Cylinder cover testing equipment

Abstract

The cylinder cover detection equipment provided by the present invention includes: a frame, a base plate detachably arranged on the frame, a pressing assembly for pressing the cylinder cover onto the base plate, a detection assembly for detecting the performance of the PRV valve on the cylinder cover, and a control assembly. The detection assembly includes first and second air tanks and inlet and outlet flow meters. The first air tank is connected to the through hole located on the base plate through the inlet flow meter and can supply air to the internal cavity of the cylinder cover. The second air tank is connected to the working condition pipe of the PRV valve and can adjust the working condition of the PRV valve. The outlet flow meter is connected to the outlet pipe of the PRV valve and can detect the outlet flow of the PRV valve. The display screen of the control assembly is electrically connected to the inlet and outlet flow meters and can display and record data measured by the inlet and outlet flow meters. The pressing and detection assembly actions are controlled by the control button of the control assembly, so as to realize automated operation and achieve the technical effect of automatically detecting the performance of the PRV valve under different working conditions.

Description

Technical Field

[0001] The present invention relates to the field of cylinder cover detection, and in particular to a detection device for detecting the performance of a PRV valve on a cylinder cover. Background Art

[0002] The cylinder cover is a cover covering the engine cylinder block, which can prevent external impurities from entering the engine. In order to balance the pressure in the engine crankcase, most existing cylinder covers are also provided with a PRV valve for regulating the pressure in the crankcase. For example, Chinese patent CN207830005U discloses an integrated cylinder head cover with a PRV valve. However, when testing this type of cylinder cover, it is usually only possible to test the airtightness of the cylinder cover, and it is difficult to test the performance of the PRV valve under different working conditions. There is an urgent need for a device that specifically tests the performance of the PRV valve on the cylinder cover under different working conditions. Summary of the Invention

[0003] The purpose of the present invention is to overcome the defects of the prior art and provide a cylinder cover detection device, which can detect the performance of the PRV valve on the cylinder cover under different working conditions.

[0004] To achieve the above object, the technical solution adopted by the present invention is a cylinder cover detection device for detecting the performance of the PRV valve on the cylinder cover, the detection device comprising:

[0005] a frame, wherein a support plate is provided on the frame;

[0006] a bottom plate, the bottom plate being detachably mounted on the support plate, the upper surface of the bottom plate being parallel to the horizontal plane, the bottom plate being used to place the cylinder cover, and the bottom plate being provided with a through hole communicating with the internal cavity of the cylinder cover;

[0007] a pressing assembly, the pressing assembly being used to press the cylinder cover onto the base plate so as to form a seal between the lower end surface of the cylinder cover and the upper surface of the base plate;

[0008] A detection assembly, the detection assembly comprising a first air tank, a second air tank, an intake flow meter, and an outlet flow meter, the first air tank being connected to the through hole via the intake flow meter, the first air tank being used to supply air to the internal cavity of the cylinder cover, the second air tank being connected to the working condition pipe of the PRV valve on the cylinder cover, the second air tank being used to adjust the working condition of the PRV valve, and the outlet flow meter being connected to the outlet pipe of the PRV valve;

[0009] A control component includes a control box arranged on the frame, a controller located in the control box, a display screen and control buttons arranged on the front side of the control box, the display screen is electrically connected to the intake flow meter and the outlet flow meter, the display screen can display and record data measured by the intake flow meter and the outlet flow meter, and the control buttons are used to control the action of the clamping assembly and the detection assembly.

[0010] Preferably, the first air tank is arranged in the frame and located below the support plate, and the first air tank is connected in series between the air source and the intake flow meter.

[0011] Further preferably, a pressure sensor is provided on the first air tank, and the pressure sensor is used to monitor the pressure in the first air tank so as to stabilize the pressure of the first air tank.

[0012] Preferably, the second air tank is arranged in the frame and located below the support plate, the second air tank is a negative pressure tank, and the second air tank is connected in series between the vacuum source and the working condition pipe.

[0013] Further preferably, the clamping assembly includes a clamping plate movably arranged above the base plate and a plurality of clamping rods arranged on the clamping plate and extending downward. When the clamping plate moves downward to a set position, the lower end of the clamping rod presses against the upper surface of the cylinder cover to press the cylinder cover onto the base plate.

[0014] Further preferably, a plurality of guide posts extending upward are provided on the base plate, and the guide posts pass through the guide holes on the pressing plate.

[0015] Further preferably, the pressing assembly further includes a driving cylinder for driving the pressing plate to move up and down.

[0016] Further preferably, the driving cylinder is arranged at the upper end of the frame and is located above the pressing plate, and the end of the cylinder rod of the driving cylinder is connected to the center of the pressing plate.

[0017] Further preferably, the pressing rod is movably disposed on the pressing plate.

[0018] Further preferably, a spring is sleeved on the pressing rod, and two ends of the spring are respectively pressed against the pressing rod and the pressing plate, and the spring has a tendency to drive the pressing rod to move downward.

