Electro-hydraulic actuator testing machine and use method

Abstract

The invention discloses an electro-hydraulic actuator testing machine, belonging to the technical field of electro-hydraulic actuators. The electro-hydraulic actuator testing machine comprises an electro-hydraulic servo actuator testing machine body and a bottom plate arranged at the bottom of the electro-hydraulic servo actuator testing machine body, wherein a motor is arranged at the bottom of the electro-hydraulic servo actuator testing machine body; the electro-hydraulic actuator testing machine can rotate a rotating rod by a winding wheel when it is reversed, thereby driving a driving plate to rotate and contact the inclined surface of an inclined plate, so that the inclined plate pushes a sliding rod and a circular plate, so that the circular plate squeezes out gas in an air cylinder from an air blowing pipe to an air blowing plate, thereby blowing and cleaning metal debris in an upper clamp and a lower clamp, which helps to realize automatic cleaning of debris inside a clamp after the electro-hydraulic servo actuator testing machine body is inspected once, can realize automatic control, and does not require manual cleaning, thereby greatly improving the working efficiency of the electro-hydraulic servo actuator testing machine.

Description

Technical Field

[0001] The present invention relates to the technical field of electro-hydraulic actuators, and in particular to an electro-hydraulic actuator testing machine and a use method thereof. Background Art

[0002] The electro-hydraulic actuator is an important control and execution element in the fields of aerospace, military equipment and industrial automation. It is composed of a hydraulic cylinder and a servo valve. The servo valve is controlled to achieve high-precision position, speed and force control of the hydraulic cylinder piston. The performance and quality of the electro-hydraulic actuator directly affect the working performance of the entire system. The electro-hydraulic actuator test machine is widely used in the field of industrial automation. At present, the electro-hydraulic servo actuator needs to use the electro-hydraulic servo actuator test machine body to test the performance of the electro-hydraulic servo actuator. The electro-hydraulic servo actuator test machine body can be used to test the static and dynamic performance of the electro-hydraulic servo actuator, such as maximum thrust, maximum speed, frequency response, accuracy, etc. The electro-hydraulic servo actuator test machine body can also be used to test the reliability and durability of the electro-hydraulic servo actuator, and its life and stability can be evaluated through long-term continuous operation and repeated loading.

[0003] After searching, the Chinese patent publication number CN110987625 A discloses an ultra-quiet electro-hydraulic servo universal testing machine, which belongs to the field of mechanical testing equipment. It includes a main structure, a measuring system and an electro-hydraulic servo system. The main structure includes a base and a vertically arranged rectangular test frame vertically slidably connected to the base. The upper end of the test frame is fixedly connected to an upper clamp, and the base is fixedly connected to a hydraulic cylinder that drives the test frame to slide vertically. The base is connected to a movable crossbeam, and the movable crossbeam is located in the test frame. The movable crossbeam is fixedly connected to a lower clamp, and the upper clamp and the lower clamp face opposite directions. The measuring system includes a displacement sensor for detecting the distance between the test frame and the base, and the electro-hydraulic servo system provides hydraulic power for the hydraulic cylinder. The above patent has the following deficiencies: when the electro-hydraulic servo actuator test machine body detects some metal parts, it is necessary to clamp both ends of the parts before testing. However, some parts may have dust and other impurities on their surfaces, and metal parts may contain some rust. During the clamping test, some rust will inevitably remain inside the fixture or metal debris generated by the breakage of metal parts during the test may remain in the fixture. If not cleaned, it will affect the next inspection, resulting in inaccurate inspection results. In addition, the staff cannot be protected during the inspection, and the metal may break during the inspection, which can easily splash onto the staff, causing great harm to the staff. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that metal debris remaining in the fixture of the electro-hydraulic servo actuator testing machine body after the detection is completed cannot be automatically cleaned, and to propose an electro-hydraulic actuator testing machine and a method of use.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An electro-hydraulic actuator test machine, comprising an electro-hydraulic servo actuator test machine body and a bottom plate arranged at the bottom of the electro-hydraulic servo actuator test machine body, a motor is arranged at the bottom of the electro-hydraulic servo actuator test machine body, an upper clamp and a lower clamp are arranged on the surface of the electro-hydraulic servo actuator test machine body, a protective shell and an L-shaped support plate are arranged on the outside of the electro-hydraulic servo actuator test machine body, and further comprising: a mounting plate fixedly connected to the top of the L-shaped support plate, a gas cylinder is fixedly connected to the surface of the mounting plate, and one end of the gas cylinder is fixedly connected to the There are two fixedly connected air blowing pipes, the top of the air cylinder is fixedly connected with an air suction pipe, and the ends of the two air blowing pipes away from the air cylinder are fixedly connected with a blowing plate; a circular plate, a piston is connected to the inside of the air cylinder, one side surface of the circular plate is fixedly connected with a sliding rod, and the sliding rod is slidably connected to the air cylinder; an inclined plate, fixedly connected to one end of the sliding rod; a rotating rod, rotatably connected to the top of the mounting plate, and one end of the rotating rod is fixedly connected to a driving plate; a winding wheel is arranged on the rotating rod, and a wire rope is arranged between the winding wheel and the lower clamp.

