A hydraulic valve test bench

Abstract

The application discloses a hydraulic valve test bench and relates to the technical field of hydraulic valve testing. The hydraulic valve test bench comprises a workbench, a control component is fixedly connected to the outer wall of the workbench, and an external testing mechanism is fixedly connected to the accommodating space of the workbench. The hydraulic valve test bench is characterized in that the suction pipe and the discharge pipe are both communicated to the sundry box through the flushing assembly, forming a closed circulation system. During testing, the impurity mixture is pumped into the upper cover space by the air blower to impact the valve, and then is returned to the sundry box for repeated use, thereby significantly reducing the cost of testing consumables. The test mechanism adopts mechanical extrusion type water pressure. The rotating part drives the guide screw rod to push the sliding block, so that the valve extrudes the zigzag pipe filled with water. The display assembly projects light rays to the bottom of the valve through a spotlight, and the light rays are enlarged and imaged on the black curtain through the light transmission lens. If the valve is pressed to generate a micro crack, the change of the light ray path will form an obvious abnormal light spot on the curtain, thereby realizing real-time visual identification of the micro crack.

Description

Technical Field

[0001] This invention relates to the field of hydraulic valve testing technology, specifically to a hydraulic valve testing bench. Background Technology

[0002] As a key control unit in a hydraulic system, the sealing performance, pressure resistance, and functional reliability of hydraulic valves directly affect the safety and stability of the entire hydraulic system. Therefore, performance testing of hydraulic valves is a crucial step in ensuring system reliability. Conventional hydraulic valve tests mainly include strength tests, sealing tests, and functional tests. Strength tests involve injecting liquid into the valve cavity and applying a specified pressure to check for deformation or potential leakage. Sealing tests apply pressure to the valve in the closed state to test its sealing performance and prevent media leakage. Functional tests simulate the valve's actual operating conditions to test the flexibility and reliability of its opening, closing, and regulating functions.

[0003] Patent application CN107748107A discloses a hydraulic testing bench for flanged valves, including a valve drive device and a support frame connected below the valve drive device. The support frame is a downward-opening portal frame, comprising a horizontal bar and two vertical bars. The valve drive device's pressure rod extends through the horizontal bar into the portal frame, with its lower end fixedly connected to the upper surface of an upper pressure plate. The lower end of the portal frame is connected to a base, on which a hydraulic jack is mounted. The hydraulic jack is connected to a lower pressure plate and a pressure pump, enabling the fixing and pressurization of the valve body during the pressurization process of the flanged valve, thereby completing the testing of the valve's strength and sealing performance. This solution, through structural optimization, improves the test bench's adaptability to flanged valves of different specifications and reduces equipment manufacturing costs to a certain extent. However, this scheme mainly targets the static strength and sealing performance testing of flanged valves, without considering the complex environmental factors faced by hydraulic valves during use, such as the scouring and impact of working media containing sand, mud, or other impurities on the valves. This makes it difficult for the test results to fully reflect the durability and reliability of the valves, resulting in insufficient test accuracy and a lack of testing combined with real-world environments. At the same time, in the water pressure sealing test, the identification of cracks generated during the test relies on visual observation or simple flaw detectors, which is difficult to effectively detect tiny cracks or minor leaks generated by the valves during pressure testing. This results in insufficient test accuracy and may lead to the omission of potential quality defects.

[0004] Therefore, there is an urgent need to develop a new type of hydraulic valve testing device that can simulate complex real working conditions, improve the ability to detect micro-defects, and has integrated functions, in order to solve the above-mentioned problems existing in the current technology. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the present invention provides a hydraulic valve test bench to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic valve test bench, comprising a workbench, on which a control component is fixedly connected, and an external testing mechanism is fixedly connected to the accommodating space of the workbench;

[0007] The external testing facilities include:

[0008] The power unit is fixedly connected inside the worktable, and its output end is rotatably connected to a movable screw that extends into the receiving space of the worktable.

[0009] The base plate is set within the accommodating space of the workbench and is fixedly connected to the workbench;

[0010] The guide rail is fixedly connected to the base plate and extends upwards;

[0011] The upper cover is disposed above the base plate and rotatably connected to the moving screw. When the power component drives the moving screw to rotate, the upper cover can move downward and cooperate with the base plate to form a test space.

[0012] The flushing assembly is used to spray flushing liquid into the test space formed by the upper cover and the base plate to simulate the impact environment on the hydraulic valve.

[0013] In a preferred embodiment of this application, the guide rail is inserted into the upper cover to restrict the direction of movement of the upper cover.

[0014] In a preferred embodiment of this application, the outer wall of the base plate is rotatably connected to the movable screw to avoid the rotation of the movable screw affecting the base plate.

[0015] In a preferred embodiment of this application, the flushing component includes:

[0016] The fan is fixedly connected to the outer wall of the cover, and its outlet is inserted into the top of the cover.

[0017] The suction pipe is fixedly connected to the water inlet of the blower;

[0018] The discharge pipe is fixedly connected to the side of the upper cover;

[0019] The waste bin, to which both the suction pipe and the discharge pipe are connected, is used to collect and circulate the mixture of impurities used for rinsing.

