Electromagnetic valve fatigue test device and working method thereof

Abstract

The invention discloses an electromagnetic valve fatigue test device and a working method thereof, and relates to the technical field of electromagnetic valve testing, the electromagnetic valve fatigue test device comprises a test table, a test groove is embedded in the bottom of the test table, and the test groove is used for installing an electromagnetic valve required by testing; a baffle is hinged to the top of the testing groove, through holes are formed in the side wall and the bottom of the testing groove correspondingly, and the through holes are used for allowing a pipeline connected with the electromagnetic valve to penetrate through so that external liquid can flow into the electromagnetic valve through the pipeline; the limiting frame is pushed to move through the electric push rod, so that the limiting frame drives the permanent magnet rod and the coil to move together, left-right movement of the magnetic field is achieved, when the magnetic field moves left and right, the magnetic field intensity is different at different positions, and the change can influence the magnetization state of a magnetic material in the electromagnetic valve. Therefore, the response speed and accuracy of the electromagnetic valve under different magnetic field intensities can be tested.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic valve testing, in particular to an electromagnetic valve fatigue testing device and a working method thereof. Background Art

[0002] The patent with publication (announcement) number CN210513682U discloses a solenoid valve durability testing device, including a support seat and an electric lifting column, a connecting piece is fixed at the center position of the upper end surface of the support seat, and an anti-slip sheet is bonded to the inner surface of the connecting piece, a support block is fixed to the upper end of the electric lifting column, and a resistance piece is fixed to the front end surface of the support block, and the support block is connected to the combination block through an internal rotating shaft, and a test box is installed on the upper end of the combination block.

[0003] The solenoid valve testing device in the prior art can usually only provide fixed magnetic field conditions and cannot dynamically adjust the range, intensity and position of the magnetic field. In actual applications, the solenoid valve may be affected by the dynamic magnetic field from surrounding equipment or other electromagnetic sources. Therefore, the traditional testing device cannot accurately simulate the magnetic field conditions of the solenoid valve in the actual working environment, nor can it comprehensively evaluate the performance of the solenoid valve under different magnetic field conditions. Summary of the invention

[0004] Therefore, in order to solve the above-mentioned deficiencies, the present invention provides a solenoid valve fatigue testing device and a working method thereof.

[0005] The present invention is implemented as follows: a solenoid valve fatigue test device and a working method thereof are constructed, the device comprising a test table, a test slot is embedded in the bottom of the test table, the test slot is used to install the solenoid valve required for the test; a baffle is hinged on the top of the test slot, and a through hole is provided on the side wall and the bottom of the test slot, the through hole is used to pass through a pipe connected to the solenoid valve so that external liquid flows into the solenoid valve through the pipe; a test assembly is provided in the test slot; a first slide slot, a matching plate, a sliding block, a permanent magnet rod and a second slide slot in the test assembly are provided in multiple groups and the same number, and form an adjustment assembly, the permanent magnet rods on the multiple groups of adjustment assemblies form a circle with adjustable diameter, the outer side walls of the multiple groups of permanent magnet rods are wound with coils, and the two ends of the coils are respectively connected to the second reel and the first reel; the second reel and the first reel are used to cooperate with the permanent magnet rod to adjust the diameter of the coil wound around the outer side wall.

[0006] Preferably, the test assembly includes a linear drive, a linear drive is fixedly connected to the bottom of the test slot, a drive motor is bolted to the side wall of the test slot, and the output shaft of the drive motor is fixedly connected to the gear ring and the center of the circle.

[0007] Preferably, an electric push rod is fixedly connected to the side wall of the test slot, the output end of the electric push rod is fixedly connected to the limiting frame, the side wall of the limiting frame is fixedly connected to a limiting plate, the side wall of the limiting plate is embedded with a first sliding groove, a sliding block is slidably connected to the side wall of the matching plate in the first sliding groove, and the side wall of the matching plate is fixedly connected to the sliding block.

[0008] Preferably, the other end of the matching plate away from the sliding block is fixedly connected to the permanent magnet rod, the limiting plate is rotatably connected to the ring, the inner wall of the ring is embedded with a second slide groove, the permanent magnet rod slides through the second slide groove and extends outward, and the outer peripheral wall of the ring is fixedly connected with teeth.

