Power transmission line jumper wire fitting replacement tool

Abstract

The utility model discloses a power transmission line jumper wire fitting replacement tool, which belongs to the technical field of power transmission line jumper wire fittings and comprises a supporting part, a hanging plate connecting part connected with the supporting part, traction parts arranged at two ends of the supporting part and steel pipe connecting parts connected with the tail ends of the traction parts. The hanging plate connecting part is connected with a fitting, and the steel pipe connecting part is connected with a steel pipe; the hanging plate connecting part comprises two U-shaped plates arranged on the two sides of the fitting; the supporting part comprises two cross arms which are arranged in parallel and four inclined arms which are obliquely arranged upwards; one end of the inclined arm is fixedly connected with the cross arm, and the other end is fixedly connected with the hanging plate connecting part; the steel pipe connecting part comprises a U-shaped clamping seat, a thrust bearing, a lower lead screw nut and a U-shaped clamp; the U-shaped clamps are inserted into the two ends of the U-shaped clamping base and are fastened through bolts to fix and support the steel pipe. According to the utility model, the reliable connection in the hardware fitting replacement process is realized, the straightness of the steel pipe in the hardware fitting replacement process is ensured, and the operation of replacement personnel is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of jumper fittings for transmission lines, in particular to a replacement tool for jumper fittings of transmission lines. Background Art

[0002] Fittings, also known as electrical fittings or line fittings, refer to metal accessories used to connect, combine and protect various equipment in the power system. They are mainly used to transmit mechanical loads and electrical loads and play a certain protective role for the equipment. There are many types of fittings, including suspension clamps, strain clamps, connecting fittings, splicing fittings, protective fittings, equipment clamps, T-type clamps, busbar fittings, guy wire fittings, etc.

[0003] In a transmission line, fittings are metal accessories that play important roles in connecting, fixing, supporting and protecting conductors, insulators, etc. As the operation time of the line increases, the fittings may need to be replaced due to fatigue, corrosion, damage or other reasons. The replacement of fittings is part of the maintenance and upgrade of transmission lines to ensure the safe, stable and efficient operation of the power grid. At present, there is no dedicated fitting replacement tool, and operators need to use general-purpose tools such as chain hoists for traction replacement. However, these tools are prone to slipping during use, resulting in the support steel pipe, conductor, etc. jumping off, slipping or overturning.

[0004] The prior art is that the staff uses a chain hoist to lift the support steel pipe in the middle of the jumper. The upper end of the chain hoist is tied to the hanging point through a wire rope sleeve, and the lower end is tied to the support steel pipe. After tying, tighten the chain hoist to lift the steel pipe. At this time, the weight of the conductor, accessories, fittings, etc. loaded on the steel pipe is borne by the chain hoist and no longer by the fittings. At this time, the fittings within the red circle in the figure can be replaced.

[0005] Pulling through a chain hoist, with its upper and lower ends tied to the hanging point and the steel pipe respectively, has the following disadvantages:

[0006] 1. The chain hoist is connected by tying with a wire rope sleeve, and the connection is unreliable;

[0007] 2. The chain hoist pulls on one side of the fitting, which is likely to cause the overall structure to overturn;

[0008] 3. The overall weight of the chain hoist is large, which is inconvenient for tower climbers to carry. Summary of the Utility Model

[0009] The technical problem to be solved by the utility model is to provide a replacement tool for jumper fittings of transmission lines, which realizes reliable connection during the fitting replacement process, ensures the straightness of the steel pipe during the fitting replacement process, and facilitates the operation of the replacement personnel.

[0010] To solve the above technical problems, the technical solution adopted by the utility model is:

[0011] A replacement tool for jumper fittings of a transmission line, comprising a support part, a hanging plate connection part connected to the support part, a pulling part arranged at both ends of the support part, and a steel pipe connection part connected to the end of the pulling part; the hanging plate connection part is connected to the fitting, and the steel pipe connection part is connected to the steel pipe.

[0012] A further improvement of the technical solution of the present utility model lies in that: the hanging plate connection part includes two U-shaped plates arranged on both sides of the fitting.

