Testing device for electro-hydraulic servo valve of steering engine

Abstract

The invention belongs to the technical field of steering engine electro-hydraulic servo valve test design, and particularly relates to a steering engine electro-hydraulic servo valve test device which is designed to preliminarily clamp and fix an electro-hydraulic servo valve through rubber plates capable of moving in opposite directions, can adapt to electro-hydraulic servo valves of different sizes, and is designed to wrap the electro-hydraulic servo valve through the flexibility of the rubber plates. The electro-hydraulic servo valve clamping device can effectively clamp and fix electro-hydraulic servo valves in different shapes, so that the electro-hydraulic servo valve clamping device can be suitable for clamping and fixing the electro-hydraulic servo valves in various models and specifications for oil pressure detection tests, has good universality, is designed to be in contact connection with a rubber plate and a telescopic air cylinder in a ball socket mode, has large-range shape adaptation capacity, and is suitable for being used for oil pressure detection tests of the electro-hydraulic servo valves. And the friction force between the rubber plate and the electro-hydraulic servo valve can be improved through the rubber material of the rubber plate, and the reliability of clamping and fixing the electro-hydraulic servo valve is guaranteed.

Description

Technical Field

[0001] This application belongs to the technical field of electro-hydraulic servo valve test design for steering gears, and specifically relates to an electro-hydraulic servo valve test device for steering gears. Background Art

[0002] The marine electro-hydraulic servo valve for steering gears is used to realize the automation of rudder turning for large and medium-sized ships. It converts the input electrical signal into the output of the piston rod position, drives the swash plate of the servo variable pump, changes the flow rate into the driving oil cylinder, and realizes the control of the steering gear. In order to ensure that the electro-hydraulic servo valve can work better, it is necessary to detect the oil pressure of the electro-hydraulic servo valve.

[0003] There are various model specifications for electro-hydraulic servo valves, with different sizes and structures. Currently, most electro-hydraulic servo valve test benches are special test benches, which can usually only clamp and fix electro-hydraulic servo valves of a single model specification. It is difficult to effectively clamp and fix electro-hydraulic servo valves of other model specifications, and it is not suitable for conducting oil pressure detection tests on electro-hydraulic servo valves of other model specifications. There is a risk of disconnection of the detection connector, and the versatility is poor.

[0004] In view of the existence of the above technical defects, this application is proposed. Summary of the Invention

[0005] The purpose of this application is to provide an electro-hydraulic servo valve test device for steering gears, which can adaptively and effectively clamp and fix electro-hydraulic servo valves of various model specifications, and is convenient for conducting oil pressure detection tests on electro-hydraulic servo valves of various model specifications.

[0006] The technical solution of this application is as follows:

[0007] An electro-hydraulic servo valve test device for steering gears includes a test bench, an adjustment disk, a driving motor, a transmission shaft, a driving bevel gear, a lead screw, a driven bevel gear, a moving block, a clamping plate, a rubber plate, an adapter seat, a telescopic cylinder, and a spherical connecting block;

[0008] The adjustment disk is arranged on the tabletop of the test bench, and the upper surface has an installation groove.

[0009] The driving motor is arranged below the test bench;

[0010] One end of the transmission shaft is connected to the output shaft of the driving motor;

[0011] The driving bevel gear is arranged in the installation groove, and its connecting shaft penetrates through the adjustment disk, the test bench and is connected to the other end of the transmission shaft;

[0012] There are two lead screws, which are arranged in the installation groove and are relatively arranged on both sides of the driving bevel gear;

[0013] There are two driven bevel gears, which are connected to the two lead screws and are in tooth engagement with the driving bevel gear;

[0014] There are two moving blocks, which are threadedly connected to the two lead screws and slidably connected with the mounting grooves;

[0015] There are two clamping plates, which are connected to the two moving blocks opposite to each other and perpendicular to the adjusting disk;

[0016] There are two rubber plates, and the middle parts are connected to the inner sides of the two clamping plates;

[0017] There are two pairs of adapters, each pair of adapters is connected to the horizontal ends of a rubber plate, located between the rubber plate and the clamping plate, and has a ball socket on it, and a spherical connecting block is set in each ball socket;

[0018] There are two pairs of telescopic cylinders, each pair of telescopic cylinders is connected to the horizontal ends of a clamping plate, and the piston rods of the telescopic cylinders are connected to two corresponding spherical connecting blocks.

