A kind of automobile sealing parts sealing detection equipment

Abstract

The present invention relates to a sealing detection device for automobile sealing components, comprising a mounting plate, a pressurized tank fixedly arranged on the mounting plate, a sealing sleeve connected to the pressurized tank and fixedly installed thereon, a first piston cylinder with one end movably arranged in the sealing sleeve, a piston device arranged on the first piston cylinder, a bracket fixedly arranged at the upper end of the pressurized tank, an auxiliary device arranged on the bracket and used for guiding the other end of the piston, a driving device arranged on the bracket and used for driving the piston to reciprocate, a lifting plate fixedly sleeved at the upper end of the first piston cylinder, and two hydraulic cylinders with two ends respectively fixed on the lifting plate and the pressurized tank. The sealing components of the present invention are easy to take during the testing process and can simulate the sealing performance of the sealing components during actual use.

Description

Technical Field

[0001] The invention relates to the technical field of detection, and in particular to a sealing detection device for automobile sealing parts. Background Art

[0002] As we all know, the automobile engine is a device that provides power for the car. It is the heart of the car and determines the power, economy, stability and environmental protection of the car. Common gasoline engines and diesel engines are reciprocating piston internal combustion engines, which convert the chemical energy of the fuel into the mechanical energy of the piston movement and output power to the outside. The engine is composed of two major mechanisms, the crank-connecting rod mechanism and the valve mechanism, as well as five major systems such as cooling, lubrication, ignition, fuel supply, and starting system. The main components are cylinder block, cylinder head, piston, piston pin, connecting rod, crankshaft, flywheel, etc. The working chamber of the reciprocating piston internal combustion engine is called the cylinder, and the inner surface of the cylinder is cylindrical. The piston that reciprocates in the cylinder is hinged to one end of the connecting rod through the piston pin, and the other end of the connecting rod is connected to the crankshaft. The crankshaft is supported by the bearing on the cylinder block and can rotate in the bearing, forming a crank-connecting rod mechanism. When the piston reciprocates in the cylinder, the connecting rod drives the crankshaft to rotate. On the contrary, when the crankshaft rotates, the connecting rod journal moves in a circle in the crankcase, and drives the piston to move up and down in the cylinder through the connecting rod. During the movement, the airtightness of the piston and the cylinder is required to be extremely high, so a piston groove is provided on the piston, and a seal is installed in the piston groove. Therefore, the airtightness detection of the seal is very important. The existing seal detection has the following problems: the seal is sleeved in the piston groove, so it is very inconvenient to take and put the seal during detection; at the same time, the piston is stationary during the seal sealing detection process, and the sealing of the seal during the piston movement process cannot be simulated. Summary of the invention

[0003] The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0004] In order to solve the technical problems mentioned in the above background technology section, some embodiments of the present application provide a sealing detection device for automobile seals, including a mounting plate, a pressurized tank fixedly mounted on the mounting plate, a sealing sleeve connected to the pressurized tank and fixedly mounted thereon, a first piston cylinder with one end movably mounted in the sealing sleeve, a piston device arranged on the first piston cylinder, a bracket fixedly mounted at the upper end of the pressurized tank, an auxiliary device arranged on the bracket and used to guide the other end of the piston, a driving device arranged on the bracket and used to drive the piston to reciprocate, a lifting plate fixedly sleeved at the upper end of the first piston cylinder, and two hydraulic cylinders with two ends respectively fixed on the lifting plate and the pressurized tank;

[0005] The piston device includes a lower plug section, an upper plug section and a threaded section, a cone fixedly arranged on the lower plug section, a discharge ring groove located at the cone and arranged on the lower plug section, a conical groove arranged at the lower end of the upper plug section, an internal thread sleeve sleeved on the threaded section, a joint rotatably arranged on the internal thread sleeve, an extension rod fixedly arranged on the lower plug section at one end, a connecting plate fixedly arranged on the extension rod, and a center rod movably arranged on the pressurized tank and fixedly arranged on the connecting plate; the upper end of the center rod is fixedly connected to the joint.