[0019] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0020] The cylinder cover detection equipment provided by the present invention includes: a frame, a base plate detachably arranged on the frame, a pressing assembly for pressing the cylinder cover onto the base plate, a detection assembly for detecting the performance of the PRV valve on the cylinder cover, and a control assembly. The detection assembly includes first and second air tanks and inlet and outlet flow meters. The first air tank is connected to the through hole located on the base plate through the inlet flow meter and can supply air to the internal cavity of the cylinder cover. The second air tank is connected to the working condition pipe of the PRV valve and can adjust the working condition of the PRV valve. The outlet flow meter is connected to the outlet pipe of the PRV valve and can detect the outlet flow of the PRV valve. The display screen of the control assembly is electrically connected to the inlet and outlet flow meters and can display and record data measured by the inlet and outlet flow meters. The pressing and detection assembly actions are controlled by the control button of the control assembly, so as to realize automated operation and achieve the technical effect of automatically detecting the performance of the PRV valve under different working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the main view of a preferred embodiment of the present invention, wherein connecting wires, connecting air pipes, air sources and vacuum sources are not shown.

[0022] Figure 2 yes Figure 1 Schematic cross-sectional view in the AA direction.

[0023] in:

[0024] 10. Frame; 11. Support plate; 20. Base plate; 21. Guide column; 30. Clamping assembly; 31. Clamping plate; 32. Clamping rod; 33. Drive cylinder; 34. Spring; 40. Detection assembly; 41. First air tank; 411. Pressure sensor; 42. Second air tank; 43. Inlet flow meter; 44. Outlet flow meter; 50. Control assembly; 51. Control box; 53. Display screen; 54. Control button; 60. Cylinder cover; 61. Outlet pipe; 62. Working pipe. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0026] The up and down directions described in the present invention are Figure 1 The up-down direction in the present invention is the front-back direction. Figure 1 The outside and inside directions.

[0027] like Figure 1-2As shown, the cylinder cover detection device provided by the present invention is used to detect the performance of the PRV valve on the cylinder cover 60. The detection device includes: a frame 10, a base plate 20, a pressing assembly 30, a detection assembly 40 and a control assembly 50, wherein a support plate 11 is provided on the frame 10; the base plate 20 is detachably provided on the support plate 11. The advantage of such a setting is that it can enhance the versatility of the frame 10 and the support plate 11. The upper surface of the base plate 20 is parallel to the horizontal plane. The base plate 20 is used to place the cylinder cover The bottom plate 20 is provided with a through hole communicating with the internal cavity of the cylinder cover 60. Specifically, the bottom plate 20 is composed of two layers of plates, which are connected by a support rod. By adjusting the length of the support plate, the height of the upper surface of the bottom plate 20 in the vertical direction can be adjusted; the pressing assembly 30 is used to press the cylinder cover 60 on the bottom plate 20 so that a seal is formed between the lower end surface of the cylinder cover 60 and the upper surface of the bottom plate 20; the detection assembly 40 includes a first air tank 41 and a second air tank 42. , an intake flow meter 43, and an outlet flow meter 44. The first air tank 41 is connected to the through hole through the intake flow meter 43. The first air tank 41 is used to supply air to the internal cavity of the cylinder cover 60. The second air tank 42 is connected to the working condition pipe 62 of the PRV valve on the cylinder cover 60. The second air tank 42 is used to adjust the working condition of the PRV valve. The outlet flow meter 44 is connected to the outlet pipe 61 of the PRV valve; the control component 50 includes a control box 51 arranged on the frame 10, a controller (not shown in the figure) located in the control box 51, a display screen 53 and a control button 54 arranged on the front side of the control box 51. The controller is a logic program controller, such as a PLC. The display screen 53 is electrically connected to the intake flow meter 43 and the outlet flow meter 44. The display screen 53 can display and record data measured by the intake flow meter 43 and the outlet flow meter 44. The control button 54 is electrically connected to the controller. The control button 54 can control the action of the clamping component and the detection component through the controller to realize the detection of the performance of the PRV valve.

[0028] In this embodiment, the first air tank 41 and the second air tank 42 are both arranged on the frame and located below the support plate 11. Specifically, the first air tank 41 is connected in series between the air source and the intake flow meter 43. The first air tank 41 is provided with a pressure sensor 411. The pressure sensor 411 is used to monitor the pressure in the first air tank 41 so as to stabilize the pressure of the first air tank 41. The second air tank 42 is a negative pressure tank. The second air tank 42 is connected in series between the vacuum source and the working condition pipe 62. By providing the first air tank 41, a crankcase with a certain pressure can be simulated. By providing the second air tank 42, the working condition of the PRV valve on the cylinder cover 60 can be adjusted. The gas flow in and out of the PRV valve is then detected by the intake flow meter 43 and the outlet flow meter 44, and compared with the design value of the PRV valve, it can be judged whether the performance of the PRV valve meets the requirements.