[0009] Preferably, the moving end of the linear drive is fixedly connected to the first retractor, and a second retractor is fixedly connected to the side wall of the test slot close to one end of the limiting frame.

[0010] Preferably, the second reel has the same structure as the first reel; the first reel includes a base, a servo motor and a reeling roller, the base is fixedly connected to the moving end of the linear drive, the servo motor is bolted to the side wall of the base, and the output shaft of the servo motor is fixedly connected to the center of the reeling roller.

[0011] Preferably, the outer side walls of the multiple groups of permanent magnet rods are sleeved with elastic rings, which are fixedly connected to a base on the first retractor, and the base is used to drive the elastic rings to move.

[0012] A working method of a solenoid valve fatigue testing device comprises the following steps; S1: Install the solenoid valve in the test tank and connect the two ends of the solenoid valve to external pipes to simulate the fluid path of the solenoid valve in actual work; cover the baffle to ensure the sealing and safety of the test environment, control the solenoid valve to open and close, and energize the coil to generate a magnetic field; the magnetic field covers the solenoid valve to simulate the working state of the solenoid valve in a magnetic field environment; S2: The electric push rod is used to push the limit frame to move, so that the limit frame drives the permanent magnet rod and the coil to move together, thereby realizing the movement of the magnetic field; the drive motor is turned on to drive the gear ring to rotate; the gear ring is engaged with the tooth pattern to drive the ring to rotate, and the ring drives multiple groups of permanent magnet rods to move through the second slide groove; the movement of the permanent magnet rod will adjust the diameter of the coil winding; S3: When the permanent magnet rod expands outward, the first retractor and the second retractor release the coil, and the permanent magnet rod stretches the coil to increase the diameter of the winding; this will increase the extension range of the magnetic field in space, provide a longer current path, and thus enhance the magnetic field; when the permanent magnet rod retracts inward, the first retractor and the second retractor retract the coil to bring the coil closer to the side wall of the permanent magnet rod; this will reduce the diameter of the winding and the magnetic field range accordingly; S4: Control the linear drive to drive the first reel to move; the movement of the first reel will drive the elastic ring to slide on the multiple sets of permanent magnet rods; the sliding of the elastic ring will push the winding to shrink, making the length of the winding shorter; since the magnetic field strength is inversely proportional to the magnetic circuit length, the shortening of the winding length will lead to the enhancement of the magnetic field strength; by controlling the moving direction and speed of the linear drive, the change of the winding length can be accurately controlled, thereby achieving precise adjustment of the magnetic field strength.

[0013] Compared with the prior art, the present invention has the following beneficial effects: (1) Comprehensive and accurate testing of the solenoid valve is achieved by dynamically adjusting the magnetic field range, intensity and position.

[0014] (2) The electric push rod pushes the limit frame to move, so that the limit frame drives the permanent magnet rod and the coil to move together, thereby realizing the left and right movement of the magnetic field. When the magnetic field moves left and right, the magnetic field strength is different at different positions. This change will affect the magnetization state of the magnetic material inside the solenoid valve, and then affect the switching performance of the solenoid valve. The response speed and accuracy of the solenoid valve under different magnetic field strengths can be tested.

[0015] (3) The strength of the magnetic field is controlled by adjusting the diameter and length of the winding, avoiding dynamic adjustment of the magnetic field strength by controlling the current and avoiding the temperature increase inside the winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the structure of the test table of the present invention; Figure 3 The structure of the present invention is schematically shown in FIG. Figure 1 ; Figure 4 The structure of the present invention is schematically shown in FIG. Figure 2 ; Figure 5 It is a schematic diagram of the connection structure between the limiting plate and the circular ring of the present invention; Figure 6 The structure of the present invention is schematically shown in FIG. Figure 3 ; Figure 7 The structure of the present invention is schematically shown in FIG. Figure 4 ; Figure 8 It is a schematic diagram of the base connection relationship structure of the present invention.

