阅读说明：本技术 一种可补偿气门间隙的气门桥装置 (A kind of valve Biodge device can compensate for valve clearance ) 是由 俞黎明 俞振寰 于 2019-09-02 设计创作，主要内容包括：一种可补偿气门间隙的气门桥装置,其间隙补偿机构包括柱塞、阀体、启闭件、第一弹性件、第二弹性件,柱塞顶面与安装腔的顶面密封贴合,且形成有第一油腔,第一油腔底部设有上下导通的通道,阀体上端形成有与柱塞相适配的第二油腔,第二油腔的内侧壁与柱塞的外侧壁紧公差配合,阀体沿安装腔、柱塞上下滑动设置,第一弹性件能驱使阀体向下运动并能与气门顶端保持接触,启闭件设置在第二油腔内,并对应设置在通道下方,第二弹性件能驱使启闭件向上运动并能封闭通道。(A kind of valve Biodge device can compensate for valve clearance, its rocker compensating gear includes plunger, valve body, opening and closing element, first elastic component, second elastic component, the top surface palette of plunger top surface and installation cavity, and it is formed with the first oil pocket, first oil pocket bottom is equipped with the channel be connected up and down, valve body upper end is formed with the second oil pocket compatible with plunger, the inner sidewall of second oil pocket and the lateral wall close tolerance fit of plunger, valve body is along installation cavity, plunger slides up and down setting, first elastic component can drive valve body to move downward and can be kept in contact with valve top, opening and closing element is arranged in the second oil pocket, and it is correspondingly arranged at below channel, second elastic component can drive opening and closing element to move upwards simultaneously can closed channel.)

1. a kind of valve Biodge device that can compensate for valve clearance including two valves (1) and crosses on two valves (1) Air valve bridge (2)；It is characterized by:

Air valve bridge (2) both ends are equipped with the installation cavity (21) of lower ending opening and the oilhole with conducting at the top of installation cavity (21) (22)；

It is equipped with rocker compensating gear (3) in the installation cavity (21), the rocker compensating gear (3) includes plunger (31), valve Body (32), opening and closing element (33)；

The top surface palette of plunger (31) top surface and installation cavity (21), and be formed with to lower recess simultaneously at the top of plunger (31) The first oil pocket (311) corresponding with oilhole (22), the first oil pocket (311) bottom are equipped with the channel (312) be connected up and down；

Valve body (32) upper end is formed with to lower recess and compatible second oil pocket (321) with plunger (31), and described second The inner sidewall (322) of oil pocket (321) and lateral wall (313) close tolerance fit of plunger (31), the valve body (32) is along installation cavity (21), plunger (31) slides up and down setting, and the valve body (32), which is also connected with, drives it to move downward and can be with valve (1) top The first elastic component (34) being kept in contact；

Opening and closing element (33) setting is correspondingly arranged at below channel (312), the opening and closing element in the second oil pocket (321) (33) it is also connected with the second elastic component (35) for driving it to move upwards simultaneously energy closed channel (312).

2. a kind of valve Biodge device that can compensate for valve clearance according to claim 1, it is characterised in that: the installation cavity (21) inner wall is equipped with annular groove (23) close to the position of lower end, is equipped with circlip (4) in the annular groove (23)；The valve body (32) Between bottom is equipped with the boss (323) across circlip (4), and the upper surface of the shoulder (324) of valve body (32) and circlip (4) exists Gap.

3. a kind of valve Biodge device that can compensate for valve clearance according to claim 1, it is characterised in that: mend in the gap Repaying mechanism (3) further includes a mounting base (36), and the mounting base (36) is circumferentially uniformly distributed several through slots (361)；Described first Elastic component (34) is spring, and both ends offset with mounting base (36), valve body (32) respectively, drive the upper surface of mounting base (36) with The lower end surface of plunger (31) offsets；The opening and closing element (33) and the second elastic component (35) are arranged in mounting base (36), and second Elastic component (35) is spring, and both ends offset with mounting base (36), opening and closing element (33) respectively, drives opening and closing element (33) and plunger (31) channel (312) seals cooperation；The elastic force of first elastic component (34) is greater than the elastic force of the second elastic component (35).

4. a kind of valve Biodge device that can compensate for valve clearance according to claim 3, it is characterised in that: the plunger (31) lower end surface is equipped with locating slot (314), and mounting base (36) upper end is formed with outside flange (362), the flange (362) it is adapted and is embedded in locating slot (314) with locating slot (314), first elastic component (34) is set in mounting base (36) it is, and offsets with the lower surface of flange (362).

