CN209929849U - Tool for live replacement of insulator of ultrahigh-voltage large-span tangent tower - Google Patents

Abstract

A tool for replacing insulators with an ultra-high voltage and large distance linear tower, including a cross-arm card and a wire lifter, the cross-arm card includes a first wedge-shaped block and a second wedge-shaped block, and the upper end of the first wedge-shaped block is provided with a concave The upper end of the second wedge-shaped block is provided with a convex block matched with the groove, a through hole is arranged in the groove and the convex block, a bolt is arranged in the through hole, and one end of the bolt extending out of the through hole is fitted with a screw. A cap, a concave slot is provided at the connection position of the bottom end of the first wedge block and the second wedge block, and the matching degree of the adjusting bolt and the nut can adjust the width and distance of the concave slot, which is consistent with the existing tools. It can more reasonably utilize the characteristics of the back-to-back angle iron of the cross-arm head in the direction of the line, in which the cross-arm clip is fixed on the cross-arm, so that the lead screw can be subjected to vertical force during the whole process of lifting the wire, avoiding oblique lifting and improving. The work efficiency is improved, and the wire lifters on both sides can protect each other's backs, which greatly improves the safety during the operation.

Description

A tool for live replacement of insulators for ultra-high voltage and large-spacing linear towers

technical field

The utility model relates to the technical field of insulator replacement appliances, in particular to a tool for live replacement of insulators for ultra-high voltage and large-gap linear towers.

Background technique

Ultra/UHV transmission lines are the backbone of my country's power grid, but in long-term operation, insulators and fittings are bound to age and deteriorate under the action of long-term high-voltage loads and comprehensive mechanical stress. If they are not replaced in time, they will directly affect power transmission. The safe and stable operation of the line may even lead to a vicious accident in the power grid. The terrain of the transmission corridor of ultra-high voltage lines is complicated. When replacing insulators with live hoisting wires with large distances in mountainous areas, only the hydraulic screw double hoisting point lifting method can be used, but there is often no suitable hoisting point at the head of the iron tower. The point hoisting method is very easy to cause deformation of the angle iron at the hoisting point of the cross arm during the hoisting process, which seriously affects the work safety. In addition, the tools and tools of this method are generally cumbersome, and the installation and disassembly are more complicated, which greatly consumes the physical strength of the operators. , which brings trouble to the replacement of insulators.

SUMMARY OF THE INVENTION

In order to solve the above problems, the purpose of the present utility model is to provide a tool for replacing the insulators of an ultra-high-voltage large-gauge linear tower with electricity, which can reduce the risks in the operation process while improving the work efficiency.

