CN110979016A - Limiting and sensing device for pantograph - Google Patents
Limiting and sensing device for pantograph Download PDFInfo
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- CN110979016A CN110979016A CN201911301372.7A CN201911301372A CN110979016A CN 110979016 A CN110979016 A CN 110979016A CN 201911301372 A CN201911301372 A CN 201911301372A CN 110979016 A CN110979016 A CN 110979016A
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- pantograph
- position sensor
- linear motion
- motion mechanism
- motor connector
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
- B60L5/18—Current collectors for power supply lines of electrically-propelled vehicles using bow-type collectors in contact with trolley wire
- B60L5/22—Supporting means for the contact bow
- B60L5/28—Devices for lifting and resetting the collector
- B60L5/30—Devices for lifting and resetting the collector using springs
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
A pantograph position limit sensing device, comprising: the motor connector, a movable sliding block, an elastic sheet, a positioning column and a connecting shaft are sequentially arranged together with the motor connector; wherein, one end of the motor connector is provided with a cylinder; and a second position sensor is installed, and the second position sensor is connected with a control circuit of the pantograph; the movable sliding block is arranged in the motor connector, and a guide ring is sleeved on the movable sliding block; the small end of the connecting shaft is connected with a linear motion mechanism, and the linear motion mechanism is connected with a linkage transmission mechanism; and a first position sensor is arranged on the side surface of the linear motion mechanism; through the second position sensor and the first position sensor that set up respectively for whether the bow goes up and down to target in place is judged to accurate bow lift position that detects the pantograph. The invention not only can accurately detect whether the pantograph bow and the vehicle-mounted current collector are in good contact, but also solves the problem that the motor is damaged due to the instant increase of current when the pantograph bow and the current collector are in compression joint.
Description
Technical Field
The invention belongs to the field of electric power engineering charging, and particularly relates to a pantograph limiting and sensing device.
Background
At present, with the development of the electric automobile industry and the gradual departure and improvement of relevant charging policies of the country and the place, public charging infrastructure has been developed greatly. Along with that, the high-power charging pantograph (namely, the power receiving mode) gradually comes into the vision of people, and the power receiving mode becomes an emerging charging mode which breaks through the traditional charging mode. However, most current pantographs adopt pantograph-descending type pantograph, so that the vehicle-mounted current collector and the ground can have different distances, and the pantograph head of the pantograph cannot be matched with the vehicle-mounted current collectors with different heights in a self-adaptive manner; and because the bow-lifting position and the bow-lowering position can not be accurately judged, the bow of the pantograph and the vehicle-mounted current collector are easily caused, the deviation of the pressing position causes bad contact or excessive bow lowering causes damage to devices of the pantograph caused by the instant increase of current when the bow is in compression joint with the current collector, and meanwhile, the pantograph bow is not firmly overlapped with the vehicle-mounted current collector, so that the potential safety hazard problems of ignition, arc discharge and the like are easily caused.
Disclosure of Invention
The invention aims to provide a limiting and sensing device for a pantograph, which aims to solve the technical problems of accurately detecting whether a pantograph head of the pantograph is in good contact with a vehicle-mounted current collector or not and protecting a motor from being damaged due to instantaneous increase of current when the pantograph head is in pressure contact with the current collector.
In order to achieve the purpose, the specific technical scheme of the pantograph limiting and sensing device is as follows:
a pantograph limit induction device is provided with: an induction device, the induction device comprising: the motor connector, a movable sliding block, a disc-shaped elastic sheet, a positioning column and a connecting shaft are sequentially arranged together with the motor connector; wherein the content of the first and second substances,
one end of the motor connector is provided with a cylinder with an inner hole in parallel, and the other end of the motor connector is provided with a bolt and nut pair; the motor connecting head is relatively provided with a mounting hole for the sensor bracket to pass through, and a second position sensor is arranged in the mounting hole and connected with a control circuit of the pantograph;
the movable sliding block is arranged in a cylindrical inner hole of the motor connector, a plurality of grooves are formed in a large-end cylinder of the movable sliding block at certain intervals, and guide rings are correspondingly sleeved in the grooves of the grooves;
the side section of the connecting shaft is of a stepped shaft structure opposite to the positioning column; the small end of the connecting shaft is connected with a linear motion mechanism, and the linear motion mechanism is connected with a linkage transmission mechanism in parallel; a first position sensor is arranged on the side surface of the linear motion mechanism; through setting up the second position sensor in sensor support department, the first position sensor of linear motion mechanism department respectively for whether the bow goes up and down to target in place is judged to accurate bow lift position that detects the pantograph.
