CN207297490U - A kind of tobacco harvesting machine driven using closed type hydraulic system - Google Patents
A kind of tobacco harvesting machine driven using closed type hydraulic system Download PDFInfo
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- CN207297490U CN207297490U CN201720457616.0U CN201720457616U CN207297490U CN 207297490 U CN207297490 U CN 207297490U CN 201720457616 U CN201720457616 U CN 201720457616U CN 207297490 U CN207297490 U CN 207297490U
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Abstract
A kind of tobacco harvesting machine using Closed Hydraulic Driving system, including fuel tank and the hydraulic circuit that is connected with fuel tank, the hydraulic circuit include walking hydraulic pressure pump assembly, the feed circuit being connected with fuel tank and oil return circuit are set in the walking hydraulic assembly；Trailing wheel hydraulic motor assembly I and trailing wheel hydraulic motor assembly II, the trailing wheel hydraulic motor assembly I and trailing wheel hydraulic motor assembly II are connected with walking hydraulic pressure pump assembly by oil circuit, and have the oil circuit for setting brake valve between the trailing wheel hydraulic motor assembly I and trailing wheel hydraulic motor assembly II and walking hydraulic pressure pump assembly；Front-wheel hydraulic motor assembly, the front-wheel hydraulic motor assembly are connected with walking hydraulic pressure pump assembly by oil circuit.In closed system, the oil inlet pipe of hydraulic pump is directly connected with the oil return pipe of executive component, and working fluid carries out closed circulation in the pipeline of system.Closed system structure is more compact, less with air contact chance, and air is not easy the system of penetrating into, therefore the stationarity being driven is good.
Description
Technical field
It the utility model is related to the tobacco harvesting machine using closed type hydraulic system driving.
Background technology
China develops tobacco harvester since the nineties, due to many reasons, makes slow progress, and at present, does not have also
Important breakthrough, most tobacco leaf picking still use handwork, and expense of labor account for the proportion of maximum in production cost.
In general, China's tobacco leaf picking machine type is to copy external large-scale tobacco leaf picking machine to improve to form.Pass through transformation
Harvesting and the dynamical system of driving, to be applicable in the present situation of the current agricultural production in China.
External tobacco leaf harvest machinery uses hydraulic-driven mostly, due to external hydraulic pressure original paper relative mass and efficiency all
Compare high, stable drive, the probability that oil leak occurs is also fewer, therefore external tobacco harvesting machine tool is nearly all driven using hydraulic pressure
It is dynamic, use the variable speed of hydraulic power road speed easy to implement in driving drive part.
Problems and disadvantages existing in the prior art：
Also there are several tobacco harvesting machines in the country at present, but is driven only with machine driving driving or open type hydraulic system
It is dynamic.Although machine driving low cost, the kind of drive is complicated, and low-speed stability is poor, and can not realize variable speed.Open type liquid
Pressure system solves mechanically operated kind of drive challenge, but can not solve riding stability and variable speed well
Problem.
Utility model content
The technical problems to be solved in the utility model is that providing a kind of tobacco using closed type hydraulic system driving harvests
Machine, it is existing in the prior art to solve the problems, such as.
In order to solve the above technical problems, the utility model uses following technical scheme：
A kind of tobacco harvesting machine driven using closed type hydraulic system, including fuel tank 20 and the hydraulic pressure that be connected with fuel tank 20 time
Road, the hydraulic circuit include：
Walking hydraulic pressure pump assembly 1, the walking hydraulic assembly 1 is interior to set the feed circuit being connected with fuel tank 20 and oil return to return
Road；
Trailing wheel hydraulic motor assembly I 7 and trailing wheel hydraulic motor assembly II 11, the trailing wheel hydraulic motor assembly I 7 and trailing wheel
Hydraulic motor assembly II 11 is connected with walking hydraulic pressure pump assembly 1 by oil circuit, and the trailing wheel hydraulic motor assembly I 7 and trailing wheel
There is the oil circuit for setting brake valve 5 between hydraulic motor assembly II 11 and walking hydraulic pressure pump assembly 1；
Front-wheel hydraulic motor assembly 15, the front-wheel hydraulic motor assembly 15 are connected with walking hydraulic pressure pump assembly 1 by oil circuit
Connect.