[0019] According to at least one embodiment of the present application, the steering gear electro-hydraulic servo valve test device further includes a mounting plate;

[0020] There are two mounting plates, which are arranged in the mounting groove, connected to the inner side of the mounting groove, sleeved on the two lead screws, and connected to the lead screws through threads.

[0021] According to at least one embodiment of the present application, the steering gear electro-hydraulic servo valve test device further includes an L-shaped carrier frame;

[0022] There are two L-shaped bearing frames, one side wall of which is connected to the top of the two moving blocks, and the other side wall is connected to the two clamping plates.

[0023] According to at least one embodiment of the present application, in the above-mentioned steering gear electro-hydraulic servo valve test device, the adjusting disk is rotationally connected to the test bench, and the adjusting disk can rotate relative to the test bench.

[0024] According to at least one embodiment of the present application, the steering gear electro-hydraulic servo valve test device further includes a disconnect cylinder, a transmission cylinder, a driven ring gear, a driving gear, a carrier plate, and a lifting cylinder;

[0025] The disconnect cylinder is set between the active bevel gear and the transmission shaft, which can drive the active bevel gear to rise and fall in the installation groove. When driving the active bevel gear to rise, the active bevel gear can be engaged with the tooth patterns of the two movable bevel gears; when driving the active bevel gear to fall, the active bevel gear can be separated from the tooth patterns of the two movable bevel gears.

[0026] The transmission cylinder is sleeved on the outer periphery of the transmission shaft, with the top passing through the test bench and connected to the adjustment plate. The disconnect cylinder is located inside the transmission cylinder;

[0027] The driven ring gear is connected to the inside of the transmission cylinder;

[0028] The driving gear is sleeved on the outer periphery of the transmission shaft and located below the transmission cylinder;

[0029] The carrier plate is sleeved on the transmission shaft and is located below the driving gear;

[0030] There are multiple lifting cylinders, which are circumferentially connected between the driving gear and the carrier plate. They can make the driving gear slide axially along the transmission shaft and rise and fall. When driving the driving gear to rise, the driving gear can enter the inner side of the transmission cylinder and engage with the teeth of the driven gear ring; when driving the driving gear to descend, the driving gear can escape from the transmission cylinder and separate from the driven gear ring.

[0031] According to at least one embodiment of the present application, in the above-mentioned steering gear electro-hydraulic servo valve test device, a protrusion is provided on the transmission shaft, and a groove is provided on the driving gear, and the groove is clamped on the protrusion.

[0032] According to at least one embodiment of the present application, in the above-mentioned steering gear electro-hydraulic servo valve test device, the matching structure of the groove and the protrusion between the driving gear and the transmission shaft is distributed in multiple locations in the circumferential direction, and the groove is only stuck on the protrusion when the driving gear rises and enters the inner side of the transmission cylinder and engages with the teeth of the driven ring gear. When the driving gear descends, escapes from the transmission cylinder, and separates from the driven ring gear, the groove and the protrusion are separated.

[0033] According to at least one embodiment of the present application, the steering gear electro-hydraulic servo valve test device further includes a box;

[0034] The box body is supported under the test bench, the driving motor is located inside the box body, and a double door is provided on the box body, and an observation window is provided on the double door.

[0035] According to at least one embodiment of the present application, the steering gear electro-hydraulic servo valve test device further includes an external U-shaped bracket;

[0036] The outer U-shaped bracket is arranged inside the box body, with the opening facing upward, and the side walls on both sides are connected to the bottom of the test bench. The drive motor is located inside the outer U-shaped bracket and connected to the bottom of the outer U-shaped bracket.

