Accurate positioning and supporting device for waste gas control valve

Abstract

The invention belongs to the related technical field of waste gas control valve supporting, and particularly relates to a waste gas control valve precise positioning and supporting device which comprises a bottom plate, an adjusting assembly is arranged at the upper end of the bottom plate, the upper end of the adjusting assembly is fixedly connected to the lower end of a lap joint plate, and the lower end of the lap joint plate is fixedly connected with two first fixing plates. By integrating multiple adjustment functions of height, horizontal spacing and rotation angle, for example, the adjustment assembly realizes stepless adjustment of the supporting height and high stability through a shear type lifting mechanism formed by a double-shaft motor, a threaded rod and a hinged plate; the driving assembly is matched with a guide rod and a sliding block mechanism through a second electric push rod main body and a third electric push rod main body, independent and accurate control over front-back clamping and left-right spacing of the valve is achieved, and valves of different specifications can be rapidly adapted; the rotating assembly drives the rack and the gear mechanism through the first electric push rod body to drive the rotating shaft and the mounting plate to rotate stably, and 360-degree positioning of the valve is achieved.

Description

Technical Field

[0001] This invention belongs to the technical field of exhaust gas control valve support, specifically relating to a precise positioning support device for exhaust gas control valves. Background Technology

[0002] Exhaust gas control valves are key components used to regulate exhaust gas flow and control its path. They are widely used in automotive engine emission systems, turbocharger systems, and industrial exhaust gas treatment systems. Their performance directly affects emission compliance rates, equipment operating efficiency, and environmental safety. Exhaust gas control valves require maintenance or repair during daily use. When repairing exhaust gas control valves, workers need to use positioning support devices to support and position the disassembled valves.

[0003] Problems with existing technology:

[0004] 1. Traditional exhaust gas control valve positioning support tools are usually single-function, often only able to achieve fixation or height adjustment in a single dimension, lacking integrated and precise control capabilities for valve horizontal position, clamping distance, and rotation angle.

[0005] 2. Most exhaust gas control valve positioning support devices can only be used for valves of specific sizes. When encountering valves of different diameters and shapes, it is necessary to replace the clamps or the entire support, which has poor adaptability and increases equipment costs and storage management complexity. Summary of the Invention

[0006] The purpose of this invention is to provide a precise positioning support device for exhaust gas control valves, which can solve the problem that traditional exhaust gas control valve positioning support tools are usually single-function, often only able to achieve single-dimensional fixation or height adjustment, and lack integrated and precise control capabilities for valve horizontal position, clamping distance and rotation angle.

[0007] The specific technical solution adopted by this invention is as follows:

[0008] A precision positioning support device for an exhaust gas control valve includes a base plate. An adjustment assembly is mounted on the upper end of the base plate. The upper end of the adjustment assembly is fixedly connected to the lower end of a connecting plate. Two fixing plates are fixedly connected to the lower end of the connecting plate. An electric push rod body is fixedly mounted on the front of the fixing plate. A push-pull plate is fixedly connected to the rear end of the electric push rod body. A toothed plate is fixedly connected to the right end of the push-pull plate, meshing with a gear. The gear is fixedly connected to the lower end of a rotating shaft. The rotating shaft is movably connected to a connecting plate with an internal connection hole. A mounting plate is fixedly connected to the upper end of the rotating shaft. A drive assembly is mounted on the upper end of the mounting plate. Two mounting brackets are fixedly connected to the left and right sides of the upper end of the drive assembly. Valve clamps are mounted on the relatively close ends of the four mounting brackets.

[0009] The inner sides of the four valve clamps are provided with silicone pads. The push-pull plate is slidably connected to the limiting rod through the limiting hole opened inside it. The front and rear ends of the limiting rod are respectively fixedly connected to the relatively close ends of the two fixing plates. The mounting plate is movably connected to the overlapping plate with an annular groove opened inside the upper end through the annular slider provided at its lower end. Two telescopic sleeves are fixedly connected to the left and right sides of the lower end of the overlapping plate. The lower ends of the four telescopic sleeves are all fixedly connected to the base plate.

[0010] The adjustment assembly includes a dual-axis motor, which is fixedly mounted on the upper end of the base plate. The dual-axis motor is fixedly connected to the relatively close ends of two threaded rods through two output shafts provided thereon. The two threaded rods are respectively threadedly connected to two connecting frames, each with a threaded hole inside.

