Air intake elbow gas tightness detection device

Abstract

The utility model discloses an air tightness detection device of air inlet elbow, the utility model discloses a work table, the work table top outer wall is provided with fixed establishment no.

Description

Technical Field

[0001] This utility model relates to the field of intake pipe processing technology, and in particular to an intake pipe air tightness testing device. Background Technology

[0002] The intake bend is an important component of the engine intake system. It is usually made of plastic, composite materials or metal. It is responsible for guiding and delivering air. Its complex shape is adapted to the compact engine compartment layout. It must have extremely high airtightness. Therefore, the airtightness of the intake bend is tested after production.

[0003] A search revealed a Chinese patent publication number CN220854039U, which discloses an intercooler intake bend airtightness testing device. The device includes: an intercooler face sealing panel for sealing the intercooler plane opening of the intercooler intake bend; a flange face sealing plate for sealing the flange face opening of the intercooler intake bend; a pressure gauge sealed on the flange face sealing plate; and a pipe connector sealed on the flange face sealing plate. This patent allows for separate airtightness testing of the intercooler intake bend before diesel engine assembly, avoiding the need for repeated disassembly and reassembly of components during diesel engine testing to detect leaks.

[0004] However, different types of intake bends use different connection methods (rectangular flange, round flange, and clamp, etc.). When testing different types of intake bends, this patent requires the removal of the pressure gauge and air supply pipe and connection to the corresponding sealing panel, which is cumbersome, time-consuming, and inconvenient to use. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an airtightness testing device for an air intake bend.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An air tightness testing device for an intake bend includes a workbench. A fixing mechanism one and a fixing mechanism two are provided on the top outer wall of the workbench. The fixing mechanism two is connected to the workbench via a moving component one and a moving component two, and is located on one side of the fixing mechanism one. The fixing mechanism two includes a support frame and a fixing block. The fixing block is fixedly connected to the top outer wall of the support frame. A connecting plate is provided at one end of the fixing block. A connecting cylinder is connected to one side of the connecting plate via a connecting component. A sealing ring that contacts the connecting cylinder is provided on the side wall of the connecting plate. A connecting piece is provided at one end of the connecting cylinder. The fixing mechanism one and the fixing mechanism two have the same structure.

[0007] As a further improvement of this utility model: a high-pressure air supply mechanism is installed on the outer wall of the bottom of the workbench, and one end of the fixing block of the fixing mechanism is provided with two connection interfaces. One connection interface is connected to the high-pressure air supply mechanism through a connecting pipe, and the other connection interface is connected to a pressure gauge.

[0008] As a further embodiment of this utility model: the connecting component includes multiple limiting blocks and a moving ring. The multiple limiting blocks are fixedly connected to the side wall of the connecting plate. The limiting blocks are arranged circumferentially. The side wall of the connecting cylinder is provided with a limiting groove that cooperates with the limiting blocks. The side wall of the connecting plate is fixed with a sealing ring that contacts the connecting cylinder. The moving ring is slidably fitted to the outer wall of the fixed block.

[0009] As a further improvement of this utility model: multiple L-shaped rods are circumferentially fixedly connected to the side wall of the movable ring, the L-shaped rods are offset from the limiting block, and the L-shaped rods are slidably engaged with the limiting slot.

[0010] As a further embodiment of this utility model: a guide rod is fixedly connected to the side wall of the connecting plate, the active bevel gear is slidably engaged with the guide rod, and a drive assembly for driving the moving ring is provided on the side wall of the support frame.

[0011] As a further embodiment of this utility model: the drive assembly includes a threaded rod and a rotating rod. The threaded rod is rotatably connected to the side wall of the connecting plate, and the rotating rod is disposed on one side of the support frame. One end of the rotating rod is equipped with a driving bevel gear, and one end of the threaded rod is equipped with a driven bevel gear.

