CN102168696B - High-low pressure switching control system, concrete pumping system and device - Google Patents
High-low pressure switching control system, concrete pumping system and device Download PDFInfo
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- CN102168696B CN102168696B CN 201110112743 CN201110112743A CN102168696B CN 102168696 B CN102168696 B CN 102168696B CN 201110112743 CN201110112743 CN 201110112743 CN 201110112743 A CN201110112743 A CN 201110112743A CN 102168696 B CN102168696 B CN 102168696B
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Abstract
The invention relates to the technical field of concrete pumping devices, and discloses a high-low pressure switching control system which comprises a first oil cylinder group, a second oil cylinder group, a first hydraulic system interface, a second hydraulic system interface, a hydraulic valve blank and a hydraulic pipeline; the hydraulic valve blank is provided with at least two combination working states, under one working state, rod cavities of two groups of oil cylinders are respectively communicated with the first hydraulic system interface and the second hydraulic system interface; and under the other working state, rodless cavities of the two groups of oil cylinders are respectively communicated with the first hydraulic system interface and the second hydraulic system interface, and the hydraulic valve blank comprises at least one three-way valve. The high-low pressure switching control system of the structure has the advantages of simple structure and smaller volume and lighter weight for the valve block, further the weight of a finished motorcycle can be reduced, and the cost is lower; and the invention also relates to a concrete pumping system of the high-low pressure switching control system and a concrete pumping device.
Description
Technical field
The present invention relates to the concrete pumping equipment technical field, relate in particular to a kind of high low pressure handover control system, the invention still further relates to a kind of concrete pumping system and a kind of concrete pumping equipment with above-mentioned high low pressure handover control system.
Background technique
Concrete pumping equipment is a kind of power equipment of delivering concrete, and common concrete pumping equipment comprises concrete pump, pump truck, Vehicle loaded pump, wet-spraying machine etc.
At present, the pumping system of concrete pumping equipment disposes the high low pressure handover control system usually, the high low pressure handover control system can be so that pumping system switches between high-pressure work state, operating on low voltage state, its objective is when the pumping solvent or diluent and when pumping is expected firmly, can obtain larger pumping pressure to realize smooth pumping so that the low pressure pumping can obtain larger pump displacement; In addition, when the faults such as plugging occurring at the pumping pipeline, the high low pressure handover control system can switch to pumping system the high-pressure work state, and high pressure can be so that delivery line be unobstructed.
The working principle of high low pressure handover control system is as follows: when concrete pumping equipment is worked, the rodless cavity that the hydraulic oil that will have a certain pressure enters master cylinder drives conveying cylinder work, can obtain higher working pressure, reduce simultaneously and carry discharge capacity, this moment, pumping system was in the high-pressure work state; The rod chamber that the hydraulic oil that will have a certain pressure enters master cylinder drives conveying cylinder work, can obtain higher conveying discharge capacity, reduces simultaneously working pressure.The high low pressure handover control system reaches the purpose of switching the pumping system pressure by switching master cylinder rod chamber and rodless cavity work.
In the prior art, the high low pressure handover control system mainly contains two schemes, and namely manually high low pressure switches and the automatic high/low pressure switching.
Manually the high low pressure switching is that the mode that adopts the workman manually to change oil pipe reaches the purpose that high low pressure switches, the hydraulic oil interface of drawing from oil hydraulic pump can be communicated with rod chamber, the rodless cavity of master cylinder by oil pipe respectively, the workman manually will be communicated with described hydraulic oil interface switching with the oil pipe of rod chamber or rodless cavity, switch to realize high low pressure.This scheme switch speed is slow, needs the time longer, and especially when the situation such as plugging occurring, manually high low pressure switches and can not in time switch, and may cause catastrophe failure and consequence; Adopt manual switching, human cost is higher.
It is to utilize the method for electrichydraulic control to realize that high low pressure switches that automatic high/low pressure switches, the hydraulic oil interface of drawing from oil hydraulic pump by the oil hydraulic circuit control of solenoid directional control valve and a plurality of cartridge valve formation is communicated with the rod chamber of master cylinder, the switching of rodless cavity, switches to realize high low pressure.This scenario-frame is complicated, and the reliability of system is lower, breaks down easily; Need more hydrovalve, increased the volume and weight of valve piece, and then increased complete vehicle weight; Need more hydrovalve and solenoid valve cost higher.
Therefore, how to develop a kind of high low pressure switch speed high low pressure handover control system fast, simple in structure, become the technical barrier that those skilled in the art need to be resolved hurrily.
Summary of the invention
First purpose of the present invention provides a kind of high low pressure handover control system, and this system's high low pressure switch speed is fast and simple in structure.Second purpose of the present invention provides a kind of concrete pumping system with above-mentioned high low pressure handover control system; The 3rd purpose of the present invention provides a kind of concrete pumping equipment with above-mentioned concrete pumping system.
In order to realize above-mentioned first purpose, the invention provides a kind of high low pressure handover control system, comprise the first oil cylinder group, the second oil cylinder group, the first hydraulic oil interface, the second hydraulic oil interface, hydraulic valve bank and hydraulic pipe line, hydraulic valve bank has at least two kinds of work in combination states, under its a kind of working state, two group oil cylinder rod chambers are communicated with described the first hydraulic oil interface, described the second hydraulic oil interface respectively; Under another kind of working state, two group oil cylinder rodless cavities are communicated with described the first hydraulic oil interface, described the second hydraulic oil interface respectively, hydraulic valve bank comprises a three-way valve at least, and a port of described three-way valve is communicated with the rod chamber of described the first oil cylinder group, the another port is communicated with the rod chamber of described the second oil cylinder group, and the 3rd port is communicated with described the first hydraulic oil interface or described the second hydraulic oil interface; Or a port of described three-way valve is communicated with the rodless cavity of described the first oil cylinder group, and the another port is communicated with the rodless cavity of described the second oil cylinder group, and the 3rd port is communicated with described the first hydraulic oil interface or described the second hydraulic oil interface.
