CN209146024U - Multifunctional vehicle accessory control system and multifunctional vehicle - Google Patents
Multifunctional vehicle accessory control system and multifunctional vehicle Download PDFInfo
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- CN209146024U CN209146024U CN201821193449.4U CN201821193449U CN209146024U CN 209146024 U CN209146024 U CN 209146024U CN 201821193449 U CN201821193449 U CN 201821193449U CN 209146024 U CN209146024 U CN 209146024U
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Abstract
The utility model relates to a kind of multifunctional vehicle accessory control system and multifunctional vehicles, wherein multifunctional vehicle accessory control system, multifunctional vehicle includes a variety of accessory executing agencies with different work function, accessory control system includes: the first control valve, it is connect with the rodless cavity of accessory executing agency, for controlling the flow and pressure that enter the oil liquid of rodless cavity and outflow rodless cavity；It with the second control valve, is connect with the rod chamber of accessory executing agency, for controlling the flow and pressure that enter the oil liquid of rod chamber and outflow rod chamber.The utility model both can flow to the oil liquid of the rodless cavity into and out of accessory executing agency and pressure be adjusted and control, again can flow to the oil liquid of the rod chamber into and out of accessory executing agency and pressure be adjusted and control, it allows it to adapt to different operation accessories, meet different operation accessories to the different demands of flow and pressure, simplify the operating process after replacement operation accessory, improves accessory and replace efficiency.
Description
Technical field
The utility model relates to technical field of engineering machinery more particularly to a kind of multifunctional vehicle accessory control systems and more
Function vehicle.
Background technique
When Multifunctional rescue vehicle is mainly used in the generation of the natural calamities such as earthquake, flood, landslide, landslide, mud-rock flow
It carries out road to rob logical, stone cleaning, bury people and object rescue, bar cutting, ruins cleaning etc., job requirements should
It realizes digging operation, while to be also equipped with several work accessory, realize that various engineering operation (for example cutting, snatch, shearing, is broken
It is broken etc.).
Currently, the function of the existing operation accessory for Multifunctional rescue vehicle is relatively simple, various operation accessories
Between interchangeability it is poor, cause to need constantly to replace different operation accessories in rescue and work by turns, easily cause
The crowded confusion of rescue site；And operating pressure and the flow parameter requirement of several work accessory are all different, need operator
Member adjusts time-consuming and laborious by manually adjusting, and is easy error.
Currently, the hydraulic valve versatility of existing control operation accessory is poor, it is not able to satisfy a variety of different work accessories
Different pressures demand, therefore, need to design it is a kind of can be realized between several work accessory quickly, the control system that efficiently switches
System.
It should be noted that the information for being disclosed in the utility model background technology part is merely intended to increase to originally practical new
The understanding of the general background of type, and be not construed as recognizing or implying in any form that information composition has been art technology
The prior art well known to personnel.
Utility model content
The purpose of this utility model is to propose a kind of multifunctional vehicle accessory control system and multifunctional vehicle, so that more function
Energy vehicle accessory control system can adjust the flow and pressure of accessory executing agency, be needed with adapting to the different of different work accessory
It asks.
To achieve the above object, the utility model provides a kind of multifunctional vehicle accessory control system, multifunctional vehicle
Including a variety of accessory executing agencies with different work function, multifunctional vehicle accessory control system includes:
First control valve is connect with the rodless cavity of accessory executing agency, enters rodless cavity and outflow rodless cavity for controlling
Oil liquid flow and pressure；With
Second control valve is connect with the rod chamber of accessory executing agency, enters rod chamber and outflow rod chamber for controlling
Oil liquid flow and pressure.
Optionally, the first control valve is proportional control valve, and the first hydraulic fluid port of the first control valve is connect with rodless cavity, the first control
Second hydraulic fluid port of valve processed is connect with oil sources, and the third hydraulic fluid port of the first control valve is connect with oil return line, and the first control valve is in first
When working position, the first hydraulic fluid port is connected to the second hydraulic fluid port, the truncation of third hydraulic fluid port；When first control valve is in the second working position,
First hydraulic fluid port is connected to third hydraulic fluid port, the truncation of the second hydraulic fluid port；And/or
Second control valve is proportional control valve, and the first hydraulic fluid port of the second control valve is connect with rod chamber, the second control valve
Second hydraulic fluid port is connect with oil sources, and the third hydraulic fluid port of the second control valve is connect with oil return line, and the second control valve is in the first working position
When, the first hydraulic fluid port is connected to the second hydraulic fluid port, the truncation of third hydraulic fluid port；When second control valve is in the second working position, the first oil
Mouth is connected to third hydraulic fluid port, the truncation of the second hydraulic fluid port.
Optionally, multifunctional vehicle accessory control system further include:
First pilot control valve, for controlling the valve core movement of the first control valve；With
Second pilot control valve, for controlling the valve core movement of the second control valve.
Optionally, multifunctional vehicle accessory control system further includes controller, the first pilot control valve and/or the second guide
Control valve is solenoid electric valve, and the valve core movement of the first pilot control valve and/or the second pilot control valve, which passes through controller, to carry out
Control.
Optionally, the oil inlet of the first pilot control valve is connected to oil sources, and is set between the first pilot control valve and oil sources
There is pressure reducing valve；And/or second the oil inlet of pilot control valve be connected to oil sources, and set between the second pilot control valve and oil sources
There is pressure reducing valve.
