CN220751424U - Pantograph pressure detection device - Google Patents
Pantograph pressure detection device Download PDFInfo
- Publication number
- CN220751424U CN220751424U CN202322314501.4U CN202322314501U CN220751424U CN 220751424 U CN220751424 U CN 220751424U CN 202322314501 U CN202322314501 U CN 202322314501U CN 220751424 U CN220751424 U CN 220751424U
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- rod
- pressure sensor
- wire clamp
- contact net
- cantilever
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- 238000001514 detection method Methods 0.000 title claims abstract description 29
- 238000009413 insulation Methods 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 239000012212 insulator Substances 0.000 claims description 8
- 238000005259 measurement Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000003137 locomotive effect Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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- Force Measurement Appropriate To Specific Purposes (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
The utility model discloses a pantograph pressure detection device which comprises two force measuring devices, wherein the force measuring devices are identical in structure and are arranged along the extending direction of a contact net; the force measuring device comprises a fixed bracket, a tension and pressure sensor, an insulating bracket and a contact net wire clamp; one end of the fixed bracket is provided with a flange connecting piece connected with an upright post or a wall surface at the outer side of the track, and the other end extends to the upper side of the track to form a cantilever; the lower part of the cantilever near the side of the flange connecting piece is fixedly connected with a tension pressure sensor; the insulation support is in an inverted T shape or an isosceles triangle shape, the top of the insulation support is hinged to the free end of the cantilever, one end of the bottom of the insulation support is connected with the tension pressure sensor through a steel rope, and the other end of the insulation support is provided with a wire clamp connecting piece for fixing a contact net wire clamp on the insulation support; the contact net wire can simultaneously pass through the contact net wire clamps of the two force measuring devices; the pulling pressure sensor is electrically connected with the ground controller. The device can accurately measure the contact pressure of the bow net in the running state of the vehicle, and is safe, convenient and reliable to use.
Description
Technical Field
The utility model relates to the field of rail vehicle detection, in particular to a pantograph pressure detection device.
Background
In recent years, high-speed electrified railways in China rapidly develop, and in a high-speed electrified railway system, a train must maintain a stable current-receiving state for a long time, so that a certain contact pressure must be maintained between a contact net and a pantograph. The contact pressure is too small, so that a pantograph is easily separated from a contact net and generates an electric arc, and potential safety hazards are formed; the contact pressure is too large, so that the contact net is deformed locally, fatigue damage of the contact net is caused, the service life of the contact net is influenced, abrasion of the pantograph and the contact net is increased, and even an arc net accident is caused.
Currently, there are two main types of pantograph detection techniques used in China: 1. the pantograph and the overhead line system are separated through a structural member, so that the pantograph and the overhead line system are separated and act on a measuring structure, and the pressure of the pantograph is measured; 2. a bow net contact direct measurement mode adopts a single force measuring bracket to contact with a contact net, then when a pantograph passes through the force measuring bracket, the reading of the force measuring bracket is read, the measurement mode is easily influenced by instant impact force, and the measurement precision is difficult to ensure.
Disclosure of Invention
In order to solve the technical problems, the utility model provides the pantograph pressure detection device which can realize on-line dynamic detection of a vehicle, can avoid detection errors caused by instant impact force to a measuring point in a pantograph motion state, and has the advantages of high detection precision, safe and convenient use and good reliability.
Therefore, the technical scheme of the utility model is as follows:
a pantograph pressure detection device comprises two force measuring devices which have the same structure and are arranged along the extending direction of a contact net;
the force measuring device comprises a fixed bracket, a tension and pressure sensor, an insulating bracket and a contact net wire clamp;
one end of the fixed bracket is provided with a flange connecting piece connected with an upright post or a wall surface at the outer side of the track, and the other end of the fixed bracket extends to the upper side of the track to form a cantilever; the lower part of the cantilever near the side of the flange connecting piece is fixedly connected with the tension pressure sensor;
the insulation support is in an inverted T shape or an isosceles triangle shape, the top of the insulation support is hinged to the free end of the cantilever, one end of the bottom of the insulation support is connected with the tension pressure sensor through a steel rope, and a wire clamp connecting piece is arranged at the other end of the insulation support and used for fixing a contact net wire clamp on the insulation support; the contact net wire can simultaneously pass through the contact net wire clamps of the two force measuring devices;
the pulling pressure sensor is electrically connected with the ground controller.
