CN110618317A - Special pliers for measuring crimping contact resistance of locomotive large wire and wire lug - Google Patents
Special pliers for measuring crimping contact resistance of locomotive large wire and wire lug Download PDFInfo
- Publication number
- CN110618317A CN110618317A CN201810632886.XA CN201810632886A CN110618317A CN 110618317 A CN110618317 A CN 110618317A CN 201810632886 A CN201810632886 A CN 201810632886A CN 110618317 A CN110618317 A CN 110618317A
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- Prior art keywords
- wire
- contact resistance
- measuring
- locomotive
- crimping contact
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention discloses a pair of special pliers for measuring crimping contact resistance of a locomotive large wire and a wire lug, and belongs to the technical field of locomotive maintenance equipment.
Description
Technical Field
The invention belongs to the technical field of locomotive maintenance equipment, and particularly relates to special pliers for measuring a crimping contact resistance of a locomotive large wire and a wire lug.
Background
After the locomotive large wire is in compression joint with the wire lug, a loop resistance tester is needed to measure the contact resistance at the compression joint. The length of the bare wire is not more than 3mm according to the rule of wiring of locomotive electrical equipment of iron standard TB 1507-93, while the width of a wire clamp of the existing loop resistance tester is far more than 3mm, so that the bare wire part cannot be directly clamped, and the contact resistance of a crimping part cannot be measured by adopting the loop resistance tester.
Disclosure of Invention
The invention provides the special pliers for measuring the contact resistance of the crimping of the locomotive large wire and the wire lug, aiming at overcoming the problems in the prior art, and the special pliers can be used for directly clamping the extremely short bare wire part of the crimped locomotive large wire and the wire lug, stably clamping the deformed wire after crimping, having large contact area and measuring the contact resistance with high precision.
In order to solve the problems in the prior art, the following technical scheme is adopted.
The utility model provides a be used for locomotive big line and special pincers of lug crimping contact resistance measurement which characterized in that, includes tong arm, torsional spring and pin joint axle, the quantity of tong arm is 2, and 2 tong arms pass through pin joint axle fixed connection with the torsional spring, the thickness of tong arm is 1.0 ~ 2.5mm, the tong arm includes binding clip and pincers handle, the inboard of keeping silent of binding clip is provided with the sawtooth, at least one side of binding clip scribbles insulating varnish, is equipped with the wiring hole on at least one binding clip.
Furthermore, the forceps arms are made of red copper.
Further, the pivot shaft is an aluminum rivet.
Furthermore, conductive paste is coated outside the pivot shaft.
Furthermore, the thickness of the insulating paint is 0.2-0.5 mm.
Further, the saw teeth are trapezoidal teeth.
Compared with the prior art, the invention has the following beneficial effects:
1. the special clamp of the invention replaces a wire clamp of a loop resistance tester, can be used for directly clamping a very short bare wire part after a locomotive large wire and a wire lug are in compression joint, and the saw teeth arranged on the inner side of the jaw can stably clamp the deformed wire after compression joint, have large contact area and measure the precision of contact resistance.
2. According to the special pliers, the pliers arms are integrally made of red copper materials, and the electric conductivity is good.
3. In the special pliers, the saw teeth arranged on the inner side of the jaw are trapezoidal teeth, and the contact surface of the saw teeth and the exposed wire is a small plane, so that the contact resistance between the special pliers and the exposed wire can be greatly reduced, and the measurement precision can be further improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced 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 based on these drawings without creative efforts.
Fig. 1 is a schematic structural view of the special pliers of the present invention.
In the figure: 1. a clamp arm; 11. a binding clip; 12. a forceps handle; 13. jaws, 14, saw teeth; 2. a torsion spring; 3. a pivot shaft; 4. and a wiring hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
As shown in figure 1, the special pliers for measuring the crimping contact resistance of the locomotive large line and the line lug comprises 2 pliers arms 1, 2 torsion springs and a pivot shaft 3, wherein the number of the pliers arms 1 is 2, and the 2 pliers arms 1 are fixedly connected with the torsion springs 2 through the pivot shaft 3. In a normal state, the forceps heads 11 of the 2 forceps arms 1 are in biting contact with each other.
The clamp arm 1 is integrally made of red copper material with excellent conductivity, and the thickness of the clamp arm is 1.0-2.5 mm.
The clamp arm 1 comprises a clamp head 11 used for clamping an electric wire and a clamp handle 12 used for holding the electric wire, sawteeth 14 are arranged on the inner side of a clamp opening 13 of the clamp head 11, the sawteeth 14 are stable in clamping the electric wire deformed after crimping, the contact area is large, and the measurement accuracy of contact resistance is high.
