Diesel engine crankcase seal testing apparatus

Abstract

The utility model relates to sealed detection equipment field discloses diesel engine crankcase sealed detection equipment, including water tank, lifting assembly and adsorption subassembly, and the outer wall of water tank is equipped with first mount pad and second mount pad, and adsorption subassembly includes driving part, slider and adsorption accessory, and driving part includes motor, screw rod and screw block, and screw rod rotationally is equipped between first mount pad, and motor is equipped with first mount pad outer wall and is connected with screw rod, and screw block is equipped with screw rod outer wall, and slider includes sliding rod and sliding block, and sliding rod is equipped between second mount pad, and sliding block is equipped with sliding rod outer wall, and adsorption accessory includes floating block, lifting plate and two connecting rods, and lifting plate is opened with lifting hole, and two connecting rods respectively penetrate two lifting holes, and two ends of two connecting rods are fixedly connected with screw block and sliding block respectively, and floating block is equipped with lifting plate lower extreme, and floating block outer wall is wrapped with oil absorption felt, and the oil dirt of liquid level is adsorbed to the oil absorption felt of movement, and it is favorable for staff to observe.

Description

Technical Field

[0001] This utility model relates to the field of sealing testing equipment, specifically to a diesel engine crankcase sealing testing equipment. Background Technology

[0002] The crankcase is a key component of a car engine. Specifically, it refers to the crankshaft mounting area located at the bottom of the cylinder block. The crankcase is a hollow structure that houses the crankshaft. It is connected to the crankshaft connecting rod via the crankshaft and converts the reciprocating motion of the piston into the rotational motion of the crankshaft, thereby driving the vehicle. It is one of the most important components of a car engine, bearing the force transmitted from the connecting rod, converting it into torque, and leading it out through the crankshaft to drive other accessories on the engine.

[0003] Existing technology typically involves immersing the crankcase in a water tank. If there is a leak in the crankcase seal, internal gas will escape from the leak and form continuous bubbles in the water. By observing the location and rate of bubble formation, workers can directly locate the leak and make a preliminary judgment on the extent of the leak. However, during the manufacturing process, a small amount of cutting fluid, rust-preventive oil, or machining oil residue may remain on the surface of the crankcase. During the seal testing process, oil residue will form on the surface of the water in the tank, and as the seal testing continues, the scattered oil residue will form an oil film, seriously affecting the workers' observation and reducing the accuracy of the crankcase seal testing. To address these issues, we have proposed a diesel engine crankcase seal testing device. Utility Model Content

[0004] The present invention aims to provide a diesel engine crankcase sealing testing device to solve the problem that oil stains form on the surface of the water in the water tank, which affects the observation of the operator.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a diesel engine crankcase sealing testing device, comprising a water tank, a lifting assembly, and an adsorption assembly. The lifting assembly is located at the upper end of the water tank and is used to send the crankcase into the water tank for sealing testing. The outer wall of the water tank is symmetrically provided with a first mounting seat and a second mounting seat. The adsorption assembly includes a driving component, a sliding component, and an adsorption component. The driving component is located between the first mounting seats, and the sliding component is located between the second mounting seats. The driving component includes a motor, a screw, and a threaded block. The screw is rotatably located between the first mounting seats, and the motor is located on the outer wall of the first mounting seat, with the output end of the motor fixedly connected to the screw. The threaded block is located on the outer wall of the screw. The sliding component includes a sliding rod and a slider. The sliding rod is located between the second mounting seats, and the slider is slidably located on the outer wall of the sliding rod. The adsorption component includes a floating block, a lifting plate, and two connecting rods. The lifting plate is symmetrically provided with lifting holes, and the two connecting rods pass through the two lifting holes respectively. The two ends of the two connecting rods are fixedly connected to the threaded block and the slider respectively. The floating block is located at the lower end of the lifting plate, and the outer wall of the floating block is wrapped with an oil-absorbing felt.