[0006] Specifically, the piston device also includes a gear fixedly mounted on the internal threaded sleeve, a first slide groove mounted on the bracket, a first moving block slidably mounted on the first slide groove, two sliding rods fixedly mounted on the first moving block, a rack slidably mounted on the two sliding rods and meshing with the gear, a first limit plate and a second limit plate fixedly mounted on the rack, a first screw rod threadably matched with the first moving block and rotatably mounted on the bracket, and a first motor fixedly mounted on the bracket and used to drive the first screw rod to rotate; the gear is located between the first limit plate and the second limit plate.

[0007] Specifically, the auxiliary device includes a lifting block fixedly mounted on the upper plug section, an auxiliary frame fixedly mounted on the bracket, two first moving rods and two second moving rods that are parallel and move through the auxiliary frame, a first translation plate fixedly mounted at the same end of the two first moving rods, a second translation plate fixedly mounted at the same end of the two second moving rods, a first spring mounted on the first moving rod and having its two ends respectively fixed on the auxiliary frame and the first translation plate, a second spring mounted on the second moving rod and having its two ends respectively fixed on the auxiliary frame and the second translation plate, two first rotating rods that are parallel and rotated on the first moving plate and the lifting block at both ends, and two second rotating rods that are parallel and rotated on the second moving plate and the lifting block at both ends; the first moving rod and the second moving rod are symmetrically arranged; the first rotating rod and the second rotating rod are symmetrically arranged.

[0008] Specifically, the pressurized tank includes a tank body, an air filling pipe with one end inserted into the tank body and fixed thereon, a pressure relief valve and a pressure gauge, and an electromagnetic valve arranged on the air filling pipe; the air filling pipe is connected to an air pump.

[0009] Specifically, the driving device includes a first driving rod rotatably provided on a joint at one end, a turntable rotatably provided on a bracket, a second motor fixedly provided on the bracket and used for driving the turntable to rotate, a connecting shaft rotatably provided on the other end of the first driving rod, a second driving rod eccentrically rotatably provided on the turntable at one end and rotatably sleeved on the connecting shaft at the other end, a second slide groove provided on the bracket, a second moving block slidably provided on the second slide groove, an auxiliary rod rotatably sleeved on the connecting shaft at one end and rotatably provided on the second moving block at the other end, a second screw rod threadably matched with the second moving block and rotatably provided on the bracket, and a third motor fixedly provided on the bracket and used for driving the second screw rod to rotate.

[0010] Specifically, the piston device also includes a second piston cylinder connected to the pressure tank and fixed thereon, and an adapter piston slidably arranged in the second piston cylinder and fixed on the extension rod; the first piston cylinder and the second piston cylinder are symmetrically arranged.

[0011] The beneficial effects of the present invention are:

[0012] The auxiliary device can ensure the vertical movement of the upper plug section, and the threaded section is fixedly connected to the upper plug section, so that when the internal thread sleeve is rotated, the threaded section and the upper plug section move together, so that the upper plug section and the lower plug section are separated, and the cone is moved out of the conical groove, and then the seal is sleeved on the cone, and the internal thread sleeve is rotated in the opposite direction, so that the upper plug section pushes the seal to move in the direction of the discharge ring groove, and finally pushes it into the discharge ring groove, and the cone is reinserted into the conical groove. The above arrangement facilitates the placement of the seal, and the cone arrangement plays a guiding role in the process of placing the seal. After the seal is placed in the discharge ring groove, the two hydraulic cylinders are started at the same time to drive the lifting plate to rise, and the lifting plate drives the first piston cylinder to move together, so that the discharge ring groove and the seal are located in the first piston cylinder and at its center. After the two hydraulic cylinders stop driving, the first piston cylinder remains in position, and air is injected into the pressurized tank to increase the pressure in the pressurized tank. After the pressure in the pressurized tank reaches the specified requirement, Stop the injection of air, then start the driving device, the driving device drives the joint and the center rod to move back and forth synchronously, the center rod drives the connecting plate to move together, the connecting plate drives the extension rod to move together, the extension rod drives the lower plug section to move together, the joint drives the internal threaded sleeve, the threaded section, and the upper plug section to move together, so that the upper plug section and the lower plug section move back and forth together, so that the sealing member in the first piston cylinder moves back and forth, and the pressure change in the pressurized tank is observed during the reciprocating movement, and the pressure in the pressurized tank after the seal stops moving is compared with the required pressure, so that the sealing performance of the seal during actual use can be simulated by the above device; after the sealing performance test of the seal is completed, the lifting plate is driven down by the driving device to make the first piston cylinder descend, so that the seal can be moved out of the first piston cylinder, and then the internal threaded sleeve is rotated to separate the upper plug section and the lower plug section, and the seal is moved to make the seal disengage from the discharge ring groove, thereby facilitating the removal of the seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.

[0014] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the components and elements are not necessarily drawn to scale.

[0015] In the attached picture:

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 It is a front view schematic diagram of the auxiliary device;

[0018] Figure 3 for Figure 2 The structural cross-sectional view of line AA in FIG. 1 mainly shows the structural cross-sectional view of the piston device;

[0019] Figure 4 for Figure 3 A in the enlarged view;

[0020] Figure 5 for Figure 3 The enlarged view of point B in the figure;

[0021] Figure 6 A schematic diagram of the structure of the driving device.

[0022] The following are the descriptions of the reference numerals:

[0023] 1. Mounting plate; 2. Pressurized tank; 21. Tank body; 22. Inflatable tube; 23. Solenoid valve; 24. Pressure relief valve; 25. Pressure gauge; 3. Sealing sleeve; 4. First piston cylinder; 5. Piston device; 51. Lower plug section; 52. Upper plug section; 53. Threaded section; 54. Cone; 55. Discharge ring groove; 56. Conical groove; 57. Internal thread sleeve; 58. Joint; 59. Extension rod; 510. Connecting plate; 520. Center rod; 530. Gear; 540. First slide groove; 550. First moving block; 560. Slide rod; 570. Rack; 580. First limit plate; 590. Second limit plate; 5100. First screw; 5200 , the first motor; 5300, the second piston cylinder; 5400, the adapter piston; 6, the bracket; 7, the auxiliary device; 71, the lifting block; 72, the auxiliary frame; 73, the first moving rod; 74, the second moving rod; 75, the first translation plate; 76, the second translation plate; 77, the first spring; 78, the second spring; 79, the first rotating rod; 710, the second rotating rod; 8, the driving device; 81, the first driving rod; 82, the turntable; 83, the second motor; 84, the connecting shaft; 85, the second driving rod; 86, the second slide groove; 87, the second moving block; 88, the auxiliary rod; 89, the second screw; 810, the third motor; 9, the lifting plate; 10, the hydraulic cylinder. DETAILED DESCRIPTION

[0024] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0025] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0026] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0027] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0028] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0029] Reference Figure 1-Figure 6 As shown, the sealing property testing device for automobile seals of the present invention comprises a mounting plate 1, a pressurized tank 2 fixedly mounted on the mounting plate 1, a sealing sleeve 3 connected to and fixedly mounted on the pressurized tank 2, a first piston cylinder 4 with one end movable in the sealing sleeve 3, a piston device 5 arranged on the first piston cylinder 4, a bracket 6 fixedly mounted at the upper end of the pressurized tank 2, an auxiliary device 7 arranged on the bracket 6 and used for guiding the other end of the piston, a driving device 8 arranged on the bracket 6 and used for driving the piston to reciprocate, a lifting plate 9 fixedly sleeved at the upper end of the first piston cylinder 4, and two hydraulic cylinders 10 with two ends respectively fixed on the lifting plate 9 and the pressurized tank 2;

