An insulator convenient for connecting cross arm

Abstract

The present invention discloses an insulator that is convenient for connecting a cross arm, and relates to the technical field of insulators. The insulator comprises an insulating member, a steel foot fixedly connected to the bottom of the insulating member, and a mounting seat with a mounting hole. The steel foot is rotatably connected to the mounting seat through a hinge support. The axial direction of the hinge support is parallel to the wire groove at the top of the insulating member. A sleeve ring is provided on the hinge support for relative rotation along the axial direction of the insulating member. A first positioning ring and a second positioning ring are fixedly connected to the sleeve ring. When the insulating member is installed vertically, the first positioning ring is aligned with the mounting hole; when the insulating member is installed at an angle of α, the second positioning ring is aligned with the mounting hole. The present invention can change the installation angle of the insulating member through the hinge support, and the first positioning ring, the second positioning ring and the sleeve ring are provided to lock the insulating member in a vertical state or an inclined state, thereby broadening the application. In addition, the present invention can realize the connection between the mounting seat and the cross arm and the angle locking of the insulating member only through a set of bolt connection pairs, and the installation is very convenient and the connection is firm.

Description

Technical Field

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

[0002] The power transmission network needs to be continuously expanded and upgraded, which places higher demands on the performance and installation convenience of power equipment such as insulators to ensure efficient and stable power transmission. The installation convenience and firm connection between insulators and crossarms are very important.

[0003] The patent with announcement number CN209029170U discloses a new type of cross-arm mounted insulator, which includes an insulator body, a pressure plate and bolts. The upper surface of the upper flange is provided with raised bolt holes. The cross-arm has two Γ-shaped sides. A circular hole is opened on the horizontal side of the cross-arm, and the vertical side of the cross-arm is parallel to the central axis direction of the insulator. The bolts pass through the circular holes and are connected to the threaded holes.

[0004] The patent with announcement number CN218123080U discloses a pin insulator anti-tilt clamp installation structure, which includes a cross arm body, which is a straight bar structure composed of an upper panel and a side panel, and the upper panel has a vertical hole for installing the insulator, in which a bolt is installed, and a nut is installed on the bolt, and the nut is located below the upper panel, and also includes a stopper and a connecting part, the stopper is located below the nut, the stopper blocks the vertical movement path of the nut, and the connecting part is provided on the side panel of the cross arm body, and the connecting part is used to connect the stopper. It can effectively prevent the bolts and nuts used to fix the insulators in the power line from loosening.

[0005] In line construction, based on the requirements for laying conductors, the insulator in the middle of the crossarm is required to be installed vertically, while the insulators at both ends of the crossarm are required to be installed at a specific tilt angle. In the prior art of the above-mentioned patent, the insulating parts are connected to the crossarm by steel foot screws, which is not convenient for tilted installation. Summary of the invention

[0006] The object of the present invention is to provide an insulator which is convenient for connecting a cross arm, so as to solve the above-mentioned deficiencies in the prior art.

[0007] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an insulator that is convenient for connecting a crossarm, comprising an insulating member, a steel foot fixedly connected to the bottom of the insulating member, and a mounting seat with a mounting hole, wherein the steel foot is rotatably connected to the mounting seat through a hinge support, the axial direction of the hinge support is parallel to the wire groove at the top of the insulating member, a sleeve ring is provided on the hinge support for relative rotation along the axial direction of the insulating member, a first positioning ring and a second positioning ring are fixedly connected to the sleeve ring, when the insulating member is installed vertically, the first positioning ring is aligned with the mounting hole; when the insulating member is installed at an inclined angle α, the second positioning ring is aligned with the mounting hole.

[0008] Furthermore, the steel foot is fixedly connected to the hinge support, and the collar is rotatably connected to the steel foot along the axial direction of the insulating member.

[0009] Furthermore, the steel foot is rotatably connected to the hinge support along the axial direction of the insulating member, and the collar is fixedly connected to the steel foot.

[0010] Furthermore, the mounting seat is U-shaped and has a U-shaped space, the thickness of the U-shaped space is adapted to the thickness of the cross arm, and the depth of the U-shaped space is adapted to the width of the cross arm.

[0011] Furthermore, there are two mounting holes on the mounting base, and the two mounting holes are coaxially arranged on two mutually parallel panels of the U-shaped mounting base.

[0012] Furthermore, a limit plate located at the mouth of the U-shaped space is movably provided on the mounting seat, and the limit plate has a limit position for clamping the cross arm in the U-shaped space during its movable travel.

