阅读说明：本技术 免销式输电线路专用联接金具 (Pin-free special connection hardware fitting for power transmission line ) 是由 何林轩 于 2021-09-24 设计创作，主要内容包括：本发明提供了一种免销式输电线路专用联接金具,属于电力工程技术领域,包括第一连接件、卡装块体、以及卡装插销,卡装插销的端部设置有十字球头,卡装块体上还设置有用于容纳十字球头的容纳腔体,卡装块体的侧面上还设置有用于十字球头进入容纳腔体内部的十字插孔,卡装块体远离第一连接件的一端还设置有容纳孔,容纳孔与十字插孔之间还设置有让位通道。本发明提供的免销式输电线路专用联接金具解决现有碗头挂板存在的因弹簧插销结构不合理而导致球头挂环的球头易从碗头挂板中脱出的缺陷。结构简单、拆装和更换方便、防脱效果好的优点,其适用范围广,尤其适用于1000千伏-10千伏高低压输电线路、配网、变电站及高速铁路等用于碗头与球头专用联接。(The invention provides a pin-free special connecting fitting for a power transmission line, which belongs to the technical field of electric power engineering and comprises a first connecting piece, a clamping block body and a clamping bolt, wherein a cross ball head is arranged at the end part of the clamping bolt, an accommodating cavity for accommodating the cross ball head is also arranged on the clamping block body, a cross jack for the cross ball head to enter the accommodating cavity is also arranged on the side surface of the clamping block body, an accommodating hole is also formed in one end, far away from the first connecting piece, of the clamping block body, and a abdicating channel is also arranged between the accommodating hole and the cross jack. The special connecting hardware fitting for the pin-free power transmission line provided by the invention solves the defect that the ball head of the ball head hanging ring is easy to fall off from the socket hanging plate due to the unreasonable structure of the spring bolt in the existing socket hanging plate. The socket has the advantages of simple structure, convenient disassembly and replacement, good anti-drop effect and wide application range, and is particularly suitable for the special connection of the socket and the bulb for 1000 KV-10 KV high-low voltage transmission lines, distribution networks, transformer substations, high-speed railways and the like.)

1. The utility model provides a special hookup gold utensil of round pin formula transmission line exempts from, its characterized in that includes first connecting piece, sets up first connecting piece tip department clamp the block and be used for with clamp the block and dismantle the bolt that clamps of connecting, the tip that clamps the bolt is provided with the cross bulb, it still is provided with on the block to clamp and is used for holding the cavity that holds of cross bulb, still be provided with on the side that clamps the block and be used for the cross bulb gets into hold the inside cross jack of cavity, the block that clamps is kept away from the one end of first connecting piece still be provided with be used for with hold the cavity and the accommodation hole that clamps the outside intercommunication of block, still be provided with between accommodation hole and the cross jack and be used for clamping the passageway of stepping down that passes through when the bolt rotates.

2. The pin-free type connecting fitting special for the power transmission line according to claim 1, wherein the accommodating cavity is ellipsoidal, the accommodating hole and the first connector are respectively located at two end portions of the clamping block body in the direction of the long axis of the accommodating cavity, and the cross-shaped jack is located at the side surface of the accommodating cavity.

3. The pin-free special connecting fitting for the power transmission line according to claim 2, wherein a plurality of positioning grooves for preventing the cross ball head and the inner wall of the clamping block body from being worn are further arranged on the inner wall of the accommodating cavity, and the positioning grooves are all arranged in the accommodating cavity and close to the accommodating hole.

4. The pin-free special connection fitting for the power transmission line according to claim 3, wherein the plurality of positioning grooves are arranged around a long axis of the accommodating cavity, the plurality of positioning grooves are arranged at intervals, and one of the plurality of positioning grooves is arranged opposite to the cross-shaped jack.

5. The pin-free special connection fitting for the power transmission line according to claim 3, wherein the positioning groove is further provided with anti-slip lines for preventing the cross ball head from sliding with the accommodating cavity.

6. The pin-free type connecting fitting special for the power transmission line according to claim 2, wherein the clamping block body is cylindrical, and an axis of the clamping block body is overlapped with a long axis of the accommodating cavity.

7. The pin-free special connection fitting for the power transmission line according to claim 1, wherein a rotation connection assembly for fixing the clamping bolt on the cross arm is further arranged at the other end of the clamping bolt.

8. The pin-free link fitting special for the power transmission line according to claim 7, wherein the rotating connector comprises a ball head ring arranged at the end of the clamping bolt and a U-shaped bracket for accommodating the ball head ring, and the ball head ring is rotatably arranged inside the U-shaped bracket through a fastener.

