CN114109942A - Hydraulic static pile press and hydraulic control system thereof - Google Patents
Hydraulic static pile press and hydraulic control system thereof Download PDFInfo
- Publication number
- CN114109942A CN114109942A CN202111602596.9A CN202111602596A CN114109942A CN 114109942 A CN114109942 A CN 114109942A CN 202111602596 A CN202111602596 A CN 202111602596A CN 114109942 A CN114109942 A CN 114109942A
- Authority
- CN
- China
- Prior art keywords
- valve
- oil
- main
- control
- hydraulic control
- 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.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a hydraulic static pile driver and a hydraulic control system thereof, wherein the hydraulic control system comprises a multi-way valve main valve, a quick-pressing valve group, a quick-return valve group, a main oil cylinder and an auxiliary oil cylinder, the quick-pressing valve group is integrally arranged on the main oil cylinder, the quick-return valve group is integrally arranged on the auxiliary oil cylinder, the multi-way valve main valve is connected with the quick-pressing valve group, and the multi-way valve main valve is connected with the quick-return valve group. The hydraulic control system can realize the integrated arrangement of the multi-way valve main valve and the hydraulic valve group, thereby simplifying the pipeline arrangement, reducing the operation labor intensity, reducing the energy consumption and improving the working efficiency, and the pressure grade of the system is high enough to meet the development requirement of high-pressure equipment.
Description
Technical Field
The invention relates to the technical field of hydraulic control, in particular to a hydraulic control system. The invention also relates to a hydrostatic pile press with the hydraulic control system.
Background
The hydraulic static pile press is widely used in foundation construction equipment, and its core hydraulic control elements include pile pressing multiple-way valve, walking multiple-way valve, landing leg multiple-way valve and other manual multiple-way control valves, and confluence valve set, oil drain valve set and other distributed control valve sets.
When a hydraulic system in the prior art is in a fast-pressing working condition, oil returning from a small cavity of an oil cylinder firstly passes through a long pipeline, then passes through the internal fast-pressing connection of a multi-way valve, and then returns to a large cavity of the oil cylinder through a long pipeline, so that the pressure loss is high, the energy waste is large, and the improvement of the equipment efficiency is not facilitated.
Therefore, as the optimization requirements of the control system of the pile press machine are higher and higher, and the control for energy conservation is stricter, the technical personnel in the field need to provide a hydraulic control system of the pile press machine with high integration, low pressure loss and high working efficiency in due time.
Disclosure of Invention
The invention aims to provide a hydraulic control system which can realize the integrated arrangement of a control valve and a hydraulic pipeline, thereby simplifying the pipeline arrangement, reducing the operation labor intensity, reducing the energy consumption and improving the working efficiency. Another object of the present invention is to provide a hydrostatic pile press comprising the above hydraulic control system.
In order to achieve the purpose, the invention provides a hydraulic control system which comprises a multi-way valve main valve, a quick-pressure valve group, a quick-return valve group, a main pressure oil cylinder and an auxiliary pressure oil cylinder, wherein the quick-pressure valve group is integrally arranged on the main pressure oil cylinder, the quick-return valve group is integrally arranged on the auxiliary pressure oil cylinder, the multi-way valve main valve is connected with the quick-pressure valve group, and the multi-way valve main valve is connected with the quick-return valve group.
Optionally, the multi-way valve main valve comprises a multi-way valve main body and a main overflow valve two-stage control valve group, and the main overflow valve two-stage control valve group is integrally arranged on the multi-way valve main body.
Optionally, the multi-way valve body comprises a first semi-integral valve and a second semi-integral valve;
the first half integral valve comprises a pile clamping connection, a main pressing connection, an oil inlet connection I, a longitudinal movement connection II, a longitudinal movement connection I, a supporting leg quadruple and a supporting leg triple;
the second half integral valve comprises an auxiliary pressure first connection, an auxiliary pressure second connection, an oil inlet second connection, a transverse moving first connection, a supporting leg second connection and a supporting leg first connection.
Optionally, the main valve of the multiway valve further comprises a main oil return path arranged inside the multiway valve main body and connected with an oil return tank;
the main overflow valve two-stage control valve group comprises a first bypass cut-off control valve, a first damping hole, a second bypass cut-off control valve, a second damping hole, a second-stage overflow valve and a main overflow valve;
the first bypass cut-off control valve is connected with a first external pilot oil source through an external control oil port X1, and the first external pilot oil source is connected with the external control oil port X1 and then acts on the first bypass cut-off control valve through the first damping hole;
the second bypass cutoff control valve is connected with a second external pilot oil source through an external control oil port X2, and the second external pilot oil source is connected with the external control oil port X2 and then acts on the second bypass cutoff control valve through the second damping hole;
a control port of the main overflow valve is sequentially connected in series with the first bypass cut-off control valve and the second bypass cut-off control valve through a control oil path and then is communicated with the main oil return path;
and the oil inlet of the secondary overflow valve is communicated with a series pipeline between the first bypass cut-off control valve and the second bypass cut-off control valve, and the oil outlet and the control oil port of the secondary overflow valve are communicated with the main oil return path.
