CN202059096U - Tool component capable of replacing insulator string electrically - Google Patents

Abstract

The utility model provides a tool component capable of replacing an insulator string electrically. The tool component comprises a tower cross arm fixture (1), a horizontal connecting rod (12), a lead screw lifting device (2), screws (22) and lifting hooks (23), wherein the tower cross arm fixture (1) comprises two fixture bodies (11) which are respectively provided with cross arm clamping grooves (111) extending horizontally and lead screw installing grooves extending vertically; the horizontal connecting rod (12) is connected with and tensions the two fixture bodies (11); the lead screw lifting device (2) comprises lead screws (21) which are arranged in the lead screw installing grooves; the screws (22) are arranged at the upper ends of the lead screws (21) and supported on the fixture bodies (11); and the lifting hooks (23) are connected to the lower ends of the lead screws (21). The tool component has high stability, good bearing capacity and higher insulation level.

Description

Tool assembly for live replacement of insulator strings

technical field

The utility model relates to a tool assembly for replacing insulator strings with electricity.

Background technique

Overhead transmission lines keep metal wires insulated and distanced from the ground through towers, connecting fittings and insulator strings, so that a steady stream of electricity is sent from the power plant to the user according to the path we stipulate. Insulators, fittings and wires of transmission lines will inevitably suffer from various damages during operation, and these damages must be repaired within an appropriate time. Repairs can be done with or without power outages. To complete the maintenance of transmission lines without power outage, we call it live work.

To replace the insulator string with electricity, it is necessary to transfer the weight load and electrical insulation function of the wire originally borne by the insulator string to a set of insulation tools. According to the line voltage level, wire specification, model and structure, we can choose the insulation pull rod with the corresponding length and load capacity. , lifting screw and hook, and the most critical thing is to equip or design fixing fixtures according to different tower cross-arm structures.

At present, there is no tool assembly designed for Sn1 and Sn2 towers with special cross-arm clamps for live replacement of insulator strings. The common method is to use insulated tackle groups and bind the tackle groups to the cross-arms through rope sleeves. , Such a structure has poor stability and load-bearing capacity, the maximum is 20kN, and the insulation level is easily affected by external environments such as humidity and surface dirt.

Utility model content

The utility model aims to provide a tool assembly for replacing insulator strings with electricity, so as to solve the technical problem of poor stability and load-bearing capacity of the tool assembly for replacing insulator strings with electricity in the prior art.

In order to achieve the above purpose, the utility model provides a tool assembly for live replacement of insulator strings, including: pole and tower cross-arm clamps, including: two clamp bodies, respectively having cross-arm clamping slots extending horizontally and along the The longitudinally extending lead screw installation groove; the horizontal connecting rod, which connects and tightens the two jig bodies; the lead screw lifting device, including: the lead screw, which is set in the lead screw installation groove; the screw nut, which is installed on the upper end of the lead screw and supported on the jig body; and a hook connected to the lower end of the lead screw.

Further, an adjustment handle is installed on the screw nut.

Further, the adjusting handle extends horizontally along the radial direction of the nut.

Further, the screw lifting device further includes an insulating pull rod, and the hook is connected to the lower end of the lead screw through the insulating pull rod.

Further, the horizontal connecting rod includes two end connecting sections respectively connected to the two clamp bodies and an intermediate adjusting connecting rod whose two ends are respectively screwed to the two end connecting sections.

Further, the horizontal connecting rod is respectively hinged with the two fixture bodies.

Further, the contact end between the nut and the fixture body is a spherical crown, and the upper end surface of the fixture body is provided with a spherical groove matching the spherical crown.

Further, the side of the clamp body is also provided with a pressing block with an oblong through groove, and the pressing block is connected with the clamp body through the oblong through groove to stop the pole tower cross arm located in the cross arm clamping groove. the end of the angle iron.

Further, an installation opening is provided on the side of the lead screw installation groove on the fixture body, and a locking bolt extending horizontally is provided at the installation opening.

According to the technical solution of the utility model, due to the adoption of the tool assembly for live replacement of insulator strings with special pole and tower cross-arm clamps, the poor stability and load-bearing capacity of the tool assembly for live replacement of insulator strings in the prior art is overcome. The technical problem of low insulation level, its high stability, good load-bearing capacity, easy installation and high insulation level.

