CN114278621A - Power reversing power high-low gear hydraulic system special for tractor - Google Patents
Power reversing power high-low gear hydraulic system special for tractor Download PDFInfo
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- CN114278621A CN114278621A CN202111513243.1A CN202111513243A CN114278621A CN 114278621 A CN114278621 A CN 114278621A CN 202111513243 A CN202111513243 A CN 202111513243A CN 114278621 A CN114278621 A CN 114278621A
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- 230000001050 lubricating effect Effects 0.000 claims abstract description 51
- 238000010521 absorption reaction Methods 0.000 claims abstract description 7
- 238000005461 lubrication Methods 0.000 claims description 10
- 230000003139 buffering effect Effects 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000035484 reaction time Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 39
- 230000008859 change Effects 0.000 description 5
- 230000006872 improvement Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention discloses a power reversing power high-LOW gear hydraulic system special for a tractor, which comprises an oil absorption filter, a constant flow pump, a high-pressure filter, a full-hydraulic steering gear, a steering oil cylinder, a system pressure control valve, a lubricating pressure control valve, an energy accumulator, a first electromagnetic reversing valve, a second electromagnetic reversing valve, an F clutch control valve, an R clutch control valve, a PTO clutch control valve, a lubricating filter control valve, an HI clutch control valve and an LOW clutch control valve, wherein the traditional mechanical reversing is replaced by the power reversing power high-LOW gear hydraulic system, the switching of the valves is stable and reliable under different action requirements, no impact exists, the action is sensitive, and the working requirements under different requirements can be realized during the reaction time period; the electrification degree is high, the control accuracy of the proportional valve is higher, and the gears, the shafts and the like can be lubricated and cooled, so that the service life of mechanical parts is protected; and the degree of automation is high, the overall spatial arrangement of the hydraulic system is reasonable, and the maintenance is convenient.
Description
Technical Field
The invention relates to the field related to power reversing of tractors, in particular to a power reversing high-low gear hydraulic system special for a tractor.
Background
The tractor is a self-propelled power machine used for dragging and driving the operation machine to complete various mobile operations, and can also be used as fixed operation power; the system consists of an engine, a transmission system, a walking system, a steering system, a hydraulic suspension system, a power output system, an electric instrument system, a driving control system, a traction system and other systems or devices; the tractor in the prior art usually adopts mechanical reversing and high-low gear, has complex operation and low automation degree, and is inconvenient for lubricating and cooling gears, shafts and the like.
Disclosure of Invention
Accordingly, to address the above-described deficiencies, the present invention provides a power reversing high and low range hydraulic system for a tractor.
The invention is realized in such a way that a power reversing power high-LOW gear hydraulic system specially used for a tractor is constructed, the device comprises an oil suction filter, a constant flow pump, a high-pressure filter, a full-hydraulic steering gear, a steering oil cylinder, a system pressure control valve, a lubricating pressure control valve, an energy accumulator, a first electromagnetic reversing valve, a second electromagnetic reversing valve, an F clutch control valve, an R clutch control valve, a PTO clutch control valve, a lubricating filter control valve, a HI clutch control valve, a LOW clutch control valve, a four-wheel drive clutch control valve, a differential lock control valve, a C6 lubricating control valve, a C7 lubricating control valve and a C8 lubricating throttle valve, one end of the oil suction filter is connected with the constant flow pump, the other end of the constant flow pump is connected with the full-hydraulic steering gear through the high-pressure filter, one end of the full-hydraulic steering gear is connected with the steering oil cylinder, and the oil return end of the full-hydraulic steering gear is connected with the system pressure control valve, generating 2.2MPa pressure oil, when electric signals are simultaneously sent to the first electromagnetic directional valve and the second electromagnetic directional valve, the oil reaches the front of valve ports of an F clutch control valve, an R clutch control valve, a PTO clutch control valve, an HI clutch control valve, a LOW clutch control valve, a four-wheel drive clutch control valve and a differential lock control valve, the output end of the system pressure control valve is connected with a lubricating pressure control valve, an energy accumulator and a lubricating filter control valve, and the other end of the lubricating filter control valve is connected with a C6 lubricating control valve, a C7 lubricating control valve and a C8 lubricating throttle valve;
the other end of the lubricating pressure control valve is connected with a second electromagnetic reversing valve, an F clutch control valve, an R clutch control valve and a PTO clutch control valve;
the energy accumulator is used for stabilizing pressure and buffering hydraulic impact, and the other end of the energy accumulator is connected with the first electromagnetic directional valve.
