A test device and test method for relay dynamic spring performance

Abstract

A testing device and a testing method for the performance of a dynamic spring of a relay, wherein the testing device for the performance of a dynamic spring of a relay comprises a detection device and a clamping device. The detection device comprises a lifting seat, a lifting platform, a sliding table, a displacement sensor, and a dynamometer. The working end face of the lifting platform is vertically arranged with the lifting seat, and follows the lifting seat to rise or fall, and adjust the height of the dynamometer. The detection device can be used to measure the thrust and distance between the dynamic spring piece and the static spring piece when they are closed, and can also measure the tension and distance between the dynamic spring piece and the static spring piece when they are disconnected, so that the testing device can be used for multiple purposes. At the same time, after completing the measurement of the thrust and distance, the measurement of the tension and distance can be performed, saving time. The present invention also discloses a testing method for the performance of a dynamic spring of a relay.

Description

Technical Field

[0001] The invention relates to the technical field of relay detection, in particular to a device and method for testing the performance of a dynamic spring of a relay. Background Art

[0002] The magnetic latching relay is an electrical component that uses the electromagnetic principle to control the on and off of the circuit. Its core feature is the magnetic latching function, that is, under the action of the initial current, the contacts of the relay can be attracted, and after the current disappears, the contacts can still maintain the original on and off state, and there is no need for continuous power supply to maintain the contact's attracted state. Therefore, the magnetic latching relay is widely used in circuits.

[0003] The working principle of the magnetic latching relay is mainly based on the attraction and release of the electromagnet. When the electromagnetic coil is energized, the magnetic field generated causes the iron core to be magnetized, thereby attracting the contact arm, causing the moving contact to be attracted to the static contact, and closing the circuit. When the coil is de-energized, the magnetic latching relay usually contains a permanent magnet or hysteresis material, which can keep the contacts in the attracted state until the coil is energized again or an external mechanical force is applied to disconnect it.

[0004] After production, existing magnetic latching relays are often only tested for their power-on performance, while ignoring the elasticity of the moving reed inside the magnetic latching relay and the magnitude of the magnetic force generated by the electromagnetic coil. As a result, although the electrical performance of the defective magnetic latching relay is normal during testing, it may still not be able to fully close or open after being installed in the circuit due to the existence of the Lorentz force. Summary of the invention

[0005] In view of this, the present invention provides a testing device and a testing method for the performance of a dynamic spring of a relay to solve the above technical problems.

[0006] A test device for the performance of a dynamic spring of a relay, wherein the relay comprises a group of dynamic springs and static springs. The test device for the performance of the dynamic spring of the relay comprises a detection device and a clamping device arranged on one side of the detection device. The detection device comprises a lifting assembly, a sliding assembly arranged on the lifting assembly, a displacement monitoring unit arranged on the sliding assembly, and a dynamometer arranged on the sliding assembly and interacting with the displacement monitoring unit. The lifting assembly is used to drive the sliding assembly to reciprocate in a vertical direction. The sliding assembly comprises a lower slide fixedly arranged on the lifting assembly, an upper slide slidably arranged on the lower slide, and at least one elastic member arranged between the lower slide and the upper slide. The displacement monitoring unit comprises a bracket arranged at one end of the lower slide, and a micrometer arranged on the bracket. The dynamometer is arranged on the upper slide and moves with the upper slide, and has an output rod and a shifting rod arranged on the output rod. The clamping device is used to clamp and fix the relay, the lever abuts against the side of the moving spring sheet facing away from the static spring sheet and the micrometer is rotated to abut against the upper slide until the moving spring sheet and the static spring sheet are merged, at this time, the distance traveled by the micrometer and the value measured by the dynamometer are recorded, and at the same time, the elastic member is stretched, the position of the lever is adjusted so that the lever is inserted between the moving spring sheet and the static spring sheet and the relay is powered on so that the moving spring sheet and the static spring sheet are merged, the micrometer is rotated in the opposite direction to allow the restoring force of the elastic member to pull the upper slide table to slide in a direction away from the relay until the moving spring sheet and the static spring sheet are separated, at this time, the distance traveled by the micrometer and the value measured by the dynamometer are recorded to complete the test of the dynamic spring performance of the relay.

