Engine valve rod mounting tool

Abstract

The utility model relates to the technical field of engine valve rod installation, and particularly discloses an engine valve rod installation tool which comprises a connecting rod. The other end of the connecting rod is provided with an adjusting part; the fixing part abuts against an engine valve chamber shell. The adjusting part abuts against the valve rod and can abut against the valve rod. The adjusting part comprises a length adjusting unit and a jacking unit; the center line of the length adjusting unit is perpendicular to the center line of the jacking unit. The length adjusting unit is used for adjusting the distance between the center line of the jacking unit and the bottom rod; the jacking unit is used for jacking the valve rod. Compared with the prior art, the flat plate abuts against the engine valve chamber shell, the adjusting part abuts against the valve rod, installation of the valve rod is facilitated, multi-person operation is avoided, and the installation efficiency is improved; and by arranging the length adjusting unit, jacking of the jacking unit on the valve rod is guaranteed, the device can be suitable for engines of different specifications, disassembly, assembly and maintenance of the adjusting part are facilitated, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of engine valve stem installation, and specifically discloses an engine valve stem installation tool. Background Art

[0002] The engine valve stem is an important component in the engine and plays a crucial role during the engine operation. The main function of the valve stem is to cooperate with components such as the valve, valve oil seal, and valve guide to ensure that the valve can move correctly and smoothly. It enables the valve to open and close by cooperating with the tappet or valve rocker arm, thereby controlling the intake of air or fuel mixture into the engine combustion chamber and the exhaust of the burned exhaust gas.

[0003] The valve assembly generally includes a valve, valve retainer, upper and lower valve spring seats, and valve spring. The clearance (valve clearance) between the valve stem and components such as the valve and valve guide needs to be regularly checked and adjusted to ensure that the valve can close properly and avoid air leakage or affecting the engine performance. If the valve stem is bent or deformed, it needs to be checked and repaired in a timely manner, otherwise it may affect the normal movement of the valve, resulting in unstable engine operation or performance degradation.

[0004] When fixing the engine valve stem, it is necessary to squeeze the valve spring to clamp the valve stem into the appropriate position, which is very laborious when squeezing the spring, inconvenient for installation, and often requires multiple people to cooperate to complete the installation. Summary of the Utility Model

[0005] Aiming at the above deficiencies of the prior art, the utility model provides an engine valve stem installation tool to solve the problems that it is very laborious to squeeze the spring when installing the valve stem, inconvenient for installation, and often requires multiple people to cooperate to complete the installation.

[0006] To achieve the above object, the technical solution of the utility model is as follows:

[0007] An engine valve stem installation tool includes a connecting rod integrally arranged in a concave shape; the connecting rod includes a bottom rod; both ends of the bottom rod are fixedly provided with side rods; the side rod at one end of the bottom rod is provided with a fixing part, and the side rod at the other end is provided with an adjusting part; the fixing part abuts against the engine valve chamber housing; the adjusting part abuts against the valve stem and can press against the valve stem. The adjusting part includes a length adjusting unit and a pressing unit; the center line of the length adjusting unit is perpendicular to the center line of the pressing unit; the length adjusting unit is used to adjust the distance between the center line of the pressing unit and the bottom rod of the connecting rod; the pressing unit is used to press against the valve stem. When in use, the fixing part is abutted against the engine valve chamber housing, and the valve stem is pressed by the adjusting part, which is convenient for the installation of the valve stem, avoids multi-person operation, and improves the installation efficiency. The setting of the length adjusting unit ensures the pressing of the valve stem by the pressing unit, can be applicable to engines of different specifications, and is convenient for the disassembly, assembly and maintenance of the adjusting part, and prolongs the service life. The concave shape is convenient for being arranged outside the engine valve chamber housing.

[0008] Preferably, the fixing part includes a threaded hole provided on the side rod; a jack is threadedly arranged in the threaded hole. The jack abuts against the engine valve chamber housing.

[0009] Preferably, the center line of the threaded hole is arranged in the plane where the connecting rod is located.

[0010] Preferably, the jack includes a screw rod threadedly connected to the threaded hole; a flat plate is fixedly arranged at the end of the screw rod. The setting of the flat plate increases the contact area with the engine valve chamber housing and ensures the stability of the setting of the engine valve stem installation tool.

