An insulator facilitating wire connection

Abstract

The present invention discloses an insulator facilitating wire connection, which relates to the technical field of insulators and includes an insulating member and a wire connection fitting. The wire connection fitting includes two clamping units and two metal straps. Both ends of each metal strap respectively have a loop buckle and a hook-shaped structure. The clamping unit includes a semi-ring, and both ends of the semi-ring are respectively fixedly connected with ear buckles having through holes. Two ear buckles at the aligned ends of the two clamping units form an ear buckle combination. At least one ear buckle in each ear buckle combination has a support bracket for supporting the wire. After each metal strap is sleeved on the wire in the wire groove of the insulating member, its two hook-shaped structures are respectively and correspondingly hooked on the two ear buckles of the corresponding ear buckle combination for pre-connecting the wire. And by passing a fastening nut through the overlapping two loop buckles and two through holes and then screwing on the fastening nut, the two semi-rings are tightly clamped to constrict the neck, and the metal strap binds the wire and makes the wire located between the support bracket and the wire groove bend downward to complete the wire connection.

Description

Technical Field

[0001] The present invention relates to the technical field of insulators, and specifically to an insulator facilitating the connection of wires. Background Art

[0002] The power transmission network needs to be continuously expanded and upgraded, which puts higher requirements on the performance and installation convenience of power equipment such as insulators to ensure efficient and stable power transmission. There are usually two methods for connecting insulators and wires: the binding method and the clamp method.

[0003] In the binding method, first wrap the aluminum-clad tape along the winding direction of the aluminum stranded wire, with an exposed winding length of 30 mm to protect the wire from being abraded. Leave a short head of about 150 mm, tie it around the wire on the left side of the insulator from bottom to top for 3 turns, then wrap around the outside of the insulator's neck to the wire on the right side, and then tie it from bottom to top for 3 turns. Repeat this process, and finally form a cross at the top. Twist the two ends of the aluminum binding wire for 3 - 4 turns, and cut and flatten them.

[0004] The clamp in the clamp method is fixedly connected to the top of the insulator body and consists of components such as a clamp body, bolts, nuts, etc. Place the wire into the wire groove of the clamp, and by tightening the bolts, the pressing plate of the clamp presses the wire tightly and fixes it on the insulator. The bolt-type clamp is suitable for wires of different cross-sections. Its advantages are convenient installation and reliable connection. The corresponding type of clamp can be selected according to the wire specifications. During installation, it is necessary to ensure that the tightening torque of the bolts meets the requirements to prevent loosening or over-tightening and damaging the wire.

[0005] For an insulating part with an umbrella-shaped porcelain body, its top cannot be directly connected to the clamp. Therefore, the binding method is usually used to fix the wire. However, the binding method is relatively complex, takes a long time for binding, has low operation efficiency, and the firmness of the binding method is lower than that of the clamp method. Summary of the Invention

[0006] The purpose of the present invention is to provide an insulator facilitating the connection of wires to solve the problems of low efficiency and firmness in the connection operation between the insulator and the wire in the above-mentioned prior art.

[0007] To achieve the above object, the present invention provides the following technical solution: An insulator facilitating wire connection, comprising an insulating member and a wire connection fitting connecting the insulating member and the wire. The wire connection fitting includes two clamping units and two metal straps. Each end of each metal strap has a loop buckle and a hook-shaped structure respectively. Each clamping unit includes a semi-ring, and both ends of the semi-ring are fixedly connected with ear buckles having through holes. When the semi-rings of the two clamping units are clamped to the necking part of the insulating member, the two ear buckles at the aligned ends of the two clamping units form an ear buckle combination. The two metal straps and the two ear buckle combinations are arranged in one-to-one correspondence. At least one ear buckle in each ear buckle combination has a support bracket for supporting the wire. After each metal strap is sleeved on the wire in the wire groove of the insulating member, its two hook-shaped structures are respectively hooked onto the two ear buckles of the corresponding ear buckle combination for pre-connecting the wire, and by passing a fastening nut through the overlapping two loop buckles and the two through holes and then screwing on the fastening nut, the two semi-rings are clamped tightly to the necking part, and the metal strap binds the wire tightly and makes the wire between the support bracket and the wire groove bend downward to complete the wire connection.

[0008] Further, the metal strap is in the shape of an arc-shaped flat strip, only binding the wire in one circle, and the inner side of the metal strap has a plurality of convex parts.

