A pressure differential pipeline capable of quickly connecting a hose, a preparation device and a method thereof

Abstract

The present invention belongs to the technical field of automobile pipeline accessories, and in particular to a pressure differential pipeline, a preparation device and a method for quickly connecting a hose. In view of the existing problem that workers need to manually place the pipeline in a stamping device, attachments on the outer wall of the pipeline affect the stamping and forming of the pipeline joint, and the pipeline cannot be inspected, the following scheme is proposed, which includes a stamping table, a recess is provided in the stamping table for making way for the pressure differential pipe, and the top of the pressure differential pipe is slidably connected with two stamping clamps for clamping the pressure differential pipe; a movable plate slides on the bottom of the stamping table, and a connecting table is welded on one side of the movable plate. In the present invention, the pressure differential pipe is automatically transported for stamping and forming, and impurities attached to the outer wall of the pressure differential pipe are removed during the transportation process to avoid the impurities affecting the stamping of the pressure differential pipe, and after the stamping is completed, the pressure differential pipe can be fully inspected by moving up and down the ultrasonic probe and the color microscope magnification probe to avoid confusion between defective products and good products.

Description

Technical Field

[0001] The invention relates to the technical field of automobile pipeline accessories, and in particular to a pressure difference pipeline capable of quickly connecting a hose, and a preparation device and method thereof. Background Art

[0002] The differential pressure line in the exhaust system of a fuel vehicle is a sensor system used to monitor the pressure difference before and after a specific component in the exhaust system (such as the particulate filter DPF). This system usually consists of two main parts: a differential pressure sensor and a pipe connected to a specific location in the exhaust system.

[0003] The pressure difference pipeline in the prior art still has shortcomings in the production and preparation process:

[0004] During the preparation process, the joint of the pressure differential pipeline is stamped and formed by cold stamping, and then the pipeline is bent. However, during the stamping process, the staff often need to manually place the pipeline in the stamping equipment, which not only affects the processing efficiency, but also poses a safety hazard during the stamping process;

[0005] The pipe needs to be clamped during stamping. However, during the clamping process, due to the attachments on the outer wall of the pipe, it is easy to form pits or indentations on the outer wall of the pipe during stamping, which leads to inconsistent thickness of the pipe and affects the service life of the pipe.

[0006] After stamping, the pipeline cannot be inspected, resulting in the possibility of cracks in the pipeline after stamping. If such pipelines are installed in a car, they may easily cause safety hazards.

[0007] In view of the above problems, the present invention document proposes a pressure difference pipeline, a preparation device and a method for quickly connecting a hose. Summary of the invention

[0008] The purpose of the present invention is to solve the shortcomings of the existing system that workers need to manually place the pipeline in the stamping equipment, the presence of attachments on the outer wall of the pipeline affects the stamping and forming of the pipeline joint, and the pipeline cannot be inspected, and a pressure difference pipeline, preparation device and method for quickly connecting a hose are proposed.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] A pressure differential pipeline capable of quickly connecting to a rubber hose comprises a pressure differential pipe, wherein the pressure differential pipe is provided with a plurality of bends for improving the performance of the pressure differential pipe;

[0011] A sealing joint, which is arranged at one end of the pressure differential pipe and is used to connect the pressure differential pipe with the rubber hose;

[0012] A conical joint, which is arranged at the other end of the pressure differential tube and is used to connect the pressure differential tube with the ball-type interface;

[0013] A sliding fixing sheet, which is movably sleeved on the outer wall of the pressure differential tube and is used to fix the pressure differential tube;

[0014] A sealing structure is arranged on the outer wall of the differential pressure pipe and is used to ensure sealing when connected with the hose;

[0015] The connection structure is arranged on the outer wall of the pressure difference tube and is used to increase the stability of the connection with the ball-type interface.

[0016] In a possible design, the sealing structure includes a sealing rubber sleeve sleeved on the outer wall of the pressure differential tube, and the sealing joint is located in the sealing rubber sleeve, the sealing rubber sleeve is used to increase the sealing performance when the sealing joint is connected to the hose, the outer wall of the sealing rubber sleeve is sleeved with two clamping rings, both of which are threaded with screws, and the clamping rings are tightened by the screws, and the two clamping rings are respectively located on both sides of the sealing joint, and are used to fix the sealing rubber sleeve to the outer walls of the pressure differential tube and the hose, the outer wall of the pressure differential tube is integrally formed with an annular boss, and the annular boss is located away from the sealing ring On one side of the sealing head, the annular boss is used to limit the sealing rubber sleeve; when the sealing head is connected to the hose, the sealing head is butted against the hose, and then the sealing rubber sleeve is set at the connection position between the sealing head and the hose, and the sealing rubber sleeve can cover the connection position. At this time, one end of the sealing rubber sleeve just touches the annular boss, and the annular boss limits the sealing rubber sleeve. Then, the sealing rubber sleeve is fixedly connected by two clamping rings and two screws, and the two clamping rings are respectively set on the pressure differential tube and the hose, thereby ensuring the sealing of the connection between the sealing head and the hose.

[0017] In one possible design, the connection structure includes a hexagonal bolt slidably mounted on the outer wall of the pressure differential tube, a sealing gasket is provided at one end of the hexagonal bolt close to the conical joint, a conical concave surface is provided inside the sealing gasket, and the conical concave surface is adapted to the conical joint, so that the hexagonal bolt and the sealing gasket wrap the conical joint, and an arc surface adapted to the spherical interface is provided inside the conical joint; when the conical joint is connected to the spherical interface, the pressure differential tube is connected to the corresponding connecting sleeve of the spherical interface through the hexagonal bolt, and the sealing gasket inside the hexagonal bolt can increase the stability of the connection between the conical joint and the spherical interface.

