CN110656558B - Four-crawler intelligent slipform paver and upright post floating electrohydraulic control system thereof - Google Patents
Four-crawler intelligent slipform paver and upright post floating electrohydraulic control system thereof Download PDFInfo
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- CN110656558B CN110656558B CN201911118506.1A CN201911118506A CN110656558B CN 110656558 B CN110656558 B CN 110656558B CN 201911118506 A CN201911118506 A CN 201911118506A CN 110656558 B CN110656558 B CN 110656558B
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- 238000007667 floating Methods 0.000 title claims abstract description 96
- 239000003921 oil Substances 0.000 claims abstract description 266
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 36
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 5
- 239000000725 suspension Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/48—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
- E01C19/4886—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ for forming in a continuous operation kerbs, gutters, berms, safety kerbs, median barriers or like structures in situ, e.g. by slip-forming, by extrusion
- E01C19/4893—Apparatus designed for railless operation
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- 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
- F15B13/08—Assemblies of units, each for the control of a single servomotor only
- F15B13/0803—Modular units
- F15B13/0807—Manifolds
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- 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
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/044—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
- F15B2013/0448—Actuation by solenoid and permanent magnet
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- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20546—Type of pump variable capacity
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
- F15B2211/3157—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
- F15B2211/3157—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
- F15B2211/31588—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line having a single pressure source and multiple output members
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Road Paving Machines (AREA)
Abstract
Four-crawler intelligent slipform paver and upright post floating electrohydraulic control system thereof, relating to the technical field of pavement machinery. The hydraulic oil cylinder control device is used for controlling hydraulic oil cylinders in a left front upright post, a left rear upright post, a right front upright post and a right rear upright post of the four-track intelligent slipform paver and comprises a controller, a hydraulic oil source, an oil tank, a first electric control reversing valve, a second electric control reversing valve, a third electric control reversing valve, a fourth electric control reversing valve, a floating valve group, a fifth electromagnetic reversing valve, a two-position six-way reversing valve, a first double-balance valve, a second double-balance valve and a third double-balance valve. The upright posts of the built-in hydraulic oil cylinder are in a floating state, so that the problems of poor paving flatness caused by deformation of the frame and reduced structure direction precision caused by unstable walking caused by suspension of a certain upright post track assembly in the background art are effectively solved, and the structure precision of the four-track intelligent slipform paver in side-mounted mold mode construction is ensured.
Description
Technical Field
The invention relates to the technical field of pavement machinery, in particular to a four-crawler intelligent cement concrete slipform paver.
Background
Four-track intelligent cement concrete slipform pavers (hereinafter referred to as slipform pavers) adopt four-track drive to walk, a stand is installed on each track assembly, the stand comprises inner guide pipes and outer guide pipes, a main frame of the paver is rigidly connected between the outer guide pipes, a hydraulic cylinder is arranged in each inner guide pipe, one end (usually a piston rod end) of the hydraulic cylinder is connected with the track assembly through a U-shaped yoke (not shown) below the inner guide pipe, the other end of the hydraulic cylinder is connected with the top end of the outer guide pipe and used for adjusting the height and gradient of the main frame, and the main frame is further provided with a power system, a working mechanism and other structures.
When the slipform paver is configured with a central die for paving a road surface, the evenness of the road surface (comprising longitudinal slopes and transverse slopes) is automatically controlled by four longitudinal slope sensors (each longitudinal slope sensor is respectively arranged near one upright post) and is controlled and executed by a hydraulic cylinder in the corresponding upright post.
When a side-mounted die (the die is arranged on one side of the main frame) mode is configured, the side-mounted die is used for paving concrete structures such as a curb, a ditch and a protective wall, the flatness of the structures is automatically controlled by adopting two longitudinal slope sensors and a transverse slope sensor, the two longitudinal slope sensors are arranged at the front position and the rear position close to one side of the die and are respectively used for controlling hydraulic cylinders in the front upright post and the rear upright post of the side, and the transverse slope sensor is arranged on a cross beam of the machine frame close to the die and is used for controlling the hydraulic cylinders in the upright posts of the transverse slope sensor at the other side. The general two longitudinal slope sensors and one transverse slope sensor are combined to control the hydraulic cylinders in the three upright posts only, the hydraulic cylinders in the fourth upright post are not automatically controlled by the sensors, when the automatic paving is carried out, the height of the upright post cannot be automatically adjusted in a lifting manner, and when a connected track assembly meets a roadbed bulge or a pit, the deformation of a main frame of the slipform paver is caused, so that the flatness of a structure is influenced. Moreover, if the upright post track assembly is suspended when encountering pits, or if the upright post is lifted when encountering protrusions, other upright post track assemblies are suspended, which can influence the walking stability of the slipform paver, thereby reducing the direction accuracy of the structure.
