CN104154061A - Novel concrete pumping mechanism - Google Patents
Novel concrete pumping mechanism Download PDFInfo
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- CN104154061A CN104154061A CN201410344507.9A CN201410344507A CN104154061A CN 104154061 A CN104154061 A CN 104154061A CN 201410344507 A CN201410344507 A CN 201410344507A CN 104154061 A CN104154061 A CN 104154061A
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- valve
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- directional control
- solenoid directional
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Abstract
The invention relates to pumping systems for concrete delivery pump trucks, trailer pumps and the like, in particular to a novel concrete pumping system which comprises two pumping cylinder structures. Each pumping cylinder structure comprises a first main oil cylinder, a second main oil cylinder and two oscillating cylinders, each first main oil cylinder is serially connected with the corresponding second main oil cylinder, and the two oscillating cylinders of each pumping cylinder structures are in linkage with each other. The novel concrete pumping mechanism has the advantages that a pumping system is provided with free single-double-withdrawal pistons, the quantities of direction valves are increased, oil circuits are changed, novel valve blocks are designed, accordingly, the single-double-withdrawal pistons can be implemented on the original pumping device, a novel circuit does not need to be individually designed, the structural complexity can be reduced, and the cost can be decreased.
Description
Technical field
The present invention relates to for pump truck, drag the pumping system of the delivering concretes such as pump, particularly a kind of new concrete pumping mechanism.
Background technique
At present, the positive and negative pump of beating can only be carried out in existing pumping system loop, can not complete and move back piston function, and in order to realize, to move back piston and will design separately a loop, complex structure like this, cost increases.
Summary of the invention
The object of the present invention is to provide a kind of new concrete pumping mechanism that free Dan Shuan moves back piston that realizes.
The object of the invention is to realize by following approach: a kind of new concrete pumping mechanism, it comprises two cover pumping cylinder structures, pumping cylinder structure comprises master cylinder of mutual series connection and No. two master cylinders, two swing cylinders of interlock mutually;
Main four-way valve drives a master cylinder and No. two master cylinders to control two master cylinder commutations, two swing cylinders are controlled commutation by hydraulicchange-over valve, described main four-way valve commutation is controlled by a solenoid directional control valve, the commutation of hydraulicchange-over valve is controlled by No. two solenoid directional control valves, a solenoid directional control valve and No. two solenoid directional control valves pass through main controller controls by approach switch, and this approach switch is installed on two master cylinder end oil outlet mouth one sides.
Further optimization as this programme, a described master cylinder and the rodless cavity mouth of No. two master cylinders connect cartridge valve No. one, upper No. two cartridge valves connect the rod chamber mouth of a master cylinder and No. two master cylinders, and No. four solenoid directional control valves are controlled the switch of cartridge valve, upper No. two cartridge valves;
The first from left cartridge valve, the second from left cartridge valve connect respectively rodless cavity mouth and the rod chamber mouth of a master cylinder, and the switch of the first from left cartridge valve, the second from left cartridge valve is controlled by No. three solenoid directional control valves;
A right cartridge valve, right No. two cartridge valves connect respectively rodless cavity mouth and the rod chamber mouth of No. two master cylinders, and the switch of a right cartridge valve, right No. two cartridge valves is controlled by No. five solenoid directional control valves.
As the further optimization of this programme, between described master cylinder and conveying cylinder, establish water tank, a flange interstage sleeve is installed on water tank.
A kind of new concrete pumping of the present invention mechanism provides a kind of free Dan Shuan to move back the pumping system of piston, by increase directional control valve quantity, change oil circuit and design new valve piece, realization Dan Shuan on original pumping installations moves back piston, needn't design separately a new loop, reduce structure complexity, reduce cost.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Fig. 1 is pumping system structural representation of the present invention;
Fig. 2 is pumped back line structure schematic diagram of the present invention;
Fig. 3 is electromagnet action schedule of the present invention;
In figure, carry cylinder 1 No. one, concrete piston assembly 2, water tank 3, concrete piston adpting flange 4, clip 5, main oil cylinder piston bar 6, the rod chamber hydraulic fluid port 7 of master cylinder, the rod chamber 8 of master cylinder, carry cylinder 9 No. two, repairing pipe 10, main oil cylinder piston 11, the rodless cavity mouth 12 of master cylinder, approach switch 13, flange interstage sleeve 14, a solenoid directional control valve 21, main four-way valve 22, No. two solenoid directional control valves 23, hydraulicchange-over valve 24, No. three solenoid directional control valves 25, No. four solenoid directional control valves 26, No. five solenoid directional control valves 27, a upper cartridge valve 30, upper No. two cartridge valves 31, the first from left cartridge valve 32, the second from left cartridge valve 33, a right cartridge valve 34, right No. two cartridge valves 35, a master cylinder 41, No. two master cylinders 42, swing cylinder 43.
