Equipment for testing mechanical life of contactor

Abstract

The invention discloses equipment for testing the mechanical life of a contactor, and particularly relates to the technical field of direct current contactors, the equipment comprises a contactor testing machine and the contactor, the surface of a tool plate is provided with an installation mechanism for installing or replacing a test probe, and through the installation mechanism and an oil pressure buffer, the test probe is installed or replaced. The air cylinder is started to control the tool plate to move downwards, one end of the probe is made to make contact with the contactor, the position arrangement of the probe is related to whether all installation point positions of the contactor to be detected are qualified or not, synchronous detection of multiple stations can be achieved according to the multiple sets of grooves, in the falling detection process, one end of the probe makes contact with the contactor, and the detection accuracy is improved. A sensor or an inductor on the probe is utilized, an alarm can be given when an object to be detected is detected to be unqualified, the error detection probability is reduced by using the double probes, the influence caused by vibration during testing is reduced by using the oil pressure buffer, and meanwhile, the probe is adopted for detection, so that a wiring harness connection mode is not needed, and the remodeling time is further shortened.

Description

Technical Field

[0001] The present application relates to the technical field of DC contactors, and more specifically, to a device for testing the mechanical life of a contactor. Background Art

[0002] A DC contactor is a contactor whose core is controlled by a DC coil. Its load can be either DC or AC. Unlike AC contactors, the core of a DC contactor is free of eddy currents and is therefore typically made of a round shape, made of mild steel or industrial pure iron. Because the DC contactor's attracting coil is energized by DC, there is no inrush starting current and no violent core impact. This ensures a long lifespan and makes it suitable for applications with frequent starts and stops. As a critical switching element in industrial control systems, the mechanical lifespan of the contactor (e.g., millions of operations) directly impacts equipment reliability and maintenance costs. According to international standards, mechanical life testing must simulate continuous operation under actual operating conditions.

[0003] However, traditional tooling testing may be directly affected by the presence or absence of an oxide layer on the probe surface. It is necessary to plug in multiple connectors and connect wiring harnesses to ensure the accuracy of the current on-off signal acquisition. However, the wiring harness connection is relatively complicated and requires the use of aging life testers corresponding to multiple workstations. At the same time, two tools are required to keep moving and transporting synchronously.

[0004] Therefore, in order to solve the above problems, a device for testing the mechanical life of a contactor is proposed. Summary of the Invention

[0005] The purpose of this application is to provide a device for testing the mechanical life of a contactor.

[0006] The present application provides a device for testing the mechanical life of a contactor using the following technical solutions:

[0007] A device for testing the mechanical life of a contactor includes a contactor testing machine and a contactor. A cylinder is fixedly connected to the surface of the contactor testing machine, one end of the cylinder is fixedly connected to a tooling plate, multiple groups of grooves are provided inside the contactor testing machine, and the inner walls of the grooves are slidably connected to the contactors. One side of the tooling plate is provided with a protective mechanism to prevent the risk of pressure on the operator's hands. The surface of the tooling plate is provided with an installation mechanism for installing or replacing a test probe, and the surface of the groove is provided with a fixing mechanism for fixing contactors of different sizes.

[0008] By adopting the above technical solution, the starting cylinder can control the up and down movement of the tooling plate. The tooling plate can be isolated through the protective mechanism to avoid the risk of pressure on the operator's hands. The installation mechanism can be used to facilitate the replacement of the probe, and the use of double probes can reduce the probability of misdetection.

[0009] Preferably, the protective mechanism includes a protective plate, a first screw hole and a first screw. A protective plate is provided on one side of the tooling plate. A plurality of groups of first screw holes are provided on the surface of the protective plate. The inner wall of the first screw hole is threadedly connected with a first screw.

[0010] By adopting the above technical solution, the protective plate is placed on one side of the tooling plate, and the first screw is screwed. The first screw passes through the first screw hole and is threadedly connected to the tooling plate, thereby fixing the tooling plate on the protective plate.

[0011] Preferably, one end of the first screw cooperates with the tooling plate, and the protective plate is made of acrylic plate.

[0012] By adopting the above technical solution and adding an isolation acrylic plate, the risk of pressure on the operator's hands can be avoided.