[0007] Preferably, the bottom of the motor is fixedly connected to the bottom inner wall of the protective shell, the two side surfaces of the lower clamp are fixedly connected with sliding plates, the surface of the sliding plates is penetrated by threaded rods and is threadedly connected to the sliding plates, the two sides of the upper clamp are fixedly connected with fixed plates, the threaded rods penetrate the fixed plates and are rotatably connected to the fixed plates, the threaded rods are provided with two groups and the two groups of threaded rods are symmetrically arranged with the center line of the lower clamp as the symmetry axis, and the two threaded rods are transmission-connected to the motor by a first synchronous belt and a second synchronous belt.

[0008] Preferably, the bottom of the threaded rod is rotatably connected to the bottom inner wall of the protective shell, the threaded rod passes through the bottom plate and is rotatably connected to the bottom plate, the top surface of the bottom plate is fixedly connected with a column, the column passes through the lower clamp and is slidably connected to the lower clamp, the top of the column passes through the fixed plate and is fixedly connected to the fixed plate, the L-shaped support plate is fixedly connected to the bottom plate, and the inside of the blowing pipe and the suction pipe are fixedly installed with a one-way valve, and the two blowing plates are respectively aligned with the upper clamp and the lower clamp.

[0009] Preferably, the sliding rod passes through the air cylinder and is slidably connected to the air cylinder, a first spring is sleeved on the surface of the sliding rod close to the outside of the air cylinder, one end of the first spring is fixedly connected to the inclined plate, and the other end of the first spring is fixedly connected to the outer wall of the air cylinder, the driving plate is slidably connected to the inclined plate, a rectangular plate is fixedly connected to the surface of the mounting plate, the rotating rod passes through the rectangular plate and is rotatably connected to the rectangular plate, the wire rope is wound around a winding wheel, and the winding wheel passes through the rotating rod and is rotatably connected to the rotating rod.

[0010] Preferably, a pawl is hinged on the surface of a rectangular plate close to the body of the electro-hydraulic servo actuator testing machine, an elastic sheet is fixedly connected between the pawl and the rectangular plate, a first stopper is fixedly connected to the surface of the rectangular plate, a ratchet passes through the surface of the rotating rod and is fixedly connected to the rotating rod, a circular disk is fixedly connected to the side of the ratchet away from the rectangular plate, and the circular disk passes through the rotating rod and is fixedly connected to the rotating rod.

[0011] Preferably, a plurality of first strip plates are fixedly connected to the inner wall of the circular disk, a second strip plate is hingedly connected to the surface of the winding wheel, a torsion spring is fixedly connected between the second strip plate and the winding wheel, a second stopper is fixedly connected to the surface of the winding wheel, a tooth groove is provided on the surface of the winding wheel, a first rack plate is meshed at the bottom of the tooth groove of the winding wheel, and a first guide plate is fixedly connected to the bottom of the first rack plate.

[0012] Preferably, a slide plate is fixedly connected to the surface of the mounting plate, the first guide plate is slidably connected in the slide plate, guide rods are fixedly connected to the inner walls at both ends of the slide plate, the guide rods penetrate the first guide plate and are slidably connected to the first guide plate, a second spring is sleeved on the surface of the guide rod, one end of the second spring is fixedly connected to the first guide plate, and the other end of the second spring is fixedly connected to the inner wall of the slide plate.

[0013] Preferably, the side surface of the mounting plate is fixedly connected to a third strip plate, a driven rod passes through the surface of the third strip plate and is rotatably connected to the third strip plate, a third synchronous belt is transmission-connected between the driven rod and the rotating rod, and a gear is fixedly connected to one end of the driven rod away from the third strip plate, and a second rack plate is meshed on the left side surface of the gear.

[0014] Preferably, a second guide plate is fixedly connected to the left bottom surface of the second rack plate, a rectangular sliding frame is fixedly connected to the left inner wall of the protective shell, the second guide plate is slidably connected in the rectangular sliding frame, a transparent observation plate is fixedly connected to the surface of the protective shell, a horizontal plate is fixedly connected to the top surface of the transparent observation plate near the inside of the protective shell, the bottom surface of the horizontal plate is fixedly connected to a vertical rod, the surface of the vertical rod is sleeved with a third spring, a scraper is slidably connected to the inner wall of the protective shell near the bottom of the transparent observation plate, the scraper passes through the vertical rod and is slidably connected to the vertical rod, one end of the third spring is fixedly connected to the horizontal plate, and the other end of the third spring is fixedly connected to the scraper, the right top surface of the second rack plate is fixedly connected to a top plate, and a magnet collecting slot is fixedly connected to the inner wall of the protective shell.

