CN209228801U - A kind of hydraulic system and farm machinery - Google Patents
A kind of hydraulic system and farm machinery Download PDFInfo
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- CN209228801U CN209228801U CN201822240480.5U CN201822240480U CN209228801U CN 209228801 U CN209228801 U CN 209228801U CN 201822240480 U CN201822240480 U CN 201822240480U CN 209228801 U CN209228801 U CN 209228801U
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- oil
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- fuel tank
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Abstract
The utility model proposes a kind of hydraulic system and farm machinery, hydraulic system includes: gear change system, auxiliary system, oil pump and fuel tank, and hydraulic oil flows into gear change system and auxiliary system through oil pump, and finally flow to fuel tank by gear change system and auxiliary system.By the same oil pump feed, the oil pressure of hydraulic system is more stable, and the oil-feeding control of hydraulic system is relatively simple, can effectively reduce the fluctuation of charge oil pressure in hydraulic system for hydraulic system provided by the utility model, gear change system and auxiliary system.Be also convenient for being uniformly controlled gear change system and auxiliary system simultaneously, the control efficiency of gear change system and auxiliary system is higher, farm machinery it is handling more preferable.
Description
Technical field
The utility model relates to field of agricultural machinery, in particular to a kind of hydraulic system and a kind of farm machinery.
Background technique
Hydraulic system is widely used on tractor.In the prior art, multiple hydraulic systems on tractor are often opposite
Independent, manipulation is complex, while tractor internal structure is more complicated, is not easy to maintenance maintenance.
Utility model content
The utility model aims to solve at least one of technical problems existing in the prior art or related technologies.
In view of this, the purpose of this utility model is to provide a kind of hydraulic systems.
To achieve the goals above, the technical solution of the utility model provides a kind of hydraulic system, comprising: gear shift system
System, auxiliary system, oil pump and fuel tank, hydraulic oil flow into gear change system and auxiliary system through oil pump, and finally by gear change system
And auxiliary system flow to fuel tank.
In the present solution, gear change system and auxiliary system are by the same oil pump feed, the oil pressure of hydraulic system is more stable,
The oil-feeding control of hydraulic system is relatively simple, can effectively reduce the fluctuation of charge oil pressure in hydraulic system.Simultaneously because realizing
Hydraulic system it is integrated, be also convenient for being uniformly controlled gear change system and auxiliary system, gear change system and auxiliary system
The control efficiency of system is higher, easy to operate, farm machinery it is handling more preferable.It is also pointed out that be, additionally it is possible to simplify agricultural machine
The structure of tool improves the reliability of farm machinery work, convenient for the maintenance maintenance of farm machinery.
In the above-mentioned technical solutions, it is preferable that gear change system include: multiple gear shifting operators and with gear shifting operator pair
The first control valve that should be arranged, the oil inlet and oil outlet of the first control valve are connected to oil pump and fuel tank respectively, the first control
The oil outlet of valve processed is connected to the rodless cavity of gear shifting operator.
In any of the above-described technical solution, it is preferable that the rod chamber of gear shifting operator is equipped with the first elastic component, and gear shift executes
The first elastic component compresses when device moves under the action of hydraulic oil, and the first elastic component restores to drive gear shifting operator to reset when deformation
And the volume of the rodless cavity of gear shifting operator is made to become smaller.
In any of the above-described technical solution, it is preferable that auxiliary system includes: two PTO actuators and the second control valve,
The oil inlet and oil outlet of second control valve are connected to oil pump and fuel tank respectively, and the oil outlet of the second control valve is respectively with two
The rodless cavity of a PTO actuator is connected to.
In any of the above-described technical solution, it is preferable that auxiliary system further include: electric proportional control valve, electric proportional control valve
It is connected to the second control valve and fuel tank.
