Durability testing device for oil inlet proportional valve in diesel oil common rail system

Abstract

The utility model relates to the technical field of testing devices, and discloses a durability testing device for an oil inlet proportional valve in a diesel oil common rail system, which comprises an electrical module, a control module, a hydraulic assembly, a detection assembly, a frame assembly, a shell assembly and a moving assembly, through integration of the electrical module and the control module, automation of testing is achieved, a user only needs to input testing parameters on a displayer, the system can automatically complete the circulation, conveying and testing processes of hydraulic oil, manual intervention is reduced, the testing accuracy and consistency are improved, the device allows a plurality of proportional valve bodies to be installed and tested at the same time, and the testing efficiency is improved. The test efficiency is greatly improved, the control module can obtain and display durability test data of the proportional valve main body in real time, and possible problems of the proportional valve main body in the long-term use process can be found in time, so that improvement and optimization are carried out in the product development stage, and the product quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of testing device technology, specifically a durability testing device for the fuel inlet proportional valve in a diesel common rail system. Background Technology

[0002] A diesel common rail system is a closed-loop fuel supply system that separates the generation of injection pressure from the fuel tank and the injection process. The system consists of a fuel tank, a gear pump, a fuel-water separator, a gear pump, a diesel filter, a high-pressure pump, a common rail, an injector, and sensors and an ECU.

[0003] A proportional valve, also known as an electro-hydraulic proportional valve, is a hydraulic valve that converts an input electrical signal into force or displacement proportionally, thereby continuously controlling parameters such as pressure and flow rate. Proportional valves are widely used in various fields. Although their structure is simple, high requirements are placed on their reliability and durability. Traditional durability testing methods for inlet proportional valves often rely on manual operation, which is cumbersome, inefficient, and susceptible to human error, leading to inaccurate results. Furthermore, traditional testing methods often only test a single proportional valve body, failing to meet the needs of large-scale production testing. Therefore, a durability testing device for inlet proportional valves in diesel common rail systems is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a durability testing device for the inlet proportional valve in a diesel common rail system, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a durability testing device for an inlet proportional valve in a diesel common rail system, comprising an electrical module, a control module, a hydraulic component, a detection component, a frame component, a housing component, and a moving component;

[0006] The detection component is equipped with a proportional valve body for oil inlet in the diesel common rail system on one side;

[0007] The detection assembly includes a valve block, a plurality of hydraulic switching valves are mounted on the top of the valve block, an overflow valve is connected to one side of the top of the valve block, a pressure sensor is mounted on one side of the valve block, a hydraulic gauge is connected to one side of the top of the valve block, a plurality of mounting seats are mounted on one side of the valve block, and the proportional valve body is mounted to one side of the mounting seats by bolts.

[0008] The electrical module includes an electrical cabinet, inside which are first mounting plates. On the surface of the first mounting plates are respectively mounted a circuit breaker, a current sensor, a signal connection plate, a switch, a contactor, a transformer, a signal terminal, a potential terminal, an outgoing terminal, and a switching power supply. The electrical cabinet has a wire trough installed inside, and a first cooling fan is installed on one side of the electrical cabinet.

[0009] Preferably, the circuit breaker, current sensor, signal connection board, switch, contactor, transformer, signal terminal, potential terminal, outgoing terminal and switching power supply are interconnected by wiring harness.

[0010] Preferably, the control module includes an industrial computer, a signal acquisition card, and a display, wherein the industrial computer is connected to the display and the signal acquisition card respectively.

[0011] Preferably, the control module further includes several sensors, which are connected to the proportional valve body and signal terminals respectively. The proportional valve body and signal terminals are connected to a signal connection board, which is connected to a signal acquisition card.

[0012] Preferably, the hydraulic assembly includes a second mounting plate and a hydraulic oil tank, with a circulating pump mounted on the top of the hydraulic oil tank, and an energy storage device, a hydraulic pump, a circulating pump, and a hydraulic pump motor mounted on one side of the second mounting plate.

[0013] Preferably, the energy storage device, filter element, hydraulic pump and circulation pump are all connected by pipelines. The output shaft of the hydraulic pump motor is fixed to the input shaft of the hydraulic pump. The oil inlet of the circulation pump and the hydraulic pump is connected to the oil outlet of the hydraulic oil tank. The liquid outlet of the filter element is connected to the liquid inlet of the hydraulic switching valve.

