CN209704951U - A kind of road roller open type vibratory hydraulic system - Google Patents
A kind of road roller open type vibratory hydraulic system Download PDFInfo
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- CN209704951U CN209704951U CN201920234329.2U CN201920234329U CN209704951U CN 209704951 U CN209704951 U CN 209704951U CN 201920234329 U CN201920234329 U CN 201920234329U CN 209704951 U CN209704951 U CN 209704951U
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Abstract
The utility model relates to road roller technical fields, and in particular to a kind of road roller open type vibratory hydraulic system, including fuel tank, gear pump, superposing type hydraulic valve and vibrating motor；The superposing type hydraulic valve includes solenoid directional control valve, hydraulic directional valve；The solenoid directional control valve and hydraulic directional valve are three position four-way directional control valve；The gear pump is connected to hydraulic directional valve oil inlet, and the oil return opening of the hydraulic directional valve is connected to fuel tank, and two working holes of the hydraulic directional valve are connected to vibrating motor；Two spring cavitys of the hydraulic directional valve are connected to the working hole of solenoid directional control valve；The oil inlet of the solenoid directional control valve is connected to the oil return line that back pressure is equipped in the feed circuit in vibration hydraulic system or steering hydraulic system.By being equipped with the oil return line of back pressure in the feed circuit that the oil inlet of solenoid directional control valve is connected in vibration hydraulic system or steering hydraulic system, solenoid directional control valve commutation, good economy performance are controlled without additionally individually increasing other oil sources.
Description
Technical field
The utility model relates to road roller technical fields, and in particular to a kind of road roller open type vibratory hydraulic system.
Background technique
The self-propelled roller of existing middle large-tonnage is generally by vibration hydraulic system, vibratory hydraulic system and steering hydraulic system
System composition.Usually there are two types of ways of realization for vibratory hydraulic system: open type vibration hydraulic system and enclosed vibratory hydraulic system.Enclosed
Vibratory hydraulic system is made of plunger pump, piston motor etc., high-efficient, high using pressure but at high cost, to oil product requirement
It is high.Open type vibration hydraulic system is made of gear pump, gear motor, vibrating valve etc., due at low cost, is required oil product low excellent
Gesture is widely used, and still, open type vibration hydraulic system is limited to low-lift pump and low voltage motor.In, in large-tonnage road roller,
Such as 12-22 tonnage, it needs using large discharge pump and motor, flow system flow is bigger, therefore needs to use on control valve
Electro-hydraulic reversing valve controls, while the breath vibration time of open system is long, and it is poor to experience.Such as application No. is: 201220196194.3, name
Referred to as: use solenoid valve control disclosed in the Chinese utility model patent of " road roller open type vibration control system ", and some sides
Case is using manually controlling, and by controlling, flow is small, is only used for middle-size and small-size road roller.Such as application No. is: 201510188868.3, name
Referred to as: the Chinese invention patent of " a kind of the double spool vibrating valve and its road roller of quick breath vibration " is disclosed using in internal control
The electrichydraulic control of row can be used for big flow, but row requires height to oil product cleannes in internal control, while needing to lead when valve does not work
Oil circuit maintain one await orders pressure control, although need to pressure it is not high, since flow system flow is big, cause road roller not
Many power wastages, cause system heat generation when vibration.
Utility model content
In order to overcome the defects of the prior art described above, the technical problem to be solved by the utility model is to provide a kind of breaths
The vibration time is short, road roller open type vibratory hydraulic system low in energy consumption, high reliablity when not working.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model are as follows: a kind of road roller open type vibration is provided
Hydrodynamic pressure system, including fuel tank, gear pump, superposing type hydraulic valve and vibrating motor；
The superposing type hydraulic valve includes solenoid directional control valve, hydraulic directional valve；The solenoid directional control valve and hydraulic directional valve
For three position four-way directional control valve；
The gear pump is connected to hydraulic directional valve oil inlet, and the oil return opening of the hydraulic directional valve is connected to fuel tank, institute
Two working holes for stating hydraulic directional valve are connected to vibrating motor；Two spring cavitys and solenoid directional control valve of the hydraulic directional valve
Working hole connection；The oil inlet of the solenoid directional control valve is connected to feed circuit or steering hydraulic system in vibration hydraulic system
The oil return line of back pressure is equipped in system；The oil return opening of the solenoid directional control valve is connected to fuel tank.