[0030] The piston device 5 comprises a lower plug section 51, an upper plug section 52 and a threaded section 53, a cone 54 fixedly arranged on the lower plug section 51, a discharge ring groove 55 located at the cone 54 and arranged on the lower plug section 51, a tapered groove 56 arranged at the lower end of the upper plug section 52, an internal thread sleeve 57 sleeved on the threaded section 53, a joint 58 rotatably arranged on the internal thread sleeve 57, an extension rod 59 fixedly arranged on the lower plug section 51 at one end, a connecting plate 510 fixedly arranged on the extension rod 59, and a center rod 520 that penetrates and moves on the pressure tank 2 and is fixedly arranged on the connecting plate 510; the upper end of the center rod 520 is fixedly connected to the joint 58;

[0031] The auxiliary device 7 can ensure that the upper plug section 52 moves in the vertical direction, and the threaded section 53 is fixedly connected to the upper plug section 52, so that when the internal threaded sleeve 57 is rotated, the threaded section 53 and the upper plug section 52 move together, so that the upper plug section 52 and the lower plug section 51 are separated, and the cone 54 is moved out of the tapered groove 56, and then the seal is sleeved on the cone 54, and the internal threaded sleeve 57 is rotated in the opposite direction, so that the upper plug section 52 pushes the seal to move in the direction of the discharge ring groove 55, and finally pushes it into the discharge ring groove 55, and the cone 54 is reinserted into the tapered groove 56, and the seal is inserted into the upper The above arrangement facilitates the placement of the seal, and the cone 54 is arranged to guide the placement of the seal. After the seal is placed in the discharge ring groove 55, the two hydraulic cylinders 10 are started at the same time to drive the lifting plate 9 to rise, and the lifting plate 9 drives the first piston cylinder 4 to move together, so that the discharge ring groove 55 and the seal are located in the first piston cylinder 4 and at the center thereof. After the two hydraulic cylinders 10 stop driving, the first piston cylinder 4 remains in place, and air is injected into the pressurized tank 2 to increase the pressure in the pressurized tank 2, and the pressure in the pressurized tank 2 reaches the specified requirements. After that, the injection of air is stopped, and the driving device 8 is started. The driving device 8 drives the joint 58 and the center rod 520 to move back and forth synchronously, the center rod 520 drives the connecting plate 510 to move together, the connecting plate 510 drives the extension rod 59 to move together, the extension rod 59 drives the lower plug section 51 to move together, and the joint 58 drives the internal threaded sleeve 57, the threaded section 53, and the upper plug section 52 to move together, so that the upper plug section 52 and the lower plug section 51 move back and forth together, so that the sealing element is located in the first piston cylinder 4 and moves back and forth. Watch during the reciprocating movement The pressure changes in the pressurized tank 2, and the pressure in the pressurized tank 2 after the seal stops moving are compared with the required pressure, so that the sealing performance of the seal during actual use can be simulated through the above-mentioned device; after the sealing performance test of the seal is completed, the lifting plate 9 is driven down by the driving device 8 to lower the first piston cylinder 4, so that the seal can be moved out of the first piston cylinder 4, and then the internal threaded sleeve 57 is rotated to separate the upper plug section 52 and the lower plug section 51, and the seal is moved to separate the seal from the discharge ring groove 55, thereby facilitating the removal of the seal.

