CN202031822U - Integral-type concrete pump high-low-pressure switching device - Google Patents

Integral-type concrete pump high-low-pressure switching device Download PDF

Info

Publication number
CN202031822U
CN202031822U CN2011200682483U CN201120068248U CN202031822U CN 202031822 U CN202031822 U CN 202031822U CN 2011200682483 U CN2011200682483 U CN 2011200682483U CN 201120068248 U CN201120068248 U CN 201120068248U CN 202031822 U CN202031822 U CN 202031822U
Authority
CN
China
Prior art keywords
valve
logical
concrete pump
valves
low
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2011200682483U
Other languages
Chinese (zh)
Inventor
罗勇
范爱华
张如伟
王佳
吴江灿
蔡自彪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shantui Chutian Construction Machinery Co Ltd
Original Assignee
Shantui Chutian Construction Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shantui Chutian Construction Machinery Co Ltd filed Critical Shantui Chutian Construction Machinery Co Ltd
Priority to CN2011200682483U priority Critical patent/CN202031822U/en
Application granted granted Critical
Publication of CN202031822U publication Critical patent/CN202031822U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The utility model relates to an integral-type concrete pump high-low-pressure switching device, which consists of a valve block body, six logic valves and a two-position four-way electromagnetic valve, wherein the six logic valves and the two-position four-way electromagnetic valve are respectively integrated onto the valve block body, the six logic valves are divided into two groups, two logic valves in one group of the logic valves are respectively connected with rod cavities of two main oil cylinders of a concrete pump, and the rod-free cavities of the two main oil cylinders are connected with each other through the other logic valve; and two logic valves in the other group of the logic valves are respectively connected with rod-free cavities of the two main oil cylinders of the concrete pump, the other logic valve is connected with the rod cavities of the two main oil cylinders, and the two-position four-way electromagnetic valve respectively control the connection or the disconnection state of the two groups of the logic valves. The integral-type concrete pump high-low-pressure switching device has a compact structure, is convenient and rapid to use, and is suitable for the rapid switching operation of the high-pressure and the low-pressure conveying states of the concrete pump and for hydraulic systems requiring the switching of high-pressure oil pipes and low-pressure oil pipes.

