A safety relay testing device

Abstract

This utility model discloses a safety relay testing device, including a workbench. A relay testing body is fixedly connected to the top of the workbench, and a clamping assembly is provided on the relay testing body. A U-shaped plate is fixedly connected to the top of the workbench, and two third hydraulic rods are fixedly connected to the inner wall of the U-shaped plate. A movable plate is fixedly connected to the opposite ends of the two third hydraulic rods, and a buffer mechanism is provided on each mounting plate. This utility model uses multiple hydraulic rods to move the clamping plate, thereby fixing the relay and ensuring that the relay is in the same position during each test, ensuring accurate alignment of the subsequent probe with the testing hole. The buffer mechanism allows the spring compression to buffer the impact force when the testing probe aligns with the relay, avoiding damage caused by rigid contact, while ensuring sufficient contact between the testing probe and the testing part, effectively reducing the deviation of the testing data.

Description

Technical Field

[0001] This utility model relates to the field of relay testing technology, and in particular to a safety relay testing device. Background Technology

[0002] In the field of modern industrial automation, safety relays are key components for ensuring the safe operation of electrical systems, and their performance testing is of paramount importance.

[0003] Regarding the fixing of the safety relay for testing, existing devices lack a stable and precise clamping structure, making it difficult to ensure that the relay is in the same position for each test. This results in poor repeatability and consistency of test results, affecting the accuracy of the test. In the connection between the test probe and the relay, the rigid contact between the test probe and the relay's testing part can easily generate a large impact force, which can not only damage the test probe and the relay, but may also lead to deviations in the test data due to insufficient contact. To solve the above problems, this application proposes a safety relay testing device. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a safety relay testing device. This device uses multiple hydraulic rods to move a clamping plate, thereby fixing the relay and ensuring that the relay is in the same position during each test, thus ensuring the accuracy of subsequent probe docking with the test hole. The buffer mechanism allows the spring compression to buffer the impact force when the test probe docks with the relay, avoiding damage caused by rigid contact, while ensuring sufficient contact between the test probe and the test part, effectively reducing test data deviation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A safety relay testing device includes a workbench, a relay testing body fixedly connected to the top of the workbench, a clamping assembly on the relay testing body, a U-shaped plate fixedly connected to the top of the workbench, two third hydraulic rods fixedly connected to the inner wall of the U-shaped plate, a movable plate fixedly connected to the opposite ends of the two third hydraulic rods, two mounting plates provided between the two movable plates, each mounting plate having a buffer mechanism, probe holders fixedly connected to the opposite ends of the two mounting plates, and multiple testing probes mounted on the opposite ends of the two probe holders, a battery fixedly connected to the top of the workbench, a switch fixedly connected to the inner top of the U-shaped plate, and a voltmeter and an ammeter fixedly connected to the top of the U-shaped plate.

[0007] Preferably, the clamping assembly includes two first hydraulic rods fixedly connected to the inner wall of the U-shaped plate, and a first clamping plate fixedly connected to the opposite ends of the two first hydraulic rods. Two fixing plates are fixedly connected to the top of the workbench, and a second hydraulic rod is fixedly connected to the opposite ends of the two fixing plates. A second clamping plate is fixedly connected to the ends of the two second hydraulic rods.

[0008] Preferably, the buffer mechanism includes two T-shaped slide rods that pass through and are slidably connected to the movable plate. Both T-shaped slide rods are fixedly connected to the side wall of the mounting plate. Each T-shaped slide rod has a spring sleeved on its outer wall. The two ends of each spring are fixedly connected to the movable plate and the mounting plate, respectively.

[0009] Preferably, the relay detection body has multiple detection holes, and the multiple detection probes are respectively matched with their corresponding detection holes.

[0010] Preferably, each of the two first clamping plates has a first protective layer at its opposite ends, and each of the two second clamping plates has a second protective layer at its opposite ends, wherein the first and second protective layers are made of rubber.

[0011] Preferably, the battery is connected to a first cable, which is connected to a switch. The switch is connected to a second cable, which is connected to a probe holder on the right side. The detection probe on the left side is connected to a third cable, which passes through and is fixedly connected to the U-shaped plate. The third cable is connected to a voltmeter, which is connected to an ammeter, and the ammeter is connected to the battery.

[0012] Compared with the prior art, the advantages of this utility model are as follows:

[0013] 1. The use of multiple hydraulically driven clamping plates enables precise and stable multi-directional clamping of the relay, ensuring that the relay is in the same position during each test, which greatly improves the repeatability and consistency of the test results and ensures the accuracy of the test.

[0014] 2. In the connection between the detection probe and the relay, a buffer mechanism with springs and slide bars is introduced. When the detection probe docks with the detection part of the relay, the impact force can be buffered by spring compression to avoid damage caused by rigid contact. At the same time, it ensures sufficient contact between the detection probe and the detection part, effectively reducing the deviation of the detection data.

