220kV isolation switch loop resistor high-altitude test wiring device

Abstract

The invention provides a 220kV disconnecting switch loop resistor high-altitude test wiring device. At present, in the process of testing the contact resistance of a conductive loop of a 220kV disconnecting switch, a current line and a voltage line are difficult to be firmly contacted on a wiring terminal of the disconnecting switch by the existing high-altitude wiring clamp, and the test data is often much larger than the actual loop resistance value, so that misjudgment is caused, and the maintenance strategy is further influenced. In order to correctly reflect objective data, a wiring clamp and an isolating switch wiring terminal are required to be fully contacted well, an operator often carries out high-altitude operation by taking a bucket arm vehicle, building a multi-layer insulating scaffold and the like, wiring and wire removing work is often completed through displacement and transposition, and the whole test process is time-consuming, labor-consuming and extremely low in efficiency. The high-altitude electric power test clamp can be operated on the ground to perform test wiring on high-altitude equipment, and the existing high-altitude wiring clamp mainly has the following defects: 1, a plurality of push-pull tubes are fixedly connected by screws section by section, so that the weight is heavy, and the carrying is inconvenient; and 2, the return mechanism has more parts and is complex in structure. Therefore, the invention mainly aims to overcome the defects, and provides the telescopic high-altitude electric power test clamp which is simple in structure and convenient to carry and use.

Description

Technical Field

[0001] The invention relates to a special tool for wiring contact resistance of a conductive circuit of a high-voltage device, in particular to a high-altitude testing wiring device for a circuit resistance of a 220kV isolating switch. Background Art

[0002] At present, in the process of testing the contact resistance of the conductive circuit of the 220kV disconnector, it is difficult for the existing high-altitude wiring clamps to firmly contact the current line and the voltage line on the disconnector terminal. The test data is often much larger than the actual circuit resistance value, resulting in misjudgment, which in turn affects the maintenance strategy. In order to correctly reflect the objective data, the wiring clamps and the disconnector terminal must be fully in good contact. The operators need to carry out high-altitude operations such as riding a boom truck and building multi-layer insulating scaffolding, and often need to complete the wiring and removal work by shifting and changing positions. The entire testing process is time-consuming and labor-intensive, and inefficient.

[0003] The high-altitude power test clamp can be operated on the ground to test and connect the high-altitude equipment, which simplifies the work process. However, the existing high-altitude wiring clamps have the following main shortcomings: 1. The push-pull tube uses multiple push-pull tubes to be fixed and connected section by section with screws, which is heavy and inconvenient to carry. 2. The return mechanism has many parts and a complex structure. Summary of the invention

[0004] In view of this, the main purpose of the present invention is to overcome the shortcomings of the existing aerial wiring clamps, such as heavy weight, inconvenience in carrying, and complex structure.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a 220kV disconnector loop resistance high-altitude test wiring device, comprising: a jaw, the jaw comprising a fixed jaw and a movable jaw, the fixed jaw is mounted on a fixed jaw bracket, the movable jaw is mounted on a movable jaw bracket, and a current connecting wire is connected between the fixed jaw and the movable jaw; a slideway, a slideway bracket is provided at the first end of the slideway; a fixed jaw bracket is provided at the second end of the slideway away from the slideway bracket, and the fixed jaw is fixed to the slideway through the fixed jaw bracket; the movable jaw is connected to the slideway in the middle of the slideway through the movable jaw bracket, and the movable jaw bracket can slide on the slideway, wherein the middle of the slideway is between the two ends of the slideway; a fixed pulley, the fixed pulley is mounted on one end of the slideway where the fixed jaw bracket is provided; a push-pull mechanism, the push-pull mechanism is connected to the slideway through the slideway bracket; a traction wire rope, the first end of the traction wire rope is connected to the movable jaw bracket, and the second end of the traction wire rope is connected to the push-pull mechanism after being wound around the fixed pulley.