9. The pin-free type connecting fitting special for the power transmission line according to claim 8, wherein the ball head ring and the clamping bolt are integrally formed, and the cross ball head and the clamping bolt are also integrally formed.

10. The pin-free special connection fitting for the power transmission line according to claim 1, wherein the cross ball head comprises a first disc body and a second disc body which is intersected with the first disc body and is vertically arranged, and an axis of the clamping bolt is arranged in parallel to an intersecting axis of the first disc body and the second disc body.

Technical Field

The invention belongs to the technical field of electric power engineering, and particularly relates to a pin-free special connection hardware fitting for a power transmission line.

Background

At present, in the installation process of a power transmission line, a connecting hardware fitting is needed to be used between an insulator and a tower crosspiece on the power transmission line. The connecting hardware fitting is a metal accessory which is used for connecting and combining various devices in an electric power system and plays a role in transmitting mechanical loads, electrical loads and certain protection. However, the existing electric power connection hardware fitting mainly comprises a U-shaped bolt, a ball head hanging ring, an insulator bowl head and an M-shaped limit pin arranged in the insulator bowl head. When the connecting fitting is used, the hanging ring is connected with a tower crosspiece through a bolt, the ball head and the M-shaped limiting pin of the insulator are impacted and rubbed under the action of wind load, the influence of unbalanced external force is generated, the phenomena of withdrawal, loss and the like of the limiting M pin between the insulators or at the connecting part of the limiting M pin and the bowl head are caused due to the reduction of ageing elasticity, the phenomenon that the insulator string falls off is caused, and the safety of a power transmission line is seriously influenced.

Disclosure of Invention

The invention aims to provide a pin-free special connection fitting for a power transmission line, and aims to solve the problem that a limiting part is easy to age to cause poor safety performance in the connection fitting in the prior art.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a special hookup gold utensil of round pin formula transmission line exempts from, be in including first connecting piece, setting first connecting piece tip department clamp the block and be used for with the bolt that clamps that the block dismantlement of clamping is connected, the tip that clamps the bolt is provided with the cross bulb, it is used for holding still to be provided with on the block to clamp the cavity that holds of cross bulb, still be provided with on the side of the block that clamps and be used for the cross bulb gets into hold the inside cross jack of cavity, the block that clamps is kept away from the one end of first connecting piece still is provided with and is used for with hold the cavity and the accommodation hole that clamps the outside intercommunication of block, still be provided with between accommodation hole and the cross jack and be used for clamping the passageway of stepping down that passes through when the bolt rotates.

As another embodiment of this application, it is ellipsoid to hold the cavity, the accommodation hole with first connecting piece is located respectively and clamps the block and goes up along holding the ascending both ends of cavity major axis, the cross jack is located hold the side department of cavity.

As another embodiment of this application, still be provided with a plurality of being used for preventing on the inner wall of holding the cavity cross ball head with the positioning groove who clamps the inner wall wearing and tearing of block, positioning groove all sets up holding the cavity and being close to holding hole department.

As another embodiment of this application, it is a plurality of positioning groove all is in the winding the major axis setting of holding the cavity, and is a plurality of positioning groove all sets up at interval each other, and is a plurality of one in the positioning groove with the position of cross jack sets up relatively.

As another embodiment of the application, the positioning groove is further provided with anti-slip lines for preventing the cross ball head from sliding with the accommodating cavity.

As another embodiment of the present application, the clamping block body is cylindrical, and an axis of the clamping block body is overlapped with a long axis of the accommodating cavity.

As another embodiment of the application, the other end of the clamping bolt is also provided with a rotating connecting assembly used for fixing the clamping bolt on the cross arm.

As another embodiment of the present application, the rotation connector includes a ball ring disposed at an end of the clamping pin, and a U-shaped bracket for receiving the ball ring, and the ball ring is rotatably disposed inside the U-shaped bracket by a fastener.

As another embodiment of the application, the ball head ring and the clamping bolt are integrally formed, and the cross ball head and the clamping bolt are also integrally formed.

As another embodiment of the present application, the cross ball head includes a first disc body and a second disc body intersecting with the first disc body and vertically disposed, and an axis of the clamping bolt is disposed parallel to an intersecting axis of the first disc body and the second disc body.

