A hydraulic valve tester

Abstract

The utility model provides a kind of hydraulic valve testing machine, belong to hydraulic valve test technical field.The testing machine includes test table, water storage tank, valve body fixing mechanism, protective shell and turnover mechanism.Water storage tank is located below test table;Valve body fixing mechanism is equipped with two groups, respectively first fixed mechanism and second fixed mechanism, first fixed mechanism is fixedly arranged on test table, and second fixed mechanism is configured to be driven relative to first fixed mechanism to move;Valve body fixing mechanism includes multiple groups of synchronous movement fixed clamping plate;Protective shell is located on test table, and valve body fixing mechanism is located in protective shell, and the top of protective shell is provided with opening;Turnover mechanism, located on protective shell, cover plate is connected on turnover mechanism, and cover plate is overturned relative to the top of protective shell by turnover mechanism.The utility model specifically provides a kind of hydraulic valve testing machine, which is convenient to disassemble and fix hydraulic valve, and has test protection function.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic valve testing technology, specifically referring to a hydraulic valve testing machine. Background Technology

[0002] As a core component controlling the flow direction, pressure, and flow rate of hydraulic oil, the airtightness of hydraulic valves directly determines the operational stability, efficiency, and safety performance of the entire hydraulic system. Accurate and efficient airtightness testing of hydraulic valves is a crucial process in the production and maintenance of hydraulic systems.

[0003] Existing testing machines involve complex and cumbersome procedures for fixing and disassembling hydraulic valve bodies. Some equipment even requires specialized tools to complete multiple steps such as bolt tightening and clip locking, resulting in excessively long preparation cycles for each test and severely reducing the overall testing efficiency of hydraulic valves. Furthermore, existing hydraulic valve airtightness testing equipment generally lacks effective protective structures. During testing, some hydraulic valves under test may rupture under pressure due to aging, internal stress concentration, or prior damage. The high-pressure water inside the ruptured valve body will spray directly outwards, posing a significant safety hazard. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, the purpose of this utility model is to provide a hydraulic valve testing machine to at least partially solve the problems mentioned in the background art.

[0005] The technical solution adopted by this utility model is as follows: This utility model proposes a hydraulic valve testing machine, comprising:

[0006] A test bench is provided with a water filter tank, and a first filter screen is provided in the water filter tank.

[0007] A water storage tank is located below the test platform. The water storage tank is equipped with a partition, with a clean water chamber and a return water chamber on both sides of the partition. A water passage groove is provided at the lower end of the partition, and a second filter screen is provided in the water passage groove. The water passage groove is located above the return water chamber.

[0008] Two sets of valve body fixing mechanisms, namely a first fixing mechanism and a second fixing mechanism, are provided. The first fixing mechanism is fixedly mounted on the test bench, and the second fixing mechanism is configured to move relative to the first fixing mechanism under drive. The valve body fixing mechanism includes multiple sets of synchronously moving fixing clamps.

[0009] A protective shell is provided on the test bench, the valve body fixing mechanism is located inside the protective shell, and the top of the protective shell is set as an opening;

[0010] A flipping mechanism is provided on the protective shell, and a cover plate is connected to the flipping mechanism. The cover plate is flipped relative to the top of the protective shell by the flipping mechanism.

[0011] Furthermore, the flipping mechanism includes a flipping motor and two sets of symmetrically arranged flipping components. Each flipping component includes a drive shaft and a flipping shaft. The drive shaft is rotatably mounted on the side wall of the protective shell. A drive gear is fixedly mounted on the drive shaft. The drive gears of the two sets of flipping components mesh. One set of the drive shafts of the flipping components is connected to the output shaft of the flipping motor. The flipping shaft is rotatably mounted on the protective shell. Sprockets are correspondingly mounted on the flipping shaft and the drive shaft. The two sets of sprockets are driven by chain meshing. A mounting seat is provided on the cover plate. The mounting seat is connected to the flipping shaft.

[0012] Furthermore, the valve body fixing mechanism also includes a support base, on which a connecting cylinder is provided. A hollow insert is fixed inside the connecting cylinder. A fixing plate is provided on the connecting cylinder. A drive shaft is rotatably provided on the top wall of the fixing plate. A drive bevel gear is fixed on the drive shaft. A fixing cavity is provided inside the fixing plate. Multiple sets of fixing components are provided inside the fixing cavity. One set of fixing components meshes with the drive bevel gear for transmission. Adjacent sets of fixing components are connected by belt transmission.