[0032] Specifically, the piston device 5 also includes a gear 530 fixedly sleeved on the internal thread sleeve 57, a first slide groove 540 provided on the bracket 6, a first moving block 550 slidably provided on the first slide groove 540, two slide bars 560 fixedly provided on the first moving block 550, a rack 570 slidably provided on the two slide bars 560 and meshing with the gear 530, a first limiting plate 580 and a second limiting plate 590 fixedly provided on the rack 570, a first screw 5100 threadedly matched with the first moving block 550 and rotatably provided on the bracket 6, and a first motor 5200 fixedly provided on the bracket 6 and used to drive the first screw 5100 to rotate; the gear 530 is located between the first limiting plate 580 and the second limiting plate 590; start the first limiting plate 580 and the second limiting plate 590. A motor 5200, the first motor 5200 drives the first screw 5100 to rotate forward, so that the first moving block 550 and the two sliding rods 560 move together, so that the rack 570 moves, and the rack 570 is engaged with the gear 530, so that the gear 530 rotates, and the gear 530 is fixed on the internal threaded sleeve 57, so that the internal threaded sleeve 57 rotates, and the first motor 5200 drives the first screw 5100 to reverse, reset the first moving block 550 and the two sliding rods 560, and finally reset the internal threaded sleeve 57; when the joint 58, the internal threaded sleeve 57, the gear 530, the threaded section 53, and the upper plug section 52 reciprocate, the first limit plate 580 and the second limit plate 590 are set to make the rack 570 located on the two sliding rods 560 reciprocate.

[0033] Specifically, the auxiliary device 7 includes a lifting block 71 fixedly sleeved on the upper plug section 52, an auxiliary frame 72 fixedly mounted on the bracket 6, two first moving rods 73 and two second moving rods 74 arranged on the auxiliary frame 72 for parallel and penetrating movement, a first translation plate 75 fixedly arranged at the same end of the two first moving rods 73, a second translation plate 76 fixedly arranged at the same end of the two second moving rods 74, a first spring 77 sleeved on the first moving rod 73 and having its two ends fixed on the auxiliary frame 72 and the first translation plate 75 respectively, a second spring 78 sleeved on the second moving rod 74 and having its two ends fixed on the auxiliary frame 72 and the second translation plate 76 respectively, two first rotating rods 79 arranged on the first moving plate and the lifting block 71 for parallel and rotation at both ends, and a first rotating rod 79 arranged on the second moving plate 76 for parallel and rotation at both ends The two second rotating rods 710 on the plate and the lifting block 71; the first moving rod 73 and the second moving rod 74 are symmetrically arranged; the first rotating rod 79 and the second rotating rod 710 are symmetrically arranged; during the reciprocating movement of the upper plug section 52 in the vertical direction, the lifting block 71 is driven to move, and the lifting block 71 drives the two first rotating rods 79 and the two second rotating rods 710 to rotate synchronously, and the two rotate relative to each other, so that the first translation plate 75 and the second translation plate 76 move relative to each other, and the two first moving rods 73 and the two second moving rods 74 move relative to each other, so that the first spring 77 and the second spring 78 are self-adaptively extended and retracted. Through the above arrangement, the upper plug section 52 can be moved in the vertical direction, and the straightness is good during the movement, thereby improving the accuracy of the sealing detection of the seal, and at the same time, the upper plug section 52 has good stability during the reciprocating movement.

[0034] Specifically, the pressurized tank 2 includes a tank body 21, an inflation tube 22 with one end inserted into the tank body 21 and fixed thereon, a pressure relief valve 24 and a pressure gauge 25, and a solenoid valve 23 arranged on the inflation tube 22; the inflation tube 22 is connected to the air pump; the air pump and the solenoid valve 23 are opened at the same time to inject air into the tank body 21, and the pressure in the tank body 21 is convenient to observe through the pressure gauge 25. After the pressure reaches the requirement, the solenoid valve 23 and the air pump are closed at the same time. When the pressure in the tank body 21 exceeds the requirement, the tank body 21 is depressurized through the pressure relief valve 24. When the pressure in the tank body 21 does not reach the requirement, the air pump injects air into the tank body 21 to ensure that the pressure in the tank body 21 is consistent, thereby facilitating the detection of the sealing performance of the seal.