Optionally, the system further comprises an upper signal control path connected to the first bypass cut-off control valve and a lower signal control path connected to the second bypass cut-off control valve;
the upper signal control circuit is sequentially connected in series with the auxiliary pressure first joint, the auxiliary pressure second joint, the pile clamping joint and the main pressure joint and then is communicated with the main oil return circuit;
the lower signal control circuit is sequentially connected in series with the longitudinal movement duplex, the longitudinal movement one-link, the supporting leg quadruple, the supporting leg triple, the supporting leg one-link, the supporting leg duplex, the transverse movement one-link and the transverse movement duplex and then is communicated with the main oil return circuit.
Optionally, the first oil inlet joint and the second oil inlet joint are communicated through a channel and then are branched into a first lower parallel path and a second lower parallel path, the first lower parallel path is connected with the longitudinal movement duplex, the support leg quadruple and the support leg triplex in parallel, the second lower parallel path is connected with the transverse movement duplex, the support leg duplex and an oil inlet of the main overflow valve in parallel, and an oil return port of the main overflow valve is communicated with the main oil return path;
the oil inlet connection I comprises a pump oil inlet P1, the oil inlet connection II comprises a pump oil inlet P2, the pump oil inlet P1 is connected with a forward oil inlet of a one-way valve II, the pump oil inlet P2 is connected with a forward oil inlet of the one-way valve I, a forward oil outlet of the one-way valve II and a forward oil outlet of the one-way valve I are branched into an upper parallel connection I and an upper parallel connection II after being communicated through a flow channel, the upper parallel connection I is connected with the main pressure connection and the pile clamping connection in parallel, and the upper parallel connection II is connected with the auxiliary pressure connection I and the auxiliary pressure connection in parallel.
Optionally, the fast pressure valves group includes fast pressure valve body and fast pressure change over valve, the internal portion of fast pressure valve is equipped with the runner, fast pressure change over valve locates fast pressure valve body is last, fast pressure change over valve's forward oil inlet with the loculus of main pressure oil cylinder is connected, fast pressure change over valve's forward working oil port A22 with main pressure oil cylinder's big chamber is connected, fast pressure change over valve's forward working oil port B22 with the valve main valve is connected, fast pressure change over valve's hydraulic control hydraulic fluid port is connected with the external control source.
Optionally, the quick return valve group includes a large-cavity hydraulic control one-way valve and a small-cavity hydraulic control one-way valve, a forward oil outlet of the large-cavity hydraulic control one-way valve is communicated with a large cavity of the secondary pressure oil cylinder, a hydraulic control oil port of the large-cavity hydraulic control one-way valve is connected with an external control source, a forward oil inlet of the large-cavity hydraulic control one-way valve is communicated with a forward oil inlet of the small-cavity hydraulic control one-way valve and an external oil tank, and a forward oil outlet of the small-cavity hydraulic control one-way valve is communicated with a small cavity of the secondary pressure oil cylinder.
Optionally, the multi-way valve further comprises an oil discharge valve bank, wherein the main valve of the multi-way valve is connected with the quick-pressure valve bank through the oil discharge valve bank, and the oil discharge valve bank is connected with an external oil tank;
the oil discharge valve group comprises a first hydraulic control one-way valve, a forward oil inlet of the first hydraulic control one-way valve is connected with an external oil tank, a forward oil outlet of the first hydraulic control one-way valve is connected with a large cavity of the main pressure oil cylinder, and a hydraulic control oil port of the first hydraulic control one-way valve is connected with an external control source; and opening the first hydraulic control one-way valve through the external control source to enable hydraulic oil in the large cavity of the main hydraulic oil cylinder to reversely pass through the first hydraulic control one-way valve and then return to the external oil tank when the pile is lifted.
The invention also provides a hydraulic static pile driver, which comprises the hydraulic control system.
Compared with the background art, the hydraulic control system provided by the embodiment of the invention comprises a multi-way valve main valve, a quick-pressure valve group, a quick-return valve group, a main pressure oil cylinder and an auxiliary pressure oil cylinder, wherein the quick-pressure valve group is integrally arranged on the main pressure oil cylinder to realize a quick-pressure function; the quick return valve group is integrally arranged on the auxiliary pressure oil cylinder to realize the quick return function; the main valve of the multi-way valve is connected with the quick-acting valve set, and the main valve of the multi-way valve is connected with the quick-acting valve set, so that the functions of pile pressing, pile clamping, force application, walking, lifting and the like of the pile pressing machine can be realized.
When the quick-pressing operation is carried out, a path from a small cavity of a main oil cylinder to a main valve of a multi-way valve is blocked by a quick-pressing valve group, so that hydraulic oil in the small cavity of the main oil cylinder is converged with hydraulic oil from the main valve of the multi-way valve at an inlet of the large cavity of the main oil cylinder after passing through the quick-pressing valve group and directly flows back to the large cavity of the main oil cylinder; when the quick lifting operation is carried out, the oil inlet and outlet channels of the auxiliary pressure oil cylinder are blocked, hydraulic oil is controlled to enter the small cavity of the main pressure oil cylinder through the multi-way valve main valve, the piston rod of the main pressure oil cylinder is lifted, the auxiliary pressure oil cylinder is pushed to return passively, when the piston rod of the auxiliary pressure oil cylinder is lifted quickly, a part of hydraulic oil in the large cavity of the auxiliary pressure oil cylinder enters the small cavity of the auxiliary pressure oil cylinder to be supplemented, redundant hydraulic oil enters the external oil tank through a pipeline, the quick lifting operation of the pile pressing machine is realized, and meanwhile, the quick return valve group is directly integrated on the auxiliary pressure oil cylinder, so that the pressure loss of a pipeline can be reduced, and the quick lifting efficiency is improved.