[0006] Furthermore, the push-pull mechanism includes a push-pull locking device, a push-pull tube, and a catheter; the locking device is connected to the traction wire rope, and the locking device is covered with a catheter on the outside, the first end of the catheter is on the slide bracket, and the second end of the catheter away from the slide bracket is covered in the push-pull tube.

[0007] Furthermore, the locking device includes: a rack, the rack is placed inside the guide tube, the end of the rack away from the slide bracket is connected to the guide tube, and the rack passes through a fixed seat; a wire rope connecting tube, the wire rope connecting tube is hinged on the upper end of the fixed seat, the upper end of the wire rope connecting tube is connected to the traction wire rope, and the lower end of the wire rope connecting tube is provided with a compression spring, wherein the upper end of the fixed seat is an end of the fixed seat close to the slide bracket, the upper end of the wire rope connecting tube is an end of the wire rope connecting tube close to the slide bracket, and the lower end of the wire rope connecting tube is an end of the wire rope connecting tube away from the slide bracket; a pawl, the pawl is hinged on the fixed seat through a pin shaft. In the middle part of the fixed seat, the pawl matches the rack, and the end of the compression spring away from the wire rope connecting tube abuts against the pawl, wherein the middle part of the fixed seat is between the two ends of the fixed seat; a push-pull inclined block, the push-pull inclined block is hinged to the lower end of the fixed seat, and the end of the push-pull inclined block close to the pawl is provided with a push-pull inclined surface, and the push-pull inclined surface abuts against the pawl, and the push-pull rod is hinged to the lower end of the push-pull inclined block, and the lower end of the push-pull rod is connected to the push-pull tube, wherein the lower end of the fixed seat is the end of the fixed seat away from the slide bracket, the lower end of the push-pull inclined block is the end of the push-pull inclined block away from the slide bracket, and the lower end of the push-pull rod is the end of the push-pull rod away from the slide bracket.

[0008] Furthermore, it also includes a return mechanism, one end of which is connected to the movable jaw bracket, and the other end of which is connected to the slide bracket.

[0009] Furthermore, the return mechanism is a return spring.

[0010] Furthermore, the movable jaw bracket penetrates the slideway in a direction perpendicular to the slideway and cooperates with the slide groove, so that the movable jaw can slide in the slide groove through the movable jaw bracket to move closer to or away from the fixed jaw.

[0011] Furthermore, there are two fixed pulleys, which are installed side by side at one end of the slideway where the fixed jaw bracket is provided; there are two traction steel ropes, which are parallel to each other, and the first ends of the two traction steel ropes are connected to the movable jaw bracket, and the second ends of the two traction steel ropes are connected to the push-pull mechanism after being wound around the corresponding fixed pulleys.

[0012] Furthermore, a pressure spring is provided between the fixed jaw and the fixed jaw bracket, and a pressure spring is provided between the movable jaw and the movable jaw bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 It is an enlarged schematic diagram of the clamp head structure of the present invention;

[0015] Figure 3 It is an enlarged schematic diagram of the clamp tail structure of the present invention;

[0016] Figure 4 It is a schematic structural diagram of the push-pull locking device of the present invention.

[0017] The above drawings include the following reference numerals:

[0018] 1. Jaw; 11. Fixed jaw; 12. Fixed jaw bracket; 13. Pressure spring; 14. Moving jaw; 15. Moving jaw bracket; 16. Pressure spring; 2. Slide; 3. Slide bracket; 4. Fixed pulley; 5. Traction wire rope; 6. Current connecting wire; 7. Wire; 8. Return mechanism; 9. Push-pull mechanism; 91. Push-pull locking device; 92. Push-pull tube; 93. Conduit; 911. Fixed seat; 912. Rack; 913. Ratchet; 914. Pin; 915. Pressure spring; 916. Wire rope connecting tube; 917. Push-pull inclined block; 9171. Push-pull inclined surface; 918. Push-pull rod; DETAILED DESCRIPTION

[0019] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It will be appreciated that the specific embodiments described herein are only used to explain the relevant inventions, rather than to limit the inventions. It should also be noted that, for ease of description, only portions related to the relevant inventions are shown in the accompanying drawings. It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0020] According to an embodiment of the present invention, a 220kV isolating switch loop resistance high-altitude test wiring device is provided.