Furthermore, the motor connector is of an inverted П -shaped structure, one end of the inverted П structure is provided with a cylinder with an inner hole in parallel, the tail end of the inverted П structure is provided with a through hole for a bolt and nut pair to pass through, the bolt and nut pair is arranged in the hole, and the head end of the inverted П structure is provided with a mounting hole for the sensor support to pass through.
Furthermore, the sensor bracket is in an П -shaped structure opposite to the motor connector, wherein a second position sensor is arranged in the mounting hole on the upper surface, and the mounting hole on the lower surface is connected with the motor connector.
Furthermore, the side section of the movable sliding block is a step-shaped shaft in a shape of a cone and is arranged in a cylindrical inner hole of the motor connector through a gasket and a clamp spring; the stepped shaft structure of the movable sliding block is gradually reduced; the gasket and the guide ring are made of polytetrafluoroethylene materials.
Furthermore, the side section of the positioning column is of a structure in a shape of a horn.
Further, the second position sensor is an inductive sensor; when the push rod in the linear motion mechanism makes the disc-shaped elastic sheet deform to zero through load stress, the second position sensor transmits the sensing signal to the control circuit of the pantograph, and the control circuit of the pantograph controls the stop of transmission so as to realize that the pantograph is lowered in place.
Furthermore, the linear motion mechanism is made of metal materials, and the side surface of the linear motion mechanism is provided with a plurality of groove positions for installing the first position sensor; the linear motion mechanism is a mechanism internally provided with a transmission gear, a high-efficiency ball screw and a static load brake; the linear motion mechanism is provided with a first position sensor, and the first position sensor is arranged at the side position of the linear motion mechanism.
Furthermore, a driving controller is arranged in the linkage transmission mechanism; when a gear in the linkage transmission mechanism rotates forwards, the forward rotation of the gear is transmitted to a high-efficiency ball screw of the linear motion mechanism, the high-efficiency ball screw rotates to push a linear push rod to extend forwards, under the reaction of force, a movable sliding block compresses the deformation of a disc-shaped elastic sheet to zero, a second position sensor receives a signal and transmits the obtained signal to a driving controller, at the moment, the linkage transmission mechanism stops rotating, and the bow reduction is completed in place; when the gear in the linkage transmission mechanism rotates reversely, the gear rotates reversely and is transmitted to the efficient ball screw of the linear motion mechanism, the efficient ball screw rotates to pull the linear push rod of the linear motion mechanism to retract backwards, when the linear push rod retracts to the first position sensor, the first position sensor receives a signal and transmits the obtained signal to the driving controller, at the moment, the linkage transmission mechanism stops rotating, and the pantograph lifting is completed in place.
Further, the first position sensor is an inductive sensor, when the stroke of a push rod in the linear motion mechanism reaches the first position sensor, the first position sensor transmits a sensing signal to a control circuit of the pantograph, and the control circuit of the pantograph controls the stop of transmission so as to realize the control of the in-place pantograph lifting.
The pantograph limiting and sensing device has the following advantages:
⑴ the invention accurately judges whether the pantograph head and the vehicle collector are in good contact by the deformation of the disc-shaped elastic sheet through the push rod, thereby effectively ensuring the power utilization safety.
⑵ the invention can increase or decrease the deformation of the disc-shaped spring plate according to the actual load demand, and reduce the risk of burning the motor caused by excessive instantaneous current.
⑶ the invention can adapt to the height matching of different vehicle current collectors only by setting the position of the sensor once, thereby improving the production efficiency and reducing the labor cost.
⑷ the invention avoids the potential safety hazards of striking sparks and arcing caused by the firm lapping of the pantograph head and the vehicle-mounted current collector.