[0013] Preferably, the mounting mechanism includes a connecting groove, a connecting block, a second screw hole, a second screw, a slide groove, a clamping block, a spring groove, a spring, a pin, a connecting rod, a clamping groove, a pin groove and a probe, the surface of the tooling plate is provided with multiple groups of connecting grooves, the inner wall of the connecting groove is slidably connected to the connecting block, the surface of the tooling plate is provided with multiple groups of second screw holes, the inner wall of the second screw hole is threadedly connected to the second screw, one end of the second screw cooperates with the connecting block, the surface of the connecting block is provided with two groups of slide grooves, and one end of the slide groove is provided with a clamping block.

[0014] By adopting the above technical solution, when the probe needs to be installed, the connecting block is inserted into the connecting groove, and the second screw is turned. The second screw passes through the second screw hole and is threadedly connected to the connecting block, so that the connecting block can be fixed on the tooling plate.

[0015] Preferably, a spring groove is provided on one side of the inner wall of the two groups of the slide grooves, and a spring is provided on the inner wall of the spring groove. One end of the spring is fixedly connected to the spring groove, and the other end is fixedly connected to a bayonet. The inner wall of the slide groove is slidably connected to a connecting rod, and a bayonet groove is provided at one end of the connecting rod. The blocking block cooperates with the bayonet groove, and a bayonet pin groove is provided on the surface of the connecting rod. The bayonet pin cooperates with the bayonet pin groove, and a probe is provided at one end of the connecting rod.

[0016] By adopting the above technical solution, after the connecting block is fixed on the tooling plate, the probe is inserted into the slide groove through the connecting rod, the connecting rod squeezes the spring and the pin, and then the connecting rod is rotated to insert the block into the slot. When the connecting rod is rotated to the appropriate position, the spring resets and pushes the pin into the pin slot, so that the connecting rod can be stuck on the connecting block.

[0017] Preferably, the spring groove is provided with a cylindrical accommodating cavity matched with the outer circumferential surface of the spring, and a radial fitting gap is formed between the inner wall of the accommodating cavity and the outer wall of the spring, and the size range of the radial fitting gap is 0.08 to 0.25 mm.

[0018] By adopting the above technical solution, when the spring is extended and retracted, the spring groove will limit the spring to prevent the spring from shaking.

[0019] Preferably, the fixing mechanism includes a fixing groove, a driving motor, a threaded rod, a sliding rod and a clamping block, and two groups of fixing grooves are opened on the inner walls of the multiple groups of grooves. A driving motor is provided inside one end of the fixing groove, and one end of the driving motor is fixedly connected to a threaded rod, and one end of the threaded rod is rotatably connected to a contactor testing machine, and a sliding rod is fixedly connected between the two groups of fixing grooves.

[0020] Preferably, the surface of the threaded rod is threadedly connected with two groups of clamping blocks, and one end of the two groups of clamping blocks slides on the surface of the sliding rod.

[0021] By adopting the above technical solution, the contactor is placed in the groove, and the drive motor is started to drive the threaded rod to rotate, so that the two sets of clamps move inward at the same time. The contactor is clamped by the two sets of clamps so that the contactor can be fixed on the contactor testing machine.

[0022] Preferably, the inner wall size of the fixing groove matches the outer wall size of the clamping block, and the surface of the clamping block is provided with multiple groups of protrusions.

[0023] By adopting the above technical solution, the clamping block can be accommodated in the fixing groove so that the contactor can be placed in the groove. The protrusion can increase the friction force on one side of the clamping block, making the two sets of clamping blocks clamp the contactor more stably.

[0024] Preferably, the bottom of the contactor testing machine is fixedly connected to multiple groups of support blocks, the surface of the tooling plate is provided with multiple groups of oil pressure buffers, the top of the contactor testing machine is provided with two groups of bushings, the inner walls of the two groups of bushings are slidably connected to guide rods, and one end of the guide rods is fixedly connected to the tooling plate.

[0025] By adopting the above technical solution, the use of oil pressure buffers can reduce the impact of vibration during testing, and the guide rods can play a supporting and guiding role, so that the tooling plate will not slide when moving up and down.