Therefore, compared with the traditional manual control pile driver multi-way valve, the control valve group is excessively distributed, so that the pipeline arrangement is messy, the operation labor intensity is high, oil leakage points are multiple, the after-sale maintenance is inconvenient, and the requirement of high-pressure development of equipment cannot be met due to the adoption of the design of a machining flow passage, and the pressure grade is 25 MPa. The hydraulic control system provided by the embodiment of the invention can realize the integrated arrangement of the multi-way valve main valve and the hydraulic valve group, thereby simplifying the pipeline arrangement, reducing the operation labor intensity, reducing the energy consumption and improving the working efficiency, and the pressure grade of the system is high enough to meet the development requirement of equipment high-pressure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram of a hydraulic control system provided by an embodiment of the present invention;
FIG. 2 is a front view of a main valve of the multi-way valve according to the embodiment of the invention;
fig. 3 is a schematic diagram illustrating a principle of a lower signal control circuit and an upper signal control circuit according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a portion of a hydraulic circuit provided by an embodiment of the present invention;
fig. 5 is a schematic diagram of a fast pressure valve set provided by an embodiment of the present invention;
fig. 6 is a schematic diagram of a two-stage control valve bank of a main overflow valve according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a quick return valve assembly provided by an embodiment of the present invention;
FIG. 8 is a cross-sectional view taken at D-D of FIG. 2;
FIG. 9 is a cross-sectional view taken at E-E of FIG. 2;
FIG. 10 is a schematic diagram of a fuel outlet valve block provided in accordance with an embodiment of the present invention;
fig. 11 is a schematic connection diagram of a fast pressure valve set according to an embodiment of the present invention.
Wherein:
1-a multi-way valve main valve, 2-a fast pressure valve group, 3-a fast return valve group, 4-an oil discharge valve group, 5-an oil cylinder, 6-a lower signal control circuit, 7-an upper signal control circuit, 8-a lower parallel circuit I, 9-a lower parallel circuit II, 10-a main oil return circuit, 11-a multi-way valve main body, 12-a pile clamping valve group, 13-a main overflow valve two-stage control valve group, 14-a control oil circuit, 15-an upper parallel circuit I, 16-an upper parallel circuit II, 17-a one-way valve I, 18-a one-way valve II, 21-a fast pressure valve body and 22-a fast pressure switching valve;
111-a first half-integrated valve, 112-a second half-integrated valve;
121-pile clamping hydraulic control one-way valve;
131-a first bypass cut-off control valve, 132-a second bypass cut-off control valve, 133-a main overflow valve, 134-a first damping hole, 135-a second damping hole and 136-a secondary overflow valve;
301-large cavity hydraulic control one-way valve, 302-small cavity hydraulic control one-way valve;
401-hydraulic control one-way valve one;
501-a main pressure oil cylinder and 502-an auxiliary pressure oil cylinder;
1111-pile clamping connection, 1112-main pressing connection, 1113-oil inlet connection one, 1114-longitudinal movement connection, 1115-longitudinal movement connection one, 1116-supporting leg four connection and 1117-supporting leg triple;
1121-secondary pressure one joint, 1122-secondary pressure two joint, 1123-transverse movement two joint, 1124-transverse movement one joint, 1125-leg two joint, 1126-leg one joint and 1127-oil inlet two joint.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The core of the invention is to provide a hydraulic control system which can realize the integrated arrangement of a control valve and a hydraulic pipeline, thereby simplifying the pipeline arrangement, reducing the operation labor intensity, reducing the energy consumption and improving the working efficiency. Another core of the invention is to provide a hydrostatic pile press comprising the hydraulic control system.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, the hydraulic control system provided in the embodiment of the present invention includes a multi-way valve main valve 1, a fast pressure valve group 2, a fast return valve group 3, and an oil cylinder 5, where the oil cylinder 5 includes a main pressure oil cylinder 501 and an auxiliary pressure oil cylinder 502, and the fast pressure valve group 2 is integrally disposed on the main pressure oil cylinder 501 to implement a fast pressure function, so that hydraulic oil in a small cavity of the main pressure oil cylinder 501 no longer needs to flow back into a large cavity of the main pressure oil cylinder 501 through a long pipe loop, and a differential loop is directly implemented; the quick return valve group 3 is integrated on the auxiliary pressure oil cylinder 502 to realize the quick return function; the multi-way valve main valve 1 is connected with the pipeline of the quick-acting valve group 2, and the multi-way valve main valve 1 is connected with the pipeline of the quick-acting valve group 3.
In addition, the system still includes bleed valve group 4 and outside oil tank, and multiple unit valve main valve 1 is connected with the pipeline of quick-acting valve group 2 through bleed valve group 4, and bleed valve group 4 is connected with outside oil tank. By controlling the oil discharge valve group 4, when the pile lifting works, the hydraulic oil in the large cavity of the main hydraulic cylinder 501 directly returns to an external oil tank after passing through the oil discharge valve group 4, so that the efficiency of pile lifting operation can be improved, and the labor intensity of operation is reduced.
