CN105508329B - Pumps hydraulic control system and concrete pumping equipment - Google Patents
Pumps hydraulic control system and concrete pumping equipment Download PDFInfo
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- CN105508329B CN105508329B CN201410489847.0A CN201410489847A CN105508329B CN 105508329 B CN105508329 B CN 105508329B CN 201410489847 A CN201410489847 A CN 201410489847A CN 105508329 B CN105508329 B CN 105508329B
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Abstract
The invention discloses a kind of pumps hydraulic control system and concrete pumping equipment, it is easy to that concrete piston is changed and repaired, improves the operating efficiency of concrete pumping equipment.Wherein pumps hydraulic control system includes：Concrete piston hydraulic pressure controls oil circuit and buffering oil circuit, and concrete piston hydraulic pressure control oil circuit includes two oil cylinders, controls the control oil circuit of two cylinder efficients, and each oil cylinder includes：Cylinder body, the limiting piston being arranged in cylinder body, limiting piston bar, pumping piston and pumping piston bar, wherein：Cylinder body is divided into three chambers by limiting piston and pumping piston；Buffering oil circuit includes：One the first control valve and with the one-to-one connecting pipeline of each oil cylinder；Each connecting pipeline is connected with the first control valve, when the first control valve is in first state, first control valve controls the second chamber and the 3rd chamber of each oil cylinder logical, and when the first control valve is in the second state, the first control valve controls the second chamber and the 3rd chamber of each oil cylinder to disconnect.
Description
Technical field
The present invention relates to technical field of engineering machinery, more particularly to a kind of pumps hydraulic control system and concrete pumping are set
It is standby.
Background technology
In concrete pumping equipment, concrete piston belongs to easily worn part, it is necessary to often change.Concrete piston is during due to work
In concrete cylinder, change when must by concrete piston from concrete cylinder be retracted into water tank in can be dismantled, changed and be repaired.
Speed is changed to improve, concrete mixer typically carries pumps hydraulic control system.As shown in figure 1, Fig. 1 is existing
Pumps hydraulic control system principle schematic in technology, the pumps hydraulic control system includes：Concrete piston hydraulic pressure controls oil circuit
With buffering oil circuit, wherein concrete piston hydraulic pressure control oil circuit includes：The control oil that two oil cylinders 03, two oil cylinders 03 of control work
Road, wherein control oil circuit includes：External hydraulic oil oil circuit 01, solenoid directional control valve 02, each oil cylinder 03 includes：Limiting piston 041,
Limiting piston bar 042, pumping piston 051, pumping piston bar 052, wherein：Two oil cylinders 03 by solenoid directional control valve 02 respectively with
External hydraulic oil oil circuit 01 is connected, and the end of limiting piston bar 041 is connected with pumping piston 051, the end of pumping piston bar 052
Connected with concrete piston, 03 point of oil cylinder is where three chambers, limiting piston bar 042 by limiting piston 041 and pumping piston 051
Chamber is that chamber where second chamber 032, pumping piston bar 052 is that the 3rd chamber 033, another chamber are first chamber
031, buffering oil circuit includes：Two U-tubes 06 and the stop valve 07 and check valve 08 being arranged on each U-tube 06, each
The second chamber 032 of one end of U-tube 06 and corresponding oil cylinder 03 is logical, the 3rd chamber 033 of the other end and corresponding oil cylinder 03
Connection, when stop valve 07 is in the conduction state, the second chamber 032 of oil cylinder 03 is connected with the 3rd chamber 033, pumping piston work
When making, the setting of U-tube 06 can play adjustment piston stroke and buffering to prevent from impacting excessive effect during commutation.
When needing pumping, concrete piston needs to be located in concrete cylinder, is first turned on the U-tube 06 that two oil cylinders 03 are respectively equipped with
On stop valve 07, the left position of electrical system control solenoid directional control valve 02 work, now in the first chamber 031 of two oil cylinders 03
Pressure oil is provided by external hydraulic oil oil circuit 01, and promotes limiting piston 041 to stretch out, when pumping piston 051 is to first chamber
When 031 direction is moved to certain position, is limited piston rod 042 and withstands, prevent pumping piston 051 and pumping piston bar 052 from
Moved again to first chamber 031, therefore concrete piston will not be retracted into water tank.
When needing quick-replaceable concrete piston, the stop valve on the U-tube 06 that two oil cylinders 03 are respectively equipped with is first shut off
07, quick change piston knob is opened, electrical system control solenoid directional control valve 02 obtains electric right position work, now the right position of solenoid directional control valve 02
Work, the first chamber 031 of described two oil cylinders 03 connects external hydraulic oil oil circuit 01 by solenoid directional control valve 02, can be to two
Pressure oil in the first chamber 031 of individual oil cylinder 03 carries out release.When pumping piston bar 051 is moved to the direction of first chamber 031
When, limiting piston bar 042 promotes limiting piston 041 to retract, so that pumping piston 051 can continue with pumping piston bar 052
Moved to the direction of first chamber 031.Therefore concrete piston can be retracted into water tank, facilitate operating personnel concrete piston is repaired or
Change.
Said pump liquor charging pressure control system, when changing or repairing concrete piston, it is necessary to operate the U that two oil cylinders are respectively equipped with
The unlatching of stop valve 07 on shape pipe 06, and solenoid directional control valve 02 obtain dead electricity situation, and operating procedure is more, it is impossible to while realizing two
The interlocking of individual oil cylinder, and maloperation is easily produced because of situations such as forgetting, concrete casting quality and pumping equipment are caused very
Big influence, while the security threat certain to after-sales service personnel component.
The content of the invention
Set the invention provides a kind of pumps hydraulic control system and the concrete pumping for possessing pumping cylinder buffer function
It is standby, it is easy to that concrete piston is changed and repaired, processing safety is higher, while realizing buffering reversing impact when pumping commutation
With the function of regulating piston stroke, the operating efficiency and service life of concrete pumping equipment are improved.
To reach above-mentioned purpose, the present invention provides following technical scheme.
The invention provides a kind of pumps hydraulic control system, including：Concrete piston hydraulic pressure controls oil circuit and buffering oil circuit；Its
In：
Concrete piston hydraulic pressure control oil circuit includes：Two oil cylinders, the control oil circuits of two cylinder efficients of control, each oil cylinder bag
Include：Cylinder body, the limiting piston being arranged in the cylinder body, limiting piston bar, pumping piston and pumping piston bar, wherein：It is described
The cylinder body is divided into three chambers by limiting piston and the pumping piston, and the chamber where the limiting piston bar is the second chamber
Chamber where room, the pumping piston bar is that the 3rd chamber, another chamber are first chamber, and the limiting piston bar
End is connected with pumping piston, and the end of the pumping piston bar is connected with concrete piston；
Buffering oil circuit includes：One the first control valve and with the one-to-one connecting pipeline of each oil cylinder；Every a pair mutual
In corresponding connecting pipeline and oil cylinder：One end of the connecting pipeline is connected with the second chamber of oil cylinder, the other end and oil cylinder
3rd chamber；
Each connecting pipeline is connected with first control valve, when first control valve is in first state
When, first control valve controls second chamber and the conducting of the 3rd chamber of each oil cylinder, when first control valve is in the
During two-state, first control valve controls the second chamber and the 3rd chamber of each oil cylinder to disconnect.
