double-C-shaped elastic wiring device
Technical Field
The invention belongs to the field of electricity, and particularly relates to a connecting device for conveniently connecting wires of two specifications.
Background
With the increasing development of urbanization and power supply construction, higher and higher requirements are put forward on the production, safety and maintenance operation of power supply lines and related equipment thereof.
The connection operation of the power supply line and the equipment thereof has close relation with the maintenance and the safety of the line equipment.
In the past, for the wiring of the equipment on the concrete pole of the power supply line, a wire clamp (commonly called a wire clamp in the industry, generally used for the connection of a single wire or two wires, as shown in fig. 1) is generally used, and the wire clamp adopts an upper pressing plate and a lower pressing plate (shown as a and b in the figure), at least two groups of hexagon bolts (d 1 and d 2) and two groups of hexagon nuts (c 1 and c 2), and is matched with a corresponding structural form of a plane washer and a spring washer. To compress the wire, an operator must hold a wrench with both hands, and tighten the nut and the bolt simultaneously to compress the wire; for operators who carry out live-line operation on the electric pole, the short-distance live-line operation with both hands is unrealistic; when live working is carried out, the worker can only use two groups of insulating fastening tools to fasten the bolt, the whole fastening working process is very inconvenient, the fastening quality of the wire cannot be guaranteed, the faults that the connection wire generates heat at the joint and the connection quality is affected due to serious oxidation of the wire caused by poor fastening quality are easy to occur, and the personal safety of the worker cannot be guaranteed in the process of fastening the bolt.
In addition, the connecting wire of the Shanghai power supply line equipment has 25mm2And 35mm2The wire of two kinds of specifications, in order to adapt to the wire of different wire footpaths, need be equipped with the wire clip of different specifications, also increased the variety specification and the quantity of spare part, be unfavorable for reducing the quantity and the administrative cost of spare part.
Disclosure of Invention
The invention aims to solve the technical problem of providing a double-C-shaped elastic wiring device, which adopts a double-C-shaped double-opening elastic wiring clamp structure, is assisted by a semicircular-head square-neck bolt and a flange nut, can realize the quick compression joint and fastening of a wire by only using a sleeve wrench when fastening the bolt, greatly facilitates the live wiring operation of equipment and circuits on an electric pole by operating personnel, can simultaneously adapt to the wiring of two wires with different wire diameters, ensures the fastening quality of the connecting wire, is beneficial to eliminating the circuit heating fault caused by the improper fastening, and can also ensure the personal safety of the operating personnel in the operation process.
The technical scheme of the invention is as follows: the utility model provides a two C type elasticity termination, includes through the fastener of bolt fastening on the support, characterized by: the elastic wiring device comprises a double-C-shaped double-opening elastic wire clamp, a half-round-head square-neck bolt and a hexagonal flange-face nut; the double-C-shaped double-opening elastic wire clamp comprises a first C-shaped curved surface component with the section bending radius of R and a second C-shaped curved surface component with the section bending radius of R; a first extension straight edge and a second extension bevel edge are respectively arranged at the opening end of the first C-shaped curved surface member, the other end of the second extension bevel edge is connected with one end of the opening end of the second C-shaped curved surface member, and a third extension straight edge is arranged at the other end of the opening end of the second C-shaped curved surface member; a long hole is formed in the second extending inclined edge; a first bolt hole and a second bolt hole are respectively arranged on the first extension straight edge and the third extension straight edge; a regular polygonal hole is formed in the bracket; the regular polygonal hole, the first round hole, the second round hole and the long hole are arranged coaxially; a limit bending edge or a limit bending bulge is arranged at the tail end of the first extension straight edge; a half-round square-neck bolt is arranged in the regular polygonal hole of the bracket; the double-C-shaped double-opening elastic wire clamp is arranged on the other side of the bracket; and the half-round-head square-neck bolt penetrates through the first bolt hole, the long hole and the second bolt hole on the first extension straight edge, the second extension oblique edge and the third extension straight edge and is connected with the hexagonal flange nut in a rotating and fastening manner.
Specifically, the shape of the opening of the regular polygonal hole is matched with the shape of the cross section of the square neck part of the semi-circular head square neck bolt.
Furthermore, the limit bending edge or the limit bending protrusion on the first extension straight edge is matched with the position of the side edge of the support.
Furthermore, a conducting strip is arranged between the support and the first extending straight edge of the double-C-shaped double-opening elastic wire clamp.
The conducting strip is fixedly connected with the first extending straight edge of the double-C-shaped double-opening elastic wire clamp into a whole.
