CN103982411B - Lock cylinder method and apparatus and concrete pump - Google Patents
Lock cylinder method and apparatus and concrete pump Download PDFInfo
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- CN103982411B CN103982411B CN201410213113.XA CN201410213113A CN103982411B CN 103982411 B CN103982411 B CN 103982411B CN 201410213113 A CN201410213113 A CN 201410213113A CN 103982411 B CN103982411 B CN 103982411B
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Abstract
The present invention open one lock cylinder method and apparatus and concrete pump.The method includes: when concrete pump quits work, and oil pump stops pressure oil output, and the first control end of electromagnetic valve and second controls the equal dead electricity of end, and electromagnetic valve is in the first operating position；If the first oil cylinder is in promotion concrete operating mode before concrete pump quits work, then when concrete pump quits work, concrete gravity reacts on the first oil cylinder, and the rodless cavity at the first oil cylinder produces the first active force；First active force acts on the first actuator port P of described electromagnetic valve by the first check valve, and the control port of the first and second inserted valves it is respectively acting on by the 3rd actuator port A and the 4th actuator port B of electromagnetic valve, make two inserted valves completely close, thus lock described first oil cylinder.The present invention is possible to prevent concrete pump to be carried in pipe concrete compression and return shutting down master cylinder in time expecting, thus reduces concrete plugging probability, promotes the overall performance of concrete pump.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly to one lock cylinder method and apparatus and
Concrete pump.
Background technology
Concrete pump is a kind of energy conversion dress that hydraulic energy is converted to flowing concrete pressure energy
Put.At present, the manufacturer of external concrete pump, the most German general thatch maistre and Shi Weiying etc.,
In pumping technology, hydraulic technique, test and the field such as manufacture defines more perfect system, mixed
The research in solidifying soil pump field and technological innovation lead the development of world's pumping technology always.Domestic mixed
The development of solidifying soil pump is started late, and through the effort of decades, domestic concrete pump achieves considerable
Progress, especially achieve breakthrough in hydraulic system and the aspect such as pumping system, Control System Design.
At present, the manufacturer of domestic concrete pump, such as Xu work Shi Weiying, 31 heavy industrys, middle weight
Sections etc. have been equipped with the ability that same overseas enterprise contends with.Commerical ready-mixed concrete complete set of equipments is through nearly 10
The fast development in year, market has tended to ripe, and concrete pumping equipment demand is gradually tended to by market
Rationality, product cost, use cost, profitability, product operation adaptability etc. are wanted by client
Ask more and more higher.
The master cylinder of concrete pump is a kind of energy conversion device that hydraulic energy is converted to mechanical energy,
Master cylinder is connected to concrete piston, and hydraulic energy can be converted to the kinetic energy (potential energy) of concrete.
Existing concrete pump is shut down in time expecting in high level pumping, and master cylinder is carried pipe easily by concrete
Deadweight compression is return, thus adds concrete plugging probability, reduces the globality of concrete pump
Energy.
Summary of the invention
In view of above technical problem, the invention provides a kind of lock cylinder method and apparatus and concrete
Pump, is possible to prevent concrete pump to be carried in pipe concrete compression and return shutting down master cylinder in time expecting,
Thus reduce concrete plugging probability, promote the overall performance of concrete pump.
According to an aspect of the present invention, it is provided that a kind of lock cylinder method, including:
When concrete pump quits work, oil pump stops pressure oil output, the first control of electromagnetic valve
End and second controls the equal dead electricity of end, and described electromagnetic valve is in the first operating position, wherein in the first work
Making position, the first actuator port of described electromagnetic valve and the 3rd actuator port, the 4th actuator port are even
Logical, the second actuator port and the first actuator port, the 3rd actuator port, the 4th actuator port is non-leads
Logical；
If the first oil cylinder is in promotion concrete operating mode before concrete pump quits work, then work as coagulation
When soil pump quits work, concrete gravity reacts on described first oil cylinder, at described first oil cylinder
Rodless cavity produce the first active force；
Described first active force acts on the first working oil of described electromagnetic valve by the first check valve
Mouthful, and described in being respectively acting on by the 3rd actuator port of described electromagnetic valve and the 4th actuator port
First inserted valve and the control port of described second inserted valve, make described first inserted valve and described
Two inserted valves completely close, thus lock described first oil cylinder.
Preferably, described lock cylinder method also includes:
If the second oil cylinder is in promotion concrete operating mode before concrete pump quits work, then work as coagulation
When soil pump quits work, concrete gravity reacts on described second oil cylinder, at described second oil cylinder
Rodless cavity produce the second active force；
Described second active force acts on the first working oil of described electromagnetic valve by the second check valve
Mouthful, and described in being respectively acting on by the 3rd actuator port of described electromagnetic valve and the 4th actuator port
First inserted valve and the control port of described second inserted valve, make described first inserted valve and described
Two inserted valves completely close, thus lock described second oil cylinder.
Preferably, the size of the pressure of described first active force is equal to conveying pipe concrete weight and institute
State the ratio of the first oil cylinder rodless cavity area；The size of the pressure of described second active force is equal to conveying
Pipe concrete weight and the ratio of described second oil cylinder rodless cavity area.
