CN206221404U - Auxiliary hydraulic system and pumping machine - Google Patents
Auxiliary hydraulic system and pumping machine Download PDFInfo
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- CN206221404U CN206221404U CN201621218847.8U CN201621218847U CN206221404U CN 206221404 U CN206221404 U CN 206221404U CN 201621218847 U CN201621218847 U CN 201621218847U CN 206221404 U CN206221404 U CN 206221404U
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- replenishing
- oil inlet
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Abstract
The utility model provides a kind of auxiliary hydraulic system and pumping machine, wherein, auxiliary hydraulic system includes：Fuel tank, hydraulic pump, replenishing valve, accumulator, main hydraulic work device and auxiliary hydraulic work device, first actuator port of replenishing valve is connected with the oil inlet of the oil inlet and outlet of accumulator, main hydraulic work device, and the second actuator port of replenishing valve is connected with the oil inlet of auxiliary hydraulic work device；Replenishing valve is used for the conducting flow of the second actuator port of break-make or/and replenishing valve that the oil inlet of replenishing valve and the second actuator port of replenishing valve are controlled according to the outlet pressure of the first actuator port.This programme is integrated by the accumulator pressurizing loop in auxiliary hydraulic system and the hydraulic circuit of auxiliary hydraulic work device, it is two circuit supplies hydraulic oil by a hydraulic pump, distributes hydraulic oil by replenishing valve and think that accumulator pressurizing or the auxiliary hydraulic work device of driving work.The number of elements of auxiliary liquid system pressure is reduced, system architecture is simplified, cost is reduced.
Description
Technical field
The utility model is related to engineering machinery field, more specifically, is related to a kind of auxiliary hydraulic system and one kind to have
The pumping machine of the auxiliary hydraulic system.
Background technology
Its auxiliary hydraulic system of concrete pumping equipment generally includes accumulator pressurizing loop and stirring loop etc. at present, stores
Energy device pressurising loop is independent with stirring loop, and accumulator pressurizing loop is oily by storage pump delivery hydraulic pressure, by accumulator
The valve group control accumulator pressurizing/off-load in pressurising loop and control loop pressure, stirring loop are oily by mixing pump delivery hydraulic pressure,
By the pressure valve control loop pressure of stirring loop, number of elements is more to cause entirely to aid in liquid system to be pressed, and high cost, structure is multiple
Miscellaneous, reliability is not high.
Utility model content
The utility model aims to solve the problem that at least one technical problem present in prior art.
Therefore, a purpose of the present utility model is, there is provided a kind of auxiliary hydraulic system.
Another purpose of the present utility model is, there is provided a kind of pumping machine, including above-mentioned auxiliary hydraulic system.
To achieve the above object, the embodiment of the utility model one side provides a kind of auxiliary hydraulic system, bag
Include：Fuel tank, hydraulic pump, replenishing valve, accumulator, main hydraulic work device and auxiliary hydraulic work device, the oil-feed of the hydraulic pump
Mouth is connected with fuel tank, and the oil-out of the hydraulic pump is connected with the oil inlet of the replenishing valve, the first work of the replenishing valve
Hydraulic fluid port is connected with the oil inlet and outlet of the accumulator, the oil inlet of the main hydraulic work device, the second work of the replenishing valve
Make hydraulic fluid port to be connected with the oil inlet of the auxiliary hydraulic work device；Wherein, the replenishing valve is used for according to first working oil
Mouthful outlet pressure control the oil inlet of the replenishing valve and the break-make of the second actuator port of the replenishing valve or/and described fill
The conducting flow of the second actuator port of liquid valve.
This programme is integrated by the accumulator pressurizing loop in auxiliary hydraulic system and the hydraulic circuit of auxiliary hydraulic work device
Integrally, by a hydraulic pump be two circuit supplies hydraulic oil, by replenishing valve distribute hydraulic oil think accumulator pressurizing or
Auxiliary hydraulic work device is driven to work.The number of elements of auxiliary liquid system pressure is reduced, system architecture is simplified, reduced into
This.
In the above embodiment, it is preferable that the main hydraulic work device can be other works such as an oil cylinder or motor
Make device, this sentences oil cylinder and is illustrated, now, the first actuator port of the replenishing valve and the main hydraulic work device it
Between be provided with oil cylinder reversal valve, the main hydraulic work device includes left oil cylinder and right oil cylinder, and the auxiliary hydraulic work device is
Stirring motor；First actuator port and the second actuator port of the oil cylinder reversal valve respectively with the oil inlet of the left oil cylinder and
The oil inlet connection of the right oil cylinder, the oil-out of the left oil cylinder, the oil-out of the right oil cylinder, the stirring motor go out
The oil return opening of hydraulic fluid port, the oil return opening of the replenishing valve and the oil cylinder reversal valve is connected with the fuel tank, and the oil cylinder commutates
The oil inlet of valve is connected with the first actuator port of the accumulator and the replenishing valve.
This programme is integrated by the accumulator pressurizing loop in auxiliary hydraulic system and stirring loop, by a hydraulic pressure
Pump is two circuit supplies hydraulic oil, distributes hydraulic oil by replenishing valve and thinks that accumulator pressurizing or driving stirring motor work.
So design reduces the number of elements of auxiliary liquid system pressure, simplifies system architecture, reduces cost.And by replenishing valve point
Equipped hydraulic oil, system hydraulic pressure directly controls the spool position of replenishing valve, is moved towards with control system oil circuit, realizes accumulator reality
Shi Zidong pressurisings, whole process fast response time, without spill losses, can reduce the demand to engine power, good energy-conserving effect,
And compression shock caused during accumulator conversion work state can be reduced.