[0018] A pressure differential pipeline preparation device, used for stamping and forming a tapered joint at one end of the pressure differential pipeline that can be quickly connected to a hose, comprising a stamping platform, a clearance groove is provided in the stamping platform, used to make way for the pressure differential pipe, and the top of the pressure differential pipe is slidably connected to two stamping clamps for clamping the pressure differential pipe;

[0019] A movable plate slides on the bottom of the punching table, a connecting table is welded on one side of the movable plate, and the connecting table is used to carry the differential pressure pipe to be punched;

[0020] A stamping structure, arranged on the top of the stamping table, is used to stamp the top of the pressure differential tube into a conical joint;

[0021] A cleaning structure is arranged on the top of the stamping table and is used to clean the outer wall of the pressure differential tube to be stamped;

[0022] The detection structure is arranged on the top of the stamping table and is used to detect the pressure difference tube after stamping, and the cleaning structure can run simultaneously with the detection structure.

[0023] In a possible design, the stamping structure includes a gantry welded to the top of the stamping table, the top of the gantry is fixedly penetrated by a hydraulic cylinder, the output shaft of the hydraulic cylinder is fixed with a stamping sphere, and the stamping sphere is used to stamp and form a conical joint at the top of the pressure differential tube, the bottom end of the stamping sphere is fixed with a plug rod, and the bottom end of the plug rod is inserted into the pressure differential tube to avoid deformation of the unstamped part of the pressure differential tube, and electric push rods are fixedly penetrated on both sides of the gantry, and the output shafts of the two electric push rods are respectively fixed to the two stamping clamps. The fixed connection is used to clamp and fix the pressure differential tube; two electric push rods drive two stamping clamps to clamp the pressure differential tube, and then the output shaft of the hydraulic cylinder pushes the stamping ball and the insertion rod to move downward, and the insertion rod is inserted into the top of the pressure differential tube to limit the inner wall of the pressure differential tube to avoid deformation of the inside of the pressure differential tube during the later stamping process. When the stamping ball moves downward, the top of the pressure differential tube is stamped, and the top of the pressure differential tube is deformed during stamping, and the deformed outer wall of the pressure differential tube fits the conical surface of the inner wall of the stamping clamp, so that a conical joint can be stamped at the top of the pressure differential tube.

[0024] In a possible design, the cleaning structure includes two fixed plates fixed on the top of the punching table, and the two fixed plates are located on both sides of the give way groove, and cotton layers are fixed on the sides of the two fixed plates close to each other, and the distance between the two cotton layers on the sides close to each other is less than the width of the give way groove, and the cooperation of the two cotton layers is used to remove impurities attached to the outer wall of the pressure difference tube, and the bottom of the punching table is rotatably connected to two screw rods through the base, one end of the two screw rods are threaded through the moving plate, and one end of the two screw rods are connected through a synchronous wheel and a synchronous belt transmission, the bottom of the punching table is fixed with a driving motor through a chassis, and the output shaft of the driving motor is fixedly connected to one end of one of the screw rods through a coupling, and the bottom of the punching table is fixed with a rack through a cross bar, and the rack is located Below the connecting platform, there is a rotating shaft that rotates inside the connecting platform, and the pressure differential tube is sleeved on the outer wall of the rotating shaft, the rotating shaft is used to drive the pressure differential tube to rotate, and a placement plate is fixed to the outer wall of the rotating shaft, and the bottom end of the pressure differential tube is in conflict with the top of the placement plate, and a gear is fixed to the bottom end of the rotating shaft, and the gear is meshed with the rack to drive the rotating shaft and the pressure differential tube to rotate; the driving motor drives the two screws to rotate at the same time through the synchronous wheel and the synchronous belt, the screw drives the moving plate, the connecting platform and the pressure differential tube to enter the give way groove, and the rack is meshed with the gear, and the gear drives the pressure differential tube to rotate through the rotating shaft, so the pressure differential tube rotates when it moves into the give way groove. At this time, the cotton layer can just clean the outer wall of the rotating pressure differential tube to prevent impurities attached to the outer wall of the pressure differential tube from affecting the subsequent stamping and forming of the connecting port.

[0025] In a possible design, the detection structure includes two mounting plates fixed on the top of the punching table, and the two mounting plates are respectively located on both sides of the clearance groove, and the two mounting plates are slidably connected to the lifting plate on the side close to each other, and two Z-shaped plates are slidably connected to one side of the punching table, and push plates are fixed on one side of the two Z-shaped plates, and the two push plates are respectively fixedly connected to the bottom of the two lifting plates for driving the lifting plates to move up and down. Two gearboxes are fixed at the bottom of the punching table, and the output shafts of the two gearboxes are fixed with cams, and a concave surface is provided on one side of the cam, and the cam and the concave surface are matched with the Z-shaped plate for controlling the lifting of the Z-shaped plate, and one end of the two screw rods is respectively fixedly connected to the input shafts of the two gearboxes, and a plurality of ultrasonic probes for detecting the pressure differential tube are fixed on one side of one of the lifting plates close to the clearance groove, and two base plates are fixed on one side of the other lifting plate, and a rotating shaft is rotatably connected between the two base plates, and the outer wall of the rotating shaft is fixedly sleeved with a mounting table, and a color microscopic magnification probe is fixed on one end of the mounting table, and the color microscopic magnification probe is used to detect the pressure differential tube. The outer wall of the rotating shaft is sleeved with two torsion springs, the ends of the two torsion springs close to each other are fixedly connected to the two sides of the mounting platform, and the ends of the two torsion springs away from each other are fixedly connected to the corresponding base plates. A limit plate is fixed on one side of the mounting plate corresponding to the mounting platform, and the limit plate is used to drive the mounting platform to rotate; the screw rod transports the moving plate and the pressure difference tube to the outside, and the pressure difference tube still rotates during transportation, and the screw rod drives the two lifting plates to move up and down reciprocatingly through the cooperation of the cam, the concave surface and the Z-shaped plate. The ultrasonic probe and the color microscope magnification probe can measure the pressure difference after stamping. The end of the pipe joint is carefully inspected. When the Z-plate drives the mounting platform to rise above the pressure differential tube, the end of the mounting platform close to the color microscopic magnification probe is blocked by the limit plate and rotates clockwise. The color microscopic magnification probe rotates downward at a certain angle. The color microscopic magnification probe can take pictures of the inner wall of the tapered joint. The color microscopic magnification probe and the ultrasonic probe can comprehensively inspect the stamping part of the pressure differential tube, and the color microscopic magnification probe and the ultrasonic probe transmit the detection data to the comprehensive crack detector for the convenience of staff to check and avoid confusion between defective products and good products.

