CN111896158A - Self-centering switch conversion resistance sensor - Google Patents
Self-centering switch conversion resistance sensor Download PDFInfo
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- CN111896158A CN111896158A CN201910387837.9A CN201910387837A CN111896158A CN 111896158 A CN111896158 A CN 111896158A CN 201910387837 A CN201910387837 A CN 201910387837A CN 111896158 A CN111896158 A CN 111896158A
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- induction coil
- pin
- pull rod
- iron
- fork
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
Abstract
The invention provides a self-centering turnout conversion resistance sensor which comprises a cylindrical pin and an induction coil, wherein the induction coil is arranged around the circumference of the cylindrical pin, and when the cylindrical pin is inserted into pin holes of a fork iron and an action pull rod, the induction coil is positioned in the pin hole of the fork iron and/or the pin hole of the action pull rod; the two opposite side walls of the induction coil along the acting force induction direction are respectively provided with a first section so as to form two force contact areas on the induction coil and the two adjacent side walls of the first section, the first section is vertical to the acting force induction direction of the induction coil, and when the action pull rod applies acting force to the fork-shaped iron, the two force contact areas are in contact with the fork-shaped iron and/or the hole wall of the pin hole of the action pull rod. Therefore, the contact area of the induction coil, the forked iron and the hole wall of the pin hole of the action pull rod is effectively reduced, the resultant force direction of the action pull rod acting on the forked iron through the cylindrical pin is coincident or nearly coincident with the acting force induction direction of the induction coil under the acting force of the action pull rod, and the accuracy of detecting various conversion resistances of the turnout is effectively improved.
Description
Technical Field
The invention relates to the field of railway maintenance equipment, in particular to a self-centering turnout conversion resistance sensor.
Background
During the operation of the railway train and the entering or leaving of the railway train, the railway train needs to be switched to operate on different tracks. The switch of track department is provided with the switch, thereby can realize the conversion of switch automatically through the goat and 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 the turnout need to be detected regularly, specifically comprising static force in a locking state, resistance force when the turnout is converted normally, maximum output force (friction force) of a point switch, 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, an action pull rod of a point machine is connected with a forked iron of a point so as to drag the point conversion, the action pull rod is connected with the forked iron through a connecting pin, the connecting pin is pulled out when the point conversion resistance is detected, a point conversion resistance sensor is inserted into a pin hole at the connecting part of the action pull rod of the point machine and the forked iron of the point, the shape of the sensor is similar to that of the connecting pin, and the resistance when the point machine pulls the point can be detected through the sensor.
The existing turnout conversion resistance sensor has a specific acting force detection direction which is generally a specific diameter direction of the sensor, and the outer diameter of an induction coil on the sensor is very close to the inner diameter of a pin hole of an action pull rod or a fork iron, so that the point contact of the induction coil and the pin hole of the action pull rod or the fork iron is difficult to realize.
Disclosure of Invention
The invention mainly aims to provide a self-centering turnout conversion resistance sensor to solve the problem that detection data is inaccurate due to detection direction deviation of the turnout conversion resistance sensor in the prior art.
In order to achieve the above object, the present invention provides a self-centering switch transition resistance sensor, comprising: the cylindrical pin is used for penetrating through a pin hole of a fork iron of the railway turnout and a pin hole of an action pull rod of the point switch; the induction coil is arranged around the circumference of the cylindrical pin, and is positioned in the pin hole of the forked iron and/or the pin hole of the action pull rod when the cylindrical pin is inserted into the pin hole of the forked iron and the pin hole of the action pull rod; the two opposite side walls of the induction coil along the first preset diameter direction are respectively provided with a first tangent plane so as to form two force contact areas on the induction coil and the two adjacent side walls of the first tangent plane, and when the action pull rod applies acting force to the fork-shaped iron, the two force contact areas are contacted with the hole walls of the pin holes of the fork-shaped iron and/or the action pull rod; the first preset diameter direction is the acting force induction direction of the induction coil, and the first tangent plane is perpendicular to the first preset diameter direction.
Furthermore, a plurality of induction coils are arranged at intervals along the axial direction of the cylindrical pin; when the cylindrical pin is inserted into the pin holes of the fork iron and the action pull rod, the plurality of induction coils are respectively positioned in the pin holes of the fork iron and the action pull rod.
Further, each induction coil comprises a first induction coil; when the cylindrical pin is inserted into the pin holes of the fork iron and the action pull rod, the first induction coil is positioned in the pin hole of the fork iron.