[0014] Preferably, the frame assembly includes a support frame, connecting blocks between the support frames, a base plate fixed to the bottom of the support frame, a mounting platform fixed between the middle sections of the support frames, and feet fixed to the bottom of the support frame.

[0015] Preferably, the aforementioned housing assembly includes a baffle, a mounting bracket is mounted on one side of the baffle, an emergency stop button and a display are mounted on one side of the mounting bracket, and a tri-color light and a second cooling fan are mounted on the top of the baffle.

[0016] Preferably, the aforementioned moving component includes a hydraulic cylinder, with a horizontal plate fixed to the push rod end of the hydraulic cylinder, and a plurality of rollers installed at the bottom of the horizontal plate.

[0017] Preferably, the outer side of the hydraulic cylinder is fixed to the bottom of the support frame, the bottom of the valve block is installed on the top of the mounting platform, one side of the electrical cabinet is installed on one side of the support frame, one side of the second mounting plate and one side of the hydraulic oil tank are both installed on the top of the base plate, and one side of the baffle is installed on the surface of the support frame.

[0018] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:

[0019] By integrating the electrical and control modules, the testing process is automated. Users only need to input the test parameters on the display, and the system can automatically complete the circulation, delivery, and testing of hydraulic oil, reducing manual intervention and improving the accuracy and consistency of the test. This device allows for the simultaneous installation and testing of multiple proportional valve bodies, greatly improving testing efficiency. The control module can acquire and display the durability test data of the proportional valve body in real time, which can promptly identify potential problems in the proportional valve body during long-term use, thereby enabling improvements and optimizations during the product development stage and improving product quality.

[0020] By controlling the extension of the push rod end of the hydraulic cylinder, the horizontal plate and the rollers at its bottom are brought into contact with the ground, allowing the entire device to be moved easily within a small range. This improves the flexibility of the device and makes it more convenient to adjust its position or carry out short-distance transport. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the electrical module structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the frame component structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the outer shell assembly structure of this utility model;

[0026] Figure 5 This is a schematic diagram of the hydraulic component structure of this utility model;

[0027] Figure 6 This is a schematic diagram of the detection component structure of this utility model;

[0028] Figure 7 This is a connection diagram of the control module of this utility model;

[0029] Figure 8 This is a schematic diagram of the main structure of the mobile component of this utility model.

[0030] Explanation of reference numerals in the attached diagram: 1. Electrical module; 7. Circuit breaker; 8. First cooling fan; 9. Current sensor; 10. Signal connection board; 11. Switch; 12. Contactor; 13. Cable tray; 14. Transformer; 15. Signal terminal; 16. Potential terminal; 17. First mounting plate; 18. Outgoing terminal; 19. Switching power supply;

[0031] 2. Control module; 47. Industrial computer; 48. Signal acquisition card; 49. Sensor; 50. Display;

[0032] 3. Hydraulic components; 21. Accumulator; 22. Second mounting plate; 23. Filter element; 24. Hydraulic pump; 25. Circulating pump; 26. Piping; 27. Hydraulic pump motor; 28. Hydraulic oil tank;

[0033] 4. Detection components; 29. ​​Relief valve; 30. Pressure sensor; 31. Hydraulic switching valve; 32. Valve block; 34. Proportional valve body; 35. Hydraulic gauge;

[0034] 5. Frame components; 36. Support frame; 37. Connecting block; 38. Mounting platform; 39. Base plate; 40. Foot;

[0035] 6. Housing assembly; 41. Tri-color indicator light; 42. Second cooling fan; 44. Emergency stop button; 45. Mounting bracket; 46. Baffle;

[0036] 51. Hydraulic cylinder; 52. Roller; 53. Horizontal plate. Detailed Implementation

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce. Example

[0039] Please see Figure 1-8 This utility model provides a technical solution: a durability testing device for an inlet proportional valve in a diesel common rail system, comprising an electrical module 1, a control module 2, a hydraulic component 3, a detection component 4, a frame component 5, a housing component 6, and a moving component; the detection component 4 is provided with a proportional valve body 34 for inlet in the diesel common rail system on one side;