[0015] A method for using an electro-hydraulic actuator testing machine is operated by the following steps:

[0016] S1. By starting various components on the body of the electro-hydraulic servo actuator test machine, the lower fixture is driven to rise, and the wire rope is pulled to drive the winding wheel to rotate. The winding wheel drives the second strip plate to rotate and contact the first strip plate. Under the action of the pawl limiting the ratchet, the second strip plate slides over the first strip plate through the compression torsion spring. At this time, the ratchet and the rotating rod will not be driven to rotate. At the same time, the tooth groove on the winding wheel meshes with the first rack plate to make the first rack plate slide to the right, and the second spring is compressed through the first guide plate, so that the second spring is in a compressed state;

[0017] S2. After the inspection of the electro-hydraulic servo actuator test machine body is completed, the lower fixture is lowered. During the descent process, the second spring has a reset force, which drives the first rack plate to slide to the left and reset, causing the winding wheel to start to rotate in the opposite direction. The winding wheel drives the second strip plate to reverse and contact the first strip plate, thereby driving the circular disk to rotate, causing the ratchet to reverse. The pawl will no longer limit the ratchet, thereby causing the rotating rod to rotate, driving the drive plate to rotate and contact the inclined surface of the inclined plate, causing the inclined plate to push the sliding rod, and then push the circular plate to make a piston movement in the air cylinder, thereby squeezing the gas in the air cylinder out of the blowing pipe, and then blowing it out from the blowing plate, blowing away the metal debris in the upper and lower fixtures.

[0018] Compared with the prior art, the present invention provides an electro-hydraulic actuator testing machine, which has the following beneficial effects:

[0019] 1. The electro-hydraulic actuator test machine can rotate the rotating rod when the winding wheel is reversed, driving the driving plate to rotate and contact the inclined surface of the inclined plate, so that the inclined plate pushes the sliding rod and the circular plate, and the circular plate squeezes out gas in the air cylinder from the blowing pipe to the blowing plate, thereby blowing and cleaning the metal debris in the upper fixture and the lower fixture, which is helpful to automatically clean the debris inside the fixture after the electro-hydraulic servo actuator test machine body is inspected once, and can realize automatic control without manual cleaning, which greatly improves the working efficiency of the electro-hydraulic servo actuator test machine.

[0020] 2. The electro-hydraulic actuator testing machine drives the gear to rotate and engage with the second rack plate by the driven rod following the rotation of the rotating rod, thereby driving the second rack plate to slide upward, driving the top plate to push against the scraper plate and slide upward to automatically scrape and clean the metal debris or powder splashed on the transparent observation plate, so that the staff can check the inspection situation in time, and when the door of the protective shell is opened, the cleaning has been completed and there is no need to clean it again later.

[0021] 3. The electro-hydraulic actuator testing machine can automatically enter the magnet collection tank and collect the metal debris automatically when the air blowing plate blows away the metal debris, effectively reducing the situation where the metal debris falls to the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of an electro-hydraulic actuator testing machine proposed by the present invention;

[0023] Figure 2 A schematic diagram of the structure of the interior of a protective housing in an electro-hydraulic actuator testing machine proposed by the present invention;

[0024] Figure 3 This is a schematic structural diagram of the back of a transparent observation plate in an electro-hydraulic actuator testing machine proposed by the present invention;

[0025] Figure 4 A schematic structural diagram of an electro-hydraulic servo actuator testing machine body in an electro-hydraulic actuator testing machine proposed by the present invention;

[0026] Figure 5 An electro-hydraulic actuator testing machine proposed by the present invention Figure 4 The structural diagram of part A in the figure;

[0027] Figure 6 An electro-hydraulic actuator testing machine proposed by the present invention Figure 4 The structural diagram of part B;

[0028] Figure 7 A schematic diagram of the top structure of an electro-hydraulic actuator testing machine proposed by the present invention;

[0029] Figure 8 An electro-hydraulic actuator testing machine proposed by the present invention Figure 7 Schematic diagram of the structure of part C;

[0030] Fig. 9 A schematic diagram of the structure inside the gas cylinder of an electro-hydraulic actuator testing machine proposed by the present invention;

[0031] Fig.10 An electro-hydraulic actuator testing machine proposed by the present invention Fig. 9 The structural diagram of the E part;

[0032] Fig.11 It is a structural schematic diagram of a ratchet, a pawl, the inside of a circular disk, and a slide plate in an electro-hydraulic actuator testing machine proposed by the present invention;

[0033] Fig.12 The present invention provides an electro-hydraulic actuator test machine cover Fig.11 Schematic diagram of the structure of part D.