Disclosure of Invention
One of the purposes of the invention is to provide a stand column floating electrohydraulic control system for a four-crawler intelligent slipform paver, which can effectively solve the problems in the background technology.
The technical scheme for achieving the purpose is as follows: the upright post floating electrohydraulic control system is used for controlling hydraulic cylinders in a left front upright post, a left rear upright post, a right front upright post and a right rear upright post of the four-track intelligent slipform paver, one side of the four-track intelligent slipform paver is provided with a die mechanism, one side of the die mechanism is connected with a front side longitudinal slope sensor and a rear side longitudinal slope sensor, and the rear side of the four-track intelligent slipform paver is provided with a transverse slope sensor;
The method is characterized in that: the electrohydraulic control system comprises a controller, a hydraulic oil source, an oil tank, a first electric control reversing valve, a second electric control reversing valve, a third electric control reversing valve, a fourth electric control reversing valve, a floating valve group, a fifth electromagnetic reversing valve, a two-position six-way reversing valve, a first double-balance valve, a second double-balance valve and a third double-balance valve;
The pressure oil ports P of the first electric control reversing valve, the second electric control reversing valve, the third electric control reversing valve and the fourth electric control reversing valve are connected in parallel and connected with a hydraulic oil source, the oil return port T and connected in parallel and connected with an oil tank, and the working oil port A, B of the first electric control reversing valve is connected with a hydraulic oil cylinder in the left rear upright post through a first double balance valve; the working oil port A, B of the second electric control reversing valve is connected with a hydraulic cylinder in the right rear upright post through a second double-balance valve; the working oil port A, B of the third electric control reversing valve is connected with the oil inlet A, B of the two-position six-way reversing valve through a third double-balance valve, and the oil outlets A1 and B1 of the two-position six-way reversing valve are connected with the hydraulic cylinder in the right front upright post; the working oil port A, B of the fourth electric control reversing valve is connected with the hydraulic oil cylinder in the left front upright post and the oil inlets C1 and C2 of the two-position six-way reversing valve through a floating valve group;
the floating valve group is provided with oil outlets C1, C2, C3, C4, oil inlets V1 and V2, a pressure oil port P and an oil return port T, the pressure oil port P on the floating valve group is connected with a hydraulic oil source, the port T is connected with an oil tank, the oil inlets V1 and V2 are connected with a working oil port A, B of a fourth electric control reversing valve, the oil outlets C1 and C2 are connected with the oil inlets C1 and C2 of a two-position six-way reversing valve, and the oil outlets C3 and C4 are connected with a hydraulic cylinder in a left front upright post;
The pressure oil port P of the first electromagnetic reversing valve is connected with the pressure oil port P of the floating valve group after being connected with the adjustable pressure reducing valve and the one-way valve in series in sequence, the pressure release port L of the adjustable pressure reducing valve is connected with the oil return port T of the floating valve group after being connected with the first hydraulic control one-way valve in series, and the working oil port A of the first electromagnetic reversing valve is connected with the oil outlet C4 of the floating valve group and the working oil port B is connected with the oil outlet C2 of the floating valve group; the pressure oil port P of the second electromagnetic directional valve is connected with the pressure oil port P of the first electromagnetic directional valve, the working oil port A of the second electromagnetic directional valve is connected with the oil outlet C3 of the floating valve group, and the working oil port B is connected with the oil outlet C1 of the floating valve group; the hydraulic control port K of the second hydraulic control one-way valve is connected with the hydraulic control port K of the first hydraulic control one-way valve in parallel and is connected with the pressure oil port P of the floating valve group, the working oil port A of the third electromagnetic directional valve is connected with the oil outlet C2 of the floating valve group, and the working oil port B is connected with the oil outlet C4; the pressure oil port P of the fourth electromagnetic directional valve is connected with the oil inlet V1 of the floating valve bank after being connected with the single balance valve in series, the control port K of the single balance valve is connected with the oil inlet V2 of the floating valve bank, the working oil port A of the fourth electromagnetic directional valve is connected with the oil outlet C1 of the floating valve bank, and the working oil port B is connected with the oil outlet C3 of the floating valve bank;
The transverse slope sensor, the front side longitudinal slope sensor and the rear side longitudinal slope sensor are respectively connected with the input end of the controller, and the control ends of the first electric control reversing valve, the second electric control reversing valve, the third electric control reversing valve and the fourth electric control reversing valve are respectively connected with the output end of the controller.
Further, the first, second, third and fourth electrically controlled reversing valves are electromagnetic proportional reversing valves or electrohydraulic servo valves.
Further, the hydraulic oil source adopts a constant displacement pump or a variable displacement pump for oil supply.