[0006] The beneficial effects of this solution are as follows: the floating block can float on the liquid surface, and under the action of the lifting plate, the floating block can be adjusted according to the height of the liquid level in the water tank, ensuring that the oil-absorbing felt is always in contact with the liquid surface. The oil-absorbing felt can absorb the dispersed oil droplets or oil film on the liquid surface, preventing oil stains or oil films from obscuring the bubbles generated by the leak, and eliminating blind spots during manual observation. After the crankcase sealing test is completed, the crankcase is pulled out of the water tank under the action of the lifting component, and oil stains will appear on the liquid surface in the water tank. The driving component and the sliding component are connected by two connecting rods, and under the action of the driving component, the connecting rods are driven to move back and forth in the water tank, thereby driving the adsorption component to adsorb the liquid surface in the water tank, reducing the oil stains on the liquid surface, making it easier for the staff to observe the crankcase, improving the accuracy of the sealing test. The two connecting rods are used to prevent the adsorption component from tipping over during the movement, improving the stability of the adsorption component's movement.

[0007] Preferably, as an improvement, the lifting plate has an adjustment groove in the middle, and the adjustment groove is connected to two lifting holes. An adjustment component is provided in the adjustment groove, which includes a guide rod, a tension spring and a connecting block. The guide rod is located in the adjustment groove, and the two ends of the connecting block are respectively connected to the two connecting rods. The guide rod passes through the connecting block, and the tension spring is located between the connecting block and the adjustment groove. The tension spring is sleeved on the outer wall of the guide rod.

[0008] The beneficial effects are as follows: After the crankcase completes the sealing test, the lifting assembly pulls the crankcase out of the water tank. During this process, the liquid level in the water tank will fluctuate and drop. At this time, the float moves downward under the action of the tension spring, realizing flexible displacement in the vertical direction, ensuring that the float always fits tightly against the liquid surface and will not have a dead angle of adsorption due to changes in the liquid level.

[0009] Preferably, as an improvement, the lifting assembly includes a base, a mounting bracket, a hydraulic cylinder, and a lifting frame. The mounting bracket is located on the upper end of the base, the hydraulic cylinder is located on the upper end of the mounting bracket, and the output end of the hydraulic cylinder passes through the mounting bracket. The output end of the hydraulic cylinder is provided with a lifting plate, and the lifting frame is located at the end of the lifting plate away from the mounting bracket. The lifting frame is used to load the crankcase.

[0010] The beneficial effects are as follows: the lifting frame is used to load the crankcase, and the frame structure facilitates the observation of the crankcase. The lifting frame is raised and lowered by the hydraulic cylinder, so that the crankcase loaded in the lifting frame can be immersed in or pulled out of the water tank, thereby improving the detection efficiency of crankcase sealing test.

[0011] Preferably, as an improvement, the lifting assembly further includes two sets of guide members, which are symmetrically arranged on both sides of the mounting frame. Each guide member includes a guide plate, two clamping plates, and guide wheels. The two clamping plates are symmetrically arranged on both sides of the mounting frame, and the two guide wheels are rotatably disposed within the clamping plates. The guide plates are located on the outer wall of the lifting frame, and both guide wheels abut against the outer wall of the guide plate.

[0012] The beneficial effects are as follows: Two sets of guide components are symmetrically distributed on both sides of the mounting frame, which can form a rigid limit on the lifting trajectory of the lifting frame. When the hydraulic cylinder drives the lifting frame to lift, the guide plate moves vertically along the rolling trajectory of the guide wheel, avoiding horizontal swaying and tilting of the lifting frame during the lifting process.

[0013] Preferably, as an improvement, the outer wall of the mounting bracket is provided with an air intake pipe, one end of which is provided with an air pump, and the other end of which is provided with a flexible hose that can be connected to the crankcase.

[0014] The beneficial effects are as follows: the air pump pressurizes the crankcase with air through the air intake pipe and hose. If there is a leak in the crankcase seal, the internal gas will overflow from the leak and form continuous bubbles in the water. By observing the location and rate of bubble formation, the staff can directly locate the leak and make a preliminary judgment on the degree of leakage.

[0015] Preferably, as an improvement, the hose is configured as a spring.

[0016] The beneficial effects are: by setting the hose in a spring shape, the hose can be stretched or contracted with the lifting assembly, so that the extension and contraction stroke of the hose can cover the entire stroke range of the lifting frame, and the hose can be prevented from twisting or knotting during the extension and contraction process. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the detection device according to an embodiment of the present invention; Figure 2 This is a bottom-view three-dimensional structural diagram of the detection equipment according to an embodiment of the present invention; Figure 3 This is a three-dimensional structural diagram of the adsorption component according to an embodiment of the present invention; Figure 4 This is a cross-sectional view of the adsorption component according to an embodiment of the present invention; Figure 5 This is a cross-sectional view of the lifting plate in an embodiment of the present invention. Detailed Implementation

[0018] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: base 1, water tank 2, mounting bracket 3, oil cylinder 4, lifting plate 5, lifting frame 6, guide plate 7, clamping plate 8, guide wheel 9, air inlet pipe 10, hose 11, first mounting seat 12, second mounting seat 13, motor 14, screw 15, threaded block 16, slide rod 17, slider 18, lifting plate 19, lifting hole 20, connecting rod 21, floating block 22, oil-absorbing felt 23, adjusting groove 24, guide rod 25, tension spring 26, connecting block 27.

