CN206917834U - A kind of enclosed pumping system concrete piston automatic retracting device - Google Patents
A kind of enclosed pumping system concrete piston automatic retracting device Download PDFInfo
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- CN206917834U CN206917834U CN201720709764.7U CN201720709764U CN206917834U CN 206917834 U CN206917834 U CN 206917834U CN 201720709764 U CN201720709764 U CN 201720709764U CN 206917834 U CN206917834 U CN 206917834U
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Abstract
The utility model is a kind of enclosed pumping system concrete piston automatic retracting device, described enclosed pumping system includes washing chamber and at least two groups of structure identical pumps, every group of pump is mainly made up of concrete conveying cylinder, concrete piston, master cylinder, proximity switch, locating oil cylinder and control system, it is characterised in that：Described concrete piston automatic retracting device is provided with control system oil circuit and the adjusting means coordinated with proximity switch, and described control system oil circuit makes what main oil pump participated in concrete piston to retract the course of work by setting accumulator to improve the pressure of pressure oil, by setting magnetic valve come the electrical interlocks function of realization device, by resetting control oil circuit.The utility model, which avoids concrete piston, to be pushed away the problem of motionless and occurs, solve device fabrication system caused by error problem, also eliminate the potential safety hazard during system acting, and realize the Rapid reset of concrete piston.
Description
Technical field
A kind of concrete pump enclosed pumping system is the utility model is related to, particularly discloses a kind of enclosed pumping system concrete
Piston automatic retracting device.
Background technology
Concrete pump is the principle using plunger, and the construction machine of concrete continuous conveying casting is realized by moving back and forth
Tool.Concrete piston is the crucial consumable accessory of pumping system, it is necessary to running check or replacing, if damaging and changing occur in concrete piston
Not in time, it would be possible to concrete conveying cylinder or spillage are scratched, so as to result in greater loss.
During concrete pump normal work, concrete piston is in concrete conveying cylinder, can not be checked and be changed, it is necessary to return to and wash
Washing interior can be checked and be changed, while must effectively be locked concrete piston position, and then avoid security incident
Occur.
Closed type hydraulic system is one of conventional hydraulic system of concrete pump, using very extensive.Closed type hydraulic system
General principle is main oil pump direct drive master cylinder, without intermediate link, changes master cylinder by the commutation of main oil pump swash plate
The direction of motion, have the characteristics that energy-conservation, commutation are steady, impact is small.
Chinese patent application：201120446966.X disclose concrete piston in enclosed pumping system moves back piston apparatus automatically
Technology contents, see accompanying drawing 1, pumping system is provided with two nested structure identical pumps, the first master cylinder 401, second lead
Respective design has the first locating oil cylinder 701, the second locating oil cylinder 702, two locating oil cylinder parallel connections, by repairing to oil cylinder 402 below
Pump 1400 provides pressure oil.During work, the first locating oil cylinder piston 801, the second spacing oil are accordingly pinned by check valve 1300
Cylinder piston 802, and then the stroke of two master cylinders is limited, the first concrete piston 201, the second concrete piston 202 is moved back at work
Return in washing chamber 300；Commutated by the work of proximity switch or liquid controlled reversing control main oil pump.Need to check, change first
When concrete piston 201, the second concrete piston 202, the magnetic valve of locating oil cylinder, i.e. the first magnetic valve 1201 and second solenoid valve are opened
1202, pressure oil is provided simultaneously to the first master cylinder 401, the second master cylinder 402 by slippage pump 1400, allows two concrete pistons same
When return in washing chamber 300.During reset, by slippage pump 1400 simultaneously to the first locating oil cylinder 701, the second locating oil cylinder 702
It is corresponding to promote the first concrete piston 201, the second concrete piston 202 to reset for pressure oil.
But there is problems with and shortcoming in above-mentioned patent：
1st, repairing pump pressure is relatively low, only 3~4MP02, it is understood that there may be pushes away motionless phenomenon；
If the 2, controlling the work of main oil pump to commutate using liquid controlled reversing, complicated, cost is higher；
If the 3, controlling the work of master cylinder to commutate using proximity switch, because proximity switch needs to detect master cylinder work
The position of plug, so to be arranged on oil cylinder, its position can not arbitrarily be adjusted, so the manufacture system that can not make up equipment produces
Error；
4th, when checking, changing concrete piston, pumping system does not have interlock function, it is necessary to which power cut could be ensured into peace
Entirely.If operated in the case where power is not cut off, potential safety hazard be present；
5th, the discharge capacity of slippage pump is smaller, causes concrete piston reset speed slow.