Drawings
FIG. 1 is an exploded view of the overall structure of the present invention;
FIG. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is a schematic view of the present invention in a raised bow resting state;
FIG. 4 is a schematic view of the installation position of the present invention;
FIG. 5 is a schematic view of the present invention showing the state of descending the bow.
The notation in the figure is:
1. a base; 2. an induction device; 3. a bow assembly; 4. a lifting arm; 5. a support bar; 201. a linkage transmission mechanism; 202. a linear motion mechanism; 203. a motor connector; 204. a movable slide block; 205. a first position sensor; 206. a second position sensor; 207. a disk-shaped elastic sheet; 208. a guide ring; 209. a sensor bracket 210 and a connecting shaft; 211. positioning columns, 212 and gaskets; 213. and a clamp spring.
Detailed Description
For a better understanding of the objects, structure and function of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings.
As shown in fig. 1 to 5, the present invention is provided with: an induction device 2, the induction device 2 comprising: the motor connecting head 203, a movable sliding block 204, a disc-shaped elastic sheet 207, a positioning column 211 and a connecting shaft 210 are sequentially arranged together with the motor connecting head 203; wherein the content of the first and second substances,
the appearance of the motor connector 203 is an inverted П -shaped structure, one end of an inverted П structure is provided with a cylinder with an inner hole in parallel, the tail end of an inverted П structure is provided with a through hole for a bolt and nut pair oppositely, and the inside of the through hole is provided with the bolt and nut pair;
the side section of the movable sliding block 204 is a stepped shaft in a shape of an arrow, and the movable sliding block is installed in a cylindrical inner hole of the motor connector 203 through a gasket 212 and a clamp spring 213, a plurality of grooves are formed in a large-end cylinder of the movable sliding block 204 at certain intervals, and guide rings 208 are correspondingly sleeved in the grooves of the grooves; and the stepped shaft structure of the movable slider 204 is tapered.
The sensor holder 209 is formed in an П shape opposite to the motor connector 203.
The gasket 212 and the guide ring 208 are made of polytetrafluoroethylene materials; the disk-shaped elastic sheet 207 is made of spring steel material.
The positioning posts 211 have a vertical cross-section.
The side section of the connecting shaft 210 is a stepped shaft structure opposite to the positioning column 211; and the stepped shaft structure of the connecting shaft 210 is gradually reduced; the small end of the stepped shaft of the connecting shaft 210 is connected with the linear motion mechanism 202, and the linear motion mechanism 202 is connected with the linkage transmission mechanism 201 in parallel.
The second position sensor 206 is an inductive sensor as a stroke position sensor; when the push rod in the linear motion mechanism 202 is stressed by a load to make the disc-shaped elastic sheet 207 deform to zero, the second position sensor 206 transmits a sensing signal to a control circuit of the pantograph, and the control circuit of the pantograph controls the stop of transmission so as to realize the control of lowering the pantograph in place.
The linear motion mechanism 202 is an existing mechanism with a transmission gear, a high-efficiency ball screw and a static load brake built in; a first position sensor 205 is mounted on the linear motion mechanism 202, and the first position sensor 205 is mounted at a side position of the linear motion mechanism 202; the first position sensor 205 is connected to a drive controller in the linear motion mechanism 202.
The linkage transmission mechanism 201 is internally provided with a drive controller which is composed of a J1939CAN bus, an open-loop speed controller and a plurality of gear set direct current motors; when the gear in the linkage transmission mechanism 201 rotates forward, the forward rotation of the gear is transmitted to the high-efficiency ball screw of the linear motion mechanism 202, the high-efficiency ball screw rotates to push the linear push rod to extend forward, under the reaction of force, the movable sliding block 204 compresses the deformation of the disc-shaped elastic sheet 207 to zero, the second position sensor 206 receives a signal and transmits the obtained signal to the driving controller, at the moment, the linkage transmission mechanism 201 stops rotating, and the bow reduction is completed in place.
