CN109292629A - A kind of crane Control in Hydraulic Rotation System - Google Patents
A kind of crane Control in Hydraulic Rotation System Download PDFInfo
- Publication number
- CN109292629A CN109292629A CN201811259379.2A CN201811259379A CN109292629A CN 109292629 A CN109292629 A CN 109292629A CN 201811259379 A CN201811259379 A CN 201811259379A CN 109292629 A CN109292629 A CN 109292629A
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- hydraulic
- group
- valve
- fluid port
- oil
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/20—Control systems or devices for non-electric drives
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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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
Abstract
A kind of crane Control in Hydraulic Rotation System, Hydraulic slewing system including fuel tank and one group or more, every group of Hydraulic slewing system includes driving the hydraulic motor group of revolving platform rotation, switch valve group and hydraulic pressure pump group, switch valve group is connected between hydraulic pressure pump group and hydraulic motor group, the switch valve group includes two switch valves, the switch valve includes shell, spool and spring, shell has the first hydraulic fluid port and the second hydraulic fluid port, there is cavity in shell, the cavity includes lower chamber and upper cavity, the section of lower chamber is less than the section of upper cavity, first hydraulic fluid port is connected to lower chamber, second hydraulic fluid port is connected to upper cavity, spool is set in the cavity, spring is located at the top of spool between shell；One switch valve is used for oil inlet, and a switch valve is used for oil return, on the one hand can play the role of switch, and on the other hand control enters hydraulic oil pressure and flow in hydraulic motor group, allows the better control of the operation of hydraulic motor group.
Description
Technical field
The present invention relates to crane more particularly to a kind of crane Control in Hydraulic Rotation System.
Background technique
Mainly include pedestal, pivoting support, revolving platform, derricking gear and hydraulic system around stake formula isolated pillar crane, returns
Turn platform to be rotatably arranged on pedestal by pivoting support, derricking gear is then arranged on revolving platform, the middle part of pedestal
All there are enough spaces, and spud leg to be enable to extend there through with the middle part of revolving platform.Large-scale in stake formula isolated pillar crane,
It is then connected by pivoting support between revolving platform and pedestal, there are three seat rings for pivoting support, and steel ball and spacing block can be arranged directly
The different steel ball of two rows diameter is scheduled according to force-bearing situation in raceway above and below entering.The carrying angle of upper and lower arc raceway is all
90 °, very big axial force and tilting moment can be born.Revolving support outer ring is equipped with external tooth, and hydraulic motor passes through gear connecting band
Dynamic revolving platform rotation.Crane Control in Hydraulic Rotation System provides power and brake for revolving platform.When revolving platform rotates,
Rotary inertia is big, and load is easy to happen shaking, big to the compression shock of Control in Hydraulic Rotation System, and revolving platform starts and stops
It acts frequently.Therefore it is very necessary to improve crane Control in Hydraulic Rotation System security performance.
Summary of the invention
The present invention provides a kind of crane Control in Hydraulic Rotation System, and securely and reliably, starting is steady, and braking is timely, compression shock
Small, the utilization rate height of energy is influenced on crane Control in Hydraulic Rotation System.
In order to solve the above technical problems, the technical scheme is that a kind of crane Control in Hydraulic Rotation System, including fuel tank
With one group or more of Hydraulic slewing system, every group of Hydraulic slewing system includes the hydraulic motor group for driving revolving platform rotation, opens
Valve group and hydraulic pressure pump group are closed, switch valve group is connected between hydraulic pressure pump group and hydraulic motor group, and hydraulic motor group is equipped with motor
Braking mechanism；The switch valve group includes two switch valves, and the switch valve includes shell, spool and spring, shell tool
There are the first hydraulic fluid port and the second hydraulic fluid port, there is cavity in shell, the cavity includes lower chamber and upper cavity, the section of lower chamber
Less than the section of upper cavity, the first hydraulic fluid port is connected to lower chamber, and the second hydraulic fluid port is connected to upper cavity, and spool is set in the cavity, valve
The lower end side of core is equipped with the inclined-plane that can cooperate with lower chamber upper surface, and spring is located at the top of spool between shell, wherein one
First hydraulic fluid port of switch valve is connected to one end of hydraulic pressure pump group, wherein one end of the second hydraulic fluid port of a switch valve and hydraulic motor group
Connection, the first hydraulic fluid port of another switch valve are connected to the other end of hydraulic pressure pump group, the second hydraulic fluid port of another switch valve and hydraulic horse
The other end up to group is connected to.