Preferably, described hydraulic valve bank comprises the first three-way valve, the second three-way valve, the 3rd three-way valve; The filler opening of described the first three-way valve is communicated with described the first hydraulic oil interface, and the first oil outlet of described the first three-way valve, the second oil outlet are communicated with the rod chamber of described the first oil cylinder group, the rod chamber of described the second oil cylinder group respectively; The filler opening of described the second three-way valve is communicated with described the first hydraulic oil interface, and the first oil outlet of described the second three-way valve, the second oil outlet are communicated with the rodless cavity of described the first oil cylinder group, the rodless cavity of described the second oil cylinder group respectively; The first filler opening of described the 3rd three-way valve, the second filler opening are communicated with the rodless cavity of the first oil cylinder group, the rod chamber of the second oil cylinder group respectively, and the oil outlet of the 3rd three-way valve is communicated with described the second hydraulic oil interface.
Preferably, described hydraulic valve bank comprises the 4th three-way valve, the 5th three-way valve, the first Twoway valves group; The filler opening of described the 4th three-way valve is communicated with described the first hydraulic oil interface, and the first oil outlet of described the 4th three-way valve, the second oil outlet are communicated with the rod chamber of described the first oil cylinder group, the rod chamber of described the second oil cylinder group respectively; The filler opening of described the 5th three-way valve is communicated with described the first hydraulic oil interface, and the first oil outlet of described the 5th three-way valve, the second oil outlet are communicated with the rodless cavity of described the first oil cylinder group, the rodless cavity of described the second oil cylinder group respectively; The first filler opening of described the first Twoway valves group, the second filler opening are communicated with the rodless cavity of the first oil cylinder group, the rod chamber of the second oil cylinder group respectively, and the oil outlet of the first Twoway valves group is communicated with described the second hydraulic oil interface.
Preferably, described hydraulic valve bank comprises the 4th three-way valve, the second Twoway valves group, the 3rd Twoway valves group; The filler opening of described the 4th three-way valve is communicated with described the first hydraulic oil interface, and the first oil outlet of described the 4th three-way valve, the second oil outlet are communicated with the rod chamber of described the first oil cylinder group, the rod chamber of described the second oil cylinder group respectively; The filler opening of described the second Twoway valves group is communicated with described the first hydraulic oil interface, and the first oil outlet of described the second Twoway valves group, the second oil outlet are communicated with the rodless cavity of described the first oil cylinder group, the rodless cavity of described the second oil cylinder group respectively; The first filler opening of described the 3rd Twoway valves group, the second filler opening are communicated with the rodless cavity of the first oil cylinder group, the rod chamber of the second oil cylinder group respectively, and the oil outlet of the 3rd Twoway valves group is communicated with described the second hydraulic oil interface.
Preferably, described the first oil cylinder group comprises that the first oil cylinder, described the second oil cylinder group comprise the second oil cylinder.
Preferably, described the first oil cylinder group comprises the 3rd oil cylinder, the 4th oil cylinder, the rod chamber of described the first oil cylinder group comprises the rod chamber of described the 3rd oil cylinder, the rod chamber of described the 4th oil cylinder, and the rodless cavity of described the first oil cylinder group comprises the rodless cavity of described the 3rd oil cylinder, the rodless cavity of described the 4th oil cylinder; Described the second oil cylinder group comprises the 5th oil cylinder, the 6th oil cylinder, the rod chamber of described the second oil cylinder group comprises the rod chamber of described the 5th oil cylinder, the rod chamber of described the 6th oil cylinder, and the rodless cavity of described the second oil cylinder group comprises the rodless cavity of described the 5th oil cylinder, the rodless cavity of described the 6th oil cylinder.
Preferably, three-way valve is tee ball valve in the described hydraulic valve bank.
Preferably, described three-way valve is three-way solenoid valve, manual three-way valve or hydraulic controlled triple valve.
High low pressure handover control system provided by the invention, comprise the first oil cylinder group, the second oil cylinder group, the first hydraulic system interface, the second hydraulic system interface, hydraulic valve bank and hydraulic pipe line, have at least one to be three-way valve in the hydraulic valve bank, and a port of described three-way valve is communicated with rod chamber or the rodless cavity of the first hydraulic jack group, the another port is communicated with rod chamber or the rodless cavity of described the second hydraulic jack group, and the 3rd port is communicated with the first hydraulic system interface or described the second hydraulic system interface; Hydraulic valve bank has at least two kinds of work in combination states, and under its a kind of working state, two group oil cylinder rod chambers are communicated with two hydraulic system interfaces respectively; Under another kind of working state, two group oil cylinder rodless cavities are communicated with two hydraulic system interfaces respectively.
The high low pressure handover control system of this structure, switch by the hydraulic valve bank realization master cylinder rod chamber with three-way valve, the working state between the rodless cavity, realize the switching between the pumping system high low pressure working state, the hydraulic valve bank connected sum disconnects and can realize by manually-operable, electric control operation and hydraulic controlled operation, the high low pressure switch speed is fast, can avoid the equipment failure that causes excessively slowly because of the high low pressure switch speed; This control system has and is no less than one three-way valve, and simple in structure, the volume and weight of valve piece is all less, and then can lower the weight of car load, and cost is lower.