The technical solution adopted by the utility model to solve the technical problem is as follows: the utility model is a tool for replacing the insulators of an ultra-high-voltage large-gap linear tower with electricity, including a cross-arm card and a wire lifter, and the cross-arm card It includes a first wedge-shaped block and a second wedge-shaped block, the upper end of the first wedge-shaped block is provided with a groove, the upper end of the second wedge-shaped block is provided with a convex block matched with the groove, and the groove and the convex block are provided with a through hole. There is a bolt in the through hole, and a nut is installed at one end of the bolt extending out of the through hole, and a concave slot is arranged at the connection position of the bottom end of the first wedge block and the second wedge block. The matching degree of the cap can adjust the width and distance of the concave card slot. Mounting holes are vertically opened on both sides of the concave card slot, one of which is located on the first wedge-shaped block, and the other is located on the second. On the wedge-shaped block, each installation hole is provided with a wire lifter, each wire lifter includes a mechanical lead screw, the mechanical lead screw is located in the installation hole, and an insulating rod is hinged at the bottom end of the mechanical lead screw The bottom end of the insulating rod is hinged with a hydraulic lead screw, the bottom end of the hydraulic lead screw is hinged with a thread lifter, and the thread lifter is provided with a hook. Further, the thread lifting rod includes a first thread lifting rod, the bottom end of the first thread lifting rod is fixedly connected to the second thread lifting rod by means of screws, the first thread lifting rod is provided with a first hook, and the second thread lifting rod is provided with a first hook. A second hook is arranged on the wire rod. Further, the surface of the concave card slot is provided with an anti-skid surface. Further, the mechanical lead screw and the insulating rod, the insulating rod and the hydraulic lead screw, and the hydraulic lead screw and the thread lifter are all connected by detachable bolt fasteners. Further, the hook includes an arc-shaped support rod, one end of the arc-shaped support rod is fixedly connected to the thread lifting rod, and the other end of the arc-shaped support rod is hinged with a rotating rod through the first rotating shaft, corresponding to the top position of the rotating rod. , There is also a stop lever on the thread lift rod that can be in contact with it, a first torsion spring is coaxially installed on the first rotating shaft, and the first torsion spring always has a tendency to press the rotating rod to the stop rod and contact it. . Further, the wire lifting rod includes two sets of wire lifting and clamping devices arranged up and down, and the wire lifting and clamping devices each include a sliding sleeve. The sliding sleeve is located on the wire lifting rod and can slide up and down along the wire lifting rod. The hook is fixedly installed on the thread lifting rod, and the thread lifting rod between the hook and the sliding sleeve is provided with a toggle block. Corresponding to the position of the toggle block, a positioning and avoiding groove is opened in the sliding sleeve. Mounting plates are arranged horizontally on both sides, an L-shaped blocking plate is installed between the mounting plates through the second rotating shaft, a positioning block is fixedly installed on the upper side of the two mounting plates, and a second torsion spring is coaxially installed on the second rotating shaft. The second torsion spring always has a tendency to press the L-shaped blocking plate to the positioning block. When the sliding sleeve descends and the toggle block is located in the positioning and avoiding groove, it can push the L-shaped blocking plate to rotate and cooperate with the hook to close. The sliding sleeve is also provided with a locking device matched with the thread lifting rod. The locking device includes a positioning insert block. The thread lifting rod is provided with a positioning socket matched with the positioning insert block, corresponding to the positioning insert block. , a horizontal sliding hole is opened in the sliding sleeve, and a sliding block is arranged in the sliding hole. One end of the sliding block is connected to the positioning insert block through a connecting rod, and the other end of the sliding block is installed with a pulling handle. The annular plate is fixedly installed on the inner circumference of the sliding hole at the connection position with the sliding block, and a spring is installed between the annular plate and the positioning plug. The spring is located on the outer circumference of the connecting rod and always has a tendency to make the positioning plug enter the positioning socket. , the pulling handles between the two wire lifting and clamping devices are fixedly connected, so as to facilitate the linkage of the two wire lifting and clamping devices.

The positive effect of the present utility model is: compared with the existing tool, the utility model can utilize the back-to-back angle of the cross-arm head along the line direction more rationally. The characteristics of iron, in which the cross-arm clip is fixed on the cross-arm, so that the lead screw can be subjected to vertical force during the whole process of lifting the wire, avoiding oblique lifting, and improving the work efficiency, and the wire lifters on both sides can interact with each other. For the back protection, the safety during the operation is greatly improved. The distance between the first wedge-shaped block and the second wedge-shaped block can be adjusted so that the concave clamping groove can be adapted to different types of cross arms, and the applicability is more extensive. The various parts of the tools and appliances that make up the live replacement insulators of the ultra-high-voltage large-gap linear tower are connected by detachable bolt fasteners, which are convenient for disassembly, installation and transportation. The hook on the wire rod can adopt different structures to stably lift the wire, which not only improves the work efficiency, but also achieves the purpose of reducing the risk in the operation process.

Description of drawings

Fig. 1 is the structural representation of the present utility model;

Fig. 2 is the structural representation of the cross arm card of the present utility model;

Fig. 3 is the top view of Fig. 2;

4 is a schematic structural diagram of an embodiment of the thread lifter of the present invention;

Fig. 5 is a partial enlarged view of I in Fig. 4;

Fig. 6 is the A-direction view in Fig. 5;

7 is a schematic structural diagram of another embodiment of the thread lifter of the present invention;

Fig. 8 is the partial enlarged view of II in Fig. 7;

Figure 9 is an enlarged view of the top view of Figure 7;

FIG. 10 is a schematic diagram of the working state of the thread lift rod shown in FIG. 7 .

In the figure 1 first wedge block 2 second wedge block 3 groove 4 convex block 5 through hole 6 adjusting bolt 7 nut 8 concave slot 9 mounting hole 10 mechanical lead screw 11 insulating rod 12 hydraulic lead screw 13 first lift Thread rod 14 Second thread lifter 15 First hook 16 Second hook 17 Bolt fastener 18 Arc support rod 19 First shaft 20 Rotation rod 21 Block rod 22 First torsion spring 23 Sliding sleeve 24 Toggle block 25 Positioning Avoidance groove 26 Mounting plate 27 Second shaft 28 L-shaped blocking plate 29 Positioning block 30 Second torsion spring 31 Positioning plug 32 Positioning socket 33 Sliding hole 34 Sliding block 35 Connecting rod 36 Ring plate 37 Spring 38 Pulling the handle.

