Contact resistance testing device of rivet type electrical contact

Abstract

The invention discloses a contact resistance testing device of a rivet-type electrical contact, which comprises a machine table and a three-coordinate suspension sliding table arranged on the machine table, and is characterized in that a detection clamp is arranged at the end part of the three-coordinate suspension sliding table, a detection element is arranged on the detection clamp, a base is also fixed on the machine table, a detection area is arranged on the base, and the detection element is arranged in the detection area. A plurality of mounting positions for mounting the electric contacts are arranged in the detection area, the detection element is sequentially contacted with the plurality of electric contacts one by one to form a contact resistor of a detection path, and the detection element can be ensured to be accurately contacted with the electric contacts on the detection area through high-precision motion control of the three-coordinate suspension sliding table; the design of the standardized detection area enables each electrical contact to have a unified space coordinate positioning reference, and the differentiated pressing force between the detection element and the surface of the electrical contact is reduced, so that the repeatability and consistency of each test are ensured, the contact force applied during each contact is kept constant, and the difference of the repeated precision of the test positions of different batches of contacts is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of contact resistance testing of contact materials, and particularly to a contact resistance testing device for rivet-type electrical contacts. Background Art

[0002] During the manufacturing and maintenance of electronic devices, the contact resistance of electrical contacts is an important indicator for measuring the performance of connectors. Excessive contact resistance can lead to problems such as signal attenuation and heating, affecting the stability and reliability of the devices.

[0003] In the prior art, the contact resistance testing device for electrical contacts includes a machine table, on which a carrier and a detection element are provided. The detection elements are in contact with the surfaces of the electrical contacts one by one to measure the contact resistance of the electrical connectors.

[0004] However, in actual use, when conducting comparative tests on multiple batches of contact materials, there are differences in the pressure applied by the detection elements against the surfaces of the electrical contacts each time. As a result, the non-uniform pressing force is difficult to ensure the uniformity of the contact pressure of each electrical contact, thereby affecting the magnitude of the contact resistance. Moreover, the lack of a standardized positioning reference leads to poor comparability of test data between different batches of electrical contacts. Summary of the Invention

[0005] To ensure the uniformity of the pressure applied by the detection elements against each electrical contact, a contact resistance testing device for rivet-type electrical contacts is provided.

[0006] The above object of the present invention is achieved by the following technical solutions: A contact resistance testing device for rivet-type electrical contacts includes a machine table and a three-coordinate floating slide provided on the machine table. It is characterized in that a detection fixture is installed at the end of the three-coordinate floating slide, a detection element is installed on the detection fixture, a base is also fixed on the machine table, a detection area is provided on the base, and a plurality of installation positions for installing electrical contacts are provided in the detection area. The detection element is in contact with a plurality of electrical contacts one by one to form the contact resistance of the detection path.

[0007] By adopting the above technical solutions, a plurality of installation positions for installing electrical contacts are provided on the surface of the detection area, and multiple electrical contacts can be tested simultaneously. Through the high-precision motion control of the three-coordinate floating slide, it is ensured that the detection element can accurately contact the electrical contacts on the detection area. The standardized design of the detection area enables each electrical contact to have a unified spatial coordinate positioning reference. Combined with the digital displacement control system, the non-uniform pressing force between the detection element and the surface of the electrical contact is reduced, thereby ensuring the repeatability and consistency of each test, ensuring that the contact force applied each time remains constant, and reducing the difference in the repeatability accuracy of the test positions of different batches of contacts.

[0008] Optionally, sliding grooves are respectively formed on both sides of the detection area, and slide rails slidably connected in the sliding grooves are respectively arranged on both sides of the base.

[0009] By adopting the above technical solution, the slide rail design makes the installation and disassembly of the detection area more convenient, facilitating maintenance and replacement. When it is necessary to clean, repair or replace the detection area, the operator can easily slide the detection area to perform relevant operations, improving the maintenance efficiency.

[0010] Optionally, a fixing member is arranged on the base, and a handle is movably arranged on the fixing member. One end of the handle abuts against the detection area, and the other end of the handle is arranged in a suspended manner.

