CN209927931U - Loop resistance test wire clamp suitable for high-voltage switch - Google Patents
Loop resistance test wire clamp suitable for high-voltage switch Download PDFInfo
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- CN209927931U CN209927931U CN201920185824.9U CN201920185824U CN209927931U CN 209927931 U CN209927931 U CN 209927931U CN 201920185824 U CN201920185824 U CN 201920185824U CN 209927931 U CN209927931 U CN 209927931U
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Abstract
The utility model discloses a return circuit resistance test fastener suitable for high tension switchgear, including contact, wiring portion and handle, the one end of connecting wiring portion can be dismantled to the contact, and the handle is connected to the other end of wiring portion, and wiring portion connecting wire simultaneously, the cover is equipped with insulating cover on the handle. The wire clamp is mainly used for solving the contact problem when the tested end is a clamp, the contact is directly inserted into the clamp of the tested end, so that a larger contact area is obtained, and current is finally transmitted to a wire through the contact and the wiring part. The utility model discloses can improve the area of contact of fastener and measured end, effectively reduce contact resistance, improve the measuring accuracy, have simple structure, the dismouting is swift, and weight is lighter, connects the stable difficult not hard up characteristics of being connected.
Description
Technical Field
The utility model relates to a test is with fastener, in particular to return circuit resistance test fastener suitable for high tension switchgear.
Background
The test wire clamp of the current loop resistance tester is used for clamping a measuring wire clamp at a contact surface or a wire clamp in a clamp mode, and the following problems exist in the test process for multiple times: in the handcart type high-voltage switch loop resistance test process, because the equipment wire clamp is not matched with the tested switch, the contact resistance is large, so that the test result is unqualified for many times, and the test precision is poor and time is wasted. And because the nip undersize, so the testing personnel need operate many times, waste time and energy, will cause certain injury to the switch contact again, consequently to the effectual suitable fastener of return circuit resistance appearance design crucial to the measurement of return circuit resistance.
Publication number CN 204086318U's utility model provides a return circuit resistance test fixture, including support and two fastener that set up on the support. The two wire clamps are arranged oppositely, and a plurality of bulges are arranged on the clamping surface of the wire clamps. By adjusting the distance between the two wire clamps, conductors with different diameters can be clamped. Moreover, the clamping surface is provided with a bulge. The loop resistance test fixture is convenient to clamp and can prevent the conductor from being damaged.
The wire clamp in the above document is improved to a certain extent compared with the traditional wire clamp, but when the measured end is a clamp, two wire clamps can not be in good contact, and the problems of small contact area and large contact resistance still exist.
SUMMERY OF THE UTILITY MODEL
To prior art exist in the use with the problem that measured end area of contact is little, contact resistance is big, the utility model provides a loop resistance test fastener suitable for high tension switchgear can improve the area of contact of fastener and measured end, effectively reduces contact resistance, improves the measuring accuracy.
The technical scheme of the utility model is as follows.
The utility model provides a return circuit resistance test fastener suitable for high voltage switch, includes contact, wiring portion and handle, the one end of connecting wiring portion can be dismantled to the contact, and the handle is connected to the other end of wiring portion, and wiring portion connecting wire simultaneously, the cover is equipped with insulating cover on the handle. The wire clamp is mainly used for solving the contact problem when the tested end is a clamp, the contact is directly inserted into the clamp of the tested end, so that a larger contact area is obtained, and current is finally transmitted to a wire through the contact and the wiring part.
Preferably, the contact is of a cylindrical structure, through holes are formed in two ends of the contact, the through holes in the bottom end of the contact are connected with bolts, and the bolts are connected with the wiring portion simultaneously. Because the junction of contact and anchor clamps is the surface of contact, consequently the interior of contact then sets up to the cavity form, does benefit to connecting bolt's installation on the one hand, and on the other hand material saving lightens weight, makes its dismouting simple, convenient to carry.
Preferably, the wire connecting portion is connected to the lead wire by a plurality of bolts. The wire passes through the bolt fastening on wiring portion, improves the stability of connecting, increases area of contact to easy dismounting.