[0021] The present invention is further described with reference to the accompanying drawings and specific embodiments. Figure 1 and Figure 2 As shown, according to a 220kV isolating switch loop resistance high-altitude test wiring device, the device includes:

[0022] The jaw 1 comprises a fixed jaw 11 and a movable jaw 14, wherein the fixed jaw 11 is mounted on a fixed jaw bracket 12, and the movable jaw 14 is mounted on a movable jaw bracket 15, and a current connection wire 6 is connected between the fixed jaw 11 and the movable jaw 14;

[0023] A slideway 2, wherein a slideway bracket 3 is provided at the first end of the slideway 2; a fixed jaw bracket 12 is provided at the second end of the slideway 2 away from the slideway bracket 3, and the fixed jaw 11 is fixed to the slideway 2 through the fixed jaw bracket 12; the movable jaw 14 is connected to the slideway 2 at the middle part of the slideway 2 through the movable jaw bracket 15, and the movable jaw bracket 15 can slide on the slideway 2, wherein the middle part of the slideway 2 is between the two ends of the slideway 2;

[0024] A fixed pulley 4, the fixed pulley 4 is mounted on one end of the slideway 2 where the fixed jaw bracket 12 is provided;

[0025] A push-pull mechanism 9, wherein the push-pull mechanism 9 is connected to the slide 2 via the slide bracket 3;

[0026] A traction steel wire rope 5 , wherein the first end of the traction steel wire rope 5 is connected to the movable jaw bracket 15 , and the second end of the traction steel wire rope 5 is connected to the push-pull mechanism 9 after being wound around the fixed pulley 4 .

[0027] By pushing and pulling the push-pull mechanism 9 , the traction wire rope 5 can be driven to move, thereby driving the movable jaw bracket 15 to slide on the slideway 2 to adjust the size of the jaw 1 .

[0028] like Figure 3 As shown, in a preferred embodiment of the present invention, the push-pull mechanism 9 includes a push-pull locking device 91, a push-pull tube 92, and a conduit 93; the locking device 91 is connected to the traction wire rope 5, and a conduit 93 is sleeved on the outside of the locking device 91, and the first end of the conduit 93 is on the slide bracket 3, and the second end of the conduit 93 away from the slide bracket 3 is sleeved in the push-pull tube 92.

[0029] like Figure 4 As shown, further, the locking device 91 includes:

[0030] A rack 912, wherein the rack 912 is disposed inside the conduit 93, an end of the rack 912 away from the slide bracket 3 is connected to the conduit 93, and the rack 912 passes through a fixing seat 911;

[0031] A wire rope connecting tube 916, wherein the wire rope connecting tube 916 is hinged at the upper end of the fixing seat 911, the upper end of the wire rope connecting tube 916 is connected to the traction wire rope 5, and a compression spring 915 is provided at the lower end of the wire rope connecting tube 916, wherein the upper end of the fixing seat 911 is an end of the fixing seat 911 close to the slide bracket 3, the upper end of the wire rope connecting tube 916 is an end of the wire rope connecting tube 916 close to the slide bracket 3, and the lower end of the wire rope connecting tube 916 is an end of the wire rope connecting tube 916 away from the slide bracket 3;

[0032] A pawl 913, wherein the pawl 913 is hinged to the middle of the fixing seat 911 through a pin 914, the pawl 913 matches the rack 912, and one end of the compression spring 915 away from the wire rope connecting tube 916 abuts against the pawl 913, wherein the middle of the fixing seat 911 is between the two ends of the fixing seat 911;