Specifically, when the pressure of the first actuator port is smaller, hydraulic pump to the first actuator port fuel feeding, when the first work
The pressure rise of hydraulic fluid port to a certain extent, is turned on, the second work by controlling replenishing valve import with the second actuator port of replenishing valve
Make hydraulic fluid port fuel-displaced.The pressure of accumulator less than replenishing valve setting higher limit when, the oil inlet of replenishing valve and its first working oil
Mouth connection, is accumulator pressurizing；When the pressure of accumulator reaches the higher limit of replenishing valve setting, replenishing valve transposition makes replenishing valve
Oil inlet connected with its second actuator port, drive stirring motor work；Accumulator is left and right oil cylinder by oil cylinder reversal valve
Fuel feeding, drives left and right cylinder efficient, and when the pressure of accumulator reaches the lower limit of setting, the valve element transposition of replenishing valve makes topping up
The oil inlet of valve is connected with its first actuator port, is again accumulator pressurizing.
Wherein it is preferred to, the hydraulic pump is gear pump.
In any of the above-described technical scheme, it is preferable that the oil cylinder reversal valve includes auxiliary selenoid reversal valve and surge to change
To valve, the oil inlet of the auxiliary selenoid reversal valve is connected by first throttle valve with the first actuator port of the replenishing valve,
Two control ends of two actuator ports of the auxiliary selenoid reversal valve respectively with the valve element control chamber of the hydraulic directional valve are connected,
The oil inlet of the hydraulic directional valve is connected with first actuator port and the accumulator of the replenishing valve, the commutation of surging
Two actuator ports of valve are connected with the oil inlet of the left oil cylinder and the oil inlet of the right oil cylinder respectively, and the auxiliary selenoid is changed
Connected with the fuel tank respectively to the oil return opening of valve and the oil return opening of the hydraulic directional valve.
In this programme, the hydraulic oil of the first actuator port outflow of replenishing valve a, hydraulic oil flows to auxiliary selenoid commutation
The oil inlet of valve, another part hydraulic oil flows to the oil inlet of hydraulic directional valve.First throttle valve is used to reduce to replenishing valve
Impact of the hydraulic oil of the first actuator port to auxiliary selenoid reversal valve, two actuator ports of auxiliary selenoid reversal valve respectively with liquid
The two control ends connection of the valve element control chamber of dynamic reversal valve, auxiliary selenoid reversal valve is used to control the valve element position of hydraulic directional valve
Put.The oil inlet of hydraulic directional valve is connected with accumulator, two actuator ports respectively with the oil inlet of left oil cylinder and entering for right oil cylinder
Hydraulic fluid port is connected, for controlling left oil cylinder and right cylinder efficient, accumulator to be used to ensure the input pressure of oil cylinder.
Wherein, alternatively, auxiliary selenoid reversal valve and hydraulic directional valve are three-position four-way valve.
In any of the above-described technical scheme, alternatively, the oil cylinder reversal valve includes oil cylinder solenoid directional control valve, the oil cylinder
The oil inlet of solenoid directional control valve is connected with first actuator port and the accumulator of the replenishing valve, the oil cylinder electromagnetic switch
Two actuator ports of valve are connected with the oil inlet of the left oil cylinder and the oil inlet of the right oil cylinder respectively, oil cylinder solenoid directional control valve
Oil return opening connected with the fuel tank.
This programme commutates to change the working condition of left oil cylinder and right oil cylinder by oil cylinder solenoid directional control valve.
Wherein, alternatively, oil cylinder solenoid directional control valve is three-position four-way valve.
According to one embodiment of the present utility model, the replenishing valve includes pressure-compensated valve and check valve, the topping up
The oil inlet of valve oil inlet respectively with the pressure-compensated valve, the oil inlet of the check valve are connected, the pressure-compensated valve
Oil-out connected with the second actuator port of the replenishing valve, the first work of the oil-out of the check valve and the replenishing valve
Make hydraulic fluid port connection；The replenishing valve is used to control the logical of the pressure-compensated valve according to the outlet pressure of first actuator port
Disconnected or/and conducting flow.
In the above-mentioned technical solutions, it is preferable that the replenishing valve also include pressure shut-off valve or other can be according to the first work
The pressure for making hydraulic fluid port turns on the valve body of oil circuit control, and the first control chamber of the pressure-compensated valve, the pressure shut-off valve enter
Hydraulic fluid port is connected with the oil inlet of the replenishing valve, and the second control chamber of the pressure-compensated valve is fuel-displaced with the pressure shut-off valve
Mouth connection, and the second control chamber of the pressure-compensated valve is provided with recuperation valve commutation spring, the first control of the pressure shut-off valve
Chamber processed is provided with stop valve pressure spring, and the oil return opening of the pressure shut-off valve is connected with the oil return opening of the replenishing valve, the list
Connected with the second control chamber of the pressure shut-off valve to the oil-out of valve.
