CN208764008U - Hydraulic system of chassis - Google Patents
Hydraulic system of chassis Download PDFInfo
- Publication number
- CN208764008U CN208764008U CN201821367966.9U CN201821367966U CN208764008U CN 208764008 U CN208764008 U CN 208764008U CN 201821367966 U CN201821367966 U CN 201821367966U CN 208764008 U CN208764008 U CN 208764008U
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- control valve
- directional control
- solenoid directional
- valve
- chassis
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Abstract
The utility model discloses a kind of hydraulic system of chassis, belong to technical field of engineering machinery.It solve traditional chassis system in the prior art with hydraulic system of working mutually indepedent, hydraulic system of chassis reliability and the poor defect of energy saving.Its main structure includes chassis hydraulic system of working, steering hydraulic system, working barrel and chassis pump, working barrel is connect with chassis hydraulic system of working, chassis pump is connect with steering hydraulic system, and the chassis pump is connect by pressure-gradient control valve and second one-way valve with chassis hydraulic system of working.The utility model is mainly used in engineering machinery.
Description
Technical field:
The utility model belongs to technical field of engineering machinery, specifically, more particularly to a kind of hydraulic system of chassis.
Background technique:
From the point of view of the development of engineering machinery in recent years, loading machine chassis differentiated products type persistently increases, roof-bolter, chisel
Rock machine, spraying machine and wet-spraying machine etc. have become indispensable product in Tunnel Engineering, play in tunneling more next
More important work, these equipment become more and more important the high reliability on chassis.
Mostly based on automobile chassis, what is be primarily present is asked on the chassis such as common roof-bolter, rock drill, spraying machine and wet-spraying machine
Topic is relatively narrower inside tunnel, and mainly for bridge as turning to, turning radius was larger in the past for automobile chassis；Automobile chassis system is with work
Hydraulic system is mutually indepedent, when using motor drive operational system, if to adjust supporting leg need to be activated individually automobile chassis again,
It is extremely inconvenient；And hydraulic system of chassis reliability and energy saving are general.
As shown in fig. 7, the valve body of hydraulic lock in the prior art is individually to do a valve block and connect upper pipeline, cost
Height, reliability are low.
Summary of the invention:
In order to solve in the prior art, traditional chassis system is mutually indepedent with hydraulic system of working, adjusts supporting leg individually to open
Inconvenient, hydraulic system of chassis reliability and the poor disadvantage of energy saving, the utility model provide a kind of difference when dynamic chassis
In the hydraulic system of chassis of the prior art, the chassis hydraulic pressure system of the multiple functions such as supporting leg lifting and motor elevator can be realized
System, high reliablity.
To achieve the goals above, the utility model adopts the following technical solutions realization:
A kind of hydraulic system of chassis, including chassis hydraulic system of working, steering hydraulic system, working barrel and chassis pump, work
Make pump connect with chassis hydraulic system of working, chassis pump is connect with steering hydraulic system, and the chassis, which pumps, passes through pressure-gradient control valve and the
Two check valves are connect with chassis hydraulic system of working.
Further, the chassis hydraulic system of working includes hoisting system, supporting leg jacking system and swing arm telescopic system,
The hoisting system includes hoist motor, bidirectional relief valve, throttle valve and J-type solenoid directional control valve, the throttle valve respectively with volume
Raise motor, bidirectional relief valve is connected with J-type solenoid directional control valve, hoist motor is also connect with bidirectional relief valve.
Further, the supporting leg jacking system includes front leg strut system and rear support leg system, the front leg strut system packet
The right oil cylinder of front leg strut, the first hydraulic lock, the first solenoid directional control valve, the left oil cylinder of front leg strut, the second hydraulic lock and the second electromagnetism is included to change
To valve, first hydraulic lock is connect with the right oil cylinder of front leg strut and the first solenoid directional control valve respectively, the second hydraulic lock respectively with it is preceding
The left oil cylinder of supporting leg and the connection of the second solenoid directional control valve；The rear support leg system includes the right oil cylinder of rear support leg, the 5th hydraulic lock, the 5th
The left oil cylinder of solenoid directional control valve, rear support leg, the 6th hydraulic lock and the 6th solenoid directional control valve, the 5th hydraulic lock respectively with rear support leg
Right oil cylinder and the connection of the 5th solenoid directional control valve, the 6th hydraulic lock are connect with the left oil cylinder of rear support leg and the 6th solenoid directional control valve respectively.
