An automatic water-cooled engine modular cylinder head leak testing mechanism

Abstract

The utility model relates to water -cooled engine cylinder cover leak detection technical field discloses a kind of water -cooled engine modularization cylinder cover automatic leak detection mechanism, including frame, the top of the frame is fixedly installed with leak detector electrical cabinet, the top of the frame is fixedly installed with compacting cylinder, the output end of the compacting cylinder is passed to the inside of frame and fixedly installed with lifting plate. In the utility model, engine cylinder cover is conveyed to equipment inside by the conveying roller group on the surface of frame, then compacting cylinder drives lifting plate and discharging rack to slide and fit engine cylinder cover top, to realize preliminary positioning, while the plugging mechanism and air intake mechanism on the bottom of lifting plate can be started leak detector electrical cabinet after the butt joint engine cylinder cover cavity;Compressed air enters the waterway of engine cylinder cover by air intake mechanism, system automatically judges whether qualified, reach the effect of substantially improving leak detection efficiency, reduce artificial labor intensity and artificial error.

Description

Technical Field

[0001] This utility model relates to the field of water-cooled engine cylinder head leak testing technology, and in particular to an automatic leak testing mechanism for modular cylinder heads of water-cooled engines. Background Technology

[0002] Currently, the cylinder head of a water-cooled engine has a cooling water jacket inside. The cooling water holes on the lower end face of the cylinder head are connected to the cooling water holes in the cylinder block. Due to casting defects such as sand holes and shrinkage cavities, water leakage may occur during casting, which can lead to water leakage. Water leakage has become a common mode of cylinder head failure, and it is impossible to determine whether it is qualified by manual observation alone.

[0003] The currently used leak testing method is mainly the pressure water immersion method. This involves sealing the communicating holes with a steel plate and rubber gasket by bolts, then immersing the area in water after compressed air is introduced. The presence of bubbles is used to determine if the leak test is successful. However, the pressure water immersion method is inefficient, carries the risk of workpiece rusting, and the results of manual inspection are highly subjective and lack precision. Furthermore, complex waterway structures have blind spots in the inspection process.

[0004] To address this issue, an automatic leak testing mechanism for modular cylinder heads in water-cooled engines is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an automatic leak testing mechanism for modular cylinder heads of water-cooled engines, which aims to improve the problems of low efficiency, risk of workpiece rusting, and high subjectivity and insufficient accuracy of manual inspection results in the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An automatic leak testing mechanism for a modular cylinder head of a water-cooled engine includes a frame. An electrical box for a leak tester is fixedly mounted on the top of the frame. A clamping cylinder is also fixedly mounted on the top of the frame. The output end of the clamping cylinder extends into the interior of the frame and is fixedly mounted on a lifting plate. A feeding rack is fixedly mounted on the bottom of the lifting plate. An engine cylinder head is located at the bottom of the feeding rack. A movable plate is located at the bottom of the engine cylinder head. A connecting plate is located at the bottom of the movable plate. Fixed shafts are fixedly connected to the four corners of the bottom of the connecting plate. The lifting plate is slidably connected to the surface of the fixed shafts. The top of the fixed shafts is fixedly connected to the top of the inner wall of the frame. The frame and the top of the connecting plate are both fixedly installed with conveying roller sets. The surface of the conveying roller sets is in contact with the bottom of the moving plate. The rear side of the top of the connecting plate is fixedly installed with an infeed cylinder. The output end of the infeed cylinder is fixedly installed on the front side of the moving plate through a connecting block. A water tank is provided inside the frame. Lifting cylinders are fixedly installed on both sides inside the frame. The output end of the lifting cylinder is fixedly installed on the surface of the water tank through a connecting block. A sealing mechanism is fixedly installed on the front side of the bottom left of the lifting plate. An air intake mechanism is fixedly installed on the rear side of the bottom left of the lifting plate. A flushing assembly is installed inside the water tank.

[0008] As a further description of the above technical solution:

[0009] A guide plate is fixedly connected inside the water tank, a composite filter plate is provided at the bottom of the inner cavity of the water tank, and a push-out component is provided at the bottom of the composite filter plate.

[0010] As a further description of the above technical solution:

[0011] The ejection assembly includes an ejection cylinder, which is fixedly installed on the right side of the bottom of the water tank. A pad is fixedly connected to the bottom of the composite filter plate. The output end of the ejection cylinder extends into the interior of the water tank and is fixedly connected to a push plate, which is located inside the pad.

