A limit device for automobile tail exhaust detection

Abstract

The present invention discloses a limiting device for detecting exhaust gas at the rear end of an automobile, comprising a device base, a universal wheel mounted at the lower end thereof; a fixing plate mounted on the device base, and an electric telescopic rod mounted on the fixing plate; a limiting plate, a groove formed at the lower end of which engages with a limiting ball provided at the upper end of the electric telescopic rod; and a rotating screw, the limiting plate mounted at the upper end thereof. The limiting device for detecting exhaust gas at the rear end of an automobile, by rotating the screw to cause a movable sleeve to drive the limiting plate up and down, can detect exhaust pipes of different heights, and can ensure alignment under the action of a measuring scale to prevent excessive exhaust gas leakage. The movable plate and the bonding plate can be supported and damped by pushing a spring and a shock-absorbing rod, so that whether the installation is correct can be detected under the action of a pressure sensing device. At the same time, the clamping plate can clamp the exhaust pipe body in a bonded manner, effectively preventing the air guide pipe from falling off.

Description

Technical Field

[0001] The present invention relates to the technical field of tail exhaust detection, and in particular to a limiting device for automobile tail exhaust detection. Background Art

[0002] The exhaust from the tail of a car is also called automobile exhaust. With the development of science and technology and the progress of society, more and more diverse means of transportation have entered our lives, and cars are a very common and widely used means of transportation. Automobile exhaust is the harmful gas produced by cars during work and driving. Usually, automobile exhaust contains hundreds of different compounds, among which pollutants include solid suspended particles, carbon monoxide, carbon dioxide, hydrocarbons, nitrogen oxides, lead and sulfur oxides, etc., and as the age of the car increases, there are more harmful substances in the automobile exhaust. Therefore, it is necessary to regularly test the exhaust of the car to see whether it meets the emission standards.

[0003] However, there are also some problems in the process of testing the exhaust gas at the rear end of the car. For example, a common testing method is to directly fit the pipe connected to the exhaust gas detection device to the outer surface of the car's exhaust pipe. In this process, the pipe needs to be placed manually and then locked by turning the screws, which is very time-consuming and labor-intensive, and it is difficult to ensure the tightness of the engagement. As a result, the pipe is prone to falling off during the testing process, and after the test is completed, the test pipe needs to be removed manually. At this time, because the exhaust pipe is hot, it is easy to burn the hands of the staff, posing a major safety hazard.

[0004] In response to the above problems, it is urgent to carry out innovative design based on the original automobile tail exhaust detection device. Summary of the Invention

[0005] The purpose of the present invention is to provide a limiting device for automobile tail exhaust detection, so as to solve the problem proposed in the above background technology that the pipe needs to be placed manually and then engaged by turning screws, which is time-consuming and labor-intensive and prone to falling off. After the detection is completed, the detection pipe needs to be removed manually, which can easily burn the hands of the staff.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a limit device for automobile tail exhaust detection, comprising a device base, a universal wheel mounted at the lower end of which, a motor is mounted on the device base, and the output end of the motor is connected to a rotating shaft, the rotating shaft is rotatably connected to the device base via a bearing mounted on the device base, and a primary detection box is mounted on the device base;

[0007] Also includes:

[0008] A fixed plate is mounted on the base of the device, and an electric telescopic rod is mounted on the fixed plate;

[0009] The limiting plate is engaged with the limiting ball provided at the upper end of the electric telescopic rod through the groove provided at the lower end thereof;

[0010] The screw is rotated, and the limit plate is installed on the upper end of the screw;

[0011] The movable sleeve is threadedly connected to the rotating screw through a threaded groove provided inside the movable sleeve;

[0012] a limiting plate mounted on the upper end of the movable sleeve;

[0013] an air guide tube, the outer surface of which is in contact with the inner surface of the restriction plate, and the air guide tube is connected to the delivery tube;

[0014] A mounting plate is installed inside the air duct, and a through hole with a diameter of 2 cm is opened on the mounting plate;

[0015] a primary detection device, mounted on the mounting plate;

[0016] a connecting wire, mounted on the primary detection device, and connected to the primary detection box;

[0017] A receiving plate is symmetrically arranged on the outer surface of the air guide tube, and a fixing sleeve is installed on the receiving plate;

[0018] A push spring is arranged in a groove provided on the fixed sleeve;

[0019] A shock absorbing rod is connected to the push spring, and the shock absorbing rod is in sliding connection with the fixed sleeve;

[0020] The movable sliders are symmetrically distributed about the center of the shock absorbing rod, and the movable sliders are slidably connected to the fixed sleeve through the grooves provided on the fixed sleeve;

[0021] An additional plate is installed on the receiving plate;

[0022] A pressure sensing device is mounted on the mounting plate, the pressure sensing device is connected to a warning device via a wire, and the warning device is mounted outside the receiving plate;

[0023] An exhaust pipe body, the air guide pipe being arranged inside the exhaust pipe;

[0024] An external connecting plate is installed on the outside of the air duct, and a fixed rotating shaft is installed on the external connecting plate.