[0026] In a possible design, the outer wall of the rotating shaft is provided with a rubber layer for increasing the friction between the rotating shaft and the pressure differential tube, a plurality of diagonal braces are welded on one side of the movable plate, the top ends of the two diagonal braces are welded to the bottom of the connecting platform for supporting the connecting platform, the inner walls of the two stamping clamps are provided with conical surfaces, and the two conical surfaces are used together to stamp and form a conical joint at the top end of the pressure differential tube.

[0027] In a possible design, multiple fixing rods are welded to one side of the movable plate, and the same arc-shaped magnet is fixed to one end of the multiple fixing rods. A magnetic attraction force is generated between the arc-shaped magnet and the pressure differential tube, and the inner concave surface of the arc-shaped magnet cooperates with the pressure differential tube. The arc-shaped magnet is used to improve the stability of the pressure differential tube.

[0028] The method for using the pressure differential pipeline preparation device comprises the following steps:

[0029] S1. Install the differential pressure tube: Put the differential pressure tube on the rotating shaft with the rubber layer to ensure that the bottom is in contact with the placement plate; use the rubber layer to increase the friction, and fix the differential pressure tube through the magnetic attraction of the arc magnet to ensure stability;

[0030] S2, cleaning and self-rotation: The driving motor synchronously drives the screw to move, driving the pressure differential tube into the clearance groove; at the same time, the gear makes the pressure differential tube self-rotate through the rotating shaft, and the cotton layer cleans its outer wall to prepare for subsequent stamping and forming;

[0031] S3, stamping forming: the electric push rod drives the stamping clamp to clamp the pressure differential tube, and the hydraulic cylinder pushes the stamping ball and the insertion rod downward; the insertion rod fixes the inner wall of the pressure differential tube to prevent deformation; the stamping ball stamps the top to form a tapered joint;

[0032] S4. Inspection and classification: The screw rod continues to transport the differential pressure tube and makes it rotate; the lifting plate is driven up and down by the cooperation of the cam and the Z-type plate, and the ultrasonic probe and the color microscope magnification probe perform detailed inspections on the conical joints; when the mounting platform rises, the color microscope magnification probe automatically adjusts the angle to photograph the inner wall of the joint; all data are transmitted to the comprehensive crack detector to facilitate the distinction between good and defective products.

[0033] Beneficial effects:

[0034] In the present invention, the bottom of the punching table is rotatably connected to two screw rods threadedly connected to the moving plate, a rotating shaft is rotatably passed through the connecting table, a gear is fixed to the bottom end of the rotating shaft, and the gear is meshed with the rack; the screw rod drives the moving plate and the pressure differential tube to enter the give way groove, and the rack is meshed with the gear and drives the pressure differential tube to rotate through the rotating shaft, the cotton layer can just clean the outer wall of the rotating pressure differential tube to prevent impurities attached to the outer wall of the pressure differential tube from affecting the subsequent stamping and forming of the connecting port, and can automatically move the pressure differential tube to the bottom of the punching sphere to avoid production accidents during the punching process;

[0035] In the present invention, the two mounting plates are slidably connected to a lifting plate on one side close to each other, two Z-shaped plates are slidably connected to one side of the stamping table, two gearboxes are fixed to the bottom of the stamping table, and the output shafts of the two gearboxes are fixed with cams. The two lifting plates are respectively provided with a color microscope magnification probe and a plurality of ultrasonic probes on the side close to each other; the screw rod drives the two lifting plates to move up and down reciprocatingly through the cooperation of the cam, the concave surface and the Z-shaped plate, and the ultrasonic probe and the color microscope magnification probe can carefully detect the end of the pressure difference pipe joint after stamping, which is convenient for the staff to check and avoid confusion between defective products and good products;

[0036] In the present invention, two base plates are fixed on one side of the lifting plate, and the two base plates are rotated with a mounting platform through a rotating shaft, a color microscopic magnification probe is fixed to one end of the mounting platform, and the outer wall of the rotating shaft is sleeved with two torsion springs for resetting and rotating the mounting platform, and a limiting plate is fixed to one side of the mounting plate; when the Z-shaped plate drives the mounting platform to rise above the pressure differential tube, one end of the mounting platform close to the color microscopic magnification probe is blocked by the limiting plate and rotates downward by a certain angle, and the color microscopic magnification probe can photograph the inner wall of the conical joint, and then can comprehensively detect the stamping part of the pressure differential tube to avoid confusion between defective products and good products.

[0037] In the present invention, the pressure differential tube can be automatically transported to the give way groove for stamping and forming, and impurities attached to the outer wall of the pressure differential tube can be removed during the transportation process to prevent the impurities from affecting the stamping of the pressure differential tube. After the stamping is completed, the pressure differential tube can be comprehensively inspected by moving the ultrasonic probe and the color microscope magnification probe up and down to avoid confusion between defective products and good products. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic diagram of the three-dimensional structure of a pressure differential pipeline capable of quickly connecting a hose provided in Example 1 of the present invention;

[0039] Figure 2 A schematic three-dimensional cross-sectional structure diagram of a pressure differential pipe and a sealing rubber sleeve of a pressure differential pipeline capable of being quickly connected to a hose provided in Example 1 of the present invention;

[0040] Figure 3 A schematic three-dimensional cross-sectional structure diagram of a tapered joint for a pressure differential pipeline that can be quickly connected to a hose provided in Example 1 of the present invention;

