CN109654215B - Flexible steering gearbox hydraulic control system - Google Patents
Flexible steering gearbox hydraulic control system Download PDFInfo
- Publication number
- CN109654215B CN109654215B CN201811460273.9A CN201811460273A CN109654215B CN 109654215 B CN109654215 B CN 109654215B CN 201811460273 A CN201811460273 A CN 201811460273A CN 109654215 B CN109654215 B CN 109654215B
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- Prior art keywords
- oil
- port
- friction clutch
- steering
- valve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/0003—Arrangement or mounting of elements of the control apparatus, e.g. valve assemblies or snapfittings of valves; Arrangements of the control unit on or in the transmission gearbox
- F16H61/0009—Hydraulic control units for transmission control, e.g. assembly of valve plates or valve units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/10—Clutch systems with a plurality of fluid-actuated clutches
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B2013/002—Modular valves, i.e. consisting of an assembly of interchangeable components
- F15B2013/004—Cartridge valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
Abstract
The invention discloses a flexible steering gearbox hydraulic control system, which comprises a flexible steering gearbox and a hydraulic control system, wherein the flexible steering gearbox comprises a steering first shaft and a steering second shaft, and a first friction clutch for controlling differential speed and a second friction clutch for controlling forward and reverse are arranged on the steering first shaft; the steering biaxial is provided with a third friction clutch used for controlling left turning and a fourth friction clutch used for controlling right turning; an internal oil way C and an internal oil way D are arranged in the steering one shaft, the internal oil way C is communicated with the first friction clutch, the internal oil way D is communicated with the second friction clutch, an internal oil way A and an internal oil way B are arranged in the steering two shaft, the internal oil way A is communicated with the third friction clutch, and the internal oil way B is communicated with the fourth friction clutch, and the beneficial effects of the invention are that: the hydraulic system directly acts on a friction clutch in the gearbox through an internal oil duct, and a traditional steering oil cylinder and related connecting rods are omitted.
Description
Technical Field
The invention relates to the technical field of hydraulic control systems, in particular to a flexible steering gearbox hydraulic control system.
Background
With the rapid development of the agricultural industry in recent years, the agricultural market gradually becomes saturated, and the era of rough growth thereof has passed. Meanwhile, with the continuous improvement of the requirements of farmers on agricultural machinery, the competition of the agricultural machinery industry in the future is necessarily towards the high-tech direction of high adaptability, high reliability and multifunction.
In addition, the agricultural machinery matched with the flexible steering stepless speed changing box is in a conceptual machine state at home because of high production price, mass production is not realized, and the conventional multi-way reversing valve can realize steering control, but has the defects of back pressure, incapability of realizing orderly control, multi-link operation and the like because of different design structures and parameters of the speed changing box, so that a general flexible steering hydraulic control system which is not ideal in the current market can be directly borrowed.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a flexible steering gearbox hydraulic control system with reasonable structure.
The technical scheme of the invention is as follows:
the flexible steering gearbox hydraulic control system is characterized by comprising a flexible steering gearbox and a hydraulic control system, wherein the flexible steering gearbox comprises a steering first shaft and a steering second shaft, and a first friction clutch and a second friction clutch are arranged on the steering first shaft; the steering biaxial is provided with a third friction clutch and a fourth friction clutch; the steering shaft is internally provided with an internal oil way C and an internal oil way D, the internal oil way C is communicated with the first friction clutch, the internal oil way D is communicated with the second friction clutch, the steering shaft is internally provided with an internal oil way A and an internal oil way B, the internal oil way A is communicated with the third friction clutch, and the internal oil way B is communicated with the fourth friction clutch, so that the first friction clutch, the second friction clutch, the third friction clutch and the fourth friction clutch can be directly controlled through a hydraulic control system.
The flexible steering gearbox hydraulic control system is characterized by comprising a valve body and an oil port A, an oil port B, an oil port C, an oil port D, an oil port P, a first oil outlet and a second oil outlet which are arranged on the valve body; an A-port oil inlet channel, a B-port oil inlet channel, a C-port oil inlet channel and a D-port oil inlet channel are respectively arranged among the oil ports A, B, C and D and the oil inlet P; an A-port oil return channel, a B-port oil return channel, a C-port oil return channel and a D-port oil return channel are respectively arranged between the oil port A, the oil port B, the oil port C and the oil port D and the second oil outlet; and a main oil return channel is arranged between the oil inlet P and the first oil outlet.
The flexible steering gearbox hydraulic control system is characterized in that a manual valve and a sequence valve are arranged on the valve body, and a reversing valve rod of the manual valve is arranged on an A port oil inlet channel, a B port oil inlet channel, a C port oil inlet channel, a D port oil inlet channel, an A port oil return channel and a B port oil return channel in a penetrating manner and is used for controlling the reversing valve rod to return oil to the oil inlets A, the oil inlets B, the oil inlets C and the oil inlets D and the oil inlets A and the oil inlets B; the reversing valve rod of the sequence valve is arranged on the C-port oil inlet channel, the D-port oil inlet channel, the C-port oil return channel and the D-port oil return channel in a penetrating mode and is used for controlling oil inlet and oil return of the oil ports C and D.
The flexible steering gearbox hydraulic control system is characterized in that the manual valve is a seven-position nine-way manual valve, and the sequence valve is a three-position five-way sequence valve.
The flexible steering gearbox hydraulic control system is characterized in that a differential overflow valve is further arranged on the valve body, and the differential overflow valve is arranged on the main oil return channel.
The beneficial effects of the invention are as follows:
1) The hydraulic system directly acts on the friction clutch in the gearbox through the internal oil duct, so that the traditional steering oil cylinder and related connecting rods are omitted, meanwhile, the stroke of a slide valve is reduced, the impact on the gearbox is reduced, and the service life of the gearbox is prolonged.
2) The hydraulic system is a seven-position nine-way manual valve, and differential steering and forward and reverse steering are added on the basis of maintaining the traditional conventional steering function.
3) The sequence valve is added in the hydraulic system, so that orderly work of the steering first shaft and the steering second shaft is realized, and idle running of a transmission gear related to the gearbox and relative friction between friction sheets and friction sheet separators are effectively avoided. The abrasion of the gearbox and the friction plate is reduced, the heating and the energy consumption of the gearbox are reduced, and the service life of the gearbox is prolonged.
4) The main oil way oil return of the hydraulic system and the oil return of each working port adopt independent oil return, so that the risk that the related friction plate is in a semi-clutch state due to oil return back pressure when each working port is in a non-working state is effectively avoided.
5) The differential overflow valve directly acts on and seals with the valve body, so that the differential overflow valve seat is reduced, the production cost is reduced, the allowable installation space of the pressure regulating spring is increased, and the total rigidity of the spring is reduced, so that the opening and closing characteristics of the safety valve are improved.
Drawings
FIG. 1 is a schematic elevational view of the valve body of the present invention;
FIG. 2 is a schematic top view of the valve body of the present invention;
FIG. 3 is a schematic rear view of the valve body of the present invention;
FIG. 4 is a schematic view of a cross-sectional structure of A-A plane of the present invention;
FIG. 5 is a schematic view of a B-B plane cross-sectional structure of the present invention;
FIG. 6 is a schematic diagram of a hydraulic control system of the present invention;
FIG. 7 is a schematic representation of the flexible transmission of the present invention;
in the figure: 1-valve body, 2-oil inlet P, 3-oil port A, 4-oil port B, 5-oil port C,501-C port oil inlet channel, 6-oil port D,601-D port oil inlet channel, 7-first oil outlet, 8-second oil outlet, 801-9-manual valve, 10-sequence valve, 11-differential valve, 20-flexible steering gearbox, 21-steering one shaft, 2101-first friction clutch, 2102-second friction clutch, 2103-internal oil path C, 2104-internal oil path D, 22-steering two shaft, 2201-third friction clutch, 2202-fourth friction clutch, 2203-internal oil path A, 2204-internal oil path B.
Detailed Description
The invention is further described below with reference to the drawings.
As shown in fig. 1-7, the flexible steering gearbox hydraulic control system comprises a flexible steering gearbox 20 and a hydraulic control system, wherein the flexible steering gearbox 20 comprises a steering first shaft 21 and a steering second shaft 22, and a first friction clutch 2101 and a second friction clutch 2102 are arranged on the steering first shaft 21; the steering biaxial 22 is provided with a third friction clutch 2201 and a fourth friction clutch 2202; an internal oil path C2103 and an internal oil path D2104 are arranged in the steering first shaft 21, the internal oil path C2103 is communicated with the first friction clutch 2101, the internal oil path D2104 is communicated with the second friction clutch 2102, an internal oil path A2203 and an internal oil path B2204 are arranged in the steering second shaft 22, the internal oil path A2203 is communicated with the third friction clutch 2201, and the internal oil path B2204 is communicated with the fourth friction clutch 2202, so that the operation of the first friction clutch 2101, the second friction clutch 2102, the third friction clutch 2201 and the fourth friction clutch 2202 can be directly controlled through a hydraulic control system. The first friction clutch 2101 and the second friction clutch 2102 can be respectively engaged with a gear on a steering shaft by power, and the third friction clutch 2201 and the fourth friction clutch 2202 can be respectively engaged with a corresponding gear on a steering shaft by power.
The hydraulic control system comprises an oil port A3, an oil port B4, an oil port C5, an oil port D6, an oil port P2, a first oil outlet 7 and a second oil outlet 8 which are arranged on the valve body 1; an A-port oil inlet channel, a B-port oil inlet channel, a C-port oil inlet channel 501 and a D-port oil inlet channel 601 are respectively arranged among the oil port A3, the oil port B4, the oil port C5, the oil port D6 and the oil inlet P2; an A-port oil return channel, a B-port oil return channel, a C-port oil return channel and a D-port oil return channel are respectively arranged between the oil port A3, the oil port B4, the oil port C5 and the oil port D6 and the second oil outlet 8; a main oil return channel is arranged between the oil inlet P2 and the first oil outlet 7. The valve body 1 is provided with a manual valve 9 and a sequence valve 10, and a reversing valve rod of the manual valve 9 is arranged on an A-port oil inlet channel, a B-port oil inlet channel, a C-port oil inlet channel 501, a D-port oil inlet channel 601, an A-port oil return channel and a B-port oil return channel in a penetrating manner and is used for controlling the reversing valve rod to return oil to oil ports A3, B4, C5 and D6 and oil ports A3 and B4; the reversing valve rod of the sequence valve 10 is arranged on the C-port oil inlet channel 501, the D-port oil inlet channel 601, the C-port oil return channel and the D-port oil return channel in a penetrating manner and is used for controlling oil inlet and oil return of the oil ports C5 and D6; wherein the manual valve 9 adopts a seven-position nine-way manual valve, and the sequence valve 10 adopts a three-position five-way sequence valve. The cooperation of the manual valve 9 and the sequence valve 10 can control the oil port A3, the oil port B4, the oil port C5 and the oil port D6 independently or jointly, so as to control the friction clutch 2101, the second friction clutch 2102, the third friction clutch 2201 and the fourth friction clutch 2202 independently or jointly.
The valve body 1 is also provided with a differential relief valve 11, and the differential relief valve 11 is provided on the main oil return passage. The differential relief valve 11 is used for setting rated pressure of a hydraulic control system, adopts a split structure, directly takes a valve body as a one-way valve seat, reduces the single one-way valve seat compared with the traditional cartridge valve, and reduces the production cost.
The friction clutch (comprising a first friction clutch, a second friction clutch, a third friction clutch and a fourth friction clutch) is used for working principle: the friction clutch consists of a clutch seat, a friction plate, a partition plate, a pressure plate, a return spring and a transmission spline tooth sleeve, wherein the friction plate and the partition plate are placed in the clutch seat at intervals, and the pressure plate is pressed or loosened through a hydraulic control system. When no pressure exists, the friction piece and the partition plate are in a separated state, and no transmission relation exists; when pressure exists, the friction piece and the partition plate are in a compressed state, so that power connection is realized.
Working principle:
as shown in fig. 6, the manual valve 9 is arranged from left to right and is respectively arranged in a first working position to a seventh working position, when the manual valve is arranged in the first working position, the manual valve can be used for connecting the oil port B and supplying oil to the oil inlet channel of the port D; in the second working position, only the oil port B can be communicated; in the third working position, the oil port B can be communicated, and oil is supplied to the oil inlet channel of the port C; in the fourth working position, a main oil return channel between the oil inlet P and the first oil outlet is communicated; in the fifth working position, the oil port A can be communicated, and oil can be supplied to the oil inlet channel of the C port; in the sixth working position, only the oil port A can be communicated; in the seventh working position, the oil port A can be communicated, and oil is supplied to the oil inlet channel of the port D;
the sequence valve 10 is respectively from left to right, and is respectively from a first working position to a third working position; the oil port C can be communicated in the first working position, and the oil port C is not communicated in the second working position; and in the third working position, the oil port D can be communicated.
Claims (3)
1. The flexible steering gearbox hydraulic control system is characterized by comprising a flexible steering gearbox (20) and a hydraulic control system, wherein the flexible steering gearbox (20) comprises a steering first shaft (21) and a steering second shaft (22), and a first friction clutch (2101) and a second friction clutch (2102) are arranged on the steering first shaft (21); a third friction clutch (2201) and a fourth friction clutch (2202) are arranged on the steering biaxial (22); an internal oil way C (2103) and an internal oil way D (2104) are arranged in the steering one shaft (21), the internal oil way C (2103) is communicated with the first friction clutch (2101), the internal oil way D (2104) is communicated with the second friction clutch (2102), an internal oil way A (2203) and an internal oil way B (2204) are arranged in the steering two shaft (22), the internal oil way A (2203) is communicated with the third friction clutch (2201), and the internal oil way B (2204) is communicated with the fourth friction clutch (2202), so that the operation of the first friction clutch (2101), the second friction clutch (2102), the third friction clutch (2201) and the fourth friction clutch (2202) can be directly controlled through a hydraulic control system;
the hydraulic control system comprises a valve body (1), and an oil port A (3), an oil port B (4), an oil port C (5), an oil port D (6), an oil inlet P (2), a first oil outlet (7) and a second oil outlet (8) which are arranged on the valve body (1); an A-port oil inlet channel, a B-port oil inlet channel, a C-port oil inlet channel (501) and a D-port oil inlet channel (601) are respectively arranged among the oil port A (3), the oil port B (4), the oil port C (5), the oil port D (6) and the oil inlet P (2); an A-port oil return channel, a B-port oil return channel, a C-port oil return channel and a D-port oil return channel are respectively arranged between the oil port A (3), the oil port B (4), the oil port C (5), the oil port D (6) and the second oil outlet (8); a main oil return channel is arranged between the oil inlet P (2) and the first oil outlet (7);
a manual valve (9) and a sequence valve (10) are arranged on the valve body (1), and reversing valve rods of the manual valve (9) are arranged on an A-port oil inlet channel, a B-port oil inlet channel, a C-port oil inlet channel (501), a D-port oil inlet channel (601), an A-port oil return channel and a B-port oil return channel in a penetrating manner and are used for controlling the reversing valve rods to return oil to the oil port A (3), the oil port B (4), the oil port C (5), the oil port D (6) and the oil port A (3) and the oil port B (4); the reversing valve rod of the sequence valve (10) is arranged on the C-port oil inlet channel (501), the D-port oil inlet channel (601), the C-port oil return channel and the D-port oil return channel in a penetrating manner and is used for controlling oil inlet and oil return of the oil port C (5) and the oil port D (6);
the manual valve (9) and the sequence valve (10) are matched to control the oil port A (3), the oil port B (4), the oil port C (5) and the oil port D (6) independently or jointly, so that the independent control or the joint control of the friction clutch (2101), the second friction clutch (2102), the third friction clutch (2201) and the fourth friction clutch (2202) is realized.
2. The flexible steering gearbox hydraulic control system according to claim 1, characterized in that the manual valve (9) is a seven-position nine-way manual valve, and the sequence valve (10) is a three-position five-way sequence valve.
3. The flexible steering gearbox hydraulic control system according to claim 1, characterized in that the valve body (1) is further provided with a differential relief valve (11), and that the differential relief valve (11) is arranged on the main oil return channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811460273.9A CN109654215B (en) | 2018-11-30 | 2018-11-30 | Flexible steering gearbox hydraulic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811460273.9A CN109654215B (en) | 2018-11-30 | 2018-11-30 | Flexible steering gearbox hydraulic control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109654215A CN109654215A (en) | 2019-04-19 |
| CN109654215B true CN109654215B (en) | 2023-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811460273.9A Active CN109654215B (en) | 2018-11-30 | 2018-11-30 | Flexible steering gearbox hydraulic control system |
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| Country | Link |
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| CN (1) | CN109654215B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3472350A (en) * | 1968-01-19 | 1969-10-14 | Twin Disc Inc | Hydraulically operated friction clutch of the dual actuating chamber type having a sequencing valve |
| CN1319521A (en) * | 2000-03-29 | 2001-10-31 | 株式会社久保田 | Steering device for working vehicle |
| CN103717933A (en) * | 2011-05-23 | 2014-04-09 | 格特拉格传动机构和齿轮工厂赫尔曼·哈根迈尔有限公司&两合公司 | Clutch assembly and drive train for a motor vehicle |
| CN107405998A (en) * | 2015-03-19 | 2017-11-28 | 吉凯恩汽车有限公司 | The differential unit of motor vehicles and the method for controlling the differential unit |
| CN108412973A (en) * | 2018-05-16 | 2018-08-17 | 李俊年 | Front transmission mechanism with speed turning function |
| CN209762215U (en) * | 2018-11-30 | 2019-12-10 | 浙江云洲科技有限公司 | hydraulic control system of flexible steering gearbox |
-
2018
- 2018-11-30 CN CN201811460273.9A patent/CN109654215B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3472350A (en) * | 1968-01-19 | 1969-10-14 | Twin Disc Inc | Hydraulically operated friction clutch of the dual actuating chamber type having a sequencing valve |
| CN1319521A (en) * | 2000-03-29 | 2001-10-31 | 株式会社久保田 | Steering device for working vehicle |
| CN103717933A (en) * | 2011-05-23 | 2014-04-09 | 格特拉格传动机构和齿轮工厂赫尔曼·哈根迈尔有限公司&两合公司 | Clutch assembly and drive train for a motor vehicle |
| CN107405998A (en) * | 2015-03-19 | 2017-11-28 | 吉凯恩汽车有限公司 | The differential unit of motor vehicles and the method for controlling the differential unit |
| CN108412973A (en) * | 2018-05-16 | 2018-08-17 | 李俊年 | Front transmission mechanism with speed turning function |
| CN209762215U (en) * | 2018-11-30 | 2019-12-10 | 浙江云洲科技有限公司 | hydraulic control system of flexible steering gearbox |
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| Publication number | Publication date |
|---|---|
| CN109654215A (en) | 2019-04-19 |
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