[0025] Preferably, a first gear is installed on the rotating shaft, and the first gear and the second gear are engaged with each other, and the diameter and the number of teeth of the first gear and the second gear are set to be equal. At the same time, the second gear is installed at the lower end of the rotating screw. Through the above structure, it is easy to ensure the consistency of movement and avoid the phenomenon of gear jamming during rotation.

[0026] Preferably, the movable sleeve is slidably connected to the slide rail provided on the base of the device through two symmetrically arranged sliders on the outside, and a cylindrical threaded groove is provided inside the movable sleeve. Through the above structure, the moving range of the movable sleeve can be easily limited.

[0027] Preferably, the shock-absorbing rod is symmetrically arranged on the movable plate, and a driving slider is installed at the lower end of the movable plate, and the driving slider is slidably connected to the air guide tube through a groove opened on the air guide tube. Through the above structure, it is convenient to limit the movable plate by driving the slider.

[0028] Preferably, the driving slider is set to a "T" shape, and the outer surface of the driving slider is smooth, and the driving slider is provided with 4 equal angles about the center of the movable plate. Through the above structure, it is convenient to connect the movable plate and the air guide tube.

[0029] Preferably, a bonding plate is installed on the movable plate, and the outer surface of the bonding plate is set to a matte surface, and the bonding plate and the movable plate are both set to a circular plate structure. Through the above structure, it is convenient to bond the bonding plate with the exhaust pipe body, thereby avoiding a large amount of exhaust gas directly overflowing.

[0030] Preferably, a guide rod passes through the mounting plate, and the guide rod is symmetrically arranged at the lower end of the pulling rod, and the pulling rod is connected to the mounting plate and the two ends of the pulling spring. Through the above structure, it is convenient to drive the guide rod to move up and down through the pulling rod.

[0031] Preferably, the pulling rod is installed on the clamping plate, and an arc-shaped groove is provided at the lower end of the clamping plate, and the outer surface of the clamping plate is set to be matte, and the clamping plate is set to be made of stainless steel. Through the above structure, it is convenient to clamp and limit the exhaust pipe body through the clamping plate.

[0032] Preferably, a vortex spring is provided on the outside of the fixed rotating shaft, and the vortex spring is installed in a groove opened on the measuring scale, and there are two measuring scales in total. Through the above structure, it is convenient to measure the exhaust pipe body through the measuring scale, so that the air guide pipe is as close to the center of the exhaust pipe body as possible.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] (1) The limit device for automobile tail exhaust detection is provided with a motor, a rotating shaft, a first gear, a second gear, a fixed plate, an electric telescopic rod, a limit plate, a rotating screw, a movable sleeve, a limit plate and an air guide pipe. The first gear drives the second gear to rotate, thereby rotating the rotating screw, and then the movable sleeve drives the limit plate to move up and down, which is convenient for detecting exhaust pipes at different heights. Under the action of the measuring scale, the alignment effect can be ensured to avoid the occurrence of excessive exhaust gas leakage;

[0035] (2) The limit device for exhaust detection at the rear of a car is provided with a fixed sleeve, a push spring, a shock-absorbing rod, a movable plate, a driving slider, a bonding plate, a pressure sensing device, a guide rod, a pulling rod, a pulling spring and a clamping plate. At this time, the push spring and the shock-absorbing rod can be used to support and damp the movable plate and the bonding plate, so that the pressure sensing device can detect whether the installation is correct. At the same time, the clamping plate can be clamped to the tail pipe body, which can effectively prevent the air guide pipe from falling off, and no manual rotation and fixing is required, which is more convenient and safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the main structure of the limiting plate of the present invention;

[0037] Figure 2 Schematic diagram of the side cross-sectional structure of the movable sleeve of the present invention;

[0038] Figure 3 This is a schematic diagram of the main cross-sectional structure of the airway tube of the present invention;