[0034] In the figure: 1. Electro-hydraulic servo actuator test machine body; 101. Bottom plate; 102. Column; 2. Motor; 3. Upper fixture; 4. Lower fixture; 5. Protective shell; 6. L-shaped support plate; 7. Mounting plate; 8. Air cylinder; 9. Blowing pipe; 10. Suction pipe; 11. Blowing plate; 12. Circular plate; 13. Sliding rod; 14. Inclined plate; 15. Rotating rod; 16. Driving plate; 17. Winding wheel; 18. Wire rope; 19. Sliding plate; 20. Threaded rod; 21. Fixed plate; 22. First synchronous belt; 23. Second synchronous belt; 24. First spring; 25. Rectangular plate; 26. Ratchet; 27 , elastic sheet; 28, first stopper; 29, ratchet; 30, circular disk; 31, first strip plate; 32, second strip plate; 33, torsion spring; 34, second stopper; 35, first rack plate; 36, first guide plate; 37, slide plate; 38, guide rod; 39, second spring; 40, third strip plate; 41, driven rod; 42, third synchronous belt; 43, gear; 44, second rack plate; 45, second guide plate; 46, rectangular slide frame; 47, transparent observation plate; 48, horizontal plate; 49, vertical rod; 50, third spring; 51, scraper; 52, top plate; 53, magnet collecting trough. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] Example 1: Reference Figure 1-Figure 12 An electro-hydraulic actuator test machine, comprising an electro-hydraulic servo actuator test machine body 1 and a bottom plate 101 arranged at the bottom of the electro-hydraulic servo actuator test machine body 1, a motor 2 is arranged at the bottom of the electro-hydraulic servo actuator test machine body 1, an upper clamp 3 and a lower clamp 4 are arranged on the surface of the electro-hydraulic servo actuator test machine body 1, a protective shell 5 and an L-shaped support plate 6 are arranged on the outside of the electro-hydraulic servo actuator test machine body 1, and further comprising: a mounting plate 7, fixedly connected to the top of the L-shaped support plate 6, a gas cylinder 8 is fixedly connected to the surface of the mounting plate 7, and one end of the gas cylinder 8 is fixedly connected to two A blowing pipe 9, the top of the air cylinder 8 is fixedly connected to an air suction pipe 10, and the ends of the two blowing pipes 9 away from the air cylinder 8 are fixedly connected to a blowing plate 11; a circular plate 12, the piston is connected to the inside of the air cylinder 8, and one side surface of the circular plate 12 is fixedly connected to a sliding rod 13, the sliding rod 13 is slidably connected to the inclined plate 14 on the air cylinder 8, and is fixedly connected to one end of the sliding rod 13; a rotating rod 15, which is rotatably connected to the top of the mounting plate 7, and one end of the rotating rod 15 is fixedly connected to a driving plate 16; a winding wheel 17, which is arranged on the rotating rod 15, and a wire rope 18 is arranged between the winding wheel 17 and the lower clamp 4.

[0038] In the present invention, when the winding wheel 17 is reversed, the rotating rod 15 can be rotated, driving the driving plate 16 to rotate and contact the inclined surface of the inclined plate 14, so that the inclined plate 14 pushes the sliding rod 13 and the circular plate 12, and the circular plate 12 squeezes out gas in the air cylinder 8 from the blowing pipe 9 to the blowing plate 11, thereby blowing and cleaning the metal debris in the upper clamp 3 and the lower clamp 4, which helps to automatically clean the debris inside the clamp after the electro-hydraulic servo actuator test machine body 1 is inspected once, and can achieve automatic control without manual cleaning, which greatly improves the working efficiency of the electro-hydraulic servo actuator test machine body 1.

[0039] Example 2: Reference Figure 2-Figure 4 and Figure 7-Figure 12, which is basically the same as the first embodiment, and further, the bottom of the motor 2 is fixedly connected to the bottom inner wall of the protective shell 5, and the two side surfaces of the lower clamp 4 are fixedly connected with sliding plates 19, and the surface of the sliding plate 19 is penetrated by a threaded rod 20 and is threadedly connected to the sliding plate 19, and the two sides of the upper clamp 3 are fixedly connected with fixed plates 21, and the threaded rod 20 penetrates the fixed plate 21 and is rotatably connected to the fixed plate 21. There are two groups of threaded rods 20 and the two groups of threaded rods 20 are symmetrically arranged with the center line of the lower clamp 4 as the symmetry axis, and the two threaded rods 20 are transmission-connected to the motor 2 by a first synchronous belt 22 and a second synchronous belt 23.

[0040] In the present invention, by starting the motor 2, in cooperation with the first synchronous belt 22 and the second synchronous belt 23, the two threaded rods 20 can be driven to rotate simultaneously, so that the sliding plate 19 drives the lower clamp 4 to slide upward, and cooperates with the upper clamp 3 to realize the inspection of the electro-hydraulic actuator.