In this programme, entered by the first control end of pressure-compensated valve into the part in the hydraulic oil of replenishing valve oil inlet
Enter its valve element control chamber, the part flowed out in the hydraulic oil of check valve enters its valve element by the second control end of pressure shut-off valve
Control chamber, the pressure set points of pressure shut-off valve are the higher limit of replenishing valve.The pressure of accumulator sets less than pressure shut-off valve
During definite value, under the collective effect of pressure shut-off valve pressure spring and its valve element control chamber oil pressure, the oil inlet of pressure shut-off valve
Connected with its oil-out, the hydraulic oil into pressure shut-off valve oil inlet enters its valve element by the second control end of pressure-compensated valve
Control chamber, under the collective effect of pressure-compensated valve commutation spring and its valve element control chamber oil pressure, the oil inlet of pressure-compensated valve
Disconnected with its oil-out, the oil inlet of replenishing valve is connected with its first actuator port, so as to be accumulator pressurizing；Accumulator
When pressure reaches the setting value of pressure shut-off valve, in pressure shut-off valve pressure spring and its collective effect of valve element control chamber oil pressure
Under, the oil return opening of pressure shut-off valve is connected with its oil-out, and the control chamber of pressure-compensated valve first passes through pressure shut-off valve and fuel tank
Connection, the hydraulic oil of pressure compensation valve core the first control end of control chamber flows into fuel tank, pressure-compensated valve commutate spring and its
Under the collective effect of valve element control chamber oil pressure, the oil inlet of pressure-compensated valve is connected with its oil-out, makes the oil inlet of replenishing valve
Connected with its second actuator port, so as to drive stirring motor to work；Accumulator is by oil cylinder reversal valve for left and right oil cylinder is supplied
Oil, when its pressure reaches the lower limit of setting, pressure shut-off valve is in its back-moving spring and its common work of valve element control chamber oil pressure
Lower commutation is used, its oil inlet is connected with its oil-out, be again pressure-compensated valve the second control chamber fuel feeding, pressure-compensated valve exists
Go off state under the collective effect of its back-moving spring and its valve element control chamber oil pressure, make the oil inlet of replenishing valve again with its
First actuator port is connected, so as to be again accumulator pressurizing.
In any of the above-described technical scheme, it is preferable that the second control chamber of the pressure shut-off valve includes the first seed oil mouthful
With the second seed oil mouthful, the oil-out of the check valve connect with first seed oil mouthful, the oil-out of the pressure shut-off valve and
The second control chamber connection of second seed oil mouthful and the pressure-compensated valve.
In this programme, the oil-out of pressure shut-off valve is connected with the second control chamber of pressure-compensated valve, by pressure shut-off valve
Oil-out outflow hydraulic oil in a part its valve element control chamber is entered by second seed oil mouthful of the first control end, with its valve
The hydraulic oil and its back-moving spring of core control chamber other entrances inflow coordinate, to control the position of its valve element.
In any of the above-described technical scheme, it is preferable that the replenishing valve also includes second throttle, the second throttle
Oil inlet be connected with the first control chamber of the pressure-compensated valve, the oil-out of the second throttle and the check valve
Oil inlet and the pressure shut-off valve oil inlet connection.
In this programme, second throttle throttles to the hydraulic oil that replenishing valve oil inlet is flowed into, single for controlling flow direction
To valve and the oil mass of pressure shut-off valve, so that into the part in the hydraulic oil of replenishing valve oil inlet by the of pressure-compensated valve
One control end enters its valve element control chamber.
In any of the above-described technical scheme, it is preferable that the pressure-compensated valve includes hydraulic pilot formula 2/2-way ratio
Control valve；The pressure shut-off valve includes hydraulic pilot formula two-bit triplet reversal valve.
According to one embodiment of the present utility model, the replenishing valve includes electric control reversing valve, check valve and control unit,
The oil inlet of replenishing valve oil inlet respectively with the electric control reversing valve, the oil inlet of the check valve are connected, the electricity
The oil-out for controlling reversal valve is connected with the second actuator port of the replenishing valve, the oil-out of the check valve and the replenishing valve
The first actuator port connection；First actuator port of the replenishing valve is connected with pressure detecting element, described control unit with
The pressure detecting element and the electric control reversing valve are connected, for the Stress control institute detected according to the pressure detecting element
State electric control reversing valve commutation.
In any of the above-described technical scheme, it is preferable that the auxiliary hydraulic system also includes off-load reversal valve, the topping up
Second actuator port of valve can be by the oil inlet or the fuel tank of the off-load reversal valve and the auxiliary hydraulic work device
Connection.
In this programme, off-load reversal valve can select two-bit triplet magnetic valve, the oil inlet and topping up of two-bit triplet magnetic valve
The second actuator port connection of valve, the first oil-out of two-bit triplet magnetic valve is connected with the oil inlet of stirring motor, second goes out
Hydraulic fluid port is connected with fuel tank.When needing to be stirred work, the oil inlet of two-bit triplet magnetic valve is connected with its first oil-out,
So that the oil-out of hydraulic pump is connected by replenishing valve and two-bit triplet magnetic valve with the oil inlet of stirring motor, so as to stir horse
Up to work.When needing to carry out off-load to the hydraulic oil of hydraulic pump conveying, the oil inlet of two-bit triplet magnetic valve second goes out with it
Hydraulic fluid port is connected, so that the oil-out of hydraulic pump is connected by replenishing valve and two-bit triplet magnetic valve with fuel tank.
In any of the above-described technical scheme, it is preferable that the auxiliary hydraulic system also includes overflow valve, the overflow valve
Oil inlet is connected with the oil-out of hydraulic pump, and the oil-out of the overflow valve is connected with the fuel tank.