Further, the upright floating electrohydraulic control system further comprises a fifth electromagnetic directional valve, the two-position six-way directional valve is a hydraulic directional valve, a control oil port P of the hydraulic directional valve is connected with a working oil port A of the fifth electromagnetic directional valve, a pressure oil port P of the fifth electromagnetic directional valve is connected with a hydraulic oil source, an oil return port is connected with an oil tank, and a control end of the fifth electromagnetic directional valve is connected with a controller.
Further, the two-position six-way reversing valve adopts a manual or electric reversing valve, and when the electric reversing valve is adopted, the control end of the electric reversing valve is connected with the controller.
The invention further aims to provide a four-track intelligent slipform paver, which comprises a host machine and a stand column floating electrohydraulic control system, wherein the host machine comprises four pairs of track assemblies which are arranged front and back, a left front stand column is arranged on the left front track assembly, a left rear stand column is arranged on the left rear track assembly, a right front stand column is arranged on the right front track assembly, a right rear stand column is arranged on the right rear track assembly, a frame is connected between the left front stand column, the left rear stand column, the right front stand column and the right rear stand column, a power mechanism, a die mechanism and a feeding device for feeding the die mechanism are arranged on the frame, the die mechanism is fixedly arranged on one side of the frame, a transverse slope sensor is arranged at the rear end of the frame, and a front side longitudinal slope sensor and a rear side longitudinal slope sensor are connected on one side where the die mechanism is arranged;
The structure of the left front upright post, the left rear upright post, the right front upright post and the right rear upright post is the same, the hydraulic lifting device comprises an inner guide pipe, an outer guide pipe is sleeved outside the inner guide pipe, the frame is connected with the outer guide pipe, and a hydraulic cylinder for driving the outer guide pipe to lift is arranged in the inner guide pipe;
The upright post floating electrohydraulic control system comprises a controller, a hydraulic oil source, an oil tank, a first electric control reversing valve, a second electric control reversing valve, a third electric control reversing valve, a fourth electric control reversing valve, a floating valve bank, a fifth electromagnetic reversing valve, a two-position six-way reversing valve, a first double-balance valve, a second double-balance valve and a third double-balance valve;
The pressure oil ports P of the first electric control reversing valve, the second electric control reversing valve, the third electric control reversing valve and the fourth electric control reversing valve are connected in parallel and connected with a hydraulic oil source, the oil return port T and connected in parallel and connected with an oil tank, and the working oil port A, B of the first electric control reversing valve is connected with a hydraulic oil cylinder in the left rear upright post through a first double balance valve; the working oil port A, B of the second electric control reversing valve is connected with a hydraulic cylinder in the right rear upright post through a second double-balance valve; the working oil port A, B of the third electric control reversing valve is connected with the oil inlet A, B of the two-position six-way reversing valve through a third double-balance valve, and the oil outlets A1 and B1 of the two-position six-way reversing valve are connected with the hydraulic cylinder in the right front upright post; the working oil port A, B of the fourth electric control reversing valve is connected with the hydraulic oil cylinder in the left front upright post and the oil inlets C1 and C2 of the two-position six-way reversing valve through a floating valve group;
the floating valve group is provided with oil outlets C1, C2, C3, C4, oil inlets V1 and V2, a pressure oil port P and an oil return port T, the pressure oil port P on the floating valve group is connected with a hydraulic oil source, the port T is connected with an oil tank, the oil inlets V1 and V2 are connected with a working oil port A, B of a fourth electric control reversing valve, the oil outlets C1 and C2 are connected with the oil inlets C1 and C2 of a two-position six-way reversing valve, and the oil outlets C3 and C4 are connected with a hydraulic cylinder in a left front upright post;
The pressure oil port P of the first electromagnetic reversing valve is connected with the pressure oil port P of the floating valve group after being connected with the adjustable pressure reducing valve and the one-way valve in series in sequence, the pressure release port L of the adjustable pressure reducing valve is connected with the oil return port T of the floating valve group after being connected with the first hydraulic control one-way valve in series, and the working oil port A of the first electromagnetic reversing valve is connected with the oil outlet C4 of the floating valve group and the working oil port B is connected with the oil outlet C2 of the floating valve group; the pressure oil port P of the second electromagnetic directional valve is connected with the pressure oil port P of the first electromagnetic directional valve, the working oil port A of the second electromagnetic directional valve is connected with the oil outlet C3 of the floating valve group, and the working oil port B is connected with the oil outlet C1 of the floating valve group; the hydraulic control port K of the second hydraulic control one-way valve is connected with the hydraulic control port K of the first hydraulic control one-way valve in parallel and is connected with the pressure oil port P of the floating valve group, the working oil port A of the third electromagnetic directional valve is connected with the oil outlet C2 of the floating valve group, and the working oil port B is connected with the oil outlet C4; the pressure oil port P of the fourth electromagnetic directional valve is connected with the oil inlet V1 of the floating valve bank after being connected with the single balance valve in series, the control port K of the single balance valve is connected with the oil inlet V2 of the floating valve bank, the working oil port A of the fourth electromagnetic directional valve is connected with the oil outlet C1 of the floating valve bank, and the working oil port B is connected with the oil outlet C3 of the floating valve bank;
