Automobile long tubular column air tightness testing device
By designing an air tightness testing device for automobile long pipe strings that includes a chute, a sliding column and a bolt slot structure, the problem that the existing device is difficult to adapt to different lengths and pipe orifice directions has been solved, and a wider scope of application and Higher detection efficiency.
Patent Information
- Application Number
- CN202421220483.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-30
AI Technical Summary
The existing long tube string airtightness test devices are difficult to adjust to adapt to automobile long tube strings of different lengths and pipe opening directions, resulting in a low application range.
A testing device including a first support frame and a second support frame is designed to detect long pipe strings of different lengths and nozzle directions through chute and sliding column structures, and the sealing block is fixed through bolts and slot structures. The position and orientation are suitable for the detection of large quantities of long pipe strings of the same specifications.
The device can effectively detect long automobile pipe strings of different lengths and nozzle directions, which improves the scope of application of the device. By fixing the position and orientation of the sealing block, it improves the testing speed of large batches of long pipe strings of the same specifications.
Smart Images
Figure CN222353457U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of automobile parts production, in particular to an automobile long pipe column air tightness testing device. Background Art
[0002] The long column of a car, also known as the steering column, is an important component in the car steering system. Its main function is to transmit the steering angle and force, so that the driver can control the direction of the vehicle through the steering wheel.
[0003] After the automobile long tube column is produced, it needs to be tested for air tightness to determine whether the product has defects such as fine cracks and ensure the safety of the product. When performing air tightness testing on the automobile long tube column, the pipe mouth of the automobile long tube column needs to be sealed to make the inside of the long tube column in a sealed state, and then the internal air pressure of the long tube column is changed by inflating or exhausting air into the long tube column. When the air pressure reaches a certain level, the inflation or exhaust is stopped, and then the long tube column is judged whether it has defects based on the change in air pressure inside the long tube column over a period of time. However, due to the different specifications of some automobile long tube columns and the different directions of the pipe mouths of the long tube columns, the existing long tube column air tightness testing device is difficult to adjust to seal the pipe mouths at different positions, resulting in a low scope of application of the device.
[0004] To this end, the utility model provides an automobile long pipe column air tightness testing device. Utility Model Content
[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.
[0006] The technical solution adopted by the utility model to solve its technical problems is: the utility model is a vehicle long tube column air tightness testing device, comprising a first support frame; a plurality of connecting rods are fixedly connected to the side wall of the first support frame; a second support frame is slidably connected to the middle part of the plurality of connecting rods; a slide groove is provided in the middle part of the first support frame and the second support frame; a sliding column is slidably connected to the middle part of the slide groove; a fixed sleeve is fixedly connected to the bottom of the sliding column; a sliding rod is slidably connected to the middle part of the fixed sleeve; a sealing block is fixedly connected to the end of the sliding rod facing the inside of the first support frame; a spring is fixedly connected to the side wall of the sealing block; the other end of the spring is fixedly connected to the inside of the fixed sleeve; a detection component is fixedly connected to the side wall of the first support frame; an air guide pipe is fixedly connected to the middle part of the sealing block inside the first support frame; one end of the air guide pipe is located on the opposite side of a pair of sealing blocks, and the other end is connected to the detection component; through the above structure, long tube columns of vehicles with different lengths and different pipe mouth directions can be tested, thereby improving the scope of application of the device.
[0007] Preferably, a first bolt is threadedly connected to the middle of the sliding column; a pair of slots are opened in the middle of the sliding column; the bottom of the first bolt is rotatably connected to a rotating shaft; a fixed plate is fixedly connected to the bottom of the rotating shaft; the fixed plate is slidably arranged in the middle of a pair of slots, and the fixed plate is arranged between the bottom of the sliding groove and the fixed sleeve; through the above structure, the position and orientation of a pair of sealing blocks can be fixed, thereby facilitating the detection of large quantities of long pipe columns of the same specification and improving the testing speed of large quantities of long pipe columns of the same specification.
[0008] Preferably, the tops of the first support frame and the second support frame are both slidably connected with a pair of limit columns; the tops of each pair of limit columns are fixedly connected with a top plate; the tops of the first support frame and the second support frame are both threadedly connected with a second bolt; the second bolt is arranged below the top plate; through the above structure, the placement height of the long tube column can be adjusted according to the different diameters of the long tube column, so as to facilitate the sealing of the pipe orifice of the long tube column.