Further, each induction coil also comprises a second induction coil; when the cylindrical pin is inserted into the pin holes of the fork iron and the action pull rod, the second induction coil is positioned in the pin hole of the action pull rod;
furthermore, the number of the first induction coils is two, and the number of the second induction coils is one; wherein, the second induction coil is located between two first induction coils.
Furthermore, two opposite side walls of the induction coil along a second preset diameter direction are respectively provided with a second tangent plane, the second preset diameter direction is vertical to the first preset diameter direction, and the second tangent plane is vertical to the second preset diameter direction; the two force contact areas are located on the side wall of the induction coil between each first tangent plane and two adjacent second tangent planes.
Further, the self-centering switch transition resistance sensor further comprises: and the handle part is arranged at the first end of the cylindrical pin, and when the cylindrical pin is inserted into the pin holes of the fork iron and the action pull rod, the lower end surface of the handle part is abutted with the upper end surface of the fork iron so as to position the axial position of the cylindrical pin.
Further, the self-centering switch transition resistance sensor further comprises: and the magnet block is arranged on the lower end surface of the handle part, and when the cylindrical pin is inserted into the pin holes of the fork iron and the action pull rod, the magnet block is adsorbed on the upper surface of the fork iron so as to position the circumferential position of the cylindrical pin.
Further, the magnet piece is a plurality of, and a plurality of magnet pieces divide into two sets: the handle part is cylindrical, and the two groups of magnet blocks are symmetrically arranged along the diameter direction of the handle part.
Furthermore, a locking pin hole is formed in the second end of the cylindrical pin, and the locking pin hole is formed in the diameter direction of the cylindrical pin.
The self-centering turnout conversion resistance sensor applying the technical scheme of the invention comprises a cylindrical pin and an induction coil, wherein the cylindrical pin is used for penetrating through a pin hole of a forked iron of a railway turnout and a pin hole of an action pull rod of a point switch; the induction coil is arranged around the circumference of the cylindrical pin, and when the cylindrical pin is inserted into the pin hole of the forked iron and the pin hole of the action pull rod, the induction coil is positioned in the pin hole of the forked iron and/or the pin hole of the action pull rod; the induction coil is provided with two opposite side walls along a first preset diameter direction, the two opposite side walls along the first preset diameter direction are respectively provided with a first tangent plane so as to form two force contact areas with the two side walls adjacent to the first tangent plane on the induction coil, the first preset diameter direction is the acting force induction direction of the induction coil, the first tangent plane is vertical to the first preset diameter direction, and when the action pull rod applies acting force to the forked iron, the two force contact areas are in contact with the forked iron and/or the hole wall of the pin hole of the action pull rod. Therefore, the contact area of the induction coil and the pin hole of the forked iron and the hole wall of the pin hole of the action pull rod is effectively reduced, under the action of the action pull rod, the resultant force direction of the two force contact areas acting on the pin hole of the forked iron and/or the action pull rod is coincident or nearly coincident with the action force induction direction of the induction coil, so that the resultant force direction of the action pull rod acting on the forked iron through the cylindrical pin is coincident or nearly coincident with the action force induction direction of the induction coil, and the self-centering function of the induction coil is realized. The accuracy of detecting the switching resistance of each item of the turnout is effectively improved. The problem of switch conversion resistance sensor among the prior art have the detection direction deviation and lead to the inaccurate detected data is solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, 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 cross-sectional view of an alternative self-centering switch transition resistance sensor installed in the pin hole of the cross-bar of a railroad switch and the pin hole of the actuating pull rod of a switch machine in accordance with an embodiment of the present invention; and
FIG. 2 is a schematic side view of an alternative self-centering switch transition resistance sensor mounted in the pin holes of the cross-bar of a railroad switch and the pin holes of the actuating pull rods of a switch machine in accordance with an embodiment of the present invention;
FIG. 3 is a schematic view of a first cross-section of an alternative first embodiment of a self-centering switch transition resistance sensor in accordance with an embodiment of the present invention;
FIG. 4 is a schematic diagram of a first cross-sectional configuration of an alternative second embodiment of a self-centering switch transition resistance sensor in accordance with an embodiment of the present invention;
FIG. 5 is a schematic illustration of a second cross-sectional configuration of an alternative first embodiment of a self-centering switch transition resistance sensor in accordance with an embodiment of the present invention; and
figure 6 is a schematic diagram of a second cross-section of an alternative second embodiment of a self-centering switch transition resistance sensor in accordance with an embodiment of the present invention.