5. a kind of valve Biodge device that can compensate for valve clearance according to claim 3, it is characterised in that: the mounting base (36) bottom surface is equipped with the second elastic component (35) compatible cambered surface protrusion (363).

6. a kind of valve Biodge device that can compensate for valve clearance according to claim 3, it is characterised in that: the through slot (361) quantity is 3.

7. a kind of valve Biodge device that can compensate for valve clearance according to claim 3, it is characterised in that: the opening and closing element It (33) is spherical shape, channel (312) inner wall is in the conical surface, and the opening and closing element (33) can be with the tangent cooperation of channel (312) inner wall.

8. a kind of valve Biodge device that can compensate for valve clearance according to claim 1, it is characterised in that: the air valve bridge (2) oilhole (22) mutual conduction at both ends.

Technical field

The present invention relates to technical field of engines, more particularly to a kind of valve Biodge device that can compensate for valve clearance.

Background technique

When engine operation, valve will be expanded because of the raising of temperature, if between valve and its driving member while cooling Gapless or gap are too small, then under hot, the expanded by heating of valve and its driving member will cause valve-closing not tight, cause to send out Motivation gas leakage in compression and working stroke.In order to eliminate this phenomenon, usually when engine cold state is assembled, in valve and its There are certain gaps in transmission mechanism, to compensate the expansion rate after valve is heated, for overhead camshaft, Four valve arrangement hair Motivation in typical air distribution structure, needs special equipment to adjust the valve clearance.

If Chinese utility model patent 201620123206.8 is Beijing Feitian Cummins Engine Co., Ltd applies The engine valve clearance regulating device of a kind of engine valve clearance regulating device, the utility model includes bracket and rotatable The operation portion of ground installation on the bracket and the valve clearance insertion section that can be driven by the operation portion, are started using this Machine gap regulator can facilitate, measurement quickly is adjusted to engine valve clearance.

For another example Chinese invention patent application 201711291640.2 is the one of Guangxi Yuchai Machinery Co., Ltd.'s application Kind of engine valve clearance adjusts device, and the device of the patent application includes sleeve and the bottle opener for being plugged in the barrel bore, The barrel bore is equipped with can be using the taper hole of the rotation of bottle opener described in frictional force drives, and correspondingly, the bottle opener is equipped with The conical surface compatible with the taper hole, taper hole and cone match in the patent application can provide biggish frictional force, can be effective Valve clearance is adjusted in the adjusting bolt of rotary valve, and guide part can make convenient be accurately stuck in of bottle opener adjust opening on bolt head In slot, working efficiency is improved.

There are following disadvantages for available engine valve: 1, worked in valve actuating mechanism due to the presence of valve clearance Cheng Zhong, components can generate mutual shock, can not only generate noise, but also cannot keep valve crash speed and power of taking a seat It is constant；

2, valve clearance generally requires to be adjusted by special equipments such as above-mentioned gap regulators, not only increases Engine just dresses up this, and the steady operation in order to guarantee engine, needs regularly detector gap and is adjusted in time, Later maintenance cost is high；

3, since there are deviations between each valve spring force, and the operating temperature difference and valve of each valve thermally expand journey The factors such as different are spent, two valve face heights differences that air valve bridge is driven is easily caused, cannot keep two valve operations Consistency.

Summary of the invention

In order to overcome the shortcomings of that background technique, the present invention provide a kind of valve Biodge device that can compensate for valve clearance.

The technical solution adopted in the present invention: a kind of valve Biodge device can compensate for valve clearance, including two valves with And cross at two laterostigmatal air valve bridges；The air valve bridge both ends be equipped with lower ending opening installation cavity and with installation cavity at the top of The oilhole of conducting；Rocker compensating gear is installed, the rocker compensating gear includes plunger, valve body, opening and closing in the installation cavity Part；The top surface palette of the plunger top surface and installation cavity, and plunger head is formed with to lower recess and corresponding with oilhole The first oil pocket, first oil pocket bottom is equipped with the channel that is connected up and down；The valve body upper end be formed with to lower recess and with Compatible second oil pocket of plunger, the inner sidewall of second oil pocket and the lateral wall close tolerance fit of plunger, the valve body edge Installation cavity, plunger slide up and down setting, and the valve body, which is also connected with, drives it to move downward and can be kept in contact with valve top The first elastic component；The opening and closing element is arranged in the second oil pocket, and is correspondingly arranged at below channel, and the opening and closing element is also connected with There is the second elastic component for driving it to move upwards simultaneously energy closed channel.

