CN206801637U - Brake actuating mechanism for engine brake oil way - Google Patents
Brake actuating mechanism for engine brake oil way Download PDFInfo
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- CN206801637U CN206801637U CN201720418620.6U CN201720418620U CN206801637U CN 206801637 U CN206801637 U CN 206801637U CN 201720418620 U CN201720418620 U CN 201720418620U CN 206801637 U CN206801637 U CN 206801637U
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- 210000000078 claw Anatomy 0.000 claims description 44
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000000452 restraining effect Effects 0.000 claims description 4
- 239000003921 oil Substances 0.000 abstract description 154
- 230000000694 effects Effects 0.000 abstract description 13
- 238000006243 chemical reaction Methods 0.000 abstract description 9
- 239000010705 motor oil Substances 0.000 abstract description 6
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 239000010721 machine oil Substances 0.000 description 31
- 238000000034 method Methods 0.000 description 15
- 230000006835 compression Effects 0.000 description 9
- 238000007906 compression Methods 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000007363 regulatory process Effects 0.000 description 2
- 206010008469 Chest discomfort Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
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- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
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Abstract
A brake actuating mechanism for an engine brake oil path comprises a brake chamber, a brake oil cavity, an adjusting bolt, a ball valve spring seat, a brake spring and a brake piston, wherein the brake oil cavity, the adjusting bolt, the ball valve spring seat, the brake spring and the brake piston are arranged in the brake chamber, engine oil sequentially flows into the brake oil cavity through a side oil hole and a bottom oil hole which are formed in the adjusting bolt, the bottom oil hole, the ball valve and the ball valve spring are arranged in an up-and-down opposite mode, the bottom end of the ball valve spring is communicated with a spring seat bottom hole at the bottom of the ball valve spring seat, the brake piston which is sleeved outside the ball valve spring seat is sleeved with the, and the reaction force of the rocker arm to the brake oil cavity is used for closing the brake oil path, so that the brake oil cavity forms a high-pressure cavity to start braking. The design has the advantages of good braking effect, strong stability, high sensitivity and contribution to reducing the noise in the operation of the mechanism.
Description
Technical field
A kind of engine braking control device is the utility model is related to, belongs to vehicle engine braking technical field, especially
It is related to a kind of brake actuator for engine braking oil path, it is particularly applicable to strengthen the control effect of brake circuit, carry
High insensitivity.
Background technology
Engine braking system is a kind of cylinder of diesel engine inside brake technology, generally compression-release type, passes through hydraulic-driven
One or two exhaust valve is opened in engine compression strokes end, and using engine, caused compression hinders during towing astern
Power, internal friction and intake and exhaust resistance form the technology of braking.The implementation of compression-release type brake generally comprises additional
Formula, Special rocking are arm-type, integrate three kinds of rocker-arm, pass through a set of hydraulic package and coordinate machine oil break-make or engine oil pressure change to realize system
The formation of piston high-voltage oil cavity, direct or indirect realizes the unlatching of exhaust valve in compression stroke end, forms braking.
Patent publication No. is CN101526018A, and publication date is that in September, 2009 application for a patent for invention of 9 days discloses one kind
Compression braking device of four-stroke cycle internal combustion engine, in rocking arm installation as pin one end has between the control valve system of parallel installation and compensation
Gap amount is the rocker compensating gear of the lift of detent bumps；Being connected in exhaust valve bridge on the midpoint of two exhaust valve positions has between compensation
Gap amount for the lift of valve clearance rocker compensating gear, it is latter as pin is coaxially connected under previous rocker compensating gear lower end
The upper end of rocker compensating gear with as underfooting end contacts all the time, the spring force of the rocker compensating gear is more than less than braking oil pressure
As pin is conducted oneself with dignity.Although the invention can open two exhaust valves simultaneously when engine compression brake works, to improve engine
Braking effect, but it still has following defect：
The design is to forbid continuing to flow into for machine oil by way of actively closing in-line in braking, but simultaneously, it is right
It is then without restriction to unload oil circuit, emptying is still in progress, it is difficult to form closing chamber in previous rocker compensating gear, hinder braking
Smoothly realize, i.e., it is enabled to realize, it is not directly to close due to unloading oil circuit, causes oil pressure ripple in previous rocker compensating gear
Dynamic larger, stability is weaker, can also reduce braking effect.
The content of the invention
The purpose of this utility model be overcome the defects of braking effect present in prior art is poor, stability is weaker with
A kind of problem, there is provided the brake actuator for engine braking oil path that braking effect is preferable, stability is stronger.
