CN216485253U

CN216485253U - Resistance test equipment

Info

Publication number: CN216485253U
Application number: CN202122708222.7U
Authority: CN
Inventors: 钟神龙; 杨涛; 钟行征; 李平; 刘媛媛; 王绍宇; 鲜勇; 王博; 王俊
Original assignee: Ningbo Xusheng Auto Technology Co Ltd
Current assignee: Ningbo Xusheng Group Co ltd
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-05-10
Anticipated expiration: 2031-11-05

Abstract

The utility model relates to a resistance testing device, which comprises a testing area for accommodating a workpiece to be tested and testing resistance, and is characterized in that: the test area is also provided with a pressurizing mechanism which can pressurize the surface to be tested of the workpiece to be tested, the pressurizing mechanism comprises at least two independently arranged pressurizing blocks and an elastic piece connected with the pressurizing blocks, and compared with the prior art, the test device has the advantages that: the testing area is also provided with a pressurizing mechanism capable of pressurizing the surface to be tested of the workpiece to be tested, the pressurizing mechanism is utilized to apply detection voltage to the surface to be tested, whether the voltage leakage from the surface to be tested of the workpiece to be tested to the negative pole exists or not is monitored through a corresponding resistance tester, and in addition, due to the arrangement of the elastic piece, when the surface to be tested of the workpiece to be tested does not exist in the same plane, each pressurizing block can be better attached to the surface to be tested of the workpiece to be tested.

Description

Resistance test equipment

Technical Field

The present invention relates to a test apparatus, and more particularly, to an apparatus for resistance testing.

Background

The product has the characteristic that a non-conductive substance is used for isolating or wrapping the charged body so as to prevent a safety measure of electric shock, and the good insulation can ensure the safe operation of electrical equipment and circuits. Since insulation resistance is the most basic insulation index of electrical equipment and electrical lines, the most direct method of insulation test is to judge whether the insulation of a product is good or bad by measuring the insulation resistance of the product. The existing insulation resistance testing method is to manually test the insulation resistance of a tested product by using a megohmmeter, and when the manual test is long in time consumption, the testing efficiency is low, and the labor cost is low. To solve the technical problem, for example, a chinese patent application No. CN201811628292.8 (application publication No. CN109633277A) discloses a resistance testing apparatus and system, where the resistance testing apparatus includes a fixture provided with a test slot and used for placing a product to be tested, a first testing mechanism provided below the fixture and used for testing the front resistance of the product to be tested, and a pressing mechanism used for pressing the product to be tested toward the first testing mechanism, and the first testing mechanism is provided with at least one first testing end, and each first testing end can be penetrated by the test slot to abut against the product to be tested, so as to test the front resistance of the product to be tested, and improve the automation degree of the resistance test of the product.

Although the resistance testing device can realize the insulation resistance test of the tested product, the problem that the surface to be tested of the device to be tested is not flat is solved, and further improvement is needed in order to improve the precision of the contact or the attachment of the device to be tested and the product to be tested.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a resistance testing device capable of improving the fitting precision with a product to be tested in the prior art.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the resistance testing device comprises a testing area for accommodating a workpiece to be tested and testing the resistance, and is characterized in that: the test area is also provided with a pressurizing mechanism capable of pressurizing the surface to be tested of the workpiece to be tested, the pressurizing mechanism comprises at least two independently arranged pressurizing blocks and an elastic piece connected to the pressurizing blocks, and the elastic pieces enable the pressurizing blocks corresponding to each other to always have the tendency of jacking the corresponding surface to be tested.

Because the surface to be measured of the workpiece to be tested may not be located on the same plane, in order to better attach each pressurizing block to the surface to be tested of the workpiece to be tested, preferably, the pressurizing mechanism includes a connecting plate for connecting each pressurizing block, a guide seat is fixed at a position of the connecting plate corresponding to each pressurizing block, the guide seat has a guide hole which is through up and down, each pressurizing block is correspondingly provided with a limit groove which moves up and down and is connected to the guide hole through a guide rod, the guide rod can move up and down along the guide hole together with each corresponding pressurizing block, and the elastic member is connected to each corresponding pressurizing block through the guide rod, so that each pressurizing block always has a tendency of pushing open the corresponding surface to be tested. When the surface to be measured corresponding to the pressurizing block is higher than the reference surface of the surface to be measured, the corresponding pressurizing block and the guide rod can move upwards along the guide hole, and the elastic piece can be in a pressed state, so that the corresponding pressurizing block can be tightly attached to the surface to be measured of the workpiece to be measured.

