Integrated clamp device for detecting air tightness of automobile radiator

Abstract

The utility model belongs to the technical field of clamps, and particularly relates to an automobile radiator air tightness detection integrated clamp device which comprises a water tank, the left side and the right side of the water tank are fixedly connected with supporting blocks, hydraulic cylinders are fixedly installed at the upper ends of the supporting blocks, and the tail ends of telescopic shafts of the hydraulic cylinders are fixedly connected with a top plate. Two sliding columns are slidably connected into the top plate and penetrate through the top plate, the upper ends of the sliding columns are fixedly connected with limiting plates, the upper sections of column bodies of the sliding columns are sleeved with first springs, the lower ends of the sliding columns are fixedly connected with adjusting bases, and first motors are fixedly installed on the right sides of the adjusting bases. The second motor drives the L-shaped rod to periodically abut against the inclined face base, the radiator is driven to repeatedly ascend and descend in the water tank, the real driving vibration environment is simulated, the air tightness detection accuracy is improved, and particularly hidden dangers such as weld microcracks which are difficult to find in static detection can be exposed.

Description

Technical Field

[0001] This solution belongs to the field of fixtures, specifically involving an integrated fixture device for testing the air tightness of automotive radiators. Background Technology

[0002] The car radiator is a core component of the vehicle's cooling system, and its airtightness directly affects the engine's heat dissipation efficiency and operational stability. Traditional airtightness testing methods mainly include water immersion leak detection and air pressure leak detection.

[0003] A search revealed a utility model patent with authorization announcement number CN209542003U, which discloses a detachable automotive radiator airtightness testing fixture, belonging to the field of automotive parts testing technology. One side of the pressure block has a slot, and the other side has an air duct; the slot cooperates with the outer sides of the two core positioning plates of the radiator; the positioning component includes a base plate, limit clips, and adjusting screws; the base plate is evenly provided with several limit clips, which are U-shaped.

[0004] In existing technologies, conventional water immersion testing can only observe static bubbles and cannot simulate the vibration conditions of a vehicle in motion. In addition, the high humidity of the testing environment makes the threaded parts of the fixture prone to corrosion, leading to adjustment stagnation. Utility Model Content

[0005] The purpose of this solution is to provide an integrated fixture device for testing the air tightness of automotive radiators, in order to solve the problem that conventional water immersion testing can only observe static bubbles and cannot simulate the vibration conditions of a vehicle in motion. At the same time, it also solves the problem that the high humidity of the testing environment makes the threaded parts of the fixture prone to corrosion, leading to adjustment sticking.

[0006] To achieve the above objectives, this solution provides an integrated fixture device for testing the airtightness of automotive radiators, including a water tank. Support blocks are fixedly connected to both sides of the water tank. A hydraulic cylinder is fixedly installed at the upper end of each support block. A top plate is fixedly connected to the end of the telescopic shaft of the hydraulic cylinder. Two sliding columns are slidably connected inside the top plate, and the sliding columns penetrate the top plate. A limit plate is fixedly connected to the upper end of each sliding column. A spring is sleeved on the upper section of the column body. An adjusting seat is fixedly connected to the lower end of the sliding column. A motor is fixedly installed on the right side of the adjusting seat. The output shaft of the motor penetrates the adjusting seat and is connected to it via a bearing. A bidirectional screw is fixedly connected to the end of the output shaft of the motor. Two adjusting blocks are threadedly connected to the outer side of the bidirectional screw, and the adjusting blocks are slidably connected inside the adjusting seat. A self-lubricating mechanism is provided inside each adjusting block.