Description of drawings

The accompanying drawings constituting a part of this application are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and their descriptions are used to explain the utility model, and do not constitute an improper limitation of the utility model. In the attached picture:

Fig. 1 is a schematic structural view of a tool assembly for live replacement of an insulator string according to the present utility model;

Fig. 2 is a schematic diagram of the front structure of the pole tower cross-arm jig of the tool assembly for live replacement of the insulator string according to the utility model; and

Fig. 3 is a schematic bottom view structure diagram of the pole and tower cross-arm jig of the tool assembly for live replacement of insulator strings according to the utility model.

Detailed ways

The embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings, but the utility model can be implemented in various ways defined and covered by the claims.

As shown in Figure 1 is a tool assembly for live replacement of insulator strings of the utility model, the tool assembly for live replacement of insulator strings includes: pole tower cross arm clamp 1 and screw lifting device 2, wherein the pole tower cross arm The jig 1 includes: two jig bodies 11 and a horizontal connecting rod 12 .

As shown in Fig. 2, the two fixture bodies 11 respectively have cross-arm clamping grooves 111 extending horizontally to be clamped on the cross-arms of the tower and screw mounting grooves extending longitudinally, and the horizontal connecting rods 12 are connected and tightened. Two fixture bodies 11. Lead screw lifting device 2 includes: lead screw 21, screw nut 22 and suspension hook 23, lead screw 21 is arranged in the lead screw installation groove, screw nut 22 is installed on the upper end of lead screw 21 and supported on the jig body 11, And the hook 23 is connected to the lower end of the lead screw 21 .

As shown in Figure 3, the cross-arm jig 1 of the tool assembly for live replacement of the insulator string fully utilizes the local structure of the cross-arm of the tower. The angle iron of the cross arm just catches the cross arm clamping groove 111 of the two fixture bodies 11, so that the hook 23 and the lead screw 21 are located directly above the wire of the insulator string to be replaced, the hook 23 hooks the wire, and then rotates Screw nut 22, as shown in Figure 1, is equipped with adjusting handle 24 on the screw nut 22, and adjusting handle 24 can rotate the screw nut 22 more conveniently and labor-savingly, further preferably, adjusts the handle 24 to extend horizontally along the radial direction of the screw nut 22, The torque of adjusting the handle 24 can be kept relatively large like this, and it is more convenient and labor-saving to rotate the screw nut 22. When the lead screw 21 is lifted up with the rotation of the screw nut 22, the hook 23 hooks the wire, and transfers the weight mechanical load of the wire originally borne by the insulator string and the electrical insulation function to the tool assembly for replacing the insulator string with electricity, thereby The insulator string can be replaced safely and conveniently, which overcomes the technical problems of poor load-bearing capacity and low insulation level of tool components for live replacement of the insulator string in the prior art, and has high stability, good load-bearing capacity, and high insulation level.

Referring to Fig. 1 again, according to a preferred embodiment of the lead screw lifting device 2 shown in Fig. lower end. The insulating pull rod 25 can ensure the insulation between the hook 23 and the lead screw 21 when the tool assembly for replacing the insulator string with electricity is working, thereby improving the insulation level of the tool assembly for replacing the insulator string with electricity, and is free from external environmental influences such as humidity and surface dirt .

As a preferred embodiment, it can be seen from Fig. 1, Fig. 2 and Fig. 3 that the horizontal connecting rod 12 includes two end connecting sections 121 respectively connected to the two clamp bodies 11 and two ends respectively The middle adjusting link 122 screwed to the two end connecting sections 121 can use the middle adjusting link 122 to adjust the length of the entire horizontal connecting rod 12, so as to achieve tensioning of the two fixture bodies 11 to balance the cross arm of the tower Due to the overturning moment of fixture 1, the large side angle steel of the cross arm of the tower is only subjected to the vertical component force.

Preferably, as can be seen from FIG. 1 and FIG. 2 , the horizontal connecting rod 12 is hinged to the two clamp bodies 11 respectively. Since the positions of the local angle irons of the tower cross arms corresponding to the two clamp bodies 11 may not be horizontal, the hinged connection between the horizontal connecting rod 12 and the two clamp bodies 11 can still be used to tighten the two clamp bodies 11 To balance the effect of the overturning moment of the pole tower cross arm fixture 1.