In this configuration, two opening valves are set, and a switch valve is used for oil inlet, and a switch valve is used for oil return.Therefore,
On the one hand it can play the role of switch, on the other hand can control the hydraulic oil pressure and flow entered in hydraulic motor group, allow
The better control of the operation of hydraulic motor group.Revolving platform needs to rotate, starting hydraulic pressure pump group, hydraulic oil access switch valve, by
Gradually push spool open, hydraulic motor group driving force is gradually increased, and hydraulic motor is connected by gear drives revolving platform to rotate, in this way
Revolving platform starting is steady；When revolving platform needs to brake stopping, spool gradually resets under spring action, hydraulic motor group
Driving force is gradually added and subtracted small, and the braking of such revolving platform stops steady；When load shakes, pressure is generated to hydraulic motor group
Power impact, switchs the spring works in valve group, impact of the venting pressure change to crane Control in Hydraulic Rotation System.Due to the present invention
Control in Hydraulic Rotation System use closed type hydraulic system, therefore, the utilization rate of energy is high.
Further, it is equipped with the control port communicated with the cavity of setting spring on the shell；The of two switch valves
It is connected separately with the first control shuttle valve on one hydraulic fluid port, the second control shuttle valve is connected between two first control shuttle valves, second
The output end of control shuttle valve is connected with two-position three way magnetic valve, and control port is connected on two-position three way magnetic valve, two-position three way
Solenoid valve is connected to fuel tank.The structure, when two-position three way magnetic valve not it is electric when, control port is connected to fuel tank, spool only by
To the power of spring, when two-position three way magnetic valve obtains it is electric when, the first hydraulic fluid port is by the first control shuttle valve and the second control shuttle valve through two
Position-3-way solenoid valve is connected to control port, in this way, spool is transported in the pressure of the hydraulic oil by control port to the first hydraulic fluid port
It is dynamic, the first hydraulic fluid port and the second hydraulic fluid port intercommunication of same switch valve are prevented, at this point, the hydraulic oil of hydraulic pressure pump group cannot drive hydraulic horse
Up to group, at this time, it is desirable that the motor in the hydraulic motor group connecting with the road stops, and plays the role of protecting hydraulic system, improve
The security performance of hydraulic system.
Further, the second hydraulic fluid port of all switch valves for oil inlet is connected to the first confluence valve block simultaneously, and first
Confluence valve block is connected to one end of all hydraulic motor groups, and the second hydraulic fluid port of all switch valves for oil return is connected to simultaneously
In second confluence valve block, the second confluence valve block is connected to the other end of all hydraulic motor groups；In same group of revolution hydraulic pressure system
One end of the hydraulic motor group of system be connected with third confluence valve block, same group of Hydraulic slewing system hydraulic motor group it is another
End is connected with the 4th confluence valve block, and third confluence valve block is connected to the first confluence valve block, the 4th confluence valve block and the second manifold valve
Block connection.In this way, realizing hydraulic oil centralized oil supply and concentrating oil return, guarantee that charge oil pressure is consistent consistent with return pressure.
Further, the hydraulic pressure pump group includes passing through same motor-driven two hydraulic pumps；The hydraulic horse
It include four hydraulic motors up to group.It is driven by same motor, guarantees two hydraulic pump synchronous workings.
Further, it is connected with flushing valve in the first hydraulic fluid port of wherein one group of switch valve group, flushing valve connects fuel tank.Such as punching
Valve opening is washed, then the hydraulic oil in hydraulic system returns in fuel tank from flushing valve, plays the purpose in flushing of hydraulic circuit, guarantees
Hydraulic circuit is not blocked and can be worked normally, while improving the heat dissipation performance of hydraulic system.
For crane Control in Hydraulic Rotation System, after Hydraulic slewing system is full of hydraulic oil, hydraulic pressure pump group starting is hydraulic
Oil is discharged from hydraulic pressure pump group, after switching valve group, pushes the rotation of hydraulic motor group, while brake system works, motor brake
Hydraulic motor group is unclamped by mechanism, and the rotation of hydraulic motor group drives revolving platform rotation, and hydraulic oil is from hydraulic motor back through opening
Valve group is closed, is returned in hydraulic pressure pump group；Hydraulic pressure pump group rotates backward, and running of hydraulic power oil is contrary, and revolving platform rotates backward；Liquid
Pressure motor group stops working, and motor brake mechanism limitation hydraulic motor group turns to stopping；The crane Control in Hydraulic Rotation System
Hydraulic oil recycles in crane Control in Hydraulic Rotation System, using closed type hydraulic system, reduces the loss of energy, the utilization of energy
Rate greatly improves；It switchs valve group and guarantees that crane Control in Hydraulic Rotation System is safe and reliable, starting is steady, brakes in time, pressure punching
It hits small on the influence of crane Control in Hydraulic Rotation System.
