further, the force-bearing section includes: a first force-bearing segment; the second stress section is divided into two sections, and the two sections of the second stress section are respectively adjacent to the pin head and the positioning section; the first stress section is located between the two second stress sections, and each pair of strain gauges is opposite to the adjacent position of the first stress section and the second stress section along the radial direction of the pin body part.
Furthermore, the outer walls of the adjacent parts of the first stress section and the two second stress sections are provided with deformation grooves, the deformation grooves are annular, and the deformation grooves are formed along the circumferential direction of the pin body part; wherein each pair of strain gauges is opposite to the deformation groove along the radial direction of the pin body part.
Further, the deformation groove is provided with a bottom wall and two side walls, and the included angle between the bottom wall and the two side walls is a round angle structure.
Furthermore, a circuit cavity is formed inside the head of the pin, and a circuit board is arranged inside the circuit cavity; wherein, many pairs of foil gages pass through the wire and are connected with the circuit board.
Furthermore, one end of the pin head part, which is close to the pin body part, is provided with a first positioning structure, and the first positioning structure is used for limiting the circumferential angle of the pin head part and the pin body part; wherein, the first location structure is a hexagonal prism.
Further, the positioning section includes: a second locating formation adjacent the pin body for limiting the circumferential angle of the pin head and the pin body; wherein, the second location structure is a quadrangular prism.
Further, the positioning section further comprises: the third positioning structure is adjacent to the second positioning structure and used for limiting the axial positions of the pin head part and the pin body part; wherein, the third location structure is a threaded column.
The turnout conversion resistance monitoring bolt adopting the technical scheme of the utility model comprises a pin head part, a pin body part and a strain gauge; the pin body part is connected with the pin head part and is used for being inserted into a pin hole corresponding to a fork iron of a railway turnout and an action pull rod of a point switch; the pin body part comprises a stress section and a positioning section, and a cylindrical hole extending along the axial lead direction of the pin body part is formed in the stress section; the strain gauges are in multiple pairs, the multiple pairs of strain gauges are arranged in the cylindrical hole at intervals along the extending direction of the cylindrical hole, and two strain gauges in each pair are symmetrically attached to the inner wall of the cylindrical hole along the force measuring direction of the turnout conversion resistance monitoring bolt so as to sense the deformation of the stress section and convert the deformation into corresponding electric signals when the action pull rod applies acting force to the fork-shaped iron. The turnout switch has better structural strength, and can realize the real-time monitoring of turnout switch switching resistance in all weather during the running process of the train. The problem of thereby switch conversion resistance sensor overall structure intensity among the prior art is limited and can't carry out real-time supervision to switch conversion resistance when the train operation and influence the train operation is solved.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic perspective view of an alternative switch switching resistance monitoring bolt according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional structure view of an alternative switch switching resistance monitoring bolt according to an embodiment of the present invention;
fig. 3 is a schematic view of an alternative installation structure of a switch switching resistance monitoring bolt on a fork iron of a railway switch and an action pull rod of a switch machine according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an optional strain gauge of a switch switching resistance monitoring bolt according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a bridge circuit of an optional strain gauge of a switch switching resistance monitoring bolt according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an alternative fork iron according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an optional first limiting plate according to an embodiment of the present invention; and
fig. 8 is a schematic structural diagram of an optional second limiting plate according to an embodiment of the present invention.
