CN211867696U - Special tool for fastening 110kV wiring board bolt in electrified manner - Google Patents

Abstract

The utility model belongs to the technical field of power grid auxiliary equipment, and relates to a special tool for lively tightening bolts of 110kV terminal blocks. The tool includes a main insulating rod, a connecting head, a tightening part and a fixing part; the top end of the main insulating rod is provided with an external thread and is threadedly connected with the tightening part, and the bottom end is provided with an external thread and is threadedly connected with the connecting head; the connecting head The bottom end is provided with an internal thread; the tightening part includes a vertical direction tightening mechanism or a horizontal direction tightening mechanism; the fixing part includes a vertical direction fixing mechanism or a horizontal direction fixing mechanism; the vertical direction tightening mechanism and the vertical direction fixing mechanism The mechanism is used together, and the horizontal tightening mechanism is used in conjunction with the horizontal fixing mechanism. The tool can not only fasten the bolts of the terminal board with electricity to ensure the safety of the power grid, equipment and staff, but also has a good fastening effect, eliminate the critical defects of the equipment in time, prevent problems before they occur, and ensure the safe and stable operation of the equipment in the station.

Description

110kV terminal block bolt live tightening special tool

technical field

The utility model belongs to the technical field of power grid auxiliary equipment, and relates to a special tool for lively tightening bolts of 110kV terminal blocks.

Background technique

In the power grid industry, the bolts of the equipment clamps in the substation are often loosened due to surface oxidation, external traction, and loose crimping, resulting in heat at the connection of the clamps. The equipment will be damaged by heat, which will endanger the safe operation of the power grid; especially when the critical defect is at night, emergency repairs must be carried out at night, and the work risk of the operators will increase sharply. Therefore, it is often necessary to carry out live tightening of the terminal board bolts in the early stage of heating of the equipment clip to solve the problem in time, so as to avoid the serious deterioration of the heating and the damage to the equipment, and at the same time reduce the number of power outages.

Commonly used fastening methods include single insulating rod fixed type and single insulating rod combined with direction changing gear set. Among them, the working process of the single insulating rod fixed type is to use a single insulating rod and a sleeve joint to fix one end of the screw and tighten it with a wrench; the device is simple in structure and fast in implementation, but during use, because only one end of the single insulating rod is tightened If the bolt is fastened, it cannot be tightened when the nut rotates; in addition, the bolts that are placed horizontally need to be placed at the same height, which increases the difficulty and danger of on-site use. The combined working process of the single insulating rod and the changing gear set is to use the single insulating rod and one end of the fixing screw of the changing gear set to rotate the driving wheel to drive the driven wheel to fasten the screw; the device can change the tightening direction, the operation is labor-saving, and the The fixing effect is good, but since the gear set can only fix the screws at one end, that is, only the vertical bolts can be tightened, when the nut and the screw rotate together, the rotation of the gear set cannot be tightened; in addition, the device structure Complicated, there are defects such as gear jamming that cannot be removed, difficult processing, and high cost, which limit its further use and promotion.

Utility model content

The purpose of the utility model is to provide a special tool for energized fastening of bolts of a 110kV terminal block, which has good fastening effect, can be disassembled, and is simple and flexible to operate.

The technical solutions of the present invention to solve the above technical problems are as follows.

A special tool for energized fastening of 110kV terminal block bolts, comprising a main insulating rod, a connecting head, a tightening part, and a fixing part; the top of the main insulating rod is provided with an external thread and is threadedly connected with the tightening part, and the bottom end is provided with an external thread and is threadedly connected with the connector; the bottom end of the connector is provided with an internal thread; the tightening part includes a vertical direction tightening mechanism or a horizontal direction tightening mechanism; the fixing part includes a vertical direction fixing mechanism or a horizontal direction fixing mechanism; The direction tightening mechanism is matched with the vertical direction fixing mechanism, and the horizontal direction tightening mechanism is matched with the horizontal direction fixing mechanism. By setting the tightening part and the fixing part at the same time, the bolt is fixed by the fixing part when tightening, and the tightening effect is better; at the same time, the horizontal and vertical direction of the tightening device is set to deal with different use occasions .