Detailed description of the invention
Fig. 1 is present hydraulic system piping diagram one.
Fig. 2 is present hydraulic system piping diagram two.
Fig. 3 is cooling system fluid pressure line figure.
Fig. 4 is oil-supplementing system fluid pressure line figure.
Fig. 5 is brake system and hydraulic emergency system fluid pressure line figure.
Fig. 6 is crane Control in Hydraulic Rotation System fluid pressure line figure.
Fig. 7 is the schematic diagram for switching valve group.
Fig. 8 is the schematic diagram of motor brake mechanism.
Fig. 9 is the schematic diagram of brake solenoid directional control valve.
Figure 10 is the schematic diagram of emergency manual multiple-way valve.
Figure 11 is the schematic diagram of emergency brake overflow valve and emergency brake hydraulic-control two-position three-way reversing valve.
Figure 12 is the piping diagram of hydraulic pump.
LO1, LO2, BR1, BR2, SA1, SA2, SB1, SB2, SA3, SA4, SB3, SB4, EM1, EM2 are sequentially connected in Fig. 1
LO1, LO2, BR1, BR2, SA1, SA2, SB1, SB2, SA3, SA4, SB3, SB4, EM1, EM2 in Fig. 2, BR1, BR2 in Fig. 2,
EM1, EM2 are sequentially connected BR1, BR2, EM1, EM2 in Fig. 5, and SA1, SA2, SB1, SB2, SA3, SA4, SB3, SB4 be successively in Fig. 2
SA1, SA2, SB1, SB2, SA3, SA4, SB3, SB4 in connection figure 6.
Specific embodiment
The present invention is described in further details with reference to the accompanying drawings and detailed description.
As shown in Figures 1 to 6, a kind of crane hydraulic system, including fuel tank 100, the lifting for driving revolving platform
Machine Control in Hydraulic Rotation System 200, brake system 300, the cooling system 400 for reducing oil temperature, the repairing system for supplementing oil mass
System 500, for breaking down when the hydraulic emergency system 600 that starts.
Crane Control in Hydraulic Rotation System 200, cooling system 400, oil-supplementing system 500 are relatively independent, influence each other small, can be with
It works independently, improves the stability of hydraulic system.Crane Control in Hydraulic Rotation System 200 and brake system 300 are interrelated, mutually
It ensures, improves the security performance of hydraulic system.With hydraulic emergency system, the security performance of hydraulic system is further increased.
Liquidometer R04, air cleaner R03, fluid level controller R02, return filter R01, temperature are connected on fuel tank 100
Spend transmitter R07, hydraulic oil heater R06.Liquidometer R04 is located at 100 left side of fuel tank, and temperature transmitter R07 and hydraulic oil add
Hot device R06 is located at 100 right side of fuel tank, and air cleaner R03 and return filter R01 are located at 100 top of fuel tank, fluid level controller
R02 is protruded at the top of fuel tank 100 inside fuel tank 100.
As shown in Fig. 1 to Fig. 6, Figure 12, crane Control in Hydraulic Rotation System 200 includes two groups of Hydraulic slewing systems, and every group is returned
Turning hydraulic system includes the hydraulic motor group 1 for driving revolving platform rotation, switch valve group 2 and hydraulic pressure pump group 3.
Switch valve group 2 is connected between hydraulic pressure pump group 3 and hydraulic motor group 1, and hydraulic motor group 1 is equipped with motor brake machine
Structure 4, motor brake mechanism 4 are connect with brake system 300, and the hydraulic oil in hydraulic pressure pump group 3 passes through through the outlet end of hydraulic pressure pump group 3
Switch valve group 2 enters hydraulic motor group 1 and then returns in hydraulic pressure pump group 3 through switching valve group 2.
Hydraulic pressure pump group 3 includes two hydraulic pumps 301 driven by same motor 306；In the present embodiment, hydraulic motor
Group 1 includes four hydraulic motors 101.The corresponding motor brake mechanism 4 of each hydraulic motor 101.