Further, the cantilever comprises a body, a first sliding rail arranged along the length direction of the body, a first sliding block arranged on the first sliding rail and a square tube fixed on the first sliding block, wherein the square tube is sleeved outside the body, wraps the body, the first sliding rail and the first sliding block inside the body, and can slide along the first sliding rail along with the first sliding block to realize the expansion and the contraction on the body; the bottom of the square tube is respectively provided with a bolt connected with the tension pressure sensor and a bearing seat hinged with the insulating bracket.
Further, in order to avoid the interference of natural environment factor of drawing pressure sensor, improve detection precision, prolong its life, draw the pressure sensor outside to be equipped with the sensor cover, will draw the pressure sensor parcel in, and its downside is equipped with the through-hole that is used for the steel cable to pass through.
Further, in order to eliminate the inconvenience of installation caused by machining errors, the top of the tension and pressure sensor is provided with a connecting plate, the connecting plate is provided with a plurality of long strip-shaped fixing holes and arc-shaped fixing holes, the long strip-shaped fixing holes are arranged along the extending direction of the cantilever, and the arc-shaped fixing holes are positioned on the same circumference; the elongated fixing holes and the arc-shaped fixing holes can realize micro-translation or rotation of the position of the tension pressure sensor in a plane connected with the cantilever.
Further, the wire clamp connecting piece is L-shaped, the vertical part of the wire clamp connecting piece is connected with the insulating bracket, and the horizontal part of the wire clamp connecting piece is connected with the contact net wire clamp.
Furthermore, in order to offset the mounting error accumulated to the tail end, the accurate connection between the contact net wire and the detection device is realized, the mounting is convenient, and the vertical part of the wire clamp connecting piece is provided with a longitudinal long hole, so that the longitudinal position movement when the wire clamp connecting piece is connected with the insulating bracket can be realized; the horizontal part is equipped with a plurality of arc through-holes, a plurality of arc through-holes are located same circumference, can realize the horizontal rotation when being connected with the contact net fastener.
Further, the insulating bracket comprises a horizontal rod, a vertical rod and a plurality of insulators arranged on the horizontal rod and the vertical rod; the lower end of the vertical rod is fixedly connected to the center of the horizontal rod, and the upper end of the vertical rod is hinged with the cantilever.
Further, in order to improve structural stability and insulativity of the insulating support, the insulating support comprises a horizontal rod, a vertical rod, a first fixing rod, a second fixing rod and a plurality of insulators arranged on the horizontal rod, the vertical rod, the first fixing rod and the second fixing rod; the lower end of the vertical rod is fixedly connected to the central position of the horizontal rod, and the upper end of the vertical rod is hinged with the cantilever; the two ends of the first fixing rod are respectively fixed at one end of the horizontal rod and the upper end of the vertical rod; the two ends of the second fixing rod are respectively fixed at the other end of the horizontal rod and the upper end of the vertical rod.
Further, for easy installation, the horizontal bars include fixedly connected first horizontal bars and second horizontal bars.
The beneficial effects of the utility model are as follows:
1. the leverage is realized through the hinging of the insulating bracket and the fixed bracket, so that the contact force of the detection position is automatically transmitted to the tension pressure sensor; meanwhile, the sum of the measured values of the pull-up pressure sensors of the two force measuring devices arranged at intervals is calculated, so that the pressure value of the measured position can be accurately obtained; the on-line dynamic detection of the contact pressure of the working position of the pantograph can be realized, the turnover running time of the locomotive is not occupied, the influence of the instant impact force on the measurement precision when the single force measuring device carries out fixed-point detection is avoided, and the accuracy is higher;
2. the lever rotation point, namely the insulation support hinge point, is arranged on the upper part of the insulation support and far away from the high-voltage contact network, and the fixed rod is arranged on the insulation support, so that the number of insulators is increased while the structural stability of the insulation support is enhanced, the insulation property of the insulation support is further improved, the detection device is prevented from being interfered by the high-voltage contact network, and the safety and the reliability are improved;
3. the strip-shaped fixing holes and the circular arc-shaped fixing holes are formed in the connecting plate, so that the tension pressure sensor can conduct micro-translation or rotation of the position on the cantilever, the steel rope connected with the tension pressure sensor is guaranteed to be in a vertical state when connected with the force measuring bracket, and therefore detection accuracy is guaranteed;
4. through setting up the fastener connecting piece for the contact net fastener can carry out the multi-angle fine setting at detection device end, realizes the nimble assembly of contact net fastener, improves detection device's suitability and the convenience of installation.
