CN111525296B - Automatically-controlled grounding wire device hung on contact net and control method thereof - Google Patents
Automatically-controlled grounding wire device hung on contact net and control method thereof Download PDFInfo
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- CN111525296B CN111525296B CN202010462320.4A CN202010462320A CN111525296B CN 111525296 B CN111525296 B CN 111525296B CN 202010462320 A CN202010462320 A CN 202010462320A CN 111525296 B CN111525296 B CN 111525296B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/26—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for engaging or disengaging the two parts of a coupling device
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Abstract
The invention discloses an automatic control device for hanging ground wires of a contact net, which comprises a multi-section electric push rod, wherein the bottom end of the multi-section electric push rod is connected with a PLC through an intermediate relay, the other end of the multi-section electric push rod is vertically provided with an insulating plate, the insulating plate is provided with a current conducting plate through a spring, the current conducting plate is connected with a annealed copper wire a, the other end of the annealed copper wire a is connected with a voltage divider, the other end of the voltage divider is connected with a annealed copper wire b, the other end of the annealed copper wire b is connected with a grounding metal plate, the grounding metal plate is vertically and fixedly connected with a first electromagnet, the bottom of the voltage divider. The invention also discloses a control method of the automatically-controlled grounding wire device hung on the contact net. The problems that in the prior art, the electricity testing of operators is inaccurate, the ground wire is not hung in place, the operation is not performed according to a specified sequence, and the working strength is high are solved.
Description
Technical Field
The invention belongs to the technical field of railway contact net safety tools, particularly relates to an automatic control contact net ground wire hanging device, and further relates to a control method of the automatic control contact net ground wire hanging device.
Background
The hanging ground wire is an important safety measure for the power failure maintenance of the contact network, can quickly eliminate residual charges of a power failure line, reduces induced voltage caused by adjacent non-power failure lines, is a safety barrier for protecting maintenance personnel, and prevents sudden power failure from causing damage to human bodies. All electricity testing and grounding operations are carried out by 2 persons; before power failure maintenance, whether the state of the electroscope meets the requirement needs to be checked; when the ground wire is installed, one end of the ground wire is firstly grounded; connecting the other end of the cable with the conductor which is powered off; the removal sequence is reversed.
The ground wire hanging operation is complicated, a large number of tools and instruments are required to be carried, and the labor intensity is high; and potential safety hazards caused by insufficient electricity testing, insufficient grounding or non-operation according to a specified sequence of the operation personnel exist all the time, and high-risk accidents such as live hanging of a ground wire by the operation personnel, strong-current invading of a line, electric shock of a maintenance personnel and the like can occur. In addition, most of the electroscopes used at present are contact type capacitance electroscopes, and the electroscopes are easy to be subjected to false detection under the conditions of strong induced electricity and large residual charges of lines. Inaccurate electricity test and inaccurate position can seriously affect the maintenance of the skylight.
Disclosure of Invention
The invention aims to provide an automatic control device for hanging a ground wire on a contact net, which solves the problems that in the prior art, an operator hangs the ground wire in a live way, a strong current invades the circuit and the working strength is high.
The invention also aims to provide a control method of the automatically-controlled grounding wire device for the contact net hanger, which solves the problems of potential safety hazards caused by insufficient electricity testing and grounding of operators and incapability of operating according to a specified sequence in the prior art.
The invention adopts a technical scheme that an automatic control overhead contact system ground wire hanging device comprises a multi-section electric push rod, the multi-section electric push rod is connected with a PLC through an intermediate relay, the other end of the multi-section electric push rod is vertically provided with an insulating plate, the top of the insulating plate is provided with a current conducting plate through a spring, the insulating plate and the current conducting plate are arranged in parallel, the current conducting plate is connected with a annealed copper wire a, the other end of the annealed copper wire a is connected with a voltage divider, the other end of the annealed copper wire b is connected with a grounding metal plate, the grounding metal plate is vertically and fixedly connected with a first electromagnet, the bottom of the voltage divider is provided with a 7-shaped bracket, the bottom of the bracket is provided with a bottom plate, the side surface of the bracket is sequentially provided with a wedge block, the second electromagnets are respectively connected with the PLC through intermediate relays; and an output voltage port of the voltage divider is connected with an analog voltage input port of the PLC.