As shown in Fig. 1, Fig. 6 and Fig. 7, switch valve group 2 includes two switch valves 201, and the switch valve 201 includes shell
21, spool 22 and spring 23, shell 21 have the first hydraulic fluid port A1 and the second hydraulic fluid port A2, have cavity 211 in shell 21, described
Cavity 211 includes lower chamber C1 and upper cavity C2, and the section of lower chamber C1 is less than the section of upper cavity C2, and the first hydraulic fluid port A1 is under
Cavity C1 connection, the second hydraulic fluid port A2 are connected to upper cavity C2, and spool 22 is located in cavity 211, and the lower end side of spool 22 is equipped with
The inclined-plane 221 that can cooperate with the end face C1 on lower chamber, spring 23 are located between 22 top of spool and shell 21, and spring 23 is located at upper
In cavity C 2.The control port 212 communicated with the cavity of setting spring is equipped at the top of shell 21；In two switch valves 201
The first hydraulic fluid port A1 on be connected separately with the first control shuttle valve 24, another input terminal of the first control shuttle valve 24 and corresponding switch
Second hydraulic fluid port A2 connection of valve is connected with the second control shuttle valve 25 between the output end of two first control shuttle valves 24, second
The output end of control shuttle valve 25 is connected with two-position three way magnetic valve 26, and control port 212 is connected on two-position three way magnetic valve 26,
Two-position three way magnetic valve 26 is connected to fuel tank 100.When two-position three way magnetic valve 26 not it is electric when, control port 212 and fuel tank 100 connect
It is logical, the only power by spring 23 of spool 22, when two-position three way magnetic valve 26 it is electric when, the first hydraulic fluid port A1 passes through the first control shuttle
Valve 24 and the second control shuttle valve 25 are connected to through two-position three way magnetic valve 26 with control port 212, in this way, spool 22 is passing through control
The pressure of the hydraulic oil of hydraulic fluid port 212 is moved to the first hydraulic fluid port A1, prevents the first hydraulic fluid port A1 and the second hydraulic fluid port A2 of same switch valve
Intercommunication, at this point, the hydraulic oil of hydraulic pressure pump group cannot drive hydraulic motor group, at this time, it is desirable that the hydraulic motor group being connect with the road
In motor 302 stop, playing the role of protect hydraulic system, improve the security performance of hydraulic system.
First oil of the one end of corresponding two hydraulic pumps 301 in a wherein switch valve 201 in each Hydraulic slewing system
Mouth A1 collects, first oil of the other end of corresponding two hydraulic pumps 301 in another switch valve 201 in each Hydraulic slewing system
Mouth A1 collects, in this way, the hydraulic fluid flow rate entered in switch valve and pressure can be made to stablize, improves crane hydraulic gyration system
The stability of system operation.
As shown in Fig. 2, the second hydraulic fluid port A2 of all switch valves 201 for oil inlet is connected to the first confluence valve block 5 simultaneously
On, the first confluence valve block 5 is connected to one end of all hydraulic motors 101, the second oil of all switch valves 201 for oil return
Mouth A2 is connected in the second confluence valve block 6 simultaneously, and the second confluence valve block 6 is connected to the other end of all hydraulic motors 101；?
One end of the hydraulic motor 101 of same group of Hydraulic slewing system is connected with third confluence valve block 7, in same group of Hydraulic slewing system
The other end of hydraulic motor 101 be connected with the 4th confluence valve block 8, third confluence valve block 7 is connected to the first valve block 5 of converging, the
Four confluence valve blocks 8 are connected to the second confluence valve block 6.In this way, realizing hydraulic oil centralized oil supply and concentrating oil return, guarantee that fuel feeding is consistent
It is consistent with return pressure.
It is connected with flushing valve 9 in the first hydraulic fluid port A1 of wherein one group of switch valve group 2, flushing valve 9 connects fuel tank 100.It rinses
Valve 9 develops the sundries in hydraulic system, guarantees the normal work of hydraulic system, while improving the thermal diffusivity of hydraulic system
Energy.
As shown in figure 8, motor brake mechanism 4 includes brake cylinder body 41, Braking piston 42, Braking piston bar 43 and brake bullet
Spring 44, Braking piston 42 are located in brake cylinder body 41, and one end of Braking piston bar 43 is connected on Braking piston 42, Braking piston
The other end of bar 43 stretches out one end of brake cylinder body 41, and brake spring 44 is located between brake cylinder body 41 and Braking piston 42 and position
In one end far from Braking piston bar.Hydraulic fluid port 45 is equipped with far from one end of brake spring 44 in brake cylinder body 41.This structure
Motor brake mechanism 4, when no hydraulic oil enters in brake cylinder body 41, brake spring 44 gives Braking piston 41 1 bullet
Power allows Braking piston bar 43 to act on hydraulic motor, in this way, playing the role of brake to hydraulic motor, if to allow hydraulic
Motor operations then need to provide a hydraulic oil to brake cylinder body 41 by hydraulic fluid port 45, the pressure of hydraulic oil are allowed to overcome brake spring
44 elastic force moves Braking piston 42 and Braking piston bar 43, achievees the purpose that release brake, this structure, improper
Or under off working state, motor brake mechanism plays the role of brake, in this way, the security performance of revolution can be improved.