In the prior art, in auxiliary hydraulic system accumulator pressurizing loop and stirring loop is independent, and accumulator fills
Pushing back road and stirring loop respectively needs a pressure for overflow valve control loop.And this programme is by the accumulation of energy in auxiliary hydraulic system
Device pressurising loop and stirring loop are integrated, by an overflow valve control system pressure, can so save one and overflow
Stream valve, so as to reduce the cost of product.
The embodiment of the utility model second aspect provides a kind of pumping machine, including such as the utility model first aspect
The auxiliary hydraulic system that any embodiment is provided.
The pumping machine that the utility model second aspect embodiment is provided includes any implementation of the utility model first aspect
The auxiliary hydraulic system that example is provided, therefore the pumping machine has the whole of the auxiliary hydraulic system of any of the above-described embodiment offer
Beneficial effect, will not be repeated here.
Additional aspect of the present utility model and advantage will become obvious in following description section, or new by this practicality
The practice of type is recognized.
Brief description of the drawings
Of the present utility model above-mentioned and/or additional aspect and advantage will from description of the accompanying drawings below to embodiment is combined
Become substantially and be readily appreciated that, wherein：
Fig. 1 is the structural representation of the auxiliary hydraulic system that the embodiment of the utility model one is provided.
Wherein, the corresponding relation between the reference and component names in Fig. 1 is：
1 fuel tank, 2 hydraulic pumps, 3 replenishing valves, 31 pressure-compensated valves, 32 check valves, 33 pressure shut-off valves, 34 second throttlings
Valve, 4 accumulators, 5 stirring motors, 6 oil cylinder reversal valves, 61 auxiliary selenoid reversal valves, 62 hydraulic directional valves, 7 left oil cylinders, 8 right oil
Cylinder, 9 overflow valves, 10 first throttle valves.
Specific embodiment
In order to be more clearly understood that above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the accompanying drawings and tool
Body implementation method is further described in detail to the utility model.It should be noted that in the case where not conflicting, this Shen
Feature in embodiment please and embodiment can be mutually combined.
Many details are elaborated in the following description in order to fully understand the utility model, but, this practicality
It is new to be different from mode described here using other to implement, therefore, protection domain of the present utility model is not received
The limitation of following public specific embodiment.
As shown in figure 1, the embodiment of the utility model one side provides a kind of auxiliary hydraulic system, including：Bag
Include：Fuel tank 1, hydraulic pump 2, replenishing valve 3, accumulator 4, main hydraulic work device and auxiliary hydraulic work device, the hydraulic pump 2
Oil inlet is connected with fuel tank 1, and the oil-out of the hydraulic pump 2 is connected with the oil inlet of the replenishing valve 3, the replenishing valve 3
First actuator port is connected with the oil inlet and outlet of the accumulator 4, the oil inlet of the main hydraulic work device, the replenishing valve
3 the second actuator port is connected with the oil inlet of the auxiliary hydraulic work device；Wherein, the replenishing valve 3 is used for according to described
The outlet pressure of the first actuator port controls the oil inlet of the replenishing valve 3 logical with the second actuator port of the replenishing valve 3
The conducting flow of the second actuator port of the disconnected or/and replenishing valve 3.
This programme is integrated by the accumulator pressurizing loop in auxiliary hydraulic system and the hydraulic circuit of auxiliary hydraulic work device
Integrally, by a hydraulic pump be two circuit supplies hydraulic oil, by replenishing valve distribute hydraulic oil think accumulator pressurizing or
Auxiliary hydraulic work device is driven to work.When the outlet pressure (i.e. the setting pressure of accumulator 4) of the first actuator port of replenishing valve 3
During less than setting pressure, hydraulic pump 2 passes through replenishing valve 3 to the first actuator port fuel feeding, when the pressure of the first actuator port is more than
During setting pressure, replenishing valve commutation, while to the first actuator port and the second actuator port fuel feeding, or only to the second actuator port
Fuel feeding, or change the conducting flow of the second actuator port, so that reduce or disconnect the pressurising to accumulator 4, easy to control, letter
Single, the stability of a system is good, meanwhile, the number of elements of auxiliary liquid system pressure is reduced, system architecture is simplified, reduce cost.
And hydraulic oil is distributed by replenishing valve, system hydraulic pressure is directly controlled the spool position of replenishing valve, is walked with control system oil circuit
To, accumulator automatic pressurising in real time is realized, whole process fast response time, without spill losses, can reduce to engine power
Demand, good energy-conserving effect, and compression shock caused during accumulator conversion work state can be reduced.
In the above embodiment, it is preferable that the main hydraulic work device can be other works such as an oil cylinder or motor
Make device, this sentences oil cylinder and is illustrated, now, the first actuator port of the replenishing valve 3 and the main hydraulic work device
Between be provided with oil cylinder reversal valve 6, the main hydraulic work device includes left oil cylinder 7 and right oil cylinder 8, the auxiliary hydraulic dress
It is set to stirring motor 5；First actuator port and the second actuator port of the oil cylinder reversal valve 6 respectively with the left oil cylinder 7
Oil inlet is connected with the oil inlet of the right oil cylinder 8, the oil-out of the left oil cylinder 7, the oil-out of the right oil cylinder 8, described
The oil return opening of the oil-out of stirring motor 5, the oil return opening of the replenishing valve 3 and the oil cylinder reversal valve 6 respectively with the fuel tank 1
Connect, and the oil inlet of the oil cylinder reversal valve 6 is connected with the first actuator port of the accumulator 4 and the replenishing valve 3.
