Double-station overturning type automobile oil pipe airtightness inspection equipment

Abstract

The invention relates to the technical field of automobile oil pipe detection, in particular to double-station overturning type automobile oil pipe airtightness detection equipment which comprises a workbench and a portal frame fixedly mounted at the top of the workbench and further comprises a fixing unit, and the fixing unit comprises overturning plates rotationally mounted at the top of the workbench and symmetrically distributed front and back. Z-shaped placing grooves are formed in the upper side and the lower side of the overturning plate correspondingly, a fixed plugging assembly is installed at the left end of each placing groove, the right end of each placing groove penetrates through the right side of the overturning plate, and a pushing plate used for pushing an oil pipe to move leftwards and a first moving assembly are slidably installed on the overturning plate. According to the device, an oil pipe only needs to be manually placed in a placing groove, then a driving motor drives an overturning plate to rotate, a first pushing ring and a second pushing ring are used for pushing a second push rod and a first push rod to move reversely close to the center of the overturning plate, then the oil pipe can be fixed through a pushing plate and a limiting block, and the end of the oil pipe is sealed through a fixed plugging assembly; and the oil pipe airtightness detection efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of automotive oil pipe testing technology, specifically a dual-station flip-type automotive oil pipe airtightness testing device. Background Technology

[0002] Automotive fuel lines are pipes used to transport fluids in a vehicle's fuel system, braking system, and steering system. They primarily deliver fuel from the fuel tank to the engine and are typically made of pressure-resistant and corrosion-resistant rubber, polyurethane, or plastic materials. They play a crucial role in the normal operation and safety of the vehicle. Testing the airtightness of automotive fuel lines is a critical step in ensuring fuel system safety and preventing fuel leaks. The core objective is to verify whether the fuel lines exhibit defects such as leakage or rupture under rated pressure. The test must cover the fuel line body, joints, welded / crimped areas, and other potential leak points.

[0003] The pressure decay method is a common method for testing automotive oil pipes. By sealing the oil pipe and pressurizing it, a pressure sensor is used to monitor the pressure change during the pressure holding period, and the pressure decay value over time is recorded. The value is then compared with the standard threshold to determine whether it is qualified. If the pressure drop exceeds the standard, it indicates that the airtightness of the automotive oil pipe is unqualified. Figure 11 The image shows a common automotive fuel line. When testing fuel lines, workers need to install sealing caps at both ends to ensure there are no leaks at the connections. The sealing caps are connected to the air source and pressure sensor of an airtightness tester. The tester pressurizes the fuel line and monitors pressure changes during the pressure holding period. After testing, the sealing caps are removed for subsequent fuel line testing. The current installation and testing method requires workers to install the sealing caps at the ends of the fuel line and wait until the previous fuel line is inspected before proceeding to the next, resulting in low inspection efficiency. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a dual-station tilting automotive oil pipe air tightness testing device, comprising a workbench and a gantry frame fixedly installed on the top of the workbench, and a fixing unit. The fixing unit includes a tilting plate rotatably installed on the top of the workbench and symmetrically distributed front and back. Z-shaped placement slots are provided on both the upper and lower sides of the tilting plate. A fixed sealing component is installed at the left end of the placement slot, and the right end extends to the right side of the tilting plate. A pushing plate for pushing the oil pipe to the left and a first moving component are slidably installed on the tilting plate. Limiting blocks for limiting the oil pipe are slidably installed on the side of each horizontal section of the placement slot near the central axis of the tilting plate. Second moving components for pushing the corresponding limiting blocks away from the central axis of the tilting plate are installed on the left and right sides of the tilting plate. Pushing components corresponding to the tilting plate are installed on the inner wall of the workbench.

[0005] The inspection unit includes a dynamic sealing assembly that is slidably installed on the inner wall of the right side of the workbench and aligned with the right end of the placement slot below. An electric telescopic rod is fixedly installed on the right side of the workbench to drive the dynamic sealing assembly to move left and right to seal the right end of the oil pipe.

