CN111048348A - Vehicle-mounted electric control pneumatic grounding switch - Google Patents
Vehicle-mounted electric control pneumatic grounding switch Download PDFInfo
- Publication number
- CN111048348A CN111048348A CN202010001107.3A CN202010001107A CN111048348A CN 111048348 A CN111048348 A CN 111048348A CN 202010001107 A CN202010001107 A CN 202010001107A CN 111048348 A CN111048348 A CN 111048348A
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- CN
- China
- Prior art keywords
- grounding switch
- swing cylinder
- rotating shaft
- grounding
- solenoid valve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/026—Movable parts and contacts mounted thereon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/24—Power arrangements internal to the switch for operating the driving mechanism using pneumatic or hydraulic actuator
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/003—Earthing switches
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- Gas-Insulated Switchgears (AREA)
Abstract
The invention discloses a vehicle-mounted electric control pneumatic grounding switch which comprises a grounding switch rotating arm, wherein the grounding switch rotating arm is arranged on a top plate of a base through a grounding switch rotating shaft, a swinging cylinder mounting plate is arranged below the top plate of the base, a swinging cylinder is arranged on the swinging cylinder mounting plate, and an output rotating shaft of the swinging cylinder is connected with the grounding switch rotating shaft. The air inlet pipeline of the swing cylinder is provided with a double-source electromagnetic valve which is connected with a double-path direct current power supply. The swing cylinder gear rotating shaft is coaxially connected with the concentric cam, the concave-convex surface of the concentric cam sequentially rotates to compress and release the small wheels of the two micro switches when rotating, the micro switches are normally opened and closed, the contacts are reversed, an electrical on-off signal is output, and a grounding switch state signal is fed back. The switching operation between the grounding switch connection position and the operation position can be carried out in a cab control system, the grounding switch state signal is directly fed back to a driver display screen, the operation is convenient, the safety and the reliability are realized, the defect of manually controlling the grounding switch is overcome, and the safety and the reliability of the train during overhauling and maintenance are improved.
Description
Technical Field
The invention relates to a railway vehicle technology, in particular to a vehicle-mounted electric control pneumatic grounding switch which is mainly used for 25kV electrified railways.
Background
The electric locomotive is provided with the grounding switch which is important grounding protection equipment in the roof high-voltage electrical equipment and is used in the parking maintenance and the overhaul of the locomotive, the grounding switch is usually matched with a vacuum circuit breaker for use, and is used for grounding two ends of a fracture of the circuit breaker simultaneously, thereby preventing the accidental power supply of a network cable or the feedback power supply of the locomotive equipment during the overhaul and being important protection equipment on the locomotive and a motor car.
At present, the widely used grounding switch is manually controlled, and the train switch cabinet needs to be opened to manually operate the grounding switch to switch from a running position to a grounding position or reversely. Complex operation and labor waste, and low safety due to close contact with high-voltage switch equipment.
Disclosure of Invention
The invention aims to provide a vehicle-mounted electric control pneumatic grounding switch.
The purpose of the invention is realized by the following technical scheme:
the vehicle-mounted electric control pneumatic grounding switch comprises a grounding switch rotating arm, wherein the grounding switch rotating arm is installed on a top plate of a base through a grounding switch rotating shaft, a swing air cylinder installing plate is installed below the top plate of the base, a swing air cylinder is installed on the swing air cylinder installing plate, and the output end of the swing air cylinder is in transmission connection with the grounding switch rotating shaft.
According to the technical scheme provided by the invention, the vehicle-mounted electric control pneumatic grounding switch provided by the embodiment of the invention adopts high-pressure gas input to do work to drive the swing cylinder, the double-source electromagnetic valve controls the output of the two gas paths, the output high-pressure air drives the gear rotating shaft of the swing cylinder to rotate, further drives the rotating shaft of the grounding switch to rotate, and finally drives the rotating arm of the grounding switch to rotate, so that the function switching between the grounding position and the operating position of the grounding switch is realized.