Further, the swing arm telescopic system include front right telescopic oil cylinder, third hydraulic lock, third solenoid directional control valve,
Front left telescopic oil cylinder, the 4th hydraulic lock and the 4th solenoid directional control valve, the third hydraulic lock respectively with front right telescopic oil cylinder and
The connection of three solenoid directional control valves；4th hydraulic lock is connect with front left telescopic oil cylinder and the 4th solenoid directional control valve respectively.
Further, the steering hydraulic system includes diverter and steering cylinder, and the diverter and steering cylinder connect
It connects, the chassis pump is also connect by pressure-gradient control valve with diverter.
Further, first solenoid directional control valve, the second solenoid directional control valve, third solenoid directional control valve, the 4th electromagnetism change
Pass through the first check valve and work after being connected in parallel to valve, the 5th solenoid directional control valve, the 6th solenoid directional control valve and J-type solenoid directional control valve
Make pump connection；The oil inlet of first off-load solenoid valve and the oil inlet of the first overflow valve are connect after being connected in parallel with working barrel, the
The oil return opening of one off-load solenoid valve and the oil return opening of the first overflow valve are connect after being connected in parallel with oil return filter core；Second off-load electromagnetism
The oil inlet of the oil inlet of valve and the second overflow valve be connected in parallel after is connect with pressure-gradient control valve, the oil return opening of the second off-load solenoid valve with
The oil return opening of second overflow valve is connect after being connected in parallel with oil return filter core.
Further, first hydraulic lock is integrated on the right oil cylinder of front leg strut, and the second hydraulic lock is integrated in a front leg strut left side
On oil cylinder, third hydraulic lock is integrated on front right telescopic oil cylinder, and the 4th hydraulic lock is integrated on front left telescopic oil cylinder, and the 5th is hydraulic
Lock is integrated on the right oil cylinder of rear support leg, and the 6th hydraulic lock is integrated on the left oil cylinder of rear support leg.
Further, first solenoid directional control valve, the second solenoid directional control valve, third solenoid directional control valve, the 4th electromagnetism change
It is E type solenoid directional control valve to valve, the 5th solenoid directional control valve and the 6th solenoid directional control valve.
Compared with prior art, the utility model has the beneficial effects that
1, it is that hydraulic lock is external in the prior art, the risk of pipeline leakage easily occurs, hydraulic lock is integrated in the utility model
On oil cylinder, cylinder bottom is assemblied in spool on cylinder bottom as valve block, eliminates the connection of pipeline, reduces the wind of pipeline leakage
Danger, improves reliability, reduces costs；
2, the first solenoid directional control valve, the second solenoid directional control valve, third solenoid directional control valve, the 4th solenoid directional control valve, the 5th electricity
Magnetic reversal valve and the 6th solenoid directional control valve are E type solenoid directional control valve, and at middle position, even if hydraulic lock fails, oil circuit is also to cut
Dead, improve the safety and reliability of system；
3, chassis pump and working barrel can control the operation such as supporting leg and elevator simultaneously, and the chassis pump discharge of the utility model is adopted
With second one-way valve, the pump discharge that works uses the first check valve, can all control chassis hydraulic system of working and two are
The independence of system, while two pumps are respectively equipped with overflow valve as safety valve, guarantee that the pressure of system is mutually independent of each other；
4, in order to reduce the energy consumption of system, the utility model chassis hydraulic system of working uses a pressure-gradient control valve, using CF
Turn to, EF is used to carry out chassis work, in order to make chassis hydraulic system of working when not in use can automatic deloading, this is practical new
Type uses supporting leg solenoid valve (the first solenoid directional control valve, the second solenoid directional control valve, the 5th solenoid directional control valve and the 6th electromagnetic switch
Valve) a mouth with b mouthfuls be powered when and unloading valve a mouth progress linkage control, as long as there is supporting leg work, system not off-load；Together
When motor drive operational pump pumped using the small displacement of 33L/min, provided when engine in situ is stopped working using motor drive dynamic
Power, the operation of supporting leg also link with a mouthfuls of unloading valve, and system is made to reach energy-efficient purpose；
5, the Median Function of hoist motor is J-type, and bidirectional relief valve pressure is set as 50bar, coil of cable is prevented to break, and is rolled up
The oil inlet for raising motor is equipped with throttle valve, facilitates the speed regulation of hoist motor, avoids the revolving speed of hoist motor excessively high.