To realize object above, technical solution of the present utility model is：A kind of system for engine braking oil path
Dynamic executing agency, including arrester and its internal braking oil pocket set, brake piston, the sidepiece and rocking arm of the braking oil pocket
Interior brake circuit, unload oil circuit and communicate, the bottom of brake piston with immediately below it as foot being connected, as ball-and-socket in foot
Formed with valve clearance between bottom and air valve yoke immediately below it；
The brake actuator also includes adjustment bolt, ball valve, ball valve spring, ball valve spring base and tripping spring, institute
The bottom for stating adjustment bolt is located at the inside of arrester, the top of adjustment bolt pass successively after arrester, rocking arm with rocking arm
Outer wall is fixedly connected, offered respectively on the side of adjustment bolt bottom, bottom surface corresponding to side oilhole, bottom surface oilhole, braking
Oil circuit communicates after the oilhole of side with bottom surface oilhole, and the lower section face of bottom surface oilhole is provided with ball valve, and the lower section face of ball valve is set
Ball valve spring is equipped with, the bottom of ball valve spring communicates with the spring base bottom outlet of ball valve spring base bottom, the inside of ball valve spring base
It is inclusive with ball valve, ball valve spring, the outer cover of ball valve spring base is equipped with tripping spring, and the outer cover of tripping spring is lived equipped with braking
Plug, the outer wall of brake piston slide up and down in brake oil intracavitary along the inwall of arrester, brake and are lived in oil pocket side wall positioned at braking
Position between plug, ball valve spring base offers braking and unloads oilhole to be communicated with unloading oil circuit, positioned at system on the bottom of brake piston
Position below dynamic room is connected with as sufficient.
The top of the adjustment bolt is fixedly connected by adjusting nut with the outer wall of rocking arm.
The adjustment bolt is T-type structure, including orthogonal spiral shell fixed part leads to oily portion with spiral shell；The spiral shell leads to oily portion
Waist type structure, including logical oil overhold portion, logical oily waist and the logical oily bottom being sequentially connected, lead to the top surface and spiral shell fixed part in oil overhold portion
Bottom vertical connection, the bottom surface in logical oil overhold portion, lead to the top surface of oily bottom and surround the ring-like of half opening altogether with leading to oily waist
Logical oil groove, lead on oily waist and uniformly offer the bottom surface oilhole phase that at least two side oilholes open up to lead to spiral shell inside oily portion
It is logical.
The top of the bottom surface oilhole is set higher than side oilhole, and the bottom of bottom surface oilhole is equal with the bottom surface for leading to oily bottom
Together, and the minimum point of side oilhole intersects with leading to the top surface of oily bottom.
The position connected in the bottom surface oilhole with leading to oily bottom offers logical oily chamfering.
The logical oily breach corresponding with side oilhole is offered in the logical oil overhold portion, the interior base for leading to oily breach is located at
The surface of corresponding side oilhole, the bottom of the side oilhole are connected with leading to the top surface of oily bottom, and side oilhole, logical
Between the junction of oily bottom and the gusset for leading to oily bottom spacing is enclosed formed with a hole.
The position on its nearly top is provided with external screw thread to be threadedly coupled with adjusting nut on the gusset of the spiral shell fixed part, institute
The inside for stating the top of spiral shell fixed part offers screw connection hole, and the cross section in the screw connection hole is polygon.
The ball valve spring base includes base cylinder portion and at least two base claws, and the base claw is L-type structure, its
Including horizontal claw, perpendicular claw, the top of perpendicular claw is connected with the inner of horizontal claw；Offer and pass through in the middle part of the base cylinder portion
To be communicated with spring base bottom outlet, the top perimeter in base cylinder portion is connected logical base plate through holes with the bottom of perpendicular claw, erects claw
Top perimeter around base cylinder portion is uniformly arranged.
The brake actuator also include following technical characteristics in any one or two or three：Outside horizontal claw
Hold and be connected with the side of falling pawl extended downwardly；Interval pawl gap is offered between adjacent perpendicular claw；The diameter of base plate through holes is more than
The diameter of spring base bottom outlet, and restraining position ring block face is set between the top margin of the base of base plate through holes and spring base bottom outlet.
Compared with prior art, the beneficial effects of the utility model are：
1st, in a kind of brake actuator for engine braking oil path of the utility model, in braking, only close and unload
Oil circuit, without closing brake circuit, do not hinder the entrance of machine oil directly, in this way, easily brake oil intracavitary formed one it is stable
Closing chamber, not only it is beneficial to the realization of braking, and braking effect is preferable, and stability is stronger；Secondly, brake oil is directly acted on
Road, the susceptible engine oil pressure entered, be easy to regulate and control engine oil pressure with control unload oil circuit unlatching whether, such as pass through machine
Oil pressure unloads the opening and closing of oil circuit to control, and intuitive is stronger, and sensitivity is higher, and control effect is more preferable.Therefore, the utility model is not
Only braking effect is preferable, stability is stronger, and intuitive is stronger, sensitivity is higher.