Detailed ways

The utility model is a tool for replacing insulators with an ultra-high voltage and large distance linear tower, as shown in FIG. 1, including a cross arm clip and a wire lifter, as shown in FIGS. The card includes a first wedge-shaped block 1 and a second wedge-shaped block 2. The upper end of the first wedge-shaped block 1 is provided with a groove 3, and the upper end of the second wedge-shaped block 2 is provided with a convex block 4 that matches the groove 3. The groove 3 A through hole 5 is arranged in the projection block 4 , a bolt 6 is arranged in the through hole 5 , and a nut 7 is fitted with a nut 7 at one end of the bolt 6 extending out of the through hole 5 . A concave clip groove 8 is provided at the connection position of the bottom ends of the first wedge-shaped block 1 and the second wedge-shaped block 2. Adjusting the degree of cooperation between the bolt 6 and the nut 7 can adjust the width and distance of the concave clip groove 8, so as to clamp It is fixed on different types of cross arms. Mounting holes 9 are vertically opened on both sides of the concave card slot 8, one mounting hole 9 is located on the first wedge-shaped block 1, and the other mounting hole 9 is located on the second wedge-shaped block 2. Each mounting hole 9 are provided with wire lifters, and each wire lifter includes a mechanical lead screw 10, the mechanical lead screw 10 is located in the installation hole 9, and an insulating rod 11 is hinged at the bottom end of the mechanical lead screw 10, which is insulated. The bottom end of the rod 11 is hinged with a hydraulic lead screw 12, the bottom end of the hydraulic lead screw 12 is hinged with a thread lifter, and the thread lifter is provided with a hook.

When using the utility model to carry out the disassembly and assembly of the insulator by using the utility model for the live replacement of the insulator, the width and distance of the concave slot 8 are first adjusted so that it is in line with the cross arm on the upper part of the insulator. Then fix the whole device on the cross arm, adjust the mechanical lead screw 10 and the hydraulic lead screw 12 in turn, so that the hooks on the wire lifting rods at the bottom ends lift the wire, so as to transfer the load of the wire to the insulator to the cross arm to facilitate the operator to remove and replace the insulator.

Preferably, in order to facilitate the sequential lifting of the four-split wires at the bottom of the insulator, the wire rod includes a first wire rod 13, and the bottom end of the first wire rod 13 is fixedly connected to the second wire rod 14 by screws. The first thread lifter 13 is provided with a first hook 15 , and the second thread lifter 14 is provided with a second hook 16 .

Preferably, in order to increase the friction force between the cross-arm clip and the cross-arm during installation, the surface of the concave clip groove 8 is provided with a non-slip surface to ensure connection firmness during disassembly and assembly.

Preferably, in order to facilitate the disassembly, assembly, storage and transportation of the whole device at the site of use, between the mechanical lead screw 10 and the insulating rod 11 , between the insulating rod 11 and the hydraulic lead screw 12 , and between the hydraulic lead screw 12 and the thread lifter Both are connected by detachable bolt fasteners 17.

Preferably, in order to keep the wire in the hook all the time during the lifting process, as shown in FIG. 6 , the hook includes an arc-shaped support rod 18, one end of the arc-shaped support rod 18 is fixedly connected to the wire lifting rod, and the arc-shaped support rod is The other end of 18 is hinged with a rotating rod 20 through the first rotating shaft 19. Corresponding to the top position of the rotating rod 20, there is also a blocking rod 21 on the thread lifting rod that can be in contact with it. A first torsion spring 22 is installed on the shaft, and the first torsion spring 22 always has a tendency to press the rotating rod 20 against the blocking rod 21 to be in contact therewith. When the hook of the above structure is lifting the wire, the wire first falls on the rotating rod 20. During the gradual upward movement of the hook, the rotating rod 20 overcomes the pressure of the first torsion spring 22 and moves along the first rotating shaft 19 due to the self-weight of the wire. Rotate, the rotating rod 20 is separated from the blocking rod 21, the wire falls into the arc-shaped support rod 18, the rotating rod 20 that loses the pressure of the wire returns to its original position under the action of the first torsion spring 22, and the wire is fixed in the arc-shaped support rod. The rod 18 , the rotating rod 20 and the blocking rod 21 are in a closed ring, which can ensure that the wire will not be separated from the hook during the lifting process of the wire.