Wherein the figures include the following reference numerals:
10. a cylindrical pin; 11. a locking pin hole; 20. an induction coil; 21. a first induction coil; 22. a second induction coil; 23. a first section; 24. a force contact zone; 25. a second section; 30. fork iron; 40. an action pull rod; 50. a handle portion; 60. and a magnet block.
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 embodiments with reference to the attached drawings.
The self-centering switch-over resistance sensor according to the embodiment of the invention, as shown in fig. 1 to 4, comprises a cylindrical pin 10 and an induction coil 20, wherein the cylindrical pin 10 is used for being arranged in a pin hole of a fork iron 30 of a railway switch and a pin hole of an action pull rod 40 of a switch machine in a penetrating way; the induction coil 20 is arranged around the circumference of the cylindrical pin 10, and when the cylindrical pin 10 is inserted into the pin hole of the fork iron 30 and the pin hole of the action pull rod 40, the induction coil 20 is positioned in the pin hole of the fork iron 30 and/or the pin hole of the action pull rod 40; the two opposite side walls of the induction coil 20 along the first preset diameter direction are respectively provided with a first tangent plane 23 so as to form two force contact areas 24 on the two adjacent side walls of the induction coil 20 and the first tangent plane 23, the first preset diameter direction is the acting force induction direction of the induction coil 20, the first tangent plane 23 is perpendicular to the first preset diameter direction, and when the action pull rod 40 exerts acting force on the fork-shaped iron 30, the two force contact areas 24 are in contact with the hole walls of the pin holes of the fork-shaped iron 30 and/or the action pull rod 40. Therefore, the contact area of the induction coil 20 and the pin hole of the fork iron 30 and the hole wall of the pin hole of the action pull rod 40 is effectively reduced, under the action of the action pull rod 40, the resultant force direction of the two force contact areas 24 acting on the hole wall of the fork iron and/or the pin hole of the action pull rod is coincided or approximately coincided with the action force induction direction of the induction coil, so that the resultant force direction of the action pull rod 40 acting on the fork iron 30 through the cylindrical pin 10 is coincided or approximately coincided with the action force induction direction of the induction coil 20, and the self-centering function of the induction coil 20 is realized. The accuracy of detecting the switching resistance of each item of the turnout is effectively improved. The problem of switch conversion resistance sensor among the prior art have the detection direction deviation and lead to the inaccurate detected data is solved.
During the concrete implementation, induction coil 20 is a plurality of, and a plurality of induction coils 20 set up and the interval is equal between two adjacent induction coils 20 along the axis direction interval of cylindricality round pin 10: when the cylindrical pin 10 is inserted into the pin holes of the fork iron 30 and the action pull rod 40, the plurality of induction coils 20 are respectively positioned in the pin holes of the fork iron 30 and the action pull rod 40, so that the switching resistance of the turnout is detected through a plurality of point positions.
Specifically, each induction coil 20 includes two first induction coils 21 and two second induction coils 22, the number of the first induction coils 21 is two, the number of the second induction coils 22 is one, the second induction coil 22 is located between the two first induction coils 21, when the cylindrical pin 10 is inserted into the pin holes of the fork iron 30 and the action pull rod 40, the two first induction coils 21 are respectively located in the two pin holes of the fork iron 30, and the second induction coil 22 is located in the pin hole of the action pull rod 40; therefore, the acting force between the fork iron 30 and the first induction coil 21 and the acting force between the action pull rod 40 and the second induction coil 22 are detected to obtain the switching resistance of the turnout.
In practical applications, as shown in fig. 3 to 6, the first tangent plane 23 is formed on each of the two first induction coils 21, and the second induction coil 22 may or may not have the first tangent plane 23. The first tangent plane 23 is processed by each induction coil 20, so that the accuracy of detecting the switching resistance of each turnout can be further improved. The first cut surface 23 may be a plane surface, or may be a curved surface or an undulated surface recessed toward the inside of the cylindrical pin 10.