Further, the vertical direction tightening mechanism is integrally processed, including a socket joint, a limit rod, and a vertical screw connection column; the socket joint is a solid cylinder, and its bottom end is provided with an internal thread, and the limit rod It is fixed on the side wall of the socket joint, and the connecting column is vertically screwed and fixed on the top of the socket joint; the vertical direction fixing mechanism includes a vertical fixing socket, a connecting rod, and a vertical fixing connecting column; the structure of the vertical fixing socket It is a hollow cylindrical structure, and its side wall is provided with a right-angle broken line-shaped through groove, one end of the connecting rod is fixed on the side wall of the vertical fixing sleeve, and the other end is connected with a vertical fixing connecting column; the main insulation The outer diameter of the rod is smaller than the inner diameter of the vertical fixing sleeve, the sleeve joint is connected with the top of the main insulating rod through threads, and can pass through the interior of the vertical fixing sleeve integrally with the main insulating rod, and the limit rod can pass through the vertical fixing sleeve. The broken-line through groove of the straight fixing sleeve is arranged on a coaxial line with the vertical screwing connecting column and the vertical fixing connecting column. By adopting the above technical solution, the fastening in the vertical direction is realized through the coaxial cooperation between the screwing in the vertical direction and the fixing device, and the fastening effect is better.

Further, the horizontal tightening mechanism includes a horizontal tightening sleeve, a pulling rod, a ratchet, and a horizontal tightening connecting column; the horizontal tightening sleeve is a hollow cylindrical structure, and its bottom end is provided with an inner thread, and the side wall is provided with an opening. There is a straight through groove parallel to its axis, and one end of the pulling rod is located inside the horizontal tightening sleeve, and is movably connected with the horizontal tightening sleeve through the connecting rod, and its rod body can be embedded in the straight through groove, and the pull rod can be inserted into the straight through groove. The other end is a hollow ring structure, and a ratchet wheel is arranged inside the ratchet wheel. The horizontal tightening connecting column is arranged inside the ratchet wheel; the horizontal tightening sleeve is threadedly connected with the top end of the main insulating rod. Further, the horizontal fixing mechanism includes a secondary insulating rod, a horizontal fixing sleeve, a fixing rod, and a horizontal fixing connecting column; the horizontal fixing sleeve is sleeved on the top of the secondary insulating rod and connected by threads, and one end of the fixing rod is fixed to the horizontal. The side wall of the fixed sleeve and the other end are connected with a horizontal fixed connection column. Fastening in the horizontal direction is achieved through the cooperation between the tightening in the horizontal direction and the fixing device, and the fastening effect is better.

Further, the vertical screw connection column, the vertical fixed connection column, the horizontal screw connection column, and the horizontal fixed connection column are all square joint connection columns; it is convenient to directly fit universal socket heads of different sizes.

Further, the length of the main insulating rod is 2-2.5m, and the diameter is 35-40cm; the main insulating rod is made of glass fiber reinforced plastic epoxy resin, and an insulating sheath is added on the rod body; the secondary insulating rod is made of glass fiber reinforced plastic epoxy resin. It is made of resin, and the rod body is provided with an insulating sheath; thus, the insulating effect of the insulating rod is enhanced to ensure the safety of the tool.

The beneficial effects of the utility model 110kV terminal block bolt live tightening special tool are:

(1) Effectively solve safety accidents such as heating at the connection caused by loose bolts caused by loose compaction, surface oxidation, external force traction and other factors of equipment wire clamps in substations;

(2) On-site operators can directly loosen bolts on live equipment without power failure, which effectively reduces the difficulty of emergency repair operations, avoids equipment power outages and the time limit of maintenance plans, and reduces equipment outages in substations It improves the safe and stable operation rate of equipment in the station, improves the maintenance effect of the substation monitoring system, and ensures the reliability of regional power supply;

(3) The tightening effect is better through the cooperation between the tightening and tightening mechanisms and the setting of vertical and horizontal tightening devices, and the tool is compact in structure, small in volume, fast in assembly and disassembly, and Simple operation and flexible control, it is convenient for maintenance operators to carry, assemble, operate, transfer, etc. during operation, shorten the time for preparing various tools before work, and greatly improve the operation efficiency of daily emergency repairs and the quality of equipment maintenance;

(4) This tool can not only fasten the bolts of the terminal board with electricity to ensure the safety of the power grid, equipment and staff, but also has a good fastening effect, eliminate the critical defects of the equipment in time, prevent problems before they occur, and ensure the safety and stability of the equipment in the station. run.

Description of drawings

Fig. 1 is the structural representation of the vertical direction tightening mechanism of the present invention;

Fig. 2 is the structural schematic diagram of the vertical direction fixing mechanism of the present invention;

Fig. 3 and Fig. 4 are the structural representations of the horizontal direction tightening mechanism of the present invention;

Fig. 5 is the structural schematic diagram of the horizontal direction fixing mechanism of the present invention;

Figure 6 and Figure 7 are the use process diagrams of the vertical direction fastening of the present utility model;

FIG. 8 is a partial enlarged view of part A in FIG. 6 .

