Valve plate gap measuring machine

Abstract

The utility model relates to the technical field of EGR valves, in particular to a valve plate gap measuring machine. According to the technical scheme, the valve block gap measuring machine comprises a bottom plate, a valve block, a valve body and a fixing frame, the valve block is rotationally installed in the valve body, a support is arranged on the bottom plate, a threaded rod is rotationally installed on the bottom plate through the support, a connecting shaft is arranged in the middle of the threaded rod, and the connecting shaft is connected with the valve block. A fixing frame is slidably mounted on the bottom plate through a threaded rod, a roller is rotatably mounted at one end of the fixing frame, the bottom plate is supported and mounted in the valve body through the roller, and a distance measuring sensor is mounted on the lower surface of the bottom plate. The device is simple in structure, facilitates the rapid measurement of the gap between the valve plates, and improves the press-fitting efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of EGR valves, in particular to a valve sheet clearance measuring machine. Background Art

[0002] The EGR valve, also known as the exhaust gas recirculation valve, is a mechatronic device installed on a diesel engine to control the amount of exhaust gas recirculation fed back to the intake system. When assembling the EGR valve assembly, the valve plate needs to be placed in the valve body, and then the through bushing and blind bushing are pressed from both sides of the valve body. The two ends of the valve plate are supported on the through bushing and blind bushing respectively, and then the cylindrical pin is installed from the outside of the valve body to achieve the fixed connection between the two bushings and the valve body. The traditional pressing method is: place the valve body horizontally so that the bushing mounting hole on one side faces upward, and press the first bushing vertically downward through the pressing mechanism; then, turn the valve body 180° so that the bushing mounting hole on the other side faces upward, and press the second bushing vertically downward through the pressing mechanism; at this time, the valve plate in the valve body is clamped and fixed by the bushings on both sides; then, turn the valve body 90° so that the upper pin mounting holes on both sides face upward, press the cylindrical pin through the pressing mechanism, and fix the bushing with the cylindrical pin. The traditional press-fitting method requires the valve body to be turned over many times, and after each turn of the valve body, the valve body needs to be repositioned using a positioning tool. This is not only cumbersome and inconvenient to operate, but also not conducive to improving the press-fitting efficiency. Utility Model Content

[0003] The utility model provides a valve plate gap measuring machine, which solves the above-mentioned technical problems.

[0004] The utility model solves the above-mentioned technical problems as follows:

[0005] A valve plate gap measuring machine comprises a base plate, a valve plate, a valve body and a fixing frame, wherein the valve plate is rotatably mounted inside the valve body, a bracket is provided on the base plate, a threaded rod is rotatably mounted on the base plate via the bracket, a connecting shaft is provided in the middle of the threaded rod, a fixing frame is slidably mounted on the base plate via the threaded rod, a roller is rotatably mounted on one end of the fixing frame, the base plate is mounted in the valve body via the roller support, and a distance measuring sensor is mounted on the lower surface of the base plate.

[0006] On the basis of the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, a limiting shaft is provided on the fixing frame, and the roller is rotatably mounted on the fixing frame via the limiting shaft.

[0008] Furthermore, there are three ranging sensors in total, one of which is perpendicular to the bottom plate, and the other two ranging sensors are rotatably installed on both sides of the ranging sensor in the middle through a rotating frame.

[0009] Furthermore, the pin shaft of the rotating frame is connected and fixed to a servo motor, and the servo motor drives the distance measuring sensor to turn.

[0010] Furthermore, there are two fixing frames in total, and the two fixing frames are symmetrically distributed on the bottom plate.

[0011] Furthermore, the threaded rod is movably connected to the fixing frame via threads.

[0012] Furthermore, rotating shafts are provided at both ends of the valve plate, and the valve plate is rotatably installed in the valve body via the rotating shafts.

[0013] The beneficial effect of the utility model is that when in use, the user puts the bottom plate into the valve body, and then the user rotates the connecting shaft to make the connecting shaft drive the threaded rod to rotate, and then the fixing frame moves toward the two ends of the base through the principle of the screw rod and nut, and then the bottom plate is fixed in the valve body through the roller support on the fixing frame, and through the supporting effect of the roller, the distance measuring sensor at the bottom end of the bottom plate is located on the center line of the valve body, and then the user adjusts the angle of the distance measuring sensor on the rotating frame through the servo motor, so that the distance measuring sensor on the rotating frame measures the inner diameter of the valve body, and then adjusts the angle of the distance measuring sensor on the rotating frame again through the servo motor, so that the distance measuring sensor on the rotating frame is aligned with the edge of the valve plate, and then the distance measured by the distance measuring sensor and the rotation angle of the servo motor are brought into the trigonometric function to calculate the diameter of the valve plate, and then the valve plate gap is obtained by calculating the difference between the valve body diameter and the valve plate diameter.

[0014] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the utility model with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide further understanding of the present invention and constitute a part of the present application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0016] In the attached picture:

[0017] Figure 1 This is a schematic diagram of the top view of the utility model;

[0018] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the front appearance of the utility model in an expanded state.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1. Bracket; 2. Rotating shaft; 3. Bottom plate; 4. Valve plate; 5. Limiting shaft; 6. Roller; 7. Valve body; 8. Threaded rod; 9. Connecting shaft; 10. Servo motor; 11. Fixed bracket; 12. Rotating bracket; 13. Distance measuring sensor. DETAILED DESCRIPTION

[0022] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0023] See also Figures 1 to 3 As shown, the embodiments provided by the utility model:

[0024] Embodiment 1

[0025] A valve plate gap measuring machine includes a bottom plate 3, a valve plate 4, a valve body 7 and a fixing frame 11. The valve plate 4 is rotatably installed inside the valve body 7. Both ends of the valve plate 4 are provided with rotating shafts 2. The valve plate 4 is rotatably installed in the valve body 7 through the rotating shafts 2. A bracket 1 is provided on the bottom plate 3. A threaded rod 8 is rotatably installed on the bottom plate 3 through the bracket 1. The threaded rod 8 is movably connected to the fixing frame 11 through threads. A connecting shaft 9 is provided in the middle of the threaded rod 8. The fixing frame 11 is slidably installed on the bottom plate 3 through the threaded rod 8.