[0012] As a further description of the above technical solution:

[0013] The rinsing assembly includes a high-pressure water pump, which is fixedly installed at the bottom of the inner wall of the water tank. The input end of the high-pressure water pump is connected to the surface of the guide plate through a pipe. A rinsing spray frame is fixedly installed on the surface of the water tank. The output end of the high-pressure water pump is connected to the surface of the rinsing spray frame through a pipe.

[0014] As a further description of the above technical solution:

[0015] The water tank is fixedly connected to a support frame inside, and the top of the support frame is fixedly connected to the bottom of the guide plate.

[0016] As a further description of the above technical solution:

[0017] The water tank has a positioning groove inside, and positioning pulleys are fixedly installed on both the front and rear sides of the composite filter plate. The positioning pulleys are slidably connected inside the positioning groove.

[0018] As a further description of the above technical solution:

[0019] An ultrasonic transducer assembly is fixedly installed at the bottom of the guide plate, and limit plates are fixedly installed on the front and rear sides of the top right side of the water tank.

[0020] As a further description of the above technical solution:

[0021] A sound insulation layer is fixedly connected to the surface of the water tank, and a protective plate is fixedly connected to the surface of the water tank. The through pipe on the surface of the rinsing spray rack is located inside the protective plate.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the engine cylinder head is conveyed to the inside of the equipment by the conveying roller group on the frame surface. Then, the pressing cylinder drives the lifting plate and the discharge rack to slide down and fit against the top of the engine cylinder head to achieve initial positioning. At the same time, the sealing mechanism and the air intake mechanism at the bottom of the lifting plate are connected to the engine cylinder head cavity, and the electrical box of the leak tester can be started. Compressed air enters the water channel of the engine cylinder head through the air intake mechanism. The system automatically judges whether it is qualified, which greatly improves the leak test efficiency and reduces the intensity of manual labor and human error.

[0024] 2. In this utility model, by adding a special cleaning agent for engine parts inside the water tank, when the engine cylinder head leak test is qualified or unqualified, the lifting cylinder pushes the water tank upward, so that the engine cylinder head leak test is immersed in the cleaning agent. The high-pressure water pump pressurizes the cleaning agent and delivers it to the flushing spray rack through the pipe. The nozzles on the flushing spray rack perform high-pressure flushing on the surface of the engine cylinder head, realizing automated cleaning after the engine cylinder head leak test, effectively removing residual debris, oil stains and other impurities. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of an automatic leak testing mechanism for a modular cylinder head of a water-cooled engine proposed in this utility model.

[0026] Figure 2 This is a schematic diagram of the sound insulation layer of an automatic leak testing mechanism for a modular cylinder head of a water-cooled engine proposed in this utility model.

[0027] Figure 3 This is a schematic diagram of the water tank structure of the automatic leak testing mechanism for a modular cylinder head of a water-cooled engine proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the high-pressure water pump of the automatic leak testing mechanism for a modular cylinder head of a water-cooled engine proposed in this utility model.

[0029] Figure 5 This is a schematic diagram of the support frame for an automatic leak testing mechanism for a modular cylinder head of a water-cooled engine proposed in this utility model.

[0030] Figure 6 This is a schematic diagram of the composite filter plate of an automatic leak testing mechanism for a modular cylinder head of a water-cooled engine proposed in this utility model.

[0031] Figure 7 for Figure 1 Enlarged view of point A in the middle;

[0032] Figure 8 for Figure 2 Enlarged view of point B in the middle.

[0033] Legend:

[0034] 1. Frame; 2. Leak tester electrical box; 3. Clamping cylinder; 4. Lifting plate; 5. Discharge rack; 6. Engine cylinder head; 7. Moving plate; 8. Connecting plate; 9. Fixed shaft; 10. Conveying roller assembly; 11. Infeed / outfeed cylinder; 12. Water tank; 13. Lifting cylinder; 14. Sealing mechanism; 15. Air intake mechanism; 16. Guide plate; 17. Composite filter plate; 18. Push cylinder; 19. Pad plate; 20. Push plate; 21. High-pressure water pump; 22. Flushing spray rack; 23. Support frame; 24. Positioning chute; 25. Positioning pulley; 26. Ultrasonic transducer assembly; 27. Limiting plate; 28. Sound insulation layer; 29. ​​Protective plate. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Reference Figure 1-8This utility model provides an embodiment of an automatic leak testing mechanism for a modular cylinder head of a water-cooled engine, comprising a frame 1, an electrical box 2 for a leak tester fixedly mounted on the top of the frame 1, a clamping cylinder 3 fixedly mounted on the top of the frame 1, the output end of the clamping cylinder 3 penetrating into the interior of the frame 1 and fixedly mounted on a lifting plate 4, a feeding rack 5 fixedly mounted on the bottom of the lifting plate 4, an engine cylinder head 6 disposed at the bottom of the feeding rack 5, a moving plate 7 disposed at the bottom of the engine cylinder head 6, a connecting plate 8 disposed at the bottom of the moving plate 7, fixed shafts 9 fixedly connected to the four corners of the bottom of the connecting plate 8, the lifting plate 4 slidably connected to the surface of the fixed shafts 9, the top of the fixed shafts 9 fixedly connected to the top of the inner wall of the frame 1, a conveying roller assembly 10 fixedly mounted on the surface of the frame 1 and the top of the connecting plate 8, the surface of the conveying roller assembly 10 contacting the bottom of the moving plate 7, and a fixed rear side of the top of the connecting plate 8 fixedly mounted with... Feeding cylinder 11, the output end of feeding cylinder 11 is fixedly installed on the front side of moving plate 7 through connecting block. Water tank 12 is set inside frame 1. Lifting cylinder 13 is fixedly installed on both sides inside frame 1. The output end of lifting cylinder 13 is fixedly installed on the surface of water tank 12 through connecting block. Blocking mechanism 14 is fixedly installed on the front side of bottom left of lifting plate 4. Air intake mechanism 15 is fixedly installed on the rear side of bottom left of lifting plate 4. Guide plate 16 is fixedly connected inside water tank 12. Composite filter plate 17 is set at the bottom of inner cavity of water tank 12. Support frame 23 is fixedly connected inside water tank 12. Top of support frame 23 is fixedly connected to bottom of guide plate 16. Positioning groove 24 is opened inside water tank 12. Positioning pulley 25 is fixedly installed on both sides of front and rear of composite filter plate 17. Positioning pulley 25 is slidably connected inside positioning groove 24.

[0037] Specifically, the composite filter plate 17 adopts a multi-layer composite structure, with activated carbon and non-woven fabric, which can filter metal debris, oil stains and fine impurities generated during rinsing in stages, preventing contaminants from clogging the high-pressure water pump 21 or scratching the engine cylinder head 6. Its edges are wrapped with sealing strips to ensure a tight fit with the inner wall of the water tank 12, preventing unfiltered liquid from flowing directly into the circulation system. The sealing mechanism 14 consists of a fixed frame, a cylinder and a plug, which seals one end of the test water channel of the engine cylinder head 6. The air intake mechanism 15 consists of a cylinder, a vent cover and an air pipe connector. The output end of the leak tester electrical box 2 is connected to the air pipe connector through the air pipe, so that the leak tester electrical box 2 can inject high-pressure air into the test water channel of the engine cylinder head 6 through the air intake mechanism 15, which works with the sealing mechanism 14 to perform leak testing.

[0038] Reference Figure 3-6The water tank 12 is equipped with a rinsing assembly, which includes a high-pressure water pump 21. The high-pressure water pump 21 is fixedly installed at the bottom of the inner wall of the water tank 12. The input end of the high-pressure water pump 21 is connected to the surface of the guide plate 16 through a pipe. A rinsing spray frame 22 is fixedly installed on the surface of the water tank 12. The output end of the high-pressure water pump 21 is connected to the surface of the rinsing spray frame 22 through a pipe. An ultrasonic transducer assembly 26 is fixedly installed at the bottom of the guide plate 16. Limiting plates 27 are fixedly installed on the front and rear sides of the top right side of the water tank 12. A sound insulation layer 28 is fixedly connected to the surface of the water tank 12. A protective plate 29 is fixedly connected to the surface of the water tank 12. The pipe on the surface of the rinsing spray frame 22 is located inside the protective plate 29.