[0040] An overflow valve 29 is connected to one side of the top of the valve block 32, a pressure sensor 30 is installed on one side of the valve block 32, a hydraulic gauge 35 is connected to one side of the top of the valve block 32, and several mounting seats are installed on one side of the valve block 32. The proportional valve body 34 is installed on one side of the mounting seat by bolts. Test parameters are input on the display 50 of the control module 2. Under the action of the electrical module 1, the circulation pump 25 continuously circulates the hydraulic oil in the hydraulic oil tank 28. At the same time, under the action of the hydraulic pump motor 27, the hydraulic pump 24, the filter element 23 and the accumulator 21, the hydraulic oil is delivered to the inside of the valve block 32.

[0041] The detection component 4 includes a valve block 32, and a number of hydraulic switching valves 31 are mounted on the top of the valve block 32;

[0042] Hydraulic switching valve 31 is used to detect the switching between the performance flow value and the durability flow value of the proportional valve body 34 during durability testing;

[0043] Pressure sensor 30 is used to monitor the pressure values ​​at the oil inlet and oil return ports of the proportional valve body 34;

[0044] The overflow valve 29 is used to adjust the inlet and outlet oil pressure values ​​of the proportional valve body 34.

[0045] Electrical module 1 includes an electrical cabinet. Inside the electrical cabinet are first mounting plates 17. On the surface of the first mounting plates 17 are mounted circuit breakers 7, current sensors 9, signal connection plates 10, switches 11, contactors 12, transformers 14, signal terminals 15, potential terminals 16, outgoing terminals 18, and switching power supplies 19. Inside the electrical cabinet are wire troughs 13. On one side of the electrical cabinet is a first cooling fan 8. The circuit breakers 7, current sensors 9, signal connection plates 10, switches 11, contactors 12, transformers 14, signal terminals 15, potential terminals 16, outgoing terminals 18, and switching power supplies 19 are interconnected by wire harnesses.

[0046] Control module 2 includes an industrial computer 47, a signal acquisition card 48, and a display 50. The industrial computer 47 is connected to both the display 50 and the signal acquisition card 48. Control module 2 also includes several sensors 49, which are connected to the proportional valve body 34 and signal terminals 15. The proportional valve body 34 and signal terminals 15 are connected to a signal connection board 10, which is connected to the signal acquisition card 48. Figure 6 This diagram shows the connection between the control module 2, the display 50, and the proportional valve body 34.

[0047] The hydraulic assembly 3 includes a second mounting plate 22 and a hydraulic oil tank 28. After the hydraulic oil enters the proportional valve body 34, it is transported to the oil inlet of the hydraulic oil tank 28 through the pipeline 26 connected to the oil return port of the valve block 32, forming a circulation loop. A circulation pump 25 is installed on the top of the hydraulic oil tank 28. An energy storage device 21, a hydraulic pump 24, a circulation pump 25, and a hydraulic pump motor 27 are respectively installed on one side of the second mounting plate 22. Pipelines 26 connect the energy storage device 21, the filter element 23, the hydraulic pump 24, and the circulation pump 25. The output shaft of the hydraulic pump motor 27 is fixed to the input shaft of the hydraulic pump 24. The oil inlets of the circulation pump 25 and the hydraulic pump 24 are connected to the oil outlet of the hydraulic oil tank 28. The oil outlet of the filter element 23 is connected to the oil inlet of the hydraulic switching valve 31. With the cooperation of the overflow valve 29, the pressure sensor 30, the hydraulic switching valve 31, and the hydraulic gauge 35, the hydraulic oil performs a durability test on the proportional valve body 34.

[0048] The frame component 5 includes a support frame 36, a connecting block 37 connecting the support frames 36, a base plate 39 fixed to the bottom of the support frame 36, a mounting platform 38 fixed between the middle of the support frames 36, and a foot 40 fixed to the bottom of the support frame 36. The flatness of the support frame 36 can be adjusted by the foot 40.

[0049] The housing assembly 6 includes a baffle 46, a mounting bracket 45 is mounted on one side of the baffle 46, an emergency stop button 44 and a display 50 are mounted on one side of the mounting bracket 45, and a tri-color light 41 and a second cooling fan 42 are mounted on the top of the baffle 46.