It can be seen from FIG. 1 and FIG. 3 that the contact end between the nut 22 and the fixture body 11 is a spherical crown, and the upper end surface of the fixture body 11 is provided with a spherical groove 112 matching the spherical crown. Such a structure makes the rotating screw nut 22 lift the lead screw 21 flexible and labor-saving, and at the same time prevents the lead screw 21 from being easily broken due to the bending moment due to the change of the angle at which the hook 23 hooks the wire.

As shown in Figure 3, the side of the fixture body 11 is also provided with a briquetting block 113 with an oblong through groove, and the briquetting block 113 is connected with the fixture body 11 through an oblong through groove so that the stopper is positioned at the cross arm clamp. Connect the end of the angle iron of the pole tower cross arm in the groove 111. When the angle iron of the cross-arm of the pole tower is snapped into the cross-arm clamping groove 111, the pressing block 113 can move along the oblong through groove, and then press against the angle iron to prevent the angle iron from slipping out of the cross-arm clamping groove 111, strengthening It ensures the stability and firmness of the clamping connection, and at the same time, it can adapt to the angle iron structure of the three-layer cross-arm of the pole tower, and has a wide range of applications.

It can also be seen from FIG. 1 , FIG. 2 and FIG. 3 that an installation opening is provided on the side of the lead screw installation groove on the fixture body 11 , and a locking bolt 114 extending horizontally is provided at the installation opening. The lead screw 21 is installed in the lead screw installation groove through the installation opening, and then locked and fixed by the locking bolt 114, which is convenient for the installation of the whole set of tools. Falling off due to mishandling endangers workers below.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (9)

1. A tool assembly for live replacement of insulator strings, characterized in that it comprises: Tower cross-arm fixture (1), including: The two jig bodies (11) respectively have horizontally extending cross-arm engaging grooves (111) and longitudinally extending screw mounting grooves; A horizontal connecting rod (12), connecting and tensioning the two fixture bodies (11); Lead screw lifting device (2), including: Lead screw (21), arranged in the said lead screw installation groove; A screw nut (22), installed on the upper end of the lead screw (21) and supported on the fixture body (11); and The hook (23) is connected to the lower end of the leading screw (21). 2. The tool assembly for live replacement of insulator strings according to claim 1, characterized in that an adjustment handle (24) is installed on the screw nut (22). 3. The tool assembly for live replacement of insulator strings according to claim 2, characterized in that the adjustment handle (24) extends horizontally along the radial direction of the screw nut (22). 4. The tool assembly for live replacement of insulator strings according to claim 1, characterized in that, the screw lifting device (2) further comprises an insulating pull rod (25), and the hook (23) passes through the insulating A pull rod (25) is connected to the lower end of the lead screw (21). 5. The tool assembly for live replacement of insulator strings according to claim 1, characterized in that, the horizontal connecting rod (12) includes two end connections respectively connected to the two fixture bodies (11) A section (121) and an intermediate adjusting link (122) whose two ends are respectively screwed to the two end connecting sections (121). 6. The tool assembly for live replacement of insulator strings according to claim 5, characterized in that, the horizontal connecting rod (12) is hinged to the two clamp bodies (11) respectively. 7. The tool assembly for live replacement of insulator strings according to claim 1, characterized in that, the contact end between the nut (22) and the fixture body (11) is a spherical crown, and the fixture body The upper end surface of (11) is provided with a spherical groove (112) matched with the spherical crown. 8. The tool assembly for live replacement of insulator strings according to claim 1, characterized in that, the side of the fixture body (11) is also provided with a pressing block (113) with an oblong through groove, the The pressure block (113) is connected with the fixture body (11) through the oblong through slot to stop the end of the angle iron of the cross arm of the pole tower located in the cross arm clamping slot (111). 9. The tool assembly for live replacement of insulator strings according to claim 1, wherein an installation opening is provided on the side of the screw installation groove on the fixture body (11), and an installation opening is provided at the installation opening. There are locking bolts (114) extending horizontally.

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