[0020] In a preferred embodiment of this application, the fan is fixedly connected to the outer wall of the top cover by a first bracket.

[0021] In a preferred embodiment of this application, the miscellaneous container is disposed on the side of the workbench and located at the bottom of the discharge pipe and the suction pipe. When the upper cover moves downward with the moving screw to cooperate with the base plate to form a test space, the suction pipe and the discharge pipe descend synchronously and extend into the miscellaneous container.

[0022] In a preferred embodiment of this application, the accommodating space of the workbench is further fixedly connected to a testing mechanism for positioning and fixing the hydraulic valve and for water pressure sealing testing.

[0023] In a preferred embodiment of this application, the testing mechanism includes a slide rail fixedly connected to the receiving space of the workbench. A slider is slidably connected to the outer wall of the slide rail, and a placement platform is fixedly connected to the top of the slider. Two fixing brackets are fixedly connected to the top of the placement platform, and bolts are threaded onto the outer walls of the fixing brackets. A guide screw is rotatably connected to the slide rail and threadedly connected to the slider. A rotating component is fixedly connected to one end of the guide screw. A display component is also fixedly connected to the top of the placement platform for real-time monitoring and intuitive presentation of the sealing status and potential leakage location of the hydraulic valve during the water pressure test. A water pressure test component is fixedly connected to the back of the workbench for performing a water pressure sealing test on the hydraulic valve.

[0024] In a preferred embodiment of this application, the hydrostatic test assembly includes a tortuous tube inserted into the back of the workbench. A connecting pipe is fixedly connected to the outer wall of the tortuous tube, which can be connected to a hydraulic valve. A one-way valve is also fixedly connected to the outer wall of the tortuous tube to prevent water backflow during the hydrostatic test.

[0025] In a preferred embodiment of this application, the display component includes a spotlight fixedly connected to the top of a placement platform. A second bracket is also fixedly connected to the top of the placement platform. A light-transmitting mirror is fixedly connected to the top of the second bracket. A black curtain is fixedly connected to the outer wall of the light-transmitting mirror to magnify and visually present the sealing status and potential crack locations of the hydraulic valve during the water pressure test.

[0026] This invention provides a hydraulic valve testing bench. It has the following beneficial effects:

[0027] 1. This hydraulic valve test bench, through the coordinated setup of the external testing mechanism and the test mechanism, can complete the external erosion impact test and water pressure sealing test of hydraulic valves on the same equipment, wherein:

[0028] External testing agencies used a fan to circulate and suck up a mixture of sand, gravel and water from the debris box to simulate the impact of impurities in a real environment.

[0029] The testing mechanism generates controllable water pressure by using the tortuous tube of the water pressure testing component in conjunction with the mobile placement platform;

[0030] This improves the testing accuracy of hydraulic valves.

[0031] 2. This hydraulic valve test bench is designed with a flushing component, in which both the suction pipe and the discharge pipe are connected to the debris box, forming a closed loop system. During the test, the impurity mixture is pumped into the upper cover space by a fan to impact the valve, and then flows back to the debris box for reuse, which significantly reduces the cost of test consumables.

[0032] 3. This hydraulic valve test bench uses mechanical extrusion water pressure in its test mechanism. The rotating component drives the guide screw to push the slider, causing the valve to squeeze the pre-filled water-filled tortuous pipe. It utilizes the incompressibility of water to generate high pressure, replacing the complex hydraulic pump system, reducing the risk of leakage and simplifying operation.

[0033] 4. This hydraulic valve test bench projects light onto the bottom of the valve through a spotlight via a display component. The light is magnified by a lens and projected onto a black screen. If the valve is subjected to pressure and develops microcracks, the change in the light path will create obvious abnormal light spots on the screen, enabling real-time visual identification of microcracks and improving the detection accuracy of the valve.

[0034] 5. In this hydraulic valve test bench, the guide rail is connected to the upper cover in the external testing mechanism to restrict its vertical movement trajectory and avoid skewing. In the testing mechanism, the slider and the slide rail cooperate to constrain the horizontal movement path of the placement platform, ensuring the alignment accuracy of the valve and the tortuous pipe. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the axial three-dimensional structure of the present invention;

[0036] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention viewed from below;

[0037] Figure 3 This is a schematic diagram of the three-dimensional structure of the back side of the present invention;

[0038] Figure 4 This is a partial structural diagram of the external testing mechanism of the present invention;

[0039] Figure 5 For the present invention Figure 1 Enlarged structural diagram of section A in the middle;

[0040] Figure 6 For the present invention Figure 2 Enlarged structural diagram of section B;

[0041] Figure 7 This is a partial structural diagram of the testing mechanism of the present invention;

[0042] Figure 8This is a partial structural diagram of the hydrostatic test assembly of the present invention.