[0009] Further, the convex parts are in the shape of round dots or thorns.

[0010] Further, the metal strap includes a plurality of strips arranged side by side, and each strip is fixedly connected between the two loop buckles, only binding the wire in one circle.

[0011] Further, a cushion block is fixedly connected above each ear buckle of the two ear buckle combinations.

[0012] Further, the metal strap is in the shape of a strip, binding the wire in multiple circles.

[0013] Further, the metal strap is a copper strap or a stainless steel strap.

[0014] Further, the number of the support brackets is two, which are respectively arranged on the two clamping units.

[0015] Further, the number of the support brackets is four, and each ear buckle of the two ear buckle combinations is provided with a support bracket.

[0016] Further, the inner arc surfaces of the two semi-rings are respectively adapted to the necking part of the insulating member.

[0017] In the above technical solution, for an insulator facilitating wire connection, when connecting a wire, first slip two metal tie straps onto the wires on both sides of the insulating part, then place two clamping units in alignment on the necking part of the insulating part. The hook-shaped structures of the two metal tie straps respectively hook and sleeve the earring combinations of the two clamping units. The axes of the through holes of the earring combinations in the same group coincide with the axes of the loop buckles on the corresponding metal tie straps, thus forming a pre-connection among the clamping units, metal tie straps, insulating part, and wire. Then, pass a fastening bolt through the through holes of the earring combinations in the same group and the two loop buckles on the corresponding metal tie strap, and tighten the fastening nut to constrict the necking part of the two semi-loop buckles. At the same time, tighten the metal tie strap to bind the wire tightly. Moreover, due to the support of the wire bottom by the wire groove on the top of the insulating part and the support bracket on the earring, after the metal tie strap is tightened, the wire between the wire groove and the support bracket bends slightly downward, making the connection between the wire and the insulating part more firm, especially the wire is not prone to looseness and deviation along its length direction.

[0018] In the present invention, the temporary fixation of the two clamping units is achieved through the pre-connection and cooperation between the metal tie strap and the clamping unit. The axes of the through holes of the earring combinations in the same group also coincide with the axes of the loop buckles on the corresponding metal tie strap. Thus, it is very convenient to pass the fastening bolt through the earring and the loop buckle at one time quickly, and the operation is more convenient and fast. During the process of installing the fastening bolt, there is no need to manually position the metal tie strap and the two clamping units and maintain them all the time; moreover, tightening the fastening nut can simultaneously achieve the two links of locking between the clamping unit and the insulating part and locking between the metal tie strap and the wire, thereby achieving the effect of connecting and fixing the wire and the insulating part. While having a very high connection firmness, it further improves the convenience of the connection operation and the working efficiency of connecting the wire to the insulating part. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to describe the technical solutions in the embodiments of the present application or the prior art more clearly, the following will briefly introduce the drawings required in the embodiments.

[0020] Figure 1 Schematic diagram of the connection structure among the insulating part, wire, and wire connection fitting provided for the embodiment;

[0021] Figure 2 Schematic diagram of the structure of the wire connection fitting provided for the embodiment;

[0022] Figure 3 Schematic diagram of the pre-assembled structure among the insulating part, wire, and wire connection fitting provided for the embodiment;

[0023] Figure 4 Schematic diagram of the pre-connection structure between the metal tie strap and the clamping unit provided for the embodiment;

[0024] Figure 5Schematic diagram of the connection structure between the insulating part, the wire and the wire connection fitting provided for another embodiment;

[0025] Figure 6 Schematic structure of the metal tie strap provided for the embodiment Figure Ⅰ ;

[0026] Figure 7 Schematic structure of the metal tie strap provided for the embodiment Figure Ⅱ ;

[0027] Figure 8 Schematic structure of the metal tie strap provided for the embodiment Figure Ⅲ ;

[0028] Figure 9 Schematic structure of the metal tie strap provided for the embodiment Figure Ⅳ ;

[0029] Figure 10 Schematic diagram of the structure during use provided for the embodiment;

[0030] Figure 11 For Figure 10 Enlarged view of the structure at A in

[0031] Figure 12 For Figure 10 Enlarged view of the structure at B in

[0032] Explanation of reference numerals:

[0033] 100, wire connection fitting; 101, clamping unit; 102, half ring; 103, ear buckle; 104, through hole; 105, support bracket; 106, metal tie strap; 107, loop buckle; 108, hook-shaped structure; 109, fastening bolt; 110, fastening nut; 111, cushion block; 112, convex part; 200, cross arm connection fitting; 201, mounting seat; 202, steel foot; 203, hinge support; 204, collar; 205, first positioning ring; 206, second positioning ring; 207, locking bolt; 208, locking nut; 300, insulating part; 400, cross arm; 500, wire. Detailed implementation manners

[0034] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] Please refer to Figures 1 - 12, an insulator facilitating wire connection provided by an embodiment of the present invention includes an insulating member 300, a wire connection fitting 100 and a cross-arm connection fitting 200 located at both ends of the insulating member 300. The wire connection fitting 100 is used to connect the insulating member 300 and a wire 500, and the insulating member 300 is an insulating member in the shape of an umbrella skirt porcelain body. The wire connection fitting 100 includes two engaging units 101 capable of being engaged with each other and two metal straps 106. The metal strap 106 is generally in the shape of a "Ji" character. Both ends of each metal strap 106 are respectively provided with a loop 107 and a hook-shaped structure 108, and a notch for avoiding a fastening nut 110 is formed on the hook-shaped structure 108. The metal strap 106 is a copper strap or a stainless steel strap. Each engaging unit 101 includes a semi-ring 102, the semi-ring 102 is approximately semi-circular, the inner arc surface of the semi-ring 102 is adapted to the necking part of the insulating member 300, and both ends of the semi-ring 102 are respectively fixedly connected with an earring 103, and a through hole 104 is formed in the earring 103. When the semi-rings 102 of the two engaging units 101 are clamped to the necking part of the insulating member 300, the two earrings 103 at the aligned ends of the two engaging units 101 form an earring combination. Therefore, there are two earring combinations between the two engaging units 101, and one metal strap 106 corresponds to one earring combination. Therefore, the two metal straps 106 respectively correspond to the two earring combinations. One or two earrings 103 in each earring combination are fixedly connected with a support bracket 105. The support bracket 105 is located at one end of the earring 103 far from the corresponding semi-ring 102, and the height of the support bracket 105 is flush with the bottom height of the wire groove of the insulating member 300 and is on the same straight line as the wire groove.

[0036] The insulating part 300 is pre-installed on the cross arm 400 through the cross arm connecting fitting 200. The wire 500 tightened by the wire tightening device is stuck in the wire groove at the top of the insulating part 300. When fastening the wire 500 and the insulating part 300, first, two metal straps 106 are sleeved on the wire 500 on both sides of the insulating part 300. Then, the two clamping units 101 are placed opposite to each other on the necking part of the insulating part 300. At this time, the two clamping units 101 are not fastened and will slide off the insulating part 300 as soon as the hand is released. Therefore, the ear hooks 103 of the two clamping units 101 need to be respectively hooked and sleeved through the hook-shaped structures 108 of the two metal straps 106. The two loop buckles 107 are located between the two ear hooks 103. The axes of the through holes 104 of the ear hooks 103 in the same group coincide with the axes of the loop buckles 107 on the corresponding metal straps 106, thus forming a pre-connection among the clamping unit 101, the metal strap 106, the insulating part 300 and the wire 500. Then, the fastening bolt 109 is passed through the through holes 104 of the ear hooks 103 in the same group and the two loop buckles 107 on the corresponding metal strap 106, and the fastening nut 110 is tightened to make the two clamping units 101 approach each other. On the one hand, the two semi-rings 102 are buckled to tighten the necking part. On the other hand, the two approaching ear hooks 103 gradually bend the metal strap 106 to wrap the wire 500, so that the metal strap 106 is tightened to tie the wire 500 tightly. And due to the support of the wire groove at the top of the insulating part 300 and the support bracket 105 on the ear hook 103 for the bottom of the wire 500, after the metal strap 106 is tightened, the wire 500 between the wire groove and the support bracket 105 bends slightly downward, making the connection between the wire 500 and the insulating part 300 more firm, especially the wire 500 is not easy to loosen and shift along its length direction.