Drawings
Fig. 1 is an external structure view of a vehicle-mounted electrically-controlled pneumatic grounding switch provided in an embodiment of the present invention;
FIG. 2 is a side view of a grounding switch according to an embodiment of the present invention;
FIG. 3 is a front view of the grounding switch structure according to the embodiment of the present invention;
fig. 4 is a perspective view of an earthing switch assembling structure according to an embodiment of the present invention;
in the figure:
1. the grounding switch comprises a grounding switch rotating arm, 2, a grounding clamp, 3, a grounding contact, 4, a base, 5, a grounding switch rotating shaft, 6, a deep groove ball bearing, 7, a swinging cylinder mounting plate, 8, a swinging cylinder, 9, a micro switch mounting plate, 10, a micro switch, 11, a concentric cam, 12, a cam pressing ring, 13, a double-source electromagnetic valve, 14, an air inlet joint, 15, direct-current power supply inputs A and 16 and a direct-current power supply input B.
Detailed Description
The embodiments of the present invention will be described in further detail below. Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art.
The invention discloses a vehicle-mounted electric control pneumatic grounding switch, which has the preferred specific implementation modes that:
including the earthing switch rocking arm, the earthing switch rocking arm passes through the earthing switch pivot to be installed on the roof of base, the swing cylinder mounting panel is equipped with below the roof of base, the swing cylinder is equipped with to the swing cylinder mounting panel, the output of swing cylinder with earthing switch pivot transmission is connected.
The double-source electromagnetic valve is arranged on an air inlet pipeline of the swing cylinder and comprises a left electromagnetic valve and a right electromagnetic valve, a high-pressure gas pipeline is input into the double-source electromagnetic valve through an air inlet connector in a single way and is output to two cavities of the swing cylinder through the left electromagnetic valve and the right electromagnetic valve respectively, and the left electromagnetic valve and the right electromagnetic valve are connected with one of two direct-current power supplies respectively.
The swing cylinder is connected with a gear rotating shaft of the swing cylinder through a gear and rack meshing structure, and the gear rotating shaft of the swing cylinder is coaxially connected with the rotating shaft of the grounding switch.
The swing cylinder gear rotating shaft is coaxially connected with the concentric cam, the two micro switches are installed on the micro switch installation plate and distributed on two sides of the concentric cam, the concave-convex surface of the concentric cam sequentially rotates to compress and release the small wheels of the two micro switches when rotating, the micro switches are normally opened and closed, the contacts are reversed, electric on-off signals are output, and the state signals of the grounding switch are fed back.
The double-source electromagnetic valve, the swing cylinder and the concentric cam are integrally installed inside the base, and the grounding switch rotating arm is installed outside the base.
The invention relates to a vehicle-mounted electric control pneumatic grounding switch, which adopts high-pressure gas input to do work to drive a swing cylinder, a double-source electromagnetic valve controls two gas circuit input cylinders, the input high-pressure gas drives a rack in the middle of the swing cylinder to move transversely, the rack drives a gear meshed with the rack to rotate, so that a grounding switch rotating shaft concentrically assembled with the gear rotating shaft is driven to rotate, and finally a grounding switch rotating arm is driven to rotate, so that the switching between a grounding switch connection position and an operation position is realized, a concentric cam is simultaneously driven by a gear rotating shaft in the swing cylinder, the concave-convex positions can be alternately changed when the concentric cam rotates, so that a microswitch small wheel assembled on a microswitch mounting plate is compressed or released, the switching of opening and closing output signals of a normally open contact and a. The novel electric control pneumatic grounding switch only needs the cab to be operated through the electric control button, the complexity and the danger of manual operation of manual unpacking of the traditional grounding switch are overcome, and the reliability and the safety of train overhauling and maintenance are improved.
The basic structure of the vehicle-mounted electric control pneumatic grounding switch comprises a rotary arm, a grounding switch rotary shaft, a deep groove ball bearing, a swing cylinder mounting plate, a swing cylinder, a double-source electromagnetic valve, a microswitch mounting plate, a microswitch, a concentric cam, a cam compression ring, an air inlet joint and the like. The driving mode and the mechanical structure of the grounding switch meet the control requirement of the train, and compared with the traditional manual grounding switch, the grounding switch is safer and more reliable and is convenient to operate.
By adopting the vehicle-mounted electric control pneumatic grounding switch, the switching operation between the grounding switch grounding position and the running position can be carried out in a cab control system, the state signal of the grounding switch is directly fed back to a driver display screen, the operation is convenient, the safety and the reliability are realized, the defect of manually controlling the grounding switch is overcome, and the safety and the reliability of the train during maintenance are improved.
