CN220508979U - Resistivity test fixture - Google Patents
Resistivity test fixture Download PDFInfo
- Publication number
- CN220508979U CN220508979U CN202321854990.6U CN202321854990U CN220508979U CN 220508979 U CN220508979 U CN 220508979U CN 202321854990 U CN202321854990 U CN 202321854990U CN 220508979 U CN220508979 U CN 220508979U
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- test fixture
- resistivity test
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- boss
- groove
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- 238000012360 testing method Methods 0.000 title claims abstract description 33
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model discloses a resistivity test fixture, which belongs to the technical field of fixtures and comprises a bottom plate, wherein one end of the bottom plate is vertically provided with a side plate, two sides of the top end of the other end of the side plate are provided with top plates, the bottom ends of the two top plates are respectively provided with a hydraulic column, and the bottom ends of the two hydraulic columns are connected with a bearing plate. According to the utility model, a worker firstly places samples to be tested in each row of grooves in each class, then a hydraulic column works to enable a receiving plate and a plurality of cover plates to integrally move downwards for a distance until a boss in a certain row contacts with the highest sample to be tested, the circumference outer side of a gear is meshed with a plurality of teeth, then the worker manually rotates a rotating rod to enable the gear to drive a movable rod to move downwards until the boss of the cover plates presses the sample to be tested in the grooves, the boss and the grooves are used as chucks, and then leads at two ends are connected with an external resistance tester, so that a loop can be formed for resistance measurement.
Description
Technical Field
The utility model relates to the technical field of clamps, in particular to a resistivity test clamp.
Background
The resistance is a physical quantity for representing the resistance characteristics of various substances, and the length of a certain material is 1m, and the cross-sectional area is 1m 2 Is equal in value to the resistivity of the conductor of such a material. It reflects the property of a substance to hinder the current flow, and it is not only related to the kind of substance, but also affected by external factors such as temperature, pressure and magnetic field. A fixture is required to hold the device in place when resistivity testing is performed.
In the prior art, for example, patent publication number CN218445251U discloses a multi-chuck high-temperature resistivity test fixture, which aims to solve the technical problems that the fixture is not easy to clamp and disassemble, is easy to bond after high-temperature test, cannot be applicable to samples with different shapes and sizes, and the like, and when in test, the fixture is only in the internal environment of a test furnace, while an external current tester is positioned outside the furnace and is in a normal-temperature environment, so that the no-load insulation resistance of a measuring electrode basically does not change along with the temperature change of the samples, and the reliability and stability of high-temperature resistance measurement are ensured; similar to this technique, a plurality of samples to be measured of different heights cannot be measured simultaneously.
Disclosure of Invention
The utility model aims to solve the defects in the prior art and provides a resistivity test fixture.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the resistivity test fixture comprises a bottom plate and side plates vertically installed on the bottom plate, wherein the side plates are parallel to the bottom plate and provided with two top plates, the two top plates are provided with hydraulic columns, a bearing plate is arranged and connected between the two hydraulic columns, a plurality of equal-angle adjusting assemblies are arranged on the bearing plate, the adjusting assemblies are connected with a cover plate through a pressure dividing frame, and a plurality of rows of bosses are arranged at the bottom end of the cover plate.
Further, a plurality of groups of grooves are formed in the bottom plate, metal gaskets are arranged in each groove and at the bottom of each boss, and the wires are connected through the metal gaskets.
Further, a plurality of equidistant rectangular openings are formed in the side face of the side plate, and the rectangular openings of each row and the centers of the corresponding adjusting assembly, the cover plate, the groove and the boss are all located on the same plane.
Further, the upper end and the lower end of the rectangular opening are respectively provided with a magnetic attraction groove, the inside of the rectangular opening is slidably provided with an I-shaped block, and the other end of the I-shaped block is connected with the cover plate.
Further, a through groove is formed in the middle of the I-shaped block, an iron core is arranged in the through groove, and the length and the width of the iron core are the same as those of the magnetic attraction groove.
Further, the adjusting part comprises a sleeve, a movable rod is slidably arranged in the sleeve, a through hole is formed in the lower end of the circumference of the sleeve, a rotating rod is rotatably arranged in the through hole, a gear is arranged at one end of the rotating rod, a convex slot is formed in the movable rod, a plurality of equidistant teeth are arranged on the inner wall of one side of the convex slot, the outer side of the circumference of the gear is meshed with a plurality of teeth, a scale groove is formed in the outer wall of the circumference of the movable rod, and a scale mark is formed in the inner wall of the scale groove.
Further, the pressure dividing frame is formed by connecting two cylinders and a transverse plate, and the two cylinders are positioned at two ends of the top end of the cover plate.