[0011] Both connecting frames are movably connected to the lower ends of four hinge plates via two fixed shafts. The upper ends of the four hinge plates are movably connected to two fixed rods. Fixed plates are fixedly connected to the front and rear ends of the two fixed rods. The upper ends of the four fixed plates are fixedly connected to the lower ends of the overlapping plate.

[0012] Both connecting frames are slidably connected to two limiting rods 2 through two limiting holes opened inside them. The left and right ends of the two limiting rods 2 are respectively fixedly connected to the relatively close ends of the two fixing plates 2. The two fixing plates 2 are respectively movably connected to the relatively far ends of the two threaded rods. The lower ends of the two fixing plates 2 are both fixedly connected to the base plate.

[0013] The drive assembly includes two electric push rod bodies, both of which are fixedly mounted on the upper end of the mounting plate, and push-pull brackets are fixedly connected to the relatively close ends of the two electric push rod bodies.

[0014] Two guide rods are fixedly connected to the left and right ends of the two push-pull brackets. The eight guide rods are divided into four groups and are slidably connected to four mounting platforms, each with two guide holes. The upper ends of the four mounting platforms are fixedly connected to the lower ends of the four mounting brackets. Support sliders are fixedly connected to the lower ends of the four mounting platforms.

[0015] The four supporting sliders are slidably connected to the two guide rods four respectively. A push-pull plate two is fixedly connected to the middle position of the two guide rods four. An electric push rod body three is fixedly connected to the relatively far ends of the two push-pull plates two.

[0016] Both of the electric push rod bodies are fixedly installed on the upper end of the mounting plate. Both the front and rear ends of the two guide rods are fixedly connected with sleeves. The four sleeves are slidably connected to the two guide rods. Both the left and right ends of the two guide rods are fixedly connected with support plates.

[0017] The lower ends of the four support plates are fixedly connected to the mounting plate. The eight guide rods are divided into four groups, and their relatively far ends are fixedly connected to the four sleeves. The four sleeves are slidably connected to the two guide rods. The front and rear ends of the two guide rods are fixedly connected to the support plates. The lower ends of the four support plates are fixedly connected to the mounting plate.

[0018] The technical effects achieved by this invention are as follows:

[0019] 1. This invention integrates multiple adjustment functions for height, horizontal spacing, and rotation angle. For example, the adjustment component uses a scissor-type lifting mechanism composed of a dual-axis motor, threaded rod, and hinge plate to achieve stepless adjustment and high stability of the support height; the drive component, through electric push rod body two and electric push rod body three, in conjunction with guide rod and slider mechanism, achieves independent and precise control of the valve's front and rear clamping and left and right spacing, and can quickly adapt to valves of different specifications; the rotation component, through electric push rod body one driving rack and gear mechanism, drives the rotating shaft and mounting plate to rotate smoothly, achieving 360° angular positioning of the valve. These integrated designs enable operators to quickly and accurately fix the valve in any required spatial position and posture, avoiding the inconvenience and safety hazards of traditional hoisting or manual support, providing optimal working conditions for comprehensive inspection, repair, or replacement of all parts of the valve, thereby significantly shortening maintenance time and ensuring the precision of maintenance operations.

[0020] 2. The functional components of this invention adopt a modular design and a collaborative driving principle. Each motion pair is equipped with a guiding and limiting mechanism to ensure smooth and precise overall operation. For example, the push-pull plate is guided by limiting rod one to prevent misalignment of the rack and gear meshing; the connecting frame is limited by limiting rod two to ensure linear movement under the drive of the threaded rod, thus accurately converting into the vertical lifting and lowering of the overlapping plate; the movement of the mounting platform is constrained by multiple guiding systems, including guide rods one to four, sleeves, and support sliders, ensuring the centering and non-offset movement of the valve clamping plate during clamping. Furthermore, the silicone pads on the inner side of the valve clamping plate provide cushioning and anti-slip properties, preventing damage to the valve surface from the clamping force. This design, using a motor and electric push rod as the power source, a precision mechanical transmission mechanism as the core, and supplemented by all-round guiding, limiting, and flexible protection, constitutes a high-rigidity, low-vibration positioning support system. This not only ensures the positional accuracy of the valve during adjustment and fixing but also greatly enhances the structural stability and operational safety of the entire device under load, extending the device's service life. Attached Figure Description