[0026] The technical effects and advantages of this application are:

[0027] Compared with the prior art, this device for testing the mechanical life of a contactor inserts the connecting block into the connecting groove through the installation mechanism and the oil pressure buffer, and screws the second screw. The second screw passes through the second screw hole and is threadedly connected to the connecting block, so that the connecting block can be fixed on the tooling plate, and then the probe is inserted into the slide groove through the connecting rod. The connecting rod squeezes the spring and the bayonet, and then the connecting rod is rotated to insert the card block into the card groove. When the connecting rod is rotated to the appropriate position, the spring resets and pushes the bayonet to be inserted into the bayonet groove, so that the connecting rod can be stuck on the connecting block, thereby completing the installation of the probe. When the contactor is tested, the cylinder is started to control the tooling plate to move downward. Move so that one end of the probe contacts the contactor, and the position arrangement of the probe is related to whether the various installation points of the contactor of the object to be tested are qualified. According to the multiple sets of grooves set, multiple stations can be tested simultaneously. During the detection drop process, one end of the probe contacts the contactor, and the sensor or inductor on the probe is used. When it detects that the object to be tested is unqualified, an alarm will be issued, and the use of double probes reduces the probability of false detection. The use of oil pressure buffers reduces the impact of vibration during the test. At the same time, the use of probes for detection eliminates the need for wiring harness connection, thereby reducing changeover time. Secondly, the two toolings are independent and easier to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall structure of this application;

[0029] Figure 2 This is a schematic diagram of the structure of the contactor test machine and the cylinder in this application;

[0030] Figure 3 This is a schematic diagram of the matching structure of the bushing and the guide rod in this application;

[0031] Figure 4 A schematic diagram of the structure of the protection mechanism of this application;

[0032] Figure 5 This is a schematic diagram of the structure of the installation mechanism of this application;

[0033] Figure 6 This is a schematic diagram of the structure of the connecting rod and the probe in this application;

[0034] Figure 7 This is a schematic diagram of the structure of the connecting rod and the card slot in this application;

[0035] Figure 8 This is a schematic diagram of the structure of the groove and the contactor matching in this application;

[0036] Figure 9 This is a schematic structural diagram of the fixing mechanism of this application;

[0037] Figure 10 This is a schematic diagram of the structure of the contactor tester and the contactor in this application;

[0038] Figure 11 For this application Figure 7 A is an enlarged schematic diagram.

[0039] The accompanying drawings are marked as follows: 1. Contactor tester; 2. Support block; 3. Cylinder; 4. Tooling plate; 5. Protective mechanism; 501. Protective plate; 502. First screw hole; 503. First screw; 6. Mounting mechanism; 601. Connecting groove; 602. Connecting block; 603. Second screw hole; 604. Second screw; 605. Slide; 606. Block; 607. Spring groove; 608. Spring; 609. Pin; 610. Connecting rod; 611. Slot; 612. Pin slot; 613. Probe; 7. Hydraulic buffer; 8. Groove; 9. Fixing mechanism; 901. Fixing groove; 902. Drive motor; 903. Threaded rod; 904. Slide; 905. Clamp; 10. Contactor; 11. Bushing; 12. Guide rod. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0041] Example: like Figures 1 to 11 The device shown is a contactor mechanical life tester, comprising a contactor tester 1 and a contactor 10. A cylinder 3 is fixedly connected to the surface of the contactor tester 1, and one end of the cylinder 3 is fixedly connected to a tooling plate 4. Starting the cylinder 3 can control the tooling plate 4 to move up and down. A plurality of groups of grooves 8 are provided inside the contactor tester 1, and the inner wall of the groove 8 is slidably connected to the contactor 10, so that the contactor 10 can be placed in the groove 8 for subsequent testing. A protective mechanism 5 is provided on one side of the tooling plate 4 to prevent the operator's hands from being under pressure. The tooling plate 4 can be isolated to prevent the operator's hands from being under pressure. The surface of the tooling plate 4 is provided with an installation mechanism 6 for installing or replacing a test probe, which facilitates the replacement of the probe 613 and uses a double probe 613 to reduce the probability of misdetection. The surface of the groove 8 is provided with a fixing mechanism 9 for fixing contactors 10 of different sizes.