[0006] In one possible implementation, the fixed sealing assembly includes a housing fixedly mounted on a flip plate. A sealing ring for sealing the outer side of the tubing end is fixedly mounted on the inner annular wall of the housing. A sealing plug for sealing the inner side of the tubing end is slidably mounted inside the housing. A collet is mounted inside the sealing plug. A compression spring is fixedly connected between the left side of the collet and the inner wall of the housing. A plug for pushing the collet outward is fixedly mounted on the left inner wall of the housing. The right end of the plug extends into the interior of the collet and its diameter gradually decreases. The dynamic sealing assembly has the same structure as the fixed sealing assembly but in the opposite left-right direction.

[0007] In one possible implementation, the push plate is located on the right side of the bent section of the placement groove, and the moving component includes a push rod fixedly connected to the right side of the push plate. The right end of the push rod slides through to the right side of the flip plate. A side plate is fixedly connected to the front side of the push rod, and a return spring is fixedly connected between the left side of the side plate and the inner wall of the flip plate.

[0008] In one possible implementation, the limiting block is wedge-shaped, and a second side plate is fixedly connected to the bottom of the limiting block. The second side plate is slidably installed inside the flip plate, and a second return spring is fixedly connected between the side of the second side plate away from the central axis of the flip plate and the inner wall of the flip plate.

[0009] In one possible implementation, the second movable component includes a push rod 2 that is slidably mounted on the flip plate and located on the side of the limiting block away from the center of the flip plate. The end of the push rod 2 away from the center of the flip plate slides through to the outside of the flip plate, and the end near the center of the flip plate slides in cooperation with the inclined surface of the limiting block. A side plate 3 is fixedly connected to the bottom of the push rod 2, and a return spring 3 is fixedly connected between the end of the side plate 3 near the center of the flip plate and the inner wall of the flip plate.

[0010] In one possible implementation, the pushing assembly includes baffles fixedly installed on the left and right inner walls of the worktable. A pushing ring 1 is fixedly connected to the side of the baffle near the center of the flip plate. The pushing ring 1 is C-shaped and has a sloping surface at one end. The pushing ring 1 is slidably engaged with the end of the pushing rod 2. A pushing ring 2 is also fixedly connected to the side of the right baffle near the center of the flip plate. The pushing ring 2 is located inside the pushing ring 1 and is slidably engaged with the end of the pushing rod 1.

[0011] In one possible implementation, a rotating shaft coaxial with the left and right ends of the flip plate is fixedly installed. The rotating shaft is rotatably connected to the baffle. The end of the rotating shaft away from the center of the flip plate rotates through to the outside of the worktable. A drive motor for driving the flip plate to rotate at a fixed angle is fixedly installed on the left side of the worktable. The output shaft of the drive motor is connected to the rotating shaft on the rear side through a gear mechanism and to the rotating shaft on the front side through a pulley mechanism.

[0012] In one possible implementation, a connecting frame is fixedly connected to the right end of the telescopic shaft of the electric telescopic rod. Connecting rods symmetrically distributed front and back are fixedly installed on the connecting frame. The left end of the connecting rod slides through the inner side of the workbench and is fixedly connected to the outer shell of the dynamic sealing assembly. A symmetrically distributed air tightness tester is fixedly installed on the top of the gantry frame. An air tightness tester is fixedly installed on the right side of the air tightness tester. The bottom end of the air supply pipe passes through the corresponding connecting rod and then sequentially passes through the outer shell, plug, clamp, and sealing plug of the dynamic sealing assembly. The bottom end of the air supply pipe is fixedly connected to and communicates with the sealing plug in the dynamic sealing assembly.

[0013] In one possible implementation, an alignment component is also installed on the housing of the dynamic sealing assembly. The alignment component includes a connecting plate fixedly installed on the top of the housing of the dynamic sealing assembly. An alignment rod is fixedly connected to the left side of the connecting plate, and an alignment hole is provided on the right side of the flip plate to engage with the alignment rod. The opening of the alignment hole is flared.