[0021] Figure 1 This is a front-view stereoscopic structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the right-view stereoscopic structure in this invention;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure in right cross-section of the present invention;

[0024] Figure 4 This is a bottom-view three-dimensional structural diagram of the overlapping plate in this invention;

[0025] Figure 5 This is a left-view stereoscopic structural diagram of the adjustment component in this invention;

[0026] Figure 6 This is a front-view stereoscopic structural diagram of the driving component in this invention;

[0027] Figure 7 This is a three-dimensional structural diagram of the driving component in this invention, viewed from below.

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 1. Base plate; 2. Telescopic sleeve; 3. Mounting plate; 4. Adjustment assembly; 41. Fixing plate two; 42. Threaded rod; 43. Limiting rod two; 44. Connecting frame; 45. Hinge plate; 46. Dual-axis motor; 47. Fixing rod; 48. Fixing plate three; 5. Drive assembly; 51. Support plate one; 52. Support plate two; 53. Guide rod one; 54. Sleeve one; 55. Support slider; 56. Guide rod two; 57. 58. Electric push rod body 2; 59. Push-pull bracket; 50. Sleeve 2; 510. Mounting platform; 511. Guide rod 3; 512. Guide rod 4; 513. Electric push rod body 3; 514. Push-pull plate 2; 6. Mounting frame; 7. Valve clamp; 8. Electric push rod body 1; 9. Overlap plate; 10. Gear; 11. Rotating shaft; 12. Gear plate; 13. Fixing plate 1; 14. Limiting rod 1; 15. Push-pull plate 1. Detailed Implementation

[0030] To make the objectives and advantages of this invention clearer, the invention will be specifically described below with reference to embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of the invention and does not strictly limit the scope of protection specifically claimed by the invention.

[0031] like Figure 1-7As shown, a precise positioning support device for an exhaust gas control valve includes a base plate 1. An adjustment component 4 is mounted on the upper end of the base plate 1. The upper end of the adjustment component 4 is fixedly connected to the lower end of an overlapping plate 9. Two fixing plates 13 are fixedly connected to the lower end of the overlapping plate 9. An electric push rod body 8 is fixedly mounted on the front fixing plate 13. A push-pull plate 15 is fixedly connected to the rear end of the electric push rod body 8. A toothed plate 12 is fixedly connected to the right end of the push-pull plate 15. The toothed plate 12 meshes with a gear 10. The gear 10 is fixedly connected to the lower end of a rotating shaft 11. The rotating shaft 11 is movably connected to the overlapping plate 9, which has a connecting hole inside. A mounting plate 3 is fixedly connected to the upper end of the rotating shaft 11. A drive component 5 is mounted on the upper end of the mounting plate 3. Two mounting brackets 6 are fixedly connected to the left and right sides of the upper end of the drive component 5. Valve clamps 7 are mounted on the relatively close ends of the four mounting brackets 6. The drive component 5 can drive the corresponding two mounting brackets 6 on the front and rear sides to move together. The valves are brought closer together, and under the action of the four valve clamps 7, the exhaust gas control valve can be clamped and fixed, thus achieving the positioning and support of the exhaust gas control valve. The electric push rod body 8 drives the push-pull plate 15 to move in the front and back direction. With the cooperation of the toothed plate 12 and gear 10, the rotating shaft 11 can be rotated. The rotation of the rotating shaft 11 drives the mounting plate 3 to rotate. With the cooperation of the drive component 5, mounting frame 6 and valve clamps 7, the supported and fixed exhaust gas control valve can be rotated, which facilitates the maintenance of the exhaust gas control valve from different angles. The adjustment component 4 drives the overlapping plate 9 to move upward. With the cooperation of the mounting plate 3, drive component 5, mounting frame 6 and valve clamps 7, the support position height of the exhaust gas control valve can be adjusted according to the needs of the maintenance process.