The installation cavity wall is equipped with annular groove close to the position of lower end, is equipped with circlip in the annular groove；The valve body Bottom is equipped with the boss across circlip, and there are gaps for the upper surface of the shoulder of valve body and circlip.

The rocker compensating gear further includes a mounting base, and the mounting base is circumferentially uniformly distributed several through slots；Described One elastic component is spring, and both ends offset with mounting base, valve body respectively, drives lower end surface phase of the upper surface of mounting base with plunger It supports；The opening and closing element and the second elastic component are arranged in mounting base, and the second elastic component is spring, both ends respectively with installation Seat, opening and closing element offset, and drive the sealing cooperation of the channel of opening and closing element and plunger；The elastic force of first elastic component is greater than the second bullet The elastic force of property part.

The plunger lower end surface is equipped with locating slot, and the mounting base upper end is formed with outside flange, the flange and fixed Position slot is adapted and is embedded in locating slot, and first elastic component is set in mounting base and is, and offsets with the lower surface of flange.

The mounting base bottom surface is equipped with cambered surface protrusion compatible with the second elastic component.

The quantity of the through slot is 3.

The opening and closing element is spherical shape, and the vias inner walls are in the conical surface, and the opening and closing element can be with the tangent cooperation of vias inner walls.

The oilhole mutual conduction at the air valve bridge both ends.

The course of work of the above-mentioned valve Biodge device that can compensate for valve clearance is as follows: when there are gaps between valve body and valve When, valve body can move down under the action of the first elastic component, to eliminate the gap between valve body and valve, keep valve body with Good contact between valve, meanwhile, machine oil enters air valve bridge upper oil hole through fueller, the first oil pocket is flowed into, in machine Under the pressure effect of oil, so that opening and closing element overcomes the elastic force of the second elastic component to move downward, so that channel is opened, the first oil pocket Interior machine oil will pass through channel and enter in the second oil pocket, until the second oil pocket fills machine oil, the oil pressure of opening and closing element upper and lower ends Balance, opening and closing element just reseal channel under the action of the second elastic component.

When valve operation, since opening and closing element encloses channel, the machine oil in the second oil pocket can not be flowed into first Oil pocket, and the machine oil in the second oil pocket can not be revealed rapidly between the inner sidewall of the second oil pocket and the lateral wall of plunger, Cause to form high pressure oil in the second oil pocket, moving upwards for valve body can then be prevented by the high pressure oil in the second oil pocket, thus valve Bridge can realize pressure transmitting by valve body and valve contacts.

When valve heating temperature constantly increases, valve can generate certain expansion, and the machine oil in the second oil pocket again can be from It is slowly leaked out between the inner sidewall of second oil pocket and the lateral wall of plunger, to adapt to it because empty by thermogenetic expansion Between, it is ensured that the problem of being not in valve-closing, prevents engine gas leakage in compression and working stroke.

The beneficial effects of the present invention are: being to remain to contact between 1, valve body and valve, valve clearance is not present, therefore Reduce the noise generated in the valve actuating mechanism course of work by components impact；

2, improve Valve Dynamics characteristic, keep valve crash speed and the constant of power of taking a seat；

3, it is not necessarily to dedicated slack adjuster, valve seat automatically prolongs adjustment under the action of the first elastic component, not only reduces Engine installation cost, and in engine life cycle, it does not need to carry out valve clearance detection adjustment, reduction is tieed up after sale Accomplish this；

4, air valve bridge both ends are respectively provided with rocker compensating gear, and two rocker compensating gears are mutually indepedent, according to corresponding valve bullet The factors such as spring force, working temperature of valve, valve degree of thermal expansion are adaptively adjusted, and different differences in height is compensated, and guarantee gas The raft of pontoons keeps good with two valves and contacts, stable and reliable in work.

Detailed description of the invention

Fig. 1 is the structural schematic diagram for the valve Biodge device that the embodiment of the present invention can compensate for valve clearance.

Fig. 2 is the structural schematic diagram of air valve bridge of the embodiment of the present invention and rocker compensating gear.

Fig. 3 is the enlarged diagram in Fig. 2 at A.

The structural schematic diagram of Fig. 4 air valve bridge of the embodiment of the present invention.