the control ends of the first electric control reversing valve, the second electric control reversing valve, the third electric control reversing valve and the fourth electric control reversing valve are respectively connected with the output end of the controller;
The first, second, third and fourth electrically controlled reversing valves are electromagnetic proportional reversing valves or electrohydraulic servo valves;
The hydraulic oil source adopts a constant displacement pump or a variable displacement pump for oil supply;
The upright post floating electrohydraulic control system further comprises a fifth electromagnetic directional valve, the two-position six-way directional valve adopts a hydraulic directional valve, a control oil port P of the hydraulic directional valve is connected with a working oil port A of the fifth electromagnetic directional valve, a pressure oil port P of the fifth electromagnetic directional valve is connected with a hydraulic oil source, an oil return port is connected with an oil tank, and a control end of the fifth electromagnetic directional valve is connected with a controller;
The two-position six-way reversing valve adopts a manual or electric reversing valve, and when the electric reversing valve is adopted, the control end of the electric reversing valve is connected with the controller.
The invention has the beneficial effects that:
The four-crawler intelligent slipform paver disclosed by the invention is provided with the upright post floating electrohydraulic control system, so that the upright posts of the built-in hydraulic oil cylinder are in a floating state, the problems of poor paving flatness caused by frame deformation and reduced structure direction precision caused by unstable walking caused by suspension of a certain upright post crawler assembly in the prior art are effectively solved, and the structure precision during side-mounted die mode construction of the four-crawler intelligent slipform paver is ensured.
The invention can change the oil source pressure of the upper cavity and the lower cavity (the rodless cavity and the rod cavity) of the hydraulic oil cylinder through the adjustable pressure reducing valve.
The invention is provided with the first double-balance valve, the second double-balance valve and the third double-balance valve, and can lock the four upright posts not to descend by themselves in a non-working state; the hydraulic cylinders in the left front upright post, the left rear upright post, the right front upright post and the right rear upright post can play a role in buffering under the electric control lifting state.
Drawings
FIG. 1 is a schematic diagram of an electro-hydraulic control system;
FIG. 2 is a schematic diagram of a four-track intelligent slipform paver with a die mechanism disposed on the left side;
FIG. 3 is a schematic diagram of a four-track intelligent slipform paver with a die mechanism disposed on the right;
Fig. 4 is a schematic view of a column structure.
Detailed Description
As shown in fig. 1-4, the invention discloses a four-track intelligent slipform paver, the structure of which is the same as that of the prior art, comprising a main machine 1, wherein the main machine 1 comprises four pairs of track assemblies 3 which are arranged front and back, a right rear upright 4 is arranged on the track assembly 3 on the right rear side, a right front upright 5 is arranged on the track assembly 3 on the right front side, a left front upright 6 is arranged on the track assembly 3 on the left front side, a left rear upright 7 is arranged on the track assembly 3 on the left rear side, a frame 8 is connected among the right rear upright 4, the right front upright 5, the left front upright 6 and the left rear upright 7, a power mechanism 9, a die mechanism 2 and a feeding device 10 for feeding the die mechanism 2 are arranged on the frame 8, the die mechanism 2 is fixedly arranged on one side of the frame 8, a transverse slope sensor 11 is arranged at the rear end of the frame 8, and one side on which the die mechanism 2 is arranged is connected with a front side longitudinal slope sensor 12 and a rear longitudinal slope sensor 13.
The right rear upright 4, the right front upright 5, the left front upright 6 and the left rear upright 7 have the same structure and comprise an inner guide pipe 38 connected to the crawler assembly 3, an outer guide pipe 39 is sleeved outside the inner guide pipe 38, and the frame 8 is connected with the outer guide pipe 39; a right rear column hydraulic cylinder 41 for driving the outer conduit 39 to lift is installed in the inner conduit 38 of the right rear column 4, a right front column hydraulic cylinder 42 for driving the outer conduit 39 to lift is installed in the inner conduit 38 of the right front column 5, a left front column hydraulic cylinder 43 for driving the outer conduit 39 to lift is installed in the inner conduit 38 of the left front column 6, and a left rear column hydraulic cylinder 40 for driving the outer conduit 39 to lift is installed in the inner conduit 38 of the left rear column 7.
