Gap adjusting mechanism for valve machining

Abstract

The utility model discloses a clearance adjusting mechanism for valve machining, which comprises a rocker arm shaft, a rocker arm is arranged on the rocker arm shaft, the other side of the rocker arm is positioned at the bottom of an adjusting nut, a connecting seat is fixedly connected to one side of the adjusting nut, a valve top cover is arranged on one side of the rocker arm, and a mounting seat is fixedly connected to one end of the valve top cover. A magnifying lens is arranged at the top of the mounting seat and located on one side of the rocker arm, a magnifying lens is arranged at one end of the valve top cover, an adjusting graduated scale is arranged at one end of the magnifying lens, a pointer is arranged on one side of the rocker arm and corresponds to scale marks on the adjusting graduated scale in position, and a push rod top seat is arranged on the other side of the rocker arm and provided with a fine adjustment screw. An adjusting nut is connected to the outer wall of the fine adjustment screw, a fixing frame is fixed to the outer wall of the fine adjustment screw, and an upper inserting rod and a lower inserting rod are inserted into one side of the adjusting nut and one side of the fixing frame respectively. According to the device, the precision of manually adjusting the valve clearance can be improved, and meanwhile, the efficiency of adjusting the valve clearance is also improved.

Description

Technical Field

[0001] This utility model relates to the field of valve processing technology, specifically to a valve processing clearance adjustment mechanism. Background Technology

[0002] Valve machining refers to the manufacturing and finishing process of engine valves to ensure that their accuracy and durability meet the engine's operating requirements. Valve plays a crucial role in internal combustion engines, controlling the intake and exhaust processes of the combustion chamber and directly affecting the engine's performance, efficiency, and emissions levels.

[0003] Currently, mechanical valve clearance adjustment structures typically consist of bolts, screws, and rocker arms. When valve clearance needs adjustment, the valve clearance is changed by adjusting the screw. During the adjustment process, a feeler gauge is required for manual measurement, which results in low adjustment efficiency. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this invention is to provide a valve clearance adjustment mechanism to solve the problem of low efficiency and accuracy of manual valve clearance adjustment mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a clearance adjustment mechanism for valve processing, comprising a rocker arm shaft, a rocker arm mounted on the rocker arm shaft, a valve top cover mounted on one side of the rocker arm, a magnifying glass mounted on one end of the valve top cover, an adjustment scale mounted on one end of the magnifying glass, a pointer mounted on one side of the rocker arm, the pointer corresponding to the scale line on the adjustment scale, a push rod top seat mounted on the other side of the rocker arm, a fine-tuning screw mounted on the push rod top seat, an adjusting nut connected to the outer wall of the fine-tuning screw, a fixing bracket fixed to the outer wall of the fine-tuning screw, and an upper insert rod and a lower insert rod respectively inserted into one side of the adjusting nut and the fixing bracket.

[0006] Preferably, one end of the valve top cover is fixedly connected to a mounting base, and a magnifying glass is provided on the top of the mounting base, with the magnifying glass located on one side of the rocker arm.

[0007] Preferably, the other side of the rocker arm is located at the bottom of the adjusting nut, and a connecting seat is fixedly connected to one side of the adjusting nut, with a blind hole on one side of the connecting seat.

[0008] Preferably, a blind hole is provided on one side of the fixing frame, and the blind hole structure of the fixing frame and the connecting seat is the same.

[0009] Preferably, the inner sides of both the upper and lower insert rods are provided with rectangular protrusions, which match the blind hole structure of the fixing frame and the connecting seat.

[0010] Preferably, one end of both the upper and lower insert rods is provided with a threaded hole, and an adjusting screw is connected inside the threaded hole.

[0011] Preferably, the adjusting screw is threadedly connected to both the upper and lower insert rods.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) This device can improve the accuracy of manual valve clearance adjustment, and also improve the efficiency of valve clearance adjustment.