Description

Integral concrete pump high-low voltage switching device
Technical field
The utility model relates to the construction implement field, is specifically related to the conversion equipment of working oil path high low pressure feed status in the concrete pump hydraulic system, is mainly used in concrete and drags main pumps such as formula pump, the vehicle-mounted pump of concrete, concrete mixer to send in the system.
Background technique
At present, concrete pump has obtained extensive use in the pouring concrete construction operation.During pump concrete, concrete pump promotes two concrete piston to-and-fro motion of carrying in the cylinder respectively by two master cylinders.Concrete piston bounces back under the drive of one side master cylinder, concrete is sucked in the conveying cylinder, simultaneously, another carries the concrete piston in the cylinder barrel to stretch out under the drive of pumping master cylinder, its concrete that sucks in a last roundtrips is released, finished concrete uninterrupted pumping thereby so move in circles.
In concrete pumping construction, for adapting to different pumping height and distance requirements, often need carry out the conversion of high low pressure feed status by changing the hydraulic system oil circuit, just make working pressure oil enter the rod chamber and the rodless cavity of two serial connection master cylinders in the pumping system, carry out big discharge capacity of low pressure and the operation of high pressure two states pumping construction, so that reach best efficiency of construction.The conversion of this high low pressure state is to finish by the mode of adapter of conversion oil circuit or rotary valve piece in present practical operation.Two kinds of switching modes all will be taken pipeline or valve piece apart, and mounting or dismounting are wasted time and energy, and make pollutant enter system easily, cause the pollution of hydraulic system and the inefficacy of sealing.Existing employing and the design of main valve group integral type cause main valve group complex structure, processing difficulties, and, be unfavorable for that the high low pressure switching function is as a hydraulic function modular implementation owing to design with main valve group binding type.6 logical valves of the employing that has make up the high low pressure conversion that realizes oil circuit, 6 logical valves are divided into 2 valve pieces are connected with 2 master cylinders respectively, with 1 contiguous block two master cylinders are connected again, and structure is disperseed, the assembling difficulty.Therefore, how efficient quick ground carries out the switching of the high low pressure two states of hydraulic work system oil circuit, simultaneously with the high low pressure switching function of oil circuit as one independently modular unit realize, be the technical problem of the required solution of those skilled in the art.
Summary of the invention
The purpose of this utility model is in order to overcome problem and the shortcoming that above-mentioned prior art exists, and a kind of integral concrete pump high-low voltage switching device of easy to use, reliable performance is provided.
Solve the problems of the technologies described above by following technological scheme:
Integral concrete pump high-low voltage switching device, by valve block, six logical valves, one two position four-way solenoid valve constitutes, be integrated in six logical valves and one two position four-way solenoid valve on the valve block respectively, and six logical valves are divided into two groups, two logical valves are connected with the rod chamber of two master cylinders of concrete pump respectively in one group of logical valve, and another logical valve connects the rodless cavity of two master cylinders; Two logical valves are connected with the rodless cavity of two master cylinders of concrete pump respectively in another group logical valve, another logical valve connects the rod chamber of two master cylinders, two position four-way valves are controlled the on-off two states of two groups of logical valves respectively, working pressure oil is connected with the rod chamber or the rodless cavity of master cylinder, thereby realizes the automatically controlled conversion of two kinds of pumping states of concrete pump high low pressure.
The utility model adopts the design of integral valve piece, and one two position four-way valve, six logical valves are integrated on the valve block.Realize conversion by control to two kinds of pumping states to the on off operating mode of six logical valves.Eliminated the medium tache that original conversion pipe-connecting mode or stopcock mode are installed and removed, thereby there is not in the conventional conversion mode process contaminated liquid pressing system easily, destroys the shortcoming of sealing, and owing to adopt automatically controlled switching, convenient and swift, improved on-the-spot efficiency of construction greatly.Make as a whole independently functional module elements simultaneously, can in the many hydraulic systems that the high low pressure oil circuit need be switched, be applied.
Description of drawings
Fig. 1 is a hydraulic schematic diagram of the present utility model, and wherein double dot dash line partly is a structure connection diagram of the present utility model.
Fig. 2, Fig. 3, Fig. 4 are respectively the construction profile figure of concrete enforcement of the present utility model, show layout and each the concrete distribution of connection hydraulic fluid port on valve block of logical valve on 6 faces of valve block.
Fig. 5 is the structural representation of concrete enforcement of the present utility model.
Embodiment
The utility model will be further described in conjunction with the accompanying drawings.
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, the utility model is by valve block 1, six logical valves 2, one two position four-way solenoid valve 4 constitutes, six logical valves 2 and one two position four-way solenoid valve 4 are integrated in respectively on the valve block 1, and six logical valves 2 are divided into two groups, in one group of logical valve (2-1,2-3,2-5) two logical valves (2-3,2-5) respectively with two master cylinder (3-1 of concrete pump, rod chamber 3-2) connects, another logical valve (2-1) is with two master cylinders (3-1, rodless cavity connection 3-2); In another group logical valve (2-2,2-4,2-6) two logical valves (2-2,2-4) respectively with two master cylinder (3-1 of concrete pump, rodless cavity 3-2) connects, another logical valve (2-6) is with two master cylinder (3-1, rod chamber 3-2) connects, two position four-way valves 4 are controlled the on-off two states of two groups of logical valves respectively, working pressure oil is connected with the rod chamber or the rodless cavity of master cylinder, thereby realizes the automatically controlled conversion of two kinds of pumping states of concrete pump high low pressure.
P1, P2 mouth are connected with the tank drainback oil circuit with the working pressure oil circuit respectively successively, and the X1 mouth is connected with the pilot pressure oil circuit, and the X2 mouth is connected with the tank drainback oil circuit.When two position four-way solenoid valve electromagnet must not be in electricity condition, pilot pressure oil from the X1 mouth is closed logical valve (2-2,2-4,2-6), at this moment, logical valve (2-1,2-3,2-5) is in opening state, oil circuit is communicated with master cylinder 3-1 rod chamber via logical valve 2-3 from the P1 mouth, oil circuit is communicated with another master cylinder 3-2 rod chamber via logical valve 2-5 from the P2 mouth, and the rodless cavity oil circuit of two master cylinders is communicated with via logical valve 2-1.During pumping system work, working pressure oil enters valve block from the P1 mouth, through logical valve 2-3, enter master cylinder 3-1 rod chamber from the outflow of valve block A1 mouth, promote main oil cylinder piston and carry out work, working pressure oil from master cylinder 3-1 rodless cavity A2 to logical valve 2-1 again through B2 in another master cylinder 3-2 rodless cavity; Low pressure oil enters valve block by valve block B1 mouth in another master cylinder 3-2 rod chamber, through logical valve 2-5, flows out oil sump tank from valve block P2 mouth.When moving to the stroke end, piston triggers changement, then working pressure oil enters into another master cylinder 3-2 rod chamber from valve block P2 mouth and promotes pistons work, low pressure oil enters valve block by valve block A1 mouth in the master cylinder 3-1 rod chamber, through logical valve 2-3, flow out oil sump tank from valve block P1 mouth.Thereby realize the big discharge capacity circulation of low pressure pumping.
When two position four-way solenoid valve electromagnet be in during electricity condition, pilot pressure oil from the X1 mouth is closed logical valve (2-1,2-3,2-5), at this moment, logical valve (2-2,2-4,2-6) is in opening state, oil circuit is communicated with master cylinder 3-1 rodless cavity via logical valve 2-2 from the P1 mouth, oil circuit is communicated with another master cylinder 3-2 rodless cavity via logical valve 2-4 from the P2 mouth, and the rod chamber oil circuit of two master cylinders is communicated with via logical valve 2-6.During the work of pumping system, working pressure oil enters valve block from the P1 mouth, through logical valve 2-2, enter master cylinder 3-1 rodless cavity from the outflow of valve block A2 mouth, promote main oil cylinder piston and carry out work, working pressure oil from master cylinder 3-1 rod chamber A1 to logical valve 2-6 again through B1 in another master cylinder 3-2 rod chamber; Simultaneously, low pressure oil enters valve block by valve block B2 mouth in another master cylinder 3-2 rodless cavity, through logical valve 2-4, flows out oil sump tank from valve block P2 mouth.When moving to the stroke end, piston triggers changement, then working pressure oil enters into another master cylinder 3-2 rodless cavity from valve block P2 mouth and promotes pistons work, low pressure oil enters valve block by valve block A2 mouth in the master cylinder 3-1 rodless cavity, through logical valve 2-2, flow out oil sump tank from valve block P1 mouth.Thereby realize the cycle of higher pressure pumping.