[0007] Furthermore, the lifting assembly includes a base, a vertically arranged screw rod, and a carrier slidably arranged on the screw rod.

[0008] Furthermore, the base is a groove-shaped structure, and the screw rod is vertically arranged in the groove-shaped structure.

[0009] Furthermore, the carrier is screwed onto the screw rod.

[0010] Furthermore, the lower slide platform is provided with two slide rails arranged at intervals, and at least one lower support bar arranged between the two slide rails.

[0011] Furthermore, three guide bars arranged at intervals are arranged on a side of the upper slide toward the lower slide, and two upper abutment bars are arranged respectively between two adjacent guide bars.

[0012] Furthermore, the detection end of the micrometer is connected to the end surface of the upper slide.

[0013] Furthermore, the clamping device includes a first adjustment seat, a second adjustment seat arranged on the first adjustment seat, and a clamping seat arranged on the second adjustment seat.

[0014] Furthermore, the second adjustment seat is horizontally arranged on the first adjustment seat.

[0015] A method for testing a relay dynamic spring performance test device comprises the following steps:

[0016] Step S1, clamping the relay in the clamping device, with the side provided with the moving spring facing the dynamometer, and keeping the moving spring and the static spring of the relay in a disconnected state;

[0017] Step S2, adjusting the position of the lifting assembly and the sliding assembly so that the lever of the dynamometer abuts against the end surface of the moving spring in the relay away from the static spring, and the value of the dynamometer is reset to zero;

[0018] Step S3, adjusting the micrometer so that the detection end of the micrometer abuts against the end surface of the upper slide, and returning the value of the micrometer to zero;

[0019] Step S4, starting the dynamometer, adjusting the micrometer to put the elastic member in a stretched state, and driving the lever to drive the movable spring to move until the movable spring and the static spring collide with each other, and recording the value of the force applied by the dynamometer when the movable spring and the static spring are in contact, and the displacement distance monitored by the micrometer;

[0020] Step S5, powering on the relay so that the moving reed and the stationary reed are combined together under the action of the electromagnetic coil and the magnetic steel assembly;

[0021] Step S6, adjusting the positions of the lifting assembly and the sliding assembly so that the lever of the dynamometer is inserted between the moving spring and the stationary spring and abuts against the end surface of the moving spring facing the stationary spring, and the dynamometer value is reset to zero;

[0022] Step S7, adjusting the micrometer so that the upper slide table causes the dynamometer to slide in a direction away from the relay under the action of the restoring force of the elastic member, and in the process of the dynamometer sliding in a direction away from the relay, the lever pulls the movable spring piece to move in a direction away from the static spring piece until the movable spring piece and the static spring piece are separated, and at the same time, recording the force value recorded by the dynamometer when the movable spring piece and the static spring piece are separated, and the displacement distance monitored by the micrometer;

[0023] Step S8, repeating steps S2 to S7, recording multiple sets of pulling force and pushing force and distance data and drawing a curve graph, and then comparing it with the standard curve graph to determine whether the measured relay meets the requirements.

[0024] Compared with the prior art, the test device for the dynamic spring performance of the relay provided by the present invention can realize the measurement of the thrust and distance when the dynamic spring piece and the static spring piece are closed, and can also realize the measurement of the tension and distance when the dynamic spring piece and the static spring piece are disconnected, so that the test device can be used for multiple purposes. At the same time, after the thrust and distance measurement is completed, the tension and distance measurement can be carried out, which saves time and ensures the measurement accuracy. Specifically, the sliding assembly is composed of a lower slide, an upper slide, and two elastic members, the displacement monitoring unit is arranged on the lower slide, and the dynamometer is arranged on the upper slide. During the test, the displacement monitoring unit is first used to push against the upper slide, so that the dynamometer measures the thrust and distance when the dynamic spring piece and the static spring piece are closed. Then, under the action of the restoring force of the elastic member, the dynamometer measures the tension and distance when the dynamic spring piece and the static spring piece are disconnected, so that time can be saved and the accuracy of the corresponding relationship between the tension and the distance when the dynamic spring piece and the static spring piece are disconnected can be ensured. By measuring the force used and the distance traveled when the relay is closed or opened, the specifications and parameters of the electromagnetic coil and magnetic steel components used in the relay can be further adjusted, thereby avoiding the situation where the relay cannot be fully closed or opened due to the existence of the Lorentz force, thereby improving the stability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic structural diagram of a device for testing the performance of a relay dynamic spring provided by the present invention.