[0041] Figure 4 A schematic diagram of a three-dimensional exploded cross-sectional structure of a hexagonal bolt and a sealing gasket for a pressure differential pipeline that can be quickly connected to a hose provided in Example 1 of the present invention;

[0042] Figure 5 A schematic diagram of the three-dimensional structure of the pressure difference pipeline preparation device provided in Example 1 of the present invention;

[0043] Figure 6 A schematic diagram of a three-dimensional exploded structure of a pressure differential pipeline preparation device provided in Example 1 of the present invention;

[0044] Figure 7 A schematic diagram of a three-dimensional cross-sectional structure of a pressure differential pipeline preparation device provided in Example 1 of the present invention;

[0045] Figure 8 A schematic diagram of a three-dimensional structure of a moving plate, a driving motor and a lead screw of the pressure differential pipeline preparation device provided in Example 1 of the present invention;

[0046] Fig. 9 A schematic diagram of a three-dimensional cross-sectional structure of a connecting platform and a placement plate of a pressure differential pipeline preparation device provided in Example 1 of the present invention;

[0047] Fig.10 A schematic diagram of a three-dimensional exploded structure of a mounting plate, a lifting plate and a Z-shaped plate of the pressure differential pipeline preparation device provided in Example 1 of the present invention;

[0048] Fig.11 This is a schematic diagram of the three-dimensional structure of the moving plate, arc magnet and connecting platform of the pressure difference pipeline preparation device provided in Example 2 of the present invention.

[0049] In the figure: 1, differential pressure pipe; 2, sealing joint; 3, annular boss; 4, sealing rubber sleeve; 5, snap ring; 6, screw; 7, sliding fixing plate; 8, conical joint; 9, arc surface; 10, hexagonal bolt; 11, sealing gasket; 12, concave ... 24. Connecting table; 25. Diagonal support; 26. Rotating shaft; 27. Placing plate; 28. Gear; 29. ​​Rack; 30. Mounting plate; 31. Lifting plate; 32. Ultrasonic probe; 33. Base plate; 34. Rotating shaft; 35. Mounting table; 36. Torsion spring; 37. Limiting plate; 38. Z-type plate; 39. Push plate; 40. Cam; 41. Gearbox; 42. Concave surface; 43. Fixed plate; 44. Cotton layer; 45. Fixed rod; 46. Arc magnet; 47. Color microscope magnification probe. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0051] Example 1

[0052] Reference Figure 1-Figure 4 A pipeline is used in the field of automobile pipeline accessories, including a pressure differential tube 1, which is provided with multiple bends for improving the performance of the pressure differential tube 1; a sealing joint 2, which is arranged at one end of the pressure differential tube 1 and is used to connect the pressure differential tube 1 with a hose; a conical joint 8, which is arranged at the other end of the pressure differential tube 1 and is used to connect the pressure differential tube 1 with a ball-type interface; a sliding fixed sheet 7, which is movably sleeved on the outer wall of the pressure differential tube 1 and is used to fix the pressure differential tube 1.

[0053] Reference Figure 1 and Figure 2 The pipeline includes a sealing structure arranged on the outer wall of the pressure differential tube 1, which is used to ensure the sealing when connected with the hose; the sealing structure includes a sealing rubber sleeve 4 sleeved on the outer wall of the pressure differential tube 1, and the sealing joint 2 is located in the sealing rubber sleeve 4, and the sealing rubber sleeve 4 is used to increase the sealing when the sealing joint 2 is connected to the hose. The outer wall of the sealing rubber sleeve 4 is sleeved with two clamping rings 5, and the two clamping rings 5 ​​are threadedly connected with screws 6. The clamping rings 5 ​​are fastened by the screws 6, and the two clamping rings 5 ​​are respectively located on both sides of the sealing joint 2, which are used to fix the sealing rubber sleeve 4 on the outer walls of the pressure differential tube 1 and the hose. The outer wall of the pressure differential tube 1 is integrally formed with an annular boss 3, and the annular boss The platform 3 is located on the side of the clamping ring 5 away from the sealing joint 2, and the annular boss 3 is used to limit the sealing rubber sleeve 4; when the sealing joint 2 is connected to the hose, the sealing joint 2 is docked with the hose, and then the sealing rubber sleeve 4 is sleeved on the connection position between the sealing joint 2 and the hose, and the sealing rubber sleeve 4 can cover the connection position. At this time, one end of the sealing rubber sleeve 4 just touches the annular boss 3, and the annular boss 3 limits the sealing rubber sleeve 4. Then, the sealing rubber sleeve 4 is fixedly connected by two clamping rings 5 ​​and two screws 6, and the two clamping rings 5 ​​are respectively sleeved on the pressure difference tube 1 and the hose, thereby ensuring the sealing of the connection between the sealing joint 2 and the hose.

[0054] Reference Figure 1 , Figure 3 and Figure 4 The pipeline includes a connecting structure arranged on the outer wall of the pressure differential tube 1, which is used to increase the stability of the connection with the spherical interface; the connecting structure includes a hexagonal bolt 10 slidably sleeved on the outer wall of the pressure differential tube 1, and a sealing gasket 11 is provided at one end of the hexagonal bolt 10 close to the conical joint 8, and a conical concave surface 12 is provided in the sealing gasket 11, and the conical concave surface 12 is adapted to the conical joint 8, which is used to wrap the conical joint 8 with the hexagonal bolt 10 and the sealing gasket 11, and the conical joint 8 is provided with an arc surface 9 adapted to the spherical interface; when the conical joint 8 is connected to the spherical interface, the pressure differential tube 1 is connected to the corresponding connecting sleeve of the spherical interface through the hexagonal bolt 10, and the sealing gasket 11 in the hexagonal bolt 10 can increase the stability of the connection between the conical joint 8 and the spherical interface.