When the gears in the linkage transmission mechanism 201 rotate reversely, the gears rotate reversely and are transmitted to the high-efficiency ball screw of the linear motion mechanism 202, the high-efficiency ball screw rotates to pull the linear push rod of the linear motion mechanism 202 to retract backwards, when the linear push rod retracts to the first position sensor 205, the first position sensor 205 receives a signal and transmits the obtained signal to the driving controller, at the moment, the linkage transmission mechanism 201 stops rotating, and the pantograph lifting is completed in place.
The linear motion mechanism 202 is made of a metal material, and a plurality of (two in this embodiment) slots are formed in the side surface thereof for fixing and installing the first position sensor 205.
The first position sensor 205 is an inductive sensor. When the push rod in the linear motion mechanism 202 travels to the first position sensor 205, the first position sensor 205 transmits a sensing signal to the control circuit of the pantograph, and the control circuit of the pantograph controls the stop of transmission so as to realize the control of pantograph lifting in place.
According to the invention, the second position sensor 206 is arranged at the induction device 209, and the first position sensor 205 is arranged at the linear motion mechanism 202, so that the lifting position of the pantograph head of the pantograph can be accurately detected, and whether the pantograph head is lifted in place or not can be judged.
The specific implementation technical steps are as follows:
1. the guide rings 208 are respectively sleeved into the corresponding slot positions of the movable sliding blocks 204;
2. the disc-shaped elastic sheet 207 is sleeved into the positioning column 211, and the positioning column 211 is arranged in the inner cavity of the connecting shaft 210;
3. the movable sliding block 204 is arranged in the inner cavity of the connecting shaft 210, and is arranged in the clamp spring groove of the connecting shaft 210 by the clamp spring 213 for limiting.
4. The second position sensor 206 is arranged in the sensor bracket 209 and is fixed on the motor connector 203;
5. the connecting shaft 210 is externally threaded to connect with the push rod of the linear motion mechanism 202.
When in use, two ends of the induction device 2 are arranged on the base 1, and one end of the base 1 is fixed on the support rod 5; the support rod 5 is pivoted on the lifting arm 4, the lifting arm 4 is arranged on the bow head component 3,
and a lifting support is also arranged between the base 1 and the lifting arm 4. The second position sensor 206 and the first position sensor 205 arranged at the sensor bracket 209 and the linear motion mechanism 202 are respectively used for accurately detecting the lifting position of the pantograph head of the pantograph and judging whether the pantograph head is lifted in place.
The above-mentioned base; a bow assembly; a lifting arm; a support bar; a linkage transmission mechanism; a linear motion mechanism; the sensor is the prior art, and the unexplained technology is the prior art and is not described again.
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (9)
1. The utility model provides a spacing induction system of pantograph which characterized in that is equipped with: an induction device, the induction device comprising: the motor connector, a movable sliding block, a disc-shaped elastic sheet, a positioning column and a connecting shaft are sequentially arranged together with the motor connector; wherein the content of the first and second substances,
one end of the motor connector is provided with a cylinder with an inner hole in parallel, and the other end of the motor connector is provided with a bolt and nut pair; the motor connecting head is relatively provided with a mounting hole for the sensor bracket to pass through, and a second position sensor is arranged in the mounting hole and connected with a control circuit of the pantograph;
the movable sliding block is arranged in a cylindrical inner hole of the motor connector, a plurality of grooves are formed in a large-end cylinder of the movable sliding block at certain intervals, and guide rings are correspondingly sleeved in the grooves of the grooves;
the side section of the connecting shaft is of a stepped shaft structure opposite to the positioning column; the small end of the connecting shaft is connected with a linear motion mechanism, and the linear motion mechanism is connected with a linkage transmission mechanism in parallel; a first position sensor is arranged on the side surface of the linear motion mechanism; through setting up the second position sensor in sensor support department, the first position sensor of linear motion mechanism department respectively for whether the bow goes up and down to target in place is judged to accurate bow lift position that detects the pantograph.
2. The pantograph limit sensing device of claim 1, wherein the motor connector is in an inverted П shape, one end of the inverted П structure is provided with a cylinder with an inner hole in parallel, the tail end of the inverted П structure is provided with a through hole for a bolt and nut pair, the bolt and nut pair is arranged in the through hole, and the head end of the inverted П structure is provided with a mounting hole for a sensor bracket to pass through.
