Photovoltaic electric push rod load capacity test device

Abstract

The application discloses a photovoltaic electric push rod load capacity test equipment, which comprises a test rack, a photovoltaic damper and a counterweight arranged on the test rack, a test sliding table arranged on the test rack, the test sliding table being composed of an upper sliding plate and a lower sliding plate, a non-working end of the electric push rod being connected with the test rack, a working end of the electric push rod being connected with the upper sliding plate, a height adjusting plate being arranged on the test rack, a non-working end of the photovoltaic damper being connected with the height adjusting plate, a working end of the photovoltaic damper being connected with the lower sliding plate, a locking piece being arranged on the height adjusting plate, and a locked piece being arranged on the lower sliding plate. The photovoltaic damper and the counterweight are matched with the test sliding table and the height adjusting plate, the electric push rod thrust and tension load are accurately simulated, the lower sliding plate is separated from the upper sliding plate during tension test, the photovoltaic damper does not affect the tension test of the electric push rod, the lower sliding plate is stably lifted back through electromagnetic adsorption of the slow lifting frame during reset, and the test accuracy and safety are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric push rod testing equipment, in particular to a photovoltaic electric push rod load capacity testing equipment. BACKGROUND

[0002] In a photovoltaic tracking system, an electric push rod is a key executive component for driving a photovoltaic support to realize angle adjustment, and its load performance directly affects the operation stability and control accuracy of the system. In order to ensure that the electric push rod can work reliably under different working conditions, the working current of the electric push rod under various load conditions needs to be accurately tested and evaluated, thereby providing a basis for damper parameter matching and photovoltaic support structure design. At present, the conventional load capacity testing method is usually to evaluate the load performance by collecting the working current data of the electric push rod through on-site operation after the electric push rod is installed to the actual photovoltaic support. The disadvantage is that the testing method is tedious, and data needs to be collected on site at the photovoltaic support, and at the same time, the testing results under various environments cannot be simulated.

[0003] In the prior art, for example, a photovoltaic tracking electric push rod life testing device disclosed in a Chinese utility model patent (authorized publication number CN210775079U) includes an electric push rod and a controller. The electric push rod includes a push rod and a motor. The push rod includes a push rod shell and a push arm. The motor is arranged on the push rod shell, and the motor is electrically connected with the controller. Limit switches are arranged at the maximum and minimum stroke positions of the push arm of the electric push rod, and the limit switches are electrically connected with the motor. A clamp meter is electrically connected to the motor for monitoring the maximum operating current of the electric push rod. The testing device further includes first and second main beams which are parallel to each other and are rotatably fixed on a stand, a transmission mechanism fixedly arranged between the first and second main beams, and a load unit suspended on the first and second main beams. A support seat for fixing the push rod shell is further arranged on the first main beam. The output end of the push arm of the electric push rod is fixed on the transmission mechanism. The electric push rod drives the transmission mechanism to synchronously rotate the two main beams to simulate the actual operating state of the electric push rod in the photovoltaic tracking system.

[0004] The above prior art drives the main beam to rotate by the push rod. When the electric push rod runs to the maximum or minimum stroke point, the limit switch is triggered, thereby controlling the motor to stop working. The controller receives the feedback pulse signal of the motor to control the motor of the electric push rod to reverse, thereby simulating the actual operating state of the electric push rod in the photovoltaic tracking system in actual operation, and monitoring the operating current of the electric push rod.

[0005] However, the prior art can simulate the reciprocating motion of the electric push rod in the photovoltaic tracking system and monitor the operating current, but the test device drives the main beam to rotate as a whole through the transmission mechanism to apply the load. When the tension test is performed, the test device will be affected by the counter thrust, thereby adversely affecting the accuracy of the test results. Therefore, there is a need for a photovoltaic electric push rod load capacity test device that can accurately apply and real-time feedback the load. SUMMARY

[0006] In view of the problems of the prior art, a photovoltaic electric push rod load capacity test device is provided. The test slide table cooperates with the photovoltaic damper and the counterweight to accurately simulate the thrust and tension load of the electric push rod. When the tension test is performed, the lower slide plate and the upper slide plate are separated, so that the photovoltaic damper does not affect the tension test of the electric push rod. When the lower slide plate is reset, the electromagnetic adsorption of the slow push bracket is used to achieve smooth lifting, thereby improving the test accuracy and safety.

[0007] To solve the problems of the prior art, the present application provides a photovoltaic electric push rod load capacity test device, which comprises a test rack. The test rack is provided with a photovoltaic damper for testing the thrust load of the electric push rod and a counterweight for testing the tension load of the electric push rod. A test slide table is slidably arranged on the test rack along the height direction thereof. The test slide table is composed of an upper slide plate and a lower slide plate. The non-working end of the electric push rod is fixedly connected to the top of the test rack, and the working end is fixedly connected to the top of the upper slide plate. The output direction of the electric push rod is perpendicular to the surface of the upper slide plate. A height adjustment plate is slidably arranged on the test rack along the height direction thereof and below the test slide table. The non-working end of the photovoltaic damper is fixedly connected to the top of the height adjustment plate, and the working end is fixedly connected to the bottom of the lower slide plate. The output direction of the photovoltaic damper is perpendicular to the surface of the lower slide plate. The upper slide plate is provided with a counterweight guide shaft for placing the counterweight. A locking member is arranged on the height adjustment plate at the limit position of the lower slide plate relative to the photovoltaic damper. A locked member is arranged on the lower slide plate and cooperates with the locking member. When the electric push rod completes the thrust load test, the lower slide plate is in a locked state. When the electric push rod performs the tension load test, the upper slide plate gradually moves away from the lower slide plate. At this time, the upper slide plate only bears the tension load applied by the counterweight.

[0008] Preferably, a support is arranged around the height adjustment plate. The top of each support is provided with a locking member. The bottom of the lower slide plate is provided with a locked member corresponding to each locking member. The locking member is a first electromagnet, and the locked member is a metal block that can be attracted by the first electromagnet.

[0009] Preferably, a slow push bracket is slidably arranged on the test rack along the height direction thereof and below the lower slide plate. The slow push bracket is provided with a fixing member for fixing the lower slide plate. When the locking state between the lower slide plate and the height adjustment plate is released, the lower slide plate is in a state of slow upward reset under the driving of the slow push bracket.

[0010] Preferably, a support strip horizontally extends inward around the buffer frame, and the lower slide plate is provided with a supported part corresponding to each support strip, each support strip is provided with a second electromagnet, each supported part is provided with a metal strip capable of being adsorbed by the corresponding second electromagnet, and each second electromagnet and the corresponding metal strip jointly form the fixing part.

[0011] Preferably, each support column is provided with a buckle, and each supported part is fixedly provided with a clamping block capable of being matched with the corresponding buckle, and the buckle and the clamping block form a secondary locking structure.

[0012] Preferably, a guide rod extends radially on the support column, the buckle is slidingly arranged on the guide rod, and a tension spring is fixedly connected between the buckle and the support column, when the clamping block presses the upper end of the buckle, the buckle is gradually pushed out along the guide rod, and at this time, the tension spring is in a tension state.

[0013] Preferably, each buckle is fixedly provided with an unlocking plate on the side edge, and the upper end and the lower end of the unlocking plate are chamfered, when the support strip passes through the unlocking plate upwards, the edge of the support strip gradually pushes the unlocking plate along the chamfer, so that the clamping block is unlocked.

[0014] Preferably, each support column is provided with a stop block at the position corresponding to the support strip, and the stop block is arranged below the unlocking plate, when the support strip moves downwards to contact the stop block, the tension spring is in an initial state without being pressed.

[0015] Preferably, two upper magnetic stickers are symmetrically arranged on the upper slide plate, and two lower magnetic stickers are symmetrically arranged on the lower slide plate and magnetically adsorbed with the upper magnetic stickers, when the electric push rod is subjected to thrust load test, the upper slide plate and the lower slide plate are in a close adsorption state, forming a stable linkage structure.

[0016] Preferably, guide columns are arranged around the test frame in the height direction of the test frame and are slidingly connected with the test slide and the height adjusting plate, and a clamp is arranged below the upper slide plate on each guide column and is used to limit the downward sliding of the upper slide plate when the electric push rod is installed.

[0017] The beneficial effects of the present application compared with the prior art are:

[0018] 1. The test slide and the height adjusting plate cooperate with the photovoltaic damper and the counterweight to simulate the thrust and tensile load of the electric push rod respectively. The upper slide plate and the lower slide plate are adsorbed by the magnetic stickers to realize stable linkage during thrust test, so as to ensure that the thrust is effectively transmitted from the upper slide plate to the lower slide plate, and the lower slide plate drives the photovoltaic damper to be compressed together, so as to realize accurate application of the thrust load.

[0019] And in the tensile load test, through the magnetic attraction of the first electromagnet and the metal block, the rigid locking of the lower slide plate and the height adjusting plate is realized when the lower slide plate descends to the limit position, ensuring that the lower slide plate remains stationary during the tensile test and is not affected by the photovoltaic damper, and the electric push rod only bears the pure tensile load provided by the counterweight, improving the test accuracy and efficiency.

[0020] 2. The application realizes reliable connection of the lower slide plate and the buffer frame by setting a fixing part composed of a second electromagnet and a metal strip on the buffer frame. When the lower slide plate needs to be reset, the support strip is in contact with the supported part, and at this time the second electromagnet is energized to attract the metal strip, fixing the lower slide plate to the buffer frame.

[0021] Then the first electromagnet is de-energized to release the locking of the lower slide plate, and the buffer frame drives the lower slide plate to slowly ascend along the guide column, avoiding the rebound impact of the photovoltaic damper. When the lower slide plate is reset to the upper limit position and is in contact with the upper slide plate, the second electromagnet is de-energized to release, and the buffer frame descends to the home position. The stability and controllability of the reset process of the lower slide plate are ensured, and the automation degree and safety of the test cycle are improved.

[0022] 3. The application sets a mechanical secondary locking structure composed of a buckle and a clamping block, which cooperates with the electromagnetic locking composed of the first electromagnet and the metal block. When the lower slide plate descends to the limit position of the photovoltaic damper, the clamping block is automatically pressed down and triggers the buckle to clamp tightly, and the stretching spring stores energy to realize reliable mechanical locking.

[0023] Even if the electromagnetic force disappears due to power failure, the buckle can still remain in the locked state, ensuring that the lower slide plate is absolutely stationary during the tensile test. When resetting, the support strip pushes the unlocking plate along the chamfer to forcibly open the buckle to complete the unlocking, ensuring the stability and safety of locking and releasing, and improving the test reliability. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a perspective structural schematic view of a photovoltaic electric push rod load capacity test equipment of the application.

[0025] Figure 2 is a left view of a photovoltaic electric push rod load capacity test equipment of the application.

[0026] Figure 3 is a partial perspective structural schematic view of a photovoltaic electric push rod load capacity test equipment of the application.

[0027] Figure 4 is a partial perspective structural sectional view of a photovoltaic electric push rod load capacity test equipment of the application.

[0028] Figure 5 is an enlarged schematic view of A of the application. Figure 4

[0029] ​Figure 6 is a partial perspective view of the electric push rod of a photovoltaic electric push rod load capacity test device of the present application performing a thrust load test.

[0030] Figure 7 is a plane cross-sectional view of the electric push rod of a photovoltaic electric push rod load capacity test device of the present application performing a thrust load test.

[0031] Figure 8 is a perspective view of the electric push rod of a photovoltaic electric push rod load capacity test device of the present application performing a tensile load test.

[0032] Figure 9 is a partial perspective view of the upper slide plate and the lower slide plate of a photovoltaic electric push rod load capacity test device of the present application not being separated.

[0033] Figure 10 is a perspective view of the lower slide plate of a photovoltaic electric push rod load capacity test device of the present application being driven by a slow push frame.

[0034] In the figure, the reference numerals are: 1, electric push rod; 2, test rack; 21, guide column; 22, clamp; 3, photovoltaic damper; 31, height adjustment plate; 311, support column; 3111, guide rod; 3112, tension spring; 3113, stop block; 312, first electromagnet; 313, metal block; 314, buckle; 3141, unlocking plate; 315, clamping block; 32, elevator; 4, counterweight; 5, test slide table; 51, upper slide plate; 511, counterweight guide shaft; 512, upper magnetic sticker; 52, lower slide plate; 521, supported part; 522, lower magnetic sticker; 6, slow push frame; 61, support strip; 611, second electromagnet; 612, metal strip. DETAILED DESCRIPTION

[0035] In order to further understand the features, technical means and specific purposes and functions achieved by the present application, the present application is described in further detail below in combination with the drawings and specific embodiments.

[0036] Reference Figures 1-10As shown, a photovoltaic electric push rod load capacity test device comprises a test rack 2, a photovoltaic damper 3 for testing the thrust load of an electric push rod 1 and a counterweight 4 for testing the tension load of the electric push rod 1 are arranged on the test rack 2, a test sliding table 5 is arranged on the test rack 2 and slides along the height direction of the test rack 2, the test sliding table 5 is composed of an upper sliding plate 51 and a lower sliding plate 52, the non-working end of the electric push rod 1 is fixedly connected to the top of the test rack 2, the working end is fixedly connected to the top of the upper sliding plate 51, the output direction of the electric push rod 1 is perpendicular to the surface of the upper sliding plate 51, a height adjusting plate 31 is arranged on the test rack 2 and slides along the height direction of the test rack 2 below the test sliding table 5, the non-working end of the photovoltaic damper 3 is fixedly connected to the top of the height adjusting plate 31, the working end is fixedly connected to the bottom of the lower sliding plate 52, the output direction of the photovoltaic damper 3 is perpendicular to the surface of the lower sliding plate 52, the top of the upper sliding plate 51 is provided with a counterweight guide shaft 511 for placing the counterweight 4, a locking member is arranged on the height adjusting plate 31 at the limit position of the lower sliding plate 52 to the photovoltaic damper 3, a locked member is arranged on the lower sliding plate 52 and cooperates with the locking member, when the electric push rod 1 completes the thrust load test, the lower sliding plate 52 is in a locked state, when the electric push rod 1 performs the tension load test, the upper sliding plate 51 gradually moves away from the lower sliding plate 52, at this time, the upper sliding plate 51 only bears the tension load applied by the counterweight 4.

[0037] The test rack 2 is provided with an elevator 32 for driving the height adjusting plate 31 to slide.

[0038] When starting the load capacity test of the photovoltaic electric push rod 1, first, the non-working end of the electric push rod 1 to be tested is fixedly connected to the top of the test rack 2, the working end faces downward and is rigidly connected to the top of the upper sliding plate 51 of the test sliding table 5, and the output direction of the electric push rod 1 is perpendicular to the surface of the upper sliding plate 51. At the same time, the non-working end of the photovoltaic damper 3 is fixedly connected to the top of the height adjusting plate 31, the working end is fixedly connected to the bottom of the lower sliding plate 52, the output direction of the photovoltaic damper 3 is perpendicular to the surface of the lower sliding plate 52, and the damper can truly simulate the structural resistance of the photovoltaic support in actual operation during the thrust test.

[0039] When the electric push rod 1 thrust load test is carried out, first of all, the height adjusting plate 31 is driven along the height direction of the test frame 2 by the elevator 32 arranged on the test frame 2, so that the photovoltaic damper 3 is in the preset initial working position. Subsequently, the electric push rod 1 is started, and the working end thereof is extended downward to push the upper slide plate 51 to move downward. Since the upper slide plate 51 and the lower slide plate 52 are in linkage in the initial stage, the downward movement of the upper slide plate 51 drives the lower slide plate 52 to move downward together, so as to compress the photovoltaic damper 3, and generate a load resistance opposite to the thrust direction of the electric push rod 1, thereby simulating the structural reaction force borne by the electric push rod 1 when the electric push rod 1 pushes the support to rotate in the actual photovoltaic tracking system. In this process, the working current data of the electric push rod 1 are collected in real time, and the load characteristics provided by the damper are combined, so that the performance of the electric push rod 1 under different thrust working conditions can be accurately evaluated.

[0040] When the electric push rod 1 completes the thrust load test and is retracted to the upper limit position, the locking part arranged on the height adjusting plate 31 cooperates with the corresponding locked part on the lower slide plate 52 to realize the locking of the lower slide plate 52, so that the lower slide plate 52 cannot move upward together with the upper slide plate 51. It is ensured that the lower slide plate 52 remains stationary during the subsequent tension load test, so as to avoid interference with the accuracy of the tension test due to the transmission of the reverse force.

[0041] When switching to the electric push rod 1 tension load test stage, first of all, it is confirmed that the lower slide plate 52 is in a completely fixed state through the cooperation of the locking part and the locked part, at this time, the photovoltaic damper 3 no longer participates in the process of applying the tension load. Subsequently, the counterweight block 4 with a preset weight is installed on the counterweight guide shaft 511 at the top of the upper slide plate 51, and the gravity of the counterweight block 4 acts vertically on the upper slide plate 51 through the guide shaft, thereby forming a downward static tension load. At this time, the electric push rod 1 is started, and the working end thereof is gradually retracted from the extended state, and the upper slide plate 51 moves upward, but due to the gravity of the counterweight block 4, the upper slide plate 51 continuously bears the downward tension from the counterweight block 4 during the upward movement, and the tension is directly transmitted to the working end of the electric push rod 1 through the upper slide plate 51, thereby simulating the load working condition borne by the electric push rod 1 when performing the pullback action in the actual application.

[0042] During the entire tension test process, since the lower slide plate 52 has been locked and the photovoltaic damper 3 does not participate in the force, the electric push rod 1 only bears the pure tension load provided by the counterweight block 4, thereby effectively avoiding the measurement error caused by the reverse thrust of the transmission structure in the traditional test method.

[0043] When the electric push rod 1 completes the full-stroke retraction action under the tension load applied by the counterweight block 4, the locking part and the locked part cooperate to release the locking state of the lower slide plate 52, so that the lower slide plate 52 is reset upward to re-link with the upper slide plate 51, and the electric push rod 1 can control the output shaft to extend again, thereby repeating the tension and retraction cycle for multiple times, so as to evaluate the stability, response characteristics and current change law of the electric push rod 1 under the dynamic tension load.

[0044] During the test, all the working current data are recorded in real time by an external acquisition system, and the output performance of the electric push rod 1 under different load conditions can be accurately calculated by combining the preset mass of the photovoltaic damper 3 and the counterweight 4 and the stroke parameters of the electric push rod 1.

[0045] Referring to Figures 1-7 As shown, the height adjusting plate 31 is provided with a support 311 around the periphery, and the top of each support 311 is provided with a locking piece, and the bottom of the lower slide plate 52 is provided with a locked piece corresponding to each locking piece, and the locking piece is specifically a first electromagnet 312, and the locked piece is specifically a metal block 313 that can be attracted by the first electromagnet 312.

[0046] When the lower slide plate 52 is driven by the electric push rod 1 to move downward together with the upper slide plate 51 to compress the photovoltaic damper 3 to simulate the thrust load, the movement trajectory is along the height direction of the test rack 2 until it reaches the stroke limit position of the photovoltaic damper 3.

[0047] When the lower slide plate 52 reaches the stroke limit position of the photovoltaic damper 3, the control system starts the electromagnet to generate a magnetic force to firmly attract the metal block 313 at the bottom of the lower slide plate 52, thereby realizing the rigid locking between the lower slide plate 52 and the height adjusting plate 31. Ensure that the lower slide plate 52 cannot move upward with the upper slide plate 51 in the subsequent test stage, and provide stable foundation support for the upcoming tension load test.

[0048] Referring to Figures 1-6 As shown, the test rack 2 is provided with a slow push frame 6 sliding along the height direction thereof, and the slow push frame 6 is arranged below the lower slide plate 52, and the slow push frame 6 is provided with a fixing piece for fixing the lower slide plate 52, and when the locking state between the lower slide plate 52 and the height adjusting plate 31 is released, the lower slide plate 52 is in a slow upward resetting movement state driven by the slow push frame 6.

[0049] The driving source for driving the slow push frame 6 is not shown in the figure.

[0050] When the electric push rod 1 completes the tension load test and is ready to enter the next round of thrust load test, if the locking state between the lower slide plate 52 and the height adjusting plate 31 needs to be released, the fixing piece first fixes the lower slide plate 52 and the slow push frame 6, and then the control system disconnects the power supply of the first electromagnet 312, so that the magnetic force disappears, thereby releasing the adsorption of the metal block 313 at the bottom of the lower slide plate 52, and realizing the release of the locking.

[0051] At this time, the lower slide plate 52 is no longer fixed on the height adjusting plate 31, and is slowly moved upward along with the slow-moving frame 6 under the drive of the slow-moving frame 6, so as to realize a stable and controllable resetting process, avoid the impact and vibration of the upper slide plate 51 caused by the rapid rebound of the lower slide plate 52 driven by the photovoltaic damper 3, and ensure the safety and the accurate subsequent test.

[0052] Referring to Figs. 1 and 2, Figure 6 , Figure 9 and Figure 10 , the slow-moving frame 6 is provided with a support strip 61 extending inward and horizontally around the periphery thereof, and the lower slide plate 52 is provided with a supported part 521 corresponding to each support strip 61. Each support strip 61 is provided with a second electromagnet 611, and each supported part 521 is provided with a metal strip 612 capable of being attracted by the corresponding second electromagnet 611. Each second electromagnet 611 and the corresponding metal strip 612 jointly constitute the fixing member.

[0053] When it is necessary to fix the lower slide plate 52 and the slow-moving frame 6, the support strip 61 is inserted into the supported part 521 below to provide support, and the second electromagnet 611 provided on each support strip 61 is aligned with the corresponding metal strip 612 on the supported part 521. The second electromagnet 611 generates a magnetic force after being powered on, firmly attracts the metal strip 612, and stably connects the lower slide plate 52 and the slow-moving frame 6, so that the slow-moving frame 6 stably resets the lower slide plate 52.

[0054] Until the lower slide plate 52 is attached to the upper slide plate 51, the control system disconnects the power supply of the second electromagnet 611, so that the magnetic force disappears, thereby releasing the attraction to the metal strip 612 and realizing the release of the locking. The slow-moving frame 6 is then moved downward to the original position, waiting for the next operation of resetting the lower slide plate 52.

[0055] Referring to Figs. 1 and 2, Figures 6-8 , each support column 311 is provided with a buckle 314, and each supported part 521 is fixedly provided with a clamping block 315 capable of being matched with the corresponding buckle 314. The buckle 314 and the clamping block 315 constitute a secondary locking structure.

[0056] When the tensile load test is performed, on the basis of the preliminary locking of the lower slide plate 52 and the height adjusting plate 31 realized by the power-on attraction of the first electromagnet 312 to the metal block 313, the clamping block 315 is further clamped into the buckle 314 through the downward movement of the lower slide plate 52, and the locking member composed of the first electromagnet 312 and the metal block 313 cooperates with the locked member to enhance the reliability and rigidity of the locking.

[0057] Ensure that the electric push rod 1 in the process of tension load test, the slide plate 52 is more firmly fixed. Even in the process of tension load test, the electric push rod 1 occurs current failure, resulting in the first electromagnet 312 power off, the magnetic force disappears, the buckle 314 can still keep the locking of the clamping block 315 through the mechanical clamping action, thereby ensuring the stability of the slide plate 52, ensuring the accuracy of the tension load test result of the electric push rod 1.

[0058] Referring to Figures 6-8 As shown, the guide rod 3111 extends along the radial direction of the support 311, and the buckle 314 is slidably arranged on the guide rod 3111. The buckle 314 and the support 311 are fixedly connected with the tension spring 3112. When the clamping block 315 presses the upper end of the buckle 314, the buckle 314 is gradually pushed out along the guide rod 3111, and at this time, the tension spring 3112 is in a stretched state.

[0059] When the slide plate 52 moves downward to the limit position, the clamping block 315 on the supporting part 521 moves downward and presses the upper end of the buckle 314. The pressure makes the buckle 314 slide along the guide rod 3111, thereby introducing the clamping block 315 into the buckle 314. With the clamping block 315 continuously pressing, the buckle 314 is gradually pushed out, and at the same time, the tension spring 3112 is elongated and enters a stretched state, storing elastic potential energy.

[0060] When the clamping block 315 completely enters the buckle 314, the buckle 314 has a tendency to tighten inward under the restoring force of the tension spring 3112, thereby firmly clamping the clamping block 315 and forming a stable mechanical locking.

[0061] Referring to Figures 6-9 As shown, the side edge of each buckle 314 is fixedly provided with an unlocking plate 3141, and the upper end and the lower end of the unlocking plate 3141 are chamfered. When the support bar 61 moves upward and passes through the unlocking plate 3141, the edge of the support bar 61 gradually pushes the unlocking plate 3141 along the chamfer, so that the clamping block 315 is unlocked.

[0062] When the slide plate 52 needs to be reset from the locked state, the slow push frame 6 drives the support bar 61 to move upward. The edge of the support bar 61 first contacts the chamfer of the lower end of the unlocking plate 3141. With the support bar 61 continuing to move upward, the edge thereof applies a lateral pushing force along the chamfer to push the unlocking plate 3141 outward, thereby driving the buckle 314 to slide along the guide rod 3111 against the tension of the tension spring 3112, until the clamping action of the clamping block 315 is released, and mechanical unlocking is realized.

[0063] In the process of the support bar 61 going up, until the support bar 61 contacts the supported part 521, the second electromagnet 611 is powered to adsorb the metal bar 612, while the first electromagnet 312 is powered off to release the adsorption of the metal block 313. At this time, the buckle 314 is still in the unlocked state, and with the upward movement of the slow push frame 6, the lower slide plate 52 is driven upward, so that the clamping block 315 is separated from the buckle 314, and the whole unlocking process is completed.

[0064] Referring to Figure 7 and Figure 9 As shown in the drawings, each support bar 61 is provided with a stop block 3113 corresponding to the position of the support bar 61, and the stop block 3113 is arranged below the unlocking plate 3141. When the support bar 61 goes down to contact the stop block 3113, the tension spring 3112 is in the initial state of not being compressed.

[0065] In the process of the support bar 61 going down with the slow push frame 6, the support bar 61 moves downward along the chamfer at the upper end of the unlocking plate 3141, so that the unlocking plate 3141 is pushed away, until the support bar 61 passes through the unlocking plate 3141 and contacts the stop block 3113. At this time, the support bar 61 no longer moves downward. This contact state limits the downward stroke of the support bar 61, and at this position, the tension spring 3112 is in the initial state of not being compressed, providing stable starting conditions for the next unlocking of the buckle 314.

[0066] Referring to Figures 4-9 As shown in the drawings, the upper slide plate 51 is symmetrically provided with two upper magnetic pads 512, and the lower slide plate 52 is symmetrically provided with two lower magnetic pads 522 which are magnetically attracted to the upper magnetic pads 512. When the electric push rod 1 is subjected to a thrust load test, the upper slide plate 51 and the lower slide plate 52 are in a close adsorption state, forming a stable linkage structure.

[0067] When the electric push rod 1 is subjected to a thrust load test, the upper slide plate 51 moves downward under the push of the electric push rod 1, and the lower slide plate 52 moves with it. Since the upper magnetic pads 512 and the lower magnetic pads 522 are magnetically attracted to each other, the upper slide plate 51 and the lower slide plate 52 are in a close adsorption state, ensuring that the upper slide plate 51 and the lower slide plate 52 remain stably connected during the thrust load test, forming a firm linkage structure, thereby ensuring that the thrust is effectively transmitted from the upper slide plate 51 to the lower slide plate 52, driving the lower slide plate 52 to compress the photovoltaic damper 3 together, and accurately applying the thrust load.

[0068] Referring to Figures 2-4 As shown in the drawings, the test frame 2 is provided with guide columns 21 around its height direction for sliding connection of the test slide table 5 and the height adjusting plate 31. Each guide column 21 is provided with a hoop 22 below the upper slide plate 51 to limit the downward movement of the upper slide plate 51 when the electric push rod 1 is installed.

[0069] When the electric push rod 1 has not been installed, the upper slide plate 51 has a downward movement tendency under the action of gravity, at this time the clamp 22 forms a physical block through the fastening connection with the guide column 21 to prevent the upper slide plate 51 from accidentally sliding down, and ensure that the upper slide plate 51 remains at the preset initial height position during installation, providing safety guarantee for stable installation and subsequent test operation of the electric push rod 1.

[0070] The present application realizes the precise simulation of the electric push rod 1 thrust and pull load by testing the cooperation of the slide 5 and the height adjusting plate 31, combining the photovoltaic damper 3 and the counterweight 4.

[0071] During thrust test, the upper slide plate 51 and the lower slide plate 52 are magnetically attracted and linked through the upper magnetic sticker 512 and the lower magnetic sticker 522, ensuring effective transmission of thrust and compression of the photovoltaic damper 3.

[0072] During pull test, the first electromagnet 312 is powered to adsorb the metal block 313 at the bottom of the lower slide plate 52, locking it on the height adjusting plate 31, while the counterweight 4 applies pure pull load, avoiding interference of the photovoltaic damper 3 and improving test accuracy.

[0073] During reset, the second electromagnet 611 is powered to adsorb the metal strip 612, fixing the lower slide plate 52 and the slow push bracket 6, the first electromagnet 312 is powered off, the slow push bracket 6 drives the support strip 61 to go up, and after slowly going up and resetting to adhere to the upper slide plate 51, it is released, the whole process is stable and controllable, effectively preventing rebound impact, improving the automation, safety and reliability of the test cycle.

[0074] The above embodiments only express one or several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the protection scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A photovoltaic electric push rod load capacity test device, comprising a test rack, a photovoltaic damper for testing electric push rod thrust load and a counterweight for testing electric push rod tension load are arranged on the test rack; characterized in that a test sliding table is arranged on the test rack and slides along the height direction of the test rack, the test sliding table is composed of an upper sliding plate and a lower sliding plate, a non-working end of the electric push rod is fixedly connected with the top of the test rack, a working end is fixedly connected with the top of the upper sliding plate, and the output direction of the electric push rod is perpendicular to the surface of the upper sliding plate; a height adjusting plate is arranged on the test rack and slides along the height direction of the test rack below the test sliding table, a non-working end of the photovoltaic damper is fixedly connected with the top of the height adjusting plate, and a working end is fixedly connected with the bottom of the lower sliding plate, and the output direction of the photovoltaic damper is perpendicular to the surface of the lower sliding plate; a counterweight guide shaft is arranged on the top of the upper sliding plate for placing the counterweight; a locking piece is arranged on the height adjusting plate at the limit position of the lower sliding plate to the photovoltaic damper, and a locked piece is arranged on the lower sliding plate and matched with the locking piece; when the electric push rod completes the thrust load test, the lower sliding plate is in a locked state; when the electric push rod performs the tension load test, the upper sliding plate gradually moves away from the lower sliding plate, and at this time, the upper sliding plate only bears the tension load applied by the counterweight.

2. A photovoltaic electric pushrod load capacity test apparatus according to claim 1, wherein, A support column is arranged around the height adjusting plate, a locking piece is arranged at the top of each support column, a locked piece is arranged at the position corresponding to each locking piece at the bottom of the lower sliding plate, the locking piece is a first electromagnet, and the locked piece is a metal block that can be attracted by the first electromagnet.

3. A photovoltaic electric pushrod load capacity test apparatus according to claim 2, wherein, A slow pushing frame is arranged on the test rack and slides along the height direction of the test rack, the slow pushing frame is arranged below the lower sliding plate, a fixing piece for fixing the lower sliding plate is arranged on the slow pushing frame, and when the locking state between the lower sliding plate and the height adjusting plate is released, the lower sliding plate is in an upward slow resetting motion state driven by the slow pushing frame.

4. The photovoltaic electric pushrod load capacity test apparatus of claim 3, wherein, A support strip extending inward horizontally is arranged around the slow pushing frame, a supported part matched with each support strip is correspondingly arranged around the lower sliding plate, a second electromagnet is arranged on each support strip, and a metal strip that can be attracted by the corresponding second electromagnet is arranged on each supported part, each second electromagnet and the corresponding metal strip jointly form the fixing piece.

5. A photovoltaic electric pushrod load capacity test apparatus according to claim 4, wherein A buckle is arranged on each support column, a clamping block matched with the corresponding buckle is fixedly arranged on each supported part, and the buckle and the clamping block form a secondary locking structure.

6. A photovoltaic electric pushrod load capacity test apparatus according to claim 5, wherein, A guide rod extends radially on the support column, the buckle is arranged on the guide rod and is fixedly connected with the support column, when the clamping block presses the upper end of the buckle, the buckle is gradually pushed out along the guide rod, and at this time, the stretching spring is in a stretching state.

7. A photovoltaic electric pushrod load capacity test apparatus according to claim 6, wherein An unlocking plate is fixedly arranged on the side edge of each buckle, the upper end and the lower end of the unlocking plate are chamfered, when the support strip goes up and passes through the unlocking plate, the edge of the support strip gradually pushes the unlocking plate along the chamfer, so that the clamping block is unlocked.

8. The photovoltaic electric pushrod load capacity test apparatus of claim 7, wherein, A stop block is arranged at the position corresponding to the support strip on each support column, and the stop block is arranged below the unlocking plate, when the support strip goes down and contacts the stop block, the stretching spring is in an initial state without being pressed.

9. The photovoltaic electric push pole load capacity testing apparatus of claim 1, wherein, Two upper magnetic pads are symmetrically arranged on the upper slide plate, and two lower magnetic pads are symmetrically arranged on the lower slide plate and magnetically attract the upper magnetic pads. When the electric push rod is subjected to thrust load test, the upper slide plate and the lower slide plate are in a close adsorption state, forming a stable linkage structure.

10. The photovoltaic electric push pole load capacity testing apparatus of claim 1, wherein, The test rack is provided with guide columns for sliding connection of the test slide and the height adjusting plate along the height direction of the test rack. A clamp is arranged below the upper slide plate on each guide column to limit the downward sliding of the upper slide plate when the electric push rod is installed.

Images