[0013] Furthermore, a slide groove is provided on the mounting seat, and the limit plate is slidably connected in the slide groove. The bottom of the limit plate away from the U-shaped space is provided with an inclined surface, and the top of the limit plate is provided with a block. The mounting seat is fixedly connected with a baffle for preventing the limit plate from escaping from the slide groove upward.

[0014] Furthermore, the first positioning ring and the second positioning ring are respectively connected to the sleeve ring through connecting rods.

[0015] Furthermore, a third positioning ring is fixedly connected to the sleeve ring. When the insulating member is installed at an inclined angle of β, the third positioning ring is aligned with the mounting hole. The angle β is greater than or less than the angle α.

[0016] Furthermore, when connecting the crossarm, the mounting seat is sleeved on the crossarm, and the mounting hole and the through hole on the crossarm are axially overlapped, a bolt passes through the mounting hole and the through hole, and the bolt passes through the first positioning ring or the second positioning ring and is screwed on with a nut.

[0017] In the above technical solution, the present invention provides an insulator that is convenient for connecting a cross arm. The angle of the insulating member relative to the mounting seat can be changed by a hinge support. The first positioning ring, the second positioning ring and the sleeve ring are provided to lock the insulating member in a vertical state or an inclined state, thereby broadening the use of the insulator. In addition, the present invention also brings another effect. The connection between the mounting seat and the cross arm and the angle locking of the insulating member can be achieved by only one set of bolt connection pairs. The installation is very convenient and the connection is firm. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 A schematic diagram of the connection structure between the cross arm connection fitting and the insulating member provided in the embodiment;

[0020] Figure 2 An exploded view of the structure of the cross arm connection fittings provided in the embodiment;

[0021] Figure 3 A schematic diagram of the connection structure between the first positioning ring, the second positioning ring and the sleeve ring provided in the embodiment;

[0022] Figure 4 A schematic diagram of the structure when the cross arm connecting fitting provided in the embodiment is vertically installed on the cross arm;

[0023] Figure 5 A schematic diagram of the structure of a cross arm connecting fitting provided in an embodiment when it is installed obliquely on the cross arm;

[0024] Figure 6 A schematic structural diagram of a cross arm connection fitting provided in another embodiment;

[0025] Figure 7 An exploded view of the structure of a cross arm connection fitting provided in another embodiment;

[0026] Figure 8 A schematic diagram of the connection structure between the cross arm connection fittings, the wire connection fittings, the insulating member and the wire provided in the embodiment;

[0027] Fig. 9 A schematic diagram of the connection structure between the first positioning ring, the second positioning ring, the third positioning ring and the sleeve ring provided in the embodiment;

[0028] Fig.10 Parts diagram of the wire connection fittings provided in the embodiment;

[0029] Fig.11 A front view of the structure when in use provided by the embodiment;

[0030] Fig.12 This is a schematic diagram of the structure when used in the embodiment.

[0031] Description of reference numerals:

[0032] 100. Cross arm connection hardware; 101. Mounting seat; 102. Mounting hole; 103. Hinge support; 104. Limiting plate; 105. Inclined surface; 106. Block; 107. Block bar; 108. Ring; 109. First positioning ring; 110. Second positioning ring; 111. Third positioning ring; 112. Connecting rod; 113. Locking bolt; 114. Locking nut; 115. Washer; 116. Steel foot; 200. Wire connection hardware; 202. Half ring; 203. Ear buckle; 204. Through hole; 205. Support bracket; 206. Metal cable tie; 207. Ring buckle; 208. Hook-shaped structure; 209. Fastening bolt; 210. Fastening nut; 300. Insulating member; 301. Wire duct; 302. Shrink neck; 400. Cross arm; 500. Wire. DETAILED DESCRIPTION

[0033] 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.

[0034] See also Figure 1-Figure 12 An embodiment of the present invention provides an insulator that is convenient for connecting a cross arm, including an insulating member 300 and a cross arm connecting fitting 100 and a wire connecting fitting 200 located at both ends of the insulating member 300.