[0033] A push-pull inclined block 917, wherein the push-pull inclined block 917 is hinged at the lower end of the fixed seat 911, and a push-pull inclined surface 9171 is provided at one end of the push-pull inclined block 917 close to the pawl 913, and the push-pull inclined surface 9171 abuts against the pawl 913, and the push-pull inclined surface 9171 is hinged at the lower end of the push-pull inclined block 917 to have the push-pull rod 918, and the lower end of the push-pull rod 918 is connected to the push-pull tube 92, wherein the lower end of the fixed seat 911 is the end of the fixed seat 911 away from the slide bracket 3, the lower end of the push-pull inclined block 917 is the end of the push-pull inclined block 917 away from the slide bracket 3, and the lower end of the push-pull rod 918 is the end of the push-pull rod 918 away from the slide bracket 3.

[0034] The rack 912 and the pawl 913 cooperate to limit the position, so that the opening size of the jaw 1 in the embodiment can be fixed in actual work.

[0035] In a preferred embodiment of the present invention, a return mechanism 8 is further included, one end of which is connected to the movable jaw bracket 15, and the other end of which is connected to the slideway bracket 3. Further, the return mechanism 8 is a return spring. The return mechanism 8 can prevent the opening of the jaw 1 from changing due to the deadweight of the movable jaw 14 and the movable jaw bracket 15.

[0036] like Figure 1 As shown, in a preferred embodiment of the present invention, the movable jaw bracket 15 passes through the slide 2 in a direction perpendicular to the slide 2 and cooperates with the slide groove 21, so that the movable jaw 14 can slide in the slide groove 21 through the movable jaw bracket 15 to move closer to or away from the fixed jaw 11.

[0037] In a preferred embodiment of the present invention, there are two fixed pulleys 4 and two traction steel ropes 5, which respectively improve the reliability of the embodiment.

[0038] In a preferred embodiment of the present invention, a pressure spring 13 is provided between the fixed jaw 11 and the fixed jaw bracket 12, and a pressure spring 16 is provided between the movable jaw 14 and the movable jaw bracket 15, which can compensate for the disadvantage that the rack 912 and the ratchet 913 cannot fit the wire due to the fixed tooth ratio.

[0039] In actual work, when using the present invention, the staff only needs to lift the present invention and place it on the wire, and then push and pull the conduit to adjust the jaws to a size suitable for the wire diameter, and then the test can be carried out.

[0040] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A 220kV isolating switch loop resistance high-altitude test wiring device, characterized in that: include: A jaw (1), the jaw (1) comprising a fixed jaw (11) and a movable jaw (14), the fixed jaw (11) being mounted on a fixed jaw bracket (12), the movable jaw (14) being mounted on a movable jaw bracket (15), and a current connecting wire (6) being connected between the fixed jaw (11) and the movable jaw (14); A slideway (2), wherein a slideway bracket (3) is provided at the first end of the slideway (2); a fixed jaw bracket (12) is provided at the second end of the slideway (2) away from the slideway bracket (3), and the fixed jaw (11) is fixed to the slideway (2) through the fixed jaw bracket (12); the movable jaw (14) is connected to the slideway (2) at the middle part of the slideway (2) through the movable jaw bracket (15), and the movable jaw bracket (15) can slide on the slideway (2), wherein the middle part of the slideway (2) is between the two ends of the slideway (2); A fixed pulley (4), the fixed pulley (4) being mounted on one end of the slideway (2) provided with the fixed jaw bracket (12); A push-pull mechanism (9), wherein the push-pull mechanism (9) is connected to the slideway (2) via the slideway bracket (3); A traction wire rope (5), wherein the first end of the traction wire rope (5) is connected to the movable jaw bracket (15), and the second end of the traction wire rope (5) is connected to the push-pull mechanism (9) after being wound around the fixed pulley (4).

