CN207131651U - The hydraulic control system and sanitation equipment of sanitation equipment - Google Patents
The hydraulic control system and sanitation equipment of sanitation equipment Download PDFInfo
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- CN207131651U CN207131651U CN201720650896.7U CN201720650896U CN207131651U CN 207131651 U CN207131651 U CN 207131651U CN 201720650896 U CN201720650896 U CN 201720650896U CN 207131651 U CN207131651 U CN 207131651U
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Abstract
The utility model discloses a kind of hydraulic control system of sanitation equipment and sanitation equipment.Hydraulic control system includes hydraulic pump, control valve group and the hydraulic cylinder for driving the cleaning unit of sanitation equipment to lift.Cleaning unit has decline state, propradation and quick condition, is declining state, control valve group control oil inlet connects with the first actuator port；In propradation, control valve group control oil inlet connects with the second actuator port；In quick condition, control valve group control oil inlet connects with the second actuator port and the oil liquid pressure of the second actuator port is adjusted in the Volume Changes of the second working chamber to pressure set points, when the oil liquid pressure of the second actuator port is pressure set points, the active force that hydraulic cylinder applies to cleaning unit is equal to difference of the gravity of cleaning unit with ground in face of the support force of cleaning unit.Sanitation equipment of the present utility model reduces the rate of wear of cleaning unit and can inhale ten bulky grain things and obstacle detouring.
Description
Technical field
It the utility model is related to technical field of engineering machinery, the hydraulic control system and ring of more particularly to a kind of sanitation equipment
Defend equipment.
Background technology
China's urban road cleans at present carries out do mechanization operation as extensive, nearly ten years, road-cleaning vehicle and
Assembling develops to integrated, environmental protection, hommization direction, from single operation function to integrated intelligent function development.
But existing road cleans the cleaning of vehicle, sucking machine structure generally come the decline of executing agency and is shown dynamic using hydraulic cylinder or cylinder
Make and barrier avoiding function is realized to the drawing of mechanism by spring, it is difficult to realize that self-balancing works.And due to aforesaid way
Spring is changeless, and its pulling force can not also adjust, can not effective raising when cleaning, sucking machine structure run into larger rubbish
Suction is picked up, cleans or crossed.Meanwhile the gravity of existing cleaning agency and the support force on ground, it is two-way to be applied in brush, work as adjustment
When not in place, brush can be caused to be increased with ground contact force, increase the rate of wear of brush.
Utility model content
The purpose of this utility model is the hydraulic control system and sanitation equipment for providing a kind of sanitation equipment, so that environmental sanitation
The cleaning unit of equipment realizes that self-balancing works.
The utility model first aspect provides a kind of hydraulic control system of sanitation equipment, and the hydraulic control system includes
Hydraulic pump, control valve group and the hydraulic cylinder for driving the cleaning unit of the sanitation equipment to lift, the hydraulic cylinder have the
One working chamber and the second working chamber, the cleaning unit is driven during the first working chamber oil-feed to decline, second working chamber
Drive the cleaning unit to rise during oil-feed, the control valve group have oil inlet, the first actuator port, the second actuator port and
Oil discharge outlet, the oil inlet connect with the oil-out of the hydraulic pump, and first actuator port connects with first working chamber
Logical, second actuator port connects with second working chamber, and the cleaning unit has decline state, propradation and floated
Dynamic state, in the decline state, the control valve group controls the oil inlet to be connected with first actuator port；Described
Propradation, the control valve group control the oil inlet to be connected with second actuator port；It is described in the quick condition
Control valve group controls the oil inlet to connect with second actuator port and adjusted in the Volume Changes of second working chamber
The oil liquid pressure of second actuator port is saved to pressure set points, when the oil liquid pressure of second actuator port is the pressure
During power setting value, active force that the hydraulic cylinder applies to the cleaning unit be equal to the gravity of the cleaning unit with face
The difference of the support force of the cleaning unit.
Further, the control valve group includes pressure regulator valve, and the pressure regulator valve is arranged at the oil inlet and described second
With in the oil liquid pressure of quick condition regulation second actuator port between actuator port.