It should be noted that the multi-way valve main valve 1 includes two half-integrally cast multi-way valve structures, is cast and molded by using QT500 material, and has a pressure level of 35MPa, so as to realize functions of pile pressing, pile clamping, force application, traveling, lifting and the like.
Compared with the traditional manual control pile press machine multi-way valve, the adopted pile press valve, the landing leg valve and the walking valve are separated, and valve blocks with auxiliary functions are added, so that the arrangement of the control valve group is too dispersed, the pipeline arrangement is messy, the operation labor intensity is high, oil leakage points are many, after-sale maintenance is inconvenient, the appearance is not attractive, and the requirement of equipment high-pressure development cannot be met due to the adoption of the design of a machining flow channel, the pressure grade is 25 MPa. The hydraulic control system provided by the embodiment of the invention can realize the integrated arrangement of the multi-way valve main valve and the hydraulic valve group, and the traditional mode of three multi-way valve main valves and one basic valve block is changed into the mode of an integral multi-way valve, so that the pipeline arrangement can be simplified, the operation labor intensity can be reduced, the energy consumption can be reduced, the working efficiency can be improved, the pressure level of the system is high, the development requirement of high-pressure equipment can be met, and the operation capability is greatly improved.
Specifically, the multi-way valve main valve 1 includes a multi-way valve main body 11, a pile clamping valve group 12 and a main overflow valve two-stage control valve group 13, the multi-way valve main valve 1 further includes a main oil return path 10, the main oil return path 10 is disposed inside the multi-way valve main body 11 and connected with an oil return box, and the pile clamping valve group 12 and the main overflow valve two-stage control valve group 13 are integrally disposed on the multi-way valve main body 11.
Referring to fig. 2, 3, 8 and 9, the multiplex valve body 11 includes a first semi-integral valve 111 and a second semi-integral valve 112. The first half whole valve 111 comprises a pile clamping unit 1111, a main pressure unit 1112, an oil inlet unit 1113, a longitudinal movement unit 1114, a longitudinal movement unit 1115, a support leg quadruple 1116 and a support leg triple 1117, and each linkage of the working unit is used as hydraulic pilot control; the second semi-integral valve 112 includes a secondary pressure one-way 1121, a secondary pressure two-way 1122, an oil inlet two-way 1127, a cross-travel two-way 1123, a cross-travel one-way 1124, a leg two-way 1125, and a leg one-way 1126, and the work connections each act as a hydraulic pilot control.
Referring to fig. 6, the main spill valve two-stage pilot valve group 13 includes a first bypass cut-off control valve 131, a first orifice 134, a second bypass cut-off control valve 132, a second orifice 135, a secondary spill valve 136, and a main spill valve 133. The first bypass cut-off control valve 131 is connected to a first external pilot oil source through an external control oil port X1, and the first external pilot oil source is connected to an external control oil port X1 and then acts on the first bypass cut-off control valve through a first orifice; the second bypass cut control valve 132 is connected to a second external pilot oil source through an external control port X2, and the second external pilot oil source is connected to an external control port X2 and then acts on the second bypass cut control valve through a second orifice.
Referring to fig. 6, 4 and 3, the control port of the main relief valve 133 is connected in series with the first bypass blocking control valve 131 and the second bypass blocking control valve 132 in sequence through the control oil path 14 and then communicated with the main oil return path 10; the oil inlet of the secondary overflow valve 136 is communicated with the series pipeline between the first bypass cut-off control valve 131 and the second bypass cut-off control valve 132, and the oil outlet and the control oil port of the secondary overflow valve 136 are both communicated with the main oil return path 10.
Further, referring to fig. 3, the hydraulic control system further includes an upper signal control circuit 7 connected to the first bypass cut-off control valve 131 and a lower signal control circuit 6 connected to the second bypass cut-off control valve 132; wherein, the upper signal control circuit 7 is connected in series with a secondary pressure one-connection 1121, a secondary pressure two-connection 1122, a pile clamping connection 1111 and a main pressure connection 1112 in sequence, and finally communicated with the main oil return circuit 10 for oil return; the lower signal control circuit 6 is sequentially connected in series with a longitudinal movement duplex 1114, a longitudinal movement duplex 1115, a support leg quadruple 1116, a support leg triple 1117, a support leg duplex 1126, a support leg duplex 1125, a transverse movement duplex 1124 and a transverse movement duplex 1123, and finally communicated with the main oil return circuit 10 to return oil.
Then, after the first external pilot oil source is connected to the port X1, the first external pilot oil source acts on the first bypass shutoff control valve 131 through the first orifice 134, and at the same time, the sub-pressure one-way 1121, the sub-pressure two-way 1122, the clamp pile one-way 1111, and the main pressure one-way 1112 are connected in series in this order through the upper signal control circuit 7, and finally, the first external pilot oil source communicates with the main oil return circuit 10 to return oil; through the connection, when any one of the secondary pressure one-way 1121, the secondary pressure two-way 1122, the pile clamping one-way 1111 and the primary pressure one-way 1112 is reversed, the passage of the oil return tank of the upper signal control circuit 7 is blocked, after the first external pilot oil source passes through the port X1, the first external pilot oil source acts on the valve core of the first bypass cutoff control valve 131 through the first damping hole 134 to push the valve core of the first bypass cutoff control valve 131 to be reversed, so that the pressure is built up in the primary relief valve 133, and at this time, the relief pressure of the primary relief valve 133 is determined by the set pressure of the primary relief valve 133.