[0039] Specifically, the ultrasonic transducer assembly 26 consists of multiple ultrasonic transducers arranged and fixed at the bottom of the guide plate 16 according to a certain pattern. It can convert electrical energy into high-frequency mechanical vibration, which is transmitted to the surface of the engine cylinder head 6 through the water. This causes attached oil stains, fine debris, and other impurities to detach under the action of vibration, forming a synergistic effect with high-pressure washing. It is particularly effective in removing impurities from crevices that are difficult to reach with traditional washing. The ultrasonic transducer assembly 26 is used in conjunction with an external ultrasonic generator. The sound insulation layer 28 is made of high-density sound insulation cotton and is wrapped around the outer surface of the water tank 12. It can effectively absorb and block the high-frequency noise generated by the ultrasonic transducer assembly 26 during operation, reduce the impact of noise on operators, ensure that the equipment operating noise meets the noise emission standards for industrial sites, and improve the comfort of the working environment.

[0040] Reference Figure 4-6 The bottom of the composite filter plate 17 is provided with a push-out assembly, which includes a push-out cylinder 18. The push-out cylinder 18 is fixedly installed on the right side of the bottom of the water tank 12. A pad 19 is fixedly connected to the bottom of the composite filter plate 17. The output end of the push-out cylinder 18 extends into the interior of the water tank 12 and is fixedly connected to a push plate 20. The push plate 20 is located inside the pad 19.

[0041] Specifically, when the composite filter plate 17 in the water tank 12 has been used for a preset time, the push cylinder 18 is activated, and its output end pushes the push plate 20 to move inside the pad 19 at the bottom of the composite filter plate 17. The push plate 20 drives the composite filter plate 17 to slide along the positioning groove 24 inside the water tank 12 through the pad 19, pushing the composite filter plate 17 out of the water tank 12 and into the limit plate 27. The staff can directly clean, replace or maintain the pulled-out composite filter plate 17. After completion, push the composite filter plate 17 in the opposite direction to reset it along the positioning groove 24. The push plate 20 moves back to the initial position with the composite filter plate 17.

[0042] Working principle: First, the output end of the leak tester electrical box 2 is connected to the air intake mechanism 15 through the air pipe. The engine cylinder head 6 is conveyed to the inside of the equipment by the conveying roller group 10 on the surface of the frame 1. After the conveying roller group 10 on the top of the connecting plate 8 receives the engine cylinder head 6, the inlet and outlet cylinder 11 pushes the moving plate 7 to slide along the connecting plate 8 through the connecting block, moving the engine cylinder head 6 to the leak test and cleaning station. The pressing cylinder 3 drives the lifting plate 4 to slide down along the fixed shaft 9. The discharge rack 5 presses the top of the engine cylinder head 6 to fix it. At the same time, the sealing mechanism 14 at the bottom of the lifting plate 4 seals the water channel interface of the engine cylinder head 6. The air intake mechanism 15 is connected to the detection interface. The leak tester electrical box 2 starts the detection program, injects gas at a preset pressure into the engine cylinder head 6 cavity through the air intake mechanism 15, and monitors the pressure change in real time: if the pressure remains stable, the seal is deemed qualified; if the pressure drops beyond the threshold, a leak is deemed to exist, and the alarm device is activated. Then, the lifting cylinder 13 drives the water tank 12 to rise to the working position, so that the cleaning agent inside the water tank 12 submerges the engine cylinder head 6. The user can manually observe the leak location after the cleaning agent has submerged the engine cylinder head 6. The high-pressure water pump 21 is started to draw the cleaning agent filtered by the composite filter plate 17 from the water tank 12 through the pipe, pressurizes it, and delivers it to the flushing spray frame 22. The nozzle of the spray frame performs high-pressure flushing on the surface of the engine cylinder head 6. At the same time, the ultrasonic transducer group 26 at the bottom of the guide plate 16 works, generating high-frequency vibrations that are transmitted to the engine cylinder head 6 through the cleaning agent, removing impurities in the tiny gaps. When the engine cylinder head 6 passes the leak test, it can also be cleaned. The waste liquid generated during cleaning is guided by the guide plate 16 to the composite filter plate 17. The filtered liquid flows back to the bottom of the water tank 12 for recycling. The sound insulation layer 28 reduces the noise of ultrasonic operation. The protective plate 29 protects the pipe on the surface of the flushing spray rack 22. After the leak test is completed, the water tank 12 is returned to its original position, the sealing mechanism 14 and the air intake mechanism 15 are retracted, the pressing cylinder 3 is retracted, and the feeding and discharging cylinder 11 pushes out the moving plate 7 and the engine cylinder head 6.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A water-cooled engine modular head automatic leak detection mechanism comprising a frame (1), characterized in that: The top of the frame (1) is fixedly installed with a leak tester electrical box (2), and the top of the frame (1) is fixedly installed with a clamping cylinder (3). The output end of the clamping cylinder (3) extends into the interior of the frame (1) and is fixedly installed with a lifting plate (4). The bottom of the lifting plate (4) is fixedly installed with a feeding rack (5). The bottom of the feeding rack (5) is provided with an engine cylinder head (6). The bottom of the engine cylinder head (6) is provided with a moving plate (7). The bottom of the moving plate (7) is provided with a connecting plate (8). The four corners of the bottom of the connecting plate (8) are fixedly connected with fixed shafts (9). The lifting plate (4) is slidably connected to the surface of the fixed shafts (9). The top of the fixed shafts (9) is fixedly connected to the top of the inner wall of the frame (1). The surface of the frame (1) and the connecting plate ( 8) The top of each of the components is fixedly equipped with a conveying roller group (10), the surface of which is in contact with the bottom of the moving plate (7). The rear side of the top of the connecting plate (8) is fixedly equipped with an infeed cylinder (11), the output end of which is fixedly installed on the front side of the moving plate (7) through a connecting block. The inside of the frame (1) is equipped with a water tank (12), and both sides of the inside of the frame (1) are fixedly equipped with lifting cylinders (13). The output end of which is fixedly installed on the surface of the water tank (12) through a connecting block. The front side of the bottom left of the lifting plate (4) is fixedly equipped with a sealing mechanism (14), and the rear side of the bottom left of the lifting plate (4) is fixedly equipped with an air intake mechanism (15). The inside of the water tank (12) is equipped with a flushing component.