[0017] Among them: test table-1, baffle-2, test slot-3, through hole-4, linear drive-5, drive motor-6, gear ring-7, electric push rod-8, limit frame-9, limit plate-10, first slide slot-11, matching plate-12, sliding block-13, permanent magnet rod-14, ring-15, second slide slot-16, tooth pattern-17, first reel-18, second reel-19, base-20, servo motor-21, reeling roller-22, elastic ring-23. DETAILED DESCRIPTION

[0018] The following will be combined with the attached Figure 1-Figure 8 The present invention is described in detail, and the technical solutions in the embodiments of the present invention are made clear. The complete description is obvious. The described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0021] See also Figures 1 to 8A solenoid valve fatigue test device and a working method thereof of the present invention include a test table 1, on which a controller is provided, the controller is connected to the solenoid valve to be tested, and the use status of the solenoid valve is detected by the controller. The controller is electrically connected to a linear drive 5, a drive motor 6, an electric push rod 8 and a servo motor 21. A test slot 3 is embedded in the bottom of the test table 1, and the test slot 3 is used to install the solenoid valve required for the test; a baffle 2 and a side wall of the test slot 3 are provided with a magnetic shielding agent coating; the magnetic shielding agent coating is used for magnetic field absorption: the magnetic material in the magnetic shielding agent coating can absorb magnetic field energy, thereby reducing the penetration of the magnetic field. When the magnetic field encounters the coating, its energy will be absorbed by the magnetic particles in the material and converted into other forms of energy such as heat energy, thereby weakening the intensity of the magnetic field.

[0022] Specifically, a baffle 2 is hinged on the top of the test slot 3, and a through hole 4 is provided on the side wall and the bottom of the test slot 3. The through hole 4 is used to pass through the pipe connected to the solenoid valve so that the external liquid can flow into the solenoid valve through the pipe; the solenoid valve is installed inside the test slot 3, and then the connecting pipes at the left and right ends of the solenoid valve are connected to the pipe, so that the pipes at the left and right ends convey the fluid into the solenoid valve and thereby test the actual use of the solenoid valve; the solenoid valve is installed into the test slot 3, and the two ends of the solenoid valve are connected to the external pipe to simulate the fluid passage of the solenoid valve in actual work; the baffle 2 is covered to ensure the sealing and safety of the test environment, the solenoid valve is controlled to be opened and closed, and the coil is energized at the same time to generate a magnetic field; the magnetic field covers the solenoid valve to simulate the working state of the solenoid valve in a magnetic field environment.

[0023] Specifically, a test assembly is provided in the test slot 3, a linear drive 5 is fixedly connected to the bottom of the test slot 3, a drive motor 6 is bolted to the side wall of the test slot 3, the output shaft of the drive motor 6 is fixedly connected to the gear ring 7 and the center of the circle, the drive motor 6 is used to drive the gear ring 7 to rotate, so that the gear ring 7 is meshed with the tooth pattern 17, the tooth pattern 17 drives the ring 15 to rotate, the ring 15 also drives multiple groups of second slide grooves 16 to rotate, the second slide grooves 16 apply thrust to drive multiple groups of permanent magnet rods 14 to move, the side wall of the test slot 3 is fixedly connected to an electric push rod 8, the output end of the electric push rod 8 is fixedly connected to the limit frame 9, the limit frame 9 The side wall is fixedly connected with a limiting plate 10, and the side wall of the limiting plate 10 is embedded with a first slide groove 11, and a sliding block 13 of the side wall of the matching plate 12 is slidably connected in the first slide groove 11, and the side wall of the matching plate 12 is fixedly connected with the sliding block 13; the other end of the matching plate 12 away from the sliding block 13 is fixedly connected to the permanent magnet rod 14; the first slide groove 11, the matching plate 12, the sliding block 13, the permanent magnet rod 14 and the second slide groove 16 are provided in multiple groups and the number is the same, and they form an adjustment component, the permanent magnet rods 14 on the multiple groups of adjustment components form a circle with adjustable diameter, and the outer side walls of the multiple groups of permanent magnet rods 14 are wound with coils , the two ends of the coil are connected to the second reel 19 and the first reel 18 respectively; the electric push rod 8 pushes the limit frame 9 to move, so that the limit frame 9 drives the permanent magnet rod 14 and the coil to move together, thereby realizing the left and right movement of the magnetic field. When the magnetic field moves left and right, the magnetic field strength is different at different positions. This change will affect the magnetization state of the magnetic material inside the solenoid valve, and then affect the switching performance of the solenoid valve. The response speed and accuracy of the solenoid valve under different magnetic field strengths can be tested; the drive motor 6 is turned on to drive the gear ring 7 to rotate; the gear ring 7 is engaged with the tooth pattern 17 to drive the ring 15 to rotate, and the ring 15 passes The second slide slot 16 drives the multiple groups of permanent magnet rods 14 to move; the movement of the permanent magnet rods 14 will adjust the diameter of the coil winding. When the permanent magnet rods 14 expand outward, the first retractor 18 and the second retractor 19 release the retraction of the coil, and the permanent magnet rods 14 stretch the coil to increase the diameter of the winding; this will cause the extension range of the magnetic field in space to increase, providing a longer current path, thereby enhancing the magnetic field; when the permanent magnet rods 14 retract, the first retractor 18 and the second retractor 19 retract the coil to make the coil close to the side wall of the permanent magnet rod 14; this will cause the diameter of the winding to become smaller, and the magnetic field range will be reduced accordingly.