Preferably, the constant flow pump sucks oil from the gearbox through the oil suction filter, high-pressure oil is generated from the constant flow pump, and the high-pressure oil flows out through the high-pressure filter.
Preferably, the other end of the C6 lubrication control valve is connected with the auxiliary power output PTO end lubrication part.
Preferably, the other end of the C7 lubrication control valve is connected with a differential lock.
Preferably, the C8 lubrication throttle communicates with the gearbox lubrication to lubricate the associated gears and shafts.
The invention has the following advantages: the invention provides a power reversing power high-low gear hydraulic system special for a tractor through improvement, compared with the same type of equipment, the invention has the following improvement:
the method has the advantages that: the power reversing power high-low gear hydraulic system special for the tractor replaces the traditional mechanical reversing, the switching of the valves is stable and reliable under different action requirements, no impact exists, the action is sensitive, and the working requirements under different requirements can be met in a reaction time period.
The method has the advantages that: the power reversing power high-low gear hydraulic system special for the tractor has the advantages that the electrification degree is high, the control accuracy of the proportional valve is higher, gears, shafts and the like can be lubricated and cooled, and the service life of mechanical parts is protected; and the degree of automation is high, the overall spatial arrangement of the hydraulic system is reasonable, and the maintenance is convenient.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Wherein: the system comprises an oil absorption filter-1, a constant flow pump-2, a high-pressure filter-3, a full hydraulic steering gear-4, a steering oil cylinder-5, a system pressure control valve-6, a lubricating pressure control valve-7, an energy accumulator-8, a first electromagnetic reversing valve-9, a second electromagnetic reversing valve-10, an F clutch control valve-11, an R clutch control valve-12, a PTO clutch control valve-13, a lubricating filter control valve-14, a HI clutch control valve-15, a LOW clutch control valve-16, a four-wheel drive clutch control valve-17, a differential lock control valve-18, a C6 lubricating control valve-19, a C7 lubricating control valve-20 and a C8 lubricating throttle valve-21.
Detailed Description
The present invention will be described in detail with reference to fig. 1, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention relates to a power reversing power high-LOW gear hydraulic system special for a tractor, which comprises an oil suction filter 1, a constant flow pump 2, a high-pressure filter 3, a full-hydraulic steering gear 4, a steering oil cylinder 5, a system pressure control valve 6, a lubricating pressure control valve 7, an energy accumulator 8, a first electromagnetic reversing valve 9, a second electromagnetic reversing valve 10, an F clutch control valve 11, an R clutch control valve 12, a PTO clutch control valve 13, a lubricating filter control valve 14, an HI clutch control valve 15, a LOW clutch control valve 16, a four-drive clutch control valve 17, a differential lock control valve 18, a C6 lubricating control valve 19, a C7 lubricating control valve 20 and a C8 lubricating throttle valve 21, wherein one end of the oil suction filter 1 is connected with the constant flow pump 2, the other end of the constant flow pump 2 is connected with the full-hydraulic steering gear 4 through the high-pressure filter 3, the constant flow pump 2 sucks oil from a gearbox through the oil suction filter 1, high pressure oil is generated from a constant flow pump 2 and flows out through a high pressure filter 3, one end of a full hydraulic steering gear 4 is connected with a steering oil cylinder 5, the oil return end of the full hydraulic steering gear 4 is connected with a system pressure control valve 6 to generate 2.2MPa pressure oil, when electric signals are simultaneously sent to a first electromagnetic reversing valve 9 and a second electromagnetic reversing valve 10, the oil reaches the front of a valve port of an F clutch control valve 11, an R clutch control valve 12, a PTO clutch control valve 13, a HI clutch control valve 15, a LOW clutch control valve 16, a four-wheel drive clutch control valve 17 and a differential lock control valve 18, the output end of the system pressure control valve 6 is connected with a lubricating pressure control valve 7, an energy accumulator 8 and a lubricating filter control valve 14, the energy accumulator 8 is used for stabilizing pressure and buffering hydraulic impact, the other end of the energy accumulator 8 is connected with the first electromagnetic reversing valve 9, the other end of the lubricating filter control valve 14 is connected with a C6 lubricating control valve 19, The lubricating system comprises a C7 lubricating control valve 20 and a C8 lubricating throttle valve 21, wherein the other end of a C6 lubricating control valve 19 is connected with a PTO end lubricating part of an auxiliary power output, the other end of a C7 lubricating control valve 20 is connected with a differential lock, the C8 lubricating throttle valve 21 is communicated with a lubricating part of a gearbox to lubricate related gears and shafts, and the other end of a lubricating pressure control valve 7 is connected with a second electromagnetic directional valve 10, an F clutch control valve 11, an R clutch control valve 12 and a PTO clutch control valve 13.