The invention mainly provides an upright post floating electrohydraulic control system for a four-track intelligent slipform paver, which comprises a controller 14, a hydraulic oil source 15, an oil tank 16, an electric control reversing valve group 27, a floating valve group 21, a fifth electromagnetic reversing valve 22, a hydraulic reversing valve 23, a first double-balance valve 24, a second double-balance valve 25 and a third double-balance valve 26, wherein the controller 14 can be a single-chip microcomputer or a universal controller such as a DANFOSS MC series controller.
The electric control reversing valve group 27 comprises a first electric control reversing valve 17, a second electric control reversing valve 18, a third electric control reversing valve 19, a fourth electric control reversing valve 20 and a valve block 28, wherein oil outlets A1 and B1 which are respectively and correspondingly connected with a working oil port A, B of the first electric control reversing valve 17, oil outlets A2 and B2 which are respectively and correspondingly connected with a working oil port A, B of the second electric control reversing valve 18, oil outlets A3 and B3 which are respectively and correspondingly connected with a working oil port A, B of the third electric control reversing valve 19, oil outlets A4 and B4 which are respectively and correspondingly connected with a working oil port A, B of the fourth electric control reversing valve 20, and pressure oil ports P and oil return ports T1 which are respectively and correspondingly connected with the first electric control reversing valve 17, the second electric control reversing valve 18, the third electric control reversing valve 19 and the fourth electric control reversing valve 20 are arranged on the valve block 28, and the pressure oil port P1 and the oil return port T1 on the valve block 28 are respectively connected with a hydraulic oil source 15 and the oil tank 16.
The floating valve group 21 is provided with oil outlets C1, C2, C3, C4, oil inlets V1 and V2, a pressure oil port P and an oil return port T, the pressure oil port P on the floating valve group 21 is connected with a hydraulic oil source 15, the oil return port T is connected with an oil tank 16, a first electromagnetic directional valve 29, a second electromagnetic directional valve 30, a third electromagnetic directional valve 31, a fourth electromagnetic directional valve 32, an adjustable pressure reducing valve 33, a one-way valve 34, a first hydraulic control one-way valve 35, a second hydraulic control one-way valve 36 and a single balance valve 37 are arranged in the floating valve group 21, the pressure oil port P of the first electromagnetic directional valve 29 is connected with the oil outlet C1 of the adjustable pressure reducing valve 33, the oil inlet V1 of the adjustable pressure reducing valve 33 is connected with the oil outlet B of the one-way valve 34, the oil inlet A of the one-way valve 34 is connected with the pressure oil port P of the floating valve group 21, the oil outlet L of the adjustable pressure reducing valve 33 is connected with the oil outlet B of the first hydraulic control one-way valve 35, the oil inlet A of the first hydraulic control one-way valve 35 is connected with the oil return port T of the floating valve group 21, and the working oil port A of the first electromagnetic directional valve 29 is connected with the working oil port C4 of the floating valve 21; the pressure oil port P of the second electromagnetic directional valve 30 is connected with the pressure oil port P of the first electromagnetic directional valve 29, the working oil port A of the second electromagnetic directional valve 30 is connected with the oil outlet C3 of the floating valve block 21, the working oil port B is connected with the oil outlet C1 of the floating valve block 21, the pressure oil port P of the third electromagnetic directional valve 31 is connected with the oil outlet B of the second hydraulic control one-way valve 36, the oil inlet A of the second hydraulic control one-way valve 36 is connected with the oil inlet V2 of the floating valve block 21, and the hydraulic control port K of the second hydraulic control one-way valve 36 is connected with the hydraulic control port K of the first hydraulic control one-way valve 35 in parallel and connected with the pressure oil port P of the floating valve block 21; the working oil port A of the third electromagnetic directional valve 31 is connected with the oil outlet C2 of the floating valve group 21, the working oil port B is connected with the oil outlet C4 of the floating valve group 21, the pressure oil port P of the fourth electromagnetic directional valve 32 is connected with the oil outlet C1 of the single balance valve 37, the oil inlet V1 of the single balance valve 37 is connected with the oil inlet V1 of the floating valve group 21, and the control port K of the single balance valve 37 is connected with the oil inlet V2 of the floating valve group 21; the working oil port A of the fourth electromagnetic directional valve 32 is connected with the oil outlet C1 of the floating valve group 21, and the working oil port B is connected with the oil outlet C3 of the floating valve group 21.