Specifically, the open end of the first C-shaped curved surface member and the open end of the second C-shaped curved surface member are disposed in opposite directions.
Furthermore, the first extension straight edge and the third extension straight edge of the double-C-shaped double-opening elastic wire clamp are arranged in parallel.
The first C-shaped curved surface component, the first extension straight edge and the second extension inclined edge form a first R-shaped elastic component; the second C-shaped curved member, the third extended straight edge and the second extended oblique edge form a second R-shaped elastic member.
The first R-shaped elastic component and the second R-shaped elastic component are arranged in a longitudinally-turned 180-degree mirror image mode along the longitudinal axis of the half-round-head square-neck bolt, and an integrated double-C-shaped double-opening elastic wire clamp component is formed by sharing the second prolonged bevel edge.
In other words, the longitudinal section of the double-C-shaped double-opening elastic wire clamp is a Z-shaped component, the first extension straight edge forms a Z-shaped lower transverse stroke, the second extension oblique edge forms a Z-shaped oblique stroke, and the third extension straight edge forms a Z-shaped upper transverse stroke; arranging a first C-shaped curved surface component at the junction of the lower horizontal stroke and the oblique stroke of the Z shape, and arranging a second C-shaped curved surface component at the junction of the oblique stroke and the upper horizontal stroke of the Z shape; the first extension straight edge, the first C-shaped curved member, the second extension inclined edge, the second C-shaped curved member and the third extension straight edge jointly form an integrated double-C-shaped double-opening elastic wire clamp member.
Compared with the prior art, the invention has the advantages that:
1. the bracket is provided with regular polygonal holes, and a component structure with a half-round head square neck bolt matched with a hexagonal flange face nut and a double-C-shaped double-opening elastic wire clamp are adopted, so that the whole fastening process can be finished only by one socket wrench, and the clamp is particularly suitable for live-wire wiring operation of equipment on a rod;
2. the limiting bent edge structure is arranged, and the limiting bent edge structure is matched with the bolt to control the movement of the double-C-shaped double-opening elastic wire clamp in three degrees of freedom, namely, up, down, left, right and rotation, so that the following rotation of the wire clamp on the plane of the support along with the rotation of the nut can be limited, and the rapid pressing operation is facilitated;
3. the flange face nut and the bolt are matched, and a plane washer and a spring washer can be omitted in the whole wiring device, so that the wiring operation steps and the wiring process are simplified, the purchase cost of the whole wiring device can be reduced, and the production cost is reduced by 60 percent compared with that of the original wire pressing clamping block;
4. the whole double-C-shaped elastic wiring device is light in weight, good in conductivity, good in weather resistance and convenient to assemble and disassemble, improves the safe operation reliability of products on a power supply line, can ensure that a power supply worker can operate and install wiring on an electric pole by one hand, and is high in safety coefficient;
5. the elastic wire clamp is simultaneously provided with the first C-shaped curved surface structure and the second C-shaped curved surface structure to form the first R-shaped elastic component and the second R-shaped elastic component which are oppositely arranged, so that the elastic wire clamp can be simultaneously suitable for wiring of wires with two different wire diameters, the specification and the number of spare parts can be reduced, and the manufacturing cost and the power supply operation cost of equipment can be reduced.
Drawings
FIG. 1 is a schematic diagram of a conventional wire clamp;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic structural view of the present apparatus after the flange face nuts and bolts are tightened in place;
fig. 4 is a view from direction a of fig. 3.
In the figure, 1 is a bracket, 1-1 is a regular polygon hole, 1-2 is a conducting strip, 2 is a first C-shaped curved surface component, 2-1 is a first extension straight edge, 2-2 is a second extension inclined edge, 2-3 is a long hole, 3 is a second C-shaped curved surface component, 3-1 is a third extension straight edge, 4 is a half-head square-neck bolt, 4-1 is a half-head square-neck bolt square-neck part, 5 is a hexagonal flange nut, 6 is a limiting bending edge, 7 is a first lead, and 8 is a second lead.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
In fig. 2, the technical scheme of the invention provides a double-C-shaped elastic wiring device, which comprises a wire clamp fixed on a bracket through a bolt, wherein the elastic wiring device comprises a double-C-shaped double-opening elastic wire clamp, a half-round-head square-neck bolt and a hexagonal flange-face nut.
