Engine valve clearance adjusting device

Abstract

The utility model discloses an engine valve clearance adjusting device, which belongs to the field of valve clearance adjustment and comprises a fixing block, a rotating shaft, a corner character disc arranged on the periphery of the upper portion of the rotating shaft and a pointer arranged at the upper end of the rotating shaft through a fixing cap. One end of the pointer is fixed on a fixed block, the other side of the fixed block is provided with a flexible shaft capable of driving the pointer to rotate, and the end part of the flexible shaft is provided with a magnet; the lower part of the rotating shaft penetrates out of the corner character disc; the rotating shaft is driven to rotate by rotating the corner character disc with a hand, meanwhile, the pointer is kept still, and the rotating angle of the corner character disc is accurately controlled according to the angle pointed by the pointer. In the maintenance process of the engine, when the valve clearance of the engine needs to be adjusted, the valve clearance of the engine can be rapidly and accurately adjusted, the experience of operators is not needed, and repeated measurement is not needed.

Description

TECHNICAL FIELD

[0001] The utility model relates to an engine technical field especially an engine valve clearance adjusting device. BACKGROUND

[0002] When the engine works, the valve will expand due to the temperature rise, if there is no gap or the gap is too small between the valve and its transmission part in the cold state, the heated expansion of the valve and its transmission part will lead to the valve closing not tightly, causing the engine to leak in the compression stroke and the working stroke, thereby the power is reduced, and the engine cannot start in serious cases, and even the valve hits the piston, if the gap between the valve and its transmission part is too large in the cold state, it will cause the power to be reduced, the impact of the valve train parts is increased, and the wear is accelerated, in order to eliminate this phenomenon, a certain gap is left in the valve and its transmission part during the engine cold assembly, so as to compensate the expansion amount of the valve after being heated.

[0003] After the engine runs for a period of time, the valve clearance will be increased due to the friction between the valve and its transmission part, therefore, the engine needs to be checked for the valve clearance after running for a period of time, and adjusted if necessary, so as to keep the engine in good performance and improve its reliability.

[0004] At present, most of the methods for adjusting the valve clearance of the engine are by means of a plug gauge, the adjustment by means of the plug gauge is not only not accurate, but also depends on the experience of the operator, and needs to be measured many times.

[0005] Therefore, it is necessary to develop an engine valve clearance adjusting device to overcome the above problems. CONTENT OF THE UTILITY MODEL

[0006] The utility model needs to solve the technical problem of providing an engine valve clearance adjusting device, when the engine valve clearance needs to be adjusted in the engine maintenance process, the engine valve clearance can be quickly and accurately adjusted, and the experience of the operator is not needed, and the measurement is not needed many times.

[0007] In order to solve the above technical problems, the utility model adopts the technical scheme of:

[0008] An engine valve clearance adjusting device, comprising a fixed block, a rotating shaft, a rotating angle dial provided on the outer periphery of the upper part of the rotating shaft, and a pointer provided on the upper end of the rotating shaft through a fixed cap, one end of the pointer is fixed on the fixed block, a flexible shaft capable of driving the pointer to rotate is provided on the other side of the fixed block, a magnet is provided on the end part of the flexible shaft, the lower part of the rotating shaft penetrates out of the rotating angle dial, the rotating angle dial is rotated by hand to drive the rotating shaft to rotate, and the pointer remains stationary, the rotation angle of the rotating angle dial is accurately controlled according to the angle pointed by the pointer.

[0009] A further improvement of the technical solution of the present utility model is that one end of the pointer is fixed to the fixing block by a first bolt.

[0010] A further improvement of the technical solution of the present utility model is that: two first bolts are arranged in parallel.

[0011] A further improvement of the technical solution of the present utility model is that: the fixing cap is fixed to the rotating shaft by a second bolt, a gap is provided between the pointer and the fixing cap; the second bolt has a limiting and supporting effect on the pointer.

[0012] A further improvement of the technical solution of the present utility model is that the rotating shaft and the angle dial are interference fit.