Embodiment
As shown in Figure 1 and Figure 2, a kind of new concrete pumping of the present invention mechanism, it comprises two cover pumping cylinder structures, pumping cylinder structure comprises master cylinder 41 of mutual series connection and No. two master cylinders 42, two swing cylinders 43 of interlock mutually;
Main four-way valve 22 drives a master cylinder 41 and No. two master cylinders 42 to control two master cylinder commutations, determines which master cylinder enters high pressure oil; Two swing cylinders 43 are controlled commutation by hydraulicchange-over valve 24, described main four-way valve 22 commutations are controlled by a solenoid directional control valve 21, the commutation of hydraulicchange-over valve 24 is controlled by No. two solenoid directional control valves 23, a solenoid directional control valve 21 and No. two solenoid directional control valves 23 pass through main controller controls by approach switch 13, this approach switch 13 is installed on two master cylinder end oil outlet mouth one sides, detect the position of main oil cylinder piston, it is that Dan Shuan moves back piston and switches arbitrarily that the signal being provided by signal processor makes to move back piston.During working state, press play button, when main oil cylinder piston is during near approach switch, approach switch sends signal, allows valve commutation, changes the direction of main oil cylinder piston motion, completes normal pumping; When moving back piston mode, press and move back piston button (comprising that Dan Shuan moves back), when main oil cylinder piston is during near approach switch, approach switch sends signal, allows valve not commutate, and the direction of main oil cylinder piston motion is constant, continue to retreat, carry the concrete piston of cylinder to fall back on water tank, complete and change concrete piston.While having changed concrete piston, press reset button, the piston-advance of master cylinder is approach switch place to master cylinder position 1, then can carry out normal pumping work by play button.
A described master cylinder 41 and the rodless cavity mouth of No. two master cylinders 42 12 connect a upper cartridge valve 30, upper No. two cartridge valves 31 connect the upper cartridge valve 30 of 7, No. four solenoid directional control valves of rod chamber mouth, 26 control of a master cylinder 41 and No. two master cylinders 42, the switch of upper No. two cartridge valves 31; In order to allow two master cylinders be together in series, go up a cartridge valve 30 and open and play the low pressure oil of cylinder rodless cavity to enter upper cylinder half rodless cavity.Cartridge valve 30 and upper No. two cartridge valves 31 are closed simultaneously, realize and move back piston function.
The first from left cartridge valve 32, the second from left cartridge valve 33 connect respectively rodless cavity mouth 12 and the rod chamber mouth 7 of a master cylinder 41, and the switch of the first from left cartridge valve 32, the second from left cartridge valve 33 is controlled by No. three solenoid directional control valves 25; The first from left cartridge valve 32 is opened the rod chamber oil-feed of playing cylinder, low pressure pumping; The second from left cartridge valve 33 is opened the rodless cavity oil-feed of playing cylinder, high pressure pumping.
A right cartridge valve 34, right No. two cartridge valves 35 connect respectively rodless cavity mouth 12 and the rod chamber mouth 7 of No. two master cylinders 42, and the switch of a right cartridge valve 34, right No. two cartridge valves 35 is controlled by No. five solenoid directional control valves 27.It is the rod chamber oil-feed of upper cylinder half that a right cartridge valve 34 is opened, low pressure pumping, and it is the rodless cavity oil-feed of upper cylinder half that right No. two cartridge valves 35 are opened, high pressure pumping.
A described master cylinder 41 and carry for No. one between cylinder 1, No. two master cylinders 42 and No. two conveying cylinders 9 and establish respectively water tank 3, is provided with a flange interstage sleeve 14 on water tank 3.
