CN114855572B - Milling machine with milling self-adaptive adjustment hydraulic system - Google Patents
Milling machine with milling self-adaptive adjustment hydraulic system Download PDFInfo
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- CN114855572B CN114855572B CN202210359262.1A CN202210359262A CN114855572B CN 114855572 B CN114855572 B CN 114855572B CN 202210359262 A CN202210359262 A CN 202210359262A CN 114855572 B CN114855572 B CN 114855572B
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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
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/08—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades
- E01C23/085—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades using power-driven tools, e.g. vibratory tools
- E01C23/088—Rotary tools, e.g. milling drums
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
- F16F15/0232—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means with at least one gas spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/12—Fluid damping
- F16F2222/126—Fluid damping using gases
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Aviation & Aerospace Engineering (AREA)
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Abstract
The invention relates to the field of milling machines, in particular to a milling machine with a milling self-adaptive adjusting hydraulic system, which comprises a frame provided with a main oil pump and an auxiliary oil pump, wherein reversing valves are arranged at the outlet positions of the main oil pump and the auxiliary oil pump, a milling roller assembly is rotated on the surface of a shaft column, two groups of main hydraulic cylinders and auxiliary hydraulic cylinders are symmetrically arranged between the milling roller assembly and the frame, two ends of each main hydraulic cylinder and each auxiliary hydraulic cylinder are respectively and rotationally connected with the milling roller assembly and the frame, and an oil inlet and an oil outlet of each main hydraulic cylinder and each auxiliary hydraulic cylinder are respectively connected with the outlet of the main oil pump and the outlet of the auxiliary oil pump and the reversing valve.
Description
Technical Field
The invention relates to the field of milling machines, in particular to a milling machine with a milling self-adaptive adjustment hydraulic system.
Background
The pavement milling machine is one of the main types of asphalt pavement maintenance construction machinery, is one of the main equipment of asphalt concrete pavement maintenance construction, is mainly used for excavating and renewing asphalt concrete surface layers of roads, town roads, airports, goods yards and the like, can be used for eliminating defects of pavement advocacy, oil waves, reticulation, rutting and the like, and can also be used for excavating pavement pits and grooves, and roughening of cement pavement and milling of surface fault tables.
The milling machine mainly depends on controlling the rotation of the milling rotor to realize the construction of the road surface, the traditional milling machine is at least matched with two hydraulic lifting assemblies for driving the milling rotor, the hydraulic lifting assemblies apply the same force to the milling rotor to enable the milling rotor to descend, and the sinking distance of the milling rotor is controlled to be used for adjusting the treatment depth of the ground.
Due to different road surface conditions, the milling rotor is inclined due to different ground reaction forces caused by uneven transverse horizontal heights of a plurality of road surfaces or uneven hardness distribution of roadbed, and the like, so that the requirement on ground milling cannot be met.
Disclosure of Invention
The invention aims to solve the following problems in the prior art: due to different road surface conditions, the milling rotor is inclined due to different ground reaction forces caused by uneven transverse horizontal heights of a plurality of road surfaces or uneven hardness distribution of roadbed, and the like, so that the requirement on ground milling cannot be met.