[0024] Specifically, the limiting plate 10 is rotatably connected to the ring 15 , the inner wall of the ring 15 is embedded with a second slide groove 16 , the permanent magnet rod 14 slides through the second slide groove 16 to extend outward, and the outer peripheral wall of the ring 15 is fixedly connected with a tooth pattern 17 .

[0025] Specifically, the moving end of the linear drive 5 is fixedly connected to the first reel 18, and a second reel 19 is fixedly connected to the side wall of the test slot 3 near the limiting frame 9; the second reel 19 is fixedly connected to the side wall of the test slot 3, and the second reel 19 has the same structure as the first reel 18; the first reel 18 includes a base 20, a servo motor 21 and a reeling roller 22, the base 20 is fixedly connected to the moving end of the linear drive 5, the side wall of the base 20 is bolted with the servo motor 21, and the output shaft of the servo motor 21 is fixedly connected to the center of the reeling roller 22; the second reel 19 and the first reel 18 are used to cooperate with the permanent magnet rod 14 to adjust the outer wall winding The diameter of the coil; the linear drive 5 is controlled to drive the first reel 18 to move; the movement of the first reel 18 will drive the elastic ring 23 to slide on the multiple sets of permanent magnet rods 14; the sliding of the elastic ring 23 will push the winding to shrink, making the length of the winding shorter; since the magnetic field strength is inversely proportional to the magnetic path length, the shortening of the winding length will lead to the enhancement of the magnetic field strength; by controlling the moving direction and speed of the linear drive 5, the change of the winding length can be accurately controlled, thereby realizing the precise adjustment of the magnetic field strength; by real-time monitoring and recording of the working state, magnetic field strength, magnetic field range and other parameters of the solenoid valve, the performance of the solenoid valve under different magnetic field conditions can be comprehensively evaluated.

[0026] The above shows and describes the basic principle, main features and advantages of the present invention, and the standard parts used in the present invention can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0027] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A solenoid valve fatigue test device, comprising a test table (1), wherein a test slot (3) is embedded in the bottom of the test table (1), and the test slot (3) is used to install a solenoid valve required for the test; A baffle (2) is hingedly connected to the top of the test slot (3), and a through hole (4) is provided on the side wall and the bottom of the test slot (3). The through hole (4) is used to pass a pipe connected to the solenoid valve so that external liquid flows into the solenoid valve through the pipe. Features: A test assembly is provided in the test slot (3); The first slide groove (11), the matching plate (12), the sliding block (13), the permanent magnet rod (14) and the second slide groove (16) in the test component are provided in multiple groups and the number is the same, and they form an adjustment component, the permanent magnet rods (14) on the multiple groups of adjustment components form a circle with adjustable diameter, and the outer side walls of the multiple groups of permanent magnet rods (14) are wound with coils, and the two ends of the coils are respectively connected to the second reel (19) and the first reel (18); The second reel (19) and the first reel (18) are used to cooperate with the permanent magnet rod (14) to adjust the diameter of the coil wound around the outer wall.

2. The solenoid valve fatigue testing device according to claim 1, characterized in that: The test assembly comprises a linear drive (5), the bottom of the test slot (3) is fixedly connected to the linear drive (5), the side wall of the test slot (3) is bolted to a drive motor (6), and the output shaft of the drive motor (6) is fixedly connected to the gear ring (7) at the center of the circle.