The content of the invention
The purpose of this utility model is that solve the defects of prior art, and it is automatic to design a kind of enclosed pumping system concrete piston
Retraction means, control oil circuit main oil pump is participated in the homing action of concrete piston by setting up to reset, realize replying immediately soon for concrete piston
Position, increase electrical interlocks function ensure in concrete piston fall back process it is safe to use, be designed to ensure that proximity switch using adjustable
Being cooperated with adjusting means realizes the function that can make up device fabrication systematic error.
What the utility model was realized in：A kind of enclosed pumping system concrete piston automatic retracting device, described closes
Formula pumping system includes washing chamber and at least two groups of structure identical pumps, every group of pump mainly by concrete conveying cylinder,
Concrete piston, master cylinder, proximity switch, locating oil cylinder and control system composition, described master cylinder are lived by master cylinder cylinder, master cylinder
Plug, main oil cylinder piston bar composition, described locating oil cylinder are made up of locating oil cylinder cylinder barrel and locating oil cylinder piston, and described concrete is defeated
Cylinder and master cylinder is sent to be arranged in washing chamber, described locating oil cylinder is arranged on master cylinder, and described concrete piston is arranged on main oil
On cylinder piston rod, and moved back and forth in concrete conveying cylinder, it is characterised in that：The control system of the concrete piston automatic retracting device
Including control system oil circuit, described control system oil circuit connects two master cylinders and two locating oil cylinders in two groups of pumps,
The control system oil circuit is provided with four magnetic valves, respectively the first magnetic valve, second solenoid valve, the 3rd magnetic valve and the 4th electricity
Magnet valve, is provided with the first magnetic valve on the main oil pump of the pumping system, the first locating oil cylinder and the second locating oil cylinder without bar
Chamber is simultaneously provided with the 4th magnetic valve after connecing, and rod chamber of the 4th described magnetic valve also with two master cylinders is connected, and in connection oil circuit
On be provided with second solenoid valve, the 3rd described magnetic valve is described on the connection oil circuit between the rodless cavity of two master cylinders
Four magnetic valves be connected with fuel tank by being connected oil circuit, the connection oil circuit between described second solenoid valve and fuel tank is provided with
Overflow valve.
The 4th magnetic valve connection accumulator of described control system oil circuit, is additionally provided with unidirectional on both connection oil circuits
Valve, described accumulator will be supplied to the boost in pressure of the pressure oil of two master cylinders to 16MPa.
Described proximity switch is arranged on master cylinder or on locating oil cylinder, and the master cylinder of every group of pump is lived
Stopper rod is provided with the adjusting means being engaged with proximity switch, corresponding with the installation site of the proximity switch, realizes to equipment
The error of manufacture system generation is made up, and described adjusting means includes multi-disc adjustment ring and detection ring.The adjusting means
Adjustment ring can be designed to identical or different thickness as needed, described adjusting means is installed on main oil cylinder piston bar end
When, also need to set up guide ring, collided when avoiding main oil cylinder piston bar from being moved reciprocatingly in master cylinder, described regulation dress
Put is by adjustment ring and the adjustment of detection ring position, obtaining detecting ring and the different distance of proximity switch setting to realize to make up
The error of standby manufacture system generation.
The utility model enclosed pumping system is as follows with the control method of concrete piston automatic retracting device.
Concrete piston retracts the course of work：When needing to check, changing concrete piston, start piston and retract button, same to time control
The interlock function of system processed starts, by the first magnetic valve, second solenoid valve, the state solution of the 3rd magnetic valve and the 4th magnetic valve
Lock, while pump function button state is locked, into the non-serviceable state of pump function, the 4th magnetic valve, the 3rd electromagnetism
Valve obtain it is electric, second solenoid valve obtain it is electric be in R positions, the pressure oil in accumulator enters respectively by the 4th magnetic valve, second solenoid valve
Enter the rod chamber of two master cylinders in two groups of pumps, main oil cylinder piston and main oil cylinder piston bar are retracted simultaneously, and drives
Concrete piston is retracted simultaneously, and the pressure oil in master cylinder rodless cavity enters fuel tank by the 3rd magnetic valve, and the signal of proximity switch closes
Close, two main oil cylinder piston bars in two groups of pumps promote each self-corresponding locating oil cylinder piston to continue to retract respectively, two groups
The pressure oil in two locating oil cylinders in pump enters fuel tank by the 4th magnetic valve, and two concretes in two groups of pumps are lived
Plug is returned in washing chamber, is completed piston and is retracted the course of work.