[0013] A further improvement of the technical solution of the present utility model is that: a plurality of grooves are provided on the outer side of the corner dial for facilitating manual rotation of the corner dial, and a scale is provided on the top of the corner dial; the scale matches the pointer.

[0014] A further improvement of the technical solution of the present utility model is that: the number of the grooves is set to 4.

[0015] Due to the adoption of the above technical solution, the technical progress achieved by the present invention is:

[0016] 1. The utility model is provided with a pointer at the upper end of the rotating shaft and an angle dial on the upper periphery of the rotating shaft. The rotating shaft is rotated by hand, while the pointer remains stationary. The rotation angle of the angle dial is precisely controlled according to the angle indicated by the pointer; the device has a simple structure.

[0017] 2. The utility model places the engine valve clearance adjustment device on the valve clearance adjustment bolt through the socket wrench assembly, and rotates the angle dial by hand to drive the shaft to rotate, while the pointer remains stationary. According to the angle indicated by the pointer, the rotation angle of the angle dial is accurately controlled, so that the engine valve clearance is adjusted to the preset rotation angle. The adjustment time is shortened and repeated measurements are not required. It is easy to operate and does not require experience and judgment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive work.

[0019] Figure 1This is a cross-sectional view of the structure of the engine valve clearance adjustment device provided in an embodiment of the utility model;

[0020] Figure 2 This is a schematic structural diagram of an engine valve clearance adjustment device provided in an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of adjusting the exhaust valve using the engine valve clearance adjustment device provided in an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of adjusting an intake valve using the engine valve clearance adjustment device provided in an embodiment of the present utility model;

[0023] Among them, 1. Magnet; 2. Flexible shaft; 3. First bolt; 4. Pointer; 5. Second bolt; 6. Fixing cap; 7. Rotating shaft; 8. Angle dial; 8-1, groove; 8-2, scale plate; 9. Loose nut; 10. Valve clearance adjustment bolt; 11. Socket wrench assembly; 12. Exhaust valve clearance; 13. Intake valve clearance. DETAILED DESCRIPTION

[0024] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products or devices.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "several" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0027] The utility model will be made further detailed illustration in combination with the drawings and examples:

[0028] As Figure 1 、 2 Indicated, a kind of engine valve clearance adjusting device, including fixed block, rotating shaft 7, the rotating angle dial 8 of setting in the upper outer periphery of rotating shaft 7 and the pointer 4 of setting in the upper end of rotating shaft 7 by fixed cap 6;One end of pointer 4 is fixed in fixed block, and the other side of fixed block is provided with the flexible shaft 2 (for pointer 4 zeroing) capable of driving pointer 4 rotation, and magnet 1 is provided at the end of flexible shaft 2;The lower part of rotating shaft 7 passes out rotating angle dial 8;Rotating angle dial 8 is rotated by hand to drive rotating shaft 7 rotation, while pointer 4 remains stationary, according to the angle that pointer 4 points, the rotation angle of rotating angle dial 8 is realized accurate control.

[0029] Further, one end of pointer 4 is fixed in fixed block by first bolt 3. First bolt 3 is parallelly arranged 2, to ensure the installation of pointer 4 firm.

[0030] Further, fixed cap 6 is fixed on rotating shaft 7 by second bolt 5, and gap is provided between pointer 4 and fixed cap 6;Second bolt 5 limits and supports pointer 4.

[0031] Further, rotating shaft 7 and rotating angle dial 8 are interference fit.

[0032] Further, the outer side of rotating angle dial 8 is provided with a plurality of recesses 8-1 for rotating rotating angle dial 8 by hand, and the top end of rotating angle dial 8 is provided with scale dial 8-2;Scale dial 8-2 is matched with pointer 4. Recess 8-1 can be provided with 2, 3 or 4, and the specific number can be set according to actual situation, and the main role is to facilitate the rotation of rotating angle dial 8 by hand.