2nd, it is first when realizing braking in a kind of brake actuator for engine braking oil path of the utility model
Oil circuit is unloaded so that braking oil pocket becomes closing chamber, to the anti-of braking oil pocket when recycling rocking arm, rocking arm roller movement by closing
Active force is to further enhance the oil pressure of brake oil intracavitary so that the pressure of ball valve upper and lower ends constantly strengthens, until on ball valve
Row is with closed brake oil circuit so that braking oil pocket becomes high pressure chest, opens braking, and this kind of implementation both make use of the pressure of machine oil
Power, the reaction force of rocker motion is make use of again so that braking effect can be regulated and controled in terms of the two, not only braking effect
Fruit is preferable, convenient and swift, and adjustability is stronger, and application is wider.Therefore, not only braking effect is preferable for the utility model,
And adjustability is stronger.
3rd, in a kind of brake actuator for engine braking oil path of the utility model, in the condition of no machine oil
Under, the adjustment bolt in brake actuator, adjusting nut can be passed through（Screw thread is carried out with adjustment bolt to coordinate so that spiral shell will be adjusted
It is fixed at the top of bolt on the outer wall of rocking arm）To be adjusted to height of the adjustment bolt in vertical direction, so as to adjust as foot
Height, and then certain gap is set beneficial to the bottom of the ball-and-socket in as foot, to realize the adjustment of valve clearance.Therefore, originally
The regulating effect of the valve clearance of utility model is preferable.
4th, in a kind of brake actuator for engine braking oil path of the utility model, set inside brake piston
Tripping spring, kept beneficial to the moment as foot and valve（Or air valve bridge, air valve yoke）, and contact of the rocking arm roller with camshaft,
Contribute to the operating noise of reducing mechanism.Therefore, the utility model is beneficial to the operating noise of reducing mechanism.
Brief description of the drawings
Fig. 1 is structural representation of the utility model under non-brake operating mode.
Fig. 2 is structural representation of the utility model when braking oil-filled.
Fig. 3 is structural representation of the utility model under damped condition.
Fig. 4 is the dimensional structure diagram of adjustment bolt in Fig. 1.
Fig. 5 is Fig. 4 sectional view.
Fig. 6 is the dimensional structure diagram of ball valve spring base in Fig. 1.
Fig. 7 is Fig. 6 sectional view.
Fig. 8 is the structural representation that the utility model is applied to engine braking oil path.
In figure：Brake actuator 1, adjustment bolt 2, side oilhole 21, bottom surface oilhole 22, logical oily chamfering 221, adjustment spiral shell
Mother 23, spiral shell fixed part 24, screw connection hole 241, spiral shell lead to oily portion 25, logical oil overhold portion 251, lead to oily waist 252, lead to oily bottom 253, be logical
Oil groove 254, lead to oily breach 26, spacing 27 is enclosed in interior base 261, hole, ball valve spring base 3, spring base bottom outlet 31, base cylinder portion 32,
Base plate through holes 321, base claw 33, horizontal claw 331, perpendicular claw 332, the side of falling pawl 333, it is spaced pawl gap 34, spacing anchor ring 35, shakes
Arm 4, rocking arm roller 41, roller pin 42, brake circuit 5, oblique oil circuit 51, longitudinal oil circuit 52, unload oil circuit 6, control valve 7, control
Oilhole 75, rocker arm shaft 8, oil circuit 81, braking in axle are unloaded in room 71, control piston 72, control spring 73, control spring base 74, control
Room 9, ball valve 10, ball valve spring 11, tripping spring 12, braking oil pocket 13, brake piston 14, as foot 15, bulb 151, ball-and-socket
152nd, oilhole 16, air valve yoke 17, valve clearance 18 are unloaded in braking.
Embodiment
The utility model is described in further detail below in conjunction with brief description of the drawings and embodiment.
Referring to Fig. 1 to Fig. 8, a kind of brake actuator for engine braking oil path, including arrester 9 and its inside
Braking oil pocket 13, the brake piston 14 of setting, it is described braking oil pocket 13 sidepiece and Rocker arm 4 in brake circuit 5, unload oil circuit 6
Communicate, the bottom of brake piston 14 with immediately below it as foot 15 is connected, as the bottom of ball-and-socket 152 in foot 15 is with being located at
Formed with valve clearance 18 between air valve yoke 17 immediately below it；
The brake actuator also includes adjustment bolt 2, ball valve 10, ball valve spring 11, ball valve spring base 3 and braking bullet
Spring 12, the bottom of the adjustment bolt 2 are located at the inside of arrester 9, and the top of adjustment bolt 2 passes arrester 9, rocking arm successively
Be fixedly connected after 4 with the outer wall of Rocker arm 4, offered respectively on the side of the bottom of adjustment bolt 2, bottom surface corresponding to side oilhole
21st, bottom surface oilhole 22, brake circuit 5 are communicated after side oilhole 21 with bottom surface oilhole 22, and the lower section face of bottom surface oilhole 22 is set
Ball valve 10 is equipped with, the lower section face of ball valve 10 is provided with ball valve spring 11, bottom and the bottom of ball valve spring base 3 of ball valve spring 11
Spring base bottom outlet 31 communicate, the contained inside of ball valve spring base 3 has ball valve 10, ball valve spring 11, the outside of ball valve spring base 3
Tripping spring 12 is set with, the outer cover of tripping spring 12 is equipped with brake piston 14, and the outer wall of brake piston 14 is in braking oil pocket
The inwall of 13 interior edge arresters 9 slides up and down, and brakes in the side wall of oil pocket 13 between brake piston 14, ball valve spring base 3
Position offers braking and unloads oilhole 16 to be communicated with unloading oil circuit 6, positioned at the position of the lower section of arrester 9 on the bottom of brake piston 14
15 it is connected with as foot.
