CN220490932U

CN220490932U - Adjustable clamping tool table for testing resistivity of precise resistance alloy

Info

Publication number: CN220490932U
Application number: CN202321623018.8U
Authority: CN
Inventors: 曹世举; 张真; 魏海根; 周子健; 陈欢欢; 胡世来; 张朝阳
Original assignee: Hefei University of Technology
Current assignee: Hefei University of Technology
Priority date: 2023-06-26
Filing date: 2023-06-26
Publication date: 2024-02-13
Anticipated expiration: 2033-06-26

Abstract

The utility model discloses an adjustable clamping tool table for testing the resistivity of a precise resistance alloy, which comprises a base table, wherein rotary supporting rods are respectively inserted and installed at two sides of the base table, the rotary supporting rods are in rotary connection with the base table, current end test joints are detachably connected to the tops of the rotary supporting rods and used for pressing and pressing two ends of an alloy piece to be tested, lifting tables are arranged right above the base table in parallel and connected with a backboard through sliding components, the backboard is vertically connected with the base table, voltage end test joints are respectively detachably connected at two sides of the lifting tables and used for pressing and pressing two ends of the alloy piece to be tested. In the process of testing the alloy piece to be tested, the testing operation is convenient, the testing is accurate, the testing use requirements of the alloy piece to be tested with different specifications and sizes can be met, and the application range is wide.

Description

Adjustable clamping tool table for testing resistivity of precise resistance alloy

Technical Field

The utility model relates to the technical field of precision resistance alloy testing, in particular to an adjustable clamping tool table for precision resistance alloy resistivity testing.

Background

Along with the rapid development of science and technology, the precision degree requirements of various fields such as aerospace, national defense, military, ships and warships, 3C products and the like on electronic devices are higher and higher, and the precision resistance alloy is a key material for producing the precision components, so that the requirements on the performance of the precision resistance alloy are higher and higher, in particular, the alloy has small resistance temperature coefficient, high resistivity, small resistance to copper thermoelectric potential, long-term resistance stability, small annual change rate and the like.

In order to be able to evaluate the properties of the alloy more accurately and efficiently, a precise resistance alloy test tool is indispensable. The test principle for alloy resistivity is based on the formula: ρ=rs/L, where ρ represents resistivity, R represents alloy resistance, S represents cross-sectional area, and L represents test length. When the existing precision resistance alloy resistivity testing tool is used, to accurately test the alloy resistivity, a resistance testing instrument with precision meeting the requirement is needed; secondly, the test sample is required to have a regular shape and size which are convenient to measure, a four-terminal wiring method is often adopted for resistance test of the precise resistance alloy, such as a metal material resistivity detection device disclosed in patent number CN206132855U, the metal material resistivity detection device provided by the application can simultaneously measure the resistivity of a plate and a wire, comprises a metal wire with a particularly small diameter, and can be flexibly suitable for different test length requirements by changing the fixing positions of two sets of sample clamping assemblies, but has the following defects in the use process: because the two sets of clamping components are installed in a hole-pin assembly mode, the clearance distance between the two sets of clamping components is certain, so that the two sets of clamping components are only suitable for testing boards with the same thickness specification, the operation of clamping boards with different specifications and shapes is inconvenient, and the application range is narrow.

Disclosure of Invention

The utility model aims to provide an adjustable clamping tool table for testing the resistivity of a precise resistance alloy, which is used for solving the problem that the prior art cannot meet the requirements of resistivity testing on plates with different specifications and shapes.

The aim of the utility model can be achieved by the following technical scheme:

an adjustable clamping tool table for testing the resistivity of a precision resistance alloy, comprising:

a base table;

the rotary support rods are inserted and arranged on two sides of the base table and are rotationally connected with the base table;

the current end test connector is detachably connected to the top of the rotary supporting rod and is used for pressing and abutting against two ends of the alloy piece to be tested;

the lifting platform is arranged right above the base platform in parallel and is connected with the backboard through the sliding component, and the backboard is vertically connected with the base platform;

the voltage end test connector is detachably connected to two sides of the lifting table and used for pressing two ends of the alloy piece to be tested.