Further, above-mentioned road roller open type vibratory hydraulic system, the superposing type hydraulic valve further include the first overflow
Valve and the second overflow valve；The one of the oil outlet and solenoid directional control valve of the oil inlet of first overflow valve and second overflow valve
The connection of a working hole, the oil inlet and solenoid directional control valve of the oil outlet of first overflow valve and second overflow valve it is another
A working hole connection.
Further, above-mentioned road roller open type vibratory hydraulic system, the Median Function of the hydraulic directional valve are M type,
The Median Function of the solenoid directional control valve is Y type.
Further, above-mentioned road roller open type vibratory hydraulic system, the superposing type hydraulic valve further include and surge and change
The pressure gauge being connected to valve oil inlet installs interface.
Further, above-mentioned road roller open type vibratory hydraulic system, the superposing type hydraulic valve further include third overflow
The fuel feed hole of valve, the third overflow valve is connected to gear pump, and the oil outlet of the third overflow valve is connected to fuel tank.
The utility model has the beneficial effects that: by the way that the oil inlet of solenoid directional control valve is connected in vibration hydraulic system
Feed circuit or steering hydraulic system in be equipped with back pressure oil return line, by two spring cavitys and electromagnetic switch of hydraulic directional valve
The working hole of valve is connected to；Therefore, solenoid directional control valve and hydraulic directional valve are combined into the electro-hydraulic reversing valve of external control outlet, by external control
The electro-hydraulic reversing valve control vibrating motor work of outlet, external control refer to that the pressure oil of control solenoid directional control valve commutation is not from
The inside of vibratory hydraulic system, outlet refers to that the oil return opening of solenoid directional control valve is directly connected to fuel tank, compared to what is arranged in internal control
The electro-hydraulic reversing valve control of electro-hydraulic reversing valve control, external control outlet is independent control, is separated with the working connection of vibratory hydraulic system,
High reliablity, when vibrating motor does not work, working connection maintains pressure to control without standby, so as to avoid pressure
Power wastage and system heat generation when road machine does not vibrate；
Pass through feed circuit or the steering hydraulic system oil inlet of solenoid directional control valve being connected in vibration hydraulic system
In be equipped with back pressure oil return line, it is therefore not necessary to additionally individually increase other oil sources control solenoid directional control valve commutation, that is,
It says, the oil return line in the feed circuit or steering hydraulic system in vibration hydraulic system equipped with back pressure is all ready-made in road roller
, good economy performance.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the road roller open type vibratory hydraulic system of specific embodiment of the present utility model；
Fig. 2 is that the solenoid directional control valve that specific embodiment of the present utility model is road roller open type vibratory hydraulic system mentions
For the structural schematic diagram of the vibration hydraulic system of external control pressure oil；
Fig. 3 is that the solenoid directional control valve that specific embodiment of the present utility model is road roller open type vibratory hydraulic system mentions
For the structural schematic diagram of the steering hydraulic system of external control pressure oil；
Label declaration: 1, gear pump；2, solenoid directional control valve；3, hydraulic directional valve；4, vibrating motor；5, the first overflow valve；
6, the second overflow valve；7, third overflow valve；8, traveling pump；9, slippage pump；10, preceding steel wheel running motor；11, rear-wheel walking horse
It reaches；12, oil filter；13, check valve；14, diverter；15, steering cylinder.
Specific embodiment
For technology contents, the objects and the effects that the utility model is described in detail, below in conjunction with embodiment and match
Attached drawing is closed to be explained.
The design of the utility model most critical is: the oil inlet of solenoid directional control valve is connected to the benefit in vibration hydraulic system
It is equipped with the oil return line of back pressure in oil return line or steering hydraulic system, controls electromagnetic switch without additionally individually increasing other oil sources
Valve commutation, good economy performance.
It please referring to shown in Fig. 1 to Fig. 3, the utility model provides a kind of road roller open type vibratory hydraulic system, including fuel tank,
Gear pump 1, superposing type hydraulic valve and vibrating motor 4；
The superposing type hydraulic valve includes solenoid directional control valve 2, hydraulic directional valve 3；The solenoid directional control valve 2 and commutation of surging
Valve 3 is three position four-way directional control valve；
The gear pump 1 is connected to 3 oil inlet of hydraulic directional valve, and the oil return opening of the hydraulic directional valve 3 is connected to fuel tank,
Two working holes of the hydraulic directional valve 3 are connected to vibrating motor 4；Two spring cavitys and electromagnetism of the hydraulic directional valve 3
The working hole of reversal valve 2 is connected to；The feed circuit or turn that the oil inlet of the solenoid directional control valve 2 is connected in vibration hydraulic system
The oil return line of back pressure is equipped with into hydraulic system；The oil return opening of the solenoid directional control valve 2 is connected to fuel tank.