[0009] Preferably, a plurality of limit grooves are provided on the top of the connecting rod; a clamping plate is slidably connected to the top of the second support frame; the clamping plate and the limit grooves are arranged to cooperate with each other; through the above structure, the distance between the second support frame and the first support frame is difficult to change, which is convenient for air tightness testing of large quantities of long automobile columns of the same length specifications.
[0010] Preferably, the sealing block is fixedly connected to a fixed column on the side away from the sliding rod; a plurality of elastic sheets are fixedly connected to the end of the fixed column; a cleaning cloth is fixedly connected to the side of the plurality of elastic sheets away from the fixed column; through the above structure, the pipe mouth of the long pipe column can be cleaned, thereby reducing the occurrence of a loose connection between the sealing block and the pipe mouth due to the presence of impurities at the pipe mouth, thereby reducing the impact on the air tightness test.
[0011] Preferably, the bottom of the sliding column is rotatably connected to a plurality of rollers; the plurality of rollers are arranged in a circular array at the bottom of the sliding column, and the plurality of rollers are arranged between the sliding column and the top of the slide groove; through the above structure, the movement of the sliding column becomes more flexible, thereby improving the flexibility of the device operation.
[0012] The beneficial effects of the utility model are as follows:
[0013] 1. The utility model discloses an air tightness testing device for a long automobile column. A pair of slide columns are slid on a slide groove to make the slide columns located in the direction facing the pipe mouth of the long automobile column. Then, a sliding rod is slid to fit the sealing block with the pipe mouth of the long automobile column to complete the sealing of the pipe mouth of the long automobile column. Through the above structure, long automobile columns of different lengths and different pipe mouth directions can be tested, thereby improving the application scope of the device.
[0014] 2. The utility model describes an automobile long tube column air tightness testing device, which rotates the first bolt to move the first bolt upward along the middle of the sliding column, thereby driving the fixed plate to slide upward along the middle of the slot. The fixed plate and the sliding column will squeeze the first support frame in the middle and the friction force at the contact position will gradually increase, making it difficult for the sliding column to continue to slide and rotate inside the slide groove. Through the above structure, the position and orientation of a pair of sealing blocks can be fixed, thereby facilitating the detection of large quantities of long tube columns of the same specification and improving the testing speed of large quantities of long tube columns of the same specification. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The utility model will be further described below in conjunction with the accompanying drawings.
[0016] Figure 1 It is a three-dimensional diagram of the utility model;
[0017] Figure 2 It is a structural schematic diagram of the slideway in the utility model;
[0018] Figure 3 It is a structural schematic diagram of the elastic sheet in the utility model;
[0019] Figure 4 It is a structural schematic diagram of the fixed sleeve in the utility model;
[0020] Figure 5 It is a structural schematic diagram of the top plate in the utility model;
[0021] In the figure: 1. first support frame; 12. connecting rod; 13. second support frame; 14. slide groove; 15. slide column; 16. fixing sleeve; 17. slide rod; 18. sealing block; 19. spring; 110. detection component; 111. air guide tube; 2. first bolt; 21. slot; 22. rotating shaft; 23. fixing plate; 3. limiting column; 31. top plate; 32. second bolt; 4. limiting groove; 41. card plate; 5. fixing column; 51. elastic sheet; 52. cleaning cloth; 6. roller; 7. rubber pad. DETAILED DESCRIPTION
[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0023] like Figures 1 to 4As shown, an automobile long column air tightness testing device described in an embodiment of the utility model comprises a first support frame 1; a plurality of connecting rods 12 are fixedly connected to the side wall of the first support frame 1; a second support frame 13 is slidably connected to the middle part of the plurality of connecting rods 12; a slide groove 14 is provided in the middle part of the first support frame 1 and the second support frame 13; a slide column 15 is slidably connected to the middle part of the slide groove 14; a fixing sleeve 16 is fixedly connected to the bottom of the slide column 15; a sliding rod 17 is slidably connected to the middle part of the fixing sleeve 16; a sealing block 18 is fixedly connected to the end of the sliding rod 17 facing the inside of the first support frame 1; a spring 19 is fixedly connected to the side wall of the sealing block 18; the other end of the spring 19 is fixedly connected to the inside of the fixing sleeve 16; a detection component 110 is fixedly connected to the side