Preferably, the shape of the contact includes a cylindrical shape or a rectangular parallelepiped shape. Because the measured end clamps are different in shape, a plurality of contacts with wide application range are needed, and the cylindrical and rectangular shapes are the contacts with the widest application range and can be used for different clamps.
Preferably, the wire connection part and the handle form a closed ring structure, and the wire connection part and the handle are integrally formed. Because the contact is connected with the wiring part through the bolt, a certain space is needed on one side of the wiring part so as to facilitate the disassembly and assembly of the nut, the closed annular structure is a better solution, and a larger space is left on the inner ring of the structure, and the structure is stable and light.
Preferably, the outer side of the contact is provided with an elastic sheet, the bottom end of the elastic sheet is connected with the bottom of the contact, the top end of the elastic sheet is suspended relative to the surface of the contact, and the top end of the elastic sheet is provided with a bulge comprising two inclined planes. Because the contact receives the pressure of anchor clamps when using, consequently set up the flexure strip and can increase the atress, the arch can prevent to slide simultaneously, is favorable to improving the stability of connecting.
Preferably, a groove is arranged at the connecting part of the wire connecting part and the contact, and the groove is consistent with the specification of the outer side of the bottom of the contact. When the contact is connected with the wiring part, certain poor contact may exist, and in order to prevent the contact area from being too small, a groove is arranged at the connection part, so that the bottom of the contact is embedded in the groove, and the contact area is increased.
The utility model has the advantages that: the contact area with the measured clamp is large, the structure is simple, the dismounting is rapid, the weight is light, the connection is stable and is not easy to loose.
Drawings
Fig. 1 is a schematic view of an embodiment of the present invention;
in the figure: 1-contact, 2-wiring part, 3-handle, 4-bolt and 5-lead.
Detailed Description
The technical scheme is further explained by combining the drawings in the specification.
Example 1: as shown in fig. 1, the loop resistance test wire clamp suitable for the high-voltage switch comprises a contact, a wiring part and a handle, wherein the contact can be detached from one end of the wiring part, the other end of the wiring part is connected with the handle, the wiring part is connected with a wire simultaneously, and the handle is sleeved with an insulating sleeve. The wire clamp is mainly used for solving the contact problem when the tested end is a clamp, the contact is directly inserted into the clamp of the tested end, so that a larger contact area is obtained, and current is finally transmitted to a wire through the contact and the wiring part.
In this embodiment, the contact is a cylindrical structure, through holes are formed in two ends of the contact, the through holes in the bottom end of the contact are connected with bolts, and the bolts are simultaneously connected with the wiring portion. Because the junction of contact and anchor clamps is the surface of contact, consequently the interior of contact then sets up to the cavity form, does benefit to connecting bolt's installation on the one hand, and on the other hand material saving lightens weight, makes its dismouting simple, convenient to carry.
In this embodiment, the wiring portion is connected to the lead by a plurality of bolts. The wire passes through the bolt fastening on wiring portion, improves the stability of connecting, increases area of contact to easy dismounting.
In this embodiment, the contact is cylindrical in shape. Because the measured end anchor clamps shape is different, consequently need several kinds of application scope wide contacts, and cylindrical and cuboid be the contact shape that application scope is the widest, can deal with various different anchor clamps, and this embodiment still has the cuboid contact in addition.
In this embodiment, the wire connection portion and the grip form a closed ring structure, and the wire connection portion and the grip are integrally formed. The wire connecting portion and the handle of the present embodiment are of a trapezoidal structure as a whole, wherein the bottom side of the trapezoid is replaced by a rectangle, and the rectangle is the position of the handle. Because the contact is connected with the wiring part through the bolt, a certain space is needed on one side of the wiring part so as to facilitate the disassembly and assembly of the nut, the closed annular structure is a better solution, and a larger space is left on the inner ring of the structure, and the structure is stable and light.