Preferably, described lock cylinder method also includes:
When concrete pump pump concrete, the pressure oil of described oil pump output is by the 3rd check valve
After act on the first actuator port of described electromagnetic valve；
Controller controls the electric situation that obtains of end, control by the first control end and second of described electromagnetic valve
Make described electromagnetic valve and be in the second operating position or the 3rd operating position, wherein at the second working position
Put, the first actuator port of described electromagnetic valve and the 3rd actuator port connection, the second actuator port with
4th actuator port connection；In the 3rd operating position, the first actuator port of described electromagnetic valve and
Four actuator port connections, the second actuator port and the connection of the 3rd actuator port；
When described electromagnetic valve is in the second operating position, pressure oil passes through the 3rd of described electromagnetic valve
Actuator port acts on the control port of described first inserted valve, make described first inserted valve close,
Described second inserted valve is opened, to connect the rodless cavity of described first oil cylinder and described second oil cylinder
Rodless cavity；
Described oil pump is connected with the rodless cavity of described second oil cylinder at the rodless cavity of described first oil cylinder
Time, pressure oil is transported to described first oil cylinder and described second oil cylinder, make described first oil cylinder and
Described second oil cylinder moves repeatedly.
Preferably, described lock cylinder method also includes:
When described electromagnetic valve is in three operating positions, pressure oil passes through the 4th of described electromagnetic valve
Actuator port acts on the control port of described second inserted valve, make described second inserted valve close,
Described first inserted valve is opened, to connect the rod chamber of described first oil cylinder and described second oil cylinder
Rod chamber；
Described oil pump is connected with the rod chamber of described second oil cylinder at the rod chamber of described first oil cylinder
Time, pressure oil is transported to described first oil cylinder and described second oil cylinder, make described first oil cylinder and
Described second oil cylinder moves repeatedly.
According to a further aspect in the invention, it is provided that a kind of lock cylinder assembly, including controller, oil pump,
Electromagnetic valve, the first oil cylinder, the first check valve, the first inserted valve and the second inserted valve, wherein:
Described controller, for when concrete pump quits work, disconnects to described electromagnetic valve the
One controls end and second controls the power supply of end, and indicates described oil pump to stop pressure oil output；
Described oil pump, for the instruction according to described controller, when concrete pump quits work,
Stop pressure oil output；
Described electromagnetic valve, controls the equal dead electricity of end for the first control end and second at described electromagnetic valve
Time, it is in the first operating position, wherein in the first operating position, the first work of described electromagnetic valve
Hydraulic fluid port and the 3rd actuator port, the 4th actuator port connection, the second actuator port and the first working oil
Mouth, the 3rd actuator port, the 4th actuator port are non-conduction；
Described first oil cylinder, if it is mixed to be in promotion for the first oil cylinder before concrete pump quits work
Solidifying geotechnique's condition, then when concrete pump quits work, according to the retroaction of concrete gravity, in institute
The rodless cavity stating the first oil cylinder produces the first active force；
Described first check valve, for acting on the first of described electromagnetic valve by described first active force
Actuator port；
Described first inserted valve and described second inserted valve, for passing through institute at described first active force
The 3rd actuator port and the 4th actuator port of stating electromagnetic valve are respectively acting on described first inserted valve
During control port with described second inserted valve, completely close, thus lock described first oil cylinder.
Preferably, described lock cylinder assembly also includes the second oil cylinder, the second check valve, wherein:
Described second oil cylinder, if it is mixed to be in promotion for the second oil cylinder before concrete pump quits work
Solidifying geotechnique's condition, then when concrete pump quits work, according to the retroaction of concrete gravity, in institute
The rodless cavity stating the second oil cylinder produces the second active force；
Described second check valve, for acting on the first of described electromagnetic valve by described second active force
Actuator port；
Described first inserted valve and described second inserted valve are additionally operable to pass through at described second active force
3rd actuator port of described electromagnetic valve and the 4th actuator port are respectively acting on described first plug-in mounting
During the control port of valve and described second inserted valve, completely close, thus lock described second oil cylinder.
Preferably, the size of the pressure of described first active force is equal to conveying pipe concrete weight and institute
State the ratio of the first oil cylinder rodless cavity area；The size of the pressure of described second active force is equal to conveying
Pipe concrete weight and the ratio of described second oil cylinder rodless cavity area.
Preferably, described lock cylinder assembly also includes the 3rd check valve, wherein:
Described 3rd check valve, for when concrete pump pump concrete, exports described oil pump
Pressure oil act on the first actuator port of described electromagnetic valve；
Described controller is additionally operable to be controlled by the first control end and second changing described electromagnetic valve
That holds obtains electric situation, controls described electromagnetic valve and is in the second operating position or the 3rd operating position, its
In in the second operating position, the first actuator port of described electromagnetic valve and the 3rd actuator port connection,
Second actuator port and the connection of the 4th actuator port；In the 3rd operating position, in the 3rd operating position
First actuator port of described electromagnetic valve and the connection of the 4th actuator port, the second actuator port and the 3rd
Actuator port connects；
Described electromagnetic valve is additionally operable to when being in the second operating position, by pressure oil by described electromagnetism
3rd actuator port of valve acts on the control port of described first inserted valve, to close described first
Inserted valve, open described second inserted valve, thus the rodless cavity of described first oil cylinder and described second
The rodless cavity of oil cylinder is connected；
Described oil pump be additionally operable at the rodless cavity of described first oil cylinder and described second oil cylinder without bar
When chamber is connected, pressure oil is transported to described first oil cylinder and described second oil cylinder, makes described first
Oil cylinder and described second oil cylinder move repeatedly.