[0035] Specifically, the driving device 8 includes a first driving rod 81 rotatably provided on the joint 58 at one end, a turntable 82 rotatably provided on the bracket 6, a second motor 83 fixedly provided on the bracket 6 and used to drive the turntable 82 to rotate, a connecting shaft 84 rotatably provided on the other end of the first driving rod 81, a second driving rod 85 eccentrically rotatably provided on the turntable 82 at one end and rotatably sleeved on the connecting shaft 84 at the other end, a second slide groove 86 provided on the bracket 6, a second moving block 87 slidably provided on the second slide groove 86, an auxiliary rod 88 rotatably sleeved on the connecting shaft 84 at one end and rotatably provided on the second moving block 87 at the other end, a second screw 89 threadedly matched with the second moving block 87 and rotatably provided on the bracket 6, and a second screw rod 89 fixedly provided on the bracket 6 and used to drive the second screw rod 89. The third motor 810 rotates the rod 89; the second motor 83 is started, and the second motor 83 drives the turntable 82 to rotate, so that the second drive rod 85 and the first drive rod 81 and the auxiliary rod 88 rotate in a self-adaptive manner, and the drive joint 58 reciprocates in the vertical direction. The above-mentioned arrangement has a good labor-saving effect. The auxiliary rod 88 is arranged to ensure that the first drive rod 81 and the second drive rod 85 are stable during rotation, which again plays a labor-saving role. At the same time, the second screw rod 89 is driven to rotate by the third motor 810 to move the second moving block 87, thereby changing the position of one end of the auxiliary rod 88, thereby finally changing the distance of the vertical reciprocating movement of the joint 58, thereby changing the distance of the reciprocating movement of the seal, thereby simulating the sealing performance of the seal when it reciprocates at different distances.

[0036] Specifically, the piston device 5 also includes a second piston cylinder 5300 connected to the pressurized tank 2 and fixed thereon, and an adapter piston 5400 slidably arranged in the second piston cylinder 5300 and fixed on the extension rod 59; the first piston cylinder 4 and the second piston cylinder 5300 are symmetrically arranged; when the lower plug section 51 and the upper plug section 52 move back and forth synchronously, the extension rod 59 is driven to move together, thereby causing the adapter piston 5400 to move together, and causing the adapter piston 5400 to reciprocate in the second piston cylinder 5300. Through the above arrangement, when the seal moves back and forth, the space inside the pressurized tank 2 does not change, so that when the sealing performance of the seal meets the requirements, the pointer of the pressure gauge 25 does not change.

[0037] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure.