[0011] By adopting the above technical solution, the operator can quickly operate the handle to fix the detection area, without the need for an additional locking device, preventing accidental sliding of the detection area from causing damage to the equipment.

[0012] Optionally, the detection area is in a long strip shape. A slideway for the power supply contact to slide is arranged in the detection area. Feeding ports and discharging ports are respectively arranged at both ends of the detection area. A feeding vibrating disk is arranged on the machine table. A feeding guide rail is arranged between the feeding vibrating disk and the feeding port in a top-down manner. A partition assembly for controlling the power supply contacts to pass through one by one is installed at one end of the feeding guide rail facing the feeding vibrating disk; a driving assembly for driving the power supply contacts from the feeding port towards the discharging port is installed in the detection area. A plurality of positioning assemblies perpendicular to the direction from the feeding port towards the discharging port are also arranged in the detection area. The positioning assembly includes a positioning cylinder, and a positioning member for positioning the power supply contact is fixed on the piston rod of the positioning cylinder.

[0013] By adopting the above technical solution, the operator first places the power supply contacts to be tested in the feeding vibrating disk. The feeding vibrating disk vibrates and arranges the scattered power supply contacts to be tested neatly. The partition assembly conveys the power supply contacts to the feeding guide rail one by one. The feeding guide rail arranged from top to bottom slides the power supply contacts to be tested to the driving assembly. The driving assembly drives the power supply contacts to be tested to be conveyed from the feeding port towards the discharging port. The operator starts the positioning cylinders in each group of positioning assemblies one by one from the discharging port to the feeding port direction, so that the positioning cylinders drive the positioning members to limit and fix each power supply contact to be tested, thereby ensuring that the power supply contacts to be tested are evenly distributed in the slideway at intervals. Then the detection element contacts the surfaces of multiple power supply contacts one by one for detection, thus realizing the automatic feeding process of the power supply contacts to be tested. The operator no longer needs to use tweezers to place the power supply contacts in the installation position, reducing the operation time of the operator and improving the detection efficiency of the power supply contacts.

[0014] Optionally, the number of the positioning assemblies in the same group is two. The two positioning cylinders are respectively located on both sides of the slideway, and the positioning member is located above the driving assembly.

[0015] By adopting the above technical solution, the two positioning components are respectively located on both sides of the slideway, and can limit the electric contact from both sides, effectively limiting the electric contact in the horizontal direction, so that the electric contact always remains on the predetermined detection path during the sliding process, avoiding the situation of left and right deviation of the electric contact, thereby improving the accuracy and precision of positioning.

[0016] Optionally, the end of the positioning member away from the positioning cylinder is provided as an arc surface, and this arc surface is in contact with the circumferential side wall of the electric contact.

[0017] By adopting the above technical solution, a larger contact area and a more uniform pressure distribution can be provided. When the electric contact is subjected to the acting force of the driving component during the detection process, the arc surface can better adapt to the shape and minute position changes of the electric contact, thereby ensuring that the electric contact is always in a stable positioning state and reducing the detection errors that may be caused by position fluctuations.

[0018] Optionally, the driving component includes a driving motor arranged in the base, and a driving rope for driving the electric contact to transmit is arranged on the output shaft of the driving motor.

[0019] By adopting the above technical solution, the driving rope can drive the electric contact to move while moving linearly along the slideway. At the same time, the driving rope provides support and lifting for the bottom of the electric contact, which can reduce the friction between the electric contact and the slideway and is more convenient for the transmission and conveying of the electric contact.

[0020] Optionally, the positioning component further includes an infrared sensor. The infrared sensors are sequentially arranged on multiple groups of positioning members along the driving direction of the driving rope. In adjacent two groups of positioning components, the infrared sensor in the group away from the feeding port is used to control the opening and closing of the positioning cylinder and the partition cylinder in the group close to the feeding port, and the infrared sensor in the group close to the detection port is used to control the opening and closing of the feeding vibrating disk and the driving motor.

[0021] By adopting the above technical solution, by sequentially arranging infrared sensors on multiple groups of positioning members, the positioning component sequentially blocks the electric contact from the direction of the discharge port towards the feeding port. At the same time, the infrared sensor on the side close to the feeding port is electrically connected to the feeding vibrating disk and the driving rope. When the infrared sensor on the side close to the feeding port is blocked by the electric contact, it will further control the feeding vibrating disk and the driving motor to close, realizing the fully automated operation process of the entire testing device without manual intervention. This not only improves the production efficiency but also reduces the influence of human factors on the detection results, ensuring the accuracy and consistency of the detection results.