[0026] Figure 2 for Figure 1 Schematic diagram of the structure of the test device for the dynamic spring performance of the relay from another perspective.

[0027] Figure 3 for Figure 1 A partial enlarged view of the relay dynamic spring performance test device at point A.

[0028] Figure 4 for Figure 1 A schematic diagram of the structure of a track base plate of a relay dynamic spring performance test device having.

[0029] Figure 5 for Figure 1 A schematic diagram of the structure of an upper slide table having a device for testing the performance of a relay dynamic spring.

[0030] Figure 6 A step diagram of a method for testing the performance of a relay dynamic spring provided by the present invention.

[0031] Figure numerals: relay: 1; moving reed: 2; stationary reed: 3; contact: 4; detection device: 10; lifting assembly: 11; sliding assembly: 12; displacement monitoring unit: 13; dynamometer: 14; base: 111; screw rod: 112; platform: 113; lower slide: 121; upper slide: 122; elastic member: 123; slide rail: 124; lower abutment bar: 125; guide bar: 126; upper abutment bar: 127; bracket: 131; micrometer: 132; output rod: 141; lever 142; clamping device: 20; first adjustment seat: 21; second adjustment seat: 22; clamping seat: 23. DETAILED DESCRIPTION

[0032] The specific embodiments of the present invention are further described in detail below. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the protection scope of the present invention.

[0033] like Figures 1 to 5 As shown in the figure, it is a schematic diagram of a relay dynamic spring performance test device and its structure provided by the present invention. The relay dynamic spring performance test device is used to test the tension of a dynamic spring of a relay 1 when it is powered on in the forward direction and disconnected from the static spring, and the thrust of the dynamic spring and the static spring when it is powered on in the reverse direction, and the relationship between the tension and thrust and the distance. Figure 4 As shown, the relay 1 includes a moving reed 2, a stationary reed 3, and two contacts 4 respectively arranged on opposite end surfaces of the moving reed 2 and the stationary reed 3. The relay 1 itself is prior art, and its structure and working principle are not described in detail here.

[0034] The relay dynamic spring performance test device and test method include a detection device 10 and a clamping device 20 arranged on one side of the detection device 10. It can be imagined that the relay dynamic spring performance test device and test method also include other functional structures, such as mounting components, connecting components, etc., which are well known to those skilled in the art and will not be described in detail here.

[0035] The detection device 10 includes a lifting assembly 11 , a sliding assembly 12 disposed on the lifting assembly 11 , a displacement monitoring unit 13 disposed on the sliding assembly 12 , and a dynamometer 14 disposed on the sliding assembly 12 and interacting with the displacement monitoring unit 13 .

[0036] The lifting assembly 11 includes a base 111, a screw rod 112 vertically disposed on the base 111, and a platform 113 slidably disposed on the screw rod 112. Figure 1 and Figure 2The base 111 may be a groove-shaped structure. The screw rod 112 is vertically arranged in the groove-shaped structure and is fixedly connected to a handle wheel, so that the screw rod 112 is rotated by rotating the handle wheel. The platform 113 is screwed to the screw rod 112, so that the upper and lower positions of the platform 113 can be adjusted by rotating the handle wheel.

[0037] The sliding assembly 12 includes a lower sliding platform 121 fixedly disposed on the lifting assembly 11 , an upper sliding platform 122 slidably disposed on the lower sliding platform 121 , and at least one elastic member 123 disposed between the lower sliding platform 121 and the upper sliding platform 122 .