The pumps hydraulic control system that the present invention is provided, when applying in concrete pumping equipment, when needing pumping, concrete
Piston needs to be located in concrete cylinder, is first turned on the first control valve so that the second chamber of each oil cylinder and the conducting of the 3rd chamber (can
Impulsive force excessive effect during playing regulating piston stroke and buffering to prevent from commutating), control oil circuit is in the first work shape
State, now the pressure oil in the first chamber of two oil cylinders is by controlling oil circuit to provide, and promotes limiting piston to stretch out, and works as pumping
Piston to first chamber direction move when, limiting piston bar is limited piston and withstood, prevent pumping piston and pumping piston bar from
Moved again to first chamber, therefore concrete piston will not be retracted into water tank；When needing quick-replaceable concrete piston, the first control is first shut off
Valve processed so that the second chamber and the 3rd chamber of each oil cylinder are simultaneously switched off, and control oil circuit is in the second working condition, two oil
Pressure oil in the first chamber of cylinder starts unloading, and when pumping piston bar is moved to first chamber direction, limiting piston bar is pushed away
Dynamic limiting piston is retracted, so that pumping piston can continue to move to first chamber direction with pumping piston bar.Therefore concrete is lived
Plug can be retracted into water tank, facilitate operating personnel that concrete piston is repaired or replaced.
It can be seen that, during aforesaid operations, as long as first control valve of operation, you can to realize second to each oil cylinder
The control for connecting and disconnecting while chamber and three chambers, saves operating procedure.So, the pumps hydraulic that the present invention is provided
Control system, is easy to that concrete piston is changed and repaired, processing safety is higher, while realizing that buffering is changed when pumping commutation
To impact and the function of regulating piston stroke, the operating efficiency and service life of concrete pumping equipment are improved.
In some optional embodiments, first control valve at least includes：First actuator port, the second working oil
Mouth, the 3rd actuator port and the 4th actuator port, each connecting pipeline included for two communicating pipes, wherein：One company
One end of the first communicating pipe in two communicating pipe on siphunculus road and the 3rd chamber of corresponding oil cylinder, the other end with it is described
The first actuator port connection of first control valve, one end of the second communicating pipe is connected with the second chamber of corresponding oil cylinder, another
End is connected with the second actuator port of first control valve；The 3rd in two communicating pipe of another connecting pipeline connects
One end of siphunculus and the 3rd chamber of corresponding oil cylinder, the other end and the 3rd actuator port of first control valve connect
Logical, one end of the 4th communicating pipe is connected with the second chamber of corresponding oil cylinder, the other end and the 4th work of first control valve
Make hydraulic fluid port connection；
When first control valve is in first state, the first actuator port and the connection of the second actuator port, the 3rd work
Make hydraulic fluid port and the connection of the 4th actuator port, the second chamber of each oil cylinder and the conducting of the 3rd chamber, at first control valve
When the second state, do not connect between the first actuator port, the second actuator port, the 3rd actuator port and the 4th actuator port
Logical, the second chamber of each oil cylinder and the 3rd chamber disconnect.
In some optional embodiments, first control valve is the first four way ball valve, first four way ball valve
Including four actuator ports, it is respectively：First actuator port, the second actuator port, the 3rd actuator port and the 4th actuator port,
One end of first communicating pipe and the 3rd chamber of corresponding oil cylinder, the other end and the first of first four way ball valve
Actuator port is connected, and one end of the second communicating pipe is connected with the second chamber of corresponding oil cylinder, the other end and first four-way
The second actuator port connection of ball valve；One end of the third connecting pipe and the 3rd chamber of corresponding oil cylinder, the other end
Connected with the 3rd actuator port of first four way ball valve, one end of the 4th communicating pipe connects with the second chamber of corresponding oil cylinder
Logical, the other end is connected with the 4th actuator port of first four way ball valve；
When first four way ball valve is in first state, the first actuator port and the connection of the second actuator port, the 3rd
Actuator port and the connection of the 4th actuator port, the second chamber of each oil cylinder and the conducting of the 3rd chamber, when the first four-way ball
When valve is in the second state, between the first actuator port, the second actuator port, the 3rd actuator port and the 4th actuator port
Do not connect, the second chamber of each oil cylinder and the 3rd chamber disconnect.
It is unidirectional that one is respectively equipped with some optional embodiments, on first communicating pipe and the third connecting pipe
Valve, and the 3rd chamber of oil-out and the corresponding oil cylinder of each check valve, the of oil inlet and corresponding oil cylinder
Two chambers.
In some optional embodiments, the control oil circuit includes：Fuel tank, external hydraulic oil oil circuit and the second control
Valve processed；First actuator port of second control valve is connected with the oil-out of the external hydraulic oil oil circuit, the second work
Hydraulic fluid port is connected with the first chamber of described two oil cylinders, and the 3rd actuator port is connected with the fuel tank；At second control valve
When first state, the first actuator port and the connection of the second actuator port, when second control valve is in the second state, second
Actuator port and the connection of the 3rd actuator port.When the second control valve is in the first working condition, external hydraulic oil oil circuit can
Think the first chamber fuel feeding of two oil cylinders, the setting of connecting pipeline can cause external hydraulic oil oil circuit and two oil again
3rd chamber of cylinder supplements fluid for it, so as to promote limiting piston, limiting piston bar, pumping piston and pumping piston bar
Move right；When the second control valve is in the second working condition, the oil in two oil cylinder first chambers can flow back to fuel tank, i.e.,
The first chamber of two oil cylinders is connected with fuel tank, then the fluid off-load oil return box in the 3rd chamber, then limiting piston, spacing
Piston rod, pumping piston and pumping piston bar are moved to the left therewith.
In some optional embodiments, first control valve is interstage valve with second control valve.I.e. can be with
By an operation handle, while controlling two valves.