At least one side (the side close to the wire lug when clamping the wire) of the clamp head 11 is coated with insulating paint, and the insulating paint is used for insulating and disconnecting the special clamp from the wire lug and preventing the special clamp from being conducted with the wire lug to cause measurement errors. At least one of the binding clip 11 is provided with a wiring hole 4.
When the device is used, the U + and the I + of the loop resistance tester are conducted with the wiring hole 4 of the special clamp through a lead, the special clamp is clamped at the exposed wire position of the crimping position of a large wire and a wire lug of a locomotive, if the contact is good, the insulation paint on the clamp head 11 needs to be observed if the contact is good or not when the device is used every time, and the U + and the I + of the loop resistance tester clamp the wire lug through the wire clamp of the loop resistance tester, so that the contact resistance can be measured.
In the preferred scheme, the pivot shaft 3 is an aluminum rivet, so that the electric conductivity is good, and the strength is higher than that of red copper.
In a preferable scheme, the pivot shaft 3 is coated with conductive paste, and the conductive paste can reduce the contact resistance at the pivot shaft 3 and improve the measurement precision.
In the preferable scheme, the thickness of the insulating paint is 0.2-0.5 mm.
In the preferred scheme, the saw teeth 14 are trapezoidal teeth, and the contact surface between the trapezoidal teeth and the bare wire is a small plane, so that the contact resistance between the special pliers and the bare wire can be greatly reduced, and the measurement precision can be further improved.
The special pliers can be used for directly clamping the extremely short bare wire part after the locomotive large wire and the wire lug are in compression joint, stably clamping the deformed wire after compression joint, and measuring the contact resistance with large contact area and high precision.
The embodiments described in this specification are merely illustrative of implementations of the inventive concept and the scope of the present invention should not be considered limited to the specific forms set forth in the embodiments but rather by the equivalents thereof as may occur to those skilled in the art upon consideration of the present inventive concept.
Claims (6)
1. The utility model provides a be used for locomotive main line and special pincers of lug crimping contact resistance measurement which characterized in that: including tong arm (1), torsional spring (2) and pin joint axle (3), the quantity of tong arm (1) is 2, and 2 tong arm (1) pass through pin joint axle (3) fixed connection with torsional spring (2), the thickness of tong arm (1) is 1.0 ~ 2.5mm, tong arm (1) is including binding clip (11) and pincers handle (12), the inboard saw tooth (14) that is provided with of keeping silent (13) of binding clip (11), at least one side of binding clip (11) scribbles insulating varnish, is equipped with wiring hole (4) on at least one binding clip (11).
2. The special pliers for measuring the crimping contact resistance of the locomotive large wire and the wire lug according to claim 1, is characterized in that: the clamp arm (1) is made of red copper.
3. The special pliers for measuring the crimping contact resistance of the locomotive large wire and the wire lug according to claim 1, is characterized in that: the pivot shaft (3) is an aluminum rivet.
4. The special pliers for measuring the crimping contact resistance of the locomotive large wire and the wire lug according to claim 3, wherein: conductive paste is coated outside the pivot shaft (3).
5. The special pliers for measuring the crimping contact resistance of the locomotive large wire and the wire lug according to claim 1, is characterized in that: the thickness of the insulating paint is 0.2-0.5 mm.
6. The special pliers for measuring the crimping contact resistance of the locomotive large wire and the wire lug according to any one of claims 1 to 5, wherein: the saw teeth (14) are trapezoidal teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810632886.XA CN110618317A (en) | 2018-06-20 | 2018-06-20 | Special pliers for measuring crimping contact resistance of locomotive large wire and wire lug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810632886.XA CN110618317A (en) | 2018-06-20 | 2018-06-20 | Special pliers for measuring crimping contact resistance of locomotive large wire and wire lug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110618317A true CN110618317A (en) | 2019-12-27 |
Family
ID=68920481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810632886.XA Pending CN110618317A (en) | 2018-06-20 | 2018-06-20 | Special pliers for measuring crimping contact resistance of locomotive large wire and wire lug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110618317A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113937534A (en) * | 2021-11-03 | 2022-01-14 | 佳源科技股份有限公司 | Live-line electricity-taking temperature measuring device and method |
| CN114324997A (en) * | 2021-12-28 | 2022-04-12 | 广东电网有限责任公司 | Loop resistance testing device |
-
2018
- 2018-06-20 CN CN201810632886.XA patent/CN110618317A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113937534A (en) * | 2021-11-03 | 2022-01-14 | 佳源科技股份有限公司 | Live-line electricity-taking temperature measuring device and method |
| CN114324997A (en) * | 2021-12-28 | 2022-04-12 | 广东电网有限责任公司 | Loop resistance testing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191227 |