[0013] Furthermore, the fixing assembly includes a fixed shaft, a drive disk, and a drive plate. The fixed shaft is rotatably disposed within the fixed cavity. The drive disk is disposed on the fixed shaft. A drive column is eccentrically disposed on the drive disk. One end of the drive plate has a drive groove. The other end of the drive plate is slidably disposed on the side wall of the drive cavity and connected to the fixed clamping plate. The drive column is engaged and slidably disposed within the drive groove. A driven bevel gear is disposed on the fixed shaft of one set of the fixing assemblies. The driven bevel gear meshes with the driving bevel gear. Adjacent sets of the fixing shafts are connected by belt drive.

[0014] Furthermore, the fixed cavity is provided with multiple sets of transmission shafts, and each fixed shaft and adjacent transmission shaft are provided with pulleys. The two adjacent sets of pulleys are connected by belt drive.

[0015] Furthermore, the protective shell is equipped with a water pump, which is connected to the plug of the first fixing mechanism through an inlet pipe. The plug of the second fixing mechanism is connected to the return water chamber through an outlet pipe. The part of the outlet pipe inside the protective shell is a flexible telescopic water pipe, and the part of the outlet pipe outside the protective shell is equipped with a pressure gauge and a control valve.

[0016] Furthermore, the upper surface of the test platform is configured with an inverted trapezoidal structure.

[0017] Furthermore, a telescopic cylinder is provided on the side wall of the protective shell, and the support seat of the second fixing mechanism is connected to the free end of the telescopic cylinder.

[0018] Furthermore, an observation window is provided on the side wall of the protective shell.

[0019] The technical solution provided by this utility model has the following beneficial effects:

[0020] (1) The two ends of the hydraulic valve are fixed by the cooperation of two sets of valve body fixing mechanisms, and the hydraulic valve can be conveniently fixed and disassembled by multiple sets of synchronously moving fixing clamps.

[0021] (2) The hydraulic valve testing process is protected by the protective shell. The position of the cover plate relative to the top opening of the protective shell can be adjusted by the flipping mechanism. This not only protects the testing process with the protective shell, but also facilitates the fixing and disassembly of the hydraulic valve. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a hydraulic valve testing machine from the front view, as proposed in an embodiment of this utility model.

[0023] Figure 2 This is a rear-view structural diagram of a hydraulic valve testing machine according to an embodiment of the present invention.

[0024] Figure 3 This is a rear-view cross-sectional structural diagram of a hydraulic valve testing machine according to an embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram of the tilting mechanism of a hydraulic valve testing machine according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the connection structure between the fixed shaft and the transmission shaft of a hydraulic valve testing machine according to an embodiment of the present invention.

[0027] Figure 6 This is a schematic diagram of the structure of a fixing component of a hydraulic valve testing machine according to an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram showing the positional structure of two sets of valve body fixing mechanisms for a hydraulic valve testing machine according to an embodiment of this utility model.

[0029] The components include: 1. Test platform; 2. First filter screen; 3. Water storage tank; 4. Partition plate; 5. Second filter screen; 6. First fixing mechanism; 7. Second fixing mechanism; 8. Fixing clamp; 9. Protective shell; 10. Tilting mechanism; 11. Cover plate; 12. Tilting motor; 13. Drive shaft; 14. Tilting shaft; 15. Drive gear; 16. Chain; 17. Mounting base; 18. Support base; 19. Connecting cylinder; 20. Insert; 21. Fixing plate; 22. Drive shaft; 23. Drive bevel gear; 24. Fixing cavity; 25. Belt; 26. Fixing shaft; 27. Drive disc; 28. Drive plate; 29. ​​Drive column; 30. Drive groove; 31. Driven bevel gear; 32. Transmission shaft; 33. Water pump; 34. Inlet pipe; 35. Outlet pipe; 36. Telescopic cylinder; 37. Observation window.

[0030] The accompanying drawings are provided to further understand the embodiments and form part of the specification. They are used together with the embodiments for explanation and do not constitute a limitation on the embodiments. Detailed Implementation

[0031] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection.

[0032] In the description of the embodiments, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments.

