CN211507922U - Connection structure for reducing contact resistance - Google Patents
Connection structure for reducing contact resistance Download PDFInfo
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- CN211507922U CN211507922U CN201922457609.2U CN201922457609U CN211507922U CN 211507922 U CN211507922 U CN 211507922U CN 201922457609 U CN201922457609 U CN 201922457609U CN 211507922 U CN211507922 U CN 211507922U
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- contact resistance
- shaped groove
- pressing plate
- connection structure
- reducing contact
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Abstract
The utility model discloses a reduce contact resistance's connection structure, including the U-shaped groove, U-shaped groove open end both sides are equipped with a plurality of pinholes, and the middle part is equipped with the clamp plate, and the clamp plate is pressed on the flexible grounding body of zinc skin cladding, and the locating pin passes the pinhole, is equipped with wedge and locating pin pressure on the wedge inclined plane between each locating pin and the clamp plate. The utility model discloses a reliable connection between the flexible grounding body is realized to four wedge fastening modes, and the mode equivalence that adopts zinc skin cladding ground material increases the area of contact between the ground material, reduces contact resistance, can guarantee high joint strength and low contact resistance, the dependable performance.
Description
Technical Field
The utility model relates to a connection structure, especially a reduce contact resistance's connection structure belongs to electric power system's lightning grounding technical field for connection between the flexible ground material.
Background
Flexible grounding bodies, such as grounding graphite, are widely used in the grounding field due to their good current flow and corrosion resistance. The connection mode of the flexible grounding material directly influences the quality of grounding engineering. At present, the contact area between the grounding materials of the common non-metallic connecting piece is too small, so that the requirements of connection strength and contact resistance cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model provides a to the not enough of prior art existence, the utility model provides a can satisfy the connection strength and the reduction contact resistance's of contact resistance requirement connection structure.
A connecting structure for reducing contact resistance comprises a U-shaped groove, wherein a plurality of pin holes are formed in two sides of the opening end of the U-shaped groove, a pressing plate is arranged in the middle of the opening end of the U-shaped groove, the pressing plate is pressed on a flexible grounding body coated with a zinc sheet, a positioning pin penetrates through the pin holes, and a wedge block is arranged between the positioning pins at two ends and the pressing plate and pressed on the inclined plane of the wedge block.
Furthermore, one end of the pressing plate is horizontal, and the other end of the pressing plate is arc-shaped and matched with the flexible grounding body coated with the zinc sheet in shape.
Furthermore, two ends of the positioning pin are provided with grooves.
Furthermore, the inclined plane of the wedge block is provided with saw-toothed protrusions.
Furthermore, the pressing plate is movably arranged in the U-shaped groove.
Compared with the prior art, the utility model has the advantages of as follows and beneficial effect:
the utility model discloses a reliable connection between the flexible grounding body is realized to four wedge fastening modes, and the mode equivalence that adopts zinc skin cladding ground material increases the area of contact between the ground material, reduces contact resistance, can guarantee high joint strength and low contact resistance, dependable performance
The utility model discloses a non-metallic connecting piece can reduce contact resistance, can be arranged in being connected between the flexible ground material among electric power system's the lightning grounding technique.
Drawings
FIG. 1 is a side cross-sectional view of the non-metallic connector of the present invention for reducing contact resistance;
FIG. 2 is a schematic structural dimension view of a U-shaped groove in an embodiment;
FIG. 3 is a schematic diagram of the dimensions of a non-metallic interconnect for reducing contact resistance in an embodiment;
FIG. 4 is a schematic structural dimension diagram of a platen in an embodiment;
FIG. 5 is a schematic structural dimension diagram of a wedge in an embodiment;
FIG. 6 is a schematic structural dimension diagram of the positioning pin in the example.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some examples of the present invention, not all examples. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
As shown in fig. 1, the connection structure for reducing contact resistance of this embodiment includes a U-shaped groove 1, wherein two sides of an opening end of the U-shaped groove 1 are respectively provided with 4 pin holes, a pressing plate 2 is arranged in the middle of the U-shaped groove, the pressing plate presses 2 on the flexible grounding body coated with the zinc sheet, a positioning pin 4 passes through the pin holes, a wedge block is arranged between the positioning pins at two ends and the pressing plate, and the positioning pin presses on an inclined surface of the wedge block 3.
One end of the pressing plate 2 is horizontal, and the other end of the pressing plate is arc-shaped and matched with the flexible grounding body coated by the zinc sheet. The positioning pin 4 is provided with grooves at both ends as shown in fig. 6. The inclined plane of the wedge block 3 is provided with a saw-toothed bulge.