The invention provides a power reversing power high-low gear hydraulic system special for a tractor through improvement, and the working principle is as follows;
firstly, a constant flow pump 2 absorbs oil from a gearbox, the oil passes through an oil absorption filter 1, high-pressure oil is generated from the constant flow pump 2, the high-pressure oil passes through a high-pressure filter 3, passes through a full-hydraulic steering gear 4 and a steering oil cylinder 5, and pressure oil of 2.2MPa is generated after the return oil passes through the full-hydraulic steering gear 4 and passes through a system pressure control valve 6;
secondly, the energy accumulator 8 plays a role in stabilizing pressure and buffering hydraulic impact in the system, when an electric signal is simultaneously sent to the two-position two-way first electromagnetic directional valve 9 and the second electromagnetic directional valve 10, oil reaches the front of valve ports of the F clutch control valve 11, the R clutch control valve 12, the PTO clutch control valve 13, the HI clutch control valve 15, the LOW clutch control valve 16, the four-wheel drive clutch control valve 17 and the differential lock control valve 18;
thirdly, when the vehicle needs to move forward, the F clutch control valve 11 obtains a signal valve core for reversing, and the vehicle is in a forward mode at the moment; when backing is needed, the R clutch control valve 12 obtains a signal to change the valve core direction, and is in a backing mode at the moment; when the PTO is required to be combined, the PTO clutch control valve 13 obtains a signal to change direction, the oil path is communicated, and the PTO is combined; when a high gear is required, the HI clutch control valve 15 obtains a signal to reverse the valve core, and is in a high gear mode at the moment; when a LOW gear is required, the LOW clutch control valve 16 obtains a signal to change the valve core, and is in a LOW gear mode at the moment;
fourthly, under the normal condition, the four-wheel drive is in a working state, if the four-wheel drive is not needed, only the two-wheel drive is needed to move, the four-wheel drive clutch control valve 17 is electrified to change the direction, the four-wheel drive is disconnected, and at the moment, the four-wheel drive is in a two-wheel drive movement mode; when a differential lock is needed, the differential lock control valve 18 obtains a signal to change the spool direction, and is in a differential lock mode at the moment; meanwhile, 4 bar of pressure oil can be generated after the oil passes through the lubricating filter control valve 14, the oil is divided into three paths, the first path reaches a PTO lubricating position through the C6 lubricating control valve 19 to lubricate related parts, the second path reaches a differential lock position through the C7 lubricating control valve 20 to lubricate related parts, the third path reaches a gearbox lubricating position through the C8 lubricating throttle valve 21 to lubricate related gears and shafts, and finally the oil returns to the oil tank through the oil return port and the lubricating oil port.
The power reversing power high-low gear hydraulic system special for the tractor is provided through improvement, the traditional mechanical reversing is replaced, the valve is stably and reliably switched under different action requirements, no impact exists, the action is sensitive, and the working requirements under different requirements can be met in a reaction time period; the electrification degree is high, the control accuracy of the proportional valve is higher, and the gears, the shafts and the like can be lubricated and cooled, so that the service life of mechanical parts is protected; and the degree of automation is high, the overall spatial arrangement of the hydraulic system is reasonable, and the maintenance is convenient.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described, and the standard parts used in the present invention are all available on the market, the special-shaped parts can be customized according to the description and the accompanying drawings, the specific connection mode of each part adopts the conventional means of bolt and rivet, welding and the like mature in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, and the details are not described herein.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. The utility model provides a power switching-over power high-low grade hydraulic system for tractor which characterized in that: the structure of the oil absorption device comprises an oil absorption filter (1), a first electromagnetic reversing valve (9) and a second electromagnetic reversing valve (10), wherein one end of the oil absorption filter (1) is connected with a constant flow pump (2), the other end of the constant flow pump (2) is connected with a full-hydraulic steering gear (4) through a high-pressure filter (3), one end of the full-hydraulic steering gear (4) is connected with a steering oil cylinder (5), the oil return end of the full-hydraulic steering gear (4) is connected with a system pressure control valve (6), when electric signals are simultaneously sent to the first electromagnetic reversing valve (9) and the second electromagnetic reversing valve (10), oil reaches the front of valve ports of an F clutch control valve (11), an R clutch control valve (12), a PTO clutch control valve (13), an HI clutch control valve (15), a LOW clutch control valve (16), a four-drive clutch control valve (17) and a differential lock control valve (18), the output end of the system pressure control valve (6) is connected with a lubricating pressure control valve (7), an energy accumulator (8) and a lubricating filter control valve (14), and the other end of the lubricating filter control valve (14) is connected with a C6 lubricating control valve (19), a C7 lubricating control valve (20) and a C8 lubricating throttle valve (21);
the other end of the lubricating pressure control valve (7) is connected with a second electromagnetic directional valve (10), an F clutch control valve (11), an R clutch control valve (12) and a PTO clutch control valve (13);
the energy accumulator (8) is used for stabilizing pressure and buffering hydraulic impact, and the other end of the energy accumulator (8) is connected with the first electromagnetic directional valve (9).