[0014] (2) This device uses a fine-tuning screw with scale lines, which can be adjusted to a suitable height by the scale lines, thus improving the accuracy of the fine-tuning screw. At the same time, by setting an adjustment scale, magnifying glass and pointer between the rocker arm and the valve cover, the size of the gap between the rocker arm and the valve cover can be quickly observed after the fine-tuning screw is adjusted, making the observation more intuitive and improving the efficiency and accuracy of the adjustment.

[0015] (3) This device can limit the fine adjustment screw and the adjusting nut by inserting an upper rod and a lower rod on one side of the fine adjustment screw and the adjusting nut, so as to prevent the fine adjustment screw and the adjusting nut from rotating and loosening. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the clearance adjustment mechanism for valve processing according to the present invention;

[0017] Figure 2 This utility model relates to a clearance adjustment mechanism for valve processing. Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 This utility model relates to a clearance adjustment mechanism for valve processing. Figure 1 Enlarged view at point B in the middle;

[0019] Figure 4 This is a side view of the upper insert rod of a valve processing clearance adjustment mechanism according to the present invention.

[0020] In the diagram: 1. Rocker arm; 2. Valve top cover; 3. Rocker arm shaft; 4. Fine-tuning screw; 5. Mounting bracket; 6. Adjusting nut; 7. Push rod top seat; 8. Adjusting scale; 9. Magnifying glass; 10. Pointer; 11. Mounting base; 12. Upper insert rod; 13. Adjusting screw; 14. Lower insert rod; 15. Connecting seat. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 This utility model provides a technical solution: a clearance adjustment mechanism for valve processing, including a rocker arm shaft 3, a rocker arm 1 mounted on the rocker arm shaft 3, a valve top cover 2 mounted on one side of the rocker arm 1, a mounting base 11 fixedly connected to one end of the valve top cover 2, a magnifying glass 9 mounted on the top of the mounting base 11, the magnifying glass 9 being located on one side of the rocker arm 1. This structure uses the magnifying glass 9 to magnify the indication of the pointer 10 and the adjustment scale 8 for easier and more intuitive viewing. The other side of the rocker arm 1 is located at the bottom of the adjusting nut 6, a connecting seat 15 fixedly connected to one side of the adjusting nut 6, and a blind hole is provided on one side of the connecting seat 15. This structure, through the adjusting nut 6, can limit the movement of the other side of the rocker arm 1. A magnifying glass 9 is installed at one end of the valve top cover 2, and an adjusting scale 8 is installed at the other end of the magnifying glass 9. A pointer 10 is installed on one side of the rocker arm 1, and the pointer 10 corresponds to the scale line on the adjusting scale 8. A push rod top seat 7 is installed on the other side of the rocker arm 1, and a fine-tuning screw 4 is installed on the push rod top seat 7. An adjusting nut 6 is connected to the outer wall of the fine-tuning screw 4, and a fixing bracket 5 is fixed to the outer wall of the fine-tuning screw 4. A blind hole is opened on one side of the fixing bracket 5, and the structure of the blind hole of the fixing bracket 5 is the same as that of the connecting seat 15. This structure facilitates the insertion of the rod 12. The lower insert rod 14 is connected to the fixed bracket 5 and the connecting seat 15. The upper insert rod 12 and the lower insert rod 14 are respectively inserted into one side of the adjusting nut 6 and the fixed bracket 5. The valve clearance can be measured by adjusting the scale 8, and the pointer 10 indicates the scale position of the valve clearance. Rectangular protrusions are provided on the inner sides of both the upper insert rod 12 and the lower insert rod 14. These rectangular protrusions match the blind hole structure of the fixed bracket 5 and the connecting seat 15. This structure, by inserting the inner protrusions of the upper insert rod 12 and the lower insert rod 14 into the fixed bracket 5 and the connecting seat 15, can limit the rotation of the fine-tuning screw 4 and the adjusting nut 6. Both rod 12 and lower insertion rod 14 have threaded holes at one end, and an adjusting screw 13 is connected inside the threaded holes. This structure facilitates the connection of the adjusting screw 13 with the upper insertion rod 12 and lower insertion rod 14. The adjusting screw 13 forms a threaded connection with both the upper insertion rod 12 and lower insertion rod 14. This structure allows the spacing between the upper insertion rod 12 and lower insertion rod 14 to be adjusted by rotating the adjusting screw 13, ensuring that the upper insertion rod 12 and lower insertion rod 14 can be connected to the fine-tuning screw 4 and adjusting nut 6 after adjustment by the fine-tuning screw 4, thus ensuring that the upper insertion rod 12 and lower insertion rod 14 restrict the rotation of the fine-tuning screw 4 and adjusting nut 6.