Preferably, described electromagnetic valve is additionally operable to, when being in three operating positions, be passed through by pressure oil
4th actuator port of described electromagnetic valve acts on the control port of described second inserted valve, to close
Described second inserted valve, open described first inserted valve, thus the rod chamber of described first oil cylinder and
The rod chamber of described second oil cylinder is connected；Described oil pump is additionally operable to the rod chamber at described first oil cylinder
When connecting with the rod chamber of described second oil cylinder, pressure oil is transported to described first oil cylinder and described
Second oil cylinder, makes described first oil cylinder and described second oil cylinder repeatedly move.
Preferably, described lock cylinder assembly also includes fuel tank, and wherein, described fuel tank passes through way to cycle oil
It is connected with the second actuator port of described electromagnetic valve.
Preferably, described electromagnetic valve is three-position four-way electromagnetic directional valve.
According to a further aspect in the invention, it is provided that a kind of concrete pump, including the most above-mentioned any one
Lock cylinder assembly described in embodiment.
The present invention locks cylinder method and apparatus and concrete pump is possible to prevent concrete pump to wait to expect shutting down
Time master cylinder carried in pipe concrete compression and return, thus reduce concrete plugging probability, promote
The overall performance of concrete pump.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will
The accompanying drawing used required in embodiment or description of the prior art is briefly described, it is clear that
Ground, the accompanying drawing in describing below is only some embodiments of the present invention, skill common for this area
From the point of view of art personnel, on the premise of not paying creative work, it is also possible to obtain according to these accompanying drawings
Obtain other accompanying drawing.
Fig. 1 is the schematic diagram that the present invention locks one embodiment of cylinder assembly.
Fig. 2 is the schematic diagram that the present invention locks one embodiment of cylinder method.
Fig. 3 is the schematic diagram that the present invention locks cylinder another embodiment of method.
Fig. 4 is the schematic diagram of concrete pump pump concrete in one embodiment of the invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, to the technical scheme in the embodiment of the present invention
It is clearly and completely described, it is clear that described embodiment is only that a part of the present invention is real
Execute example rather than whole embodiments.Description at least one exemplary embodiment is actual below
On be merely illustrative, never as to the present invention and application thereof or any restriction of use.Base
Embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, broadly falls into the scope of protection of the invention.
Unless specifically stated otherwise, the parts illustrated the most in these embodiments are relative with step
Layout, numerical expression and numerical value do not limit the scope of the invention.
Simultaneously, it should be appreciated that for the ease of describing, the size of the various piece shown in accompanying drawing
It is not to draw according to actual proportionate relationship.
May not make in detail for technology, method and apparatus known to person of ordinary skill in the relevant
Discuss, but in the appropriate case, described technology, method and apparatus should be considered to authorize description
A part.
Shown here with in all examples discussed, any occurrence should be construed as merely and show
Example rather than as limit.Therefore, other example of exemplary embodiment can have not
Same value.
It should also be noted that similar label and letter expression similar terms in following accompanying drawing, therefore,
The most a certain Xiang Yi accompanying drawing is defined, then need not it is entered in accompanying drawing subsequently
One step discussion.
Fig. 1 is the schematic diagram that the present invention locks one embodiment of cylinder assembly.As it is shown in figure 1, it is described
Lock cylinder assembly, including controller (not shown), oil pump 9, electromagnetic valve the 1, first oil cylinder 7,
First check valve the 5, first inserted valve 2 and the second inserted valve 3, wherein,
Described controller, for when concrete pump quits work, disconnects described electromagnetic valve 1
First controls end X and second controls the power supply of end Y, and indicates described oil pump 9 to stop output pressure
Power oil.
Described oil pump 9, for the instruction according to described controller, when concrete pump quits work,
Stop pressure oil output.
Described electromagnetic valve 1, controls end for the first control end X and second at described electromagnetic valve 1
During the equal dead electricity of Y, it is in the first operating position, wherein in the first operating position, described electromagnetic valve 1
The first actuator port P and the 3rd actuator port A, the 4th actuator port B connection, the second work
Make hydraulic fluid port T and the first actuator port P, the 3rd actuator port A, the 4th actuator port B non-conduction.
Preferably, described electromagnetic valve 1 can be three-position four-way electromagnetic directional valve.
Preferably, as it is shown in figure 1, described first operating position can be the middle position of electromagnetic valve.
Described first oil cylinder 7, if for before concrete pump quits work at described first oil cylinder 7
In promoting concrete operating mode, then when concrete pump quits work, according to the anti-work of concrete gravity
With, the rodless cavity at described first oil cylinder 7 produces the first active force.
Preferably, the size of the pressure of described first active force is equal to conveying pipe concrete weight and institute
State the ratio of the first oil cylinder 7 rodless cavity area.
Described first check valve 5, for acting on described electromagnetic valve 1 by described first active force
First actuator port P.
Described first inserted valve 2 and described second inserted valve 3, for leading at described first active force
The 3rd actuator port A and the 4th actuator port B that cross described electromagnetic valve 1 are respectively acting on described
During the control port X3 of the control port X2 of the first inserted valve 2 and described second inserted valve 3,
Completely close, make the first oil cylinder 7 to move, thus lock described first oil cylinder 7.