[0022] Optionally, partition plates are rotatably connected to the inner side walls of the feeding guide rail, and two partition cylinders are fixed on the machine table. The two partition cylinders are respectively located on both sides of the feeding guide rail. One side of the two partition plates facing each other abuts against the circumferential side wall of the electrical contact, and the other sides of the two partition plates are respectively connected to the piston rods of the two partition cylinders.

[0023] By adopting the above technical solution, by rotatably connecting partition plates to the inner side walls of the feeding guide rail and connecting them to the piston rods of the partition cylinders, precise control of the conveying process of the electrical contacts can be achieved. The partition plates can be accurately opened or closed as needed, isolating the electrical contacts one by one and sending them to the subsequent detection area in an orderly manner, avoiding mutual interference and chaos between the electrical contacts, and ensuring the accuracy and reliability of the detection process.

[0024] Optionally, a recovery cylinder is arranged at the discharge port, and the opening of the recovery cylinder is located below the driving assembly.

[0025] By adopting the above technical solution, the electrical contacts after detection can directly fall into the recovery cylinder through the transmission of the driving assembly, eliminating the need for operators to use tweezers to remove the electrical contacts one by one. The automated collection of the detected electrical contacts reduces the participation of operators and improves production efficiency.

[0026] In summary, the present invention has at least the following beneficial effects: 1. Through the high-precision motion control of the three-coordinate floating slide table, it is ensured that the detection element can accurately contact the electrical contact on the detection area, reducing the differential contact pressure between the detection element and the surface of the electrical contact, thereby ensuring the repeatability and consistency of each test, ensuring that the contact force applied during each contact remains constant, and reducing the difference in the repeated accuracy of the test positions of different batches of contacts.

[0027] 2. By adopting automated transmission devices such as a feeding vibrating disk, a feeding guide rail, a driving assembly, and a positioning assembly, automatic arrangement, transmission, and fixation of the electrical contacts are realized. The electrical contacts can be automatically transmitted to the positioning member. When the positioning members above the driving rope all abut against the electrical contacts, the detection element will detect the detection ends of the electrical contacts one by one. After the detection is completed, they are directly collected through the recovery cylinder, realizing the full automation of the test process, reducing the participation of operators, and improving production efficiency. Description of the Drawings

[0028] Figure 1 It is an exploded schematic view of a contact resistance testing device for rivet-type electrical contacts; Figure 2 is Figure 1 a partial enlarged view at A; Figure 3 is an installation schematic view of a partial structure of the contact resistance testing device in the second embodiment; Figure 4 is Figure 3 The partial enlarged view at B; Figure 5 is the sectional view of the partition component; Figure 6 is the structural schematic diagram of the detection area in the second embodiment; Figure 7 is Figure 6 The partial enlarged view at C; Figure 8 is the partial structural schematic diagram of the contact resistance test device in the second embodiment; Figure 9 is the sectional view of the detection area in the second embodiment; Figure 10 is the structural schematic diagram of the positioning component.

[0029] Reference numerals: 1, machine table; 2, electrical contact; 21, detection end; 22, limiting end; 3, three-coordinate floating slide; 31, first slide bar; 32, second slide bar; 33, third slide bar; 34, detection fixture; 35, detection element; 4, base; 41, slide rail; 42, fixing member; 43, handle; 5, detection area; 51, chute; 52, installation position; 53, slideway; 54, feed inlet; 55, discharge outlet; 56, recovery cylinder; 6, feeding vibrating disk; 61, feeding guide rail; 7, partition component; 71, partition board; 72, partition cylinder; 73, return spring; 8, driving component; 81, driving motor; 82, driving rope; 9, positioning component; 91, positioning cylinder; 92, positioning member; 93, infrared sensor. Detailed implementation manners

[0030] The following is further introduced in detail in conjunction with the accompanying drawings of the specification: Embodiment

[0031] As shown in the attached Figure 1 figure, the contact resistance test device for the rivet-type electrical contact 2 includes a machine table 1 and a three-coordinate floating slide 3 and a base 4 fixed on the upper surface of the machine table 1.