[0042] As a preferred embodiment, the protective mechanism 5 includes a protective plate 501, a first screw hole 502 and a first screw 503. A protective plate 501 is provided on one side of the tooling plate 4. Multiple groups of first screw holes 502 are provided on the surface of the protective plate 501. The inner wall of the first screw hole 502 is threadedly connected with the first screw 503. The protective plate 501 is placed on one side of the tooling plate 4, and the first screw 503 is screwed. The first screw 503 passes through the first screw hole 502 and is threadedly connected to the tooling plate 4, thereby fixing the tooling plate 4 on the protective plate 501.

[0043] As a preferred embodiment, one end of the first screw 503 cooperates with the tooling plate 4, and the protective plate 501 is made of acrylic plate. Adding an isolation acrylic plate can avoid the risk of pressure on the operator's hands.

[0044] As a preferred embodiment, the mounting mechanism 6 includes a connecting groove 601, a connecting block 602, a second screw hole 603, a second screw 604, a slide groove 605, a clamping block 606, a spring groove 607, a spring 608, a bayonet 609, a connecting rod 610, a clamping groove 611, a bayonet groove 612 and a probe 613. The surface of the tooling plate 4 is provided with multiple groups of connecting grooves 601, the inner wall of the connecting groove 601 is slidably connected to the connecting block 602, the surface of the tooling plate 4 is provided with multiple groups of second screw holes 603, the second The inner wall of the screw hole 603 is threadedly connected to a second screw 604, one end of the second screw 604 cooperates with the connecting block 602, and two sets of slide grooves 605 are provided on the surface of the connecting block 602, and a clamping block 606 is provided at one end of the slide groove 605. When the probe 613 needs to be installed, the connecting block 602 is inserted into the connecting groove 601, and the second screw 604 is turned. The second screw 604 passes through the second screw hole 603 and is threadedly connected to the connecting block 602, so that the connecting block 602 can be fixed on the tooling plate 4.

[0045] As a preferred embodiment, a spring groove 607 is provided on one side of the inner wall of the two sets of slide grooves 605, a spring 608 is provided on the inner wall of the spring groove 607, one end of the spring 608 is fixedly connected to the spring groove 607, and the other end is fixedly connected to the bayonet 609, the inner wall of the slide groove 605 is slidably connected to a connecting rod 610, one end of the connecting rod 610 is provided with a bayonet groove 611, the block 606 cooperates with the bayonet groove 611, and the surface of the connecting rod 610 is provided with a bayonet groove 612, the bayonet 609 is fixedly connected to the bayonet groove 61 2, a probe 613 is provided at one end of the connecting rod 610. When the connecting block 602 is fixed to the tooling plate 4, the probe 613 is inserted into the slide groove 605 through the connecting rod 610. The connecting rod 610 squeezes the spring 608 and the latch 609, and then the connecting rod 610 is rotated to insert the block 606 into the latch groove 611. When the connecting rod 610 is rotated to the appropriate position, the spring 608 returns to its original position and pushes the latch 609 to be inserted into the latch groove 612, so that the connecting rod 610 can be clamped on the connecting block 602.

[0046] As a preferred embodiment, the spring groove 607 is provided with a cylindrical accommodating cavity that matches the outer circumferential surface of the spring 608. A radial fitting gap is formed between the inner wall of the accommodating cavity and the outer wall of the spring 608. The size range of the radial fitting gap is 0.08~0.25mm. When the spring 608 is extended and retracted, the spring groove 607 will limit the spring 608 to prevent the spring 608 from shaking.

[0047] As a preferred embodiment, the fixing mechanism 9 includes a fixing groove 901, a drive motor 902, a threaded rod 903, a slide rod 904 and a clamp 905. Two groups of fixing grooves 901 are opened on the inner wall of the multiple groups of grooves 8. A drive motor 902 is provided inside one end of the fixing groove 901. One end of the drive motor 902 is fixedly connected to the threaded rod 903. One end of the threaded rod 903 is rotatably connected to the contactor tester 1. A slide rod 904 is fixedly connected between the two groups of fixing grooves 901. Starting the drive motor 902 can drive the threaded rod 903 to rotate.