The oil outlet A1 of the valve block 28 is connected with the oil inlet V1 of the first double-balance valve 24, the oil outlet B1 is connected with the oil inlet V2 of the first double-balance valve 24, the oil outlet C1 of the first double-balance valve 24 is connected with the rodless cavity of the left rear pillar hydraulic cylinder 40, and the oil outlet C2 is connected with the rod cavity of the left rear pillar hydraulic cylinder 40; the oil outlet A2 of the valve block 28 is connected with the oil inlet V1 of the second double-balance valve 25, the oil outlet B2 is connected with the oil inlet V2 of the second double-balance valve 25, the oil outlet C1 of the second double-balance valve 25 is connected with the rodless cavity of the right rear upright hydraulic cylinder 41, and the oil outlet C2 is connected with the rod cavity of the right rear upright hydraulic cylinder 41; the oil outlet A3 of the valve block 28 is connected with the oil inlet V2 and the oil outlet B3 of the third double-balance valve 26 and is connected with the oil inlet V1 of the third double-balance valve 26, the oil outlet C1 of the third double-balance valve 26 is connected with the oil inlet B of the hydraulic reversing valve 23, the oil outlet C2 of the hydraulic reversing valve 23 is connected with the oil inlet A of the hydraulic reversing valve 23, the oil outlet B1 of the hydraulic reversing valve 23 is connected with the rodless cavity of the right front upright hydraulic cylinder 42, the oil outlet A1 is connected with the rod cavity of the right front upright hydraulic cylinder 42, the control oil port P of the hydraulic reversing valve 23 is connected with the working oil port A of the fifth electromagnetic reversing valve 22, the pressure oil port P of the fifth electromagnetic reversing valve 22 is connected with the hydraulic oil source 15, and the oil return port T is connected with the oil tank 16; the oil outlet A4 of the valve block 28 is connected with the oil inlet V2 of the floating valve bank 21, the oil outlet B4 is connected with the oil inlet V1 of the floating valve bank 21, the oil outlet C1 of the floating valve bank 21 is connected with the oil inlet C1 of the hydraulic reversing valve, the oil outlet C2 is connected with the oil inlet C2 of the hydraulic reversing valve 23, the oil outlet C3 is connected with the rodless cavity of the left front upright post hydraulic cylinder 43, and the oil outlet C4 is connected with the rod cavity of the left front upright post hydraulic cylinder 43.
The lateral slope sensor 11, the front side longitudinal slope sensor 12 and the rear side longitudinal slope sensor 13 are respectively connected with the input end of the controller 14, and the control ends of the first electric control reversing valve 17, the second electric control reversing valve 18, the third electric control reversing valve 19, the fourth electric control reversing valve 20 and the fifth electromagnetic reversing valve 22 are respectively connected with the output end of the controller.
As a further explanation of the present embodiment, the hydraulic oil source 15 in the present embodiment may be supplied with oil by a fixed displacement pump or a variable displacement pump; the first, second, third and fourth electrically controlled reversing valves 17, 18, 19, 20 may be electromagnetic proportional reversing valves or electrohydraulic servo valves.
As a further explanation of the present embodiment, the die mechanism 2 may be disposed on the left side or the right side of the paver during the construction, and when the die mechanism 2 is disposed on the left side, the front side slope sensor 12 and the rear side slope sensor 13 are also disposed correspondingly on the left side, and when the die mechanism 2 is disposed on the right side, the front side slope sensor 12 and the rear side slope sensor 13 are also disposed correspondingly on the right side.
The working principle of the invention is as follows:
When the die mechanism 2 is configured on the left side of the paver for construction, when the controller 14 receives a road surface unevenness change signal sent by the rear side longitudinal slope sensor 13, the first electric control reversing valve 17 is controlled to act, so that the left rear upright post hydraulic cylinder 40 automatically controls the lifting action of the left rear upright post 7.
When the controller 14 receives the road surface unevenness change signal sent by the front side longitudinal slope sensor 13, the controller 14 controls the third electromagnetic directional valve 31, the fourth electromagnetic directional valve 32 and the fourth electric control directional valve 20 to act, and hydraulic oil controls the left front upright post hydraulic cylinder 43 to act through the fourth electric control directional valve 20 and the single balance valve 37 of the floating valve group 21, the second hydraulic control one-way valve 36, the third electromagnetic directional valve 31 and the fourth electromagnetic directional valve 32, so that the automatic lifting action of the left front upright post 6 is realized.
When the controller 14 receives the road surface unevenness change signal sent by the lateral slope sensor 11, the second electric control reversing valve 18 is controlled to act, so that the lifting action of the right rear pillar 4 is automatically controlled by the right rear pillar hydraulic cylinder 41.
When the right rear upright post 4 is lifted, the right front upright post 5 is floated up and down along with the height of the right rear upright post 4 through the floating valve group 21, and the concrete principle is as follows: when the controller 14 receives the road surface unevenness change signal sent by the lateral slope sensor 11, the controller 14 simultaneously controls the coils of the first electromagnetic directional valve 29, the second electromagnetic directional valve 30, the third electromagnetic directional valve 31, the fourth electromagnetic directional valve 32 and the fifth electromagnetic directional valve 22 of the floating valve group 21 to be electrified, the pressure oil of the hydraulic oil source 15 acts on the control oil port P of the hydraulic directional valve 20 through the fifth electromagnetic directional valve 22, so that the oil inlets C2 and C1 of the hydraulic directional valve 23 are respectively communicated with the oil outlets A1 and B1, the pressure oil of the hydraulic oil source 15 flows through the adjustable pressure reducing valve 33 to be respectively flows through the first electromagnetic directional valve 29 and the second electromagnetic directional valve 30 to reach the oil outlets C2 and C1 of the floating valve group 21 in two ways, and then the oil inlets C2, C1, the oil outlets A1 and B1 of the hydraulic directional valve 23 act on the rod cavity and the rodless cavity of the right front upright hydraulic cylinder 42, and the right front upright hydraulic cylinder 42 is in a floating state by adjusting the pressure of the adjustable pressure reducing valve 33.
When the die mechanism 2 is configured on the right side of the paver and is under construction, when the controller 14 receives a road surface unevenness change signal sent by the rear side longitudinal slope sensor 13, the second electric control reversing valve 18 is controlled to act, so that the lifting action of the right rear upright post 4 is automatically controlled by the right rear upright post hydraulic cylinder 41.
When the controller 14 receives the road surface unevenness change signal sent by the front side longitudinal slope sensor 13, the controller 14 controls the action of the right front upright post hydraulic cylinder 42 through the third electric control reversing valve 19 to realize the lifting action of the right front upright post 5.
When the controller 14 receives the road surface unevenness change signal sent by the lateral slope sensor 11, the first electric control reversing valve 17 is controlled to act, so that the left rear pillar hydraulic cylinder 40 automatically controls the lifting action of the left rear pillar 7.
The left front upright post 6 is floated up and down by following the height of the left rear upright post 7 through a floating valve group 7. Floating principle: when the controller 14 receives the road surface unevenness change signal sent by the lateral slope sensor 11, the controller 14 simultaneously controls the coils of the first electromagnetic directional valve 29, the second electromagnetic directional valve 30, the third electromagnetic directional valve 31, the fourth electromagnetic directional valve 32 and the fifth electromagnetic directional valve 22 of the floating valve group 21 to lose electricity, and the pressure oil of the hydraulic oil source 15 flows through the adjustable pressure reducing valve 33 to flow through the first electromagnetic directional valve 29 and the second electromagnetic directional valve 30 respectively to the oil inlets C4 and C3 of the floating valve group 7 in two ways, so that the rod cavity and the rodless cavity of the left front pillar hydraulic cylinder 43 are respectively acted, and the left front pillar hydraulic cylinder 43 is in a floating state by adjusting the pressure of the adjustable pressure reducing valve 33.
Examples
The second embodiment is substantially the same as the first embodiment except that the hydraulic directional valve 23 is replaced by a manual or electric directional valve, and the fifth electromagnetic directional valve 22 in the first embodiment is omitted, and when an electric directional valve is used, the control end of the electric directional valve 22 is connected to the output end of the controller 14.