Optionally, multifunctional vehicle accessory control system further include:
First displacement sensor, for measuring the spool displacement amount of the first control valve；
Second displacement sensor, for measuring the spool displacement amount of the second control valve；With
Controller, for according to the measurement result of the first displacement sensor and second displacement sensor to the first control valve and
The spool displacement amount of second control valve is adjusted.
Optionally, multifunctional vehicle accessory control system further include:
First pressure sensor, for measuring the pressure on the first connection oil circuit between the first control valve and rodless cavity；
Second pressure sensor, for measuring the pressure on the second connection oil circuit between the second control valve and rod chamber；
With
Controller, for connecting oil circuit to first according to first pressure sensor and the measurement result of second pressure sensor
It is adjusted with the pressure on the second connection oil circuit.
Optionally, multifunctional vehicle accessory control system further include:
First overflow valve, the connection oil circuit connection between oil inlet and the first control valve and rodless cavity, oil outlet with
Oil return line connection；With
Second overflow valve, the connection oil circuit connection between oil inlet and the second control valve and rod chamber, oil outlet with
Oil return line connection.
Optionally, multifunctional vehicle accessory control system further include:
Variable pump；With
Load pressure feedback valve, the pressure feedback on oil feeding line for the oil outlet with variable pump to be connected to variable
The control terminal of pump, to realize the adjusting to the discharge capacity of variable pump according to the pressure fed back.
Optionally, load pressure feedback valve is proportional control valve, and the first hydraulic fluid port of load pressure feedback valve is connected to and becomes
On the oil feeding line of the oil outlet connection of amount pump, the second hydraulic fluid port of load pressure feedback valve and the control terminal of variable pump are connected, and are born
The third hydraulic fluid port for carrying pressure feedback valve is connect with oil return line, and the first hydraulic fluid port of load pressure feedback valve and load pressure feedback valve
The connection of the second hydraulic fluid port, when load pressure feedback valve is in the first working position, third hydraulic fluid port and the first hydraulic fluid port and the second hydraulic fluid port
Connection oil communication；When load pressure feedback valve is in the second working position, the truncation of third hydraulic fluid port.
Optionally, the connection oil between the first hydraulic fluid port of load pressure feedback valve and the second hydraulic fluid port of load pressure feedback valve
Road is equipped with restricting element.
Optionally, multifunctional vehicle accessory control system further include:
Third pilot control valve, for controlling the valve core movement of load pressure feedback valve.
Optionally, multifunctional vehicle accessory control system further include:
First pilot control valve, for controlling the valve core movement of the first control valve；With
Second pilot control valve, for controlling the valve core movement of the second control valve；
Wherein, the oil inlet of the first pilot control valve, the oil inlet of the second pilot control valve and third pilot control valve
Oil inlet is interconnected.
Optionally, multifunctional vehicle accessory control system further include:
Controller；With
Alarm system, for detecting that the actual flow of accessory executing agency and actual pressure are unsatisfactory for presetting in controller
Alarm signal is issued when condition.
Optionally, controller detects that the actual flow of accessory executing agency is Q, and accessory executing agency is required when working
Set flow as Q0, controller detects the actual pressure P of accessory executing agency, and accessory executing agency is required when working
Pressure P0 is set, preset condition includes:
Q=Q0, P > P0；Or
Q < Q0, P < P0；Or
Q>Q0。
To achieve the above object, the utility model additionally provides a kind of multifunctional vehicle, which is characterized in that including above-mentioned
Multifunctional vehicle accessory control system.
Based on the above-mentioned technical proposal, the utility model embodiment is equipped with the first control valve and the second control valve, both can be right
Flow and pressure into and out of the oil liquid of the rodless cavity of accessory executing agency are adjusted and control, and can hold into and out of accessory
The flow and pressure of the oil liquid of the rod chamber of row mechanism are adjusted and control, and allow it to adapt to different operation accessories,
Meet different operation accessories to the different demands of flow and pressure, simplifies the operating process after replacement operation accessory, improve
Accessory replaces efficiency.
Detailed description of the invention
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
The exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the improper of the utility model
It limits.In the accompanying drawings:
Fig. 1 is the hydraulic schematic diagram of the utility model multifunctional vehicle accessory control system one embodiment.
Fig. 2 is the schematic diagram of the utility model multifunctional vehicle accessory control system one embodiment.
Fig. 3 is the flow chart of the utility model multifunctional vehicle accessory control system one embodiment.
In figure:
1, fuel tank；2, variable pump；3, third pressure sensor；4, pressure reducing valve；5, the 4th pressure sensor；6, third overflow
Valve；7, the 5th pressure sensor；8, load pressure feedback valve；9, third displacement sensor；10, third pilot control valve；11,
One pilot control valve；12, the second pilot control valve；13, the first control valve；14, the second control valve；15, the first displacement sensor；
16, second displacement sensor；17, the first overflow valve；18, the second overflow valve；19, first pressure sensor；20, second pressure passes
Sensor；21, accessory executing agency.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, the technical solution in embodiment is carried out it is clear, complete
Ground description.Obviously, described embodiment is only a part of the embodiment of the utility model, instead of all the embodiments.