Preferably, in order to further facilitate the operator to manually adjust the closed and open states of the wire, as shown in FIG. 7 , the wire lifting rod includes two sets of wire lifting and clamping devices arranged up and down, and the wire lifting and clamping devices each include sliding Sleeve 23, the sliding sleeve 23 is located on the thread lifting rod and can slide up and down along it, the thread lifting rod at the bottom of the sliding sleeve 23 is fixedly installed with hooks, and the thread lifting rod between the hook and the sliding sleeve 23 is provided with a toggle block 24, Corresponding to the position of the toggle block 24, a positioning and avoiding groove 25 is opened in the sliding sleeve 23, and mounting plates 26 are horizontally provided on both sides of the positioning and avoiding groove 25, and the second rotating shaft 27 is installed between the mounting plates 26. There is an L-shaped blocking plate 28. As shown in FIG. 9, a positioning block 29 is fixedly mounted on the upper sides of the two mounting plates 26, and a second torsion spring 30 is coaxially mounted on the second rotating shaft 27. The second torsion spring 30 There is always a tendency for the L-shaped blocking plate 28 to be pressed against the positioning block 29 . When the sliding sleeve 23 descends and the toggle block 24 is located in the positioning and avoiding groove 25, it can push the L-shaped blocking plate 28 to rotate and cooperate with the hook to close.

As shown in FIG. 8 , the sliding sleeve 23 is also provided with a locking device matched with the thread lifting rod. The locking device includes a positioning insert block 31 , and the thread lifting rod is provided with a positioning insert block 31 matching with the positioning insert block 31 . The positioning jack 32 corresponds to the positioning plug 31, and a horizontal sliding hole 33 is opened in the sliding sleeve 23. The sliding hole 33 is provided with a sliding block 34 that matches with it. One end of the sliding block 34 is connected by a connecting rod 35. Positioning plug 31, a pull handle 38 is installed on the other end of the sliding block 34, an annular plate 36 is fixedly installed in the inner circumference of the sliding hole 33 where the connecting rod 35 and the sliding block 34 are connected, and the annular plate 36 and the positioning plug 31 are fixedly installed. A spring 37 is installed between the two, the spring 37 is located on the outer circumference of the connecting rod 35, and there is always a tendency for the positioning plug 31 to enter the positioning insertion hole 32, and the pulling handle 38 between the above two wire lifting and clamping devices is fixedly connected, In order to realize the linkage of two wire lifting and clamping devices.

When the wire lifting rod of the above structure is used for wire lifting operation, as shown in FIG. 7 , the wire enters the hook at the bottom of the L-shaped blocking plate 28, and then the operator holds the pulling handle 38 and pulls it away from the sliding sleeve 23, so that the positioning plug The block 31 compresses the spring 37 out of the positioning hole 32, and then moves the pull handle 38 and the sliding sleeve 23 down, and the L-shaped blocking plate 28 contacts the toggle block 24 during the downward movement until the L-shaped blocking plate 28 is turned over to The horizontal position is closed with the hook. As shown in Figure 10, the toggle block 24 and the L-shaped blocking plate 28 are located at the top position of the positioning and avoiding groove 25, the sliding sleeve 23 is no longer moved down, and the overall structure is in a position where the wire is closed. state. When the closed state is to be released, it is only necessary to move the pull handle 38 up to the positioning insert block 31 to cooperate with the positioning jack 32. The whole process is easy to operate and has a good sealing effect on the wire, which can ensure that the wire is always in the process of lifting. Located in the hook to ensure the normal operation of insulator replacement.

The technical solutions of the present invention are not limited to the scope of the embodiments described in the present invention. The technical contents not described in detail in the present invention are all known technologies.

Claims (6)

