Tool for measuring deflection of air valve

Abstract

The utility model discloses a tool for measuring the sinkage of a valve, belongs to the technical field of engines, and solves the problems that the existing method for measuring the sinkage of the valve is complicated in operation, low in working efficiency and high in labor intensity of workers. The tool for measuring the deflection of the air valve comprises a datum plate, a plurality of measuring holes are formed in the datum plate, a receding hole is formed in the datum plate, the receding hole is cylindrical, the plurality of measuring holes are circumferentially distributed with the circle center of the receding hole as the midpoint, a measuring rod is movably inserted into one measuring hole, and the measuring rod is movably connected with the datum plate. A plurality of through holes are formed in the datum plate, fastening screw rods are movably inserted into the through holes, the fastening screw rods correspond to threaded holes in the cylinder cover, and a supporting cylinder is arranged on the fastening screw rods below the datum plate in a sleeving mode. According to the tool for measuring the deflection of the air valve, the working efficiency is effectively improved, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, and more particularly to a tool for measuring the sinking amount of a valve. Background Art

[0002] The intake, exhaust, and seat rings of high-power internal combustion engines are crucial components of the combustion chamber. The sealing performance of these valves directly impacts the engine's power output. During engine operation, the closing and opening of the valves incur wear, requiring replacement to ensure proper sealing and engine power.

[0003] The existing method of measuring the degree of valve wear is generally to compare the difference between the distance from the top surface of the cylinder head to the top surface of the valve after the valve and valve spring are pressed into the cylinder head assembly and the initial distance, thereby judging the degree of valve wear. However, this measurement method requires the cylinder head to be disassembled for measurement, which is cumbersome, time-consuming and inefficient. This is especially true for high-power internal combustion engines. The cylinder head and other components are large in size and heavy in weight, making maintenance and inspection difficult and labor-intensive for workers. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a tool for measuring valve sinking amount in view of the above-mentioned deficiencies in the prior art, which is simple to operate, reduces the workload of measuring valve sinking, effectively improves work efficiency, and reduces the labor intensity of workers.

[0005] The technical solution of the present utility model is as follows: a tool for measuring the valve sinking amount, including a reference plate, a plurality of measuring holes are provided on the reference plate, a clearance hole is provided on the reference plate, the clearance hole is cylindrical, and the plurality of measuring holes are arranged in a circle with the center of the clearance hole as the midpoint, a measuring rod is movably inserted in one of the measuring holes, a plurality of through holes are provided on the reference plate, a fastening screw is movably inserted in the through hole, the fastening screw corresponds to the threaded hole on the cylinder head, and a support tube is sleeved on the fastening screw below the reference plate.

[0006] As a further improvement, the measuring rod is provided with scale values.

[0007] Furthermore, a rubber pad is provided at the bottom of the support tube.

[0008] Furthermore, the sliding sleeve on the measuring rod is provided with a locking sleeve, the locking sleeve is located above the reference plate, the lower part of the locking sleeve is provided with a threaded hole, the threaded hole is provided with a clamping bolt threadedly connected to it, and one end of the clamping bolt is in contact with the outer wall surface of the measuring rod.

[0009] Furthermore, there are two threaded holes, and the two threaded holes are symmetrically distributed on both sides of the locking sleeve with the central axis of the locking sleeve as the center.

[0010] Furthermore, the upper portion of the locking sleeve is provided with anti-slip grooves.

[0011] Beneficial effects

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. The tooling for measuring valve sinking of the utility model is simple to operate. The measurement can be performed by simply disassembling the cylinder head cover, which greatly reduces the workload of measuring valve sinking, effectively improves work efficiency, and reduces the labor intensity of workers.

[0014] 2. The tool for measuring valve sinking of the utility model can measure all valves at one time, avoiding incorrect measurement data caused by operational errors due to changes in the measurement reference, and has high accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model when in use;

[0017] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of A;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the locking sleeve in the utility model

[0019] Figure 5 It is a schematic diagram of the cross-sectional structure of the support tube in the present utility model.

[0020] Among them: 1-reference plate, 2-measuring hole, 3-allowance hole, 4-measuring rod, 5-through hole, 6-support cylinder, 7-fastening screw, 8-locking sleeve, 9-threaded hole, 10-clamping bolt, 11-rubber pad, 12-anti-slip groove, 13-cylinder head, 14-valve spring upper seat, 15-injector. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0022] See Figure 1-5A tool for measuring valve sinking includes a reference plate 1, a plurality of measuring holes 2 are provided on the reference plate 1, a clearance hole 3 is provided on the reference plate 1, the clearance hole 3 is cylindrical, and the plurality of measuring holes 2 are arranged in a circle with the center of the clearance hole 3 as the midpoint. After the measuring tool is installed, the injector 15 on the cylinder head 13 is plugged into the clearance hole 3 to avoid interference between the injector 15 and the reference plate 1 during installation and measurement, thereby affecting the measurement of valve sinking; a measuring rod 4 is movably inserted into one of the measuring holes 2, and the measuring hole 2 is adapted to the measuring rod 4 so that the measured distance is the vertical distance between the reference plate 1 and the valve spring upper seat 14. The datum plate 1 is provided with a plurality of through holes 5, in which fastening screws 7 are movably inserted, and the fastening screws 7 correspond to the threaded holes on the cylinder head 13. A supporting tube 6 is sleeved on the fastening screws 7 below the datum plate 1. The diameters of the supporting tube 6 and the through holes 5 are larger than the diameters of the fastening screws 7, and the diameter of the through holes 5 is smaller than the diameter of the nut of the fastening screw 7. When the datum plate 1 is manufactured, there is an error in the machining position of the through holes 5. The gap between the through holes 5 and the fastening screws 7 can be finely adjusted to ensure that the tooling can be smoothly installed on the cylinder head 13. When measuring, all the gas holes of the cylinder head 13 to be measured are first Rotate the door to the closed position, then remove the cylinder head cover, place the four support tubes 6 on the threaded holes of the cylinder head 13 respectively, and make the fastening bolts 7 pass through the through holes 5 and support tubes 6 on the reference plate 1 in sequence, and then thread them into the threaded holes of the cylinder head 13, so as to fix the measuring tool on the cylinder head 13, then insert the measuring rod 4 into one of the measuring holes 2, and extend one end of the measuring rod 4 to the top surface of the valve spring upper seat 14, measure the distance between the upper end surface of the reference plate 1 and the top surface of the valve spring upper seat 14 through the measuring rod 4, and record the data, then pull out the measuring rod 4 and insert it into other measuring holes 2, and repeat this step. , in which only one measuring rod 4 is inserted into the other measuring holes 2 for measurement, the purpose of which is to reduce the variables that cause measurement errors and make the measurement data more accurate; the distance between the top surface of the other valve spring upper seat 14 and the upper end surface of the reference plate 1 is measured and recorded for a long time. After the measurement is completed, the standard value is consulted, and the difference obtained by subtracting the standard value from the measurement is the wear value. Finally, the degree of valve wear is judged according to the wear value to decide whether it is necessary to disassemble the cylinder head and replace the valve and seat ring; the tooling for measuring the valve sinking amount has a simple structure, can measure all valves at one time, avoids the measurement data being incorrect due to operational errors caused by changes in the measurement reference, and has high accuracy.