[0050] The moving component includes a hydraulic cylinder 51, with a horizontal plate 53 fixed to the push rod end of the hydraulic cylinder 51. Several rollers 52 are installed at the bottom of the horizontal plate 53. By controlling the extension of the push rod end of the hydraulic cylinder 51, the push rod end pushes the horizontal plate 53 downward, causing the multiple rollers 52 at the bottom of the horizontal plate 53 to contact the ground. Under the action of the multiple rollers 52, the device can be moved within a small range. The outer side of the hydraulic cylinder 51 is fixed to the bottom of the support frame 36. The bottom of the valve block 32 is installed on the top of the mounting platform 38. One side of the electrical cabinet is installed on one side of the support frame 36. One side of the second mounting plate 22 and one side of the hydraulic oil tank 28 are both installed on the top of the base plate 39. One side of the baffle 46 is installed on the surface of the support frame 36.

[0051] Working principle: When multiple proportional valve bodies 34 need to be tested, the proportional valve body 34 is installed on one side of the mounting base by bolts. At this time, the test parameters are input on the display 50 of the control module 2. Under the action of the electrical module 1, the circulation pump 25 continuously circulates the hydraulic oil in the hydraulic oil tank 28. At the same time, under the action of the hydraulic pump motor 27, hydraulic pump 24, filter element 23 and accumulator 21, the hydraulic oil is delivered to the inside of the valve block 32. At this time, the hydraulic oil, with the cooperation of the relief valve 29, pressure sensor 30, hydraulic switching valve 31 and hydraulic gauge 35, performs a durability test on the proportional valve body 34.

[0052] After the hydraulic oil enters the proportional valve body 34, it is transported to the oil inlet of the hydraulic oil tank 28 through the oil return port connected to the pipeline 26 of the valve block 32, forming a circulation loop. At this time, different types of proportional valve bodies 34 can be installed on one side of the mounting base for testing at the same time. Multiple proportional valve bodies 34 can be tested at the same time. Under the action of the control module 2, the durability test data of the proportional valve body 34 can be obtained. This device provides time guarantee and data support for the product development, testing and verification of the proportional valve body 34.

[0053] When it is necessary to move the device within a small range, simply control the push rod end of the hydraulic cylinder 51 to extend, so that the push rod end pushes the horizontal plate 53 downward, so that the multiple rollers 52 at the bottom of the horizontal plate 53 contact the ground. Under the action of the multiple rollers 52, the device can be moved within a small range.

[0054] In summary, the integration of electrical module 1 and control module 2 achieves automated testing. Users only need to input test parameters on display 50, and the system can automatically complete the circulation, delivery, and testing process of hydraulic oil, reducing manual intervention and improving the accuracy and consistency of testing. This device allows for the simultaneous installation and testing of multiple proportional valve bodies 34, greatly improving testing efficiency. Control module 2 can acquire and display the durability test data of the proportional valve body 34 in real time, which can promptly identify potential problems in the proportional valve body 34 during long-term use, thereby enabling improvements and optimizations during the product development stage and improving product quality.

[0055] By controlling the extension of the push rod end of the hydraulic cylinder 51, the horizontal plate 53 and the rollers 52 at its bottom are brought into contact with the ground, thereby enabling the entire device to be moved easily within a small range, improving the flexibility of the device and making it more convenient when the position needs to be adjusted or when short-distance transportation is required.

[0056] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways without departing from the spirit and teachings of this utility model. All such combinations and / or combinations fall within the scope of this utility model.