[0039] Figure 4 Schematic diagram of the side cross-sectional structure of the clamping plate of the present invention;

[0040] Figure 5 This is a schematic diagram of the side cross-sectional structure of the driving slider of the present invention;

[0041] Figure 6 For the present invention Figure 3 A in the middle is an enlarged structural diagram;

[0042] Figure 7 This is a schematic diagram of the main cross-sectional structure of the measuring scale of the present invention;

[0043] Figure 8 This is a schematic diagram of the three-dimensional structure of the limiting plate of the present invention;

[0044] Figure 9 It is a schematic diagram of the three-dimensional structure of the movable plate of the present invention.

[0045] In the figure: 1. device base; 2. universal wheel; 3. motor; 4. rotating shaft; 5. first gear; 6. second gear; 7. fixed plate; 8. electric telescopic rod; 9. limit plate; 10. rotating screw; 11. movable sleeve; 12. limit plate; 13. air guide tube; 14. delivery tube; 15. mounting plate; 16. primary detection device; 17. connecting wire; 18. primary detection box; 19. receiving plate; 20. fixed sleeve; 21. push spring; 22. shock absorber rod; 23. movable slider; 24. movable plate; 25. driving slider; 26. fitting plate; 27. additional plate; 28. pressure sensing device; 29. guide rod; 30. pulling rod; 31. pulling spring; 32. clamping plate; 33. exhaust pipe body; 34. external plate; 35. fixed rotating shaft; 36. vortex spring; 37. measuring scale; 38. warning device. DETAILED DESCRIPTION

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0047] See also Figure 1-9 The present invention provides a technical solution: a limit device for automobile tail exhaust detection, comprising a device base 1, a universal wheel 2 mounted at the lower end thereof, a motor 3 mounted on the device base 1, and an output end of the motor 3 is connected to a rotating shaft 4, the rotating shaft 4 is rotatably connected to the device base 1 via a bearing mounted on the device base 1, and a primary detection box 18 is mounted on the device base 1;

[0048] Also includes:

[0049] A fixed plate 7 is mounted on the device base 1, and an electric telescopic rod 8 is mounted on the fixed plate 7;

[0050] The limiting plate 9 is fitted with the limiting ball provided at the upper end of the electric telescopic rod 8 through the groove provided at the lower end thereof;

[0051] The screw 10 is rotated, and a limit plate 9 is installed on its upper end;

[0052] The movable sleeve 11 is threadedly connected to the rotating screw 10 through the thread groove provided inside the movable sleeve 11;

[0053] The limiting plate 12 is mounted on the upper end of the movable sleeve 11;

[0054] The air guide tube 13 has an outer surface that is in contact with the inner surface of the limiting plate 12, and the air guide tube 13 is connected to the delivery tube 14;

[0055] The mounting plate 15 is installed inside the air guide tube 13, and a through hole with a diameter of 2 cm is opened on the mounting plate 15;

[0056] A primary detection device 16 is mounted on the mounting plate 15;

[0057] A connecting wire 17 is installed on the primary detection device 16, and the connecting wire 17 is connected to the primary detection box 18;

[0058] The receiving plate 19 is symmetrically arranged on the outer surface of the air guide tube 13, and a fixing sleeve 20 is installed on the receiving plate 19;

[0059] The push spring 21 is arranged in a groove formed on the fixed sleeve 20;

[0060] The shock absorbing rod 22 is connected to the push spring 21, and the shock absorbing rod 22 is slidably connected to the fixed sleeve 20;

[0061] The movable slider 23 is symmetrically distributed about the center of the shock absorbing rod 22, and the movable slider 23 is slidably connected to the fixed sleeve 20 through the groove provided on the fixed sleeve 20;

[0062] The additional plate 27 is installed on the receiving plate 19;

[0063] The pressure sensing device 28 is mounted on the mounting plate 27 and is connected to the warning device 38 via a wire, and the warning device 38 is mounted on the outside of the receiving plate 19;

[0064] The tailpipe body 33 has an air guide pipe 13 disposed therein;

[0065] An external plate 34 is mounted on the outside of the air guide tube 13, and a fixed shaft 35 is mounted on the external plate 34;