As shown in figure 5, brake system 300 includes sequentially connected brake-fluid press pump 501, brake filter 502, brake list
To valve 503, brake solenoid directional control valve 504, brake shuttle valve 505 and one-way throttle valve 506.As shown in figure 9, brake solenoid directional control valve
503 be two-position four-way solenoid directional control valve, brake solenoid directional control valve not it is electric when, brake check valve 503 output end and brake
The end b of solenoid directional control valve 503 connects, and the end a of brake solenoid directional control valve 503 is connect with fuel tank 100, and brake solenoid directional control valve 503
The end c with brake shuttle valve connect.As shown in figure 5, the input terminal of brake-fluid press pump 501 connects fuel tank 100, one-way throttle valve 506
Connect the hydraulic fluid port 45 of motor brake mechanism 4；Brake accumulator 507 is connected in the output end of brake check valve 503.
Above-mentioned brake system, if brake-fluid press pump 501 does not start, the hydraulic oil in motor brake mechanism 4 is unidirectionally saved
Stream valve 506, brake shuttle valve 505 and brake solenoid directional control valve 504 are connected to fuel tank, and motor brake mechanism 4 limits hydraulic motor 101
Rotation, plays the role of brake.When brake-fluid press pump 501 starts, while the solenoid directional control valve 504 that brakes obtains electric transposition, fuel tank
Hydraulic oil in 100 enters the filtering of brake filter 502 then through brake check valve 503, brake after brake-fluid press pump 501
Solenoid directional control valve 504, brake shuttle valve 505 and one-way throttle valve 506 are entered in motor brake mechanism 4 by hydraulic fluid port, open brake
Car spring 44 plays the role of releasing brake.If the oil pressure of brake system is inadequate, energy can be provided by brake accumulator 507
Amount, ensure that the normal work of motor brake mechanism.
As shown in figure 5, hydraulic emergency system includes Emergency Hydraulic Pump 508, emergency manual multiple-way valve 509, two-way put down of meeting an urgent need
Weigh valve 510 and emergency brake pipeline 511.
508 oil inlet of Emergency Hydraulic Pump connects fuel tank 100, the outlet of Emergency Hydraulic Pump 508 connection emergency manual multiple-way valve
509。
As shown in Figure 10, emergency manual multiple-way valve 509 includes three seven logical hand-operated direction valve H01, overflow valve H02, overflow
Valve H03, shuttle valve H04, overflow valve H05, overflow valve H06 and shuttle valve H07.Before three seven logical hand-operated direction valve H01 are not operated, emergency
The output end of hydraulic pump 508 is connect with the end f of three seven logical hand-operated direction valve H01, oil return line H08 simultaneously with three seven logical hands
The end e, g connection of dynamic reversal valve H01, the end h of three seven logical hand-operated direction valve H01 are connected by overflow valve H05 and oil return line H08
It connecing, the end i of three seven logical hand-operated direction valve H01 is connect by that should use up oil inlet pipe 512 with wherein one end of hydraulic motor, and three
The end j of seven logical hand-operated direction valve H01 is connect by oil return line 513 of meeting an urgent need with the other end of hydraulic motor, above-mentioned emergency oil inlet
Pipeline and emergency oil return line can mutually change, and the end k of three seven logical hand-operated direction valve H01 by overflow valve H06 and is returned
Oil pipe line H08 connection connects shuttle valve H04, a wherein input for the output end and shuttle valve H07 of shuttle valve H04 between the end h and the end k
End connection；Overflow valve H02 and overflow valve H03 are parallel between the outlet and oil return line H08 of Emergency Hydraulic Pump 508.
As shown in Fig. 5 and Figure 11, emergency oil inlet pipe 512 is connected to same group of hydraulic horse by the 4th confluence valve block 8
The one end reached, emergency oil return line 513 are connected to the other end of same group of hydraulic motor 301 by the 4th confluence valve block 7,
Emergency Bidirectional balanced valve 510 is connected between emergency oil inlet pipe 512 and emergency oil return line 513, in emergency oil inlet pipe 512
It is connected with emergency shuttle valve 514 between emergency oil return line 513, connects emergency brake pipeline in the output end of emergency shuttle valve 514
511, emergency brake pipeline 511 is connected on brake shuttle valve 505；Emergency brake is connected in turn on emergency brake pipeline 511
Overflow valve 515 and emergency brake hydraulic-control two-position three-way reversing valve 516, emergency brake hydraulic-control two-position three-way reversing valve 516 are connected to oil
Case 100.