As a further scheme of the utility model: the rotary support rod is in an L-shaped bent shape, a plurality of first adjusting holes are formed in the transverse lug end of the rotary support rod, a lock hole is formed in the current end testing joint, a connecting bolt is conveniently inserted into the formed lock hole, and the current end testing joint is fixed at the corresponding position of the first adjusting hole through the bolt.

As a further scheme of the utility model: and the two ends of the rotating support rod are sleeved with a first compression spring, the two ends of the first compression spring are respectively abutted against the base table and the limiting cap, and the limiting cap is in threaded connection with the bottom of the rotating support rod.

As a further scheme of the utility model: the lifting table is provided with a plurality of second adjusting holes, and the second adjusting holes are used for correspondingly inserting and installing the voltage end test connectors.

As a further scheme of the utility model: the top of voltage end test joint has seted up the locked groove, and buckle connection cardboard in the locked groove of seting up, the cardboard is used for spacing conflict on the top surface of elevating platform, just the cover is equipped with sticiss spring two on the voltage end test joint, sticiss spring two's both ends respectively with elevating platform and spacing convex part are inconsistent, spacing convex part integrated structure sets up the bottom of voltage end test joint.

As a further scheme of the utility model: the sliding seat that the sliding assembly includes is connected on the backplate in a sliding way, just the bottom fixed connection of sliding seat the elevating platform.

As a further scheme of the utility model: at least two groups of long strip-shaped sliding holes are formed in the back plate, the formed sliding holes are in sliding connection with a limiting guide rod, and the limiting guide rod is fixedly connected with the sliding seat.

As a further scheme of the utility model: guide rails are respectively inserted and installed at four corners of the lifting table, and the top ends of the guide rails are fixedly connected with the backboard through supporting blocks.

As a further scheme of the utility model: the sliding seat is provided with a handle with an integrated structure.

The utility model has the beneficial effects that:

(1) In the process of testing the alloy piece to be tested, the current end test connector arranged on the rotary supporting rod swings towards the alloy piece to be tested until the current end test connector is tightly pressed against two ends of the alloy piece to be tested, and the sliding component drives the lifting platform to move towards the base platform, so that the voltage end test connector arranged at two ends of the lifting platform moves downwards until the voltage end test connector is tightly pressed against two ends of the alloy piece to be tested, the test operation is convenient, the test is accurate, the test use requirements of the alloy piece to be tested with different specifications and sizes can be met, and the application range is wide;

(2) The current end test connector can be fixed at the first position of the adjusting hole on the corresponding rotating support rod, and the second adjusting hole on the lifting table is internally used for correspondingly inserting and installing the voltage end test connector, so that the current end test connector and the voltage end test connector are convenient to install, are suitable for adjusting and compacting test of alloy pieces to be tested with different thicknesses and lengths, are convenient to operate, are stable in inserting and installing the voltage end test connector, reduce length measurement errors, improve test precision and improve test efficiency;

(3) The adjustable clamping tool table can measure the resistivity of alloy parts to be tested such as wires, rods, blocks and foil, and is simple in structure, high in testing efficiency, and capable of testing without fixing samples by complex clamping structures.

Drawings

The utility model is further described below with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of a current end test connector of the present utility model;

FIG. 3 is a top view of the lift table of the present utility model;

fig. 4 is a schematic cross-sectional view of a voltage end test connector of the present utility model.