As shown in FIG. 2, the U-shaped groove of the present embodiment has a thickness of 6mm, two segments of 28mm apart, a pin hole having a distance to the bottom end of 77mm and a length of 97mm, and as shown in FIG. 3, the U-shaped groove has a length of 185mm and a pin hole having a radius of 10 mm.
As shown in FIG. 4, the distance from the arc-shaped bottom of the pressing plate to the bottom end is 10.5mm, and the height is 16.5 mm.
As shown in FIG. 5, the wedges are 75mm in length, 28mm in width and 21 mm in height.
The embodiment is suitable for the connection of 2 graphite-based flexible grounding bodies with the outer diameter of 28 mm. The tensile strength of the flexible grounding body connected by the crimping piece exceeds 5kN, the contact resistance is less than 4m omega, and the quality requirement of grounding engineering is met.
The pressing plate 2 is matched with the U-shaped groove 1 in size, so that the pressing plate 2 can be just movably arranged in the U-shaped groove 1; the zinc sheet is matched with the U-shaped groove 1 in size and is coated on a grounding material to be connected; the flexible grounding body coated by the zinc sheet is arranged in the U-shaped groove 1; the pressing plate 2 is arranged in the U-shaped groove 1 and pressed on the flexible grounding body coated by the zinc sheet; the four positioning pins 4 respectively penetrate through pin holes formed in two ends of the U-shaped groove 1, and the pin holes are located above the pressing plate 2; two wedges 3 are respectively driven into the space between the positioning pins 4 at the two ends and the pressing plate 2, and the positioning pins at the two ends are pressed on the inclined planes of the positioning pins.
The shape of the bottom of the U-shaped groove 1 and the size of the U-shaped groove 1 are designed according to the shape, the size and the design of the flexible grounding body, so that the pressing plate 2, the wedge 3 and the positioning pin 4 can be arranged in the U-shaped groove 1. For example, the bottom of the U-shaped groove 1 may be rounded.
The inclined surface of the wedge 3 is provided with a saw-toothed bulge to prevent the wedge 3 from loosening between the pressure plate 2 and the positioning pin 4. Grooves are arranged at two ends of the positioning pin 4 to prevent the positioning pin 4 from slipping off the pin hole.
The zinc sheet is matched with the U-shaped groove 1 in size and is coated on the grounding material to be connected.
The connection process of the embodiment on the construction site comprises the following steps:
the flexible grounding body to be connected is coated with a zinc sheet and is arranged at the bottom of the U-shaped groove 1, the pressing plate 2 is placed in the U-shaped groove 1 and is pressed on the flexible grounding body coated with the zinc sheet, the positioning pin 4 is inserted into a pin hole formed in the U-shaped groove 1, and the wedge 3 is driven between the pressing plate 2 and the positioning pin 4.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A connection structure for reducing contact resistance, characterized in that: the flexible grounding body coated with the zinc sheet comprises a U-shaped groove, wherein a plurality of pin holes are formed in two sides of the opening end of the U-shaped groove, a pressing plate is arranged in the middle of the opening end of the U-shaped groove, the pressing plate presses on the flexible grounding body coated with the zinc sheet, a positioning pin penetrates through the pin holes, and a wedge block is arranged between the positioning pins at two ends and the pressing plate and presses.
2. The connection structure for reducing contact resistance according to claim 1, wherein: one end of the pressing plate is horizontal, and the other end of the pressing plate is arc-shaped and is matched with the flexible grounding body coated by the zinc sheet in shape.
3. The connection structure for reducing contact resistance according to claim 1, wherein: the locating pin both ends are equipped with the recess.
4. The connection structure for reducing contact resistance according to claim 1, wherein: the inclined plane of the wedge block is provided with a saw-toothed bulge.
5. The connection structure for reducing contact resistance according to claim 1, wherein: the pressing plate is movably arranged in the U-shaped groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922457609.2U CN211507922U (en) | 2019-12-30 | 2019-12-30 | Connection structure for reducing contact resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922457609.2U CN211507922U (en) | 2019-12-30 | 2019-12-30 | Connection structure for reducing contact resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211507922U true CN211507922U (en) | 2020-09-15 |
Family
ID=72396771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922457609.2U Active CN211507922U (en) | 2019-12-30 | 2019-12-30 | Connection structure for reducing contact resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211507922U (en) |
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2019
- 2019-12-30 CN CN201922457609.2U patent/CN211507922U/en active Active
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