CN102050098B - Hydraulic dynamic brake operating system for tractor - Google Patents
Hydraulic dynamic brake operating system for tractor Download PDFInfo
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- CN102050098B CN102050098B CN2010105944637A CN201010594463A CN102050098B CN 102050098 B CN102050098 B CN 102050098B CN 2010105944637 A CN2010105944637 A CN 2010105944637A CN 201010594463 A CN201010594463 A CN 201010594463A CN 102050098 B CN102050098 B CN 102050098B
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- valve
- dynamic brake
- oil
- pressure
- tractor
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- 239000012530 fluid Substances 0.000 claims description 18
- 238000004146 energy storage Methods 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 239000002828 fuel tank Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 abstract description 6
- 238000005086 pumping Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 69
- 230000000694 effects Effects 0.000 description 4
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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Abstract
The invention discloses a hydraulic dynamic brake operating system for a tractor. The hydraulic dynamic brake operating system mainly comprises an oil suction filter, an oil pump, an overflow valve, a check valve 1, a throttling port, a high-pressure oil filter, a liquid filling valve, a pressure gauge, an accumulator, a brake low pressure alarming switch, a dual-circuit dynamic brake valve, a left dynamic brake valve, a shuttle valve, a check valve 2, a brake taillight pressure switch, a right dynamic brake valve, a pressure setting piece and a pressure compensator. The hydraulic dynamic brake operating system is characterized in that the oil suction filter is arranged in an oil tank of the tractor; the oil pump is arranged on one side of the tractor; the oil suction filter is connected with the oil pump through an oil pipe; the liquid filling valve is arranged on one side of the tractor, and is connected with the oil pump through a pipeline; and the dual-circuit dynamic brake valve is mounted on the bottom plate of a driving cab, and is connected with the liquid filling valve through an oil pipe. The system eliminates other pumping sources by dint of the hydraulic steering system of the tractor, and fully meets the requirements on the brake of the whole tractor and the braking performance of a high-power tractor. The structure of the system is compact and meticulous.
Description
Technical field
The invention belongs to the trac. field, relate to a kind of used with tractor fluid pressure type dynamic brake maneuvering system.
Background technology
At present, on the large power wheel tractor that China produces, its brake system is the control of fluid pressure type manpower mostly.It pumps into the hydraulic oil in the brake pump in the drg through the pressure that the operator is applied on the stretcher, makes it carry out the trac. braking.Because operator's legpower is limited, so the oil pressure that is delivered in the drg is also limited.Along with the continuous increase of trac. power section, complete vehicle weight is also in continuous increase, and the brake-pressure of existing apparatus can not satisfy the car load braking requirement.
For satisfying the demand of the trac. power that constantly increases, cover braking control system that be complementary with it and that can satisfy all deceleration and stopping performancies of complete machine must be arranged.
Summary of the invention
The object of the present invention is to provide a kind of simple in structure, use used with tractor fluid pressure type dynamic brake maneuvering system reliable, easy operation.It passes through prefill valve, energy storage, and elements such as servo-steering two-way dynamic brake valve provide the actv. brake-pressure to brake unit, to satisfy the demand of trac. complete machine braking.
The present invention can achieve the above object through following technical scheme: used with tractor fluid pressure type dynamic brake maneuvering system mainly comprises oil suction oil filter, oil pump, by pass valve, check valve, restriction, high-pressure filter, prefill valve, compression indicator, energy storage, braking low pressure warning switch, two-way dynamic brake valve, left dynamic brake valve, shuttle valve, check valve, braking taillight pressure switch, right dynamic brake valve, pressure setting member, pressure compensator; The oil suction oil filter is contained in the fuel tank of trac., and oil pump is installed in a side of trac.; Be connected through oil pipe between oil suction oil filter and the oil pump.Prefill valve is contained in a side of trac., is connected with oil pump through pipeline; Two-way dynamic brake valve is installed on the operator's compartment base plate, and two-way dynamic brake valve is connected through oil pipe with prefill valve.
Be arranged side by side in the prefill valve pressure compensator and pressure setting member are linked up mutually through inner oil duct, and are communicated with the outlet of check valve through inner oil duct; By pass valve is connected through inner oil duct with pressure compensator; High-pressure filter and check valve are serially connected through restriction; Compression indicator, energy storage, braking low pressure warning switch are serially connected, and communicate with the oil outlet of check valve through inner oil duct.
The both sides of two-way dynamic brake valve split left dynamic brake valve, right dynamic brake valve; Intermediate arrangement has check valve, braking taillight pressure switch, link together through shuttle valve, and through inner oil duct and left dynamic brake valve, right dynamic brake valve communicates.