[0019] Example The basic implementation examples are as follows: Figures 1-5 As shown, Figure 1 The diesel engine crankcase sealing testing equipment shown includes a water tank 2, a lifting assembly, and an adsorption assembly. The lifting assembly is used to send the crankcase into the water tank 2 for sealing testing. The lifting assembly includes a base 1, a mounting bracket 3, a hydraulic cylinder 4, and a lifting frame 6. The water tank 2 is placed in the middle of the upper end of the base 1. The mounting bracket 3 is fixedly installed on the upper end of the base 1. The hydraulic cylinder 4 is fixedly installed on the upper end of the mounting bracket 3, and the output end of the hydraulic cylinder 4 passes through the mounting bracket 3. Figure 2 A lifting plate 5 is fixedly installed at the output end of the hydraulic cylinder 4 shown. A lifting frame 6 is fixed at the lower end of the lifting plate 5. The lifting frame 6 is used to load the crankcase. The lifting frame 6 is designed as a frame structure to facilitate the operator's observation of the crankcase. Figure 1 The lifting assembly shown also includes two sets of guide members, which are symmetrically fixedly installed on the left and right sides of the mounting frame 3. The guide members include a guide plate 7, two clamping plates 8, and guide wheels 9. The two clamping plates 8 are symmetrically fixedly installed at the front and rear ends of the mounting frame 3. The two guide wheels 9 are rotatably installed inside the clamping plates 8. The guide plate 7 is fixedly installed on the outer wall of the lifting frame 6, and the two guide wheels 9 are in contact with the outer wall of the guide plate 7. An air inlet pipe 10 is fixedly installed on the outer wall of the mounting frame 3. The lower end of the air inlet pipe 10 is connected to an air pump, and the upper end of the air inlet pipe 10 is connected to a hose 11. The lower end of the hose 11 can be connected to the crankcase. The hose 11 is spring-shaped.

[0020] like Figure 1 A first mounting base 12 is fixedly installed on the front outer wall of the water tank 2, and a second mounting base 13 is fixedly installed on the rear outer wall of the water tank 2. The adsorption assembly includes a driving component, a sliding component, and an adsorption component. The driving component is located between the first mounting bases 12, and the sliding component is located between the second mounting bases 13. The driving component includes a motor 14, a screw 15, and a threaded block 16. The screw 15 is rotatably mounted between the first mounting bases 12. The motor 14 is fixedly installed on the left outer wall of the first mounting base 12, and the output end of the motor 14 is fixedly connected to the screw 15. The threaded block 16 is threadedly connected to the outer wall of the screw 15. Figure 3 The sliding component shown includes a slide rod 17 and a slider 18. The slide rod 17 is fixedly installed between the second mounting bases 13, and the slider 18 is slidably installed on the outer wall of the slide rod 17. The adsorption component includes a floating block 22, a lifting plate 5, and two connecting rods 21. The lifting plate 5 is made of rigid foam, such as... Figure 4 The lifting plate 5 shown has symmetrical lifting holes 20, and two connecting rods 21 pass through the two lifting holes 20 respectively. Figure 3 The two connecting rods 21 shown are bent into an "n" shape at both ends, and the two ends of the two connecting rods 21 are fixedly connected to the upper ends of the threaded block 16 and the slider 18, respectively. The floating block 22 is fixedly installed at the lower end of the lifting plate 5, and the outer wall of the floating block 22 is wrapped with an oil-absorbing felt 23.