Example 2: the basic structure of this embodiment is the same as the previous embodiment, and the difference is that the outside of contact is equipped with the flexure strip, the flexure strip bottom is connected the contact bottom, and the flexure strip top is unsettled for the contact surface, and the flexure strip top is equipped with the arch including two inclined planes. Because the contact receives the pressure of anchor clamps when using, consequently set up the flexure strip and can increase the atress, the arch can prevent to slide simultaneously, is favorable to improving the stability of connecting.
In this embodiment, a groove is formed at a connection position where the wiring portion contacts the contact, and the groove has the same specification as that of the outer side of the bottom of the contact. When the contact is connected with the wiring part, certain poor contact may exist, and in order to prevent the contact area from being too small, a groove is arranged at the connection part, so that the bottom of the contact is embedded in the groove, and the contact area is increased.
This embodiment can improve the area of contact of fastener and measured end, effectively reduces contact resistance, improves measurement accuracy, has simple structure, and the dismouting is swift, and weight is lighter, connects the difficult not hard up characteristics of stability.
It should be noted that the specific embodiment is only used for further illustration of the technical solution, and is not used for limiting the scope of the technical solution, and any modification, equivalent replacement, improvement and the like based on the technical solution should be considered as being within the protection scope of the present invention.
Claims (7)
1. The utility model provides a return circuit resistance test fastener suitable for high voltage switch, its characterized in that, includes contact, wiring portion and handle, the one end of connecting wiring portion can be dismantled to the contact, and the handle is connected to the other end of wiring portion, and wiring portion connecting wire simultaneously, the cover is equipped with insulating cover on the handle.
2. The loop resistance test wire clamp suitable for the high-voltage switch as claimed in claim 1, wherein the contact is of a cylindrical structure, through holes are formed in two ends of the contact, the through holes in the bottom end of the contact are connected with bolts, and the bolts are simultaneously connected with the wiring portion.
3. A loop resistance test clamp suitable for a high voltage switch according to claim 1 or 2, wherein the connection portion is connected to the conductor by a plurality of bolts.
4. The loop resistance testing clip for high voltage switches of claim 2, wherein the shape of said contact comprises a cylindrical or rectangular parallelepiped shape.
5. The loop resistance test wire clamp suitable for the high-voltage switch as claimed in claim 2, wherein the wire connection portion and the handle form a closed ring structure, and the wire connection portion and the handle are integrally formed.
6. The loop resistance test clamp suitable for the high-voltage switch as claimed in claim 4, wherein an elastic piece is arranged on the outer side of the contact, the bottom end of the elastic piece is connected with the bottom of the contact, the top end of the elastic piece is suspended relative to the surface of the contact, and a protrusion comprising two inclined planes is arranged at the top end of the elastic piece.
7. The loop resistance test clamp suitable for the high-voltage switch as claimed in claim 5, wherein the connection part of the wiring part and the contact is provided with a groove, and the groove is in accordance with the specification of the outer side of the bottom of the contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920185824.9U CN209927931U (en) | 2019-02-02 | 2019-02-02 | Loop resistance test wire clamp suitable for high-voltage switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920185824.9U CN209927931U (en) | 2019-02-02 | 2019-02-02 | Loop resistance test wire clamp suitable for high-voltage switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209927931U true CN209927931U (en) | 2020-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920185824.9U Active CN209927931U (en) | 2019-02-02 | 2019-02-02 | Loop resistance test wire clamp suitable for high-voltage switch |
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| CN (1) | CN209927931U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114137312A (en) * | 2020-11-02 | 2022-03-04 | 国网冀北电力有限公司检修分公司 | Loop resistance test assembly |
-
2019
- 2019-02-02 CN CN201920185824.9U patent/CN209927931U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114137312A (en) * | 2020-11-02 | 2022-03-04 | 国网冀北电力有限公司检修分公司 | Loop resistance test assembly |
| CN114137312B (en) * | 2020-11-02 | 2023-12-22 | 国网冀北电力有限公司检修分公司 | Loop resistance test assembly |
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