[0015] 3. Equipped with a reliable switch to achieve precise control of circuit on / off, and accurately measures voltage and current parameters through voltmeters and ammeters, it can quickly and accurately determine the electromagnetic characteristics of the relay coil, accurately identify whether the relay has faults such as short circuits or open circuits, and significantly improve detection efficiency and reliability.

[0016] In summary, this device uses multiple hydraulic rods to move the clamping plate, thereby fixing the relay and ensuring that the relay is in the same position during each test, thus ensuring the accuracy of subsequent probe docking with the test hole. The buffer mechanism allows the spring compression to buffer the impact force when the test probe docks with the relay, avoiding damage caused by rigid contact, while ensuring sufficient contact between the test probe and the test part, effectively reducing the deviation of the test data. Attached Figure Description

[0017] Figure 1 This is a first structural schematic diagram of a safety relay detection device proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the second structure of a safety relay detection device proposed in this utility model.

[0019] In the diagram: 1. Workbench, 2. Relay detection body, 3. Detection hole, 4. U-shaped plate, 5. First hydraulic rod, 6. First clamping plate, 7. Fixing plate, 8. Second hydraulic rod, 9. Second clamping plate, 10. Third hydraulic rod, 11. Moving plate, 12. Mounting plate, 13. T-shaped slide bar, 14. Spring, 15. Probe holder, 16. Detection probe, 17. Battery, 18. Switch, 19. Voltmeter, 20. Ammeter. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figures 1-2 A safety relay testing device includes a workbench 1, on the top of which a relay testing body 2 is fixedly connected. The relay testing body 2 is the object to be tested, and the testing hole 3 on it is used to cooperate with the testing probe 16 to realize the testing function.

[0022] The relay detection body 2 is equipped with a clamping assembly, which includes two first hydraulic rods 5 fixedly connected to the inner wall of the U-shaped plate 4. Each of the two first hydraulic rods 5 has a first clamping plate 6 fixedly connected to its opposite end. The first clamping plate 6 clamps and fixes the relay detection body 2 in the lateral direction, serving a positioning and clamping function. Two fixing plates 7 are fixedly connected to the top of the workbench 1. Each of the two fixing plates 7 has a second hydraulic rod 8 fixedly connected to its opposite end. Each of the two second hydraulic rods 8 has a second clamping plate 9 fixedly connected to its end. The second hydraulic rods 8 extend and retract, driving the second clamping plate 9 to clamp and fix the relay detection body 2 in the longitudinal direction. The second hydraulic rods 8 cooperate with the first hydraulic rods 5 to securely install the relay detection body 2 in the designated position, ensuring that the relay detection body 2 is in the same position during each test, facilitating accurate testing. Each of the two first clamping plates 6 has a first protective layer, and each of the two second clamping plates 9 has a second protective layer. The first and second protective layers are made of rubber, serving to protect the surface of the relay detection body 2.

[0023] A U-shaped plate 4 is fixedly connected to the top of the workbench 1. Two third hydraulic rods 10 are fixedly connected to the inner wall of the U-shaped plate 4. Movable plates 11 are fixedly connected to the opposite ends of the two third hydraulic rods 10. Two mounting plates 12 are provided between the two movable plates 11. The mounting plates 12 are used to fix the probe seat 15 and the detection probe 16. Each mounting plate 12 is provided with a buffer mechanism. The buffer mechanism includes two T-shaped slide rods 13 that pass through the movable plate 11 and are slidably connected to it. Both T-shaped slide rods 13 are fixedly connected to the side wall of the mounting plate 12. A spring 14 is sleeved on the outer wall of each T-shaped slide rod 13. The two ends of each spring 14 are fixedly connected to the movable plate 11 and the mounting plate 12 respectively. When the detection probe 16 docks with the detection hole 3, the compression and rebound of the spring 14 ensure that the detection probe 16 is in full contact with the inner wall of the detection hole 3.

[0024] Both mounting plates 12 are fixedly connected to probe holders 15 at their opposite ends. Both probe holders 15 are equipped with multiple detection probes 16 at their opposite ends. The relay detection body 2 has multiple detection holes 3. The multiple detection probes 16 cooperate with their corresponding detection holes 3. The detection probes 16 cooperate with the detection holes 3 on the relay detection body 2 to realize the electrical connection and detection function of the relay detection body 2.

[0025] A battery 17 is fixedly connected to the top of the workbench 1. A switch 18 is fixedly connected to the inner top of the U-shaped plate 4. The switch 18 is used to control the on / off state of the detection circuit. A voltmeter 19 and an ammeter 20 are fixedly connected to the top of the U-shaped plate 4, which are used to measure the voltage and current parameters in the detection circuit, respectively. The battery 17 is connected to a first cable, which is connected to the switch 18. The switch 18 is connected to a second cable, which is connected to the probe holder 15 on the right side. The detection probe 16 on the left side is connected to a third cable, which passes through the U-shaped plate 4 and is fixedly connected to it. The third cable is connected to the voltmeter 19, which is connected to the ammeter 20. The ammeter 20 is connected to the battery 17. The voltmeter 19, the ammeter 20, and the battery 17 are connected by cables. By analyzing the voltage and current data, the electromagnetic characteristics of the coil inside the relay detection body 2 are determined, as well as whether there is a short circuit / open circuit.