In some optional embodiments, second control valve is tee ball valve, the first work of the tee ball valve
The oil-out for making hydraulic fluid port with the external hydraulic oil oil circuit is connected, and the first chamber of the second actuator port and two oil cylinders connects
Logical, the 3rd actuator port is connected with the fuel tank；When the tee ball valve is in first state, the first actuator port and the second work
Make hydraulic fluid port connection, when the tee ball valve is in the second state, the second actuator port and the connection of the 3rd actuator port.Work as three-way ball
When valve is in the first working condition, external hydraulic oil oil circuit can for two oil cylinders the first chamber fuel feeding, connecting pipeline sets
Put, the 3rd chamber of external hydraulic oil oil circuit and two oil cylinders can be caused to supplement fluid for it again, so as to promote limit
Position piston, limiting piston bar, pumping piston and pumping piston bar move right；When tee ball valve is in the second working condition,
The first chamber that oil in the first chamber of two oil cylinders can flow back to the oil cylinder of fuel tank, i.e., two is connected with fuel tank, then and the 3rd
Fluid off-load oil return box in chamber, then limiting piston, limiting piston bar, pumping piston and pumping piston bar are therewith to moving to left
It is dynamic.
In some optional embodiments, second control valve is the second four way ball valve, second four way ball valve
The first actuator port and the external hydraulic oil oil communication, the first chamber of the second actuator port and described two oil cylinders
Connection, the 3rd actuator port is connected with the fuel tank, and the 4th actuator port is in cut-off state；Second four way ball valve is in
During first state, the first actuator port and the connection of the second actuator port, when second four way ball valve is in the second state, second
Actuator port and the connection of the 3rd actuator port.When the second four way ball valve is in the first working condition, external hydraulic oil oil circuit
Can be the first chamber fuel feeding of two oil cylinders, the setting of connecting pipeline can cause external hydraulic oil oil circuit and two oil again
3rd chamber of cylinder supplements fluid for it, so as to promote limiting piston, limiting piston bar, pumping piston and pumping piston bar
Move right；When tee ball valve is in the second working condition, the oil in the first chamber of two oil cylinders can flow back to fuel tank, i.e.,
The first chamber of two oil cylinders is connected with fuel tank, then the fluid off-load oil return box in the 3rd chamber, then limiting piston, spacing
Piston rod, pumping piston and pumping piston bar are moved to the left therewith.
In some optional embodiments, second control valve is solenoid directional control valve, the of the solenoid directional control valve
One actuator port is connected with the oil-out of the external hydraulic oil oil circuit, the second actuator port and the first of described two oil cylinders
Chamber, the 3rd actuator port is connected with the fuel tank；When the solenoid directional control valve is in first state, the first actuator port
Connected with the second actuator port, when the solenoid directional control valve is in the second state, the second actuator port and the 3rd actuator port connect
It is logical.When solenoid directional control valve is in the first working condition, external hydraulic oil oil circuit can be the first chamber fuel feeding of two oil cylinders,
The setting of connecting pipeline, the 3rd chamber that external hydraulic oil oil circuit and two oil cylinders can be caused again is its makeup oil
Liquid, so as to promote limiting piston, limiting piston bar, pumping piston and pumping piston bar to move right；When solenoid directional control valve is in
During the second working condition, the oil in the first chamber of two oil cylinders can flow back to the first chamber and oil of the oil cylinder of fuel tank, i.e., two
Case is connected, then the fluid off-load oil return box in the 3rd chamber, then limiting piston, limiting piston bar, pumping piston and pumping
Piston rod is moved to the left therewith.
Certain above-mentioned solenoid directional control valve can be that two position, three-way electromagnetic change valve can also be two-position four-way solenoid directional control valve,
When solenoid directional control valve is two-position four-way solenoid directional control valve, the 4th actuator port of this reversal valve can be standby hydraulic fluid port.
In some optional embodiments, second control valve is pilot operated directional control valve, the of the pilot operated directional control valve
One actuator port is connected with the oil-out of the external hydraulic oil oil circuit, the second actuator port and the first of described two oil cylinders
Chamber, the 3rd actuator port is connected with the fuel tank, and the 4th actuator port is in cut-off state；At the pilot operated directional control valve
When first state, the first actuator port and the connection of the second actuator port, when the pilot operated directional control valve is in the second state, second
Actuator port and the connection of the 3rd actuator port.When pilot operated directional control valve is in the first working condition, external hydraulic oil oil circuit can
Think the first chamber fuel feeding of two oil cylinders, the setting of connecting pipeline can cause external hydraulic oil oil circuit and two oil cylinders again
The 3rd chamber for its supplement fluid so that promote limiting piston, limiting piston bar, pumping piston and pumping piston bar to
Move right；When pilot operated directional control valve is in the second working condition, the oil in the first chamber of two oil cylinders can flow back to fuel tank, i.e.,
The first chamber of two oil cylinders is connected with fuel tank, then the fluid off-load oil return box in the 3rd chamber, then limiting piston, spacing
Piston rod, pumping piston and pumping piston bar are moved to the left therewith.
Certain above-mentioned pilot operated directional control valve can be that two-position three way pilot operated directional control valve can also be two-position four-way pilot operated directional control valve,
When pilot operated directional control valve is two-position four-way pilot operated directional control valve, the 4th actuator port of this reversal valve can be standby hydraulic fluid port.
Present invention also offers a kind of concrete pumping equipment, including：Concrete piston, in addition to the pump described in any of the above-described
Liquor charging pressure control system.Because said pump liquor charging pressure control system is easy to that concrete piston is changed and repaired, processing safety
It is higher, while realizing the function of buffering reversing impact and regulating piston stroke when pumping commutation, improve concrete pumping and set
Standby operating efficiency and service life.So, the concrete pumping equipment that the present invention is provided, with higher operating efficiency.
Brief description of the drawings
Fig. 1 is pumps hydraulic control system principle schematic of the prior art；
Fig. 2 is the first pumps hydraulic control system principle schematic provided in an embodiment of the present invention；
Fig. 3 a are original when second of pumps hydraulic control system provided in an embodiment of the present invention is in the first working condition
Manage schematic diagram；
Fig. 3 b are original when second of pumps hydraulic control system provided in an embodiment of the present invention is in the second working condition
Manage schematic diagram；
Fig. 4 a are original when the third pumps hydraulic control system provided in an embodiment of the present invention is in the first working condition
Manage schematic diagram；
Fig. 4 b are original when the third pumps hydraulic control system provided in an embodiment of the present invention is in the second working condition
Manage schematic diagram；
Fig. 5 a are original when the 4th kind of pumps hydraulic control system provided in an embodiment of the present invention is in the first working condition
Manage schematic diagram；
Fig. 5 b are original when the 4th kind of pumps hydraulic control system provided in an embodiment of the present invention is in the second working condition
Manage schematic diagram；
Fig. 6 a are original when the 5th kind of pumps hydraulic control system provided in an embodiment of the present invention is in the first working condition
Manage schematic diagram；
Fig. 6 b are original when the 5th kind of pumps hydraulic control system provided in an embodiment of the present invention is in the second working condition
Manage schematic diagram；
Fig. 7 a are original when the 6th kind of pumps hydraulic control system provided in an embodiment of the present invention is in the first working condition
Manage schematic diagram；
Fig. 7 b are original when the 6th kind of pumps hydraulic control system provided in an embodiment of the present invention is in the second working condition
Manage schematic diagram；
Fig. 8 a are original when the 7th kind of pumps hydraulic control system provided in an embodiment of the present invention is in the first working condition
Manage schematic diagram；
Fig. 8 b are original when the 7th kind of pumps hydraulic control system provided in an embodiment of the present invention is in the second working condition
Manage schematic diagram；
Fig. 9 a are original when the 8th kind of pumps hydraulic control system provided in an embodiment of the present invention is in the first working condition
Manage schematic diagram；
Fig. 9 b are original when the 8th kind of pumps hydraulic control system provided in an embodiment of the present invention is in the second working condition
Manage schematic diagram；
Figure 10 a are original when the 9th kind of pumps hydraulic control system provided in an embodiment of the present invention is in the first working condition
Manage schematic diagram；
Figure 10 b are original when the 9th kind of pumps hydraulic control system provided in an embodiment of the present invention is in the second working condition
Manage schematic diagram.