The technical scheme and principle adopted by the invention are as follows:
the double-source electromagnetic valve, the swing cylinder and the concentric cam are integrally installed inside the base, the rotating arm is installed outside the base, and the rotating arm and the swing cylinder are in concentric linkage through the rotating shaft. The left side of the double-source electromagnetic valve is electrified, the valve on the left side is opened, the tilt cylinder moves rightwards, the grounding function is realized by the external rotating arm, the right side of the double-source electromagnetic valve is electrified, the valve on the right side is opened, the tilt cylinder moves leftwards, the grounding disconnection function is realized by the external rotating arm, and the state signal transmission function of the grounding switch is realized by compressing and releasing the microswitch by the concentric cam inside the base.
After the grounding switch receives a grounding position command signal, a direct current power supply on the left side of the double-source electromagnetic valve inputs a port coil to be electrified, a port coil B loses electricity, an inlet valve port on the A end is opened, high-pressure air enters from a pipe joint in the middle of the electromagnetic valve and reaches the left side of the swing cylinder from the valve port on the left side of the A end, a piston in the swing cylinder is pushed to move rightwards, a rack in the middle of the swing cylinder is driven to move rightwards, the rack drives a gear meshed with the rack to rotate anticlockwise, the gear drives a gear rotating shaft, a grounding switch rotating shaft concentrically assembled with the gear rotating shaft is driven to rotate anticlockwise, the rotating shaft drives a grounding switch rotating arm to rotate anticlockwise, a grounding clamp on the rotating arm; after the grounding switch receives a running position command signal, a direct current power supply on the right side of the double-source electromagnetic valve inputs a coil of a port B to be electrified, the coil of the port A loses the electricity, an air inlet valve port of the port B is opened, high-pressure air enters from a pipe joint in the middle of the electromagnetic valve and reaches the right side of the swinging cylinder from the valve port of the port B on the right side, a piston in the swinging cylinder is pushed to move leftwards, a rack in the middle of the swinging cylinder is driven to move leftwards, the rack drives a gear meshed with the rack to rotate clockwise, the gear drives a gear rotating shaft, a grounding switch rotating shaft concentrically assembled with the gear rotating shaft is driven to rotate clockwise, the rotating shaft drives a grounding switch rotating arm to rotate clockwise; the rotating angle of the rotating arm between the grounding position and the operating position is the same as the rotating angle of the tilt cylinder gear, and is calculated and set by the stroke of the tilt cylinder piston. The concentric cam is driven by the gear rotating shaft in the swing cylinder at the same time, and the concave-convex positions can be alternately changed when the concentric cam rotates, so that the cam of the microswitch on the mounting plate is compressed or released, the switching of the opening and closing output signals of the normally open contact and the normally closed contact of the microswitch is realized, and the state signal of the grounding switch in the connected state or the running state is fed back.
By applying the invention, the high-voltage equipment and the low-voltage control are isolated and distributed only by the operation of the cab through the electric control button, the complexity and the danger of manual operation of manual unpacking of the traditional grounding switch are overcome, the reliability and the safety of train maintenance are improved, the whole structure is simple to assemble, and the application prospect is very wide.
The specific embodiment is as follows:
as shown in fig. 1 to 4, the electrically controlled pneumatic grounding switch is used in cooperation with a circuit breaker for effectively grounding a grounding contact of a member 3 mounted on the circuit breaker, and the integral structure comprises a grounding function mechanism mounted outside a base of the member 4, and a rotating arm driving mechanism and a signal feedback mechanism mounted inside the base. The grounding function mechanism comprises a grounding switch rotating arm 1 and a grounding clamp 2, the grounding rotating arm is driven by a rotating arm driving mechanism to rotate clockwise or anticlockwise for a certain angle, the two grounding clamps are assembled on the grounding switch rotating arm in a high-low mode, the rotating arm rotates to drive the grounding clamps to move, the grounding clamps are contacted with and disconnected from a grounding contact, and the grounding and disconnection (namely the operation position) functions of the grounding switch are realized.