The top of the adjustment bolt 2 is fixedly connected by adjusting nut 23 with the outer wall of Rocker arm 4.
The adjustment bolt 2 is T-type structure, including orthogonal spiral shell fixed part 24 leads to oily portion 25 with spiral shell；The spiral shell leads to
Oily portion 25 is waist type structure, including logical oil overhold portion 251, logical oily waist 252 and the logical oily bottom 253 being sequentially connected, and leads to oil overhold portion
251 top surface and the bottom vertical connection of spiral shell fixed part 24, the bottom surface for leading to oil overhold portion 251, the top surface for leading to oily bottom 253 and logical oil
Waist 252 surrounds the ring-like logical oil groove 254 of a half opening altogether, leads on oily waist 252 and uniformly offers at least two sides
Oilhole 21 is communicated with leading to inside oily portion 25 the bottom surface oilhole 22 opened up with spiral shell.
The top of the bottom surface oilhole 22 is set higher than side oilhole 21, and the bottom of bottom surface oilhole 22 is with leading to oily bottom 253
Bottom surface flush, and the minimum point of side oilhole 21 with lead to oily bottom 253 top surface intersect.
The position connected in the bottom surface oilhole 22 with leading to oily bottom 253 offers logical oily chamfering 221.
The logical oily breach 26 corresponding with side oilhole 21 is offered in the logical oil overhold portion 251, this leads to oily breach 26
Interior base 261 is located at the surface of corresponding side oilhole 21, the bottom of the side oilhole 21 and the top surface for leading to oily bottom 253
It is connected, and is enclosed between the gusset of side oilhole 21, the junction of logical oily bottom 253 and logical oily bottom 253 formed with a hole
Spacing 27.
The position on its nearly top is provided with external screw thread to connect with the screw thread of adjusting nut 23 on the gusset of the spiral shell fixed part 24
Connect, the inside on the top of the spiral shell fixed part 24 offers screw connection hole 241, and the cross section in the screw connection hole 241 is polygon.
The ball valve spring base 3 includes base cylinder portion 32 and at least two base claws 33, and the base claw 33 is L-type
Structure, it includes horizontal claw 331, perpendicular claw 332, and the top of perpendicular claw 332 is connected with the inner of horizontal claw 331；The bottom
The middle part in seat cylinder portion 32 offers the base plate through holes 321 of insertion to be communicated with spring base bottom outlet 31, the top week in base cylinder portion 32
Side is connected with the bottom of perpendicular claw 332, and perpendicular top perimeter of the claw 332 around base cylinder portion 32 is uniformly arranged.
The brake actuator also include following technical characteristics in any one or two or three：Horizontal claw 331
Outer end be connected with the side of falling pawl 333 extended downwardly；Interval pawl gap 34 is offered between adjacent perpendicular claw 332；Base leads to
The diameter in hole 321 is more than the diameter of spring base bottom outlet 31, and between the top margin of the base of base plate through holes 321 and spring base bottom outlet 31
Restraining position ring block face 35 is set.
A kind of application method of the above-mentioned brake actuator for engine braking oil path, the application method include gas
Door interval regulating process, damped condition control any one or two kinds in technique；
The valve clearance adjusting process refers to：First unclamp adjusting nut 23, then to adjustment bolt 2 vertical direction height
Degree is adjusted, and is then adjusted the distance between ball-and-socket 152 and air valve yoke 17, that is, is adjusted the width of valve clearance 18, adjusted
Bi Hou, then adjusting nut 23 is tightened to pin adjustment bolt 23, now, valve clearance adjusting process terminates；
The damped condition control technique refers to：First close and unload oil circuit 6, then, the machine oil in brake circuit 5 is successively through side
Face oilhole 21, bottom surface oilhole 22 enter ball valve spring base 3, and push ball valve 10, meanwhile, the machine oil into ball valve spring base 3
Flowed into again through spring base bottom outlet 31 inside brake piston 14, and gradually fill up braking oil pocket 13, then unloaded oilhole 16 through braking and flow into
Oil circuit 6 is unloaded, is no longer turned on due to unloading oil circuit 6, the machine oil in oil pocket 13 is braked and constantly enters and can not flow out, causes to brake oil pocket
13 form closing chamber, while constantly entrance with machine oil, as the ball-and-socket 152 in foot 15 is because of Rocker arm 4, rocking arm roller 41
Move by reaction force, the reaction force as foot 15, brake piston 14 through acting on braking oil pocket 13, to increase braking oil pocket
Oil pressure in 13, oil pressure after increasing can compressed ball valve spring 11 from the bottom to top, head a ball on the ball valve spring 11 of stress valve 10 with
Make ball valve 10 up, until ball valve 10 blocks bottom surface oilhole 22, brake circuit 5 is blocked, and the machine oil in brake circuit 5 no longer enters
Enter to brake oil pocket 13, now, braking is opened；Then, if braking need to be released, it only need to again turn on and unload oil circuit 6 so that braking oil pocket
Machine oil in 13 flows out through unloading oil circuit 6, brake release.