Wherein the figures include the following reference numerals:
10. a pin head; 11. a circuit cavity; 12. a first positioning structure; 20. a pin body portion; 21. a stress section; 211. a first force-bearing segment; 212. a second force-bearing segment; 213. a deformation groove; 22. a positioning section; 221. a second positioning structure; 222. a third positioning structure; 23. a cylindrical hole; 30. a strain gauge; 31. a resistance wire; 32. connecting the end heads; 40. fork iron; 50. an action pull rod; 60. a circuit board; 70. a first limit plate; 80. a second limiting plate; 90. a pin hole.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
According to the utility model discloses switch conversion resistance monitoring bolt, as shown in fig. 1-3, including round pin head 10, round pin body 20 and foil gage 30; the pin body part 20 is connected with the pin head part 10, and the pin body part 20 is used for being inserted into a pin hole corresponding to a fork iron 40 of a railway turnout and an action pull rod 50 of a point switch; the pin body part 20 comprises a stress section 21 and a positioning section 22, and a cylindrical hole 23 extending along the axial lead direction of the pin body part 20 is formed in the stress section 21; the strain gauges 30 are in multiple pairs, the multiple pairs of strain gauges 30 are arranged in the cylindrical hole 23 at intervals along the extending direction of the cylindrical hole 23, and the two strain gauges 30 of each pair are symmetrically attached to the inner wall of the cylindrical hole 23 along the force measuring direction of the turnout conversion resistance monitoring bolt so as to sense the deformation of the force receiving section 21 and convert the deformation into corresponding electric signals when the action pull rod 50 applies acting force to the fork-shaped iron 40. The turnout switch has better structural strength, and can realize the real-time monitoring of turnout switch switching resistance in all weather during the running process of the train. The problem of thereby switch conversion resistance sensor overall structure intensity among the prior art is limited and can't carry out real-time supervision to switch conversion resistance when the train operation and influence the train operation is solved.
In specific implementation, as shown in fig. 2, a circuit cavity 11 is formed inside the pin head 10, and a circuit board 60 is arranged inside the circuit cavity 11; the pairs of strain gauges 30 are connected to the circuit board 60 by wires.
Specifically, as shown in fig. 2, there are two pairs of strain gauges 30, each stress section 21 includes a first stress section 211 and a second stress section 212, each second stress section 212 includes two sections, each second stress section 212 is adjacent to the pin head 10 and the positioning section 22, the first stress section 211 is located between the two second stress sections 212, the outer walls of the adjacent portions of the first stress section 211 and the two second stress sections 212 are provided with a deformation groove 213, each deformation groove 213 is annular, and each deformation groove 213 is provided along the circumferential direction of the pin body 20; each pair of strain gauges 30 is opposed to the adjoining portions of the first force-receiving section 211 and the second force-receiving section 212 in the radial direction of the pin body portion 20, that is, each pair of strain gauges 30 is opposed to the deformation groove 213 in the radial direction of the pin body portion 20. After the pin body part 20 is inserted into the pin hole corresponding to the action pull rod 50 of the switch machine and the fork iron 40, the hole wall of the pin hole on the action pull rod 50 is opposite to the first stress section 211, the hole walls of the two pin holes of the fork iron 40 are opposite to the two second stress sections 212, when the action pull rod 50 exerts acting force on the fork iron 40, the action pull rod 50 exerts acting force on the first stress section 211, and the reaction force of the fork iron 40 is exerted on the two second stress sections 212, in the process, the deformation at the two deformation grooves 213 is the largest, so that the two pairs of strain gauges 30 are deformed to the maximum extent, and the monitoring precision of the switch switching resistance can be improved.
The deformation groove 213 has a bottom wall and two side walls, and an included angle between the bottom wall and the two side walls is a fillet structure, so that stress concentration caused by a right-angle structure can be avoided, and the pin body part 20 is effectively prevented from breaking.
As shown in fig. 4, the strain gauges 30 are rectangular strain gauges, the length direction of each strain gauge 30 is parallel to the center line direction of the cylindrical hole 23, after the force-receiving section 21 is deformed under the action of the action pull rod 50 and the fork-shaped iron 40, each pair of strain gauges 30 is correspondingly deformed so as to slightly elongate or shorten the length direction thereof, the strain gauge 30 is attached with a resistance wire 31, the resistance wire 31 is arranged in a reciprocating and returning manner along the length direction of the strain gauge 30, so that the length of the resistance wire 31 in the length direction of the strain gauge 30 is maximally increased, and when the strain gauge 30 is slightly extended or shortened, the length of the resistance wire 31 is greatly extended or shortened, so that the resistance of the resistance wire 31 is increased or reduced; the two ends of the resistance wires 31 are provided with connecting end heads 32, and the resistance wires 31 are mutually bridged and connected with the circuit board 60 through conducting wires; specifically, as shown in fig. 5, the resistance wires 31 of the four strain gauges 30 are connected to a bridge circuit, and by applying a corresponding voltage E to the bridge circuit, when the resistance values of the resistance wires 31 of the four strain gauges 30 change correspondingly, the output voltage V changes correspondingly, and the magnitude of the deformation of the stressed section 21 can be estimated by monitoring the change of the voltage V, so as to further measure the conversion resistance of the turnout when the action pull rod 50 applies force to the fork-shaped iron 40.