Working procedure:
No. one master cylinder is regained, drive and carry for No. one cylinder to regain, concrete in hopper is drawn onto to No. one and carries cylinder, now, S valve carries cylinder outlet to be connected by the control of swing cylinder with No. two, now, No. two master cylinder stretches out, carry for No. two cylinder also to stretch out, the concrete of No. two conveying cylinders is entered to boom system by S valve, complete pumping.Then conversely, two cylinders replace pumping, successively.
While moving back piston, if singly move back piston, the flange interstage sleeve on water tank is taken away, an approach switch provides and moves back signal piston, and master cylinder retreats always, knows carrying the concrete piston in cylinder to fall back on water tank; If two, move back piston, two approaching all giving are moved back signal piston, and two concrete pistons are all returned in water tank.
As shown in Figure 3, a solenoid directional control valve 21 is commutations of controlling main four-way valve 22, and No. two solenoid directional control valves 23 are controlled the commutation of hydraulicchange-over valve 24.Because the flow latus rectum of main four-way valve 22 and hydraulicchange-over valve 24 is large, the electromagnetic force thrust of electromagnet can not commutate fast and accurately, needs hydraulic coupling to complete commutation.Therefore, when the electromagnet DT1 of a solenoid directional control valve 21 obtains when electric, the left position work of a solenoid directional control valve 21, the pressure oil of accumulator is by a solenoid directional control valve 21, thereby act on the right position of main four-way valve 22, i.e. the right position work of main four-way valve 22, pumping system starts to carry out pumping work.In like manner, when the electromagnet DT3 of No. two solenoid directional control valves 23 obtains when electric, the left position work of No. two solenoid directional control valves 23, the pressure oil of accumulator is by No. two solenoid directional control valves 23, thereby act on the right position of hydraulicchange-over valve 24, i.e. the right position work of hydraulicchange-over valve 24, oscillating oil cylinder is started working.
Low positive pressure pump pumping front half part: DT1, DT4, DT5, DT8 obtain electric, the electromagnet of No. three solenoid directional control valves 25 must not be electric, and the first from left cartridge valve 32 is closed, and the second from left cartridge valve 33 is opened, left cylinder rod chamber oil-feed; The electromagnet DT5 of No. four solenoid directional control valves 26 obtains electric, a upper cartridge valve 30 is opened, upper No. two cartridge valves 31 are closed, the electromagnet of No. five solenoid directional control valves 27 obtains electric, a right cartridge valve 34 is opened, right No. two cartridge valves 35 are closed, and realize right cylinder rod chamber oil sump tank, and this has realized the low positive pressure pump of left oil cylinder.
The principle of anti-pump is the same, just coordinates tilt cylinder to realize anti-pump.
Two while moving back piston: DT1 obtains electric.Hydraulicchange-over valve 24, for meta state, does not need tilt cylinder work.No. three solenoid directional control valve 25 electromagnet must not be electric, and the first from left cartridge valve 32 is closed, and the second from left cartridge valve 33 is opened, left cylinder rod chamber oil-feed; No. four solenoid directional control valve 26 electromagnet must not be electric, and a upper cartridge valve 30 is opened, and upper No. two cartridge valves 31 are opened, and left and right cylinder rod chamber is realized UNICOM, left and right rodless cavity UNICOM; No. five solenoid directional control valve 27 electromagnet must not be electric, and a right cartridge valve 34 is closed, and right No. two cartridge valves 35 are opened, left oil cylinder rodless cavity oil sump tanks.Two piston function of moving back realize.
While singly moving back piston: DT1, DT5 obtain electric.No. three solenoid directional control valve 25 electromagnet must not be electric, and the first from left cartridge valve 32 is closed, and the second from left cartridge valve 33 is opened, left cylinder rod chamber oil-feed; It is electric that No. four solenoid directional control valve 26 left side electromagnet obtain, and a upper cartridge valve 30 is opened, and upper No. two cartridge valves 31 are closed; No. four solenoid directional control valve 26 must not be electric, and a right cartridge valve 34 is closed, and right No. two cartridge valves 35 are opened, and left oil cylinder rodless cavity oil sump tank, realizes left side cylinder and move back piston.
The above; it is only the specific embodiment of the present invention; but protection scope of the present invention is not limited to this; any those of ordinary skill in the art are in the disclosed technical scope of the present invention; the variation that can expect without creative work or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims were limited.
