Crankcase airtightness detection equipment

Abstract

The utility model discloses crankcase airtightness detection equipment, which belongs to the technical field of crankcase detection, and comprises a bottom plate, the top of the bottom plate is fixedly connected with two symmetrically distributed support frames, the top of the bottom plate is fixedly provided with a water tank, a transfer frame is arranged between the two support frames, the outer side of the transfer frame is provided with a lifting plate, and the lifting plate is fixedly connected with the bottom plate. The lifting plate is located above the water tank, and the lifting assembly can achieve accurate adjustment of the height of the lifting plate and the crank case placed on the lifting plate through precise cooperation of a pushing air cylinder, a connecting belt, an installation frame and a rotating wheel. The accurate adjustment ensures that the crankcase can be steadily and accurately immersed into the water tank, so that the accuracy of air tightness detection is improved, the stability and balance are considered in the design of the lifting assembly, the stability of the lifting plate in the lifting process is ensured through the cooperative use of a rotating wheel and a connecting belt in the mounting frame, and the detection accuracy is improved. And damage to the crankcase or equipment caused by shaking or inclination is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of crankcase detection, and more specifically, to a crankcase airtightness detection device. Background Technique

[0002] The crankcase is a key component in an automotive engine. Specifically, it refers to the engine crankshaft installation part located at the lower part of the cylinder block. The crankcase is a cavity structure that houses the crankshaft and is connected to the crankshaft connecting rod through a crank, converting the reciprocating motion of the piston into the rotational motion of the crankshaft to drive the vehicle. It is one of the most important components of an automotive engine, bearing the force transmitted by the connecting rod, converting it into torque, and leading it out through the crankshaft to drive other accessories on the engine.

[0003] The patent with the publication number CN216978278U discloses a crankcase airtightness detection device, which relates to the technical field of crankcase detection devices. It includes a bottom plate. A motor and a gear are arranged on the top of the bottom plate through a bracket. A first sliding rod is fixedly installed on the right side of the bracket. A lifting frame is arranged on the first sliding rod. A lifting device is fixedly installed on the right side of the lifting frame. A clamping device and an inflation device are rotatably arranged on the lifting device through a rotating shaft. A water tank is arranged on the bottom plate. This utility model uses a liftable detection device to fix the crankcase and its rotatable feature, reducing the operation difficulty and avoiding waste of human resources. The clamping device with adjustable size enables it to better meet the actual needs of different-sized crankcases during airtightness detection, ensuring the quality and efficiency of crankcase airtightness detection.

[0004] Although this device has many beneficial effects, there are still the following problems: Although this detection device ensures the quality and efficiency of crankcase airtightness detection, during airtightness detection, if the crankcase shakes or its position shifts during the detection process, it may cause the detection instrument to be unable to accurately measure the leakage amount, thus affecting the reliability of the detection results. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a crankcase airtightness detection device to solve the above problems.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: A crankcase airtightness detection device includes a bottom plate. Two symmetrically distributed support frames are fixedly connected to the top of the bottom plate. A water tank is fixedly installed on the top of the bottom plate. A transfer frame is arranged between the two support frames. A lifting plate is arranged outside the transfer frame. The lifting plate is located above the water tank. It further includes:

[0007] A lifting assembly, which is located between two support frames and connected to a lifting plate, is used to adjust the height of the lifting plate, and thus the crankcase located on the lifting plate can be placed into the water tank;

[0008] A clamping assembly, which is located on the outer surface of the lifting plate, is used to fix the crankcase on the lifting plate.

[0009] Preferably, a connecting column is fixedly connected to the outer surface of the adapter frame. The connecting column is arranged in an L-shaped structure and is fixedly connected to the outer surface of the lifting plate.

[0010] Preferably, the lifting assembly includes a pushing cylinder, a connecting belt, a mounting frame and a rotating wheel. A pushing cylinder is fixedly installed on the top of the bottom plate. The output end of the pushing cylinder is fixedly connected to the mounting frame. The mounting frame is arranged in a "U" shape. A rotating wheel is fixedly connected inside the mounting frame. A connecting belt is sleeved on the outer surface of the rotating wheel. One end of the connecting belt is fixedly connected to the top of the lifting plate, and the other end of the connecting belt is fixedly connected to the top of the bottom plate.