[0014] The beneficial effects of this invention are as follows: 1. This invention only requires manual placement of the oil pipe into the placement slot. Then, the drive motor drives the tilting plate to rotate. The push ring one and push ring two push the push rod two and push rod one to move in the opposite direction closer to the center of the tilting plate. This allows the push plate and the limiting block to fix the oil pipe, and the sealing assembly to seal the end of the oil pipe, thus improving the efficiency of oil pipe air tightness inspection. 2. By setting placement slots on both the upper and lower sides of the tilting plate, when one placement slot with the oil pipe is tilted down for air tightness inspection, the other placement slot can be tilted up for oil pipe loading and unloading. This eliminates the need to wait for the previous oil pipe to be inspected before proceeding to the next, further improving the inspection efficiency of the oil pipe. 3. Simultaneously, by setting two tilting plates, two workstations can be provided for simultaneous oil pipe inspection, further improving the efficiency of oil pipe air tightness inspection.

[0015] 2. In this invention, after the end of the oil pipe is inserted into the outer casing, the sealing ring is fitted onto the outside of the oil pipe, which can seal the left end of the oil pipe from the outside. At the same time, the sealing plug is inserted into the inside of the oil pipe. The oil pipe pushes the sealing plug and the collet to move to the left. At this time, the compression spring is compressed and contracts, so that the plunger is inserted into the collet. As the diameter of the plunger gradually increases, the plunger pushes the collet and the sealing plug to expand outward, so that the sealing plug seals the oil pipe from the inside. Through the cooperation of the sealing ring and the sealing plug, the left end of the oil pipe is doubly sealed, improving the sealing effect of the oil pipe. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the first angle of the present invention.

[0017] Figure 2 This is a three-dimensional structural schematic diagram of the second angle of the present invention.

[0018] Figure 3 This is a three-dimensional structural diagram of the fixing unit of the present invention.

[0019] Figure 4 This is a partial cross-sectional view of the flip plate of the present invention.

[0020] Figure 5 This is a three-dimensional structural diagram of the second movable component of the present invention.

[0021] Figure 6 This is a three-dimensional structural diagram of the workbench of the present invention.

[0022] Figure 7 This is a three-dimensional structural diagram of the pushing component of the present invention.

[0023] Figure 8 This is a partial cross-sectional view of the sealing component of the present invention.

[0024] Figure 9 This is a three-dimensional structural diagram of the collet of the present invention.

[0025] Figure 10 This is a partial cross-sectional view of the dynamic sealing assembly of the present invention.

[0026] Figure 11 This is a three-dimensional structural diagram of an existing oil pipeline.

[0027] In the diagram: 1. Workbench; 11. Gantry frame; 2. Fixed unit; 21. Tilting plate; 211. Rotating shaft; 22. Placement slot; 23. Fixed sealing assembly; 231. Housing; 232. Sealing ring; 233. Sealing plug; 234. Collet; 235. Compression spring; 236. Plug; 24. Push plate; 25. Moving assembly one; 251. Push rod one; 252. Side plate one; 253. Return spring one; 26. Limit block; 261. Side plate two; 262. Return spring two; 27. Moving component two; 271. Push rod two; 272. Side plate three; 273. Return spring three; 28. Pushing component; 281. Baffle; 282. Pushing ring one; 283. Pushing ring two; 29. ​​Drive motor; 3. Inspection unit; 31. Dynamic sealing component; 32. Electric telescopic rod; 33. Connecting frame; 331. Connecting rod; 34. Air tightness tester; 35. Gas pipe; 36. Alignment component; 361. Connecting plate; 362. Alignment rod; 363. Alignment hole. Detailed Implementation

[0028] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Please see Figure 1 - Figure 10 A dual-station flip-type automotive oil pipe air tightness inspection device includes a workbench 1 and a gantry frame 11 fixedly installed on the top of the workbench 1. It also includes a fixing unit 2, which includes a flip plate 21 rotatably installed on the top of the workbench 1 and symmetrically distributed front and back. The flip plate 21 has Z-shaped placement grooves 22 on both the upper and lower sides. A fixed sealing component 23 is installed at the left end of the placement groove 22 and extends to the right side of the flip plate 21 at the right end. A push plate 24 for pushing the oil pipe to the left and a moving component 25 are slidably installed on the flip plate 21. A limiting block 26 for limiting the oil pipe is slidably installed on one side of each horizontal section of the placement groove 22 near the central axis of the flip plate 21. Moving components 27 for pushing the corresponding limiting blocks 26 to move away from the central axis of the flip plate 21 are installed on the left and right sides of the flip plate 21. Push components 28 corresponding to the flip plate 21 are installed on the inner wall of the workbench 1.