In order to connect each pressurizing block to the connecting plate, it is preferable that the guide rod includes a lower end portion extending into the limiting groove of each pressurizing block and an upper end portion passing through the guide hole and exposed outside thereof, and the upper end portion of the guide rod is further connected with a connecting member so that the guide rod and each connected pressurizing block are connected to the connecting plate together.

In order to achieve the connection of the elastic element, it is preferable that a portion of the lower end of the guide rod adjacent to the opening of the limiting groove has an extension portion extending in a radial direction, the elastic element is a compression spring sleeved on the guide rod, a lower end of the compression spring is connected to the extension portion, and an upper end of the compression spring is connected to the guide seat.

In order to more accurately press each pressing block onto the surface to be tested of the workpiece to be tested, preferably, the connecting plate is further provided with a detecting piece capable of preventing each pressing block from being excessively pressed onto the surface to be tested of the workpiece to be tested.

The detection piece is preferably rod-shaped and comprises a detection head and a rod tail, the detection head is higher than each pressurizing block, and correspondingly, a connecting seat for connecting the rod tail is further arranged on the connecting plate.

Furthermore, the pressurizing mechanism further comprises a driving part capable of adjusting the distance between the connecting plate and each pressurizing block relative to the workpiece to be tested, correspondingly, the testing area is further provided with a rack for connecting the driving part, the rack is provided with a guide rail distributed towards the direction of the workpiece to be tested, correspondingly, the driving part comprises an air cylinder for driving a first support on the guide rail to move towards the workpiece to be tested, a piston rod of the air cylinder is fixedly connected with a second support connected onto the connecting plate, and the second support is fixedly connected with the first support.

Furthermore, a resistance tester for testing the resistance of the workpiece to be tested is also arranged on the rack.

Compared with the prior art, the utility model has the advantages that: the testing device is characterized in that a pressurizing mechanism capable of pressurizing the surface to be tested of the workpiece to be tested is further arranged in the testing area, detection voltage is applied to the surface to be tested by the pressurizing mechanism, whether the voltage leakage from the surface to be tested of the workpiece to be tested to the negative pole exists or not is monitored through a corresponding resistance tester, and therefore the insulation voltage resistance of the workpiece to be tested is tested.

Drawings

FIG. 1 is a schematic structural diagram of a resistance testing apparatus according to an embodiment of the present invention;

FIG. 2 is an enlarged schematic view at A in FIG. 1;

FIG. 3 is a schematic view showing a structure of a part of a pressing mechanism portion in the embodiment of the present invention;

FIG. 4 is a schematic structural view of another part of the pressing mechanism part in the embodiment of the present invention;

fig. 5 is a cross-sectional view of fig. 3.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

As shown in FIGS. 1 to 5, the preferred embodiment of the present invention is shown. The resistance testing device of the embodiment comprises a testing area 1 for accommodating a workpiece 2 to be tested and carrying out resistance measurement, a pressurizing mechanism 3 capable of pressurizing a surface to be tested of the workpiece 2 to be tested is further arranged in the testing area 1, the pressurizing mechanism 3 comprises at least two pressurizing blocks 31 arranged independently and elastic pieces 32 connected to the pressurizing blocks 31, and the elastic pieces 32 enable the corresponding pressurizing blocks 31 to always have the tendency of pushing open the corresponding surface to be tested. The testing area 1 is further provided with a pressurizing mechanism 3 capable of pressurizing a surface to be tested of the workpiece 2 to be tested, the pressurizing mechanism 3 is used for applying detection voltage to the surface to be tested, whether the surface to be tested of the workpiece 2 to be tested leaks electricity to a negative pole through a corresponding resistance tester 5 to test the insulation and voltage resistance of the workpiece 2 to be tested, and in addition, the pressurizing mechanism 3 comprises at least two independently arranged pressurizing blocks 31 and an elastic piece 32 connected to the pressurizing blocks 31, so that each pressurizing block 31 can be better attached to the surface to be tested of the workpiece 2 to be tested when the surface to be tested of the workpiece 2 to be tested is not located on the same plane.