In the preferred version, described hydraulic valve bank comprises the first three-way valve, the second three-way valve, the 3rd three-way valve; The filler opening of described the first three-way valve is communicated with described the first hydraulic oil interface, and the first oil outlet of described the first three-way valve, the second oil outlet are communicated with the rod chamber of described the first oil cylinder group, the rod chamber of described the second oil cylinder group respectively; The filler opening of described the second three-way valve is communicated with described the first hydraulic oil interface, and the first oil outlet of described the second three-way valve, the second oil outlet are communicated with the rodless cavity of described the first oil cylinder group, the rodless cavity of described the second oil cylinder group respectively; The first filler opening of described the 3rd three-way valve, the second filler opening are communicated with the rodless cavity of the first oil cylinder group, the rod chamber of the second oil cylinder group respectively, and the oil outlet of the 3rd three-way valve is communicated with described the second hydraulic oil interface.
The filler opening of the first three-way valve is communicated with the first oil outlet, the first filler opening of the second three-way valve is communicated with the second filler opening, when the second filler opening of the 3rd three-way valve is communicated with oil outlet, the first hydraulic oil interface is communicated with the rod chamber of the first oil cylinder group, the rodless cavity of the first oil cylinder group is communicated with the rodless cavity of the second oil cylinder group, the rod chamber of the second oil cylinder group is communicated with the second hydraulic oil interface, the first hydraulic oil interface, hydraulic oil can enter respectively the rod chamber of the first oil cylinder group in the second hydraulic oil interface, the rod chamber of the second oil cylinder group, and then drive the first oil cylinder group, the second oil cylinder group synchronization motion, the first oil cylinder group, the second oil cylinder group drives conveying cylinder work jointly, and this moment, pumping system belonged to the operating on low voltage state.
The filler opening of the second three-way valve is communicated with the second oil outlet, the first filler opening of the first three-way valve is communicated with the second filler opening, when the first filler opening of the 3rd three-way valve is communicated with oil outlet, the first hydraulic oil interface is communicated with the rodless cavity of the second oil cylinder group, the rod chamber of the second oil cylinder group is communicated with the rod chamber of the first oil cylinder group, the first hydraulic oil interface, hydraulic oil can enter respectively the rodless cavity of the first oil cylinder group in the second hydraulic oil interface, the rodless cavity of the second oil cylinder group, and then drive the first oil cylinder group, the second oil cylinder group synchronization motion, the first oil cylinder group, the second oil cylinder group drives conveying cylinder work jointly, and this moment, pumping system belonged to the high-pressure work state.
The high low pressure handover control system of this structure, only need can realize just that by three three-way valve the working state between master cylinder rod chamber, the rodless cavity switches, realize the switching between the pumping system high low pressure working state, three three-way valve connected sums disconnect and can realize by manually-operable, electric control operation and hydraulic controlled operation, the high low pressure switch speed is fast, can avoid the equipment failure that causes excessively slowly because of the high low pressure switch speed; This control system only needs three three-way valve, and is simple in structure, and the volume and weight of valve piece is all less, and then can lower the weight of car load, and cost is lower.
In order to realize above-mentioned second purpose, the present invention also provides a kind of concrete pumping system, comprises hydraulic system, above-mentioned high low pressure handover control system, and the hydraulic fluid port of described hydraulic system is communicated with described the first hydraulic oil interface or described the second hydraulic oil interface.Because above-mentioned height handover control system possesses above-mentioned technique effect, the concrete pumping system with this high low pressure handover control system also should possess above-mentioned technique effect.
In order to realize above-mentioned the 3rd purpose, the present invention also provides a kind of concrete pumping equipment, and this concrete pumping equipment comprises above-mentioned concrete pumping system.Because above-mentioned concrete pumping system possesses above-mentioned technique effect, the concrete pumping equipment with this concrete pumping system also should possess above-mentioned technique effect.
Description of drawings
Fig. 1 is the principle schematic of the first embodiment of high low pressure handover control system provided by the present invention;
Fig. 2 is the principle schematic when the high low pressure handover control system is in the operating on low voltage state among Fig. 1;
Fig. 3 is the principle schematic when the high low pressure handover control system is in the high-pressure work state among Fig. 1;
Fig. 4 is the principle schematic of the second embodiment of high low pressure handover control system provided by the present invention;
Fig. 5 is the principle schematic of the third embodiment of high low pressure handover control system provided by the present invention;
Fig. 6 is the principle schematic when the high low pressure handover control system is in the operating on low voltage state among Fig. 5;
Fig. 7 is the principle schematic when the high low pressure handover control system is in the high-pressure work state among Fig. 5;
Fig. 8 is the principle schematic of the 4th kind of embodiment of high low pressure handover control system provided by the present invention;
Fig. 9 is the principle schematic when the high low pressure handover control system is in the operating on low voltage state among Fig. 8;
Figure 10 is the principle schematic when the high low pressure handover control system is in the high-pressure work state among Fig. 8;
Wherein, among Fig. 1-Fig. 4:
The first oil cylinder 1, the second oil cylinder 2, the 3rd oil cylinder 1-1, the 4th oil cylinder 1-2, the 5th oil cylinder 2-1, the 6th oil cylinder 2-2, the first three-way valve 3, the second three-way valve 4, the 3rd three-way valve 5; The 4th three-way valve 6, the 5th three-way valve 7, the first Twoway valves group 8, the second Twoway valves group 9-1, the 3rd Twoway valves group 9-2.