The codes in the accompanying drawings are: main insulating rod 1, connecting head 2, vertical direction tightening mechanism 3, socket joint 3-1, limit rod 3-2, vertical tightening connecting column 3-3, horizontal direction Tightening mechanism 4, horizontal tightening sleeve 4-1, pulling rod 4-2, ratchet 4-3, horizontal tightening connecting column 4-4, vertical direction fixing mechanism 5, vertical fixing sleeve 5-1, A connecting rod 5-2, a vertical fixing connecting column 5-3, a horizontal fixing mechanism 6, a secondary insulating rod 6-1, a horizontal fixing sleeve 6-2, a fixing rod 6-3, and a horizontal fixing connecting column 6-4.

Detailed ways

A special tool for energized fastening of 110kV terminal block bolts, including a main insulating rod 1, a connector 2, a tightening part, and a fixing part; It includes a vertical direction fixing mechanism 5 or a horizontal direction fixing mechanism 6 .

The top end of the main insulating rod 1 is provided with an external thread and is threadedly connected with the tightening part, the bottom end is provided with an external thread and is threadedly connected with the connector 2, and the bottom end of the connector 2 is provided with an internal thread for installing a torque wrench, etc. ; The main insulating rod 1 is made of FRP epoxy resin, and the rod body is equipped with an insulating sheath; the length of the main insulating rod 1 is 2m and the diameter is 35cm.

The vertical direction tightening mechanism 3 is used together with the vertical direction fixing mechanism 5 .

As shown in FIG. 1 , the vertical direction tightening mechanism 3 is integrally processed, including a socket joint 3-1, a limit rod 3-2, and a vertical tightening connecting column 3-3; the socket joint 3-1 is The solid cylinder is provided with an inner thread at the bottom end, the limit rod 3-2 is fixed on the side wall of the socket joint 3-1, and the vertical screw connection column 3-3 is a square joint connection column, and is fixed on the socket Top of connector 3-1.

As shown in FIG. 2, the vertical direction fixing mechanism 5 includes a vertical fixing sleeve 5-1, a connecting rod 5-2, and a vertical fixing connecting column 5-3; the structure of the vertical fixing sleeve 5-1 is a hollow cylinder The sidewall of the connecting rod 5-2 is fixed on the sidewall of the vertical fixing sleeve 5-1, and the other end is connected with a vertical fixing connecting column. 5-3, the vertical fixed connection column 5-3 is a square joint connection column; the outer diameter of the main insulating rod 1 is smaller than the inner diameter of the vertical fixed sleeve 5-1, and the sleeve joint 3-1 is connected to the top of the main insulating rod 1 Through threaded connection and can pass through the interior of the vertical fixing sleeve 5-1 integrally with the main insulating rod 1, the limit rod 3-2 can pass through the broken line-shaped through groove of the vertical fixing sleeve 5-1, and the vertical The screwing connection post 3-3 and the vertical fixed connection post 5-3 are arranged coaxially.

The horizontal direction tightening mechanism 4 is used together with the horizontal direction fixing mechanism 6 .

As shown in Figures 3 and 4, the horizontal tightening mechanism 4 includes a horizontal tightening sleeve 4-1, a pulling rod 4-2, a ratchet 4-3, and a horizontal tightening connecting column 4-4; 4-1 is a hollow cylindrical structure, and its bottom end is provided with an internal thread, the side wall is provided with a straight through groove parallel to its axis, and one end of the pulling rod 4-2 is located inside the horizontal tightening sleeve 4-1. , and the connecting rod is movably connected with the horizontal tightening sleeve 4-1, and its rod body can be embedded in a straight through groove, the other end of the pulling rod 4-2 is a hollow ring structure, and a ratchet wheel 4-3 is arranged inside it. , the horizontal tightening connecting column 4-4 is a square joint connecting column, and is arranged inside the ratchet 4-3; the horizontal tightening sleeve 4-1 is threadedly connected with the top of the main insulating rod 1.

As shown in FIG. 5 , the horizontal fixing mechanism 6 includes a secondary insulating rod 6-1, a horizontal fixing sleeve 6-2, a fixing rod 6-3, and a horizontal fixing connecting column 6-4; the secondary insulating rod 6-1 is composed of a glass fiber reinforced plastic ring It is processed from oxygen resin, and the rod body is equipped with an insulating sheath. The horizontal fixing sleeve 6-2 is sleeved on the top of the secondary insulating rod 6-1 and connected by threads. One end of the fixing rod 6-3 is fixed on the horizontal A horizontal fixed connecting column 6-4 is connected to the side wall and the other end of the fixed sleeve 6-2, and the horizontal fixed connecting column 6-4 is a square joint connecting column.