After being connected with the port X2, the second external pilot oil source acts on the second bypass cutoff control valve 132 through the second damping hole 135, and at the same time, the lower signal control circuit 6 sequentially connects the longitudinal movement duplex 1114, the longitudinal movement duplex 1115, the leg quadruple 1116, the leg triplet 1117, the leg duplex 1126, the leg duplex 1125, the transverse movement duplex 1124 and the transverse movement duplex 1123 in series, and finally communicates with the main oil return circuit 10 to return oil; through the connection, when any one of the longitudinally moving double unions 1114, longitudinally moving one unions 1115, leg quadruples 1116, leg triple 1117, leg one unions 1126, leg unions 1125, traverse unions 1124 and traverse unions 1123 is reversed, the channel of the oil return tank of the lower signal control circuit 6 is blocked, after a second external pilot oil source passes through an opening X2, the second external pilot oil source acts on the valve core of the second bypass cutoff control valve 132 through the second damping hole 135 to push the valve core of the second bypass cutoff control valve 132 to be reversed, so that the pressure of the main overflow valve 133 is built up, at the moment, the overflow pressure of the main overflow valve 133 is determined by the secondary overflow valve 136, and it is noted that the set pressure of the secondary overflow valve 136 is lower than the set pressure of the main overflow valve 133.
This is done. Due to the fact that the main overflow valve two-stage control valve group 13 of the connecting structure is arranged, two-stage pressure control of pile pressing machine body movement and pile pressing can be achieved.
In addition, referring to fig. 4, the first oil inlet link 1113 and the second oil inlet link 1127 are communicated with each other through the passage and then branch into a first lower parallel link 8 and a second lower parallel link 9, and the first lower parallel link 8 is connected in parallel with the first longitudinal movement link 1114, the first longitudinal movement link 1115, the fourth leg link 1116 and the third leg link 1117; the lower parallel path II 9 is connected with the cross sliding duplex port 1123, the cross sliding duplex port 1124, the supporting leg duplex port 1125, the supporting leg duplex port 1126 and an oil inlet of the main overflow valve 133 in parallel, and an oil return port of the main overflow valve 133 is communicated with the main oil return path 10.
Referring to fig. 4, the first oil inlet joint 1113 includes a pump oil inlet P1, the second oil inlet joint 1127 includes a pump oil inlet P2, the pump oil inlet P1 is connected to the forward oil inlet of the second check valve 18, the pump oil inlet P2 is connected to the forward oil inlet of the first check valve 17, the forward oil outlet of the second check valve 18 and the forward oil outlet of the first check valve 17 are communicated through a flow passage and then branched into a first upper parallel path 15 and a second upper parallel path 16; the upper parallel circuit I15 is connected with a main pressing connection 1112 and a pile clamping connection 1111 in parallel; the upper parallel path II 16 is connected with an auxiliary pressure I-joint 1121 and an auxiliary pressure II-joint 1122 in parallel.
In this way, by providing the check valve one 17 and the check valve two 18, the flow passage in which the upper parallel passage one 15 and the upper parallel passage two 16 are located is isolated from the flow passage in which the lower parallel passage one 8 and the lower parallel passage two 9 are located, and because of the one-way conductivity of the check valve one 17 and the check valve two 18, the high pressure of the flow passage in which the upper parallel passage one 15 and the upper parallel passage two 16 are located does not cause impact on the flow passage in which the lower parallel passage one 8 and the lower parallel passage two 9 are located.
Referring to fig. 1 and 10, the oil discharge valve group 4 includes a first hydraulic control check valve 401, a forward oil inlet of the first hydraulic control check valve 401 is connected to an external oil tank, a forward oil outlet of the first hydraulic control check valve 401 is connected to a large cavity of the main pressure cylinder 501, a hydraulic control oil port of the first hydraulic control check valve 401 is connected to an external control source, the first hydraulic control check valve 401 is opened by the external control source, and then hydraulic oil in the large cavity of the main pressure cylinder 501 reversely passes through the first hydraulic control check valve 401 and directly returns to the external oil tank when the pile is lifted.
