CN105156168A - Slide rod type engine brake actuating device - Google Patents
Slide rod type engine brake actuating device Download PDFInfo
- Publication number
- CN105156168A CN105156168A CN201510630785.5A CN201510630785A CN105156168A CN 105156168 A CN105156168 A CN 105156168A CN 201510630785 A CN201510630785 A CN 201510630785A CN 105156168 A CN105156168 A CN 105156168A
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- slide bar
- slide rod
- control
- sliding rod
- casing
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Abstract
The invention relates to a slide rod type engine brake actuating device. A control slide rod hole perpendicular to an inner hole is formed above the inner hole under the inside of a box body, and a through hole formed in the top end of the box body is communicated with the control slide rod hole; an actuating slide rod clamp ring is arranged at the opening end of the inner hole; the lower portion, in the inner hole, of the actuating slide rod is in clamp connection with the actuating slide rod clamp ring; a middle step of the actuating slide rod abuts against an inner step of the box body through a control slide rod spring; a control slide rod is arranged in a control slide rod hole in the opening end of the control slide rod hole; one end of the control slide rod abuts against the box body through the control slide rod spring, and the other end of the control slide rod is connected with the control slide rod clamp ring; the opening end of the control slide rod hole is communicated with an oil channel of a rocker, and an intermediate annular groove is formed between steps at the two ends of the control slide rod; and the top end of the actuating slide rod is of an arc structure matched with a cylindrical arc of the control slide rod, and the top end of the actuating slide rod abuts against the control slide rod. According to the slide rod type engine brake actuating device, a control valve is avoided, the cost is reduced, and the modularity and the serialization are achieved.
Description
Technical field
The present invention relates to a kind of actuating device, relate to a kind of sliding rod type engine braking actuating device in particular, belong to vehicle engine braking technical field.
Background technique
Engine braking refers to oil-break, unclamps clutch, clutch is on certain gear and opens engine braking switch, its resistance to compression pression, internal friction and intake and exhaust resistance utilizing the compression stroke of motor to produce forms braking action to driving wheel, thus realizes the technology of car load deceleration or steady descending.
At present, existing engine braking apparatus is generally hydraulically powered braking device, utilizes the oil sprayer driving cam of motor itself as power source, the exhaust valve controlling motor thus realize engine braking.But this kind braking device component number is many, structure is more complicated, is unfavorable for the layout of motor.Simultaneously, due to the compressibility of hydraulic system, affect by factors such as engine oil pressure, temperature and air contents, a lot of adverse influence can be produced: first to braking system, due to braking valve open lift and rotation speed relation larger, so when carrying out braking force and optimizing, can not ensure that the braking force of basic, normal, high rotating speed is optimum simultaneously.Second, the high flexibility of liquid causes braking valve when opening at a high speed, machine oil compresses in a large number, and braking valve is opened lift and reduced, simultaneously because exhaust does not reach requirement, in-cylinder pressure declines limited, larger when causing air valve normally opened by force rate, cause machine oil pressure to become large further, cause braking valve to open lift and reduce, so just, form a kind of vicious circle, engine braking finally also may be caused to lose efficacy; Therefore, in hydraulically powered engine braking system, necessary limiting engine rotating speed, the impact that the diameter performing piston reduces because flexible hydraulic brings must be increased simultaneously, but so substantially increase the volume of whole engine braking system, weight, cause that hydraulic system inertia is large, low-response.
Summary of the invention
The object of the invention is to the defects such as, low-response more complicated for existing hydraulically powered engine braking apparatus structure, the distortion of rotating speed limiter stage hydraulic pressure, a kind of sliding rod type engine braking actuating device is provided.