[0012] As a further embodiment of this utility model: the driving bevel gear meshes with the driven bevel gear, and the number of teeth of the driving bevel gear is greater than that of the driven bevel gear, and the moving ring is threaded to the outer wall of the threaded rod.

[0013] As a further embodiment of this utility model: the first moving component includes two sliding grooves and a moving frame. The two sliding grooves are parallel to each other on the top outer wall of the worktable. The moving frame is limited and damped in a sliding connection with the two sliding grooves. The second moving component includes a guide rail and a slider. The guide rail is fixedly connected to the top outer wall of the worktable. The slider is damped and slidably connected to the top outer wall of the guide rail. The support frame is damped and rotatably connected to the top outer wall of the slider.

[0014] Compared with the prior art, the present invention provides an airtightness testing device for an air intake bend, which has the following advantages: This utility model, by providing a connecting component, facilitates the replacement of connecting parts according to the interface type of the intake bend, enabling the testing of different intake bends and making operation convenient.

[0015] This invention, by incorporating a driving bevel gear and a driven bevel gear, achieves a faster movement of the moving ring along the threaded rod and reduces operation time because the driving bevel gear has more teeth than the driven bevel gear, and the driven bevel gear drives the threaded rod to rotate at a higher speed than the rotating rod.

[0016] This utility model, by providing a movable component one and a movable component two, enables the connector in the fixed mechanism two to be connected and tested with different types of air intake bends, thereby improving the practicality of the device.

[0017] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an airtightness testing device for an air intake bend proposed in this utility model. Figure 2 This is a schematic diagram of the fixing mechanism 2 of the air tightness testing device for the intake bend pipe proposed in this utility model; Figure 3 This is a schematic diagram of the drive assembly of an air tightness testing device for an intake bend, as proposed in this utility model. Figure 4 This is a partial structural schematic diagram of an airtightness testing device for an air intake bend proposed in this utility model.

[0019] In the diagram: 1. Workbench; 2. Fixing mechanism one; 3. Fixing mechanism two; 4. Moving component one; 5. Moving component two; 6. Support frame; 7. Fixing block; 8. Connecting plate; 9. Connecting cylinder; 10. Connecting piece; 11. L-shaped rod; 12. Limiting block; 13. Moving ring; 14. Guide rod; 15. Drive assembly; 16. Threaded rod; 17. Rotating rod; 18. Driving bevel gear; 19. Driven bevel gear; 20. Sliding groove; 21. Moving frame; 22. Guide slide rail; 23. Slider; 24. Pressure gauge; 25. High-pressure air supply mechanism. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Example 1

[0023] An airtightness testing device for an intake bend, such as Figures 1 to 3 As shown, the workbench 1 is provided with a fixing mechanism 2 and a fixing mechanism 3 on the top outer wall of the workbench 1. The fixing mechanism 3 is connected to the workbench 1 through a moving component 4 and a moving component 5, and the fixing mechanism 3 is located on one side of the fixing mechanism 2.

[0024] The fixing mechanism 2 3 includes a support frame 6 and a fixing block 7. The fixing block 7 is fixedly connected to the top outer wall of the support frame 6. A connecting plate 8 is provided at one end of the fixing block 7. A connecting cylinder 9 is connected to one side of the connecting plate 8 through a connecting component. A sealing ring that contacts the connecting cylinder 9 is provided on the side wall of the connecting plate 8. A connecting member 10 is provided at one end of the connecting cylinder 9. The connecting member 10 can be any existing mature structure for connecting with the intake bend pipe, such as a rectangular flange or a round flange.