Principle of the present utility model is described as follows：
In the utility model as foot 15 is the general name of bulb 151, ball-and-socket 152, the bottom of bulb 151 with ball-and-socket 152
The groove in portion cooperates.The utility model in use, its pressure of machine oil flowed into from outside is controlled by magnetic valve,
I.e. by the size of solenoid valve control engine oil pressure.
Valve clearance adjusts：Valve clearance can ensure the normal work of valve, and gap is too small to cause valve-closing not
Sternly, influence to start and power performance, and the abrasion of valve rocker and camshaft can be increased, valve clearance cross conference cause into, arrange
Unsaturated vapor, and obvious knock can be produced.
Damped condition：Under damped condition, as foot can be come from air valve bridge（Or air valve yoke）Reaction force, the anti-work
Firmly can be successively through acting on braking oil pocket as foot, brake piston, so as to increase the oil pressure of brake oil intracavitary, the oil pressure meeting increased
First compressed ball valve spring, then promote ball valve up to block the bottom surface oilhole under adjustment bolt through ball valve spring, so as to block machine
Oil continues to flow into so that brake oil intracavitary forms a high-voltage oil cavity, opens braking.In addition, inside brake piston
Tripping spring can guarantee that bulb and ball-and-socket, and ball-and-socket all keeps contacting with air valve bridge under any operating mode, if without this spring, ball
Gap occurs with air valve bridge in nest in operation process, and gap can cause to collide, and collision will increase noise.
The quantity of side oilhole 21 is preferably four, and is set around same even circumferential.The quantity of base claw 33 is also excellent
Elect four as, and set around same even circumferential.
Embodiment 1：
Referring to Fig. 1 to Fig. 8, a kind of brake actuator for engine braking oil path, including arrester 9 and its inside
Braking oil pocket 13, the brake piston 14 of setting, it is described braking oil pocket 13 sidepiece and Rocker arm 4 in brake circuit 5, unload oil circuit 6
Communicate, the bottom of brake piston 14 with immediately below it as foot 15 is connected, as the bottom of ball-and-socket 152 in foot 15 is with being located at
Formed with valve clearance 18 between air valve yoke 17 immediately below it；The brake actuator also includes adjustment bolt 2, ball valve
10th, ball valve spring 11, ball valve spring base 3 and tripping spring 12, the bottom of the adjustment bolt 2 are located at the inside of arrester 9, adjust
The top of whole bolt 2 is fixedly connected after passing arrester 9, Rocker arm 4 successively with the outer wall of Rocker arm 4, the side of the bottom of adjustment bolt 2
Side oilhole 21, bottom surface oilhole 22 corresponding to being offered respectively on face, bottom surface, brake circuit 5 after side oilhole 21 with bottom surface
Oilhole 22 communicates, and the lower section face of bottom surface oilhole 22 is provided with ball valve 10, and the lower section face of ball valve 10 is provided with ball valve spring 11,
The bottom of ball valve spring 11 communicates with the spring base bottom outlet 31 of the bottom of ball valve spring base 3, and the contained inside of ball valve spring base 3 has ball
Valve 10, ball valve spring 11, the outer cover of ball valve spring base 3 are equipped with tripping spring 12, and the outer cover of tripping spring 12 is equipped with braking
Piston 14, the outer wall of brake piston 14 are slided up and down in the inwall of the braking interior edge arrester 9 of oil pocket 13, braked in the side wall of oil pocket 13
Position between brake piston 14, ball valve spring base 3 offers braking and unloads oilhole 16 to be communicated with unloading oil circuit 6, and braking is lived
On the bottom of plug 14 positioned at the position of the lower section of arrester 9 with as 15 being connected enough.The top of the adjustment bolt 2 preferably passes through tune
Whole nut 23 is fixedly connected with the outer wall of Rocker arm 4.