In the figure: 1. a base table; 2. alloy piece to be measured; 3. rotating the support rod; 30. an adjusting hole I; 4. a current end test joint; 40. a lock hole; 5. a limit cap; 6. compressing a first spring; 7. a lifting table; 70. an adjusting hole II; 8. a voltage terminal test joint; 80. a locking groove; 81. a limit protrusion; 9. a guide rail; 10. a support block; 11. a back plate; 110. a slide hole; 12. a sliding seat; 13. a bolt; 14. a clamping plate; 15. compressing a second spring; 16. a limit guide rod; 17. a handle.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model; in the description of the present utility model, "a plurality of" means at least two, for example, two, three, etc., unless explicitly defined otherwise.

Referring to fig. 1, the utility model discloses an adjustable clamping tool table for testing resistivity of a precision resistor alloy, which comprises a base table 1, a rotating support rod 3, a current end test connector 4, a lifting table 7 and a voltage end test connector 8, wherein the rotating support rod 3 is respectively inserted and installed at two sides of the base table 1, the rotating support rod 3 is rotationally connected with the base table 1, the current end test connector 4 is detachably connected at the top of the rotating support rod 3, the current end test connector 4 is used for pressing two ends of an alloy piece 2 to be tested, the lifting table 7 is arranged right above the base table 1 in parallel, the lifting table 7 is connected with a backboard 11 through a sliding component, the backboard 11 is vertically connected with the base table 1, the voltage end test connector 8 is detachably connected at two sides of the lifting table 7, and the voltage end test connector 8 is used for pressing two ends of the alloy piece 2 to be tested.

In the process of testing the alloy piece 2 to be tested, the alloy piece 2 to be tested is placed on the base table 1, the rotating support rods 3 positioned on two sides of the base table 1 are rotated, so that the current end test connectors 4 installed on the rotating support rods 3 swing towards the alloy piece 2 to be tested until the current end test connectors 4 are tightly pressed against two ends of the alloy piece 2 to be tested, the sliding component drives the lifting table 7 to move towards the base table 1, so that the voltage end test connectors 8 installed on two ends of the lifting table 7 move downwards until the voltage end test connectors 8 are tightly pressed against two ends of the alloy piece 2 to be tested, a four-terminal wiring method is adopted for resistance testing of the alloy piece 2 to be tested, electrical conduction is carried out to obtain test resistance R data, and the length distance L data of the voltage end test connectors 8 installed on two ends of the lifting table 7 can be accurately measured, and the sectional area data S of the alloy piece to be tested can be directly measured, so that according to the formula: the resistivity data result of the alloy piece 2 to be tested is obtained through calculation, the testing operation is convenient, and the testing is accurate; meanwhile, the adjustable clamping tool table is applicable to alloy pieces 2 to be tested with different thickness specifications, the rotating support rod 3 inserted on the base table 1 is adjusted in height, so that the current end test connector 4 meets the alloy pieces 2 to be tested with different thickness specifications, the lifting table 7 moves down in height along with the sliding assembly adjustment, so that the voltage end test connector 8 meets the alloy pieces 2 to be tested with different thickness specifications, the adjustment and the use are convenient, and the testing efficiency is high.

In this embodiment, as shown in fig. 2, the rotating strut 3 is in an L-shaped bent shape, the transverse ear end of the rotating strut 3 is provided with a plurality of first adjusting holes 30, the current end test connector 4 is provided with a lock hole 40, a connecting bolt 13 is conveniently inserted in the provided lock hole 40, the current end test connector 4 is fixed at the corresponding first adjusting hole 30 through the bolt 13, when the current end test connector 4 is installed, according to the length of the alloy piece 2 to be tested, the position of the current end test connector 4 pressed and abutted at two ends of the alloy piece 2 to be tested can be adjusted, the current end test connector 4 is installed at the corresponding first adjusting hole 30, and is connected in the first adjusting hole 30 and the lock hole 40 through the bolt 13, so that the current end test connector 4 and the rotating strut 3 can be conveniently connected, and the device is suitable for testing the alloy piece 2 to be tested with different length specifications, and is convenient to adjust and use.