Referring to fig. 1, 5 and 11, a fast pressure valve group 2 is directly integrated on a main pressure cylinder 501, the fast pressure valve group 2 includes a fast pressure valve body 21 and a fast pressure switching valve 22, a flow passage is arranged inside the fast pressure valve body 21, the fast pressure switching valve 22 is arranged on the fast pressure valve body 21, a forward oil inlet of the fast pressure switching valve 22 is connected with a small cavity of the main pressure cylinder 501, a forward working oil port a22 of the fast pressure switching valve 22 is connected with a large cavity of the main pressure cylinder 501, a forward working oil port B22 of the fast pressure switching valve 22 is connected with an oil discharge valve group 4, and a hydraulic oil port of the fast pressure switching valve 22 is connected with a control source; during the quick-pressing action, the quick-pressing switching valve 22 is reversed through the control source to block the passage from the small cavity of the main oil cylinder 501 to the main valve 1 of the multi-way valve, so that the hydraulic oil in the small cavity of the main oil cylinder 501 passes through a forward working oil port A22 of the quick-pressing switching valve 22, then is merged with the hydraulic oil from the main pressure coupler in the multi-way valve at the inlet of the large cavity of the main oil cylinder 501, and directly flows back to the large cavity of the main oil cylinder 501; because the quick-pressure valve group 2 is directly integrated on the main pressure oil cylinder 501, when in quick-pressure action, the quick-pressure linkage flow does not need to flow back to the large cavity of the main pressure oil cylinder 501 through a long pipeline and the quick-pressure linkage in the multi-way valve, a differential loop is directly realized, and the problem of low supply efficiency of the large cavity hydraulic oil during quick pressure is effectively solved, so that the pressure loss of the quick-pressure working condition can be greatly reduced, and the operation speed is improved; and because the quick-pressing function is integrated on the main oil cylinder 501, the main valve 1 of the multi-way valve is not provided with a quick-pressing connection any more, and the structure of the main valve 1 of the multi-way valve is simplified.
Referring to fig. 1 and 7, the quick return valve group 3 is integrally arranged on the auxiliary pressure oil cylinder 502, the quick return valve group 3 includes a large cavity hydraulic control one-way valve 301 and a small cavity hydraulic control one-way valve 302, a forward oil outlet of the large cavity hydraulic control one-way valve 301 is communicated with a large cavity of the auxiliary pressure oil cylinder 502, a hydraulic control oil port of the large cavity hydraulic control one-way valve 301 is connected with an external control source, a forward oil inlet of the large cavity hydraulic control one-way valve 301 is communicated with a forward oil inlet of the small cavity hydraulic control one-way valve 302 and an external oil tank, and a forward oil outlet of the small cavity hydraulic control one-way valve 302 is communicated with a small cavity of the auxiliary pressure oil cylinder 502.
When the quick lifting operation is required, the position of the main pressure joint 1112 is changed through an external control source, at the moment, the valve cores of the auxiliary pressure first joint 1121 and the auxiliary pressure second joint 1122 are positioned at the middle position, and the oil inlet and outlet channels of the auxiliary pressure oil cylinder 502 are blocked, so that hydraulic oil from the oil inlet joint first 1113 and the oil inlet joint second 1127 enters the small cavity of the main pressure oil cylinder 501 after passing through the main pressure joint 1112, the piston rod of the main pressure oil cylinder 501 is lifted, and meanwhile, the auxiliary pressure oil cylinder 502 is pushed to return passively through an external mechanical device; when a piston rod of the auxiliary pressure oil cylinder 502 is quickly lifted, the large-cavity hydraulic control one-way valve 301 is controlled to be opened through an external control source, so that hydraulic oil in the large cavity of the auxiliary pressure oil cylinder 502 reversely passes through the large-cavity hydraulic control one-way valve 301, a part of hydraulic oil positively passes through the small-cavity hydraulic control one-way valve 302 and then enters the small cavity of the auxiliary pressure oil cylinder 502 for supplement, and redundant hydraulic oil enters an external oil tank through a pipeline, so that the quick lifting operation of the pile press is realized; meanwhile, the large-cavity hydraulic control one-way valve 301 and the small-cavity hydraulic control one-way valve 302 are directly integrated on the auxiliary pressure oil cylinder 502, so that the pressure loss of a pipeline can be reduced, and the quick lifting efficiency is improved.
Referring to fig. 4, the pile clamping valve group 12 includes a pile clamping hydraulic control one-way valve 121, the pile clamping hydraulic control one-way valve 121 is integrated on the multi-way valve main body 11, and a hydraulic control oil port of the pile clamping hydraulic control one-way valve 121 is communicated with a small cavity of the pile clamping oil cylinder; when pile clamping operation is needed, the position of a valve core of the pile clamping connection 1111 is changed through an external control source, so that hydraulic oil from the oil inlet connection one 1113 and the oil inlet connection two 1127 sequentially passes through the pile clamping connection 1111 and the pile clamping hydraulic control one-way valve 121 and then enters the upper cavity of the pile clamping oil cylinder, and the pile is clamped; when pile clamping is continued, the pile clamping hydraulic control one-way valve 121 can be closed tightly due to the high pressure of the large cavity of the pile clamping oil cylinder, hydraulic oil on the upper cavity of the pile clamping oil cylinder is prevented from leaking from the sealing gap of the valve core of the pile clamping linkage 1111, and the pressure maintaining effect of the output end of the pile clamping is effectively enhanced; when the pile is loosened, the position of the valve core of the pile clamping unit 1111 is changed through an external control source, so that the large cavity of the pile clamping oil cylinder returns oil and the small cavity of the pile clamping oil cylinder enters oil.
In this context, the small chamber refers to a rod chamber of the cylinder, and the large chamber refers to a rodless chamber of the cylinder.