[0007] The principle of this solution is as follows: During use, the car radiator to be tested is first connected to the air inlet pipe and placed at the two hooks. Then, motor one drives the bidirectional screw to rotate, causing the two adjusting blocks to move towards or away from each other until the hooks align with the mounting holes of the car radiator. The radiator is then mounted. Subsequently, the hydraulic cylinder pulls down the top plate, allowing the car radiator to enter the water tank for airtightness testing. During the test, motor two drives the L-shaped rod to periodically contact the inclined seat, causing the radiator to repeatedly rise and fall within the water tank, simulating a real driving vibration environment and improving the accuracy of airtightness testing. This is especially effective in exposing hidden dangers that are difficult to detect through static testing, such as micro-cracks in welds. Furthermore, when the adjusting blocks reset, the collision between the sliding pin and the protrusion triggers the pressure plate to press down the oil reservoir sponge and release a small amount of lubricating oil. The lubricating oil precisely lubricates the threads of the bidirectional screw through the through-hole and oil outlet, reducing the risk of corrosion and allowing the fixture to be used continuously.

[0008] The technical effect of this solution is that by periodically driving the L-shaped rod of the electric motor to contact the inclined seat, the radiator is driven to rise and fall repeatedly in the water tank, simulating the vibration environment of real driving, improving the accuracy of air tightness detection, and in particular, exposing hidden dangers that are difficult to detect by static inspection, such as micro-cracks in welds.

[0009] By setting a self-lubricating mechanism between the bidirectional screw used to clamp the car radiator and the adjusting block, the self-lubricating mechanism utilizes the collision between the sliding pin and the protrusion when the adjusting block is reset to trigger the pressure plate to press down the oil storage sponge and release a small amount of lubricating oil. The lubricating oil precisely lubricates the threads of the bidirectional screw through the through hole and the oil outlet hole, reducing the risk of rust and thus enabling the fixture to be used continuously.

[0010] Furthermore, a connecting sleeve is fixedly connected to the bottom of the adjusting block, and a convex rotating block is rotatably connected inside the connecting sleeve. A hook is fixedly connected to the bottom of the convex rotating block. The hook can rotate through the convex rotating block, which increases its flexibility and allows the hook to be better attached to the mounting holes of the car radiator.

[0011] Furthermore, one end of the first spring is fixedly connected to the limiting plate, and the other end of the first spring is fixedly connected to the upper end of the top plate. By using the first spring, the reaction force can be applied to the adjusting seat through the limiting plate.

[0012] Furthermore, a ramp seat is fixedly connected to the upper center of the adjusting seat, and a second motor is fixedly installed at the lower center of the top plate. A rotating shaft is fixedly connected to the end of the output shaft of the second motor, and an L-shaped rod is fixedly connected to the shaft body of the rotating shaft. The arc end of the L-shaped rod abuts against the ramp surface of the ramp seat. The rotating shaft is driven to rotate by the second motor, which in turn drives the L-shaped rod to rotate on the ramp surface of the ramp seat. This causes the adjusting seat and its components to be periodically pushed downward, thereby causing the suspended car radiator to periodically rise and fall within the water tank, simulating airtightness testing under vibration conditions and providing accurate test results.

[0013] Furthermore, the self-lubricating mechanism includes a hollow plate fixedly connected inside the adjusting block. The hollow plate has a through hole that penetrates the entire plate. An oil-retaining sponge contacts the upper center of the hollow plate, and the position of the oil-retaining sponge corresponds to the position of the through hole. A sliding pin is slidably connected to the top of the adjusting block, penetrating the entire block. One end of the sliding pin abuts against the inner top of the adjusting seat, and the other end is fixedly connected to a pressure plate, which abuts against the top of the oil-retaining sponge. A second spring is sleeved on the outer side of the sliding pin, with one end fixedly connected to the pressure plate and the other end fixedly connected to the inner surface of the adjusting block. A protrusion is fixedly connected to the inner top of the adjusting seat, and the position of the protrusion corresponds to the end position of the sliding pin. This self-lubricating mechanism provides automatic lubrication after the adjusting block is reset, reducing the impact of moisture corrosion on the threaded connection between the bidirectional screw and the adjusting block.

[0014] Furthermore, two sliding rods are fixedly connected to the lower edge of the pressure plate. These sliding rods penetrate the hollow plate and are slidably connected to it. A baffle is fixedly connected to the end of each sliding rod, contacting the bottom of the hollow plate. The position of the baffle corresponds to the position of the through hole. The baffle can block the through hole in the hollow plate, and it can move downwards with the pressure plate.