[0055] Working principle of a pressure differential line with quick-connect hose:

[0056] S1. The pressure differential tube 1 can be connected to the corresponding parts of the automobile at any position through the sliding fixing sheet 7, and the connection flexibility is high. When the sealing joint 2 is connected to the hose, the sealing joint 2 is butted with the hose, and then the sealing rubber sleeve 4 is sleeved on the connection position of the sealing joint 2 and the hose, and the sealing rubber sleeve 4 can cover the connection position. At this time, one end of the sealing rubber sleeve 4 just contacts the annular boss 3, and the annular boss 3 limits the sealing rubber sleeve 4. Then, the sealing rubber sleeve 4 is fixedly connected by two clamping rings 5 ​​and two screws 6, and the two clamping rings 5 ​​are respectively sleeved on the pressure differential tube 1 and the hose, thereby ensuring the sealing of the connection between the sealing joint 2 and the hose;

[0057] S2. When the conical joint 8 is connected to the spherical interface, the pressure differential tube 1 is connected to the corresponding connecting sleeve of the spherical interface through the hexagonal bolt 10, and the sealing gasket 11 in the hexagonal bolt 10 can increase the stability of the connection between the conical joint 8 and the spherical interface;

[0058] S3. In addition, the differential pressure tube 1 is provided with a plurality of bends, and the functions of the plurality of bends are:

[0059] ① Space layout: The space of the car chassis is limited, and the exhaust system needs to find a suitable layout between many components such as the engine, transmission system, fuel system, etc. The bent pipe can better adapt to these space limitations and achieve a compact layout.

[0060] ② Thermal expansion compensation: The exhaust pipe will produce thermal expansion during operation. The bent design can serve as a natural compensation mechanism to reduce the impact of thermal expansion on the pipe connection points and avoid leakage or damage caused by thermal expansion and contraction.

[0061] ③ Reduce noise: The bends in the exhaust system can serve as part of the muffler, helping to reduce exhaust noise by changing the direction and speed of the airflow.

[0062] ④Prevent condensed water from flowing back: During the exhaust process, high-temperature exhaust gas will condense into water. The bent design helps prevent condensed water from flowing back into the engine or other sensitive parts, which may cause corrosion or performance problems.

[0063] ⑤ Pressure balance: The bends in the exhaust system help balance the pressure of each part, ensuring smooth discharge of gas while reducing the impact of back pressure on engine performance.

[0064] ⑥ Installation flexibility: The curved pipe provides more installation flexibility, allowing the exhaust system to be flexibly applied to different car models and designs.

[0065] ⑦ Prevent blockage: Especially in systems equipped with a particulate filter (DPF), the curved design can prevent particulate matter from accumulating in the pipeline and keep the pipeline unobstructed.

[0066] ⑧ Protection and durability: The bent pipe can better protect the sensor line and avoid direct exposure to high temperature or mechanical damage, thereby improving the durability of the entire system.

[0067] Reference Figure 5-Figure 10 A preparation device is used in the field of automobile pressure differential pipelines, and is used for stamping and forming the above-mentioned tapered joint 8 at one end of the pressure differential pipeline that can be quickly connected to the hose, including a stamping table 13, a clearance groove 14 is provided in the stamping table 13, which is used to make way for the pressure differential tube 1, and the top of the pressure differential tube 1 is slidably connected to two stamping clamps 17 for clamping the pressure differential tube 1; a moving plate 23, which slides on the bottom of the stamping table 13, and a connecting table 24 is welded on one side of the moving plate 23, and the connecting table 24 is used to carry the pressure differential tube 1 to be stamped.

[0068] Reference Figure 5-Figure 7 The device includes a stamping structure arranged on the top of a stamping platform 13, which is used to stamp the top of the pressure differential tube 1 into a conical joint 8; the stamping structure includes a gantry 15 welded to the top of the stamping platform 13, a hydraulic cylinder 18 is fixedly penetrated on the top of the gantry 15, a stamping sphere 19 is fixed on the output shaft of the hydraulic cylinder 18, and the stamping sphere 19 is used to stamp and form a conical joint 8 at the top of the pressure differential tube 1, a plug rod 20 is fixed on the bottom end of the stamping sphere 19, and the bottom end of the plug rod 20 is inserted into the pressure differential tube 1 to prevent the unstamped part of the pressure differential tube 1 from being deformed, and electric push rods 16 are fixedly penetrated on both sides of the gantry 15, and the output shafts of the two electric push rods 16 are fixedly penetrated. The shaft is fixedly connected to the two stamping clamps 17 respectively, which are used to clamp and fix the pressure differential tube 1; the two stamping clamps 17 are driven by two electric push rods 16 to clamp the pressure differential tube 1, and then the output shaft of the hydraulic cylinder 18 pushes the stamping ball 19 and the insertion rod 20 to move downward, and the insertion rod 20 is inserted into the top of the pressure differential tube 1 to limit the inner wall of the pressure differential tube 1 to avoid deformation of the inside of the pressure differential tube 1 during the later stamping process. When the stamping ball 19 moves downward, the top of the pressure differential tube 1 is stamped, and the top of the pressure differential tube 1 is deformed during stamping, and the deformed outer wall of the pressure differential tube 1 fits the conical surface of the inner wall of the stamping clamp 17, so that a conical joint 8 can be stamped at the top of the pressure differential tube 1.