Embodiment
In order to make those skilled in the art better understand technological scheme of the present invention, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please referring to Fig. 1, Fig. 1 is the principle schematic of the first embodiment of high low pressure handover control system provided by the present invention.
As shown in Figure 1, high low pressure handover control system provided by the invention comprises the first oil cylinder 1, the second oil cylinder 2, the first hydraulic oil interface A, the second hydraulic oil interface B and hydraulic valve bank, and described hydraulic valve bank specifically can comprise the first three-way valve 3, the second three-way valve 4, the 3rd three-way valve 5; The first hydraulic oil interface A, the second hydraulic oil interface B can be communicated with the hydraulic oil oil outlet of oil hydraulic pump respectively, and the first hydraulic oil interface A, the second hydraulic oil interface B all can provide the hydraulic oil with certain pressure; The first oil cylinder 1, the second oil cylinder 2 consist of the master cylinder of concrete pumping system.
The filler opening of the first three-way valve 3 is communicated with the first hydraulic oil interface A, and the first oil outlet of the first three-way valve 3, the second oil outlet are communicated with the rod chamber of the first oil cylinder 1, the rod chamber of the second oil cylinder 2 respectively; The filler opening of the second three-way valve 4 is communicated with the first hydraulic oil interface A, and the first oil outlet of the second three-way valve 4, the second oil outlet are communicated with the rodless cavity of the first oil cylinder 1, the rodless cavity of the second oil cylinder 2 respectively; The first filler opening of the 3rd three-way valve 5, the second filler opening are communicated with the rod chamber of the rodless cavity of the first oil cylinder 1, the second oil cylinder 2 respectively, the oil outlet of the 3rd three-way valve 5 is communicated with the second hydraulic oil interface B.
Below in conjunction with the working principle schematic representation, introduce the working principle of the high low pressure handover control system that present embodiment provides.
Please referring to Fig. 2, Fig. 2 is the principle schematic when the high low pressure handover control system is in the operating on low voltage state among Fig. 1, and thick line is hydraulic oil circulation pipeline among Fig. 2.
As shown in Figure 2, the filler opening of the first three-way valve 3 is communicated with the first oil outlet, the first filler opening of the second three-way valve 4 is communicated with the second filler opening, when the second filler opening of the 3rd three-way valve 5 is communicated with oil outlet, in the rod chamber of the first hydraulic oil interface A and the first oil cylinder 1, the rodless cavity of the first oil cylinder 1 is communicated with the rodless cavity of the second oil cylinder 2, the rod chamber of the second oil cylinder 2 is communicated with the second hydraulic oil interface B, the first hydraulic oil interface A, hydraulic oil can enter respectively the rod chamber of the first oil cylinder 1 in the second hydraulic oil interface B, the rod chamber of the second oil cylinder 2, and then drive the first oil cylinder 1, the second oil cylinder 2 synchronization motions, the first oil cylinder 1, the 2 common driving conveying cylinder work of the second oil cylinder, this moment, pumping system belonged to the operating on low voltage state.
Please referring to Fig. 3, Fig. 3 is the principle schematic when the high low pressure handover control system is in the high-pressure work state among Fig. 1, and thick line is hydraulic oil circulation pipeline among Fig. 3.
As shown in Figure 3, the filler opening of the second three-way valve 4 is communicated with the second oil outlet, the first filler opening of the first three-way valve 3 is communicated with the second filler opening, when the first filler opening of the 3rd three-way valve 5 is communicated with oil outlet, the first hydraulic oil interface A is communicated with the rodless cavity of the second oil cylinder 2, the rod chamber of the second oil cylinder 2 is communicated with the rod chamber of the first oil cylinder 1, the rodless cavity of the first oil cylinder 1 is communicated with the second hydraulic oil interface B, the first hydraulic oil interface A, hydraulic oil can enter respectively the rodless cavity of the first oil cylinder 1 in the second hydraulic oil interface B, the rodless cavity of the second oil cylinder 2, and then drive the first oil cylinder 1, the second oil cylinder 2 synchronization motions, the first oil cylinder 1, the 2 common driving conveying cylinder work of the second oil cylinder, this moment, pumping system belonged to the high-pressure work state.
The high low pressure handover control system of this structure, only need can realize just that by three three-way valve the working state between master cylinder rod chamber, the rodless cavity switches, realize the switching between the pumping system high low pressure working state, three three-way valve connected sums disconnect and can realize by manually-operable, electric control operation and hydraulic controlled operation, the high low pressure switch speed is fast, can avoid the equipment failure that causes excessively slowly because of the high low pressure switch speed; This control system only needs three three-way valve, and is simple in structure, and the volume and weight of valve piece is all less, and then can lower the weight of car load, and cost is lower.
In the preferred version, the first three-way valve 3, the second three-way valve 4, the 3rd three-way valve 5 can be selected tee ball valve, the advantage such as that tee ball valve has is simple in structure, cost is lower.
In the concrete scheme; the first three-way valve 3, the second three-way valve 4, the 3rd three-way valve 5 can be respectively or are all adopted in three-way solenoid valve, manual three-way valve or the hydraulic controlled triple valve one or more; according to above-mentioned working principle; can adopt manually-operable, electric control operation or hydraulic controlled operation that corresponding three-way valve is communicated with or disconnect; to realize the working state switching between master cylinder rod chamber, the rodless cavity, above scheme all should be in protection scope of the present invention.