Further, the control valve group includes reversal valve, and the reversal valve has the first hydraulic fluid port, the second hydraulic fluid port, the 3rd
Hydraulic fluid port and the 4th hydraulic fluid port, the first hydraulic fluid port of the reversal valve are connected by the pressure regulator valve with the oil inlet, the reversal valve
The second hydraulic fluid port be connected with first actuator port, the 3rd hydraulic fluid port of the reversal valve is connected with second actuator port,
4th hydraulic fluid port of the reversal valve is connected with the oil discharge outlet, and the reversal valve has the first operating position and the second working position
Put, in first operating position, the first hydraulic fluid port of the reversal valve connects with the 3rd hydraulic fluid port of the reversal valve, the commutation
Second hydraulic fluid port of valve connects with the 4th hydraulic fluid port of the reversal valve, in second operating position, the first oil of the reversal valve
Mouth connects with the second hydraulic fluid port of the reversal valve, and the 3rd hydraulic fluid port of the reversal valve connects with the 4th hydraulic fluid port of the reversal valve.
Further, the pressure regulator valve includes the first hydraulic fluid port and the second hydraulic fluid port, the first hydraulic fluid port of the pressure regulator valve with it is described
Oil inlet is connected, and the second hydraulic fluid port of the pressure regulator valve is connected with second actuator port, is in described in the cleaning unit
When decline state or the propradation, the oil liquid pressure of the second hydraulic fluid port of the pressure regulator valve is equal to the first oil of the pressure regulator valve
The oil liquid pressure of mouth；When the cleaning unit is in quick condition, the second hydraulic fluid port of pressure regulator valve described in the pressure regulation valve regulation
Oil liquid pressure to the pressure set points.
Further, the pressure regulator valve also includes first pressure end and second pressure end, and the first pressure end is pressure
Control terminal, the oil circuit between the second pressure end and second actuator port has connected state and off-state, in institute
When stating cleaning unit and being in the decline state or the propradation, the second pressure end and second actuator port it
Between oil circuit disconnect, the first hydraulic fluid port of the pressure regulator valve connects with the second hydraulic fluid port total head；Institute is in the cleaning unit
When stating quick condition, the oil communication between the second pressure end and second actuator port, the first of the pressure regulator valve
Hydraulic fluid port forms pressure isolation effect with second hydraulic fluid port, and the second hydraulic fluid port pressure is that pressure regulator valve sets pressure.
Further, the control valve group also includes on-off control valve, and the on-off control valve is arranged at the pressure regulator valve
Second pressure end and second actuator port between oil circuit on control the second pressure end of the pressure regulator valve with it is described
The break-make of oil circuit between second actuator port.
Further, the hydraulic control system of the sanitation equipment includes being used for the corresponding at least one cleaning unit of driving
At least one hydraulic cylinder and at least one control valve group being correspondingly arranged with least one hydraulic cylinder.
Further, the hydraulic control system also includes Hovering control valve, and the Hovering control valve is arranged at described
Hovered between two working chambers and second actuator port for the control cleaning unit in a certain position.
Further, the Hovering control valve has the first hydraulic fluid port and the second hydraulic fluid port, the first oil of the Hovering control valve
Mouth is connected with second actuator port, and the second hydraulic fluid port of the Hovering control valve is connected with second working chamber, described outstanding
Stopping control valve has the first operating position and the second operating position, in first operating position, fluid can uni-directionally from
First hydraulic fluid port flows to second hydraulic fluid port；In second operating position, fluid at least can be from the second hydraulic fluid port stream
To first hydraulic fluid port.
The utility model second aspect provides a kind of sanitation equipment, including as any one of the utility model first aspect provides
Sanitation equipment hydraulic control system.
Hydraulic control system and sanitation equipment based on sanitation equipment provided by the utility model, hydraulic control system include
Hydraulic pump, control valve group and the hydraulic cylinder for driving the cleaning unit of sanitation equipment to lift, hydraulic cylinder have the first working chamber
With the second working chamber, drive cleaning unit to decline during the first working chamber oil-feed, drive on cleaning unit during the second working chamber oil-feed
Rise, control valve group has oil inlet, the first actuator port, the second actuator port and an oil discharge outlet, oil inlet and hydraulic pump it is fuel-displaced
Mouth connection, the first actuator port connect with the first working chamber, and the second actuator port connects with the second working chamber, and cleaning unit has
Decline state, propradation and quick condition, declining state, control valve group control oil inlet connects with the first actuator port；
In propradation, control valve group control oil inlet connects with the second actuator port；In quick condition, control valve group control oil inlet
Connected with the second actuator port and the oil liquid pressure of the second actuator port is adjusted in the Volume Changes of the second working chamber to pressure
Setting value, when the oil liquid pressure of the second actuator port is pressure set points, active force that hydraulic cylinder applies to cleaning unit etc.