[0043] In the diagram: 1. Workbench; 2. Control components; 3. External testing mechanism; 31. Power components; 32. Base plate; 33. Top cover; 34. Guide rail; 35. Moving screw; 36. Flushing assembly; 361. First support; 362. Fan; 363. Suction pipe; 364. Discharge pipe; 37. Miscellaneous storage box; 4. Testing mechanism; 41. Slide rail; 42. Slider; 43. Guide screw; 44. Rotating component; 45. Placement platform; 46. Fixing frame; 47. Bolt; 48. Water pressure testing assembly; 481. Connecting pipe; 482. Bend pipe; 483. One-way valve; 49. Display assembly; 491. Spotlight; 492. Transmitting mirror; 493. Black curtain; 494. Second support. Detailed Implementation

[0044] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0045] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0046] Example 1, please refer to Figures 1-6 The present invention provides a technical solution: a hydraulic valve test bench, including a workbench 1, a control component 2 fixedly connected to the outer wall of the workbench 1, and an external testing mechanism 3 fixedly connected to the accommodating space of the workbench 1;

[0047] The workbench 1 is set in the required position, and the control unit 2 can provide power to each device and control the start-up of each device;

[0048] External testing organization 3 includes:

[0049] Power component 31 is fixedly connected inside the worktable 1;

[0050] The base plate 32 is fixedly connected to the accommodating space of the workbench 1;

[0051] Guide rail 34 is fixedly connected to the top of base plate 32;

[0052] The top of the upper cover 33 and the top of the power component 31 are rotatably connected to a movable screw 35, and the top of the movable screw 35 is rotatably connected to the upper cover 33.

[0053] The flushing component 36 is fixedly connected to the outer wall of the top cover 33.

[0054] The hydraulic valve test bench disclosed in this application scientifically combines a power unit 31, a moving screw 35, a base plate 32, a guide rail 34, a top cover 33, and a flushing assembly 36 to form a complete integrated testing system. The power unit 31 is installed inside the workbench 1 and connected to the moving screw 35 via its output end, driving the rotation of the moving screw 35. The base plate 32 is firmly fixed to the operating plane of the workbench 1, serving as a valve placement platform. A vertically upward guide rail 34 is installed on its top, facilitating the precise sliding of the top cover 33 along a fixed path. The top cover 33 is installed above the base plate 32 and connected to the power unit 31 via the moving screw 35. Driven by the power unit 31, the moving screw 35 rotates and descends. The power unit 31 contains... A space is provided for the moving screw 35 to descend. When the moving screw 35 descends, it pulls the upper cover 33 down. The upper cover 33 can move downward along the guide rail 34 and form a closed space with the base plate 32 to ensure that the external environment does not affect the internal test. The flushing component 36 is installed on the outer wall of the upper cover 33 and can move with the upper cover 33. When the upper cover 33 and the base plate 32 are closed, the flushing component 36 is activated. The flushing component 36 uses a circulation system to spray liquid containing impurities onto the surface of the hydraulic valve to simulate the impurity impact process under real working conditions, ensuring that the test conditions are close to the actual application state. The entire structure is tightly fitted and easy to operate. The moving speed of the upper cover 33 and the working state of the flushing component 36 can be flexibly adjusted through the control component 2 to adapt to hydraulic valves of different specifications and test requirements.

[0055] The hydraulic valve testing bench disclosed in this application not only achieves a compact and functionally integrated testing system, but also effectively improves the reliability and applicability of the test. The sealed space formed by the closing of the upper cover 33 and the base plate 32 avoids external interference, ensuring the accuracy of the test data. Simultaneously, the flushing component 36 moves synchronously with the upper cover 33, ensuring that impurities always impact the effective position of the valve, realistically simulating the operating environment under complex working conditions, further enhancing the comprehensiveness and authenticity of the test. Furthermore, by adjusting the power output and flushing intensity through the control component 2, the testing requirements of hydraulic valves of different specifications can be met. The overall operation is simple and highly adaptable, effectively improving the efficiency and accuracy of hydraulic valve testing, and meeting the application requirements of modern hydraulic systems for high-reliability valve testing.

[0056] In the example of this application, the guide rail 34 is inserted into the upper cover 33 to guide the range of motion of the upper cover 33. In this example, four guide rails 34 are provided, arranged in parallel. The lower ends of the guide rails 34 are distributed at four azimuth angles on the upper end of the base plate 32, and the upper ends of the guide rails 34 are inserted into preset holes in the upper cover 33 and extend a certain distance beyond the top of the upper cover 33. This guides the upper cover 33 to achieve smooth vertical lifting and lowering along the guide rails 34, effectively avoiding tilting, shaking, or offset of the upper cover 33 during movement. This further improves the accuracy of the test space formation. The overall structure is compact and well-coordinated, ensuring the test bench has good stability and durability, and is easy to maintain and disassemble. The overall solution has a simple and reliable structure, clear functions, and greatly optimizes the testing process of hydraulic valves.