When crane Control in Hydraulic Rotation System 200 breaks down, crane Control in Hydraulic Rotation System 200 can not work, hydraulic
Emergency system starting, manually opened three seven logical hand-operated direction valve H01 allow three seven logical hand-operated direction valve H01 to replace, liquid of meeting an urgent need
Hydraulic oil is sucked out press pump 508 from fuel tank 100, and the hydraulic oil is successively by emergency manual multiple-way valve 509, emergency Bidirectional balanced valve
Then 510 push the work of hydraulic motor group 1, control revolving platform rotation, while section hydraulic oil from emergency shuttle valve 514 by brake
Vehicle overflow valve 515, emergency brake hydraulic-control two-position three-way reversing valve 516, emergency brake pipeline 511, brake shuttle valve and one-way throttle
Valve 506 is entered in motor brake mechanism 4 by hydraulic fluid port, controls the brake of motor brake mechanism.In this way at crane hydraulic time
When transfering from one department to another system failure, security performance can be improved.In addition, when the output oil pressure of Emergency Hydraulic Pump 508 is excessive, overflow valve
H02 and overflow valve H03 can play the role of overflow pressure control.Overflow valve H05 and overflow valve H06 plays control to the oil pressure of oil return line
The effect of pressure.
As shown in figure 4, oil-supplementing system 500 includes fluid infusion pressure oil press pump 401 motor-driven, repairing filter 402, mends
Oily check valve 403 and repairing overflow valve 404, repairing hydraulic pump 401 and brake-fluid press pump 501 are by same motor driven, repairing
401 oil inlet of hydraulic pump is connect with fuel tank 100, and 401 oil outlet of repairing hydraulic pump connects repairing filter 402, repairing filter
402 oil outlets connect the oil inlet of repairing check valve 403, the outlet of repairing check valve 403 connection repairing manifold valve 405, hydraulic oil
It is shunted by repairing manifold valve 405 to four hydraulic pump repairings, repairing overflow valve 404 is located at repairing check valve and repairing manifold valve
Between 405, repairing overflow valve 404 is connected to fuel tank 100；Guarantee that hydraulic system internal hydraulic pressure oil is constant in this way, guarantees that oil pressure is steady
It is fixed.Repairing accumulator 406 is connected between repairing check valve 403 and repairing return valve 404, when oil-supplementing system instantaneous pressure increases
When big, repairing accumulator absorbs the energy of this part, releases when system needs, and by hydraulic, to guarantee oil-supplementing system
Pressure is normal.
As shown in figure 3, cooling system 400 includes cooling hydraulic pump 302, cooler 303, cooling check valve 304, coolant liquid
Press pump 302 is driven by a motor, and the input terminal of cooling hydraulic pump 302 connects fuel tank 100, and hydraulic oil, warp is discharged in cooling hydraulic pump 302
It is divided into two-way after subcooler 303, flow back after supercooling check valve 304 fuel tank all the way, and a-road-through supercooling manifold valve 305 divides
Stream respectively enters in the shell of four hydraulic pumps 301, and the cooling oil in four hydraulic pumps 301, finally flow back fuel tank；Such shape
At independent cooling cycle, hydraulic oil cooling rate is fast.For the cooling check valve 304 of the system, when oil pressure is not up to cooling single
To valve 304 maximum pressure when, hydraulic oil will not be flow back into fuel tank 100 from cooling check valve, if it is greater than cooling check valve
304 maximum pressure, then hydraulic oil flow back into fuel tank from cooling check valve, plays the role of protecting cooling system.
Working method of the invention include the working method of crane Control in Hydraulic Rotation System, the working method of brake system,
The working method of the working method of cooling system, the working method of oil-supplementing system and hydraulic emergency system.
It first passes through oil-supplementing system and squeezes into hydraulic oil to crane Control in Hydraulic Rotation System, the working method of oil-supplementing system is: mending
Oil system pushes repairing check valve 403 open and flows to hydraulic pressure pump group from fuel tank draw oil after the filtering of repairing filter 402
1,403 output end of repairing check valve is connected with repairing overflow valve 404, and 404 overflow port of repairing overflow valve connects fuel tank, when revolution liquid
Pressure system is full of hydraulic oil, and pressure exceeds specified pressure, and repairing overflow valve 404 is opened, hydraulic oil reflux fuel tank.