The present invention can reach following beneficial effect: can use the tractor hydraulic steering swivel system, needn't look for pumping source more in addition; System has fully satisfied each requirement of complete machine braking; Satisfied the deceleration and stopping performance of large tractor; System architecture is rigorous, and is careful.
Description of drawings
Fig. 1 is a used with tractor fluid pressure type dynamic brake maneuvering system structural representation of the present invention;
Fig. 2 is used with tractor fluid pressure type dynamic brake maneuvering system of the present invention left side braking mode scheme drawing;
Fig. 3 is the used with tractor fluid pressure type dynamic brake maneuvering system braking mode scheme drawing of left and right while of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done further description.Shown in Fig. 1～3; Used with tractor fluid pressure type dynamic brake maneuvering system mainly comprises oil suction oil filter 1, oil pump 2, by pass valve 3, check valve 4, restriction 5, high-pressure filter 6, prefill valve 7, compression indicator 8, energy storage 9, braking low pressure warning switch 10, two-way dynamic brake valve 11, left dynamic brake valve 12, shuttle valve 13, check valve 14, braking taillight pressure switch 15, right dynamic brake valve 16, pressure setting member 17, pressure compensator 18; Oil suction oil filter 1 is contained in the fuel tank of trac., and oil pump 2 is installed in a side of trac.; Be connected through oil pipe between oil suction oil filter 1 and the oil pump 2.Prefill valve 7 is contained in a side of trac., is connected with oil pump 2 through pipeline; Two-way dynamic brake valve 11 is installed on the operator's compartment base plate, and two-way dynamic brake valve 11 and prefill valve 7 are connected through oil pipe.
Comprise by pass valve 3, check valve 4, restriction 5, high-pressure filter 6, compression indicator 8, energy storage 9, braking low pressure warning switch 10, pressure setting member 17, pressure compensator 18 in the prefill valve 7; Be arranged side by side in the prefill valve 7 pressure compensator 18 and pressure setting member 17 are linked up mutually through inner oil duct, and are communicated through the outlet of inner oil duct with check valve 4; By pass valve 3 is connected through inner oil duct with pressure compensator 18; High-pressure filter 6 is serially connected through restriction 5 with check valve 4; Compression indicator 8, energy storage 9, braking low pressure warning switch 10 are serially connected, and communicate through the oil outlet of inner oil duct with check valve 4.
Comprise left dynamic brake valve 12, shuttle valve 13, check valve 14, braking taillight pressure switch 15, right dynamic brake valve 16 in the two-way dynamic brake valve 11; The both sides of two-way dynamic brake valve 11 split left dynamic brake valve 12, right dynamic brake valve 16; Intermediate arrangement has check valve 14, braking taillight pressure switch 15, link together through shuttle valve 13, and through inner oil duct and left dynamic brake valve 12, right dynamic brake valve 16 communicates.
Under the incipient state; Prefill valve 7 parts: the entrance point P of prefill valve 7 internal pressure compensators 18 delivered to pressure oil through oil suction oil filter 1 by oil pump 2 oil; Pressure compensator 18 initial conditions are positioned at right position under the effect of spring force; P mouth oil gets into energy storage 9 and carries out topping up through high-pressure filter 6, restriction 5 check valves 4 one tunnel through the oil duct in the pressure compensator 18, and one the tunnel gets into pressure setting member 17; Pressure setting member 17 initial conditions are in position, a left side under the right-hand member action of the spring; The fluid one tunnel that gets into pressure setting member 17 acts directly on the left end of pressure compensator 18, and pressure compensator 18 still is in right position under the effect of pressure oil and spring; Another road then acts on the left end of pressure compensator 18 as the signal oil circuit; When oil pump 2 came the spring setting pressure of oil pressure overpressure setting member 17, pressure setting member 17 was in position, a left side under the effect of left end oil pressure and spring, and the fluid in the signal oil circuit communicates with fuel tank.Pressure compensator 18 is in position, a left side under the effect of pressure oil and spring.Oil pump comes oil directly to get into next chamber, and check valve 4 is closed.So far the topping up process finishes, and the flow of pump passes through prefill valve with the pressure drop of minimum.
Two-way dynamic brake valve 11 parts: two-way dynamic brake valve 11 comprise left dynamic brake valve 12, shuttle valve 13, check valve 14, braking taillight pressure switch 15, right dynamic brake valve 16, etc. element; It can satisfy a left side, the one side brake of right wheel, also linkage.
Incipient state: oil pump comes oil to get into the oil suction chamber of left dynamic brake valve 12, right dynamic brake valve 16, is not stepping on a left side, and during right steps, oil pump comes oil not get into brake chamber; The fluid of left and right brake chamber is through the straight-through fuel tank of the inside oil duct of left dynamic brake valve 12, right dynamic brake valve 16; The brake-pressure that braking taillight pressure switch 15 is lower than setting is in opening, and the braking taillight does not work.