[0033] See Figures 1-3In this embodiment, the present invention provides a hydraulic valve testing machine, including a test bench 1, a water storage tank 3, a valve body fixing mechanism, a protective shell 9, and a flipping mechanism 10; the test bench 1 is provided with a water filter tank, and a first filter screen 2 is provided in the water filter tank; the water storage tank 3 is located below the test bench 1, and a partition 4 is provided in the water storage tank 3, with a clean water chamber and a return water chamber on both sides of the partition 4, and a water passage groove is provided at the lower end of the partition 4, with a second filter screen 5 provided in the water passage groove, and the water filter groove is located above the return water chamber; the valve body fixing mechanism is provided in two sets, namely a first fixing mechanism 6 and a second fixing mechanism 7, the first fixing mechanism 6 is fixedly mounted on the test bench 1, and the second fixing mechanism 7 is configured to be driven to move relative to the first fixing mechanism 6, so as to realize the adjustment of the distance between the first fixing mechanism 6 and the second fixing mechanism 7; The valve body fixing mechanism includes multiple sets of synchronously moving fixing clamps 8. The hydraulic valve can be quickly fixed and disassembled by driving the synchronous movement of multiple sets of fixing clamps 8. The protective shell 9 is set on the test bench 1, and the valve body fixing mechanism is located inside the protective shell 9. During the valve body test, the protective shell 9 provides protection. The top of the protective shell 9 is open. The flipping mechanism 10 is set on the protective shell 9. A cover plate 11 is connected to the flipping mechanism 10. The cover plate 11 is flipped relative to the top of the protective shell 9 by the flipping mechanism 10. When the cover plate 11 is driven by the flipping mechanism 10 to move away from the top of the protective shell 9, the hydraulic valve body can be inserted and fixed through the opening at the top of the protective shell 9. When the cover plate 11 is driven by the flipping mechanism 10 to cover the top of the protective shell 9, the cover plate 11 cooperates with the protective shell 9 to protect the valve body during the test.

[0034] See Figure 1 , Figure 2 and Figure 4 In this embodiment, the flipping mechanism 10 includes a flipping motor 12 and two sets of symmetrically arranged flipping components. Each flipping component includes a drive shaft 13 and a flipping shaft 14. The drive shaft 13 is rotatably mounted on the side wall of the protective shell 9. A drive gear 15 is fixedly mounted on the drive shaft 13. The drive gears 15 of the two sets of flipping components mesh. The drive shaft 13 of one set of flipping components is connected to the output shaft of the flipping motor 12. Through the meshing of the two sets of drive gears 15, the flipping motor 12 drives the drive shafts 13 of the two sets of flipping components to rotate in opposite directions. The flipping shaft 14 is rotatably mounted on the protective shell 9. Sprockets are correspondingly mounted on the flipping shaft 14 and the drive shaft 13. The two sets of sprockets are meshed and driven by a chain 16. A mounting seat 17 is provided on the cover plate 11. The mounting seat 17 is connected to the flipping shaft 14.

[0035] In practical use, the drive motor 12 drives the drive shaft 13 connected to it to rotate. Through the meshing of two sets of drive gears 15, the two sets of drive shafts 13 rotate synchronously in opposite directions. Through the transmission of the chain 16, the two sets of flip shafts 14 rotate synchronously with the drive shafts 13 connected to them. The flip shafts 14 drive the cover plate 11 to flip through the mounting base 17, adjusting the opening and closing state of the cover plate 11 relative to the top opening of the protective shell 9.

[0036] See Figure 3 , Figure 5 and Figure 6 In this embodiment, the valve body fixing mechanism also includes a support base 18, a connecting cylinder 19 is provided on the support base 18, a hollow insert 20 is fixedly provided inside the connecting cylinder 19, a fixing plate 21 is provided on the connecting cylinder 19, a drive shaft 22 is rotatably provided on the top wall of the fixing plate 21, a drive bevel gear 23 is fixedly provided on the drive shaft 22, a fixing cavity 24 is provided inside the fixing plate 21, and multiple sets of fixing components are provided inside the fixing cavity 24. One set of fixing components meshes with the drive bevel gear 23 for transmission, and adjacent sets of fixing components are connected by a belt 25 for transmission.

[0037] See Figure 6 In this embodiment, the fixing assembly includes a fixing shaft 26, a driving disk 27, and a driving plate 28. The fixing shaft 26 is rotatably disposed in the fixing cavity 24. The driving disk 27 is disposed on the fixing shaft 26. A driving column 29 is eccentrically disposed on the driving disk 27. A driving groove 30 is opened at one end of the driving plate 28. The other end of the driving plate 28 is slidably disposed on the side wall of the driving cavity and connected to the fixing clamp 8. The driving column 29 is engaged and slidably disposed in the driving groove 30. A driven bevel gear 31 is provided on the fixing shaft 26 of a set of fixing assemblies. The driven bevel gear 31 meshes with the driving bevel gear 23. Adjacent sets of fixing shafts 26 are connected by a belt 25.