Preferably, the control port X2 of described first inserted valve 2 and the control of described second inserted valve 3
Liquefaction mouth X3 can be spring cavity, and wherein, described spring cavity, when there being External Force Acting, can make institute
State the first inserted valve 2 and described second inserted valve 3 completely closes.
The lock cylinder assembly provided based on the above embodiment of the present invention, is possible to prevent concrete pump shutting down
In time expecting, master cylinder (the first oil cylinder 7) is return by concrete compression in conveying pipe, thus reduces mixed
Solidifying soil plugging probability, promotes the overall performance of concrete pump.
Preferably, the first actuator port P of described electromagnetic valve 1 can be with described first check valve 5
Outlet connect, the entrance of described first check valve 5 can be with the rodless cavity of described first oil cylinder 7
Connect；Second actuator port T of described electromagnetic valve 1 can connect drainback passage.
Preferably, described lock cylinder assembly can also include fuel tank, and wherein, described fuel tank can pass through
Way to cycle oil is connected with the second actuator port T of described electromagnetic valve 1.
In a preferred embodiment of the invention, as it is shown in figure 1, described lock cylinder assembly is all right
Including second oil cylinder the 8, second check valve 6, wherein:
Described second oil cylinder 8, pushes away if being in for the second oil cylinder 8 before concrete pump quits work
Dynamic concrete operating mode, then when concrete pump quits work, according to the retroaction of concrete gravity,
Rodless cavity at described second oil cylinder 8 produces the second active force.
Preferably, the size of the pressure of described second active force is equal to conveying pipe concrete weight and institute
State the ratio of the second oil cylinder 8 rodless cavity area.
Described second check valve 6, for acting on described electromagnetic valve 1 by described second active force
First actuator port P.
Described first inserted valve 2 and described second inserted valve 3 are additionally operable to lead at described second active force
The 3rd actuator port A and the 4th actuator port B that cross described electromagnetic valve 1 are respectively acting on described
During the control port X3 of the control port X2 of the first inserted valve 2 and described second inserted valve 3,
Completely close, make the second oil cylinder 8 to move, thus lock described second oil cylinder 8.
By the above embodiment of the present invention, it is possible to prevent concrete pump shutting down master cylinder in time expecting
(described first oil cylinder 7 and described second oil cylinder 8) is return by concrete compression in conveying pipe, thus
Reduce concrete plugging probability, promote the overall performance of concrete pump.
Preferably, the first actuator port P of described electromagnetic valve 1 can be with described second check valve 6
Outlet connect, the entrance of described second check valve 6 can be with the rodless cavity of described second oil cylinder 8
Connect.
Preferably, the 3rd actuator port A of described electromagnetic valve 1 can be with described first inserted valve 2
Control port X2 connect, the first actuator port A2 of described first inserted valve 2 and the second work
Make hydraulic fluid port B2 can be connected with the rod chamber of the first oil cylinder 7 and the rod chamber of the second oil cylinder 8 respectively.
Preferably, the 4th actuator port B of described electromagnetic valve 1 can be with described second inserted valve 3
Control port X3 connect, the first actuator port A3 of described second inserted valve 3 and second work
Hydraulic fluid port B3 can respectively with the rodless cavity of described first oil cylinder 7 and the rodless cavity of described second oil cylinder 8
It is connected.
The lock cylinder assembly provided based on the above embodiment of the present invention, it is also possible to make master cylinder stop in motion
After Zhi, again will not move under external force.
Preferably, described external force is in addition to concrete gravity, it is also possible to include that other external world is applied to
The external active force of master cylinder.
In a preferred embodiment of the invention, as it is shown in figure 1, described lock cylinder assembly is all right
Including the 3rd check valve 4, the entrance of described 3rd check valve 4 connects oil pump 9, and the described 3rd is single
Outlet to valve 4 connects the first actuator port P of described electromagnetic valve 1, wherein:
Described 3rd check valve 4, for when concrete pump pump concrete, by described oil pump 9
The pressure oil of output acts on the first actuator port P of described electromagnetic valve 1.
Preferably, described pressure oil can be hydraulic oil.
Described controller can be also used for the first control end X and the by changing described electromagnetic valve 1
Two control end Y obtain electric situation, control described electromagnetic valve 1 and are in the second operating position or the 3rd
Operating position, wherein in the second operating position, the first actuator port P and of described electromagnetic valve 1
Three actuator port A connections, the second actuator port T and the 4th actuator port B connection；The 3rd
Operating position, in the first actuator port P and the 4th work of electromagnetic valve 1 described in the 3rd operating position
Hydraulic fluid port B connects, the second actuator port T and the 3rd actuator port A connection.
Preferably, obtaining electric at the first control end X of described electromagnetic valve 1, second controls end Y loses
During electricity, described electromagnetic valve 1 may be at the second operating position；The first control at described electromagnetic valve 1
End X dead electricity processed, when the second control end Y obtains electric, described electromagnetic valve 1 may be at the 3rd work
Position.
Preferably, as it is shown in figure 1, described second operating position can be the left position of electromagnetic valve；Institute
State the right position that the 3rd operating position can be electromagnetic valve.