When chaufeur is stepped on left brake pedal (monolateral is example with left side braking); The oil that gets into two-way dynamic brake valve 11 gets into left dynamic brake valve 12, and pushes shuttle valve 13 open through left dynamic brake valve 12 internal oil channels one tunnel, gets into braking taillight pressure switch 15; When pressure surpasses braking taillight pressure switch 15 setting pressures; Braking taillight pressure switch 15 closures, the braking taillight is bright, reminds the retinue vehicle; Another road is then directly pushed check valve 14 open and is got into left brake wheel through left dynamic brake valve 12 internal oil channels and carry out one side brake; Brake-pressure feeds back to the cavity of resorption of left dynamic brake valve 12 simultaneously, balances each other with treadle effort and spring force, keeps fluid certain through the pressure reduction of left dynamic brake valve 12, makes the brake noise liquid measure that obtains left brake wheel only relevant in the aperture of valve; Guaranteed the smooth-going of left braking; Right dynamic brake valve 16 cuts out simultaneously, and right wheel is not braked;
When the interlock of left and right sides brake pedal; When chaufeur is stepped on brake pedal; The oil that gets into two-way dynamic brake valve 11 gets into the oil suction chamber of left dynamic brake valve 12 and right dynamic brake valve 16 simultaneously; And open check valve entering left and right sides brake wheel separately with the inside oil duct of crossing separately separately, carry out the braking of trac.; Shuttle valve 13 one tunnel imports braking taillight pressure switch 15 with pressure oil, when pressure surpasses braking taillight pressure switch 15 setting pressures, and braking taillight pressure switch 15 closures, the braking taillight is bright, reminds the retinue vehicle; Another road balance to the pressure of left and right sides brake chamber, about having guaranteed braking synchronously; Brake-pressure feeds back to left dynamic brake valve 12 simultaneously; The cavity of resorption of right dynamic brake valve 16; Balance each other with treadle effort and spring force; Keep fluid through left dynamic brake valve 12, the pressure reduction of right dynamic brake valve 16 is certain, makes the brake noise liquid measure that obtains left brake wheel and right brake wheel only relevant in the aperture of valve; Guaranteed the smooth-going of braking.
The supercharging pressure of energy storage 9 and filling amount have guaranteed to work as hydraulic system fails, when oil pump 2 can't replenish fluid, still can brake-pressure and flow more than 20 times be provided to two-way dynamic brake valve 11; Guaranteed the safety arrestment of trac..
When the oil liquid pressure that arrives two-way dynamic brake valve 11 was lower than the setting pressure of braking low pressure warning switch 10, braking low pressure warning switch 10 was reported to the police, and warned chaufeur inspection hydraulic efficiency pressure system.
When the pressure of energy storage 9 was lower than setting pressure, prefill valve 7 parts started, and are charged to setting value until energy storage 9.
When trac. glancing impact not, hydraulic oil directly gets into working oil path.
Each parts couples together by the pipeline and the sealing member of systematic schematic diagram by different latus rectums, is arranged in the various piece of the complete machine of trac., to satisfy the braking requirement of complete machine.
Claims (3)
1. a used with tractor fluid pressure type dynamic brake maneuvering system comprises: oil suction oil filter (1), oil pump (2), prefill valve (7), two-way dynamic brake valve (11); Comprise by pass valve (3), check valve (4), restriction (5), high-pressure filter (6), compression indicator (8), energy storage (9), braking low pressure warning switch (10), pressure setting member (17), pressure compensator (18) in the said prefill valve (7); Comprise left dynamic brake valve (12), shuttle valve (13), check valve (14), braking taillight pressure switch (15), right dynamic brake valve (16) in the said two-way dynamic brake valve (11); It is characterized in that: oil suction oil filter (1) is contained in the fuel tank of trac., and oil pump (2) is installed in a side of trac.; Be connected through oil pipe between oil suction oil filter (1) and the oil pump (2); Prefill valve (7) is contained in a side of trac., is connected with oil pump (2) through pipeline; Two-way dynamic brake valve (11) is installed on the operator's compartment base plate, and two-way dynamic brake valve (11) is connected through oil pipe with prefill valve (7).
2. used with tractor fluid pressure type dynamic brake maneuvering system according to claim 1; It is characterized in that: pressure compensator (18) and pressure setting member (17) are arranged side by side in the prefill valve (7); Link up mutually through inner oil duct, and communicate through of the outlet of inner oil duct with check valve (4); By pass valve (3) is connected through inner oil duct with pressure compensator (18); High-pressure filter (6) is serially connected through restriction (5) with check valve (4); Compression indicator (8), energy storage (9), braking low pressure warning switch (10) are serially connected, and communicate through the oil outlet of inner oil duct with check valve (4).