[0057] In the example of this application, the outer wall of the base plate 32 is rotatably connected to the movable screw 35, ensuring that the rotation of the movable screw 35 does not affect the base plate 32. In the hydraulic valve test bench described in this application, the connection structure between the base plate 32 and the movable screw 35 is optimized. For example, a high-strength bearing can be used as the rotating connection between the two. The outer ring of the bearing is securely installed at the corresponding position on the base plate 32, and the inner ring is tightly fitted with the outer wall of the movable screw 35, forming a reliable rotating connection structure. When the movable screw 35 rotates under the drive of the power component 31, the rotational force is effectively transmitted and isolated through the internal structure of the bearing, preventing lateral forces, vibrations, or impacts that may occur during rotation from directly acting on the base plate 32. This ensures the stability and parallelism of the base plate 32 throughout the entire testing process. This structural design is simple and reasonable, and easy to install. The bearing, as a key connecting component, combines good isolation effect and durability. The overall layout is compact and efficient, further improving the structural stability and testing reliability of the hydraulic valve test bench.

[0058] In the example of this application, the flushing assembly 36 includes a blower 362, which is fixedly connected to the outer wall of the upper cover 33. The inlet of the blower 362 is fixedly connected to a suction pipe 363, the other end of which is connected to a waste bin 37. The outlet of the blower 362 is inserted into the top of the upper cover 33. The side of the upper cover 33 is fixedly connected to a discharge pipe 364, the other end of which is connected to a waste bin 37. The waste bin 37 is used to collect and circulate the impurity mixture used for flushing. In the hydraulic valve test bench described in this application, the flushing component 36 has a scientific and reasonable structural design and complete functions. It is composed of a blower 362, a suction pipe 363, a discharge pipe 364, and a waste box 37. The blower 362 is firmly fixed to the outer wall of the upper cover 33. The outlet of the blower 362 is reliably connected to the top of the upper cover 33 through a plug-in structure to form a stable conveying channel. One end of the suction pipe 363 is fixedly connected to the inlet of the blower 362, and the other end can directly penetrate into the waste box 37 to ensure efficient suction of the mixed impurity liquid contained in the waste box 37. The waste box 37 pre-stores a simulated impurity liquid formed by the mixture of sand, soil, water, and other substances to realistically reproduce the actual working conditions of the hydraulic valve. The discharge pipe 364 is fixedly installed on the side wall of the upper cover 33, and the other end is connected to the waste box 37 to construct a complete impurity circulation path. When the flushing component 36 is working, the impurity liquid circulates repeatedly inside the system. The flushing process does not require an external water source or frequent replacement of the impurity liquid, saving resources and reducing costs.

[0059] Through the aforementioned closed-loop design, this hydraulic valve test bench significantly improves the realism, economy, and ease of operation of the testing process. First, the impurity mixture circulates within the closed system, avoiding waste and environmental pollution, reducing the cost of testing consumables, and conforming to the concept of energy conservation and environmental protection. Second, the waste bin 37 serves as a storage and recovery unit for the impurity liquid, ensuring a continuous supply of impurity liquid. The system does not require frequent addition of new liquid, ensuring efficient and continuous testing. The blower 362 provides stable and powerful power output, creating a strong and uniform flushing effect of the impurity liquid within the test space, realistically simulating the impact state of the hydraulic valve under harsh working conditions, and comprehensively testing the structural strength and sealing performance of the valve. In addition, the overall structure is compact, the connection is stable, the operation is convenient, and maintenance and cleaning are easy, effectively improving the stability and realism of the environmental simulation during the hydraulic valve testing process.

[0060] In the example of this application, the blower 362 is fixedly connected to the outer wall of the upper cover 33 by a first bracket 361. In the hydraulic valve test bench of this application, the blower 362 in the flushing assembly 36 is stably installed on the outer wall of the upper cover 33 by the first bracket 361. The first bracket 361 is made of high-strength material, which can effectively improve the connection strength and stability between the blower 362 and the upper cover 33. One end of the first bracket 361 is tightly fitted to the outer shell of the blower 362, and the other end is firmly fixed to the outer surface of the side wall of the upper cover 33 by means of threaded connection or welding, forming a stable and reliable support structure. The overall structure is simple and the installation position is reasonable, which effectively avoids the problem of position displacement or loosening of the blower 362 due to high-frequency operation or vibration impact during the flushing process, ensuring that the blower 362 always stays in the optimal working position, and improving the overall structural strength and reliability of the flushing assembly 36.

[0061] In the example of this application, the miscellaneous storage box 37 is fixedly connected to the side of the workbench 1, and the miscellaneous storage box 37 is located at the bottom of the discharge pipe 364 and the suction pipe 363.