[0038] like Figure 4 As shown, the lower slide 121 is provided with two slide rails 124 spaced apart from each other, and at least one lower abutment bar 125 disposed between the two slide rails 124. The extension direction of the lower abutment bar 125 is perpendicular to the extension direction of the slide rail 124. One end of the elastic member 123 is fixed in the lower abutment bar 125. The number of the lower abutment bars 125 is the same as that of the elastic members 123. In the present embodiment, the number of the lower abutment bars 125 and the number of the elastic members 123 are both two. A gap is left between the two lower abutment bars 125 to facilitate the sliding of the upper slide 122. The two lower abutment bars 125 can also be designed to be one, and the two ends are respectively connected to the two slide rails 124.

[0039] like Figure 5 As shown, three guide bars 126 arranged at intervals are arranged on the side of the upper slide 122 facing the lower slide 121, and two upper abutment bars 127 are arranged respectively between two adjacent guide bars 126. When the upper slide 122 is slidably arranged on the lower slide 121, the middle guide bar 126 can pass through the gap between the two lower abutment bars 125, so that the middle guide bar 126 can play a guiding role when sliding. The two abutment bars 127 are engaged with the other end of the elastic member 123 to accommodate the two elastic members 123. And when the two lower abutment bars 125 are designed as the above-mentioned one, and the two ends are respectively connected to the slide rail 124, the number of the guide bars 126 is two arranged on both sides of the upper slide 122.

[0040] See also Figure 4 as well as Figure 5The cross-sections of the slide rails 124 on the two lower slides 121 are trapezoidal, and the cross-sections of the guide bars 126 on both sides of the upper slide 122 are also trapezoidal, and the inclined angles of the inclined surfaces of the slide rails 124 and the guide bars 126 are the same and coincident. When the lower slide 121 and the upper slide 122 are assembled together, the inner inclined surface of the guide bar 126 fits with the outer inclined surface of the slide rail 124, so that the slide rail 124 and the guide bar 126 can slide along the length direction, and the upper slide 122 can be relatively fixed on the lower slide 121 in the vertical direction.

[0041] The elastic member 123 is clamped and fixed between the lower abutting bar 125 and the upper abutting bar 127. When the upper slide 122 slides relative to the lower slide 121, the elastic member 123 can be stretched, thereby also generating a pulling force to restore the upper slide 122 to its original position.

[0042] When the elastic member 123 is in a stress-free state, the upper slide 122 and the lower slide 121 are in an initial state, that is, the value of the micrometer 132 described below is zero. When the upper slide 122 is pulled, the elastic member 123 can pull the upper slide 122 back by its own resilience.

[0043] The displacement monitoring unit 13 includes a bracket 131 disposed at one end of the lower slide 121, and a micrometer 132 disposed on the bracket 131. The bracket 131 is vertically disposed at the other end of the lower slide 121 facing away from the clamping device 20, so that the micrometer 132 can push the upper slide 122 toward the clamping device 20. The abutting top of the micrometer 132 is pressed against the other end of the upper slide 122 facing away from the clamping device 20, so that the dynamometer 14 disposed on the upper slide 122 can be pushed toward the clamping device 20. While the micrometer 132 pushes the dynamometer 14 toward the clamping device 20, the micrometer 132 can also record the distance traveled by the upper slide 122.

[0044] The dynamometer 14 is arranged on the upper slide 122 and moves with the upper slide 122. The dynamometer 14 has an output rod 141 and a lever 142 arranged on the output rod 141. The extension direction of the lever 142 is perpendicular to the extension direction of the output rod 141. The dynamometer 14 itself is a prior art and will not be described in detail here. The clamping device 20 includes a first adjustment seat 21, a second adjustment seat 22 arranged on the first adjustment seat 21, and a clamping seat 23 arranged on the second adjustment seat 22.