The invention is also characterized in that:
the spring is a powerful compression spring, and at least 4 springs are arranged.
The insulating plate and the multi-section electric push rod are connected through bolts; a direct current motor is arranged in the multi-section electric push rod and is respectively connected with the PLC through a Hall current transducer and an intermediate relay; the conductive plate is a graphite plate or a tungsten copper plate.
The voltage divider is a resistor voltage divider, and the voltage divider is formed by connecting 6 high-voltage glass glaze resistors in series in parallel with a rectifier bridge.
The first electromagnet and the second electromagnet are both push-pull electromagnets.
The side surface of the current-conducting plate is provided with a screw hole a, the two ends of the annealed copper wire a are provided with wire noses, and the wire nose at one end of the annealed copper wire a is connected with the screw hole a of the current-conducting plate through a bolt a;
the voltage divider both ends are provided with ground connection terminal and lower ground connection terminal respectively, and the other end of annealed copper line a is connected with last ground connection terminal, and lower ground connection terminal is connected with annealed copper line b's line nose, and one side of ground connection metal sheet is provided with screw hole b, and the line nose of the annealed copper line b other end is connected through bolt b with ground connection metal sheet's screw hole b.
The bracket, the wedge-shaped block and the bottom plate are integrally formed, and a bulge is arranged at one end of the bottom plate, which is far away from the voltage divider;
the control switch comprises a crank, a connecting rod and a contact cutter, a connecting hole is formed in the body of the wedge-shaped block, the second electromagnet is installed in the connecting hole, a contact of the second electromagnet is clamped on the crank, a shaft of the crank is installed on the wedge-shaped block, a rotating shaft hole a is formed in one end of the crank, a rotating shaft hole b matched with the rotating shaft hole a is formed in one end of the connecting rod, and the rotating shaft hole a and the rotating shaft hole b are installed in the middle of the contact cutter through a first rotating shaft;
the body of the wedge-shaped block is provided with an arc-shaped groove, one end of a contact knife is clamped in the arc-shaped groove, the contact knife rotates along the arc-shaped groove, the bottom of the upper ground wire terminal is provided with a contact, and the other end of the contact knife is in contact with the contact;
the other end of the crank is provided with a rotating shaft hole b, the protruding body is provided with a second rotating shaft, the rotating shaft hole b is installed on the second rotating shaft, and the other end of the crank and the other end of the connecting rod are connected with an energy storage spring.
The equal rigid coupling in energy storage spring both ends has the connecting plate, all is provided with the monaural board perpendicularly on two connecting plates, and the monaural board of energy storage spring one end is installed in the second pivot, and the one end that the connecting rod is close to energy storage spring is provided with second pivot hole, and the connecting rod is connected through the second pivot with energy storage spring's the other end.
One side of the bulge is provided with a stop block, the included angle between the stop block and the horizontal plane is 40-60 degrees, and the stop block is contacted with the energy storage spring.