The beneficial effects of the utility model are as follows:
1. according to the resistivity test fixture provided by the utility model, a worker firstly places samples to be tested in each row of grooves in each class, then a hydraulic column works to enable a receiving plate and a plurality of cover plates to integrally move downwards for a distance until a boss in a certain row contacts the highest samples to be tested, the circumference outer side of a gear is meshed with a plurality of teeth, then the worker manually rotates a rotating rod to enable the gear to drive a movable rod to move downwards until the boss of the cover plates presses the samples to be tested in the grooves, the boss and the grooves are used as chucks, then leads at two ends are connected with an external resistance tester, a loop can be formed for resistance measurement, a plurality of samples to be tested in different classes and different heights can be detected simultaneously, the test efficiency is greatly improved, and the test time is saved.
2. According to the resistivity test fixture provided by the utility model, the scale groove is formed in the circumferential outer wall of the movable rod, and the scale mark is formed in the inner wall of the scale groove, so that the scale groove can display the downward moving height of the movable rod, and the comparison is convenient for staff after recording.
3. According to the resistivity test fixture, the H-shaped block is slidably arranged in the rectangular opening, so that the cover plate is very stable in the up-and-down movement process in the rectangular opening, the iron core is fixedly inserted in the H-shaped block, the length and the width of the iron core are the same as those of the magnetic attraction groove, when the boss moves downwards to the inside of the groove until the sample to be tested is compressed, the magnetic attraction groove is attracted with the lower end of the iron core, the stability of the H-shaped block in a static state is improved, and then the error of the sample to be tested in a resistance test is reduced.
Drawings
FIG. 1 is a schematic diagram of a resistivity test fixture according to the present utility model;
FIG. 2 is a schematic diagram of a rear view of a resistivity test fixture according to the present utility model;
FIG. 3 is a schematic view of a structure of a rotating rod of a resistivity test fixture according to the present utility model;
FIG. 4 is a schematic diagram of a resistivity test fixture I-block according to the present utility model.
In the figure: 1 bottom plate, 2 side plates, 3 top plate, 4 hydraulic column, 5 bearing plate, 6 rotating rod, 7 pressure dividing frame, 8 cover plate, 9 groove, 10 boss, 11 magnetic slot, 12 rectangular opening, 13I-shaped block, 14 iron core, 15 metal gasket, 16 sleeve, 17 movable rod, 18 scale slot, 19 convex slot, 20 gear, 21 through slot.
Detailed Description
Referring to fig. 1 to 4, the resistivity test fixture comprises a bottom plate 1, wherein a side plate 2 is vertically arranged on one side of the bottom plate 1, top plates 3 are arranged on two sides of the top end of the other end of the side plate 2, hydraulic columns 4 are arranged at the bottom ends of the two top plates 3, the bottom ends of the two hydraulic columns 4 are connected with a bearing plate 5, a plurality of equal-angle adjusting components are arranged at the bottom ends of the bearing plate 5, the bottom ends of the adjusting components are connected with a pressure dividing frame 7, the bottom ends of the pressure dividing frame 7 are connected with a cover plate 8, and a plurality of rows of bosses 10 are arranged at the bottom ends of the cover plate 8.
In the utility model, a plurality of groups of grooves 9 are formed on the outer wall of the top end of the bottom plate 1, metal gaskets 15 are arranged at the bottom end of each groove 9 and the bottom end of each boss 10, the bosses 10 and the grooves 9 are used as chucks, the bosses 10 are pressed against a sample to be tested placed in the grooves 9 through height adjustment of a hydraulic column 4 and an adjusting assembly, and then wires at two ends are connected with an external resistance tester to form a loop for resistance measurement.
The outer wall of the side plate 2 is provided with a plurality of equidistant rectangular openings 12, and the rectangular openings 12 of each row are positioned on the same plane with the centers of the adjusting component, the cover plate 8, the groove 9 and the boss 10;
the top end and the bottom end of the rectangular opening 12 are provided with magnetic attraction grooves 11, an I-shaped block 13 is slidably arranged in the rectangular opening 12, the other end of the I-shaped block 13 is connected with one end of the cover plate 8, a through groove 21 is formed in the middle of the I-shaped block 13, an iron core 14 is arranged in the through groove 21, the length and the width of the iron core 14 are the same as those of the magnetic attraction grooves 11, when the boss 10 moves downwards to the inside of the groove 9 until a sample to be tested is compressed, the magnetic attraction grooves 11 are attracted with the lower end of the iron core 14, the stability of the I-shaped block 13 in a static state is improved, and then the error of the sample to be tested in a resistance test is reduced;
the adjusting component comprises a sleeve 16, a movable rod 17 is slidably arranged in the sleeve 16, a through hole is formed in the lower end of the circumference of the sleeve 16, a rotating rod 6 is rotatably arranged in the through hole, a gear 20 is arranged at one end of the rotating rod 6, a convex slot 19 is formed in the movable rod 17, a plurality of equidistant teeth are arranged on the inner wall of one side of the convex slot 19, the outer side of the circumference of the gear 20 is meshed with a plurality of teeth, a scale groove 18 is formed in the outer wall of the circumference of the movable rod 17, scale marks are formed in the inner wall of the scale groove 18, the rotating rod 6 is manually rotated by a worker, the gear 20 drives the movable rod 17 to move downwards until a boss of a cover plate 8 is pressed against a sample to be detected in the groove 9, the scale groove 18 can display the downward moving height of the movable rod 17, and the scale marks are convenient for the worker to compare after recording;
the pressure dividing frame 7 is formed by connecting two cylinders and a transverse plate, and the two cylinders are positioned at two ends of the top end of the cover plate 8, so that the cover plate 8 is uniformly stressed when being pressed downwards.