[0037] According to at least one embodiment of the present application, the steering gear electro-hydraulic servo valve test device further includes an inner U-shaped bracket;

[0038] The inner U-shaped bracket is arranged on the inner side of the outer U-shaped bracket, with the opening downward, and the side walls on both sides are connected to the bottom of the outer U-shaped bracket. The drive motor is located on the inner side of the outer U-shaped bracket. The top of the inner U-shaped bracket is sleeved on the outer periphery of the transmission shaft and supported under the carrying plate. It is rotatably connected to the carrying plate, and the carrying plate can rotate relative to the inner U-shaped bracket.

[0039] This application has at least the following beneficial technical effects:

[0040] Provided is a test device for a steering gear electro-hydraulic servo valve. It is designed to initially clamp and fix the electro-hydraulic servo valve with rubber plates that can move towards each other, which can adapt to electro-hydraulic servo valves of different sizes. And by designing to utilize the flexibility of the rubber plates to wrap the electro-hydraulic servo valve, effective clamping and fixing of electro-hydraulic servo valves of different shapes can be achieved. In this way, it can be applicable to the clamping and fixing for the oil pressure detection tests of electro-hydraulic servo valves of various models and specifications, with good versatility. Also, it is designed that the rubber plates are in contact connection with the telescopic cylinders in the form of ball sockets, having a large range of shape adaptation capabilities, and the friction between the rubber plates and the electro-hydraulic servo valve can be increased by setting the rubber material of the rubber plates, ensuring the reliability of clamping and fixing the electro-hydraulic servo valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 FIG. is a schematic diagram of the overall structure of the test device for the steering gear electro-hydraulic servo valve provided by the embodiment of the present application;

[0042] Figure 2 FIG. is a partial schematic diagram of the test device for the steering gear electro-hydraulic servo valve provided by the embodiment of the present application;

[0043] Figure 3 FIG. is another partial schematic diagram of the test device for the steering gear electro-hydraulic servo valve provided by the embodiment of the present application;

[0044] Figure 4 is Figure 3 a schematic diagram of the partial area A in FIG.

[0045] Figure 5 FIG. is an external shape schematic diagram of the test device for the steering gear electro-hydraulic servo valve provided by the embodiment of the present application;

[0046] Wherein:

[0047] 1 - box body; 2 - test bench; 3 - disconnection cylinder; 4 - outer U-shaped bracket; 5 - driving motor; 6 - inner U-shaped bracket; 7 - transmission shaft; 8 - bearing plate; 9 - lifting cylinder; 10 - driving gear; 11 - driven gear ring; 12 - transmission cylinder; 13 - adjusting disc; 14 - spherical connecting block; 15 - mounting groove; 16 - driving bevel gear; 17 - driven bevel gear; 18 - mounting plate; 19 - lead screw; 20 - moving block; 21 - L-shaped bearing frame; 22 - clamping plate; 23 - rubber plate; 24 - telescopic cylinder; 25 - adapter seat; 26 -; 27 -.

[0048] For better illustrating this embodiment, some contents in the drawings will be omitted, enlarged or reduced, which are only for illustrative purposes and should not be construed as a limitation to the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0049] To make the technical solution and its advantages of this application more clear, the technical solution of this application will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described here are only some of the embodiments of this application and are only used to explain this application, not to limit this application. It should be noted that for ease of description, only the parts relevant to this application are shown in the accompanying drawings, and other relevant parts can refer to the general design.

[0050] In addition, unless otherwise defined, the technical or scientific terms used in the description of this application shall have the ordinary meanings understood by those skilled in the art to which this application belongs. The term "include" as used in the description of this application means that the concepts preceding the term include the concepts listed after the term and their equivalents, without excluding other related concepts.

[0051] In addition, the words used in the description of this application to indicate orientation are only used to indicate relative directions or positional relationships. When the absolute position of the object being described changes, its relative positional relationship may also change accordingly. It should also be noted that, unless otherwise clearly specified and limited, the words "installation", "connection" and similar words used in the description of this application should be understood in a broad sense. For example, the connection can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand their specific meanings in this application based on the specific circumstances.