2. The power reversing high-low gear hydraulic system special for the tractor according to claim 1, characterized in that: the constant flow pump (2) absorbs oil from the gearbox through the oil absorption filter (1), high-pressure oil is generated from the constant flow pump (2), and the high-pressure oil flows out through the high-pressure filter (3).
3. The power reversing high-low gear hydraulic system special for the tractor according to claim 1, characterized in that: the other end of the C6 lubrication control valve (19) is connected with the lubrication part of the PTO end of the auxiliary power output.
4. The power reversing high-low gear hydraulic system special for the tractor according to claim 1, characterized in that: the other end of the C7 lubrication control valve (20) is connected with a differential lock.
5. The power reversing high-low gear hydraulic system special for the tractor according to claim 1, characterized in that: the C8 lubrication throttle valve (21) is communicated with a lubrication position of the gearbox to lubricate related gears and shafts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111513243.1A CN114278621A (en) | 2021-12-12 | 2021-12-12 | Power reversing power high-low gear hydraulic system special for tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111513243.1A CN114278621A (en) | 2021-12-12 | 2021-12-12 | Power reversing power high-low gear hydraulic system special for tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114278621A true CN114278621A (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111513243.1A Pending CN114278621A (en) | 2021-12-12 | 2021-12-12 | Power reversing power high-low gear hydraulic system special for tractor |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB677185A (en) * | 1949-04-26 | 1952-08-13 | Borg Warner | Improvements in or relating to variable-speed transmissions |
| ES360704A1 (en) * | 1967-11-28 | 1970-07-16 | Deere & Co | Hydrostatic front wheel drive for a tractor |
| CN201124757Y (en) * | 2007-10-27 | 2008-10-01 | 福田雷沃国际重工股份有限公司 | Full hydraulic drive loading type tractor |
| CN206738308U (en) * | 2017-04-08 | 2017-12-12 | 雷沃重工股份有限公司 | Automatically controlled shift control system |
| CN210600136U (en) * | 2019-09-18 | 2020-05-22 | 雷沃重工股份有限公司 | Hydraulic control system and tractor comprising same |
| CN112081797A (en) * | 2020-09-29 | 2020-12-15 | 江苏常发农业装备股份有限公司 | Tractor low-voltage electro-hydraulic control system |
| CN214998533U (en) * | 2021-05-11 | 2021-12-03 | 第一拖拉机股份有限公司 | Electric proportional power reversing valve assembly |
| CN216842507U (en) * | 2021-12-12 | 2022-06-28 | 江苏悦达智能农业装备有限公司 | Power reversing hydraulic system of tractor |
-
2021
- 2021-12-12 CN CN202111513243.1A patent/CN114278621A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB677185A (en) * | 1949-04-26 | 1952-08-13 | Borg Warner | Improvements in or relating to variable-speed transmissions |
| ES360704A1 (en) * | 1967-11-28 | 1970-07-16 | Deere & Co | Hydrostatic front wheel drive for a tractor |
| CN201124757Y (en) * | 2007-10-27 | 2008-10-01 | 福田雷沃国际重工股份有限公司 | Full hydraulic drive loading type tractor |
| CN206738308U (en) * | 2017-04-08 | 2017-12-12 | 雷沃重工股份有限公司 | Automatically controlled shift control system |
| CN210600136U (en) * | 2019-09-18 | 2020-05-22 | 雷沃重工股份有限公司 | Hydraulic control system and tractor comprising same |
| CN112081797A (en) * | 2020-09-29 | 2020-12-15 | 江苏常发农业装备股份有限公司 | Tractor low-voltage electro-hydraulic control system |
| CN214998533U (en) * | 2021-05-11 | 2021-12-03 | 第一拖拉机股份有限公司 | Electric proportional power reversing valve assembly |
| CN216842507U (en) * | 2021-12-12 | 2022-06-28 | 江苏悦达智能农业装备有限公司 | Power reversing hydraulic system of tractor |
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