[0032] The three-coordinate floating slide 3 includes a first slide bar 31, a second slide bar 32 and a third slide bar 33. The first slide bar 31 is horizontally fixedly connected to the upper surface of the machine table 1. The second slide bar 32 is perpendicular to the first slide bar 31, and the bottom of the second slide bar 32 is slidably connected to the upper surface of the first slide bar 31. The third slide bar 33 is perpendicular to the second slide bar 32, and the top of the third slide bar 33 is slidably connected to the side of the second slide bar 32. A detection fixture 34 is fixed on the bottom of the third slide bar 33, and the detection fixture 34 is slidably connected to the bottom of the third slideway 53. A detection element 35 is installed at the end of the detection fixture 34 facing the base 4.

[0033] As shown in the attachedFigure 1 and attached Figure 2 As shown, an electrical contact 2 is installed inside the detection element 35. The shape of the electrical contact 2 is rivet-shaped. The electrical contact 2 includes a detection end 21 and a limit end 22. The outer diameter of the detection end 21 is greater than the outer diameter of the limit end 22. The limit end 22 is fixed inside the detection element 35, and the detection end 21 abuts against the bottom of the detection element 35.

[0034] The base 4 is located below the detection fixture 34. A detection area 5 is provided on one side of the base 4 facing the detection fixture 34. The shape of the detection area 5 is strip-shaped. Slide grooves 51 are respectively opened on both sides of the detection area 5. Slide rails 41 that are slidably connected inside the slide grooves 51 are respectively provided on both sides of the base 4 facing the detection area 5, making the installation and disassembly of the detection area 5 more convenient and facilitating maintenance and replacement.

[0035] Fixing members 42 are also fixed on both sides of the base 4. A handle 43 with a movable fit is provided on the fixing member 42. One end of the handle 43 abuts against the fixing member 42, and the other end of the handle 43 is suspended. Through the handle 43, an operator can quickly operate the handle 43 to fix the detection area 5 without the need for an additional locking device, preventing accidental sliding of the detection area 5 from causing damage to the equipment.

[0036] A plurality of installation positions 52 for installing the power supply contacts 2 are provided on the upper surface of the detection area 5, and the adjacent installation positions 52 are arranged at equal intervals. The limit ends 22 of the electrical contacts 2 respectively abut against the inner walls of the installation positions 52, and the detection ends 21 of the electrical contacts 2 all abut against the upper surface of the detection area 5. Subsequently, the detection element 35 contacts the detection ends 21 of the plurality of electrical contacts 2 one by one in sequence to form a detection path and measure the contact resistance. Embodiment

[0037] This second embodiment is an improvement made on the basis of the first embodiment. Other structures are the same as those of the embodiment and will not be described in detail here.

[0038] As attached Figure 3 and attached Figure 4 As shown, the shape of the detection area 5 is strip-shaped. A slideway 53 for the power supply contact 2 to slide is provided inside the detection area 5. The limit end 22 of the electrical contact 2 is located inside the slideway 53, and the detection end 21 of the electrical contact 2 overlaps and slides on the surface of the detection area 5. Feeding ports 54 and discharging ports 55 are respectively provided at both ends of the detection area 5, and the slideway 53 is respectively communicated with the feeding port 54 and the discharging port 55.

[0039] A feeding vibrating disk 6 is installed on the upper surface of the machine table 1. The feeding vibrating disk 6 is located on one side of the feeding port 54. A spiral track is provided on the feeding vibrating disk 6. A plurality of electrical contacts 2 to be measured are placed inside the feeding vibrating disk 6, and the scattered electrical contacts 2 are arranged neatly according to the transportation of the track through the vibration of the feeding vibrating disk 6.

[0040] A top-down feeding guide rail 61 is installed between the output end of the loading vibration disk 6 and the feed port 54. One end of the feeding guide rail 61 located at the output end of the loading vibration disk 6 is higher than one end of the feeding guide rail 61 located at the slide 53. One end of the feeding guide rail 61 is connected to the output end of the loading vibration disk 6, and the other end of the feeding guide rail 61 is connected to the slide 53. The shape of the feeding guide rail 61 can fit the electric contact 2 to slide in the feeding guide rail 61.