Claims (1)

1. integral concrete pump high-low voltage switching device, by valve block, six logical valves, one two position four-way solenoid valve constitutes, it is characterized in that: be integrated in six logical valves and one two position four-way solenoid valve on the valve block respectively, and six logical valves are divided into two groups, two logical valves are connected with the rod chamber of two master cylinders of concrete pump respectively in one group of logical valve, and another logical valve connects the rodless cavity of two master cylinders; Two logical valves are connected with the rodless cavity of two master cylinders of concrete pump respectively in another group logical valve, and another logical valve connects the rod chamber of two master cylinders, and two position four-way valves are controlled the on-off two states of two groups of logical valves respectively.
CN2011200682483U 2011-03-15 2011-03-15 Integral-type concrete pump high-low-pressure switching device Expired - Fee Related CN202031822U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011200682483U CN202031822U (en) 2011-03-15 2011-03-15 Integral-type concrete pump high-low-pressure switching device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011200682483U CN202031822U (en) 2011-03-15 2011-03-15 Integral-type concrete pump high-low-pressure switching device

Publications (1)

Publication Number Publication Date
CN202031822U true CN202031822U (en) 2011-11-09

Family

ID=44894120

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011200682483U Expired - Fee Related CN202031822U (en) 2011-03-15 2011-03-15 Integral-type concrete pump high-low-pressure switching device

Country Status (1)

Country Link
CN (1) CN202031822U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102900722A (en) * 2012-10-22 2013-01-30 杭州川禾机械有限公司 High and low pressure control oil cylinder
WO2014005398A1 (en) * 2012-07-05 2014-01-09 中联重科股份有限公司 Pumping device and pumping equipment comprising same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014005398A1 (en) * 2012-07-05 2014-01-09 中联重科股份有限公司 Pumping device and pumping equipment comprising same
CN102900722A (en) * 2012-10-22 2013-01-30 杭州川禾机械有限公司 High and low pressure control oil cylinder
CN102900722B (en) * 2012-10-22 2015-10-14 杭州川禾机械有限公司 A kind of high low pressure controls oil cylinder

Similar Documents

Publication Publication Date Title
CN205136180U (en) Hydraulic system of big indisputable fill compression dustbin compression material loading simultaneous working
CN101532518B (en) Concrete pump truck pumping double-main oil cylinder automatic high-low pressure switching and equidirectional telescoping hydraulic device
CN105782147A (en) Double-acting hydraulic control system of supercharging device
CN105757015A (en) Hydraulic driven type non-intermittent supercharging device
CN202170901U (en) Main valve bank device of pumped type concrete wet sprayer for coal mine
CN102562686A (en) Hydraulic system for double-acting supercharger
CN102230484A (en) Integrated continuous gas-driving hydraulic force booster
CN206035914U (en) Four jar synchronous hydraulic system of automobile elevator
CN202031822U (en) Integral-type concrete pump high-low-pressure switching device
CN103671316B (en) Hydraulic system of pump and pumping equipment
CN101125693A (en) Hydraulic pressure type double-piston single-cylinder pressure exchange energy reclaiming device
CN203770245U (en) Integrated hydraulic valve set, hydraulic drive system and concrete pump
CN203641145U (en) Hydraulic block capable of realizing double pistons retreating in conveying system
CN201391494Y (en) Hydraulic device for automatic high/low pressure switching and unidirectional expansion of double main pumping cylinders of concrete pump truck
CN105757016A (en) Hydraulic control system of supercharging device
CN202441663U (en) Concrete pump hydraulic device capable of automatically switching high and low pressure and processing flow difference
CN104214142A (en) Manifold truck and hydraulic control system thereof
CN103470473A (en) Hydraulic gas vacuum pump
CN201776935U (en) Hydraulic machine with two sets of hydraulic system structures
CN204023642U (en) Hydraulic crawler excavator oil-liquid hybrid electric system
CN203783845U (en) Fracturing truck and transmission and conveying system thereof
CN202767158U (en) Hydraulic excavator flow out of valve regenerating device
CN2821244Y (en) Multiple plunger interlink synchronous shunt
CN203463254U (en) Hydraulic air vacuum pump
RU2457951C2 (en) Hydraulic press

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20111109

Termination date: 20160315