[0041] The bottom of the threaded rod 20 is rotatably connected to the bottom inner wall of the protective shell 5, the threaded rod 20 passes through the bottom plate 101 and is rotatably connected to the bottom plate 101, the top surface of the bottom plate 101 is fixedly connected with a column 102, the column 102 passes through the lower clamp 4 and is slidably connected to the lower clamp 4, the top of the column 102 passes through the fixed plate 21 and is fixedly connected to the fixed plate 21, the L-shaped support plate 6 is fixedly connected to the bottom plate 101, and the inside of the blowing pipe 9 and the suction pipe 10 are fixedly installed with a one-way valve, and the two blowing plates 11 are respectively aligned with the upper clamp 3 and the lower clamp 4.

[0042] In the present invention, the column 102 can play a guiding role when the clamp 4 moves upward driven by the sliding plate 19, which helps to make it run stably. The one-way valve inside the blowing pipe 9 and the suction pipe 10 can prevent the gas from being blown out through the suction pipe 10 during blowing, and prevent the gas from being sucked in from the blowing plate 11 during inhalation.

[0043] The sliding rod 13 passes through the air cylinder 8 and is slidably connected to the air cylinder 8. A first spring 24 is sleeved on the surface of the sliding rod 13 close to the outside of the air cylinder 8. One end of the first spring 24 is fixedly connected to the inclined plate 14, and the other end of the first spring 24 is fixedly connected to the outer wall of the air cylinder 8. The driving plate 16 is slidably connected to the inclined plate 14. A rectangular plate 25 is fixedly connected to the surface of the mounting plate 7. The rotating rod 15 passes through the rectangular plate 25 and is rotatably connected to the rectangular plate 25. The wire rope 18 is wound on the winding wheel 17. The winding wheel 17 passes through the rotating rod 15 and is rotatably connected to the rotating rod 15.

[0044] In the present invention, when the inclined plate 14 is resisted and the sliding rod 13 is pushed, the first spring 24 will be compressed. When the driving plate 16 is disengaged from the inclined plate 14, the first spring 24 can automatically reset the inclined plate 14, the sliding rod 13 and the circular plate 12, so that air can be sucked inside the air cylinder 8, thereby automatically sucking air into the suction pipe 10, so that the blowing plate 11 can repeatedly blow and clean the metal debris, and the rectangular plate 25 can support the rotating rod 15.

[0045] A pawl 26 is hinged on the surface of the rectangular plate 25 close to the body 1 of the electro-hydraulic servo actuator testing machine, an elastic sheet 27 is fixedly connected between the pawl 26 and the rectangular plate 25, a first stopper 28 is fixedly connected to the surface of the rectangular plate 25, a ratchet 29 penetrates the surface of the rotating rod 15 and is fixedly connected to the rotating rod 15, a circular disk 30 is fixedly connected to the side of the ratchet 29 away from the rectangular plate 25, and the circular disk 30 penetrates the rotating rod 15 and is fixedly connected to the rotating rod 15.

[0046] In the present invention, the ratchet 29 can be rotated in only one direction through the action of the pawl 26 and the first stopper 28, so as to prevent the rotating rod 15 from rotating when the lower clamp 4 is raised for detection.

[0047] A plurality of first strip plates 31 are fixedly connected to the inner wall of the circular disk 30, a second strip plate 32 is hingedly connected to the surface of the winding wheel 17, a torsion spring 33 is fixedly connected between the second strip plate 32 and the winding wheel 17, a second stopper 34 is fixedly connected to the surface of the winding wheel 17, a tooth groove is provided on the surface of the winding wheel 17, a first rack plate 35 is meshed at the bottom of the tooth groove of the winding wheel 17, and a first guide plate 36 is fixedly connected to the bottom of the first rack plate 35.

[0048] In the present invention, the torsion spring 33 can be used to rotate the second strip plate 32 to compress the torsion spring 33, so that the second strip plate 32 can automatically disengage from the first strip plate 31. The second stopper 34 can be used to enable the second strip plate 32 to drive the first strip plate 31 to rotate when following the reverse rotation of the winding wheel 17, thereby driving the circular disk 30 and the ratchet 29 to rotate, and then the rotating rod 15 to rotate.

[0049] A slide plate 37 is fixedly connected to the surface of the mounting plate 7, and the first guide plate 36 is slidably connected in the slide plate 37. Guide rods 38 are fixedly connected to the inner walls at both ends of the slide plate 37. The guide rods 38 penetrate the first guide plate 36 and are slidably connected to the first guide plate 36. A second spring 39 is sleeved on the surface of the guide rod 38, and one end of the second spring 39 is fixedly connected to the first guide plate 36, and the other end of the second spring 39 is fixedly connected to the inner wall of the slide plate 37.

[0050] In the present invention, the wire rope 18 can be pulled to rotate the winding wheel 17 while the lower clamp 4 rises, and the teeth on the winding wheel 17 engage with the first rack plate 35, so that the first rack plate 35 slides linearly inside the slide plate 37 under the support of the first guide plate 36. The guide rod 38 can ensure that the first guide plate 36 slides stably and the second spring 39 is not compressed and twisted. The second spring 39 helps to automatically reset the first rack plate 35 when the lower clamp 4 and the sliding plate 19 slide down, thereby driving the winding wheel 17 to reverse and automatically reel in the wire rope 18.