The difference of the support force of cleaning unit is faced in the gravity and ground of cleaning unit.Hydraulic control system of the present utility model is certainly flat
Weigh operation when, it is desirable to control valve group is advisable to the reaction force maximum of cleaning unit, now cleaning unit balance to ground seemingly
From not from state, balance competence exertion optimum efficiency.The rate of wear of cleaning unit is also reduced simultaneously.
It is of the present utility model other by referring to the drawings to the detailed description of exemplary embodiment of the present utility model
Feature and its advantage will be made apparent from.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding to of the present utility model, forms the part of the application,
Schematic description and description of the present utility model is used to explain the utility model, does not form to of the present utility model improper
Limit.In the accompanying drawings：
Fig. 1 is the structural representation of the hydraulic control system of the sanitation equipment of the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.The description only actually at least one exemplary embodiment is illustrative to be never used as to this practicality below
New and its application or any restrictions used.Based on the embodiment in the utility model, those of ordinary skill in the art are not having
There is the every other embodiment made and obtained under the premise of creative work, belong to the scope of the utility model protection.
Unless specifically stated otherwise, the part and positioned opposite, the digital table of step otherwise illustrated in these embodiments
Up to the unlimited the scope of the utility model processed of formula and numerical value.Simultaneously, it should be appreciated that each shown in accompanying drawing for the ease of description
The size of individual part is not to be drawn according to the proportionate relationship of reality.For skill known to person of ordinary skill in the relevant
Art, method and apparatus may be not discussed in detail, but in the appropriate case, the technology, method and apparatus should be considered as awarding
Weigh part for specification.In shown here and discussion all examples, any occurrence should be construed as merely example
Property, not as limitation.Therefore, the other examples of exemplary embodiment can have different values.It should be noted that：It is similar
Label and letter similar terms is represented in following accompanying drawing, therefore, once be defined in a certain Xiang Yi accompanying drawing, then with
It need not be further discussed in accompanying drawing afterwards.
For the ease of description, space relative terms can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be appreciated that space relative terms are intended to comprising the orientation except device described in figure
Outside different azimuth in use or operation.For example, if the device in accompanying drawing is squeezed, it is described as " in other devices
It will be positioned as " under other devices or construction after the device of part or construction top " or " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (being rotated by 90 ° or in other orientation), and
And respective explanations are made to the relative description in space used herein above.
The hydraulic control system of the sanitation equipment of the utility model embodiment includes hydraulic pump, control valve group and for driving
The hydraulic cylinder of the cleaning unit lifting of sanitation equipment.Hydraulic cylinder has the first working chamber and the second working chamber, and the first working chamber enters
Drive cleaning unit to decline when oily, drive cleaning unit to rise during the second working chamber oil-feed.Control valve group has oil inlet, first
Actuator port, the second actuator port and oil discharge outlet.Oil inlet connects with the oil-out of hydraulic pump, the first actuator port and the first work
Make chamber connection, the second actuator port connects with the second working chamber.Cleaning unit has decline state, propradation and floating type
State, declining state, control valve group control oil inlet connects with the first actuator port；In propradation, control valve group control into
Hydraulic fluid port connects with the second actuator port；In quick condition, control valve group control oil inlet connects with the second actuator port and the
The oil liquid pressure of the second actuator port is adjusted during the Volume Changes of two working chambers to pressure set points, when the oil of the second actuator port
When hydraulic coupling is pressure set points, the active force that hydraulic cylinder applies to cleaning unit is equal to the gravity of cleaning unit and ground faces clearly
Sweep the difference of the support force of unit.