Claims

1. An automobile seal sealing detection device, characterized in that: The invention comprises a mounting plate (1), a pressurized tank (2) fixedly mounted on the mounting plate (1), a sealing sleeve (3) connected to the pressurized tank (2) and fixedly mounted thereon, a first piston cylinder (4) with one end movably mounted in the sealing sleeve (3), a piston device (5) mounted on the first piston cylinder (4), a bracket (6) fixedly mounted at the upper end of the pressurized tank (2), an auxiliary device (7) mounted on the bracket (6) and used for guiding the other end of the piston, a driving device (8) mounted on the bracket (6) and used for driving the piston to reciprocate, a lifting plate (9) fixedly mounted at the upper end of the first piston cylinder (4), and two hydraulic cylinders (10) with two ends respectively fixedly mounted on the lifting plate (9) and the pressurized tank (2); The piston device (5) comprises a lower plug section (51), an upper plug section (52) and a threaded section (53), a cone (54) fixedly arranged on the lower plug section (51), a discharge ring groove (55) located at the cone (54) and arranged on the lower plug section (51), a tapered groove (56) arranged at the lower end of the upper plug section (52), an internal thread sleeve (57) sleeved on the threaded section (53), a joint (58) rotatably arranged on the internal thread sleeve (57), an extension rod (59) fixedly arranged at one end on the lower plug section (51), a connecting plate (510) fixedly arranged on the extension rod (59), and a center rod (520) movably arranged on the pressure tank (2) and fixedly arranged on the connecting plate (510); the upper end of the center rod (520) is fixedly connected to the joint (58); The piston device (5) further comprises a gear (530) fixedly sleeved on the internal thread sleeve (57), a first slide groove (540) provided on the bracket (6), a first moving block (550) slidably provided on the first slide groove (540), two slide bars (560) fixedly provided on the first moving block (550), a rack (570) slidably provided on the two slide bars (560) and meshing with the gear (530), a first limiting plate (580) and a second limiting plate (590) fixedly provided on the rack (570), a first screw (5100) threadably engaged with the first moving block (550) and rotatably provided on the bracket (6), and a first motor (5200) fixedly provided on the bracket (6) and used for driving the first screw (5100) to rotate; the gear (530) is located between the first limiting plate (580) and the second limiting plate (590); The driving device (8) comprises a first driving rod (81) having one end rotatably mounted on a joint (58), a rotating disk (82) rotatably mounted on a bracket (6), a second motor (83) fixedly mounted on the bracket (6) and used for driving the rotating disk (82) to rotate, a connecting shaft (84) rotatably mounted on the other end of the first driving rod (81), a second driving rod (85) having one end eccentrically rotatably mounted on the rotating disk (82) and the other end rotatably sleeved on the connecting shaft (84), a second slide groove (86) mounted on the bracket (6), a second moving block (87) slidably mounted on the second slide groove (86), an auxiliary rod (88) having one end rotatably sleeved on the connecting shaft (84) and the other end rotatably mounted on the second moving block (87), a second screw rod (89) threadedly engaged with the second moving block (87) and rotatably mounted on the bracket (6), and a third motor (810) fixedly mounted on the bracket (6) and used for driving the second screw rod (89) to rotate.

2. The automobile seal sealing detection device according to claim 1, characterized in that: The auxiliary device (7) comprises a lifting block (71) fixedly sleeved on the upper plug section (52), an auxiliary frame (72) fixedly mounted on the bracket (6), two first moving rods (73) and two second moving rods (74) arranged on the auxiliary frame (72) for parallel and penetrating movement, a first translation plate (75) fixedly mounted at the same end of the two first moving rods (73), a second translation plate (76) fixedly mounted at the same end of the two second moving rods (74), a sleeved lifting block (71) and having its two ends respectively fixed on the auxiliary frame (72) and the first translation plate (75). ), a first spring (77) on the second moving rod (74), a second spring (78) sleeved on the second moving rod (74) and fixed at both ends to the auxiliary frame (72) and the second translation plate (76), two first rotating rods (79) arranged in parallel and rotatably at both ends on the first moving plate and the lifting block (71), and two second rotating rods (710) arranged in parallel and rotatably at both ends on the second moving plate and the lifting block (71); the first moving rod (73) and the second moving rod (74) are symmetrically arranged; the first rotating rod (79) and the second rotating rod (710) are symmetrically arranged.

3. The automobile sealing component sealing detection device according to claim 1, characterized in that: The pressurized tank (2) comprises a tank body (21), an air charging pipe (22) with one end inserted into the tank body (21) and fixed thereon, a pressure relief valve (24), a pressure gauge (25), and an electromagnetic valve (23) arranged on the air charging pipe (22); the air charging pipe (22) is connected to an air pump.

4. The automobile seal sealing detection device according to claim 1, characterized in that: The piston device (5) further comprises a second piston cylinder (5300) which is in communication with the pressure tank (2) and fixedly mounted thereon, and an adaptor piston (5400) which is slidably mounted in the second piston cylinder (5300) and fixedly mounted on the extension rod (59); the first piston cylinder (4) and the second piston cylinder (5300) are symmetrically arranged.

Images