The advantages of above-mentioned road roller open type vibratory hydraulic system, is as follows: by the way that the oil inlet of solenoid directional control valve to be connected to
The oil return line of back pressure is equipped in feed circuit or steering hydraulic system in vibration hydraulic system, by two bullets of hydraulic directional valve
Spring chamber is connected to the working hole of solenoid directional control valve；Therefore, solenoid directional control valve and hydraulic directional valve are combined into the electricity of external control outlet
Liquid reversal valve, by the electro-hydraulic reversing valve control vibrating motor work of external control outlet, external control refers to control solenoid directional control valve commutation
Pressure oil be not from the inside of vibratory hydraulic system, outlet refers to that the oil return opening of solenoid directional control valve directly connects with fuel tank
Logical, compared to the electro-hydraulic reversing valve control arranged in internal control, the electro-hydraulic reversing valve control of external control outlet is independent control, with vibrating hydraulic
The working connection of system separates, and high reliablity avoids power wastage and system heat generation when road roller does not vibrate；
Pass through feed circuit or the steering hydraulic system oil inlet of solenoid directional control valve being connected in vibration hydraulic system
In be equipped with back pressure oil return line, it is therefore not necessary to additionally individually increase other oil sources control solenoid directional control valve commutation, that is,
It says, the oil return line in the feed circuit or steering hydraulic system in vibration hydraulic system equipped with back pressure is all ready-made in road roller
, good economy performance.
Further, above-mentioned road roller open type vibratory hydraulic system, the superposing type hydraulic valve further include the first overflow
Valve 5 and the second overflow valve 6；The oil outlet and solenoid directional control valve of the oil inlet of first overflow valve 5 and second overflow valve 6
2 working hole connection, the oil inlet and electromagnetic switch of the oil outlet of first overflow valve 5 and second overflow valve 6
Another working hole of valve 2 is connected to.
As can be seen from the above description, by be arranged between the working hole and vibrating motor of solenoid directional control valve the first overflow valve and
Second overflow valve can overcome the inertia force of vibrating motor by the back pressure of the first overflow valve and the second overflow valve output, make to vibrate
Motor quickly stops operating, to greatly shorten the breath vibration time, while by adjusting overflowing for the first overflow valve and the second overflow valve
Flowing pressure reaches the control breath vibration time, improves driving experience.
Further, above-mentioned road roller open type vibratory hydraulic system, the Median Function of the hydraulic directional valve 3 are M type,
The Median Function of the solenoid directional control valve 2 is Y type.
As can be seen from the above description, not worked by setting M type for the Median Function of hydraulic directional valve in vibrating motor
When, gear pump can be small by position off-load, power loss in spool.
Further, above-mentioned road roller open type vibratory hydraulic system, the superposing type hydraulic valve further include and surge and change
The pressure gauge being connected to 3 oil inlet of valve installs interface.
As can be seen from the above description, by the way that the pressure gauge being connected to hydraulic directional valve oil inlet is arranged on superposing type hydraulic valve
Interface is installed, can carry out detection system pressure by installing pressure gauge, keep system safer.
Further, above-mentioned road roller open type vibratory hydraulic system, the superposing type hydraulic valve further include third overflow
The fuel feed hole of valve 7, the third overflow valve 7 is connected to gear pump 1, and the oil outlet of the third overflow valve 7 is connected to fuel tank.
As can be seen from the above description, making vibratory hydraulic system have overload protection by setting third overflow valve, avoiding vibrating
Hydraulic system damages equipment because of hypertonia and causes personal injury.
In Fig. 1, X is the oil inlet of solenoid directional control valve 2, and Y is the oil return opening of solenoid directional control valve 2；A and B is commutation of surging
The working hole of valve 3；P is the oil inlet of hydraulic directional valve 3；T is the oil return opening of hydraulic directional valve 3；MP is that pressure gauge installs interface.
In Fig. 2, vibration hydraulic system includes traveling pump 8, preceding steel wheel running motor 10, rear-wheel running motor 11 and oil strain
Device 12；Wherein traveling pump 8 includes slippage pump 9；Vibration hydraulic system is closed circuit, wherein have feed circuit, oil compensation pressure
The external control pressure oil as solenoid directional control valve 2 is fit into, wherein the K1 mouth in feed circuit can be with the X mouth of solenoid directional control valve 2
It is connected to the external control pressure oil as solenoid directional control valve 2.