This programme is integrated by the pressurising loop of accumulator 4 in auxiliary hydraulic system and stirring loop, by a liquid
Press pump 2 is two circuit supplies hydraulic oil, distributes hydraulic oil by replenishing valve 3 and thinks the pressurising of accumulator 4 or driving stirring horse
Up to 5 work.So design reduces the number of elements of auxiliary liquid system pressure, simplifies system architecture, reduces cost.And pass through
Replenishing valve 3 distributes hydraulic oil, and system hydraulic pressure directly controls the spool position of replenishing valve 3, is moved towards with control system oil circuit, real
Existing accumulator 4 automatic pressurising in real time, whole process fast response time, without spill losses, can reduce the demand to engine power,
Good energy-conserving effect, and compression shock caused during 4 conversion work state of accumulator can be reduced.
Specifically, the pressure of accumulator 4 less than replenishing valve 3 setting higher limit when, the oil inlet of replenishing valve 3 with its first
Actuator port is connected, and is the pressurising of accumulator 4；When the pressure of accumulator 4 reaches the higher limit of the setting of replenishing valve 3, replenishing valve 3 is changed
Position, makes the oil inlet of replenishing valve 3 be connected with its second actuator port, drives stirring motor 5 to work；Accumulator 4 is changed by oil cylinder
It is the fuel feeding of left and right oil cylinder 8 to valve 6, drives left and right oil cylinder 8 to work, when the pressure of accumulator 4 reaches the lower limit of setting, topping up
The valve element transposition of valve 3, makes the oil inlet of replenishing valve 3 be connected with its first actuator port, is again the pressurising of accumulator 4.
Wherein it is preferred to, the hydraulic pump 2 is gear pump.
To realize that " replenishing valve 3 is used to control the replenishing valve 3 according to the outlet pressure of first actuator port
The conducting stream of oil inlet and the second actuator port of the break-make or/and the replenishing valve 3 of the second actuator port of the replenishing valve 3
Amount ", replenishing valve can have multiple choices, and according in a preferred embodiment of the present utility model, the replenishing valve 3 includes pressure
Recuperation valve 31 and check valve 32, it is the oil inlet of the replenishing valve 3 oil inlet respectively with the pressure-compensated valve 31, described unidirectional
The oil inlet connection of valve, the oil-out of the pressure-compensated valve 31 is connected with the second actuator port of the replenishing valve, the list
Connected with the first actuator port of the replenishing valve 3 to the oil-out of valve 32；The replenishing valve 3 is used for according to the described first work
The outlet pressure of hydraulic fluid port controls the break-make or/and conducting flow of the pressure-compensated valve 31.
In the above-mentioned technical solutions, it is preferable that the replenishing valve 3 also include pressure shut-off valve 33 or other can be according to first
The pressure of actuator port turns on the valve body of oil circuit control, the first control chamber of the pressure-compensated valve 31, the pressure shut-off valve
33 oil inlet is connected with the oil inlet of the replenishing valve 3, and the second control chamber and the pressure of the pressure-compensated valve 31 are cut
The oil-out connection of disconnected valve 33, and the second control chamber of the pressure-compensated valve 31 is provided with recuperation valve commutation spring, the pressure
First control chamber of stop valve 33 is provided with stop valve pressure spring, the oil return opening of the pressure shut-off valve 33 and the replenishing valve 3
Oil return opening connection, the oil-out of the check valve 32 connects with the second control chamber of the pressure shut-off valve 33.
In this programme, controlled by the first of pressure-compensated valve 31 into the part in the hydraulic oil of the oil inlet of replenishing valve 3
End enters its valve element control chamber, and the part flowed out in the hydraulic oil of check valve 32 is entered by the second control end of pressure shut-off valve 33
Enter its valve element control chamber, the pressure set points of pressure shut-off valve 33 are the higher limit of replenishing valve 3.The pressure of accumulator 4 is less than pressure
During the setting value of power stop valve 33, under the collective effect of the back-moving spring of pressure shut-off valve 33 and its valve element control chamber oil pressure, pressure
The oil inlet of power stop valve 33 is connected with its oil-out, and the hydraulic oil into the oil inlet of pressure shut-off valve 33 is by pressure-compensated valve 31
The second control end enter its valve element control chamber, in the back-moving spring of pressure-compensated valve 31 and its common work of valve element control chamber oil pressure
Under, the oil inlet of pressure-compensated valve 31 disconnects with its oil-out, and the oil inlet and its first actuator port for making replenishing valve 3 connect
It is logical, so as to be the pressurising of accumulator 4；It is multiple in pressure shut-off valve 33 when the pressure of accumulator 4 reaches the setting value of pressure shut-off valve 33
Under the collective effect of position spring and its valve element control chamber oil pressure, the oil return opening of pressure shut-off valve 33 is connected with its oil-out, pressure
The control chamber of recuperation valve 31 first is connected by pressure shut-off valve 33 with fuel tank 1, and the valve element control chamber first of pressure-compensated valve 31 is controlled
The hydraulic oil at end flows into fuel tank 1, under the collective effect of the back-moving spring of pressure-compensated valve 31 and its valve element control chamber oil pressure, pressure
The oil inlet of recuperation valve 31 is connected with its oil-out, the oil inlet of replenishing valve 3 is connected with its second actuator port, so as to drive
Stirring motor 5 works；Accumulator 4 is the fuel feeding of left and right oil cylinder 8 by oil cylinder reversal valve 6, and its pressure reaches the lower limit of setting
When, pressure shut-off valve 33 commutates under the collective effect of its back-moving spring and its valve element control chamber oil pressure, make its oil inlet and its
Oil-out is connected, and is again the control chamber fuel feeding of pressure-compensated valve 31 second, and pressure-compensated valve 31 is in its back-moving spring and its valve element
State is gone off under the collective effect of control chamber oil pressure, the oil inlet of replenishing valve 3 is connected with its first actuator port again,
So as to be again the pressurising of accumulator 4.