3. The pantograph limit sensing device of claim 1 or claim 2, wherein the sensor support is an П shaped structure opposite the motor connector, wherein the second position sensor is mounted in the upper mounting hole and the lower mounting hole is connected to the motor connector.
4. The pantograph limit sensing device according to claim 1, wherein the side section of the movable slider is a stepped shaft in a shape of a cone, and the movable slider is mounted in a cylindrical inner hole of the motor connector through a gasket and a snap spring; the stepped shaft structure of the movable sliding block is gradually reduced; the gasket and the guide ring are made of polytetrafluoroethylene materials.
5. The pantograph limit sensing device of claim 1, wherein the positioning posts have a generally rectangular cross-section.
6. The pantograph limit sensing device of claim 1, wherein the second position sensor is an inductive sensor; when the push rod in the linear motion mechanism makes the disc-shaped elastic sheet deform to zero through load stress, the second position sensor transmits the sensing signal to the control circuit of the pantograph, and the control circuit of the pantograph controls the stop of transmission so as to realize that the pantograph is lowered in place.
7. The pantograph position limit sensing device of claim 1, wherein the linear motion mechanism is made of a metal material and has a plurality of slots for mounting the first position sensor; the linear motion mechanism is a mechanism internally provided with a transmission gear, a high-efficiency ball screw and a static load brake; the linear motion mechanism is provided with a first position sensor, and the first position sensor is arranged at the side position of the linear motion mechanism.
8. The pantograph limit sensing device of claim 1, wherein the linkage transmission mechanism incorporates a drive controller; when a gear in the linkage transmission mechanism rotates forwards, the forward rotation of the gear is transmitted to a high-efficiency ball screw of the linear motion mechanism, the high-efficiency ball screw rotates to push a linear push rod to extend forwards, under the reaction of force, a movable sliding block compresses the deformation of a disc-shaped elastic sheet to zero, a second position sensor receives a signal and transmits the obtained signal to a driving controller, at the moment, the linkage transmission mechanism stops rotating, and the bow reduction is completed in place; when the gear in the linkage transmission mechanism rotates reversely, the gear rotates reversely and is transmitted to the efficient ball screw of the linear motion mechanism, the efficient ball screw rotates to pull the linear push rod of the linear motion mechanism to retract backwards, when the linear push rod retracts to the first position sensor, the first position sensor receives a signal and transmits the obtained signal to the driving controller, at the moment, the linkage transmission mechanism stops rotating, and the pantograph lifting is completed in place.
9. The pantograph position limit sensing device of claim 1, wherein the first position sensor is an inductive sensor, and when the push rod in the linear motion mechanism travels to the first position sensor, the first position sensor transmits a sensing signal to a control circuit of the pantograph, and the control circuit of the pantograph controls the stop of the transmission to realize the control of the pantograph lifting to the position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911301372.7A CN110979016A (en) | 2019-12-17 | 2019-12-17 | Limiting and sensing device for pantograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911301372.7A CN110979016A (en) | 2019-12-17 | 2019-12-17 | Limiting and sensing device for pantograph |
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| Publication Number | Publication Date |
|---|---|
| CN110979016A true CN110979016A (en) | 2020-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911301372.7A Pending CN110979016A (en) | 2019-12-17 | 2019-12-17 | Limiting and sensing device for pantograph |
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| CN (1) | CN110979016A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114228465A (en) * | 2021-12-16 | 2022-03-25 | 陈延龙 | Electric-oil hybrid truck for long-distance freight and matched power system thereof |
-
2019
- 2019-12-17 CN CN201911301372.7A patent/CN110979016A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114228465A (en) * | 2021-12-16 | 2022-03-25 | 陈延龙 | Electric-oil hybrid truck for long-distance freight and matched power system thereof |
| CN114228465B (en) * | 2021-12-16 | 2023-10-27 | 陈延龙 | Electric oil mixed truck for long-distance freight transportation and matched power system thereof |
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