Described electromagnetic valve 1 can be also used for when being in the second operating position, and pressure oil passes through institute
The 3rd actuator port A stating electromagnetic valve 1 acts on the control port of described first inserted valve 2,
To close described first inserted valve 2.
And the control port no pressure oil effect of the most described second inserted valve 3, described second plug-in mounting
Valve 3 is opened, and makes the first actuator port A3 and the second actuator port B3 of described second inserted valve 3
Communicate, thus connect rodless cavity and the rodless cavity of described second oil cylinder 8 of described first oil cylinder 7.
Described oil pump 9 can be also used at the rodless cavity of described first oil cylinder 7 and described second oil cylinder
When the rodless cavity of 8 is connected, pressure oil is transported to described first oil cylinder 7 and described second oil cylinder 8,
Described first oil cylinder 7 and described second oil cylinder 8 is made repeatedly to move.
In a preferred embodiment of the invention, described electromagnetic valve 1 can be also used for being in
During three operating positions, pressure oil is acted on institute by the 4th actuator port B of described electromagnetic valve 1
State the control port of the second inserted valve 3, to close described second inserted valve 3.
And the control port no pressure oil effect of the most described first inserted valve 2, described first plug-in mounting
Valve 2 is opened, and makes the first actuator port A2 and the second actuator port B2 of described first inserted valve 2
Communicate, thus the rod chamber of the rod chamber and described second oil cylinder 8 connecting described first oil cylinder 7 connects
Logical.
Described oil pump 9 can be also used at the rod chamber of described first oil cylinder 7 and described second oil cylinder
When the rod chamber of 8 is connected, pressure oil is transported to described first oil cylinder 7 and described second oil cylinder 8,
Described first oil cylinder 7 and described second oil cylinder 8 is made repeatedly to move.
According to one embodiment of present invention, a kind of concrete pump includes as above institute in any embodiment
The lock cylinder assembly stated.
The concrete pump provided based on the above embodiment of the present invention, is possible to prevent concrete pump shutting down
In time expecting, master cylinder is carried in pipe concrete compression and is return, thus reduces concrete plugging probability,
Promote the overall performance of concrete pump.
Fig. 2 is the schematic diagram that the present invention locks one embodiment of cylinder method.Preferably, the present embodiment can
Lock cylinder assembly as shown in Figure 1 performs.The method comprises the following steps:
Step 201, when concrete pump quits work, oil pump 9 stops pressure oil output, electromagnetism
First control end of valve 1 and second controls the equal dead electricity of end, and described electromagnetic valve 1 is in the first working position
Put, wherein in the first operating position, the first actuator port of described electromagnetic valve 1 and the 3rd working oil
Mouthful, the 4th actuator port connection, the second actuator port and the first actuator port, the 3rd actuator port,
4th actuator port is non-conduction.
Step 202, if oil cylinder 7 is in promotion concrete operating mode before concrete pump quits work,
Then when concrete pump quits work, concrete gravity reacts on described first oil cylinder 7, in institute
The rodless cavity stating the first oil cylinder 7 produces the first active force.
Preferably, the size of the pressure of described first active force is equal to conveying pipe concrete weight and institute
State the ratio of the first oil cylinder 7 rodless cavity area.
Step 203, described first active force acts on described electromagnetic valve 1 by the first check valve 5
The first actuator port, and by the 3rd actuator port of described electromagnetic valve 1 and the 4th actuator port
It is respectively acting on described first inserted valve 2 and the control port of described second inserted valve 3, makes described
First inserted valve 2 and described second inserted valve 3 completely close, and described first oil cylinder 7 cannot move,
Thus lock described first oil cylinder 7.
The lock cylinder method provided based on the above embodiment of the present invention, is possible to prevent concrete pump shutting down
In time expecting, master cylinder (the first oil cylinder 7) is return by concrete compression in conveying pipe, thus reduces mixed
Solidifying soil plugging probability, promotes the overall performance of concrete pump.
Fig. 3 is the schematic diagram that the present invention locks cylinder another embodiment of method.Preferably, the present embodiment can
Performed by lock cylinder assembly.After the step 201 of embodiment illustrated in fig. 2, described method is all right
Including:
Step 301, if the second oil cylinder 8 is in promotion concreter before concrete pump quits work
Condition, then when concrete pump quits work, concrete gravity reacts on described second oil cylinder 8,
Rodless cavity at described second oil cylinder 8 produces the second active force.
Preferably, the size of the pressure of described second active force is equal to conveying pipe concrete weight and institute
State the ratio of the second oil cylinder 8 rodless cavity area.
Step 302, described second active force acts on described electromagnetic valve 1 by the second check valve 6
The first actuator port, and by the 3rd actuator port of described electromagnetic valve 1 and the 4th actuator port
It is respectively acting on described first inserted valve 2 and the control port of described second inserted valve 3, makes described
First inserted valve 2 and described second inserted valve 3 completely close, and described second oil cylinder 8 cannot move,
Thus lock described second oil cylinder 8.
By the embodiment described in Fig. 3, it is possible to prevent concrete pump shutting down master cylinder (institute in time expecting
State the first oil cylinder 7 and described second oil cylinder 8) return by concrete compression in conveying pipe, thus reduce
Concrete plugging probability, promotes the overall performance of concrete pump.