Claims

1. A durability testing device for an inlet proportioning valve in a diesel common rail system, characterized in that: It includes an electrical module (1), a control module (2), a hydraulic assembly (3), a detection assembly (4), a frame assembly (5), a housing assembly (6), and a moving assembly; The detection component (4) is provided with a proportional valve body (34) for oil inlet in the diesel common rail system on one side. The detection component (4) includes a valve block (32), a plurality of hydraulic switching valves (31) are mounted on the top of the valve block (32), an overflow valve (29) is connected to one side of the top of the valve block (32), a pressure sensor (30) is mounted on one side of the valve block (32), a hydraulic gauge (35) is connected to one side of the top of the valve block (32), a plurality of mounting seats are mounted on one side of the valve block (32), and the proportional valve body (34) is mounted to one side of the mounting seats by bolts; The electrical module (1) includes an electrical cabinet, inside which there is a first mounting plate (17), and on the surface of the first mounting plate (17) are respectively a circuit breaker (7), a current sensor (9), a signal connection plate (10), a switch (11), a contactor (12), a transformer (14), a signal terminal (15), a potential terminal (16), an outgoing terminal (18), and a switching power supply (19). Inside the electrical cabinet is a wire trough (13), and on one side of the electrical cabinet is a first cooling fan (8).

2. The durability testing device for an inlet proportioning valve in a diesel common rail system according to claim 1, characterized in that: The circuit breaker (7), current sensor (9), signal connection board (10), switch (11), contactor (12), transformer (14), signal terminal (15), potential terminal (16), outgoing terminal (18) and switching power supply (19) are interconnected by wiring harnesses.

3. The durability testing device for an inlet proportioning valve in a diesel common rail system according to claim 2, characterized in that: The control module (2) includes an industrial computer (47), a signal acquisition card (48), and a display (50). The industrial computer (47) is connected to the display (50) and the signal acquisition card (48) respectively.

4. The durability testing device for an inlet proportioning valve in a diesel common rail system according to claim 3, characterized in that: The control module (2) also includes a number of sensors (49), which are connected to the proportional valve body (34) and the signal terminal (15) respectively. The proportional valve body (34) and the signal terminal (15) are connected to the signal connection board (10), and the signal connection board (10) is connected to the signal acquisition card (48).

5. A durability testing device for an inlet proportioning valve in a diesel common rail system according to claim 4, characterized in that: The hydraulic assembly (3) includes a second mounting plate (22) and a hydraulic oil tank (28). A circulation pump (25) is installed on the top of the hydraulic oil tank (28). An energy storage device (21), a hydraulic pump (24), a circulation pump (25) and a hydraulic pump motor (27) are respectively installed on one side of the second mounting plate (22).

6. A durability testing device for an inlet proportioning valve in a diesel common rail system according to claim 5, characterized in that: The energy storage device (21), filter element (23), hydraulic pump (24) and circulation pump (25) are all connected by pipelines (26). The output shaft of the hydraulic pump motor (27) is fixed to the input shaft of the hydraulic pump (24). The oil inlet of the circulation pump (25) and the hydraulic pump (24) are connected to the oil outlet of the hydraulic oil tank (28). The liquid outlet of the filter element (23) is connected to the liquid inlet of the hydraulic switching valve (31).

7. A durability testing device for an inlet proportioning valve in a diesel common rail system according to claim 6, characterized in that: The frame assembly (5) includes a support frame (36), a connecting block (37) connecting the support frames (36), a base plate (39) fixed to the bottom of the support frame (36), an mounting platform (38) fixed between the middle parts of the support frames (36), and a foot (40) fixed to the bottom of the support frame (36).

8. A durability testing device for an inlet proportioning valve in a diesel common rail system according to claim 7, characterized in that: The housing assembly (6) includes a baffle (46), a mounting bracket (45) is mounted on one side of the baffle (46), an emergency stop button (44) and a display (50) are mounted on one side of the mounting bracket (45), and a tri-color light (41) and a second cooling fan (42) are mounted on the top of the baffle (46).

9. A durability testing device for an inlet proportioning valve in a diesel common rail system according to claim 8, characterized in that: The moving component includes a hydraulic cylinder (51), the push rod end of which is fixed with a horizontal plate (53), and a number of rollers (52) are installed at the bottom of the horizontal plate (53).

10. A durability testing device for an inlet proportioning valve in a diesel common rail system according to claim 9, characterized in that: The outer side of the hydraulic cylinder (51) is fixed to the bottom of the support frame (36), the bottom of the valve block (32) is installed on the top of the mounting platform (38), one side of the electrical cabinet is installed on one side of the support frame (36), one side of the second mounting plate (22) and the hydraulic oil tank (28) are both installed on the top of the base plate (39), and one side of the baffle (46) is installed on the surface of the support frame (36).

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