[0032] Furthermore, silicone pads are provided on the inner sides of the four valve clamps 7. The push-pull plate 15 is slidably connected to the limiting rod 14 through the limiting hole opened inside it. The front and rear ends of the limiting rod 14 are fixedly connected to the relatively close ends of the two fixed plates 13 respectively. The mounting plate 3 is movably connected to the overlapping plate 9 with an annular groove opened inside the upper end through the annular slider set at its lower end. Two telescopic sleeves 2 are fixedly connected to the left and right sides of the lower end of the overlapping plate 9. The lower ends of the four telescopic sleeves 2 are fixedly connected to the base plate 1. The combination of the limiting rod 14 and the fixed plate 13 can limit the movement direction of the push-pull plate 15. The telescopic sleeves 2 can increase the stability of the overlapping plate 9 during the up and down movement.

[0033] Furthermore, the adjustment assembly 4 includes a dual-axis motor 46, which is fixedly mounted on the upper end of the base plate 1. The dual-axis motor 46 is fixedly connected to the relatively close ends of two threaded rods 42 via two output shafts. The two threaded rods 42 are threadedly connected to two connecting frames 44, each with a threaded hole inside. The two connecting frames 44 are movably connected to the lower ends of four hinge plates 45 via two fixed shafts. The upper ends of the four hinge plates 45 are movably connected to two fixed rods 47. Fixed plates 3 48 are fixedly connected to the front and rear ends of the two fixed rods 47. The upper ends of the four fixed plates 3 48 are fixedly connected to the lower end of the overlapping plate 9. The two connecting frames 44 are slidably connected to two limiting rods 2 43 via two limiting holes inside. The left and right ends of the two limiting rods 2 43 are fixed to the relatively close ends of the two fixed plates 2 41. The connection consists of two fixed plates 41, which are movably connected to the relatively distant ends of two threaded rods 42. The lower ends of the two fixed plates 41 are fixedly connected to the base plate 1. The mutual cooperation between the fixed plates 41 and the limiting rods 43 restricts the movement direction of the connecting frame 44. The rotation of the output shaft of the dual-axis motor 46 drives the two threaded rods 42 to rotate, and under the action of the limiting rods 43, the two connecting frames 44 can move closer to each other. During the process of moving the two connecting frames 44 closer to each other, the cooperation of the hinge plate 45, the fixed rod 47, and the fixed plate 48 can achieve the effect of moving the overlapping plate 9 upward. Then, with the cooperation of the mounting plate 3, the drive assembly 5, the mounting frame 6, and the valve clamp 7, the position height of the exhaust gas control valve can be adjusted during the positioning and support process.

[0034] The drive assembly 5 includes two electric push rod bodies 57, both of which are fixedly mounted on the upper end of the mounting plate 3. Push-pull brackets 58 are fixedly connected to the relatively close ends of the two electric push rod bodies 57. Two guide rods 56 are fixedly connected to the left and right ends of the two push-pull brackets 58. The eight guide rods 56 are divided into four groups and are slidably connected to four mounting platforms 510, each with two guide holes. The upper ends of the four mounting platforms 510 are fixedly connected to the lower ends of four mounting brackets 6. Support sliders 55 are fixedly connected to the lower ends of the four mounting platforms 510. The four support sliders 55 are slidably connected to two guide rods 512. The middle positions of the two guide rods 512 are fixedly connected to... A push-pull plate 514 is fixedly connected to the two push-pull plates 514. Electric push rod bodies 513 are fixedly connected to the relatively far ends of the two push-pull plates 514. Both electric push rod bodies 513 are fixedly mounted on the upper end of the mounting plate 3. Sleeves 54 are fixedly connected to the front and rear ends of the two guide rods 512. The four sleeves 54 are slidably connected to the two guide rods 53. Support plates 51 are fixedly connected to the left and right ends of the two guide rods 53. The lower ends of the four support plates 51 are fixedly connected to the mounting plate 3. Eight guide rods 56 are divided into four groups, with their relatively far ends fixedly connected to four sleeves 59. The four sleeves 59 are slidably connected to two guide rods 511. The front and rear ends of the two guide rods 511 are fixedly connected to the four sleeves 59. Both ends are fixedly connected to support plates 52, and the lower ends of the four support plates 52 are fixedly connected to the mounting plate 3. The cooperation of the support plates 52, sleeves 59, and guide rods 56 restricts the movement direction of the push-pull bracket 58. The cooperation of sleeves 59, guide rods 56, guide rods 511, and support plates 52 restricts the movement direction of the mounting platform 510. Two electric push rods 57 drive the two push-pull brackets 58 closer together, and with the cooperation of guide rods 56, sleeves 59, and guide rods 511, the corresponding mounting platforms 510 on the front and rear sides move closer together. During this process, the exhaust gas control valve can be clamped and fixed with the cooperation of the mounting bracket 6 and the valve clamp 7, thereby achieving the positioning and support effect of the exhaust gas control valve, which facilitates the maintenance of the exhaust gas control valve. The two electric push rods 513 drive the two push-pull plates 514 to move relative to each other. Then, with the cooperation of the guide rod 512, the support slider 55, the sleeve 54 and the guide rod 53, the two corresponding mounting platforms 510 on the left and right sides can move relative to each other. Then, with the cooperation of the mounting bracket 6, the distance between the two corresponding valve clamps 7 on the left and right sides can be adjusted, so as to adapt to exhaust gas control valves of different specifications.