In any of the above-described technical scheme, it is preferable that the second control chamber of the pressure shut-off valve 33 includes the first seed oil
Mouthful and the second seed oil mouthful, the oil-out of the check valve 32 connects with first seed oil mouthful, and the pressure shut-off valve 33 goes out
Hydraulic fluid port is connected with the second control chamber of second seed oil mouthful and the pressure-compensated valve 31.
In this programme, the oil-out of pressure shut-off valve 33 is connected with the second control chamber of pressure-compensated valve 31, is cut by pressure
A part in the hydraulic oil of the oil-out outflow of disconnected valve 33 enters its valve element control chamber by second seed oil mouthful of the first control end,
Hydraulic oil and its back-moving spring with its valve element control chamber other entrances inflow coordinate, to control the position of its valve element.
In any of the above-described technical scheme, it is preferable that the replenishing valve 3 also includes second throttle 34, the second section
Flow valve 34 oil inlet be connected with the first control chamber of the pressure-compensated valve 31, the oil-out of the second throttle 34 with
The oil inlet connection of the oil inlet of the check valve 32 and the pressure shut-off valve 33.
In this programme, second throttle 34 throttles to the hydraulic oil that the oil inlet of replenishing valve 3 is flowed into, for controlling to flow to
The oil mass of check valve 32 and pressure shut-off valve 33, so as to be mended by pressure into the part in the hydraulic oil of the oil inlet of replenishing valve 3
The first control end for repaying valve 31 enters its valve element control chamber.
In any of the above-described technical scheme, it is preferable that the pressure-compensated valve 31 includes hydraulic pilot formula 2/2-way ratio
Example control valve；The pressure shut-off valve 33 includes hydraulic pilot formula two-bit triplet reversal valve.
According in another preferred embodiment of the present utility model, the replenishing valve includes electric control reversing valve, check valve
And control unit, the oil inlet of replenishing valve oil inlet, the oil inlet of the check valve respectively with the electric control reversing valve
Connection, the oil-out of the electric control reversing valve is connected with the second actuator port of the replenishing valve, the oil-out of the check valve
Connected with the first actuator port of the replenishing valve；First actuator port of the replenishing valve is connected with pressure detecting element, institute
State control unit to be connected with the pressure detecting element and the electric control reversing valve, for being detected according to the pressure detecting element
Stress control described in electric control reversing valve commutation.
In any of the above-described technical scheme, it is preferable that the auxiliary hydraulic system also includes off-load reversal valve, the topping up
Second actuator port of valve 3 being capable of entering by the off-load reversal valve and auxiliary hydraulic work device (i.e. the stirring motor 5)
Hydraulic fluid port or the fuel tank 1 are connected.
In this programme, off-load reversal valve can select two-bit triplet magnetic valve, the oil inlet and topping up of two-bit triplet magnetic valve
The second actuator port connection of valve 3, the first oil-out of two-bit triplet magnetic valve is connected with the oil inlet of stirring motor 5, second
Oil-out is connected with fuel tank 1.When needing to be stirred work, the oil inlet of two-bit triplet magnetic valve connects with its first oil-out
It is logical, so that the oil-out of hydraulic pump 2 is connected by replenishing valve 3 and two-bit triplet magnetic valve with the oil inlet of stirring motor 5, so that
Stirring motor 5 works.When need to hydraulic pump 2 conveying hydraulic oil carry out off-load when, the oil inlet of two-bit triplet magnetic valve with
Its second oil-out is connected, so that the oil-out of hydraulic pump 2 is connected by replenishing valve 3 and two-bit triplet magnetic valve with fuel tank 1.
In any of the above-described technical scheme, it is preferable that the auxiliary hydraulic system also includes overflow valve 9, the overflow valve 9
Oil inlet connected with the oil-out of hydraulic pump 2, the oil-out of the overflow valve 9 is connected with the fuel tank 1.
In the prior art, in auxiliary hydraulic system accumulator pressurizing loop and stirring loop is independent, and accumulator fills
Pushing back road and stirring loop respectively needs a pressure for overflow valve control loop.And this programme is by the accumulation of energy in auxiliary hydraulic system
The pressurising loop of device 4 and stirring loop are integrated, by the control system pressure of overflow valve 9, can so save one
Overflow valve 9, so as to reduce the cost of product.
Wherein, the design of the oil cylinder reversal valve 6 includes numerous embodiments：
Embodiment one：
As described in Figure 1, the oil cylinder reversal valve 6 includes auxiliary selenoid reversal valve 61 and hydraulic directional valve 62, the auxiliary
Solenoid directional control valve 61 and the hydraulic directional valve 62 are three-position four-way valve, the oil inlet of the auxiliary selenoid reversal valve 61 and
The oil-out connection of one choke valve 10, the first actuator port of the oil inlet of the first throttle valve 10 and the replenishing valve 3 and
The accumulator 4 is connected, two actuator ports of the auxiliary selenoid reversal valve 61 respectively with the valve element of the hydraulic directional valve 62
The two control ends connection of control chamber, first actuator port of the oil inlet of the hydraulic directional valve 62 with the replenishing valve 3 and institute
Accumulator 4 is stated to connect, two actuator ports of the hydraulic directional valve 62 respectively with the oil inlet and the right oil of the left oil cylinder 7
The oil inlet connection of cylinder 8, the oil return opening of the auxiliary selenoid reversal valve 61 and the oil return opening of the hydraulic directional valve 62 respectively with
The fuel tank 1 is connected.