The special connecting hardware fitting for the pin-free power transmission line has the beneficial effects that: compared with the prior art, be connected with each part on the transmission line through first connecting piece, the other end of first connecting piece still sets up and clamps the block to still be provided with on clamping the block and be used for holding the cavity and the cross jack that hold and clamp bolt tip cross plug, the one end that clamps the block and keep away from first connecting piece still is provided with and is used for holding the cavity and the accommodation hole that clamps the outside intercommunication of block, still is provided with the passageway of stepping down that is used for passing through when clamping the bolt rotation between accommodation hole and the cross jack. When a power transmission part such as an insulator is installed, the cross ball head at the end part of the clamping bolt is inserted into the accommodating cavity in the clamping block body through the cross jack, and then the clamping bolt enters the accommodating hole through the abdication channel by rotating the clamping bolt, so that the aim of mutually connecting the clamping bolt and the clamping block body is fulfilled. Simple structure connects swiftly conveniently, solves the easy defect of deviating from in the socket link plate of bulb of leading to bulb link ring because of the spring bolt structure is unreasonable that current socket link plate exists. The invention has the advantages of simple structure, convenient disassembly and assembly and replacement, good anti-drop effect and wide application range, and is particularly suitable for the special connection of the bowl head and the bulb head for 1000-10 kV high-low voltage transmission lines, distribution networks, transformer substations, high-speed railways and the like.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a first structural diagram of a pin-free power transmission line dedicated connection hardware fitting provided in an embodiment of the present invention;

fig. 2 is a second structural diagram of the pin-free type special connection hardware fitting for the power transmission line provided in the embodiment of the present invention;

fig. 3 is an assembly structure diagram of the pin-free type connection fitting dedicated for the power transmission line according to the embodiment of the present invention;

fig. 4 is a sectional structural view of a block body for card mounting used in the embodiment of the present invention.

In the figure: 1. a first connecting member; 2. clamping the block body; 3. clamping a bolt; 4. a cross ball head; 5. an accommodating cavity; 6. an accommodation hole; 7. a cross jack; 8. a yielding channel; 9. a positioning groove; 10. a ball head ring; 11. a U-shaped bracket; 12. a fastener.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to fig. 3, a pin-free type connecting fitting dedicated to a power transmission line according to the present invention will now be described. Exempt from special hookup gold utensil of pin formula transmission line, including first connecting piece 1, set up the block 2 that clamps in first connecting piece 1 tip department, and be used for with clamp the block 2 and dismantle the bolt 3 that clamps of being connected, the tip that clamps the bolt 3 is provided with cross bulb 4, still be provided with the holding cavity 5 that is used for holding cross bulb 4 on clamping the block 2, still be provided with on clamping the side of block 2 and be used for cross bulb 4 to get into the inside cross jack 7 that holds cavity 5, the one end that clamps the block 2 and keep away from first connecting piece 1 still is provided with and is used for holding cavity 5 and the holding hole 6 that clamps the block 2 outside intercommunication, still be provided with between holding hole 6 and the cross jack 7 and be used for the passageway 8 of stepping down that passes through when clamping the bolt 3 and rotate.

Compared with the prior art, the pin-free special connection fitting for the power transmission line, which is provided by the embodiment, is connected with each part on the power transmission line through the first connecting piece 1, the other end of the first connecting piece 1 is further provided with the clamping block body 2, the clamping block body 2 is further provided with the accommodating cavity 5 and the cross jack 7, the accommodating cavity 5 and the cross jack 7 are used for accommodating the cross plug at the end part of the clamping plug 3, one end, far away from the first connecting piece 1, of the clamping block body 2 is further provided with the accommodating hole 6, the accommodating hole 5 is communicated with the outside of the clamping block body 2, and the abdicating channel 8 is further arranged between the accommodating hole 6 and the cross jack 7 and is used for allowing the clamping plug 3 to pass through when rotating. When a power transmission part such as an insulator is installed, the cross ball head 4 at the end part of the clamping bolt 3 is inserted into the accommodating cavity 5 in the clamping block body 2 through the cross jack 7, and then the clamping bolt 3 is rotated to enable the clamping bolt 3 to enter the accommodating hole 6 through the abdication channel 8, so that the aim of mutually connecting the clamping bolt 3 and the clamping block body 2 is fulfilled. Simple structure connects swiftly conveniently, solves the easy defect of deviating from in the socket link plate of bulb of leading to bulb link ring because of the spring bolt structure is unreasonable that current socket link plate exists. The socket has the advantages of simple structure, convenient disassembly and assembly and replacement, good anti-drop effect and wide application range, is particularly suitable for 1000-10 kV high-low voltage transmission lines, distribution networks, transformer substations, high-speed railways and the like, is used for special connection of the socket and the bulb, and ensures that the transmission lines are safer to use.