A kind of application method of the above-mentioned brake actuator for engine braking oil path, the application method include gas
Door interval regulating process, damped condition control any one or two kinds in technique；
The valve clearance adjusting process refers to：First unclamp adjusting nut 23, then to adjustment bolt 2 vertical direction height
Degree is adjusted, and is then adjusted the distance between ball-and-socket 152 and air valve yoke 17, that is, is adjusted the width of valve clearance 18, adjusted
Bi Hou, then adjusting nut 23 is tightened to pin adjustment bolt 23, now, valve clearance adjusting process terminates；
The damped condition control technique refers to：First close and unload oil circuit 6, then, the machine oil in brake circuit 5 is successively through side
Face oilhole 21, bottom surface oilhole 22 enter ball valve spring base 3（Machine oil can enter before or after oil circuit 6 is unloaded in closing）, and push
Ball valve 10, meanwhile, flowed into again through spring base bottom outlet 31 inside brake piston 14 into the machine oil in ball valve spring base 3, and gradually
Braking oil pocket 13 is filled up, then unloads the inflow of oilhole 16 through braking and unloads oil circuit 6, is no longer turned on, is braked in oil pocket 13 due to unloading oil circuit 6
Machine oil constantly enters and can not flowed out, and causes to brake one closing chamber of formation of oil pocket 13, while constantly entrance with machine oil, as
Ball-and-socket 152 in foot 15 because Rocker arm 4, rocking arm roller 41 motion and by reaction force, the reaction force as foot 15, braking through living
Plug 14 acts on braking oil pocket 13, and to increase the oil pressure in braking oil pocket 13, the oil pressure after increasing can compress ball valve from the bottom to top
Spring 11, valve 10 of heading a ball on the ball valve spring 11 of stress until ball valve 10 blocks bottom surface oilhole 22, are braked so that ball valve 10 is up
Oil circuit 5 is blocked, and the machine oil in brake circuit 5 does not enter back into brake oil chamber 13, and now, braking is opened；Then, if system need to be released
It is dynamic, it only need to again turn on and unload oil circuit 6 so that the machine oil in braking oil pocket 13 flows out through unloading oil circuit 6, brake release.
Embodiment 2：
With embodiment 1, difference is substance：
The adjustment bolt 2 is T-type structure, including orthogonal spiral shell fixed part 24 leads to oily portion 25 with spiral shell；The spiral shell leads to
Oily portion 25 is waist type structure, including logical oil overhold portion 251, logical oily waist 252 and the logical oily bottom 253 being sequentially connected, and leads to oil overhold portion
251 top surface and the bottom vertical connection of spiral shell fixed part 24, the bottom surface for leading to oil overhold portion 251, the top surface for leading to oily bottom 253 and logical oil
Waist 252 surrounds the ring-like logical oil groove 254 of a half opening altogether, leads on oily waist 252 and uniformly offers at least two sides
Oilhole 21 is communicated with leading to inside oily portion 25 the bottom surface oilhole 22 opened up with spiral shell.The top of the bottom surface oilhole 22 is higher than side oilhole
21 are set, the bottom of bottom surface oilhole 22 and the bottom surface flush for leading to oily bottom 253, and the minimum point of side oilhole 21 is with leading to oily bottom
The top surface in portion 253 intersects.The position connected in the bottom surface oilhole 22 with leading to oily bottom 253 offers logical oily chamfering 221.
Embodiment 3：
With embodiment 2, difference is substance：
The logical oily breach 26 corresponding with side oilhole 21 is offered in the logical oil overhold portion 251, this leads to oily breach 26
Interior base 261 is located at the surface of corresponding side oilhole 21, the bottom of the side oilhole 21 and the top surface for leading to oily bottom 253
It is connected, and is enclosed between the gusset of side oilhole 21, the junction of logical oily bottom 253 and logical oily bottom 253 formed with a hole
Spacing 27.The position on its nearly top is provided with external screw thread to connect with the screw thread of adjusting nut 23 on the gusset of the spiral shell fixed part 24
Connect, the inside on the top of the spiral shell fixed part 24 offers screw connection hole 241, and the cross section in the screw connection hole 241 is polygon.
Embodiment 4：
With embodiment 1, difference is substance：
The ball valve spring base 3 includes base cylinder portion 32 and at least two base claws 33, and the base claw 33 is L-type
Structure, it includes horizontal claw 331, perpendicular claw 332, and the top of perpendicular claw 332 is connected with the inner of horizontal claw 331；The bottom
The middle part in seat cylinder portion 32 offers the base plate through holes 321 of insertion to be communicated with spring base bottom outlet 31, the top week in base cylinder portion 32
Side is connected with the bottom of perpendicular claw 332, and perpendicular top perimeter of the claw 332 around base cylinder portion 32 is uniformly arranged.
Embodiment 5：
With embodiment 4, difference is substance：
The brake actuator also include following technical characteristics in any one or two or three：Horizontal claw 331
Outer end be connected with the side of falling pawl 333 extended downwardly；Interval pawl gap 34 is offered between adjacent perpendicular claw 332；Base leads to
The diameter in hole 321 is more than the diameter of spring base bottom outlet 31, and between the top margin of the base of base plate through holes 321 and spring base bottom outlet 31
Restraining position ring block face 35 is set.
