CN218826721U - Grounding switch device - Google Patents

Abstract

The utility model discloses an earthing switch device, including switch body and the actuating mechanism who is connected with switch body, switch body includes the base, install the insulator on the base, install the inlet wire contact on insulator top and install on the base and be used for being connected or the ground connection sword of disconnection with the inlet wire contact, install the ground connection row on the base, be provided with the copper bar flexible coupling on the ground connection sword, the copper bar flexible coupling is connected with the ground connection row, actuating mechanism is including rotating the drive main shaft of installing on the base, the bottom fixed mounting of ground connection sword is on the drive main shaft. The utility model discloses a set up copper bar flexible coupling on the earthing knife, can ensure to have higher through-current nature between inlet wire contact and the ground connection row when closing a floodgate, remaining electric charge can switch on with the earthing pole in the twinkling of an eye, reduces earthing switch because of the electric current is too high, resistance is too big, and the condition that appears generating heat in a large number takes place, and in addition, copper bar flexible coupling still improves the earthing knife and rotates the flexibility, reduces the impact of earthing knife to the inlet wire contact.

Description

Grounding switch device

Technical Field

The utility model belongs to the technical field of the track traffic power supply, concretely relates to earthing switch device.

Background

The earthing switch is a mechanical earthing device used for releasing static electricity of the equipment and the loop to be repaired, and can ensure the personal safety of the maintainers during power failure repair. It can withstand current for a certain time in abnormal situations (such as short-circuit) but does not pass load current in normal situations.

The earthing switch usually includes ground bar, inlet wire contact and earthing knife, realizes being connected or separating of ground bar and inlet wire contact through the motion of earthing knife, however, current earthing knife and ground bar are mostly rigid connection, and the electric current circulates to the ground bar through the earthing knife from the inlet wire contact, and resistance is big, and the current capacity is poor, and it is more serious to generate heat. Therefore, a high-current grounding switch should be provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that lie in to above-mentioned prior art not enough, provide a grounding switch device, it is rational in infrastructure, design benefit, through set up copper bar flexible coupling on the earthing switch, can ensure to have higher through-current nature between inlet wire contact and the ground connection row when closing a floodgate, residual charge can switch on with the earthing pole in the twinkling of an eye, it is too high because of the electric current to reduce grounding switch, resistance is too big, and the condition that appears generating heat in a large number takes place, furthermore, copper bar flexible coupling still improves the earthing switch and rotates the flexibility, reduce the impact of earthing switch to the wire contact.

In order to solve the technical problem, the utility model adopts the technical scheme that: an earthing switch device characterized in that: including the switch body and with actuating mechanism of this body coupling of switch, the switch body include the base, install insulator on the base, install the inlet wire contact on insulator top with install on the base and be used for with the earthing knife that the inlet wire contact is connected or is broken off, install ground connection row on the base, be provided with the copper bar flexible coupling on the earthing knife, the copper bar flexible coupling with the earthing row is connected, actuating mechanism installs including rotating drive main shaft on the base, the bottom fixed mounting of earthing knife is in on the drive main shaft.

The grounding switch is characterized in that: the driving main shaft is provided with a limiting assembly, and the limiting assembly comprises a limiting shaft sleeve, and an opening limiting block and a closing limiting block which are fixed on the limiting shaft sleeve and arranged along the radial direction of the limiting shaft sleeve; the base is fixedly provided with a retaining strip, the opening limiting block is provided with an opening limiting bolt which is used for abutting against the retaining strip when opening, and the closing limiting block is provided with a closing limiting bolt which is used for abutting against the retaining strip when closing.

The grounding switch is characterized in that: the inlet wire contact is the sheet metal component, the middle part of inlet wire contact is the structure of buckling.

The grounding switch is characterized in that: the insulator is a silicon rubber composite insulator, and the creepage distance of the insulator is not less than 1420mm.

Compared with the prior art, the beneficial effects of this application are as follows:

1. the utility model discloses a set up copper bar flexible coupling on the earthing switch, can ensure to have higher through-flow nature between inlet wire contact and the ground connection row when closing a floodgate, remaining electric charge can switch on with the earthing pole in the twinkling of an eye, reduces earthing switch because of the electric current is too high, resistance is too big, and the condition that appears generating heat in a large number takes place.

2. The utility model discloses a copper bar flexible coupling can improve ground connection sword and rotate the flexibility, reduces the impact of ground connection sword to the bonding wire contact.