[0030] Inspection unit 3 includes a dynamic sealing assembly 31 that is slidably installed on the inner wall of the right side of the workbench 1 and aligned with the right end of the placement slot 22 below. An electric telescopic rod 32 is fixedly installed on the right side of the workbench 1 to move the dynamic sealing assembly 31 left and right to seal the right end of the oil pipe.

[0031] In practical use, the oil pipe is placed in the placement groove 22, and then the flipping plate 21 is flipped 180°. During the flipping process, the pushing component 28 drives the moving component 25, causing the moving component 25 to push the pushing plate 24 to the left. The pushing plate 24 pushes the oil pipe to the left, so that the left end of the oil pipe is inserted into the fixed sealing component 23. The fixed sealing component 23 seals the left end of the oil pipe. At the same time, the pushing component 28 drives the moving component 27, causing the moving component 27 to push the limiting block 26 to move away from the central axis of the flipping plate 21. The limiting block 26 clamps the oil pipe, preventing the oil pipe from falling out of the placement groove 22 when the placement groove 22 is flipped to the bottom.

[0032] After the flipping plate 21 flips the oil pipe to the bottom, the right end of the oil pipe is aligned with the moving sealing assembly 31. The moving sealing assembly 31 is then moved to the left by the electric telescopic rod 32, so that the moving sealing assembly 31 seals the right end of the oil pipe. After that, the oil pipe is tested for air tightness. This invention only requires manual placement of the oil pipe into the placement slot 22, which can automatically complete the fixing, sealing and air tightness testing of the oil pipe, thus improving the efficiency of oil pipe air tightness testing. By setting placement slots 22 on both the upper and lower sides of the flipping plate 21, when one placement slot 22 with the oil pipe is flipped to the bottom for air tightness testing, the other placement slot 22 can be flipped to the top for oil pipe loading and unloading. It is not necessary to wait for the previous oil pipe to be tested before the next oil pipe is tested, which further improves the efficiency of oil pipe testing. At the same time, by setting two flipping plates 21, two workstations can be provided to test the oil pipe at the same time, which further improves the efficiency of oil pipe air tightness testing.

[0033] Please see Figure 3 , Figure 4 , Figure 8 and Figure 9The fixed sealing assembly 23 includes a housing 231 fixedly mounted on the flip plate 21. A sealing ring 232 for sealing the outside of the oil pipe end is fixedly mounted on the inner ring wall of the housing 231. A sealing plug 233 for sealing the inside of the oil pipe end is slidably mounted inside the housing 231. A collet 234 is mounted inside the collet 233. A compression spring 235 is fixedly connected between the left side of the collet 234 and the inner wall of the housing 231. A plug 236 for pushing the collet 234 outward is fixedly mounted on the left inner wall of the housing 231. The right end of the plug 236 extends into the inside of the collet 234 and its diameter gradually decreases. The dynamic sealing assembly 31 has the same structure as the fixed sealing assembly 23 but the left and right directions are opposite.

[0034] In practical use, when the oil pipe moves to the left, the left end of the oil pipe is inserted into the outer casing 231. At this time, the sealing ring 232 is fitted onto the outside of the oil pipe, which can seal the left end of the oil pipe from the outside. At the same time, the sealing plug 233 is inserted into the inside of the oil pipe. The oil pipe pushes the sealing plug 233 and the collet 234 to move to the left. At this time, the compression spring 235 is compressed and contracts, so that the plunger 236 is inserted into the collet 234. As the diameter of the plunger 236 gradually increases, the plunger 236 pushes the collet 234 and the sealing plug 233 to expand outward, so that the sealing plug 233 seals the oil pipe from the inside. Through the cooperation of the sealing ring 232 and the sealing plug 233, a double seal is achieved on the left end of the oil pipe, which improves the sealing effect of the oil pipe and avoids leakage of the oil pipe during airtightness testing.