[0015] Furthermore, the adjusting block has an oil outlet hole inside, the position of which corresponds to the position of the bidirectional screw. The oil outlet hole ensures that lubricating oil is accurately added to the threaded connection between the bidirectional screw and the adjusting block. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0017] Figure 2 This is an embodiment of the present utility model. Figure 1 A partial structural diagram;

[0018] Figure 3 This is an embodiment of the present utility model. Figure 1 A front sectional view;

[0019] Figure 4 This is an embodiment of the present utility model. Figure 3 Enlarged view of point A;

[0020] Figure 5 This is an embodiment of the present utility model. Figure 3 Enlarged view of point B.

[0021] The following detailed explanation illustrates the specific implementation methods:

[0022] The reference numerals in the accompanying drawings of the instruction manual include: water tank 1, support block 2, hydraulic cylinder 3, top plate 4, sliding column 5, adjusting seat 6, motor one 7, double-acting screw 8, self-lubricating mechanism 9, adjusting block 10, connecting sleeve 11, convex rotating block 12, hook 13, limiting plate 14, spring one 15, inclined seat 16, motor two 17, rotating shaft 18, L-shaped rod 19, hollow plate 91, oil storage sponge 92, sliding pin 93, pressure plate 94, sliding rod 95, baffle 96, spring two 97, protrusion 98, through hole 99, oil outlet hole 910. Detailed Implementation

[0023] The basic implementation examples are as follows: Figures 1-4 As shown: An integrated fixture device for testing the air tightness of an automotive radiator includes a water tank 1. Support blocks 2 are fixedly connected to both the left and right sides of the water tank 1. A hydraulic cylinder 3 is fixedly installed on the upper end of the support block 2. A top plate 4 is fixedly connected to the end of the telescopic shaft of the hydraulic cylinder 3. Two sliding columns 5 are slidably connected inside the top plate 4, and the sliding columns 5 are set through the top plate 4. A limit plate 14 is fixedly connected to the upper end of the sliding column 5. A spring 15 is sleeved on the upper section of the column body of the sliding column 5. One end of the spring 15 is fixedly connected to the limit plate 14, and the other end of the spring 15 is fixedly connected to the upper end of the top plate 4. The spring 15 allows the reaction force to be applied to the adjusting seat 6 via the limiting plate 14. The lower end of the sliding column 5 is fixedly connected to the adjusting seat 6. A motor 7 is fixedly installed on the right side of the adjusting seat 6. The output shaft of the motor 7 passes through the adjusting seat 6 and is connected to the adjusting seat 6 via a bearing. A double-acting screw 8 is fixedly connected to the end of the output shaft of the motor 7. Two adjusting blocks 10 are threadedly connected to the outer side of the double-acting screw 8, and the adjusting blocks 10 are slidably connected to the inside of the adjusting seat 6. A connecting sleeve 11 is fixedly connected to the bottom of the adjusting block 10. A convex rotating block 12 is rotatably connected inside the connecting sleeve 11. A hook 13 is fixedly connected to the bottom of the convex rotating block 12. The hook 13 can rotate through the convex rotating block 12, which increases its flexibility and allows the hook 13 to be better hung on the mounting hole of the car radiator.

[0024] like Figure 1 , Figure 2 , Figure 3As shown, a ramp seat 16 is fixedly connected to the upper middle part of the adjusting seat 6, and a second motor 17 is fixedly installed at the lower middle part of the top plate 4. A rotating shaft 18 is fixedly connected to the end of the output shaft of the second motor 17, and an L-shaped rod 19 is fixedly connected to the shaft of the rotating shaft 18. The arc end of the L-shaped rod 19 abuts against the inclined surface of the ramp seat 16. The rotating shaft 18 is driven to rotate by the second motor 17, and the rotating shaft 18 drives the L-shaped rod 19 to rotate on the inclined surface of the ramp seat 16, thereby periodically subjecting the adjusting seat 6 and the components on the adjusting seat 6 to a downward thrust. This causes the suspended car radiator to periodically rise and fall within the water tank 1, simulating airtightness testing under vibration conditions and providing accurate test results.