Concrete piston resets the course of work：When concrete piston inspection, change and complete, start piston reset button, the 4th electromagnetism
Valve, the 3rd magnetic valve dead electricity, and second solenoid valve obtain it is electric be in L positions, second solenoid valve the electric time by time controller control
Make, the pressure oil in accumulator is respectively enterd by the 4th magnetic valve in two locating oil cylinders in two groups of pumps, is promoted each
Self-corresponding locating oil cylinder piston is released, and accordingly drives main oil cylinder piston bar, main oil cylinder piston and concrete piston to release together, is pushed away
During going out, the rodless cavity repairing of the first master cylinder 401, the second master cylinder 402, two master cylinders are given respectively by accumulator 1700
Pressure oil in rod chamber flows into fuel tank by overflow valve, and overflow valve presets pressure value, eliminates in concrete piston reseting procedure
The nonsynchronous phenomenon of two master cylinders caused by the difference of load, due to the effect of overflow valve, two groups are kept in push
The main oil cylinder piston of first group of pump in pump, main oil cylinder piston bar and concrete piston position are motionless, by setting
After time, the first magnetic valve obtain it is electric be in R positions, the main oil pump of pumping system starts, and pressure oil enters second group of pump
The rodless cavity of master cylinder, quickly shift the main oil cylinder piston of this group of pump, main oil cylinder piston bar and concrete piston onto bottom, control
The interlock function of system processed starts, by the status lock of the first magnetic valve, second solenoid valve, the 3rd magnetic valve and the 4th magnetic valve
Fixed, in pumping work state, these magnetic valves will not work, and resets and completes.
Pumping work process is：4th magnetic valve dead electricity, the pressure oil in accumulator are respectively enterd by the 4th magnetic valve
Two locating oil cylinders in two groups of pumps, then two locating oil cylinder pistons are limited to accordingly respectively under the cooperation of check valve
The front end of locating oil cylinder, and drive corresponding main oil cylinder piston bar to move, two concrete pistons are shifted onto in two concrete conveying cylinders respectively,
3rd magnetic valve dead electricity, second solenoid valve is in an intermediate position, and the first magnetic valve is in an intermediate position, while control system is mutual
Lock function starts, by the first magnetic valve, second solenoid valve, the state locking of the 3rd magnetic valve and the 4th magnetic valve, in pumping work
When making state, these magnetic valves will not work, and the pressure oil in the main oil pump of pumping system enters in two groups of pumps
The rodless cavity of first group of master cylinder, the main oil cylinder piston of this group of pump is set to drive corresponding main oil cylinder piston bar and concrete piston
Release, meanwhile, the master cylinder that the pressure oil in the rod chamber of the master cylinder of this group of pump enters in second group of pump
Rod chamber, the main oil cylinder piston in second group of pump and main oil cylinder piston bar is retracted together, drive corresponding concrete to live
Plug is retracted, and when main oil cylinder piston returns to test position, corresponding proximity switch sends signal, and the main oil pump of pumping system is opened
Begin to commutate, pressure oil enters the rodless cavity of the master cylinder of second group of pump, makes the master cylinder of second group of pump
Piston driving main oil cylinder piston bar is released, and drives concrete piston to release, meanwhile, the rod chamber of the master cylinder of second group of pump
Interior pressure oil enters the rod chamber of the master cylinder of first group of pump, makes main oil cylinder piston and the master of first group of pump
Cylinder piston rod is retracted, and drives concrete piston to retract, when the main oil cylinder piston of first group of pump returns to test position,
Corresponding proximity switch sends signal, and the main oil pump of pumping system starts to commutate, and completes a working cycles.
Concrete piston is retracted in the course of work, and no matter whether power cuts off, the 4th magnetic valve, the 3rd magnetic valve always it is electric,
And second solenoid valve obtain it is electric after be constantly in R positions, the pressure being full of always in the rod chamber of two master cylinders in two groups of pumps
Power oil is hydraulic oil, and the rodless cavity of two master cylinders and two locating oil cylinders connect with fuel tank always, therefore two concrete pistons are locked in and moved back
Return is put, and prevents unexpected generation, ensures the safety of operating personnel.