[0035] Embodiment 1

[0036] See also Figure 1-Figure 5 The cross arm connection fitting 100 includes a steel foot 116, a mounting seat 101, a hinge support 103, a collar 108, a first positioning ring 109, a second positioning ring 110 and a set of bolt connection pairs, wherein the mounting seat 101 is U-shaped, having a U-shaped space, the thickness of the U-shaped space is adapted to the thickness of the cross arm 400, the depth of the U-shaped space is adapted to the width of the cross arm 400, and there are two mounting holes 102 on the mounting seat 101, and the two mounting holes 102 are coaxially arranged on two mutually parallel panels of the U-shaped mounting seat 101 A slide groove is provided on the mounting seat 101, and a limit plate 104 is provided in the slide groove for sliding up and down. The limit plate 104 is located at the mouth of the U-shaped space, and a slope 105 is provided at the bottom of the limit plate 104 away from the U-shaped space. A stopper 106 is provided on the top of the limit plate 104. The stopper 106 is used to prevent the limit plate 104 from falling off the slide groove when the limit plate 104 slides downward. A stopper 107 is fixedly connected to the mounting seat 101, and the stopper 107 is used to prevent the limit plate 104 from completely sliding out of the slide groove when the limit plate 104 slides upward.

[0037] The steel foot 116 is fixedly connected to the bottom of the insulating member 300, and a mounting hole 102 is provided on the mounting seat 101. The steel foot 116 is fixedly connected to the hinge support 103. The hinge support 103 and the mounting seat 101 are rotationally connected along a horizontal axis, and the horizontal axis is parallel to the axial direction of the wire groove 301 at the top of the insulating member 300, that is, perpendicular to the length direction of the cross arm 400. The ring 108 is rotationally connected to the steel foot 116 along the axial direction of the insulating member 300. The first positioning ring 109 and the second positioning ring 110 are respectively fixedly connected to the ring sleeve by a connecting rod 112. By rotating the ring sleeve, the first positioning ring 109 and the second positioning ring 110 can be driven to rotate together.

[0038] When connecting the cross arm 400, first put the U-shaped mounting seat 101 on the horizontal part of the cross arm 400, so that the mounting seat 101 is pre-fixed with the cross arm 400 in the vertical direction. During the installation of the mounting seat 101, the inclined surface 105 of the limiting plate 104 slides and abuts against the horizontal side edge of the cross arm 400 and is pushed upward. When the mounting seat 101 is put into place, the lower panel of the mounting seat 101 abuts against the inner side of the vertical part of the cross arm 400, and the limiting plate 104 is no longer restricted by the horizontal part of the cross arm 400 and can slide downward. Therefore, the limiting plate 104 can abut against the outer side of the vertical part of the cross arm 400, clamping the cross arm 400 in the U-shaped space, thereby pre-fixing the mounting seat 101 in the width direction of the cross arm 400, and adjusting the mounting seat 101 along the length direction of the cross arm 400 so that the mounting hole 102 on the mounting seat 101 overlaps with the through hole 204 on the cross arm 400 in the vertical direction.

[0039] See also Figure 4 When the insulating member 300 needs to be installed vertically, the ring 108 is rotated while the insulating member 300 is kept vertical so that the axis of the first positioning ring 109 coincides with the axis of the mounting hole 102, and then the locking bolt 113 is passed through the mounting hole 102, the through hole 204 and the first positioning ring 109 and then threadedly connected with the locking nut 114. Washers 115 are installed on the inner sides of the locking nut 114 and the locking nut. Tighten the locking nut 114 to complete the vertical installation. Figure 5When the insulating member 300 needs to be installed at an angle α relative to the horizontal plane, the angle α is usually between 50° and 70°, and theoretically between 0° and 90°. While the insulating member 300 remains vertical, the collar 108 is rotated to make the second positioning ring 110 face the mounting hole 102, and then the insulating member 300 is rotated until the end face of the second positioning ring 110 abuts against the upper surface of the mounting seat 101. At this time, the insulating member 300 is tilted to the angle α, and the axis of the second positioning ring 110 and the axis of the mounting hole 102 are also coincident. The locking bolt 113 is passed through the mounting hole 102, the through hole 204 and the second positioning ring 110, and then threadedly connected with the locking nut 114. Washers 115 are installed on the inner sides of the locking nut 114 and the locking nut. Tighten the locking nut 114 to complete the tilted installation. After the locking nut 114 is tightened, three effects are achieved simultaneously: locking between the mounting seat 101 and the cross arm 400, locking between the collar 108 and the steel foot 116, and locking between the hinge support 103 and the mounting seat 101. The installation is simple and convenient, and the connection is firm.