In this embodiment, as a preferred embodiment, the first connecting member 1 may be a polished rod or a connecting plate, and the end of the connecting plate is provided with a screw through hole, the first connecting member 1 may also be two connecting plates spaced from each other, and the two connecting plates are both provided with screw through holes, and the shape of the first connecting member 1 may be freely selected according to actual conditions and the prior art.

As a specific embodiment of the pin-free type dedicated connection fitting for the power transmission line provided by the present invention, please refer to fig. 4, the accommodating cavity 5 is ellipsoidal, the accommodating hole 6 and the first connection member 1 are respectively located at two end portions of the clamping block body 2 along the long axis direction of the accommodating cavity 5, and the cross-shaped insertion hole 7 is located at the side surface of the accommodating cavity 5. The equator radius of ellipsoid and the diameter size of cross ball 4 match each other and slightly bigger and cross ball 4's diameter size, it has increased the running space of cross ball 4 in holding cavity 5 for the ellipsoid to hold cavity 5, it is more convenient to make cross ball 4's installation and holding the 5 internal rotations of cavity, and can pull cross ball 4 to the one end that holds cavity 5 after clamping block 2 atress, thereby make cross ball 4 and cross jack 7 dislocation, prevent that cross ball 4 from deviating from.

Referring to fig. 3 and 4, as a specific embodiment of the pin-free special connection fitting for the power transmission line provided by the present invention, a plurality of positioning grooves 9 for preventing the cross ball head 4 and the inner wall of the clamping block body 2 from being worn are further disposed on the inner wall of the accommodating cavity 5, and the positioning grooves 9 are disposed at positions of the accommodating cavity 5 close to the accommodating hole 6. The arrangement of the positioning groove 9 can prevent the cross ball head 4 from being abraded with the inner wall of the clamping block body 2, and the safety is improved.

Referring to fig. 3 and 4, a plurality of positioning grooves 9 are all disposed around the long axis of the accommodating cavity 5, and the plurality of positioning grooves 9 are all disposed at intervals, and one of the plurality of positioning grooves 9 is disposed opposite to the cross-shaped insertion hole 7. The positioning groove 9 adopts the arrangement mode, so that the stress of the cross ball head 4 in the accommodating groove is more stable.

As a specific embodiment of the pin-free type special connection hardware fitting for the power transmission line provided by the present invention, please refer to fig. 3 and 4, the positioning groove 9 is further provided with an anti-slip pattern for preventing the cross ball 4 from sliding with the accommodating cavity 5. The anti-slip grains can prevent the cross ball head 4 from excessively rotating, so that the connection is more stable.

Referring to fig. 3 and 4, as a specific embodiment of the pin-free type special connection fitting for the power transmission line provided by the present invention, the clamping block 2 is cylindrical, and the axis of the clamping block 2 is overlapped with the long axis of the accommodating cavity 5. The clamping block body 2 is cylindrical, so that the connection is more convenient and the clamping block body can bear larger external force. Preferably, the block 2 can be a spherical or ellipsoidal type, and can be freely selected according to actual conditions.

As a specific embodiment of the pin-free special connection fitting for the power transmission line provided by the present invention, referring to fig. 3 and 4, the other end of the clamping bolt 3 is further provided with a rotating connection assembly for fixing the clamping bolt 3 on the cross arm. The arrangement of the connecting component enables the clamping bolt 3 to be connected with the electric tower or other parts more conveniently.

Referring to fig. 3 and 4, the rotating connecting piece includes a ball head ring 10 disposed at an end of the clamping bolt 3 and a U-shaped bracket 11 for accommodating the ball head ring 10, and the ball head ring 10 is rotatably disposed inside the U-shaped bracket 11 through a fastener 12. The ball head ring 10 is rotatably arranged in the U-shaped support 11 through the fastener 12, so that the degree of freedom of the clamping bolt 3 is increased during connection, the connection of the clamping bolt 3 can be more convenient and stable, and the connection impact resistance of the clamping bolt 3 is better.

Referring to fig. 3 and 4, as a specific embodiment of the pin-free special connection fitting for the power transmission line provided by the present invention, the ball head ring 10 and the clamping pin 3 are integrally formed, and the cross ball head 4 and the clamping pin 3 are also integrally formed. The clamping bolt 3, the ball head ring 10 and the cross ball head 4 are of an integral structure, so that the connection strength is better.

Referring to fig. 3 and 4, the cross ball 4 includes a first plate and a second plate intersecting with the first plate and vertically disposed, and an axis of the clamping pin 3 is disposed parallel to an intersecting axis of the first plate and the second plate. The cross ball head 4 adopts the structure, so that the cross ball head 4 can be prevented from being easily separated from the cross slot while being capable of rotating, and the connection and installation of the cross ball head 4 are safer and more reliable.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.