The double-C-shaped double-opening elastic wire clamp comprises a first C-shaped curved surface component 2 with a section bending radius of R and a second C-shaped curved surface component 3 with a section bending radius of R; a first straight extension edge 2-1 and a second oblique extension edge 2-2 are respectively arranged at the opening end of the first C-shaped curved surface member, the other end of the second oblique extension edge is connected with one end of the opening end of the second C-shaped curved surface member, and a third straight extension edge 3-1 is arranged at the other end of the opening end of the second C-shaped curved surface member; the second extending inclined edge is correspondingly provided with a long hole 2-3; a first bolt hole and a second bolt hole are respectively arranged on the first extension straight edge and the third extension straight edge; the bracket 1 is provided with a regular polygon hole 1-1.
As can be seen from the figure, the regular polygon hole is arranged coaxially with the first round hole, the second round hole and the long hole.
At the end of the first elongate straight edge, a limit bend edge 6 or limit bend protrusion is provided.
A half-round square-neck bolt 4 is arranged in the regular polygonal hole of the bracket; the double-C-shaped double-opening elastic wire clamp is arranged on the other side of the bracket; and the half-head square-neck bolt penetrates through the first bolt hole, the long hole and the second bolt hole on the first extension straight edge, the second extension oblique edge and the third extension straight edge and then is connected with the hexagonal flange nut 5 in a rotating and fastening mode.
Specifically, the shape of the opening of the regular polygonal hole 1-1 is matched with the shape of the cross section of the square neck part 4-1 of the half-round head square neck bolt.
Furthermore, a limit bending edge 6 or a limit bending protrusion on the first extension straight edge is matched with the position of the side edge of the support 1.
Furthermore, a conducting strip 1-2 is arranged between the bracket and the first extending straight edge of the double-C-shaped double-opening elastic wire clamp.
The conducting strip and the first extending straight edge of the double-C-shaped double-opening elastic wire clamp are fixedly connected into a whole through stamping or spot welding.
Because the double-C-shaped double-opening elastic wire clamp is made of tin bronze materials (with good elasticity and conductivity), in order to ensure that the contact resistance between the double-C-shaped double-opening elastic wire clamp and the bracket is as small as possible, a conducting strip made of copper materials is arranged between the bracket and the double-C-shaped double-opening elastic wire clamp so as to ensure that the contact resistance between the bracket and the double-C-shaped double-opening elastic wire clamp meets the specification requirement.
As can be seen, the open end of the first C-shaped curved surface member and the open end of the second C-shaped curved surface member are disposed opposite to each other.
When the hexagonal flange face nut is in a non-compression state or a loose position, the first extending straight edge and the third extending straight edge of the double-C-shaped double-opening elastic wire clamp are arranged in parallel.
The first C-shaped curved surface component 2, the first extension straight edge 2-1 and the second extension inclined edge 2-2 form a first R-shaped elastic component; the second C-shaped curved member 3, the third extended straight edge 3-1 and the second extended oblique edge 2-2 form a second R-shaped elastic member.
As can be seen, the first R-shaped elastic member and the second R-shaped elastic member are arranged along the longitudinal axis of the half-head square-neck bolt in a longitudinally-turned 180-degree mirror image mode. Wherein, the first prolonged straight edge 2-1 forms the straight stroke edge of the 'R' shape in the first R-shaped elastic component, and the second prolonged oblique edge 2-2 forms the oblique stroke edge of the 'R' shape in the first R-shaped elastic component; meanwhile, the second extending oblique edge forms an R-shaped straight stroke edge of the second R-shaped elastic component, and the third extending straight edge 3-1 forms an R-shaped oblique stroke edge of the second R-shaped elastic component. The first R-shaped elastic component and the second R-shaped elastic component share the second extension bevel edge 2-2 to form an integrated double-C-shaped double-opening elastic wire clamp component.
In other words, the longitudinal section of the double-C-shaped double-opening elastic wire clamp is a Z-shaped component, the first extension straight edge 2-1 forms a lower Z-shaped horizontal stroke, the second extension oblique edge 2-2 forms a Z-shaped oblique stroke, and the third extension straight edge 3-1 forms an upper Z-shaped horizontal stroke; a first C-shaped curved surface component 2 is arranged at the junction of the lower horizontal stroke and the oblique stroke of the Z shape, and a second C-shaped curved surface component 3 is arranged at the junction of the oblique stroke and the upper horizontal stroke of the Z shape; the first extension straight edge, the first C-shaped curved member, the second extension inclined edge, the second C-shaped curved member and the third extension straight edge jointly form an integrated double-C-shaped double-opening elastic wire clamp member.