[0041] As attached Figure 5 As shown, a partition assembly 7 is installed at one end of the feeding guide rail 61 facing the loading vibration disk 6. The partition assembly 7 includes a partition plate 71 and a partition cylinder 72. There are two partition plates 71. The two partition plates 71 are rotatably connected to the two inner walls of the feeding guide rail 61, and the opposite sides of the two partition plates 71 are respectively abutted against the circumferential side walls of the limiting ends 22 of the electric contacts 2, and the two partition plates 71 extend back to back with one end facing away from the output end of the loading vibration disk 6, which can more effectively guide the electric contacts 2 into the feeding guide rail 61.

[0042] There are two partition cylinders 72, both of which are fixed on the machine platform 1, and the two partition cylinders 72 are respectively located on both sides of the feeding guide rail 61, and reset springs 73 are respectively fixed on the piston rods of the two partition cylinders 72, and the other ends of the two reset springs 73 are respectively fixedly connected to the opposite sides of the two partition plates 71. When the partition cylinder 72 drives the piston rod to extend and retract, it will simultaneously drive the partition plate 71 to stretch and retract, so that the neatly arranged electric contacts 2 on the feeding vibration plate 6 can be transported one by one to the feeding guide rail 61.

[0043] As attached Figure 6 and attached Figure 7 As shown, a driving component 8 and a positioning component 9 are also provided in the detection area 5. The driving component 8 includes a driving motor 81 and a driving rope 82. There are two driving motors 81. The two driving motors 81 are relatively parallel. The distribution direction of the two driving motors 81 is the same as the groove direction of the slide 53. The driving rope 82 is located in the slide 53. The driving rope 82 is respectively connected to the output shafts of the two driving motors 81, and the surface of the driving rope 82 is in contact with the bottom of the limiting end 22 of the electric contact 2. The driving rope 82 is used to drive the electric contact 2 to rotate and transport in the direction from the feed port 54 to the discharge port 55.

[0044] As attached Figure 8 and attached Figure 9 As shown, the positioning assembly 9 includes a positioning cylinder 91 and a positioning member 92. The positioning cylinders 91 are arranged in multiple groups, and the multiple groups of positioning cylinders 91 are arranged in sequence along the driving direction of the driving rope 82. The number of positioning cylinders 91 in the same group is set to two, and the two positioning cylinders 91 in the same group are relatively parallel.

[0045] The material of the positioning member 92 here is a glued material. The positioning members 92 are arranged in multiple groups, and the multiple groups of positioning members 92 are sequentially arranged along the driving direction of the driving rope 82. The multiple groups of positioning members 92 are respectively and fixedly arranged on multiple groups of positioning cylinders 91. The number of positioning members 92 in the same group is two. One ends of the two positioning members 92 are respectively fixedly connected to the piston rods of the two positioning cylinders 91 in the same group. The other ends of the two positioning members 92 are respectively abutted against the circumferential side wall of the limiting end 22 of the electrical contact 2. And the side of the positioning member 92 that abuts against the limiting end 22 is set as an arc surface. When the driving rope 82 drives the electrical contact 2 for transmission, the circumferential side wall of the limiting end 22 of the electrical contact 2 can be mutually attached to the arc surface, so as to limit the displacement of the limiting end 22 of the electrical contact 2 in the direction perpendicular to the transmission direction of the driving rope 82.

[0046] As shown in the appendix Figure 9 and the appendix Figure 10 As shown, the positioning assembly 9 further includes a plurality of infrared sensors 93. The plurality of infrared sensors 93 are respectively sequentially arranged along the transmission direction of the driving rope 82 on multiple groups of positioning members 92. The infrared sensors 93 are respectively installed on the side of the positioning member 92 set as an arc surface. The detection ports of the infrared sensors 93 face the direction of the feeding port 54. Among the adjacent two groups of positioning assemblies 9, the infrared sensors 93 in the group far from the feeding port 54 are used to control the opening and closing of the positioning cylinder 91 and the partition cylinder 72 in the group close to the feeding port 54, and the infrared sensors 93 in the group close to the feeding port 54 are used to control the opening and closing of the feeding vibrating disk 6 and the driving motor 81.

