Insulator convenient for wire connection

Abstract

The invention discloses an insulator convenient for wire connection, and relates to the technical field of insulators, the insulator comprises an insulating part and a wire connection fitting, the wire connection fitting comprises two cohesion units and two metal ribbons, two ends of each metal ribbon are respectively provided with a buckle and a hook-shaped structure, each cohesion unit comprises a semi-ring, and the semi-ring is provided with a hook-shaped structure. The two ends of each semi-ring are fixedly connected with ear clips with through holes respectively, the two ear clips at the aligned ends of the two cohesion units form an ear clip combination, at least one ear clip in each ear clip combination is provided with a supporting bracket used for supporting a wire, and after each metal cable tie is arranged on the wire in a wire groove of the insulating part in a sleeving mode, the metal cable tie is connected with the corresponding metal cable tie in a sleeving mode. The two hook-shaped structures are hooked and sleeved on the two ear clips of the corresponding ear clip combination in a one-to-one correspondence manner so as to pre-connect a lead, and a fastening nut penetrates through the two overlapped ring buckles and the two through holes and then is screwed with the fastening nut, so that the two semi-rings tighten the neck part; and the metal cable ties bind the wires and enable the wires between the support and the wire slots to bend downwards to complete wire connection.

Description

Technical Field

[0001] The invention relates to the technical field of insulators, in particular to an insulator which is convenient for connecting wires. Background Art

[0002] The power transmission network needs to be continuously expanded and upgraded, which places 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 between insulators and conductors: binding and wire clamping.

[0003] The binding method is to first use aluminum tape to wrap along the winding direction of the aluminum stranded wire. The exposed length of the winding is 30mm to protect the wire from being worn, leaving a short head of about 150mm. Bind 3 circles from bottom to top on the wire on the left side of the insulator, then wrap it from the outside of the insulator neck to the wire on the right side, and then bind 3 circles from bottom to top, repeat this process, and finally form a cross at the top, twist 3-4 flowers at both ends of the aluminum binding wire, cut it off and flatten it.

[0004] The wire clamp in the wire clamp method is fixedly connected to the top of the insulator body, and is composed of the wire clamp body, bolts, nuts and other parts. Put the wire into the wire groove of the wire clamp, and tighten the bolts so that the clamp's pressure plate presses the wire to fix it on the insulator. Bolt-type wire clamps are suitable for wires of different cross-sections. Their advantages are easy installation and reliable connection. The corresponding type of wire clamp can be selected according to the wire specifications. During installation, ensure that the bolt tightening torque meets the requirements to prevent loosening or over-tightening that may damage the wire.

[0005] For the insulating parts of umbrella-shaped porcelain bodies, the tops of them cannot be directly connected to wire clamps, so the wires are usually fixed by binding. However, the binding method is more complicated, takes a long time, has lower working efficiency, and is less firm than the wire clamp method. Summary of the invention

[0006] The object of the present invention is to provide an insulator which is convenient for connecting a conductor, so as to solve the problem of low efficiency and firmness of the connection operation between the insulator and the conductor in the above-mentioned prior art.

[0007] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an insulator for connecting a wire, comprising an insulating member and a wire connecting hardware for connecting the insulating member and the wire, the wire connecting hardware comprising two embracing units and two metal straps, each metal strap having a ring buckle and a hook-shaped structure at both ends, each embracing unit comprising a half ring, and ear buckles with through holes are fixedly connected at both ends of the half ring, when the half rings of the two embracing units are embracing the neck of the insulating member, the two ear buckles at the aligned ends of the two embracing units form an ear buckle combination, and the two metal straps are respectively provided with a ring buckle and a hook-shaped structure at both ends, and each embracing unit comprises a half ring, and the two ends of the half ring are respectively provided with ear buckles with through holes, and when the half rings of the two embracing units are embracing the neck of the insulating member, the two ear buckles at the aligned ends of the two embracing units form an ear buckle combination, and the two metal straps are respectively provided with a ring buckle and a hook-shaped structure at both ends, and the two ends of the half ring ... The cable tie is arranged in one-to-one correspondence with the two ear buckle assemblies, and at least one ear buckle in each ear buckle assembly is provided with a support bracket for supporting the wire. After each metal cable tie is put on the wire in the wire slot of the insulating member, its two hook-shaped structures are hooked on the two ear buckles of the corresponding ear buckle assembly in one-to-one correspondence 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 cable tie binds the wire tightly and causes the wire between the support bracket and the wire slot to bend downward to complete the wire connection.