[0052] A steering gear electro-hydraulic servo valve test device, such as Figure 1 As shown, it includes a test bench 2, an adjustment disk 13, a drive motor 5, a transmission shaft 7, an active bevel gear 16, a lead screw 19, a driven bevel gear 17, a moving block 20, a clamping plate 22, a rubber plate 23, an adapter 25, a telescopic cylinder 24, and a spherical connecting block 14.

[0053] The test bench 2 can be designed to be rectangular.

[0054] The adjustment disk 13 is arranged on the table of the test bench 2 and can be designed to be circular, with a mounting groove 15 on the upper surface.

[0055] The driving motor 5 is arranged below the test bench 2 .

[0056] One end of the transmission shaft 7 is connected to the output shaft of the drive motor 5 .

[0057] The driving bevel gear 16 is arranged in the mounting groove 15 , and a connecting shaft thereon passes through the adjusting disk 13 , the test bench 2 and is connected to the other end of the transmission shaft 7 .

[0058] There are two lead screws 19, which are arranged in the installation groove 15, relatively arranged on both sides of the driving bevel gear 16, inserted into the rotating grooves opened on the side walls at both ends of the installation groove 15, and are rotatably connected to the installation groove 15, as Figure 2 shown.

[0059] There are two driven bevel gears 17, which are connected to the two lead screws 19 and are in tooth engagement with the driving bevel gear 16.

[0060] There are two moving blocks 20, which can be designed to be rectangular, are threadedly connected to the two lead screws 19, and are slidably connected to the installation groove 15. Specifically, they can be connected to the installation groove 15 by guide rails, and the guide rails can be arranged on the bottom or the side walls on both sides of the installation groove 15.

[0061] There are two clamping plates 22, which are relatively connected to the two moving blocks 20 and are perpendicular to the adjusting disc 13.

[0062] There are two rubber plates 23, and the middle parts are relatively connected to the inner sides of the two clamping plates 22. Specifically, adhesive connection can be adopted.

[0063] There are two pairs of adapter seats 25. Each pair of adapter seats 25 is connected to the horizontal two ends of a rubber plate 23. Specifically, adhesive connection can be adopted. They are located between the rubber plate 23 and the clamping plate 22, and have ball sockets on them. Spherical connection blocks 14 are arranged in each ball socket.

[0064] There are two pairs of telescopic cylinders 24. Each pair of telescopic cylinders 24 is connected to the horizontal two ends of a clamping plate 22, and its piston rod is connected to the corresponding two spherical connection blocks 14.

[0065] When using the electro-hydraulic servo valve test device disclosed in the above embodiment to perform oil pressure detection on the electro-hydraulic servo valve, the electro-hydraulic servo valve can be placed between the two rubber plates 23 on the adjusting disc 13. Drive the motor 5, drive the two lead screws 19 to rotate through the transmission shaft 1, the driving bevel gear 16 and the driven bevel gear 17, so that the two moving blocks 20, the clamping plates 22 and their rubber plates 23 move towards each other along the installation groove 15, make the two rubber plates 23 contact the electro-hydraulic servo valve, clamp the electro-hydraulic servo valve, and realize the preliminary clamping and fixing of the electro-hydraulic servo valve. Furthermore, use the two pairs of telescopic cylinders 24 to push out the two ends of the rubber plate 23 and wrap the electro-hydraulic servo valve from the side to realize the further effective clamping and fixing of the electro-hydraulic servo valve. After the test is over, the electro-hydraulic servo valve can be removed according to the reverse driving operation.

[0066] The steering gear electro-hydraulic servo valve test device disclosed in the above embodiment is designed to use a rubber plate 23 that can move toward each other to initially clamp and fix the electro-hydraulic servo valve, which can adapt to electro-hydraulic servo valves of different sizes. The design utilizes the flexibility of the rubber plate 23 to cover the electro-hydraulic servo valve, which can achieve effective clamping and fixation of electro-hydraulic servo valves of different shapes. In this way, it can be suitable for clamping and fixing electro-hydraulic servo valves of various models and specifications for oil pressure detection tests, and has good versatility. The rubber plate 23 and the telescopic cylinder 24 are designed to be in contact and connected in a ball-and-socket form, which has a wide range of shape adaptability. The rubber material of the rubber plate 23 can improve the friction between the rubber plate 23 and the electro-hydraulic servo valve, thereby ensuring the reliability of the clamping and fixation of the electro-hydraulic servo valve.