The invention provides a hydraulic static pile driver, which comprises the hydraulic control system described in the specific embodiment; other parts of the hydrostatic pile press can be referred to in the prior art and are not expanded here.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The hydraulic static pile driver and the hydraulic control system thereof provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are provided only to help understand the concepts of the present invention and the core concepts thereof. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a hydraulic control system, its characterized in that, includes multiple unit valve main valve (1), presses valves (2), returns valves (3), main pressurized cylinder (501) and vice pressure cylinder (502) soon, press valves (2) integration soon set up in on the main pressurized cylinder (501), return valves (3) integration soon set up in on vice pressurized cylinder (502), multiple unit valve main valve (1) with press valves (2) soon to be connected, multiple unit valve main valve (1) with it connects to return valves (3) soon.
2. The hydraulic control system as claimed in claim 1, wherein the multi-way valve main valve (1) comprises a multi-way valve main body (11) and a main overflow valve two-stage control valve set (13), and the main overflow valve two-stage control valve set (13) is integrally arranged on the multi-way valve main body (11).
3. The hydraulic control system of claim 2, wherein the multiplex valve body (11) includes a first semi-integral valve (111) and a second semi-integral valve (112);
the first half integral valve (111) comprises a pile clamping unit (1111), a main pressing unit (1112), an oil inlet unit (1113), a longitudinal movement unit (1114), a longitudinal movement unit (1115), a support leg quadruple (1116) and a support leg triple (1117);
the second semi-integral valve (112) comprises a secondary pressure first joint (1121), a secondary pressure second joint (1122), an oil inlet second joint (1127), a transverse moving second joint (1123), a transverse moving first joint (1124), a support leg second joint (1125) and a support leg first joint (1126).
4. A hydraulic control system according to claim 3, characterized in that the multi-way valve main valve (1) further comprises a main return line (10) provided inside the multi-way valve body (11) and connected to a return tank;
the main overflow valve two-stage control valve group (13) comprises a first bypass cut-off control valve (131), a first damping hole (134), a second bypass cut-off control valve (132), a second damping hole (135), a secondary overflow valve (136) and a main overflow valve (133);
the first bypass cut-off control valve (131) is connected to a first external pilot oil source through an external control oil port X1, and the first external pilot oil source is connected to the external control oil port X1 and then acts on the first bypass cut-off control valve (131) through the first orifice (134);
the second bypass cut-off control valve (132) is connected to a second external pilot oil source through an external control port X2, and the second external pilot oil source is connected to the external control port X2 and then acts on the second bypass cut-off control valve (132) through the second orifice (135);
a control port of the main overflow valve (133) is sequentially connected in series with the first bypass cut-off control valve (131) and the second bypass cut-off control valve (132) through a control oil path (14) and then is communicated with the main oil return path (10);
an oil inlet of the secondary overflow valve (136) is communicated with a series pipeline between the first bypass cut-off control valve (131) and the second bypass cut-off control valve (132), and an oil outlet and a control oil port of the secondary overflow valve (136) are communicated with the main oil return path (10).
5. The hydraulic control system according to claim 4, further comprising an upper signal control circuit (7) connected to the first bypass cut-off control valve (131) and a lower signal control circuit (6) connected to the second bypass cut-off control valve (132);
the upper signal control circuit (7) is sequentially connected in series with the auxiliary pressure one-joint (1121), the auxiliary pressure two-joint (1122), the pile clamping joint (1111) and the main pressure joint (1112) and then communicated with the main oil return circuit (10);
the lower signal control circuit (6) is sequentially connected with the longitudinal movement duplex (1114), the longitudinal movement duplex (1115), the support leg quadruple (1116), the support leg triplex (1117), the support leg first duplex (1126), the support leg duplex (1125), the transverse movement duplex (1124) and the transverse movement duplex (1123) in series and then communicated with the main oil return circuit (10).
6. The hydraulic control system as claimed in claim 4, wherein the first oil inlet manifold (1113) and the second oil inlet manifold (1127) are communicated through a channel and then branch into a first lower parallel path (8) and a second lower parallel path (9), the first lower parallel path (8) is connected with the first longitudinal movement manifold (1114), the first longitudinal movement manifold (1115), the fourth leg manifold (1116) and the third leg manifold (1117) in parallel, the second lower parallel path (9) is connected with the second transverse movement manifold (1123), the first transverse movement manifold (1124), the second leg manifold (1125), the first leg manifold (1126) and an oil inlet of the main overflow valve (133) in parallel, and an oil return port of the main overflow valve (133) is communicated with the main oil return path (10);
the oil inlet connection I (1113) comprises a pump oil inlet P1, the oil inlet connection II (1127) comprises a pump oil inlet P2, the pump oil inlet P1 is connected with a forward oil inlet of the check valve II (18), the pump oil inlet P2 is connected with a forward oil inlet of the check valve I (17), a forward oil outlet of the check valve II (18) and a forward oil outlet of the check valve I (17) are communicated through a flow channel and then are branched into an upper parallel connection I (15) and an upper parallel connection II (16), the upper parallel connection I (15) is connected with the main pressure connection (1112) and the pile clamping connection (1111) in parallel, and the upper parallel connection II (16) is connected with the auxiliary pressure connection I (1121) and the auxiliary pressure connection II (1122) in parallel.