The structural schematic diagram of Fig. 5 rocker compensating gear of the embodiment of the present invention.

The structural schematic diagram of Fig. 6 plunger of the embodiment of the present invention.

The structural schematic diagram of Fig. 7 valve body of the embodiment of the present invention.

Structural representation Fig. 1 of Fig. 8 mounting base of the embodiment of the present invention.

Structural representation Fig. 2 of Fig. 9 mounting base of the embodiment of the present invention.

Specific embodiment

Embodiments of the present invention is further illustrated with reference to the accompanying drawing:

As shown, a kind of valve Biodge device that can compensate for valve clearance, including two valves 1, air valve bridge 2, backlash compensation machine Structure 3.

The air valve bridge 2 crosses on two valves 1, the air valve bridge 2 can drive simultaneously the movement of two valves 1 realize into Gas or exhaust stroke.

2 both ends of air valve bridge be equipped with lower ending opening installation cavity 21 and with the oilhole 22 that is connected at the top of installation cavity 21, 22 mutual conduction of oilhole at both ends, and oilhole 22 is connected with the fueller of engine, the fueller of engine can be toward oil The machine oil of its needs is provided at hole 22.

The rocker compensating gear 3 is arranged in installation cavity 21 comprising plunger 31, valve body 32, opening and closing element 33, the first bullet Property part 34, the second elastic component 35.

The top surface palette of 31 top surface of plunger and installation cavity 21, and be formed at the top of plunger 31 to lower recess and with The machine oil of corresponding first oil pocket 311 of oilhole 22, fueller can be entered in the first oil pocket 311 by oilhole 22, institute It states 311 bottom of the first oil pocket and is equipped with the channel 312 be connected up and down.

32 upper end of valve body is formed with to lower recess and second oil pocket 321 compatible with plunger 31, the first oil pocket 311 Interior machine oil can be flowed into the second oil pocket 321 by channel 312, the inner sidewall 322 and plunger 31 of second oil pocket 321 313 close tolerance fit of lateral wall, enable the machine oil in the second oil pocket 321 to have inner sidewall 322 and column from the second oil pocket 321 It is slowly revealed between the lateral wall 313 of plug 31.

The valve body 32 slides up and down cooperation with installation cavity 21, can slide up and down along installation cavity 21, plunger 31, described first Elastic component 34 can drive valve body 32 to move downward, and contact so that valve body 32 can remain good with 1 top of valve.

The opening and closing element 33 is arranged in the second oil pocket 321, and is correspondingly arranged at 312 lower section of channel, second elasticity Part 35 can drive opening and closing element 33 to move upwards, so that opening and closing element 33 can keep sealing closed channel with channel 312, prevent the The machine oil of two oil pockets 321 flows back in the first oil pocket 311.

Wherein, the rocker compensating gear 3 further includes a mounting base 36, and mounting base 36 can be opening and closing element 33 and the second elasticity Part 35 provides installation space, guarantees structure stabilization more compact.

First elastic component 34 is spring, and both ends offset with mounting base 36, valve body 32 respectively, drives mounting base 36 Upper surface and the lower end surface of plunger 31 offset, which had both guaranteed that valve body 32 can remain good with 1 top of valve Good contact, and can guarantee fitting closely for 31 top of plunger and the top surface of installation cavity 21.

Further, 31 lower end surface of plunger is equipped with locating slot 314, and 36 upper end of mounting base is formed with outside turn over Side 362, the flange 362 are adapted with locating slot 314 and are embedded in locating slot 314, and first elastic component 34 is set in peace Dress seat 36 is, and offsets with the lower surface of flange 362, and compact overall structure is reasonable, and installs more firm stabilization.

The opening and closing element 33 and the second elastic component 35 are arranged in mounting base 36, and the second elastic component 35 is also spring, Both ends offset with mounting base 36, opening and closing element 33 respectively, drive the sealing of the channel 312 of opening and closing element 33 and plunger 31 to cooperate, and described The elastic force of first elastic component 34 is greater than the elastic force of the second elastic component 35, compresses the second elastic component when opening and closing element 33 receives pressure When 35, it is ensured that the first elastic component 34 will not be compressed, and guarantee that overall mechanism is stablized.

Further, cambered surface protrusion 363 compatible with the second elastic component 35 can also be arranged in 36 bottom surface of mounting base, So that the installation of the second elastic component 35 is more stable.