During pumping work, two locating oil cylinder pistons of two groups of pumps are respectively restricted in corresponding locating oil cylinder
Front end, play a part of limit two main oil cylinder piston bars, to prevent two concrete pistons from being retracted in the presence of service load
To washing chamber.
The beneficial effects of the utility model are：The utility model design provides pressure by accumulator, and operating pressure is carried
16MP02 is raised to, concrete piston is avoided and pushes away the problem of motionless and occur.The utility model controls the work of master cylinder using proximity switch
Commutate, while adjusting means is designed with main oil cylinder piston, can arbitrarily adjust as needed, equipment is made up for realizing
Error caused by manufacture system.Adjusting means is simple in construction, is easy to implement.The utility model also add electrical interlocks function,
Eliminate the potential safety hazard during system acting.During work, the magnetic valve required for moving back concrete piston carries out latched position, it is ensured that
Concrete piston will not occur because of worker's maloperation and retract phenomenon；And when needing to check, changing concrete piston, employ a key and retract and set
Meter, pump function locking, no matter whether system dynamic cuts off, all without safety problem being present.Meanwhile the utility model adds
Control oil circuit so that main oil pump participates in concrete piston and retracts action process, increases operating pressure, and replying immediately soon for concrete piston can be achieved
Position.
Brief description of the drawings
Fig. 1 is the concrete piston automatic retracting device structural representation of prior art enclosed pumping system.
Fig. 2 is the concrete piston automatic retracting device structural representation of the enclosed pumping system of the utility model embodiment 1.
Fig. 3 is the adjusting means structural representation of the utility model embodiment 2.
In figure：101st, the first concrete conveying cylinder；102nd, the second concrete conveying cylinder；201st, the first concrete piston；202nd, the second concrete
Piston；300th, washing chamber；401st, the first master cylinder；402nd, the second master cylinder；501st, the first main oil cylinder piston bar； 502、
Second main oil cylinder piston bar；601st, the first main oil cylinder piston；602nd, the second main oil cylinder piston；701st, the first locating oil cylinder；
702nd, the second locating oil cylinder；801st, the first locating oil cylinder piston；802nd, the second locating oil cylinder piston；901st, the first adjustment ring；
902nd, the second adjustment ring；1001st, the first detection ring；1002nd, the second detection ring；1101st, the first proximity switch；1102nd,
Two proximity switches；1201st, the first magnetic valve；1202nd, second solenoid valve；1203rd, the 3rd magnetic valve；1204th, the 4th electromagnetism
Valve；1300th, check valve；1400th, slippage pump；1500th, main oil pump；1600th, overflow valve；1700th, accumulator；1801st,
One guide ring；1802nd, the second guide ring；T, fuel tank.
Embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
With reference to the accompanying drawings 2 and accompanying drawing 3, the utility model enclosed pumping system include washing chamber with concrete piston automatic retracting device
At least two groups of structure identical pumps, every group of pump mainly by concrete conveying cylinder, concrete piston, master cylinder, close to opening
Close, locating oil cylinder and control system form.
By taking one group of pump as an example, the first master cylinder 401 is by master cylinder cylinder, the first main oil cylinder piston 601, the first main oil
Cylinder piston rod 501 is formed, and the first locating oil cylinder 701 is made up of locating oil cylinder cylinder barrel and the first locating oil cylinder piston 801.First concrete
The master cylinder 401 of conveying cylinder 101 and first is arranged in washing chamber 300, and the first locating oil cylinder 701 is arranged on the first master cylinder 401
On, the first concrete piston 201 is arranged on the first main oil cylinder piston bar 501, can be moved back and forth in the first concrete conveying cylinder 101.The
One proximity switch 1101 is arranged on the first master cylinder 401 or on the first locating oil cylinder 701.Adjusting means is adjusted by multi-disc first
The domain 901 and first detects ring 1001 and formed, and on the first main oil cylinder piston 601, the first main oil cylinder piston bar 501 is the
Moved reciprocatingly in one master cylinder 401.First adjustment ring 901 can be designed to same thickness as needed, can also be designed to
Different-thickness.When adjusting means is installed on the first main oil cylinder piston 501 end of bar, also needs to set up the first guide ring 1801, avoid
First main oil cylinder piston bar 501 collides when being moved reciprocatingly in the first master cylinder 401.