The working method of crane Control in Hydraulic Rotation System is: crane Control in Hydraulic Rotation System is full of hydraulic oil, hydraulic pressure pump group 3
Starting, hydraulic oil is discharged from hydraulic pressure pump group 3, after switching valve group 2, pushes hydraulic motor group 1 to rotate, while brake system work
Make, hydraulic motor group 1 is unclamped by motor brake mechanism 4, and the rotation of hydraulic motor group 3 drives revolving platform rotation, and hydraulic oil is from hydraulic
Groups of motors 1 returns in hydraulic pressure pump group 3 back through switch valve group 2；Hydraulic pressure pump group 3 rotates backward, and running of hydraulic power oil direction is anti-
Turn, revolving platform rotates backward；Hydraulic motor group 1 stops working, and motor brake mechanism limitation hydraulic motor group 1, which turns to, stops
Only.
The working method of brake system is: hydraulic oil is sucked out from fuel tank by brake-fluid press pump 501, into brake filter
Brake solenoid directional control valve 504 is flowed into after 502 filterings, brake solenoid directional control valve 504 obtains electric transposition, and list is pushed forward in hydraulic oil continuation open
To throttle valve 506, motor brake mechanism 4 is finally entered, start it and leaves hydraulic motor group 1；It is needed when revolving platform rotates
Slow down or stop, brake solenoid directional control valve 504 replaces, and brake solenoid directional control valve 504 connects fuel tank, and hydraulic oil successively passes through list
504 fuel tanks are returned to throttle valve 506, brake shuttle valve 505, brake solenoid directional control valve, motor brake mechanism 4 is multiple under spring action
Position allows 1 velocity of rotation of hydraulic motor group to reduce or until hydraulic motor group 1 stops operating.
The working method of cooling system is: hydraulic oil from fuel tank be cooled hydraulic pump 302 be sucked out, it is cold through subcooler 303
But it is divided into two-way afterwards, all the way through the reflux fuel tank of supercooling check valve 304, enters the cooling revolution hydraulic pressure system of hydraulic motor group 3 all the way
Hydraulic oil in system, finally flow back fuel tank, constantly recycles in this way, does not stop cooling hydraulic oil.
The working method of emergency hydraulic system is: when crane Control in Hydraulic Rotation System breaks down, crane hydraulic time
Transfering from one department to another system can not work, and hydraulic oil is sucked out emergency hydraulic system starting, Emergency Hydraulic Pump 508 from fuel tank, successively by emergency
Manual multiple-way valve 509, emergency Bidirectional balanced valve 510, push hydraulic motor group 1 to work, and control revolving platform rotation is met an urgent need simultaneously
Brake line 511 controls motor brake mechanism 4 and leaves hydraulic motor group 1 to 4 fuel feeding of motor brake mechanism；
The beneficial effect of the invention compared with the existing technology is: above-mentioned crane hydraulic system and working method,
For crane Control in Hydraulic Rotation System, after Hydraulic slewing system is full of hydraulic oil, hydraulic pressure pump group starting, hydraulic oil is from hydraulic
Pump group discharge pushes the rotation of hydraulic motor group, while brake system works, motor brake mechanism is unclamped after switching valve group
Hydraulic motor group, the rotation of hydraulic motor group drive revolving platform rotation, and hydraulic oil, back through switch valve group, is returned from hydraulic motor
Into hydraulic pressure pump group；Hydraulic pressure pump group rotates backward, and running of hydraulic power oil is contrary, and revolving platform rotates backward；Hydraulic motor group
It stops working, motor brake mechanism limitation hydraulic motor group turns to stopping；The hydraulic oil of the crane Control in Hydraulic Rotation System exists
It is recycled in crane Control in Hydraulic Rotation System, using closed type hydraulic system, reduces the loss of energy, the utilization rate of energy is greatly
It improves.Independent brake system is set, can preferably realize brake；Due to using enclosed crane Control in Hydraulic Rotation System,
Hydraulic pressure pump group can generate a large amount of heat, by the way that cooling system is arranged, can cool down to hydraulic pressure pump group, improve hydraulic pressure pump group
Service life reduces the failure likelihood of hydraulic pressure pump group, due to being provided with cooling check valve, in this way, being avoided that cooling hydraulic oil
Reflux；Due to being provided with oil-supplementing system, repairing timely can be carried out to crane Control in Hydraulic Rotation System, guarantee crane
Control in Hydraulic Rotation System can work normally, due to can control the hydraulic fluid pressure in oil-supplementing system in this way provided with repairing overflow valve,
It avoids in oil-supplementing system hydraulic fluid pressure excessive and influences the hydraulic fluid pressure in crane Control in Hydraulic Rotation System, due to being provided with
Repairing check valve, in this way, the hydraulic oil reflux being avoided that in oil-supplementing system.Due to being provided with hydraulic emergency system, in this way, once
The failure of crane Control in Hydraulic Rotation System, then can start hydraulic emergency system, improve security performance；Due to being provided with two-way put down of meeting an urgent need
Weigh valve, in this way, can guarantee output end and the input terminal pressure balance of emergency Bidirectional balanced valve；Brake shuttle valve and hydraulic emergency system
Connection realizes that emergency releases brake.