During actual manufacture, punch out regular octagon hole on the wiring support of equipment earlier, half round head square neck bolt impresses (tightly), make half round head square neck bolt and support even as an organic whole, load onto two C shape two opening elasticity fastener again, utilize the spacing limit of bending on the first extension straight flange, about restricting whole elasticity binding clip, the activity on the three degree of freedom of rotation, prevent the rotation of following that whole elasticity termination from taking place because of the rotation of nut, and then realize the restrictive positioning to this elasticity binding clip.
Compared with the existing wiring clamp, the device adopts the hexagon flange nut to be matched with the half-round head square neck bolt, so that a plane washer and a spring washer can be saved, the installation operation process and steps can be reduced, and the manufacturing cost of the whole wiring device can be reduced.
In fig. 3 and 4, after the hexagonal flange face nut 5 and the half-round head square neck bolt 4 are screwed in place, the hexagonal flange face nut and the half-round head square neck bolt are matched, the openings of the first and second C-shaped curved surface members are reduced by applying pressure to the first extension straight edge 2-2 and the third extension straight edge 3-1 of the double-C-shaped double-opening elastic wire clamp, and the first lead 7 in the first C-shaped curved surface member is tightly held by pressing a C-shaped opening cylinder; similarly, the second wire 8 in the second C-shaped curved member is also gripped at the same time, thereby achieving a reliable connection between the double-C-shaped double-opening elastic wire clamp and the wire.
According to the double-C-shaped double-opening elastic wire clamp in the technical scheme, the wire is placed by utilizing the elasticity of the C-shaped curved surface component, the nut is screwed, and the pressing plate is pressed to firmly connect the wire and the wire clamp. The nut is loosened to open the wire clamp, and the wire can be conveniently detached by utilizing the elasticity of the C-shaped curved surface component to loosen the wire.
Because be provided with first, second C shape curved surface component simultaneously on two opening elastic wire clamps of two C shapes for this elastic jointing clamp can connect the wire of two kinds of different line footpaths simultaneously, or said differently, this elastic jointing clamp can adapt to the connection of two kinds of different line footpaths wires simultaneously and need not to change the jointing clamp, makes the adaptation face of this product obtain the extension.
Because the body of its elasticity binding clip is integrative, through the hexagonal flange face nut of screwing, utilize the restriction positioning action of spacing limit of bending 6, can control the upper and lower of fastener, left and right sides, rotatory three degree of freedom, for the wire clip of the brass formula of two bodies now, this binding clip's electrically conductive contact resistance is lower, and fail safe nature is higher.
Therefore, the double-C-shaped elastic wiring device has the advantages of low production cost, light weight, good conductivity, good weather resistance and convenience in folding and assembling, is beneficial to improving the safe operation reliability of products on a power supply line, can ensure that constructors operate and install wiring on an electric pole by one hand, and is an electric connection product with higher safety coefficient.
The technical indexes of the product are as follows:
the applicable temperature is as follows: -40 ℃ to + 70 ℃;
applicable voltage: 12kV to 0.4 kV;
the applicable current is as follows: 200A;
strength of the connecting wire: when acting force less than or equal to 30kg is applied to the connected lead, the lead has no displacement;
temperature rise test: the passing current is 200A, the test time is 8 hours, and the temperature rise of the product is less than or equal to 63 ℃.
Because the invention adopts the structure of the double-C-shaped double-opening elastic wire clamp and is assisted by the structure of the component which is matched with the half-round head square neck bolt and the hexagonal flange face nut, the whole fastening process can be finished by only one socket wrench, and the invention is particularly suitable for the live-wire wiring operation of equipment on a pole; the limiting bent edge structure is arranged, so that the following rotation of the wire clamp on the plane of the support along with the rotation of the nut can be limited, and the rapid pressing operation is facilitated; the flange face nut and the bolt are matched, so that the wiring operation step and the wiring process are simplified, and the purchase cost of the whole wiring device can be reduced; the first C-shaped curved surface structure and the second C-shaped curved surface structure are arranged on the double-C-shaped double-opening elastic wire clamp simultaneously, so that the double-C-shaped double-opening elastic wire clamp can be suitable for wiring of two wires with different wire diameters simultaneously; the whole elastic wiring device not only greatly facilitates the operation of live wiring of equipment and lines on the electric pole by operating personnel, but also ensures the fastening quality of the connecting wires and the personal safety of the operating personnel in the operation process.
The invention can be widely applied to the field of design and manufacture of the wire connecting device of the power supply equipment.