[0062] The discharge pipe 364 is installed on the upper cover 33, so that the liquid entering the upper cover 33 can be discharged from the discharge pipe 364. The descent of the upper cover 33 will drive the suction pipe 363 down into the waste box 37. The waste box 37 is pre-filled with a suitable amount of mixed impurities such as sand, soil and water to simulate the impact on the hydraulic valve in reality. The blower 362 sucks the mixed impurities through the suction pipe 363 and then transports them to the upper cover 33. Finally, they are discharged from the discharge pipe 364 into the waste box 37 for recycling, simulating the environment in which the hydraulic valve is subjected to impact. This application optimizes the structural layout of the miscellaneous storage box 37, securing it firmly to the outer side wall of the workbench 1. It is precisely positioned directly below the discharge pipe 364 and the suction pipe 363, ensuring a precise and efficient connection between the storage box 37 and the testing system. During testing, the upper cover 33 descends vertically along the guide rail 34 under the drive of the power component 31. The suction pipe 363 and discharge pipe 364 descend together with the upper cover 33. Simultaneously, as the upper cover 33 and the base plate 32 close to form a sealed testing space, the suction pipe 363 is accurately inserted into the storage box. The impurity mixture inside the 37 is composed of sand, soil and water, which are fully mixed to realistically simulate a complex working environment. The blower 362 powerfully extracts the impurities into the upper cover 33 through the suction pipe 363 to conduct a multi-angle, full-coverage impact test on the hydraulic valve. After the test is completed, the impurity liquid flows smoothly back to the impurity box 37 through the discharge pipe 364, realizing efficient and closed-loop impurity recycling. The overall structure is compact and scientifically designed with precise connection positions to ensure that the testing process is efficient, continuous and realistic, avoids resource waste and improves the overall stability and reliability of the system.

[0063] Example 2, please refer toFigures 1-8 Based on Embodiment 1, the present invention provides a technical solution:

[0064] The workbench 1 also has a test mechanism 4 fixedly connected to its space for positioning and fixing hydraulic valves and for water pressure sealing tests.

[0065] In the example of this application, the test mechanism 4 includes a slide rail 41, which is fixedly connected to the receiving space of the workbench 1. A slider 42 is slidably connected to the outer wall of the slide rail 41. A placement platform 45 is fixedly connected to the top of the slider 42. Two fixing brackets 46 are fixedly connected to the top of the placement platform 45. Bolts 47 are threadedly connected to the outer wall of each fixing bracket 46. One end of a guide screw 43 is rotatably connected to the outer wall of the slide rail 41. The guide screw 43 is threadedly connected to the slider 42. A rotating component 44 is fixedly connected to the other end of the guide screw 43. A display component 49 is also fixedly connected to the top of the placement platform 45 for real-time monitoring and intuitive presentation of the sealing status and potential leakage location of the hydraulic valve during the water pressure test. A water pressure test component 48 is fixedly connected to the back of the workbench 1 for performing a water pressure sealing test on the hydraulic valve. In the hydraulic valve test bench described in this application, through a reasonable design of the test mechanism 4, the slide rail 41 is fixed within the accommodating space of the workbench 1 as a moving guide base. The slider 42 and the slide rail 41 have a tight structural fit and smooth sliding, ensuring that the placement platform 45 can be accurately positioned and move smoothly during the test. The surface of the placement platform 45 is flat and sturdy, and two fixing brackets 46 are installed on the top. The fixing brackets 46 are connected to the placement platform 45 by external bolts 47, which facilitates the adjustment of clamping force according to different hydraulic valve specifications, achieving stable and reliable multi-specification adaptation. The slide rail 41 is provided with a guide screw 43. The slide rail 41 is rotatably connected to the slide rail 41, and the slider 42 is threadedly connected at the same time. The overall structure is stable. With the rotation of the rotating component 44 at one end of the guide screw 43, the slider 42 and the placement platform 45 move along the slide rail 41. The operation is simple and the positioning is accurate. The top of the placement platform 45 is equipped with a display component 49, which can clearly display the sealing status of the hydraulic valve and possible minor leakage points in real time during the water pressure test. The water pressure test component 48 is fixed on the back of the workbench 1 and is connected to the hydraulic valve through the water source to form a real pressure test environment. The overall structure is compact, the function is highly integrated, the operation is convenient, and the adaptability is strong.

[0066] After testing the hydraulic valves by the external testing agency 3, the hydraulic valves are placed between the two fixed brackets 46, and then the bolts 47 are turned to fix the hydraulic valves.

[0067] The water pressure test assembly 48 includes a tortuous tube 482, which is inserted into the back of the workbench 1. A connecting tube 481 is fixedly connected to the outer wall of the tortuous tube 482, and a one-way valve 483 is also fixedly connected to the outer wall of the tortuous tube 482.

[0068] Connecting pipe 481 is connected to the hydraulic valve, and then the tortuous pipe 482 is connected to the water source, allowing water to enter the hydraulic valve. The one-way valve 483 is designed for one-way operation, preventing water from leaking out of the tortuous pipe 482 and the hydraulic valve. Rotating the rotating component 44 will drive the guide screw 43 to rotate, which in turn drives the slider 42 to move, causing the hydraulic valve to move towards the tortuous pipe 482. When the tortuous pipe 482 is squeezed, the water inside is squeezed. Utilizing the incompressible property of water, this squeezes the hydraulic valve, thus testing the hydraulic valve.

[0069] The slider 42 is mounted on the slide rail 41, which limits the range of movement of the placement platform 45.