[0026] In this invention, when the relay detection body 2 needs to be tested, it is placed between two pairs of first clamping plates 6 and second clamping plates 9. The first hydraulic rods 5 and 8 are activated, causing the first clamping plates 6 on both sides to move relative to each other until they abut against the outer wall of the relay detection body 2. Similarly, the two second hydraulic rods 8 cause the second clamping plates 9 on both sides to move relative to each other until they abut against the outer wall of the relay detection body 2, thus completing the installation and fixing of the relay detection body 2. This allows relay detection bodies 2 of the same specification to be fixed in the same position each time, facilitating subsequent testing. The two third hydraulic rods 10 are then activated, causing the moving plates 11, mounting plates 12, probe holders 15, and multiple detection probes 16 on both sides to move relative to each other. The process continues until the detection probe 16 is inserted into the corresponding detection hole 3 to complete the docking. During this process, when the detection probe 16 contacts the inner wall of the detection hole 3, the T-shaped slide bar 13 slides on the moving plate 11 and the spring 14 is compressed. The compressed spring 14 ensures that the detection probe 16 makes sufficient contact with the inner wall of the detection hole 3. The switch 18 is then closed to energize the circuit. A circuit is formed by the battery 17, switch 18, right-side probe holder 15, detection probe 16, relay detection body 2, left-side detection probe 16, probe holder 15, voltmeter 19, ammeter 20, and battery 17. The electromagnetic characteristics of the coil inside the relay detection body 2 are measured and judged using the parameters of voltmeter 19 and ammeter 20. The voltage and current are used to determine whether the coil inside the relay detection body 2 is properly engaged and whether there is a short circuit / open circuit in the relay detection body 2.

Claims

1. A safety relay testing device, comprising a workbench (1), characterized in that, A relay detection body (2) is fixedly connected to the top of the workbench (1). The relay detection body (2) is provided with a clamping assembly. A U-shaped plate (4) is fixedly connected to the top of the workbench (1). Two third hydraulic rods (10) are fixedly connected to the inner wall of the U-shaped plate (4). A moving plate (11) is fixedly connected to the opposite ends of the two third hydraulic rods (10). Two mounting plates (12) are provided between the two moving plates (11). Each mounting plate (12) is provided with a buffer mechanism. A probe seat (15) is fixedly connected to the opposite ends of the two mounting plates (12). Multiple detection probes (16) are installed on the opposite ends of the two probe seats (15). A battery (17) is fixedly connected to the top of the workbench (1). A switch (18) is fixedly connected to the inner top of the U-shaped plate (4). A voltmeter (19) and an ammeter (20) are fixedly connected to the top of the U-shaped plate (4).

2. The safety relay detection device according to claim 1, characterized in that, The clamping assembly includes two first hydraulic rods (5) fixedly connected to the inner wall of the U-shaped plate (4), and a first clamping plate (6) fixedly connected to the opposite ends of the two first hydraulic rods (5). Two fixing plates (7) are fixedly connected to the top of the workbench (1), and a second hydraulic rod (8) is fixedly connected to the opposite ends of the two fixing plates (7). A second clamping plate (9) is fixedly connected to the ends of the two second hydraulic rods (8).

3. The safety relay detection device according to claim 1, characterized in that, The buffer mechanism includes two T-shaped slide rods (13) that pass through and are slidably connected to the movable plate (11). Both T-shaped slide rods (13) are fixedly connected to the side wall of the mounting plate (12). Each T-shaped slide rod (13) is fitted with a spring (14) on its outer wall. Both ends of each spring (14) are fixedly connected to the movable plate (11) and the mounting plate (12) respectively.

4. The safety relay detection device according to claim 1, characterized in that, The relay detection body (2) has multiple detection holes (3), and multiple detection probes (16) are respectively matched with their corresponding detection holes (3).

5. A safety relay detection device according to claim 2, characterized in that, The two first clamping plates (6) are provided with a first protective layer at their opposite ends, and the two second clamping plates (9) are provided with a second protective layer at their opposite ends. The first and second protective layers are made of rubber.

6. A safety relay detection device according to claim 1, characterized in that, The battery (17) is connected to a first cable, which is connected to a switch (18). The switch (18) is connected to a second cable, which is connected to a probe holder (15) on the right side. The detection probe (16) on the left side is connected to a third cable, which passes through the U-shaped plate (4) and is fixedly connected to it. The third cable is connected to a voltmeter (19), which is connected to an ammeter (20). The ammeter (20) is connected to the battery (17).

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