[0025] The connecting assembly includes multiple limiting blocks 12 and a moving ring 13. The limiting blocks 12 are fixedly connected to the side wall of the connecting plate 8 and are arranged circumferentially. The side wall of the connecting cylinder 9 is provided with limiting grooves that cooperate with the limiting blocks 12. A sealing ring that contacts the connecting cylinder 9 is fixedly installed on the side wall of the connecting plate 8. The moving ring 13 is slidably fitted to the outer wall of the fixed block 7. Multiple L-shaped rods 11 are circumferentially fixedly connected to the side wall of the moving ring 13. The L-shaped rods 11 are offset from the limiting blocks 12 and slidably fitted with the limiting grooves. A guide rod 14 is fixedly connected to the side wall of the connecting plate 8. Gear 18 is slidably engaged with guide rod 14. The side wall of the support frame 6 is provided with a drive assembly 15 for driving the moving ring 13 to move. The drive assembly 15 includes a threaded rod 16 and a rotating rod 17. The threaded rod 16 is rotatably connected to the side wall of the connecting plate 8. The rotating rod 17 is located on one side of the support frame 6. One end of the rotating rod 17 is equipped with a driving bevel gear 18, and one end of the threaded rod 16 is equipped with a driven bevel gear 19. The driving bevel gear 18 and the driven bevel gear 19 are engaged in transmission, and the number of teeth of the driving bevel gear 18 is greater than that of the driven bevel gear 19. The moving ring 13 is threadedly engaged with the outer wall of the threaded rod 16.

[0026] The structure of the fixing mechanism 1 2 and the fixing mechanism 2 3 is basically the same. A high-pressure air supply mechanism 25 is installed on the bottom outer wall of the workbench 1. One end of the fixing block 7 of the fixing mechanism 1 2 is provided with two connection interfaces. One connection interface is connected to the high-pressure air supply mechanism 25 through a connecting pipe, and the other connection interface is connected to a pressure gauge 24. The high-pressure air supply mechanism 25 and the pressure gauge 24 are both existing mature equipment, so they will not be described in detail here.

[0027] All electrical components in this embodiment are electrically connected to an external controller and external mains power.

[0028] During testing, select the connecting cylinder 9 with the corresponding connecting piece 10 installed according to the interface of the intake bend. Then, align the limiting slot with the L-shaped rod 11 in the fixing mechanism 12 and move it towards the connecting plate 8. After the L-shaped rod 11 passes the limiting slot, rotate the connecting cylinder 9 to align the limiting slot with the limiting block 12. Then, insert the limiting block 12 into the limiting slot for initial fixation. Rotate the rotating rod 17, and through the transmission of the driving bevel gear 18 and the driven bevel gear 19, drive the threaded rod 16 to rotate, causing the moving ring 13 to move along the threaded rod 16, so that one end of the L-shaped rod 11 moves closer to the connecting plate 8. The L-shaped rod 11 presses the connecting cylinder 9 to fix it. Repeat the operation to replace the connecting piece 10 in the fixing mechanism 23. Then, connect the intake bend to the connecting piece 10 in the fixing mechanism 12, and turn the other end of the intake bend towards the fixing plate 8. Fixed mechanism 23 is then adjusted by moving component 14 and moving component 25 so that the connecting piece 10 in fixed mechanism 23 can be connected to the other end of the air intake bend. High pressure air supply mechanism 25 inflates air into the air intake bend through the connecting pipe via fixed mechanism 2. The air pressure in the air intake bend is observed by air pressure gauge 24. After the air pressure reaches the predetermined pressure, the inflation stops. The change in air pressure in the air intake bend is observed within a predetermined time. If the pressure drop is greater than the standard threshold, the air tightness of the air intake bend is unqualified. Otherwise, the air tightness is qualified within the test standard. Since the number of teeth of the driving bevel gear 18 is greater than that of the driven bevel gear 19, the rotation speed of the threaded rod 16 driven by the driven bevel gear 19 is greater than that of the rotating rod 17, which speeds up the movement of the moving ring 13 along the threaded rod 16 and reduces the operation time.

[0029] The connection components are designed to facilitate the replacement of connector 10 according to the interface type of the intake bend, enabling testing of different intake bends and simplifying the operation.