[0011] Preferably, two rollers are rotatably connected to the outer surfaces of both sides of the adapter frame, and both rollers are in rolling connection with the outer surface of the support frame.

[0012] Preferably, the clamping assembly includes a connecting block, a bidirectional threaded rod, a clamping block and a handle. Two connecting blocks are fixedly connected to the front and rear outer surfaces of the lifting plate respectively. A bidirectional threaded rod is rotatably connected between the two connecting blocks on the same side. Two symmetrically distributed clamping blocks are threadedly sleeved on the outer surfaces of the two bidirectional threaded rods. All four clamping blocks are arranged in an L-shaped structure. Handles are rotatably connected to the outer surfaces of the front and rear connecting blocks respectively. The two handles are fixedly connected to the corresponding bidirectional threaded rods.

[0013] Preferably, two rectangular grooves are formed in the top of the lifting plate, and two moving blocks are slidably connected to the interiors of the two rectangular grooves respectively. The four moving blocks are fixedly connected to the corresponding clamping blocks.

[0014] Preferably, the bidirectional threaded rod at the rear passes through the interior of the connecting column.

[0015] Compared with the prior art, the present utility model provides a crankcase airtight detection device, which has the following beneficial effects:

[0016] This kind of crankcase airtightness detection equipment. The lifting component can achieve precise adjustment of the height of the lifting plate and the crankcase placed on it through the precise cooperation of the pushing cylinder, connecting belt, mounting frame and rotating wheel. This adjustment ensures that the crankcase can be immersed in the water tank smoothly and accurately, thereby improving the accuracy of airtightness detection. The design of the lifting component takes into account stability and balance. Through the combined use of the rotating wheel inside the mounting frame and the connecting belt, the smoothness of the lifting plate during lifting is ensured, avoiding damage to the crankcase or the equipment itself due to shaking or tilting. At the same time, the rolling engagement of the rollers on the outer surface of the support frame further enhances the stability of the transfer frame and the lifting plate during movement.

[0017] This kind of crankcase airtightness detection equipment. The clamping component can achieve firm clamping of the crankcase through the precise cooperation of the bidirectional threaded rod, clamping block and handle. This clamping method ensures that the crankcase will not affect the accuracy of the detection result due to shaking or tilting during the detection process, and at the same time avoids the risk of the crankcase falling off or being damaged during lifting. The design of the clamping component has a certain degree of flexibility and can adapt to crankcases of different sizes and shapes. By adjusting the rotation direction and degree of the bidirectional threaded rod, the distance between the clamping blocks can be easily changed, so as to achieve clamping of crankcases of different sizes. The clamping block is arranged in an L-shaped structure, which can better fit the contour of the crankcase and improve the stability and reliability of clamping. Brief Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the present utility model;

[0019] Figure 2 It is the present utility model Figure 1 The enlarged view of the structure at A in the figure;

[0020] Figure 3 It is a side view of the structure of the present utility model;

[0021] Figure 4 It is a schematic structural diagram of the moving block of the present utility model.

[0022] In the figure: 1, bottom plate; 2, support frame; 3, water tank; 4, transfer frame; 5, lifting plate; 6, roller; 7, pushing cylinder; 8, connecting belt; 9, connecting block; 10, bidirectional threaded rod; 11, clamping block; 12, rectangular groove; 13, handle; 14, mounting frame; 15, rotating wheel; 16, connecting column; 17, moving block. Detailed Description of the Preferred Embodiment

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1-4 , the present utility model provides a technical solution:

[0025] A crankcase airtight detection device includes a bottom plate 1. Two symmetrically distributed support frames 2 are fixedly connected to the top of the bottom plate 1. A water tank 3 is fixedly installed on the top of the bottom plate 1. A transfer frame 4 is arranged between the two support frames 2. A lifting plate 5 is arranged outside the transfer frame 4. The lifting plate 5 is located above the water tank 3. It further includes:

[0026] A lifting assembly, which is located between the two support frames 2 and is connected to the lifting plate 5, is used to adjust the height of the lifting plate 5, and thus the crankcase located on the lifting plate 5 can be placed into the water tank 3.

[0027] A clamping assembly, which is located on the outer surface of the lifting plate 5, is used to fix the crankcase on the lifting plate 5. The staff smoothly places the crankcase to be detected at the top position of the lifting plate 5.