Among the above embodiment, master cylinder comprise first can synchronization motion the first oil cylinder 1, the second oil cylinder 2, high low pressure handover control system provided by the invention is not limited to this, master cylinder can also comprise can synchronization motion the first oil cylinder group, the second oil cylinder group, the first oil cylinder group can comprise the oil cylinder of the parallel connection that is no less than, the second oil cylinder group also can comprise the oil cylinder of the parallel connection that is no less than, following examples are simply introduced this scheme take the first oil cylinder group of the oil cylinder that all has two parallel connections, the second oil cylinder group as example.
Please referring to Fig. 4, Fig. 4 is the principle schematic of the second embodiment of high low pressure handover control system provided by the present invention.
As shown in Figure 4, this high low pressure handover control system comprises the first oil cylinder group, the second oil cylinder group, the first hydraulic oil interface A, the second hydraulic oil interface B and the first three-way valve 3, the second three-way valve 4, the 3rd three-way valve 5.
Particularly, the first oil cylinder group comprises the 3rd oil cylinder 1-1, the 4th oil cylinder 1-2 in parallel, the rod chamber of the first oil cylinder group comprises the rod chamber of the 3rd oil cylinder 1-1, the rod chamber of the 4th oil cylinder 1-2, be communicated with the rod chamber of the first oil cylinder group, namely be communicated with the rod chamber of the 3rd oil cylinder 1-1, the rod chamber of the 4th oil cylinder 1-2 simultaneously; The rodless cavity of the first oil cylinder 1 comprises the rodless cavity of the 3rd oil cylinder 1-1, the rodless cavity of the 4th oil cylinder 1-2, is communicated with the rodless cavity of the first oil cylinder group, namely is communicated with the rodless cavity of the 3rd oil cylinder 1-1, the rodless cavity of the 4th oil cylinder 1-2 simultaneously.
Described the second oil cylinder group comprises that the rod chamber of the 5th oil cylinder 2-1, the 6th oil cylinder 2-2, described the second oil cylinder group comprises the rod chamber of the rod chamber of the 5th oil cylinder 2-1, the 6th oil cylinder 2-2, be communicated with the rod chamber of the second oil cylinder group, namely be communicated with the rod chamber of the 5th oil cylinder 2-1, the rod chamber of the 6th oil cylinder 2-2 simultaneously; The rodless cavity of described the second oil cylinder group comprises the rodless cavity of described the 5th oil cylinder 2-1, the rodless cavity of described the 5th oil cylinder 2-1, is communicated with the rodless cavity of the second oil cylinder group, namely is communicated with the rodless cavity of the 5th oil cylinder 2-1, the rodless cavity of the 6th oil cylinder 2-2 simultaneously.
The filler opening of described the first three-way valve 3 is communicated with described the first hydraulic oil interface A, and the first oil outlet of described the first three-way valve 3, the second oil outlet are communicated with the rod chamber of described the first oil cylinder group, the rod chamber of described the second oil cylinder group respectively; The filler opening of described the second three-way valve 4 is communicated with described the first hydraulic oil interface A, and the first oil outlet of described the second three-way valve 4, the second oil outlet are communicated with the rodless cavity of described the first oil cylinder group, the rodless cavity of described the second oil cylinder group respectively; The first filler opening of described the 3rd three-way valve 5, the second filler opening are communicated with the rodless cavity of the first oil cylinder group, the rod chamber of the second oil cylinder group respectively, and the oil outlet of the 3rd three-way valve 5 is communicated with described the second hydraulic oil interface B.
Remaining specific implementation process is similar to the above embodiments, no longer is described in detail at this.
In the above-described embodiments; the first oil cylinder group has the oil cylinder of two parallel connections, the oil cylinder that the second oil cylinder group has two parallel connections; the present invention is not limited thereto; the first oil cylinder group also can be had an oil cylinder of an oil cylinder or a plurality of parallel connections; equally; but for so that the second oil cylinder group and the first oil cylinder group synchronization motion; the second oil cylinder group also can correspondingly have the oil cylinder of an oil cylinder or a plurality of parallel connections; those skilled in the art can be according to actual needs; select arbitrarily oil cylinder quantity, above scheme all should be in protection scope of the present invention.
Among the above embodiment, hydraulic valve bank comprises three three-way valve, and the invention be not limited to this, can also comprise the situation of two three-way valve, three three-way valve in the hydraulic valve bank, following examples are simply introduced this two schemes.
Please referring to Fig. 5, Fig. 5 is the principle schematic of the third embodiment of high low pressure handover control system provided by the present invention.
As shown in Figure 5, high low pressure handover control system provided by the invention comprises the first oil cylinder 1, the second oil cylinder 2, the first hydraulic oil interface A, the second hydraulic oil interface B and the 4th three-way valve 6, the 5th three-way valve 7, the first Twoway valves group 8, and wherein the first Twoway valves group 8 is formed in parallel by two Twoway valvess; The first hydraulic oil interface A, the second hydraulic oil interface B can be communicated with the hydraulic oil oil outlet of oil hydraulic pump respectively, and the first hydraulic oil interface A, the second hydraulic oil interface B all can provide the hydraulic oil with certain pressure; The first oil cylinder 1, the second oil cylinder 2 consist of the master cylinder of concrete pumping system.