In order to solve the problems existing in the prior art, the invention provides a milling machine with a milling self-adaptive hydraulic system, which comprises a frame provided with a main oil pump and an auxiliary oil pump, wherein reversing valves are arranged at the outlet positions of the main oil pump and the auxiliary oil pump, a shaft column is rotated on the surface of the frame, a milling roller assembly is rotated on the surface of the shaft column, two groups of main hydraulic cylinders and auxiliary hydraulic cylinders are symmetrically arranged between the milling roller assembly and the frame, two ends of each main hydraulic cylinder and each auxiliary hydraulic cylinder are respectively and rotationally connected with the milling roller assembly and the frame, the oil inlets and the oil outlets of the main hydraulic cylinders and the auxiliary hydraulic cylinders are respectively connected with the outlets of the main oil pump and the auxiliary oil pump and the reversing valves, two oil regulating devices are symmetrically arranged at the top of the milling roller assembly, the oil outlets of the auxiliary oil pump are connected with the two oil regulating devices in parallel, the oil outlets of the oil regulating devices are in one-to-one correspondence with the oil inlets of the auxiliary hydraulic cylinders, the surface of the shaft post is provided with a leveling device aligned with the oil adjusting device, the frame is connected with a construction vehicle, the milling roller assembly is provided with a roller cutter for milling the ground and a hydraulic driving part, the main oil pump is controlled to supply oil to two main hydraulic cylinders, the main hydraulic cylinders move in a telescopic way to control the milling roller assembly to move up and down, the milling roller assembly is enabled to mill or retract the ground under the supporting of the shaft post, the two auxiliary hydraulic cylinders are evenly supplied with oil through an auxiliary oil pump, the control force on the milling roller assembly is supplemented, when the milling roller assembly is deflected along the shaft post due to the larger reaction force of the bottom surface, the leveling device changes the pressure intensity of the oil adjusting device, the oil inlet quantity of the two auxiliary hydraulic cylinders is changed, the compensating forces on the two sides of the milling roller assembly are changed, the deflection of the milling roller assembly is overcome until the milling roller assembly is restored to a horizontal state, the two auxiliary hydraulic cylinders are again uniformly supplied with oil.
Preferably, each group of auxiliary hydraulic cylinders is provided with two auxiliary hydraulic cylinders, the auxiliary hydraulic cylinders are distributed on two sides of the main hydraulic cylinder, the telescopic ends of the auxiliary hydraulic cylinders are fixedly connected with the telescopic ends of the main hydraulic cylinders, and the oil inlets and the oil outlets of the two auxiliary hydraulic cylinders are respectively connected in series, so that the main hydraulic cylinders and the auxiliary hydraulic cylinders form a force generating unit, and the force output is more uniform.
Preferably, the oil adjusting device comprises a shell, an oil inlet is formed in the bottom of one side of the shell, an oil outlet is formed in the center of the other side of the shell, the oil inlet is communicated with the oil outlet end of an auxiliary oil pump, the oil outlet is connected with an oil inlet of an auxiliary hydraulic cylinder, a middle shell is elastically connected to the inside of the shell through a spring, the cross section of the middle shell is in sliding fit with the inner wall of the shell, the middle shell is communicated with the oil outlet, an outer oil hole is formed in the bottom of the middle shell, a conical outer valve column is fixed at the bottom of the shell, the outer valve column penetrates into the outer oil hole, a pressing column penetrates through the top of the shell in a sliding manner, the pressing column is connected with the middle shell, the pressure of the pressing column is the same as compared with the pressure of the leveling device under normal state, the pressing column pushes the middle shell to be at the same position, the gap between the outer valve column and the outer oil hole is the same, the two oil adjusting devices are kept the same, when the milling roller component deflects, the two oil adjusting devices move up and down respectively, the upward oil adjusting devices are pressed and are increased, the middle shell is pushed down, the position of the outer valve column is inserted into the outer oil hole is deeper, the auxiliary oil hole is connected with the outer valve column, the pressing area between the outer valve column and the outer oil hole is reduced, the hydraulic roller is opposite to the offset, and the offset force of the milling roller is increased, and the offset force is reduced.
Preferably, the oil pocket of link up the oil outlet is seted up to one side of well shell, the cavity has been seted up to well shell opposite side, through the through-hole intercommunication between cavity and the oil pocket, there is the inner shell through spring elastic connection in the cavity, the inner shell link up with the through-hole, the horizontal cross-section and the cavity adaptation of inner shell, the interior oilhole has been seted up to the bottom surface of inner shell, the bottom of cavity is fixed with conical interior valve post, interior valve post and interior oilhole peg graft, the pressure post slides and runs through well shell and inner shell fixed connection, when milling roll subassembly takes place excessively to deflect, the pressure post promotes the inner shell and goes up and down to remove in the well shell, make interior valve post and the oil guide clearance of interior oilhole change, further to assisting the oil guide degree of depth adjustment of pneumatic cylinder, strengthen the adjustment distribution of compensation power.