Specifically, since the surfaces to be tested of the workpieces 2 to be tested may not be located on the same plane, in order to better attach each pressurizing block 31 to the surface to be tested of the workpiece 2 to be tested, preferably, the pressurizing mechanism 3 includes a connecting plate 33 for connecting each pressurizing block 31, a guide seat 34 is fixed at a position of the connecting plate 33 corresponding to each pressurizing block 31, the guide seat 34 has a guide hole 341 penetrating up and down, each pressurizing block 31 is correspondingly provided with a vertically-oriented limiting groove 311 and is connected to the guide hole 341 through a guide rod 35, the guide rod 35 can move up and down along the guide hole 341 together with each corresponding pressurizing block 31, and the elastic member 32 is connected to each corresponding pressurizing block 31 through the guide rod 35, so that each pressurizing block 31 always has a tendency of pushing open the corresponding surface to be tested. When the surface to be measured corresponding to the pressing block 31 is higher than the reference surface of the surface to be measured, the corresponding pressing block 31 can move upward along the guide hole 341 together with the guide rod 35, and at this time, the elastic member 32 can be in a pressed state, so that the corresponding pressing block 31 can be tightly attached to the surface to be measured of the workpiece 2 to be measured. In order to better realize the connection of each pressurizing block 31 to the connecting plate 33, the guide rod 35 of the present embodiment includes a lower end 353 extending into the limiting groove 311 of each pressurizing block 31 and an upper end passing through the guide hole 341 and exposed outside thereof, and the upper end 352 of the guide rod 35 is further connected to the connecting plate 36 such that the guide rod 35 is connected to the connecting plate 33 together with each connected pressurizing block 31. Correspondingly, an extension portion 351 extends radially from a portion of the lower end of the guide rod 35 adjacent to the opening of the limiting groove 311, the elastic member 32 is a compression spring sleeved on the guide rod 35, the lower end of the compression spring is connected to the extension portion 351, and the upper end of the compression spring is connected to the guide seat 34, so that the connection of the elastic member 32 is realized. Certainly, in order to more accurately realize that each pressurizing block 31 is pressed down to the surface to be measured of the workpiece 2 to be measured, the connecting plate 33 may be further provided with a detecting piece 4 capable of preventing each pressurizing block 31 from being excessively pressed down to the surface to be measured of the workpiece 2 to be measured, wherein the detecting piece 4 is considered from a simple structure, the detecting piece 4 is rod-shaped, and comprises a detecting head 41 and a rod tail 42, the detecting head 41 is higher than each pressurizing block 31, and correspondingly, the connecting plate 33 is further provided with a connecting seat 330 for connecting the rod tail 42. Finally, the pressurizing mechanism 3 further comprises a driving portion 37 capable of adjusting the distance between the connecting plate 33 and each pressurizing block 31 relative to the workpiece 2 to be tested, the testing area 1 is further provided with a rack 11 for connecting the driving portion 37, the rack 11 is provided with a guide rail 12 distributed towards the direction of the workpiece 2 to be tested, correspondingly, the driving portion 37 comprises an air cylinder for driving a first support 38 on the guide rail 12 to move towards the workpiece 2 to be tested, a piston rod of the air cylinder is fixedly connected with a second support 39 connected to the connecting plate 33, the second support 39 is fixedly connected with the first support 38, and correspondingly, the rack 11 is further provided with a resistance tester 5 for testing the resistance of the workpiece 2 to be tested.