Detailed description of the invention:
Fig. 1 is the hydraulic schematic diagram of the utility model；
Fig. 2 is the partial enlarged view in Fig. 1 at S；
Fig. 3 is the partial enlarged view in Fig. 1 at T；
Fig. 4 is the partial enlarged view in Fig. 1 at K；
Fig. 5 is that hydraulic lock is integrated in the structural schematic diagram on oil cylinder；
Fig. 6 is the partial enlarged view in Fig. 5 at G；
Fig. 7 is the scheme of installation of hydraulic lock in the prior art.
In figure: 1, J-type solenoid directional control valve；2, the 6th solenoid directional control valve；3, the 6th hydraulic lock；4, the first check valve；5, work
It pumps；6, the first off-load solenoid valve；7, the first overflow valve；8, pressure-gradient control valve；9, chassis pumps；10, the right oil cylinder of front leg strut；11, front right
Telescopic oil cylinder；12, the right oil cylinder of rear support leg；13, oil return filter core；14, throttle valve；15, bidirectional relief valve；16, hoist motor；17,
Second one-way valve；18, the second off-load solenoid valve；19, diverter；20, steering cylinder；21, the left oil cylinder of front leg strut；22, front left is stretched
Contracting oil cylinder；23, the left oil cylinder of rear support leg；24, the first hydraulic lock；25, the second hydraulic lock；26, third hydraulic lock；27, the 4th is hydraulic
Lock；28, the 5th hydraulic lock；29, the second overflow valve；30, the first solenoid directional control valve；31, the second solenoid directional control valve；32, third electricity
Magnetic reversal valve；33, the 4th solenoid directional control valve；34, the 5th solenoid directional control valve；35, cylinder bottom；36, spool；37, steel pipe；38, cylinder
Cylinder.
Specific embodiment:
Below by specific embodiment and in conjunction with attached drawing, the utility model is described in further detail.
Embodiment 1:
As shown in Figs 1-4, a kind of hydraulic system of chassis, including chassis hydraulic system of working, steering hydraulic system, working barrel
5 and chassis pump 9, working barrel 5 is connect with chassis hydraulic system of working, and chassis pumps and 9 connect with steering hydraulic system, the chassis
Pump 9 is connect by pressure-gradient control valve 8 and second one-way valve 17 with chassis hydraulic system of working.
Embodiment 2:
A kind of hydraulic system of chassis, the chassis hydraulic system of working include hoisting system, supporting leg jacking system and swing arm
Telescopic system, the hoisting system include hoist motor 16, bidirectional relief valve 15, throttle valve 14 and J-type solenoid directional control valve 1, institute
Throttle valve 14 is stated to connect with hoist motor 16, bidirectional relief valve 15 and J-type solenoid directional control valve 1 respectively, hoist motor 16 also with it is double
It is connected to overflow valve 15.
The supporting leg jacking system includes front leg strut system and rear support leg system, and the front leg strut system includes the front leg strut right side
Oil cylinder 10, the first hydraulic lock 24, the first solenoid directional control valve 30, the left oil cylinder 21 of front leg strut, the second hydraulic lock 25 and the second electromagnetism change
To valve 31, first hydraulic lock 24 is connect with the right oil cylinder 10 of front leg strut and the first solenoid directional control valve 30 respectively, the second hydraulic lock
25 connect with the left oil cylinder 21 of front leg strut and the second solenoid directional control valve 31 respectively；The rear support leg system includes the right oil cylinder of rear support leg
12, the 5th hydraulic lock 28, the 5th solenoid directional control valve 34, the left oil cylinder 23 of rear support leg, the 6th hydraulic lock 3 and the 6th solenoid directional control valve 2,
5th hydraulic lock 28 is connect with the right oil cylinder 12 of rear support leg and the 5th solenoid directional control valve 34 respectively, the 6th hydraulic lock 3 respectively with
The left oil cylinder 23 of rear support leg and the connection of the 6th solenoid directional control valve 2.
The swing arm telescopic system includes front right telescopic oil cylinder 11, third hydraulic lock 26, third solenoid directional control valve 32, front left
Telescopic oil cylinder 22, the 4th hydraulic lock 27 and the 4th solenoid directional control valve 33, the third hydraulic lock 26 respectively with front right telescopic oil cylinder
11 and third solenoid directional control valve 32 connect；4th hydraulic lock 27 respectively with front left telescopic oil cylinder 22 and the 4th solenoid directional control valve
33 connections.
The steering hydraulic system includes diverter 19 and steering cylinder 20, and the diverter 19 connects with steering cylinder 20
It connects, the chassis pump 9 is also connect by pressure-gradient control valve 8 with diverter 19.