[0028] Furthermore, a connecting column 16 is fixedly connected to the outer surface of the transfer frame 4. The connecting column 16 is arranged in an L-shaped structure. The connecting column 16 is fixedly connected to the outer surface of the lifting plate 5. The arrangement of the connecting column 16 facilitates the lifting plate 5 to enter the water tank 3.

[0029] Furthermore, the lifting assembly includes a pushing cylinder 7, a connecting belt 8, a mounting frame 14, and a runner 15. The pushing cylinder 7 is fixedly installed on the top of the bottom plate 1. The output end of the pushing cylinder 7 is fixedly connected to the mounting frame 14. The mounting frame 14 is arranged in a "U" shape. A runner 15 is fixedly connected inside the mounting frame 14. The outer surface of the runner 15 is sleeved with the connecting belt 8. One end of the connecting belt 8 is fixedly connected to the top of the lifting plate 5, and the other end of the connecting belt 8 is fixedly connected to the top of the bottom plate 1. When the pushing cylinder 7 is started, the output end of the pushing cylinder 7 pushes the mounting frame 14 to move downward. Since the runner 15 is fixedly installed inside the mounting frame 14 and the runner 15 is connected to the top of the lifting plate 5 through the connecting belt 8, when the mounting frame 14 descends, the connecting belt 8 will wind around the runner 15 and drive the lifting plate 5 and the crankcase thereon to descend together.

[0030] Furthermore, two rollers 6 are rotatably connected to the outer surfaces on both sides of the adapter bracket 4, and both of the two rollers 6 are in rolling connection with the outer surface of the support bracket 2. The rollers 6 are in rolling engagement with the outer surface of the support bracket 2, which helps the stable movement of the adapter bracket 4 and the lifting plate 5.

[0031] Furthermore, the clamping assembly includes a connecting block 9, a bidirectional threaded rod 10, clamping blocks 11 and a handle 13. Two connecting blocks 9 are fixedly connected to the front and rear outer surfaces of the lifting plate 5 respectively. A bidirectional threaded rod 10 is rotatably connected between the two connecting blocks 9 on the same side. Two symmetrically distributed clamping blocks 11 are threadedly sleeved on the outer surfaces of the two bidirectional threaded rods 10. The four clamping blocks 11 are all arranged in an L-shaped structure. Handles 13 are rotatably connected to the outer surfaces of the two connecting blocks 9 at the front and rear respectively. The two handles 13 are fixedly connected to the corresponding bidirectional threaded rods 10. Rotating the handle 13 will drive the bidirectional threaded rod 10 to rotate, and the rotation of the bidirectional threaded rod 10 causes the two symmetrically distributed clamping blocks 11 to move towards each other along the thread direction.

[0032] Furthermore, two rectangular grooves 12 are formed in the top of the lifting plate 5. Two moving blocks 17 are slidably connected to the interiors of the two rectangular grooves 12. The four moving blocks 17 are fixedly connected to the corresponding clamping blocks 11. Since the clamping blocks 11 are fixedly connected to the moving blocks 17 and the moving blocks 17 slide in the rectangular grooves 12, the clamping blocks 11 can move stably and firmly clamp the crankcase on the lifting plate 5.

[0033] Furthermore, the bidirectional threaded rod 10 at the rear passes through the interior of the connecting column 16, which does not interfere with the operation of the bidirectional threaded rod 10 at the rear.

