阅读说明：本技术 一种用于柴油发动机的配气机构的液压挺柱 (Hydraulic tappet for valve actuating mechanism of diesel engine ) 是由 向大成 冀金喜 裴学宏 张晓东 胡少辉 于 2019-10-30 设计创作，主要内容包括：本发明公开了一种用于柴油发动机的配气机构的液压挺柱,包括摇臂和柱塞,所述柱塞压装在摇臂的内部,所述摇臂的上表面开设有摇臂油槽,所述柱塞的内部嵌入连接有内嵌块,所述内嵌块的外侧开设有限位卡簧安装槽,所述柱塞与限位卡簧安装槽之间填充有限位弹簧,所述内嵌块的顶端与柱塞之间嵌入连接有弹簧座,所述弹簧座底端的外侧与柱塞之间固定连接有挺柱弹簧,本发明涉及柴油发动机配气机构领域技术领域。该用于柴油发动机的配气机构的液压挺柱,能够实现零间隙的初始装配状态,并且在运行中能够自动补偿磨损产生的间隙,减小发动机因配气机构产生的噪音,并且减少发动机装配成本和客户的维修维护成本。(The invention discloses a hydraulic tappet for a valve actuating mechanism of a diesel engine, which comprises a rocker arm and a plunger, wherein the plunger is pressed and installed inside the rocker arm, the upper surface of the rocker arm is provided with a rocker arm oil groove, the plunger is embedded and connected with an embedded block, the outer side of the embedded block is provided with a limiting clamp spring installation groove, a limiting spring is filled between the plunger and the limiting clamp spring installation groove, a spring seat is embedded and connected between the top end of the embedded block and the plunger, and a tappet spring is fixedly connected between the outer side of the bottom end of the spring seat and the plunger. The hydraulic tappet for the valve actuating mechanism of the diesel engine can realize the initial assembly state of zero clearance, can automatically compensate the clearance generated by abrasion in the running process, reduces the noise of the engine generated by the valve actuating mechanism, and reduces the assembly cost of the engine and the maintenance cost of a client.)

1. The utility model provides a hydraulic tappet for diesel engine's valve actuating mechanism, includes rocking arm (10) and plunger (1), plunger (1) pressure equipment is in the inside of rocking arm (10), rocking arm oil groove (22), its characterized in that have been seted up to the upper surface of rocking arm (10): the ball-point plunger is characterized in that an inner embedded block (6) is embedded in the plunger (1), a limiting clamp spring mounting groove (16) is formed in the outer side of the inner embedded block (6), a limiting spring (7) is filled between the plunger (1) and the limiting clamp spring mounting groove (16), a spring seat (3) is embedded between the top end of the inner embedded block (6) and the plunger (1), a tappet spring (2) is fixedly connected between the outer side of the bottom end of the spring seat (3) and the plunger (1), a check valve spring (4) is filled in the spring seat (3), a check valve steel ball (5) is filled between the bottom end of the check valve spring (4) and the inner embedded block (6), a ball tappet (8) is slidably connected to the bottom end of the inner embedded block (6), and a ball socket (9) is sleeved on the outer side of the bottom end of the ball.

2. The hydraulic tappet for a valve train of a diesel engine according to claim 1, wherein: a ball tappet oil groove (19) is formed in the ball tappet (8), a ball socket oil groove (21) is formed in the ball socket (9), and the ball socket oil groove (21) is communicated with the ball tappet oil groove (19).

3. The hydraulic tappet for a valve train of a diesel engine according to claim 1, wherein: a rocker lubricating oil inlet (14) is formed in one side of the rocker (10), a lubricating oil groove (15) is formed in the outer side of the plunger (1), a one-way valve oil inlet (13) is formed in the outer side of the embedded block (6), and the rocker lubricating oil inlet (14), the lubricating oil groove (15) and the one-way valve oil inlet (13) are communicated.

4. A hydraulic tappet for a valve train of a diesel engine according to claim 3, wherein: a tappet oil inlet (11) is reserved between the top end of the inner embedded block (6) and the top end inside the plunger (1), and a high-pressure cavity (12) is reserved between the top end of the ball tappet (8) and the inside of the inner embedded block (6).

5. The hydraulic tappet for a valve train of a diesel engine according to claim 1, wherein: an anti-falling groove (17) is formed between the inner embedded block (6) and the plunger (1) and close to the lower side of the limiting clamp spring mounting groove (16), and a ball head (18) is arranged between the bottom end of the inner embedded block (6) and the edge of the upper side of the ball head tappet (8).

6. The hydraulic tappet for a valve train of a diesel engine according to claim 1, wherein: the bottom end of the ball tappet (8) is a component with a hemispherical structure, and a ball socket lubricating oil inlet (20) is formed between the edge of the top end inside the ball socket (9) and the bottom end of the ball tappet (8).

Technical Field

The invention relates to the technical field of a valve actuating mechanism of a diesel engine, in particular to a hydraulic tappet of the valve actuating mechanism of the diesel engine.