First solenoid directional control valve 30, the second solenoid directional control valve 31, third solenoid directional control valve 32, the 4th solenoid directional control valve
33, pass through the first check valve 4 after the 5th solenoid directional control valve 34, the 6th solenoid directional control valve 2 and J-type solenoid directional control valve 1 are connected in parallel
It is connect with working barrel 5；The oil inlet of the oil inlet of first off-load solenoid valve 6 and the first overflow valve 7 is connected in parallel rear and working barrel 5
The oil return opening of connection, the oil return opening of the first off-load solenoid valve 6 and the first overflow valve 7 is connect after being connected in parallel with oil return filter core 13；
The oil inlet of the oil inlet of second off-load solenoid valve 18 and the second overflow valve 29 is connect after being connected in parallel with pressure-gradient control valve 8, and second unloads
The oil return opening of the oil return opening of charged magnet valve 18 and the second overflow valve 29 is connect after being connected in parallel with oil return filter core 13.
First solenoid directional control valve 30, the second solenoid directional control valve 31, third solenoid directional control valve 32, the 4th solenoid directional control valve
33, the 5th solenoid directional control valve 34 and the 6th solenoid directional control valve 2 are E type solenoid directional control valve.
First hydraulic lock 24 is integrated on the right oil cylinder 10 of front leg strut, and the second hydraulic lock 25 is integrated in the left oil cylinder of front leg strut
On 21, third hydraulic lock 26 is integrated on front right telescopic oil cylinder 11, and the 4th hydraulic lock 27 is integrated on front left telescopic oil cylinder 22,
5th hydraulic lock 28 is integrated on the right oil cylinder 12 of rear support leg, and the 6th hydraulic lock 3 is integrated on the left oil cylinder 23 of rear support leg.
As seen in figs. 5-6, hydraulic lock is made of valve body and spool 36, and the utility model saves valve body, but directly
Spool 36 is mounted on cylinder bottom 35, i.e. the function that plays valve body of cylinder bottom 35, hydraulic fluid port A, the hydraulic fluid port B in Fig. 6 are changed with each electromagnetism
A mouth, B mouthfuls of connections to valve；The oil inlet and outlet of the C mouthfuls of rodless cavities for each oil cylinder, the disengaging of the D mouthfuls of rod chambers for each oil cylinder
The hydraulic fluid port of the rod chamber of cylinder barrel 38 is connected to by hydraulic fluid port by steel pipe 37 with D mouthfuls, and E mouthfuls are connected with the internal oil passages of hydraulic lock, F
Mouth is connect with the oil inlet and outlet of the rod chamber of each oil cylinder.Other parts are same as Example 1.
Hydraulic lock in text refers to the first hydraulic lock 24, the second hydraulic lock 25, third hydraulic lock 26, the 4th hydraulic lock 27,
Five hydraulic locks 28 and the 6th hydraulic lock 3.
The working principle of the utility model are as follows:
When chassis works independently, i.e., when engine provides power, by pressure-gradient control valve 8, oil liquid a part passes through chassis pump 9
CF mouthfuls are arrived steering hydraulic system, realize articulation steering；Another part is supplied to chassis hydraulic system of working by EF mouthfuls,
EF mouthfuls when chassis hydraulic system of working does not work, the end a no power of the second off-load solenoid valve 18, EF mouthfuls of oil liquid are directly over
13 oil return of oil return filter core, when starting to operate support oil cylinder, such as the first solenoid directional control valve 30 (or the second solenoid directional control valve 31, the
Five solenoid directional control valves 34, the 6th solenoid directional control valve 2) a mouth when being initially powered up, pass through linkage control, the second off-load solenoid valve 18
The end a be powered, at this time EF mouthful of oil liquid just pass through second one-way valve 17 reach the first solenoid directional control valve 30 B mouth, oil liquid process
It is (or preceding to reach the right oil cylinder of front leg strut 10 for first hydraulic lock 24 (or second hydraulic lock 25, the 5th hydraulic lock 28, the 6th hydraulic lock 3)
The left oil cylinder 21 of supporting leg, the right oil cylinder 12 of rear support leg, the left oil cylinder 23 of rear support leg) rodless cavity, chassis support leg begins to ramp up.When the first electricity
When the b mouth of magnetic reversal valve 30 is initially powered up, by linkage control, the end a of the second off-load solenoid valve 18 is powered, at this time EF mouthfuls of oil
Liquid reaches the A mouth of the first solenoid directional control valve 30 by second one-way valve 17, and oil liquid reaches the front leg strut right side by the first hydraulic lock 24
The rod chamber of oil cylinder 10 realizes the decline of chassis support leg.