Drawings
FIG. 1 is a schematic diagram of a pressure detecting device of the pantograph;
FIG. 2 is a schematic diagram of a front view of a single force measuring device;
fig. 3 is a schematic diagram of the structure of the connection plate at the upper part of the pull pressure sensor.
Detailed Description
The technical scheme of the present utility model is described in detail below with reference to the accompanying drawings and examples.
As shown in fig. 1 and 2, a pantograph pressure detection device includes two force measuring devices with the same structure and arranged along the extending direction of a contact net; the force measuring device comprises a fixed bracket 1, a tension and pressure sensor 2, an insulating bracket 3 and a contact net wire clamp 4; one end of the fixed bracket 1 is provided with a flange connecting piece 11 connected with an upright post or a wall surface at the outer side of the track, and the other end extends to the upper side of the track to form a cantilever 12; the cantilever 12 comprises a body 121, a first sliding rail 122 arranged along the length direction of the body 121, a first sliding block 123 arranged on the first sliding rail 122 and a square tube 124 fixed on the first sliding block 123, wherein the square tube is sleeved outside the body 121, wraps the body 121, the first sliding rail 122 and the first sliding block 123 inside and can slide along the first sliding rail 122 along with the first sliding block 123, so that the extension and retraction on the body 121 are realized; the bottom of the square tube 124 is provided with a bolt connected with the tension pressure sensor 2 near the side of the flange connecting piece 11, and the other side is provided with a bearing seat hinged with the insulating bracket 3;
the insulating bracket 3 is in an isosceles triangle shape and comprises a horizontal rod 32, a vertical rod 33, a first fixing rod 34, a second fixing rod 35 and a plurality of insulators, wherein the insulators are respectively arranged on the horizontal rod 32, the vertical rod 33, the first fixing rod 34 and the second fixing rod 35; wherein, the lower end of the vertical rod 33 is fixedly connected to the center of the horizontal rod 32, and the upper end is hinged with the cantilever 12; the two ends of the first fixing rod 34 are respectively fixed at one end of the horizontal rod 32 and the upper end of the vertical rod; the two ends of the second fixing rod 35 are respectively fixed at the other end of the horizontal rod 32 and the upper end of the vertical rod; one end of the horizontal rod 32 is connected with the tension and pressure sensor 2 through a steel rope 22, and the other end is provided with a wire clamp connecting piece 31; preferably, the horizontal rod 32 comprises a first horizontal rod 321 and a second horizontal rod 322, the first horizontal rod 321 and the second horizontal rod 322 are fixedly connected, and the lower end of the vertical rod 33 is fixedly connected at the joint of the first horizontal rod 321 and the second horizontal rod 322;
the wire clamp connecting piece 31 is L-shaped, a vertical part of the wire clamp connecting piece is provided with a longitudinal long hole, the vertical part is connected with the insulating bracket 3, the fixing position of the wire clamp connecting piece and the insulating bracket 3 can be adjusted along the long hole direction, a horizontal part of the wire clamp connecting piece is provided with a plurality of arc-shaped through holes, the arc-shaped through holes are positioned on the same circumference, the arc-shaped through holes are connected with the contact wire clamp 4, and the fixing position of the wire clamp connecting piece and the contact wire clamp 4 can be adjusted along the circumference of the arc-shaped through holes;
as shown in fig. 3, in order to avoid the interference of natural environmental factors such as wind, frost, rain, snow and the like, the detection precision is improved, the service life of the pull pressure sensor is prolonged, a sensor cover 23 is arranged on the outer side of the pull pressure sensor 2, the pull pressure sensor is wrapped in the sensor cover, and a through hole for the steel rope 22 to pass through is arranged on the lower side of the sensor cover;
in order to eliminate the inconvenience of installation caused by machining errors, the top of the tension and pressure sensor 2 is provided with a connecting plate 21, the connecting plate 21 is provided with a plurality of long strip-shaped fixing holes 211 and arc-shaped fixing holes 212, the long strip-shaped fixing holes 211 are arranged along the extending direction of the cantilever 12, and the arc-shaped fixing holes 212 are positioned on the same circumference; the strip-shaped fixing holes 211 and the arc-shaped fixing holes 212 can realize the micro-translation or rotation of the position of the pull pressure sensor 2 in the plane connected with the cantilever 12;
the contact net wire can simultaneously pass through the contact net wire clamps 4 of the two force measuring devices; and the two pulling pressure sensors 2 are electrically connected with a ground controller.