[0070] The rotating component 44 can be replaced with an electric motor or other electrical component, and the start-up can be controlled by the control component 2.

[0071] Display component 49 includes spotlight 491, which is fixedly connected to the top of placement platform 45. A second bracket 494 is also fixedly connected to the top of placement platform 45. A light-transmitting mirror 492 is fixedly connected to the top of the second bracket 494, and a black curtain 493 is fixedly connected to the outer wall of the light-transmitting mirror 492.

[0072] When performing a water pressure test on a hydraulic valve, a spotlight 491 is located at the bottom of the valve and emits rays onto the valve. The light passes through the valve and shines onto a black screen 493 behind a light-transmitting mirror 492. If a gap is generated in the valve during the water pressure test, the gap can be easily observed through the black screen 493.

[0073] The hydraulic valve testing bench provided in this application significantly improves the accuracy and efficiency of hydraulic valve testing through structural optimization and functional integration. During testing, the operator places the hydraulic valve to be tested on top of the placement platform 45, and reliably clamps and fixes the hydraulic valve using the two-sided fixing brackets 46 and bolts 47, ensuring the stability and positional accuracy of the valve during the testing process. It is also compatible with various specifications of hydraulic valves, improving the equipment's versatility and ease of use. After starting the rotating component 44, the guide screw 43 rotates under the drive of the rotating component 44. Since the guide screw 43 is threadedly connected to the slider 42, the slider 42 moves smoothly forward along the slide rail 41. The placement platform 45 and the hydraulic valve move synchronously to the front end of the water pressure testing assembly 48. The operation is simplified and the positioning is accurate. The tortuous pipe 482 in the water pressure testing assembly 48 is connected to the hydraulic valve through the connecting pipe 481, and water is injected into the hydraulic valve through the one-way valve 483. Inside, a sealed testing environment is formed. The slider 42 moves forward continuously, causing the hydraulic valve to squeeze the tortuous tube 482. The incompressibility of water causes the internal pressure to rise rapidly, simulating the pressure state of the hydraulic valve under real working conditions, avoiding environmental pollution and test interference. At the same time, the spotlight 491 is turned on, projecting light onto the bottom of the hydraulic valve. After passing through the valve, the light is magnified by the light-transmitting lens 492 and finally projected onto the surface of the black curtain 493. If there are tiny cracks or leaks in the valve, the change in the light path will form abnormal light spots on the black curtain 493, which makes it easy for operators to observe in real time and accurately judge the valve sealing status and potential leakage points, improving the sensitivity of defect detection. The entire process is structurally coordinated, the operation is smooth, and the test data is intuitive and accurate.

[0074] The testing mechanism 4 described in this application, through the scientific cooperation of the slide rail 41, the slider 42 and the placement platform 45, ensures the precise positioning and stable fixation of the hydraulic valve during the testing process, avoiding the impact of deviation or loosening on the test results. The overall system has a compact structure, reasonable layout, high functional integration, real and reliable test results, and simple and efficient operation process, effectively improving the accuracy and reliability of hydraulic valve performance testing, and meeting the actual needs of high-standard sealing and structural strength testing under complex working conditions.

[0075] Example 3, please refer to Figures 1-8 The present invention provides another technical solution: a hydraulic valve test bench, including a workbench 1, a control component 2 fixedly connected to the outer wall of the workbench 1, and an external testing mechanism 3 fixedly connected to the accommodating space of the workbench 1;

[0076] The workbench 1 is set in the required position, and the control unit 2 can provide power to each device and control the start-up of each device;

[0077] External testing organization 3 includes:

[0078] Power component 31 is fixedly connected inside the worktable 1;

[0079] The base plate 32 is fixedly connected to the accommodating space of the workbench 1;

[0080] Guide rail 34 is fixedly connected to the top of base plate 32;

[0081] The top of the upper cover 33 and the top of the power component 31 are rotatably connected to a movable screw 35, and the top of the movable screw 35 is rotatably connected to the upper cover 33.

[0082] The flushing component 36 is fixedly connected to the outer wall of the top cover 33.

[0083] The guide rail 34 is inserted into the upper cover 33 and is used to guide the range of motion of the upper cover 33.

[0084] The outer wall of the base plate 32 is rotatably connected to the movable screw 35, so that the rotation of the movable screw 35 will not affect the base plate 32.

[0085] After testing the hydraulic valve in the test unit 4, the hydraulic valve is placed on the bottom plate 32. Then, the power unit 31 is started by controlling the control unit 2. When the power unit 31 is powered on, it will drive the moving screw 35 to rotate. The power unit 31 is provided with a space for the moving screw 35 to descend. When the moving screw 35 descends, it will pull the top cover 33 down. The top cover 33 is stuck on the bottom plate 32, thus forming a space between the top cover 33 and the bottom plate 32. The guide rail 34 will restrict the movement direction of the top cover 33.