Embodiment 6：
For substance with embodiment 1, difference is the engine braking oil path control dress that the utility model is applied
Put and its control technique as follows：
A kind of engine braking oil path control device, including Rocker arm 4, brake actuator 1, rocker arm shaft 8, rocking arm roller 41
With control valve 7, the control valve 7 includes control room 71 and its interior control piston 72 being from top to bottom sequentially arranged, control spring
73rd, spring base 74 is controlled, inwall of the control piston 72 along control room 71 moves up and down, and controls the bottom of piston 72 through control
Spring 73 offers with controlling the middle part of spring base 74 to be connected in control spring base 74 positioned at the position of the lower section of control spring 73
Oilhole 75 is unloaded in the control of insertion, and the position between control piston 72, control spring base 74 is located in the side wall of control room 71 with unloading
Oil circuit 6 communicates；The brake circuit 5 includes intersecting oblique oil circuit 51, longitudinal oil circuit 52, the low port of the oblique oil circuit 51
Communicated with oil circuit 81 in the axle of rocker arm shaft 8, the high port of oblique oil circuit 51 communicates after side oilhole 21 with bottom surface oilhole 22, system
Position in the dynamic side wall of oil pocket 13 between brake piston 14, ball valve spring base 3 offer braking unload oilhole 16 with emptying
Road 6 communicates, and the top end opening of control room 71 communicates with the bottom of longitudinal oil circuit 52, and the top of longitudinal oil circuit 52 passes oblique oil circuit
Its top is extended to after 51.
The control technique of above-mentioned engine braking oil path control device includes non-brake operating mode, two kinds of damped condition, specifically
It is as follows：
Under non-brake operating mode, the pressure of the machine oil entered by rocker arm shaft 8 in brake circuit 5 is less than the bullet of control spring 73
Spring force, into longitudinal oil circuit 52 machine oil can not compression control spring 73, control spring 73 be in extended configuration, now, entrance
Machine oil in brake circuit 5 successively through oblique oil circuit 51, braking oil pocket 13, unload oil circuit 6, control room 71 after, finally unloaded from control
Oilhole 75 flows out.
Under damped condition, the pressure of the machine oil entered by rocker arm shaft 8 in brake circuit 5 is more than the spring of control spring 73
Power, into the continuous compression control spring 73 of machine oil of longitudinal oil circuit 52, until descending control piston 72 block unload oil circuit 6 so that
Unload the machine oil in oil circuit 6 and do not enter back into control room 71, now, oblique oil circuit 51 flows into the machine oil of braking oil pocket 13 no longer through emptying
Road 6 is flowed out, and braking oil pocket 13 forms a closing chamber, while constantly entrance with machine oil, as the ball-and-socket 152 in foot 15 is because shaking
Arm 4, rocking arm roller 41 motion and by reaction force, the reaction force as foot 15, brake piston 14 through acting on braking oil pocket
13, persistently increase the oil pressure in braking oil pocket 13, until braking oil pocket 13 forms high-voltage oil cavity, oblique oil circuit 51 is blocked, no
Organic oil enters braking oil pocket 13 again, and now, braking is opened；Then, if braking need to be closed, only need to reduce to enter by rocker arm shaft 8
Enter the pressure of the machine oil in brake circuit 5, until engine oil pressure is less than the spring force of control spring 73, control piston 72 is controlling
Up under the bounce effect of spring 73, until oil circuit 6, control room 71 are unloaded in conducting, now, the machine oil in braking oil pocket 13 is successively
Through unloading oil circuit 6, control room 71, control are unloaded oilhole 75 and flowed out, brake release.
Claims (9)
1. a kind of brake actuator for engine braking oil path, including arrester（9）And its internal brake oil set
Chamber（13）, brake piston（14）, the braking oil pocket（13）Sidepiece and rocking arm（4）Interior brake circuit（5）, unload oil circuit（6）
Communicate, brake piston（14）Bottom with immediately below it as foot（15）It is connected, as foot（15）Middle ball-and-socket（152）Bottom
Portion and the air valve yoke immediately below it（17）Between formed with valve clearance（18）, it is characterised in that：
The brake actuator also includes adjustment bolt（2）, ball valve（10）, ball valve spring（11）, ball valve spring base（3）With system
Move spring（12）, the adjustment bolt（2）Bottom be located at arrester（9）Inside, adjustment bolt（2）Top pass successively
Arrester（9）, rocking arm（4）Afterwards with rocking arm（4）Outer wall be fixedly connected, adjustment bolt（2）Opened respectively on the side of bottom, bottom surface
Provided with corresponding side oilhole（21）, bottom surface oilhole（22）, brake circuit（5）Through side oilhole（21）Afterwards with bottom surface oilhole（22）
Communicate, bottom surface oilhole（22）Lower section face be provided with ball valve（10）, ball valve（10）Lower section face be provided with ball valve spring
（11）, ball valve spring（11）Bottom and ball valve spring base（3）The spring base bottom outlet of bottom（31）Communicate, ball valve spring base（3）
Contained inside have ball valve（10）, ball valve spring（11）, ball valve spring base（3）Outer cover tripping spring is housed（12）, braking
Spring（12）Outer cover brake piston is housed（14）, brake piston（14）Outer wall braking oil pocket（13）Interior edge arrester
（9）Inwall slide up and down, brake oil pocket（13）It is located at brake piston in side wall（14）, ball valve spring base（3）Between position
Offer braking and unload oilhole（16）With with unloading oil circuit（6）Communicate, brake piston（14）Bottom on be located at arrester（9）Lower section
Position with as foot（15）It is connected.