[0048] As a preferred embodiment, two sets of clamps 905 are threadedly connected to the surface of the threaded rod 903, and one end of the two sets of clamps 905 slides on the surface of the slide rod 904 to place the contactor 10 in the groove 8. The drive motor 902 is started to drive the threaded rod 903 to rotate, so that the two sets of clamps 905 move inward at the same time. The contactor 10 is clamped by the two sets of clamps 905 so that the contactor 10 can be fixed on the contactor testing machine 1.

[0049] As a preferred embodiment, the inner wall size of the fixing groove 901 matches the outer wall size of the clamping block 905, so that the clamping block 905 can be received in the fixing groove 901 so as to place the contactor 10 in the groove 8. The surface of the clamping block 905 is provided with multiple groups of protrusions, which can increase the friction force on one side of the clamping block 905, so that the two groups of clamping blocks 905 can clamp the contactor 10 more stably.

[0050] As a preferred embodiment, the bottom of the contactor testing machine 1 is fixedly connected with multiple groups of support blocks 2 for supporting the contactor testing machine 1. The surface of the tooling plate 4 is provided with multiple groups of oil pressure buffers 7. The use of oil pressure buffers 7 can reduce the impact of vibration during testing. The top of the contactor testing machine 1 is provided with two groups of bushings 11. The inner walls of the two groups of bushings 11 are slidably connected with guide rods 12. One end of the guide rod 12 is fixedly connected to the tooling plate 4, which can play a supporting and guiding role, so that the tooling plate 4 will not slide when moving up and down.

[0051] The working process of the present application is as follows: insert the connecting block 602 into the connecting groove 601, screw the second screw 604, the second screw 604 passes through the second screw hole 603 and is threadedly connected to the connecting block 602, so that the connecting block 602 can be fixed on the tooling plate 4, and then insert the probe 613 into the slide groove 605 through the connecting rod 610, the connecting rod 610 squeezes the spring 608 and the latch 609, and then rotates the connecting rod 610 to insert the clamping block 606 into the clamping groove 611. After the connecting rod 610 is rotated to the appropriate position, the spring 608 is reset to push the latch 609 into the latch slot 612, so that the connecting rod 610 can be stuck on the connecting block 602, thereby completing the installation of the probe 613. Then, the protective plate 501 is placed on one side of the tooling plate 4, and the first screw 503 is screwed. The first screw 503 passes through the first screw hole 502 and is threadedly connected to the tooling plate 4, thereby fixing the tooling plate 4 on the protective plate 501. Then, the contactor 10 to be tested is placed on the protective plate 501. Place it in the groove 8, start the drive motor 902 to drive the threaded rod 903 to rotate, so that the two sets of clamps 905 move inward at the same time, and the contactor 10 is clamped by the two sets of clamps 905, so that the contactor 10 is fixed on the contactor testing machine 1. When the contactor 10 is tested, the cylinder 3 is started to control the tooling plate 4 to move downward, so that one end of the probe 613 contacts the contactor 10, and the position arrangement of the probe 613 is related to whether the various installation points of the contactor 10 of the object to be tested are qualified. According to the multiple sets of grooves 8 set up, multiple stations can be tested simultaneously. During the detection and falling process, one end of the probe 613 contacts the contactor 10, and the sensor or inductor on the probe 613 is used. When it is detected that the object to be tested is unqualified, an alarm will be issued, and the use of double probes 613 reduces the probability of false detection, and the use of oil pressure buffer 7 reduces the impact of vibration during testing. The above is the working principle of this equipment for testing the mechanical life of a contactor.