3. The utility model has the advantages of simple structure and reasonable design, low in manufacturing cost, facilitate promotion is used.

To sum up, the utility model discloses a set up the copper bar flexible coupling on the earthing switch, can ensure to have higher through-current nature between inlet wire contact and the ground connection row when closing a floodgate, remaining electric charge can switch on with the earthing pole in the twinkling of an eye, reduces earthing switch because of the electric current too high, resistance is too big, and the condition that appears generating heat in a large number takes place in addition, the copper bar flexible coupling still improves the earthing switch and rotates the flexibility, reduces the impact of earthing switch to the contact.

Drawings

Fig. 1 is a schematic structural view of a closing state of the utility model;

FIG. 2 is a schematic top view of the structure of FIG. 1;

fig. 3 is a schematic view of the connection relationship between the limiting component and the driving spindle according to the present invention.

Description of reference numerals:

1-a base; 2, an insulator; 3-driving the main shaft;

4, grounding a knife; 5-1-an incoming line contact; 5-2-a ground bar;

6-copper bar flexible connection; 8-1-limit shaft sleeve; 8-2-a brake-separating limiting block;

8-3-closing limiting block; 8-4-brake separating limit bolt; 8-5-closing limit bolt;

9-a repellent strip; 10-linkage mechanism.

Detailed Description

As shown in fig. 1 to 3, the utility model discloses a switch body and the actuating mechanism who is connected with the switch body, the switch body includes base 1, install insulator 2 on base 1, install inlet wire contact 5-1 on 2 tops of insulator and install on base 1 and be used for being connected with inlet wire contact 5-1 or the earthing knife 4 of disconnection, install earthing bar 5-2 on the base 1, be provided with copper bar flexible coupling 6 on the earthing knife 4, copper bar flexible coupling 6 is connected with earthing bar 5-2, actuating mechanism is including rotating the drive main shaft 3 of installing on base 1, the bottom fixed mounting of earthing knife 4 is on drive main shaft 3.

In the utility model, by arranging the copper bar flexible connection 6 on the grounding knife 4, the high current flowing between the incoming line contact 5-15 and the grounding bar 5-2 can be ensured during closing, the residual charge can be instantly conducted with the grounding electrode, and the occurrence of the condition that the grounding switch device generates a large amount of heat due to overhigh current and overlarge resistance is reduced; secondly, the flexibility of rotation of the grounding knife 4 can be improved through the copper bar flexible connection 6, and the impact of closing is reduced.

When in actual use, the copper bar flexible connection 6 is made of copper tinned braided stranded wires.

In practical use, one end of the driving spindle 3 can be connected with the motor through the link mechanism 10, and the rotating motor can drive the link mechanism 10, so that the link mechanism 10 further drives the grounding knife 4 to do circular arc swing around the axis of the driving spindle 3, and connection or separation with the wire inlet contact 5-1 is realized. The position of the grounding knife 4 when the grounding knife is connected with the incoming line contact 5-1 is marked as a switch-on position, and the position of the grounding knife 4 when the grounding knife is separated from the incoming line contact 5-1 to a position with a certain preset distance from the incoming line contact 5-1 is marked as a switch-off position.

As shown in fig. 2 and fig. 3, a limiting assembly is arranged on the driving spindle 3, and comprises a limiting shaft sleeve 8-1, an opening limiting block 8-2 and a closing limiting block 8-3 which are fixed on the limiting shaft sleeve 8-1 and arranged along the radial direction of the limiting shaft sleeve 8-1; the base 1 is fixedly provided with a resisting strip 9, the opening limiting block 8-2 is provided with an opening limiting bolt 8-4 used for being abutted against the resisting strip 9 during opening, and the closing limiting block 8-3 is provided with a closing limiting bolt 8-5 used for being abutted against the resisting strip 9 during closing.

The utility model discloses in, through set up spacing subassembly on drive spindle 3, can make separating brake stopper 8-2 and combined floodgate stopper 8-3 follow drive spindle 3's rotation and rotate, on grounding switch 4's pivoted orbit, it is spacing to 4 inlet wires of grounding switch, when preventing the divide-shut brake, grounding switch 4 rotates and surpasss separating brake position or closing position, grounding switch 4 can move to predetermineeing the position when guaranteeing the separating brake, grounding switch 4 surpasss the contact surface with inlet wire contact 5-1 when avoiding closing a floodgate to ensure grounding switch 4 and inlet wire contact 5-1's reliable connection.