As another implementation manner of the scheme, the insulating bracket 3 is in an inverted T shape and comprises a horizontal rod 32, a vertical rod 33 and a plurality of insulators arranged on the horizontal rod 32 and the vertical rod 33; wherein, the lower end of the vertical rod 33 is fixedly connected to the center of the horizontal rod 32, and the upper end is hinged with the cantilever 12;
preferably, the horizontal rod 32 includes a first horizontal rod 321 and a second horizontal rod 322, the first horizontal rod 321 and the second horizontal rod 322 are fixedly connected, and the lower end of the vertical rod 33 is fixedly connected to the connection part of the first horizontal rod 321 and the second horizontal rod 322.
After the two contact net wire clamps 4 clamp the contact net wires, the contact net wire area between the two contact net wire clamps 4 is a detection area, when an operating locomotive passes through the detection area, a pantograph on the locomotive supports the contact net wires upwards from the bottom, so that contact pressure is generated between the contact net and the pantograph, and the contact pressure is transmitted to the two contact net wire clamps 4 through the contact net wires, so that the contact pressure acts on one end of the two insulating supports 3 connected with the two contact net wire clamps 4; because the insulating support 3 can rotate along the hinge point of the insulating support and the fixed support 1 as an axis to form a lever structure, when one end of the insulating support 3 is acted by the upward pushing force of the contact net wire clamp 4, the other end of the insulating support 3 generates a downward pulling force, and the pulling force acts on the pulling pressure sensor 2 through the steel wire 22, so that the pulling pressure sensor 2 generates detection data and transmits the detection data to the ground controller in real time to obtain the force detected by the two force measuring devices, and the two real-time detected forces are added to obtain the contact pressure of the pantograph. Compared with the prior art, the device can realize on-line dynamic detection, can avoid the influence of instantaneous impact force on measurement precision when a single force measuring device carries out fixed-point detection, and has higher safety and accuracy.
For convenience in explanation and accurate definition in the appended claims, the terms "upper", "lower", "left" and "right" are used to describe exemplary embodiments with respect to the positions of the features.
The foregoing descriptions of specific exemplary embodiments of the present utility model have been presented for purposes of illustration and description. The foregoing description is not intended to be exhaustive or to limit the utility model to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the utility model and its practical application to thereby enable others skilled in the art to make and utilize the utility model in various exemplary embodiments and with various alternatives and modifications. It is intended that the scope of the utility model be defined by the following claims and their equivalents.
Claims (9)
1. The utility model provides a pantograph pressure detection device which characterized in that: the device comprises two force measuring devices which have the same structure and are arranged along the extending direction of the contact net;
the force measuring device comprises a fixed support (1), a tension pressure sensor (2), an insulating support (3) and a contact net wire clamp (4);
one end of the fixed bracket (1) is provided with a flange connecting piece (11) connected with an upright post or a wall surface on the outer side of the track, and the other end extends to the upper side of the track to form a cantilever (12); the lower part of the cantilever near the side of the flange connecting piece (11) is fixedly connected with the tension pressure sensor (2);
the insulating bracket (3) is in an inverted T shape or an isosceles triangle shape, the top of the insulating bracket is hinged to the free end of the cantilever (12), one end of the bottom of the insulating bracket is connected with the tension pressure sensor (2) through a steel rope (22), and a wire clamp connecting piece (31) is arranged at the other end of the insulating bracket and used for fixing the contact net wire clamp (4) on the insulating bracket (3); the contact net wire can simultaneously pass through the contact net wire clamps (4) of the two force measuring devices;
the pulling pressure sensor (2) is electrically connected with a ground controller.