1. A tool for replacing insulators with an ultra-high-voltage large-gear linear tower live, including a cross-arm card and a wire lifter, characterized in that: the cross-arm card includes a first wedge block (1) and a second wedge block (1). 2), the upper end of the first wedge-shaped block (1) is provided with a groove (3), the upper end of the second wedge-shaped block (2) is provided with a convex block (4) matched with the groove (3), and the groove (3) ) and the boss (4) are provided with a through hole (5), a bolt (6) is arranged in the through hole (5), and a nut ( 7), a concave slot (8) is provided at the connection position of the bottom end of the first wedge block (1) and the second wedge block (2), and the degree of cooperation between the bolt (6) and the nut (7) is adjusted The width and distance of the concave card slot (8) can be adjusted, and installation holes (9) are vertically opened on both sides of the concave card slot (8), and one of the installation holes (9) is located in the first wedge-shaped block ( 1), another mounting hole (9) is located on the second wedge block (2), each mounting hole (9) is provided with a wire lifter, and each wire lifter includes a mechanical lead screw (10). ), the mechanical lead screw (10) is located in the installation hole (9), the bottom end of the mechanical lead screw (10) is hinged with an insulating rod (11), and the bottom end of the insulating rod (11) is hinged with a hydraulic lead screw ( 12), the bottom end of the hydraulic lead screw (12) is hinged with a thread lifter, and the thread lifter is provided with a hook. 2 . The tool for replacing insulators with lively replacement of an ultra-high voltage large-gauge linear tower according to claim 1 , wherein the wire lifting rod comprises a first wire lifting rod ( 13 ), and the first wire lifting rod ( 2 . The bottom end of 13) is fixedly connected to the second thread lever (14) by screws, the first thread lever (13) is provided with a first hook (15), and the second thread lever (14) is provided with a first hook (15). Two hooks (16). 3 . The tool for replacing the insulators of an ultra-high voltage large-gauge linear tower with electricity according to claim 1 , wherein the surface of the concave slot ( 8 ) is provided with an anti-skid surface. 4 . 4 . A tool for replacing insulators with lively replacement of an ultra-high voltage large-gauge linear tower according to claim 1 , wherein: between the mechanical lead screw (10) and the insulating rod (11), the insulating rod (11) ) and the hydraulic screw (12), and between the hydraulic screw (12) and the thread lifter are connected by detachable bolt fasteners (17). 5. A tool for live replacement of insulators for ultra-high voltage large-gauge linear towers according to claim 1, characterized in that: the hook comprises an arc-shaped support rod (18), and one end of the arc-shaped support rod (18) The other end of the arc-shaped support rod (18) is hinged with a rotating rod (20) through the first rotating shaft (19), corresponding to the top position of the rotating rod (20), on the thread lifting rod. There is also a blocking rod (21) that can be in contact with it, a first torsion spring (22) is coaxially mounted on the first rotating shaft (19), and the first torsion spring (22) always has a rotating rod (20) The tendency to press the stopper (21) into contact with it. 6. A kind of tool for replacing insulators in a super-high voltage large-gauge linear tower with electricity according to claim 1, characterized in that: the wire lifting rod comprises two sets of wire lifting and clamping devices arranged up and down, and the wire lifting The clamping devices all include a sliding sleeve (23), the sliding sleeve (23) is located on the thread lifting rod and can slide up and down along it, and a hook is fixedly installed on the thread lifting rod at the bottom of the sliding sleeve (23), and the hook and the sliding sleeve (23) There is a toggle block (24) on the thread lifting rod between them, corresponding to the position of the toggle block (24), and a positioning avoidance groove (25) is opened in the sliding sleeve (23), and the positioning avoidance groove ( Both sides of 25) are horizontally provided with mounting plates (26), between the mounting plates (26) through the second rotating shaft (27) is installed an L-shaped blocking plate (28), which is fixed on the upper sides of the two mounting plates (26). A positioning block (29) is installed, and a second torsion spring (30) is coaxially installed on the second shaft (27), and the second torsion spring (30) always presses the L-shaped blocking plate (28) toward the positioning The tendency of the block (29), when the sliding sleeve (23) descends and the toggle block (24) is located in the positioning and avoiding groove (25), it can push the L-shaped blocking plate (28) to rotate and cooperate with the hook to close, in the described The sliding sleeve (23) is also provided with a locking device matched with the thread lifting rod, the locking device includes a positioning insert block (31), and a positioning insert matched with the positioning insert block (31) is arranged on the thread lifting rod The hole (32) corresponds to the positioning insert block (31), a horizontal sliding hole (33) is opened in the sliding sleeve (23), and the sliding hole (33) is provided with a sliding block (34) matched with it. One end of the block (34) is connected to the positioning insert block (31) through a connecting rod (35), and a pulling handle (38) is installed on the other end of the sliding block (34), and the connecting rod (35) is connected with the sliding block (34) An annular plate (36) is fixedly installed on the inner circumference of the sliding hole (33) at the position, and a spring (37) is installed between the annular plate (36) and the positioning insert (31), and the spring (37) is located on the connecting rod (35). ), and there is always a tendency for the positioning inserts (31) to enter the positioning sockets (32), the pull handles (38) between the two wire lifting and clamping devices are fixedly connected, so as to facilitate the realization of the two wire lifting The linkage of the clamping device.

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