Working principle: firstly, placing samples to be tested with each type of height in the grooves 9 of each row by a worker, then, operating the hydraulic column 4 to enable the receiving plate 5 and the plurality of cover plates 8 to integrally move downwards for one end distance until the boss 10 of a certain row contacts the highest sample to be tested, engaging the circumference outer side of the gear 20 with a plurality of teeth, then, manually rotating the rotating rod 6 by the worker to enable the gear 20 to drive the movable rod 17 to move downwards until the boss of the cover plate 8 compresses the sample to be tested in the grooves 9, taking the boss 10 and the grooves 9 as chucks, connecting wires at two ends with an external resistance tester to form a loop for resistance measurement, simultaneously detecting a plurality of samples to be tested with different types and different heights, greatly improving the test efficiency and saving the test time;
the scale groove 18 is formed in the outer wall of the circumference of the movable rod 17, and scale marks are formed in the inner wall of the scale groove 18, so that the scale groove 18 can display the downward moving height of the movable rod 17, and comparison is convenient for staff after recording;
through inside slidable mounting of rectangle opening 12 has worker's shape piece 13, makes apron 8 very stable in the inside upper and lower removal in-process of rectangle opening 12, and the inside fixed grafting iron core 14 of worker's shape piece 13, and iron core 14 length is the same with width and magnetism inhale groove 11, and when boss 10 moves down inside recess 9 to compress tightly the sample that awaits measuring, magnetism inhale the groove 11 and inhale with the lower extreme of iron core 14 mutually, the stability when increasing worker's shape piece 13 static, and then the error when reducing the sample that awaits measuring carries out the resistance test.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (7)
1. The resistivity test fixture is characterized by comprising a bottom plate, side plates vertically installed on the bottom plate, two top plates parallel to the bottom plate, hydraulic columns installed on the top plates, a bearing plate connected between the two hydraulic columns, a plurality of equal-angle adjusting assemblies arranged on the bearing plate, and a cover plate connected with the adjusting assemblies through a pressure dividing frame, wherein a plurality of rows of bosses are arranged at the bottom end of the cover plate.
2. The resistivity test fixture of claim 1, wherein a plurality of groups of grooves are formed in the bottom plate, and metal gaskets are mounted in each groove and at the bottom of each boss, and wires are connected through the metal gaskets.
3. The resistivity test fixture of claim 2, wherein the side plates are provided with a plurality of equidistant rectangular openings, and the rectangular openings of each row are on the same plane as the centers of the corresponding adjusting assembly, cover plate, groove and boss.
4. The resistivity test fixture as claimed in claim 3, wherein the rectangular opening has magnetic slots formed in both ends thereof, a rectangular opening having a worker-shaped block slidably mounted therein, and a cover plate connected to the other end of the worker-shaped block.
5. The resistivity test fixture of claim 4, wherein a through slot is formed in the middle of the I-shaped block, and an iron core is arranged in the through slot, and the length and the width of the iron core are the same as those of the magnetic attraction slot.
6. The resistivity test fixture as claimed in claim 1, wherein the adjusting assembly includes a sleeve, a movable rod is slidably mounted inside the sleeve, a through hole is formed in the lower end of the circumference of the sleeve, a rotating rod is rotatably mounted inside the through hole, a gear is mounted at one end of the rotating rod, a convex slot is formed inside the movable rod, a plurality of equidistant teeth are mounted on the inner wall of one side of the convex slot, the outer side of the circumference of the gear is meshed with a plurality of teeth, a scale groove is formed in the outer wall of the circumference of the movable rod, and scale marks are formed in the inner wall of the scale groove.
7. The resistivity test fixture of claim 1, wherein the voltage divider is formed by connecting two cylinders to a cross plate, and the two cylinders are located at two ends of the top end of the cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321854990.6U CN220508979U (en) | 2023-07-14 | 2023-07-14 | Resistivity test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321854990.6U CN220508979U (en) | 2023-07-14 | 2023-07-14 | Resistivity test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220508979U true CN220508979U (en) | 2024-02-20 |
Family
ID=89877226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321854990.6U Active CN220508979U (en) | 2023-07-14 | 2023-07-14 | Resistivity test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220508979U (en) |
-
2023
- 2023-07-14 CN CN202321854990.6U patent/CN220508979U/en active Active
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