3. used with tractor fluid pressure type dynamic brake maneuvering system according to claim 1 is characterized in that: the both sides of two-way dynamic brake valve (11) split left dynamic brake valve (12), right dynamic brake valve (16); Intermediate arrangement has check valve (14), braking taillight pressure switch (15), links together through shuttle valve (13), and communicates with left dynamic brake valve (12), right dynamic brake valve (16) through inner oil duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105944637A CN102050098B (en) | 2010-12-20 | 2010-12-20 | Hydraulic dynamic brake operating system for tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105944637A CN102050098B (en) | 2010-12-20 | 2010-12-20 | Hydraulic dynamic brake operating system for tractor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102050098A CN102050098A (en) | 2011-05-11 |
| CN102050098B true CN102050098B (en) | 2012-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105944637A Expired - Fee Related CN102050098B (en) | 2010-12-20 | 2010-12-20 | Hydraulic dynamic brake operating system for tractor |
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| CN (1) | CN102050098B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102514564A (en) * | 2012-01-04 | 2012-06-27 | 江苏柳工机械有限公司 | Power cut-off electric control system for unilateral driving brake of engineering vehicle |
| CN102561446B (en) * | 2012-01-17 | 2015-01-07 | 中钢集团衡阳重机有限公司 | Hydraulic control system of carry scraper |
| CN103818546A (en) * | 2012-11-16 | 2014-05-28 | 哈尔滨飞机工业集团有限责任公司 | Operating power steering system for airplane hydraulic control |
| CN104875736A (en) * | 2015-06-09 | 2015-09-02 | 成都衔石科技有限公司 | Energy accumulator for auxiliary control of automobile |
| CN105035052A (en) * | 2015-08-10 | 2015-11-11 | 第一拖拉机股份有限公司 | Low-pressure energy-assisted braking system for brake of high-power wheeled tractor |
| CN110529527A (en) * | 2019-09-25 | 2019-12-03 | 洛阳路通重工机械有限公司 | A kind of auxiliary brake system of all-hydraulic single driving single-drum road roller |
| CN114103900B (en) * | 2020-08-31 | 2023-03-14 | 比亚迪股份有限公司 | Hydraulic braking system and forklift |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1212661A (en) * | 1996-03-04 | 1999-03-31 | 沃尔沃轮式装载机股份公司 | Hydraulic vehicle brake system |
| CN2663255Y (en) * | 2003-11-25 | 2004-12-15 | 东风新疆汽车有限公司 | Modified power-assisted hydraulic system of turning machine |
| CN101177139A (en) * | 2007-12-10 | 2008-05-14 | 常州科研试制中心有限公司 | Bidirectional steering vehicle braking transmission system |
| CN201089453Y (en) * | 2007-10-22 | 2008-07-23 | 王世岩 | Brake operating device for big power wheeled tractor |
| CN201932145U (en) * | 2010-12-20 | 2011-08-17 | 中国一拖集团有限公司 | Hydraulic power brake control system for tractor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003291833A (en) * | 2002-04-03 | 2003-10-15 | Hitachi Constr Mach Co Ltd | Steering device for work vehicle |
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2010
- 2010-12-20 CN CN2010105944637A patent/CN102050098B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1212661A (en) * | 1996-03-04 | 1999-03-31 | 沃尔沃轮式装载机股份公司 | Hydraulic vehicle brake system |
| CN2663255Y (en) * | 2003-11-25 | 2004-12-15 | 东风新疆汽车有限公司 | Modified power-assisted hydraulic system of turning machine |
| CN201089453Y (en) * | 2007-10-22 | 2008-07-23 | 王世岩 | Brake operating device for big power wheeled tractor |
| CN101177139A (en) * | 2007-12-10 | 2008-05-14 | 常州科研试制中心有限公司 | Bidirectional steering vehicle braking transmission system |
| CN201932145U (en) * | 2010-12-20 | 2011-08-17 | 中国一拖集团有限公司 | Hydraulic power brake control system for tractor |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2003-291833A 2003.10.15 |
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| CN102050098A (en) | 2011-05-11 |
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Owner name: FIRST TRACTOR CO., LTD. Free format text: FORMER OWNER: CHINA YITUO GROUP CO., LTD. Effective date: 20130725 |
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Free format text: CORRECT: ADDRESS; FROM: 471039 LUOYANG, HENAN PROVINCE TO: 471004 LUOYANG, HENAN PROVINCE |
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Effective date of registration: 20130725 Address after: 471004 Jianshe Road, Jianxi, Henan, No. 154, Patentee after: FIRST TRACTOR Co.,Ltd. Address before: 471039 No. 39, Xiyuan Road, Jianxi District, Henan, Luoyang Patentee before: YTO Group Corp. |
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