Based on the embodiments of the present invention, institute obtained by those of ordinary skill in the art without making creative efforts
There are other embodiments, fall within the protection scope of the utility model.
In the description of the present invention, it should be understood that term " center ", " transverse direction ", " longitudinal direction ", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For the limitation to scope of protection of the utility model.
As shown in Figure 1, in an illustrative examples of multifunctional vehicle accessory control system provided by the utility model
In, multifunctional vehicle includes a variety of accessory executing agencies 21 with different work function, multifunctional vehicle accessory control system
Including the first control valve 13 and the second control valve 14, the first control valve 13 is connect with the rodless cavity of accessory executing agency 21, is used for
Control enters rodless cavity and flows out the flow and pressure of the oil liquid of rodless cavity；Second control valve 14 has with accessory executing agency 21
Rod cavity connection, for controlling the flow and pressure that enter the oil liquid of rod chamber and outflow rod chamber.
In above-mentioned illustrative examples, by setting the first control valve 13 and the second control valve 14, both can into and out of
The flow and pressure of the oil liquid of the rodless cavity of accessory executing agency 21 are adjusted and control, and can execute into and out of accessory
The flow and pressure of the oil liquid of the rod chamber of mechanism 21 are adjusted and control, and allow it to adapt to different operation accessories,
Meet different operation accessories to the different demands of flow and pressure, simplifies the operating process after replacement operation accessory, improve
Accessory replaces efficiency.
Further, the first control valve 13 is proportional control valve, and the first hydraulic fluid port of the first control valve 13 is connect with rodless cavity,
Second hydraulic fluid port of the first control valve 13 is connect with oil sources, and the third hydraulic fluid port of the first control valve 13 is connect with oil return line, the first control
When valve 13 is in the first working position, the first hydraulic fluid port of the first control valve 13 is connected to the second hydraulic fluid port of the first control valve 13, and first
The third hydraulic fluid port of control valve 13 is truncated；When first control valve 13 is in the second working position, the first hydraulic fluid port of the first control valve 13 with
The third hydraulic fluid port of first control valve 13 is connected to, the second hydraulic fluid port truncation of the first control valve 13.
By adjusting the valve core movement of the first control valve 13, the adjustable rodless cavity into and out of accessory executing agency 21
Flow and pressure.When spool is moved from the second working position to the first working position, the flow into rodless cavity is gradually increased, when
When the opening of two hydraulic fluid ports reaches maximum, the flow into rodless cavity reaches maximum.It, can be with if necessary to carry out release to rodless cavity
By being gradually increased the opening of third hydraulic fluid port, the hydraulic oil of rodless cavity is made to flow back to fuel tank by oil return line.
Second control valve 14 is proportional control valve, and the first hydraulic fluid port of the second control valve 14 is connect with rod chamber, the second control
Second hydraulic fluid port of valve 14 is connect with oil sources, and the third hydraulic fluid port of the second control valve 14 is connect with oil return line, and the second control valve 14 is in
When the first working position, the first hydraulic fluid port of the second control valve 14 is connected to the second hydraulic fluid port of the second control valve 14, the second control valve 14
Third hydraulic fluid port truncation；When second control valve 14 is in the second working position, the first hydraulic fluid port of the second control valve 14 and the second control
The third hydraulic fluid port of valve 14 is connected to, the second hydraulic fluid port truncation of the second control valve 14.
By adjusting the valve core movement of the second control valve 14, the adjustable rod chamber into and out of accessory executing agency 21
Flow and pressure.When spool is moved from the second working position to the first working position, the flow into rod chamber is gradually increased, when
When the opening of two hydraulic fluid ports reaches maximum, the flow into rod chamber reaches maximum.It, can be with if necessary to carry out release to rod chamber
By being gradually increased the opening of third hydraulic fluid port, the hydraulic oil of rod chamber is made to flow back to fuel tank by oil return line.
Optionally, multifunctional vehicle accessory control system further includes the first pilot control valve 11 and the second pilot control valve
12, the first pilot control valve 11 is used to control the valve core movement of the first control valve 13, and the second pilot control valve 12 is for control the
The valve core movement of two control valves 14.
Further, multifunctional vehicle accessory control system further includes controller, the first pilot control valve 11 and/or second
Pilot control valve 12 is solenoid electric valve, and the valve core movement of the first pilot control valve 11 and/or the second pilot control valve 12 passes through
Controller is controlled.
Optionally, the oil inlet of the first pilot control valve 11 is connected to oil sources, and the first pilot control valve 11 and oil sources it
Between be equipped with pressure reducing valve 4；And/or second the oil inlet of pilot control valve 12 be connected to oil sources, and the second pilot control valve 12 and oil
Pressure reducing valve 4 is equipped between source.
By the way that pressure reducing valve 4 is arranged, the guide for being supplied to the first pilot control valve 11 and the second pilot control valve 12 can be made
The oil pressure of oil is more stable, improves the control precision and stability to the first control valve 13 and the second control valve 14.
Optionally, multifunctional vehicle accessory control system further includes the first displacement sensor 15, second displacement sensor 16
And controller, the first displacement sensor 15 are used to measure the spool displacement amount of the first control valve 13, second displacement sensor 16 is used
In the spool displacement amount for measuring the second control valve 14, controller is used for according to the first displacement sensor 15 and second displacement sensor
The spool displacement amount of the first control valve 13 and the second control valve 14 is adjusted in 16 measurement result.