[0025] like Figure 3 , Figure 5 As shown, the adjusting block 10 is equipped with a self-lubricating mechanism 9. This mechanism provides automatic lubrication after the adjusting block 10 is reset, reducing the impact of moisture corrosion on the threaded connection between the bidirectional screw 8 and the adjusting block 10. The self-lubricating mechanism 9 includes a hollow plate 91 fixedly connected inside the adjusting block 10. A through hole 99 is formed inside the hollow plate 91, penetrating the entire plate. An oil-retaining sponge 92 contacts the upper center of the hollow plate 91, with the position of the sponge corresponding to the position of the through hole 99. A sliding pin 93 is slidably connected to the top of the adjusting block 10, and the sliding pin 93 is set through the adjusting block 10. One end of the sliding pin 93 abuts against the inner top of the adjusting seat 6, and the other end of the sliding pin 93 is fixedly connected to a pressure plate 94. The pressure plate 94 abuts against the top of the oil storage sponge 92. A second spring 97 is sleeved on the outside of the pin body of the sliding pin 93. One end of the second spring 97 is fixedly connected to the pressure plate 94, and the other end of the second spring 97 is fixedly connected to the inner surface of the adjusting block 10. A protrusion 98 is fixedly connected to the inner top of the adjusting seat 6, and the position of the protrusion 98 corresponds to the end position of the sliding pin 93. Two sliding rods 95 are fixedly connected to the lower edge of the pressure plate 94. The sliding rods 95 pass through the hollow plate 91 and are slidably connected to the hollow plate 91. A baffle 96 is fixedly connected to the end of the sliding rod 95. The baffle 96 contacts the bottom of the hollow plate 91, and the position of the baffle 96 corresponds to the position of the through hole 99. The baffle 96 can block the through hole 99 of the hollow plate 91, and the baffle 96 can move down with the pressure plate 94. The adjusting block 10 has an oil outlet hole 910 inside, and the position of the oil outlet hole 910 corresponds to the position of the bidirectional screw 8. The oil outlet hole 910 allows lubricating oil to be accurately added to the threaded connection between the bidirectional screw 8 and the adjusting block 10.

[0026] The specific implementation process of this utility model is as follows: In use, firstly, the car radiator to be tested is connected to the air charging pipe and placed at the two hooks 13. Then, the motor 1 7 drives the bidirectional screw 8 to rotate, thereby causing the two adjusting blocks 10 to move towards or away from each other until the hooks 13 are adapted to the mounting holes of the car radiator. Then, it is hung up. Subsequently, the hydraulic cylinder 3 pulls down the top plate 4, thereby allowing the car radiator to enter the water tank 1 for air tightness testing. Moreover, during the test, the L-shaped motor 17 drives the... The periodic contact between rod 19 and inclined seat 16 causes the radiator to repeatedly rise and fall within water tank 1, simulating a real driving vibration environment and improving the accuracy of air tightness testing. In particular, it can expose hidden dangers that are difficult to detect by static testing, such as micro-cracks in welds. In addition, when the adjusting block 10 is reset, the collision between sliding pin 93 and protrusion 98 triggers pressure plate 94 to press down oil storage sponge 92 and release a small amount of lubricating oil. The lubricating oil precisely lubricates the threads of bidirectional screw 8 through through hole 99 and oil outlet hole 910, reducing the risk of corrosion and enabling the fixture to be used continuously.