Claims (5)
1. a kind of crane Control in Hydraulic Rotation System, including fuel tank, it is characterised in that: further include one group or more of revolution hydraulic pressure system
System, every group of Hydraulic slewing system include the hydraulic motor group for driving revolving platform rotation, switch valve group and hydraulic pressure pump group, switch valve
Group is connected between hydraulic pressure pump group and hydraulic motor group, and hydraulic motor group is equipped with motor brake mechanism；The switch valve group
Including two switch valves, the switch valve includes shell, spool and spring, and shell has the first hydraulic fluid port and the second hydraulic fluid port, outside
There is cavity, the cavity includes lower chamber and upper cavity, and the section of lower chamber is less than the section of upper cavity, the first oil in shell
Mouth is connected to lower chamber, and the second hydraulic fluid port is connected to upper cavity, and spool is set in the cavity, and the lower end side of spool is equipped with energy and cavity of resorption
The inclined-plane of body upper surface cooperation, spring are located at the top of spool between shell, wherein the first hydraulic fluid port and hydraulic pump of a switch valve
One end connection of group, wherein the second hydraulic fluid port of a switch valve is connected to one end of hydraulic motor group, the first oil of another switch valve
Mouth is connected to the other end of hydraulic pressure pump group, and the second hydraulic fluid port of another switch valve is connected to the other end of hydraulic motor group.
2. a kind of crane hydraulic system according to claim 1, it is characterised in that: be equipped on the shell and setting spring
The control port that communicates of cavity；The first control shuttle valve is connected separately on the first hydraulic fluid port of two switch valves, two first
It is connected with the second control shuttle valve between control shuttle valve, two-position three way magnetic valve is connected in the output end of the second control shuttle valve, controls
Liquefaction mouth is connected on two-position three way magnetic valve, and two-position three way magnetic valve is connected to fuel tank.
3. a kind of crane control system according to claim 1, it is characterised in that: all switch valves for oil inlet
Second hydraulic fluid port is connected to simultaneously in the first confluence valve block, and the first confluence valve block is connected to one end of all hydraulic motor groups, institute
There is the second hydraulic fluid port of the switch valve for oil return while being connected to the second confluence valve block, the second confluence valve block is connected to all
The other end of hydraulic motor group；It is connected with third confluence valve block in one end of the hydraulic motor group of same group of Hydraulic slewing system,
The 4th confluence valve block, third confluence valve block and first are connected in the other end of the hydraulic motor group of same group of Hydraulic slewing system
Valve block of converging connection, the 4th confluence valve block are connected to the second confluence valve block.
4. a kind of crane control system according to claim 1, it is characterised in that: the hydraulic pressure pump group includes passing through
Same motor-driven two hydraulic pumps；The hydraulic motor group includes four hydraulic motors.
5. a kind of crane hydraulic system according to claim 4, it is characterised in that: the of wherein one group of switch valve group
One hydraulic fluid port is connected with flushing valve, and flushing valve connects fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811259379.2A CN109292629B (en) | 2018-10-26 | 2018-10-26 | Hydraulic rotating system of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811259379.2A CN109292629B (en) | 2018-10-26 | 2018-10-26 | Hydraulic rotating system of crane |
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| Publication Number | Publication Date |
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| CN109292629A true CN109292629A (en) | 2019-02-01 |
| CN109292629B CN109292629B (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811259379.2A Active CN109292629B (en) | 2018-10-26 | 2018-10-26 | Hydraulic rotating system of crane |
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| JPH06263380A (en) * | 1993-03-09 | 1994-09-20 | Hitachi Constr Mach Co Ltd | Speed control circuit for crane |
| CN2680913Y (en) * | 2004-01-29 | 2005-02-23 | 刘春生 | Direct moving type hydraulic overflow valve having valve port dynamic pressure feedback |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109292629B (en) | 2020-05-05 |
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