Described control system includes control system oil circuit, spacing with the first master cylinder 401, the second master cylinder 402, first
The locating oil cylinder 702 of oil cylinder 701 and second connects.Control system oil circuit is provided with four magnetic valves, respectively the first magnetic valve 1201,
Second solenoid valve 1202, the 3rd magnetic valve 1203 and the 4th magnetic valve 1204.
The first magnetic valve 1201, when the first magnetic valve 1201 is in L positions, the row of main oil pump 1500 are provided with main oil pump 1500
Amount increase；The discharge capacity of main oil pump 1500 is reduced when first magnetic valve 1201 is in R positions；When first magnetic valve 1201 is in middle position,
The discharge capacity of main oil pump 1500 is constant.
The rodless cavity of first locating oil cylinder 701 and the second locating oil cylinder 702 is simultaneously equipped with the 4th magnetic valve 1204, Zhi Houzai
Connect accumulator 1700.Set between the 4th described magnetic valve 1204 and accumulator 1700 and be additionally provided with check valve 1300, together
When, the 4th described magnetic valve 1204 connects with fuel tank T-phase.When the 4th described 1204 dead electricity of magnetic valve, in accumulator 1700
Pressure oil order it is spacing by respectively enteing the first locating oil cylinder 701 and second after check valve 1300, the 4th magnetic valve 1204
The rodless cavity of oil cylinder 702, by the first locating oil cylinder piston 801, the second locating oil cylinder piston 802 is released, and then promotes the first master
Oil cylinder piston 601, the second main oil cylinder piston 602 are released.When the 4th described magnetic valve 1204 must be electric, the first locating oil cylinder
701st, the pressure oil in the rodless cavity of the second locating oil cylinder 702 passes through the 4th described magnetic valve 1204 and enters fuel tank T.
The 4th described magnetic valve 1204 also with the first master cylinder 401, the second master cylinder 402 rod chamber and connect, and
Connect and second solenoid valve 1202 is set on oil circuit, fuel tank T is reconnected after described second solenoid valve 1202 connection overflow valve 1600.
When described second solenoid valve 1202 is in L positions, the first master cylinder 401, the second master cylinder 402 rod chamber in pressure oil
Order passes through described second solenoid valve 1202, overflow valve 1600 enters fuel tank T, and the pressure oil in accumulator 1700 is then through check valve
1300th, fuel tank T is entered after the 4th magnetic valve 1204, second solenoid valve 1202.When described second solenoid valve 1202 is in R positions
When, the pressure oil order in accumulator 1700 is entered respectively after check valve 1300, the 4th magnetic valve 1204, second solenoid valve 1202
In the rod chamber for entering the first master cylinder 401, the second master cylinder 402.When described second solenoid valve 1202 is in middle position, first
Master cylinder 401, the second master cylinder 402 rod chamber and fuel tank T, accumulator 1700 between oil circuit disconnect.
The 3rd is additionally provided with connection oil circuit between described the first master cylinder 401, the rodless cavity of the second master cylinder 402
Magnetic valve 1203, the 3rd described magnetic valve 1203 are connected to fuel tank T by oil circuit.When the described dead electricity of the 3rd magnetic valve 1203
When, the first master cylinder 401, the rodless cavity of the second master cylinder 402 and fuel tank T oil circuit disconnect；When the 3rd described magnetic valve
1203 it is electric when, the first master cylinder 401, the second master cylinder 402 rodless cavity in pressure oil enter through the 3rd magnetic valve 1203
Fuel tank T.
The utility model enclosed pumping system is as follows with the control method of concrete piston automatic retracting device.
1st, pumping work process：
The dead electricity of 4th magnetic valve 1204, the pressure oil in accumulator 1700 respectively enter two groups by the 4th magnetic valve 1204
The first locating oil cylinder 701, the second locating oil cylinder 702 of pump, it is then spacing by first under the cooperation of check valve 1300
Oil cylinder piston 801, the second locating oil cylinder piston 802 are limited to the first locating oil cylinder 701, the second locating oil cylinder 702 most respectively
Front end, drive the first main oil cylinder piston bar 501, the second main oil cylinder piston bar 502 to move, the first concrete piston 201, the second concrete are lived
Plug 202 is shifted onto in the first concrete conveying cylinder 101, the second concrete conveying cylinder 102 respectively.The dead electricity of 3rd magnetic valve 1203, second solenoid valve
1202 is in an intermediate position, and the first magnetic valve 1201 is in an intermediate position.The interlock function of control system starts simultaneously, by first
The state locking of magnetic valve 1201, second solenoid valve 1202, the 3rd magnetic valve 1203 and the 4th magnetic valve 1204, in pumping work
During state, these magnetic valves will not work.