The other technical scheme adopted by the invention is an automatically controlled control method of a contact net hanging grounding wire device, which is implemented according to the following steps:
step 2, the PLC controls the direct current motor to rotate forwards to drive the multi-section electric push rod to extend upwards, the current of the direct current motor is monitored through the Hall current transducer, when the current of the direct current motor is larger than a threshold value, the PLC controls the direct current motor to stop rotating after t seconds, and at the moment, the conductive plate is in close contact with the pillar positioning tube;
The invention has the beneficial effects that:
(1) the automatic control device for hanging the ground wire of the contact net avoids the personal safety problem caused by the fact that ground wire operators directly hang the ground wire due to electricity error test, and avoids the potential safety hazard to line personnel caused by unreliable ground wire hanging; the ground wire is hung according to the operation sequence strictly, the ground wire hanging operation can be completed quickly, and the labor intensity of ground wire operators is reduced; the automatic control device for hanging the ground wire of the contact net has the advantages of simple operation, reliable control and stronger universality, the electricity testing and the ground wire hanging work can be completed by operating the control switch to be turned on, the operation steps are simplified, the operation time is saved, the electricity testing can be accurate, and the delay of the maintenance process caused by the false detection is avoided;
(2) the control method of the automatic control overhead line system ground wire hanging device can reduce the workload of ground wire operators, reduce the operation risk, does not need to assemble tools such as an insulating rod, a soft copper wire and the like on site, only needs to place the automatic control overhead line system ground wire hanging device on a steel rail below a strut positioning pipe and start a control switch, and can finish ground wire hanging, thereby saving the time for overhauling a skylight; according to the control method of the automatically-controlled grounding wire device hung on the contact net, the voltage of the line is collected through the voltage divider, after the current-conducting plate is in close contact with the pillar positioning tube for 5s, the PLC compares the output voltage of the collected voltage divider with the threshold value, judges whether the line has power failure according to the actual voltage of the line, and avoids the danger of false detection; the control method of the automatic control grounding wire device hung on the contact net has high reliability of hanging and grounding operation under the control of the PLC, and avoids potential safety hazards caused by accidental toppling of the grounding wire rod.
Drawings
FIG. 1 is a schematic structural diagram of an automatically controlled grounding wire hanging device of a contact net according to the present invention;
FIG. 2 is a control flow chart of the automatic control device for hanging the ground wire of the contact net;
FIG. 3 is a schematic diagram of a structure for controlling the switch to be turned on in an automatically controlled grounding wire device for a contact net hanger according to the present invention;
FIG. 4 is a schematic diagram of a structure for controlling the switch of the grounding wire device of the automatic contact net hanger according to the present invention;
fig. 5 is a schematic structural diagram of a second electromagnet and a wedge block in an automatically controlled grounding wire device for a contact net hanger according to the present invention.
In the figure, 1, a multi-section electric push rod, 2, an insulating plate, 3, a conductive plate, 4, a spring, 5, a support positioning tube, 6, a soft copper wire a, 7, a voltage divider, 8, a first electromagnet, 9, a second electromagnet, 10, a direct current motor, 11, a steel rail, 12, a PLC, 13, a soft copper wire b, 14, a grounding metal plate, 15, a control switch, 15-1, a connecting rod, 15-2, a crank, 15-3, an energy storage spring, 15-4, a stop block and 15-5 contact knives.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention relates to an automatic control contact net hanging ground wire device, as shown in figure 1, comprising a multi-section electric push rod 1, wherein the bottom end of the multi-section electric push rod 1 is connected with a PLC12 through an intermediate relay, the other end is vertically provided with an insulating plate 2, the top of the insulating plate 2 is provided with a current conducting plate 3 through a spring 4, the insulating plate 2 and the current conducting plate 3 are arranged in parallel, the current conducting plate 3 is connected with a annealed copper wire a6, the other end of the annealed copper wire a6 is connected with a voltage divider 7, the other end of the voltage divider 7 is connected with a annealed copper wire b13, the other end of the annealed copper wire b13 is connected with a grounding metal plate 14, the grounding metal plate 14 is vertically fixedly connected with a first electromagnet 8, the bottom of the voltage divider 7 is provided with a 7-shaped bracket, the bottom of the bracket is provided with a, the first electromagnet 8 and the second electromagnet 9 are respectively connected with a PLC12 through an intermediate relay; the output voltage port of the voltage divider 7 is connected to the analog voltage input port of the PLC 12. The model of the intermediate relay is ohm dragon LY2N-J24 VDC.
Preferably, the spring 4 and the energy storage spring 15-3 are both strong compression springs, and at least 4 springs 4 are arranged.