Background

In the field of a valve actuating mechanism of a diesel engine, in the prior art, a rocker arm of the valve actuating mechanism adopts an adjusting bolt component for adjusting a valve clearance, the rocker arm is a traditional mechanical mode, in order to eliminate the influence of expansion caused by heat and contraction caused by cold, a specific valve clearance needs to be manually reserved in an initial state, the clearance brings noise generated during the operation of the engine, and the valve clearance needs to be adjusted again after the adjusting bolt component is abraded.

The valve clearance adjustment in the initial state is an important process for an engine, and the production cost is high in both manual adjustment and automatic assembly line automatic adjustment and manual detection modes. The engine is abraded and readjusted after running for a period of time, so that maintenance cost is required, operation time of business is wasted, and operation cost of customers is increased.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a hydraulic tappet of a valve actuating mechanism for a diesel engine, which solves the problems that in order to eliminate the influence of thermal expansion and cold contraction, a specific valve clearance needs to be manually reserved in an initial state, the clearance causes noise generated during the operation of the engine, and the valve clearance needs to be readjusted after an adjusting bolt assembly is abraded.

In order to achieve the purpose, the invention is realized by the following technical scheme: the hydraulic tappet for the valve actuating mechanism of the diesel engine comprises a rocker arm and a plunger, wherein the plunger is pressed in the rocker arm, a rocker arm oil groove is formed in the upper surface of the rocker arm, an embedded block is connected to the inside of the plunger in an embedded mode, a limiting clamp spring mounting groove is formed in the outer side of the embedded block, a limiting spring is filled between the plunger and the limiting clamp spring mounting groove, a spring seat is connected between the top end of the embedded block and the plunger in an embedded mode, a tappet spring is fixedly connected between the outer side of the bottom end of the spring seat and the plunger, a check valve spring is filled in the spring seat, a check valve steel ball is filled between the bottom end of the check valve spring and the embedded block, a ball tappet is slidably connected to the bottom end of the embedded block, and a ball socket is sleeved on the.

Preferably, a ball tappet oil groove is formed in the ball tappet, a ball socket oil groove is formed in the ball socket, and the ball socket oil groove is communicated with the ball tappet oil groove.

Preferably, a rocker lubricating oil inlet is formed in one side of the rocker, a lubricating oil groove is formed in the outer side of the plunger, a one-way valve oil inlet is formed in the outer side of the inner embedded block, and the rocker lubricating oil inlet, the lubricating oil groove and the one-way valve oil inlet are communicated.

Preferably, a tappet oil inlet is reserved between the top end of the inner embedded block and the top end of the interior of the plunger, and a high-pressure cavity is reserved between the top end of the ball tappet and the interior of the inner embedded block.

Preferably, an anti-falling groove is formed between the embedded block and the plunger and on the lower side close to the limiting clamp spring mounting groove, and a ball head is arranged between the bottom end of the embedded block and the edge of the upper side of the ball head tappet.

Preferably, the bottom end of the ball tappet is a component with a hemispherical structure, and a ball socket lubricating oil inlet is formed between the edge of the top end inside the ball socket and the bottom end of the ball tappet.

Advantageous effects

The invention provides a hydraulic tappet for a valve train of a diesel engine. Compared with the prior art, the method has the following beneficial effects: the hydraulic tappet for the gas distribution mechanism of the diesel engine is pressed and installed inside the rocker arm through the plunger, the upper surface of the rocker arm is provided with a rocker arm oil groove, the inside of the plunger is embedded and connected with an embedded block, the outside of the embedded block is provided with a limiting clamp spring installation groove, a limiting spring is filled between the plunger and the limiting clamp spring installation groove, a spring seat is embedded and connected between the top end of the embedded block and the plunger, a tappet spring is fixedly connected between the outside of the bottom end of the spring seat and the plunger, a one-way valve spring is filled inside the spring seat, a one-way valve steel ball is filled between the bottom end of the one-way valve spring and the embedded block, the bottom end of the embedded block is slidably connected with a ball tappet, the outside of the bottom end of the ball tappet is sleeved with a ball socket, the hydraulic tappet can realize an initial assembly state with zero, and the assembly cost of the engine and the maintenance cost of a client are reduced, and the service operation benefit of the client is improved.

Drawings

FIG. 1 is an assembly view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a cross-sectional view of the present invention;

fig. 4 is an assembly view of the plunger and the check valve plunger of the present invention.