[0051] Example 3: Reference Figure 2-Figure 4 and Figure 6-Figure 9 , which is basically the same as the first embodiment, and further, a third strip plate 40 is fixedly connected to the side surface of the mounting plate 7, a driven rod 41 penetrates the surface of the third strip plate 40 and is rotatably connected to the third strip plate 40, a third synchronous belt 42 is transmission-connected between the driven rod 41 and the rotating rod 15, and a gear 43 is fixedly connected to one end of the driven rod 41 away from the third strip plate 40, and a second rack plate 44 is meshed on the left surface of the gear 43.

[0052] In the present invention, the third strip plate 40 can provide support and stability for the driven rod 41 , and when the rotating rod 15 rotates, the third synchronous belt 42 can drive the driven rod 41 to rotate synchronously, thereby driving the gear 43 to rotate.

[0053] A second guide plate 45 is fixedly connected to the left bottom surface of the second rack plate 44, a rectangular sliding frame 46 is fixedly connected to the left inner wall of the protective shell 5, and the second guide plate 45 is slidably connected in the rectangular sliding frame 46. A transparent observation plate 47 is fixedly connected to the surface of the protective shell 5, and a cross plate 48 is fixedly connected to the top surface of the transparent observation plate 47 near the inside of the protective shell 5, and a vertical rod 49 is fixedly connected to the bottom surface of the cross plate 48. A third spring 50 is sleeved on the surface of the vertical rod 49, and a scraper 51 is slidably connected to the inner wall of the protective shell 5 near the bottom of the transparent observation plate 47. The scraper 51 penetrates the vertical rod 49 and is slidably connected to the vertical rod 49. One end of the third spring 50 is fixedly connected to the cross plate 48, and the other end of the third spring 50 is fixedly connected to the scraper 51. A top plate 52 is fixedly connected to the right top surface of the second rack plate 44, and a magnet collecting groove 53 is fixedly connected to the inner wall of the protective shell 5.

[0054] In the present invention, when the electro-hydraulic actuator test machine is inspected, it is inevitable that some metal components may splash during the inspection. Some rust and debris are likely to splash onto the staff, causing life-threatening. Therefore, the protective shell 5 can be used to block the splash of metal debris, but the inspection of the components needs to be observed in time. The inspection situation can be checked in time through the transparent observation plate 47. However, when the components are inspected, debris such as debris will splash onto the transparent observation plate 47, affecting the observation effect. When the driven rod 41 rotates with the rotating rod 15, it drives the gear 43 to rotate and mesh with the second rack plate 44, so that the second rack plate 44 can be driven to slide upward, and the top plate 52 on the top can be driven to push the scraper 51 upward to slide against the transparent observation plate The metal debris or powder splashed on 47 is automatically scraped and cleaned, which is convenient for the staff to check the inspection situation in time, and when the door of the protective shell 5 is opened, the cleaning has been completed and there is no need to clean it again later. When the second rack plate 44 slides upward, the second guide plate 45 slides inside the rectangular slide frame 46, so that the sliding of the second rack plate 44 can be more stable. When the scraper 51 slides up, the third spring 50 will be compressed. The third spring 50 can also automatically reset the scraper 51. The vertical rod 49 helps to guide the scraper 51. Through the magnet collecting groove 53, when the blowing plate 11 blows away the metal debris, it can automatically enter the magnet collecting groove 53 and collect it automatically, which effectively reduces the situation where metal debris falls to the outside.

[0055] Embodiment 4: A method for using an electro-hydraulic actuator testing machine, using the following steps:

[0056] S1. By starting various components on the electro-hydraulic servo actuator test machine body 1, the lower clamp 4 is driven to rise, and the wire rope 18 is pulled to drive the winding wheel 17 to rotate. The winding wheel 17 drives the second strip plate 32 to rotate and contact the first strip plate 31. Under the action of the pawl 26 limiting the ratchet 29, the second strip plate 32 slides over the first strip plate 31 through the compression torsion spring 33. At this time, the ratchet 29 and the rotating rod 15 will not be driven to rotate. At the same time, the tooth groove on the winding wheel 17 is engaged with the first rack plate 35 to make the first rack plate 35 slide to the right, and the second spring 39 is compressed through the first guide plate 36, so that the second spring 39 is in a compressed state;

[0057] S2. After the inspection of the electro-hydraulic servo actuator test machine body 1 is completed, the lower fixture 4 is lowered. During the lowering process, the second spring 39 has a reset force, which drives the first rack plate 35 to slide to the left and reset, so that the winding wheel 17 starts to rotate in the opposite direction. The winding wheel 17 drives the second strip plate 32 to reverse and abut against the first strip plate 31, thereby driving the circular disk 30 to rotate, so that the ratchet 29 reverses, and the pawl 26 will no longer limit the ratchet 29, so that the rotating rod 15 rotates, driving the driving plate 16 to rotate and abut against the inclined surface of the inclined plate 14, so that the inclined plate 14 pushes the sliding rod 13, and then pushes the circular plate 12 to make a piston movement in the air cylinder 8, thereby squeezing the gas in the air cylinder 8 out of the blowing pipe 9, and then blowing it out from the blowing plate 11, and blowing away the metal debris in the upper fixture 3 and the lower fixture 4.