Hoist motor 16 uses the Median Function of J-type solenoid directional control valve 1 for oil return, and hoist motor 16 is in obstructed oil Shi Nengshi
The fine rotation of existing cable；When operating J-type solenoid directional control valve 1, by linkage control, the end a of the second off-load solenoid valve 18 is logical
Electricity, pumps 9 coming oils from chassis, reaches J-type solenoid directional control valve 1 by second one-way valve 17, using throttle valve 14, completes to flow
Control, when hypertonia by bidirectional relief valve 15 carry out off-load, realize the protection to cable.
When chassis does not work, i.e., after engine misses, chassis pump 9 does not work, and working barrel 5 driven by the motor, is given
Chassis hydraulic system of working provides oil liquid, when not operating the first solenoid directional control valve 30 (or the second solenoid directional control valve 31, the 5th electromagnetism
Reversal valve 34, the 6th solenoid directional control valve 2) when, working barrel 5 is to carry out off-load by the first off-load solenoid valve 6, in the first overflow
Under the action of valve 7, guarantee system pressure is 20.7MPa, when a mouth for operating the first solenoid directional control valve 30 is powered, is linked
Control, the first off-load solenoid valve 6 is also powered, and oil liquid arrives the P mouth of chassis hydraulic system of working by the first check valve 4, by the
Oil liquid is input to the right oil cylinder of front leg strut 10 (or the left oil cylinder 21 of front leg strut, the right oil cylinder of rear support leg by the B mouth of one solenoid directional control valve 30
12, the left oil cylinder 23 of rear support leg) rodless cavity, complete the rising of supporting leg, chassis rises.When the b mouth of the first solenoid directional control valve 30
When being initially powered up, by linkage control, the end a of the first off-load solenoid valve 6 is powered, and oil liquid is reached by the first check valve 4 at this time
The A mouth of first solenoid directional control valve 30, oil liquid reach the rod chamber of the right oil cylinder 10 of front leg strut using the first hydraulic lock 24, realize
The decline of chassis support leg.When the end a of J-type solenoid directional control valve 1 is initially powered up, linkage control is carried out, the first off-load solenoid valve 6
A mouthfuls are also initially powered up, and oil liquid exports from the B mouth of J-type solenoid directional control valve 1 and reaches two-way overflow after the throttle grverning of throttle valve 14
Valve 15 is flowed, then arrives the end B of hoist motor 16, realizes rotating clockwise for hoist motor 16, starts cable rolling, when J-type electromagnetism changes
When being initially powered up to the end b of valve 1, linkage control is carried out, a mouth of the first off-load solenoid valve 6 is also initially powered up, and oil liquid is electric from J-type
The A mouth of magnetic reversal valve 1 exports and reaches bidirectional relief valve 15 after the throttle grverning of throttle valve 14, then arrives the A of hoist motor 16
End realizes rotating counterclockwise for hoist motor 16, starts loose cable.
Claims (7)
1. a kind of hydraulic system of chassis, including chassis hydraulic system of working, steering hydraulic system, working barrel (5) and chassis pump
(9), working barrel (5) is connect with chassis hydraulic system of working, and chassis pump (9) is connect with steering hydraulic system, it is characterised in that: institute
It states chassis pump (9) to connect by pressure-gradient control valve (8) and second one-way valve (17) with chassis hydraulic system of working, the chassis working solution
Pressure system includes hoisting system, supporting leg jacking system and swing arm telescopic system, and the hoisting system includes hoist motor (16), double
To overflow valve (15), throttle valve (14) and J-type solenoid directional control valve (1), the throttle valve (14) respectively with hoist motor (16), double
It is connected to overflow valve (15) and J-type solenoid directional control valve (1), hoist motor (16) is also connect with bidirectional relief valve (15).
2. hydraulic system of chassis according to claim 1, it is characterised in that: the supporting leg jacking system includes front leg strut system
System and rear support leg system, the front leg strut system includes the right oil cylinder of front leg strut (10), the first hydraulic lock (24), the first electromagnetic switch
Valve (30), the left oil cylinder of front leg strut (21), the second hydraulic lock (25) and the second solenoid directional control valve (31), first hydraulic lock (24)
Connect respectively with the right oil cylinder of front leg strut (10) and the first solenoid directional control valve (30), the second hydraulic lock (25) respectively with the left oil of front leg strut
Cylinder (21) and the second solenoid directional control valve (31) connection；The rear support leg system includes the right oil cylinder of rear support leg (12), the 5th hydraulic lock
(28), the 5th solenoid directional control valve (34), the left oil cylinder of rear support leg (23), the 6th hydraulic lock (3) and the 6th solenoid directional control valve (2), institute
It states the 5th hydraulic lock (28) to connect with the right oil cylinder of rear support leg (12) and the 5th solenoid directional control valve (34) respectively, the 6th hydraulic lock (3)
It is connect respectively with the left oil cylinder of rear support leg (23) and the 6th solenoid directional control valve (2).