[0033] The adjusting method of the engine valve clearance adjusting device provided by the utility model is shown in Figure 3 、 4 As indicated, comprising the following steps:

[0034] Step 1, before adjusting the valve clearance of engine, let the engine cool for at least 30 minutes, then rotate the crankshaft until the valve overlap state is reached, i.e. the exhaust valve has not closed, and the intake valve starts to open the working top dead center;

[0035] Step 2, rotate flexible shaft 2 to adjust pointer 4, so that pointer 4 is zeroed;

[0036] Step 3, attract the magnet 1 to the vicinity of the valve position that needs to be adjusted, select the socket wrench assembly 11 corresponding to the valve clearance adjustment bolt 10, install the upper end of the selected socket wrench assembly 11 to the bottom end of the rotating shaft 7, and place the bottom end of the selected socket wrench assembly 11 on the valve clearance adjustment bolt 10; the valve clearance adjustment bolt 10 is any one of a straight line, a cross, a rectangle, a circle, a hexagon, a plum blossom, etc.

[0037] Step 4: Then, rotate the angle dial 8 clockwise to the bottom, that is, until there is no gap between the exhaust valve clearance 12 or the intake valve clearance 13;

[0038] In step 5, the rotation angle dial 8 is rotated counterclockwise until the preset rotation angle of the exhaust valve clearance 12 or the intake valve clearance 13 is reached; the valve clearance adjustment bolts 10 of different engines are different, and the rotation angle needs to be determined based on the pitch of the valve clearance adjustment bolts 10.

[0039] Step 6. Finally, tighten the loosening nut 9 according to the specified torque.

[0040] Example:

[0041] Taking a V-type 90° angle, 6-cylinder, four-valve engine as an example (2 intake valves + 2 exhaust valves), the rotation angles are shown in Table 1 below:

[0042] Table 1 Engine valve clearance transfer angle table

[0043]

[0044] The valve clearance adjustment sequence for a V-type 90° angle, 6-cylinder, four-valve engine is shown in Table 2 below:

[0045] Table 2 Valve clearance adjustment sequence

[0046] Valve overlap Adjustment A1 B2 B3 A2 A3 B1 B2 A1 A2 B3 B1 A3

[0047] In summary, the engine valve clearance adjustment device provided by the present invention has a simple structure, an easy-to-operate adjustment method, does not require experience and judgment, takes less time to adjust, and does not require repeated measurements.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An engine valve clearance adjustment device, characterized in that: The invention comprises a fixed block, a rotating shaft (7), an angle dial (8) arranged on the outer periphery of the upper part of the rotating shaft (7), and a pointer (4) arranged on the upper end of the rotating shaft (7) through a fixed cap (6); one end of the pointer (4) is fixed on the fixed block, and a flexible shaft (2) capable of driving the pointer (4) to rotate is arranged on the other side of the fixed block, and a magnet (1) is arranged at the end of the flexible shaft (2); the lower part of the rotating shaft (7) passes through the angle dial (8); the rotating shaft (7) is driven to rotate by manually rotating the angle dial (8), while the pointer (4) remains stationary, and the rotation angle of the angle dial (8) is accurately controlled according to the angle indicated by the pointer (4).

2. The engine valve clearance adjustment device according to claim 1, characterized in that: One end of the pointer (4) is fixed to the fixing block via a first bolt (3).

3. The engine valve clearance adjustment device according to claim 2, characterized in that: Two first bolts (3) are arranged in parallel.

4. The engine valve clearance adjustment device according to claim 1, characterized in that: The fixing cap (6) is fixed to the rotating shaft (7) via a second bolt (5), and a gap is provided between the pointer (4) and the fixing cap (6); the second bolt (5) has a limiting and supporting effect on the pointer (4).

5. The engine valve clearance adjustment device according to claim 1, characterized in that: The rotating shaft (7) and the angle dial (8) are interference fit.

6. The engine valve clearance adjustment device according to claim 1, characterized in that: The outer side of the angle dial (8) is provided with a plurality of grooves (8-1) for facilitating manual rotation of the angle dial (8), and the top of the angle dial (8) is provided with a scale plate (8-2); the scale plate (8-2) matches the pointer (4).

7. The engine valve clearance adjustment device according to claim 6, characterized in that: The number of the grooves (8-1) is 4.

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