[0066] In this example, a first gear 5 is installed on the rotating shaft 4, and the first gear 5 and the second gear 6 are meshed with each other, and the diameter and number of teeth of the first gear 5 and the second gear 6 are set to be equal, and the second gear 6 is installed at the lower end of the rotating screw 10; the movable sleeve 11 is slidably connected to the slide rail provided on the device base 1 through two sliders symmetrically arranged on the outside, and a cylindrical threaded groove is opened inside the movable sleeve 11; the shock-absorbing rod 22 is symmetrically arranged on the movable plate 24, and a driving slider 25 is installed at the lower end of the movable plate 24, and the driving slider 25 is slidably connected to the air guide tube 13 through the groove opened on the air guide tube 13; the driving slider 25 is set in a "T" shape, and the outer surface of the driving slider 25 is smooth, and the driving slider 25 is set at 4 equal angles about the center of the movable plate 24; a bonding plate 26 is installed on the movable plate 24, and the outer surface of the bonding plate 26 is matte, and the bonding plate 26 and the movable plate 24 are both set as annular plate structures;

[0067] When the air duct 13 needs to be set inside the tailpipe body 33, the device base 1 is moved so that the device base 1 moves in the direction close to the car to be detected. When the right end of the air duct 13 approaches the left end of the tailpipe body 33, the motor 3 starts to work. Because the output end of the motor 3 is connected to the rotating shaft 4, the rotating shaft 4 drives the first gear 5 installed on its upper end to rotate. Because the first gear 5 and the second gear 6 are meshed with each other, the second gear 6 also starts to rotate. Because the second gear 6 is engaged with the rotating screw 1 0 are connected to each other, and the rotating screw 10 starts to drive the movable sleeve 11 to move (a slider is provided on the outside of the movable sleeve 11, and the slider is slidably connected to the guide rail provided on the device base 1, so the movable sleeve 11 can only move up and down). Because the limiting plate 12 is installed on the upper end of the movable sleeve 11, and the limiting plate 12 and the air guide pipe 13 are in contact with each other, the air guide pipe 13 also starts to move up and down. Then, under the action of the measuring scale 37, it can be detected whether the air guide pipe 13 is near the center position of the tail pipe body 33. When it moves to the vicinity of the center of the tail pipe body 33, the motor 3 stops working and the electric telescopic rod 8 starts working. At this time, the ball set at the upper end of the electric telescopic rod 8 begins to fit into the groove opened at the lower end of the limit plate 9, thereby fixing the position of the limit plate 9, that is, the positions of the rotating screw 10, the movable sleeve 11, the limit plate 12 and the air guide pipe 13 are all fixed. Then, the device base 1 is pushed again to make the air guide pipe 13 enter the interior of the tail pipe body 33. At this time, the tail pipe body 33 begins to push the fitting plate 26 As the laminating plate 26 moves, the laminating plate 26 starts to move toward the fixed sleeve 20. As the laminating plate 26 moves, the movable plate 24 also starts to move under the action of the slider 25. Because the movable plate 24 is equipped with a shock-absorbing rod 22, the shock-absorbing rod 22 starts to apply force to the push spring 21, and the push spring 21 starts to be compressed and deformed. When the movable plate 24 and the pressure sensing device 28 are squeezed against each other, the pressure sensing device 28 starts to transmit a signal to the warning device 38, and the warning device 38 starts to alarm, reminding that it has been installed in place.

[0068] A guide rod 29 passes through the mounting plate 27 and is symmetrically arranged at the lower end of the pull rod 30. The pull rod 30, the mounting plate 27, and the ends of the pull spring 31 are interconnected. The pull rod 30 is mounted on a clamping plate 32, and an arc-shaped groove is formed at the lower end of the clamping plate 32. The outer surface of the clamping plate 32 is set to a matte surface and is made of stainless steel. A vortex spring 36 is set on the outside of the fixed rotating shaft 35 and is installed in a groove formed on the measuring scale 37. There are two measuring scales 37 in total.

[0069] When the cam 32 is in the closed position, the guide rod 39 is pulled back and the guide rod 39 is pulled back, so that the guide rod 39 is pushed back and the guide rod 39 is pushed back.