In Fig. 3, steering hydraulic system includes diverter 14, steering cylinder 15, check valve 13；In steering hydraulic system
Check valve 13 is set on oil return line, generates back pressure, wherein the K2 mouth on oil return line can also be connected to the X of solenoid directional control valve 2 mouth, be made
For the external control pressure oil of solenoid directional control valve 2.
Embodiment one
A kind of road roller open type vibratory hydraulic system, including fuel tank, gear pump 1, superposing type hydraulic valve and vibrating motor 4；
The superposing type hydraulic valve includes solenoid directional control valve 2, hydraulic directional valve 3；The solenoid directional control valve 2 and hydraulic directional valve 3 are three
Position and four-way reversing valve；
The gear pump 1 is connected to 3 oil inlet of hydraulic directional valve, and the oil return opening of the hydraulic directional valve 3 is connected to fuel tank,
Two working holes of the hydraulic directional valve 3 are connected to vibrating motor 4；Two spring cavitys and electromagnetism of the hydraulic directional valve 3
The working hole of reversal valve 2 is connected to；The feed circuit or turn that the oil inlet of the solenoid directional control valve 2 is connected in vibration hydraulic system
The oil return line of back pressure is equipped with into hydraulic system；The oil return opening of the solenoid directional control valve 2 is connected to fuel tank.
Further, the superposing type hydraulic valve further includes the first overflow valve 5 and the second overflow valve 6；First overflow
The oil outlet of the oil inlet of valve 5 and second overflow valve 6 is connected to a working hole of solenoid directional control valve 2, and described first overflows
The oil outlet and the oil inlet of second overflow valve 6 and another working hole of solenoid directional control valve 2 of stream valve 5 are connected to；The liquid
The Median Function of dynamic reversal valve 3 is M type, and the Median Function of the solenoid directional control valve 2 is Y type；The superposing type hydraulic valve also wraps
Include the pressure gauge installation interface being connected to 3 oil inlet of hydraulic directional valve；The superposing type hydraulic valve further includes third overflow valve 7,
The fuel feed hole of the third overflow valve 7 is connected to gear pump 1, and the oil outlet of the third overflow valve 7 is connected to fuel tank.
The course of work of the present embodiment: when the big vibration of road roller, 2 left position of solenoid directional control valve obtains electric, 2 left position work of solenoid directional control valve
To make, external control pressure oil overcomes spring force subsequently into the spring cavity of hydraulic directional valve 3 by 2 left position of solenoid directional control valve from X mouthfuls,
Main valve plug is pushed, makes the work of hydraulic directional valve 3 in left position.Then, gear pump 1 and the pressure oil that goes out surges commutation from P mouthful processes
3 left position of valve finally enters motor, pushes motor operations, road roller starting of oscillation.
When the small vibration of road roller, the right position of solenoid directional control valve 2 obtains electric, and the work of the right position of solenoid directional control valve 2, external control pressure oil is from X mouthfuls
Spring force is overcome subsequently into the spring cavity of hydraulic directional valve 3 by the right position of solenoid directional control valve 2, is pushed main valve plug, is made to surge
Reversal valve 3 works in right position.Then, pass through the right position of hydraulic directional valve 3 from the pressure oil that gear pump 1 goes out from P mouthfuls, finally enter
Motor pushes motor reverse operation, road roller starting of oscillation.
When road roller breath vibration, 2 power loss of solenoid directional control valve, solenoid directional control valve 2 works under return spring effect in middle position, X
Atretostomia.Then, position oil return box in the Y type that the external control pressure oil in the spring cavity of hydraulic directional valve 3 passes through solenoid directional control valve 2,
Hydraulic directional valve 3 under the action of the return spring, works in middle position, the vibrating motor 4 that runs at high speed in the first pressurized overflow valve and
It is stalled rapidly under the action of second overflow valve 6, road roller failure of oscillation.