The utility model is a special tool for energized fastening of 110kV terminal block bolts, and the main insulating rod 1 selects the 110kV insulating operating rod used by the operation and maintenance personnel daily. The safety distance when the equipment is not powered off - 110kV is not less than 1.5 meters, and according to the installation drawings of 110kV and below equipment, the basic installation height is 2.5 meters, plus the equipment body, the height range is 3 ~ 4.1 meters; During use, the main insulating rod 1 should also have high insulation and compressive strength to ensure the safety of people and equipment. While ensuring the mechanical strength, it should also be light, the weight should not be too large, and it is easy to hold; therefore, the length of the main insulating rod is designed. It is 2.0 meters, the diameter is designed to be 35 cm, and a warning line is set at the corresponding position. The material is FRP epoxy resin with good insulation performance, and an insulating sheath is installed; when in use, the warning line must not be crossed.

As shown in Figure 6, Figure 7 and Figure 8, the vertical direction fastening process of the present invention is as follows: the vertical fixing sleeve 5-1 of the vertical direction fixing mechanism 5 is sleeved on the outside of the main insulating rod 1 to achieve The vertical fixing sleeve 5-1 moves on the rod body of the main insulating rod 1, and the sleeve joint 3-1 of the vertical direction tightening mechanism 3 is screwed into the top of the main insulating rod 1, and the two universal square sleeves are respectively sleeved on. On the vertical tightening connecting column 3-3 and the vertical fixing connecting column 5-3, pass the limit rod 3-2 of the vertical tightening mechanism 3 through the broken-line through groove of the horizontal tightening sleeve 4-1 , and clamp it in the hole at the end of the fold-line through-slot. Finally, fit the torque wrench or ratchet wrench to the inside of the connector 2; in actual use, fit the universal square socket on the vertical fixing column 5-3. On the nut, turn and push the main insulating rod 1, so that the limit rod 3-2 passes through the folded-line through groove and is separated from the position limit of the vertical fixing sleeve 5-1. By continuously pushing the main insulating rod 1 and the vertical The coaxial arrangement of the straight tightening connecting column 3-3 and the vertical fixing connecting column 5-3 makes the universal square socket head located on the vertical tightening connecting column 3-3 fit on the head of the bolt, and by turning the torque wrench or The ratchet wrench drives the rotation of the main insulating rod 1 and the socket joint 3-1, and then tightens the bolts; while tightening, the universal square socket head located on the vertical fixed connection column 5-3 fixes the bolts, and then To achieve better tightening effect.

The horizontal tightening process of the present invention is as follows: the horizontal tightening sleeve 4-1 of the horizontal tightening mechanism 4 is sleeved on the main insulating rod 1 through threads, and the horizontal fixing sleeve 6-1 of the horizontal fixing mechanism 6 is threaded 2. Set it on the secondary insulating rod 2 through the thread, and then set the two universal square socket heads on the horizontal screw connection column 4-4 and the horizontal fixed connection column 6-4 respectively; in actual use, first use the horizontal fixed connection column. The universal square socket head on 6-4 fixes the nut, and then sets the universal square socket head on the horizontally tightened connecting column 4-4 on the head of the bolt, and pulls the main insulating rod 1, so that the pulling rod 4-2 is horizontal. The tightening sleeve 4-1 rotates in and out of the straight through groove, thereby driving the ratchet 4-3 to rotate and tightening the bolt; while tightening, it is located on the horizontal fixed connecting column 6-4 The universal square socket head is used to fix the bolts, so as to achieve a better tightening effect.

The tightening tool enables maintenance personnel to easily solve the heating defect caused by the loose connection board bolts in the substation, and the accident maintenance completion rate is 100%.

Claims (9)

1. A special tool for fastening a 110kV wiring board bolt in an electrified way is characterized by comprising a main insulating rod (1), a connector (2), a screwing component and a fixing component;

the top end of the main insulating rod (1) is provided with an external thread and is in threaded connection with the screwing component, and the bottom end of the main insulating rod is provided with an external thread and is in threaded connection with the connector (2); the bottom end of the connector (2) is provided with an internal thread;

the screwing component comprises a screwing mechanism (3) in the vertical direction or a screwing mechanism (4) in the horizontal direction;

the fixing part comprises a vertical fixing mechanism (5) or a horizontal fixing mechanism (6);

the vertical direction screwing mechanism (3) is matched with the vertical direction fixing mechanism (5) for use, and the horizontal direction screwing mechanism (4) is matched with the horizontal direction fixing mechanism (6) for use.