Claims (3)
1. a new concrete pumping mechanism, is characterized in that: it comprises two cover pumping cylinder structures, and pumping cylinder structure comprises the master cylinder (41) of mutual series connection and No. two master cylinders (42), two swing cylinders (43) of interlock mutually;
Main four-way valve (22) drives a master cylinder (41) and No. two master cylinders (42) to control two master cylinder commutations, two swing cylinders (43) are controlled commutation by hydraulicchange-over valve (24), described main four-way valve (22) commutation is controlled by a solenoid directional control valve (21), the commutation of hydraulicchange-over valve (24) is controlled by No. two solenoid directional control valves (23), a solenoid directional control valve (21) and No. two solenoid directional control valves (23) are by approach switch (13) by main controller controls, and this approach switch (13) is installed on two master cylinder end oil outlet mouth one sides.
2. a kind of new concrete pumping as claimed in claim 1 mechanism, it is characterized in that: a described master cylinder (41) and the rodless cavity mouth (12) of No. two master cylinders (42) connect a cartridge valve (30), upper No. two cartridge valves (31) connect the rod chamber mouth (7) of a master cylinder (41) and No. two master cylinders (42), and No. four solenoid directional control valves (26) are controlled the switch of a cartridge valve (30), upper No. two cartridge valves (31);
The first from left cartridge valve (32), the second from left cartridge valve (33) connect respectively rodless cavity mouth (12) and the rod chamber mouth (7) of a master cylinder (41), and the switch of the first from left cartridge valve (32), the second from left cartridge valve (33) is controlled by No. three solenoid directional control valves (25);
A right cartridge valve (34), right No. two cartridge valves (35) connect respectively rodless cavity mouth (12) and the rod chamber mouth (7) of No. two master cylinders (42), and the switch of a right cartridge valve (34), right No. two cartridge valves (35) is controlled by No. five solenoid directional control valves (27).
3. a kind of new concrete pumping as claimed in claim 1 mechanism, is characterized in that: described master cylinder and carry between cylinder and establish water tank (3), is provided with a flange interstage sleeve (14) on water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410344507.9A CN104154061A (en) | 2014-07-10 | 2014-07-10 | Novel concrete pumping mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410344507.9A CN104154061A (en) | 2014-07-10 | 2014-07-10 | Novel concrete pumping mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN104154061A true CN104154061A (en) | 2014-11-19 |
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| CN201410344507.9A Pending CN104154061A (en) | 2014-07-10 | 2014-07-10 | Novel concrete pumping mechanism |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH025768A (en) * | 1988-06-23 | 1990-01-10 | Kyokuto Kaihatsu Kogyo Co Ltd | Concrete pump drive control device |
| CN2713194Y (en) * | 2004-04-21 | 2005-07-27 | 郑州多元重工科技有限公司 | Hydraulic system for concrete pump |
| CN101532518A (en) * | 2009-04-18 | 2009-09-16 | 安徽星马汽车股份有限公司 | Concrete pump truck pumping double-main oil cylinder automatic high-low pressure switching and equidirectional telescoping hydraulic device |
| CN203641145U (en) * | 2013-11-18 | 2014-06-11 | 山推楚天工程机械有限公司 | Hydraulic block capable of realizing double pistons retreating in conveying system |
| CN203939794U (en) * | 2014-07-10 | 2014-11-12 | 厦门理工学院 | A kind of new concrete pumping mechanism |
-
2014
- 2014-07-10 CN CN201410344507.9A patent/CN104154061A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH025768A (en) * | 1988-06-23 | 1990-01-10 | Kyokuto Kaihatsu Kogyo Co Ltd | Concrete pump drive control device |
| CN2713194Y (en) * | 2004-04-21 | 2005-07-27 | 郑州多元重工科技有限公司 | Hydraulic system for concrete pump |
| CN101532518A (en) * | 2009-04-18 | 2009-09-16 | 安徽星马汽车股份有限公司 | Concrete pump truck pumping double-main oil cylinder automatic high-low pressure switching and equidirectional telescoping hydraulic device |
| CN203641145U (en) * | 2013-11-18 | 2014-06-11 | 山推楚天工程机械有限公司 | Hydraulic block capable of realizing double pistons retreating in conveying system |
| CN203939794U (en) * | 2014-07-10 | 2014-11-12 | 厦门理工学院 | A kind of new concrete pumping mechanism |
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Application publication date: 20141119 |