[0035] After the oil pipe is removed from the housing 231, the spring force of the compression spring 235 pushes the collet 234 to move to the right, so that the collet 234 moves from the large diameter end of the plug 236 to the small diameter end. At this time, the collet 234 can drive the sealing plug 233 to retract and reset inward, which facilitates the sealing of the subsequent oil pipe.

[0036] Please see Figure 3 and Figure 4 The push plate 24 is located on the right side of the bent section of the placement groove 22. The moving component 25 includes a push rod 251 fixedly connected to the right side of the push plate 24. The right end of the push rod 251 slides through to the right side of the flip plate 21. A side plate 252 is fixedly connected to the front side of the push rod 251. A return spring 253 is fixedly connected between the left side of the side plate 252 and the inner wall of the flip plate 21.

[0037] Please see Figure 4 and Figure 5 The limiting block 26 is wedge-shaped, and a side plate 261 is fixedly connected to the bottom of the limiting block 26. The side plate 261 is slidably installed inside the flip plate 21. A reset spring 262 is fixedly connected between the side of the side plate 261 away from the central axis of the flip plate 21 and the inner wall of the flip plate 21.

[0038] Please see Figure 4 and Figure 5 The second moving component 27 includes a push rod 271 that is slidably mounted on the flip plate 21 and located on the side of the limiting block 26 away from the center of the flip plate 21. The end of the push rod 271 away from the center of the flip plate 21 slides through to the outside of the flip plate 21, and the end near the center of the flip plate 21 slides in cooperation with the inclined surface of the limiting block 26. The bottom of the push rod 271 is fixedly connected to a side plate 272. The end of the side plate 272 near the center of the flip plate 21 is fixedly connected to the inner wall of the flip plate 21 with a return spring 273.

[0039] Please see Figure 4 , Figure 6 and Figure 7 The pushing assembly 28 includes baffles 281 fixedly installed on the left and right inner walls of the workbench 1. A pushing ring 282 is fixedly connected to the side of the baffle 281 near the center of the flip plate 21. The pushing ring 282 is C-shaped and has a sloping surface at one end. The pushing ring 282 is slidably engaged with the end of the push rod 271. A pushing ring 283 is also fixedly connected to the side of the right baffle 281 near the center of the flip plate 21. The pushing ring 283 is located inside the pushing ring 282 and is slidably engaged with the end of the push rod 251.

[0040] In practical use, when the placement slot 22 is located at the top of the flip plate 21, the right end of the push rod 251 is located at the notch of the push ring 283. At this time, the push rod 251 will not be pushed by the push ring 283. The return force of the return spring 253 pushes the side plate 252 and the push rod 251 to the right, so that the push rod 251 drives the push plate 24 to the right to the right side of the placement slot 22, so as to avoid affecting the placement of the oil pipe into the placement slot 22. After the oil pipe is placed into the placement slot 22, as the flip plate 21 rotates, the right end of the push rod 251 will slide along the inclined surface of the push ring 283 and move to the left under the push of the push ring 283. The push rod 251 pushes the push plate 24 to the left, so that the push plate 24 pushes the oil pipe in the placement slot 22 to the left, thereby inserting the left end of the oil pipe into the outer shell 231, which facilitates the sealing of the left end of the oil pipe.