Fig. 4 is that the concrete pump pumping that in one embodiment of the invention, the present invention comprises lock cylinder assembly is mixed
The schematic diagram of solidifying soil.Described method includes:
Step 401, when concrete pump pump concrete, the pressure oil of described oil pump 9 output leads to
The first actuator port of described electromagnetic valve 1 is acted on after crossing the 3rd check valve 4.
Step 402, controller controls end by the first control end and second of described electromagnetic valve 1
Obtain electric situation, control described electromagnetic valve 1 and be in the second operating position or the 3rd operating position, wherein
In the second operating position, the first actuator port of described electromagnetic valve 1 and the connection of the 3rd actuator port,
Second actuator port and the connection of the 4th actuator port；In the 3rd operating position, described electromagnetic valve 1
First actuator port and the connection of the 4th actuator port, the second actuator port and the 3rd actuator port are even
Logical.
Preferably, obtaining electric at the first control end X of described electromagnetic valve 1, second controls end Y loses
During electricity, described electromagnetic valve 1 is in the second operating position；The first control end at described electromagnetic valve 1
X dead electricity, when the second control end Y obtains electric, described electromagnetic valve 1 is in the 3rd operating position.
Step 403, when described electromagnetic valve 1 is in the second operating position, pressure oil is by described
3rd actuator port of electromagnetic valve 1 acts on the control port of described first inserted valve 2, makes described
First inserted valve 2 is closed；And the control port no pressure oil effect of described second inserted valve 3, institute
State the second inserted valve 3 to open, make the first actuator port A3 and second of described second inserted valve 3
Actuator port B3 communicates, thus connects the rodless cavity of described first oil cylinder 7 and described second oil cylinder
The rodless cavity of 8.
Step 404, described oil pump 9 is at the rodless cavity of described first oil cylinder 7 and described second oil cylinder
When the rodless cavity of 8 is connected, pressure oil is transported to described first oil cylinder 7 and described second oil cylinder 8,
Described first oil cylinder 7 and described second oil cylinder 8 is made repeatedly to move.
Preferably, after step 402, described method can also include:
Step 405, when described electromagnetic valve 1 is in three operating positions, pressure oil is by described
4th actuator port of electromagnetic valve 1 acts on the control port of described second inserted valve 3, makes described
Second inserted valve 3 is closed；And the control port no pressure oil effect of described first inserted valve 2, institute
State the first inserted valve 2 to open, make the first actuator port A2 and second of described first inserted valve 2
Actuator port B2 communicates, thus connects the rod chamber of described first oil cylinder 7 and described second oil cylinder
The rod chamber of 8 is connected.
Step 406, described oil pump 9 is at the rod chamber of described first oil cylinder 7 and described second oil cylinder
When the rod chamber of 8 is connected, pressure oil is transported to described first oil cylinder 7 and described second oil cylinder 8,
Described first oil cylinder 7 and described second oil cylinder 8 is made repeatedly to move.
So far, the present invention is described in detail and locks cylinder method and apparatus and concrete pump.In order to
Avoid covering the design of the present invention, do not describe details more known in the field.This area skill
Art personnel are as described above, complete it can be appreciated how implement technical scheme disclosed herein.
One of ordinary skill in the art will appreciate that all or part of step realizing above-described embodiment
Can be completed by hardware, it is also possible to instruct relevant hardware by program and complete, described
Program can be stored in a kind of computer-readable recording medium, and storage medium mentioned above is permissible
It is read only memory, disk or CD etc..
Description of the invention is given for the sake of example and description, and is not exhaustively
Or it limit the invention to disclosed form.Many modifications and variations are for the common skill of this area
It is obvious for art personnel.Selecting and describing embodiment is the principle in order to the present invention is more preferably described
Apply with reality, and make those of ordinary skill in the art it will be appreciated that the present invention thus design is suitable
The various embodiments with various amendments in special-purpose.
Claims (13)
1. a lock cylinder method, it is characterised in that including:
When concrete pump quits work, oil pump (9) stops pressure oil output, electromagnetic valve (1)
First control end and second control the equal dead electricity of end, described electromagnetic valve (1) is in the first working position
Put, wherein in the first operating position, the first actuator port of described electromagnetic valve (1) and the 3rd work
Make hydraulic fluid port, the 4th actuator port connection, the second actuator port and the first actuator port, the 3rd work
Hydraulic fluid port, the 4th actuator port are non-conduction；
If before concrete pump quits work, the first oil cylinder (7) is in promotion concrete operating mode, then
When concrete pump quits work, concrete gravity reacts on described first oil cylinder (7), in institute
The rodless cavity stating the first oil cylinder (7) produces the first active force；
Described first active force acts on the of described electromagnetic valve (1) by the first check valve (5)
One actuator port, and pass through the 3rd actuator port and the 4th actuator port of described electromagnetic valve (1)
It is respectively acting on control port and the control port of the second inserted valve (3) of the first inserted valve (2),
Make described first inserted valve (2) and described second inserted valve (3) completely close, thus lock institute
State the first oil cylinder (7).