[0013] A further improvement of the technical solution of the present utility model lies in that: mounting holes are arranged at the web of the U-shaped plate, and the hanging plate connection part is connected to the fitting by bolts passing through the first mounting holes and the grading shielding ring mounting holes on the fitting.

[0014] A further improvement of the technical solution of the present utility model lies in that: second mounting holes are symmetrically arranged on the wing plates of the U-shaped plate.

[0015] A further improvement of the technical solution of the present utility model lies in that: the U-shaped plate is a 10-mm steel plate.

[0016] A further improvement of the technical solution of the present utility model lies in that: the support part includes two horizontally arranged cross arms and four obliquely arranged arms that slope upward; one end of the oblique arm is fixedly connected to the cross arm, and the other end is fixedly connected to the hanging plate connection part.

[0017] A further improvement of the technical solution of the present utility model lies in that: third mounting holes are respectively arranged at the two end points of the two cross arms, and fourth mounting holes are respectively arranged inside the two end points of the two cross arms; fifth mounting holes are respectively arranged at the end points of the four oblique arms; the lower end of the oblique arm is fixedly connected to the cross arm by bolts passing through the fourth mounting holes and the fifth mounting holes, and the upper end of the oblique arm is fixedly connected to the hanging plate connection part by bolts passing through the second mounting holes and the fifth mounting holes.

[0018] A further improvement of the technical solution of the present utility model lies in that: the pulling part includes a lead screw, a flange nut arranged at the top of the lead screw, and an upper lead screw nut seat arranged on the upper section of the lead screw; an upper lead screw nut is arranged at the center of the upper lead screw nut seat, and the upper lead screw nut is coupled with the lead screw.

[0019] A further improvement of the technical solution of the present utility model lies in that: sixth mounting holes are horizontally arranged at both ends of the upper lead screw nut seat, and the upper lead screw nut seat is fixedly connected to the support part by bolts passing through the third mounting holes and the sixth mounting holes and bolts passing through the fifth mounting holes, the fourth mounting holes, and the sixth mounting holes; the flange nut is fixedly connected to the lead screw.

[0020] The further improvement of the technical solution of the present utility model lies in that: the steel pipe connection part includes a U-shaped seat, a thrust bearing, a lower lead screw nut and a U-shaped clamp; the lower lead screw nut is fixedly connected to the lead screw and moves together with the lead screw; the lower lead screw nut is installed in the U-shaped seat through a thrust bearing; the U-shaped clamp is inserted into both ends of the U-shaped seat and fixedly supports the steel pipe after being fastened by bolts.

[0021] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model is as follows:

[0022] 1. All components of the replacement tool for jumper fittings of transmission lines in the present utility model are connected by bolts, realizing stable and reliable connection.

[0023] 2. By setting the support part in the present utility model, the replacement tool for jumper fittings of transmission lines is made integral, ensuring balanced pulling on both sides of the steel pipe when replacing the fittings and ensuring the balance of the overall mechanism's force.

[0024] 3. The jumper fittings of transmission lines in the present utility model are light in weight, and at the same time are of a combined type, can be disassembled, are small in size and convenient to carry. Description of the Drawings

[0025] Figure 1 is a schematic diagram of the use of the replacement tool for jumper fittings of transmission lines in the present utility model;

[0026] Figure 2 is a schematic diagram of the hanging plate connection part in the present utility model;

[0027] Figure 3 is a schematic diagram of the support part in the present utility model;

[0028] Figure 4 is a schematic diagram of the pulling part in the present utility model;

[0029] Figure 5 is a schematic diagram of the steel pipe connection part in the present utility model;

[0030] Among them, 1. Hanging plate connection part, 101. First mounting hole, 102. Second mounting hole;

[0031] 2. Fittings;

[0032] 3. Steel pipe connection part, 301. U-shaped seat, 302. Thrust bearing, 303. Lower lead screw nut, 304. U-shaped clamp;

[0033] 4. Support part, 401. Connecting bolt, 402. Inclined arm, 403. Cross arm;

[0034] 5. Pulling part, 501. Flange nut, 502. Upper lead screw nut seat, 503. Lead screw, 504. Upper lead screw nut;

[0035] 6. Steel pipe. Detailed implementation mode

[0036] The following further describes the present utility model in detail with reference to the accompanying drawings and embodiments:

[0037] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model.