[0029] In this embodiment, the pressing assembly 30 includes a pressing plate 31 movably arranged above the base plate 20 and a plurality of pressing rods 32 arranged on the pressing plate 31 and extending downward. When the pressing plate 31 moves downward to a set position, the lower end of the pressing rod 32 is pressed against the upper surface of the cylinder cover 60, pressing the cylinder cover 60 against the base plate 20. In order to facilitate alignment, the base plate 20 is provided with a plurality of guide posts 21 extending upward, and the guide posts 21 pass through the guide holes on the pressing plate 31. In order to facilitate driving, the pressing assembly 30 also includes a plurality of guide posts 21 for driving. The driving cylinder 33 for moving the dynamic pressure plate 31 up and down, specifically, the driving cylinder 33 is arranged at the upper end of the frame 10 and above the pressure plate 31, the end of the cylinder rod of the driving cylinder 33 is connected to the center of the pressure plate 31, and the pressure rod 32 is movably arranged on the pressure plate 31 up and down. In order to match the uneven upper surface of the cylinder cover 60 and improve the pressure effect, a spring 34 is provided on the pressure rod 32, and the two ends of the spring 34 are respectively pressed against the pressure rod 32 and the pressure plate 31, and the spring 34 has a tendency to drive the pressure rod 32 to move downward.

[0030] The cylinder cover detection equipment provided by the present invention provides a first air tank, which is connected to the through hole located on the bottom plate through the intake flow meter, and can supply air to the internal cavity of the cylinder cover; provides a second air tank, which is connected to the working condition pipe of the PRV valve, and can adjust the working condition of the PRV valve; connects the outlet flow meter to the outlet pipe of the PRV valve, and can detect the outlet flow of the PRV valve; electrically connects the display screen of the control component to the intake and outlet flow meters, which can display and record the data measured by the intake and outlet flow meters; and then controls the action of the pressing and detection components through the control button of the control component, thereby realizing automated operation and achieving the technical effect of automatically detecting the performance of the PRV valve under different working conditions.

[0031] The above embodiments are only for illustrating the technical concept and features of the present invention. Its purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly. It cannot be used to limit the scope of protection of the present invention. Any equivalent transformations or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. Cylinder cover inspection equipment for testing the performance of the PRV valve on the cylinder cover, including: A frame provided with a support plate; A bottom plate detachably provided on the support plate for placing the cylinder cover, wherein the upper surface of the bottom plate is parallel to the horizontal plane and a through hole communicating with the inner cavity of the cylinder cover is formed on the bottom plate; A pressing assembly for pressing the cylinder cover onto the base plate to form a seal between the lower end surface and the upper surface of the base plate; A detection assembly having a first air tank, a second air tank, an intake flow meter, and an outlet flow meter. The first air tank is connected to the through hole through the intake flow meter and is used to supply air to the internal cavity of the cylinder cover. The outlet flow meter is connected to the outlet pipe of the PRV valve. A control assembly having a control box mounted on a frame, a controller located within the control box, a display screen and control buttons disposed on the front side of the control box, wherein the display screen is electrically connected to an inlet flow meter and an outlet flow meter to display and record data measured by the inlet flow meter and the outlet flow meter, and the control buttons are used to control the actions of the pressing assembly and the detection assembly; Its characteristics are: The first air tank and the second air tank are both arranged in the frame and located below the support plate. The first air tank is connected in series between the air source and the intake flow meter. A pressure sensor for monitoring the pressure therein is provided on the first air tank so as to stabilize the pressure of the first air tank and simulate a crankcase with a certain pressure. The second air tank is connected to the working pipe of the PRV valve on the cylinder cover. The second air tank is a negative pressure tank connected in series between the vacuum source and the working pipe, which can adjust the working condition of the PRV valve. The gas flow in and out of the PRV valve is detected by the intake flow meter and the outlet flow meter, and compared with the design value of the PRV valve, so as to determine whether the performance of the PRV valve under different working conditions meets the requirements, thereby realizing the detection of the PRV valve performance.

2. The cylinder cover detection device according to claim 1, characterized in that: The bottom plate is composed of two layers of plates, which are connected by support rods. By adjusting the length of the support plates, the height of the upper surface of the bottom plate in the up and down directions can be adjusted.

3. The cylinder cover detection device according to claim 1, characterized in that: The clamping assembly includes a clamping plate movably arranged above the base plate and a plurality of clamping rods arranged on the clamping plate and extending downward. When the clamping plate moves downward to a set position, the lower end of the clamping rod presses against the upper surface of the cylinder cover to press the cylinder cover onto the base plate.

4. The cylinder cover detection device according to claim 3, characterized in that: A plurality of guide posts extending upward are provided on the bottom plate, and the guide posts pass through the guide holes on the pressing plate.

5. The cylinder cover detection device according to claim 3, characterized in that: The pressing assembly further includes a driving cylinder for driving the pressing plate to move up and down.

6. The cylinder cover inspection device according to claim 5, characterized in that: The driving cylinder is arranged at the upper end of the frame and is located above the pressing plate, and the end of the cylinder rod of the driving cylinder is connected to the center of the pressing plate.

7. The cylinder cover inspection device according to claim 3, characterized in that: The pressing rod is movably arranged on the pressing plate.

8. The cylinder cover inspection device according to claim 7, characterized in that: A spring is sleeved on the pressing rod, and two ends of the spring are respectively pressed against the pressing rod and the pressing plate, and the spring has a tendency to drive the pressing rod to move downward.

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