wall of the first support frame 1; an air guide tube 111 is fixedly connected to the middle part of the sealing block 18 inside the first support frame 1; one end of the air guide tube 111 is located between a pair of sealing blocks 18 is opposite to the surface, and the other end is connected to the detection component 110; when working, the automobile long tube column that needs to be tested is placed on the first support frame 1 and the second support frame 13, and then a pair of sliding columns 15 are slid on the slide groove 14, so that the sliding column 15 is located in the direction facing the pipe mouth of the automobile long tube column, and then the sliding rod 17 is slid to fit the sealing block 18 with the pipe mouth of the automobile long tube column, and then the air pump inside the detection component 110 is started, and the gas inside the automobile long tube column is extracted through the air guide pipe 111. After the air pressure inside the automobile long tube column drops to a certain level, the air extraction is stopped and the air guide pipe 111 is closed. At this time, the interior of the automobile long tube column is in a sealed state, and then the detection component 110 is used to detect whether the air pressure inside the automobile long tube column changes within a period of time, and whether the automobile long tube column is sealed or not is judged in turn. Through the above structure, automobile long tube columns of different lengths and different pipe mouth directions can be tested to enhance the scope of application of the device.
[0024] like Figures 1 to 4As shown, the middle part of the sliding column 15 is threadedly connected with the first bolt 2; the middle part of the sliding column 15 is provided with a pair of slots 21; the bottom of the first bolt 2 is rotatably connected with the rotating shaft 22; the bottom of the rotating shaft 22 is fixedly connected with a fixing plate 23; the fixing plate 23 is slidably arranged in the middle part of the pair of slots 21, and the fixing plate 23 is arranged between the bottom of the sliding groove 14 and the fixing sleeve 16; when working, the first bolt 2 is rotated to make the first bolt 2 move upward along the middle part of the sliding column 15, thereby driving the rotating shaft 22 to move upward, and at this time the fixing plate 23 will It slides upward in the middle of a pair of slots 21 and contacts the bottom of the first support frame 1. Through the continuous rotation of the first bolt 2, the fixing plate 23 and the sliding column 15 will squeeze the first support frame 1 in the middle and the friction force at the contact position will gradually increase, making it difficult for the sliding column 15 to continue to slide and rotate inside the slide groove 14, thereby fixing the position and orientation of the sealing block 18. Through the above structure, the position and orientation of a pair of sealing blocks 18 can be fixed, thereby facilitating the detection of large quantities of long pipe columns of the same specification and improving the testing speed of large quantities of long pipe columns of the same specification.
[0025] like Figures 1 to 5 As shown, the tops of the first support frame 1 and the second support frame 13 are slidably connected with a pair of limit columns 3; the tops of each pair of the limit columns 3 are fixedly connected with a top plate 31; the tops of the first support frame 1 and the second support frame 13 are threadedly connected with a second bolt 32; the second bolt 32 is arranged below the top plate 31; during operation, the second bolt 32 is rotated to make the second bolt 32 rise or fall, at this time, the top plate 31 will rise or fall synchronously with the second bolt 32, and when testing the long tube column, the long tube column is placed above a pair of top plates 31, and through the adjustment of a pair of second bolts 32, the axis center of the long tube column and the axis center of the sealing block 18 are roughly in the same plane, so that the sealing block 18 is used to seal the pipe mouth of the automobile long tube column. Through the above structure, the placement height of the long tube column can be adjusted according to the different diameters of the long tube column, which is convenient for sealing the pipe mouth of the long tube column.
[0026] like Figures 1 to 5 As shown, a plurality of limit grooves 4 are provided on the top of the connecting rod 12; a clamping plate 41 is slidably connected to the top of the second support frame 13; the clamping plate 41 and the limit groove 4 are arranged to cooperate with each other; during operation, after the second support frame 13 is slid apart from the first support frame 1, the clamping plate 41 is slid into the interior of the first support frame 1, so that the clamping plate 41 is sunk into a limit groove 4, thereby jamming the limit groove 4, making it difficult for the second support frame 13 to continue to slide in the middle of the connecting rod 12, thereby making it difficult for the distance between the second support frame 13 and the first support frame 1 to change, which is convenient for air tightness testing of a large number of long automobile pipe columns of the same length specification.