the present invention for achieving the above object, adopt technical solution to be:a kind of sliding rod type engine braking actuating device, comprise casing, described casing is arranged on the air valve end of rocking arm, the endoporus along valve opening direction is provided with below box house, the top of described endoporus is provided with perpendicular control sliding rod hole, casing top is provided with through hole and is connected with control sliding rod hole, described bore openings end is provided with and performs slide bar snap ring, execution slide bar is provided with in endoporus, described execution slide bar bottom and the clamping of execution slide bar snap ring phase, perform ladder in the middle part of slide bar to be offseted by control slide bar spring and box house step, described control sliding rod hole opening end is provided with and controls slide bar snap ring, control to be provided with control slide bar in sliding rod hole, described control slide bar one end is offseted by control slide bar spring and casing, control the slide bar the other end to be connected with control slide bar snap ring, control sliding rod hole opening end to be connected with the oil circuit of rocking arm, and control slide bar is the cylindrical structurals of two ends with step, controlling between the step of slide bar two ends is middle annular groove, the top performing slide bar is the arcuate structure matched with the cylindrical radial controlling slide bar, perform top end of sliding rod to offset with control slide bar, perform slide bar bottom and air valve yoke or air valve to offset.
Described casing periphery is worm structure, and casing is arranged in rocking arm by screw thread.
Described through hole is interior hexagonal structure.
compared with prior art, the invention has the beneficial effects as follows:
1, adopt modular design, structure is simple.The present invention adopts modular design, casing can modular manufacturing, the control slide bar of box house and perform slide bar and form braking by being rigidly connected of diverse location, can overcome that hydraulic brake is compressible, volume is large, quality is large, low-response, by the larger problem of influence of rotation speed; Simultaneously do not need control valve, reduce costs, itself assembly technology is simple, can modularization, seriation.
2, simultaneously the present invention is owing to controlling slide bar and performing slide bar for being rigidly connected, and no matter brakes or under non-brake state, whole rocking arm is and is rigidly connected, better to the stability of valve opening stroke when being hit.
3, the present invention directly by brake clearance Integration Design in the structure of this braking device, control brake clearance by the groove size controlled on slide bar, reduce band brake motor and debug the time in main engine factory, optimize complete machine cost.
Accompanying drawing explanation
Fig. 1 is the present invention's application structure schematic diagram in distribution device.
Fig. 2 is the structural representation of the present invention when braking is not opened.
Fig. 3 is the structural representation of the present invention when braking unlatching.
Fig. 4 controls Slide bar structure schematic diagram in the present invention.
Fig. 5 performs Slide bar structure schematic diagram in the present invention.
In figure, cam 1, rocking arm 2, casing 3, air valve yoke 4, valve 5, through hole 6, controls slide bar snap ring 7, controls slide bar 8, controls slide bar spring 9, performs slide bar 10, performs slide bar spring 11, performs slide bar snap ring 12, middle annular groove 13.
Embodiment
Illustrate that the present invention is described in further detail with embodiment below in conjunction with accompanying drawing.
See Fig. 1 to Fig. 2, a kind of sliding rod type engine braking actuating device, comprises casing 3, and casing 3 is the structure casing of similar sub warhead, and casing 3 can modular manufacturing, and it is detachable; Described casing 3 is arranged on the air valve end of rocking arm 2, indirectly drives valve 5 by cam 1 Direct driver valve 5 or by air valve yoke 4.Casing 3 lower inside is provided with the endoporus along valve 5 opening direction, and the top of described endoporus is provided with perpendicular control sliding rod hole; Casing 3 top is provided with through hole 6 and is connected with control sliding rod hole, and control the inner car of sliding rod hole has a trench structure simultaneously, makes the machine oil in control sliding rod hole can not cause resistance to slide bar motion.Described bore openings end is provided with and performs slide bar snap ring 12, is provided with and performs slide bar 10 in endoporus, and performing slide bar 10 can move up and down; Described execution slide bar 10 bottom and the clamping of execution slide bar snap ring 12 phase, perform slide bar snap ring 12 spacing to execution slide bar 10; Perform ladder in the middle part of slide bar 10 to offset with casing 3 interior step by performing slide bar spring 11, perform slide bar spring 11 and limit coming off of execution slide bar 10, and the impact that execution slide bar spring 11 allows execution slide bar 10 contact with air valve or air valve yoke 4 all the time at the volley, gap can be avoided to cause, perform slide bar spring 11 rigidity herein larger.Described control sliding rod hole opening end is provided with and controls slide bar snap ring 7, control to be provided with in sliding rod hole to control slide bar 8, described control slide bar 8 one end offsets with casing 3 by controlling slide bar spring 9, controls the restriction of slide bar spring 9 and controls coming off of slide bar 8, control slide bar spring 9 rigidity herein smaller; Control slide bar 8 the other end to be connected with control slide bar snap ring 7, described control slide bar snap ring 7 is spacing to control slide bar 8; Control sliding rod hole opening end to be connected with the oil circuit of rocking arm 2.And control slide bar 8 is the cylindrical structurals of two ends with step, controlling between the step of slide bar 8 two ends is middle annular groove 13, and namely controlling slide bar 8 is thick, the middle little column constructions in a two; The difference controlling the step at slide bar 8 two ends and the radius of middle annular groove 13 designs according to engine braking gap, only needs to adjust intake and exhaust valve clearance during installation.The top performing slide bar 10 is the arcuate structure matched with the cylindrical radial controlling slide bar 8, perform slide bar 10 top and control slide bar 8 and offset, perform the arcuate structure on slide bar 10 top and be convenient to perform under braking state with non-brake state that slide bar 10 all contacts fully with control slide bar 8, uniform force; Perform slide bar 10 bottom and air valve yoke 4 or air valve 5 to offset.