In this programme, the hydraulic oil of the first actuator port outflow of replenishing valve 3 a, hydraulic oil flows to auxiliary selenoid commutation
The oil inlet of valve 61, another part hydraulic oil flows to the oil inlet of hydraulic directional valve 62.First throttle valve is used to reduce to topping up
Impact of the hydraulic oil of the first actuator port of valve to auxiliary selenoid reversal valve, two actuator ports point of auxiliary selenoid reversal valve 61
Two control ends not with the valve element control chamber of hydraulic directional valve 62 are connected, and auxiliary selenoid reversal valve 61 is used to control hydraulic directional valve
62 spool position.The oil inlet of hydraulic directional valve 62 is connected with accumulator 4, two actuator ports respectively with the oil-feed of left oil cylinder 7
Mouth is connected with the oil inlet of right oil cylinder 8, and for controlling left oil cylinder 7 and right oil cylinder 8 to work, accumulator is used to ensure the oil-feed of oil cylinder
Pressure.
Embodiment two：(not shown)
The oil cylinder reversal valve includes oil cylinder solenoid directional control valve, oil inlet and the topping up of the oil cylinder solenoid directional control valve
First actuator port of valve and the accumulator are connected, two actuator ports of the oil cylinder solenoid directional control valve respectively with the left oil
The oil inlet of cylinder is connected with the oil inlet of the right oil cylinder, and the oil return opening of oil cylinder solenoid directional control valve is connected with the fuel tank.
This programme commutates to change the working condition of left oil cylinder and right oil cylinder by oil cylinder solenoid directional control valve.
Wherein, alternatively, oil cylinder solenoid directional control valve is three-position four-way valve.
The embodiment of the utility model second aspect provides a kind of pumping machine, including such as the utility model first aspect
The auxiliary hydraulic system that any embodiment is provided.
The pumping machine that the utility model second aspect embodiment is provided includes any implementation of the utility model first aspect
The auxiliary hydraulic system that example is provided, therefore the pumping machine has the whole of the auxiliary hydraulic system of any of the above-described embodiment offer
Beneficial effect, will not be repeated here.
In description of the present utility model, it is to be understood that term " first ", " second " are only used for the purpose of description,
And it is not intended that indicate or imply relative importance, unless otherwise clearly defined and limited；Term " connection ", " installation ",
" fixation " etc. all should be interpreted broadly, for example, " connection " can be fixedly connected, or be detachably connected, or integratedly
Connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary.For the ordinary skill in the art,
Concrete meaning of the above-mentioned term in the utility model can as the case may be understood.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that the specific features, structure, material or the feature that are described with reference to the embodiment or example are contained in of the present utility model at least one
In individual embodiment or example.In this manual, the schematic representation to above-mentioned term is not necessarily referring to identical embodiment
Or example.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements made etc. should be included within protection domain of the present utility model.
Claims (10)
1. a kind of auxiliary hydraulic system, it is characterised in that including：Fuel tank, hydraulic pump, replenishing valve, accumulator, main hydraulic dress
Put and connected with the fuel tank with auxiliary hydraulic work device, the oil inlet of the hydraulic pump, the oil-out of the hydraulic pump with it is described
The oil inlet connection of replenishing valve, the first actuator port of the replenishing valve and the oil inlet and outlet of the accumulator, the main hydraulic pressure
The oil inlet connection of equipment, the second actuator port of the replenishing valve connects with the oil inlet of the auxiliary hydraulic work device
It is logical；
Wherein, the replenishing valve be used for according to the outlet pressure of first actuator port control the oil inlet of the replenishing valve with
The conducting flow of the break-make of the second actuator port of the replenishing valve or/and the second actuator port of the replenishing valve.
2. auxiliary hydraulic system according to claim 1, it is characterised in that
Also include the oil cylinder reversal valve being arranged between the first actuator port of the replenishing valve and the main hydraulic work device,
The main hydraulic work device includes left oil cylinder and right oil cylinder, and the auxiliary hydraulic work device is stirring motor；
First actuator port and the second actuator port of the oil cylinder reversal valve respectively with the oil inlet of the left oil cylinder and described
Right oil cylinder oil inlet connection, the oil-out of the left oil cylinder, the oil-out of the right oil cylinder, the stirring motor it is fuel-displaced
The oil return opening of mouth, the oil return opening of the replenishing valve and the oil cylinder reversal valve is connected with the fuel tank, and the oil cylinder reversal valve
Oil inlet connected with the first actuator port of the accumulator and the replenishing valve.
3. auxiliary hydraulic system according to claim 2, it is characterised in that
The oil cylinder reversal valve includes auxiliary selenoid reversal valve and hydraulic directional valve, and the oil inlet of the auxiliary selenoid reversal valve leads to
Cross first throttle valve to be connected with the first actuator port of the replenishing valve, the two actuator ports difference of the auxiliary selenoid reversal valve
Two control ends with the valve element control chamber of the hydraulic directional valve are connected, the oil inlet of the hydraulic directional valve and the replenishing valve
The first actuator port and accumulator connection, two actuator ports of the hydraulic directional valve enter with the left oil cylinder respectively
Hydraulic fluid port is connected with the oil inlet of the right oil cylinder, the oil return of the oil return opening and the hydraulic directional valve of the auxiliary selenoid reversal valve
Mouth is connected with the fuel tank respectively；Or
The oil cylinder reversal valve includes oil cylinder solenoid directional control valve, oil inlet and the replenishing valve of the oil cylinder solenoid directional control valve
First actuator port and the accumulator are connected, two actuator ports of the oil cylinder solenoid directional control valve respectively with the left oil cylinder
Oil inlet is connected with the oil inlet of the right oil cylinder, and the oil return opening of oil cylinder solenoid directional control valve is connected with the fuel tank.
4. auxiliary hydraulic system according to any one of claim 1 to 3, it is characterised in that
The replenishing valve includes pressure-compensated valve and check valve, the oil inlet of the replenishing valve respectively with the pressure-compensated valve
The oil inlet connection of oil inlet, the check valve, the second working oil of the oil-out of the pressure-compensated valve and the replenishing valve
Mouth connection, the oil-out of the check valve is connected with the first actuator port of the replenishing valve；The replenishing valve is used for according to institute
The outlet pressure for stating the first actuator port controls the break-make or/and conducting flow of the pressure-compensated valve.
5. auxiliary hydraulic system according to claim 4, it is characterised in that
The replenishing valve also includes pressure shut-off valve, and the first control chamber of the pressure-compensated valve, the pressure shut-off valve enter
Hydraulic fluid port is connected with the oil inlet of the replenishing valve, and the second control chamber of the pressure-compensated valve is fuel-displaced with the pressure shut-off valve
Mouth connection, and the second control chamber of the pressure-compensated valve is provided with recuperation valve commutation spring, the first control of the pressure shut-off valve
Chamber processed is provided with stop valve pressure spring, and the oil return opening of the pressure shut-off valve is connected with the oil return opening of the replenishing valve, the list
Connected with the second control chamber of the pressure shut-off valve to the oil-out of valve.
6. auxiliary hydraulic system according to claim 5, it is characterised in that
Second control chamber of the pressure shut-off valve includes the first seed oil mouthful and the second seed oil mouthful, the oil-out of the check valve with
The of first seed oil mouthful connection, the oil-out of the pressure shut-off valve and second seed oil mouthful and the pressure-compensated valve
Two control chambers are connected；
The replenishing valve also includes second throttle, and the oil inlet of the second throttle is controlled with the first of the pressure-compensated valve
Chamber processed is connected, the oil-out of the second throttle and the oil inlet of the check valve and the oil inlet of the pressure shut-off valve
Connection.
7. auxiliary hydraulic system according to claim 5, it is characterised in that
The pressure-compensated valve includes hydraulic pilot formula 2/2-way proportional control valve；
The pressure shut-off valve includes hydraulic pilot formula two-bit triplet reversal valve.
8. auxiliary hydraulic system according to any one of claim 1 to 3, it is characterised in that
The replenishing valve includes electric control reversing valve, check valve and control unit, the oil inlet of the replenishing valve respectively with the electricity
Control the oil inlet connection of the oil inlet, the check valve of reversal valve, the oil-out of the electric control reversing valve and the replenishing valve
Second actuator port is connected, and the oil-out of the check valve is connected with the first actuator port of the replenishing valve；
First actuator port of the replenishing valve is connected with pressure detecting element, described control unit and the pressure detecting element
And electric control reversing valve connection, changed for electric control reversing valve described in the Stress control that is detected according to the pressure detecting element
To.
9. auxiliary hydraulic system according to any one of claim 1 to 3, it is characterised in that
The auxiliary hydraulic system also includes off-load reversal valve, and the second actuator port of the replenishing valve is commutated by the off-load
Valve is connected with the oil inlet or the fuel tank of the auxiliary hydraulic work device.
10. a kind of pumping machine, it is characterised in that including auxiliary hydraulic system as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621218847.8U CN206221404U (en) | 2016-11-11 | 2016-11-11 | Auxiliary hydraulic system and pumping machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621218847.8U CN206221404U (en) | 2016-11-11 | 2016-11-11 | Auxiliary hydraulic system and pumping machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206221404U true CN206221404U (en) | 2017-06-06 |
Family
ID=58792362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621218847.8U Withdrawn - After Issue CN206221404U (en) | 2016-11-11 | 2016-11-11 | Auxiliary hydraulic system and pumping machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206221404U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351899A (en) * | 2016-11-11 | 2017-01-25 | 三汽车制造有限公司 | Auxiliary hydraulic pressure system and pumping machine |
| CN107100906A (en) * | 2017-06-27 | 2017-08-29 | 江苏柳工机械有限公司 | The flow distributing system of oblique angle sweeper |
-
2016
- 2016-11-11 CN CN201621218847.8U patent/CN206221404U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351899A (en) * | 2016-11-11 | 2017-01-25 | 三汽车制造有限公司 | Auxiliary hydraulic pressure system and pumping machine |
| CN107100906A (en) * | 2017-06-27 | 2017-08-29 | 江苏柳工机械有限公司 | The flow distributing system of oblique angle sweeper |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170606 Effective date of abandoning: 20180413 |