[0027] like Figures 1 to 4As shown, a fixed column 5 is fixedly connected to the side of the sealing block 18 away from the sliding rod 17; a plurality of elastic sheets 51 are fixedly connected to the end of the fixed column 5; a cleaning cloth 52 is fixedly connected to the side of the plurality of elastic sheets 51 away from the fixed column 5; during operation, when the sealing block 18 is moved toward the pipe mouth of the long pipe column by sliding the sliding rod 17, the cleaning cloth 52 will first contact the pipe mouth of the long pipe column and clean some impurities at the pipe mouth by friction. When the cleaning cloth 52 enters the interior of the long pipe column through the pipe mouth, the pipe mouth will squeeze the plurality of elastic sheets 51, so that the plurality of elastic sheets 51 are bent and deformed toward the direction of the sealing block 18, so that the cleaning cloth 52 enters the interior of the pipeline, and then the sealing block 18 blocks the pipe mouth. Through the above structure, the pipe mouth of the long pipe column can be cleaned, and the situation that the sealing block 18 and the pipe mouth are not tightly combined due to the presence of impurities at the pipe mouth is reduced, thereby reducing the impact on the air tightness test.
[0028] like Figures 1 to 4 As shown, the bottom of the sliding column 15 is rotatably connected to a plurality of rollers 6; the plurality of rollers 6 are arranged in a circular array at the bottom of the sliding column 15, and the plurality of rollers 6 are arranged between the sliding column 15 and the top of the slide groove 14; when working, when the sliding column 15 slides along the slide groove 14, the plurality of rollers 6 will roll on the top of the first support frame 1, so that the sliding friction between the bottom of the sliding column 15 and the top of the first support frame 1 is converted into rolling friction, so that the movement of the sliding column 15 becomes more flexible, thereby improving the flexibility of the device operation.
[0029] like Figure 3 As shown, a rubber pad 7 is fixedly connected to the bottom of the first support frame 1; the rubber pad 7 is located on both sides of the bottom of the slide groove 14; when working, when the fixing plate 23 is driven to move upward by the rotation of the first bolt 2, the fixing plate 23 will contact with the rubber pad 7 and squeeze the rubber pad 7, and the position where the rubber pad 7 is squeezed will have a slight depression, making it more difficult for the fixing plate 23 trapped therein to move, thereby improving the fixing effect of the slide column 15.
[0030] During operation, the long tube column of the automobile to be tested is placed on the first support frame 1 and the second support frame 13, and then a pair of slide columns 15 are slid on the slide groove 14 to make the slide column 15 located in the direction facing the pipe mouth of the long tube column of the automobile, and then the sliding rod 17 is slid to fit the sealing block 18 with the pipe mouth of the long tube column of the automobile, and then the air pump inside the detection component 110 is started to extract the gas inside the long tube column of the automobile through the air guide pipe 111. After the air pressure inside the long tube column of the automobile is reduced to a certain level, the air extraction is stopped and the air guide pipe 111 is closed. At this time, the interior of the long tube column of the automobile is in a sealed state, and then the detection component 110 is used to detect whether the air pressure inside the long tube column of the automobile is within a period of time. Whether there is any change, determine whether the seal of the long column of the automobile is qualified in turn, rotate the first bolt 2 to make the first bolt 2 move upward along the middle of the sliding column 15, and then drive the rotating shaft 22 to move upward, at this time, the fixing plate 23 will slide upward in the middle of a pair of grooves 21 and contact with the bottom of the first support frame 1, through the continuous rotation of the first bolt 2, the fixing plate 23 and the sliding column 15 will squeeze the first support frame 1 in the middle and the friction force at the contact position will gradually increase, making it difficult for the sliding column 15 to continue to slide and rotate inside the sliding groove 14, thereby fixing the position and direction of the sealing block 18, and rotating the second bolt 32 to make the second bolt 32 rise or fall, at this time the top plate 31 The second bolt 32 will rise or fall synchronously. When testing the long pipe column, the long pipe column is placed above a pair of top plates 31. By adjusting the pair of second bolts 32, the axis of the long pipe column and the axis of the sealing block 18 are roughly in the same plane. After the second support frame 13 and the first support frame 1 are slid apart, the clamping plate 41 is slid into the interior of the first support frame 1, so that the clamping plate 41 is trapped in a limiting groove 4, thereby locking the limiting groove 4, making it difficult for the second support frame 13 to continue to slide in the middle of the connecting rod 12, so that the distance between the second support frame 13 and the first support frame 1 is difficult to change. When 18 moves toward the nozzle of the long pipe column, the cleaning cloth 52 will first contact with the nozzle of the long pipe column and clean some impurities at the nozzle by friction. When the cleaning cloth 52 enters the interior of the long pipe column through the nozzle, the nozzle will squeeze the multiple elastic sheets 51, causing the multiple elastic sheets 51 to bend and deform toward the sealing block 18, so that the cleaning cloth 52 enters the interior of the pipeline, and then the sealing block 18 seals the nozzle. When the sliding column 15 slides along the slide groove 14, the multiple rollers 6 roll on the top of the first support frame 1, so that the sliding friction between the bottom of the sliding column 15 and the top of the first support frame 1 is converted into rolling friction, so that the movement of the sliding column 15 becomes more flexible.