[0041] When the placement slot 22 is at the top of the flip plate 21, the end of the push rod 271 away from the center of the flip plate 21 is located at the notch of the push ring 282. At this time, the return force of the return spring 273 pushes the side plate 272 and the push rod 271 to move away from the center of the flip plate 21, so that the push rod 271 moves away from the corresponding limiting block 26. At the same time, the return spring 262 pushes the side plate 261 and the limiting block 26 to move closer to the central axis of the flip plate 21, so that the limiting block 26 moves away from the placement slot 22, avoiding interference. The oil pipe is placed in the placement groove 22. After the oil pipe is placed in the placement groove 22, as the flip plate 21 rotates, the end of the push rod 271 away from the center of the flip plate 21 will slide along the inclined surface of the push ring 282 and move towards the center of the flip plate 21 under the push of the push ring 282. The push rod 271 pushes the inclined surface of the limiting block 26, causing the limiting block 26 to move away from the central axis of the flip plate 21. The limiting block 26 clamps the oil pipe in the placement groove 22 to prevent the oil pipe from becoming loose during inspection.

[0042] When the placement slot 22 flips back to the top of the flip plate 21, the right end of push rod 251 rotates back to the notch of push ring 283. At this time, the return force of return spring 253 pushes side plate 252 and push rod 251 to the right, so that push rod 251 drives push plate 24 to move back to the right side of placement slot 22, so that push plate 24 no longer pushes the oil pipe. At the same time, the end of push rod 271 away from the center of flip plate 21 rotates back to the notch of push ring 282. At this time, the return force of return spring 273 pushes push rod 271 to move away from the center of flip plate 21. At the same time, return spring 262 pushes side plate 261 and limit block 26 to move closer to the central axis of flip plate 21, so that limit block 26 no longer clamps the oil pipe, making it convenient and quick to remove the oil pipe from placement slot 22.

[0043] Please see Figure 2 , Figure 3 , Figure 6 and Figure 7 Both ends of the flip plate 21 are fixedly installed with rotating shafts 211 coaxial with it. The rotating shafts 211 are coaxially rotatably connected to the baffle 281. The end of the rotating shaft 211 away from the center of the flip plate 21 rotates through to the outside of the worktable 1. A drive motor 29 for driving the flip plate 21 to rotate at a certain angle is fixedly installed on the left side of the worktable 1. The output shaft of the drive motor 29 is connected to the rotating shaft 211 on the rear side through a gear mechanism and to the rotating shaft 211 on the front side through a pulley mechanism.

[0044] In practical use, the drive motor 29 drives the front rotating shaft 211 to rotate through the belt pulley mechanism and drives the rear rotating shaft 211 to rotate in the opposite direction through the gear set mechanism. The rotating shaft 211 drives the corresponding flipping plate 21 to flip at a certain angle. The flipping plate 21 flips 180° each time, so that the placement slots 22 on the upper and lower sides of the flipping plate 21 flip upward alternately, which facilitates the alternating placement of oil pipes into the placement slots 22.

[0045] Please see Figure 1 , Figure 6 and Figure 10 A connecting frame 33 is fixedly connected to the right end of the telescopic shaft of the electric telescopic rod 32. Connecting rods 331, symmetrically distributed front and rear, are fixedly installed on the connecting frame 33. The left end of the connecting rod 331 slides through the inner side of the workbench 1 and is fixedly connected to the outer shell 231 in the dynamic sealing assembly 31. A symmetrically distributed air tightness detector 34 is fixedly installed on the top of the gantry frame 11. An air supply pipe 35 is fixedly installed on the right side of the air tightness detector 34. The bottom end of the air supply pipe 35 passes through the corresponding connecting rod 331 and then sequentially passes through the outer shell 231, plug 236, clamp 234, and sealing plug 233 in the dynamic sealing assembly 31. The bottom end of the air supply pipe 35 is fixedly connected to and communicates with the sealing plug 233 in the dynamic sealing assembly 31. It should be noted that the air tightness detector 34 is prior art. The air tightness detector 34 includes an air source and a pressure sensor. The air tightness detector 34 is used to purge air from the oil pipe and to detect the air pressure in the oil pipe.