Further, as shown in fig. 1, the first compression spring 6 is sleeved on the vertical two ends of the rotating support rod 3, two ends of the first compression spring 6 are respectively abutted against the base table 1 and the limiting cap 5, the limiting cap 5 is in threaded connection with the bottom of the rotating support rod 3, the limiting cap 5 can be lifted upwards in the rotating process of the rotating support rod 3 along the base table 1, the first compression spring 6 is in a compressed state, the rotating support rod 3 is rotated to enable the current end testing connector 4 to swing in place, the limiting cap 5 is loosened, the first compression spring 6 is abutted against the limiting cap 5 to reset, and therefore the current end testing connector 4 is enabled to be pressed against the alloy piece 2 to be tested stably, and testing precision is ensured.

In this embodiment, as shown in fig. 3, a plurality of second adjusting holes 70 are formed in the lifting platform 7, and the second adjusting holes 70 are used for correspondingly inserting and installing the voltage end test connectors 8, so that when the alloy piece 2 to be tested with different shapes and specifications is used, the length distance positions of the voltage end test connectors 8 located at two ends of the lifting platform 7 can be adjusted, specifically, the voltage end test connectors 8 at two ends are respectively inserted and installed in the corresponding second adjusting holes 70, the length distance positions of the voltage end test connectors 8 at two ends are adjusted conveniently, the inserted and installed voltage end test connectors 8 are stable, the length measurement error is reduced, and the test precision and the test efficiency are improved.

Further, as shown in fig. 4, the top of the voltage end test connector 8 is provided with a locking groove 80, the locking groove 80 is provided with a snap connection clamping plate 14, the clamping plate 14 is used for limiting and abutting on the top surface of the lifting table 7, the voltage end test connector 8 is sleeved with a second compression spring 15, two ends of the second compression spring 15 respectively abut against the lifting table 7 and the limiting convex part 81, the limiting convex part 81 is integrally arranged at the bottom of the voltage end test connector 8, the second compression spring 15 abuts against the limiting convex part 81 in the mounting process of the voltage end test connector 8, and is matched with the clamping plate 14 to limit the voltage end test connector 8, so that the voltage end test connector 8 is inserted and mounted stably, the second compression spring 15 plays a role of buffering and compressing when the alloy piece 2 to be tested is pressed along with the downward movement of the lifting table 7, and the second compression spring 15 is made of pure copper material because the voltage end test connector 8 has good conductivity, but the hardness is general, and the second compression spring 15 can prevent the voltage end test connector 8 from being damaged due to collision.

In this embodiment, as shown in fig. 1, the sliding seat 12 that the sliding assembly includes is slidably connected on the back plate 11, and the bottom fixed connection elevating platform 7 of the sliding seat 12, the sliding seat 12 that is fixedly connected with the elevating platform 7 is convenient for slide along the back plate 11, thereby be convenient for operate elevating platform 7 reciprocates, and then drive the voltage end test joint 8 to move down and compress and press and touch alloy piece 2 to be measured, convenient operation.

Further, as shown in fig. 1, at least two groups of elongated sliding holes 110 are formed in the back plate 11, the sliding holes 110 are formed in the back plate, a limiting guide rod 16 is slidably connected to the sliding holes 110, the limiting guide rod 16 is fixedly connected to the sliding seat 12, the limiting guide rod 16 can be in an i-shape in the sliding process of the sliding seat 12, the middle part of the limiting guide rod 16 is slidably connected to the sliding holes 110, one end part of the limiting guide rod slides to abut against the back plate 11, and the other end part of the limiting guide rod slides to abut against the sliding seat 12, so that the sliding seat 12 slides stably along the sliding holes 110 through the limiting guide rod 16.

Further, as shown in fig. 1, the four corners of the lifting platform 7 are respectively inserted with a guide rail 9, the top ends of the guide rails 9 are fixedly connected with a back plate 11 through support blocks 10, so that the lifting platform 7 slides stably along the guide rails 9 at the four corners, and the voltage end test connectors 8 at two ends of the lifting platform 7 are ensured to be in contact with the alloy piece 2 to be tested stably.