Reference：
The external hydraulic oil oil circuit 02- solenoid directional control valves of 01-
03- oil cylinder 031- first chambers
The chambers of 032- second chambers 033- the 3rd
041- limiting piston 042- limiting piston bars
051- pumping piston 052- pumping piston bars
06-U shape pipe 07- stop valves
08- check valve 1- oil cylinders
11- first chamber 12- second chambers
The chamber 2- of 13- the 3rd control oil circuit
Hydraulic oil oil circuit external 21- fuel tanks 22-
23- the second control valve 231- tee ball valves
232- the second four way ball valve 233- two position, three-way electromagnetic change valves
234- two-position four-way solenoid directional control valves 3- buffers oil circuit
31- the first control valve the first four way ball valves of 311-
32- connecting pipelines the first communicating pipes of 321-
322- the second communicating pipe 323- third connectings pipes
324- the 4th communicating pipe 33- check valves
41- limiting piston 42- limiting piston bars
51- pumping piston 52- pumping piston bars
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of patent protection of the present invention.
In concrete pumping equipment, concrete piston belongs to easily worn part, it is necessary to often change.Concrete piston is during due to work
In concrete cylinder, change when must by concrete piston from concrete cylinder be retracted into water tank in can be dismantled, changed and be repaired.While pump
Send and set buffering oil circuit during commutation to realize the effect of buffering reversing impact and regulating piston stroke, but buffering of the prior art
Oil circuit needs individually operated control, and control gets up cumbersome, adds operating procedure when changing concrete piston.
In view of this, as shown in Fig. 2 wherein Fig. 2 is the first pumps hydraulic control system provided in an embodiment of the present invention
Principle schematic；The invention provides a kind of pumps hydraulic control system, including：Concrete piston hydraulic pressure controls oil circuit and buffering oil circuit
3；Wherein：
Concrete piston hydraulic pressure control oil circuit includes：The control oil circuit 2 that two oil cylinders 1, two oil cylinders 1 of control work, each oil
Cylinder 1 includes：Cylinder body, the limiting piston 41 being arranged in cylinder body, limiting piston bar 42, pumping piston 51 and pumping piston bar 52,
Wherein：Chamber where cylinder body is divided into three chambers, limiting piston bar 42 by limiting piston 41 and pumping piston 51 is the second chamber
Room 12, another chamber are first chamber 11, and the end of limiting piston bar 42 is connected with pumping piston 51, pumping piston bar 52
End be connected with concrete piston；
Buffering oil circuit 3 includes：One the first control valve 31 and with the one-to-one connecting pipeline 32 of each oil cylinder 1；It is each
To in mutual corresponding connecting pipeline 32 and oil cylinder 1：One end of connecting pipeline 32 is connected with the second chamber 12 of oil cylinder 1, another
End is connected with the 3rd chamber 13 of oil cylinder 1；
Each connecting pipeline 32 is connected with the first control valve 31, when the first control valve 31 is in first state, and first
Control valve 31 controls the chamber 13 of second chamber 12 and the 3rd of each oil cylinder 1 to turn on, when the first control valve 31 is in the second state
When, the first control valve 31 controls the chamber 13 of second chamber 12 and the 3rd of each oil cylinder 1 to disconnect.
The pumps hydraulic control system that the present invention is provided, it is first when needing pumping when applying in concrete pumping equipment
First open the first control valve 31 so that the chamber 13 of second chamber 12 and the 3rd of each oil cylinder 1, which is turned on, (can play regulating piston
Impulsive force excessive effect when stroke and buffering are to prevent from commutating), control oil circuit 2 is in the first working condition, now two oil
Pressure oil in the first chamber 11 of cylinder 1 promotes limiting piston 41 to stretch out (arrow as shown in Figure 2 by controlling oil circuit 2 to provide
Head direction), when pumping piston 51 is moved to the direction of first chamber 11, limiting piston bar 42 is limited piston 41 and withstood, and makes pump
Piston 51 and pumping piston bar 52 is sent to be moved again to first chamber 11, therefore concrete piston will not be retracted into water tank；It is fast when needing
When speed changes concrete piston, the first control valve 31 is first shut off so that the chamber 13 of second chamber 12 and the 3rd of each oil cylinder 1 is simultaneously
Disconnect, the pressure oil that control oil circuit 2 is in the second working condition, the first chamber 11 of two oil cylinders 1 starts unloading, works as pumping
Piston rod 52 to the direction of first chamber 11 move when, limiting piston bar 42 promote limiting piston 41 retract (with the arrow shown in Fig. 2
Direction in opposite direction) so that pumping piston 51 can continue to move to the direction of first chamber 11 with pumping piston bar 52.Cause
This concrete piston can be retracted into water tank, facilitate operating personnel that concrete piston is repaired or replaced.
It can be seen that, during aforesaid operations, as long as first control valve of operation, you can to realize second to each oil cylinder
The control for connecting and disconnecting while chamber and three chambers, saves operating procedure.So, the pumps hydraulic that the present invention is provided
Control system, is easy to that concrete piston is changed and repaired, processing safety is higher, and simultaneous pumping sets buffer unit when commutating
To realize the effect of buffering reversing impact and regulating piston stroke, improve the operating efficiency of concrete pumping equipment and use the longevity
Life.