[0045] The adjustment directions of the first adjustment seat 21 and the second adjustment seat 22 are vertical to achieve adjustment in two-dimensional directions. It can be imagined that the structures and operating principles of the first adjustment seat 21 and the second adjustment seat 22 are prior art, such as respectively including a frame, a screw rod arranged on the frame, and a slider screwed on the screw rod. Position adjustment in two-dimensional directions can be achieved by driving the screw rod to rotate. The first adjustment seat 21 is used to adjust the distance between the second adjustment seat 22 and the lever 142. The second adjustment seat 22 is horizontally arranged on the first adjustment seat 21. The second adjustment seat 22 is used to adjust the distance between the clamping seat 23 and the lever 142.

[0046] The clamping seat 23 is a clamping device currently available on the market, such as a bench vise, which is a universal clamp for clamping workpieces and can clamp and fix the relay 1 to facilitate subsequent testing.

[0047] During the test, firstly, the lever 142 is brought into contact with the moving spring 2 and the dynamometer 14 is reset to zero, and then the micrometer 132 is rotated so that the top end of the micrometer 132 abuts against the upper slide 122 and slides toward the relay 1 until the moving spring 2 abuts against the static spring 3, and at this time, the distance traveled on the micrometer 132 and the value measured on the dynamometer 14 are recorded. In this process, the elastic member 123 is stretched under the abutment of the micrometer 132, thereby storing the restoring elastic force.

[0048] Then, the relay 1 is powered on to merge the moving spring 2 with the static spring 3, and then the first adjustment seat 21 and the second adjustment seat 22 are adjusted to insert the lever 142 between the moving spring 2 and the static spring 3, and the dynamometer 14 is reset to zero. Then, the micrometer 132 is rotated in the opposite direction to retract the top end, so that the upper slide 122 slides away from the relay 1, and the sliding of the upper slide 122 is pulled away from the relay 1 by the restoring elastic force stored by the elastic member 123. At the same time, the sliding distance of the upper slide 122 is determined by the micrometer 132, so the micrometer 132 should be rotated slowly to avoid measurement errors, that is, to avoid the sliding distance of the upper slide 122 not corresponding to the moment when the moving spring 2 and the static spring 3 are separated. Therefore, as the top end of the micrometer 132 is retracted, the resilience of the elastic member 123 pulls the lever 142 on the dynamometer 14 to move away from the relay 1, until the movable spring 2 is separated from the static spring 3. At this time, the distance traveled on the micrometer 132 and the value measured on the dynamometer 14 are recorded.

[0049] Since the force that merges the movable spring piece 2 and the static spring piece 3 is not equal to the force that separates the movable spring piece 2 and the static spring piece 3, the movable spring piece 2 and the static spring piece 3 are separated by the rebound force of the elastic member 123 during the gradual release process, and due to the abutment of the micrometer 132 during the gradual release of the rebound force of the elastic member 123, it can be avoided that the upper slide 122 is still sliding when the movable spring piece 2 and the static spring piece 3 are separated, so that the force that separates the movable spring piece 2 and the static spring piece 3 corresponds to the sliding distance of the upper slide 122, that is, the distance that the abutment top of the micrometer 132 is retracted, thereby ensuring the accuracy of the measurement.

[0050] like Figure 6 As shown, it is a step diagram of a method for testing the performance of a relay dynamic spring provided by the present invention.

[0051] A method for testing a relay dynamic spring performance test device comprises the following steps:

[0052] Step S1, clamping the relay 1 in the clamping device 20, with the side provided with the moving spring 2 facing the dynamometer 14, and keeping the two contacts 4 of the relay 1 in a disconnected state;

[0053] Step S2, adjusting the positions of the lifting assembly 11 and the sliding assembly 12 so that the lever 142 of the dynamometer 14 abuts against the end surface of the moving reed 2 in the relay 1 away from the contact 4 of the static reed 3, and the value of the dynamometer 14 is reset to zero;

[0054] Step S3, adjusting the micrometer 132 so that the abutting top of the micrometer 132 abuts against the end surface of the upper slide 122, and returning the value of the micrometer 132 to zero;