[0067] The steering gear electro-hydraulic servo valve test device disclosed in the above embodiment can be further designed to include a mounting plate 18 and an L-shaped carrier frame 21 .

[0068] There are two mounting plates 18, which can be designed to be rectangular and are set in the mounting groove 15. They are connected to the inner side of the mounting groove 15 and can be fixed with screws. They are sleeved on the two lead screws 19 and are connected to the lead screws 19 through threads to provide effective support for the lead screws 19.

[0069] There are two L-shaped carrier frames 21, one side wall of which is connected to the top of the two moving blocks 20, and the other side wall is connected to the two clamping plates 22, which can be fixed with screws to facilitate the connection between the moving blocks 20 and the clamping plates 22.

[0070] When conducting an oil pressure detection test on the electro-hydraulic servo valve, in addition to the need to reliably clamp and fix the electro-hydraulic servo valve, it is sometimes also necessary to rotate the direction of the electro-hydraulic servo valve. To this end, a rotating connection can be designed between the adjusting disk 13 and the test bench 2. The adjusting disk 13 can rotate relative to the test bench 2. In this way, the electro-hydraulic servo valve can be driven to rotate while being reliably clamped and fixed, thereby adjusting the direction of the electro-hydraulic servo valve. Specifically, the adjusting disk 13 and the test bench 2 can be designed to be connected in the form of an annular boss and a groove.

[0071] In order to facilitate the reliable clamping and fixing of the electro-hydraulic servo valve and the adjustment of its direction and to integrate functions, the steering gear electro-hydraulic servo valve test device disclosed in the above embodiment is further designed to include a disconnect cylinder 3, a transmission cylinder 12, a driven ring gear 11, a driving gear 10, a carrier plate 8, and a lifting cylinder 9. Figure 3 shown.

[0072] The disconnecting cylinder 3 is arranged between the driving bevel gear 16 and the transmission shaft 7. It can drive the driving bevel gear 16 to lift within a small range in the mounting groove 15. When driving the driving bevel gear 16 to rise, the driving bevel gear 16 can be meshed with the tooth patterns of the two driven bevel gears 17. At this time, the driving motor 5 can drive the two driven bevel gears 17 to rotate through the transmission shaft 1, the disconnecting cylinder 3, and the driving bevel gear 16. Then, it drives the two lead screws 19 to rotate, so that the two moving blocks 20, the clamping plates 22 and their rubber plates 23 move towards each other along the mounting groove 15, making the two rubber plates 23 contact the electro-hydraulic servo valve and clamp the electro-hydraulic servo valve, realizing the preliminary clamping and fixing of the electro-hydraulic servo valve; when driving the driving bevel gear 16 to descend, the driving bevel gear 16 can be separated from the tooth patterns of the two driven bevel gears 17. At this time, the driving motor 5 can no longer drive the two driven bevel gears 17 to rotate through the transmission shaft 1, the disconnecting cylinder 3, and the driving bevel gear 16.

[0073] The transmission cylinder 12 is sleeved on the outer periphery of the transmission shaft 7, penetrates through the test bench 2 at the top, and is connected to the adjusting disc 13. It can be integrally formed on the adjusting disc 13, is located below the driving bevel gear 16, and the disconnecting cylinder 3 is located inside the transmission cylinder 12.

[0074] The driven gear ring 11 is connected inside the transmission cylinder 12, and can be specifically designed to be located at the lower end of the transmission cylinder 12.

[0075] The driving gear 10 is sleeved on the outer periphery of the transmission shaft 7, and is located below the transmission cylinder 12, as Figure 4 shown.

[0076] The bearing disc 8 is sleeved on the transmission shaft 7 and is located below the driving gear 10.

