CN207083697U - A kind of low energy consumption load-sensitive hydraulic pressure drive control system structure of planting machine - Google Patents
A kind of low energy consumption load-sensitive hydraulic pressure drive control system structure of planting machine Download PDFInfo
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- CN207083697U CN207083697U CN201721003818.4U CN201721003818U CN207083697U CN 207083697 U CN207083697 U CN 207083697U CN 201721003818 U CN201721003818 U CN 201721003818U CN 207083697 U CN207083697 U CN 207083697U
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Abstract
The utility model discloses a kind of low energy consumption load-sensitive hydraulic pressure drive control system structure of planting machine, including sliding loader frame, walking loop, rear support leg loop, large arm loop, pose adjustment loop, front shovel folding loop and tree shovel loop, also include diesel engine, load-reacting hydraulic planger pump, load sensing multi-way valve, shuttle valve, each loop is connected with respective corresponding load sensing multi-way valve, the load sensing multi-way valve is connected by pressure feedback signal passage with shuttle valve and by pressure feedback maximum in each loop to load-sensitive valve, the load-sensitive valve is according to the load sensing multi-way valve, the discharge capacity of load-reacting hydraulic planger pump described in the feedback regulation of shuttle valve.The utility model by above structure, effectively solve planting machine during Wa Shu, the work of each executing agency when, flow supply distribution is not reasonable, operation poor controllability, the problem of energy consumption is big.
Description
Technical field
The present invention relates to the low energy consumption load-sensitive hydraulic pressure in agricultural and forestry machinery field, more particularly to a kind of planting machine to pass
Dynamic control structure.
Background technology
With the quickening of Chinese city transformation process, city gradually increases the demand of greening, nursery stock, to urban vegetation
The requirement of survival rate also more and more higher.The root that the appearance of planting machine can not only protect trees, the survival rate of transplanting is improved, and
And manpower and materials are greatly saved, operating cost is reduced, improves operating efficiency.At present, some flowers that in the market occurs
For flap-type planting machine more using banked direction control valves as main control valve, the major power loss of this kind of system includes the throttling in each hydraulic circuit
Loss, executing agency start and the spill losses in braking procedure, large arm decline during losses of potential energy and engine and
Loss caused by hydraulic system power matching is not high.It can be seen that such planting machine is substantially deposited in operation in the market
Unreasonable distribution is supplied in flow, the problems such as operation poor controllability and big power loss.
The content of the invention
The utility model is clearly present flow supply unreasonable distribution in operation for existing planting machine, and operation is controllable
Property difference and the defects of big power loss, the low energy consumption load-sensitive hydraulic pressure drive control system knot of planting machine a kind of is provided for this
Structure.
In order to solve the above-mentioned technical problem, the utility model is achieved through the following technical solutions：
A kind of low energy consumption load-sensitive hydraulic pressure drive control system structure of planting machine, including sliding loader frame, walk back
Road, rear support leg loop, large arm loop, pose adjustment loop, front shovel folding loop and tree shovel loop, in addition to it is diesel engine, negative
Sensitive variable hydraulic planger pump, load sensing multi-way valve, shuttle valve are carried, the diesel engine, load-reacting hydraulic planger pump, is born
Load sensing multi-way valve, shuttle valve are arranged in the sliding loader frame, and the load-reacting hydraulic planger pump includes
Load-sensitive valve, pressure-compensated valve, piston cylinder, the clutch end of the diesel engine and the load-reacting hydraulic plunger
Pump connects, and the delivery outlet of the load-reacting hydraulic planger pump passes through output oil pipe and the load sensing multi-way valve oil-feed
Mouth connection, the walking loop include running motor, pressure-reducing valve, walking reversal valve, and the rear support leg loop includes rear support leg liquid
Cylinder pressure, rear support leg overflow valve, rear support leg check valve, it is unidirectional that the large arm loop includes big arm hydraulic cylinder, large arm overflow valve, large arm
Valve, the pose adjustment loop include pose adjustment hydraulic cylinder, pose adjustment overflow valve, pose adjustment check valve, the front shovel
Folding loop includes front shovel folding hydraulic cylinder, front shovel folding overflow valve, front shovel folding check valve, and the tree shovel loop includes commutation
Valve, tree shovel hydraulic cylinder, the walking loop, rear support leg loop, large arm loop, pose adjustment loop, front shovel folding loop and
Tree shovel loop is connected with respective corresponding load sensing multi-way valve, and the load sensing multi-way valve passes through pressure feedback signal
Passage is connected with shuttle valve and by pressure feedback maximum in each loop to load-sensitive valve, and the load-sensitive valve is according to described negative
Carry the discharge capacity of load-reacting hydraulic planger pump described in the feedback regulation of sensing multi-way valve, shuttle valve.
Sliding loader frame is diesel engine, load-reacting hydraulic planger pump, load sensing multi-way valve, shuttle valve provide
Bearing space.It is to control planting machine freely to walk to be provided with walking loop, and it is to plant to be provided with rear support leg loop
Increase the support span of planting machine in the tree machine course of work, improve the overall stability of fuselage, while do not interfere with crane
Mobility.It is in order to by controlling big arm hydraulic cylinder to realize the lifting function of planting machine large arm to be provided with large arm loop.Set
There is pose adjustment loop to be to allow user to control pose adjustment hydraulic cylinder according to actual conditions to adjust tree shovel in time
Working depth.It is to control opening for front shovel folding hydraulic cylinder according to actual conditions for the ease of user to be provided with front shovel folding loop
Close angle degree, and then final tree ball size is adjusted, facilitate final shifting tree operation.It is to pass through control to be provided with tree shovel loop
Tree shovel hydraulic cylinder is acted to control tree to shovel component with completing excavation.It is to drive that diesel engine is provided with sliding loader frame
Dynamic load sensitive variable hydraulic plunger oil pump feed, pass through multiple oil-outs of load sensing multi-way valve landing leg hydraulic cylinder, big backward
Arm hydraulic cylinder, pose adjustment hydraulic cylinder, front shovel folding hydraulic cylinder, tree shovel hydraulic cylinder and these executing agencies of running motor supply
Oil, the job requirement in required flow, pressure different multiple loops, multiple executing agencies can not only be met simultaneously, and can
The discharge capacity of load-reacting hydraulic planger pump is automatically adjusted according to the valve core opening amount of load sensing multi-way valve.It is provided with shuttle valve
It is to detect the maximum pressure in loop corresponding thereto in each executing agency at work, and this pressure is passed through into height
Moulding pipe joint feeds back to control signal of the load-reacting hydraulic planger pump as variable, load-reacting hydraulic plunger
Pump automatically adjusts the discharge capacity of pump to meet the different multiple loops of required flow, pressure, multiple execution according to load feedback signal
The job requirement of element.The utility model by above structure, effectively solve planting machine during Wa Shu, respectively perform machine
When structure works, not reasonable, the operation poor controllability of flow supply distribution, the problem of energy consumption is big.
Preferably, a kind of low energy consumption load-sensitive hydraulic pressure drive control system structure of planting machine described above, described to subtract
Pressure valve, walking reversal valve, rear support leg overflow valve, rear support leg check valve, large arm overflow valve, large arm check valve, pose adjustment overflow
Valve, pose adjustment check valve, front shovel folding overflow valve, front shovel folding check valve, reversal valve, shuttle valve, load sensing multi-way valve group
Into solenoid-operated proportional module valve group, the solenoid-operated proportional module valve group is arranged in the sliding loader frame.
By pressure-reducing valve, walking reversal valve, rear support leg overflow valve, rear support leg check valve, large arm overflow valve, large arm check valve,
Pose adjustment overflow valve, pose adjustment check valve, front shovel folding overflow valve, front shovel folding check valve, reversal valve, shuttle valve, load
The integrated composition solenoid-operated proportional module valve group of sensing multi-way valve rationally can effectively carry out space trace arrangements, prevent circuit because
Short circuit, the generation of misconnection phenomenon caused by excessively lengthy and jumbled.
Preferably, a kind of low energy consumption load-sensitive hydraulic pressure drive control system structure of planting machine described above, the electricity
Magnetic ratio module valve group includes the first solenoid-operated proportional valve module group, the second solenoid-operated proportional valve module group, first solenoid-operated proportional
Valve module group includes load sensing multi-way valve, the shuttle valve being connected with the rear support leg loop, front shovel folding loop, tree shovel loop,
Also include rear support leg overflow valve, rear support leg check valve, front shovel folding overflow valve, front shovel folding check valve, reversal valve, described second
Solenoid-operated proportional valve module group include be connected with the large arm loop, pose adjustment loop, walking loop load sensing multi-way valve,
Shuttle valve, in addition to large arm overflow valve, large arm check valve, pose adjustment overflow valve, pose adjustment check valve, pressure-reducing valve, walking change
To valve, the first solenoid-operated proportional valve module group is connected with the second solenoid-operated proportional valve module group by high-pressure rubber pipe.
It is the first solenoid-operated proportional valve module group, the second solenoid-operated proportional valve module group by solenoid-operated proportional modular valve component, can be with
Make space trace arrangements more reasonable, be more easily connected with miscellaneous part, can further prevent circuit because excessively
Short circuit, the generation of misconnection phenomenon caused by lengthy and jumbled.
Preferably, a kind of low energy consumption load-sensitive hydraulic pressure drive control system structure of planting machine described above, described negative
The signal output interface for carrying sensing multi-way valve is connected with the signal input interface of the shuttle valve by feedback signal pipe, the shuttle valve
Signal output interface be connected with the signal input interface of the load-sensitive valve by feedback signal pipe.
By above structure, then in the course of the work, running motor that shuttle valve detects, rear support leg hydraulic cylinder, large arm liquid
Maximum working pressure energy in the executing agencies such as cylinder pressure, pose adjustment hydraulic cylinder, front shovel folding hydraulic cylinder and tree shovel hydraulic cylinder
The enough control that this force information back is stably used as to variable by feedback signal pipe to load-reacting hydraulic planger pump
Signal.When each executing agency does not work, feeding back to the control signal of load-reacting hydraulic planger pump makes during it is in
The armed state of position, no flow output, load sensing multi-way valve valve element are in interposition, and now the pressure of load-sensitive valve is negative
Carry the setting load-sensitive compensation pressure of sensitive variable hydraulic planger pump.
Preferably, a kind of low energy consumption load-sensitive hydraulic pressure drive control system structure of planting machine described above, described negative
Certain of load sensing multi-way valve is all the way or valve core of multiway valve commutation, corresponding load pressure can be anti-by pressure warp by the shuttle valve
The load-sensitive valve that feedback signal pipe is sent on the load-reacting hydraulic planger pump.
Load-reacting hydraulic planger pump experiences the demand of system pressure and flow, is conveyed to and held by output system
Flow needed for row mechanism.When a certain executing agency or certain several executing agency's work, detected by the shuttle valve in loop
After maximum working pressure in each executing agency, give this pressure feedback to load-reacting hydraulic planger pump, now load quick
Variable delivery hydraulic plunger pump output hydraulic pressure oil is felt, untill reaching the flow consistent with load sensing multi-way valve valve core opening.
Preferably, a kind of low energy consumption load-sensitive hydraulic pressure drive control system structure of planting machine described above, the row
Walk loop, rear support leg loop, large arm loop, pose adjustment loop, front shovel folding loop and tree shovel loop it is respective load it is quick
The oil inlet of sense banked direction control valves is connected with the main oil pipe of described load-reacting hydraulic planger pump oil-feed port by pipe joint, institute
It is respective negative to state walking loop, rear support leg loop, large arm loop, pose adjustment loop, front shovel folding loop and tree shovel loop
The oil return opening for carrying sensing multi-way valve is connected simultaneously oil return to fuel tank with oil return pipe by pipe joint.
Pass through above structure so that oil feed line is more stable at work for planting machine, with ensureing planting machine normal table
Operation.
Brief description of the drawings
Fig. 1 is a kind of structure connection of the low energy consumption load-sensitive hydraulic pressure drive control system structure of planting machine of the utility model
Figure；
Fig. 2 is a kind of structural representation of the low energy consumption load-sensitive hydraulic pressure drive control system structure of planting machine of the utility model
One；
Fig. 3 is a kind of structural representation of the low energy consumption load-sensitive hydraulic pressure drive control system structure of planting machine of the utility model
Two.
Embodiment
1-3 and embodiment are described in further detail to the utility model below in conjunction with the accompanying drawings, but they are not
To limitation of the present utility model：
Embodiment 1
As shown in Figure 1 to Figure 3, the low energy consumption load-sensitive hydraulic pressure drive control system structure of a kind of planting machine, including sliding dress
Carrier aircraft frame 11, walking loop 2, rear support leg loop 3, large arm loop 4, pose adjustment loop 5, front shovel folding loop 6 and tree
Shovel loop 7, in addition to diesel engine 9, load-reacting hydraulic planger pump 10, load sensing multi-way valve 1, shuttle valve 8, the diesel oil
Machine 9, load-reacting hydraulic planger pump 10, load sensing multi-way valve 1, shuttle valve 8 are arranged at the sliding loader frame
On 11, the load-reacting hydraulic planger pump 10 includes load-sensitive valve 101, pressure-compensated valve 102, piston cylinder 103, institute
The clutch end for stating diesel engine 9 is connected with the load-reacting hydraulic planger pump 10, the load-reacting hydraulic pressure
The delivery outlet of plunger pump 10 is connected by output oil pipe with the oil inlet of load sensing multi-way valve 1, and the walking loop 2 includes
Running motor 21, pressure-reducing valve 22, walking reversal valve 23, the rear support leg loop 3 includes rear support leg hydraulic cylinder 31, rear support leg overflow
Valve 32, rear support leg check valve 33, the large arm loop 4 include big arm hydraulic cylinder 41, large arm overflow valve 42, large arm check valve 43,
The pose adjustment loop 5 includes pose adjustment hydraulic cylinder 51, pose adjustment overflow valve 52, pose adjustment check valve 53, described
Front shovel folding loop 6 includes front shovel folding hydraulic cylinder 61, front shovel folding overflow valve 62, front shovel folding check valve 63, the tree shovel
Loop 7 includes reversal valve 71, tree shovel hydraulic cylinder 72, and the walking loop 2, rear support leg loop 3, large arm loop 4, pose adjustment return
Road 5, front shovel folding loop 6 and tree shovel loop 7 are connected with respective corresponding load sensing multi-way valve 1, and the load is quick
Sense banked direction control valves 1 is connected by pressure feedback signal passage with shuttle valve 8 and by pressure feedback maximum in each loop to load-sensitive
Valve 101, the load-sensitive valve 101 according to the load sensing multi-way valve 1, shuttle valve 8 feedback regulation described in load-sensitive become
Measure the discharge capacity of hydraulic planger pump 10.
When single executing agency works, exemplified by setting shovel structure, loop 7, the downstream of load sensing multi-way valve 1 are shoveled for tree
Load pressure be set shovel load pressure load-sensitive valve is fed back to by the load signal passage of load sensing multi-way valve 1
101.When load pressure becomes larger, load-sensitive valve 101 can gradually increase the row of load-reacting hydraulic planger pump 10
Amount, makes the upstream pressure of load sensing multi-way valve 1 gradually increase.Likewise, when load pressure tapers into, load-sensitive valve
101 can be gradually reduced the discharge capacity of load-reacting hydraulic planger pump 10, reduce the upstream pressure of load sensing multi-way valve 1.
As described above, load sensing multi-way valve 1 by constantly sense tree shovel mechanism load change feed back to load-sensitive valve 101 so as to
The discharge capacity of load-reacting hydraulic planger pump 10 is adjusted, to maintain the pressure difference at the both ends of load sensing multi-way valve 1 to keep constant, is subtracted
The hydraulic energy loss of shovel structure is set less.
When there is multiple executing agencies to work, shuttle valve 8 is compared to the load pressure of each executing agency, wherein maximum
Load pressure the negative of load-reacting hydraulic planger pump 10 is fed back to by the load signal passage of load sensing multi-way valve 1
Carry sensitive valve 101.When load pressure becomes larger, load-sensitive valve 101 can gradually increase load-reacting hydraulic plunger
The discharge capacity of pump 10, increase the upstream pressure of load sensing multi-way valve 1.Likewise, when load pressure tapers into, load is quick
Sense valve 101 can be gradually reduced the discharge capacity of load-reacting hydraulic planger pump 10, make the upstream pressure of load sensing multi-way valve 1 by
It is decrescence small, so as to maintain the pressure difference at the both ends of load sensing multi-way valve 1 to keep constant, so as to reduce the hydraulic energy of each executing agency
Amount loss.
Preferably, the pressure-reducing valve 22, walking reversal valve 23, rear support leg overflow valve 32, rear support leg check valve 33, large arm
Overflow valve 42, large arm check valve 43, pose adjustment overflow valve 52, pose adjustment check valve 53, front shovel folding overflow valve 62, front shovel
Folding check valve 63, reversal valve 71, shuttle valve 8, load sensing multi-way valve 1 form solenoid-operated proportional module valve group 12, the electromagnetism ratio
Example module valve group 12 is arranged in the sliding loader frame 11.
Preferably, the solenoid-operated proportional valve module group 12 includes the first solenoid-operated proportional valve module group 12a, the second electromagnetism ratio
Example valve module group 12b, the first solenoid-operated proportional valve module group 12a include with the rear support leg loop 3, front shovel folding loop 6,
The connected load sensing multi-way valve 1 in tree shovel loop 7, shuttle valve 8, in addition to rear support leg overflow valve 32, rear support leg check valve 33, front shovel
Folding overflow valve 62, front shovel folding check valve 63, reversal valve 71, the second solenoid-operated proportional valve module group 12b include with it is described
The connected load sensing multi-way valve 1 of large arm loop 4, pose adjustment loop 5, walking loop 2, shuttle valve 8, in addition to large arm overflow valve
42nd, large arm check valve 43, pose adjustment overflow valve 52, pose adjustment check valve 53, pressure-reducing valve 22, walking reversal valve 23, it is described
First solenoid-operated proportional valve module group 12a is connected with the second solenoid-operated proportional valve module group 12b by high-pressure rubber pipe.
Preferably, the signal input interface of the signal output interface of the load sensing multi-way valve 1 and the shuttle valve 8 leads to
The connection of feedback signal pipe is crossed, the signal input interface of the signal output interface of the shuttle valve 8 and the load-sensitive valve 101 passes through
Feedback signal pipe connects.
Preferably, certain of the load sensing multi-way valve 1 all the way or valve core of multiway valve commutation, corresponding load pressure meeting
The load-sensitive for being sent into the pressure on the load-reacting hydraulic planger pump 10 through feedback signal pipe by the shuttle valve 8
Valve 101.
Preferably, the walking loop 2, rear support leg loop 3, large arm loop 4, pose adjustment loop 5, front shovel folding time
The oil inlet and described load-reacting hydraulic planger pump 10 of road 6 and the tree shovel respective load sensing multi-way valve 1 in loop 7
The main oil pipe of oil-feed port is connected by pipe joint, the walking loop 2, rear support leg loop 3, large arm loop 4, pose adjustment loop
5th, the oil return opening and oil return pipe of front shovel folding loop 6 and the tree shovel respective load sensing multi-way valve 1 in loop 7 are connected by pipe joint
Simultaneously oil return is connect to fuel tank.
In a word, preferred embodiment of the present utility model, all scopes according to present utility model application patent be the foregoing is only
The equivalent changes and modifications made, it should all belong to covering scope of the present utility model.
Claims (6)
1. a kind of low energy consumption load-sensitive hydraulic pressure drive control system structure of planting machine, including sliding loader frame（11）, walking
Loop（2）, rear support leg loop（3）, large arm loop（4）, pose adjustment loop（5）, front shovel folding loop（6）And tree shovel loop
（7）, it is characterised in that：Also include diesel engine（9）, load-reacting hydraulic planger pump（10）, load sensing multi-way valve（1）、
Shuttle valve（8）, the diesel engine（9）, load-reacting hydraulic planger pump（10）, load sensing multi-way valve（1）, shuttle valve（8）
It is arranged on the sliding loader frame（11）On, the load-reacting hydraulic planger pump（10）Including load-sensitive valve
（101）, pressure-compensated valve（102）, piston cylinder（103）, the diesel engine（9）Clutch end and the load-reacting
Hydraulic planger pump（10）Connection, the load-reacting hydraulic planger pump（10）Delivery outlet by output oil pipe with it is described negative
Carry sensing multi-way valve（1）Oil inlet connects, the walking loop（2）Including running motor（21）, pressure-reducing valve（22）, walking commutation
Valve（23）, the rear support leg loop（3）Including rear support leg hydraulic cylinder（31）, rear support leg overflow valve（32）, rear support leg check valve
（33）, the large arm loop（4）Including big arm hydraulic cylinder（41）, large arm overflow valve（42）, large arm check valve（43）, the posture
Adjust loop（5）Including pose adjustment hydraulic cylinder（51）, pose adjustment overflow valve（52）, pose adjustment check valve（53）, it is described
Front shovel folding loop（6）Including front shovel folding hydraulic cylinder（61）, front shovel folding overflow valve（62）, front shovel folding check valve（63）,
The tree shovel loop（7）Including reversal valve（71）, tree shovel hydraulic cylinder（72）, the walking loop（2）, rear support leg loop（3）, it is big
Arm loop（4）, pose adjustment loop（5）, front shovel folding loop（6）And tree shovel loop（7）With each corresponding load
Sensing multi-way valve（1）It is connected, the load sensing multi-way valve（1）Pass through pressure feedback signal passage and each self-corresponding shuttle valve
（8）It is connected and by pressure feedback maximum in each loop to load-sensitive valve（101）, the load-sensitive valve（101）According to institute
State load sensing multi-way valve（1）, shuttle valve（8）Feedback regulation described in load-reacting hydraulic planger pump（10）Discharge capacity.
2. a kind of low energy consumption load-sensitive hydraulic pressure drive control system structure of planting machine according to claim 1, its feature exist
In：The pressure-reducing valve（22）, walking reversal valve（23）, rear support leg overflow valve（32）, rear support leg check valve（33）, large arm overflow valve
（42）, large arm check valve（43）, pose adjustment overflow valve（52）, pose adjustment check valve（53）, front shovel folding overflow valve（62）、
Front shovel folding check valve（63）, reversal valve（71）, shuttle valve（8）, load sensing multi-way valve（1）Form solenoid-operated proportional module valve group
（12）, the solenoid-operated proportional module valve group（12）It is arranged on the sliding loader frame（11）On.
3. a kind of low energy consumption load-sensitive hydraulic pressure drive control system structure of planting machine according to claim 2, its feature exist
In：The solenoid-operated proportional module valve group（12）Including the first solenoid-operated proportional valve module group（12a）, the second solenoid-operated proportional valve module group
（12b）, the first solenoid-operated proportional valve module group（12a）Including with the rear support leg loop（3）, front shovel folding loop（6）, tree
Shovel loop（7）Connected load sensing multi-way valve（1）, shuttle valve（8）, in addition to rear support leg overflow valve（32）, rear support leg check valve
（33）, front shovel folding overflow valve（62）, front shovel folding check valve（63）, reversal valve（71）, the second solenoid-operated proportional valve module
Group（12b）Including with the large arm loop（4）, pose adjustment loop（5）, walking loop（2）Connected load sensing multi-way valve
（1）, shuttle valve（8）, in addition to large arm overflow valve（42）, large arm check valve（43）, pose adjustment overflow valve（52）, pose adjustment list
To valve（53）, pressure-reducing valve（22）, walking reversal valve（23）, the first solenoid-operated proportional valve module group（12a）With the described second electricity
Magnetic ratio valve module group（12b）Connected by high-pressure rubber pipe.
4. a kind of low energy consumption load-sensitive hydraulic pressure drive control system structure of planting machine according to claim 1, its feature exist
In：The load sensing multi-way valve（1）Signal output interface and the shuttle valve（8）Signal input interface pass through feedback signal
Pipe connects, the shuttle valve（8）Signal output interface and the load-sensitive valve（101）Signal input interface pass through feedback letter
The connection of number pipe.
5. a kind of low energy consumption load-sensitive hydraulic pressure drive control system structure of planting machine according to claim 4, its feature exist
In：The load sensing multi-way valve（1）Certain all the way or valve core of multiway valve commutation, corresponding load pressure can pass through the shuttle valve
（8）The pressure is sent into the load-reacting hydraulic planger pump through feedback signal pipe（10）On load-sensitive valve（101）.
6. a kind of low energy consumption load-sensitive hydraulic pressure drive control system structure of planting machine according to claim 1, its feature exist
In：The walking loop（2）, rear support leg loop（3）, large arm loop（4）, pose adjustment loop（5）, front shovel folding loop（6）
And tree shovel loop（7）Each self-corresponding load sensing multi-way valve（1）Oil inlet and described load-reacting hydraulic column
Fill in pump（10）The main oil pipe of oil-feed port is connected by pipe joint, the walking loop（2）, rear support leg loop（3）, large arm loop
（4）, pose adjustment loop（5）, front shovel folding loop（6）And tree shovel loop（7）Each self-corresponding load sensing multi-way valve（1）
Oil return opening and oil return pipe be connected by pipe joint and oil return is to fuel tank.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721003818.4U CN207083697U (en) | 2017-08-11 | 2017-08-11 | A kind of low energy consumption load-sensitive hydraulic pressure drive control system structure of planting machine |
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| CN201721003818.4U CN207083697U (en) | 2017-08-11 | 2017-08-11 | A kind of low energy consumption load-sensitive hydraulic pressure drive control system structure of planting machine |
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| CN207083697U true CN207083697U (en) | 2018-03-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113854094A (en) * | 2021-09-28 | 2021-12-31 | 徐工集团工程机械股份有限公司科技分公司 | Green transplanting machine |
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2017
- 2017-08-11 CN CN201721003818.4U patent/CN207083697U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113854094A (en) * | 2021-09-28 | 2021-12-31 | 徐工集团工程机械股份有限公司科技分公司 | Green transplanting machine |
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