[0031] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. An automobile long column air tightness testing device, comprising a first support frame (1); characterized in that: The side wall of the first support frame (1) is fixedly connected with a plurality of connecting rods (12); the middle of the plurality of connecting rods (12) is slidably connected with the second support frame (13); a sliding groove (14) is provided in the middle of the first support frame (1) and the second support frame (13); a sliding column (15) is slidably connected in the middle of the sliding groove (14); a fixing sleeve (16) is fixedly connected to the bottom of the sliding column (15); a sliding rod (17) is slidably connected in the middle of the fixing sleeve (16); the sliding rod (17) faces the first support frame. A sealing block (18) is fixedly connected to one end of the interior of the first support frame (1); a spring (19) is fixedly connected to the side wall of the sealing block (18); the other end of the spring (19) is fixedly connected to the interior of the fixing sleeve (16); a detection component (110) is fixedly connected to the side wall of the first support frame (1); an air guide tube (111) is fixedly connected to the middle of the sealing block (18) inside the first support frame (1); one end of the air guide tube (111) is located on the opposite side of a pair of sealing blocks (18), and the other end is connected to the detection component (110).
2. The air tightness testing device for a long automobile column according to claim 1, characterized in that: The middle of the slide column (15) is threadedly connected to a first bolt (2); a pair of slots (21) are provided in the middle of the slide column (15); the bottom of the first bolt (2) is rotatably connected to a rotating shaft (22); the bottom of the rotating shaft (22) is fixedly connected to a fixing plate (23); the fixing plate (23) is slidably arranged in the middle of the pair of slots (21), and the fixing plate (23) is arranged between the bottom of the slide groove (14) and the fixing sleeve (16).
3. The air tightness testing device for a long automobile column according to claim 2, characterized in that: A pair of limiting columns (3) are slidably connected to the top of the first support frame (1) and the second support frame (13); a top plate (31) is fixedly connected to the top of each pair of limiting columns (3); a second bolt (32) is threadedly connected to the top of the first support frame (1) and the second support frame (13); the second bolt (32) is arranged below the top plate (31).
4. The air tightness testing device for a long automobile column according to claim 3, characterized in that: A plurality of limiting grooves (4) are provided on the top of the connecting rod (12); a clamping plate (41) is slidably connected to the top of the second supporting frame (13); and the clamping plate (41) and the limiting grooves (4) are arranged to cooperate with each other.
5. The air tightness testing device for a long automobile column according to claim 4, characterized in that: A fixed column (5) is fixedly connected to the side of the sealing block (18) away from the sliding rod (17); a plurality of elastic sheets (51) are fixedly connected to the end of the fixed column (5); and a cleaning cloth (52) is fixedly connected to the side of the plurality of elastic sheets (51) away from the fixed column (5).
6. The air tightness testing device for a long automobile column according to claim 5, characterized in that: The bottom of the sliding column (15) is rotatably connected to a plurality of rollers (6); the plurality of rollers (6) are arranged in a circular array at the bottom of the sliding column (15), and the plurality of rollers (6) are arranged between the sliding column (15) and the top of the sliding groove (14).