Further, as shown in fig. 3 to fig. 6, two opposite sidewalls of the induction coil 20 along a second predetermined diameter direction respectively have a second cut surface 25, the second predetermined diameter direction is perpendicular to the first predetermined diameter direction, and the second cut surface 25 is perpendicular to the second predetermined diameter direction; two force contact areas 24 on both sides of the first cut surface 23 are located on the side wall of the induction coil 20 between each first cut surface 23 and two adjacent second cut surfaces 25. The second tangent plane 25 is processed on the induction coil 20, so that the force contact areas 24 are concentrated in a narrow area between the first tangent plane 23 and the second tangent plane 25, when the action pull rod 40 exerts an action force on the fork-shaped iron 30, the contact areas of the two force contact areas 24 and the hole walls of the pin holes of the fork-shaped iron 30 and the action pull rod 40 are further reduced, each induction coil 20 can better realize self-centering, finally, the action force direction of the action pull rod 40 is coincided with the action force induction direction of the induction coil 20 or is approximately coincided to the maximum extent, and the accuracy of detection of each conversion resistance of the turnout is improved.
In practical applications, as shown in fig. 3 to 6, the two first induction coils 21 are both processed with the second tangent plane 25, and the second induction coil 22 may be processed with the second tangent plane 25 or not processed with the second tangent plane 25. The second tangent plane 25 is processed by each induction coil 20, so that the accuracy of detecting the switching resistance of each item of the turnout can be further improved.
Further, the self-centering switch-over resistance sensor further comprises a handle portion 50, the handle portion 50 is a cylindrical shell structure, the handle portion 50 is arranged at the first end of the cylindrical pin 10, electronic components are arranged in the handle portion 50, and signal lines of a detection instrument are connected to the handle portion 50 and connected with the electronic components in the handle portion 50. When the stud pin 10 is inserted into the pin holes of the fork iron 30 and the actuating lever 40, the lower end surface of the handle portion 50 abuts against the upper end surface of the fork iron 30 so that the axial position of the stud pin 10 can be positioned, and thus each of the induction coils 20 can be positioned to a predetermined detection position.
In addition, the handle portion 50 is cylindrical, and in order to quickly position the circumferential position of the cylindrical pin 10 when the cylindrical pin 10 is inserted, the self-centering switch conversion resistance sensor further includes a magnet block 60, the magnet block 60 is provided in a plurality of pairs, and each pair of the magnet blocks 60 is provided on the lower end surface of the handle portion 50. The magnets of each pair of magnet blocks 60 are oppositely poled, i.e., one is N-pole and the other is S-pole, so that each pair of magnet blocks 60 has the greatest magnetic properties. The magnet blocks 60 of the present embodiment are two pairs, and the two pairs of magnet blocks 60 are symmetrically disposed in the diameter direction of the handle portion 50, so that the adsorption force is balanced. When the column pins 10 are inserted into the pin holes of the fork iron 30 and the operation rod 40, each pair of magnet blocks 60 can be attracted to the upper surface of the fork iron 30 to position the circumferential position of the column pins 10, and the urging force sensing direction of each induction coil 20 and the urging force direction of the operation rod 40 are aligned as close as possible.
In addition, in order to further stabilize the circumferential position of each induction coil 20 when the cylindrical pin 10 is inserted into the pin holes of the fork 30 and the actuating lever 40, the lower end surface of the handle portion 50 is processed into a rough surface, thereby increasing the frictional resistance with the upper surface of the fork 30, preventing the cylindrical pin 10 from being rotated freely, and ensuring the accurate position of each induction coil 20.
Further, the second end of the cylindrical pin 10 is provided with a locking pin hole 11, the locking pin hole 11 is formed along the diameter direction of the cylindrical pin 10, and when the cylindrical pin 10 is inserted into the pin holes of the fork iron 30 and the action link 40, the cylindrical pin 10 is prevented from being accidentally removed from the pin holes of the fork iron 30 and the action link 40 by inserting the locking pin into the locking pin hole 11.
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. A self-centering switch transition resistance sensor, comprising:
the cylindrical pin (10) is used for being arranged in a pin hole of a fork iron (30) of a railway turnout and a pin hole of an action pull rod (40) of a point switch in a penetrating mode;
the induction coil (20) is arranged around the circumference of the cylindrical pin (10), and when the cylindrical pin (10) is inserted into the pin hole of the fork iron (30) and the pin hole of the action pull rod (40), the induction coil (20) is positioned in the pin hole of the fork iron (30) and/or the pin hole of the action pull rod (40);
the induction coil (20) is provided with a first tangent plane (23) on two opposite side walls along a first preset diameter direction of the induction coil (20) respectively so as to form two force contact areas (24) on the two side walls of the induction coil (20) adjacent to the first tangent plane (23), and when the action pull rod (40) applies acting force to the fork-shaped iron (30), the two force contact areas (24) are contacted with the hole walls of the pin holes of the fork-shaped iron (30) and/or the action pull rod (40);
the first preset diameter direction is the acting force induction direction of the induction coil (20), and the first tangent plane (23) is perpendicular to the first preset diameter direction.