In any of the above-described technical solution, it is preferable that the rod chamber of PTO actuator is equipped with the second elastic component, PTO actuator
The second elastic component compresses when moving under the action of hydraulic oil, and the second elastic component restores to drive PTO actuator to reset simultaneously when deformation
The volume of PTO actuator rodless cavity is set to become smaller.
In any of the above-described technical solution, it is preferable that auxiliary system further include: 4 wheel driven actuator and third control valve,
The oil inlet and oil outlet of third control valve are connected to oil pump and fuel tank respectively, and oil outlet and the 4 wheel driven of third control valve are held
The rodless cavity of row device is connected to.
In any of the above-described technical solution, it is preferable that auxiliary system further include: differential actuator and the 4th control valve,
The oil inlet and oil outlet of 4th control valve are connected to oil pump and fuel tank respectively, and the oil outlet of the 4th control valve is held with differential
The rodless cavity of row device is connected to.
In any of the above-described technical solution, it is preferable that oil pump is connected by oil inlet pipe and gear change system and auxiliary system
It is logical, hydraulic system further include: accumulator, accumulator are connected to oil inlet pipe.
The technical solution of the utility model second aspect provides a kind of farm machinery, including any technical side of first aspect
Hydraulic system in case.
The farm machinery that this programme provides, due to including the hydraulic system in any technical solution of first aspect, tool
The all advantages of standby above-mentioned technical proposal, details are not described herein again.
The additional aspect and advantage of the utility model will become obviously in following description section, or practical new by this
The practice of type is recognized.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the hydraulic system of one embodiment according to the present utility model.
Wherein, the appended drawing reference in Fig. 1 and the corresponding relationship between component names are as follows:
11 gear change systems, 111 gear shifting operators, 112 first control valves, 12 auxiliary systems, 121PTO actuator, 122
Two control valves, 123 electric proportional control valves, 124 4 wheel driven actuators, 125 third control valves, 126 differential actuators, 127 the 4th controls
Valve processed, 13 oil pumps, 14 fuel tanks, 15 accumulators, 16 regulating valves, 17 oil inlet pipes, 18 filter-presses.
Specific embodiment
In order to be more clearly understood that the above objects, features, and advantages of the utility model, with reference to the accompanying drawing and have
The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen
The feature in embodiment and embodiment please can be combined with each other.
Many details are explained in the following description in order to fully understand the utility model, still, this is practical
Novel to be implemented using other than the one described here other modes, therefore, the protection scope of the utility model is simultaneously
It is not limited by the specific embodiments disclosed below.
Some embodiments according to the present utility model are described referring to Fig. 1.
As shown in Figure 1, the embodiments of the present invention provide a kind of hydraulic system, (for example, dragged for farm machinery
Machine drawing), comprising: gear change system 11, auxiliary system 12, oil pump 13 and fuel tank 14, hydraulic oil flow into gear change system 11 through oil pump 13
And auxiliary system 12, and fuel tank 14 is finally flow to by gear change system 11 and auxiliary system 12.
In the present solution, gear change system 11 and auxiliary system 12 pass through same 13 fuel feeding of oil pump, the oil pressure of hydraulic system
More stable, the oil-feeding control of hydraulic system is relatively simple, can effectively reduce the fluctuation of charge oil pressure in hydraulic system.While by
In realizing the integrated of hydraulic system, it is also convenient for being uniformly controlled to gear change system 11 and auxiliary system 12, gear change system
11 and auxiliary system 12 control efficiency it is higher, it is easy to operate, farm machinery it is handling more preferable.
As shown in Figure 1, in the above embodiment, it is preferable that gear change system 11 include: multiple gear shifting operators 111 and
The first control valve 112 (for example, two position, three-way electromagnetic change valve) being correspondingly arranged with gear shifting operator 111, the first control valve
112 oil inlet and oil outlet is connected to oil pump 13 and fuel tank 14 respectively, and the oil outlet of the first control valve 112 is held with gear shift
The rodless cavity of row device 111 is connected to.