Above-mentioned first control valve 31 and the annexation of two pipelines are specially：First control valve 31 at least includes：First
Actuator port, the second actuator port, the 3rd actuator port and the 4th actuator port, each connecting pipeline 32 include two connections
Pipe, wherein：One end of the first communicating pipe 321 in two communicating pipe of one connecting pipeline 32 and the 3rd of corresponding oil cylinder 1
Chamber 13 is connected, and the other end is connected with the first actuator port of the first control valve 31, one end of the second communicating pipe 322 with it is corresponding
The second chamber 12 of oil cylinder 1 is connected, and the other end is connected with the second actuator port of the first control valve 31；Another connecting pipeline 32
Two communicating pipes in one end of third connecting pipe 323 connected with the 3rd chamber 13 of corresponding oil cylinder 1, the other end and first
The 3rd actuator port connection of control valve 31, one end of the 4th communicating pipe 324 is connected with the second chamber 12 of corresponding oil cylinder 1,
The other end is connected with the 4th actuator port of the first control valve 31；
When the first control valve 31 is in first state, the first actuator port and the connection of the second actuator port, the 3rd work
Hydraulic fluid port and the connection of the 4th actuator port, the chamber 13 of second chamber 12 and the 3rd of each oil cylinder 1 is turned on, at the first control valve 31
When the second state, do not connect between the first actuator port, the second actuator port, the 3rd actuator port and the 4th actuator port
Logical, the chamber 13 of second chamber 12 and the 3rd of each oil cylinder 1 disconnects.
Optionally, as shown in Figure 3 a and Figure 3 b shows, wherein, Fig. 3 a be second of pumps hydraulic control provided in an embodiment of the present invention
System processed is in principle schematic during the first working condition；Fig. 3 b are second of pumps hydraulic control provided in an embodiment of the present invention
System processed is in principle schematic during the second working condition；Above-mentioned first control valve 31 can be the first four way ball valve 311, the
One four way ball valve 311 includes four actuator ports, is respectively：First actuator port, the second actuator port, the 3rd actuator port and
4th actuator port, one end of the first communicating pipe 321 is connected with the 3rd chamber 13 of corresponding oil cylinder 1, the other end and the one or four
The first actuator port connection of pass ball valve 311, one end of the second communicating pipe 322 is connected with the second chamber 12 of corresponding oil cylinder 1,
The other end is connected with the second actuator port of the first four way ball valve 311；One end of third connecting pipe 323 and corresponding oil cylinder 1
3rd chamber, the other end is connected with the 3rd actuator port of the first four way ball valve 311, one end of the 4th communicating pipe 324 with
The second chamber 12 of corresponding oil cylinder 1 is connected, and the other end is connected with the 4th actuator port of the first four way ball valve 311；
When the first four way ball valve 311 is in first state, the first actuator port and the connection of the second actuator port, the 3rd work
Make hydraulic fluid port and the connection of the 4th actuator port, the chamber 13 of second chamber 12 and the 3rd of each oil cylinder 1 is turned on, when the first four way ball valve
311 be in the second state when, between the first actuator port, the second actuator port, the 3rd actuator port and the 4th actuator port
Do not connect, the chamber 13 of second chamber 12 and the 3rd of each oil cylinder 1 disconnects.
When needing pumping, the first four way ball valve 311 is first turned on so that the second chamber 12 and the 3rd of each oil cylinder 1
Chamber 13 simultaneously turns on and (can play regulating piston stroke and buffering to prevent impulsive force excessive effect during commutation), control oil
Road 2 is in the first working condition (as shown in Figure 3 a), and now the pressure oil in the first chamber 11 of two oil cylinders 1 is by controlling oil
Road 2 is provided, and promotes limiting piston 41 to stretch out (direction of arrow as shown in Figure 3 a), when pumping piston 51 is to the side of first chamber 11
To during movement, limiting piston bar 42 is limited piston 41 and withstood, and prevents pumping piston 51 and pumping piston bar 52 from again to first
Chamber 11 is moved, therefore concrete piston will not be retracted into water tank；When needing quick-replaceable concrete piston, the first control valve is first shut off
31 so that the chamber 13 of second chamber 12 and the 3rd of each oil cylinder 1 is simultaneously switched off, control oil circuit 2 is in the second working condition (such as
Shown in Fig. 3 b), the pressure oil in the first chamber 11 of two oil cylinders 1 starts unloading, when pumping piston bar 51 is to first chamber 11
When direction is moved, limiting piston bar 42 promotes limiting piston 41 to retract (direction of arrow as depicted on figure 3b), so that pump
Piston 51 and pumping piston bar 52 is sent to continue to move to the direction of first chamber 11.Therefore concrete piston can be retracted into water tank, side
Concrete piston is repaired or replaced convenient to operate personnel.
It is respectively equipped with to improve on the cushioning effect of connecting pipeline, above-mentioned first communicating pipe 321 and third connecting pipe 323
One check valve 33, and the 3rd chamber of oil-out and the corresponding oil cylinder 1 of each check valve 33, oil inlet and corresponding oil
The second chamber 12 of cylinder 1 is connected, and then can be limited after second chamber 12 connects with the 3rd chamber 13, the oil in connecting pipeline 32
It is one-way transmission.
The concrete structure of above-mentioned control oil circuit can have a variety of, in a kind of specific embodiment, as shown in Fig. 2 control
Oil circuit includes：Fuel tank 21, the external control valve 23 of hydraulic oil oil circuit 22 and second；Second control valve 23 has at least three work
Hydraulic fluid port, respectively the first actuator port, the second actuator port and the 3rd actuator port, wherein：First actuator port with it is external
The oil-out connection of hydraulic oil oil circuit 22, the second actuator port is connected with the first chamber 11 of two oil cylinders 1, the 3rd actuator port
Connected with fuel tank 21；When second control valve 23 is in first state, the first actuator port and the connection of the second actuator port, the second control
When valve 23 processed is in the second state, the second actuator port and the connection of the 3rd actuator port.
For the ease of operating and controlling, the above-mentioned control valve 23 of first control valve 31 and second is interstage valve.
The concrete structure of above-mentioned second control valve 23 can be a variety of：Such as solenoid directional control valve, pilot operated directional control valve lead to ball more
Valve.
As shown in Fig. 3 a, Fig. 3 b, Fig. 4 a and Fig. 4 b, wherein：If Fig. 3 a are second provided in an embodiment of the present invention pumping
Hydraulic control system is in principle schematic during the first working condition；Fig. 3 b are second provided in an embodiment of the present invention pumping
Hydraulic control system is in principle schematic during the second working condition；If Fig. 4 a are the third pump provided in an embodiment of the present invention
Liquor charging pressure control system is in principle schematic during the first working condition；Fig. 4 b are the third pump provided in an embodiment of the present invention
Liquor charging pressure control system is in principle schematic during the second working condition；Above-mentioned second control valve 23 is tee ball valve 231, then
Above-mentioned control oil circuit 2 includes：Fuel tank 21, external hydraulic oil oil circuit 22 and tee ball valve 231, tee ball valve 231 include three
Actuator port, respectively the first actuator port, the second actuator port and the 3rd actuator port, wherein：
The oil-out connection of the external hydraulic oil oil circuit 22 of first actuator port of tee ball valve 231, the second actuator port
Connected with the first chamber 11 of two oil cylinders 1, the 3rd actuator port is connected with fuel tank 21；Tee ball valve 231 is in first state
When, the first actuator port and the connection of the second actuator port, when tee ball valve 231 is in the second state, the second actuator port and the
Three actuator ports are connected.When tee ball valve 231 is in the first working condition, external hydraulic oil oil circuit 22 can be two oil
The fuel feeding of first chamber 11 of cylinder 1, the setting of connecting pipeline 32 can cause external hydraulic oil oil circuit 22 and two oil cylinders 1 again
The 3rd chamber 13 connection for its supplement fluid so that promote limiting piston 41, limiting piston bar 42, pumping piston 51 and pumping
Piston rod 52 moves right；When tee ball valve 231 is in the second working condition, the oil in the first chamber 11 of two oil cylinders 1
The first chamber 11 that the oil cylinder of fuel tank 21, i.e., two 1 can be flowed back to is connected with fuel tank 21, then the fluid off-load in the 3rd chamber 13
Oil return box 21, then limiting piston 41, limiting piston bar 42, pumping piston 51 and pumping piston bar 52 are moved to the left therewith.