The rotary arm driving mechanism (as shown in fig. 2 and 3) comprises a part 5 of a grounding switch rotating shaft, a part 6 of a deep groove ball bearing, a part 7 of a swing cylinder mounting plate, a part 8 of a swing cylinder, a part 13 of a double-source electromagnetic valve, a part 14 of an air inlet joint, a part 15 of a direct-current input power supply A and a part 16 of a direct-current input power supply B. The grounding switch rotating shaft is assembled and fixed on the base through the swing cylinder mounting plate and the deep groove ball bearing, the swing cylinder is mounted on the swing cylinder mounting plate, the double-source electromagnetic valve is mounted on the swing cylinder, the air inlet connector is mounted in the middle of the double-source electromagnetic valve, and the direct-current power supply input A and the direct-current power supply input B are respectively connected from the end A and the end B of the double-source electromagnetic valve.
The signal feedback mechanism (as shown in fig. 2 and 3) comprises a piece 9 micro-switch mounting plate, a piece 10 micro-switch, a piece 11 concentric cam and a piece 12 cam press ring. The micro switch mounting plate is fixedly arranged on the swing cylinder, the micro switch is fixedly arranged on the micro switch mounting plate, the concentric cam is fixedly arranged on the swing cylinder and rotates concentrically with a rotating shaft of the swing cylinder, the convex surface of the concentric cam and the cam of the micro switch are assembled in a pressing mode, and the concave surface of the concentric cam and the cam of the micro switch are assembled in a releasing mode (the cam is not compressed). The cam compression ring is arranged on the concentric cam, so that the concentric cam is ensured to be parallel to the microswitch mounting plate and the microswitch, and the switching accuracy of opening and closing signals is ensured when the microswitch is pressed and released.
The structure of the grounding switch is described in detail below with reference to the switching process of the grounding position and the operation position of the electro-pneumatic grounding switch.
As shown in fig. 2 and 3, when the grounding switch receives a grounding position command signal, the direct current power supply on the left side of the dual-source solenoid valve inputs a port coil to be powered on, a port coil B is powered off, an inlet valve port on the end a is opened, high-pressure air enters from a pipe joint in the middle of the solenoid valve and reaches the left side of the oscillating cylinder from the valve port on the left side end a to push a piston in the oscillating cylinder to move rightwards, a rack in the middle of the oscillating cylinder is driven to move rightwards, the rack drives a gear meshed with the rack to rotate anticlockwise, the gear drives a gear rotating shaft, further, the grounding switch rotating shaft concentrically assembled with the gear rotating shaft is driven to rotate anticlockwise, the rotating shaft drives a grounding switch rotating arm to rotate anticlockwise, a grounding clip on the rotating arm is contacted with a grounding contact on a circuit breaker, the grounding switch is switched to, the convex surface compresses the left micro-switch small wheel, the concave surface releases the right micro-switch small wheel, normally open and normally closed contacts in the micro-switch are respectively reversed, opening and closing signals are reversely output, and a grounding signal of the grounding switch is output to a cab; when the grounding switch receives a running position command signal, a direct current power supply on the right side of the double-source electromagnetic valve inputs a coil of a port B to be electrified, the coil of the port A loses electricity, an air inlet valve port of the port B is opened, high-pressure air enters from a pipe joint in the middle of the electromagnetic valve and reaches the right side of the swinging cylinder from the valve port of the port B on the right side, a piston in the swinging cylinder is pushed to move leftwards, a rack in the middle of the swinging cylinder is driven to move leftwards, the rack drives a gear meshed with the rack to rotate clockwise, the gear drives a gear rotating shaft, further the grounding switch rotating shaft concentrically assembled with the gear rotating shaft is driven to rotate clockwise, the rotating shaft drives a grounding switch rotating arm to rotate clockwise, a grounding clamp on the rotating arm is disconnected with a grounding contact on a circuit breaker, the grounding switch is switched to a running position, the convex surface compresses the small wheel of the right micro switch, the normally closed contact and the normally open contact in the micro switch are respectively reversed, the closing signal and the opening signal are reversely output, and the signal of the running position of the grounding switch is output to the cab.
The invention overcomes the complexity and danger of manual unpacking operation required by the traditional grounding switch, has compact mechanism assembly structure, accurate signal output, simple and safe operation and improves the reliability and safety of train maintenance.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. The utility model provides a vehicle-mounted automatically controlled pneumatic earthing switch, includes the earthing switch rocking arm, its characterized in that, the earthing switch rocking arm passes through the earthing switch pivot to be installed on the roof of base, the swing cylinder mounting panel is equipped with below the roof of base, the swing cylinder is equipped with to the swing cylinder mounting panel, the output of swing cylinder with the earthing switch pivot transmission is connected.