[0069] Reference Figure 6-Figure 9The device includes a cleaning structure arranged on the top of the punching table 13, which is used to clean the outer wall of the pressure differential tube 1 to be punched; the cleaning structure includes two fixed plates 43 fixed on the top of the punching table 13, and the two fixed plates 43 are located on both sides of the give way groove 14, and the two fixed plates 43 are fixed with cotton layers 44 on the sides close to each other, and the distance between the two cotton layers 44 on the sides close to each other is less than the width of the give way groove 14, and the cooperation of the two cotton layers 44 is used to remove impurities attached to the outer wall of the pressure differential tube 1, and the bottom of the punching table 13 is rotatably connected to two screw rods 21 through the base, one end of the two screw rods 21 is threaded through the moving plate 23, and one end of the two screw rods 21 is connected through a synchronous wheel and a synchronous belt transmission, and the bottom of the punching table 13 is fixed with a driving motor 22 through a chassis, and the output shaft of the driving motor 22 is fixedly connected to one end of one of the screw rods 21 through a coupling, and the bottom of the punching table 13 is fixed with a rack 29 through a cross bar, and the rack 29 is located below the connecting platform 24, and a rotating shaft 26 is rotatably penetrated in the connecting platform 24, and the pressure differential tube 1 is sleeved on the outer wall of the rotating shaft 26, and the rotating shaft 26 is used to drive the pressure differential tube 1 to rotate. A placement plate 27 is fixed to the outer wall of the rotating shaft 26, and the bottom end of the pressure differential tube 1 is in conflict with the top of the placement plate 27. A gear 28 is fixed to the bottom end of the rotating shaft 26, and the gear 28 is meshed with the rack 29, which is used to drive the rotating shaft 26 and the pressure differential tube 1 to rotate. The driving motor 22 is driven by the synchronous wheel and the synchronous The step belt drives the two screw rods 21 to rotate at the same time, and the screw rod 21 drives the moving plate 23, the connecting platform 24 and the pressure differential tube 1 to enter the clearance groove 14, and the rack 29 is meshed with the gear 28, and the gear 28 drives the pressure differential tube 1 to rotate through the rotating shaft 26. Therefore, the pressure differential tube 1 rotates when it moves into the clearance groove 14. At this time, the cotton layer 44 can just clean the outer wall of the rotating pressure differential tube 1 to prevent impurities attached to the outer wall of the pressure differential tube 1 from affecting the subsequent stamping and forming of the connecting port.

[0070] Reference Figure 7 , Figure 8 and Fig.10The device includes a detection structure arranged on the top of the stamping table 13, which is used to detect the pressure difference tube 1 after stamping, and the cleaning structure can run simultaneously with the detection structure; the detection structure includes two mounting plates 30 fixed on the top of the stamping table 13, and the two mounting plates 30 are respectively located on both sides of the give way groove 14, and the two mounting plates 30 are slidably connected to the lifting plate 31 on the side close to each other, and two Z-shaped plates 38 are slidably connected to one side of the stamping table 13, and push plates 39 are fixed on one side of the two Z-shaped plates 38. The two push plates 39 are respectively fixedly connected to the bottom of the two lifting plates 31 for driving the lifting plates 31 to move up and down. Two gearboxes 41 are fixed on the bottom of the stamping table 13. The output shafts of the gearboxes 41 are fixed with cams 40, one side of the cams 40 is provided with a recessed surface 42, and the cams 40 and the recessed surface 42 are matched with the Z-type plate 38 to control the lifting and lowering of the Z-type plate 38. One end of the two screw rods 21 is fixedly connected to the input shafts of the two gearboxes 41 respectively. One side of one lifting plate 31 close to the give way groove 14 is fixed with a plurality of ultrasonic probes 32 for detecting the pressure difference tube 1, and one side of the other lifting plate 31 is fixed with two base plates 33, and a rotating shaft 34 is rotatably connected between the two base plates 33. The outer wall of the rotating shaft 34 is fixedly sleeved with a mounting platform 35, and one end of the mounting platform 35 is fixed with a color microscope magnification probe 47. The color microscope magnification probe The head 47 is used to detect the differential pressure tube 1. The outer wall of the rotating shaft 34 is sleeved with two torsion springs 36. The ends of the two torsion springs 36 that are close to each other are fixedly connected to the two sides of the mounting platform 35, and the ends of the two torsion springs 36 that are far away from each other are fixedly connected to the corresponding base plates 33. A limit plate 37 is fixed on one side of the mounting plate 30 corresponding to the mounting platform 35, and the limit plate 37 is used to drive the mounting platform 35 to rotate; the screw rod 21 transports the moving plate 23 and the differential pressure tube 1 to the outside. During the transportation, the differential pressure tube 1 still rotates, and the screw rod 21 drives the two lifting plates 31 to move up and down through the cooperation of the cam 40, the concave surface 42, and the Z-shaped plate 38. The ultrasonic probe 32 and the color microscope magnification probe 4 7 can carefully inspect the joint end of the differential pressure tube 1 after stamping. When the Z-shaped plate 38 drives the mounting platform 35 to rise above the differential pressure tube 1, the end of the mounting platform 35 close to the color microscope magnification probe 47 is blocked by the limit plate 37 and rotates clockwise. The color microscope magnification probe 47 rotates downward at a certain angle. The color microscope magnification probe 47 can take pictures of the inner wall of the conical joint 8. The stamping part of the differential pressure tube 1 can be fully inspected by the color microscope magnification probe 47 and the ultrasonic probe 32. The color microscope magnification probe 47 and the ultrasonic probe 32 transmit the detected data to the comprehensive crack detector, which is convenient for the staff to check and avoid confusion between defective products and good products.

[0071] Reference Figure 7-Figure 9The outer wall of the rotating shaft 26 is provided with a rubber layer for increasing the friction between the rotating shaft 26 and the pressure differential tube 1. A plurality of diagonal braces 25 are welded on one side of the movable plate 23. The top ends of the two diagonal braces 25 are welded to the bottom of the connecting platform 24 for supporting the connecting platform 24. The inner walls of the two stamping clamps 17 are provided with conical surfaces, and the two conical surfaces cooperate to stamp and form a conical joint 8 at the top end of the pressure differential tube 1.

[0072] Example 2

[0073] refer to Fig.11 , an improvement based on Example 1: a plurality of fixing rods 45 are welded to one side of the movable plate 23, a same arc-shaped magnet 46 is fixed to one end of the plurality of fixing rods 45, and a magnetic attraction force is generated between the arc-shaped magnet 46 and the pressure differential tube 1, and the inner concave surface of the arc-shaped magnet 46 cooperates with the pressure differential tube 1, and the arc-shaped magnet 46 is used to improve the stability of the pressure differential tube 1.