The utility model discloses in, through adjusting separating brake limit bolt 8-4 and combined floodgate limit bolt 8-5, can adjust the separating brake position and the closing position of earthing switch 4 according to predetermineeing the requirement.

In actual use, in the switching-on and switching-off process, the driving main shaft 3 drives the grounding knife 4 to rotate, the switching-off limiting block 8-2 and the switching-on limiting block 8-3 both rotate along with the limiting shaft sleeve 8-1 on the driving main shaft 3 as shown in the figure 3, and during switching-off, the grounding knife 4 rotates anticlockwise until the switching-off limiting bolt 8-4 abuts against the top surface of the resisting strip 9, so that the grounding knife 4 cannot rotate anticlockwise continuously, and the grounding knife 4 can be prevented from rotating beyond a switching-off position; during closing, the grounding knife 4 rotates clockwise until the closing limiting bolt 8-5 abuts against the top surface of the stop strip 9, so that the grounding knife 4 cannot rotate clockwise continuously, the grounding knife 4 cannot exceed the contact surface of the wire inlet contact 5-1 under the condition that the closing is in place, and reliable connection between the grounding knife 4 and the wire inlet contact 5-1 is ensured.

As shown in fig. 1, the incoming line contact 5-1 is a sheet metal part, and the middle part of the incoming line contact 5-1 is of a bent structure.

In this embodiment, the bending strength of the incoming line contact 5-1 can be increased by the bending structure in the middle of the incoming line contact 5-1, so as to ensure that the incoming line contact 5-1 can bear large-amplitude jitter caused by electromotive force when passing a short-time large current.

As shown in fig. 1, the insulator 2 is a silicon rubber composite insulator, and the creepage distance of the insulator 2 is not less than 1420mm.

In the utility model, the insulator 2 made of silicon rubber composite material is adopted, so that the incoming line contact 5-1 connected to the insulator 2 can bear larger bending moment and torque; through adopting creepage distance to be greater than 1420 mm's insulator 2, make the utility model discloses have higher insulating properties, can be applicable to outdoor conditions.

In practical use, because one end of the incoming line contact 5-1 is used for wiring, and the other end of the incoming line contact 5-1 is used for being connected with or separated from the grounding knife 4, the incoming line contact 5-1 needs to bear larger bending moment and torque, and the incoming line contact 5-1 is fixedly arranged at the top of the insulator 2, the insulator 2 of the silicon rubber composite material product has higher bending resistance and torsion resistance, so that the incoming line contact 5-1 can bear external force brought by wiring and the force of the grounding knife 4 to the incoming line contact 5-1; in addition, the 1min power frequency withstand voltage of the insulator 2 made of the silicon rubber composite material product can reach 118kV, and the insulator is suitable for outdoor conditions.

Above, only the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within range of protection.

Claims (4)

1. An earthing switch device characterized in that: including the switch body and with this body coupling's of switch actuating mechanism, the switch body includes base (1), installs insulator (2) on base (1), install inlet wire contact (5-1) on insulator (2) top and install on base (1) and be used for with earthing knife (4) that inlet wire contact (5-1) are connected or are broken off, install ground connection row (5-2) on base (1), be provided with copper bar flexible coupling (6) on earthing knife (4), copper bar flexible coupling (6) with ground connection row (5-2) are connected, actuating mechanism installs including rotating drive main shaft (3) on base (1), the bottom fixed mounting of earthing knife (4) is in on drive main shaft (3).

2. An earthing switch device according to claim 1, characterized in that: the driving main shaft (3) is provided with a limiting assembly, and the limiting assembly comprises a limiting shaft sleeve (8-1), and a switching-off limiting block (8-2) and a switching-on limiting block (8-3) which are fixed on the limiting shaft sleeve (8-1) and are radially arranged along the limiting shaft sleeve (8-1);

the brake switch comprises a base (1), a blocking strip (9) is fixedly installed on the base (1), a brake switch limiting bolt (8-4) used for being abutted against the blocking strip (9) during brake switch-off is installed on a brake switch limiting block (8-2), and a brake switch limiting bolt (8-5) used for being abutted against the blocking strip (9) during brake switch-on is installed on a brake switch limiting block (8-3).

3. An earthing switch device according to claim 2, characterized in that: the incoming line contact (5-1) is a sheet metal part, and the middle part of the incoming line contact (5-1) is of a bending structure.

4. An earthing switch device according to any one of claims 1-3, characterized in that: the insulator (2) is a silicon rubber composite insulator, and the creepage distance of the insulator (2) is not less than 1420mm.

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