In the present solution, the rodless cavity of gear shifting operator 111 and oil pump 13 can be made when the first 112 switching state of control valve
Oil outlet connection, or it is connected to the rodless cavity of gear shifting operator 111 with fuel tank 14.When the rodless cavity and oil of gear shifting operator 111
When the oil outlet connection of pump 13, gear shifting operator 111 moves under the action of hydraulic oil, to complete gear-change operation.When gear shift is held
When the rodless cavity of row device 111 is connected to fuel tank 14, the hydraulic oil in 111 rodless cavity of gear shifting operator can flow into fuel tank 14, realize
The reset of gear shifting operator 111.Gear shifting operator 111 is swift in motion, being capable of fast slewing.
In the present solution, being shifted gears by hydraulic-driven farm machinery, grasped relative to mechanically actuated mode or semi-machine
Make mode, shifts gears more efficient, it is handling more preferable, while energy loss is smaller, energy consumption is lower, solves existing tractor and hangs
Connect low efficiency existing for formula mechanical changeover technology, handling difference and the problems such as energy consumption is high.It is easy to operate simultaneously, it is ripe to operator
The requirement of white silk degree is lower, convenient for promoting.
As shown in Figure 1, in any of the above-described embodiment, it is preferable that the rod chamber of gear shifting operator 111 is equipped with the first elasticity
Part (for example, reset spring), when gear shifting operator 111 moves under the action of hydraulic oil, the rodless cavity of gear shifting operator 111
Volume increases, and the body of rod in actuator is protruding, and rod chamber volume is gradually reduced, the compression of the first elastic component.First control valve
By gear shifting operator 111 when fuel tank is connected to, the first elastic component restores deformation, and the first elastic component drives gear shifting operator 111 multiple
Position simultaneously makes the volume of the rodless cavity of gear shifting operator become smaller.To realize automatically reseting for gear shifting operator 111.
In the present solution, when the rodless cavity of gear shifting operator 111 is connected to the oil outlet of oil pump 13, gear shifting operator 111
It is moved under the action of hydraulic oil, while the first elastic component compresses.When the rodless cavity of gear shifting operator 111 is connected to fuel tank 14
When, the first elastic component restores deformation, and gear shifting operator 111 resets, and the volume of the rodless cavity of gear shifting operator is made to become smaller, gear shift
Hydraulic oil in 111 rodless cavity of actuator can flow into fuel tank 14, and the first elastic component restores deformation, to drive gear shifting operator
111 reset, to realize automatically reseting for gear shifting operator 111.
As shown in Figure 1, in any of the above-described embodiment, it is preferable that auxiliary system 12 includes: two PTO actuators 121；
And second control valve 122 (for example, two-position four-way solenoid directional control valve), the oil inlet and oil outlet point of the second control valve 122
It is not connected to oil pump 13 and fuel tank 14, the oil outlet of the second control valve 122 rodless cavity with two PTO actuators 121 respectively
Connection.
In the present solution, the rodless cavity and oil pump 13 of PTO actuator 121 can be made respectively when the second 122 switching state of control valve
Oil outlet connection, or be connected to the rodless cavity of PTO actuator 121 with fuel tank 14.When the second control valve 122 is located at first state
When, when the rodless cavity of a PTO actuator 121 is connected to the oil outlet of oil pump 13, the rodless cavity of another PTO actuator 121
It is connected to fuel tank 14, so that a movement of PTO actuator 121 is stretched out, another PTO actuator 121 resets, and realizes to PTO's
It adjusts.When the second control valve 122 is adjusted to the second state, a PTO actuator 121 resets, another PTO actuator 121
Movement, to complete to adjust the speed.
As shown in Figure 1, in any of the above-described embodiment, it is preferable that auxiliary system further include: electric proportional control valve 123, electricity
Proportional control valve 123 is connected to the second control valve 122 and fuel tank 14.
In the present solution, the aperture of electric proportional control valve 123 is continuously adjustable, to be adjustable 122 oil inlet of the second control valve
The flow and pressure at place, and then the pressure in 121 rodless cavity of PTO actuator can be adjusted, reach the fortune to PTO actuator 121
The purpose that dynamic speed is controlled, can be realized stepless speed regulation.
As shown in Figure 1, in any of the above-described embodiment, it is preferable that the rod chamber of PTO actuator 121 is equipped with the second elasticity
Part, the second elastic component compresses when PTO actuator 121 moves under the action of hydraulic oil, and the second elastic component restores to drive when deformation
PTO actuator 121 moves so that the volume of 121 rodless cavity of PTO actuator becomes smaller.
In the present solution, PTO actuator 121 exists when the rodless cavity of PTO actuator 121 is connected to the oil outlet of oil pump 13
It is moved under the action of hydraulic oil, while the second elastic component compresses.When the rodless cavity of PTO actuator 121 is connected to fuel tank 14,
Hydraulic oil in 121 rodless cavity of PTO actuator can flow into fuel tank 14, and the second elastic component restores deformation, to drive PTO actuator
Automatically reseting for PTO actuator 121 is realized in 121 reset.
As shown in Figure 1, in any of the above-described embodiment, it is preferable that auxiliary system 12 further include: 4 wheel driven actuator 124；With
And third control valve 125 (for example, two position, three-way electromagnetic change valve), oil inlet and the oil outlet difference of third control valve 125
It is connected to oil pump 13 and fuel tank 14, the oil outlet of third control valve 125 is connected to the rodless cavity of 4 wheel driven actuator 124.
In the present solution, the rodless cavity of 4 wheel driven actuator 124 and oil pump 13 can be made when 125 switching state of third control valve
Oil outlet connection, or it is connected to the rodless cavity of 4 wheel driven actuator 124 with fuel tank 14.When the rodless cavity and oil of 4 wheel driven actuator 124
When the oil outlet connection of pump 13,4 wheel driven actuator 124 moves under the action of hydraulic oil, to become 4 wheel driven mould from two drive modes
Formula.When the rodless cavity of 4 wheel driven actuator 124 is connected to fuel tank 14, the hydraulic oil in 124 rodless cavity of 4 wheel driven actuator can be flowed into
Fuel tank 14, realizes the reset of 4 wheel driven actuator 124, and farm machinery is converted to two drive modes from 4 wheel driven mode.
As shown in Figure 1, in any of the above-described embodiment, it is preferable that auxiliary system 12 further include: differential actuator 126；With
And the 4th control valve 127 (for example, two position, three-way electromagnetic change valve), oil inlet and the oil outlet difference of the 4th control valve 127
It is connected to oil pump 13 and fuel tank 14, the oil outlet of the 4th control valve 127 is connected to the rodless cavity of differential actuator 126.
In the present solution, the rodless cavity of differential actuator 126 and oil pump 13 can be made when the 4th 127 switching state of control valve
Oil outlet connection, or it is connected to the rodless cavity of differential actuator 126 with fuel tank 14.When the rodless cavity and oil of differential actuator 126
When the oil outlet connection of pump 13, differential actuator 126 moves under the action of hydraulic oil, to realize differential.When differential actuator
When 126 rodless cavity is connected to fuel tank 14, the hydraulic oil in 126 rodless cavity of differential actuator can flow into fuel tank 14, realize differential
The reset of actuator 126.
As shown in Figure 1, in any of the above-described embodiment, it is preferable that oil pump 13 passes through oil inlet pipe 17 and gear change system 11
And auxiliary system 12 is connected to, hydraulic system further include: accumulator 15, accumulator 15 are connected to oil inlet pipe 17.
In the present solution, accumulator 15 can provide interim oil sources when oil pump 13 stops working suddenly, guarantee power shifting
Pressure demand improves the reliability of hydraulic system work.
Further preferably design oil pump 13 is constant displacement pump.
As shown in Figure 1, filter-press 18 is further preferably equipped between design oil inlet pipe 17 and oil pump 13, so as to
Enough reduce the hydraulic fluctuation of hydraulic oil in hydraulic system.
As shown in Figure 1, further preferably design further includes the regulating valve 16 being connected to oil inlet pipe 17, when oil inlet pipe 17
When the building the pressure of middle hydraulic oil reaches preset value, regulating valve 16 can be automatically turned on, and the hydraulic oil in oil inlet pipe 17 is through regulating valve 16
Fuel tank 14 or lubricating system are flowed into, so that the oil pressure in oil inlet pipe 17 is no more than preset value, what raising hydraulic system worked can
By property.
The embodiment of the utility model second aspect provides a kind of farm machinery (for example, tractor), including first party
Hydraulic system in any embodiment of face.
The farm machinery that this programme provides has due to including the hydraulic system in first aspect any embodiment
The all advantages of above-mentioned technical proposal, details are not described herein again.
In the present invention, term " first ", " second ", " third " are only used for the purpose of description, and should not be understood as
Indication or suggestion relative importance；Term " multiple " then refers to two or more, unless otherwise restricted clearly.Term " peace
Dress ", " connected ", " connection ", the terms such as " fixation " shall be understood in a broad sense, can also be with for example, " connection " may be a fixed connection
It is to be detachably connected, or be integrally connected；" connected " can be directly connected, can also be indirectly connected through an intermediary.It is right
For those skilled in the art, can understand as the case may be above-mentioned term in the present invention specifically contain
Justice.
In the description of the utility model, it is to be understood that term " on ", "lower", "left", "right", "front", "rear" etc. refer to
The orientation or positional relationship shown be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the utility model and
Simplify description, rather than the device or unit of indication or suggestion meaning there must be specific direction, with specific orientation construction
And operation, it is thus impossible to be construed as a limitation of the present invention.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least the one of the utility model
In a embodiment or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment
Or example.Moreover, the particular features, structures, materials, or characteristics of description can be in any one or more embodiment or examples
In can be combined in any suitable manner.
The above is only the preferred embodiments of the utility model, are not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of hydraulic system characterized by comprising gear change system (11), auxiliary system (12), oil pump (13) and fuel tank
(14), hydraulic oil flows into the gear change system (11) and the auxiliary system (12) through oil pump (13), and is finally changed by described
Shelves system (11) and the auxiliary system (12) flow to the fuel tank (14).
2. hydraulic system according to claim 1, which is characterized in that the gear change system (11) includes: that multiple gear shift are held
Row device (111) and the first control valve (112) being correspondingly arranged with the gear shifting operator (111), first control valve
(112) oil inlet and oil outlet is connected to the oil pump (13) and the fuel tank (14) respectively, first control valve
(112) oil outlet is also connected to the rodless cavity of the gear shifting operator (111).
3. hydraulic system according to claim 2, which is characterized in that
The rod chamber of the gear shifting operator (111) is equipped with the first elastic component, work of the gear shifting operator (111) in hydraulic oil
The compression of the first elastic component described in when lower movement, first elastic component restore to drive the gear shifting operator (111) when deformation
It resets and the volume of the rodless cavity of gear shifting operator (111) is made to become smaller.
4. hydraulic system according to claim 1, which is characterized in that the auxiliary system (12) includes: that two PTO are executed
Device (121) and the second control valve (122), the oil inlet and oil outlet of second control valve (122) respectively with the oil
Pump (13) and the fuel tank (14) connection, the oil outlet of second control valve (122) respectively with two PTO actuators
(121) rodless cavity connection.
5. hydraulic system according to claim 4, which is characterized in that the auxiliary system (12) further include:
Electric proportional control valve (123), the electric proportional control valve (123) are connected to second control valve (122) and fuel tank (14).
6. hydraulic system according to claim 4, which is characterized in that
The rod chamber of the PTO actuator (121) is equipped with the second elastic component, effect of the PTO actuator (121) in hydraulic oil
The compression of second elastic component described in when lower movement, second elastic component restore that the PTO actuator (121) is driven to reset when deformation
And the volume of PTO actuator (121) rodless cavity is made to become smaller.
7. hydraulic system according to any one of claim 1 to 6, which is characterized in that the auxiliary system (12) is also wrapped
It includes: 4 wheel driven actuator (124) and third control valve (125), the oil inlet and oil outlet point of the third control valve (125)
It is not connected to the oil pump (13) and the fuel tank (14), the oil outlet of the third control valve (125) is held with the 4 wheel driven
The rodless cavity of row device (124) is connected to.
8. hydraulic system according to any one of claim 1 to 6, which is characterized in that the auxiliary system (12) is also wrapped
It includes: differential actuator (126) and the 4th control valve (127), the oil inlet and oil outlet point of the 4th control valve (127)
It is not connected to the oil pump (13) and the fuel tank (14), the oil outlet of the 4th control valve (127) is held with the differential
The rodless cavity of row device (126) is connected to.
9. hydraulic system according to any one of claim 1 to 6, which is characterized in that the oil pump (13) passes through oil inlet
Pipeline (17) is connected to the gear change system (11) and the auxiliary system (12), the hydraulic system further include:
Accumulator (15), the accumulator (15) are connected to the oil inlet pipe (17).
10. a kind of farm machinery, which is characterized in that including hydraulic system as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822240480.5U CN209228801U (en) | 2018-12-28 | 2018-12-28 | A kind of hydraulic system and farm machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822240480.5U CN209228801U (en) | 2018-12-28 | 2018-12-28 | A kind of hydraulic system and farm machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209228801U true CN209228801U (en) | 2019-08-09 |
Family
ID=67509766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822240480.5U Active CN209228801U (en) | 2018-12-28 | 2018-12-28 | A kind of hydraulic system and farm machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209228801U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425264A (en) * | 2019-09-04 | 2019-11-08 | 山东雷沃传动有限公司 | A kind of control system and control method of electrichydraulic control gearbox |
| CN111692153A (en) * | 2020-06-18 | 2020-09-22 | 北京中科原动力科技有限公司 | Multi-way valve electric control system of unmanned tractor |
-
2018
- 2018-12-28 CN CN201822240480.5U patent/CN209228801U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425264A (en) * | 2019-09-04 | 2019-11-08 | 山东雷沃传动有限公司 | A kind of control system and control method of electrichydraulic control gearbox |
| CN110425264B (en) * | 2019-09-04 | 2024-02-06 | 山东雷沃传动有限公司 | Control system and control method for electrohydraulic control gearbox |
| CN111692153A (en) * | 2020-06-18 | 2020-09-22 | 北京中科原动力科技有限公司 | Multi-way valve electric control system of unmanned tractor |
| CN111692153B (en) * | 2020-06-18 | 2023-11-03 | 北京中科原动力科技有限公司 | Unmanned tractor multiway valve electric control system |
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Address after: 261206 No. 192 South Beihai Road, Fangzi District, Shandong, Weifang Patentee after: Weichai leiwo Heavy Industry Co.,Ltd. Address before: 261206 No. 192 South Beihai Road, Fangzi District, Shandong, Weifang Patentee before: LOVOL HEAVY INDUSTRY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 261206 No. 192 South Beihai Road, Fangzi District, Shandong, Weifang Patentee after: Weichai Lovol Intelligent Agricultural Technology Co.,Ltd. Address before: 261206 No. 192 South Beihai Road, Fangzi District, Shandong, Weifang Patentee before: Weichai leiwo Heavy Industry Co.,Ltd. |