[0077] There are multiple lifting cylinders 9, which can be designed to be 3. They are circumferentially connected between the driving gear 10 and the bearing disc 8, and can make the driving gear 10 slide axially along the transmission shaft 7 for lifting. When driving the driving gear 10 to rise, the driving gear 10 can enter the inside of the transmission cylinder 12 and be meshed with the tooth patterns of the driven gear ring 11. At this time, the driving motor 5 can drive the adjusting disc 13 to rotate through the transmission shaft 7, the bearing disc 8, the lifting cylinder 9, the driving gear 10, the driven gear ring 11, and the transmission cylinder 12, thereby realizing the adjustment of the direction of the electro-hydraulic servo valve; when driving the driving gear 10 to descend, the driving gear 10 can be disengaged from the transmission cylinder 12 and separated from the driven gear ring 11. At this time, the driving motor 5 can no longer drive the driven gear ring 11 and the transmission cylinder 12 to rotate through the transmission shaft 7, the bearing disc 8, the lifting cylinder 9, and the driving gear 10 to make the adjusting disc 13 rotate and adjust the direction of the electro-hydraulic servo valve.

[0078] For the electro-hydraulic servo valve test device of the rudder machine disclosed in the above embodiments, when it is necessary to clamp and fix the electro-hydraulic servo valve, the disconnection cylinder 3 can be driven to drive the driving bevel gear 16 to rise, so that the driving bevel gear 16 meshes with the tooth patterns of the two driven bevel gears 17. Then, the driving motor 5 can drive the two driven bevel gears 17 and their lead screws 19 to rotate through the transmission shaft 1, the disconnection cylinder 3, and the driving bevel gear 16, so that the two moving blocks 20, the clamping plates 22, and their rubber plates 23 move towards each other along the installation groove 15, and the two rubber plates 23 contact the electro-hydraulic servo valve to clamp the electro-hydraulic servo valve, realizing the preliminary clamping and fixing of the electro-hydraulic servo valve. After the clamping and fixing of the electro-hydraulic servo valve is completed, the disconnection cylinder 3 drives the driving bevel gear 16 to descend, so that the driving bevel gear 16 is separated from the tooth patterns of the two driven bevel gears 17.

[0079] When it is necessary to adjust the orientation of the electro-hydraulic servo valve, each lifting cylinder 9 can be driven to drive the driving gear 10 to rise, so that the driving gear 10 enters the inside of the transmission cylinder 12 and meshes with the tooth pattern of the driven gear ring 11. Then, the driving motor 5 can drive the adjusting disk 13 to rotate through the transmission shaft 7, the bearing disk 8, the lifting cylinder 9, the driving gear 10, the driven gear ring 11, and the transmission cylinder 12, thereby realizing the adjustment of the direction of the electro-hydraulic servo valve. After the orientation adjustment of the electro-hydraulic servo valve is completed, each lifting cylinder 9 drives the driving gear 10 to descend, so that the driving gear 10 disengages from the transmission cylinder 12 and is separated from the driven gear ring 11.

[0080] In order to reduce the force on each lifting cylinder 9 when adjusting the orientation of the electro-hydraulic servo valve and protect the lifting cylinder 9 from damage, it is designed that the transmission shaft 7 has a convex block and the driving gear 10 has a groove, and the groove is stuck on the convex block. In this way, the transmission shaft 7 can directly transmit force to the driving gear 10 through the cooperation structure between the groove and the convex block, thereby reducing the force on each lifting cylinder 9 when adjusting the orientation of the electro-hydraulic servo valve, protecting the lifting cylinder 9 from damage, and the cooperation structure of the groove and the convex block can be designed to be distributed in multiple places in the circumferential direction, and it is designed that the groove will only be stuck on the convex block when the driving gear 10 rises and enters the inside of the transmission cylinder 12 and meshes with the tooth pattern of the driven gear ring 11, and the groove is separated from the convex block when the driving gear 10 descends, disengages from the transmission cylinder 12, and is separated from the driven gear ring 11.