[0040] Embodiment 2

[0041] See also Figure 6-Figure 7 The cross arm connection fitting 100 includes a steel foot 116, a mounting seat 101, a hinge support 103, a collar 108, a first positioning ring 109, a second positioning ring 110 and a group of bolt connection pairs, wherein the steel foot 116 is fixedly connected to the bottom of the insulating member 300, the steel foot 116 and the hinge support 103 are rotationally connected along the axis of the insulating member 300, the hinge support 103 and the mounting seat 101 are rotationally connected along a horizontal axis parallel to the wire groove 301, the collar 108 is fixedly connected to the steel foot 116, the first positioning ring 109 and the second positioning ring 110 are respectively fixedly connected to the ring sleeve, and the first positioning ring 109 and the second positioning ring 110 are distributed 180° on the ring sleeve, and the connecting line between the first positioning ring 109 and the second positioning ring 110 is perpendicular to the axial direction of the wire groove 301 of the insulating member 300.

[0042] When connecting the cross arm 400, firstly, the U-shaped mounting seat 101 is sleeved onto the cross arm 400, and the mounting hole 102 on the mounting seat 101 coincides with the through hole 204 on the cross arm 400 in the vertical direction; when the insulating member 300 needs to be installed vertically, while the insulating member 300 is kept vertical, the insulating member 300 is rotated along the axis of the insulating member 300 so that the axis of the first positioning ring 109 coincides with the axis of the mounting hole 102, and then the locking bolt 113 is passed through the mounting hole 102, the through hole 204 and the first positioning ring 109 and then threadedly connected with the locking nut 114, and the locking nut 114 is tightened to complete the vertical installation; when the insulating member 300 needs to be relatively When installing at an angle of α on a horizontal plane, the insulating member 300 is kept vertically, and the insulating member 300 is rotated along the axis of the insulating member 300 so that the second positioning ring 110 faces the mounting hole 102, and then the insulating member 300 is rotated along the horizontal axis until the end face of the second positioning ring 110 abuts against the upper surface of the mounting seat 101. At this time, the insulating member 300 is tilted to an angle of α, and the axis of the second positioning ring 110 and the axis of the mounting hole 102 are also coincident. The locking bolt 113 is passed through the mounting hole 102, the through hole 204 and the second positioning ring 110, and then threadedly connected with the locking nut 114. The locking nut 114 is tightened to complete the tilted installation. After the locking nut 114 is tightened, the three effects of locking between the mounting seat 101 and the cross arm 400, locking between the collar 108 and the steel foot 116, and locking between the hinge support 103 and the mounting seat 101 are achieved at the same time. The installation is simple and convenient, and the connection is firm.

[0043] Compared with the first embodiment, the second embodiment has an additional effect, that is, when the insulating member 300 is installed at an angle, the operator only needs to hold the insulating member 300 to complete the rotation adjustment of the insulating member 300 along the vertical axis and the angle adjustment along the horizontal axis, and the operation is more convenient and quick.

[0044] Embodiment 3

[0045] See also Figure 8-Figure 9 On the basis of the first embodiment, the collar 108 is further fixedly connected with a third positioning ring 111. When the insulating member 300 is installed at an angle of β, the third positioning ring 111 is aligned with the mounting hole 102. The angle β is greater than or less than the angle α, and is also theoretically between 0° and 90°. In this embodiment, the insulating member 300 has two angles of inclined installation on the basis of adapting to vertical installation, so as to meet more angle installation requirements in some special environments.

[0046] See also Figure 8 , Fig.10The wire connection fitting 200 in the present invention is used to connect the wire 500 to the insulating part 300 of the umbrella-shaped porcelain body. The wire connection fitting 200 includes two mateable embracing units and two copper or stainless steel metal ties 206. The two ends of the metal ties 206 are respectively provided with a buckle 207 and a hook-shaped structure 208. The embracing unit includes a semi-ring 202 and ear buckles 203 fixedly connected to the two ends of the semi-ring 202. The ear buckles 203 are provided with through holes 204. When the semi-rings 202 of the two embracing units are embraced to the neck portion 302 of the insulating part 300, the ear buckles 203 of the two embracing units are aligned with each other. A support bracket 205 for supporting the wire 500 is fixedly connected to one of the two aligned ear buckles 203. The upper surface of the support bracket 205 is flush with the bottom of the wire trough 301.