[0038] See Figure 5 and Figure 6 In this embodiment, the fixed cavity 24 is provided with multiple sets of transmission shafts 32, and the fixed shaft 26 and the adjacent transmission shaft 32 are respectively provided with pulleys. The two adjacent sets of pulleys are connected by belts 25. Through the transmission of the transmission shafts 32, the belts 25 between the multiple sets of fixed components fixed shafts 26 are driven.

[0039] In practical use, the inlet end of the hydraulic valve is first installed on the first fixed mechanism 6. Specifically, the inlet end of the hydraulic valve is passed through multiple sets of fixed clamping plates 8 and installed inside the connecting cylinder 19, with the insert 20 inserted into the inlet end of the hydraulic valve. The drive shaft 22 is rotated, driving the drive bevel gear 23 to rotate. The meshing transmission between the drive bevel gear 23 and the driven bevel gear 31 drives a set of fixed shafts 26 to rotate. Furthermore, through the transmission of multiple sets of drive shafts 32 and multiple sets of belts 25, the multiple sets of fixed shafts 26 are driven to rotate synchronously. The fixed shafts 26 drive the drive disc 27 to rotate, which in turn drives the drive column 29 to rotate. The drive column 29 slides along the drive groove 30, thereby applying force to the drive plate 28, pushing it to slide. The drive plate 28 then moves the fixed clamping plates 8. The multiple sets of fixed clamping plates 8 cooperate to clamp and fix the inlet end of the hydraulic valve from multiple directions. The second fixing mechanism 7 is then driven to move towards the outlet end of the hydraulic valve until the outlet end of the hydraulic valve passes through the multiple sets of fixing plates 8 and is installed in the connecting cylinder 19, and the insert 20 is inserted into the outlet end of the hydraulic valve. Next, the drive shaft 22 of the second fixing mechanism 7 is rotated, and the outlet end of the hydraulic valve is clamped and fixed by the cooperation of the multiple sets of fixing plates 8. Through the above operations, the quick fixing of the hydraulic valve is completed.

[0040] See Figure 3 and Figure 4 In this embodiment, a water pump 33 is provided on the protective shell 9. The water pump 33 is connected to the plug 20 of the first fixing mechanism 6 through the water inlet pipe 34. A water outlet pipe 35 is connected between the plug 20 of the second fixing mechanism 7 and the return water chamber. The part of the water outlet pipe 35 inside the protective shell 9 is a flexible telescopic water pipe. The flexible telescopic water pipe is adapted to the position movement of the second fixing mechanism 7. A pressure gauge is provided on the part of the water outlet pipe 35 outside the protective shell 9. A control valve is provided on the water outlet pipe 35.

[0041] In practical use, water from the clean water chamber is pumped to the plug 20 via pump 33 and injected into the hydraulic valve for airtightness testing. After the test is completed, the control valve on the outlet pipe 35 is opened to discharge the test water into the return water chamber, where it is filtered by the second filter 5 and returned to the clean water chamber. If the valve body ruptures during the test, the resulting water will flow back into the return water chamber through the first filter.

[0042] It is understood that the pressurization device and pressurization operation in the testing process are existing technologies and do not need to be described in detail in this embodiment.

[0043] See Figure 3 In this embodiment, the upper surface of the test platform 1 is set with an inverted trapezoidal structure, which can improve the rapid recovery of water jets sprayed inside the protective shell 9.

[0044] See Figure 7In this embodiment, a telescopic cylinder 36 is provided on the side wall of the protective shell 9. The support seat 18 of the second fixing mechanism 7 is connected to the free end of the telescopic cylinder 36. The telescopic cylinder 36 can drive the second fixing mechanism 7 to move relative to the first fixing mechanism 6, thereby adjusting the distance between the first fixing mechanism 6 and the second fixing mechanism 7.

[0045] See Figure 1 and Figure 7 In this embodiment, an observation window 37 is provided on the side wall of the protective shell 9, which facilitates the observation of the valve body testing process.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] The embodiments have been described above, and such description is not restrictive. The figures shown are only one embodiment, and the actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit, such design should fall within the scope of protection.