Specifically, controller can be to actual displacement measured by the first displacement sensor 15 and second displacement sensor 16
It measures setting displacement required when working with accessory executing agency 21 to be compared, is measuring resulting actual displacement amount and setting
Determine displacement it is inconsistent when, controller can pass through the valve core movement to the first pilot control valve 11 and the second pilot control valve 12
Control adjust the spool displacement amount of the first control valve 13 and the second control valve 14.
Optionally, multifunctional vehicle accessory control system further includes first pressure sensor 19 and second pressure sensor
20, first pressure sensor 19 is used to measure the pressure on the first connection oil circuit between the first control valve 13 and rodless cavity, the
Two pressure sensors 20 are used to measure the pressure on the second connection oil circuit between the second control valve 14 and rod chamber.Controller is also
It can be used for according to first pressure sensor 19 and the measurement result of second pressure sensor 20 to the first connection oil circuit and second
Pressure on connection oil circuit is adjusted.
Specifically, controller can be to actual pressure measured by first pressure sensor 19 and second pressure sensor 20
Required setting pressure is compared when working with accessory executing agency 21, is measuring resulting actual pressure and setting pressure
When inconsistent, controller can by the control of the valve core movement to the first pilot control valve 11 and the second pilot control valve 12 come
The spool displacement amount of the first control valve 13 and the second control valve 14 is adjusted, and then adjusts the first connection oil circuit and the second connection oil circuit
On pressure.
Optionally, multifunctional vehicle accessory control system further includes the first overflow valve 17 and the second overflow valve 18, and first overflows
Flow valve 17 oil inlet and the first control valve 13 and rodless cavity between connection oil circuit connection, the oil outlet of the first overflow valve 17 with
Oil return line connection；Connection oil circuit connection between the oil inlet of second overflow valve 18 and the second control valve 14 and rod chamber, second
The oil outlet of overflow valve 18 is connect with oil return line.
Optionally, multifunctional vehicle accessory control system further includes variable pump 2 and load pressure feedback valve 8, load pressure
Feedback valve 8 for by the control terminal of the pressure feedback on the oil feeding line that be connected to the oil outlet of variable pump 2 to variable pump 2, with
The adjusting to the discharge capacity of variable pump 2 is realized according to the pressure fed back.
Optionally, load pressure feedback valve 8 be proportional control valve, the first hydraulic fluid port of load pressure feedback valve 8 be connected to
On the oil feeding line of the oil outlet connection of variable pump 2, the second hydraulic fluid port of load pressure feedback valve 8 and the control terminal of variable pump 2 connect
It connects, the third hydraulic fluid port of load pressure feedback valve 8 is connect with oil return line, and the first hydraulic fluid port of load pressure feedback valve 8 and load are pressed
Second hydraulic fluid port of force feedback valve 8 is connected to, when load pressure feedback valve 8 is in the first working position, the third of load pressure feedback valve 8
The connection oil communication of second hydraulic fluid port of the first hydraulic fluid port and load pressure feedback valve 8 of hydraulic fluid port and load pressure feedback valve 8；Load
When pressure feedback valve 8 is in the second working position, the third hydraulic fluid port of load pressure feedback valve 8 is truncated.
Further, the company between the first hydraulic fluid port of load pressure feedback valve 8 and the second hydraulic fluid port of load pressure feedback valve 8
Oil circuit is connect equipped with restricting element.By the way that restricting element is arranged, the pressure for supplying the hydraulic oil of the control terminal of variable pump 2 can be made
It is more stable, improve the precision and stability of control.
Optionally, multifunctional vehicle accessory control system further includes third pilot control valve 10, third pilot control valve 10
For controlling the valve core movement of load pressure feedback valve 8.
Optionally, the oil inlet of the first pilot control valve 11, the oil inlet of the second pilot control valve 12 and third guide control
The oil inlet of valve 10 processed is interconnected.That is, the first pilot control valve 11, the second pilot control valve 12 and third pilot control valve 10
Pilot oil source source it is identical, be conducive to improve the consistency and stability to pilot control.
Optionally, multifunctional vehicle accessory control system further includes alarm system, and alarm system is used to detect in controller
Alarm signal is issued when being unsatisfactory for preset condition to the actual flow and actual pressure of accessory executing agency 21.
Further, controller detects that the actual flow of accessory executing agency 21 is Q, when accessory executing agency 21 works
Required sets flow as Q0, and controller detects the actual pressure P of accessory executing agency 21, and accessory executing agency 21 works
When required setting pressure P0, preset condition includes:
Q=Q0, P > P0；Or
Q < Q0, P < P0；Or
Q>Q0。
When actual flow Q is equal to setting flow Q0, if actual pressure P is less than or equal to setting pressure P0, then it is assumed that be
Nominal situation；And if actual pressure P is greater than setting pressure P0, for unusual service condition, control system breaks down, alarm system hair
Alarm signal out, until trouble shooting.
When actual flow Q is less than setting flow Q0, it may be possible to cause because oil circuit pressure is excessively high, it is practical at this time
It is all nominal situation that pressure P, which is greater than or equal to setting pressure P0,；And if actual pressure P is less than setting pressure P0, belongs to exception
Operating condition, control system break down, and alarm system issues alarm signal, until trouble shooting.