[0070] In the description of the present invention, unless otherwise specified, "plurality" means two or more; terms such as "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0071] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0072] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A limit device for detecting exhaust gas at the rear end of an automobile, comprising a device base (1), a universal wheel (2) being mounted at the lower end thereof, a motor (3) being mounted on the device base (1), an output end of the motor (3) being connected to a rotating shaft (4), the rotating shaft (4) being rotatably connected to the device base (1) via a bearing mounted on the device base (1), and a primary detection box (18) being mounted on the device base (1); It is characterized by: Also includes: A fixed plate (7) is mounted on the device base (1), and an electric telescopic rod (8) is mounted on the fixed plate (7); The limiting plate (9) is fitted with a limiting ball provided at the upper end of the electric telescopic rod (8) through a groove provided at the lower end thereof; A rotating screw (10) is provided with the limiting plate (9) at its upper end; A movable sleeve (11) is threadedly connected to the rotating screw (10) via a threaded groove provided therein; A limiting plate (12) is mounted on the upper end of the movable sleeve (11); An air guide tube (13), the outer surface of which is in contact with the inner surface of the limiting plate (12), and the air guide tube (13) and the delivery tube (14) are connected to each other; A mounting plate (15) is mounted inside the air guide tube (13), and a through hole with a diameter of 2 cm is provided on the mounting plate (15); A primary detection device (16) is mounted on the mounting plate (15); A connecting wire (17) is installed on the primary detection device (16), and the connecting wire (17) is connected to the primary detection box (18); A receiving plate (19) is symmetrically arranged on the outer surface of the air guide tube (13), and a fixing sleeve (20) is installed on the receiving plate (19); A push spring (21) is arranged in a groove formed on the fixed sleeve (20); A shock absorbing rod (22) is connected to the push spring (21), and the shock absorbing rod (22) is slidably connected to the fixed sleeve (20); The movable slider (23) is symmetrically distributed about the center of the shock absorbing rod (22), and the movable slider (23) is slidably connected to the fixed sleeve (20) through a groove provided on the fixed sleeve (20); An additional plate (27) is mounted on the receiving plate (19); A pressure sensing device (28) is mounted on the mounting plate (27), and the pressure sensing device (28) is connected to a warning device (38) via a wire, and the warning device (38) is mounted outside the receiving plate (19); An exhaust pipe body (33), the air guide pipe (13) being arranged inside the exhaust pipe body; An external connecting plate (34) is installed outside the air guide tube (13), and a fixed rotating shaft (35) is installed on the external connecting plate (34).

2. The limiting device for automobile tail exhaust detection according to claim 1 is characterized in that: A first gear (5) is mounted on the rotating shaft (4), and the first gear (5) and the second gear (6) are meshed with each other, and the diameters and the number of teeth of the first gear (5) and the second gear (6) are set to be equal, while the second gear (6) is mounted on the lower end of the rotating screw (10).

3. The limiting device for automobile tail exhaust detection according to claim 1 is characterized in that: The movable sleeve (11) is slidably connected to a slide rail provided on the device base (1) via two symmetrically arranged sliders on the outside, and a cylindrical threaded groove is provided inside the movable sleeve (11).

4. The limiting device for automobile tail exhaust detection according to claim 1 is characterized in that: The damping rod (22) is symmetrically arranged on the movable plate (24), and a driving slider (25) is installed at the lower end of the movable plate (24), and the driving slider (25) is slidably connected to the air guide tube (13) through a groove provided on the air guide tube (13).

5. The limiting device for automobile tail exhaust detection according to claim 4 is characterized in that: The driving slider (25) is set in a "T" shape, and the outer surface of the driving slider (25) is smooth, and the driving slider (25) is provided with four equal angles with respect to the center of the moving plate (24).

6. The limiting device for automobile tail exhaust detection according to claim 5, characterized in that: A laminating plate (26) is mounted on the movable plate (24), and the outer surface of the laminating plate (26) is configured as a matte surface, and both the laminating plate (26) and the movable plate (24) are configured as annular plate structures.

7. The limiting device for automobile tail exhaust detection according to claim 1, characterized in that: A guide rod (29) passes through the mounting plate (27), and the guide rod (29) is symmetrically arranged at the lower end of the pulling rod (30), and the pulling rod (30) and the mounting plate (27) and the two ends of the pulling spring (31) are interconnected.

8. The limiting device for automobile tail exhaust detection according to claim 7, characterized in that: The pulling rod (30) is mounted on the clamping plate (32), and an arc-shaped groove is provided at the lower end of the clamping plate (32), and the outer surface of the clamping plate (32) is set to be a matte surface, and the clamping plate (32) is set to be made of stainless steel.

9. The limit device for automobile tail exhaust detection according to claim 1, characterized in that: A vortex spring (36) is provided outside the fixed rotating shaft (35), and the vortex spring (36) is installed in a groove provided on a measuring scale (37), and a total of two measuring scales (37) are provided.

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