Claims

1. A hydraulic valve testing machine, characterized in that, include: Test bench (1) is provided with a water filter tank, and a first filter screen (2) is provided in the water filter tank. A water storage tank (3) is located below the test bench (1). The water storage tank (3) is equipped with a partition (4). The two sides of the partition (4) are a clean water chamber and a return water chamber, respectively. A water passage groove is provided at the lower end of the partition (4). A second filter screen (5) is provided in the water passage groove. The water passage groove is located above the return water chamber. Two sets of valve body fixing mechanisms, namely a first fixing mechanism (6) and a second fixing mechanism (7), are provided. The first fixing mechanism (6) is fixed on the test bench (1), and the second fixing mechanism (7) is configured to be driven to move relative to the first fixing mechanism (6). The valve body fixing mechanism includes multiple sets of synchronously moving fixing clamps (8). A protective shell (9) is provided on the test bench (1), and the valve body fixing mechanism is located inside the protective shell (9). The top of the protective shell (9) is set with an opening. A flipping mechanism (10) is provided on the protective shell (9), and a cover plate (11) is connected to the flipping mechanism (10). The cover plate (11) is flipped relative to the top of the protective shell (9) by the flipping mechanism (10).

2. The hydraulic valve testing machine according to claim 1, characterized in that: The flipping mechanism (10) includes a flipping motor (12) and two sets of symmetrically arranged flipping components. The flipping components include a drive shaft (13) and a flipping shaft (14). The drive shaft (13) is rotatably mounted on the side wall of the protective shell (9). A drive gear (15) is fixedly mounted on the drive shaft (13). The drive gears (15) of the two sets of flipping components mesh. The drive shaft (13) of one set of flipping components is connected to the output shaft of the flipping motor (12). The flipping shaft (14) is rotatably mounted on the protective shell (9). Sprockets are correspondingly mounted on the flipping shaft (14) and the drive shaft (13). The two sets of sprockets are meshed and driven by a chain (16). A mounting seat (17) is provided on the cover plate (11). The mounting seat (17) is connected to the flipping shaft (14).

3. The hydraulic valve testing machine according to claim 2, characterized in that: The valve body fixing mechanism also includes a support base (18), a connecting cylinder (19) is provided on the support base (18), a hollow insert (20) is fixed inside the connecting cylinder (19), a fixing plate (21) is provided on the connecting cylinder (19), a drive shaft (22) is rotatably provided on the top wall of the fixing plate (21), a drive bevel gear (23) is fixed on the drive shaft (22), a fixing cavity (24) is provided inside the fixing plate (21), and multiple sets of fixing components are provided inside the fixing cavity (24). One set of fixing components meshes with the drive bevel gear (23) for transmission, and two adjacent sets of fixing components are connected by a belt (25) for transmission.

4. The hydraulic valve testing machine according to claim 3, characterized in that: The fixing assembly includes a fixing shaft (26), a drive disk (27), and a drive plate (28). The fixing shaft (26) is rotatably disposed in the fixing cavity (24). The drive disk (27) is disposed on the fixing shaft (26). The drive disk (27) is eccentrically provided with a drive column (29). One end of the drive plate (28) is provided with a drive groove (30). The other end of the drive plate (28) is slidably disposed on the side wall of the drive cavity and connected to the fixing clamp (8). The drive column (29) is engaged and slidably disposed in the drive groove (30). A set of fixing shafts (26) of the fixing assembly is provided with a driven bevel gear (31). The driven bevel gear (31) meshes with the driving bevel gear (23). Two adjacent sets of fixing shafts (26) are connected by a belt (25).

5. The hydraulic valve testing machine according to claim 1, characterized in that: The protective shell (9) is equipped with a water pump (33), which is connected to the plug (20) of the first fixing mechanism (6) through the water inlet pipe (34). The plug (20) of the second fixing mechanism (7) is connected to the water outlet pipe (35) between it and the water return chamber. The part of the water outlet pipe (35) inside the protective shell (9) is a flexible telescopic water pipe. The part of the water outlet pipe (35) outside the protective shell (9) is equipped with a pressure gauge and a control valve.

6. The hydraulic valve testing machine according to claim 1, characterized in that: The upper surface of the test bench (1) is set in an inverted trapezoidal structure.

7. The hydraulic valve testing machine according to claim 1, characterized in that: An observation window (37) is provided on the side wall of the protective shell (9).

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