And when actual flow Q is greater than setting flow Q0, the size regardless of actual pressure P and setting pressure P0, all
Will be considered that it is that control system breaks down, alarm system issues alarm signal, until trouble shooting, to guarantee accessory executing agency
Flow do not exceed setting value.
Wherein, the actual flow Q for flowing through the first control valve 13 and the second control valve 14 can be according to the first displacement sensor
15 and the measured value of second displacement sensor 16 calculated by formula, specific calculation formula isWherein, C
For constant；A is the opening area of spool.
Based on above-mentioned multifunctional vehicle accessory control system, the utility model also proposes a kind of multifunctional vehicle, this is more
Function vehicle includes above-mentioned multifunctional vehicle accessory control system.
Multifunctional vehicle includes a variety of operation accessories that can be realized different work function, when multifunctional vehicle accessory controls
When the accessory executing agency of hydraulic fluid port A and hydraulic fluid port B access different work accessory in system, system is controlled by multifunctional vehicle accessory
The flow and pressure for adjusting to being adapted to property of system accessory executing agency, meet the different demands of operation accessory, simplify replacement and make
Operating process after industry accessory improves replacement efficiency.
Multifunctional vehicle can be the mechanical equipments such as Multifunctional rescue vehicle.
Positive technical effect possessed by multifunctional vehicle accessory control system is equally applicable in above-mentioned each embodiment
Multifunctional vehicle, which is not described herein again.
One of 1~3 pair of the utility model multifunctional vehicle accessory control system and multifunctional vehicle with reference to the accompanying drawing
The hydraulic principle and the course of work of embodiment are described in detail:
As shown in Figure 1, in this embodiment, multifunctional vehicle accessory control system includes fuel tank 1, variable pump 2, third pressure
Force snesor 3, pressure reducing valve 4, the 4th pressure sensor 5, third overflow valve 6, the 5th pressure sensor 7, load pressure feedback valve
8, third displacement sensor 9, third pilot control valve 10, the first pilot control valve 11, the control of the second pilot control valve 12, first
Valve 13, the second control valve 14, the first displacement sensor 15, second displacement sensor 16, the first overflow valve 17, the second overflow valve
18, first pressure sensor 19, second pressure sensor 20, accessory executing agency 21.
Wherein, fuel tank 1 not only supplies hydraulic oil as the oil sources of system, but also is connected to the oil return line of system, so that each hydraulic
Fuel tank 1 is flowed back in the oil return of element.The oil outlet of variable pump 2 respectively with pressure reducing valve 4, the 5th pressure sensor 7, load pressure feedback
Valve 8, the first control valve 13, the connection of the second control valve 14.
Load pressure feedback valve 8 is two-position three-way proportional valve, and the first hydraulic fluid port of load pressure feedback valve 8 is connected to and variable
On the oil feeding line of the oil outlet connection of pump 2, the second hydraulic fluid port of load pressure feedback valve 8 is connect with the control terminal of variable pump 2, is born
It carries and is connected with third pressure sensor 3 on the second hydraulic fluid port of pressure feedback valve 8 and the connection oil circuit of the control terminal of variable pump 2, bear
The third hydraulic fluid port for carrying pressure feedback valve 8 is connect with fuel tank 1, and the first hydraulic fluid port and load pressure feedback of load pressure feedback valve 8
Second hydraulic fluid port of valve 8 is connected to.When load pressure feedback valve 8 is in the first working position, third hydraulic fluid port and the first hydraulic fluid port and the second oil
Connection oil communication between mouthful, i.e. third hydraulic fluid port are connected to the first hydraulic fluid port, are also connected to the second hydraulic fluid port；Load pressure feedback valve
8 be in the second working position when, third hydraulic fluid port truncation.Third displacement sensor 9 is integrated in load pressure feedback valve 8.Load pressure
Third overflow valve 6 is additionally provided between the connection oil circuit and fuel tank 1 of the control terminal of the second hydraulic fluid port and variable pump 2 of force feedback valve 8.
The oil inlet of pressure reducing valve 4 is connected to the oil outlet of variable pump 2, and the oil outlet of pressure reducing valve 4 is controlled with third guide respectively
Valve 10 processed, the first pilot control valve 11 are connected to the second pilot control valve 12, and the spring cavity of pressure reducing valve 4 is connected to fuel tank 1.Oil return
Road is equipped with the 4th pressure sensor 5.
Third pilot control valve 10 be 3-position 4-way proportion magnetic valve, the first actuator port of third pilot control valve 10 with
First control terminal of load pressure feedback valve 8 is connected to, the second actuator port and load pressure feedback of third pilot control valve 10
Second control terminal of valve 8 is connected to, and the oil inlet of third pilot control valve 10 is connected to the oil outlet of pressure reducing valve 4, third guide control
The oil return opening of valve 10 processed is connected to fuel tank 1.When third pilot control valve 10 is in the first working position, the first actuator port with into
Hydraulic fluid port connection, the second actuator port are connected to the return port；When third pilot control valve 10 is in the second working position, the first work
Hydraulic fluid port is connected to the return port, and the second actuator port is connected to oil inlet；When third pilot control valve 10 is in middle position, the first work
Make hydraulic fluid port and the second actuator port is connected to the return port, oil inlet truncation.The control terminal of third pilot control valve 10 can be by electricity
Control system is controlled.
