CN1969129A - Drive device for rotation, and working machine - Google Patents
Drive device for rotation, and working machine Download PDFInfo
- Publication number
- CN1969129A CN1969129A CNA2006800003183A CN200680000318A CN1969129A CN 1969129 A CN1969129 A CN 1969129A CN A2006800003183 A CNA2006800003183 A CN A2006800003183A CN 200680000318 A CN200680000318 A CN 200680000318A CN 1969129 A CN1969129 A CN 1969129A
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- working fluid
- motor
- swing arm
- pump
- cylinder
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
- E02F9/2062—Control of propulsion units
- E02F9/2075—Control of propulsion units of the hybrid type
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2221—Control of flow rate; Load sensing arrangements
- E02F9/2239—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
- Hybrid Electric Vehicles (AREA)
Abstract
A control circuit (91) for rotation is separately placed from a fluid pressure actuator control circuit (25). In the control circuit (91) for rotation, a pump/motor (95) for rotation is connected to closed circuits (92, 93) of a rotation motor (4swh) via a solenoid valve (94) as a directional control valve. A motor/generator (96) for rotation is connected to the pump/motor (95). The motor/generator (96) for rotation is connected to an electric accumulator (23) of a hybrid drive device (10). A path (97) for communication to the outside of a system is led out from piping between the pump/motor (95) for rotation and the solenoid valve (94), and the path (97) feeds operation fluid to fluid pressure actuators of a lower traveling body and a working device. A connection path solenoid valve (98) is provided in the path (97). Fluid pressure energy produced in a rotation system can be directly fed to the outside of the rotation system.
Description
Technical field
The present invention relates to drive device for rotation, this drive device for rotation has the supply of accepting working fluid and drives the turning motor of load rotation, and relates to and be arranged to utilize this drive device for rotation to make upper rotating body with respect to the rotatable Work machine of bottom runner.
Background technique
In Work machines such as hydrodynamic pressure excavator, use under the situation of combined type drive unit, be used to make upper rotating body generally to use motor with actuator with respect to the rotation of bottom runner spinning movement, utilize this motor, make upper rotating body spinning movement (for example, with reference to patent documentation 1) by speed reducer.
Because the inertial force of upper rotating body is big, this motor plays a role as generator when rotation brake, so also rotating energy can be put aside in electric storage means as electric power, but the actuator beyond the rotary system is to accept the supply of working fluid and during the fluid pressure actuator that moves, the dump energy that produces in the rotary system directly can not be offered fluid pressure actuator beyond the rotary system from rotary system.
Summary of the invention
The present invention In view of the foregoing proposes, and its purpose is, the Work machine that the hydrodynamic pressure energy that produces in the rotary system directly can be provided to the outer drive device for rotation of rotary system and use this drive device for rotation is provided.
One of the present invention's drive device for rotation has: turning motor, and it accepts the supply of working fluid, drives the load rotation; Rotation is with pump/motor, and it is connected with turning motor by closed circuit, as providing the pump of working fluid to play a role to turning motor, and plays a role as the hydrodynamic pressure motor by means of the working fluid that sprays from turning motor; Position control valve, it has the rotation made from neutral position of closing between pump/motor and the turning motor and direction control position; The rotation dynamoelectric machine, it is used as rotation pump/motoring that the hydrodynamic pressure motor plays a role when carrying out the rotation brake of load, play a role as generator, and the acceptance power supply is carried out drive electric motor and is brought into play function as pump as rotating with pump/motor; Electric storage means, the electric power that its savings provides with dynamoelectric machine from the rotation that plays a role as this generator, and to the rotation that plays a role as motor with electronic/generator powered; Connecting passage outside the system, it is from rotating with the closed circuit working fluid that provides outside rotary system between pump/motor and the position control valve; The connecting passage solenoid valve, it is located at outside the system in the connecting passage, in the position that working fluid can be provided outside rotary system and cut off between the position of flowing and be shifted; The working fluid supplementary units, it is to rotating with the closed circuit additional working fluid between pump/motor and the position control valve.
It is the working fluid make-up pump that the present invention's two makes the working fluid supplementary units in one of the present invention's the drive device for rotation.