[0055] Step S4, start the dynamometer 14, adjust the micrometer 132 to put the elastic member 123 in a stretched state, and at the same time, the lever 142 drives the movable spring 2 to move until the two contacts 4 collide with each other, and record the value of the force applied by the dynamometer 14 when the two contacts 4 are in contact, and the displacement distance monitored by the micrometer 132;

[0056] Step S5, powering on the relay 1, so that the two contacts 4 are merged together under the action of the electromagnetic coil and the magnetic steel assembly;

[0057] Step S6, adjusting the positions of the lifting assembly 11 and the sliding assembly 12 so that the lever 142 of the dynamometer 14 is inserted between the moving reed 2 and the stationary reed 3 and abuts against the end surface of the moving reed 2 and the contact 4 facing the stationary reed 3, and the value of the dynamometer 14 is reset to zero;

[0058] Step S7, adjusting the micrometer 132 so that the upper slide 122 causes the dynamometer 14 to slide in a direction away from the relay 1 under the action of the restoring force of the elastic member 123, and during the sliding of the dynamometer 14 in a direction away from the relay 1, the lever 142 pulls the movable reed 2 in a direction away from the static reed 3 until the two contacts 4 are separated, and simultaneously recording the force value recorded by the dynamometer 14 until the two contacts 4 are separated, and the displacement distance monitored by the micrometer 132;

[0059] Step S8, repeating steps S2 to S7, recording multiple sets of pulling force and pushing force and distance data and drawing curves, and then comparing with the standard curve to determine whether the measured relay 1 meets the requirements.

[0060] Compared with the prior art, the test device for the dynamic spring performance of the relay provided by the present invention can realize the measurement of the thrust and distance when the dynamic spring piece 2 and the static spring piece 3 are closed, and can also realize the measurement of the tension and distance when the dynamic spring piece 2 and the static spring piece 3 are disconnected, so that the test device can be used for multiple purposes. At the same time, after the thrust and distance measurements are completed, the tension and distance measurements can be performed, which saves time and ensures the measurement accuracy. Specifically, the sliding assembly 12 is composed of a lower slide 121, an upper slide 122, and two elastic members 123. The displacement monitoring unit 13 is arranged on the lower slide 121, and the dynamometer 14 is arranged on the upper slide 122. During the test, the displacement monitoring unit 13 is first pressed against the upper slide 122, so that the dynamometer 14 measures the thrust and distance when the dynamic spring piece 2 and the static spring piece 3 are closed. Then, under the restoring force of the elastic member 123, the dynamometer 14 measures the tension and distance when the moving spring 2 and the static spring 3 are disconnected, thereby saving time and ensuring the accuracy of the corresponding relationship between the tension and distance when the moving spring 2 and the static spring 3 are disconnected. By measuring the force used and the distance traveled when the relay is closed or opened, the specifications and parameters of the electromagnetic coil and the magnetic steel assembly used in the relay can be further adjusted, thereby avoiding the situation where the relay cannot be fully closed or opened due to the existence of the Lorentz force, thereby improving the stability of the product.

[0061] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modification, equivalent substitution or improvement within the spirit of the present invention is included in the scope of the claims of the present invention.

Claims

1. A device for testing the performance of a dynamic spring of a relay, wherein the relay comprises a set of dynamic springs and static springs, and wherein: The testing device for the performance of the dynamic spring of the relay includes a detection device and a clamping device arranged on one side of the detection device. The detection device includes a lifting component, a sliding component arranged on the lifting component, a displacement monitoring unit arranged on the sliding component, and a dynamometer arranged on the sliding component and interacting with the displacement monitoring unit. The lifting component is used to drive the sliding component to reciprocate in the vertical direction. The sliding component includes a lower slide fixedly arranged on the lifting component, an upper slide slidably arranged on the lower slide, and at least one elastic member arranged between the lower slide and the upper slide. The displacement monitoring unit includes a bracket arranged at one end of the lower slide, and a micrometer arranged on the bracket. The dynamometer is arranged on the upper slide. The upper slide is movable with the upper slide, and has an output rod and a lever arranged on the output rod, the clamping device is used to clamp and fix the relay, the lever abuts on the side of the moving spring sheet facing away from the static spring sheet and rotates the micrometer to abut the upper slide until the moving spring sheet and the static spring sheet are merged, at this time, the distance traveled by the micrometer and the value measured by the dynamometer are recorded, and at the same time, the elastic member is stretched, the relay is powered on to merge the moving spring sheet and the static spring sheet, the position of the lever is adjusted to insert the lever between the moving spring sheet and the static spring sheet, the micrometer is rotated in the opposite direction to allow the restoring force of the elastic member to pull the upper slide sheet to slide away from the relay until the moving spring sheet and the static spring sheet are separated, at this time, the distance traveled by the micrometer and the value measured by the dynamometer are recorded to complete the test of the dynamic spring performance of the relay.

2. The relay dynamic spring performance testing device according to claim 1, characterized in that: The lifting assembly includes a base, a vertically arranged screw rod, and a carrier slidably arranged on the screw rod.

3. The relay dynamic spring performance testing device according to claim 2, characterized in that: The base is a groove-shaped structure, and the screw rod is vertically arranged in the groove-shaped structure.

4. The relay dynamic spring performance testing device according to claim 2, characterized in that: The carrier is screwed onto the lead screw.

5. The relay dynamic spring performance testing device according to claim 1, characterized in that: The lower slide platform is provided with two slide rails arranged at intervals, and at least one lower support bar arranged between the two slide rails.

6. The relay dynamic spring performance testing device according to claim 1, characterized in that: Three guide bars arranged at intervals are arranged on a side of the upper slide platform facing the lower slide platform, and two upper abutting bars are arranged respectively between two adjacent guide bars.

7. The relay dynamic spring performance testing device according to claim 1, characterized in that: The detection end of the micrometer is connected to the end surface of the upper slide.

8. The relay dynamic spring performance testing device according to claim 1, characterized in that: The clamping device includes a first adjustment seat, a second adjustment seat arranged on the first adjustment seat, and a clamping seat arranged on the second adjustment seat.

9. The relay dynamic spring performance testing device according to claim 8, characterized in that: The second adjustment seat is horizontally arranged on the first adjustment seat.

10. A method for testing the relay dynamic spring performance testing device according to any one of claims 2 to 9, comprising the following steps: Step S1, clamping the relay in the clamping device, with the side provided with the moving spring facing the dynamometer, and keeping the moving spring and the static spring of the relay in a disconnected state; Step S2, adjusting the position of the lifting assembly and the sliding assembly so that the lever of the dynamometer abuts against the end surface of the moving spring in the relay away from the static spring, and the value of the dynamometer is reset to zero; Step S3, adjusting the micrometer so that the detection end of the micrometer abuts against the end surface of the upper slide, and returning the value of the micrometer to zero; Step S4, starting the dynamometer, adjusting the micrometer to put the elastic member in a stretched state, and driving the lever to drive the movable spring to move until the movable spring and the static spring collide with each other, and recording the value of the force applied by the dynamometer when the movable spring and the static spring are in contact, and the displacement distance monitored by the micrometer; Step S5, powering on the relay so that the moving reed and the stationary reed are combined together under the action of the electromagnetic coil and the magnetic steel assembly; Step S6, adjusting the positions of the lifting assembly and the sliding assembly so that the lever of the dynamometer is inserted between the moving spring and the stationary spring and abuts against the end surface of the moving spring facing the stationary spring, and the dynamometer value is reset to zero; Step S7, adjusting the micrometer so that the upper slide table causes the dynamometer to slide in a direction away from the relay under the action of the restoring force of the elastic member, and in the process of the dynamometer sliding in a direction away from the relay, the lever pulls the movable spring piece to move in a direction away from the static spring piece until the movable spring piece and the static spring piece are separated, and at the same time, recording the force value recorded by the dynamometer when the movable spring piece and the static spring piece are separated, and the displacement distance monitored by the micrometer; Step S8, repeating steps S2 to S7, recording multiple sets of pulling force and pushing force and distance data and drawing a curve graph, and then comparing it with the standard curve graph to determine whether the measured relay meets the requirements.

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