2. The self-centering switch transition resistance sensor according to claim 1, characterized in that the induction coil (20) is provided in plurality, and the induction coils (20) are arranged at intervals along the axial direction of the cylindrical pin (10);
when the cylindrical pin (10) is inserted into the pin holes of the fork iron (30) and the action pull rod (40), the induction coils (20) are respectively positioned in the pin holes of the fork iron (30) and the action pull rod (40).
3. A self-centering switch transition resistance sensor as claimed in claim 2, wherein each said inductor (20) comprises a first inductor (21);
when the cylindrical pin (10) is inserted into pin holes of the fork iron (30) and the action pull rod (40), the first induction coil (21) is positioned in the pin hole of the fork iron (30).
4. A self-centering switch transition resistance sensor as claimed in claim 3, wherein each said inductor (20) further comprises a second inductor (22);
when the cylindrical pin (10) is inserted into the pin holes of the fork iron (30) and the action pull rod (40), the second induction coil (22) is positioned in the pin hole of the action pull rod (40).
5. Self-centering switch transition resistance sensor according to claim 4, characterized in that said first induction coils (21) are two and said second induction coil (22) is one;
wherein the second induction coil (22) is located between the two first induction coils (21).
6. The self-centering switch transition resistance transducer according to claim 1, wherein said induction coil (20) has a second cut surface (25) on each of two opposite side walls along a second predetermined diametrical direction thereof, said second predetermined diametrical direction being perpendicular to said first predetermined diametrical direction, said second cut surface (25) being perpendicular to said second predetermined diametrical direction;
wherein two force contact areas (24) are located on the side walls of the induction coil (20) between each first cut surface (23) and two adjacent second cut surfaces (25).
7. The self-centering switch transition resistance sensor of claim 1, further comprising:
and the handle part (50) is arranged at the first end of the cylindrical pin (10), and when the cylindrical pin (10) is inserted into the pin holes of the fork iron (30) and the action pull rod (40), the lower end surface of the handle part (50) is abutted with the upper end surface of the fork iron (30) so as to position the axial position of the cylindrical pin (10).
8. The self-centering switch transition resistance sensor of claim 7, further comprising:
and a magnet block (60) provided on a lower end surface of the handle portion (50), wherein when the cylindrical pin (10) is inserted into the pin holes of the fork iron (30) and the actuating lever (40), the magnet block (60) is adsorbed on an upper surface of the fork iron (30) to position a circumferential position of the cylindrical pin (10).
9. The self-centering switch transition resistance sensor of claim 8, wherein the magnet blocks (60) are in pairs;
the handle part (50) is cylindrical, and each pair of the magnet blocks (60) is arranged at intervals along the circumferential direction of the handle part (50).
10. The self-centering switch transition resistance sensor according to claim 7, wherein the second end of the cylindrical pin (10) is provided with a locking pin hole (11), and the locking pin hole (11) is formed along the diameter direction of the cylindrical pin (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910387837.9A CN111896158A (en) | 2019-05-05 | 2019-05-05 | Self-centering switch conversion resistance sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910387837.9A CN111896158A (en) | 2019-05-05 | 2019-05-05 | Self-centering switch conversion resistance sensor |
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| Publication Number | Publication Date |
|---|---|
| CN111896158A true CN111896158A (en) | 2020-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910387837.9A Pending CN111896158A (en) | 2019-05-05 | 2019-05-05 | Self-centering switch conversion resistance sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112611487A (en) * | 2020-12-11 | 2021-04-06 | 交控科技股份有限公司 | Turnout switch machine torque measuring device, resistance measuring method and traffic facility |
-
2019
- 2019-05-05 CN CN201910387837.9A patent/CN111896158A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112611487A (en) * | 2020-12-11 | 2021-04-06 | 交控科技股份有限公司 | Turnout switch machine torque measuring device, resistance measuring method and traffic facility |
| CN112611487B (en) * | 2020-12-11 | 2022-05-10 | 交控科技股份有限公司 | Turnout switch machine torque measuring device, resistance measuring method and traffic facility |
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