[0030] By providing an active bevel gear 18 and a driven bevel gear 19, since the number of teeth of the active bevel gear 18 is greater than that of the driven bevel gear 19, the driven bevel gear 19 drives the threaded rod 16 to rotate at a speed greater than that of the rotating rod 17, thereby accelerating the movement speed of the moving ring 13 along the threaded rod 16 and reducing the operation time.

[0031] Example 2

[0032] An airtightness testing device for an intake bend pipe, this embodiment is based on embodiment 1, with the following improvements, such as... Figure 2 , Figure 4 As shown, the moving component 4 includes two sliding grooves 20 and a moving frame 21. The two sliding grooves 20 are parallel to each other on the top outer wall of the workbench 1, and the moving frame 21 is limited and damped in sliding connection with the two sliding grooves 20.

[0033] The second moving component 5 includes a guide rail 22 and a slider 23. The guide rail 22 is fixedly connected to the top outer wall of the worktable 1, the slider 23 is damped and slidably connected to the top outer wall of the guide rail 22, and the support frame 6 is damped and rotatably connected to the top outer wall of the slider 23.

[0034] When fixing the intake bend, the position of the fixing mechanism 23 can be changed by sliding the movable frame 21 along the sliding groove 20 and sliding the slider 23 along the guide rail 22. The support frame 6 can rotate relative to the slider 23 to change the orientation of the connecting member 10 in the fixing mechanism 23, so that the connecting member 10 in the fixing mechanism 23 can be connected and tested with intake bends of different lengths and orientation angles, thereby improving the practicality of the device.

[0035] By incorporating movable component 1 4 and movable component 2 5, the connector 10 in the fixed mechanism 2 3 can be connected and tested with different types of intake bends, thus improving the practicality of the device.

[0036] Working principle: During testing, select the connecting cylinder 9 with the corresponding connecting piece 10 installed according to the interface of the intake bend. Then, align the limiting slot with the L-shaped rod 11 in the fixing mechanism 1 and move it towards the connecting plate 8. After the L-shaped rod 11 passes the limiting slot, rotate the connecting cylinder 9 to align the limiting slot with the limiting block 12. Then, insert the limiting block 12 into the limiting slot for initial fixation. Rotate the rotating rod 17, and drive the threaded rod 16 to rotate through the transmission of the active bevel gear 18 and the driven bevel gear 19, causing the moving ring 13 to move along the threaded rod 16, so that one end of the L-shaped rod 11 moves closer to the connecting plate 8. The L-shaped rod 11 presses the connecting cylinder 9 to fix it. Repeat the operation to replace the connecting piece 10 in the fixing mechanism 2. Then connect the intake bend to the connecting piece 10 in the fixing mechanism 1, and face the other end of the intake bend towards the fixing mechanism 2. Then, the moving frame 21 slides along the sliding groove 20 and the slider 23 slides along the guide. The sliding rail 22 changes the position of the fixed mechanism 2 3, and the support frame 6 can rotate relative to the slider 23 to change the orientation of the connecting piece 10 in the fixed mechanism 2 3 and connect it to the other end of the air intake bend. This allows the connecting piece 10 in the fixed mechanism 2 3 to be connected and tested with air intake bends of different lengths and orientation angles. The high-pressure air supply mechanism 25 fills the air intake bend with air through the connecting pipe and the fixed mechanism 1 2. The air pressure in the air intake bend is observed through the air pressure gauge 24. After the air pressure reaches the predetermined pressure, the filling stops. The change in air pressure in the air intake bend within the predetermined time is observed. If the pressure drop is greater than the standard threshold, the air tightness of the air intake bend is unqualified. Otherwise, the air tightness is qualified within the test standard. Since the number of teeth of the active bevel gear 18 is greater than that of the driven bevel gear 19, the driven bevel gear 19 drives the threaded rod 16 to rotate at a speed greater than that of the rotating rod 17, which speeds up the movement of the moving ring 13 along the threaded rod 16 and reduces the operation time.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An airtightness testing device for an intake bend, comprising a workbench (1), characterized in that, The top outer wall of the workbench (1) is provided with a fixing mechanism one (2) and a fixing mechanism two (3). The fixing mechanism two (3) is connected to the workbench (1) through a moving component one (4) and a moving component two (5). The fixing mechanism two (3) is located on one side of the fixing mechanism one (2). The fixing mechanism two (3) includes a support frame (6) and a fixing block (7). The fixing block (7) is fixedly connected to the top outer wall of the support frame (6). One end of the fixing block (7) is provided with a connecting plate (8). One side of the connecting plate (8) is connected to a connecting cylinder (9) through a connecting component. The side wall of the connecting plate (8) is provided with a sealing ring that contacts the connecting cylinder (9). One end of the connecting cylinder (9) is provided with a connecting piece (10). The structure of the fixing mechanism one (2) and the fixing mechanism two (3) is the same.