In order to ensure the monitoring accuracy of the switch conversion resistance during the use of the switch conversion resistance monitoring bolt, the force measuring direction of the switch conversion resistance monitoring bolt needs to be consistent with the acting force direction of the action pull rod 50 on the fork iron 40, so that the pin body part 20 needs to be prevented from being stressed and deflected after being inserted into the pin hole corresponding to the fork iron 40 and the action pull rod 50. Further, one end of the pin head 10 close to the pin body 20 is provided with a first positioning structure 12, that is, the first positioning structure 12 is located at a lower end position of the pin head 10, the first positioning structure 12 is a hexagonal prism, and the first positioning structure 12 is used for limiting a circumferential angle of the pin head 10 and the pin body 20. In the use process, as shown in fig. 3, 6 and 7, the first limiting plate 70 is additionally arranged on the upper part of the head end of the forked iron 40, the first limiting plate 70 is provided with a corresponding regular hexagonal hole along the thickness direction, and the regular hexagonal hole is sleeved on the first positioning structure 12 so as to limit the deflection of the turnout switch resistance monitoring bolt.
In addition, the positioning section 22 includes a second positioning structure 221, the second positioning structure 221 is adjacent to the pin body portion 20, the second positioning structure 221 is a quadrangular prism, and the second positioning structure 221 also serves to limit the circumferential angle of the pin head portion 10 and the pin body portion 20. As shown in fig. 3, 6 and 8, in the using process, the second limiting plate 80 is additionally arranged at the lower part of the head end of the forked iron 40, the second limiting plate 80 is provided with a corresponding square hole along the thickness direction, and the square hole is sleeved on the first positioning structure 12 so as to limit the deflection of the switch conversion resistance monitoring bolt. In practical use, one of the first positioning structure 12 and the second positioning structure 221 is adopted to limit the circumferential angle of the switch conversion resistance monitoring bolt.
Further, as shown in fig. 1 to 3, the positioning section 22 further includes a third positioning structure 222, the third positioning structure 222 is adjacent to the second positioning structure 221, the third positioning structure 222 is a threaded column, and the third positioning structure 222 is used for limiting the axial position of the pin head 10 and the pin body 20. In the use, corresponding nuts are screwed on the threaded columns, so that the turnout switch resistance monitoring bolt can be limited to move along the axis direction of the turnout switch resistance monitoring bolt, and the influence on the measurement precision is avoided. In order to prevent the nut from falling off, a pin hole 90 extending in the radial direction is formed in the lower portion of the threaded post, and a locking pin is inserted into the pin hole 90 to prevent the nut from falling off.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a switch conversion resistance monitoring bolt which characterized in that includes:
a pin head (10);
the pin body part (20) is connected with the pin head part (10), and the pin body part (20) is used for being inserted into a pin hole corresponding to a fork iron (40) of a railway turnout and an action pull rod (50) of a switch machine; the pin body part (20) comprises a stress section (21) and a positioning section (22), and a cylindrical hole (23) extending along the axial lead direction of the pin body part (20) is formed in the stress section (21);
strain gauge (30), strain gauge (30) are many pairs, and many pairs of strain gauge (30) are followed the extending direction interval of cylindricality hole (23) sets up in cylindricality hole (23), every two of pair strain gauge (30) are followed switch conversion resistance monitoring bolt's dynamometry direction symmetry is attached on the inner wall of cylindricality hole (23) with action pull rod (50) are to respond to when fork iron (40) applys the effort deformation of atress section (21) and convert into corresponding electric signal.
2. The switch transition resistance monitoring bolt according to claim 1, characterized in that the strain gauges (30) are rectangular strain gauges, and the length direction of each strain gauge (30) is parallel to the center line direction of the cylindrical hole (23).