[0011] Preferably, the length adjusting unit includes a sleeve and a pin shaft; the sleeve is sleeved on the side rod; a number of through holes one are provided on the side rod; a number of through holes two are provided on the sleeve; the pin shaft can be inserted into the through holes one and two; the pressing unit is fixedly arranged at the end of the sleeve. The position of the sleeve on the connecting rod can be fixed by the pin shaft, and the distance between the pressing unit at the end of the sleeve and the bottom rod of the connecting rod can be adjusted.

[0012] Preferably, the pressing unit includes a fixing block fixedly installed on the sleeve; a sliding groove is arranged in the fixing block; a rack is slidably arranged in the sliding groove; a gear shaft is arranged on the fixing block; the teeth on the gear shaft mesh with the rack; a radial rod is arranged at one end of the gear shaft. Hold the radial rod and rotate the gear shaft, and then drive the rack to move in the sliding groove, and then press against the valve stem by the rack.

[0013] Preferably, a top plate is fixedly arranged at the lower end of the rack. The top plate can increase the contact area with the valve stem and ensure the stability of the pressing.

[0014] The beneficial effects of the present utility model are as follows: When in use, the fixing part is abutted against the engine valve chamber housing, and the adjusting part is used to press against the valve stem, which facilitates the installation of the valve stem, avoids multi-person operation, and improves the installation efficiency. The setting of the length adjusting unit ensures the pressing of the valve stem by the pressing unit, which can be applicable to engines of different specifications, and facilitates the disassembly, assembly and maintenance of the adjusting part, and prolongs the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2 is a sectional structural schematic diagram of the present utility model;

[0018] Figure 3 is a structural schematic diagram of the connecting rod of the present utility model;

[0019] Figure 4 is a structural schematic diagram of the sleeve and the fixing block of the present utility model.

[0020] Description of the reference numerals in the drawings:

[0021] 1 - connecting rod, 2 - ejector rod, 3 - sleeve, 4 - pin shaft, 5 - fixing block, 6 - rack, 7 - gear shaft, 8 - radial rod, 9 - top plate; 101 - threaded hole, 102 - through hole one, 103 - bottom rod; 201 - screw, 202 - flat plate; 301 - through hole two; 501 - chute. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to enable those skilled in the art to better understand the technical solutions in the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Such as Figures 1-4As shown in the figure, an engine valve stem installation tool includes a connecting rod 1 that is integrally concave-shaped; the connecting rod 1 includes a bottom rod 103; side rods 104 are fixedly arranged at both ends of the bottom rod 103; a fixing part is arranged on the side rod 104 at one end of the bottom rod 103, and an adjusting part is arranged on the side rod 104 at the other end; the fixing part abuts against the engine valve chamber housing; the adjusting part abuts against the valve stem and can press the valve stem. When in use, the fixing part is abutted against the engine valve chamber housing, and the valve stem is pressed by the adjusting part, which is convenient for the installation of the valve stem, avoids multi-person operation, and improves the installation efficiency. The connecting rod 1 is integrally concave-shaped, which is convenient for being arranged outside the engine valve chamber housing. The fixing part includes a threaded hole 101 arranged on the side rod 104; a top rod 2 is internally threaded in the threaded hole 101. The top rod 2 abuts against the engine valve chamber housing. The center line of the threaded hole 101 is arranged in the plane where the connecting rod 1 is located. The top rod 2 includes a screw rod 201 threadedly connected to the threaded hole 101; a flat plate 202 is fixedly arranged at the end of the screw rod 201. The arrangement of the flat plate 202 increases the contact area with the engine valve chamber housing and ensures the stability of the installation of this engine valve stem installation tool.