[0026] There are two fixing frames 11 in total, and the two fixing frames 11 are symmetrically distributed on the bottom plate 3. A roller 6 is rotatably installed at one end of the fixing frame 11. A limit shaft 5 is provided on the fixing frame 11. The roller 6 is rotatably installed on the fixing frame 11 through the limit shaft 5. The bottom plate 3 is supported and installed in the valve body 7 through the roller 6. A distance sensor 13 is installed on the lower surface of the bottom plate 3. There are three distance sensors 13 in total, one of which is perpendicular to the bottom plate 3, and the other two distance sensors 13 are rotatably installed on both sides of the distance sensor 13 in the middle through the rotating frame 12. The user puts the bottom plate 3 into the valve body 7, and then the user rotates the connecting shaft 9 to make the connecting shaft 9 drive the threaded rod 8 to rotate, so that the fixing frame 11 moves to both ends of the base through the screw rod and nut principle, so that the bottom plate 3 is supported and fixed by the roller 6 on the fixing frame 11. In the valve body 7, and through the supporting effect of the roller 6, the distance sensor 13 at the bottom end of the bottom plate 3 is located on the center line of the valve body 7, and then the user adjusts the angle of the distance sensor 13 on the rotating frame 12 through the servo motor 10, so that the distance sensor 13 on the rotating frame 12 measures the inner diameter of the valve body 7, and then adjusts the angle of the distance sensor 13 on the rotating frame 12 through the servo motor 10 again, so that the distance sensor 13 on the rotating frame 12 is aligned with the edge of the valve plate 4, and then the distance measured by the distance sensor 13 and the rotation angle of the servo motor 10 are substituted into the trigonometric function to calculate the diameter of the valve plate 4, and then the gap of the valve plate 4 is obtained by calculating the difference between the diameter of the valve body 7 and the diameter of the valve plate 4, and the pin shaft of the rotating frame 12 is connected and fixed to the servo motor 10, and the distance sensor 13 is driven by the servo motor 10 to turn.

[0027] When a valve plate gap measuring machine based on Example 1 is used: the user puts the bottom plate 3 into the valve body 7, and then the user rotates the connecting shaft 9 so that the connecting shaft 9 drives the threaded rod 8 to rotate, and then the fixing frame 11 moves to the two ends of the base through the screw nut principle, and then the bottom plate 3 is supported and fixed in the valve body 7 by the roller 6 on the fixing frame 11, and through the supporting effect of the roller 6, the distance sensor 13 at the bottom end of the bottom plate 3 is located on the center line of the valve body 7, and then the user adjusts the angle of the distance sensor 13 on the rotating frame 12 through the servo motor 10, so that the distance sensor 13 on the rotating frame 12 measures the inner diameter of the valve body 7, and then adjusts the angle of the distance sensor 13 on the rotating frame 12 through the servo motor 10 again, so that the distance sensor 13 on the rotating frame 12 is aligned with the edge of the valve plate 4, and then the distance measured by the distance sensor 13 and the rotation angle of the servo motor 10 are substituted into the trigonometric function to calculate the diameter of the valve plate 4, and then the valve plate 4 gap is obtained by calculating the difference between the diameter of the valve body 7 and the diameter of the valve plate 4.

[0028] The above description is only a preferred embodiment of the utility model and does not impose any form of limitation on the utility model. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A valve clearance measuring machine, characterized in that: The invention comprises a bottom plate (3), a valve plate (4), a valve body (7) and a fixing frame (11), wherein the valve plate (4) is rotatably mounted inside the valve body (7), a bracket (1) is provided on the bottom plate (3), a threaded rod (8) is rotatably mounted on the bottom plate (3) via the bracket (1), a connecting shaft (9) is provided at the middle of the threaded rod (8), a fixing frame (11) is slidably mounted on the bottom plate (3) via the threaded rod (8), a roller (6) is rotatably mounted on one end of the fixing frame (11), the bottom plate (3) is supported and mounted in the valve body (7) via the roller (6), and a distance measuring sensor (13) is mounted on the lower surface of the bottom plate (3).

2. A valve clearance measuring machine according to claim 1, characterized in that: The fixing frame (11) is provided with a limiting shaft (5), and the roller (6) is rotatably mounted on the fixing frame (11) via the limiting shaft (5).

3. The valve clearance measuring machine according to claim 1, characterized in that: There are three distance measuring sensors (13) in total, one of which is perpendicular to the bottom plate (3), and the other two are rotatably mounted on both sides of the distance measuring sensor (13) in the middle via a rotating frame (12).

4. A valve clearance measuring machine according to claim 3, characterized in that: The pin shaft of the rotating frame (12) is connected and fixed to the servo motor (10), and the distance measuring sensor (13) is driven by the servo motor (10) to turn.

5. The valve clearance measuring machine according to claim 1, characterized in that: There are two fixing frames (11) in total, and the two fixing frames (11) are symmetrically distributed on the bottom plate (3).

6. The valve clearance measuring machine according to claim 1, characterized in that: The threaded rod (8) is movably connected to the fixing frame (11) via threads.

7. The valve clearance measuring machine according to claim 1, characterized in that: Rotating shafts (2) are provided at both ends of the valve plate (4), and the valve plate (4) is rotatably mounted in the valve body (7) via the rotating shafts (2).

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