[0021] like Figure 4 and Figure 5 The lifting plate 5 shown has an adjustment groove 24 in the middle, and the adjustment groove 24 is connected to two lifting holes 20. An adjustment component is provided inside the adjustment groove 24, including a guide rod 25, a tension spring 26, and a connecting block 27. The guide rod 25 is fixedly installed inside the adjustment groove 24. Figure 4 The connecting block 27 shown is connected to the outer walls of the two connecting rods 21 at its left and right ends respectively, and the guide rod 25 passes through the connecting block 27. The tension spring 26 is fixedly installed between the connecting block 27 and the adjusting groove 24, and the tension spring 26 is sleeved on the outer wall of the guide rod 25. The tension of the tension spring 26 is less than the buoyancy of the floating block 22 on the liquid surface.

[0022] The specific implementation process is as follows: After the crankcase sealing test is completed, the crankcase is pulled out of the water tank 2 by the lifting assembly. During this process, the liquid level in the water tank 2 will fluctuate and drop. At this time, the float block 22 moves downward under the action of the tension spring 26 to achieve flexible vertical displacement, ensuring that the float block 22 is always in close contact with the liquid surface and will not have a dead angle of adsorption due to changes in liquid level. Under the action of the drive component, the connecting rod 21 is driven to move back and forth in the water tank 2, thereby driving the adsorption component to adsorb the oil stains on the liquid surface of the water tank 2, thereby reducing the oil stains and oil film on the liquid surface, making it easier for the staff to observe the crankcase and improving the accuracy of the sealing test.

[0023] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A diesel engine crankcase seal testing device, characterized in that: The device includes a water tank, a lifting assembly, and an adsorption assembly. The lifting assembly is located at the top of the water tank and is used to send the crankcase into the water tank for sealing testing. The outer wall of the water tank is symmetrically provided with a first mounting seat and a second mounting seat. The adsorption assembly includes a driving component, a sliding component, and an adsorption component. The driving component is located between the first mounting seats, and the sliding component is located between the second mounting seats. The driving component includes a motor, a screw, and a threaded block. The screw rotates between the first mounting seats, and the motor is located on the outer wall of the first mounting seat, with the output end of the motor fixedly connected to the screw. The threaded block is located on the outer wall of the screw. The sliding component includes a sliding rod and a slider. The sliding rod is located between the second mounting seats, and the slider slides on the outer wall of the sliding rod. The adsorption assembly includes a float block, a lifting plate, and two connecting rods. The lifting plate has symmetrically opened lifting holes, and the two connecting rods pass through the two lifting holes respectively. The two ends of the two connecting rods are fixedly connected to the threaded block and the slider respectively. The float block is located at the bottom of the lifting plate, and the outer wall of the float block is covered with an oil-absorbing felt.

2. The diesel engine crankcase seal testing equipment according to claim 1, characterized in that: An adjustment groove is provided in the middle of the lifting plate, and the adjustment groove is connected to two lifting holes. An adjustment component is provided in the adjustment groove, which includes a guide rod, a tension spring and a connecting block. The guide rod is located in the adjustment groove, and the two ends of the connecting block are respectively connected to the two connecting rods. The guide rod passes through the connecting block, and the tension spring is located between the connecting block and the adjustment groove. The tension spring is sleeved on the outer wall of the guide rod.

3. The diesel engine crankcase seal testing equipment according to claim 2, characterized in that: The lifting assembly includes a base, a mounting bracket, a hydraulic cylinder, and a lifting frame. The mounting bracket is located on the upper end of the base, the hydraulic cylinder is located on the upper end of the mounting bracket, and the output end of the hydraulic cylinder passes through the mounting bracket. The output end of the hydraulic cylinder is provided with a lifting plate, and the lifting frame is located at the end of the lifting plate away from the mounting bracket. The lifting frame is used to load the crankcase.

4. The diesel engine crankcase seal testing equipment according to claim 3, characterized in that: The lifting assembly also includes two sets of guide members, which are symmetrically arranged on both sides of the mounting frame. Each guide member includes a guide plate, two clamping plates, and guide wheels. The two clamping plates are symmetrically arranged on both sides of the mounting frame, and the two guide wheels are rotatably located inside the clamping plates. The guide plates are located on the outer wall of the lifting frame, and both guide wheels abut against the outer wall of the guide plate.

5. The diesel engine crankcase seal testing equipment according to claim 4, characterized in that: The mounting bracket has an air intake pipe on its outer wall. One end of the air intake pipe is equipped with an air pump, and the other end is equipped with a flexible hose that can be connected to the crankcase.

6. The diesel engine crankcase seal testing equipment according to claim 5, characterized in that: The hose is designed to be spring-like.

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