[0047] A recovery cylinder 56 is arranged on the side of the detection area 5 close to the discharge port 55, and the opening of the recovery cylinder 56 is located below the driving rope 82. After the detection of the detection end 21 of the electrical contact 2 is completed, the driving rope 82 will transport the electrical contact 2 into the recovery cylinder 56, without manual operation by the operator, realizing the automatic collection of the detected electrical contacts 2.

[0048] Working principle The operator places the scattered electrical contacts 2 into the feeding vibrating disk 6. The feeding vibrating disk 6 arranges the electrical contacts 2 neatly through vibration. After the feeding vibrating disk 6 arranges the electrical contacts 2 neatly, the operator presses the start button of the partition cylinder 72 again. Then the expansion and contraction of the piston rod of the partition cylinder 72 will drive the partition plate 71 to move relatively, so that the electrical contacts 2 pass through the partition assembly 7 one by one and are transported to the driving rope 82 from the feeding guide rail 61.

[0049] The driving rope 82 drives the limiting end 22 of the electrical contact 2 for transmission, enabling the detection end 21 of the electrical contact 2 to slide and convey along the upper surface of the detection area 5. When the electrical contact 2 abuts against the positioning member 92 on the side close to the discharge port 55, the infrared sensor 93 on the positioning member 92 is blocked by the electrical contact 2. Then, the infrared sensor 93 sends electrical signals to the moving positioning cylinder 91 and the partition cylinder 72 of the previous group, controlling the piston rod of the positioning cylinder 91 of the previous group to pop out and controlling the piston rod of the partition cylinder 72 to extend and retract. As a result, the next electrical contact 2 is conveyed from the feeding guide rail 61 through the partition assembly 7 to the driving rope 82, and this automated operation is repeated to ensure that the electrical contacts 2 are evenly distributed on the driving rope 82.

[0050] When the partition assembly 7 controls the last electrical contact 2 to be conveyed from the feeding guide rail 61 to the driving rope 82, the electrical contact 2 abuts against the positioning member 92 on the side close to the feeding port 54. The positioning member 92 abuts against the circumferential side wall of the electrical contact 2, so that the infrared sensor 93 on the side close to the feeding port 54 is blocked from detecting signals by the electrical contact 2. The infrared sensor 93 on the side close to the feeding port 54 sends electrical signals to the driving rope 82 and the feeding vibrating disk 6, thereby pausing the operation of the driving rope 82 and the feeding vibrating disk 6. Subsequently, the detection element 35 contacts the detection ends 21 of multiple electrical contacts 2 one by one in sequence to form a detection path and measure the contact resistance.

[0051] After the detection is completed, the operator closes the positioning cylinder 91 and starts the driving motor 81, enabling the driving motor 81 to continue driving the driving rope 82 to drive the electrical contacts 2 for transmission, so that the detected electrical contacts 2 are conveyed into the recovery cylinder 56. Subsequently, the positioning cylinder 91 and the partition cylinder 72 on the side close to the discharge port 55 are started again for the detection of the next batch of electrical contacts 2. The entire transmission and detection process realizes automated operation, reduces the participation of operators, and improves the detection efficiency.

[0052] In summary, through the above design, the present invention provides a contact resistance testing device for rivet-type electrical contacts 2. By means of high-precision motion control, automated transmission and detection, the detection efficiency and accuracy are improved. It not only optimizes the production process but also reduces the manual intervention and maintenance costs through automated control, providing a more efficient and reliable solution for modern production lines.

[0053] This specific embodiment is only an explanation of the present invention and is not a limitation thereof. Those skilled in the art can make modifications to this embodiment without creative contributions according to needs after reading this specification, but as long as they are within the scope protected by the present invention, they are protected by the patent law.