First pilot control valve 11 be 3-position 4-way proportion magnetic valve, the first actuator port of the first pilot control valve 11 with
First control terminal of the first control valve 13 is connected to, and the of the second actuator port of the first pilot control valve 11 and the first control valve 13
The connection of two control terminals, the oil inlet of the first pilot control valve 11 are connected to the oil outlet of pressure reducing valve 4, the first pilot control valve 11
Oil return opening is connected to fuel tank 1.When the first pilot control valve 11 is in the first working position, the first actuator port and oil inlet connect
Logical, the second actuator port is connected to the return port；When the first pilot control valve 11 is in the second working position, the first actuator port with
Oil return opening connection, the second actuator port are connected to oil inlet；When the first pilot control valve 11 is in middle position, the first actuator port
It is connected to the return port with the second actuator port, oil inlet truncation.The control terminal of first pilot control valve 11 can be by electric-control system
It is controlled.
Second pilot control valve 12 be 3-position 4-way proportion magnetic valve, the first actuator port of the second pilot control valve 12 with
First control terminal of the second control valve 14 is connected to, and the of the second actuator port of the second pilot control valve 12 and the second control valve 14
The connection of two control terminals, the oil inlet of the second pilot control valve 12 are connected to the oil outlet of pressure reducing valve 4, the second pilot control valve 12
Oil return opening is connected to fuel tank 1.When the second pilot control valve 12 is in the first working position, the first actuator port and oil inlet connect
Logical, the second actuator port is connected to the return port；When the second pilot control valve 12 is in the second working position, the first actuator port with
Oil return opening connection, the second actuator port are connected to oil inlet；When the second pilot control valve 12 is in middle position, the first actuator port
It is connected to the return port with the second actuator port, oil inlet truncation.The control terminal of second pilot control valve 12 can be by electric-control system
It is controlled.
First control valve 13 is 3-position-3-way proportional control valve, the first hydraulic fluid port of the first control valve 13 and accessory executing agency
21 rodless cavity connection, the second hydraulic fluid port of the first control valve 13 are connect with oil sources, the third hydraulic fluid port of the first control valve 13 and oil return
Road connection.When first control valve 13 is in the first working position, the of the first hydraulic fluid port of the first control valve 13 and the first control valve 13
The connection of two hydraulic fluid ports, the third hydraulic fluid port truncation of the first control valve 13；When first control valve 13 is in the second working position, the first control valve
13 the first hydraulic fluid port is connected to the third hydraulic fluid port of the first control valve 13, the second hydraulic fluid port truncation of the first control valve 13；First control
When valve 13 is in middle position, the first hydraulic fluid port, the second hydraulic fluid port and third hydraulic fluid port are truncated.First displacement sensor 15 is integrated in first
In control valve 13.
Second control valve 14 is 3-position-3-way proportional control valve, the first hydraulic fluid port of the second control valve 14 and accessory executing agency
21 rod chamber connection, the second hydraulic fluid port of the second control valve 14 are connect with oil sources, the third hydraulic fluid port of the second control valve 14 and oil return
Road connection.When second control valve 14 is in the first working position, the of the first hydraulic fluid port of the second control valve 14 and the second control valve 14
The connection of two hydraulic fluid ports, the third hydraulic fluid port truncation of the second control valve 14；When second control valve 14 is in the second working position, the second control valve
14 the first hydraulic fluid port is connected to the third hydraulic fluid port of the second control valve 14, the second hydraulic fluid port truncation of the second control valve 14；Second control
When valve 14 is in middle position, the first hydraulic fluid port, the second hydraulic fluid port and third hydraulic fluid port are truncated.Second displacement sensor 16 is integrated in second
In control valve 14.
Connection oil circuit between first hydraulic fluid port of the first control valve 13 and the rodless cavity of accessory executing agency 21 is equipped with the
One pressure sensor 19, on the connection oil circuit between the first hydraulic fluid port of the second control valve 14 and the rod chamber of accessory executing agency 21
Equipped with second pressure sensor 20.
Connection oil circuit between first hydraulic fluid port of the first control valve 13 and the rodless cavity of accessory executing agency 21 and fuel tank 1 it
Between be equipped with the first overflow valve 17, between the first hydraulic fluid port of the second control valve 14 and the rod chamber of accessory executing agency 21 connection oil
The second overflow valve 18 is equipped between road and fuel tank 1.
Operating process: as shown in Fig. 2, according to operational requirements (such as cast-cutting saw, log grapple, hydraulic shear, quartering hammer), operation
After panel receives the operational order of user's input, control signal is issued, is integrated in multifunctional vehicle accessory control system
Controller receives control signal, and each Hydraulic Elements is driven to act, and output hydraulic pressure oil to accessory executing agency 21 is completed relatively
The movement answered.Different accessories (such as cast-cutting saw, log grapple, hydraulic shear, quartering hammer) are under the pressure of setting and flow parameter
Work, the numeric feedback that the pressure sensor and displacement sensor being integrated in system will test to controller form closed loop control
System, while can also judge whether system breaks down according to the numerical value detected.