Pressure oil in main oil pump 1500 enters the rodless cavity of the first master cylinder 401, drives the first main oil cylinder piston 601
First main oil cylinder piston bar 501 is released, and drives the first concrete piston 201 to release.Meanwhile in the rod chamber of the first master cylinder 501
Pressure oil enters the rod chamber of the second master cylinder 502, makes the second main oil cylinder piston 602 and the second main oil cylinder piston bar 502 together
Retract, drive the second concrete piston 202 to retract.When the second main oil cylinder piston 602 returns to test position, the second proximity switch
1102 send signal, and main oil pump 1500 starts to commutate, and pressure oil enters the rodless cavity of the second master cylinder 402, makes the second master cylinder
Piston 602 drives the second main oil cylinder piston bar 502 to release, and drives the second concrete piston 202 to release.Meanwhile second master cylinder 402
Pressure oil in rod chamber enters the rod chamber of the first master cylinder 501, makes the first main oil cylinder piston 601 and the first main oil cylinder piston
Bar 501 is retracted, and drives the first concrete piston 201 to retract.When the first main oil cylinder piston 601 returns to test position, first connects
Nearly switch 1101 sends signal, and main oil pump 1500 starts to commutate.Complete a working cycles.
In pumping work state, the first locating oil cylinder piston 801, the second locating oil cylinder piston 802 are respectively restricted in
The front end of first locating oil cylinder 701, the second locating oil cylinder 702, play the first main oil cylinder piston bar 501 of limitation, the second main oil
The effect of cylinder piston rod 502, to prevent the first concrete piston 201, the second concrete piston 202 to be retracted into the presence of service load
Washing chamber 300.
2nd, concrete piston retracts the course of work：
When needing to check, changing the first concrete piston 201, the second concrete piston 202, start piston and retract button, same to time control
The interlock function of system processed starts, by the first magnetic valve 1201, second solenoid valve 1202, the 3rd magnetic valve 1203 and the 4th electromagnetism
The states thereof of valve 1204, while pump function button state is locked, i.e., when being retracted into piston, pump function can not use
State.
4th magnetic valve 1204, the 3rd magnetic valve 1203 must be electric, and second solenoid valve 1202 electric must be in R positions, accumulator
Pressure oil in 1700 respectively enters the first master cylinder 401, the second main oil by the 4th magnetic valve 1204, second solenoid valve 1202
The rod chamber of cylinder 402, by the first main oil cylinder piston 601, the second main oil cylinder piston 602 and the first main oil cylinder piston bar 401, second
Main oil cylinder piston bar 502 is retracted simultaneously, and drives the first concrete piston 201, the second concrete piston 202 to retract simultaneously, and master cylinder is without bar
The pressure oil of intracavitary enters fuel tank T, the first proximity switch 1101, the letter of the second proximity switch 1102 by the 3rd magnetic valve 1203
Number close, the first main oil cylinder piston bar 501, the second main oil cylinder piston bar 502 promote the first locating oil cylinder piston 801, the respectively
Two locating oil cylinder pistons 802 continue to retract, and the pressure oil in the first locating oil cylinder 701, the second locating oil cylinder 702 is by the 4th electricity
Magnet valve 1204 enters fuel tank T, and the first concrete piston 201 and the second concrete piston 202 are returned in washing chamber 300, completes piston and retracts
The course of work.
In this course of work, no matter whether power cuts off, the 4th magnetic valve 1204, the 3rd magnetic valve 1203 always it is electric,
And second solenoid valve 1202 it is electric after be constantly in R positions, be full of always in the first master cylinder 401, the rod chamber of the second master cylinder 402
Pressure oil be hydraulic oil, the rodless cavity of the first master cylinder 401 and the second master cylinder 402, the first locating oil cylinder 701 and the second limit
Position oil cylinder 702 connects with fuel tank T always, therefore the first concrete piston 201, the second concrete piston 202 are locked in retracted position, prevent from anticipating
Outer generation, ensure the safety of operating personnel.