[0008] Furthermore, the metal tie is in the shape of an arc-shaped flat belt, which only binds the wire in one circle, and the inner side of the metal tie has a plurality of protrusions.

[0009] Furthermore, the convex portion is in the shape of dots or thorns.

[0010] Furthermore, 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.

[0011] Furthermore, a pad is fixedly connected above each ear button of the two ear button assemblies.

[0012] Furthermore, the metal tie is in a linear shape and is used to tie the wires together in multiple turns.

[0013] Furthermore, the metal cable tie is a copper cable tie or a stainless steel cable tie.

[0014] Furthermore, there are two support brackets, which are respectively arranged on the two embracing units.

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

[0016] Furthermore, the inner arc surfaces of the two half rings are both matched with the neck portion of the insulating member.

[0017] In the above technical scheme, the present invention provides an insulator that is convenient for connecting wires. When connecting the wires, two metal ties are first sleeved onto the wires on both sides of the insulating member, and then the two embracing units are placed in a matched manner on the neck portion of the insulating member. The hook-shaped structures of the two metal ties respectively sleeve the ear buckle combination hooks of the two embracing units, and the axis of the through holes of the same group of ear buckles and the axis of the corresponding ring buckles on the metal ties coincide with each other, thereby forming a pre-connection between the embracing units, the metal ties, the insulating member and the wires. Then, the fastening bolts are passed through the through holes of the same group of ear buckles and the two ring buckles on the corresponding metal ties, and the fastening nuts are tightened to tighten the necks of the two half ring buckles, while the metal ties are tightened to bind the wires. Moreover, since the wire trough at the top of the insulating member and the support bracket on the ear buckle support the bottom of the wire, after the metal ties are tightened, the wire located between the wire trough and the support bracket is slightly bent downward, so that the connection between the wire and the insulating member is more secure, especially the wire is not prone to loosening and displacement along its length.

[0018] In the present invention, temporary fixation of the two engaging units is achieved through the pre-connection cooperation between the metal tie and the engaging unit, and the through holes of the same group of ear buckles and the corresponding ring buckles of the metal tie are also overlapped together, so that the fastening bolts can be quickly passed through the ear buckles and the ring buckles at one time, which makes the operation more convenient and quick. During the installation of the fastening bolts, there is no need to manually position the metal tie and the two engaging units and maintain them all the time; and by tightening the fastening nut, the locking between the engaging unit and the insulating part and the locking between the metal tie and the wire can be achieved simultaneously, thereby achieving the effect of connecting and fixing the wire and the insulating part, while having a very high connection firmness, further improving the convenience of the connection operation, and improving the working efficiency of connecting the wire to the insulating part. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly describe the embodiments of the present application or the technical solutions in the prior art, the drawings required to be used in the embodiments are briefly introduced below.

[0020] Figure 1 A schematic diagram of the connection structure between the insulating member, the wire and the wire connecting fitting provided in the embodiment; Figure 2 A schematic diagram of the structure of a wire connection fitting provided in an embodiment; Figure 3 A schematic diagram of the pre-assembly structure of the insulating member, the wire and the wire connecting fittings provided in the embodiment; Figure 4 A schematic diagram of the structure of the metal tie and the embracing unit pre-connected in the embodiment; Figure 5 A schematic diagram of a connection structure between an insulating member, a wire and a wire connection fitting provided in another embodiment; Figure 6A schematic diagram of the structure of a metal cable tie provided in an embodiment Figure I ; Figure 7 A schematic diagram of the structure of a metal cable tie provided in an embodiment Figure II ; Figure 8 A schematic diagram of the structure of a metal cable tie provided in an embodiment Figure III ; Fig. 9 A schematic diagram of the structure of a metal cable tie provided in an embodiment Figure IV ; Fig.10 A schematic diagram of the structure when in use provided by the embodiment; Fig.11 for Fig.10 A magnified view of the structure at center A; Fig.12 for Fig.10 A magnified view of the structure at point B.