Claims (2)
1. The upright post floating electrohydraulic control system is used for controlling hydraulic cylinders in a left front upright post, a left rear upright post, a right front upright post and a right rear upright post of the four-track intelligent slipform paver, one side of the four-track intelligent slipform paver is provided with a die mechanism, one side of the die mechanism is connected with a front side longitudinal slope sensor and a rear side longitudinal slope sensor, and the rear side of the four-track intelligent slipform paver is provided with a transverse slope sensor;
The method is characterized in that: the electrohydraulic control system comprises a controller, a hydraulic oil source, an oil tank, a first electric control reversing valve, a second electric control reversing valve, a third electric control reversing valve, a fourth electric control reversing valve, a floating valve group, a fifth electromagnetic reversing valve, a two-position six-way reversing valve, a first double-balance valve, a second double-balance valve and a third double-balance valve;
The pressure oil ports P of the first electric control reversing valve, the second electric control reversing valve, the third electric control reversing valve and the fourth electric control reversing valve are connected in parallel and connected with a hydraulic oil source, the oil return port T and connected in parallel and connected with an oil tank, and the working oil port A, B of the first electric control reversing valve is connected with a hydraulic oil cylinder in the left rear upright post through a first double balance valve; the working oil port A, B of the second electric control reversing valve is connected with a hydraulic cylinder in the right rear upright post through a second double-balance valve; the working oil port A, B of the third electric control reversing valve is connected with the oil inlet A, B of the two-position six-way reversing valve through a third double-balance valve, and the oil outlets A1 and B1 of the two-position six-way reversing valve are connected with the hydraulic cylinder in the right front upright post; the working oil port A, B of the fourth electric control reversing valve is connected with the hydraulic oil cylinder in the left front upright post and the oil inlets C1 and C2 of the two-position six-way reversing valve through a floating valve group;
the floating valve group is provided with oil outlets C1, C2, C3, C4, oil inlets V1 and V2, a pressure oil port P and an oil return port T, the pressure oil port P on the floating valve group is connected with a hydraulic oil source, the port T is connected with an oil tank, the oil inlets V1 and V2 are connected with a working oil port A, B of a fourth electric control reversing valve, the oil outlets C1 and C2 are connected with the oil inlets C1 and C2 of a two-position six-way reversing valve, and the oil outlets C3 and C4 are connected with a hydraulic cylinder in a left front upright post;
The pressure oil port P of the first electromagnetic reversing valve is connected with the pressure oil port P of the floating valve group after being connected with the adjustable pressure reducing valve and the one-way valve in series in sequence, the pressure release port L of the adjustable pressure reducing valve is connected with the oil return port T of the floating valve group after being connected with the first hydraulic control one-way valve in series, and the working oil port A of the first electromagnetic reversing valve is connected with the oil outlet C4 of the floating valve group and the working oil port B is connected with the oil outlet C2 of the floating valve group; the pressure oil port P of the second electromagnetic directional valve is connected with the pressure oil port P of the first electromagnetic directional valve, the working oil port A of the second electromagnetic directional valve is connected with the oil outlet C3 of the floating valve group, and the working oil port B is connected with the oil outlet C1 of the floating valve group; the hydraulic control port K of the second hydraulic control one-way valve is connected with the hydraulic control port K of the first hydraulic control one-way valve in parallel and is connected with the pressure oil port P of the floating valve group, the working oil port A of the third electromagnetic directional valve is connected with the oil outlet C2 of the floating valve group, and the working oil port B is connected with the oil outlet C4; the pressure oil port P of the fourth electromagnetic directional valve is connected with the oil inlet V1 of the floating valve bank after being connected with the single balance valve in series, the control port K of the single balance valve is connected with the oil inlet V2 of the floating valve bank, the working oil port A of the fourth electromagnetic directional valve is connected with the oil outlet C1 of the floating valve bank, and the working oil port B is connected with the oil outlet C3 of the floating valve bank;
the control ends of the first electric control reversing valve, the second electric control reversing valve, the third electric control reversing valve and the fourth electric control reversing valve are respectively connected with the output end of the controller;
The first, second, third and fourth electrically controlled reversing valves are electromagnetic proportional reversing valves or electrohydraulic servo valves;
The hydraulic oil source adopts a constant displacement pump or a variable displacement pump for oil supply;
The upright post floating electrohydraulic control system further comprises a fifth electromagnetic directional valve, the two-position six-way directional valve adopts a hydraulic directional valve, a control oil port P of the hydraulic directional valve is connected with a working oil port A of the fifth electromagnetic directional valve, a pressure oil port P of the fifth electromagnetic directional valve is connected with a hydraulic oil source, an oil return port is connected with an oil tank, and a control end of the fifth electromagnetic directional valve is connected with a controller;
The two-position six-way reversing valve adopts a manual or electric reversing valve, and when the electric reversing valve is adopted, the control end of the electric reversing valve is connected with the controller.
2. The utility model provides a four track intelligence slipform pavers, including host computer and stand floating electrohydraulic control system, the host computer includes four is two pairs of track assemblies that arrange in front and back, install left front column on the track assembly of left front side, install left rear column on the track assembly of left rear side, install right front column on the track assembly of right front side, install right rear column on the track assembly of right rear side, be connected with the frame between left front column, left rear column, right front column, right rear column, install power unit on the frame, mould mechanism and supply device to mould mechanism feed, mould mechanism fixed mounting is in one side of frame, the transverse slope sensor is installed to the frame rear end, one side of installing mould mechanism is connected with front side longitudinal slope sensor and rear side longitudinal slope sensor;
The structure of the left front upright post, the left rear upright post, the right front upright post and the right rear upright post is the same, the hydraulic lifting device comprises an inner guide pipe, an outer guide pipe is sleeved outside the inner guide pipe, the frame is connected with the outer guide pipe, and a hydraulic cylinder for driving the outer guide pipe to lift is arranged in the inner guide pipe;
The method is characterized in that: the upright post floating electrohydraulic control system adopts the four-crawler intelligent slipform paver as set forth in claim 1.
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