The filler opening of the 4th three-way valve 6 is communicated with the first hydraulic oil interface A, and the first oil outlet of the 4th three-way valve 6, the second oil outlet are communicated with the rod chamber of the first oil cylinder 1, the rod chamber of the second oil cylinder 2 respectively; The filler opening of the 5th three-way valve 7 is communicated with the first hydraulic oil interface A, and the first oil outlet of the 5th three-way valve 7, the second oil outlet are communicated with the rodless cavity of the first oil cylinder 1, the rodless cavity of the second oil cylinder 2 respectively; The first filler opening of the first Twoway valves group 8, the second filler opening are communicated with the rod chamber of the rodless cavity of the first oil cylinder 1, the second oil cylinder 2 respectively, the oil outlet of the first Twoway valves group 8 is communicated with the second hydraulic oil interface B.
Below in conjunction with the working principle schematic representation, introduce the working principle of the high low pressure handover control system that present embodiment provides.
Please referring to Fig. 6, Fig. 6 is the principle schematic when the high low pressure handover control system is in the operating on low voltage state among Fig. 5, and thick line is hydraulic oil circulation pipeline among Fig. 6.
As shown in Figure 6, the filler opening of the 4th three-way valve 6 is communicated with the first oil outlet, the first filler opening of the 5th three-way valve 7 is communicated with the second filler opening, when the second filler opening of the first Twoway valves group 8 is communicated with oil outlet, in the rod chamber of the first hydraulic oil interface A and the first oil cylinder 1, the rodless cavity of the first oil cylinder 1 is communicated with the rodless cavity of the second oil cylinder 2, the rod chamber of the second oil cylinder 2 is communicated with the second hydraulic oil interface B, the first hydraulic oil interface A, hydraulic oil can enter respectively the rod chamber of the first oil cylinder 1 in the second hydraulic oil interface B, the rod chamber of the second oil cylinder 2, and then drive the first oil cylinder 1, the second oil cylinder 2 synchronization motions, the first oil cylinder 1, the 2 common driving conveying cylinder work of the second oil cylinder, this moment, pumping system belonged to the operating on low voltage state.
Please referring to Fig. 7, Fig. 7 is the principle schematic when the high low pressure handover control system is in the high-pressure work state among Fig. 5, and thick line is hydraulic oil circulation pipeline among Fig. 7.
As shown in Figure 7, the filler opening of the 5th three-way valve 7 is communicated with the second oil outlet, the first filler opening of the 4th three-way valve 6 is communicated with the second filler opening, when the first filler opening of the first Twoway valves group 8 is communicated with oil outlet, the first hydraulic oil interface A is communicated with the rodless cavity of the second oil cylinder 2, the rod chamber of the second oil cylinder 2 is communicated with the rod chamber of the first oil cylinder 1, the rodless cavity of the first oil cylinder 1 is communicated with the second hydraulic oil interface B, the first hydraulic oil interface A, hydraulic oil can enter respectively the rodless cavity of the first oil cylinder 1 in the second hydraulic oil interface B, the rodless cavity of the second oil cylinder 2, and then drive the first oil cylinder 1, the second oil cylinder 2 synchronization motions, the first oil cylinder 1, the 2 common driving conveying cylinder work of the second oil cylinder, this moment, pumping system belonged to the high-pressure work state.
Please referring to Fig. 8, Fig. 8 is the principle schematic of the 4th kind of embodiment of high low pressure handover control system provided by the present invention.
As shown in Figure 8, high low pressure handover control system provided by the invention comprises the first oil cylinder 1, the second oil cylinder 2, the first hydraulic oil interface A, the second hydraulic oil interface B and the 4th three-way valve 6, the second Twoway valves group 9-1, the 3rd Twoway valves group 9-2, and wherein the second Twoway valves group 9-1, the 3rd Twoway valves group 9-2 are formed in parallel by two Twoway valvess; The first hydraulic oil interface A, the second hydraulic oil interface B can be communicated with the hydraulic oil oil outlet of oil hydraulic pump respectively, and the first hydraulic oil interface A, the second hydraulic oil interface B all can provide the hydraulic oil with certain pressure; The first oil cylinder 1, the second oil cylinder 2 consist of the master cylinder of concrete pumping system.
The filler opening of the 4th three-way valve 6 is communicated with the first hydraulic oil interface A, and the first oil outlet of the 4th three-way valve 6, the second oil outlet are communicated with the rod chamber of the first oil cylinder 1, the rod chamber of the second oil cylinder 2 respectively; The filler opening of the second Twoway valves group 9-1 is communicated with the first hydraulic oil interface A, and the first oil outlet of the second Twoway valves group 9-1, the second oil outlet are communicated with the rodless cavity of the first oil cylinder 1, the rodless cavity of the second oil cylinder 2 respectively; The first filler opening of the 3rd Twoway valves group 9-2, the second filler opening are communicated with the rod chamber of the rodless cavity of the first oil cylinder 1, the second oil cylinder 2 respectively, the oil outlet of the 3rd Twoway valves group 9-2 is communicated with the second hydraulic oil interface B.
Below in conjunction with the working principle schematic representation, introduce the working principle of the high low pressure handover control system that present embodiment provides.
Please referring to Fig. 9, Fig. 9 is the principle schematic when the high low pressure handover control system is in the operating on low voltage state among Fig. 8, and thick line is hydraulic oil circulation pipeline among Fig. 9.