Claims

1. A device for testing the mechanical life of a contactor, comprising a contactor tester (1) and a contactor (10), wherein a cylinder (3) is fixedly connected to the surface of the contactor tester (1), one end of the cylinder (3) is fixedly connected to a tooling plate (4), a plurality of groups of grooves (8) are provided inside the contactor tester (1), and the inner wall of the groove (8) is slidably connected to the contactor (10), characterized in that: A protective mechanism (5) is provided on one side of the tooling plate (4) to prevent the operator's hands from being subjected to pressure, a mounting mechanism (6) for mounting or replacing a test probe is provided on the surface of the tooling plate (4), and a fixing mechanism (9) for fixing contactors (10) of different sizes is provided on the surface of the groove (8); The fixing mechanism (9) comprises a fixing groove (901), a driving motor (902), a threaded rod (903), a sliding rod (904) and a clamping block (905). Two groups of fixing grooves (901) are provided on the inner wall of the plurality of groups of grooves (8). A driving motor (902) is provided inside one end of the fixing groove (901). One end of the driving motor (902) is fixedly connected to a threaded rod (903). One end of the threaded rod (903) is rotatably connected to a contactor tester (1). A sliding rod (904) is fixedly connected between the two groups of fixing grooves (901).

2. The device for testing the mechanical life of a contactor according to claim 1, characterized in that: The protective mechanism (5) comprises a protective plate (501), a first screw hole (502) and a first screw (503); a protective plate (501) is provided on one side of the tooling plate (4); a plurality of first screw holes (502) are provided on the surface of the protective plate (501); the inner walls of the first screw holes (502) are threadedly connected with first screws (503); one end of the first screw (503) is matched with the tooling plate (4).

3. The device for testing the mechanical life of a contactor according to claim 2, characterized in that: One end of the first screw (503) is matched with the tooling plate (4), and the protective plate (501) is made of acrylic plate.

4. The device for testing the mechanical life of a contactor according to claim 1, characterized in that: The mounting mechanism (6) comprises a connecting groove (601), a connecting block (602), a second screw hole (603), a second screw (604), a sliding groove (605), a clamping block (606), a spring groove (607), a spring (608), a latch (609), a connecting rod (610), a clamping groove (611), a latching groove (612) and a probe (613). The surface of the tooling plate (4) is provided with a plurality of connecting grooves (601), the inner wall of the connecting groove (601) is slidably connected to the connecting block (602), the surface of the tooling plate (4) is provided with a plurality of second screw holes (603), the inner wall of the second screw hole (603) is threadedly connected to the second screw (604), one end of the second screw (604) is matched with the connecting block (602), the surface of the connecting block (602) is provided with two groups of sliding grooves (605), and one end of the sliding groove (605) is provided with a clamping block (606).

5. The device for testing the mechanical life of a contactor according to claim 4, characterized in that: A spring groove (607) is provided on one side of the inner wall of the two groups of the slide grooves (605), and a spring (608) is provided on the inner wall of the spring groove (607). One end of the spring (608) is fixedly connected to the spring groove (607), and the other end is fixedly connected to the latch (609). The inner wall of the slide groove (605) is slidably connected to a connecting rod (610), and a latch groove (611) is provided on one end of the connecting rod (610). The block (606) cooperates with the latch groove (611). A latch groove (612) is provided on the surface of the connecting rod (610), and the latch pin (609) cooperates with the latch groove (612). A probe (613) is provided on one end of the connecting rod (610).

6. The device for testing the mechanical life of a contactor according to claim 5, characterized in that: The spring groove (607) is provided with a cylindrical accommodating cavity that matches the outer circumferential surface of the spring (608), and a radial fitting gap is formed between the inner wall of the accommodating cavity and the outer wall of the spring (608), and the size range of the radial fitting gap is 0.08 to 0.25 mm.

7. The device for testing the mechanical life of a contactor according to claim 1, characterized in that: The surface of the threaded rod (903) is threadedly connected with two groups of clamping blocks (905), and one end of the two groups of clamping blocks (905) slides on the surface of the sliding rod (904).

8. The device for testing the mechanical life of a contactor according to claim 7, characterized in that: The inner wall size of the fixing groove (901) matches the outer wall size of the clamping block (905), and the surface of the clamping block (905) is provided with multiple groups of protrusions.

9. The device for testing the mechanical life of a contactor according to claim 1, characterized in that: The bottom of the contactor tester (1) is fixedly connected to a plurality of support blocks (2), the surface of the tooling plate (4) is provided with a plurality of oil pressure buffers (7), and the top of the contactor tester (1) is provided with two groups of bushings (11), the inner walls of the two groups of bushings (11) are slidably connected to guide rods (12), and one end of the guide rods (12) is fixedly connected to the tooling plate (4).

Images