3. The solenoid valve fatigue testing device according to claim 2, characterized in that: The side wall of the test slot (3) is fixedly connected to an electric push rod (8), the output end of the electric push rod (8) is fixedly connected to a limiting frame (9), the side wall of the limiting frame (9) is fixedly connected to a limiting plate (10), the side wall of the limiting plate (10) is embedded with a first sliding groove (11), the first sliding groove (11) is slidably connected to a sliding block (13) on the side wall of the matching plate (12), and the side wall of the matching plate (12) is fixedly connected to the sliding block (13).

4. The solenoid valve fatigue testing device according to claim 3, characterized in that: The other end of the matching plate (12) away from the sliding block (13) is fixedly connected to the permanent magnet rod (14), the limiting plate (10) is rotatably connected to the ring (15), the inner wall of the ring (15) is embedded with a second slide groove (16), the permanent magnet rod (14) slides through the second slide groove (16) and extends outward, and the outer peripheral wall of the ring (15) is fixedly connected with a tooth pattern (17).

5. The solenoid valve fatigue testing device according to claim 4, characterized in that: The moving end of the linear drive (5) is fixedly connected to the first retractor (18), and a second retractor (19) is fixedly connected to the side wall of the test slot (3) close to one end of the limiting frame (9).

6. The solenoid valve fatigue testing device according to claim 5, characterized in that: The second retractor (19) has the same structure as the first retractor (18); the first retractor (18) comprises a base (20), a servo motor (21) and a reel (22); the base (20) is fixedly connected to the moving end of the linear drive (5); the servo motor (21) is bolted to the side wall of the base (20); and the output shaft of the servo motor (21) is fixedly connected to the center of the reel (22).

7. The solenoid valve fatigue testing device according to claim 6, characterized in that: An elastic ring (23) is sleeved on the outer side wall of the plurality of groups of permanent magnet rods (14); the elastic ring (23) is fixedly connected to a base (20) on the first reel (18); and the base (20) is used to drive the elastic ring (23) to move.

8. A working method of a solenoid valve fatigue test device, using the solenoid valve fatigue test device according to claim 7, characterized in that: The steps include: S1: Install the solenoid valve into the test tank (3), and connect the two ends of the solenoid valve to external pipes to simulate the fluid path of the solenoid valve in actual operation; cover the baffle (2) to ensure the sealing and safety of the test environment, control the solenoid valve to open and close, and energize the coil at the same time to generate a magnetic field; the magnetic field covers the solenoid valve, simulating the working state of the solenoid valve in a magnetic field environment; S2: The limiting frame (9) is pushed to move by the electric push rod (8), so that the limiting frame (9) drives the permanent magnet rod (14) to move together with the coil, thereby realizing the movement of the magnetic field; the driving motor (6) is turned on to drive the ring gear (7) to rotate; the ring gear (7) is meshed with the tooth pattern (17), driving the ring (15) to rotate, and the ring (15) drives the multiple groups of permanent magnet rods (14) to move through the second slide groove (16); the movement of the permanent magnet rods (14) will adjust the diameter of the coil winding; S3: When the permanent magnet rod (14) expands outward, the first retractor (18) and the second retractor (19) release the retraction of the coil, and the permanent magnet rod (14) stretches the coil, so that the diameter of the winding increases; this will cause the extension range of the magnetic field in space to increase, providing a longer current path, thereby enhancing the magnetic field; when the permanent magnet rod (14) retracts inward, the first retractor (18) and the second retractor (19) retract the coil, so that the coil is close to the side wall of the permanent magnet rod (14); this will cause the diameter of the winding to decrease, and the magnetic field range will decrease accordingly; S4: Control the linear drive (5) to drive the first retractor (18) to move; the movement of the first retractor (18) drives the elastic ring (23) to slide on the plurality of permanent magnet rods (14); the sliding of the elastic ring (23) drives the winding to shrink, thereby shortening the length of the winding; since the magnetic field strength is inversely proportional to the magnetic circuit length, the shortening of the winding length will lead to the enhancement of the magnetic field strength; by controlling the moving direction and speed of the linear drive (5), the change of the winding length can be accurately controlled, thereby achieving accurate adjustment of the magnetic field strength.

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