The control valve group of the hydraulic control system of the sanitation equipment of the utility model embodiment is controlled before cleaning work is constructed
Oil inlet processed connects with the first actuator port so that cleaning unit is in the decline that decline state realizes cleaning unit；Make cleaning
Control oil inlet connects with the second actuator port and adjusts the oil liquid pressure of the second actuator port to pressure and sets in industry construction
Value, when the oil liquid pressure of the second actuator port is pressure set points, the active force that hydraulic cylinder applies to cleaning unit is equal to clearly
Difference of the gravity of unit with ground in face of the support force of cleaning unit is swept, because ground is single with cleaning in face of the support force of cleaning unit
The pressure of contacting to earth of member is active force and reaction force, therefore now cleaning unit can realize self-balancing.When cleaning unit has run into
When lying prostrate road surface or the barrier higher than road surface, because the reaction force increase of road surface or barrier to cleaning unit makes cleaning unit
Float, now the oil liquid pressure of the second working chamber diminishes, that is to say, that the oil liquid pressure of the second actuator port diminishes, and now controls
Valve group will carry out repairing to increase the oil liquid pressure of the second actuator port to the second actuator port.When cleaning unit passes through rough road
Face or after clearing the jumps, because road surface or barrier are recovered initial value to the reaction force of cleaning unit and made under cleaning unit
Heavy, now the pressure of the second working chamber will be greater than pressure set points, control valve group unnecessary fluid will be controlled to carry out draining so that
The oil liquid pressure of second working chamber returns to pressure set points.After cleaning work construction, control valve group control oil inlet and second
Actuator port is connected so that cleaning unit is in propradation to realize the rising of cleaning unit.
The hydraulic control system of the utility model embodiment is in self-balancing operation, it is desirable to which control valve group is to cleaning unit
Reaction force maximum is advisable, now cleaning unit balance to ground like from not from state, balance competence exertion optimum efficiency.
The rate of wear of cleaning unit is also reduced simultaneously.When the cleaning unit of the sanitation equipment of the utility model embodiment runs into fluctuating
When road surface or larger barrier, road surface or barrier increase to the reaction force of cleaning unit and cleaning unit is floated,
Therefore the sanitation equipment of the utility model embodiment has obstacle detouring and inhales the function of picking up bulky grain thing.
Need what is illustrated, pressure set points according to different cleaning units be different numerical value, it is necessary to according to sanitation equipment
The gravity of specific cleaning unit and the operating mode on road surface set.
The structure of the hydraulic control system of the sanitation equipment of the specific embodiment of the utility model one will be entered according to Fig. 1 below
Row describes in detail.
In the present embodiment, cleaning unit includes brush mechanism and sucking machine structure, therefore as shown in Fig. 1, hydraulic control system
System is included for driving the brush driving hydraulic cylinder 6 of brush mechanism lifting and the suction for driving sucking machine structure to lift to pick up driving
Hydraulic cylinder 8.The hydraulic control system of the present embodiment includes being used to control the first control valve group 3 of brush mechanism action and for controlling
Second control valve group 4 of sucking machine structure action processed.Due to the first control valve group 3 and the basic phase of structure of the second control valve group 4
Together, the concrete structure of the first control valve group 3, the effect of the structure and each structure of the second control valve group 4 will be mainly introduced below
And effect can refer to the description of the first control valve group 3.
The oil inlet of hydraulic pump 2 is connected by filter 9 and fuel tank 1, the oil-out of hydraulic pump 2 and the first control valve group 3
Think the first control valve group 3 and the fuel feeding of the second control valve group 4 with the connection of the second control valve group 4.
As shown in figure 1, the first control valve group 3 includes oil inlet P, the first actuator port A, the second actuator port B and oil extraction
Mouth T.Oil inlet P is connected with the oil-out of hydraulic pump 2.First actuator port A is connected with the rodless cavity of brush driving hydraulic cylinder 6,
Second actuator port is connected with the rod chamber of brush driving hydraulic cylinder 6.
Preferably, the first control valve group includes pressure regulator valve 33.Pressure regulator valve 33 is arranged at oil inlet P and the second actuator port B
Between with quick condition adjust the second actuator port B oil liquid pressure.
In the present embodiment, pressure regulator valve 33 is pressure-reducing valve.Pressure regulator valve includes the first hydraulic fluid port and the second hydraulic fluid port, and the of pressure regulator valve
One hydraulic fluid port is connected with oil inlet P, and the second hydraulic fluid port of pressure regulator valve is connected with the second actuator port B, is in brush mechanism and is declined shape
When state or propradation, the oil liquid pressure of the second hydraulic fluid port of pressure regulator valve is equal to the oil liquid pressure of the first hydraulic fluid port of pressure regulator valve.Also
To say, when brush mechanism is in decline state or propradation, pressure regulator valve 33 do not play its pressure regulation effect, its first hydraulic fluid port and
All-pass state is between second hydraulic fluid port.And when cleaning unit is in quick condition, the first hydraulic fluid port of pressure regulator valve and the second oil
Mouth forms pressure isolation effect, and the second hydraulic fluid port pressure is the setting pressure of pressure regulator valve.