[0046] In practical use, after the placement slot 22 moves the oil pipe to the underside of the flip plate 21, the electric telescopic rod 32 drives the connecting frame 33 to move to the left. The connecting frame 33 pushes the dynamic sealing assembly 31 to move to the left through the connecting rod 331. The dynamic sealing assembly 31 seals the right end of the oil pipe. After the seal is completed, the air tightness tester 34 delivers sufficient air into the oil pipe through the air supply pipe 35. Then, the air supply to the oil pipe is stopped. The air tightness tester 34 measures the air pressure in the oil pipe, records the pressure decay value over time, and compares it with the standard threshold to determine whether it is qualified.

[0047] Please see Figure 3 , Figure 6 and Figure 10 The housing 231 of the dynamic sealing assembly 31 is also equipped with an alignment assembly 36. The alignment assembly 36 includes a connecting plate 361 fixedly installed on the top of the housing 231 of the dynamic sealing assembly 31. An alignment rod 362 is fixedly connected to the left side of the connecting plate 361. An alignment hole 363 is opened on the right side of the flip plate 21 to engage with the alignment rod 362. The opening of the alignment hole 363 is flared.

[0048] In practical use, when the dynamic sealing assembly 31 moves to the left to seal the right end of the oil pipe, the outer shell 231 in the dynamic sealing assembly 31 drives the connecting plate 361 and the alignment rod 362 to move to the left. The alignment rod 362 is inserted into the alignment hole 363. The alignment rod 362 is used to position the flip plate 21 to prevent the flip plate 21 from deflecting during the inspection process, which helps to improve the stability of the flip plate 21.

[0049] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, or a sliding connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0050] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A dual-station flip-type automotive oil pipe air tightness testing device, comprising a workbench (1) and a gantry (11) fixedly installed on the top of the workbench (1), characterized in that, Also includes: The fixing unit (2) includes a rotating plate (21) rotatably mounted on the top of the workbench (1) and symmetrically distributed in front and back. The upper and lower sides of the rotating plate (21) are provided with Z-shaped placement grooves (22). The left end of the placement groove (22) is equipped with a fixed sealing component (23), and the right end extends through to the right side of the rotating plate (21). The rotating plate (21) is slidably mounted with a push plate (24) for pushing the oil pipe to the left and a first moving component (25). The two horizontal sections of the placement groove (22) are slidably mounted with a limiting block (26) for limiting the oil pipe on the side close to the central axis of the rotating plate (21). The left and right sides of the rotating plate (21) are equipped with a second moving component (27) for pushing the corresponding limiting block (26) to move away from the central axis of the rotating plate (21). The inner wall of the workbench (1) is equipped with a push component (28) corresponding to the rotating plate (21). Inspection unit (3), the inspection unit (3) includes a dynamic sealing assembly (31) which is slidably installed on the inner wall of the right side of the workbench (1) and aligned with the right end of the placement slot (22) below. An electric telescopic rod (32) is fixedly installed on the right side of the workbench (1) to drive the dynamic sealing assembly (31) to move left and right to seal the right end of the oil pipe. The fixed sealing assembly (23) includes a housing (231) fixedly installed on the flip plate (21), a sealing ring (232) for sealing the outside of the oil pipe end is fixedly installed on the inner ring wall of the housing (231), and a sealing plug (233) for sealing the inside of the oil pipe end is slidably installed inside the housing (231). The push plate (24) is located on the right side of the bent section of the placement groove (22), and the moving component (25) includes a push rod (251) fixedly connected to the right side of the push plate (24). The pushing assembly (28) includes a baffle (281) fixedly installed on the left and right inner walls of the workbench (1). A pushing ring (282) is fixedly connected to the side of the baffle (281) near the center of the flip plate (21), and a pushing ring (283) is also fixedly connected to the side of the baffle (281) near the center of the flip plate (21).

2. The dual-station flip-type automotive oil pipe air tightness testing equipment according to claim 1, characterized in that: A collet (234) is installed on the inner side of the sealing plug (233). A compression spring (235) is fixedly connected between the left side of the collet (234) and the inner wall of the outer shell (231). A plug (236) for pushing the collet (234) outward is fixedly installed on the inner wall of the left side of the outer shell (231). The right end of the plug (236) extends into the interior of the collet (234) and its diameter gradually decreases. The dynamic sealing assembly (31) has the same structure as the fixed sealing assembly (23) but the left and right directions are opposite.