[0058] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electro-hydraulic actuator testing machine, comprising an electro-hydraulic servo actuator testing machine body (1) and a bottom plate (101) arranged at the bottom of the electro-hydraulic servo actuator testing machine body (1), a motor (2) being arranged at the bottom of the electro-hydraulic servo actuator testing machine body (1), an upper clamp (3) and a lower clamp (4) being arranged on the surface of the electro-hydraulic servo actuator testing machine body (1), characterized in that: The electro-hydraulic servo actuator testing machine body (1) is provided with a protective housing (5) and an L-shaped support plate (6) on the outside, and further comprises: A mounting plate (7) is fixedly connected to the top of the L-shaped support plate (6); a gas cylinder (8) is fixedly connected to the surface of the mounting plate (7); one end of the gas cylinder (8) is fixedly connected to two blowing pipes (9); the top of the gas cylinder (8) is fixedly connected to an air suction pipe (10); and one end of the two blowing pipes (9) away from the gas cylinder (8) is fixedly connected to a blowing plate (11); A circular plate (12), the piston of which is connected to the inside of the gas cylinder (8); a sliding rod (13) is fixedly connected to a surface of one side of the circular plate (12); and the sliding rod (13) is slidably connected to the gas cylinder (8); An inclined plate (14) fixedly connected to one end of the sliding rod (13); A rotating rod (15) is rotatably connected to the top of the mounting plate (7), and one end of the rotating rod (15) is fixedly connected to a driving plate (16); A winding wheel (17) is arranged on the rotating rod (15), and a steel wire rope (18) is arranged between the winding wheel (17) and the lower clamp (4); The L-shaped support plate (6) is fixedly connected to the bottom plate (101); one-way valves are fixedly installed inside the air blowing pipe (9) and the air suction pipe (10); and the two air blowing plates (11) are respectively aligned with the upper clamp (3) and the lower clamp (4); The sliding rod (13) passes through the air cylinder (8) and is slidably connected to the air cylinder (8); a first spring (24) is sleeved on the surface of the sliding rod (13) near the outside of the air cylinder (8); one end of the first spring (24) is fixedly connected to the inclined plate (14); the other end of the first spring (24) is fixedly connected to the outer wall of the air cylinder (8); the driving plate (16) is slidably connected to the inclined plate (14); a rectangular plate (25) is fixedly connected to the surface of the mounting plate (7); the rotating rod (15) passes through the rectangular plate (25) and is rotatably connected to the rectangular plate (25); the steel wire rope (18) is wound on a winding wheel (17); the winding wheel (17) passes through the rotating rod (15) and is rotatably connected to the rotating rod (15); A ratchet (26) is hingedly connected to the surface of a rectangular plate (25) close to the body (1) of the electro-hydraulic servo actuator test machine, an elastic sheet (27) is fixedly connected between the ratchet (26) and the rectangular plate (25), a first stopper (28) is fixedly connected to the surface of the rectangular plate (25), a ratchet (29) penetrates the surface of the rotating rod (15) and is fixedly connected to the rotating rod (15), a circular disk (30) is fixedly connected to the side of the ratchet (29) away from the rectangular plate (25), and the circular disk (30) penetrates the rotating rod (15) and is fixedly connected to the rotating rod (15); A plurality of first strip plates (31) are fixedly connected to the inner wall of the circular disk (30); a second strip plate (32) is hingedly connected to the surface of the winding wheel (17); a torsion spring (33) is fixedly connected between the second strip plate (32) and the winding wheel (17); a second stopper (34) is fixedly connected to the surface of the winding wheel (17); a tooth groove is formed on the surface of the winding wheel (17); a first rack plate (35) is meshed at the bottom of the tooth groove of the winding wheel (17); and a first guide plate (36) is fixedly connected to the bottom of the first rack plate (35); A slide plate (37) is fixedly connected to the surface of the mounting plate (7), the first guide plate (36) is slidably connected in the slide plate (37), guide rods (38) are fixedly connected to the inner walls at both ends of the slide plate (37), the guide rods (38) penetrate the first guide plate (36) and are slidably connected to the first guide plate (36), a second spring (39) is sleeved on the surface of the guide rod (38), one end of the second spring (39) is fixedly connected to the first guide plate (36), and the other end of the second spring (39) is fixedly connected to the inner wall of the slide plate (37).