2. The airtightness testing device for an intake bend according to claim 1, characterized in that, The workbench (1) is equipped with a high-pressure gas supply mechanism (25) on the bottom outer wall. The fixing block (7) of the fixing mechanism (2) has two connection interfaces at one end. One connection interface is connected to the high-pressure gas supply mechanism (25) through a connecting pipe, and the other connection interface is connected to a pressure gauge (24).

3. The airtightness testing device for an intake bend according to claim 1, characterized in that, The connecting assembly includes multiple limiting blocks (12) and a moving ring (13). The multiple limiting blocks (12) are fixedly connected to the side wall of the connecting plate (8). The limiting blocks (12) are arranged circumferentially. The side wall of the connecting cylinder (9) is provided with a limiting groove that cooperates with the limiting blocks (12). The side wall of the connecting plate (8) is fixed with a sealing ring that contacts the connecting cylinder (9). The moving ring (13) is slidably fitted to the outer wall of the fixed block (7).

4. The airtightness testing device for an intake bend according to claim 3, characterized in that, The moving ring (13) has multiple L-shaped rods (11) fixedly connected to its side wall in the circumferential direction. The L-shaped rods (11) are offset from the limiting block (12), and the L-shaped rods (11) slide with the limiting slot.

5. The airtightness testing device for an intake bend according to claim 4, characterized in that, The connecting plate (8) is fixedly connected to the side wall of the guide rod (14), and the active bevel gear (18) is slidably engaged with the guide rod (14). The support frame (6) is provided with a drive assembly (15) for driving the moving ring (13) to move.

6. The airtightness testing device for an intake bend according to claim 5, characterized in that, The drive assembly (15) includes a threaded rod (16) and a rotating rod (17). The threaded rod (16) is rotatably connected to the side wall of the connecting plate (8), and the rotating rod (17) is located on one side of the support frame (6). One end of the rotating rod (17) is equipped with a driving bevel gear (18), and one end of the threaded rod (16) is equipped with a driven bevel gear (19).

7. The airtightness testing device for an intake bend according to claim 6, characterized in that, The active bevel gear (18) meshes with the driven bevel gear (19), and the number of teeth of the active bevel gear (18) is greater than that of the driven bevel gear (19). The moving ring (13) is threaded to the outer wall of the threaded rod (16).

8. The airtightness testing device for an intake bend according to claim 1, characterized in that, The first moving component (4) includes two sliding grooves (20) and a moving frame (21). The two sliding grooves (20) are parallel to each other on the top outer wall of the workbench (1). The moving frame (21) is limited and damped in sliding connection with the two sliding grooves (20). The second moving component (5) includes a guide rail (22) and a slider (23). The guide rail (22) is fixedly connected to the top outer wall of the workbench (1). The slider (23) is damped and slidably connected to the top outer wall of the guide rail (22). The support frame (6) is damped and rotatably connected to the top outer wall of the slider (23).

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