3. The dual-station flip-type automotive oil pipe air tightness testing equipment according to claim 1, characterized in that: The right end of the push rod (251) slides through to the right side of the flip plate (21). The front side of the push rod (251) is fixedly connected to the side plate (252). The left side of the side plate (252) is fixedly connected to the inner wall of the flip plate (21) and the return spring (253).

4. The dual-station flip-type automotive oil pipe air tightness testing equipment according to claim 3, characterized in that: The limiting block (26) is wedge-shaped, and a side plate (261) is fixedly connected to the bottom of the limiting block (26). The side plate (261) is slidably installed inside the flip plate (21). A reset spring (262) is fixedly connected between the side of the side plate (261) away from the central axis of the flip plate (21) and the inner wall of the flip plate (21).

5. The dual-station flip-type automotive oil pipe air tightness testing equipment according to claim 4, characterized in that: The second moving component (27) includes a push rod (271) that is slidably mounted on the flip plate (21) and located on the side of the limiting block (26) away from the center of the flip plate (21). The end of the push rod (271) away from the center of the flip plate (21) slides through to the outside of the flip plate (21), and the end near the center of the flip plate (21) slides in cooperation with the inclined surface of the limiting block (26). The bottom of the push rod (271) is fixedly connected to a side plate (272), and a return spring (273) is fixedly connected between the end of the side plate (272) near the center of the flip plate (21) and the inner wall of the flip plate (21).

6. The dual-station flip-type automotive oil pipe air tightness testing equipment according to claim 5, characterized in that: The first push ring (282) is C-shaped and has a sloping surface at one end. The first push ring (282) is slidably engaged with the end of the second push rod (271). The second push ring (283) is located inside the first push ring (282). The second push ring (283) is slidably engaged with the end of the first push rod (251).

7. The dual-station flip-type automotive oil pipe air tightness testing equipment according to claim 1, characterized in that: The left and right ends of the flip plate (21) are fixedly installed with rotating shafts (211) coaxial with it. The rotating shafts (211) are rotatably connected to the baffle (281) on the same axis. The end of the rotating shaft (211) away from the center of the flip plate (21) rotates through to the outside of the workbench (1). The left side of the workbench (1) is fixedly installed with a drive motor (29) for driving the flip plate (21) to rotate at a certain angle. The output shaft of the drive motor (29) is connected to the rotating shaft (211) on the rear side through a gear set mechanism and to the rotating shaft (211) on the front side through a pulley mechanism.

8. The dual-station flip-type automotive oil pipe air tightness testing equipment according to claim 2, characterized in that: The right end of the telescopic shaft of the electric telescopic rod (32) is fixedly connected to a connecting frame (33). The connecting frame (33) is fixedly installed with connecting rods (331) symmetrically distributed in front and back. The left end of the connecting rod (331) slides through to the inside of the workbench (1) and is fixedly connected to the outer shell (231) in the dynamic sealing assembly (31). The top of the gantry (11) is fixedly installed with air tightness detectors (34) symmetrically distributed in front and back. The right side of the air tightness detector (34) is fixedly installed with an air supply pipe (35). The bottom end of the air supply pipe (35) passes through the corresponding connecting rod (331) and then passes through the outer shell (231), plug (236), clamp (234) and sealing plug (233) in the dynamic sealing assembly (31) in sequence. The bottom end of the air supply pipe (35) is fixedly connected to and communicates with the sealing plug (233) in the dynamic sealing assembly (31).

9. A dual-station flip-type automotive oil pipe air tightness testing device according to claim 8, characterized in that: An alignment component (36) is also installed on the outer shell (231) of the dynamic sealing assembly (31). The alignment component (36) includes a connecting plate (361) fixedly installed on the top of the outer shell (231) of the dynamic sealing assembly (31). An alignment rod (362) is fixedly connected to the left side of the connecting plate (361). An alignment hole (363) is opened on the right side of the flip plate (21) to engage with the alignment rod (362). The opening of the alignment hole (363) is flared.

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