[0023] In this embodiment, the measuring rod 4 is provided with a scale value to facilitate measuring and recording the distance between the top surface of the valve spring upper seat 14 and the upper end surface of the reference plate 1.

[0024] In this embodiment, a rubber pad 11 is provided at the bottom of the support tube 6, and the bottom of the support tube 6 is in rigid contact with the end face of the cylinder head 13. When fixing the tooling, the tightening bolts 7 apply a downward force to the support tube 6, which will cause indentation or damage to the end face of the cylinder head 13. Installing the rubber pad 11 at the bottom of the support tube 6 allows for flexible contact between the support tube 6 and the cylinder head 13, which can avoid this situation.

[0025] In this embodiment, a locking sleeve 8 is provided on the sliding sleeve of the measuring rod 4, and the locking sleeve 8 is located above the reference plate 1. A threaded hole 9 is provided on the lower part of the locking sleeve 8, and a clamping bolt 10 threadedly connected to it is provided in the threaded hole 9, and one end of the clamping bolt 10 contacts the outer wall surface of the measuring rod 4; there are two threaded holes 9, and the two threaded holes 9 are symmetrically distributed on both sides of the locking sleeve 8 with the central axis of the locking sleeve 8 as the center. When one end of the measuring rod 2 touches the top surface of the valve spring upper seat 14, the operator holds the measuring rod 2 with one hand to ensure that it is in a vertical state, and tightens the clamping bolt 10 on the locking sleeve 8 with the other hand, and then takes it out to read the measurement data; because when reading the measurement data on the measuring ruler 2, the worker's line of sight needs to be flush with the upper end surface of the reference plate 1 to ensure the accuracy of the read value, the measuring rod 2 can be taken out through the locking part 8, which is convenient for reading the measurement value.

[0026] In this embodiment, the upper portion of the locking sleeve 8 is provided with anti-slip grooves 12. When the operator takes out the measuring rod 2 to read the measurement value, he can hold the upper portion of the locking sleeve 8 with his hand. The fire-proof grooves 12 are provided on the upper portion of the locking sleeve 8 to increase the friction force and prevent the measuring rod 2 from falling due to slipping when taking out the measuring rod 2, thereby affecting the accuracy of the measurement data.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention. These modifications and improvements will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A tool for measuring valve sinking, characterized in that: The invention comprises a reference plate (1), wherein the reference plate (1) is provided with a plurality of measuring holes (2), the reference plate (1) is provided with a clearance hole (3), the clearance hole (3) is cylindrical, the plurality of measuring holes (2) are arranged in a circle with the center of the clearance hole (3) as the midpoint, a measuring rod (4) is movably inserted into one of the measuring holes (2), the reference plate (1) is provided with a plurality of through holes (5), a fastening screw (7) is movably inserted into the through hole (5), the fastening screw (7) corresponds to the threaded hole on the cylinder head (13), and a support tube (6) is sleeved on the fastening screw (7) below the reference plate (1).

2. The tool for measuring valve sinking according to claim 1, characterized in that: The measuring rod (4) is provided with scale values.

3. The tool for measuring valve sinking according to claim 1, characterized in that: The bottom of the support cylinder (6) is provided with a rubber pad (11).

4. The tool for measuring valve sinking according to claim 1, characterized in that: The sliding sleeve on the measuring rod (4) is provided with a locking sleeve (8), and the locking sleeve (8) is located above the reference plate (1). The lower part of the locking sleeve (8) is provided with a threaded hole (9), and the threaded hole (9) is provided with a clamping bolt (10) threadedly connected thereto, and one end of the clamping bolt (10) contacts the outer wall surface of the measuring rod (4).

5. The tool for measuring valve sinking according to claim 4, characterized in that: There are two threaded holes (9) in total, and the two threaded holes (9) are symmetrically distributed on both sides of the locking sleeve (8) with the central axis of the locking sleeve (8) as the center.

6. The tool for measuring valve sinking according to claim 5, characterized in that: The upper portion of the locking sleeve (8) is provided with anti-slip grooves (12).

Images