[0086] The flushing assembly 36 includes a blower 362, which is fixedly connected to the outer wall of the upper cover 33. The inlet of the blower 362 is fixedly connected to a suction pipe 363, and the outlet of the blower 362 is inserted into the top of the upper cover 33. The side of the upper cover 33 is fixedly connected to a discharge pipe 364.

[0087] The fan 362 is fixedly connected to the outer wall of the cover 33 by a first bracket 361.

[0088] A miscellaneous waste box 37 is fixedly connected to the side of the workbench 1. The miscellaneous waste box 37 is located at the bottom of the discharge pipe 364 and the suction pipe 363.

[0089] The discharge pipe 364 is installed on the upper cover 33, so that the liquid entering the upper cover 33 can be discharged from the discharge pipe 364. The descent of the upper cover 33 will drive the suction pipe 363 down into the waste box 37. The waste box 37 is pre-filled with a suitable amount of mixed impurities such as sand, soil and water to simulate the impact on the hydraulic valve in reality. The blower 362 sucks the mixed impurities through the suction pipe 363 and then transports them to the upper cover 33. Finally, they are discharged from the discharge pipe 364 into the waste box 37 for recycling, simulating the environment in which the hydraulic valve is subjected to impact.

[0090] The testing mechanism 4 is also fixedly connected within the accommodating space of the workbench 1.

[0091] The test mechanism 4 includes a slide rail 41, which is fixedly connected to the receiving space of the workbench 1. A slider 42 is slidably connected to the outer wall of the slide rail 41. A placement platform 45 is fixedly connected to the top of the slider 42. Two fixed brackets 46 are fixedly connected to the top of the placement platform 45. Bolts 47 are threadedly connected to the outer wall of each fixed bracket 46. One end of a guide screw 43 is rotatably connected to the outer wall of the slide rail 41. The guide screw 43 is threadedly connected to the slider 42. A rotating component 44 is fixedly connected to the other end of the guide screw 43. A display component 49 is also fixedly connected to the top of the placement platform 45. A water pressure test component 48 is fixedly connected to the back of the workbench 1.

[0092] In this embodiment, the hydraulic valve is first tested using test mechanism 4. The water pressure is tested first, and then the impact is tested to simulate the effect of the valve under different environments.

[0093] Place the hydraulic valve between the two mounting brackets 46, and then rotate the bolts 47 to secure the hydraulic valve.

[0094] The water pressure test assembly 48 includes a tortuous tube 482, which is inserted into the back of the workbench 1. A connecting tube 481 is fixedly connected to the outer wall of the tortuous tube 482, and a one-way valve 483 is also fixedly connected to the outer wall of the tortuous tube 482.

[0095] Connecting pipe 481 is connected to the hydraulic valve, and then the tortuous pipe 482 is connected to the water source, allowing water to enter the hydraulic valve. The one-way valve 483 is designed for one-way operation, preventing water from leaking out of the tortuous pipe 482 and the hydraulic valve. Rotating the rotating component 44 will drive the guide screw 43 to rotate, which in turn drives the slider 42 to move, causing the hydraulic valve to move towards the tortuous pipe 482. When the tortuous pipe 482 is squeezed, the water inside is squeezed. Utilizing the incompressible property of water, this squeezes the hydraulic valve, thus testing the hydraulic valve.

[0096] The slider 42 is mounted on the slide rail 41, which limits the range of movement of the placement platform 45.

[0097] The rotating component 44 can be replaced with an electric motor or other electrical component, and the start-up can be controlled by the control component 2.

[0098] Display component 49 includes spotlight 491, which is fixedly connected to the top of placement platform 45. A second bracket 494 is also fixedly connected to the top of placement platform 45. A light-transmitting mirror 492 is fixedly connected to the top of the second bracket 494, and a black curtain 493 is fixedly connected to the outer wall of the light-transmitting mirror 492.

[0099] When performing a water pressure test on a hydraulic valve, a spotlight 491 is located at the bottom of the valve and emits rays onto the valve. The light passes through the valve and shines onto a black screen 493 behind a light-transmitting mirror 492. If a gap is generated in the valve during the water pressure test, the gap can be easily observed through the black screen 493.

[0100] The hydraulic valve test bench disclosed in this application, through the integrated design of external test mechanism 3 and test mechanism 4, enables hydraulic valves to continuously complete simulated scouring tests and water pressure sealing tests on the same equipment. The overall structure is compact and highly integrated. First, external test mechanism 3 drives the moving screw 35 through power component 31 to drive the upper cover 33 to descend smoothly along guide rail 34, forming a closed test space with the base plate 32, effectively avoiding the leakage of impurities or environmental interference during the test. Scouring component 36 circulates mixed impurities through fan 362, suction pipe 363 and discharge pipe 364 to simulate the impact of complex working conditions such as sand and mud on hydraulic valves, improving the realism and comprehensiveness of the test environment. The debris box 37 and the suction system form a closed loop, reducing impurity consumption, saving test costs, and avoiding environmental pollution. The test mechanism 4 has a reasonable structure, with slide rail 41 and slider 42... To ensure the stable movement of the placement platform 45, the fixing frame 46 and bolts 47 provide reliable clamping force, ensuring precise positioning of the hydraulic valve. The water pressure test component 48 forms a sealed water pressure test environment through the tortuous pipe 482, connecting pipe 481 and check valve 483, utilizing the incompressibility of water to efficiently simulate internal cavity pressure. The structure is simple and easy to operate, avoiding the complexity and leakage risks of traditional hydraulic pump systems. The display component 49, through the combination design of spotlight 491, light-transmitting mirror 492 and black curtain 493, clearly presents the sealing status and potential crack location of the hydraulic valve under water pressure in real time, improving the detection sensitivity of minor defects. The overall structure is compact and reasonable, and the operation process is efficient and convenient, which not only improves the comprehensiveness and reliability of hydraulic valve testing, but also reduces testing costs and operation difficulty, ensuring that the test results are true and valid, and meeting the performance testing needs of hydraulic valves under complex environments and high-pressure conditions.