[0074] The method for using the pressure differential pipeline preparation device comprises the following steps:

[0075] S1. The unbent differential pressure tube 1 is sleeved on the outer wall of the rotating shaft 26, and the bottom end of the differential pressure tube 1 is in contact with the top of the placement plate 27. Since the outer surface of the rotating shaft 26 is sleeved with a rubber layer, the rotating shaft 26 can increase the friction between the rotating shaft 26 and the differential pressure tube 1 through the rubber layer, which is used to drive the differential pressure tube 1 to rotate. When the differential pressure tube 1 is placed, the concave surface of the arc magnet 46 just fits the outer wall of the differential pressure tube 1, and the magnetic attraction between the arc magnet 46 and the differential pressure tube 1 is used to improve the stability of the differential pressure tube 1.

[0076] S2, the driving motor 22 drives the two screws 21 to rotate simultaneously through the synchronous wheel and the synchronous belt, and the screw 21 drives the moving plate 23, the connecting platform 24 and the pressure difference tube 1 to enter the clearance groove 14, and the rack 29 is meshed with the gear 28, and the gear 28 drives the pressure difference tube 1 to rotate through the rotating shaft 26. Therefore, the pressure difference tube 1 rotates when it moves into the clearance groove 14. At this time, the cotton layer 44 can just clean the outer wall of the rotating pressure difference tube 1 to prevent the impurities attached to the outer wall of the pressure difference tube 1 from affecting the subsequent stamping and forming of the connection port;

[0077] S3. After the pressure differential tube 1 enters the electric push rod 16, the two electric push rods 16 drive the two stamping clamps 17 to clamp the pressure differential tube 1, and then the output shaft of the hydraulic cylinder 18 pushes the stamping ball 19 and the insertion rod 20 to move downward, and the insertion rod 20 is inserted into the top of the pressure differential tube 1 to limit the inner wall of the pressure differential tube 1 to avoid deformation of the inside of the pressure differential tube 1 during the later stamping process. When the stamping ball 19 moves downward, the top of the pressure differential tube 1 is stamped, and the top of the pressure differential tube 1 is deformed during stamping, and the deformed outer wall of the pressure differential tube 1 fits the conical surface of the inner wall of the stamping clamp 17, so that a conical joint 8 can be stamped at the top of the pressure differential tube 1;

[0078] S4. After the stamping is completed, the screw 21 transports the movable plate 23 and the pressure differential tube 1 to the outside. During the transportation, the pressure differential tube 1 still rotates, and the screw 21 drives the two lifting plates 31 to move back and forth up and down through the cooperation of the cam 40, the recessed surface 42, and the Z-type plate 38. The ultrasonic probe 32 and the color microscopic magnification probe 47 can carefully detect the end of the joint of the pressure differential tube 1 after stamping. When the Z-type plate 38 drives the mounting platform 35 to rise above the pressure differential tube 1, the end of the mounting platform 35 close to the color microscopic magnification probe 47 is blocked by the limit plate 37 and rotates clockwise. The color microscopic magnification probe 47 rotates downward at a certain angle, and the color microscopic magnification probe 47 can shoot the inner wall of the conical joint 8. The color microscopic magnification probe 47 and the ultrasonic probe 32 can comprehensively detect the stamping part of the pressure differential tube 1, and the color microscopic magnification probe 47 and the ultrasonic probe 32 transmit the detected data to the comprehensive crack detector, which is convenient for the staff to check and avoid confusion between defective products and good products.

[0079] However, as is well known to those skilled in the art, the working principles and wiring methods of the ultrasonic probe 32, the color microscopic magnification probe 47, the drive motor 22, the electric push rod 16 and the hydraulic cylinder 18 are commonplace, and are all conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any optional selections according to their needs or convenience.