Specifically in the present embodiment, pressure regulator valve 33 is pressure-reducing valve, and it will be by restricting element or valve opening come to second
The oil liquid pressure of hydraulic fluid port is adjusted such that it is reduced to pressure set points.
Specifically, as shown in figure 1, pressure regulator valve includes first pressure end and second pressure end, pressure regulator valve is in its pressure regulation state
When by comparing the pressure value at second pressure end and first pressure end come the aperture of control valve.First pressure end is Stress control
End.Specific is spring control terminal in the present embodiment, naturally it is also possible to, can be by adjusting the pre- of spring for control terminals such as electromagnetism
Decrement adjusts the pressure of spring control terminal.Oil circuit between second pressure end and the second actuator port have connected state and
Off-state, when brush mechanism is in decline state or propradation, the oil between second pressure end and the second actuator port
Road disconnects, and the first hydraulic fluid port of pressure regulator valve connects with the second hydraulic fluid port total head.When brush mechanism is in quick condition, second pressure end
With the oil communication between the second actuator port, the first hydraulic fluid port of pressure regulator valve connects with the throttling of the second hydraulic fluid port.At brush mechanism
When down or up state, now pressure regulator valve can be controlled between second pressure end and the second actuator port without pressure regulation
Oil circuit disconnects, and the first hydraulic fluid port of pressure regulator valve will not play voltage regulation function with the second hydraulic fluid port standard-sized sheet.Floating type is in brush mechanism
During state, now pressure regulator valve needs to play voltage regulation function, therefore controls the oil circuit between second pressure end and the second actuator port to connect
It is logical, now pressure regulator valve by the pressure of the oil liquid pressure for comparing the second actuator port and spring control terminal to control the aperture of valve port to enter
Row decompression.
In order to control the break-make of the fluid between second pressure end and the second actuator port, as shown in Fig. 1, the present embodiment
Control valve group also include on-off control valve 32, on-off control valve 32 is arranged at second pressure end and the second working oil of pressure regulator valve
To control the break-make of oil circuit between the second pressure end of pressure regulator valve and the second actuator port on oil circuit between mouthful.
On-off control valve 32 has the first operating position and the second operating position.(the figure when it is in the first operating position
Shown in it is upper), now, the fluid of the second actuator port can not be passed to the second pressure end of pressure regulator valve 33, and pressure regulator valve is not
Play voltage regulation function.When it is in the second operating position (bottom shown in figure), now, the fluid stream of the second actuator port
To the second pressure end of pressure regulator valve 33 and compared with the pressure of the spring control terminal of pressure regulator valve 33 to play voltage regulation function.This
The hydraulic control system of embodiment on the oil circuit between the second actuator port and the second pressure end of pressure regulator valve 33 by setting
On-off control valve 32 is so that pressure regulator valve 33 is started or disconnected to its voltage regulation function under the different conditions of brush mechanism, control
Mode processed is simple and convenient.
As shown in figure 1, the first control valve group includes reversal valve 31.Reversal valve 31 has the first hydraulic fluid port, the second hydraulic fluid port, the 3rd
Hydraulic fluid port and the 4th hydraulic fluid port.First hydraulic fluid port of reversal valve 31 is connected by pressure regulator valve 33 with oil inlet P, the second hydraulic fluid port of reversal valve 31
It is connected with the first actuator port A, the 3rd hydraulic fluid port of reversal valve 31 is connected with the second actuator port B, the 4th hydraulic fluid port of reversal valve 31
It is connected with oil discharge outlet T, reversal valve 31 has the first operating position and the second operating position, in the first operating position, reversal valve
First hydraulic fluid port connects with the 3rd hydraulic fluid port of reversal valve, and the second hydraulic fluid port of reversal valve connects with the 4th hydraulic fluid port of reversal valve, second
Operating position, the first hydraulic fluid port of reversal valve connect with the second hydraulic fluid port of reversal valve, the 3rd hydraulic fluid port of reversal valve and the of reversal valve
Four hydraulic fluid ports connect.The setting of reversal valve 31 causes the oil inlet P selectively rod chamber or rodless cavity with brush driving hydraulic cylinder 6
Connect to control the down or up of brush mechanism.