2. The special tool for electrified fastening of 110kV wiring board bolts as claimed in claim 1, wherein the vertical screwing mechanism (3) is integrally processed and comprises a socket joint (3-1), a limiting rod (3-2) and a vertical screwing connecting column (3-3); the sleeve joint (3-1) is a solid cylinder, an internal thread is arranged at the bottom end of the sleeve joint, the limiting rod (3-2) is fixed on the side wall of the sleeve joint (3-1), and the vertical screwing connecting column (3-3) is fixed at the top end of the sleeve joint (3-1);

the vertical direction fixing mechanism (5) comprises a vertical fixing sleeve barrel (5-1), a connecting rod (5-2) and a vertical fixing connecting column (5-3); the vertical fixing sleeve barrel (5-1) is of a hollow cylindrical structure, a right-angle fold-line-shaped through groove is formed in the side wall of the vertical fixing sleeve barrel, one end of the connecting rod (5-2) is fixed to the side wall of the vertical fixing sleeve barrel (5-1), and the other end of the connecting rod is connected with a vertical fixing connecting column (5-3);

the outer diameter of the rod body of main insulator spindle (1) is less than the internal diameter of a vertical fixed sleeving section of thick bamboo (5-1), the top of cup joint (3-1) and main insulator spindle (1) passes through threaded connection, and can pass the inside of a vertical fixed sleeving section of thick bamboo (5-1) with main insulator spindle (1) an organic whole, broken line shape that a vertical fixed sleeving section of thick bamboo (5-1) is passed through to gag lever post (3-2), vertical spliced pole (3-3) of screwing is the coaxial line setting with vertical fixed spliced pole (5-3).

3. The special tool for electrified fastening of 110kV wiring board bolts as claimed in claim 1, wherein the horizontal screwing mechanism (4) comprises a horizontal screwing sleeve (4-1), a pulling rod (4-2), a ratchet wheel (4-3) and a horizontal screwing connecting column (4-4);

the horizontal screwing sleeving barrel (4-1) is of a hollow cylindrical structure, the bottom end of the horizontal screwing sleeving barrel is provided with an internal thread, a straight through groove parallel to the axis of the horizontal screwing sleeving barrel is formed in the side wall of the horizontal screwing sleeving barrel, one end of the pulling rod (4-2) is located inside the horizontal screwing sleeving barrel (4-1) and movably connected with the horizontal screwing sleeving barrel (4-1) through a connecting rod, a rod body of the pulling rod can be embedded into the straight through groove, the other end of the pulling rod (4-2) is of a hollow ring structure, a ratchet wheel (4-3) is arranged inside the pulling rod, and the horizontal screwing connecting column (4-4) is arranged inside the ratchet wheel (4-3);

the horizontal screwing sleeving cylinder (4-1) is in threaded connection with the top end of the main insulating rod (1).

4. A tool special for the electrified fastening of 110kV wiring board bolt according to claim 3, characterized in that the horizontal direction fixing mechanism (6) comprises a secondary insulating rod (6-1), a horizontal fixing sleeve barrel (6-2), a fixing rod (6-3) and a horizontal fixing connecting column (6-4);

the horizontal fixing sleeve barrel (6-2) is sleeved at the top end of the secondary insulating rod (6-1) and is connected with the secondary insulating rod through threads, one end of the fixing rod (6-3) is fixed on the side wall of the horizontal fixing sleeve barrel (6-2), and the other end of the fixing rod is connected with a horizontal fixing connecting column (6-4).

5. The special tool for electrified fastening of 110kV wiring board bolts as claimed in claim 2, wherein the vertical screwing connecting column (3-3) and the vertical fixing connecting column (5-3) are all square joint connecting columns.

6. The special tool for electrified fastening of 110kV wiring board bolts as claimed in claim 4, wherein the horizontal screwing connection column (4-4) and the horizontal fixing connection column (6-4) are all square joint connection columns.

7. A tool special for the electrified fastening of 110kV wiring board bolts as claimed in any one of claims 1 to 6, wherein the main insulating rod (1) has a length of 2-2.5 m and a diameter of 35-40 cm.

8. The special tool for electrified fastening of 110kV wiring board bolts as claimed in claim 7, wherein the main insulating rod (1) is made of glass fiber reinforced plastic epoxy resin, and an insulating sheath is added on the rod body.

9. The special tool for electrified fastening of 110kV wiring board bolts as claimed in claim 4 or 6, wherein the secondary insulating rod (6-1) is made of glass fiber reinforced plastic epoxy resin, and an insulating sheath is added on the rod body.

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