CN202031822U - Integral-type concrete pump high-low-pressure switching device - Google Patents
Integral-type concrete pump high-low-pressure switching device Download PDFInfo
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- 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
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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
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.
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 |
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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 (3)
| 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 |
| CN108716494A (en) * | 2018-07-17 | 2018-10-30 | 湖南鼎峰机械有限公司 | A kind of concrete pumping equipment high-low pressure automatic switching valve and hydraulic system |
-
2011
- 2011-03-15 CN CN2011200682483U patent/CN202031822U/en not_active Expired - Fee Related
Cited By (5)
| 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 |
| CN108716494A (en) * | 2018-07-17 | 2018-10-30 | 湖南鼎峰机械有限公司 | A kind of concrete pumping equipment high-low pressure automatic switching valve and hydraulic system |
| CN108716494B (en) * | 2018-07-17 | 2023-12-01 | 湖南鼎峰机械有限公司 | High-low pressure automatic switching valve of concrete pumping equipment and hydraulic system |
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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 |