Specifically, as shown in figure 3, after operation accessory installs, multifunctional vehicle operation panel is equipped with START button,
After user clicks START button, into " type of selection operation accessory " interface.When controller is not received by control signal
When, the spool of the first pilot control valve 11 and the second pilot control valve 12 is in middle position, the first control valve 13 and the second control
Valve 14 is also at middle position, and accessory executing agency 21 circulates without hydraulic oil, and accessory executing agency 21 does not act, at this time control system
System is in low pressure armed state.When being used to select accessory type, after controller receives control signal, electric signal is issued, the
One pilot control valve 11 and the second pilot control valve 12 export first pilot corresponding with electric signal under the action of electric signal
Power is to the control terminal of the first control valve 13 and the second control valve 14, and the first control valve 13 and the second control valve 14 are in corresponding guide
Under the action of pressure, spool is opened to corresponding size, reaches the requirement of pressure and flow control, while being integrated in the first control
The first displacement sensor 15, second displacement sensor 16,19 and of first pressure sensor in valve 13 processed and the second control valve 14
The signal that second pressure sensor 20 will test feeds back to controller, and controller is according to the pressure and flow signal of feedback to
One pilot control valve 11 and the second pilot control valve 12 carry out correction control, form close loop control circuit, make accessory executing agency
21 accurately work according to the pressure of setting and flow parameter.
In addition, work as Q=Q0, when P > P0 or Q < Q0, P < P0 or Q > Q0, control system can also carry out automatic alarm,
Fault warning is issued, until trouble shooting.
By the explanation to the utility model multifunctional vehicle accessory control system and multiple embodiments of multifunctional vehicle,
It can be seen that the utility model multifunctional vehicle accessory control system and multifunctional vehicle embodiment at least have it is following a kind of or
A variety of advantages:
1, by the first control valve of setting and the second control valve, control stream can be reached by the opening size of control valve core
The purpose of amount can also shunt direct oil return box in the intake section of spool, to reach pressure control if pressure is more than setting value
The purpose of system realizes the pressure of different work accessory and the automatic adjustment of flow, improves the suitability to different work accessory, nothing
Hardware facility need to additionally be increased or manually adjusted, accessory switch speed is fast, simple to operate；
2, pressure reducing valve is equipped between pilot control valve and oil sources, it is ensured that the stability of guide's oil pressure；
3, it is integrated with displacement sensor and pressure sensor in control system, flow and pressure can be supervised in real time
It surveys, and flow and pressure is adjusted in real time according to detected value；
4, control system is equipped with alarm system, can alarm unusual service condition.
Finally it should be noted that: above embodiments are only to illustrate the technical solution of the utility model rather than limit it
System；Although the utility model has been described in detail with reference to the preferred embodiment, those of ordinary skill in the art should
Understand: specific implementation of the utility model can still be modified or is equally replaced to some technical characteristics
It changes；Without departing from the spirit of technical solutions of the utility model, should all cover in the claimed technical solution of the utility model
In range.
Claims (15)
1. a kind of multifunctional vehicle accessory control system, multifunctional vehicle includes that a variety of accessories with different work function execute
Mechanism (21) characterized by comprising
First control valve (13) is connect with the rodless cavity of the accessory executing agency (21), enters the rodless cavity for controlling
With the flow and pressure of the oil liquid for flowing out the rodless cavity；With
Second control valve (14) is connect with the rod chamber of the accessory executing agency (21), enters the rod chamber for controlling
With the flow and pressure of the oil liquid for flowing out the rod chamber.
2. multifunctional vehicle accessory control system according to claim 1, which is characterized in that first control valve (13)
The first hydraulic fluid port for proportional control valve, first control valve (13) is connect with the rodless cavity, first control valve (13)
The second hydraulic fluid port connect with oil sources, the third hydraulic fluid port of first control valve (13) is connect with oil return line, first control valve
(13) when being in the first working position, first hydraulic fluid port is connected to second hydraulic fluid port, the third hydraulic fluid port truncation；Described
When one control valve (13) is in the second working position, first hydraulic fluid port is connected to the third hydraulic fluid port, and second hydraulic fluid port is cut
It is disconnected；And/or
Second control valve (14) is proportional control valve, and the first hydraulic fluid port and the rod chamber of second control valve (14) connect
It connects, the second hydraulic fluid port of second control valve (14) is connect with oil sources, the third hydraulic fluid port of second control valve (14) and oil return
Road connection, when second control valve (14) is in the first working position, first hydraulic fluid port is connected to second hydraulic fluid port, institute
State the truncation of third hydraulic fluid port；When second control valve (14) is in the second working position, first hydraulic fluid port and third oil
Mouth connection, the second hydraulic fluid port truncation.
3. multifunctional vehicle accessory control system according to claim 1, which is characterized in that further include:
First pilot control valve (11), for controlling the valve core movement of first control valve (13)；With
Second pilot control valve (12), for controlling the valve core movement of second control valve (14).
4. multifunctional vehicle accessory control system according to claim 3, which is characterized in that it further include controller, it is described
First pilot control valve (11) and/or second pilot control valve (12) are solenoid electric valve, first pilot control valve
(11) and/or the valve core movement of second pilot control valve (12) is controlled by the controller.
5. multifunctional vehicle accessory control system according to claim 3, which is characterized in that first pilot control valve
(11) oil inlet is connected to oil sources, and is equipped with pressure reducing valve (4) between first pilot control valve (11) and the oil sources；
And/or the oil inlet of second pilot control valve (12) is connected to oil sources, and second pilot control valve (12) with it is described
Pressure reducing valve (4) are equipped between oil sources.