Claims

1. A contact resistance testing device for a rivet-type electrical contact (2), comprising a machine platform (1) and a three-coordinate suspended slide (3) arranged on the machine platform (1), characterized in that: A detection fixture (34) is installed at the end of the three-coordinate suspension slide (3), and a detection element (35) is installed on the detection fixture (34). A base (4) is also fixed on the machine (1), and a detection area (5) is provided on the base (4). The detection area (5) is provided with mounting positions (52) for mounting a plurality of power supply contacts (2). The detection element (35) contacts the plurality of power contacts (2) one by one in sequence to form a contact resistance of the detection path.

2. The contact resistance testing device of the rivet-type electrical contact (2) according to claim 1, characterized in that: Slide grooves (51) are respectively provided on both sides of the detection area (5), and slide rails (41) slidably connected to the slide grooves (51) are respectively provided on both sides of the base (4).

3. The contact resistance testing device of the rivet-type electrical contact (2) according to claim 2, characterized in that: The base (4) is provided with a fixing member (42), and a handle (43) is movably provided on the fixing member (42), one end of the handle (43) is in contact with the detection area (5), and the other end of the handle (43) is suspended in the air.

4. The contact resistance testing device of the rivet-type electrical contact (2) according to claim 1, characterized in that: The detection area (5) is in the shape of an elongated strip. A slideway (53) for the power contact (2) to slide is provided in the detection area (5). A feed port (54) and a discharge port (55) are provided at both ends of the detection area (5). A feeding vibration plate (6) is provided on the machine platform (1). A feeding guide rail (61) is provided from top to bottom between the feeding vibration plate (6) and the feeding port (54). A control power contact (2) is installed at one end of the feeding guide rail (61) facing the feeding vibration plate (6). ) passing through a partition assembly (7) one by one; a driving assembly (8) for driving the electric contact (2) from the feed inlet (54) toward the discharge outlet (55) is installed in the detection area (5); a plurality of positioning assemblies (9) perpendicular to the direction from the feed inlet (54) toward the discharge outlet (55) are also arranged in the detection area (5); the positioning assembly (9) includes a positioning cylinder (91); a positioning piece (92) for positioning the electric contact (2) is fixed on the piston rod of the positioning cylinder (91).

5. The contact resistance testing device of the rivet-type electrical contact (2) according to claim 4, characterized in that: The number of the positioning assemblies (9) in the same group is two, the two positioning cylinders (91) are respectively located on both sides of the slideway (53), and the positioning member (92) is located above the driving assembly (8).

6. The contact resistance testing device of the rivet-type electrical contact (2) according to claim 5, characterized in that: One end of the positioning member (92) away from the positioning cylinder (91) is arranged as an arc surface, and the arc surface abuts against the circumferential side wall of the electric contact (2).

7. The contact resistance testing device of the rivet-type electrical contact (2) according to claim 4, characterized in that: The driving assembly (8) comprises a driving motor (81) arranged in the base (4), and a driving rope (82) for driving the electric contact (2) is arranged on the output shaft of the driving motor (81).

8. The contact resistance testing device of the rivet-type electrical contact (2) according to claim 7, characterized in that: The positioning assembly (9) further comprises an infrared sensor (93), wherein the infrared sensor (93) is sequentially arranged on a plurality of groups of positioning members (92) along the driving direction of the driving rope (82), and in two adjacent groups of positioning assemblies (9), the infrared sensor (93) in the group far from the feed port (54) is used to control the opening and closing of the positioning cylinder (91) and the partition cylinder (72) in the group close to the feed port (54), and the infrared sensor (93) in the group close to the detection port is used to control the opening and closing of the feeding vibration plate (6) and the driving motor (81).

9. The contact resistance testing device of the rivet-type electrical contact (2) according to claim 4, characterized in that: Partition plates (71) are rotatably connected to the two inner side walls of the feeding guide rail (61), and two partition cylinders (72) are fixed to the machine platform (1). The two partition cylinders (72) are respectively located on the two sides of the feeding guide rail (61), and the opposite sides of the two partition plates (71) are in contact with the circumferential side walls of the electric contact (2), and the opposite sides of the two partition plates (71) are respectively connected to the piston rods of the two partition cylinders (72).

10. The contact resistance testing device of the rivet-type electrical contact (2) according to claim 4, characterized in that: A recovery cylinder (56) is provided at the discharge port (55), and the opening of the recovery cylinder (56) is located below the drive assembly (8).

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