Further, described casing 3 periphery is worm structure, and casing 3 is arranged in rocking arm 2 by screw thread; The worm structure of casing 3 periphery is convenient to adjustment installation and brake clearance.
Further, described through hole 6 is interior hexagonal structure.
See Fig. 1 to Fig. 3, this dynamic actuating device is arranged on rocking arm 2, and rocking arm 2 is herein on engine exhaust rocking arm or special brake rocker arm.Performing bottom slide bar 10 and contact with air valve yoke 4 or air valve 5, performing slide bar 10 by controlling slide bar 8 motion control engine braking and non-brake state; Control slide bar 8 and come control position by the electromagnetic valve machine oil break-make on oil feeding line again: electromagnetic valve oil circuit break-make, if closed electromagnetic valve, oil circuit is obstructed, if solenoid valve is opened, then oil circuit leads to.
See Fig. 1 to Fig. 2, do not work when engine braking, solenoid valve on oil feeding line is not opened, the control sliding rod hole controlling slide bar snap ring 7 place is not oil-filled, control slide bar 8 under the effect controlling slide bar spring 9, prop up control slide bar snap ring 7, now control slide bar 8 specifically shown in Figure 2 with the position relationship performing slide bar 10.Now when cam 1 drives rocking arm 2, rocking arm 2 by this braking executive device driving air valve yoke 4 or Direct driver valve 5, perform slide bar 10 and overcome execution slide bar spring 11 active force, the top performing slide bar 10 contacts with the middle annular groove 13 controlling slide bar 8, and the final valve 5 that drives is opened; This process is comparatively large owing to controlling slide bar 10 displacement distance, and the braking boss in cam 1 does not have an impact to valve 5, only normally opens and closes exhaust valve, so engine braking is not opened.
See Fig. 1, Fig. 3, when ato unit is braked, solenoid valve on oil feeding line is opened, the control sliding rod hole controlling slide bar snap ring 7 place is oil-filled, control slide bar 8 under the effect of engine oil pressure, overcome the active force controlling slide bar spring 9, specifically shown in Figure 3, now control slide bar 8 and move to control slide bar spring 9 side and control slide bar 8 and overcome control slide bar spring 9 power to spacing place completely, now namely control the inwall that slide bar 8 right-hand member props up casing 6.Now when cam 1 drives rocking arm 2, rocking arm 2 by this braking executive device driving air valve yoke 4 or Direct driver valve 5, perform slide bar 10 and overcome execution slide bar spring 11 active force, the top performing slide bar 10 acts on the step surface of control slide bar 8 left end; Now less owing to overcoming gap stroke, the braking boss on cam 1 works after overcoming gap, and cam 1 can control valve 5 and open valve 5 at compression stroke top dead center and aspirating stroke somewhere, forms engine braking, thus realizes braking at exhaust valve.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, said structure all should be considered as belonging to protection scope of the present invention.