[0038] In addition, terms such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "several" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0039] As Figure 1 shown, the jumper fitting replacement tool for the transmission line includes a support part 4, a hanger connection part 1 connected to the support part 4, pulling parts 5 arranged at both ends of the support part 4, and a steel pipe connection part 3 connected to the ends of the pulling parts 5; the hanger connection part 1 is connected to the fitting 2, and the steel pipe connection part 3 is connected to the steel pipe 6.

[0040] As Figure 2 shown, the hanger connection part 1 includes two U-shaped plates. Mounting holes 101 are arranged at the webs of the U-shaped plates. The two U-shaped plates are arranged on both sides of the fitting 2, and the hanger connection part 1 is connected to the fitting through bolts passing through the first mounting holes 101 and the grading shielding ring mounting holes on the fitting 2; second mounting holes 102 are symmetrically arranged on the wing plates of the U-shaped plates; the U-shaped plates are 10-mm steel plates.

[0041] As Figure 3As shown, the support part 4 includes two horizontally arranged cross arms 403 and four obliquely arranged arms 402 that slope upward; one end of each of the obliquely arranged arms 402 is fixedly connected to the cross arm 403, and the other end is fixedly connected to the hanging plate connecting part 1; third mounting holes are respectively arranged at the two end points of the two cross arms 403, and fourth mounting holes are respectively arranged inside the two end points of the two cross arms 403; fifth mounting holes are respectively arranged at the end points of the four obliquely arranged arms 402; the lower ends of the obliquely arranged arms 402 are fixedly connected to the cross arm 403 by bolts passing through the fourth mounting holes and the fifth mounting holes, and the upper ends of the obliquely arranged arms 402 are fixedly connected to the hanging plate connecting part 1 by bolts passing through the second mounting holes 102 and the fifth mounting holes. The support part 4 plays a role in supporting, connecting, and transmitting force to other parts.

[0042] As Figure 4 shown, the pulling part 5 includes a lead screw 503, a flange nut 501 arranged at the top end of the lead screw 503, and an upper lead screw nut seat 502 arranged on the upper section of the lead screw 503; an upper lead screw nut 504 is arranged at the center of the upper lead screw nut seat 502, and the upper lead screw nut 504 is coupled with the lead screw 503, and the lead screw 503 can move up and down when rotating therein; sixth mounting holes are horizontally arranged at both ends of the upper lead screw nut seat 502, and the upper lead screw nut seat 502 is fixedly connected to the support part 4 by bolts passing through the third mounting holes and the sixth mounting holes and bolts passing through the fifth mounting holes, the fourth mounting holes, and the sixth mounting holes; the flange nut 501 is fixedly connected to the lead screw 503.

[0043] As Figure 5 shown, the steel pipe connecting part 3 includes a U-shaped clamping seat 301, a thrust bearing 302, a lower lead screw nut 303, and a U-shaped clamp 304; the lower lead screw nut 303 is fixedly connected to the lead screw 503 and moves together with the lead screw 503; the lower lead screw nut 303 is installed in the U-shaped clamping seat 301 through the thrust bearing 302; the U-shaped clamp 4 is inserted into both ends of the U-shaped clamping seat 301 and fixedly supports the steel pipe 6 after being fastened by bolts.

[0044] Usage method:

[0045] S1. Install the hanging plate connecting part 1 to the bowl head hanging plate (fitting 2) with bolts;

[0046] S2. Connect the four obliquely arranged arms 402 to the hanging plate connecting part 1 with bolts;

[0047] S3. Fix the upper lead screw nut seat 502 on the cross arm 403 with bolts;

[0048] S4. Fix the cross arm 403 on the obliquely arranged arm 402 with bolts;

[0049] S5. After assembly, adjust the lead screw 503 to bring the U-shaped clamping seat 301 close to the steel pipe 6;

[0050] S6. Fix the steel pipe 6 on the U-shaped seat 301 through the U-shaped clamp 304;

[0051] S7. Use a wrench to turn the flange nut 501 at the top of the lead screw to lift the lower steel pipe 6;

[0052] S8. At this time, the replacement operation of the fitting 2 can be carried out.