Preferably, the insulating plate 2 and the multi-section electric push rod 1 are oppositely provided with two bolt holes, and the insulating plate 2 and the multi-section electric push rod 1 are connected through bolts; a direct current motor 10 is arranged in the multi-section electric push rod 1, and the direct current motor 10 is respectively connected with a PLC12 through a Hall current transducer and an intermediate relay; the conductive plate 3 is a graphite plate or a tungsten copper plate.
Preferably, the voltage divider 7 is a resistor voltage divider, and the voltage divider 7 is formed by connecting 6 high-voltage glass glaze resistors in series in parallel with a rectifier bridge; the partial pressure ratio is 5000: 1.
Preferably, the first electromagnet 8 and the second electromagnet 9 are both push-pull type electromagnets with model number WBE-1683DC 24V.
Preferably, the side surface of the conductive plate 3 is provided with a screw hole a, both ends of the annealed copper wire a6 are provided with wire noses, and the wire nose at one end of the annealed copper wire a6 is connected with the screw hole a of the conductive plate 3 through a bolt a;
the two ends of the voltage divider 7 are respectively provided with an upper ground terminal and a lower ground terminal, the other end of the annealed copper wire a6 is connected with the upper ground terminal, the lower ground terminal is connected with a wire nose of the annealed copper wire b13, one side of the grounding metal plate 14 is provided with a screw hole b, and the wire nose of the other end of the annealed copper wire b13 is connected with the screw hole b of the grounding metal plate 14 through a bolt b.
Preferably, the bracket, the wedge block and the bottom plate are integrally formed, the wedge block is made of metal, and a protrusion is arranged at one end of the bottom plate, which is far away from the voltage divider 7;
the control switch 15 comprises a crank 15-2, a connecting rod 15-1 and a contact knife 15-5, a connecting hole is formed in the body of the wedge-shaped block, the second electromagnet 9 is installed in the connecting hole, a contact clamp of the second electromagnet 9 is arranged on the crank 15-2, as shown in fig. 5, the shaft of the crank 15-2 is installed on the wedge-shaped block, a rotating shaft hole a is formed in one end of the crank 15-2, a rotating shaft hole b matched with the rotating shaft hole a is formed in one end of the connecting rod 15-1, and the rotating shaft hole a and the rotating shaft hole b are installed in the middle of the contact knife 15-5 through a first rotating shaft;
the contact knife 15-5 is a metal plate.
The body of the wedge-shaped block is provided with an arc-shaped groove, one end of a contact knife 15-5 is clamped in the arc-shaped groove, the contact knife 15-5 rotates along the arc-shaped groove, the bottom of the upper ground wire terminal is provided with a contact, and the other end of the contact knife 15-5 is in contact with the contact;
the other end of the crank 15-2 is provided with a rotating shaft hole b, the protruding body is provided with a second rotating shaft, the rotating shaft hole b is installed on the second rotating shaft, and the other end of the crank 15-2 and the other end of the connecting rod 15-1 are connected with an energy storage spring 15-3.
Preferably, two ends of the energy storage spring 15-3 are fixedly connected with connecting plates, single lug plates are vertically arranged on the two connecting plates, the single lug plate at one end of the energy storage spring 15-3 is arranged on a second rotating shaft, a second rotating shaft hole is formed in one end, close to the energy storage spring 15-3, of the connecting rod 15-1, and the other end of the connecting rod 15-1 and the other end of the energy storage spring 15-3 are connected through the second rotating shaft.
Preferably, one side of the protrusion is provided with a stop block 15-4, the included angle between the stop block 15-4 and the horizontal plane is 40-60 degrees, the stop block 15-4 is in contact with the energy storage spring 15-3, and the stop block 15-4 is used for controlling the rotating limit position of the energy storage spring 15-3.