Preferably, the hydraulic control system of the present embodiment also includes Hovering control valve 5.Hovering control valve 5 is arranged at second
Hovered between working chamber (rod chamber in diagram) and the second actuator port (B) for control brush mechanism in a certain position.
Hovering control valve 5 has the first hydraulic fluid port and the second hydraulic fluid port, the first hydraulic fluid port and the second actuator port of Hovering control valve 5
Connection, the second hydraulic fluid port of Hovering control valve 5 are connected with the second working chamber, and Hovering control valve 5 has the first operating position and second
Operating position, in the first operating position, fluid uni-directionally can flow to the second hydraulic fluid port from the first hydraulic fluid port；In the second working position
Put, fluid at least can flow to the first hydraulic fluid port from the second hydraulic fluid port.
Preferably, the rodless cavity that the hydraulic control system of the present embodiment also includes being arranged at brush driving hydraulic cylinder 6 returns
Restricting element 33 on oil circuit and the restricting element on the oil return line for the rod chamber for being arranged at brush driving hydraulic cylinder 6.Therefore originally
The hydraulic control system of embodiment can control the speed risen or fallen of brush mechanism.
Specifically in the present embodiment, reversal valve 31 is three position four-way directional control valve.Pressure regulator valve 33 is pressure-reducing valve.Break-make controls
Valve 32 and Hovering control valve 5 are bi-bit bi-pass stop valve.
The course of work of the hydraulic control system of the present embodiment is specifically described below：
Brush mechanism working condition：
Before brush job execution, by reversal valve 31, Hovering control valve 5 it is electric in right position work, on-off control valve
32 dead electricity are in upper work.P mouth of the system pressure oil through the first control valve group 3 enters, through 31 right position of reversal valve, pressure regulator valve
33rd, choke valve 34 is exported to the rodless cavity of brush driving hydraulic cylinder 6, brush driving hydraulic cylinder 6 by the A mouths of the first control valve group 3
Rod chamber B mouth of the hydraulic oil through Hovering control valve 5, the first control valve group 3, fuel tank is flowed back to by the T mouths of the first control valve group
1, realize the rapid decrease of brush mechanism.
The setting of choke valve 34 make it that the decrease speed of brush mechanism is controllable.Similarly, in the rate of climb of brush mechanism
It can also be controlled by another choke valve.
In brush job execution, electric it must be worked by reversal valve 31 in left position, Hovering control valve 5 electric must be in right position work
Make, on-off control valve 32 obtains electric in the next work.P mouth of the system pressure oil through the first control valve group 3 enters, through reversal valve 31
Zuo Wei, pressure regulator valve 33, restricting element are exported to the rod chamber of brush driving hydraulic cylinder 14, brush by the B mouths of the first control valve group 3
The rodless cavity hydraulic oil of driving hydraulic cylinder flows back to fuel tank 1.When pressure regulator valve 33 the second hydraulic fluid port pressure setting to certain value when, lead to
Cross and reaction force is applied to brush mechanism to realize pressure balance of contacting to earth.When the brush of brush mechanism touches ground, pressure regulator valve
When the reaction force of 33 pairs of brush mechanisms faces the reaction force sum of brush mechanism equal to the deadweight of brush mechanism with ground, brush machine
Structure no longer declines, so as to realize that brush mechanism contacts to earth pressure self-balancing function.When brush mechanism runs into up-and-down surfaced road or higher than road
During the barrier in face, because the reaction force increase of road surface or barrier to brush mechanism makes brush mechanism float, now pressure regulation
The pressure of second hydraulic fluid port of valve 33 diminishes, and system pressure is introduced into brush organization hydraulic pressure cylinder rod chamber carries out supplement fluid.When
Brush mechanism is by up-and-down surfaced road or after clearing the jumps, because road surface or barrier are recovered just to the reaction force of brush mechanism
Initial value makes brush mechanism sink, because gravity is more than reaction force of the second hydraulic fluid port of pressure regulator valve to brush mechanism, i.e. pressure regulator valve
The pressure of the second hydraulic fluid port when being more than pressure set points, unnecessary hydraulic oil returns the first control valve from the drain tap draining of pressure regulator valve 33
The T mouth cocurrents oil return box 1 of group.