To sum up, the testing process of the resistance testing device of the present embodiment is as follows: firstly, positioning a workpiece 2 to be tested by using a positioning mechanism to enable the surface to be tested of the workpiece 2 to be tested to face upwards; and then the relative distance between the pressurizing mechanism 3 and the workpiece 2 to be tested is adjusted through the air cylinder, and the detecting piece 4 which is arranged on the connecting plate 33 in the pressurizing mechanism 3 and can prevent each pressurizing block 31 from being excessively pressed down to the surface to be tested of the workpiece 2 to be tested ensures that each pressurizing block 31 can be attached to the surface to be tested of the workpiece 2 to be tested accurately, when the surface to be tested of the workpiece 2 to be tested is not positioned on the same plane, each pressurizing block 31 can be better attached to the surface to be tested of the workpiece 2 to be tested due to the arrangement of the elastic piece 32, finally, the pressurizing mechanism 3 is utilized to apply a detecting voltage to the surface to be tested, whether the electric leakage from the surface to be tested of the workpiece 2 to be tested to the negative electrode exists is monitored through the corresponding resistance tester 5, and whether the insulating property of the workpiece 2 to be tested meets the requirements is tested.

Claims

1. A resistance testing apparatus comprising a test area (1) for receiving a workpiece (2) to be tested and performing a resistance measurement, characterized in that: the test device is characterized in that a pressurizing mechanism (3) capable of pressurizing a surface to be tested of a workpiece (2) to be tested is further arranged in the test area (1), the pressurizing mechanism (3) comprises at least two independently arranged pressurizing blocks (31) and an elastic piece (32) connected to the pressurizing blocks (31), and the elastic pieces (32) enable the corresponding pressurizing blocks (31) to always have the tendency of pushing open the corresponding surface to be tested.

2. The resistance testing apparatus of claim 1, wherein: the pressurizing mechanism (3) comprises a connecting plate (33) used for connecting each pressurizing block (31), a guide seat (34) is fixed on the position of the connecting plate (33) corresponding to each pressurizing block (31), the guide seat (34) is provided with a guide hole (341) which is through up and down, each pressurizing block (31) is correspondingly provided with a limit groove (311) which runs up and down and is connected into the guide hole (341) through a guide rod (35), the guide rod (35) can move up and down along the guide hole (341) together with the corresponding pressurizing block (31), and the elastic piece (32) is connected onto the corresponding pressurizing block (31) through the guide rod (35), so that each pressurizing block (31) always has the tendency of pushing open the corresponding surface to be measured.

3. The resistance testing apparatus according to claim 2, wherein: the guide rod (35) comprises a lower end part (353) extending into the limiting groove (311) of each pressurizing block (31) and an upper end part penetrating through the guide hole (341) and exposed outside, and the upper end part (352) of the guide rod (35) is further connected with a connecting piece (36), so that the guide rod (35) and each connected pressurizing block (31) are connected to the connecting plate (33) together.

4. The resistance testing apparatus of claim 3, wherein: an extension part (351) extends along the radial direction from the part of the lower end part (353) of the guide rod (35) adjacent to the opening of the limiting groove (311), the elastic part (32) is a compression spring sleeved on the guide rod (35), the lower end of the compression spring is connected to the extension part (351), and the upper end of the compression spring is connected to the guide seat (34).

5. The resistance testing apparatus according to any one of claims 2 to 4, wherein: the connecting plate (33) is also provided with a detection piece (4) which can prevent each pressurizing block (31) from being excessively pressed down to the surface to be detected of the workpiece (2) to be detected.

6. The resistance testing apparatus of claim 5, wherein: the detection piece (4) is rod-shaped and comprises a detection head (41) and a rod tail (42), the detection head (41) is higher than the pressing blocks (31) and correspondingly provided with a connecting seat (330) for connecting the rod tail (42) with the connecting plate (33).

7. The resistance testing apparatus of claim 6, wherein: the pressurizing mechanism (3) further comprises a driving portion (37) capable of adjusting the distance between the connecting plate (33) and each pressurizing block (31) relative to the workpiece (2) to be tested, correspondingly, the testing area (1) is further provided with a rack (11) for connecting the driving portion (37), a guide rail (12) distributed towards the direction of the workpiece (2) to be tested is arranged on the rack (11), correspondingly, the driving portion (37) comprises a cylinder for driving a first support (38) on the guide rail (12) to move towards the workpiece (2) to be tested, a piston rod of the cylinder is fixedly connected with a second support (39) on the connecting plate (33), and the second support (39) is fixedly connected with the first support (38).

8. The resistance testing apparatus of claim 7, wherein: the rack (11) is also provided with a resistance tester (5) for testing the resistance of the workpiece (2) to be tested.