[0047] After the insulating member 300 is installed on the cross arm 400 through the cross arm connecting hardware 100, the wire 500 is stuck in the wire groove 301 of the insulating member 300 and is tightened by the tensioner device. When operating the wire connecting hardware 200, firstly, two metal tie bands 206 are sleeved and tied to the wires 500 on both sides of the insulating member 300, and then the two clasping units are placed on the neck portion 302 of the insulating member 300, and the ears of the two clasping units are respectively tightened by the hook-shaped structures 208 of the two metal tie bands 206. The buckle 203 is hooked, and the two ring buckles 207 are located between the two ear buckles 203. The through holes 204 of the two mutually aligned ear buckles 203 coincide with the axis of the ring buckle 207 on the corresponding metal tie 206, so that the embracing unit, the metal tie 206, the insulating member 300 and the wire 500 form a mutually restrained pre-connection, so that the fastening bolt 209 can be quickly passed through the aligned ear buckles 203 and the ring buckle 207 at one time, which is more convenient and quick to operate and install. During the process of tightening the bolt 209, there is no need to manually position the metal tie 206 and the two engaging units and maintain them all the time. Tightening the tightening nut 210 brings the two engaging units closer to each other. On the one hand, the two half rings 202 tighten the neck 302. On the other hand, the two approaching ear buckles 203 make the metal tie 206 gradually bend and wrap the wire 500. At the same time, the metal tie 206 tightens and binds the wire 500. In addition, due to the support of the wire trough 301 at the top of the insulating part 300 and the support bracket 205 on the ear buckle 203 on the bottom of the wire 500, after the metal tie 206 is tightened, the wire 500 located between the wire trough 301 and the support bracket 205 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. Through a bolt connection pair, the locking between the engaging unit and the insulating part 300 and the locking between the metal tie 206 and the wire 500 can be achieved at the same time, and the connection is convenient and secure.

[0048] 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 convenient for connecting a cross arm, comprising an insulating member, a steel foot fixedly connected to the bottom of the insulating member, and a mounting seat with a mounting hole, characterized in that: The steel foot is rotatably connected to the mounting seat via a hinge support, and the axial direction of the hinge support is parallel to the wire groove on the top of the insulating member; A collar is provided on the hinge support for relative rotation along the axial direction of the insulating member, and a first positioning ring and a second positioning ring are fixedly connected to the collar; When the insulating member is installed vertically, the first positioning ring and the mounting hole are coaxial; when the insulating member is installed at an inclined angle α, the second positioning ring and the mounting hole are coaxial.

2. An insulator for convenient connection of a cross arm according to claim 1, characterized in that: The steel foot is fixedly connected to the hinge support, and the collar is rotatably connected to the steel foot along the axial direction of the insulating member.

3. An insulator for convenient connection of a cross arm according to claim 1, characterized in that: The steel foot is rotatably connected to the hinge support along the axial direction of the insulating member, and the sleeve ring is fixedly connected to the steel foot.

4. An insulator for convenient connection of a cross arm according to claim 1, characterized in that: The mounting seat is U-shaped and has a U-shaped space. The thickness of the U-shaped space matches the thickness of the cross arm, and the depth of the U-shaped space matches the width of the cross arm.

5. An insulator for convenient connection of a cross arm according to claim 4, characterized in that: There are two mounting holes on the mounting seat, and the two mounting holes are coaxially arranged on two mutually parallel panels of the U-shaped mounting seat.

6. An insulator for convenient connection of a cross arm according to claim 4, characterized in that: A limiting plate located at the mouth of the U-shaped space is movably arranged on the mounting seat, and a limiting position for clamping the cross arm in the U-shaped space is provided during the movement of the limiting plate.

7. An insulator for convenient connection of a cross arm according to claim 6, characterized in that: The mounting seat is provided with a slide groove, the limit plate is slidably connected in the slide groove, the bottom of the limit plate away from the U-shaped space is provided with an inclined surface, the top of the limit plate is provided with a stopper, and the mounting seat is fixedly connected with a stop bar for preventing the limit plate from upwardly escaping from the slide groove.

8. An insulator for convenient connection of a cross arm according to claim 1, characterized in that: The first positioning ring and the second positioning ring are respectively connected to the sleeve ring through connecting rods.

9. An insulator for convenient connection of a cross arm according to claim 2, characterized in that: The sleeve ring is also fixedly connected with a third positioning ring. When the insulating member is installed at an inclined angle of β, the third positioning ring coincides with the mounting hole. The angle β is greater than or less than the angle α.

10. An insulator convenient for connecting a cross arm according to claim 1, characterized in that: When connecting the crossarm, the mounting seat is sleeved on the crossarm, and the mounting hole and the through hole on the crossarm are axially overlapped. A bolt passes through the mounting hole and the through hole, and the bolt passes through the first positioning ring or the second positioning ring and is screwed on with a nut.

Images