阅读说明：本技术 大型发动机平面液力支撑件 (Plane hydraulic support piece for large engine ) 是由 徐纳 任海军 于 2020-07-08 设计创作，主要内容包括：大型发动机平面液力支撑件,包括呈杯状的外部耦件,外部耦件内设有内部耦件,内部耦件顶部开口处设有带球窝的支撑球座,支撑球座中间设有纵向的液体流入孔,位于支撑球座顶面位置的外部耦件内壁开设有凹槽,凹槽内设有圆形环扣,内部耦件具有中间带圆孔的底板,底板下方依次设有密封球、密封球簧、密封座和弹簧。本发明用于缸径在80~150mm的往复式柴油机的气门驱动机构,结构可靠使用寿命长,具有新的液体及气体流动线路,泄沉时间稳定,降低产品工作时的噪音与振动,提高柴油机的使用性能。(Large-scale engine plane hydraulic support piece, including being cupped outside coupling, be equipped with inside coupling in the outside coupling, inside coupling top opening part is equipped with the support ball seat of taking ball socket, is equipped with fore-and-aft liquid inflow hole in the middle of the support ball seat, and the outside coupling inner wall that lies in support ball seat top surface position is seted up flutedly, is equipped with circular latch closure in the recess, and inside coupling has the bottom plate of taking the round hole in the middle of, and the bottom plate below is equipped with sealing ball, sealing ball spring, seal receptacle and spring in proper order. The valve driving mechanism for the reciprocating diesel engine with the cylinder diameter of 80-150 mm is reliable in structure, long in service life, provided with a new liquid and gas flow circuit, stable in sinking and releasing time, capable of reducing noise and vibration of a product during working and capable of improving the service performance of the diesel engine.)

1. Large-scale engine plane hydraulic support piece, its characterized in that: the coupling device comprises a cup-shaped external coupling piece (1), wherein an internal coupling piece (2) is arranged in the external coupling piece (1), a supporting ball seat (3) with a ball socket is arranged at the opening at the top of the internal coupling piece (2), a longitudinal liquid inflow hole (3.1) is formed in the middle of the supporting ball seat (3), a groove is formed in the inner wall of the external coupling piece (1) located at the top surface of the supporting ball seat (3), a circular ring buckle (4) is arranged in the groove, the internal coupling piece (2) is provided with a bottom plate with a round hole in the middle, and a sealing ball (5), a sealing ball spring (6), a sealing seat (7) and a spring (8) are sequentially arranged.

2. A large engine planar hydraulic support according to claim 1, wherein: the bottom of the external coupling piece (1) is a base with a diameter larger than that of the main body, a circular groove is formed in the bottom surface of the base, and a supporting base (9) is welded in the groove.

3. A large engine planar hydraulic support according to claim 1, wherein: the bottom of the external coupling piece (1) is provided with a circular groove and a two-section supporting base (9), the upper section of the supporting base (9) is inserted into the circular groove and freely rotates, the lower section of the supporting base abuts against the bottom of the external coupling piece (1), and the diameter of the supporting base is larger than that of the external coupling piece (1).

4. A large engine planar hydraulic support according to claim 1, wherein: a certain gap is formed between the inner wall of the external coupling part (1) and the outer wall of the internal coupling part (2), and a plurality of liquid backflow grooves (2.1) are formed in the annular top surface of the internal coupling part (2).

5. Large engine plane hydraulic support according to claim 1 or 2 or 3 or 4, characterized in that: the area formed by the lower part of the internal coupling (2) and the external coupling (1) is set as a lower cavity, the area formed by the inner part of the internal coupling (2) and the supporting ball seat (3) is set as an upper cavity, and the relation between the capacity V1 of the lower cavity and the capacity V2 of the upper cavity is 4V1 ≥ V2 ≥ 1.5V 1.

6. A large engine planar hydraulic support according to claim 5, wherein: the clearance between the inner wall of the outer coupling (1) and the outer wall of the inner coupling (2) is set to be an annular leakage ring, and the length L1 of the annular leakage ring and the diameter D1 of the inner coupling (2) have the relation that 2D1 is larger than or equal to L1 and larger than or equal to 0.75D 1.

7. The large engine planar hydraulic support according to claim 6, wherein: the downward movable range of the outer coupling (1) is set as an operating band, and the relation between the length L2 of the operating band and the diameter D1 of the inner coupling (2) is 0.5D1 ≧ L2 ≧ 0.2D 1.