In the figure: 1. a plunger; 2. a tappet spring; 3. a spring seat; 4. a check valve spring; 5. a check valve steel ball; 6. an embedded block; 7. a limiting spring; 8. a ball tappet; 9. a ball socket; 10. a rocker arm; 11. an oil inlet of the tappet; 12. a high pressure chamber; 13. an oil inlet of the one-way valve; 14. a rocker arm lube inlet; 15. a lubricating oil groove; 16. a limiting clamp spring mounting groove; 17. a drop-proof groove; 18. a ball head; 19. a ball tappet oil groove; 20. a ball head and socket lubrication inlet; 21. a ball and socket oil groove; 22. the rocker arm oil groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a hydraulic tappet for a valve actuating mechanism of a diesel engine comprises a rocker arm 10 and a plunger 1, wherein the plunger 1 is pressed in the rocker arm 10, a rocker arm oil groove 22 is formed in the upper surface of the rocker arm 10, an embedded block 6 is connected in the plunger 1 in an embedded manner, the embedded block 6 is of a hollow structure, the top end of the embedded block 6 is sealed through a check valve steel ball 5, a limiting clamp spring mounting groove 16 is formed in the outer side of the embedded block 6, a rocker arm lubricating oil inlet 14 is formed in one side of the rocker arm 10, a lubricating oil groove 15 is formed in the outer side of the plunger 1, a check valve oil inlet 13 is formed in the outer side of the embedded block 6, the rocker arm lubricating oil inlet 14, the lubricating oil groove 15 and the check valve oil inlet 13 are communicated, a tappet oil inlet 11 is reserved between the top end of the embedded block 6 and the top end of the inside of the plunger 1, a high-pressure cavity 12 is reserved between the top end of the ball tappet 8 and the inside of the embedded block 6, an anti, a ball head 18 is arranged between the bottom end of the inner embedded block 6 and the upper side edge of the ball head tappet 8, a limit spring 7 is filled between the plunger 1 and a limit snap spring mounting groove 16, a spring seat 3 is embedded and connected between the top end of the inner embedded block 6 and the plunger 1, a tappet spring 2 is fixedly connected between the outer side of the bottom end of the spring seat 3 and the plunger 1, a check valve spring 4 is filled inside the spring seat 3, a check valve steel ball 5 is filled between the bottom end of the check valve spring 4 and the inner embedded block 6, the bottom end of the inner embedded block 6 is slidably connected with the ball head tappet 8, a ball head tappet oil groove 19 is arranged inside the ball head tappet 8, an oil groove ball socket 21 is arranged inside the ball socket 9, the ball socket oil groove 21 is communicated with the ball head tappet oil groove 19, the bottom end of the ball head tappet 8 is a component with a hemisphere structure, a ball socket lubricating oil inlet 20 is arranged, the ball socket 9 is sleeved on the outer side of the bottom end of the ball tappet 8, the device can realize the initial assembly state of zero clearance, and can automatically compensate the clearance generated by abrasion in the running process, the noise of the engine generated by an air distribution mechanism is reduced, the assembly cost of the engine and the maintenance cost of a client are reduced, the business operation benefit of the client is improved, the initial assembly state of zero clearance can be realized by the device, the clearance generated by abrasion in the running process can be automatically compensated, the noise of the engine generated by the air distribution mechanism is reduced, the assembly cost of the engine and the maintenance cost of the client are reduced, and the business operation benefit of the client is improved.

When the plunger piston works, the plunger piston 1 is pressed in the rocker arm 10, lubricating oil enters the high-pressure cavity 12 through the rocker arm lubricating oil inlet 14, the lubricating oil groove 15 and the check valve oil inlet 13, then part of the lubricating oil enters the space between the ball tappet 8 and the ball socket 9 along the ball tappet oil groove 19, redundant lubricating oil is discharged from the ball socket oil groove 21, meanwhile, the other part of the lubricating oil in the high-pressure cavity 12 slides along the inner walls of the ball tappet 8 and the inner embedded block 6, and slides downwards along the outer surface of the ball tappet 8 after passing through the ball head 18; lubricating oil gets into high-pressure chamber 12 after, the inside pressure of high-pressure chamber 12 rises, thereby can drive check valve steel ball 5 extrusion check valve spring 4, thereby high-pressure chamber 12 and tappet oil inlet 11 intercommunication, lubricating oil slides to the clearance between interior abaculus 6 and plunger 1 from tappet oil inlet 11, lubricate interior abaculus 6 and plunger 1, rotate downwards under the effect of camshaft when rocking arm 10, drive hydraulic tappet downstream, promote the valve bridge through ball socket 9, the trend of the upward removal of reaction force promotion bulb tappet 8 that produces, but high-pressure chamber 12 is sealed this moment, intracavity pressure increases, overcome thrust, make the valve bridge push open the valve downwards, accomplish the distribution function.

In the invention, a plunger is pressed and mounted in the rocker arm, the upper surface of the rocker arm is provided with a rocker arm oil groove, the plunger is embedded and connected with an inner embedded block, the outer side of the inner embedded block is provided with a limit clamp spring mounting groove, a limit spring is filled between the plunger and the limit clamp spring mounting groove, a spring seat is embedded and connected between the top end of the inner embedded block and the plunger, a tappet spring is fixedly connected between the outer side of the bottom end of the spring seat and the plunger, a check valve spring is filled in the spring seat, a check valve steel ball is filled between the bottom end of the check valve spring and the inner embedded block, the bottom end of the inner embedded block is connected with a ball tappet in a sliding way, and a ball socket is sleeved on the outer side of the bottom end of the ball tappet, the device can realize the initial assembly state of zero clearance, can automatically compensate the clearance generated by abrasion, and the service operation benefit of the client is improved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.