2. The automatic leak testing mechanism for a modular cylinder head of a water-cooled engine according to claim 1, characterized in that: A guide plate (16) is fixedly connected inside the water tank (12), and a composite filter plate (17) is provided at the bottom of the inner cavity of the water tank (12). A push-out component is provided at the bottom of the composite filter plate (17).

3. The automatic leak testing mechanism for a modular cylinder head of a water-cooled engine according to claim 2, characterized in that: The ejection assembly includes an ejection cylinder (18), which is fixedly installed on the right side of the bottom of the water tank (12). A pad (19) is fixedly connected to the bottom of the composite filter plate (17). The output end of the ejection cylinder (18) extends into the interior of the water tank (12) and is fixedly connected to a push plate (20). The push plate (20) is located inside the pad (19).

4. The automatic leak testing mechanism for a modular cylinder head of a water-cooled engine according to claim 1, characterized in that: The rinsing assembly includes a high-pressure water pump (21), which is fixedly installed at the bottom of the inner wall of the water tank (12). The input end of the high-pressure water pump (21) is connected to the surface of the guide plate (16) through a pipe. A rinsing spray frame (22) is fixedly installed on the surface of the water tank (12), and the output end of the high-pressure water pump (21) is connected to the surface of the rinsing spray frame (22) through a pipe.

5. The automatic leak testing mechanism for a modular cylinder head of a water-cooled engine according to claim 2, characterized in that: The water tank (12) is fixedly connected to a support frame (23), and the top of the support frame (23) is fixedly connected to the bottom of the guide plate (16).

6. The automatic leak testing mechanism for a modular cylinder head of a water-cooled engine according to claim 2, characterized in that: The water tank (12) has a positioning groove (24) inside. The composite filter plate (17) has positioning pulleys (25) fixedly installed on both the front and rear sides. The positioning pulleys (25) are slidably connected inside the positioning groove (24).

7. The automatic leak testing mechanism for a modular cylinder head of a water-cooled engine according to claim 2, characterized in that: An ultrasonic transducer assembly (26) is fixedly installed at the bottom of the guide plate (16), and a limit plate (27) is fixedly installed on the front and rear sides of the top right side of the water tank (12).

8. The automatic leak testing mechanism for a modular cylinder head of a water-cooled engine according to claim 4, characterized in that: The surface of the water tank (12) is fixedly connected to a sound insulation layer (28), and the surface of the water tank (12) is fixedly connected to a protective plate (29). The through pipe on the surface of the flushing spray rack (22) is located inside the protective plate (29).

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