2. The vehicle-mounted electrically-controlled pneumatic grounding switch according to claim 1, wherein a double-source solenoid valve is mounted on an air inlet pipeline of the swing cylinder, the double-source solenoid valve comprises a left solenoid valve and a right solenoid valve, a high-pressure gas pipeline is input into the double-source solenoid valve through an air inlet connector in a single way and is respectively output to two cavities of the swing cylinder through the left solenoid valve and the right solenoid valve, and the left solenoid valve and the right solenoid valve are respectively connected with one of two direct-current power supplies.
3. The vehicle-mounted electrically-controlled pneumatic grounding switch according to claim 2, wherein the swing cylinder is connected with a swing cylinder gear rotating shaft through a gear-rack meshing structure, and the swing cylinder gear rotating shaft is coaxially connected with the grounding switch rotating shaft.
4. The vehicle-mounted electrically-controlled pneumatic grounding switch according to claim 3, wherein the gear rotating shaft of the swing cylinder is coaxially connected with a concentric cam, two microswitches are mounted on a microswitch mounting plate and distributed on two sides of the concentric cam, concave and convex surfaces of the concentric cam sequentially rotate to compress and release small wheels of the two microswitches when rotating, a normally open and normally closed contact of the microswitches is reversed, an electrical on-off signal is output, and a grounding switch state signal is fed back.
5. The vehicle-mounted electrically-controlled pneumatic grounding switch according to claim 4, wherein a deep groove ball bearing is arranged between the grounding switch rotating shaft and the base, the double-source electromagnetic valve, the swing cylinder and the concentric cam are integrally installed inside the base, and the grounding switch rotating arm is installed outside the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010001107.3A CN111048348A (en) | 2020-01-02 | 2020-01-02 | Vehicle-mounted electric control pneumatic grounding switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010001107.3A CN111048348A (en) | 2020-01-02 | 2020-01-02 | Vehicle-mounted electric control pneumatic grounding switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111048348A true CN111048348A (en) | 2020-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010001107.3A Pending CN111048348A (en) | 2020-01-02 | 2020-01-02 | Vehicle-mounted electric control pneumatic grounding switch |
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| Country | Link |
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| CN (1) | CN111048348A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113443437A (en) * | 2021-05-27 | 2021-09-28 | 常州伟泰科技股份有限公司 | Arm-type autoloading frock of helping hand |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101393813A (en) * | 2007-09-17 | 2009-03-25 | 阿雷瓦T&D股份公司 | Electromagnetic actuator and switching device equipped with such an electromagnetic actuator |
| CN201311849Y (en) * | 2008-12-10 | 2009-09-16 | 东北电力科学研究院有限公司 | Indoor high-voltage pneumatic disconnecting switch |
| CN201956251U (en) * | 2011-03-24 | 2011-08-31 | 南车株洲电力机车有限公司 | High-voltage disconnecting switch for high-power electric locomotive |
| CN207486079U (en) * | 2017-11-29 | 2018-06-12 | 浙江杰特优动力机械有限公司 | A kind of speed closes butterfly valve |
-
2020
- 2020-01-02 CN CN202010001107.3A patent/CN111048348A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101393813A (en) * | 2007-09-17 | 2009-03-25 | 阿雷瓦T&D股份公司 | Electromagnetic actuator and switching device equipped with such an electromagnetic actuator |
| CN201311849Y (en) * | 2008-12-10 | 2009-09-16 | 东北电力科学研究院有限公司 | Indoor high-voltage pneumatic disconnecting switch |
| CN201956251U (en) * | 2011-03-24 | 2011-08-31 | 南车株洲电力机车有限公司 | High-voltage disconnecting switch for high-power electric locomotive |
| CN207486079U (en) * | 2017-11-29 | 2018-06-12 | 浙江杰特优动力机械有限公司 | A kind of speed closes butterfly valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113443437A (en) * | 2021-05-27 | 2021-09-28 | 常州伟泰科技股份有限公司 | Arm-type autoloading frock of helping hand |
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Application publication date: 20200421 |