The invention relates to an automatic control device for hanging a ground wire on a contact net, which comprises the following main components:
multisection formula electric putter 1: the rotating motion of the direct current motor 10 is converted into the linear motion of the push rod, so that the conductive plate 3 and the annealed copper wire a6 are driven to be contacted with and separated from the pillar positioning tube 5;
insulating plate 2 and spring 4: the direct current motor is used for preventing current from invading through the multi-section electric push rod 1 and damaging the direct current motor 10; the close contact and separation of the current-conducting plate 3 and the pillar positioning tube 5 are realized by controlling the compression amount of the spring 4, the grounding resistance is reduced, and the grounding wire is reliably hung;
conductive plate 3: bear the instantaneous current in the process of hanging the ground wire, bear the high-voltage heavy current under the sudden strong current invasion and have certain heat resistance;
the control switch 15: after the electromagnet 2 is electrified, the cooperative motion of the connecting rod 15-1, the crank 15-2 and the energy storage spring 15-3 can realize that the contact knife 15-5 is contacted with a contact on an upper ground terminal of the voltage divider 7, so that the voltage divider 7 is short-circuited; when the second electromagnet 9 is not energized, its contact is clamped on the crank 15-2, so that the contact knife 15-5 is separated from the upper ground terminal of the voltage divider 7, as shown in fig. 5.
The invention relates to an automatic control device for hanging a ground wire on a contact net, which has the working principle as follows:
selecting a proper multi-section electric push rod 1 according to the voltage grade and the height of the maintenance line; after the hanging ground wire switch is started, the PLC12 controls the grounding metal plate 14 on the electromagnet 1 to be in contact with the steel rail 11; then the direct current motor 10 in the multi-section electric push rod 1 is controlled to rotate, the annealed copper wires a6 and the conductive plates 3 are driven to move upwards until the conductive plates 3 contact the pillar positioning tubes 5, at the moment, the upward movement of the conductive plates 3 can be blocked, namely, the load of the multi-section electric push rod 1 is increased, the PLC12 monitors the load current change of the direct current motor 10 through a Hall current transmitter, and the multi-section electric push rod 1 is controlled to stop moving after a threshold condition is set;
the conductive plate 3 and the pillar positioning tube 5 are kept in good close contact, at the moment, the voltage divider 7 is equivalently and completely connected between the annealed copper wire a6, the annealed copper wire b13 and the ground, the output voltage of the voltage divider 7 can reflect the electrification condition of a contact net line, and the PLC12 judges the electrification condition; if the contact network line has been powered off, controlling the electromagnet 2 to contract, and at this time, the contact knife 15-5 is pushed by the energy storage spring 15-3 to contact with a contact on an upper ground terminal of the voltage divider 7 to short-circuit the voltage divider 7, and at this time, equivalently, the annealed copper wire a6 and the annealed copper wire b13 are communicated with the steel rail 11, namely, completing the ground wire hanging, as shown in fig. 3;
if power is not cut off, the PLC12 controls the DC motor 10 to withdraw the push rod, controls the grounding metal plate 14 on the electromagnet 1 to separate from the steel rail 11, and closes the control switch 15, as shown in FIG. 4. The problem of among the prior art operating personnel live-line articulate ground wire, forceful electric power invasion circuit, working strength is big is solved.