2. lock cylinder method as claimed in claim 1, it is characterised in that also include:
If before concrete pump quits work, the second oil cylinder (8) is in promotion concrete operating mode, then
When concrete pump quits work, concrete gravity reacts on described second oil cylinder (8), in institute
The rodless cavity stating the second oil cylinder (8) produces the second active force；
Described second active force acts on the of described electromagnetic valve (1) by the second check valve (6)
One actuator port, and pass through the 3rd actuator port and the 4th actuator port of described electromagnetic valve (1)
It is respectively acting on described first inserted valve (2) and the control port of described second inserted valve (3),
Make described first inserted valve (2) and described second inserted valve (3) completely close, thus lock institute
State the second oil cylinder (8).
3. lock cylinder method as claimed in claim 2, it is characterised in that
The size of the pressure of described first active force is equal to conveying pipe concrete weight and described first
The ratio of oil cylinder (7) rodless cavity area；
The size of the pressure of described second active force is equal to conveying pipe concrete weight and described second
The ratio of oil cylinder (8) rodless cavity area.
4. lock cylinder method as claimed in claim 2, it is characterised in that also include:
When concrete pump pump concrete, the pressure oil that described oil pump (9) exports passes through the 3rd
The first actuator port of described electromagnetic valve (1) is acted on after check valve (4)；
Controller by described electromagnetic valve (1) first control end and second control end electric feelings
Condition, controls described electromagnetic valve (1) and is in the second operating position or the 3rd operating position, Qi Zhong
Second operating position, the first actuator port of described electromagnetic valve (1) and the connection of the 3rd actuator port,
Second actuator port and the connection of the 4th actuator port；In the 3rd operating position, described electromagnetic valve (1)
The first actuator port and the connection of the 4th actuator port, the second actuator port and the 3rd actuator port company
Logical；
When described electromagnetic valve (1) is in the second operating position, pressure oil passes through described electromagnetic valve
(1) the 3rd actuator port acts on the control port of described first inserted valve (2), makes described
First inserted valve (2) is closed, described second inserted valve (3) is opened, to connect described first oil
The rodless cavity of cylinder (7) and the rodless cavity of described second oil cylinder (8)；
Described oil pump (9) is at the rodless cavity of described first oil cylinder (7) and described second oil cylinder (8)
Rodless cavity connect time, pressure oil is transported to described first oil cylinder (7) and described second oil cylinder
(8), described first oil cylinder (7) and described second oil cylinder (8) is made repeatedly to move.
5. lock cylinder method as claimed in claim 4, it is characterised in that also include:
When described electromagnetic valve (1) is in three operating positions, pressure oil passes through described electromagnetic valve
(1) the 4th actuator port acts on the control port of described second inserted valve (3), makes described
Second inserted valve (3) is closed, described first inserted valve (2) is opened, to connect described first oil
The rod chamber of cylinder (7) and the rod chamber of described second oil cylinder (8)；
Described oil pump (9) is at the rod chamber of described first oil cylinder (7) and described second oil cylinder (8)
Rod chamber connect time, pressure oil is transported to described first oil cylinder (7) and described second oil cylinder
(8), described first oil cylinder (7) and described second oil cylinder (8) is made repeatedly to move.
6. a lock cylinder assembly, it is characterised in that include controller, oil pump (9), electromagnetic valve
(1), the first oil cylinder (7), the first check valve (5), the first inserted valve (2) and the second plug-in mounting
Valve (3), wherein:
Described controller, for when concrete pump quits work, disconnects described electromagnetic valve (1)
First control end and second control end power supply, and indicate described oil pump (9) stop output pressure
Power oil；
Described oil pump (9), for the instruction according to described controller, when concrete pump quits work
Time, stop pressure oil output；
Described electromagnetic valve (1), controls for the first control end and second at described electromagnetic valve (1)
During the equal dead electricity of end processed, it is in the first operating position, wherein in the first operating position, described electromagnetic valve
(1) the first actuator port and the 3rd actuator port, the 4th actuator port connection, the second work
Hydraulic fluid port and the first actuator port, the 3rd actuator port, the 4th actuator port are non-conduction；
Described first oil cylinder (7), if for the first oil cylinder (7) before concrete pump quits work
It is in promotion concrete operating mode, then when concrete pump quits work, anti-according to concrete gravity
Effect, the rodless cavity described first oil cylinder (7) produces the first active force；
Described first check valve (5), for acting on described electromagnetic valve (1) by described first active force
The first actuator port；
Described first inserted valve (2) and described second inserted valve (3), for making described first
Firmly it is respectively acting on by the 3rd actuator port and the 4th actuator port of described electromagnetic valve (1)
During the control port of the control port of described first inserted valve (2) and described second inserted valve (3),
Completely close, thus lock described first oil cylinder (7).
Lock cylinder assembly the most as claimed in claim 6, it is characterised in that also include the second oil cylinder
(8), the second check valve (6), wherein:
Described second oil cylinder (8), if for the second oil cylinder (8) before concrete pump quits work
It is in promotion concrete operating mode, then when concrete pump quits work, anti-according to concrete gravity
Effect, the rodless cavity described second oil cylinder (8) produces the second active force；
Described second check valve (6), for acting on described electromagnetic valve (1) by described second active force
The first actuator port；
Described first inserted valve (2) and described second inserted valve (3) are additionally operable to make described second
Firmly it is respectively acting on by the 3rd actuator port and the 4th actuator port of described electromagnetic valve (1)
During the control port of described first inserted valve (2) and described second inserted valve (3), completely close,
Thus lock described second oil cylinder (8).