[0027] This solution uses an electric motor 17 to drive an L-shaped rod 19 to periodically contact the inclined seat 16, causing the radiator to repeatedly rise and fall within the water tank 1, simulating a real driving vibration environment. This improves the accuracy of airtightness testing, especially exposing hidden dangers that are difficult to detect by static inspection, such as micro-cracks in welds. By setting a self-lubricating mechanism 9 between the bidirectional screw 8 used to hold the car radiator and the adjusting block 10, the self-lubricating mechanism 9 utilizes the collision between the sliding pin 93 and the protrusion 98 when the adjusting block 10 is reset to trigger the pressure plate 94 to press down the oil storage sponge 92 and release a small amount of lubricating oil. The lubricating oil precisely lubricates the threads of the bidirectional screw 8 through the through hole 99 and the oil outlet hole 910, reducing the risk of corrosion and allowing the fixture to be used continuously.

[0028] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications 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 shall 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. An integrated fixture device for testing the air tightness of automotive radiators, including a water tank, characterized in that: Support blocks are fixedly connected to both sides of the water tank. A hydraulic cylinder is fixedly installed on the upper end of the support block. A top plate is fixedly connected to the end of the telescopic shaft of the hydraulic cylinder. Two sliding columns are slidably connected inside the top plate, and the sliding columns penetrate the top plate. A limit plate is fixedly connected to the upper end of the sliding column. A spring is sleeved on the upper section of the column body. An adjusting seat is fixedly connected to the lower end of the sliding column. A motor is fixedly installed on the right side of the adjusting seat. The output shaft of the motor passes through the adjusting seat and is connected to the adjusting seat through a bearing. A double-acting screw is fixedly connected to the end of the output shaft of the motor. Two adjusting blocks are threadedly connected to the outside of the double-acting screw, and the adjusting blocks are slidably connected inside the adjusting seat. A self-lubricating mechanism is provided inside the adjusting blocks.

2. The integrated fixture device for testing the air tightness of automotive radiators according to claim 1, characterized in that: The bottom of the adjusting block is fixedly connected to a connecting sleeve, and a convex rotating block is rotatably connected inside the connecting sleeve. The bottom of the convex rotating block is fixedly connected to a hook.

3. The integrated fixture device for testing the air tightness of automotive radiators according to claim 1, characterized in that: One end of the spring is fixedly connected to the limiting plate, and the other end of the spring is fixedly connected to the upper end of the top plate.

4. The integrated fixture device for testing the air tightness of automotive radiators according to claim 1, characterized in that: An inclined seat is fixedly connected to the upper middle part of the adjusting seat, and a second motor is fixedly installed at the lower middle part of the top plate. A rotating shaft is fixedly connected to the end of the output shaft of the second motor, and an L-shaped rod is fixedly connected to the shaft body of the rotating shaft. The arc end of the L-shaped rod abuts against the inclined surface of the inclined seat.

5. The integrated fixture device for testing the air tightness of automotive radiators according to claim 1, characterized in that: The self-lubricating mechanism includes a hollow plate fixedly connected inside the adjusting block. A through hole is formed inside the hollow plate, penetrating the entire plate. An oil-retaining sponge contacts the upper center of the hollow plate, with the position of the sponge corresponding to the position of the through hole. A sliding pin is slidably connected to the top of the adjusting block, penetrating the entire block. One end of the sliding pin abuts against the inner top of the adjusting seat, and the other end is fixedly connected to a pressure plate, which abuts against the top of the oil-retaining sponge. A second spring is sleeved on the outer side of the sliding pin, with one end fixedly connected to the pressure plate and the other end fixedly connected to the inner surface of the adjusting block. A protrusion is fixedly connected to the inner top of the adjusting seat, with the position of the protrusion corresponding to the end position of the sliding pin.

6. The integrated fixture device for testing the air tightness of automotive radiators according to claim 5, characterized in that: Two sliding rods are fixedly connected to the lower edge of the pressure plate. The sliding rods pass through the hollow plate and are slidably connected to the hollow plate. A baffle is fixedly connected to the end of the sliding rod. The baffle contacts the bottom of the hollow plate, and the position of the baffle corresponds to the position of the through hole.

7. The integrated fixture device for testing the air tightness of automotive radiators according to claim 5, characterized in that: The adjusting block has an oil outlet hole inside, and the position of the oil outlet hole corresponds to the position of the bidirectional screw.

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