[0080] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pressure differential pipeline preparation device, characterized in that: A conical joint (8) for stamping and forming a pressure differential pipe at one end thereof which can be quickly connected to a rubber hose, characterized in that it comprises a stamping platform (13), wherein a clearance groove (14) is provided in the stamping platform (13) for making way for the pressure differential pipe (1), and the top of the pressure differential pipe (1) is slidably connected to two stamping clamps (17) for clamping the pressure differential pipe (1); A movable plate (23) which slides on the bottom of the punching table (13); a connecting table (24) is welded to one side of the movable plate (23); and the connecting table (24) is used to carry the differential pressure tube (1) to be punched; A stamping structure, arranged on the top of the stamping platform (13), used for stamping the top of the pressure differential tube (1) into a conical joint (8); A cleaning structure, arranged on the top of the stamping table (13), and used for cleaning the outer wall of the pressure differential tube (1) to be stamped; A detection structure is arranged on the top of the stamping table (13) and is used to detect the pressure differential tube (1) after stamping, and the cleaning structure can operate simultaneously with the detection structure; The stamping structure comprises a gantry (15) welded to the top of the stamping table (13); a hydraulic cylinder (18) is fixedly passed through the top of the gantry (15); a stamping sphere (19) is fixedly passed through the output shaft of the hydraulic cylinder (18); and the stamping sphere (19) is used to stamp and form a conical joint (8) at the top of the pressure differential tube (1); a plug rod (20) is fixedly passed through the bottom end of the stamping sphere (19); and the bottom end of the plug rod (20) is inserted into the pressure differential tube (1) to prevent deformation of the unstamped part of the pressure differential tube (1); electric push rods (16) are fixedly passed through both sides of the gantry (15); and the output shafts of the two electric push rods (16) are respectively fixedly connected to two stamping clamps (17) to clamp and fix the pressure differential tube (1); The cleaning structure comprises two fixed plates (43) fixed on the top of the punching table (13), and the two fixed plates (43) are located on both sides of the clearance groove (14). Cotton layers (44) are fixed on the sides of the two fixed plates (43) close to each other, and the distance between the sides of the two cotton layers (44) close to each other is less than the width of the clearance groove (14). The two cotton layers (44) cooperate to remove impurities attached to the outer wall of the pressure difference tube (1). The bottom of the punching table (13) is rotatably connected to two screw rods (21) through a base. One end of the two screw rods (21) is threaded through the movable plate (23), and one end of the two screw rods (21) is connected through a synchronous wheel and a synchronous belt transmission. The bottom of the punching table (13) is fixed with a driving motor (21) through a chassis. 2), and the output shaft of the driving motor (22) is fixedly connected to one end of one of the screw rods (21) through a coupling, a rack (29) is fixed to the bottom of the punching table (13) through a cross bar, and the rack (29) is located below the connecting table (24), a rotating shaft (26) is rotatably penetrated in the connecting table (24), and the pressure differential tube (1) is sleeved on the outer wall of the rotating shaft (26), the rotating shaft (26) is used to drive the pressure differential tube (1) to rotate, a placement plate (27) is fixed to the outer wall of the rotating shaft (26), and the bottom end of the pressure differential tube (1) is in contact with the top of the placement plate (27), and a gear (28) is fixed to the bottom end of the rotating shaft (26), and the gear (28) is meshed with the rack (29) to drive the rotating shaft (26) and the pressure differential tube (1) to rotate; The detection structure comprises two mounting plates (30) fixed on the top of the punching platform (13), and the two mounting plates (30) are respectively located on both sides of the clearance groove (14), and the sides of the two mounting plates (30) close to each other are slidably connected to the lifting plate (31), and one side of the punching platform (13) is slidably connected to two Z-shaped plates (38), and one side of the two Z-shaped plates (38) is fixed with a push plate (39), and the two push plates (39) are respectively fixed to the bottom of the two lifting plates (31). The punching table (13) is connected to the bottom of the punching table (13) for driving the lifting plate (31) to move up and down. Two gearboxes (41) are fixed to the bottom of the punching table (13). The output shafts of the two gearboxes (41) are fixed with cams (40). One side of the cam (40) is provided with a concave surface (42). The cam (40) and the concave surface (42) are matched with the Z-shaped plate (38) for controlling the lifting of the Z-shaped plate (38). One end of the two screw rods (21) is fixedly connected to the input shafts of the two gearboxes (41). A plurality of ultrasonic probes (32) for detecting the differential pressure tube (1) are fixed on one side of one of the lifting plates (31) close to the yielding groove (14); two base plates (33) are fixed on one side of the other lifting plate (31); a rotating shaft (34) is rotatably connected between the two base plates (33); a mounting platform (35) is fixedly sleeved on the outer wall of the rotating shaft (34); a color microscopic magnifying probe (47) is fixedly sleeved on one end of the mounting platform (35); the color microscopic magnifying probe (47) is used to detect the differential pressure tube (1); two torsion springs (36) are sleeved on the outer wall of the rotating shaft (34); the ends of the two torsion springs (36) that are close to each other are respectively fixedly connected to the two sides of the mounting platform (35); the ends of the two torsion springs (36) that are away from each other are respectively fixedly connected to the corresponding base plates (33); a limiting plate (37) is fixedly mounted on one side of the mounting plate (30) corresponding to the mounting platform (35); and the limiting plate (37) is used to drive the mounting platform (35) to rotate.

2. The pressure differential pipeline preparation device according to claim 1, characterized in that: The outer wall of the rotating shaft (26) is provided with a rubber layer for increasing the friction between the rotating shaft (26) and the pressure differential tube (1); a plurality of diagonal braces (25) are welded to one side of the movable plate (23); the top ends of the two diagonal braces (25) are welded to the bottom of the connecting platform (24) for supporting the connecting platform (24); the inner walls of the two stamping clamps (17) are provided with conical surfaces, and the two conical surfaces cooperate to stamp and form a conical joint (8) at the top end of the pressure differential tube (1).

3. The pressure differential pipeline preparation device according to claim 2, characterized in that: A plurality of fixing rods (45) are welded to one side of the movable plate (23); a same arc-shaped magnet (46) is fixed to one end of the plurality of fixing rods (45); a magnetic attraction force is generated between the arc-shaped magnet (46) and the pressure differential tube (1); and an inner concave surface of the arc-shaped magnet (46) cooperates with the pressure differential tube (1); the arc-shaped magnet (46) is used to improve the stability of the pressure differential tube (1).

4. The method for using the pressure differential pipeline preparation device according to claim 3, characterized in that: The following steps are involved: S1. Install the differential pressure tube: sleeve the differential pressure tube (1) on the rotating shaft (26) with the rubber layer, and ensure that the bottom is in contact with the placement plate (27); use the rubber layer to increase friction, and fix the differential pressure tube (1) through the magnetic attraction of the arc magnet (46) to ensure stability; S2, cleaning and self-rotation: the driving motor (22) synchronously drives the screw (21) to move, driving the pressure differential tube (1) to enter the clearance groove (14); at the same time, the gear (28) causes the pressure differential tube (1) to self-rotate through the rotating shaft (26), and the cotton layer (44) cleans its outer wall, preparing for subsequent stamping and forming; S3, stamping and forming: the electric push rod (16) drives the stamping clamp (17) to clamp the pressure differential tube (1), and the hydraulic cylinder (18) pushes the stamping ball (19) and the insertion rod (20) to move downward; the insertion rod (20) fixes the inner wall of the pressure differential tube (1) to prevent deformation; the stamping ball (19) stamps the top to form a conical joint (8); S4, inspection and classification: the screw rod (21) continues to convey the differential pressure tube (1) and makes it rotate; the lifting plate (31) is driven to move up and down by the cooperation of the cam (40) and the Z-type plate (38), and the ultrasonic probe (32) and the color microscope magnification probe (47) perform detailed inspection on the conical joint (8); when the mounting platform (35) rises, the color microscope magnification probe (47) automatically adjusts the angle to photograph the inner wall of the joint, so as to facilitate the distinction between good products and bad products.

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