After brush job execution, electric it must be worked by reversal valve 31 in left position, Hovering control valve 5 electric must be in right position work
Make, the dead electricity of on-off control valve 32 is in upper work.P mouth of the system pressure oil through the first control valve group 3 enters, through reversal valve 31
Zuo Wei, pressure regulator valve 33, the B mouths of the first control valve group 3 are exported to the rod chamber of brush driving hydraulic cylinder 6, brush driving hydraulic cylinder 6
A mouth of the rodless cavity hydraulic oil through the first control valve group 3, fuel tank 1 is flowed back to by the T mouths of the first control valve group, realizes brush mechanism
Fast lifting.
The course of work that structure is picked up in suction is similar to the course of work of above-mentioned brush mechanism, and here is omitted.
The hydraulic control system of the sanitation equipment of the present embodiment is realizing brush mechanism and sucking machine structure contacts to earth pressure from flat
While weighing apparatus operation, have both brush mechanism and sucking machine structure total pressure fast lifting and decline function., in self-balancing operation
Ask pressure regulator valve to be advisable the reaction force maximum of brush mechanism and sucking machine structure, now brush mechanism and sucking machine structure balance to
Ground like from not from state, balance competence exertion optimum efficiency.Brush mechanism bristle and the rolling of sucking machine structure are also reduced simultaneously
The rate of wear of wheel.
Finally it should be noted that：Above example is only illustrating the technical solution of the utility model rather than it is limited
System；Although the utility model is described in detail with reference to preferred embodiment, those of ordinary skill in the art should
Understand：Specific embodiment of the present utility model can still be modified or some technical characteristics are equally replaced
Change；Without departing from the spirit of technical solutions of the utility model, it all should cover in the claimed technical scheme of the utility model
Among scope.
Claims (10)
1. a kind of hydraulic control system of sanitation equipment, the hydraulic control system includes hydraulic pump, control valve group and for driving
The hydraulic cylinder of the cleaning unit lifting of the sanitation equipment is moved, the hydraulic cylinder has the first working chamber and the second working chamber, institute
Drive the cleaning unit to decline when stating the first working chamber oil-feed, drive on the cleaning unit during the second working chamber oil-feed
Rise, the control valve group has oil inlet, the first actuator port, the second actuator port and an oil discharge outlet, the oil inlet and described
The oil-out connection of hydraulic pump, first actuator port connect with first working chamber, second actuator port and institute
State the connection of the second working chamber, it is characterised in that the cleaning unit has decline state, propradation and quick condition, in institute
Decline state is stated, the control valve group controls the oil inlet to be connected with first actuator port；In the propradation, institute
Stating control valve group controls the oil inlet to be connected with second actuator port；In the quick condition, the control valve group control
The oil inlet is made to connect with second actuator port and adjust described second in the Volume Changes of second working chamber
The oil liquid pressure of actuator port is to pressure set points, when the oil liquid pressure of second actuator port is the pressure set points
When, the active force that the hydraulic cylinder applies to the cleaning unit is equal to the gravity of the cleaning unit and ground faces the cleaning
The difference of the support force of unit.
2. the hydraulic control system of sanitation equipment according to claim 1, it is characterised in that the control valve group includes adjusting
Pressure valve, the pressure regulator valve are arranged between the oil inlet and second actuator port with described in quick condition regulation
The oil liquid pressure of second actuator port.
3. the hydraulic control system of sanitation equipment according to claim 2, it is characterised in that the control valve group includes changing
To valve, the reversal valve has the first hydraulic fluid port, the second hydraulic fluid port, the 3rd hydraulic fluid port and the 4th hydraulic fluid port, the first hydraulic fluid port of the reversal valve
It is connected by the pressure regulator valve with the oil inlet, the second hydraulic fluid port of the reversal valve is connected with first actuator port, institute
The 3rd hydraulic fluid port for stating reversal valve is connected with second actuator port, and the 4th hydraulic fluid port and the oil discharge outlet of the reversal valve connect
Connecing, the reversal valve has the first operating position and the second operating position, in first operating position, the of the reversal valve
One hydraulic fluid port connects with the 3rd hydraulic fluid port of the reversal valve, and the second hydraulic fluid port of the reversal valve connects with the 4th hydraulic fluid port of the reversal valve
Logical, in second operating position, the first hydraulic fluid port of the reversal valve connects with the second hydraulic fluid port of the reversal valve, the commutation
3rd hydraulic fluid port of valve connects with the 4th hydraulic fluid port of the reversal valve.