For the ease of operation, while controlling the four way ball valve 311 of tee ball valve 231 and first to work, such as Fig. 4 a and Fig. 4 b institutes
Show, the four way ball valve 311 of tee ball valve 231 and first is linkage multi-pass ball valve.Can simultaneously it be controlled by an operation handle
Two valves.
In another embodiment, as shown in Fig. 5 a, Fig. 5 b, Fig. 6 a and Fig. 6 b, wherein：As Fig. 5 a are real for the present invention
Principle schematic when applying the 4th kind of pumps hydraulic control system of example offer in the first working condition；Fig. 5 b are real for the present invention
Principle schematic when applying the 4th kind of pumps hydraulic control system of example offer in the second working condition；If Fig. 6 a are the present invention
The 5th kind of pumps hydraulic control system that embodiment is provided is in principle schematic during the first working condition；Fig. 6 b are the present invention
The 5th kind of pumps hydraulic control system that embodiment is provided is in principle schematic during the second working condition；Above-mentioned second control
Valve 23 is the second four way ball valve 232, then above-mentioned control oil circuit 2 includes：Fuel tank 21, the external four-way of hydraulic oil oil circuit 22 and second
Ball valve 232, the second four way ball valve 232 includes four actuator ports, respectively the first actuator port, the second actuator port, the 3rd
Actuator port and the 4th actuator port, wherein：
The oil-out connection of the external hydraulic oil oil circuit 22 of first actuator port of the second four way ball valve 232, the second work
Hydraulic fluid port is connected with the first chamber 11 of two oil cylinders 1, and the 3rd actuator port is connected with fuel tank 21, and the 4th actuator port is in cut-off
State；When second four way ball valve 232 is in first state, the first actuator port and the connection of the second actuator port, the second four-way ball
When valve 232 is in the second state, the second actuator port and the connection of the 3rd actuator port.When the second four way ball valve 232 is in first
During working condition, external hydraulic oil oil circuit 22 can for two oil cylinders 1 the fuel feeding of first chamber 11, connecting pipeline 32 sets
Put, external hydraulic oil oil circuit 22 can be caused to be connected with the 3rd chamber 13 of two oil cylinders 1 again and supplement fluid for it, so as to push away
Dynamic limiting piston 41, limiting piston bar 42, pumping piston 51 and pumping piston bar 52 move right；When tee ball valve 231 is in
During the second working condition, the oil in the first chamber 11 of two oil cylinders 1 can flow back to the first chamber of the oil cylinder of fuel tank 21, i.e., two 1
Room 11 is connected with fuel tank 21, then the fluid off-load oil return box 21 in the 3rd chamber 13, then limiting piston 41, limiting piston bar
42nd, pumping piston 51 and pumping piston bar 52 are moved to the left therewith.
4th working hole of above-mentioned second four way ball valve 232 can be as standby hydraulic fluid port, when other actuator ports are without breakage
When, the 4th actuator port is in blocked state, when other actuator ports have a breakage, can open the 4th actuator port
Use.
For the ease of operation, while control the second four way ball valve 232 and the first four way ball valve 311 to work, such as Fig. 6 a and figure
Shown in 6b, the second four way ball valve 232 and the first four way ball valve 311 are linkage multi-pass ball valve.I.e. can by an operation handle,
Two valves are controlled simultaneously.
Above-mentioned tee ball valve, the first four way ball valve and the second four way ball valve have good airproof performance, leak volume it is small, to greasy dirt
Particle sensitive is low, it is high pressure resistant the advantages of, therefore it is suitable for concrete pumping equipment, even if working long hours, does not also allow
Easily there is leakage, the phenomenon of clamping stagnation, reliability is higher.
In another embodiment, the second control valve is solenoid directional control valve, the first actuator port of solenoid directional control valve
Connected with the oil-out of external hydraulic oil oil circuit, the second actuator port is connected with the first chamber of two oil cylinders, the 3rd work
Hydraulic fluid port is connected with the fuel tank；When solenoid directional control valve is in first state, the first actuator port and the connection of the second actuator port, electricity
When magnetic reversal valve is in the second state, the second actuator port and the connection of the 3rd actuator port.Above-mentioned solenoid directional control valve can be two
Position three-way solenoid valve can also be two-position four-way solenoid directional control valve etc..
As shown in Fig. 7 a, Fig. 7 b, Fig. 8 a and Fig. 8 b, wherein：If Fig. 7 a are 6th kind provided in an embodiment of the present invention pumping
Hydraulic control system is in principle schematic during the first working condition；Fig. 7 b are 6th kind provided in an embodiment of the present invention pumping
Hydraulic control system is in principle schematic during the second working condition；If Fig. 8 a are the 7th kind of pump provided in an embodiment of the present invention
Liquor charging pressure control system is in principle schematic during the first working condition；Fig. 8 b are the 7th kind of pump provided in an embodiment of the present invention
Liquor charging pressure control system is in principle schematic during the second working condition；Above-mentioned second control valve 23 is changed for two-position three-way electromagnetic
To valve 233, then above-mentioned control oil circuit 2 includes：Fuel tank 21, external hydraulic oil oil circuit 22 and two position, three-way electromagnetic change valve 233,
Two position, three-way electromagnetic change valve 233 includes three actuator ports, respectively the first actuator port, the second actuator port and the 3rd work
Make hydraulic fluid port, wherein：
The oil-out connection of the external hydraulic oil oil circuit 22 of first actuator port of two position, three-way electromagnetic change valve 233, the
Two actuator ports are connected with the first chamber 11 of two oil cylinders 1, and the 3rd actuator port is connected with fuel tank 21；Two-position three-way electromagnetic is changed
When being in first state to valve 233, the first actuator port and the second actuator port are connected, at two position, three-way electromagnetic change valve 233
When the second state, the second actuator port and the connection of the 3rd actuator port.When two position, three-way electromagnetic change valve 233 is in the first work
When making state, external hydraulic oil oil circuit 22 can for two oil cylinders 1 the fuel feeding of first chamber 11, the setting of connecting pipeline 32,
External hydraulic oil oil circuit 22 can be caused to be connected with the 3rd chamber 13 of two oil cylinders 1 again and supplement fluid for it, so as to promote
Limiting piston 41, limiting piston bar 42, pumping piston 51 and pumping piston bar 52 move right；Work as two position, three-way electromagnetic change valve
233 when being in the second working condition, and the oil in the first chamber 11 of two oil cylinders 1 can flow back to the oil cylinder of fuel tank 21, i.e., two 1
First chamber 11 is connected with fuel tank 21, then the fluid off-load oil return box 21 in the 3rd chamber 13, then limiting piston 41, spacing
Piston rod 42, pumping piston 51 and pumping piston bar 52 are moved to the left therewith.