2. The electro-hydraulic actuator testing machine according to claim 1, characterized in that: The bottom of the motor (2) is fixedly connected to the bottom inner wall of the protective housing (5); sliding plates (19) are fixedly connected to the two side surfaces of the lower clamp (4); threaded rods (20) penetrate the surface of the sliding plates (19) and are threadedly connected to the sliding plates (19); fixed plates (21) are fixedly connected to the two sides of the upper clamp (3); the threaded rods (20) penetrate the fixed plates (21) and are rotatably connected to the fixed plates (21); two groups of threaded rods (20) are provided and the two groups of threaded rods (20) are symmetrically arranged with the center line of the lower clamp (4) as the symmetry axis; a first synchronous belt (22) and a second synchronous belt (23) are transmission-connected between the two threaded rods (20) and the motor (2).

3. The electro-hydraulic actuator testing machine according to claim 2, characterized in that: The bottom of the threaded rod (20) is rotatably connected to the bottom inner wall of the protective shell (5); the threaded rod (20) passes through the bottom plate (101) and is rotatably connected to the bottom plate (101); a column (102) is fixedly connected to the top surface of the bottom plate (101); the column (102) passes through the lower clamp (4) and is slidably connected to the lower clamp (4); and the top of the column (102) passes through the fixed plate (21) and is fixedly connected to the fixed plate (21).

4. The electro-hydraulic actuator testing machine according to claim 1, characterized in that: A third strip plate (40) is fixedly connected to the side surface of the mounting plate (7); a driven rod (41) penetrates the surface of the third strip plate (40) and is rotatably connected to the third strip plate (40); a third synchronous belt (42) is transmission-connected between the driven rod (41) and the rotating rod (15); a gear (43) is fixedly connected to one end of the driven rod (41) away from the third strip plate (40); a second rack plate (44) is meshed on the left side surface of the gear (43).

5. The electro-hydraulic actuator testing machine according to claim 4, characterized in that: A second guide plate (45) is fixedly connected to the left bottom surface of the second rack plate (44); a rectangular sliding frame (46) is fixedly connected to the left inner wall of the protective shell (5); the second guide plate (45) is slidably connected in the rectangular sliding frame (46); a transparent observation plate (47) is fixedly connected to the surface of the protective shell (5); a horizontal plate (48) is fixedly connected to the top surface of the transparent observation plate (47) near the inside of the protective shell (5); a vertical rod (49) is fixedly connected to the bottom surface of the horizontal plate (48); and the surface of the vertical rod (49) is fixedly connected to the bottom surface of the horizontal plate (48). The face cover is provided with a third spring (50), and a scraper (51) is slidably connected to the inner wall of the protective shell (5) near the bottom of the transparent observation plate (47), and the scraper (51) passes through the vertical rod (49) and is slidably connected to the vertical rod (49), one end of the third spring (50) is fixedly connected to the horizontal plate (48), and the other end of the third spring (50) is fixedly connected to the scraper (51), the top surface of the right side of the second rack plate (44) is fixedly connected to the top plate (52), and the inner wall of the protective shell (5) is fixedly connected to the magnet collection groove (53).

6. A method for using an electro-hydraulic actuator testing machine, used to operate the electro-hydraulic actuator testing machine according to any one of claims 1 to 5, characterized in that: Use the following steps: S1. By starting various components on the body (1) of the electro-hydraulic servo actuator test machine, the lower clamp (4) is driven to rise, and the steel wire rope (18) is pulled to drive the winding wheel (17) to rotate. The winding wheel (17) drives the second strip plate (32) to rotate and contact with the first strip plate (31). Under the action of the pawl (26) limiting the ratchet (29), the second strip plate (32) slides over the first strip plate (31) through the compression torsion spring (33). At this time, the ratchet (29) and the rotating rod (15) are not driven to rotate. At the same time, the tooth groove on the winding wheel (17) is engaged with the first rack plate (35) to make the first rack plate (35) slide to the right, and the second spring (39) is compressed through the first guide plate (36), so that the second spring (39) is in a compressed state; S2. After the inspection of the electro-hydraulic servo actuator test machine body (1) is completed, the lower fixture (4) is lowered. During the lowering process, the second spring (39) has a reset force, which drives the first rack plate (35) to slide leftward and reset, causing the winding wheel (17) to start to rotate in the opposite direction. The winding wheel (17) drives the second strip plate (32) to reverse and contact the first strip plate (31), thereby driving the circular plate (30) to rotate, causing the ratchet wheel (29) to reverse and the ratchet pawl (26) to rotate. ) will no longer limit the ratchet wheel (29), thereby causing the rotating rod (15) to rotate, driving the driving plate (16) to rotate and contact the inclined surface of the inclined plate (14), so that the inclined plate (14) pushes the sliding rod (13), and then pushes the circular plate (12) to perform a piston movement in the air cylinder (8), thereby squeezing the gas in the air cylinder (8) out of the blowing pipe (9), and then blowing it out from the blowing plate (11), blowing and removing the metal debris in the upper clamp (3) and the lower clamp (4).

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