[0037] In order to improve the fastening degree of the metal strap 106 to the wire 500, the present invention designs the following several metal straps 106. Refer to Figures 1 - 4 , Figure 6 , in the first embodiment, the metal strap 106 is in an arc-shaped flat strip shape and only binds the wire 500 in one circle. There are a plurality of tiny convex parts 112 in the middle of the inner side of the metal strap 106. The convex parts 112 are in a dot shape or a thorn shape. After the metal strap 106 is sleeved on the wire 500 from top to bottom, during the subsequent process of locking by the bolt connection pair, the metal strap 106 is tightened, so that the convex parts 112 in the middle of the inner side of the metal strap 106 are inserted into the wire 500, and the connection between the metal strap 106 and the wire 500 is more firm, and the wire 500 is not easy to loosen and shift in the length direction. If the wire 500 is a bare wire, then the thorn-shaped convex parts 112 are selected, which can directly slightly penetrate into the wire 500; if the wire 500 is a sheathed wire, then the dot-shaped convex parts 112 are selected, and the dot-shaped convex parts 112 can be pressed into the outer skin of the wire 500 without piercing and damaging the outer skin.

[0038] Refer toFigure 1 , Figure 7 In the second embodiment, the metal cable tie 106 includes a plurality of strips arranged side by side. Each strip is fixedly connected between two buckles 107 and only binds the wire 500 for one turn. After the metal cable tie 106 is sleeved on the wire 500 from top to bottom, during the subsequent tightening process by the bolt connection pair, the metal cable tie 106 tightens. The huge pressure of each strip on the wire 500 will cause a slight depression on the surface of the wire 500, while the wire 500 at the gap between the strips will not be squeezed, but instead protrudes slightly into the gap, so that the connection between the metal cable tie 106 and the wire 500 is more firm, and the wire 500 is not likely to loosen and shift in the length direction.

[0039] In the above two embodiments, referring to Figure 2 , a cushion block 111 is provided at the top of the ear buckle 103. The cushion block 111 is welded to the ear buckle 103 or integrally formed with the ear buckle 103. When the metal cable tie 106 is tightened, the cushion block 111 will make the metal cable tie 106 wrap more around the bottom of the wire 500, so as to achieve a better binding effect on the wire 500.

[0040] Referring to Figure 5 , Figures 8 - 9 , in the third embodiment, the metal cable tie 106 is in a strip shape and binds the wire 500 for two to three turns. Of course, theoretically, it can bind more turns. Compared with the metal cable tie 106 in the previous two embodiments, the metal cable tie 106 in this embodiment has a better firmness in binding the wire 500, and the wire 500 is not likely to have axial loosening and offset.

[0041] There are also various specific setting methods for the support bracket 105. The first is that the number of support brackets 105 is two, which are distributed in two combinations of ear buckles 103 and are respectively arranged on two clamping units 101; the second is that the number of support brackets 105 is two, which are distributed in two combinations of ear buckles 103, but are arranged on the same clamping unit 101; the third is that the number of support brackets 105 is four, and a support bracket 105 is provided on each ear buckle 103 of the two combinations of ear buckles 103, and the two support brackets 105 in the same combination of ear buckles 103 are staggered in the length direction of the wire 500.

[0042] In the present invention, the pre-connection and cooperation between the metal tie 106 and the clamping unit 101 realize the temporary fixation of the two clamping units 101. The through holes 104 of the ear buttons 103 in the same group and the loop 107 of the corresponding metal tie 106 also coincide, so that the fastening bolt 109 can be very conveniently passed through the ear button 103 and the loop 107 at one time, and the operation is more convenient and fast. During the process of installing the fastening bolt 109, there is no need to manually position the metal tie 106 and the two clamping units 101 and maintain them all the time; moreover, tightening the fastening nut 110 can simultaneously realize the two links of locking between the clamping unit 101 and the insulating part 300 and locking between the metal tie 106 and the wire 500, so as to achieve the effect of connecting and fixing the wire 500 and the insulating part 300. While having a very high connection firmness, the convenience of the connection operation is further improved, and the operation efficiency of connecting the wire 500 to the insulating part 300 is enhanced.

[0043] Refer to Figures 10 - 12 , the cross-arm connecting fitting 200 is used to connect the insulating part 300 and the cross-arm 400, and includes a steel foot 202, a mounting seat 201, a hinge support 203, a collar 204, a first positioning ring 205, a second positioning ring 206 and a set of bolt connection pairs. The steel foot 202 is fixedly connected to the bottom of the insulating part 300 and the steel foot 202 is fixedly connected to the hinge support 203. The hinge support 203 and the mounting seat 201 are rotationally connected along a horizontal axis parallel to the wire groove. The collar 204 is rotationally connected to the steel foot 202 along the axial direction of the insulating part 300. The first positioning ring 205 and the second positioning ring 206 are respectively fixedly connected to the collar through connecting rods, and by rotating the collar, the first positioning ring 205 and the second positioning ring 206 can be driven to rotate together.