8. A large engine planar hydraulic support according to claim 5, wherein: the diameter of the support ball seat (3) is smaller than the diameter of the inner coupling (2).

Technical Field

The invention relates to the technical field of engines, in particular to a plane hydraulic support piece of a large-scale engine.

Background

In an engine, a planar hydraulic support structure for transmitting the thrust of a camshaft to a push rod (or a valve stem) is an important component.

The existing structure, especially used for a large-displacement diesel engine, has the problems of unreliable structure, unstable sinking and leakage time, large noise and vibration during working and the like.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides a large engine plane hydraulic support piece which can be used for a large-displacement diesel engine and has reliable structure and stable sinking and discharging time.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

large-scale engine plane hydraulic support piece, including being cupped outside coupling, be equipped with inside coupling in the outside coupling, inside coupling top opening part is equipped with the support ball seat of taking ball socket, is equipped with fore-and-aft liquid inflow hole in the middle of the support ball seat, and the outside coupling inner wall that lies in support ball seat top surface position is seted up flutedly, is equipped with circular latch closure in the recess, and inside coupling has the bottom plate of taking the round hole in the middle of, and the bottom plate below is equipped with sealing ball, sealing ball spring, seal receptacle and spring in proper order.

Preferably, the bottom of the external coupling piece is a base with a diameter larger than that of the main body, a circular groove is formed in the bottom surface of the base, a supporting base is welded in the groove, and the supporting base is of a wear-resistant structure.

Preferably, the bottom of the external coupling part is provided with a circular groove, the external coupling part is provided with a two-section supporting base, the upper section of the supporting base is inserted into the circular groove and freely rotates, the lower section of the supporting base abuts against the bottom of the external coupling part, the diameter of the lower section of the supporting base is larger than that of the external coupling part, and the supporting base is of a wear-resistant structure and is freely and rotatably connected with the external coupling part.

Preferably, a certain gap is formed between the inner wall of the external coupling part and the outer wall of the internal coupling part, a plurality of liquid backflow grooves are formed in the annular top surface of the internal coupling part, liquid below the internal coupling part enters the inner cavity of the internal coupling part through the gap and the liquid backflow grooves, and the liquid backflow grooves are exhaust grooves for facilitating the exhaust of air in the internal coupling part.

Preferably, the area formed below the inner coupling and the outer coupling is set as a lower cavity, the area formed inside the inner coupling and the supporting ball seat is set as an upper cavity, and the relation between the capacity V1 of the lower cavity and the capacity V2 of the upper cavity is 4V 1-V2-1.5V 1.

Preferably, the clearance between the inner wall of the outer coupling and the outer wall of the inner coupling is provided as an annular bleed ring, the length L1 of which is in relation to the diameter D1 of the inner coupling 2D1 ≧ L1 ≧ 0.75D 1.

Preferably, the downward movable range of the outer coupling is set as an operating band, and the relation between the length L2 of the operating band and the diameter D1 of the inner coupling is 0.5D1 ≧ L2 ≧ 0.2D 1.

Preferably, the support ball seat has a diameter smaller than that of the inner coupling, and the support ball seat has a certain gap with the outer coupling to discharge air.

The invention has the beneficial effects that: the valve driving mechanism for the reciprocating diesel engine with the cylinder diameter of 80-150 mm is reliable in structure, long in service life, provided with a new liquid and gas flow circuit, stable in sinking and releasing time, capable of reducing noise and vibration of a product during working and capable of improving the service performance of the diesel engine.

Drawings

FIG. 1 is a perspective view of a first embodiment of the present invention;

FIG. 2 is a cross-sectional view of a first embodiment of the present invention;

FIG. 3 is a perspective view of a second embodiment of the present invention;

FIG. 4 is a cross-sectional view of a second embodiment of the present invention;

fig. 5 is a perspective view of an internal coupling in the present invention.

Description of reference numerals: 1. an external coupling; 2. an internal coupling; 2.1, a liquid reflux tank; 3. a support ball seat; 3.1, liquid inflow holes; 4. a circular ring buckle; 5. a sealing ball; 6. a sealing ball spring; 7. a sealing seat; 8. a spring; 9. and a base is supported.

Detailed Description

The invention will be further illustrated by the following description and the accompanying drawings.