[0035] The working principle of this invention is as follows:

[0036] When using this device to position and support the exhaust gas control valve for easy maintenance, firstly, according to the different specifications of the exhaust gas control valve, the two electric push rods 513 are activated to move the two push-pull plates 514 relative to each other. Then, with the cooperation of the guide rod 512, support slider 55, sleeve 54, guide rod 53, mounting platform 510 and mounting bracket 6, the two valve clamps 7 on the left and right sides can be moved relative to each other, thereby adjusting the distance between the two valve clamps 7 on the left and right sides. After the adjustment is completed, the left and right sides of the exhaust gas control valve are placed between the two valve clamps 7 on the front and rear sides respectively. Then, the two synchronous electric push rods 57 are activated to move the two push-pull brackets 58 relative to each other. Then, with the cooperation of the guide rod 56, sleeve 59, guide rod 511, mounting platform 510 and mounting bracket 6, the two valve clamps 7 on the front and rear sides can be moved closer to each other, achieving clamping and fixing of the exhaust gas control valve, thereby achieving the positioning and support effect of the exhaust gas control valve.

[0037] During the positioning and support of the exhaust gas control valve, when it is necessary to adjust the orientation angle of the exhaust gas control valve according to the maintenance situation, the electric push rod body 8 is activated to drive the push-pull plate 15 to move in the back-and-forth direction. In turn, with the cooperation of the toothed plate 12 and the gear 10, the rotating shaft 11 can be driven to rotate. The rotation of the rotating shaft 11, with the cooperation of the mounting plate 3, the drive assembly 5, the mounting bracket 6 and the valve clamp 7, can drive the exhaust gas control valve to rotate, thereby realizing the adjustment of the orientation angle of the exhaust gas control valve. This allows the operator to inspect the exhaust gas control valve from multiple angles. During maintenance, when it is necessary to adjust the support height of the exhaust gas control valve, the dual-shaft motor 46 is started to drive the two threaded rods 42 to rotate. Then, under the action of the second limiting rod 43, the two connecting frames 44 can move relative to each other. Then, with the cooperation of the hinge plate 45, the fixing rod 47 and the third fixing plate 48, the overlapping plate 9 can be moved upward. At this time, with the cooperation of the mounting plate 3, the drive assembly 5, the mounting frame 6 and the valve clamp 7, the exhaust gas control valve can be moved upward, thereby realizing the adjustment of the support height of the exhaust gas control valve.

[0038] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. A precision positioning support device for an exhaust gas control valve, comprising a base plate (1), characterized in that: An adjustment component (4) is provided at the upper end of the base plate (1). The upper end of the adjustment component (4) is fixedly connected to the lower end of the overlapping plate (9). Two fixing plates (13) are fixedly connected to the lower end of the overlapping plate (9). An electric push rod body (8) is fixedly installed on the front fixing plate (13). A push-pull plate (15) is fixedly connected to the rear end of the electric push rod body (8). A toothed plate (12) is fixedly connected to the right end of the push-pull plate (15). The gear (10) meshes with the gear (10), and the gear (10) is fixedly connected to the lower end of the shaft (11). The shaft (11) is movably connected to the overlapping plate (9) with a connection hole inside. The upper end of the shaft (11) is fixedly connected to the mounting plate (3). The upper end of the mounting plate (3) is provided with a drive assembly (5). The upper left and right sides of the drive assembly (5) are fixedly connected to two mounting brackets (6). The four mounting brackets (6) are provided with valve clamps (7) at their relatively close ends.