2. A pantograph pressure detecting device as set forth in claim 1, wherein: the cantilever (12) comprises a body (121), a first sliding rail (122) arranged along the length direction of the body (121), a first sliding block (123) arranged on the first sliding rail (122) and a square tube (124) fixed on the first sliding block (123), wherein the square tube is sleeved outside the body (121), wraps the body (121), the first sliding rail (122) and the first sliding block (123) in the body, and can slide along the first sliding rail (122) along with the first sliding block (123) to realize the extension and retraction on the body (121); the bottom of the square tube (124) is respectively provided with a bolt connected with the tension and pressure sensor (2) and a bearing seat hinged with the insulating bracket (3).
3. A pantograph pressure detecting device as set forth in claim 1, wherein: the outside of the tension pressure sensor (2) is provided with a sensor cover (23), the tension pressure sensor is wrapped inside, and the lower side of the tension pressure sensor is provided with a through hole for a steel rope (22) to pass through.
4. A pantograph pressure detecting device as set forth in claim 1, wherein: the top of the tension pressure sensor (2) is provided with a connecting plate (21), the connecting plate (21) is provided with a plurality of long strip-shaped fixing holes (211) and arc-shaped fixing holes (212), the long strip-shaped fixing holes (211) are arranged along the extending direction of the cantilever (12), and the arc-shaped fixing holes (212) are positioned on the same circumference; the strip-shaped fixing holes (211) and the arc-shaped fixing holes (212) can realize the translation or rotation of the position of the tension pressure sensor (2) in a plane connected with the cantilever (12).
5. A pantograph pressure detecting device as set forth in claim 1, wherein: the wire clamp connecting piece (31) is L-shaped, the vertical part of the wire clamp connecting piece is connected with the insulating support (3), and the horizontal part of the wire clamp connecting piece is connected with the contact net wire clamp (4).
6. The pantograph pressure detecting device according to claim 5, wherein: the vertical part of the wire clamp connecting piece (31) is provided with a longitudinal long hole, so that the longitudinal position movement of the wire clamp connecting piece when being connected with the insulating bracket (3) can be realized; the horizontal part is provided with a plurality of arc through holes, and the arc through holes are positioned on the same circumference, so that horizontal rotation can be realized when the contact net wire clamp (4) is connected.
7. A pantograph pressure detecting device as set forth in claim 1, wherein: the insulating bracket (3) comprises a horizontal rod (32), a vertical rod (33) and a plurality of insulators arranged on the horizontal rod (32) and the vertical rod (33); the lower end of the vertical rod (33) is fixedly connected to the center of the horizontal rod (32), and the upper end of the vertical rod is hinged with the cantilever (12).
8. A pantograph pressure detecting device as set forth in claim 1, wherein: the insulation support (3) comprises a horizontal rod (32), a vertical rod (33), a first fixing rod (34), a second fixing rod (35) and a plurality of insulators arranged on the horizontal rod (32), the vertical rod (33), the first fixing rod (34) and the second fixing rod (35); the lower end of the vertical rod (33) is fixedly connected to the center of the horizontal rod (32), and the upper end of the vertical rod is hinged with the cantilever (12); two ends of the first fixing rod (34) are respectively fixed at one end of the horizontal rod (32) and the upper end of the vertical rod; two ends of the second fixing rod (35) are respectively fixed at the other end of the horizontal rod (32) and the upper end of the vertical rod.
9. A pantograph pressure detecting device according to claim 7 or 8, wherein: the horizontal rods (32) comprise a first horizontal rod (321) and a second horizontal rod (322) which are fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322314501.4U CN220751424U (en) | 2023-08-28 | 2023-08-28 | Pantograph pressure detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322314501.4U CN220751424U (en) | 2023-08-28 | 2023-08-28 | Pantograph pressure detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220751424U true CN220751424U (en) | 2024-04-09 |
Family
ID=90571045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322314501.4U Active CN220751424U (en) | 2023-08-28 | 2023-08-28 | Pantograph pressure detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220751424U (en) |
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2023
- 2023-08-28 CN CN202322314501.4U patent/CN220751424U/en active Active
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