The present invention's three Work machine, upper rotating body is arranged to the turning motor that can move by the supply of accepting working fluid, rotate with respect to the bottom runner, apparatus for work is installed on upper rotating body, described Work machine has: the combined type drive unit, and described combined type drive unit has: motor; Dynamoelectric machine, it is played a role as generator by this engine-driving, and accepts the supply of electric power, plays a role as motor; Electric storage means, the electric power that its savings provides from this dynamoelectric machine that plays a role as generator, and to the dynamoelectric machine power supply that plays a role as motor; Main pump, it is driven by at least one side in motor and the dynamoelectric machine, described Work machine also has: the fluid pressure actuator control loop, and its control offers the working fluid of the fluid pressure actuator of bottom runner and apparatus for work from the main pump of combined type drive unit; One of the present invention or two described drive device for rotation, its control offers the working fluid of turning motor, drives the upper rotating body rotation.
The present invention's four Work machine, make the bottom runner in the present invention's the three described Work machines have the supply of accepting working fluid and the motor that travels that moves, apparatus for work is will to utilize swing arm cylinder (boom cylinder) and the swing arm of rotation, the dipper that utilizes dipper cylinder (stick cylinder) and rotate, the scraper bowl that rotates with utilizing the scraper bowl cylinder is connected successively and forms, the control of fluid pressure actuator control loop offers the motor that travels of bottom runner from the main pump of combined type drive unit, the swing arm cylinder of apparatus for work, the working fluid of dipper cylinder and scraper bowl cylinder, outside the system connecting passage with to the swing arm cylinder, the dipper cylinder provides the ejection passage of the main pump of working fluid to be connected with the motor that travels.
The present invention's five Work machine, fluid pressure actuator control loop in the present invention's the four described Work machines is had: swing arm service pump (boom assist pump), the flow of the working fluid of swing arm cylinder is supplied with in its assistance from the main pump of combined type drive unit; The regeneration of energy motor is in the Returning fluid passage that its Returning fluid of being located at the discharge of slave arm cylinder passes through; The swing arm dynamoelectric machine, it is played a role as the generator of powering to the electric storage means of combined type drive unit, and is played a role as motor by means of the electric power that provides from electric storage means by the regeneration of energy motoring; And clutch, it uses dynamoelectric machine to swing arm service pump transferring power from the swing arm that plays a role as motor, and will disconnect with pump with the dynamoelectric machine slave arm as the swing arm that generator plays a role.
The present invention's six Work machine, fluid pressure actuator control loop in the present invention's the five described Work machines is had: communication passage between the loop between dipper and swing arm, communication passage makes the working fluid supply passage of dipper cylinder be communicated with the cylinder head side of swing arm cylinder between this loop; Solenoid valve between dipper and swing arm, it is located between loop between dipper and swing arm in the communication passage, can to the working fluid supply passage of dipper cylinder to the position of the cylinder head side one-way flow of swing arm cylinder and cut off the position of flowing and be shifted.
The present invention's seven Work machine, make the present invention five or six described Work machines in the fluid pressure actuator control loop have: swing arm cylinder working fluid supply passage, it provides working fluid from a main pump to the swing arm cylinder; Scraper bowl cylinder working fluid supply passage, its slave arm cylinder comes out with working fluid supply passage branch, provides working fluid to the scraper bowl cylinder; Dipper cylinder working fluid supply passage, it provides working fluid from other main pumps to the dipper cylinder; The swing arm service pump, it provides working fluid to the swing arm cylinder with the working fluid supply passage with a main pump; Solenoid valve between scraper bowl and swing arm, its be located at the swing arm cylinder with scraper bowl cylinder in the working fluid supply passage with the branching portion of working fluid supply passage and come between the interflow portion of robot arm service pump, can be shifted offering the position of swing arm cylinder and cut off between the position of flowing in the mode of one-way flow to the working fluid of scraper bowl cylinder; Communication passage between the loop between scraper bowl and dipper, communication passage makes the scraper bowl cylinder be communicated with the working fluid supply passage with the dipper cylinder with the working fluid supply passage between this loop; Solenoid valve between scraper bowl and dipper, it is located between loop between scraper bowl and dipper in the communication passage, have can to the working fluid supply passage of scraper bowl cylinder to the position of the working fluid supply passage one-way flow of dipper cylinder with cut off the position of flowing; Communication passage between pump, communication passage makes the ejection passage of swing arm service pump and the ejection channel connection of a main pump between this pump; And solenoid valve between pump, it is located between pump in the communication passage, have can the slave arm service pump the ejection passage to the position of the ejection passage one-way flow of main pump with cut off the position of flowing.