Claims (3)
1. a sliding rod type engine braking actuating device, it is characterized in that: comprise casing (3), described casing (3) is arranged on the air valve end of rocking arm (2), casing (3) lower inside is provided with the endoporus along valve (5) opening direction, the top of described endoporus is provided with perpendicular control sliding rod hole, casing (3) top is provided with through hole (6) and is connected with control sliding rod hole, described bore openings end is provided with and performs slide bar snap ring (12), be provided with in endoporus and perform slide bar (10), described execution slide bar (10) bottom and snap ring (12) the phase clamping of execution slide bar, perform slide bar (10) middle part ladder to offset with casing (3) interior step by controlling slide bar spring (11), described control sliding rod hole opening end is provided with and controls slide bar snap ring (7), control to be provided with in sliding rod hole to control slide bar (8), described control slide bar (8) one end offsets with casing (3) by controlling slide bar spring (9), control slide bar (8) the other end to be connected with control slide bar snap ring (7), control sliding rod hole opening end to be connected with the oil circuit of rocking arm (2), and control slide bar (8) for two ends are with the cylindrical structural of step, controlling between the step of slide bar (8) two ends is middle annular groove (13), the top performing slide bar (10) is the arcuate structure matched with the cylindrical radial controlling slide bar (8), perform slide bar (10) top to offset with control slide bar (8), perform slide bar (10) bottom and air valve yoke (4) or air valve (5) to offset.
2. a kind of sliding rod type engine braking actuating device according to claim 1, is characterized in that: described casing (3) periphery is worm structure, and casing (3) is arranged in rocking arm (2) by screw thread.
3. a kind of sliding rod type engine braking actuating device according to claim 1, is characterized in that: described through hole (6) is interior hexagonal structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510630785.5A CN105156168B (en) | 2015-09-29 | 2015-09-29 | A kind of slide bar type engine braking executive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510630785.5A CN105156168B (en) | 2015-09-29 | 2015-09-29 | A kind of slide bar type engine braking executive device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105156168A true CN105156168A (en) | 2015-12-16 |
| CN105156168B CN105156168B (en) | 2018-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510630785.5A Active CN105156168B (en) | 2015-09-29 | 2015-09-29 | A kind of slide bar type engine braking executive device |
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| Country | Link |
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| CN (1) | CN105156168B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374713A (en) * | 2019-08-16 | 2019-10-25 | 浙江黎明智造股份有限公司 | A kind of engine braking apparatus |
| CN112648040A (en) * | 2020-12-22 | 2021-04-13 | 东风商用车有限公司 | Engine compression release type brake and braking method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004183515A (en) * | 2002-11-29 | 2004-07-02 | Nippon Piston Ring Co Ltd | Valve mechanism |
| CN201513212U (en) * | 2009-08-31 | 2010-06-23 | 上海尤顺汽车部件有限公司 | Modified driving mechanism used for engine braking |
| US20140182539A1 (en) * | 2012-12-18 | 2014-07-03 | Jacobs Vehicle Systems, Inc. | Rocker latch for controlling engine valve actuation |
| CN103917762A (en) * | 2011-09-21 | 2014-07-09 | 雅各布斯车辆系统公司 | Method and system for engine cylinder decompression |
| CN205172670U (en) * | 2015-09-29 | 2016-04-20 | 东风商用车有限公司 | Slide -bar -type engine brake final controlling element |
-
2015
- 2015-09-29 CN CN201510630785.5A patent/CN105156168B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004183515A (en) * | 2002-11-29 | 2004-07-02 | Nippon Piston Ring Co Ltd | Valve mechanism |
| CN201513212U (en) * | 2009-08-31 | 2010-06-23 | 上海尤顺汽车部件有限公司 | Modified driving mechanism used for engine braking |
| CN103917762A (en) * | 2011-09-21 | 2014-07-09 | 雅各布斯车辆系统公司 | Method and system for engine cylinder decompression |
| US20140182539A1 (en) * | 2012-12-18 | 2014-07-03 | Jacobs Vehicle Systems, Inc. | Rocker latch for controlling engine valve actuation |
| CN205172670U (en) * | 2015-09-29 | 2016-04-20 | 东风商用车有限公司 | Slide -bar -type engine brake final controlling element |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374713A (en) * | 2019-08-16 | 2019-10-25 | 浙江黎明智造股份有限公司 | A kind of engine braking apparatus |
| CN112648040A (en) * | 2020-12-22 | 2021-04-13 | 东风商用车有限公司 | Engine compression release type brake and braking method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105156168B (en) | 2018-12-07 |
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