2. A 220kV isolating switch loop resistance high-altitude test wiring device according to claim 1, characterized in that: The push-pull mechanism (9) comprises a push-pull locking device (91), a push-pull tube (92), and a guide tube (93); the locking device (91) is connected to the traction wire rope (5), and the locking device (91) is covered with a guide tube (93) on the outside, the first end of the guide tube (93) is connected to the slide bracket (3), and the second end of the guide tube (93) away from the slide bracket (3) is covered in the push-pull tube (92).

3. A 220kV isolating switch loop resistance high-altitude test wiring device according to claim 2, characterized in that: The locking device (91) comprises: A rack (912), the rack (912) being disposed inside the conduit (93), one end of the rack (912) away from the slideway bracket (3) being connected to the conduit (93), and the rack (912) passing through the fixing seat (911); A wire rope connecting tube (916), wherein the wire rope connecting tube (916) is hinged on the upper end of the fixing seat (911), the upper end of the wire rope connecting tube (916) is connected to the traction wire rope (5), and the lower end of the wire rope connecting tube (916) is provided with a compression spring (915), wherein the upper end of the fixing seat (911) is an end of the fixing seat (911) close to the slide bracket (3), the upper end of the wire rope connecting tube (916) is an end of the wire rope connecting tube (916) close to the slide bracket (3), and the lower end of the wire rope connecting tube (916) is an end of the wire rope connecting tube (916) away from the slide bracket (3); A pawl (913), wherein the pawl (913) is hinged to the middle part of the fixing seat (911) through a pin shaft (914), the pawl (913) matches the rack (912), and one end of the compression spring (915) away from the wire rope connecting tube (916) abuts against the pawl (913), wherein the middle part of the fixing seat (911) is between the two ends of the fixing seat (911); A push-pull inclined block (917), wherein the push-pull inclined block (917) is hinged at the lower end of the fixed seat (911), and a push-pull inclined surface (9171) is provided at one end of the push-pull inclined block (917) close to the pawl (913), and the push-pull inclined surface (9171) abuts against the pawl (913), and the push-pull inclined surface (9171) is hinged at the lower end of the push-pull inclined block (917) to be connected with the push-pull rod (918), and the lower end of the push-pull rod (918) is connected to the push-pull tube (92), wherein the lower end of the fixed seat (911) is the end of the fixed seat (911) away from the slide bracket (3), the lower end of the push-pull inclined block (917) is the end of the push-pull inclined block (917) away from the slide bracket (3), and the lower end of the push-pull rod (918) is the end of the push-pull rod (918) away from the slide bracket (3).

4. A 220kV isolating switch loop resistance high-altitude test wiring device according to claim 1, characterized in that: It also comprises a return mechanism (8), one end of which is connected to the movable jaw bracket (15), and the other end of which is connected to the slideway bracket (3).

5. A 220kV isolating switch loop resistance high-altitude test wiring device according to claim 4, characterized in that: The return mechanism (8) is a return spring.

6. A 220kV isolating switch loop resistance high-altitude test wiring device according to claim 1, characterized in that: The movable jaw bracket (15) passes through the slideway (2) in a direction perpendicular to the slideway (2) and cooperates with the slide groove (21) so that the movable jaw (14) can slide in the slide groove (21) through the movable jaw bracket (15) to move closer to or away from the fixed jaw (11).

7. A 220kV isolating switch loop resistance high-altitude test wiring device according to claim 1, characterized in that: There are two fixed pulleys (4), and the two fixed pulleys (4) are installed side by side at one end of the slideway (2) where the fixed jaw bracket (12) is provided; There are two traction steel wires (5), which are parallel to each other. The first ends of the two traction steel wires (5) are connected to the movable jaw bracket (15), and the second ends of the two traction steel wires (5) are connected to the push-pull mechanism (9) after being wound around the corresponding fixed pulleys (4).

8. A 220kV isolating switch loop resistance high-altitude test wiring device according to claim 1, characterized in that: A pressure spring (13) is provided between the fixed jaw (11) and the fixed jaw support (12), and a pressure spring (16) is provided between the movable jaw (14) and the movable jaw support (15).

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