7. The hydraulic control system according to any one of claims 1 to 6, wherein the quick pressure valve set (2) comprises a quick pressure valve body (21) and a quick pressure switching valve (22), a flow passage is arranged inside the quick pressure valve body (21), the quick pressure switching valve (22) is arranged on the quick pressure valve body (21), a forward oil inlet of the quick pressure switching valve (22) is connected with a small cavity of the main pressure oil cylinder (501), a forward working oil port A22 of the quick pressure switching valve (22) is connected with a large cavity of the main pressure oil cylinder (501), a forward working oil port B22 of the quick pressure switching valve (22) is connected with the multi-way valve main valve (1), and a hydraulic control oil port of the quick pressure switching valve (22) is connected with an external control source.
8. The hydraulic control system according to any one of claims 1 to 6, wherein the quick return valve group (3) comprises a large-cavity hydraulic control one-way valve (301) and a small-cavity hydraulic control one-way valve (302), a forward oil outlet of the large-cavity hydraulic control one-way valve (301) is communicated with a large cavity of the auxiliary pressure oil cylinder (502), a hydraulic control oil port of the large-cavity hydraulic control one-way valve (301) is connected with an external control source, a forward oil inlet of the large-cavity hydraulic control one-way valve (301) is communicated with a forward oil inlet of the small-cavity hydraulic control one-way valve (302) and an external oil tank, and a forward oil outlet of the small-cavity hydraulic control one-way valve (302) is communicated with a small cavity of the auxiliary pressure oil cylinder (502).
9. The hydraulic control system according to any one of claims 1 to 6, further comprising an oil drain valve group (4), wherein the multi-way valve main valve (1) is connected with the fast pressure valve group (2) through the oil drain valve group (4), and the oil drain valve group (4) is connected with an external oil tank;
the oil discharge valve group (4) comprises a first hydraulic control one-way valve (401), a forward oil inlet of the first hydraulic control one-way valve (401) is connected with the external oil tank, a forward oil outlet of the first hydraulic control one-way valve (401) is connected with a large cavity of the main pressure oil cylinder (501), and a hydraulic control oil outlet of the first hydraulic control one-way valve (401) is connected with an external control source; and opening the first hydraulic control one-way valve (401) through the external control source to enable hydraulic oil in a large cavity of the main hydraulic oil cylinder (501) to reversely pass through the first hydraulic control one-way valve (401) and then return to the external oil tank when the pile is lifted.
10. A hydrostatic pile press comprising a hydraulic control system as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111602596.9A CN114109942A (en) | 2021-12-24 | 2021-12-24 | Hydraulic static pile press and hydraulic control system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111602596.9A CN114109942A (en) | 2021-12-24 | 2021-12-24 | Hydraulic static pile press and hydraulic control system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114109942A true CN114109942A (en) | 2022-03-01 |
Family
ID=80362991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111602596.9A Pending CN114109942A (en) | 2021-12-24 | 2021-12-24 | Hydraulic static pile press and hydraulic control system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114109942A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776651A (en) * | 2022-05-16 | 2022-07-22 | 江苏谷登桩工科技有限公司 | Rapid pile lifting and oil return regeneration system of static pile press and control method thereof |
-
2021
- 2021-12-24 CN CN202111602596.9A patent/CN114109942A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776651A (en) * | 2022-05-16 | 2022-07-22 | 江苏谷登桩工科技有限公司 | Rapid pile lifting and oil return regeneration system of static pile press and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101532518B (en) | Concrete pump truck pumping double-main oil cylinder automatic high-low pressure switching and equidirectional telescoping hydraulic device | |
| CN114109942A (en) | Hydraulic static pile press and hydraulic control system thereof | |
| CN109281874B (en) | Pilot hydraulic control main loop unloading system and pile press | |
| CN203248431U (en) | Unloading valve, hydraulic oil cylinder oil return backpressure unloading device and engineering machine | |
| CN107882798A (en) | Load simulation valve and loading machine variable system | |
| CN105275899B (en) | Hydraulic system of concrete pumping equipment and concrete pumping equipment | |
| CN216691646U (en) | Hydraulic static pile press and hydraulic control system thereof | |
| CN109306976B (en) | Load sensitive control system | |
| CN213682287U (en) | Steering hydraulic system and loader | |
| CN214247830U (en) | Manual-automatic integrated miniature hydraulic power system | |
| CN211550114U (en) | Pressurizing hydraulic system | |
| CN210889521U (en) | Integral multichannel conversion valve | |
| CN210949337U (en) | Automatic high-low pressure switching hydraulic system and equipment applying same | |
| CN103206423B (en) | A kind of hydraulic system and engineering machinery | |
| CN111503067A (en) | Acceleration pressurization system | |
| CN109162973A (en) | A kind of walking Platform Hydraulic System | |
| CN213954021U (en) | Single-row cartridge valve supercharger | |
| CN212924200U (en) | Novel crane hydraulic valve group | |
| CN213143188U (en) | Quick-change pipeline control system and excavator | |
| CN211898661U (en) | Multi-way control valve for hydraulic excavator | |
| CN203214465U (en) | Hydraulic system of pile pressing device | |
| CN216278728U (en) | High-performance accumulator pressure charging and releasing valve bank | |
| CN221374109U (en) | Integrated integral multi-way valve of compression garbage truck | |
| CN111501892A (en) | Multi-way control valve for hydraulic excavator | |
| CN104696303A (en) | Multifunctional hydraulic integrated valve block for static pile driver |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |