An aging test bench for valve electric actuators

Abstract

This invention relates to the technical field of valve electric actuator testing equipment. A valve electric actuator aging test bench includes an operating platform with an integrated controller. A control panel is fixedly connected to the operating platform, comprising an air switch, an emergency stop switch, and a power switch. A control interface is installed on the operating platform, and a protective door is hinged to it. Support legs are fixedly connected to the lower surface of the operating platform. A changing device for adjusting the workpiece position is provided on the operating platform. The changing device includes a base positioned above the operating platform, and a connector plugging / unplugging device is provided on the base. This valve electric actuator aging test bench effectively solves the problem that repeated power outages cause drift in the power supply and signal acquisition reference parameters of the test circuit, further reducing the accuracy and reliability of electrical aging test data.

Description

Technical Field

[0001] This invention belongs to the technical field of valve electric actuator testing equipment, specifically relating to an aging test bench for valve electric actuators. Background Technology

[0002] The valve electric actuator aging test bench is a specialized automated testing equipment designed for various types of rotary, linear, and multi-turn valve electric actuators. It is used to conduct long-term aging simulations under all working conditions, reliability verification, life assessment, and performance degradation detection. Its main functions include on / off cycle aging, load durability testing, and electrical performance aging verification of valve electric actuators. It simulates the frequent opening and closing actions of valves under actual working conditions to verify the long-term operational reliability of the actuators. It is an essential testing device for valve actuator manufacturers to control product quality, verify design reliability, and extend product service life.

[0003] Existing single-station aging test benches for valve electric actuators, after completing the load-bearing start-stop aging test of a single actuator, must perform a complete shutdown and power-off operation due to the safety regulations for high-voltage work and the limitations of the single-station architecture. The test can only be restarted after the disassembly of the tested actuator, wiring, and clamping of the new workpiece. This component replacement process not only generates a large amount of unnecessary shutdown and test restart waiting time, significantly reducing the overall operational efficiency of batch valve electric actuator aging tests, but also disrupts the continuity of the aging test process for multiple batches of actuators. It is impossible to simulate the actual working conditions of long-term continuous start-stop operation, making it difficult to verify the long-term operational reliability of the actuator. At the same time, repeated shutdown and power-off operations will cause the power supply and signal acquisition reference parameters of the test circuit to drift, further reducing the accuracy and reliability of electrical aging test data. Summary of the Invention

[0004] The purpose of this invention is to provide an aging test bench for valve electric actuators that has a simple structure and reasonable design in order to solve the above problems.

[0005] The present invention achieves the above objectives through the following technical solutions:

[0006] An aging test bench for an electric valve actuator includes an operating platform with an integrated controller. The controller includes, but is not limited to, a PCB control motherboard and a microcontroller. A control panel is fixedly connected to the operating platform, comprising an air switch, an emergency stop switch, and a power switch. A control interface is installed on the operating platform. A protective door is hinged to the operating platform. Support legs are fixedly connected to the lower surface of the operating platform. A changing device for adjusting the workpiece position is provided on the operating platform. The changing device includes a base positioned above the operating platform, and a connector insertion / removal device is mounted on the base. The connector insertion / removal device includes an assembly frame fixed to the base, and a support plate is slidably connected within the assembly frame. A spring is fixedly connected between the assembly frame and the support plate. The spring supports the position of the support plate, ensuring that it remains in the designated position when not under stress. A locking component is provided at the end of the support plate away from the assembly frame. The locking component clamps the cable connector of the workpiece, thereby restricting the cable connector to a designated position. A cylinder is fixedly connected to the operating table. A pressure plate is fixedly connected to the piston rod of the cylinder. A load-bearing frame adapted to the pressure plate is fixedly connected to the support plate. Through the cooperation of the cylinder, pressure plate, and load-bearing frame, the locking component can be moved to the top of the control interface. This allows the workpiece's cable connector to be inserted into the control interface, thus completing the electrical connection between the workpiece and the operating table.

[0007] As a further optimization of the present invention, the locking assembly includes a sleeve fixed to a support plate. A guide cavity is formed on the lower surface of the sleeve, and a connecting post is movably connected within the guide cavity. A spring is fixedly connected between the connecting post and the guide cavity. The spring can constrain the position of the connecting post, ensuring the stability of the connecting post in a non-stressed state. A sleeve is fixedly connected to the end of the connecting post away from the sleeve. A storage cavity is formed on the sleeve, and a buckle for limiting the position of the workpiece cable connector is slidably connected within the storage cavity. A U-shaped frame is fixedly connected within the storage cavity, and a spring is fixedly connected between the U-shaped frame and the buckle. The position of the buckle can be constrained by the cooperation of the spring and the U-shaped frame. A sliding sleeve is slidably connected to the surface of the sleeve, and a connecting post is fixedly connected within the sliding sleeve. An oblique hole is formed on the buckle, and the connecting post is slidably connected to the inner wall of the oblique hole. The sliding sleeve can move the buckle in cooperation with the connecting post and the oblique hole, making it convenient for the operator to remove the workpiece cable connector from the sleeve during subsequent work.

[0008] As a further optimization of the present invention, both the ferrule and the sleeve have openings on their surfaces. The connecting post is arranged in three sections with the diameter decreasing from top to bottom. When the middle section of the connecting post moves away from the through hole of the guide cavity, the connecting post loses the restriction of its middle section and the position of the through hole of the guide cavity. Then the connecting post can move horizontally in the guide cavity, so that the sleeve installed below it can float when pushing the cable connector of the workpiece. The sliding sleeve has a through groove, and the buckle is slidably connected to the through groove. The end of the buckle near the ferrule is sleeved on the U-shaped frame, and the end of the buckle away from the ferrule passes through the sliding sleeve.

[0009] As a further optimization of the present invention, the switching device includes a fixed frame fixed inside the operating table, a motor serving as a power source is fixedly connected to the fixed frame, and a base is fixedly connected to the output end of the motor. The motor can drive the base to rotate around its axis, thereby switching the positions of the workpieces placed at both ends of the base. Clamping components for clamping the workpieces are installed at both ends of the base. A guide component is provided between the operating table and the base, and the guide component is used to support the base.

[0010] As a further optimization of the present invention, the clamping assembly includes a support frame fixed on a base, a rotating shaft rotatably connected within the support frame, and a clamping plate fixedly connected to the rotating shaft to perform the clamping function of the clamping assembly. A groove is formed on one side of the clamping plate near the rotating shaft, and multiple equidistant gear teeth are fixedly connected within the groove. A rubber block is fixedly connected to the clamping plate; the rubber block increases the friction between the clamping plate and the workpiece, thereby improving the clamping stability of the workpiece. An installation cavity is formed on the upper surface of the base, and a bearing shell for supporting the workpiece is slidably connected within the installation cavity. A spring is fixedly connected between the bearing shell and the installation cavity; the spring supports the position of the bearing shell in a non-loaded state, ensuring that the bearing shell remains in a convex state in a non-loaded state. A rack adapted to the gear teeth is fixedly connected to the side of the bearing shell near the clamping plate.

[0011] As a further optimization of the present invention, the guiding component includes an annular guide rail fixed to the upper surface of the operating table, and a fixing plate fixedly connected to the lower surface of the base. The fixing plate is slidably connected to the annular guide rail. Through the cooperation between the annular guide rail and the fixing plate, the load-bearing end of the base can be supported, thereby reducing the load on the motor output end. A limiting shaft is fixedly connected to the fixing plate, and a guide wheel is rotatably connected to the limiting shaft. The cooperation between the fixing plate and the limiting shaft allows the guide wheel to move with the base. The guide wheel rolls in cooperation with the guide surface of the annular guide rail.

[0012] As a further optimization of the present invention, both ends of the base are semi-circular, and the number of clamping plates is three. The three clamping plates are arranged in a circumferential array with reference to the center of the semi-circle at the end of the base. The arrangement of the three clamping plates can further improve the clamping effect on the workpiece. The clamping plates are arc-shaped at one end of the rotating shaft. The rack meshes with the gear teeth. Through the cooperation of the rack and gear teeth, when the bearing shell moves in the vertical direction under the weight of the workpiece, it can drive the clamping plates to rotate, thereby changing the clamping plates from the unfolded state to the closed state to clamp the workpiece.

[0013] As a further optimization of the present invention, a storage device is provided on the base. The storage device includes an outer frame fixed to the upper surface of the base, a movable frame slidably connected inside the outer frame, a limiting ring fixedly connected inside the movable frame, and a storage wheel rotatably connected to the limiting ring. The limiting ring can constrain the position of the storage wheel and determine the rotation center of the storage wheel, so that the storage wheel rotates around a specified axis.

[0014] As a further optimization of the present invention, guide holes are provided on both sides of the outer frame, and protrusions are fixedly connected to both sides of the movable frame. The protrusions are slidably connected to the inner wall of the guide holes. The cooperation between the protrusions and the guide holes can limit the maximum travel of the movable frame, so that the movable frame always moves within the range of the outer frame. A U-shaped groove is provided on the storage wheel. The U-shaped groove makes it convenient for the operator to put other cables of the workpiece into the storage wheel.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. Due to the coordinated switching device and connector plugging / unplugging device on the test bench, the equipment can simultaneously complete the workpiece clamping and unloading at non-testing stations while testing the workpiece using the dual-station design of the switching device, without interrupting the electrical testing at the testing station or the continuous acquisition of electrical parameters. At the same time, when the switching device moves the workpiece to the testing station or moves it out of the testing station after testing, the equipment can automatically perform the plugging / unplugging operation of the workpiece connector. This not only greatly improves the batch testing efficiency of electrical aging tests, but also ensures the continuity and accuracy of electrical parameter acquisition. It effectively solves the problem that repeated shutdowns and power outages can cause the power supply and signal acquisition reference parameters of the test circuit to drift, further reducing the accuracy and reliability of electrical aging test data.

[0017] 2. Since the switching device is also equipped with a storage device, the operator can store the excess cable of the workpiece to be inspected, thereby storing the excess cable in the designated space and avoiding the excess cable from interfering with the rotation of the switching device. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the connection structure between the base and the assembly frame of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the switching device of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the clamping component of the present invention;

[0022] Figure 5 This is a schematic diagram of the connection structure between the annular guide rail and the fixing plate of the present invention;

[0023] Figure 6 This is a bottom view of the connector plugging / unplugging device of the present invention;

[0024] Figure 7 This is a schematic diagram of the connection structure between the buckle and the connecting column of the present invention;

[0025] Figure 8 This is a schematic diagram of the connection structure between the spring, the U-shaped frame, and the buckle frame of the present invention;

[0026] Figure 9 This is a schematic diagram of the storage device of the present invention.

[0027] In the diagram: 1. Operating console; 2. Control panel; 3. Control interface; 4. Protective door; 5. Support leg; 6. Changing device; 61. Fixing frame; 62. Motor; 63. Base; 64. Clamping assembly; 641. Support frame; 642. Rotating shaft; 643. Clamping plate; 644. Rubber block; 645. Mounting cavity; 646. Bearing shell; 647. Spring 1; 648. Rack; 65. Guide assembly; 651. Circular guide rail; 652. Fixing plate; 653. Limiting shaft; 654. Guide wheel; 7 71. Connector insertion / removal device; 72. Assembly frame; 73. Support plate; 74. Spring II; 75. Locking assembly; 76. Sleeve; 77. Connecting post; 78. Spring III; 79. Sleeve; 70. Storage cavity; 71. Buckle; 72. U-shaped frame; 73. Spring; 74. Sliding sleeve; 75. Connecting post; 76. Cylinder; 77. Pressure plate; 88. Load-bearing frame; 89. Storage device; 80. Outer frame; 81. Movable frame; 82. Protrusion; 83. Limiting ring; 84. Storage wheel. Detailed Implementation

[0028] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0029] Example: Please refer to Figures 1-9 An aging test bench for an electric valve actuator includes an operating platform 1, which integrates a controller, including but not limited to a PCB control motherboard, a microcontroller, and other control units. A control panel 2 is fixedly connected to the operating platform 1, which consists of an air switch, an emergency stop switch, and a power switch. A control interface 3 for connecting the control line of the workpiece (electric valve actuator) is installed on the operating platform 1. A protective door 4 is hinged to the operating platform 1. A support leg 5 is fixedly connected to the lower surface of the operating platform 1. An adjustment device 6 for changing the position of the workpiece is provided on the operating platform 1. The adjustment device 6 includes a base 63 set above the operating platform 1. A connector insertion and removal device 7 for automatically inserting and removing the workpiece control line connector is provided on the base 63.

[0030] Please see Figure 2 and Figure 6 The connector insertion / removal device 7 includes an assembly frame 71 fixed on the base 63. A support plate 72 is slidably connected inside the assembly frame 71. A second spring 73 is fixedly connected between the assembly frame 71 and the support plate 72. The second spring 73 can support the position of the support plate 72, ensuring that the support plate 72 always remains in the designated position when not under force. A locking component 74 is provided at the end of the support plate 72 away from the assembly frame 71. The locking component 74 can clamp the cable connector of the workpiece, thereby restricting the cable connector of the workpiece to the designated position. A cylinder 75 is fixedly connected to the operating table 1. A pressure plate 76 is fixedly connected to the piston rod of the cylinder 75. A load frame 77 adapted to the pressure plate 76 is fixedly connected to the support plate 72. Through the cooperation of the cylinder 75, the pressure plate 76 and the load frame 77, the locking component 74, which moves to the top of the control interface 3, can be driven to insert the cable connector of the workpiece into the control interface 3, so as to complete the electrical connection between the workpiece and the controller.

[0031] Please see Figure 6 , Figure 7 and Figure 8The locking assembly 74 includes a retainer 741 fixed to the support plate 72. A guide cavity is formed on the lower surface of the retainer 741, and a connecting post 742 is movably connected within the guide cavity. A spring 743 is fixedly connected between the connecting post 742 and the guide cavity. The spring 743 can constrain the position of the connecting post 742, ensuring the stability of the connecting post 742 in a non-stressed state. A sleeve 744 is fixedly connected to the end of the connecting post 742 facing away from the retainer 741. A receiving cavity 745 is formed on the sleeve 744, and a latch 746 for limiting the position of the workpiece cable connector is slidably connected within the receiving cavity 745. A U-shaped frame 747 is fixedly connected inside the sleeve 744. A spring 748 is fixedly connected between the U-shaped frame 747 and the buckle 746. The position of the buckle 746 can be constrained by the cooperation of the spring 748 and the U-shaped frame 747. A sliding sleeve 749 is slidably connected to the surface of the sleeve 744. A connecting post 7410 is fixedly connected inside the sliding sleeve 749. An oblique hole is opened on the buckle 746. The connecting post 7410 is slidably connected to the inner wall of the oblique hole. The sliding sleeve 749 can move the buckle 746 in cooperation with the connecting post 7410 and the oblique hole, so that the operator can remove the cable connector of the workpiece from the sleeve 744 in subsequent work.

[0032] Please see Figure 7 and Figure 8 Both the ferrule 741 and the sleeve 744 have openings on their surfaces. The connecting post 742 is arranged in three sections, with the diameter decreasing from top to bottom. When the middle section of the connecting post 742 moves away from the through hole of the guide cavity, the smallest diameter post at the bottom of the connecting post 742 moves into the through hole. At the same time, the connecting post 742 is no longer restricted by the position of its middle section and the through hole of the guide cavity. The connecting post 742 can then float in the guide cavity, allowing the sleeve 744 installed below it to float synchronously when pushing the cable connector of the workpiece. The sliding sleeve 749 has a through groove, and the buckle 746 is slidably connected to the through groove. The end of the buckle 746 near the ferrule 741 is fitted onto the U-shaped frame 747, and the end of the buckle 746 away from the ferrule 741 passes through the sliding sleeve 749.

[0033] Please see Figure 3 and Figure 4 The switching device 6 includes a fixed frame 61 fixed inside the operating table 1. A motor 62, which serves as a power source, is fixedly connected to the fixed frame 61. A base 63 is fixedly connected to the output end of the motor 62. The motor 62 can drive the base 63 to rotate around its axis, thereby switching the positions of the workpieces placed at both ends of the base 63. Clamping components 64 for clamping the workpieces are installed at both ends of the base 63. A guide component 65 is provided between the operating table 1 and the base 63. The guide component 65 is used to support the base 63.

[0034] Please see Figure 3 and Figure 4The clamping assembly 64 includes a support frame 641 fixed on a base 63. A rotating shaft 642 is rotatably connected within the support frame 641. A clamping plate 643, which performs the clamping function of the clamping assembly 64, is fixedly connected to the rotating shaft 642. A groove is formed on one side of the clamping plate 643, and multiple equidistant gear teeth are fixedly connected within the groove. A rubber block 644 is fixedly connected to the clamping plate 643. The rubber block 644 increases the friction between the clamping plate 643 and the workpiece, thereby improving the clamping effect. To ensure the clamping stability of the workpiece, the upper surface of the base 63 is provided with a mounting cavity 645. A bearing shell 646 for supporting the workpiece is slidably connected in the mounting cavity 645. A spring 647 is fixedly connected between the bearing shell 646 and the mounting cavity 645. The spring 647 can support the position of the bearing shell 646 in the non-loaded state, ensuring that the bearing shell 646 always remains in a convex state in the non-loaded state. A rack 648 with matching gear teeth is fixedly connected to the side of the bearing shell 646 near the clamping plate 643.

[0035] Please see Figure 1 and Figure 5 The guide assembly 65 includes an annular guide rail 651 fixed to the upper surface of the operating table 1. A fixing plate 652 is fixedly connected to the lower surface of the base 63. The fixing plate 652 is slidably connected to the annular guide rail 651. Through the cooperation between the annular guide rail 651 and the fixing plate 652, the load-bearing end of the base 63 can be supported, thereby reducing the load on the output end of the motor 62. A limit shaft 653 is fixedly connected to the fixing plate 652. A guide wheel 654 is rotatably connected to the limit shaft 653. The cooperation between the fixing plate 652 and the limit shaft 653 allows the guide wheel 654 to move with the base 63. The guide wheel 654 rolls with the guide surface of the annular guide rail 651.

[0036] Please see Figure 3 and Figure 4 The base 63 has two semi-circular ends, and there are three clamping plates 643. The three clamping plates 643 are arranged in a circular array with reference to the center of the semi-circle at the end of the base 63. The arrangement of the three clamping plates 643 can further improve the clamping effect on the workpiece. The clamping plates 643 are located at one end of the rotating shaft 642 and are arc-shaped. The rack 648 meshes with the gear teeth. Through the cooperation between the rack 648 and the gear teeth, when the bearing shell 646 moves in the vertical direction under the action of the workpiece weight, it can drive the clamping plates 643 to rotate, thereby changing the clamping plates 643 from the unfolded state to the closed state to clamp the workpiece.

[0037] Please see Figure 2 and Figure 9A storage device 8 is provided on the base 63. The storage device 8 includes an outer frame 81 fixed to the upper surface of the base 63. A movable frame 82 is slidably connected inside the outer frame 81. A limit ring 84 is fixedly connected inside the movable frame 82. A storage wheel 85 is rotatably connected to the limit ring 84. The limit ring 84 can constrain the position of the storage wheel 85 and determine the rotation center of the storage wheel 85, so that the storage wheel 85 rotates around a specified axis.

[0038] Please see Figure 9 Guide holes are provided on both sides of the outer frame 81, and protrusions 83 are fixedly connected to both sides of the movable frame 82. The protrusions 83 are slidably connected to the inner wall of the guide holes. The cooperation between the protrusions 83 and the guide holes can limit the maximum travel of the movable frame 82, so that the movable frame 82 always moves within the range of the outer frame 81. A U-shaped groove is provided on the storage wheel 85. The U-shaped groove makes it convenient for the operator to put other cables of the workpiece into the storage wheel 85.

[0039] It should be noted that, in use, the aging test bench for this type of valve electric actuator is used by placing the workpiece on the bearing shell 646 of the loading station outside the base 63; relying on the weight of the workpiece itself, the bearing shell 646 is driven to sink vertically along the mounting cavity 645, compressing the spring 647 and simultaneously driving the rack 648 to move down synchronously; the rack 648 meshes with the gear teeth at the end of the clamping plate 643, driving the clamping plate 643 to rotate synchronously around the rotating shaft 642 and close, and the rubber block 644 at the end of the clamping plate 643 simultaneously presses against the outer wall of the workpiece, completing the automatic centering and clamping of the workpiece;

[0040] After the workpiece is clamped, the lifting and storing wheel 85 drives the movable frame 82 to slide upward along the outer frame 81. The protrusions 83 on both sides of the movable frame 82 slide and limit their movement along the guide holes. When the protrusions 83 move to the top of the guide holes, the movable frame 82 fully unfolds, inserting the non-test redundant cable of the workpiece into the U-shaped groove of the storing wheel 85. Rotating the storing wheel 85 will neatly wind and store the redundant cable. After winding, push the storing wheel 85 to drive the movable frame 82 back to the outer frame 81.

[0041] After the redundant cables of the workpiece are stored, place the control cable connector of the workpiece under the sleeve 744, and comb the cable into the side opening of the sleeve 741 and the sleeve 744; push the connector upward to let it enter the inner cavity of the sleeve 744, and the connector squeezes the buckle 746 to slide outward to compress the spring 748; when the connector is fully entered into the sleeve 744, the spring 748 rebounds and pushes the buckle 746 to reset, automatically locking the stepped part of the connector, completing the quick locking of the connector;

[0042] After the loading preparation is completed, the motor 62 is started by controlling the control panel 2, which drives the base 63 to rotate 180° along the annular guide rail 651, automatically transferring the workpiece to be tested from the loading station to the testing station. During the rotation of the base 63, the annular guide rail 651 provides full circumferential support to the base 63 through the fixed plate 652 and the guide wheel 654. When the workpiece is in place, the load frame 77 moves to the pressure plate 76. The cylinder 75 drives the pressure plate 76 to press down, and the load frame 77 pushes the support plate 72 to compress the spring 73 and feed it downward, driving the locked cable connector to move towards the control interface 3. During the docking process, the three-section structure of the connecting column 742 can realize the floating self-adaptive alignment of the connector, and finally the control line connector is accurately inserted into the control interface 3 of the operating table 1, completing the automatic connection of the test circuit.

[0043] After connection, the equipment automatically starts the aging test program and completes all tests such as switch cycle aging, load durability test, and electrical performance aging according to preset parameters. It continuously collects and records the core performance parameters of the workpiece, such as working current, voltage, and insulation resistance. During the test, the operator can simultaneously prepare the next workpiece to be tested at the idle loading station on the outside.

[0044] After the current workpiece test is completed, the cylinder 75 drives the pressure plate 76 to move upward and reset, the spring 73 rebounds and drives the support plate 72 and the locking component 74 to move upward synchronously, automatically pulling the cable connector out of the control interface 3; the motor 62 starts again and drives the base 63 to rotate 180°, completing the station exchange between the workpiece to be tested and the workpiece that has been tested. The new workpiece to be tested enters the test station and automatically docks to start the test, while the workpiece that has been tested is moved to the loading station.

[0045] After the workpiece is in place, slide the sliding sleeve 749 downwards. The sliding sleeve 749 drives the buckle 746 to slide outwards through the transmission between the connecting column 7410 and the inclined hole, compressing the spring 748 and releasing the locking of the connector. The cable connector can then be taken out. Rotate the storage wheel 85 in the opposite direction to release the redundant cable, and lift the workpiece upwards to complete the unloading. The bearing shell 646 automatically resets under the action of the spring 647, and the clamping plate 643 opens synchronously, waiting for the next loading.

[0046] Because the test bench is equipped with a matching switching device 6 and a connector insertion / removal device 7, the equipment can simultaneously complete the workpiece clamping and unloading at non-testing stations while testing the workpiece using the dual-station design of the switching device 6, without interrupting the electrical testing at the testing station or the continuous acquisition of electrical parameters. At the same time, when the switching device 6 moves the workpiece to the testing station or moves it out of the testing station after testing, the equipment can automatically perform the insertion / removal operation of the workpiece connector through the connector insertion plate device 7. This not only greatly improves the batch testing efficiency of electrical aging tests, but also ensures the continuity and accuracy of electrical parameter acquisition. It effectively solves the problem that repeated shutdowns and power outages can cause the power supply and signal acquisition reference parameters of the test circuit to drift, further reducing the accuracy and reliability of electrical aging test data.

[0047] Among them, the control panel 1, the controller integrated in the control panel 1, the control panel 2, the control interface 3, the motor 62, and the cylinder 75 are all existing technologies, and their working and control principles will not be elaborated here. For the connection parts between the parts, the connection methods such as welding, bolt fixing, and interference fit can be selected according to the requirements of the connection position of the parts. In addition, for parts in different positions, the materials suitable for their working environment can be selected according to the working conditions and requirements.

[0048] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. An aging test bench for an electric valve actuator, comprising an operating table (1), characterized in that: A control panel (2) is fixedly connected to the operating table (1). A control interface (3) is installed on the operating table (1). A protective door (4) is hinged to the operating table (1). A support leg (5) is fixedly connected to the lower surface of the operating table (1). An exchange device (6) is provided on the operating table (1). The exchange device (6) includes a base (63) set above the operating table (1). A connector plugging and unplugging device (7) is provided on the base (63). The connector plugging and unplugging device (7) includes components fixed to the base (63). 3) The assembly frame (71) is slidably connected to the assembly frame (71), and a spring (73) is fixedly connected between the assembly frame (71) and the support plate (72). A locking component (74) is provided at one end of the support plate (72) away from the assembly frame (71). A cylinder (75) is fixedly connected to the operating table (1), and a pressure plate (76) is fixedly connected to the piston rod of the cylinder (75). A load frame (77) adapted to the pressure plate (76) is fixedly connected to the support plate (72).

2. The aging test bench for a valve electric actuator according to claim 1, characterized in that: The locking assembly (74) includes a sleeve (741) fixed on a support plate (72). A guide cavity is formed on the lower surface of the sleeve (741), and a connecting post (742) is movably connected inside the guide cavity. A spring (743) is fixedly connected between the connecting post (742) and the guide cavity. A sleeve (744) is fixedly connected to one end of the connecting post (742) away from the sleeve (741). A storage cavity (745) is formed on the sleeve (744). 45) A buckle (746) is slidably connected inside the storage cavity (745), a U-shaped frame (747) is fixedly connected inside the storage cavity (745), a spring (748) is fixedly connected between the U-shaped frame (747) and the buckle (746), a sliding sleeve (749) is slidably connected to the surface of the sleeve (744), a connecting post (7410) is fixedly connected inside the sliding sleeve (749), and an oblique hole is opened on the buckle (746), and the connecting post (7410) is slidably connected to the inner wall of the oblique hole.

3. The aging test bench for a valve electric actuator according to claim 2, characterized in that: Both the ferrule (741) and the sleeve (744) have openings on their surfaces. The connecting post (742) is arranged in three sections with the diameter decreasing from top to bottom. The sliding sleeve (749) has a through groove. The buckle (746) is slidably connected to the through groove. One end of the buckle (746) near the ferrule (741) is fitted onto the U-shaped frame (747). The end of the buckle (746) away from the ferrule (741) passes through the sliding sleeve (749).

4. The aging test bench for a valve electric actuator according to claim 1, characterized in that: The switching device (6) includes a fixed frame (61) fixed inside the operating table (1), a motor (62) fixedly connected to the fixed frame (61), a base (63) fixedly connected to the output end of the motor (62), a clamping assembly (64) for clamping the workpiece is installed at both ends of the base (63), and a guide assembly (65) for supporting the base (63) is provided between the operating table (1) and the base (63).

5. The aging test bench for a valve electric actuator according to claim 4, characterized in that: The clamping assembly (64) includes a support frame (641) fixed on a base (63). A rotating shaft (642) is rotatably connected inside the support frame (641). A clamping plate (643) is fixedly connected to the rotating shaft (642). A groove is provided on one side of the clamping plate (643) located on the rotating shaft (642). A gear tooth is fixedly connected inside the groove. A rubber block (644) is fixedly connected to the clamping plate (643). An installation cavity (645) is provided on the upper surface of the base (63). A bearing shell (646) is slidably connected inside the installation cavity (645). A spring (647) is fixedly connected between the bearing shell (646) and the installation cavity (645). A rack (648) adapted to the gear tooth is fixedly connected to the side of the bearing shell (646) near the clamping plate (643).

6. The aging test bench for a valve electric actuator according to claim 5, characterized in that: The guide assembly (65) includes an annular guide rail (651) fixed on the upper surface of the operating table (1). A fixing plate (652) is fixedly connected to the lower surface of the base (63). The fixing plate (652) is slidably connected to the annular guide rail (651). A limiting shaft (653) is fixedly connected to the fixing plate (652). A guide wheel (654) is rotatably connected to the limiting shaft (653). The guide wheel (654) rolls with the guide surface of the annular guide rail (651).

7. The aging test bench for a valve electric actuator according to claim 5, characterized in that: Both ends of the base (63) are semi-circular. There are three clamps (643). The three clamps (643) are arranged in a circular array with reference to the center of the semi-circle at the end of the base (63). The clamps (643) are located at one end of the rotating shaft (642) in an arc shape. The rack (648) meshes with the gear teeth.

8. The aging test bench for a valve electric actuator according to claim 1, characterized in that: The base (63) is provided with a storage device (8), the storage device (8) includes an outer frame (81) fixed on the upper surface of the base (63), a movable frame (82) is slidably connected inside the outer frame (81), a limit ring (84) is fixedly connected inside the movable frame (82), and a storage wheel (85) is rotatably connected to the limit ring (84).

9. An aging test bench for a valve electric actuator according to claim 8, characterized in that: The outer frame (81) has guide holes on both sides, and the movable frame (82) has protrusions (83) fixedly connected to both sides. The protrusions (83) are slidably connected to the inner wall of the guide holes, and the storage wheel (85) has a U-shaped groove.

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