As shown in Figure 9, the filler opening of the 4th three-way valve 6 is communicated with the first oil outlet, the first filler opening of the second Twoway valves group 9-1 is communicated with the second filler opening, when the second filler opening of the 3rd Twoway valves group 9-2 is communicated with oil outlet, in the rod chamber of the first hydraulic oil interface A and the first oil cylinder 1, the rodless cavity of the first oil cylinder 1 is communicated with the rodless cavity of the second oil cylinder 2, the rod chamber of the second oil cylinder 2 is communicated with the second hydraulic oil interface B, the first hydraulic oil interface A, hydraulic oil can enter respectively the rod chamber of the first oil cylinder 1 in the second hydraulic oil interface B, the rod chamber of the second oil cylinder 2, and then drive the first oil cylinder 1, the second oil cylinder 2 synchronization motions, the first oil cylinder 1, the 2 common driving conveying cylinder work of the second oil cylinder, this moment, pumping system belonged to the operating on low voltage state.
Please referring to Figure 10, Figure 10 is the principle schematic when the high low pressure handover control system is in the high-pressure work state among Fig. 9, and thick line is hydraulic oil circulation pipeline among Figure 10.
As shown in figure 10, the filler opening of the second Twoway valves group 9-1 is communicated with the second oil outlet, the first filler opening of the 4th three-way valve 6 is communicated with the second filler opening, when the first filler opening of the 3rd Twoway valves group 9-2 is communicated with oil outlet, the first hydraulic oil interface A is communicated with the rodless cavity of the second oil cylinder 2, the rod chamber of the second oil cylinder 2 is communicated with the rod chamber of the first oil cylinder 1, the rodless cavity of the first oil cylinder 1 is communicated with the second hydraulic oil interface B, the first hydraulic oil interface A, hydraulic oil can enter respectively the rodless cavity of the first oil cylinder 1 in the second hydraulic oil interface B, the rodless cavity of the second oil cylinder 2, and then drive the first oil cylinder 1, the second oil cylinder 2 synchronization motions, the first oil cylinder 1, the 2 common driving conveying cylinder work of the second oil cylinder, this moment, pumping system belonged to the high-pressure work state.
The present invention also provides a kind of concrete pumping system, comprises hydraulic system, above-mentioned high low pressure handover control system, and the hydraulic fluid port of described hydraulic system is communicated with described the first hydraulic oil interface or described the second hydraulic oil interface.Because above-mentioned height handover control system possesses above-mentioned technique effect, the concrete pumping system with this high low pressure handover control system also should possess above-mentioned technique effect, no longer is described in detail at this.
The present invention also provides a kind of concrete pumping equipment, and this concrete pumping equipment comprises above-mentioned concrete pumping system.Because above-mentioned concrete pumping system possesses above-mentioned technique effect, the concrete pumping equipment with this concrete pumping system also should possess above-mentioned technique effect, no longer is described in detail at this.
The above only is the description of the preferred implementation of invention; should be understood that; because the finiteness of literal expression; and objectively have unlimited concrete structure; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. high low pressure handover control system, comprise the first oil cylinder group, the second oil cylinder group, the first hydraulic oil interface, the second hydraulic oil interface, hydraulic valve bank and hydraulic pipe line, hydraulic valve bank has at least two kinds of work in combination states, under its a kind of working state, two group oil cylinder rod chambers are communicated with described the first hydraulic oil interface, described the second hydraulic oil interface respectively; Under another kind of working state, two group oil cylinder rodless cavities are communicated with described the first hydraulic oil interface, described the second hydraulic oil interface respectively, it is characterized in that, described hydraulic valve bank comprises a three-way valve at least, and a port of described three-way valve is communicated with the rod chamber of described the first oil cylinder group, the another port is communicated with the rod chamber of described the second oil cylinder group, and the 3rd port is communicated with described the first hydraulic oil interface or described the second hydraulic oil interface; Or a port of described three-way valve is communicated with the rodless cavity of described the first oil cylinder group, and the another port is communicated with the rodless cavity of described the second oil cylinder group, and the 3rd port is communicated with described the first hydraulic oil interface or described the second hydraulic oil interface.
2. high low pressure handover control system according to claim 1 is characterized in that, described hydraulic valve bank comprises the first three-way valve (3), the second three-way valve (4), the 3rd three-way valve (5); The filler opening of described the first three-way valve (3) is communicated with described the first hydraulic oil interface, and the first oil outlet of described the first three-way valve (3), the second oil outlet are communicated with the rod chamber of described the first oil cylinder group, the rod chamber of described the second oil cylinder group respectively; The filler opening of described the second three-way valve (4) is communicated with described the first hydraulic oil interface, and the first oil outlet of described the second three-way valve (4), the second oil outlet are communicated with the rodless cavity of described the first oil cylinder group, the rodless cavity of described the second oil cylinder group respectively; The first filler opening of described the 3rd three-way valve (5), the second filler opening are communicated with the rodless cavity of the first oil cylinder group, the rod chamber of the second oil cylinder group respectively, and the oil outlet of the 3rd three-way valve (5) is communicated with described the second hydraulic oil interface.
3. high low pressure handover control system according to claim 1 is characterized in that, described hydraulic valve bank comprises the 4th three-way valve (6), the 5th three-way valve (7), the first Twoway valves group (8); The filler opening of described the 4th three-way valve (6) is communicated with described the first hydraulic oil interface, and the first oil outlet of described the 4th three-way valve (6), the second oil outlet are communicated with the rod chamber of described the first oil cylinder group, the rod chamber of described the second oil cylinder group respectively; The filler opening of described the 5th three-way valve (7) is communicated with described the first hydraulic oil interface, and the first oil outlet of described the 5th three-way valve (7), the second oil outlet are communicated with the rodless cavity of described the first oil cylinder group, the rodless cavity of described the second oil cylinder group respectively; The first filler opening of described the first Twoway valves group (8), the second filler opening are communicated with the rodless cavity of the first oil cylinder group, the rod chamber of the second oil cylinder group respectively, and the oil outlet of the first Twoway valves group (8) is communicated with described the second hydraulic oil interface.