[0101] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A hydraulic valve testing bench, comprising a workbench (1), wherein a control component (2) is fixedly connected to the workbench (1), characterized in that: The workbench (1) has an external testing mechanism (3) fixedly connected to its accommodating space. The external testing organization (3) includes: The power unit (31) is fixedly connected inside the workbench (1), and its output end is rotatably connected to a moving screw (35) that extends into the accommodating space of the workbench (1). The base plate (32) is set in the accommodating space of the workbench (1) and fixedly connected to the workbench (1); The guide rail (34) is fixedly connected to the base plate (32) and extends upward; The upper cover (33) is located above the base plate (32) and is rotatably connected to the moving screw (35). When the power component (31) drives the moving screw (35) to rotate, the upper cover (33) can move downward and cooperate with the base plate (32) to form a test space. A flushing assembly (36) is used to spray flushing liquid into the test space formed by the upper cover (33) and the base plate (32) to simulate the impact environment on the hydraulic valve. The guide rail (34) is inserted into the upper cover (33) to limit the movement direction of the upper cover (33). The outer wall of the base plate (32) is rotatably connected to the moving screw (35) to avoid the rotation of the moving screw (35) affecting the base plate (32). The flushing assembly (36) includes: The fan (362) is fixedly connected to the outer wall of the cover (33), and its outlet is inserted into the top of the cover (33); The suction pipe (363) is fixedly connected to the water inlet of the blower (362); The discharge pipe (364) is fixedly connected to the side of the upper cover (33); The waste box (37) is connected to the suction pipe (363) and the discharge pipe (364) for collecting and circulating storage of impurity mixture for rinsing. The fan (362) is fixedly connected to the outer wall of the cover (33) with a first bracket (361). The waste box (37) is set on the side of the workbench (1) and located at the bottom of the discharge pipe (364) and the suction pipe (363). When the cover (33) moves downward with the moving screw (35) and cooperates with the base plate (32) to form a test space, the suction pipe (363) and the discharge pipe (364) descend synchronously and extend into the waste box (37).

2. The hydraulic valve test bench according to claim 1, characterized in that: The workbench (1) also has a test mechanism (4) fixedly connected to its accommodating space, which is used to position and fix the hydraulic valve and test its water pressure sealing performance.

3. A hydraulic valve testing bench according to claim 2, characterized in that: The test mechanism (4) includes a slide rail (41), which is fixedly connected to the accommodating space of the workbench (1). A slider (42) is slidably connected to the outer wall of the slide rail (41). A placement platform (45) is fixedly connected to the top of the slider (42). Two fixing brackets (46) are fixedly connected to the top of the placement platform (45). Bolts (47) are threadedly connected to the outer wall of the fixing brackets (46). A guide screw (43) is rotatably connected to the slide rail (41). The guide screw (43) is threadedly connected to the slider (42). A rotating component (44) is fixedly connected to one end of the guide screw (43). A display component (49) is also fixedly connected to the top of the placement platform (45) for real-time monitoring and intuitive presentation of the sealing status and potential leakage location of the hydraulic valve during the water pressure test. A water pressure test component (48) is fixedly connected to the back of the workbench (1) for water pressure sealing test of the hydraulic valve.

4. A hydraulic valve testing bench according to claim 3, characterized in that: The water pressure test assembly (48) includes a tortuous tube (482) which is inserted into the back of the workbench (1). A connecting tube (481) is fixedly connected to the outer wall of the tortuous tube (482). The connecting tube (481) can be connected to a hydraulic valve. A one-way valve (483) is also fixedly connected to the outer wall of the tortuous tube (482) to prevent water backflow during the water pressure test.

5. A hydraulic valve testing bench according to claim 4, characterized in that: The display component (49) includes a spotlight (491) which is fixedly connected to the top of the placement platform (45). The top of the placement platform (45) is also fixedly connected to a second bracket (494). The top of the second bracket (494) is fixedly connected to a light-transmitting mirror (492). The outer wall of the light-transmitting mirror (492) is fixedly connected to a black curtain (493) for magnifying and visually presenting the sealing status and potential crack locations of the hydraulic valve during the water pressure test.

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