Lock cylinder assembly the most as claimed in claim 7, it is characterised in that
The size of the pressure of described first active force is equal to conveying pipe concrete weight and described first
The ratio of oil cylinder (7) rodless cavity area；
The size of the pressure of described second active force is equal to conveying pipe concrete weight and described second
The ratio of oil cylinder (8) rodless cavity area.
Lock cylinder assembly the most as claimed in claim 7, it is characterised in that also include that the 3rd is unidirectional
Valve (4), wherein:
Described 3rd check valve (4), for when concrete pump pump concrete, by described oil pump
(9) pressure oil exported acts on the first actuator port of described electromagnetic valve (1)；
Described controller is additionally operable to the first control end and second by changing described electromagnetic valve (1)
Control end obtains electric situation, controls described electromagnetic valve (1) and is in the second operating position or the 3rd work
Make position, wherein in the second operating position, the first actuator port of described electromagnetic valve (1) and
Three actuator port connections, the second actuator port and the connection of the 4th actuator port；In the 3rd operating position,
First actuator port of described electromagnetic valve (1) and the connection of the 4th actuator port, the second actuator port
Connect with the 3rd actuator port；
Described electromagnetic valve (1) is additionally operable to when being in the second operating position, and pressure oil passes through institute
The 3rd actuator port stating electromagnetic valve (1) acts on the control port of described first inserted valve (2),
To close described first inserted valve (2), to open described second inserted valve (3), thus described first
The rodless cavity of oil cylinder (7) is connected with the rodless cavity of described second oil cylinder (8)；
Described oil pump (9) be additionally operable to described first oil cylinder (7) rodless cavity and described second oil
When the rodless cavity of cylinder (8) is connected, pressure oil is transported to described first oil cylinder (7) and described the
Two oil cylinders (8), make described first oil cylinder (7) and described second oil cylinder (8) repeatedly move.
Lock cylinder assembly the most as claimed in claim 9, it is characterised in that
Described electromagnetic valve (1) is additionally operable to when being in three operating positions, and pressure oil passes through institute
The 4th actuator port stating electromagnetic valve (1) acts on the control port of described second inserted valve (3),
To close described second inserted valve (3), to open described first inserted valve (2), thus described first
The rod chamber of oil cylinder (7) is connected with the rod chamber of described second oil cylinder (8)；
Described oil pump (9) be additionally operable to described first oil cylinder (7) rod chamber and described second oil
When the rod chamber of cylinder (8) is connected, pressure oil is transported to described first oil cylinder (7) and described the
Two oil cylinders (8), make described first oil cylinder (7) and described second oil cylinder (8) repeatedly move.
11. lock cylinder assembly as claimed in claim 6, it is characterised in that also include fuel tank, its
In, described fuel tank is connected with the second actuator port of described electromagnetic valve (1) by way to cycle oil.
The 12. lock cylinder assemblies as according to any one of claim 6 to 11, it is characterised in that
Described electromagnetic valve (1) is three-position four-way electromagnetic directional valve.
13. 1 kinds of concrete pumps, it is characterised in that include as any in claim 6 to 12
One described lock cylinder assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410213113.XA CN103982411B (en) | 2014-05-20 | 2014-05-20 | Lock cylinder method and apparatus and concrete pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410213113.XA CN103982411B (en) | 2014-05-20 | 2014-05-20 | Lock cylinder method and apparatus and concrete pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103982411A CN103982411A (en) | 2014-08-13 |
| CN103982411B true CN103982411B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410213113.XA Active CN103982411B (en) | 2014-05-20 | 2014-05-20 | Lock cylinder method and apparatus and concrete pump |
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| Country | Link |
|---|---|
| CN (1) | CN103982411B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5316453A (en) * | 1992-03-19 | 1994-05-31 | Friedrich Wilh. Schwing Gmbh | Slurry pump with discharge cylinders, especially two-cylinder concrete pump |
| CN202338524U (en) * | 2011-12-07 | 2012-07-18 | 中联重科股份有限公司 | Closed hydraulic system of pumping device |
| CN203189396U (en) * | 2013-02-27 | 2013-09-11 | 徐州徐工施维英机械有限公司 | Concrete pump truck pumping main oil cylinder locking mechanism |
| CN103591064A (en) * | 2013-11-18 | 2014-02-19 | 长沙中联消防机械有限公司 | Landing leg control hydraulic system and engineering vehicle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100606203B1 (en) * | 2004-04-19 | 2006-07-31 | 주식회사 디앤에스 | A concrete-mortar transfer system of concrete pump car |
-
2014
- 2014-05-20 CN CN201410213113.XA patent/CN103982411B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5316453A (en) * | 1992-03-19 | 1994-05-31 | Friedrich Wilh. Schwing Gmbh | Slurry pump with discharge cylinders, especially two-cylinder concrete pump |
| CN202338524U (en) * | 2011-12-07 | 2012-07-18 | 中联重科股份有限公司 | Closed hydraulic system of pumping device |
| CN203189396U (en) * | 2013-02-27 | 2013-09-11 | 徐州徐工施维英机械有限公司 | Concrete pump truck pumping main oil cylinder locking mechanism |
| CN103591064A (en) * | 2013-11-18 | 2014-02-19 | 长沙中联消防机械有限公司 | Landing leg control hydraulic system and engineering vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103982411A (en) | 2014-08-13 |
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