For the ease of operation, while controlling the four way ball valve 311 of two position, three-way electromagnetic change valve 233 and first to work, such as scheme
Shown in 8a and Fig. 8 b, the four way ball valve 311 of two position, three-way electromagnetic change valve 233 and first is interstage valve.A behaviour can be passed through
Make handle, while controlling two valves.
In another embodiment, as shown in Fig. 9 a, Fig. 9 b, Figure 10 a and Figure 10 b, wherein：If Fig. 9 a are the present invention
The 8th kind of pumps hydraulic control system that embodiment is provided is in principle schematic during the first working condition；Fig. 9 b are the present invention
The 8th kind of pumps hydraulic control system that embodiment is provided is in principle schematic during the second working condition；If Figure 10 a are this
The 9th kind of pumps hydraulic control system that inventive embodiments are provided is in principle schematic during the first working condition；Figure 10 b are
9th kind of pumps hydraulic control system provided in an embodiment of the present invention is in principle schematic during the second working condition；Above-mentioned
Two control valves 23 are two-position four-way solenoid directional control valve 234, then above-mentioned control oil circuit 2 includes：Fuel tank 21, external hydraulic oil oil circuit
22 and two-position four-way solenoid directional control valve 234, two-position four-way solenoid directional control valve 234 includes four actuator ports, respectively the first work
Make hydraulic fluid port, the second actuator port, the 3rd actuator port and the 4th actuator port, wherein：
The oil-out connection of the external hydraulic oil oil circuit 22 of first actuator port of two-position four-way solenoid directional control valve 234, the
Two actuator ports are connected with the first chamber 11 of two oil cylinders 1, and the 3rd actuator port is connected with fuel tank 21, at the 4th actuator port
In cut-off state；When two-position four-way solenoid directional control valve 234 is in first state, the first actuator port and the second actuator port connect
It is logical, when two-position four-way solenoid directional control valve 234 is in the second state, the second actuator port and the connection of the 3rd actuator port.When two
When four-way electromagnetic reversing valve 234 is in the first working condition, external hydraulic oil oil circuit 22 can be the first chamber of two oil cylinders 1
The fuel feeding of room 11, the setting of connecting pipeline 32 can cause the 3rd chamber 13 of external hydraulic oil oil circuit 22 and two oil cylinders 1 again
Connect and supplement fluid for it, so as to promote limiting piston 41, limiting piston bar 42, pumping piston 51 and pumping piston bar 52 to the right
It is mobile；When two-position four-way solenoid directional control valve 234 is in the second working condition, the oil in the first chamber 11 of two oil cylinders 1 can
It is connected with the first chamber 11 for flowing back to the oil cylinder of fuel tank 21, i.e., two 1 with fuel tank 21, then the fluid off-load in the 3rd chamber 13 is returned
Fuel tank 21, then limiting piston 41, limiting piston bar 42, pumping piston 51 and pumping piston bar 52 are moved to the left therewith.
4th working hole of above-mentioned two-position four-way solenoid directional control valve 234 can be as standby hydraulic fluid port, when other actuator ports
During without breakage, the 4th actuator port is in blocked state, can be by the 4th working oil when other actuator ports have a breakage
Mouth is opened and used.
For the ease of operation, while controlling two-position four-way solenoid directional control valve 234 and the first four way ball valve 311 to work, such as scheme
Shown in 10a and 10b, the second four way ball valve 232 and the first four way ball valve 311 are linkage multi-pass ball valve.A behaviour can be passed through
Make handle, while controlling two valves.
Optionally, above-mentioned second control valve is pilot operated directional control valve, the first actuator port of pilot operated directional control valve and external height
The oil-out connection of oil circuit is pressed oil, the second actuator port is connected with the first chamber of two oil cylinders, the 3rd actuator port and fuel tank
Connection, the 4th actuator port is in cut-off state；When pilot operated directional control valve is in first state, the first actuator port and the second work
Hydraulic fluid port is connected, when pilot operated directional control valve is in the second state, the second actuator port and the connection of the 3rd actuator port.Work as pilot operated directional control valve
During in the first working condition, external hydraulic oil oil circuit can for two oil cylinders first chamber fuel feeding, connecting pipeline sets
Put, the 3rd chamber of external hydraulic oil oil circuit and two oil cylinders can be caused to supplement fluid for it again, so as to promote limit
Position piston, limiting piston bar, pumping piston and pumping piston bar move right；When pilot operated directional control valve is in the second working condition
When, the first chamber that the oil in the first chamber of two oil cylinders can flow back to the oil cylinder of fuel tank, i.e., two is connected with fuel tank, then and
Fluid off-load oil return box in three chambers, then limiting piston, limiting piston bar, pumping piston and pumping piston bar are therewith to the left
It is mobile.
Certain above-mentioned pilot operated directional control valve can be that two-position three way pilot operated directional control valve can also be two-position four-way pilot operated directional control valve,
When pilot operated directional control valve is two-position four-way pilot operated directional control valve, the 4th actuator port of this reversal valve can be standby hydraulic fluid port.
Above-mentioned first four way ball valve, the second four way ball valve, tee ball valve, solenoid directional control valve, pilot operated directional control valve can use hand
Dynamic control, or Electronic control, also or be pneumatic control.