2. The precise positioning support device for an exhaust gas control valve according to claim 1, characterized in that: The inner sides of the four valve clamps (7) are provided with silicone pads. The push-pull plate (15) is slidably connected to the limiting rod (14) through the limiting hole opened inside it. The front and rear ends of the limiting rod (14) are respectively fixedly connected to the relatively close ends of the two fixing plates (13). The mounting plate (3) is movably connected to the overlapping plate (9) with an annular groove opened inside the upper end through the annular slider provided at its lower end. Two telescopic sleeves (2) are fixedly connected to the left and right sides of the lower end of the overlapping plate (9). The lower ends of the four telescopic sleeves (2) are fixedly connected to the base plate (1).

3. The precise positioning support device for an exhaust gas control valve according to claim 1, characterized in that: The adjustment component (4) includes a dual-axis motor (46), which is fixedly installed on the upper end of the base plate (1). The dual-axis motor (46) is fixedly connected to the relatively close ends of two threaded rods (42) through two output shafts provided on it. The two threaded rods (42) are respectively threadedly connected to two connecting frames (44) with threaded holes inside.

4. The precise positioning support device for an exhaust gas control valve according to claim 3, characterized in that: Both of the connecting frames (44) are movably connected to the lower ends of the four hinge plates (45) respectively through two fixed shafts provided thereon. The upper ends of the four hinge plates (45) are movably connected to two fixed rods (47) respectively. Fixed plates (48) are fixedly connected to the front and rear ends of the two fixed rods (47). The upper ends of the four fixed plates (48) are fixedly connected to the lower end of the overlapping plate (9).

5. The precise positioning support device for an exhaust gas control valve according to claim 4, characterized in that: Both connecting frames (44) are slidably connected to two limiting rods (43) through two limiting holes inside them. The left and right ends of the two limiting rods (43) are fixedly connected to the relatively close ends of the two fixing plates (41), and the two fixing plates (41) are movably connected to the relatively far ends of the two threaded rods (42). The lower ends of the two fixing plates (41) are fixedly connected to the base plate (1).

6. The precise positioning support device for an exhaust gas control valve according to claim 1, characterized in that: The drive assembly (5) includes two electric push rod bodies (57), both of which are fixedly installed on the upper end of the mounting plate (3), and push-pull brackets (58) are fixedly connected to the relatively close ends of the two electric push rod bodies (57).

7. The precise positioning support device for an exhaust gas control valve according to claim 6, characterized in that: Two guide rods (56) are fixedly connected to the left and right ends of the two push-pull brackets (58). The eight guide rods (56) are divided into four groups and are slidably connected to four mounting platforms (510) with two guide holes in each. The upper ends of the four mounting platforms (510) are fixedly connected to the lower ends of the four mounting brackets (6). The lower ends of the four mounting platforms (510) are fixedly connected to support sliders (55).

8. The precise positioning support device for an exhaust gas control valve according to claim 7, characterized in that: The four support sliders (55) are slidably connected to the two guide rods (512) respectively. The two guide rods (512) are fixedly connected to the middle position of the two push-pull plates (514). The electric push rod body (513) is fixedly connected to the relatively far ends of the two push-pull plates (514).

9. The precise positioning support device for an exhaust gas control valve according to claim 8, characterized in that: Both of the electric push rod bodies three (513) are fixedly installed on the upper end of the mounting plate (3). Both the front and rear ends of the two guide rods four (512) are fixedly connected to sleeves one (54). The four sleeves one (54) are slidably connected to the two guide rods one (53) respectively. Both the left and right ends of the two guide rods one (53) are fixedly connected to support plates one (51).

10. The precise positioning support device for an exhaust gas control valve according to claim 9, characterized in that: The lower ends of the four support plates (51) are fixedly connected to the mounting plate (3). The eight guide rods (56) are divided into four groups, and their relatively far ends are fixedly connected to the four sleeves (59). The four sleeves (59) are slidably connected to the two guide rods (511). The front and rear ends of the two guide rods (511) are fixedly connected to the support plates (52). The lower ends of the four support plates (52) are fixedly connected to the mounting plate (3).

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