In conclusion the advantages of above-mentioned road roller open type vibratory hydraulic system, is as follows: one, by by solenoid directional control valve
Oil inlet be connected in the feed circuit in vibration hydraulic system or steering hydraulic system be equipped with back pressure oil return line, will surge
Two spring cavitys of reversal valve are connected to the working hole of solenoid directional control valve；Therefore, solenoid directional control valve and hydraulic directional valve are combined into
For the electro-hydraulic reversing valve of external control outlet, by the electro-hydraulic reversing valve control vibrating motor work of external control outlet, external control refers to controlling
The pressure oil of solenoid directional control valve commutation is not from the inside of vibratory hydraulic system, and outlet refers to the oil return opening of solenoid directional control valve
It is directly connected to fuel tank, compared to the electro-hydraulic reversing valve control arranged in internal control, the electro-hydraulic reversing valve control of external control outlet is independent control
System, separates, high reliablity with the working connection of vibratory hydraulic system, avoids power wastage and system hair when road roller does not vibrate
Heat；
Pass through feed circuit or the steering hydraulic system oil inlet of solenoid directional control valve being connected in vibration hydraulic system
In be equipped with back pressure oil return line, it is therefore not necessary to additionally individually increase other oil sources control solenoid directional control valve commutation, that is,
It says, the oil return line in the feed circuit or steering hydraulic system in vibration hydraulic system equipped with back pressure is all ready-made in road roller
, good economy performance；
Secondly, by the way that the first overflow valve and the second overflow are arranged between the working hole and vibrating motor of solenoid directional control valve
Valve can overcome the inertia force of vibrating motor by the back pressure of the first overflow valve and the second overflow valve output, keep vibrating motor quick
It stops operating, to greatly shorten the breath vibration time, while the oil pressure relief by adjusting the first overflow valve and the second overflow valve, reaches
The vibration time is ceased to control, improves driving experience；
Thirdly, by setting M type for the Median Function of hydraulic directional valve, when vibrating motor does not work, gear pump can
It is small by position off-load, power loss in spool.
The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
Equivalents made based on the specification and figures of the utility model are applied directly or indirectly in relevant technology neck
Domain is also included in the patent protection scope of the utility model.
Claims (5)
1. a kind of road roller open type vibratory hydraulic system, which is characterized in that including fuel tank, gear pump, superposing type hydraulic valve and vibration
Dynamic motor；The superposing type hydraulic valve includes solenoid directional control valve, hydraulic directional valve；The solenoid directional control valve and hydraulic directional valve are
Three position four-way directional control valve；
The gear pump is connected to hydraulic directional valve oil inlet, and the oil return opening of the hydraulic directional valve is connected to fuel tank, the liquid
Two working holes of dynamic reversal valve are connected to vibrating motor；The work of two spring cavitys and solenoid directional control valve of the hydraulic directional valve
Make mouth connection；The oil inlet of the solenoid directional control valve is connected in the feed circuit in vibration hydraulic system or steering hydraulic system
Oil return line equipped with back pressure；The oil return opening of the solenoid directional control valve is connected to fuel tank.
2. road roller open type vibratory hydraulic system according to claim 1, which is characterized in that the superposing type hydraulic valve is also
Including the first overflow valve and the second overflow valve；The oil outlet of the oil inlet of first overflow valve and second overflow valve and electricity
One working hole of magnetic reversal valve is connected to, the oil inlet and electromagnetism of the oil outlet of first overflow valve and second overflow valve
Another working hole of reversal valve is connected to.
3. road roller open type vibratory hydraulic system according to claim 1, which is characterized in that in the hydraulic directional valve
Median function is M type, and the Median Function of the solenoid directional control valve is Y type.
4. road roller open type vibratory hydraulic system according to claim 1, which is characterized in that the superposing type hydraulic valve is also
Pressure gauge including being connected to hydraulic directional valve oil inlet installs interface.
5. road roller open type vibratory hydraulic system according to claim 1, which is characterized in that the superposing type hydraulic valve is also
Including third overflow valve, the fuel feed hole of the third overflow valve is connected to gear pump, the oil outlet and oil of the third overflow valve
Case connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920234329.2U CN209704951U (en) | 2019-02-25 | 2019-02-25 | A kind of road roller open type vibratory hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920234329.2U CN209704951U (en) | 2019-02-25 | 2019-02-25 | A kind of road roller open type vibratory hydraulic system |
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| Publication Number | Publication Date |
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| CN209704951U true CN209704951U (en) | 2019-11-29 |
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ID=68643930
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| CN201920234329.2U Active CN209704951U (en) | 2019-02-25 | 2019-02-25 | A kind of road roller open type vibratory hydraulic system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113442722A (en) * | 2021-08-02 | 2021-09-28 | 河北英虎农业机械股份有限公司 | Hydraulic driving method of corn harvester |
-
2019
- 2019-02-25 CN CN201920234329.2U patent/CN209704951U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113442722A (en) * | 2021-08-02 | 2021-09-28 | 河北英虎农业机械股份有限公司 | Hydraulic driving method of corn harvester |
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