The invention discloses a control method of an automatically controlled grounding wire device hung on a contact net, which is implemented according to the following steps as shown in figure 2:
step 2, the PLC12 controls the direct current motor 10 to rotate forwards to drive the multi-section electric push rod 1 to extend upwards, meanwhile, the Hall current transducer monitors the current of the direct current motor 10, when the current of the direct current motor 10 is larger than a threshold value, after t seconds, the PLC12 controls the direct current motor 10 to stop rotating, and at the moment, the conductive plate 3 is close to the pillar positioning tube 5;
in order to ensure reliable hanging connection, the pressure F between the current-conducting plate 3 and the strut positioning tube 5 on the contact network is set to be 80N, and the action of the multi-section electric push rod 1 is controlled according to the load current threshold value and the setting time t of the direct current motor 10; the threshold value is the maximum load current I of the multi-section electric push rod 1 during the unimpeded extensionmax(ii) a Because the starting instant current of the direct current motor 10 is large, setting time t needs to be set in the PLC12, wherein t is F/kv (k is the elastic coefficient N/mm of the spring 4, and v is the stretching speed mm/s of the multi-section electric push rod); converting a current signal of the direct current motor 10 into a voltage signal by using a Hall current transmitter;
Claims (10)
1. The automatically-controlled overhead contact system hanging ground wire device is characterized by comprising a multi-section type electric push rod (1), wherein the bottom end of the multi-section type electric push rod (1) is connected with a PLC (12) through an intermediate relay, the other end of the multi-section type electric push rod is vertically provided with an insulating plate (2), the insulating plate (2) is provided with a conductive plate (3) through a spring (4), the insulating plate (2) and the conductive plate (3) are arranged in parallel, the conductive plate (3) is connected with a annealed copper wire a (6), the other end of the annealed copper wire a (6) is connected with a voltage divider (7), the other end of the voltage divider (7) is connected with a annealed copper wire b (13), the other end of the annealed copper wire b (13) is connected with a grounding metal plate (14), the grounding metal plate (14) is vertically and fixedly connected with, the bottom of the bracket is provided with a bottom plate, the side face of the bracket is sequentially provided with a wedge block and a control switch (15), the wedge block and the control switch (15) are both positioned on the bottom plate, the wedge block is provided with a second electromagnet (9), and the first electromagnet (8) and the second electromagnet (9) are respectively connected with a PLC (12) through an intermediate relay; and an output voltage port of the voltage divider (7) is connected with an analog voltage input port of the PLC (12).
2. The automatic control overhead contact system ground wire hooking device of claim 1, characterized in that the spring (4) is a strong compression spring, and at least 4 springs (4) are provided.
3. The automatic control overhead contact system ground wire hooking device of claim 1, wherein the insulating plate (2) and the multi-section electric push rod (1) are oppositely provided with two bolt holes, and the insulating plate (2) and the multi-section electric push rod (1) are connected through bolts;
a direct current motor (10) is arranged in the multi-section electric push rod (1), and the direct current motor (10) is respectively connected with a PLC (12) through a Hall current transducer and an intermediate relay;
the conductive plate (3) is a graphite plate or a tungsten copper plate.
4. The automatic control overhead contact system grounding device according to claim 1, wherein the voltage divider (7) is a resistor voltage divider, and the voltage divider (7) is formed by connecting 6 high-voltage glass glaze resistors in series in parallel with a rectifier bridge.
5. The automatic control overhead contact system grounding wire hanging device according to claim 1, wherein the first electromagnet (8) and the second electromagnet (9) are both push-pull electromagnets.
6. The automatic control overhead contact system hanging ground wire device according to claim 1, wherein a screw hole a is formed in the side surface of the conductive plate (3), wire noses are arranged at two ends of the annealed copper wire a (6), and the wire nose at one end of the annealed copper wire a (6) is connected with the screw hole a of the conductive plate (3) through a bolt a;
the utility model discloses a ground connection metal sheet, including bleeder (7), ground connection metal sheet (14), ground connection metal sheet (13), ground connection metal sheet (14) and ground connection metal sheet (7), the other end of bleeder is provided with ground connection terminal and lower ground connection terminal respectively, the other end of annealed copper line a (6) is connected with last ground connection terminal, the line nose that goes up the ground connection terminal and be connected with ground connection metal sheet (14)'s screw hole b through bolt b.