3. The switch transition resistance monitor bolt of claim 2, wherein said strain gauges (30) are in two pairs.
4. The switch transition resistance monitor bolt of claim 3, wherein the force-bearing segment (21) comprises:
a first force-bearing segment (211);
a second force-bearing segment (212), the second force-bearing segment (212) being two segments, the two segments (212) abutting the pin head (10) and the locating segment (22), respectively;
wherein the first force-bearing section (211) is located between two sections of the second force-bearing section (212), and each pair of the strain gauges (30) is opposite to the adjacent position of the first force-bearing section (211) and the second force-bearing section (212) along the radial direction of the pin body part (20).
5. The switch conversion resistance monitoring bolt according to claim 4, wherein the outer walls of the adjacent parts of the first stress section (211) and the two second stress sections (212) are provided with deformation grooves (213), the deformation grooves (213) are annular, and the deformation grooves (213) are formed along the circumferential direction of the pin body part (20);
wherein each pair of the strain gauges (30) is opposed to the deformation groove (213) in a radial direction of the pin body portion (20).
6. The switch transition resistance monitoring bolt of claim 5, wherein the deformation groove (213) has a bottom wall and two side walls, and the included angle between the bottom wall and the two side walls is a round angle structure.
7. The switch transition resistance monitoring bolt of claim 1, characterized in that the pin head (10) has a circuit cavity (11) therein, and a circuit board (60) is disposed inside the circuit cavity (11);
wherein a plurality of pairs of the strain gauges (30) are connected with the circuit board (60) through wires.
8. The switch transition resistance monitoring bolt of claim 1, characterized in that one end of the pin head (10) close to the pin body (20) is provided with a first positioning structure (12), and the first positioning structure (12) is used for limiting the circumferential angles of the pin head (10) and the pin body (20);
wherein the first positioning structure (12) is a hexagonal prism.
9. The switch transition resistance monitor bolt of claim 1, wherein the positioning segment (22) comprises:
a second locating formation (221), the second locating formation (221) abutting the pin body (20), the second locating formation (221) serving to limit the circumferential angle of the pin head (10) and the pin body (20);
wherein the second positioning structure (221) is a quadrangular prism.
10. The switch transition resistance monitor bolt of claim 9, wherein the positioning segment (22) further comprises:
a third locating structure (222), the third locating structure (222) abutting the second locating structure (221), the third locating structure (222) for limiting the axial position of the pin head portion (10) and the pin body portion (20);
wherein the third positioning structure (222) is a threaded post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922337690.0U CN211178816U (en) | 2019-12-23 | 2019-12-23 | Switch conversion resistance monitoring bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922337690.0U CN211178816U (en) | 2019-12-23 | 2019-12-23 | Switch conversion resistance monitoring bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211178816U true CN211178816U (en) | 2020-08-04 |
Family
ID=71827285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922337690.0U Active CN211178816U (en) | 2019-12-23 | 2019-12-23 | Switch conversion resistance monitoring bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211178816U (en) |
-
2019
- 2019-12-23 CN CN201922337690.0U patent/CN211178816U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211020 Address after: 710000 Room 401, building 3, West ziweishang floor, No. 5, Taibai South Road, Xi'an, Shaanxi Patentee after: Shaanxi luide road and Bridge Technology Co.,Ltd. Address before: Room 10203, 2 / F, unit 1, building 7, Jinshang Mingcheng phase I, 88 Jinye Road, high tech Zone, Xi'an City, Shaanxi Province, 710065 Patentee before: Shaanxi yingtaihe Electronic Technology Co.,Ltd. Patentee before: Xi'an Xinhui Electronic Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211109 Address after: 710061 No. 10203, floor 2, unit 1, building 7, Jinshang Mingcheng phase I, No. 888, Jinye Road, high tech Zone, Xi'an, Shaanxi Province Patentee after: Shaanxi yingtaihe Electronic Technology Co.,Ltd. Patentee after: Xi'an Xinhui Electronic Co.,Ltd. Address before: 710000 Room 401, building 3, West ziweishang floor, No. 5, Taibai South Road, Xi'an, Shaanxi Patentee before: Shaanxi luide road and Bridge Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right |