Based on the advantage of said pump liquor charging pressure control system, present invention also offers a kind of concrete pumping equipment, including：
Concrete piston, includes the pumps hydraulic control system of any of the above-described.Because said pump liquor charging pressure control system is easy to pair
Concrete piston is changed and repaired, and processing safety is higher, improves the operating efficiency of concrete pumping equipment, while in pumping
The function of buffering reversing impact and regulating piston stroke is realized during commutation, the operating efficiency of concrete pumping equipment is improved and makes
With the life-span, so, the concrete pumping equipment that the present invention is provided, with higher operating efficiency.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (11)
1. a kind of pumps hydraulic control system, it is characterised in that including：Concrete piston hydraulic pressure controls oil circuit and buffering oil circuit；Wherein：
Concrete piston hydraulic pressure control oil circuit includes：Two oil cylinders, the control oil circuits of two cylinder efficients of control, each oil cylinder include：
Cylinder body, the limiting piston being arranged in the cylinder body, limiting piston bar, pumping piston and pumping piston bar, wherein：It is described spacing
The cylinder body is divided into three chambers by piston and the pumping piston, the chamber where the limiting piston bar be second chamber,
Chamber where the pumping piston bar is that the 3rd chamber, another chamber are first chamber, and the end of the limiting piston bar
End is connected with pumping piston, and the end of the pumping piston bar is connected with concrete piston；
Buffering oil circuit includes：One the first control valve and with the one-to-one connecting pipeline of each oil cylinder；Every a pair mutually corresponding
Connecting pipeline and oil cylinder in：One end of the connecting pipeline is connected with the second chamber of oil cylinder, and the 3rd of the other end and oil cylinder the
Chamber；
Each connecting pipeline is connected with first control valve, when first control valve is in first state, institute
Second chamber and the conducting of the 3rd chamber that the first control valve controls each oil cylinder are stated, when first control valve is in the second state
When, first control valve controls the second chamber and the 3rd chamber of each oil cylinder to disconnect.
2. pumps hydraulic control system as claimed in claim 1, it is characterised in that first control valve at least includes：The
One actuator port, the second actuator port, the 3rd actuator port and the 4th actuator port, each connecting pipeline include two companies
Siphunculus, wherein：One end of the first communicating pipe in two communicating pipe of one connecting pipeline and the 3rd of corresponding oil cylinder
Chamber, the other end is connected with the first actuator port of first control valve, one end of the second communicating pipe and corresponding oil
The second chamber connection of cylinder, the other end is connected with the second actuator port of first control valve；Another described connecting pipeline
Two communicating pipes in third connecting pipe one end and corresponding oil cylinder the 3rd chamber, the other end and the described first control
The 3rd actuator port connection of valve processed, one end of the 4th communicating pipe is connected with the second chamber of corresponding oil cylinder, the other end and institute
State the 4th actuator port connection of the first control valve；
When first control valve is in first state, the first actuator port and the connection of the second actuator port, the 3rd working oil
Mouthful connect with the 4th actuator port, the second chamber of each oil cylinder and the 3rd chamber are turned on, when first control valve is in the
During two-state, do not connected between the first actuator port, the second actuator port, the 3rd actuator port and the 4th actuator port,
The second chamber and the 3rd chamber of each oil cylinder disconnect.
3. pumps hydraulic control system as claimed in claim 2, it is characterised in that first control valve is the first four-way ball
Valve.
4. pumps hydraulic control system as claimed in claim 2, it is characterised in that first communicating pipe and the described 3rd connects
A check valve is respectively equipped with siphunculus, and the oil-out of each check valve is connected with the second chamber of corresponding oil cylinder, is entered
3rd chamber of hydraulic fluid port and corresponding oil cylinder.
5. the pumps hydraulic control system as described in any one of Claims 1 to 4, it is characterised in that the control oil circuit includes：
Fuel tank, external hydraulic oil oil circuit and the second control valve；First actuator port of second control valve and the external height
Press oil the oil-out connection of oil circuit, the second actuator port connects with the first chamber of described two oil cylinders, the 3rd actuator port and
The fuel tank connection；When second control valve is in first state, the first actuator port and the connection of the second actuator port are described
When second control valve is in the second state, the second actuator port and the connection of the 3rd actuator port.
6. pumps hydraulic control system as claimed in claim 5, it is characterised in that first control valve and the described second control
Valve processed is interstage valve.
7. pumps hydraulic control system as claimed in claim 5, it is characterised in that second control valve is tee ball valve,
First actuator port of the tee ball valve is connected with the oil-out of the external hydraulic oil oil circuit, the second actuator port and two
The first chamber connection of individual oil cylinder, the 3rd actuator port is connected with the fuel tank；When the tee ball valve is in first state, the
One actuator port and the connection of the second actuator port, when the tee ball valve is in the second state, the second actuator port and the 3rd work
Make hydraulic fluid port connection.
8. pumps hydraulic control system as claimed in claim 5, it is characterised in that second control valve is the second four-way ball
Valve, the first actuator port of second four way ball valve and the external hydraulic oil oil communication, the second actuator port and institute
The first chamber connection of two oil cylinders is stated, the 3rd actuator port is connected with the fuel tank, and the 4th actuator port is in cut-off state；
When second four way ball valve is in first state, the first actuator port and the connection of the second actuator port, the second four-way ball
When valve is in the second state, the second actuator port and the connection of the 3rd actuator port.
9. pumps hydraulic control system as claimed in claim 5, it is characterised in that second control valve is electromagnetic switch
Valve, the first actuator port of the solenoid directional control valve is connected with the oil-out of the external hydraulic oil oil circuit, the second working oil
Mouth is connected with the first chamber of described two oil cylinders, and the 3rd actuator port is connected with the fuel tank；The solenoid directional control valve is in
During first state, the first actuator port and the connection of the second actuator port, when the solenoid directional control valve is in the second state, the second work
Make hydraulic fluid port and the connection of the 3rd actuator port.
10. pumps hydraulic control system as claimed in claim 5, it is characterised in that second control valve is liquid controlled reversing
Valve, the first actuator port of the pilot operated directional control valve is connected with the oil-out of the external hydraulic oil oil circuit, the second working oil
Mouth is connected with the first chamber of described two oil cylinders, and the 3rd actuator port is connected with the fuel tank, and the 4th actuator port, which is in, to be cut
Only state；When the pilot operated directional control valve is in first state, the first actuator port and the connection of the second actuator port, the hydraulic control are changed
When being in the second state to valve, the second actuator port and the connection of the 3rd actuator port.
11. a kind of concrete pumping equipment, including：Concrete piston, it is characterised in that also including any one of such as claim 1~10
Described pumps hydraulic control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410489847.0A CN105508329B (en) | 2014-09-23 | 2014-09-23 | Pumps hydraulic control system and concrete pumping equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410489847.0A CN105508329B (en) | 2014-09-23 | 2014-09-23 | Pumps hydraulic control system and concrete pumping equipment |
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| CN105508329A CN105508329A (en) | 2016-04-20 |
| CN105508329B true CN105508329B (en) | 2017-08-25 |
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| CN201410489847.0A Active CN105508329B (en) | 2014-09-23 | 2014-09-23 | Pumps hydraulic control system and concrete pumping equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107120261B (en) * | 2017-06-19 | 2018-09-21 | 柳工建机江苏有限公司 | A kind of enclosed pumping system concrete piston automatic retracting device and its control method |
| CN113606204B (en) * | 2021-06-17 | 2023-11-17 | 徐州徐工施维英机械有限公司 | Pumping main oil cylinder, control system thereof and equipment using oil cylinder and system |
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| CN105508329A (en) | 2016-04-20 |
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