[0021] Description of reference numerals: 100. Wire connection fittings; 101. Clamping unit; 102. Half ring; 103. Ear buckle; 104. Through hole; 105. Support bracket; 106. Metal tie; 107. Buckle; 108. Hook-shaped structure; 109. Fastening bolt; 110. Fastening nut; 111. Spacer; 112. Protrusion; 200. Cross arm connection fittings; 201. Mounting seat; 202. Steel foot; 203. Hinge support; 204. Ring; 205. First positioning ring; 206. Second positioning ring; 207. Locking bolt; 208. Locking nut; 300. Insulating member; 400. Cross arm; 500. Wire. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-Figure 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 two 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 300 in the shape of an umbrella skirt porcelain body. The wire connection fitting 100 includes two engaging units 101 capable of being joined together 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 respectively have 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 on the earring 103. When the semi-rings 102 of the two engaging units 101 are joined around 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. Thus, 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 away 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.

[0024] The insulating member 300 is pre-installed on the cross arm 400 through the cross arm connecting hardware 200, and the wire 500 tensioned by the tensioner device is stuck in the wire groove at the top of the insulating member 300. When fastening the wire 500 and the insulating member 300, firstly, two metal tie bands 106 are sleeved on the wire 500 on both sides of the insulating member 300, and then the two embracing units 101 are placed on the neck of the insulating member 300. At this time, the two embracing units 101 are not fastened, and they will slide off the insulating member 300 once they are loosened. Therefore, the ear buckles 103 of the two embracing units 101 need to be hooked by the hook-shaped structures 108 of the two metal tie bands 106, and the two ring buckles 107 are located between the two ear buckles 103. The axis of the through hole 104 of the same group of ear buckles 103 and the axis of the ring buckle 107 on the corresponding metal tie band 106 coincide with each other, thereby forming the embracing unit 101 and the metal tie band 101. 06. Pre-connection between the insulating part 300 and the wire 500; then pass the fastening bolt 109 through the through hole 104 of the same group of ear buckles 103 and the two ring buckles 107 on the corresponding metal tie 106, and tighten the fastening nut 110 to bring the two engaging units 101 closer to each other, so that the two half rings 102 tighten the neck on the one hand, and on the other hand, the two close ear buckles 103 make the metal tie 106 gradually bend and wrap the wire 500, so that the metal tie 106 is tightened to bind the wire 500, and because the wire trough at the top of the insulating part 300 and the support bracket 105 on the ear buckle 103 support the bottom of the wire 500, after the metal tie 106 is tightened, the wire 500 located between the wire trough and the support bracket 105 is slightly bent downward, so that the connection between the wire 500 and the insulating part 300 is more secure, especially the wire 500 is not easy to loosen and deviate along its length.

[0025] In order to improve the firmness of the metal tie 106 for binding the wire 500, the present invention designs the following types of metal tie 106. Figure 1-Figure 4 , Figure 6 In the first embodiment, the metal tie 106 is in the shape of an arc-shaped flat belt, which only binds the wire 500 once. The inner middle part of the metal tie 106 has a plurality of tiny protrusions 112, which are dot-shaped or thorn-shaped. After the metal tie 106 is put on the wire 500 from top to bottom, the metal tie 106 is tightened in the subsequent process of locking by the bolt connection pair, so that the protrusion 112 in the inner middle part of the metal tie 106 is inserted into the wire 500, and the connection between the metal tie 106 and the wire 500 is more secure, and the wire 500 is not easy to loosen and deviate in the length direction. If the wire 500 is a bare wire, a thorn-shaped protrusion 112 is selected, which can directly and slightly penetrate into the wire 500; if the wire 500 is a sheathed wire, a dot-shaped protrusion 112 is selected, which can be pressed into the outer skin of the wire 500 without piercing and damaging the outer skin.