Preferably, the spring elastic coefficient of the middle shell and the outer shell is smaller than that of the inner shell and the middle shell, so that the gap between the middle shell and the outer shell is changed firstly, the gap between the inner shell and the middle shell is changed later, the oil guiding quantity is adjusted in a distributed mode, oil enters the bottom of the outer shell from the oil inlet hole, enters the bottom of the middle shell through the outer oil hole, enters the inner shell through the inner oil hole, is guided into the oil cavity through the through hole, and is finally discharged from the oil outlet hole.
Preferably, the leveling device comprises a reference plate, the reference plate is fixedly connected with the shaft column, the center position of the top surface of the reference plate is connected with a leveling plate, feeler levers are symmetrically fixed on the bottom surfaces of two ends of the leveling plate, the feeler levers are vertically aligned with the pressing columns, the reference plate and the leveling plate are kept in a horizontal state and are fixed with the shaft column into a whole, the feeler levers are in extrusion contact with the pressing columns to control the oil guiding quantity of the oil adjusting device, and when the angle of the milling roller assembly changes, the oil guiding quantity of the auxiliary hydraulic cylinder is changed through the change of the interference strength of the feeler levers and the pressing columns.
Preferably, the surfaces of the leveling plate and the reference plate are correspondingly provided with connecting blocks in a rotating way, the surface connecting blocks of the leveling plate are rotationally connected with studs, the studs are in threaded connection with the connecting blocks on the surface of the reference plate, the end face of the reference plate is marked with an angle mark, a pointer corresponding to the angle mark is fixed at the rotating part of the leveling plate, through rotating the studs, the included angle between the leveling plate and the reference plate is adjusted, and then the included angle adjustment of the reference plate and the leveling plate can be accurately controlled by comparing the pointer with the angle mark, so that the device is used for changing the initial contact state of the oil adjusting device and the feeler lever and is applied to processing the ground under the inclined state of the device.
Preferably, a buffer device is arranged between the pressing column and the feeler lever, the buffer device comprises a telescopic cylinder, the telescopic cylinder is fixed at the top end of the pressing column, a piston block is arranged in the telescopic cylinder in a sealing sliding manner, a jacking column is fixed on the piston block, the top of the jacking column is penetrated out of the telescopic cylinder in a sealing manner, the jacking column is aligned with the feeler lever, the piston block divides the interior of the telescopic cylinder into two sealing spaces, the jacking column is in contact with the leveling device and is used for transmitting power to the pressing column, air in the telescopic cylinder is compressed through the piston block, and the influence of vibration generated during operation of equipment on the receiving pressure of the oil adjusting device is relieved, so that the oil guiding quantity control of the oil adjusting device is more accurate.
Preferably, the buffer device is connected with the pressure regulating device, the pressure regulating device comprises a sealing shell, the sealing shell is fixed outside the shell, a piston plate is hermetically and slidably arranged in the sealing shell, the piston plate is elastically connected with the sealing shell through a spring, the piston plate divides the interior of the sealing shell into an oil pressure space and an air pressure space, the air pressure space is communicated with the bottom of the telescopic cylinder through a connecting pipe, the oil pressure space is respectively connected with an oil outlet of a main oil pump and an oil inlet of the main hydraulic cylinder through a pipeline, oil of the main oil pump is led into the oil pressure space, the elasticity of the spring and the pressure of the oil enable the piston plate to be kept at a constant position, when the milling roller assembly works at high strength, the oil pressure output by the main hydraulic cylinder is increased, the pressure in the oil pressure space is increased, the piston plate moves to compress the air pressure space, the air pressure in the sealing space of a piston block and the telescopic cylinder is increased through the communication of the connecting pipe, the power transmission buffer amplitude of the jack post to the leveling device is reduced, and the oil regulating sensitivity of the oil regulating device is improved.
Compared with the related art, the milling machine with the milling self-adaptive adjustment hydraulic system has the following beneficial effects:
1. according to the invention, one auxiliary oil pump is connected with two groups of auxiliary hydraulic cylinders to perform power compensation on lifting movement of the milling roller assembly, the leveling device horizontally arranged is aligned with the oil adjusting device, the oil supply efficiency of the two groups of auxiliary hydraulic cylinders is timely adjusted under the deflection state of the milling roller assembly, the compensation driving force of the two groups of auxiliary hydraulic cylinders is changed, and the deflection of the milling roller assembly is corrected, so that the horizontal operation of the milling roller assembly is maintained;
2. according to the invention, through the mutual elastic sliding of the outer shell, the middle shell and the inner shell, the oil guide area of the outer oil hole and the inner oil hole is adjusted, the oil supply quantity of the auxiliary hydraulic cylinder is adjusted in two stages, and the correction efficiency of the milling roller assembly is improved;
3. according to the invention, the buffer device is arranged, so that the interference of working vibration on the pressure receiving of the oil adjusting device is reduced, and the accuracy of the oil adjusting device in adjusting an oil way is improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a second schematic diagram of the overall structure of the present invention;
FIG. 3 is a schematic diagram of the distribution of the main oil pump and the auxiliary oil pump of the present invention;
FIG. 4 is a schematic diagram of a leveling device according to the present invention;
FIG. 5 is one of the schematic diagrams of the oil circuit connections of the main oil pump, the auxiliary oil pump and the oil regulating device of the invention;
FIG. 6 is a second schematic diagram of the oil circuit connection of the main oil pump, the auxiliary oil pump and the oil adjusting device of the present invention;
FIG. 7 is a schematic diagram showing the position distribution of the oil adjusting device, the buffer device and the pressure adjusting device according to the present invention;
FIG. 8 is a schematic diagram of a buffer device and a pressure regulating device according to the present invention;
fig. 9 is a schematic structural diagram of an oil adjusting device according to the present invention.
Reference numerals in the drawings: 1. a frame; 2. a milling roller assembly; 3. a shaft post; 4. a main oil pump; 5. an auxiliary oil pump; 6. a master hydraulic cylinder; 7. an auxiliary hydraulic cylinder; 8. a reference plate; 9. leveling plates; 10. a joint block; 11. a stud; 12. a pointer; 13. an angle mark; 14. a feeler lever; 15. an oil adjusting device; 151. a housing; 152. pressing a column; 153. a middle shell; 154. an inner case; 155. an outer oil hole; 156. an outer spool; 157. an inner oil hole; 158. an inner spool; 159. an oil chamber; 16. a buffer device; 161. a telescopic cylinder; 162. a top column; 163. a piston block; 17. a pressure regulating device; 171. a sealed housing; 172. a piston plate; 173. and connecting pipes.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Specific implementations of the invention are described in detail below in connection with specific embodiments.
Example 1
As shown in fig. 1-6 and 9, a milling machine with a milling self-adaptive hydraulic system comprises a frame 1, wherein a main oil pump 4 and an auxiliary oil pump 5 are arranged on the surface of the frame 1, reversing valves are arranged at the outlet positions of the main oil pump 4 and the auxiliary oil pump 5, a shaft column 3 is rotated on the surface of the frame 1, a milling roller assembly 2 is arranged below the frame 1, the milling roller assembly 2 is rotationally connected with the shaft column 3, two groups of main hydraulic cylinders 6 and auxiliary hydraulic cylinders 7 which are symmetrically arranged are respectively rotationally connected with the milling roller assembly 2 and the frame 1 at two ends, each group of auxiliary hydraulic cylinders 7 is provided with two, two auxiliary hydraulic cylinders 7 are fixed at two sides of the main hydraulic cylinders 6, the telescopic ends of the auxiliary hydraulic cylinders 7 are fixedly connected with the telescopic ends of the main hydraulic cylinders 6, oil inlets and oil outlets of the two auxiliary hydraulic cylinders 7 are respectively connected in series, the inlet and the outlet of the main hydraulic cylinders 4 and the auxiliary oil pump 5 are respectively connected with the reversing valves, two symmetrically distributed oil adjusting devices 15 are arranged at the top of a milling roller assembly 2, the oil outlet ends of an auxiliary oil pump 5 are connected with the two oil adjusting devices 15 in parallel, the oil adjusting devices 15 comprise a shell 151, an oil inlet hole is formed in the bottom of one side of the shell 151, an oil outlet hole is formed in the center position of the other side of the shell 151, the oil inlet hole is communicated with the oil outlet ends of the auxiliary oil pump 5, the oil outlet hole is connected with an oil inlet of an auxiliary hydraulic cylinder 7, the side face of a middle shell 153 is in sliding fit with the inner wall of the shell 151 and is elastically connected through four springs, the middle shell 153 is communicated with the oil outlet hole, an outer oil hole 155 is formed in the bottom of the middle shell 153, a conical outer valve column 156 is fixed at the bottom of the shell 151, the outer oil hole 155 is inserted and aligned, a pressing column 152 is connected with the middle shell 153 in a sliding mode from the top of the shell 151, the surface of a shaft column 3 is provided with a leveling device, the leveling device comprises a reference plate 8, the reference plate 8 is fixedly connected with the shaft column 3, the center position of the top surface of the reference plate 8 is connected with a leveling plate 9, two feeler levers 14 are symmetrically and fixedly arranged on the bottom surfaces of two ends of the leveling plate 9, and the feeler levers 14 are aligned up and down with the pressing column 152;
the frame 1 is connected with a construction vehicle, the milling roller assembly 2 is provided with a roller cutter for milling the ground and a hydraulic driving part, oil is supplied to two main hydraulic cylinders 6 by controlling a main oil pump 4, the main hydraulic cylinders 6 are in telescopic movement for controlling the milling roller assembly 2 to move up and down, the milling roller assembly 2 is used for milling or retracting the ground under the supporting of a shaft post 3, oil is uniformly supplied to two auxiliary hydraulic cylinders 7 by an auxiliary oil pump 5, the control force on the milling roller assembly 2 is supplemented, a standard plate 8 and a leveling plate 9 are kept in a horizontal state in a normal state and are fixed with the shaft post 3 into a whole, a feeler lever 14 is in extrusion contact with a pressing post 152 to control the oil guiding amount of an oil adjusting device 15, when the angle of the milling roller assembly 2 is changed, the pressure intensity of the oil guiding quantity of the auxiliary hydraulic cylinder 7 to the pressing column 152 is changed through the change of the interference intensity of the contact rod 14 and the pressing column 152, the pressing column 152 pushes the middle shell 153 to be at the same position, the gap between the outer valve column 156 and the outer oil hole 155 is the same, the oil guiding quantity of the two oil adjusting devices 15 is kept the same, when the milling roller assembly 2 deflects, the two oil adjusting devices 15 move up and down respectively, the upward oil adjusting devices 15 are pressed to be increased, the pressing column 152 pushes the middle shell 153 to descend, the position of the outer valve column 156 inserted into the outer oil hole 155 is deeper, the oil guiding area between the outer oil hole 155 and the outer valve column 156 is reduced, the compensation force of the auxiliary hydraulic cylinder 7 at the same side is reduced, the compensation force of the auxiliary hydraulic cylinder 7 at the other side is increased, and the deflection of the milling roller assembly 2 is overcome, and the leveling function is realized.
As shown in fig. 9, an oil cavity 159 penetrating through the oil outlet hole and a cavity are formed in the middle shell 153, the cavity is communicated with the oil cavity 159 through a through hole, four springs which are symmetrically distributed up and down are used for elastically mounting the inner shell 154 in the cavity, the side edge of the inner shell 154 is communicated with the through hole, the horizontal section of the inner shell 154 is matched with the cavity, an inner oil hole 157 is formed in the bottom surface of the inner shell 154, a conical inner valve column 158 is fixed at the bottom of the cavity, the inner valve column 158 is spliced with the inner oil hole 157, the pressing column 152 penetrates through the middle shell 153 in a sliding manner and is fixedly connected with the inner shell 154, and the spring elastic coefficient of the connection between the middle shell 153 and the outer shell 151 is smaller than that of the connection between the inner shell 154 and the middle shell 153;
when the milling roller assembly 2 excessively deflects, the pressing column 152 pushes the inner shell 154 to lift and move in the middle shell 153, so that the oil guiding gap between the inner valve column 158 and the inner oil hole 157 is changed, the oil guiding depth of the auxiliary hydraulic cylinder 7 is further adjusted, the adjustment and distribution of compensation force are enhanced, the gap between the middle shell 153 and the outer shell 151 is changed firstly, the gap between the inner shell 154 and the middle shell 153 is changed, the oil guiding quantity is distributed and adjusted, oil enters the bottom of the outer shell 151 from the oil inlet hole, passes through the outer oil hole 155 and enters the bottom of the middle shell 153, passes through the inner oil hole 157 and enters the inner shell 154, is guided into the oil cavity 159 through the through hole, and finally is discharged from the oil outlet hole.
As shown in fig. 4, two vertically corresponding connecting blocks 10 are correspondingly rotatably arranged on the surfaces of a leveling plate 9 and a reference plate 8, the connecting block 10 at the upper part is rotatably connected with a stud 11, the stud 11 is in threaded connection with the connecting block 10 at the lower part, an angle mark 13 is marked on the end surface of the reference plate 8, and a pointer 12 corresponding to the angle mark 13 is fixed at the rotation part of the leveling plate 9;
by rotating the stud 11, the included angle between the leveling plate 9 and the reference plate 8 is adjusted, and then the included angle adjustment of the reference plate 8 and the leveling plate 9 can be accurately controlled by comparing the pointer 12 with the angle indicator 13, so that the device is used for changing the initial contact state of the oil adjusting device 15 and the feeler lever 14 and is applied to processing the ground in the inclined state of the device.
Example two
As shown in fig. 7 and 8, a buffer 16 is provided between the pressing column 152 and the feeler lever 14, the buffer 16 includes a telescopic cylinder 161, the telescopic cylinder 161 is fixed at the top end of the pressing column 152, a piston block 163 is slidably fitted inside the telescopic cylinder 161, the piston block 163 seals the inside of the telescopic cylinder 161 into upper and lower parts, a jacking column 162 is fixed with the piston block 163, and the top of the jacking column 162 is slidably penetrated out of the telescopic cylinder 161 to be aligned with the feeler lever 14;
the piston block 163 is in a suspension state under the action of air pressure, contacts with the leveling device through the jacking column 162 and is used for transmitting power to the compression column 152, compresses air in the telescopic cylinder 161 through the piston block 163 and is used for relieving the influence of vibration generated during the operation of equipment on the receiving pressure of the oil adjusting device 15, so that the oil guiding quantity control of the oil adjusting device 15 is more accurate.
As shown in fig. 8, the pressure regulating device 17 comprises a sealing shell 171, the sealing shell 171 is fixed outside the outer shell 151, a piston plate 172 is hermetically and slidably arranged inside the sealing shell 171, the piston plate 172 is elastically connected with the sealing shell 171 through a spring, the piston plate 172 divides the inside of the sealing shell 171 into an oil pressure space and an air pressure space, the air pressure space is communicated with the bottom of the telescopic cylinder 161 through a connecting pipe 173, the oil pressure space is respectively connected with an oil outlet of the main oil pump 4 and an oil inlet of the main hydraulic cylinder 6 through pipelines, and oil of the main oil pump 4 is led into the oil pressure space;
the elastic force of the spring and the pressure of the oil keep the piston plate 172 at a constant position, when the milling roller assembly 2 works in high intensity, the oil pressure output by the main hydraulic cylinder 6 is increased, the pressure in the oil pressure space is increased, the piston plate 172 moves to compress the air pressure space, the air pressure in the airtight space between the piston block 163 and the telescopic cylinder 161 is increased through the communication of the connecting pipe 173, the power transmission buffer amplitude of the jack post 162 to the leveling device is reduced, and the oil adjusting sensitivity of the oil adjusting device 15 is improved.
Claims (6)
1. The milling machine with the milling self-adaptive hydraulic system comprises a frame (1) provided with a main oil pump (4) and an auxiliary oil pump (5), reversing valves are arranged at outlet positions of the main oil pump (4) and the auxiliary oil pump (5), a shaft column (3) is rotated on the surface of the frame (1), a milling roller assembly (2) is rotated on the surface of the shaft column (3), the milling machine is characterized in that two groups of main hydraulic cylinders (6) and auxiliary hydraulic cylinders (7) are symmetrically arranged between the milling roller assembly (2) and the frame (1), two ends of each main hydraulic cylinder (6) and each auxiliary hydraulic cylinder (7) are respectively connected with the milling roller assembly (2) and the frame (1), an inlet and an outlet of each main hydraulic cylinder (6) and an outlet of each auxiliary hydraulic cylinder (7) are respectively connected with the outlet of the main oil pump (4) and the auxiliary oil pump (5) and the reversing valves, two oil adjusting devices (15) are symmetrically arranged at the top of the milling roller assembly (2), the oil outlet ends of the oil pumps (5) are connected with the two oil adjusting devices (15) in parallel, and the oil adjusting devices (15) are correspondingly connected with the oil adjusting devices (3) on the surfaces of the leveling cylinders (15) one by one;
each group of auxiliary hydraulic cylinders (7) is provided with two auxiliary hydraulic cylinders (7), the auxiliary hydraulic cylinders (7) are distributed on two sides of the main hydraulic cylinder (6), the telescopic ends of the auxiliary hydraulic cylinders (7) are fixedly connected with the telescopic ends of the main hydraulic cylinder (6), and the oil inlets and the oil outlets of the two auxiliary hydraulic cylinders (7) are respectively connected in series;
the oil adjusting device (15) comprises a shell (151), wherein an oil inlet is formed in the bottom of one side of the shell (151), an oil outlet is formed in the center of the other side of the shell (151), the oil inlet is communicated with the oil outlet end of an auxiliary oil pump (5), the oil outlet is connected with an oil inlet of an auxiliary hydraulic cylinder (7), a middle shell (153) is elastically connected inside the shell (151) through a spring, the cross section of the middle shell (153) is in sliding fit with the inner wall of the shell (151), the middle shell (153) is communicated with the oil outlet, an outer oil hole (155) is formed in the bottom of the middle shell (153), a conical outer valve column (156) is fixed at the bottom of the shell (151), the outer valve column (156) penetrates into the outer oil hole (155), a pressing column (152) penetrates through the top of the shell (151), and the pressing column (152) is connected with the middle shell (153);
oil cavity (159) of link up the oil outlet are seted up to one side of well shell (153), cavity has been seted up to well shell (153) opposite side, through the through-hole intercommunication between cavity and oil cavity (159), there is inner shell (154) through spring elastic connection in the cavity, inner shell (154) link up with the through-hole, the horizontal cross-section and the cavity adaptation of inner shell (154), interior oilhole (157) have been seted up to the bottom surface of inner shell (154), the bottom of cavity is fixed with conical interior valve post (158), interior valve post (158) are pegged graft with interior oilhole (157), press post (152) slip runs through well shell (153) and inner shell (154) fixed connection.