Feed circuit in the walking hydraulic pressure pump assembly 1 includes the repairing gear pump 4 being connected with fuel tank 20, repairing gear
Plunger pump 3 is connected with pump 4, oil return circuit includes safety valve 6, and safety valve 6 connects fuel tank by radiator 18, filter 19
20, plunger pump 3 passes through oil circuit connection safety valve 6, trailing wheel hydraulic motor assembly I 7, trailing wheel hydraulic motor assembly II 11, front-wheel liquid
Pressure motor assembly 15.
The trailing wheel hydraulic motor assembly I 7 includes left rear wheel walking piston motor 9 and left rear wheel brake 8, trailing wheel hydraulic pressure
Motor assembly II 11 includes off hind wheel walking piston motor 13 and off hind wheel brake 12, left rear wheel walking piston motor 9 and the right side
Trailing wheel walking piston motor 13 connects plunger pump 3 by oil circuit, and left rear wheel brake 8 and off hind wheel brake 12 pass through brake
Valve 5 connects repairing gear pump 4.
The front-wheel hydraulic motor assembly 15 includes front-wheel walking piston motor 16, and the front-wheel walking piston motor 16 is logical
Cross oil circuit connection plunger pump 3.
The safety valve 6 is the valve block formed comprising a safety valve and four check valves.
The utility model has the following advantages:
1. in closed system, the oil inlet pipe of hydraulic pump is directly connected with the oil return pipe of executive component, and working fluid is being
Closed circulation is carried out in the pipeline of system.Closed system structure is more compact, and less with air contact chance, air is not easy introgression line
System, therefore the stationarity being driven is good.
2. the speed change of operating mechanism and commutation are realized by adjusting the stroking mechanism of pump or motor, avoid and changed in open system
To the hydraulic shock appeared in process and energy loss.
3. closed system takes bidirectional variable hydraulic pump, the flow of hydraulic oil and side in working connection are changed by the variable of pump
To realize speed change and the commutation of fulfiling mechanism, this adjusting method, sufficient can embody hydraulicdriven strong point.
4. current closed system variable pump is integrated structure, the function valve group collection such as slippage pump and repairing, overflow, control
Into on hydraulic pump, making pipeline connection become simple, installation space is not only reduced, but also reduce as caused by connecting pipeline
Leakage and pipe vibration, improve the reliability of system, simplify operating process.
5. oil-supplementing system can not only ensure the response of positive displacement transmission when the discharge capacity of main pump changes, system is improved
Operating frequency, moreover it is possible to increase pressure at main pump oil inlet, prevent from producing cavitation erosion during big flow, the rotating speed of pump can be effectively improved and prevented
Only pumping is empty, improves working life;Filter is housed in oil-supplementing system, improves the reliability and service life of transmission device;Separately
Outside, slippage pump can easily also provide power for some low pressure auxiliary bodies.
6. being drawn due to only having a small amount of fluid from fuel tank, reduce the loss of oil plant.
7. carry parking device（Hydraulic control brake disc）Motor, solve parking well and start that supercharging is anti-to creep
Problem, can provide good parking performance and start reliability.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model hydraulic system.
Wherein, 1- walkings hydraulic pressure pump assembly, 2- electromagnetism swash plate adjusters, 3- plunger pumps, 4- repairing gear pumps, 5- brakes
Valve, 6- safety valves, 7- left rear wheel hydraulic motor assemblies, 8- left rear wheel brakes, 9- left rear wheels walking plunger horse, 10- left rear wheels
Walking piston motor swash plate electromagnetic regulator, 11- off hind wheel hydraulic motor assemblies, 12- off hind wheel brakes, 13- off hind wheel rows
Walk piston motor, 14- off hind wheels walking piston motor swash plate electromagnetic regulator, 15- front-wheel hydraulic motor assemblies, 16- front-wheel rows
Walk piston motor, 17- front-wheels walking piston motor swash plate electromagnetic regulator, 18- radiators, 19- filters, 20- fuel tanks.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
The utility model provides a kind of tobacco harvesting machine driven using closed type hydraulic system, including fuel tank 20 and and fuel tank
The hydraulic circuit of 20 connections, hydraulic circuit include following sections.
Include walking hydraulic pressure pump assembly 1 first, walking hydraulic assembly 1 has the feed circuit and oil return being connected with fuel tank 20
Circuit.
Trailing wheel hydraulic motor assembly I 7 and trailing wheel hydraulic motor assembly II 11 are further included, trailing wheel hydraulic motor assembly I 7 is with after
Connected between the feed circuit of wheel hydraulic motor assembly II 11 and walking hydraulic pressure pump assembly 1 and oil return circuit by oil circuit, and
They connect trailing wheel hydraulic motor assembly I 7 and trailing wheel hydraulic motor assembly II by the other oil circuit for being provided with brake valve 5
11。
Front-wheel hydraulic motor assembly 15 is further included, front-wheel hydraulic motor assembly 15 passes through oil circuit with walking hydraulic pressure pump assembly 1
Connection, the oil circuit equally connect trailing wheel hydraulic motor assembly I 7 and trailing wheel hydraulic motor assembly II 11.
The feed circuit set in above-mentioned walking hydraulic pressure pump assembly 1 includes the repairing gear pump 4 being connected with fuel tank 20, mends
Plunger pump 3 is connected with oilgear pump 4, oil return circuit includes safety valve 6, and safety valve 6 is connected by radiator 18, filter 19
Fuel tank 20.Plunger pump 3 passes through oil circuit connection safety valve 6, trailing wheel hydraulic motor assembly I 7, trailing wheel hydraulic motor assembly II 11, preceding
Take turns hydraulic motor assembly 15.
As shown in Figure 1, trailing wheel hydraulic motor assembly I 7, trailing wheel hydraulic motor assembly II 11, front-wheel hydraulic motor assembly 15
The both ends of plunger pump 3 are connected to by identical oil circuit
Trailing wheel hydraulic motor assembly I 7 includes left rear wheel walking piston motor 9 and left rear wheel brake 8, trailing wheel hydraulic motor
Assembly II 11 includes off hind wheel walking piston motor 13 and off hind wheel brake 12, left rear wheel walking piston motor 9 and off hind wheel
Piston motor 13 of walking connects plunger pump 3 by oil circuit, and left rear wheel brake 8 and off hind wheel brake 12 pass through brake valve 5
Connect repairing gear pump 4.
Front-wheel hydraulic motor assembly 15 includes front-wheel walking piston motor 16, and the front-wheel walking piston motor 16 passes through oil
Road connects plunger pump 3.
Safety valve 6 is the valve block formed comprising a safety valve and four check valves, and four check valves are gone here and there two-by-two in valve block
Connection forms the both sides that oil circuit is connected to plunger pump 3, and one of safety valve one end connects the oil circuit of repairing gear pump 4 and goes here and there two-by-two
The centre of the check valve of connection, the other end connect fuel tank 20 by radiator 18 and filter 19 at the same time and carry out oil return.
As shown in Figure 1, the oil inlet IN for the oil pipe connection walking hydraulic pressure pump assembly 1 drawn in above-mentioned fuel tank 20, walking
The oil return inlet T of hydraulic pressure pump assembly 1 is sequentially connected radiator 18, filter 19 and then oil return box 20, the work of walking hydraulic pressure pump assembly 1
Make mouth A, B and connect front-wheel motor assembly 15 respectively, A, B mouth of left rear wheel motor assembly 11, and the B of off hind wheel motor assembly 7,
A mouthfuls, it can realize the parallel connection of three motors；The H mouths of walking hydraulic pressure pump assembly 1 connect the P mouths of brake valve 5 at the same time, and brake electromagnetism
The brake hydraulic fluid port of the A mouths connection trailing wheel running motor assembly 7,11 of valve 5, the T mouths connection fuel tank 20 of brake solenoid valve 5.
The hydraulic principle of the utility model is：
During parking：Electromagnetism swash plate adjuster 2, the left rear wheel row of trailing wheel hydraulic motor assembly I 7 of walking hydraulic pressure pump assembly 1
Walk the off hind wheel walking piston motor swash plate electromagnetism tune of piston motor swash plate electromagnetic regulator 10, trailing wheel hydraulic motor assembly II 11
Section device 14, the front-wheel walking piston motor swash plate electromagnetic regulator 17 of front-wheel hydraulic motor assembly 15 all return middle position, swash plate angle
It is zero, each plunger pumpage is zero, ensures no driving force；Brake 5 upper work of solenoid valve, trailing wheel hydraulic motor are total at this time
Locking state is in into the left rear wheel brake 8 in I 7, trailing wheel hydraulic motor assembly II 11, off hind wheel brake 12, after locking
Wheel realizes parking.
Walk backward forward：Electromagnetism swash plate adjuster 2 in walking hydraulic pressure pump assembly 1 departs from middle position so that plunger pump 3
Swash plate departs from middle position, and plunger pump 3 has begun with discharge capacity, produces hydraulic flow, at the same adjust trailing wheel hydraulic motor assembly I 77, after
Take turns hydraulic motor assembly II 11, front-wheel hydraulic motor assembly 15 so that the left rear wheel walking plunger of trailing wheel hydraulic motor assembly I 7
The off hind wheel walking piston motor swash plate electromagnetic regulator of motor swashplate electromagnetic regulator 10, trailing wheel hydraulic motor assembly II 11
14th, the front-wheel walking piston motor swash plate electromagnetic regulator 17 of front-wheel hydraulic motor assembly 15 departs from middle position, brakes under solenoid valve 5
Position work, left rear wheel brake 8, off hind wheel brake 12 with oil and depart from locking, can be with running motor under high pressure oil effect
Realize and rotate.
Speed shelves with it is fast at a slow speed：By control panel speed shelves button, trailing wheel hydraulic motor assembly I 77, trailing wheel liquid are adjusted
Pressure motor assembly II 11, front-wheel hydraulic motor assembly 15 so that the left rear wheel walking piston motor of trailing wheel hydraulic motor assembly I 7
The off hind wheel walking piston motor swash plate electromagnetic regulator 14, preceding of swash plate electromagnetic regulator 10, trailing wheel hydraulic motor assembly II 11
The front-wheel walking piston motor swash plate electromagnetic regulator 17 for taking turns hydraulic motor assembly 15 departs from the scope of middle position, realize discharge capacity etc.
Level change, while control the deflection angle of the electromagnetism swash plate adjuster 2 in walking hydraulic pressure pump assembly 1 to realize that discharge capacity connects by handle
Continuous change, realizes changing at a slow speed soon in gear.
Brake：Handle returns middle position, and each pump and motor displacement are zero, 5 upper work of solenoid valve of braking, brake return,
Car slipping is braked, backward spanner handle, and the swash plate of each pump and motor inverts, and negative sense pump oil, produces reverse actuating force, pulled more after handle
Resolutely, brake force is bigger.
The advantages of the utility model is
1. in closed system, the oil inlet pipe of hydraulic pump is directly connected with the oil return pipe of executive component, and working fluid is being
Closed circulation is carried out in the pipeline of system.Closed system structure is more compact, and less with air contact chance, air is not easy introgression line
System, therefore the stationarity being driven is good.
2. the speed change of operating mechanism and commutation are realized by adjusting the stroking mechanism of pump or motor, avoid and changed in open system
To the hydraulic shock appeared in process and energy loss.
3. closed system takes bidirectional variable hydraulic pump, the flow of hydraulic oil and side in working connection are changed by the variable of pump
To realize speed change and the commutation of fulfiling mechanism, this restraining method, sufficient can embody hydraulicdriven strong point.
4. current closed system variable pump is integrated structure, the function valve group collection such as slippage pump and repairing, overflow, control
Into on hydraulic pump, making pipeline connection become simple, installation space is not only reduced, but also reduce as caused by connecting pipeline
Leakage and pipe vibration, improve the reliability of system, simplify operating process.
5. oil-supplementing system can not only ensure the response of positive displacement transmission when the discharge capacity of main pump changes, system is improved
Operating frequency, moreover it is possible to increase pressure at main pump oil inlet, prevent from producing cavitation erosion during big flow, the rotating speed of pump can be effectively improved and prevented
Only pumping is empty, improves working life;Filter is housed in oil-supplementing system, improves the reliability and service life of transmission device;Separately
Outside, slippage pump can easily also provide power for some low pressure auxiliary bodies.
6. being drawn due to only having a small amount of fluid from fuel tank, reduce the loss of fuel tank.
7. carry parking device（Hydraulic control brake disc）Motor, solve parking well and start that supercharging is anti-to creep
Problem, can provide good parking performance and start reliability.
Above-described is only the preferred embodiment of the utility model, it is noted that for those skilled in the art
For, under the premise of the utility model general idea is not departed from, some changes and improvements can also be made, these should also be considered as
The scope of protection of the utility model.
Claims (5)
- A kind of 1. tobacco harvesting machine driven using closed type hydraulic system, it is characterised in that：Including fuel tank（20）With with fuel tank （20）The hydraulic circuit of connection, the hydraulic circuit include：Walking hydraulic pressure pump assembly（1）, the walking hydraulic pressure pump assembly（1）Interior setting and fuel tank（20）The feed circuit of connection and return Oil return line；Trailing wheel hydraulic motor assembly I（7）With trailing wheel hydraulic motor assembly II（11）, the trailing wheel hydraulic motor assembly I（7）With it is rear Take turns hydraulic motor assembly II（11）With hydraulic pressure pump assembly of walking（1）Connected by oil circuit, and the trailing wheel hydraulic motor assembly I （7）With trailing wheel hydraulic motor assembly II（11）With hydraulic pressure pump assembly of walking（1）Between have set brake valve（5）Oil circuit；Front-wheel hydraulic motor assembly（15）, the front-wheel hydraulic motor assembly（15）With hydraulic pressure pump assembly of walking（1）Pass through oil circuit Connection.
- A kind of 2. tobacco harvesting machine driven using closed type hydraulic system according to claim 1, it is characterised in that：It is described Walking hydraulic pressure pump assembly（1）Interior feed circuit includes and fuel tank（20）The repairing gear pump of connection（4）, repairing gear pump（4） On be connected with plunger pump（3）, oil return circuit includes safety valve（6）, safety valve（6）Pass through radiator（18）, filter（19）Even Connected tank（20）, plunger pump（3）Pass through oil circuit connection safety valve（6）, trailing wheel hydraulic motor assembly I（7）, trailing wheel hydraulic motor it is total Into II（11）, front-wheel hydraulic motor assembly（15）.
- A kind of 3. tobacco harvesting machine driven using closed type hydraulic system according to claim 2, it is characterised in that：It is described Trailing wheel hydraulic motor assembly I（7）Including left rear wheel walking piston motor（9）With left rear wheel brake（8）, trailing wheel hydraulic motor is total Into II（11）Including off hind wheel walking piston motor（13）With off hind wheel brake（12）, left rear wheel walking piston motor（9）With Off hind wheel walking piston motor（13）Plunger pump is connected by oil circuit（3）, left rear wheel brake（8）With off hind wheel brake （12）Pass through brake valve（5）Connect repairing gear pump（4）.
- A kind of 4. tobacco harvesting machine driven using closed type hydraulic system according to claim 2, it is characterised in that：It is described Front-wheel hydraulic motor assembly（15）Including front-wheel walking piston motor（16）, the front-wheel walking piston motor（16）Pass through oil circuit Connect plunger pump（3）.
- A kind of 5. tobacco harvesting machine driven using closed type hydraulic system according to claim 2, it is characterised in that：It is described Safety valve（6）For the valve block formed comprising a safety valve and four check valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720457616.0U CN207297490U (en) | 2017-04-27 | 2017-04-27 | A kind of tobacco harvesting machine driven using closed type hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720457616.0U CN207297490U (en) | 2017-04-27 | 2017-04-27 | A kind of tobacco harvesting machine driven using closed type hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207297490U true CN207297490U (en) | 2018-05-01 |
Family
ID=62271458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720457616.0U Active CN207297490U (en) | 2017-04-27 | 2017-04-27 | A kind of tobacco harvesting machine driven using closed type hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207297490U (en) |
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2017
- 2017-04-27 CN CN201720457616.0U patent/CN207297490U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 450000 room 431-437, block a, No. 55, Lianhua street, high tech Industrial Development Zone, Zhengzhou, Henan Province Patentee after: Henan nongxianfeng Technology Co.,Ltd. Address before: Room 303-306, block C1a, National University Science Park, 11 Changchun Road, high tech Zone, Zhengzhou City, Henan Province, 450000 Patentee before: ZHENGZHOU RONGDA TECHNOLOGY Co.,Ltd. |
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