[0024] In the above setting, the adjusting part includes a length adjusting unit and a pressing unit; the center line of the length adjusting unit is perpendicular to the center line of the pressing unit; the length adjusting unit is used to adjust the distance between the center line of the pressing unit and the bottom rod 104; the pressing unit is used to press the valve stem. The setting of the length adjusting unit ensures the pressing of the valve stem by the pressing unit, and is convenient for the disassembly, assembly and maintenance of the adjusting part, and prolongs the service life. The length adjusting unit includes a sleeve 3 and a pin shaft 4; the sleeve 3 is sleeved on the side rod 104; a number of through holes one 102 are arranged on the side rod 104; a number of through holes two 301 are arranged on the sleeve 3; the pin shaft 4 can be inserted into the through holes one 102 and the through holes two 301; the pressing unit is fixedly arranged at the end of the sleeve 3. The position of the sleeve 3 on the connecting rod 1 can be fixed by the pin shaft 4, and the distance between the pressing unit at the end of the sleeve 3 and the bottom rod of the connecting rod 1 can be adjusted. The pressing unit includes a fixing block 5 fixedly installed on the sleeve 3; a sliding groove 501 is arranged in the fixing block 5; a rack 6 is slidably arranged in the sliding groove 501; a gear shaft 7 is arranged on the fixing block 5; the teeth on the gear shaft 7 mesh with the rack 6; a radial rod 8 is arranged at one end of the gear shaft 7. Hold the radial rod 8 and rotate the gear shaft 7, and then drive the rack 6 to move in the sliding groove 501, and then use the rack 6 to press the valve stem. A top plate 9 is fixedly arranged at the lower end of the rack 6. The top plate 9 can increase the contact area with the valve stem and ensure the stability of pressing.

[0025] In other alternative embodiments, the pressing unit includes a screw rod, and the screw rod is threadedly arranged at the end of the side rod 104, and the valve stem is pressed by the screw rod.

[0026] Although the present utility model has been described in detail by referring to the accompanying drawings and in conjunction with the preferred embodiments, the present utility model is not limited thereto. Without departing from the spirit and essence of the present utility model, those of ordinary skill in the art can make various equivalent modifications or substitutions to the embodiments of the present utility model, and all such modifications or substitutions should be within the scope covered by the present utility model. / Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present utility model, and all should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the said claims.

Claims

1. An engine valve stem installation tool, characterized in that: The invention comprises a connecting rod (1) which is arranged in a concave shape as a whole; the connecting rod (1) comprises a bottom rod (103); side rods (104) are fixedly arranged at both ends of the bottom rod (103); the side rod (104) at one end of the bottom rod (103) is provided with a fixing portion, and the side rod (104) at the other end is provided with an adjusting portion; the fixing portion contacts the engine valve chamber housing; the adjusting portion contacts the valve stem and can press the valve stem; the adjusting portion comprises a length adjusting unit and a pressing unit; the center line of the length adjusting unit is arranged perpendicular to the center line of the pressing unit; the length adjusting unit is used to adjust the distance between the center line of the pressing unit and the bottom rod (103); and the pressing unit is used to press the valve stem.

2. The engine valve stem installation tool according to claim 1, characterized in that: The fixing portion comprises a threaded hole (101) arranged on the side rod (104); a top rod (2) is arranged on the inner thread of the threaded hole (101).

3. The engine valve stem installation tool according to claim 2, characterized in that: The center line of the threaded hole (101) is arranged in the plane where the connecting rod (1) is located.

4. The engine valve stem installation tool according to claim 3, characterized in that: The push rod (2) comprises a screw rod (201) threadedly connected to the threaded hole (101); a flat plate (202) is fixedly provided at the end of the screw rod (201).

5. The engine valve stem installation tool according to claim 1, characterized in that: The length adjustment unit comprises a sleeve (3) and a pin (4); the sleeve (3) is sleeved on the side rod (104); a plurality of first through holes (102) are provided on the side rod (104); a plurality of second through holes (301) are provided on the sleeve (3); the pin (4) can be inserted into the first through hole (102) and the second through hole (301); and the pressing unit is fixedly arranged at the end of the sleeve (3).

6. The engine valve stem installation tool according to claim 5, characterized in that: The top pressure unit comprises a fixed block (5) fixedly mounted on the sleeve (3); a slide groove (501) is arranged in the fixed block (5); a rack (6) is slidably arranged in the slide groove (501); a gear shaft (7) is arranged on the fixed block (5); teeth on the gear shaft (7) mesh with the rack (6); and a radial rod (8) is arranged at one end of the gear shaft (7).

7. The engine valve stem installation tool according to claim 6, characterized in that: A top plate (9) is fixedly disposed at the lower end of the rack (6).

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