3. hydraulic system of chassis according to claim 2, it is characterised in that: the swing arm telescopic system includes that front right is flexible
Oil cylinder (11), third hydraulic lock (26), third solenoid directional control valve (32), front left telescopic oil cylinder (22), the 4th hydraulic lock (27) and
4th solenoid directional control valve (33), the third hydraulic lock (26) respectively with front right telescopic oil cylinder (11) and third solenoid directional control valve
(32) it connects；4th hydraulic lock (27) connect with front left telescopic oil cylinder (22) and the 4th solenoid directional control valve (33) respectively.
4. hydraulic system of chassis according to claim 3, it is characterised in that: the steering hydraulic system includes diverter
(19) it is connect with steering cylinder (20), the diverter (19) with steering cylinder (20), the chassis pump (9) also passes through pressure-gradient control valve
(8) it is connect with diverter (19).
5. hydraulic system of chassis according to claim 4, it is characterised in that: first solenoid directional control valve (30), second
Solenoid directional control valve (31), third solenoid directional control valve (32), the 4th solenoid directional control valve (33), the 5th solenoid directional control valve (34), the 6th
Solenoid directional control valve (2) and J-type solenoid directional control valve (1) are connect by the first check valve (4) with working barrel (5) after being connected in parallel；The
The oil inlet of one off-load solenoid valve (6) and the oil inlet of the first overflow valve (7) are connect after being connected in parallel with working barrel (5), and first
The oil return opening of off-load solenoid valve (6) and the oil return opening of the first overflow valve (7) are connect after being connected in parallel with oil return filter core (13)；The
The oil inlet of two off-load solenoid valves (18) and the oil inlet of the second overflow valve (29) are connect after being connected in parallel with pressure-gradient control valve (8), the
The oil return opening of two off-load solenoid valves (18) and the oil return opening of the second overflow valve (29) are connect after being connected in parallel with oil return filter core (13).
6. hydraulic system of chassis according to claim 5, it is characterised in that: first hydraulic lock (24) is integrated in preceding branch
On the right oil cylinder of leg (10), the second hydraulic lock (25) is integrated on the left oil cylinder of front leg strut (21), before third hydraulic lock (26) is integrated in
On right telescopic oil cylinder (11), the 4th hydraulic lock (27) is integrated on front left telescopic oil cylinder (22), and the 5th hydraulic lock (28) is integrated in
On the right oil cylinder of rear support leg (12), the 6th hydraulic lock (3) is integrated on the left oil cylinder of rear support leg (23).
7. hydraulic system of chassis according to claim 6, it is characterised in that: first solenoid directional control valve (30), second
Solenoid directional control valve (31), third solenoid directional control valve (32), the 4th solenoid directional control valve (33), the 5th solenoid directional control valve (34) and the 6th
Solenoid directional control valve (2) is E type solenoid directional control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821367966.9U CN208764008U (en) | 2018-08-23 | 2018-08-23 | Hydraulic system of chassis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821367966.9U CN208764008U (en) | 2018-08-23 | 2018-08-23 | Hydraulic system of chassis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208764008U true CN208764008U (en) | 2019-04-19 |
Family
ID=66133491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821367966.9U Expired - Fee Related CN208764008U (en) | 2018-08-23 | 2018-08-23 | Hydraulic system of chassis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208764008U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110685967A (en) * | 2019-09-20 | 2020-01-14 | 农业农村部南京农业机械化研究所 | Full hydraulic drive high-speed transplanter chassis |
-
2018
- 2018-08-23 CN CN201821367966.9U patent/CN208764008U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110685967A (en) * | 2019-09-20 | 2020-01-14 | 农业农村部南京农业机械化研究所 | Full hydraulic drive high-speed transplanter chassis |
| CN110685967B (en) * | 2019-09-20 | 2021-01-29 | 农业农村部南京农业机械化研究所 | Full hydraulic drive high-speed transplanter chassis |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190419 |