2. The milling machine with milling adaptive hydraulic system according to claim 1, characterized in that the spring rate of the connection of the middle shell (153) with the outer shell (151) is smaller than the spring rate of the connection of the inner shell (154) with the middle shell (153).
3. The milling machine with the milling self-adaptive adjustment hydraulic system according to claim 1, characterized in that the leveling device comprises a reference plate (8), the reference plate (8) is fixedly connected with a shaft column (3), a leveling plate (9) is connected to the center of the top surface of the reference plate (8), feeler levers (14) are symmetrically fixed to the bottom surfaces of two ends of the leveling plate (9), and the feeler levers (14) are aligned with the pressing column (152) up and down.
4. A milling machine with a milling adaptive adjustment hydraulic system according to claim 3, characterized in that the surfaces of the leveling plate (9) and the reference plate (8) are correspondingly provided with a joint block (10) in a rotating way, the joint block (10) on the surface of the leveling plate (9) is rotationally connected with a stud (11), the stud (11) is in threaded connection with the joint block (10) on the surface of the reference plate (8), an angle mark (13) is marked on the end surface of the reference plate (8), and a pointer (12) corresponding to the angle mark (13) is fixed on the rotating part of the leveling plate (9).
5. A milling machine with a milling self-adaptive adjustment hydraulic system according to claim 3, characterized in that a buffer device (16) is arranged between the pressing column (152) and the feeler lever (14), the buffer device (16) comprises a telescopic cylinder (161), the telescopic cylinder (161) is fixed at the top end of the pressing column (152), a piston block (163) is sealed and slid in the telescopic cylinder (161), a jacking column (162) is fixed on the piston block (163), the top of the jacking column (162) is sealed and slid out of the telescopic cylinder (161), and the jacking column (162) is aligned with the feeler lever (14).
6. The milling machine with the milling self-adaptive hydraulic system according to claim 5, characterized in that the buffer device (16) is connected with a pressure regulating device (17), the pressure regulating device (17) comprises a sealing shell (171), the sealing shell (171) is fixed on the outer part of the outer shell (151), a piston plate (172) is hermetically and slidingly arranged in the sealing shell (171), the piston plate (172) is elastically connected with the sealing shell (171) through a spring, the piston plate (172) divides the interior of the sealing shell (171) into an oil pressure space and a gas pressure space, the gas pressure space is communicated with the bottom of the telescopic cylinder (161) through a connecting pipe (173), and the oil pressure space is respectively connected with an oil outlet of the main oil pump (4) and an oil inlet of the main hydraulic cylinder (6) through pipelines.
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| CN202210359262.1A CN114855572B (en) | 2022-04-07 | 2022-04-07 | Milling machine with milling self-adaptive adjustment hydraulic system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2753785Y (en) * | 2004-10-11 | 2006-01-25 | 天津市道路桥梁管理处 | Road surface milling-planing machine and its hydraulic running mechanism and hych-aulic operating mechanism |
| CN114214904A (en) * | 2022-01-13 | 2022-03-22 | 柳工无锡路面机械有限公司 | Safety adjusting device and adjusting method of pavement milling machine |
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| DE102013010298A1 (en) * | 2013-06-19 | 2014-12-24 | Bomag Gmbh | Construction machine, in particular road milling machine, and method for compensating for uneven floors for such a construction machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2753785Y (en) * | 2004-10-11 | 2006-01-25 | 天津市道路桥梁管理处 | Road surface milling-planing machine and its hydraulic running mechanism and hych-aulic operating mechanism |
| CN114214904A (en) * | 2022-01-13 | 2022-03-22 | 柳工无锡路面机械有限公司 | Safety adjusting device and adjusting method of pavement milling machine |
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