4. the hydraulic control system of sanitation equipment according to claim 2, it is characterised in that the pressure regulator valve includes first
Hydraulic fluid port and the second hydraulic fluid port, the first hydraulic fluid port of the pressure regulator valve are connected with the oil inlet, the second hydraulic fluid port of the pressure regulator valve and institute
State the connection of the second actuator port, when the cleaning unit is in the decline state or the propradation, the pressure regulator valve
The second hydraulic fluid port oil liquid pressure be equal to the pressure regulator valve the first hydraulic fluid port oil liquid pressure；It is in and floats in the cleaning unit
During state, the oil liquid pressure of the second hydraulic fluid port of pressure regulator valve described in the pressure regulation valve regulation to the pressure set points.
5. the hydraulic control system of sanitation equipment according to claim 4, it is characterised in that the pressure regulator valve also includes the
One pressure end and second pressure end, the first pressure end are Stress control end, the second pressure end and the described second work
Oil circuit between hydraulic fluid port has connected state and off-state, and the decline state or the rising are in the cleaning unit
During state, oil circuit between the second pressure end and second actuator port disconnects, the first hydraulic fluid port of the pressure regulator valve with
The second hydraulic fluid port total head connection；When the cleaning unit is in the quick condition, the second pressure end and described the
Oil communication between two actuator ports, the first hydraulic fluid port of the pressure regulator valve form pressure isolation effect with second hydraulic fluid port,
Second hydraulic fluid port pressure is that pressure regulator valve sets pressure.
6. the hydraulic control system of sanitation equipment according to claim 5, it is characterised in that the control valve group also includes
On-off control valve, the on-off control valve are arranged between the second pressure end of the pressure regulator valve and second actuator port
To control the break-make of oil circuit between the second pressure end of the pressure regulator valve and second actuator port on oil circuit.
7. the hydraulic control system of sanitation equipment according to any one of claim 1 to 6, it is characterised in that the ring
Defend the hydraulic control system of equipment include being used for the corresponding at least one hydraulic cylinder for driving at least one cleaning unit and with
At least one control valve group that at least one hydraulic cylinder is correspondingly arranged.
8. the hydraulic control system of sanitation equipment according to any one of claim 1 to 6, it is characterised in that the liquid
Pressure control system also includes Hovering control valve, and the Hovering control valve is arranged at second working chamber and second working oil
Hovered between mouthful for the control cleaning unit in a certain position.
9. the hydraulic control system of sanitation equipment according to claim 8, it is characterised in that the Hovering control valve has
First hydraulic fluid port and the second hydraulic fluid port, the first hydraulic fluid port of the Hovering control valve are connected with second actuator port, the hovering control
Second hydraulic fluid port of valve processed is connected with second working chamber, and the Hovering control valve has the first operating position and the second working position
Put, in first operating position, fluid uni-directionally can flow to second hydraulic fluid port from first hydraulic fluid port；Described
Two operating positions, fluid at least can flow to first hydraulic fluid port from second hydraulic fluid port.
10. a kind of sanitation equipment, it is characterised in that include the hydraulic pressure of sanitation equipment as claimed in any one of claims 1-9 wherein
Control system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720650896.7U CN207131651U (en) | 2017-06-07 | 2017-06-07 | The hydraulic control system and sanitation equipment of sanitation equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720650896.7U CN207131651U (en) | 2017-06-07 | 2017-06-07 | The hydraulic control system and sanitation equipment of sanitation equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107255093A (en) * | 2017-06-07 | 2017-10-17 | 徐州徐工环境技术有限公司 | The hydraulic control system and sanitation equipment of sanitation equipment |
| CN109706866A (en) * | 2018-12-21 | 2019-05-03 | 广东易山重工股份有限公司 | A kind of sweeper stepless speed regulation energy-saving hydraulic system |
-
2017
- 2017-06-07 CN CN201720650896.7U patent/CN207131651U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107255093A (en) * | 2017-06-07 | 2017-10-17 | 徐州徐工环境技术有限公司 | The hydraulic control system and sanitation equipment of sanitation equipment |
| CN109706866A (en) * | 2018-12-21 | 2019-05-03 | 广东易山重工股份有限公司 | A kind of sweeper stepless speed regulation energy-saving hydraulic system |
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