6. multifunctional vehicle accessory control system according to claim 1, which is characterized in that further include:
First displacement sensor (15), for measuring the spool displacement amount of first control valve (13)；
Second displacement sensor (16), for measuring the spool displacement amount of second control valve (14)；With
Controller, for the measurement result pair according to first displacement sensor (15) and the second displacement sensor (16)
The spool displacement amount of first control valve (13) and second control valve (14) is adjusted.
7. multifunctional vehicle accessory control system according to claim 1, which is characterized in that further include:
First pressure sensor (19) connect oil for measuring first between first control valve (13) and the rodless cavity
The pressure of road；
Second pressure sensor (20) connect oil for measuring second between second control valve (14) and the rod chamber
The pressure of road；With
Controller, for the measurement result pair according to the first pressure sensor (19) and the second pressure sensor (20)
Pressure on the first connection oil circuit and the second connection oil circuit is adjusted.
8. multifunctional vehicle accessory control system according to claim 1, which is characterized in that further include:
First overflow valve (17), the connection oil circuit between oil inlet and first control valve (13) and the rodless cavity connect
It connects, oil outlet is connect with oil return line；With
Second overflow valve (18), the connection oil circuit between oil inlet and second control valve (14) and the rod chamber connect
It connects, oil outlet is connect with oil return line.
9. multifunctional vehicle accessory control system according to claim 1, which is characterized in that further include:
Variable pump (2)；With
Load pressure feedback valve (8), the pressure feedback on oil feeding line for being used to be connected to the oil outlet of the variable pump (2)
To the control terminal of the variable pump (2), to realize the adjusting to the discharge capacity of the variable pump (2) according to the pressure fed back.
10. multifunctional vehicle accessory control system according to claim 9, which is characterized in that the load pressure feedback
Valve (8) is proportional control valve, and the first hydraulic fluid port of the load pressure feedback valve (8) is connected to fuel-displaced with the variable pump (2)
On the oil feeding line of mouth connection, the second hydraulic fluid port of the load pressure feedback valve (8) and the control terminal of the variable pump (2) connect
It connects, the third hydraulic fluid port of the load pressure feedback valve (8) is connect with oil return line, and the first of the load pressure feedback valve (8)
Hydraulic fluid port is connected to the second hydraulic fluid port of the load pressure feedback valve (8), and the load pressure feedback valve (8) is in the first working position
When, the connection oil communication of the third hydraulic fluid port and first hydraulic fluid port and second hydraulic fluid port；The load pressure feedback
When valve (8) is in the second working position, the third hydraulic fluid port truncation.
11. multifunctional vehicle accessory control system according to claim 10, which is characterized in that the load pressure feedback
Connection oil circuit between first hydraulic fluid port of valve (8) and the second hydraulic fluid port of the load pressure feedback valve (8) is equipped with restricting element.
12. multifunctional vehicle accessory control system according to claim 9, which is characterized in that further include:
Third pilot control valve (10), for controlling the valve core movement of the load pressure feedback valve (8).
13. multifunctional vehicle accessory control system according to claim 12, which is characterized in that further include:
First pilot control valve (11), for controlling the valve core movement of first control valve (13)；With
Second pilot control valve (12), for controlling the valve core movement of second control valve (14)；
Wherein, the oil inlet of first pilot control valve (11), the oil inlet of second pilot control valve (12) and described
The oil inlet of third pilot control valve (10) is interconnected.
14. multifunctional vehicle accessory control system according to claim 1, which is characterized in that further include:
Controller；With
Alarm system, actual flow and actual pressure for detecting the accessory executing agency (21) in the controller are not
Alarm signal is issued when meeting preset condition.
15. a kind of multifunctional vehicle, which is characterized in that including the described in any item multifunctional vehicle categories of such as claim 1~14
Has control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821193449.4U CN209146024U (en) | 2018-07-26 | 2018-07-26 | Multifunctional vehicle accessory control system and multifunctional vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821193449.4U CN209146024U (en) | 2018-07-26 | 2018-07-26 | Multifunctional vehicle accessory control system and multifunctional vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN209146024U true CN209146024U (en) | 2019-07-23 |
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ID=67264337
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| Country | Link |
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| CN (1) | CN209146024U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108716492A (en) * | 2018-07-26 | 2018-10-30 | 徐工集团工程机械有限公司 | Multifunctional vehicle accessory control system and multifunctional vehicle |
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2018
- 2018-07-26 CN CN201821193449.4U patent/CN209146024U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108716492A (en) * | 2018-07-26 | 2018-10-30 | 徐工集团工程机械有限公司 | Multifunctional vehicle accessory control system and multifunctional vehicle |
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Effective date of registration: 20220727 Address after: 221004 26 Tuo Lan Shan Road, Xuzhou economic and Technological Development Zone, Jiangsu Patentee after: JIANGSU XUGONG ENGINEERING MACHINERY RESEARCH INSTITUTE Co.,Ltd. Address before: 221004 26 Tuo Lan Shan Road, Xuzhou economic and Technological Development Zone, Jiangsu Patentee before: XCMG CONSTRUCTION MACHINERY Co.,Ltd. |