[0026] See also Figure 1 , Figure 7 In the second embodiment, the metal tie 106 includes a plurality of strips arranged in parallel, each of which is fixedly connected between two ring buckles 107 and only ties the wire 500 once. After the metal tie 106 is put on the wire 500 from top to bottom, the metal tie 106 is tightened in the subsequent process of being locked by the bolt connection pair. The huge pressure exerted by each strip on the wire 500 will cause the surface of the wire 500 to be slightly concave, while the wire 500 in the gap between each strip will not be squeezed, but slightly convex into the gap, so that the connection between the metal tie 106 and the wire 500 is more secure, and the wire 500 is not easy to loosen or deviate in the length direction.

[0027] In the above two embodiments, see Figure 2 A pad 111 is provided on the top of the ear buckle 103, and the pad 111 is welded to the ear buckle 103 or the pad 111 and the ear buckle 103 are integrally formed. When the metal tie 106 is tightened, the pad 111 can make the metal tie 106 wrap more of the bottom of the wire 500, thereby better binding the wire 500.

[0028] See also Figure 5 , Figure 8-Figure 9 In the third embodiment, the metal tie 106 is in a linear shape and is used to tie the wire 500 two to three times. Of course, in theory, more circles can be used. Compared with the metal tie 106 in the first two embodiments, the metal tie 106 in this embodiment is more secure in tying the wire 500, and the wire 500 is not prone to axial loosening and displacement.

[0029] There are also various specific ways to set the support support 105. The first is that there are two support supports 105, which are distributed in two ear button 103 combinations and are respectively set on two engaging units 101; the second is that there are two support supports 105, which are distributed in two ear button 103 combinations, but are set on the same engaging unit 101; the third is that there are four support supports 105, and each ear button 103 of the two ear button 103 combinations is provided with a support support 105, and the two support supports 105 in the same ear button 103 combination are staggered in the length direction of the wire 500.

[0030] In the present invention, the temporary fixation of the two engaging units 101 is achieved through the pre-connection cooperation between the metal tie 106 and the engaging unit 101, and the through hole 104 of the same group of ear buckles 103 and the corresponding ring buckle 107 of the metal tie 106 also overlap together, so that the fastening bolt 109 can be quickly passed through the ear buckle 103 and the ring buckle 107 at one time, and the operation is more convenient and quick. During the installation of the fastening bolt 109, there is no need to manually position the metal tie 106 and the two engaging units 101 and maintain them all the time; and tightening the fastening nut 110 can simultaneously realize the locking between the engaging unit 101 and the insulating member 300 and the locking between the metal tie 106 and the wire 500, thereby achieving the effect of connecting and fixing the wire 500 to the insulating member 300, while having a very high connection firmness, further improving the convenience of the connection operation, and improving the working efficiency of connecting the wire 500 to the insulating member 300.

[0031] See also Figure 10-12 The crossarm connecting fitting 200 is used to connect the insulating member 300 and the crossarm 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 group of bolt connection pairs. The steel foot 202 is fixedly connected to the bottom of the insulating member 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 member 300. The first positioning ring 205 and the second positioning ring 206 are respectively fixedly connected to the ring sleeve by a connecting rod. By rotating the ring sleeve, the first positioning ring 205 and the second positioning ring 206 can be driven to rotate together.

[0032] When connecting the cross arm 400, first sleeve the U-shaped mounting seat 201 onto the cross arm 400 so that the mounting hole on the mounting seat 201 coincides with the through hole 104 on the cross arm 400, and rotate the collar 204 while the insulating member 300 remains 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 threadably connect 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 member 300 is completed. Fig.11 When the second positioning ring 206 faces the mounting hole, the insulating member 300 is rotated along the horizontal axis until the end surface of the second positioning ring 206 abuts against the upper surface of the mounting seat 201, and the axis of the second positioning ring 206 coincides with the axis of the mounting hole. The locking bolt 207 is passed through the mounting hole, the through hole 104 and the second positioning ring 206 and then threadedly connected with the locking nut 208. The locking nut 208 is tightened, and the insulating member 300 is installed obliquely, such as Fig.12After the locking 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. The installation is simple and convenient, and the connection is firm.

[0033] The above describes some exemplary embodiments of the present invention, which should not be understood as limiting the scope of protection of the claims of the present invention. For those skilled in the art, the described embodiments can be modified in other different ways without departing from the spirit and scope of the present invention.

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 and makes the wire between the support bracket and the wire slot bend 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.

Images