3rd, concrete piston resets the course of work：
When concrete piston inspection, change and complete, start piston reset button.
4th magnetic valve 1204, the dead electricity of the 3rd magnetic valve 1203, and second solenoid valve 1202 electric must be in L positions, the second electricity
The electric time that obtains of magnet valve 1202 is controlled by time controller, and the pressure oil in accumulator 1700 is distinguished by the 4th magnetic valve 1204
Into in the first locating oil cylinder 701, the second locating oil cylinder 702, the first locating oil cylinder piston 801, the second locating oil cylinder is promoted to live
Plug 802 is released, and accordingly drives the first main oil cylinder piston bar 501, the first main oil cylinder piston 601, the first concrete piston 201 and second
Main oil cylinder piston bar 502, the second main oil cylinder piston 602, the second concrete piston 202 are released together.During release, by accumulator
1700 give the rodless cavity repairing of the first master cylinder 401, the second master cylinder 402, the first master cylinder 401, the second master cylinder 402 respectively
Pressure oil in rod chamber flows into fuel tank T by overflow valve 1600.Overflow valve 1600 presets pressure value, eliminates concrete piston and answers
The first master cylinder 401 caused by the difference of load, 402 nonsynchronous phenomenon of the second master cylinder during position.Due to overflow
The effect of valve 1600, the second main oil cylinder piston 602, the second main oil cylinder piston bar 502 and the second concrete piston are kept in push
202 positions are motionless.
After setting time, the first magnetic valve 1201 it is electric be in R positions, main oil pump 1500 starts, and pressure oil is into the
The rodless cavity of one master cylinder 401, the first main oil cylinder piston 601, the first main oil cylinder piston bar 501 and the first concrete piston 201 is fast
Speed shifts bottom onto.The interlock function of control system starts, by the first magnetic valve 1201, second solenoid valve 1202, the 3rd magnetic valve
1203rd, the state locking of the 4th magnetic valve 1204, in pumping work state, these magnetic valves will not work.Reset and complete.
Embodiment 1：
With reference to the accompanying drawings 2, the first adjustment ring 901, the second adjustment ring 902 described in the present embodiment are respectively arranged in the first master
On oil cylinder piston 601, the second main oil cylinder piston 602, accordingly, the first proximity switch 1101, the peace of the second proximity switch 1102
Holding position is engaged with the installation site of first adjustment ring 901, the second adjustment ring 902.According to being actually needed, pass through adjustment
First adjustment ring 901, the second adjustment ring 902 and the first detection ring 1001, second detect the installation site of ring 1002, can obtain
The different distance of ring and proximity switch is detected, so as to make up error caused by manufacture system.
Embodiment 2：
With reference to the accompanying drawings 3, adjusting means is arranged on the first main oil cylinder piston bar 501, the second master cylinder is lived in the utility model
The end of stopper rod 502, accordingly, the first proximity switch 1101, the installation site of the second proximity switch 1102 will also fill according to regulation
The installation site put and change.First main oil cylinder piston bar 501, the second main oil cylinder piston bar 502 are respectively in the first main oil
Moved reciprocatingly in cylinder 401, the second master cylinder 402, to avoid colliding, adjusting means in the present embodiment is needed respectively the
One detection ring 1001, second detects the nearly corresponding first main oil cylinder piston bar 501 of ring 1002, the end of the second main oil cylinder piston bar 502
Side is held to increase the first guide ring 1801, the second guide ring 1802.
According to being actually needed, by detecting ring 1001, the first guide ring 1801 and second to the first adjustment ring 901, first
Adjustment ring 902, second detects the adjustment of ring 1002, the installation site of the second guide ring 1802, it is possible to obtains detecting ring with approaching
The different distance of switch, so as to make up error caused by manufacture system.