[0053] In summary, the utility model realizes reliable connection during the replacement of the fitting, ensures the straightness of the steel pipe during the fitting replacement process, and facilitates the operation of the replacement personnel.

Claims

1. A power transmission line jumper fitting replacement tool, characterized in that: It comprises a support portion (4), a hanging plate connecting portion (1) connected to the support portion (4), a pulling portion (5) arranged at both ends of the support portion (4), and a steel pipe connecting portion (3) connected to the end of the pulling portion (5); the hanging plate connecting portion (1) is connected to a hardware (2), and the steel pipe connecting portion (3) is connected to a steel pipe (6).

2. The power transmission line jumper fitting replacement tool according to claim 1, characterized in that: The hanging plate connecting portion (1) comprises two U-shaped plates arranged on both sides of the hardware (2).

3. The power transmission line jumper fitting replacement tool according to claim 2, characterized in that: The U-shaped plate web is provided with a mounting hole (101), and the hanging plate connecting portion (1) is connected to the hardware by means of bolts passing through the first mounting hole (101) and the pressure equalizing shielding ring mounting hole on the hardware (2).

4. The power transmission line jumper fitting replacement tool according to claim 2, characterized in that: Second mounting holes (102) are symmetrically arranged on the U-shaped plate wing.

5. The power transmission line jumper fitting replacement tool according to claim 2, characterized in that: The U-shaped plate is a 10 mm steel plate.

6. The power transmission line jumper fitting replacement tool according to claim 4, characterized in that: The support portion (4) comprises two horizontal arms (403) arranged in parallel and four oblique arms (402) arranged to be inclined upward; one end of the oblique arm (402) is fixedly connected to the horizontal arm (403), and the other end is fixedly connected to the hanging plate connecting portion (1).

7. The power transmission line jumper fitting replacement tool according to claim 6, characterized in that: A third mounting hole is respectively arranged at both end points of the two horizontal arms (403), and a fourth mounting hole is respectively arranged on the inner sides of both end points of the two horizontal arms (403); a fifth mounting hole is respectively arranged at the end points of the four oblique arms (402); the lower end of the oblique arm (402) is fixedly connected to the horizontal arm (403) by means of a bolt passing through the fourth mounting hole and the fifth mounting hole, and the upper end of the oblique arm (402) is fixedly connected to the hanging plate connecting portion (1) by means of a bolt passing through the second mounting hole (102) and the fifth mounting hole.

8. The power transmission line jumper fitting replacement tool according to claim 7, characterized in that: The pulling portion (5) comprises a lead screw (503), a flange nut (501) arranged at the top end of the lead screw (503), and an upper lead screw nut seat (502) arranged at the upper section of the lead screw (503); an upper lead screw nut (504) is arranged at the center of the upper lead screw nut seat (502), and the upper lead screw nut (504) is coupled to the lead screw (503).

9. The power transmission line jumper fitting replacement tool according to claim 8, characterized in that: Sixth mounting holes are transversely arranged at both ends of the upper screw nut seat (502); the upper screw nut seat (502) is fixedly connected to the support portion (4) by bolts passing through the third mounting hole and the sixth mounting hole and bolts passing through the fifth mounting hole, the fourth mounting hole and the sixth mounting hole respectively; the flange nut (501) is fixedly connected to the screw (503).

10. The power transmission line jumper fitting replacement tool according to claim 8, characterized in that: The steel pipe connecting portion (3) comprises a U-shaped clamping seat (301), a thrust bearing (302), a lower lead screw nut (303) and a U-shaped clamp (304); the lower lead screw nut (303) is fixedly connected to the lead screw (503) and moves with the lead screw (503); the lower lead screw nut (303) is installed in the U-shaped clamping seat (301) through the thrust bearing (302); the U-shaped clamp (4) is inserted into both ends of the U-shaped clamping seat (301) and fixedly supports the steel pipe (6) after being fastened by bolts.

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