[0044] When connecting the cross-arm 400, first sleeved the U-shaped mounting seat 201 on the cross-arm 400 to make the mounting holes on the mounting seat 201 coincide with the through holes 104 on the cross-arm 400, and rotate the collar 204 while the insulating part 300 is kept vertical; when the axis of the first positioning ring 205 coincides with the axis of the mounting hole, pass the locking bolt 207 through the mounting hole, the through hole 104 and the first positioning ring 205 and then thread it with the locking nut 208. Washers are installed on the inner sides of the locking nut 208 and the locking nut. Tighten the locking nut 208, and the vertical installation of the insulating part 300 is completed, as Figure 11 ; when the second positioning ring 206 faces the mounting hole, then rotate the insulating part 300 along the horizontal axis until the end face of the second positioning ring 206 abuts against the upper surface of the mounting seat 201, the axis of the second positioning ring 206 coincides with the axis of the mounting hole, pass the locking bolt 207 through the mounting hole, the through hole 104 and the second positioning ring 206 and then thread it with the locking nut 208, tighten the locking nut 208, and the insulating part 300 realizes the inclined installation, as Figure 12, with wide applicability. After the lock nut 208 is tightened, it has three functions: locking the mounting seat 201 and the cross arm 400, locking the locking collar 204 and the steel foot 202, and locking the hinge support 203 and the mounting seat 201. It is simple and convenient to install and the connection is firm.

[0045] The above describes certain exemplary embodiments of the present invention and should not be construed as limiting the scope of protection of the claims of the present invention. For those skilled in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in other different ways.

Claims

1. An insulator for connecting a wire, comprising an insulating member and a wire connecting fitting for connecting the insulating member and the wire, characterized in that: The wire connection fittings include two clamping units and two metal ties; Each metal cable tie has a loop and a hook structure at both ends, and each embracing unit includes a half ring, and both ends of the half ring are fixedly connected with ear buckles with through holes; When the half rings of the two embracing units are embracing the neck portion of the insulating member, the two ear buckles at the aligned ends of the two embracing units form an ear buckle combination, the two metal cable ties are arranged in one-to-one correspondence with the two ear buckle combinations, and at least one ear buckle in each ear buckle combination has a support bracket for supporting the wire; After each metal tie is put onto the wire in the wire slot of the insulating part, its two hook-shaped structures are hooked onto the two ear buckles of the corresponding ear buckle combination one by one to pre-connect the wire, and the fastening nut is passed through the two overlapping ring buckles and the two through holes and then screwed on to the fastening nut, so that the two semi-rings tighten the neck and the metal tie tightens the wire. With the support of the wire slot and the support bracket on the bottom of the wire, the wire located between the support bracket and the wire slot is bent downward to complete the wire connection.

2. An insulator for connecting a conductor according to claim 1, characterized in that: The metal tie is in the shape of an arc-shaped flat belt, which only binds the wire once, and has a plurality of convex parts on the inner side of the metal tie.

3. An insulator for connecting a conductor according to claim 2, characterized in that: The convex part is in the shape of dots or thorns.

4. An insulator for connecting a conductor according to claim 1, characterized in that: The metal tie comprises a plurality of strips arranged in parallel, each strip being fixedly connected between two ring buckles and only tying the wire once.

5. An insulator for connecting a conductor according to claim 2, characterized in that: A cushion block is fixedly connected above each ear button of the two ear button assemblies.

6. An insulator for connecting a conductor according to claim 1, characterized in that: The metal tie is in a line shape and is used to tie the wires together in multiple circles.

7. An insulator for connecting a conductor according to claim 1, characterized in that: The metal cable tie is a copper cable tie or a stainless steel cable tie.

8. An insulator for connecting a conductor according to claim 1, characterized in that: There are two support brackets, which are respectively arranged on two embracing units.

9. An insulator for connecting a conductor according to claim 1, characterized in that: There are four support brackets, and each ear buckle of the two ear buckle assemblies is provided with a support bracket.

10. An insulator for connecting a conductor according to claim 1, characterized in that: The inner arc surfaces of the two half rings are both matched with the neck portion of the insulating member.

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