Claims (4)
1. a kind of enclosed pumping system concrete piston automatic retracting device, described enclosed pumping system is comprising washing chamber and at least
Two groups of structure identical pumps, every group of pump is mainly by concrete conveying cylinder, concrete piston, master cylinder, proximity switch, spacing
Oil cylinder and control system composition, described master cylinder is made up of master cylinder cylinder, main oil cylinder piston, main oil cylinder piston bar, described
Locating oil cylinder is made up of locating oil cylinder cylinder barrel and locating oil cylinder piston, and described concrete conveying cylinder and master cylinder are arranged on washing chamber
On, described locating oil cylinder is arranged on master cylinder, and described concrete piston is arranged on main oil cylinder piston bar, and in concrete conveying cylinder
Move back and forth, it is characterised in that：The control system of the concrete piston automatic retracting device includes control system oil circuit, described control
System oil-way processed connects two master cylinders and two locating oil cylinders in two groups of pumps, and the control system oil circuit is provided with four electricity
Magnet valve, respectively the first magnetic valve, second solenoid valve, the 3rd magnetic valve and the 4th magnetic valve, in the main oil of the pumping system
Pump is provided with the first magnetic valve, and the rodless cavity of the first locating oil cylinder and the second locating oil cylinder is simultaneously provided with the 4th magnetic valve, institute after connecing
Rod chamber of the 4th magnetic valve stated also with two master cylinders is connected, and is provided with second solenoid valve on connection oil circuit, described
For 3rd magnetic valve on the connection oil circuit between the rodless cavity of two master cylinders, described four magnetic valves pass through company with fuel tank
Connect oil circuit to be connected, the connection oil circuit between described second solenoid valve and fuel tank is provided with overflow valve.
A kind of 2. enclosed pumping system concrete piston automatic retracting device according to claim 1, it is characterised in that：Institute
The 4th magnetic valve connection accumulator for the control system oil circuit stated, check valve is additionally provided with both connection oil circuits, described
Accumulator will be supplied to the boost in pressure of the pressure oil of two master cylinders to 16MPa.
A kind of 3. enclosed pumping system concrete piston automatic retracting device according to claim 1, it is characterised in that：Institute
The proximity switch stated is arranged on master cylinder or on locating oil cylinder, and the main oil cylinder piston bar of every group of pump is provided with
The adjusting means being engaged with proximity switch, it is corresponding with the installation site of the proximity switch, realize and device fabrication system is given birth to
Into error made up, described adjusting means include multi-disc adjustment ring and detection ring.
A kind of 4. enclosed pumping system concrete piston automatic retracting device according to claim 3, it is characterised in that：Institute
Identical or different thickness can be designed to as needed by stating the adjustment ring of adjusting means, and described adjusting means is installed on master cylinder
During piston-rod end, also need to set up guide ring, collided when avoiding main oil cylinder piston bar from being moved reciprocatingly in master cylinder, institute
The adjusting means stated is by the adjustment to adjustment ring and detection ring position, obtains detecting ring and the different distance of proximity switch is come
Realize the error for making up the generation of device fabrication system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720709764.7U CN206917834U (en) | 2017-06-19 | 2017-06-19 | A kind of enclosed pumping system concrete piston automatic retracting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720709764.7U CN206917834U (en) | 2017-06-19 | 2017-06-19 | A kind of enclosed pumping system concrete piston automatic retracting device |
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| CN206917834U true CN206917834U (en) | 2018-01-23 |
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| CN201720709764.7U Withdrawn - After Issue CN206917834U (en) | 2017-06-19 | 2017-06-19 | A kind of enclosed pumping system concrete piston automatic retracting device |
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| CN (1) | CN206917834U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120261A (en) * | 2017-06-19 | 2017-09-01 | 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 |
| CN111059015A (en) * | 2020-02-10 | 2020-04-24 | 祁锦明 | Composite structure pump |
| CN112727847A (en) * | 2020-11-27 | 2021-04-30 | 北京航天计量测试技术研究所 | Hydraulic force standard machine oil cylinder with piston capable of being automatically centered and automatic centering method |
-
2017
- 2017-06-19 CN CN201720709764.7U patent/CN206917834U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120261A (en) * | 2017-06-19 | 2017-09-01 | 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 |
| 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 |
| CN111059015A (en) * | 2020-02-10 | 2020-04-24 | 祁锦明 | Composite structure pump |
| CN111059015B (en) * | 2020-02-10 | 2024-06-07 | 元工能源科技集团有限公司 | Composite structure pump |
| CN112727847A (en) * | 2020-11-27 | 2021-04-30 | 北京航天计量测试技术研究所 | Hydraulic force standard machine oil cylinder with piston capable of being automatically centered and automatic centering method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180123 Effective date of abandoning: 20180921 |
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| AV01 | Patent right actively abandoned |