[0081] In order to make the overall structure of the electro-hydraulic servo valve test device of the rudder machine disclosed in the above embodiments stable, it is further designed that the electro-hydraulic servo valve test device disclosed in the above embodiments includes a box body 1, an outer U-shaped bracket 4, and an inner U-shaped bracket 6.

[0082] The box body 1 is supported below the test bench 2, and the driving motor 5 is inside the box body 1. In order to facilitate the disassembly, observation, and maintenance of the driving motor 5 and other structures, a pair of opening doors is provided on the box body 1, and an observation window is provided on the pair of opening doors.

[0083] The outer U-shaped bracket 4 is arranged inside the box body 1 with the opening facing upward, and both side walls are connected under the test bench. Specifically, it can be connected to the lower part of the test bench 2 through the connecting edge by screws or welding. The driving motor 5 is located inside the outer U-shaped bracket 4 and is connected to the bottom of the outer U-shaped bracket 4.

[0084] The inner U-shaped bracket 6 is arranged inside the outer U-shaped bracket 4 with the opening facing downward, and both side walls are connected to the bottom of the outer U-shaped bracket 4. The driving motor 5 is located inside the outer U-shaped bracket 4. The top of the inner U-shaped bracket 6 is sleeved on the outer periphery of the transmission shaft 7 and is supported under the bearing plate 8, and is rotatably connected with the bearing plate 8. The bearing plate 8 can rotate relative to the top of the inner U-shaped bracket 6. Specifically, the bearing plate 8 and the top of the inner U-shaped bracket 6 can be designed to be connected in a form of an annular boss and a groove.

[0085] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without departing from the principle of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present application.

Claims

1. An electro-hydraulic servo valve test device for a rudder machine, characterized in that, It includes a test bench (2), an adjusting disc (13), a driving motor (5), a transmission shaft (7), a driving bevel gear (16), a lead screw (19), a driven bevel gear (17), a moving block (20), a clamping plate (22), a rubber plate (23), an adapter seat (25), a telescopic cylinder (24), and a spherical connecting block (14); The adjusting disc (13) is arranged on the tabletop of the test bench (2), and its upper surface has a mounting groove (15); The driving motor (5) is arranged below the test bench (2); One end of the transmission shaft (7) is connected to the output shaft of the driving motor (5); The driving bevel gear (16) is arranged in the mounting groove (15), and its connecting shaft penetrates through the adjusting disc (13) and the test bench (2) and is connected to the other end of the transmission shaft (7); There are two lead screws (19), which are arranged in the mounting groove (15) and are relatively arranged on both sides of the driving bevel gear (16); There are two driven bevel gears (17), which are connected to the two lead screws (19) and are in tooth engagement with the driving bevel gear (16); There are two moving blocks (20), which are threadedly connected to the two lead screws (19) and are slidably connected to the mounting groove (15); There are two clamping plates (22), which are relatively connected to the two moving blocks (20) and are perpendicular to the adjusting disc (13); There are two rubber plates (23), and the middle parts are relatively connected to the inner sides of the two clamping plates (22); There are two pairs of adapter seats (25), and each pair of adapter seats (25) is connected to the horizontal ends of a rubber plate (23), located between the rubber plate (23) and the clamping plate (22), and has a ball socket thereon, and a spherical connecting block (14) is arranged in each ball socket; There are two pairs of telescopic cylinders (24), and each pair of telescopic cylinders (24) is connected to the horizontal ends of a clamping plate (22), and its piston rod is connected to the corresponding two spherical connecting blocks (14).

2. The electro-hydraulic servo valve test device for a rudder machine according to claim 1, wherein It further includes a mounting plate (18); There are two mounting plates (18), which are arranged in the mounting groove (15), connected to the inner side of the mounting groove (15), sleeved on the two lead screws (19), and are threadedly connected to the lead screws (19).

3. The electro-hydraulic servo valve test device for a rudder machine according to claim 2, wherein, It further includes an L-shaped carrier (21); There are two L-shaped carriers (21), one side wall is connected to the tops of the two moving blocks (20), and the other side wall is connected to the two clamping plates (22).