7. The automatic control overhead contact system ground wire hooking device of claim 6, wherein the bracket, the wedge block and the bottom plate are integrally formed, and a protrusion is arranged at one end of the bottom plate away from the voltage divider (7);
the control switch (15) comprises a crank (15-2), a connecting rod (15-1) and a contact cutter (15-5), a connecting hole is formed in a body of the wedge-shaped block, the second electromagnet (9) is installed in the connecting hole, a contact of the second electromagnet (9) is clamped on the crank (15-2), a shaft of the crank (15-2) is installed on the wedge-shaped block, a rotating shaft hole a is formed in one end of the crank (15-2), a rotating shaft hole b matched with the rotating shaft hole a is formed in one end of the connecting rod (15-1), and the rotating shaft hole a and the rotating shaft hole b are installed in the middle of the contact cutter (15-5) through a first rotating shaft;
an arc-shaped groove is formed in the body of the wedge-shaped block, one end of the contact knife (15-5) is clamped in the arc-shaped groove, the contact knife (15-5) rotates along the arc-shaped groove, a contact is arranged at the bottom of the upper ground wire terminal, and the other end of the contact knife (15-5) is in contact with the contact;
the other end of the crank (15-2) is provided with a rotating shaft hole b, the protruding body is provided with a second rotating shaft, the rotating shaft hole b is installed on the second rotating shaft, and the other end of the crank (15-2) and the other end of the connecting rod (15-1) are connected with an energy storage spring (15-3).
8. The automatic control overhead contact system ground wire hooking device of claim 7, wherein two ends of the energy storage spring (15-3) are fixedly connected with connecting plates, a single lug plate is vertically arranged on each of the two connecting plates, the single lug plate at one end of the energy storage spring (15-3) is mounted on a second rotating shaft, a second rotating shaft hole is formed in one end, close to the energy storage spring (15-3), of the connecting rod (15-1), and the other end of the connecting rod (15-1) and the other end of the energy storage spring (15-3) are connected through the second rotating shaft.
9. The automatic control overhead contact system ground wire hooking device of claim 8, wherein a stopper (15-4) is arranged on one side of the protrusion, the included angle between the stopper (15-4) and the horizontal plane is 40-60 degrees, and the stopper (15-4) is in contact with the energy storage spring (15-3).
10. The method for controlling an automatically controlled contact net hanging ground wire device according to claim 9, is implemented by the following steps:
step 1, placing an automatically controlled overhead contact system ground wire hanging device between a pillar positioning pipe (5) and a steel rail (11), wherein the pillar positioning pipe (5) is positioned on a contact network line, starting a PLC (12), and the PLC (12) controls a grounding metal plate (14) on a first electromagnet (8) to be in contact with the steel rail (11);
step 2, the PLC (12) controls the direct current motor (10) to rotate forwards to drive the multi-section electric push rod (1) to extend upwards, meanwhile, the current of the direct current motor (10) is monitored through the Hall current transducer, when the current of the direct current motor (10) is larger than a threshold value, after t seconds, the PLC (12) controls the direct current motor (10) to stop rotating, and at the moment, the conductive plate (3) is in close contact with the pillar positioning tube (5);
step 3, the PLC (12) monitors the voltage of the voltage divider (7), if the voltage of a contact network line is smaller than 15kV, power failure is indicated, the PLC (12) controls the second electromagnet (2) to contract, the crank (15-2) is released, the energy storage spring (15-3) drives the contact knife (15-5) to be in contact with a contact on an upper ground wire terminal, loop communication between the steel rail (11) and the contact network is achieved, and namely the conductive plate (3) is in close contact with the pillar positioning tube (5); if the voltage of the contact net line is not less than 15kV, power failure is indicated, the PLC (12) controls the grounding metal plate (14) on the first electromagnet (8) to be separated from the steel rail (11), controls the direct current motor (10) to rotate reversely, and drives the multi-section type electric push rod (1) to contract downwards, so that the conductive plate (3) is separated from the pillar positioning pipe (5).
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| CN112217001A (en) * | 2020-09-14 | 2021-01-12 | 广东雅达电子股份有限公司 | Contact net safety measure operation earthing device |
| CN112152147A (en) * | 2020-09-23 | 2020-12-29 | 广西电网有限责任公司贵港供电局 | Grounding wire dismounting auxiliary device and grounding wire dismounting system |
| CN112751215B (en) * | 2021-02-20 | 2024-07-12 | 河北宇牛电气设备有限公司 | Automatic grounding system based on contact net operation vehicle |
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