[0023] Working principle: When using this valve clearance adjustment mechanism, first pull out the upper insert rod 12 and lower insert rod 14 from one side of the fine-tuning screw 4 and adjusting nut 6. Then, fix the adjusting nut 6 with a tool wrench, and use another tool wrench to rotate the fine-tuning screw 4 for adjustment. During the adjustment of the fine-tuning screw 4, the valve clearance between the bottom side of the rocker arm 1 and the valve top cover 2 changes. As the height of one side of the rocker arm 1 changes, the position of the pointer 10 on the bottom side of the rocker arm 1 adjusts, indicating the position of different scale lines on the adjustment scale 8. The operator can quickly adjust the valve clearance by observing the adjustment scale 8 and pointer 10 displayed on the magnifying glass 9. After the valve clearance is adjusted, use the upper insert rod 12 and lower insert rod 14 to insert into the fine-tuning screw 4 and adjusting nut 6, thereby limiting the fine-tuning screw 4 and adjusting nut 6 to prevent loosening.

[0024] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A clearance adjustment mechanism for valve processing, comprising a rocker arm shaft (3), wherein a rocker arm (1) is disposed on the rocker arm shaft (3), characterized in that: A valve top cover (2) is provided on one side of the rocker arm (1), a magnifying glass (9) is provided at one end of the valve top cover (2), an adjusting scale (8) is provided at one end of the magnifying glass (9), a pointer (10) is provided on one side of the rocker arm (1), the pointer (10) corresponds to the scale line on the adjusting scale (8), a push rod top seat (7) is provided on the other side of the rocker arm (1), a fine adjustment screw (4) is provided on the push rod top seat (7), an adjusting nut (6) is connected to the outer wall of the fine adjustment screw (4), a fixing bracket (5) is fixed to the outer wall of the fine adjustment screw (4), and an upper insert rod (12) and a lower insert rod (14) are respectively inserted on one side of the adjusting nut (6) and the fixing bracket (5).

2. The clearance adjustment mechanism for valve processing according to claim 1, characterized in that: One end of the valve top cover (2) is fixedly connected to a mounting base (11), and a magnifying glass (9) is provided on the top of the mounting base (11). The magnifying glass (9) is located on one side of the rocker arm (1).

3. The clearance adjustment mechanism for valve processing according to claim 2, characterized in that: The other side of the rocker arm (1) is located at the bottom of the adjusting nut (6). A connecting seat (15) is fixedly connected to one side of the adjusting nut (6), and a blind hole is provided on one side of the connecting seat (15).

4. The clearance adjustment mechanism for valve processing according to claim 3, characterized in that: The fixing frame (5) has a blind hole on one side, and the blind hole structure of the fixing frame (5) is the same as that of the connecting seat (15).

5. The clearance adjustment mechanism for valve processing according to claim 4, characterized in that: The inner sides of the upper insertion rod (12) and the lower insertion rod (14) are provided with rectangular protrusions, which are matched with the blind hole structure of the fixing frame (5) and the connecting seat (15).

6. The clearance adjustment mechanism for valve processing according to claim 1, characterized in that: Both the upper insertion rod (12) and the lower insertion rod (14) have threaded holes at one end, and an adjusting screw (13) is connected inside the threaded holes.

7. The clearance adjustment mechanism for valve processing according to claim 6, characterized in that: The adjusting screw (13) is threadedly connected to the upper insert (12) and the lower insert (14).

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