[0034] Working principle: When the staff needs to use this crankcase airtightness detection device, the staff places the crankcase to be detected steadily on the top of the lifting plate 5, and then rotates the handle 13. Since the handle 13 is fixedly connected to the bidirectional threaded rod 10, rotating the handle 13 will drive the bidirectional threaded rod 10 to rotate. The rotation of the bidirectional threaded rod 10 causes two symmetrically distributed clamping blocks 11 to move towards each other along the thread direction. Since the clamping block 11 is fixedly connected to the moving block 17 and the moving block 17 slides in the rectangular groove 12, the clamping block 11 can move steadily and firmly clamp the crankcase on the lifting plate 5. After the crankcase is fixed by the clamping assembly, start the pushing cylinder 7. The output end of the pushing cylinder 7 pushes the mounting frame 14 downward. Since the runner 15 is fixed inside the mounting frame 14 and the runner 15 is connected to the top of the lifting plate 5 through the connecting belt 8, when the mounting frame 14 descends, the connecting belt 8 will wind around the runner 15 and drive the lifting plate 5 and the crankcase on it to descend together. The roller 6 rolls and engages with the outer surface of the support frame 2, which helps the transfer frame 4 and the lifting plate 5 to move smoothly. As the lifting plate 5 descends, the crankcase gradually immerses in the water tank 3 to prepare for the airtightness detection. After the crankcase immerses in the water tank 3, check whether there are bubbles generated in the water tank 3 to judge the airtightness of the crankcase. If the crankcase is well sealed, no bubbles will emerge; if bubbles are found, it indicates that there is a leak in the crankcase and further inspection and repair are needed. After the detection is completed, operate the pushing cylinder 7 in reverse to make the lifting plate 5 and the crankcase rise back to the original position, rotate the handle 13 in reverse to loosen the clamping block 11 from the crankcase, and then remove the crankcase from the lifting plate 5.

[0035] The above shows and describes the basic principle, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An airtight detection device for a crankcase, comprising a bottom plate (1), and two symmetrically distributed support frames (2) fixedly connected to the top of the bottom plate (1), characterized in that: A water tank (3) is fixedly installed on the top of the bottom plate (1). A transfer frame (4) is arranged between the two support frames (2). A lifting plate (5) is arranged outside the transfer frame (4). The lifting plate (5) is located above the water tank (3). It further includes: A lifting assembly, which is located between the two support frames (2) and is connected to the lifting plate (5), and is used to adjust the height of the lifting plate (5), so that the crankcase located on the lifting plate (5) can be placed into the water tank (3); A clamping assembly, which is located on the outer surface of the lifting plate (5) and is used to fix the crankcase on the lifting plate (5).

2. The airtight detection device for a crankcase according to claim 1, wherein: A connecting column (16) is fixedly connected to the outer surface of the transfer frame (4). The connecting column (16) is arranged in an L-shaped structure, and the connecting column (16) is fixedly connected to the outer surface of the lifting plate (5).

3. The airtight detection device for a crankcase according to claim 1, characterized in that: The lifting assembly includes a pushing cylinder (7), a connecting belt (8), a mounting frame (14) and a rotating wheel (15). A pushing cylinder (7) is fixedly installed on the top of the bottom plate (1). The output end of the pushing cylinder (7) is fixedly connected to a mounting frame (14). The mounting frame (14) is arranged in a "U" shape. A rotating wheel (15) is fixedly connected inside the mounting frame (14). A connecting belt (8) is sleeved on the outer surface of the rotating wheel (15). One end of the connecting belt (8) is fixedly connected to the top of the lifting plate (5), and the other end of the connecting belt (8) is fixedly connected to the top of the bottom plate (1).

4. An airtight detection device for a crankcase according to claim 1, characterized in that: Two rollers (6) are rotatably connected to the outer surfaces on both sides of the transfer frame (4). Both of the two rollers (6) are in rolling connection with the outer surface of the support frame (2).

5. The airtight detection device for a crankcase according to claim 1, characterized in that: The clamping assembly includes connecting blocks (9), a bidirectional threaded rod (10), clamping blocks (11) and a handle (13). Two connecting blocks (9) are fixedly connected to the front and rear outer surfaces of the lifting plate (5). A bidirectional threaded rod (10) is rotatably connected between the two connecting blocks (9) on the same side. Two symmetrically distributed clamping blocks (11) are threadedly sleeved on the outer surfaces of the two bidirectional threaded rods (10). All four clamping blocks (11) are arranged in an L-shaped structure. Handles (13) are rotatably connected to the outer surfaces of the front and rear two connecting blocks (9). The two handles (13) are fixedly connected to the corresponding bidirectional threaded rods (10).

6. The airtight detection device for a crankcase according to claim 5, characterized in that: Two rectangular grooves (12) are formed in the top of the lifting plate (5). Two moving blocks (17) are slidably connected inside the two rectangular grooves (12). The four moving blocks (17) are fixedly connected to the corresponding clamping blocks (11).

7. The airtight detection device for a crankcase according to claim 5, characterized in that: The bidirectional threaded rod (10) at the rear passes through the inside of the connecting column (16).

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