A kind of 2. brake actuator for engine braking oil path according to claim 1, it is characterised in that：It is described
Adjustment bolt（2）Top pass through adjusting nut（23）With rocking arm（4）Outer wall be fixedly connected.
A kind of 3. brake actuator for engine braking oil path according to claim 1 or 2, it is characterised in that：
The adjustment bolt（2）For T-type structure, including orthogonal spiral shell fixed part（24）Lead to oily portion with spiral shell（25）；The logical oil of the spiral shell
Portion（25）For waist type structure, including the logical oil overhold portion being sequentially connected（251）, lead to oily waist（252）With logical oily bottom（253）, lead to
Oil overhold portion（251）Top surface and spiral shell fixed part（24）Bottom vertical connection, lead to oil overhold portion（251）Bottom surface, lead to oily bottom
（253）Top surface with lead to oily waist（252）The ring-like logical oil groove of a half opening is surrounded altogether（254）, lead to oily waist（252）On
Uniformly offer at least two side oilholes（21）To lead to oily portion with spiral shell（25）The bottom surface oilhole that inside opens up（22）Communicate.
A kind of 4. brake actuator for engine braking oil path according to claim 3, it is characterised in that：It is described
Bottom surface oilhole（22）Top be higher than side oilhole（21）Set, bottom surface oilhole（22）Bottom with lead to oily bottom（253）Bottom
Face flush, and side oilhole（21）Minimum point with lead to oily bottom（253）Top surface intersect.
A kind of 5. brake actuator for engine braking oil path according to claim 4, it is characterised in that：It is described
Bottom surface oilhole（22）Interior and logical oily bottom（253）The position connected offers logical oily chamfering（221）.
A kind of 6. brake actuator for engine braking oil path according to claim 3, it is characterised in that：It is described
Logical oil overhold portion（251）On offer and side oilhole（21）Corresponding logical oily breach（26）, this leads to oily breach（26）Interior bottom
Side（261）Positioned at corresponding side oilhole（21）Surface, the side oilhole（21）Bottom with lead to oily bottom（253）'s
Top surface is connected, and side oilhole（21）, lead to oily bottom（253）Junction with lead to oily bottom（253）Gusset between formed
There is a hole to enclose spacing（27）.
A kind of 7. brake actuator for engine braking oil path according to claim 3, it is characterised in that：It is described
Spiral shell fixed part（24）Gusset on its nearly top position be provided with external screw thread with adjusting nut（23）Threaded connection, the spiral shell
Fixed part（24）The inside on top offer screw connection hole（241）, the screw connection hole（241）Cross section be polygon.
A kind of 8. brake actuator for engine braking oil path according to claim 1 or 2, it is characterised in that：
The ball valve spring base（3）Including base cylinder portion（32）With at least two base claws（33）, the base claw（33）For L-type
Structure, it includes horizontal claw（331）, perpendicular claw（332）, and perpendicular claw（332）Top and horizontal claw（331）The inner be connected
Connect；The base cylinder portion（32）Middle part offer the base plate through holes of insertion（321）With with spring base bottom outlet（31）Communicate, base
Cylinder portion（32）Top perimeter and perpendicular claw（332）Bottom be connected, erect claw（332）Around base cylinder portion（32）Top week
While it is uniformly arranged.
9. a kind of brake actuator for engine braking oil path according to claim 8, it is characterised in that described
Brake actuator also include following technical characteristics in any one or two or three：
Horizontal claw（331）Outer end and the side of falling pawl that extends downwardly（333）It is connected；
Adjacent perpendicular claw（332）Between offer interval pawl gap（34）；
Base plate through holes（321）Diameter be more than spring base bottom outlet（31）Diameter, and base plate through holes（321）Base and spring base
Bottom outlet（31）Top margin between restraining position ring block face is set（35）.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720418620.6U CN206801637U (en) | 2017-04-20 | 2017-04-20 | Brake actuating mechanism for engine brake oil way |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720418620.6U CN206801637U (en) | 2017-04-20 | 2017-04-20 | Brake actuating mechanism for engine brake oil way |
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| Publication Number | Publication Date |
|---|---|
| CN206801637U true CN206801637U (en) | 2017-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968753A (en) * | 2017-04-20 | 2017-07-21 | 东风商用车有限公司 | Brake actuating mechanism for engine brake oil way and use method thereof |
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2017
- 2017-04-20 CN CN201720418620.6U patent/CN206801637U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968753A (en) * | 2017-04-20 | 2017-07-21 | 东风商用车有限公司 | Brake actuating mechanism for engine brake oil way and use method thereof |
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