Further, as shown in fig. 1, the sliding seat 12 is provided with a handle 17 with an integrated structure, and the provided handle 17 is convenient for pushing the sliding seat 12 up and down to perform sliding action, and is convenient to operate.

The foregoing describes one embodiment of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model.

Claims

1. Adjustable clamping tool table for precision resistance alloy resistivity test, characterized by comprising:

a base table (1);

the rotary support rods (3) are inserted and arranged at two sides of the base table (1) and are rotationally connected with the base table (1);

the current end test connector (4) is detachably connected to the top of the rotary supporting rod (3), and the current end test connector (4) is used for pressing and abutting against two ends of the alloy piece (2) to be tested;

the lifting tables (7) are arranged right above the base table (1) in parallel, the lifting tables (7) are connected with the back plate (11) through the sliding assembly, and the back plate (11) is vertically connected with the base table (1);

the voltage end test connectors (8) are detachably connected to two sides of the lifting table (7), and the voltage end test connectors (8) are used for tightly pressing two ends of the alloy piece (2) to be tested.

2. The adjustable clamping tool table for precision resistance alloy resistivity test according to claim 1, wherein the rotary supporting rod (3) is in an L-shaped bent shape, a plurality of first adjusting holes (30) are formed in the transverse lug end of the rotary supporting rod (3), a lock hole (40) is formed in the current end test connector (4), a connecting bolt (13) is conveniently inserted into the formed lock hole (40), and the current end test connector (4) is fixed at the position of the corresponding first adjusting hole (30) through the bolt (13).

3. The adjustable clamping tool table for precision resistance alloy resistivity test according to claim 2, wherein a first compression spring (6) is sleeved on two vertical ends of the rotating support rod (3), two ends of the first compression spring (6) respectively abut against the base table (1) and the limiting cap (5), and the limiting cap (5) is in threaded connection with the bottom of the rotating support rod (3).

4. The adjustable clamping tool table for testing the resistivity of the precise resistance alloy according to claim 1, wherein a plurality of second adjusting holes (70) are formed in the lifting table (7), and the second adjusting holes (70) are used for correspondingly inserting and installing the voltage end testing connector (8).

5. The adjustable clamping tool table for precision resistance alloy resistivity testing according to claim 4, wherein a locking groove (80) is formed in the top of the voltage end testing joint (8), a clamping plate (14) is connected in the locking groove (80), the clamping plate (14) is used for limiting and abutting on the top surface of the lifting table (7), a compression spring II (15) is sleeved on the voltage end testing joint (8), two ends of the compression spring II (15) respectively abut against the lifting table (7) and the limiting convex part (81), and the integral structure of the limiting convex part (81) is arranged at the bottom of the voltage end testing joint (8).

6. An adjustable clamping tool table for precision resistance alloy resistivity test according to claim 1, characterized in that a sliding seat (12) included in the sliding assembly is slidably connected to the back plate (11), and the bottom of the sliding seat (12) is fixedly connected to the lifting table (7).

7. The adjustable clamping tool table for precision resistance alloy resistivity test according to claim 6, wherein at least two groups of long sliding holes (110) are formed in the back plate (11), limiting guide rods (16) are slidably connected in the formed sliding holes (110), and the limiting guide rods (16) are fixedly connected with the sliding seat (12).

8. The adjustable clamping tool table for precision resistance alloy resistivity test according to claim 6, wherein guide rails (9) are respectively inserted and installed at four corners of the lifting table (7), and the top ends of the guide rails (9) are fixedly connected with the back plate (11) through support blocks (10).

9. The adjustable clamping tool table for precision resistance alloy resistivity test of claim 6, wherein the sliding seat (12) is provided with an integrally structured handle (17).