4. high low pressure handover control system according to claim 1 is characterized in that, described hydraulic valve bank comprises the 4th three-way valve (6), the second Twoway valves group (9-1), the 3rd Twoway valves group (9-2); The filler opening of described the 4th three-way valve (6) is communicated with described the first hydraulic oil interface, and the first oil outlet of described the 4th three-way valve (6), the second oil outlet are communicated with the rod chamber of described the first oil cylinder group, the rod chamber of described the second oil cylinder group respectively; The filler opening of described the second Twoway valves group (9-1) is communicated with described the first hydraulic oil interface, and the first oil outlet of described the second Twoway valves group (9-1), the second oil outlet are communicated with the rodless cavity of described the first oil cylinder group, the rodless cavity of described the second oil cylinder group respectively; The first filler opening of described the 3rd Twoway valves group (9-2), the second filler opening are communicated with the rodless cavity of the first oil cylinder group, the rod chamber of the second oil cylinder group respectively, and the oil outlet of the 3rd Twoway valves group (9-2) is communicated with described the second hydraulic oil interface.
5. each described high low pressure handover control system is characterized in that according to claim 2-4, and described the first oil cylinder group comprises that the first oil cylinder (1), described the second oil cylinder group comprise the second oil cylinder (2).
6. each described high low pressure handover control system according to claim 2-4, it is characterized in that, described the first oil cylinder group comprises the 3rd oil cylinder (1-1), the 4th oil cylinder (1-2), the rod chamber of described the first oil cylinder group comprises the rod chamber of described the 3rd oil cylinder (1-1), the rod chamber of described the 4th oil cylinder (1-2), and the rodless cavity of described the first oil cylinder group comprises the rodless cavity of described the 3rd oil cylinder (1-1), the rodless cavity of described the 4th oil cylinder (1-2); Described the second oil cylinder group comprises the 5th oil cylinder (2-1), the 6th oil cylinder (2-2), the rod chamber of described the second oil cylinder group comprises the rod chamber of described the 5th oil cylinder (2-1), the rod chamber of described the 6th oil cylinder (2-2), and the rodless cavity of described the second oil cylinder group comprises the rodless cavity of described the 5th oil cylinder (2-1), the rodless cavity of described the 6th oil cylinder (2-2).
7. each described high low pressure handover control system is characterized in that according to claim 1-4, and three-way valve is tee ball valve in the described hydraulic valve bank.
8. high low pressure handover control system according to claim 7 is characterized in that, described three-way valve is three-way solenoid valve, manual three-way valve or hydraulic controlled triple valve.
9. a concrete pumping system is characterized in that, comprises hydraulic system, each described high low pressure handover control system of claim 1-8, and the hydraulic fluid port of described hydraulic system is communicated with described the first hydraulic oil interface or described the second hydraulic oil interface.
10. a concrete pumping equipment is characterized in that, this concrete pumping equipment comprises concrete pumping system claimed in claim 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110112743 CN102168696B (en) | 2011-05-03 | 2011-05-03 | High-low pressure switching control system, concrete pumping system and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110112743 CN102168696B (en) | 2011-05-03 | 2011-05-03 | High-low pressure switching control system, concrete pumping system and device |
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| CN102168696B true CN102168696B (en) | 2013-03-20 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102410185B (en) * | 2011-09-15 | 2015-06-17 | 北京市三一重机有限公司 | Plunger type high-pressure water pump system and high and low-pressure mode switching method thereof |
| CN105626606B (en) * | 2014-10-27 | 2017-09-26 | 中联重科股份有限公司 | Hydraulic system of concrete pumping equipment and concrete pumping equipment |
| CN110397641A (en) * | 2019-08-21 | 2019-11-01 | 山河智能装备股份有限公司 | Automatic high/low pressure switches hydraulic system, control method and its application |
| CN110541715A (en) * | 2019-10-15 | 2019-12-06 | 徐州徐工基础工程机械有限公司 | Mud control system and push bench |
| CN114321057B (en) * | 2021-11-18 | 2023-10-20 | 斯特林液压制造(宁波)有限公司 | Pumping main valve |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD214651A1 (en) * | 1983-03-30 | 1984-10-17 | Leipzig Metallgusswerk | ARRANGEMENT OF PRESSURE TRANSLATORS IN HYDROSTATIC CIRCUITS |
| SU1733719A1 (en) * | 1989-09-21 | 1992-05-15 | Азербайджанский научно-исследовательский и проектно-конструкторский институт нефтяного машиностроения | Hydraulic pressure converter |
| CN2345797Y (en) * | 1998-06-29 | 1999-10-27 | 三一重工业集团有限公司 | High and low pressure switching device for concrete transportation pump |
| CN2523997Y (en) * | 2001-12-17 | 2002-12-04 | 湖北建设机械股份有限公司 | Two digit and two way inserted valve style high pressure and low pressure switching valve |
| KR20060003131A (en) * | 2004-07-05 | 2006-01-10 | 코리아유씨디주식회사 | Oil pressure controll system controlled by operating cylinder for concrete pump car |
| CN201363329Y (en) * | 2009-02-16 | 2009-12-16 | 谢蔚敏 | High and low pressure switching valve for oil cylinder |
| CN201836004U (en) * | 2010-04-30 | 2011-05-18 | 长沙中联重工科技发展股份有限公司 | Hydraulic system |
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