The opening and closing element 33 then can be set to spherical shape, and 312 inner wall of channel is in the conical surface, the opening and closing element 33 can with it is logical The tangent cooperation of 312 inner wall of road, the opening and closing element 33 of spherical structure and the channel 312 of pyramidal structure, can preferably carry out centering tune It is whole, it is ensured that it can effectively be sealed, and prevent positional shift from the problem of leakage reflux occur.

The mounting base 36 is circumferential to be uniformly distributed 3 through slots 361, and machine oil is flowed into after mounting base 36 by channel 312, It is flowed into the second oil pocket 321 from through slot 361 again.

In addition, 21 inner wall of installation cavity is equipped with annular groove 23 close to the position of lower end, card is equipped in the annular groove 23 Spring 4；32 bottom of valve body is equipped with the boss 323 across circlip 4, and the upper surface of the shoulder 324 of valve body 32 and circlip 4 exists Gap, being able to maintain rocker compensating gear 3 in installation cavity 21 by circlip 4 can not skid off, and be easily installed assembling, and in valve Enough gaps are reserved between the shoulder 324 of body 32 and the upper surface of circlip 4, meets rocker compensating gear 3 and extends compensation gap Space.

The course of work of the above-mentioned valve Biodge device that can compensate for valve clearance is as follows: existing when between valve body 32 and valve 1 When gap, valve body 32 can move down under the action of the first elastic component 34, extend so that rocker compensating gear 3 is whole, thus The gap between valve body 32 and valve 1 is eliminated, remains good between valve body 32 and valve 1 and contacts, meanwhile, in valve body 32 During moving down, the volume of the second oil pocket 321 becomes larger, and machine oil enters the oilhole 22 on air valve bridge 2 through fueller, After be flowed into the first oil pocket 311, machine oil pressure effect under, opening and closing element 33 can overcome the elastic force of the second elastic component 35 to Lower movement, to open channel 312, the machine oil in the first oil pocket 311 will pass through channel 312 and enter in the second oil pocket 321, directly Machine oil is filled to the second oil pocket 321, the oil pressure of 33 upper and lower ends of opening and closing element will balance at this time, and opening and closing element 33 is just in the second elasticity Channel is resealed under the action of part 35.

When valve operation, since opening and closing element 33 encloses channel 312, the machine oil in the second oil pocket 321 is can not It is flowed into the first oil pocket 311, while the machine oil in the second oil pocket 321 also can not be rapidly from the inside of the second oil pocket 321 It is revealed between wall 322 and the lateral wall 313 of plunger 31, causes to form high pressure oil in the second oil pocket 321, valve body 32 moves upwards It can then be prevented by the high pressure oil in the second oil pocket 321, so that air valve bridge 2, which can be contacted by valve body 32 with valve 1, realizes pressure Transmitting.

When valve 1 is heated, and temperature is caused constantly to increase, valve 1 can generate certain expansion, this process be slowly, Therefore the machine oil in the second oil pocket 321 can be as the variation be from the inner sidewall 322 of the second oil pocket 321 and the lateral wall of plunger 31 It is slowly leaked out between 313, to adapt to it because by thermogenetic expansion space, it is ensured that be not in asking for valve-closing Topic prevents engine gas leakage in compression and working stroke.

The beneficial effect of the embodiment of the present invention is: 1, being to remain to contact between valve body and valve, there is no between valve Gap, therefore reduce the noise generated in the valve actuating mechanism course of work by components impact；

2, improve Valve Dynamics characteristic, keep valve crash speed and the constant of power of taking a seat；

3, it is not necessarily to dedicated slack adjuster, valve seat automatically prolongs adjustment under the action of the first elastic component, not only reduces Engine installation cost, and in engine life cycle, it does not need to carry out valve clearance detection adjustment, reduction is tieed up after sale Accomplish this；

4, air valve bridge both ends are respectively provided with rocker compensating gear, and two rocker compensating gears are mutually indepedent, according to corresponding valve bullet The factors such as spring force, working temperature of valve, valve degree of thermal expansion are adaptively adjusted, and different differences in height is compensated, and guarantee gas The raft of pontoons keeps good with two valves and contacts, stable and reliable in work.

In the description of the present invention, it should be noted that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower", The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair Limitation of the invention.In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply opposite Importance.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition Concrete meaning in invention.In addition, in the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or two More than.

Every technical staff's notice: of the invention although the present invention is described according to above-mentioned specific embodiment Invention thought be not limited in the invention, any repacking with inventive concept will all be included in this patent protection of the patent right In range.