4. The electro-hydraulic servo valve test device for a rudder machine according to claim 3, wherein The adjusting disc (13) is rotatably connected to the test bench (2), and the adjusting disc (13) can rotate relative to the test bench (2).

5. The electro-hydraulic servo valve test device for a rudder machine according to claim 4, characterized in that, It further includes a disconnecting cylinder (3), a transmission cylinder (12), a driven gear ring (11), a driving gear (10), a bearing disc (8), and a lifting cylinder (9); The disconnecting cylinder (3) is arranged between the driving bevel gear (16) and the transmission shaft (7), and can drive the driving bevel gear (16) to lift in the mounting groove (15). When driving the driving bevel gear (16) to rise, it can make the driving bevel gear (16) engage with the tooth patterns of the two driven bevel gears (17); when driving the driving bevel gear (16) to descend, it can make the driving bevel gear (16) separate from the tooth patterns of the two driven bevel gears (17); The transmission cylinder (12) is sleeved on the outer periphery of the transmission shaft (7), penetrates through the top of the test bench (2), and is connected to the adjustment disk (13). The disconnection cylinder (3) is located inside the transmission cylinder (12). The driven gear ring (11) is connected to the inside of the transmission cylinder (12). The driving gear (10) is sleeved on the outer periphery of the transmission shaft (7) and is located below the transmission cylinder (12). The bearing disk (8) is sleeved on the transmission shaft (7) and is located below the driving gear (10). There are multiple lifting cylinders (9), which are connected circumferentially between the driving gear (10) and the bearing disk (8). The driving gear (10) can slide axially along the transmission shaft (7) for lifting. When the driving gear (10) is driven to rise, the driving gear (10) can enter the inside of the transmission cylinder (12) and mesh with the tooth pattern of the driven gear ring (11). When the driving gear (10) is driven to descend, the driving gear (10) can be disengaged from the transmission cylinder (12) and separated from the driven gear ring (11).

6. The electro-hydraulic servo valve test device for a rudder machine according to claim 5, characterized in that There are bumps on the transmission shaft (7), and grooves on the driving gear (10), and the grooves are stuck on the bumps.

7. The electro-hydraulic servo valve test device for a rudder machine according to claim 6, characterized in that The matching structure of the grooves and bumps between the driving gear (10) and the transmission shaft (7) is distributed in multiple places in the circumferential direction. And only when the driving gear (10) rises and enters the inside of the transmission cylinder (12) and meshes with the tooth pattern of the driven gear ring (11), the grooves are stuck on the bumps. When the driving gear (10) descends and is disengaged from the transmission cylinder (12) and separated from the driven gear ring (11), the grooves are separated from the bumps.

8. The electro-hydraulic servo valve test device for a rudder machine according to claim 7, characterized in that, It further includes a box body (1); The box body (1) is supported below the test bench (2). The driving motor (5) is located inside the box body (1). A pair of opening doors are arranged on the box body (1), and observation windows are arranged on the pair of opening doors.

9. The electro-hydraulic servo valve test device for a rudder machine according to claim 8, characterized in that, It further includes an outer U-shaped bracket (4); The outer U-shaped bracket (4) is arranged inside the box body (1) with an upward opening. The two side walls are connected below the test bench. The driving motor (5) is located inside the outer U-shaped bracket (4) and is connected to the bottom of the outer U-shaped bracket (4).

10. The electro-hydraulic servo valve test device for a rudder machine according to claim 9, characterized in that, It further includes an inner U-shaped bracket (6); The inner U-shaped bracket (6) is arranged inside the outer U-shaped bracket (4) with a downward opening. The two side walls are connected to the bottom of the outer U-shaped bracket (4). The driving motor (5) is located inside the outer U-shaped bracket (4). The top of the inner U-shaped bracket (6) is sleeved on the outer periphery of the transmission shaft (7), supported below the bearing disk (8), and is rotatably connected to the bearing disk (8). The bearing disk (8) can rotate relative to the inner U-shaped bracket (6).

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