One of according to the present invention, when driving the load rotation, position control valve is controlled at the direction control position, and with the position of connecting passage electromagnetic valve in cut-out, make rotary system independent, on this basis, when being provided by means of the electric power that provides by electric storage means, rotation moves as motor with dynamoelectric machine, to rotate when driving as pump with pump/motor, then can utilize the working fluid pressure that is produced to make the turning motor action, only utilize rotary system to drive the load rotation independently, and when load is stopped, the working fluid that sprays as pump by means of the turning motor that rotates by the inertia motion of load, rotation is moved as the hydrodynamic pressure motor with pump/motor, to rotate and drive as generator with dynamoelectric machine, so can be electric energy with the inertia motion transformation of energy of load, the rotation of load is braked and made electric storage means reclaim electric power efficiently, and, when rotary system does not need a large amount of working fluids, with the connecting passage electromagnetic valve in the position that working fluid can be provided outside rotary system, drive as pump by means of rotating with pump/motor with dynamoelectric machine then from the electric power of electric storage means and as the rotation of motor action, this rotation is accepted replenishing of working fluid with pump/motor by the working fluid supplementary units, pass through connecting passage outside connecting passage solenoid valve and the system simultaneously, working fluid directly can be offered outside the rotary system that needs working fluid, owing to will rotate and drive, thereby correspondingly realized the miniaturization of main pump as pump with pump/motor.
According to the present invention two, can utilize the working fluid make-up pump forcibly working fluid to be added to rotation with the suction side of pump/motor, can utilize rotation to carry out efficiently the outer working fluid supply of rotary system with pump/motor.
According to the present invention three, when the driving upper rotating body is rotated its bottom runner with respect to Work machine, utilization by by means of from the electric power of the electric storage means of combined type drive unit by rotation with dynamoelectric machine driven rotation with working fluid pressure that pump/motor produced, make the turning motor action, can only utilize rotary system to drive the upper rotating body rotation independently, and when upper rotating body is stopped, the working fluid that sprays as pump by means of the turning motor that rotates by the inertia motion of upper rotating body, rotation is moved as the hydrodynamic pressure motor with pump/motor, to rotate and drive as generator with dynamoelectric machine, so can be electric energy with the inertia motion transformation of energy of upper rotating body, rotation to upper rotating body is braked, and make the electric storage means of combined type drive unit reclaim electric power efficiently, and, when rotary system does not need a large amount of working fluids, the rotation of moving as motor will be rotated with pump/motor with dynamoelectric machine and be driven as pump, this rotation is accepted replenishing of working fluid with pump/motor by the working fluid supplementary units, pass through connecting passage outside connecting passage solenoid valve and the system simultaneously, working fluid directly can be offered and need the fluid pressure actuator of the bottom of working fluid runner and apparatus for work control loop, drive as pump owing to will rotate, correspondingly realized the miniaturization of main pump thus with pump/motor.
According to the present invention four, outside the system connecting passage with provide the ejection passage of the main pump of working fluid to be connected to swing arm cylinder, dipper cylinder and the motor that travels, so the rotation that can play a role from main pump with as pump provide sufficient working fluid with pump/motor to these fluid pressure actuators.
According to the present invention five, by cutting off clutch, can the regeneration of energy motor that move be imported power efficiently to the dynamoelectric machine of no-load condition from utilizing the Returning fluid that the slave arm cylinder discharges, the electric power that is produced is put aside in the electric storage means of combined type drive unit the energy efficient ground regeneration that the Returning fluid that the slave arm cylinder is discharged has.And, when connecting clutch, utilization by means of the swing arm that plays a role from the electric power of electric storage means and as motor with electronic/generator drive swing arm service pump, can supply with working fluid to the swing arm cylinder from this swing arm service pump, so the rotation that plays a role except main pump, as pump is with pump/motor, can also supply with a large amount of working fluids to the swing arm cylinder by the slave arm service pump, rise the more rapid of action, further improve operation by swing arm.
According to the present invention six, between dipper that the working fluid supply passage that will arrive the dipper cylinder is communicated with the cylinder head side of swing arm cylinder and the loop between swing arm in the communication passage, be provided with the solenoid valve between dipper and swing arm, so by opening this solenoid valve, guarantee working fluid delivery volume, realize rising the rapid of action, so can improve operation based on the swing arm of swing arm cylinder to the cylinder head side of swing arm cylinder, and, can guarantee working fluid delivery volume to the dipper cylinder by closing this solenoid valve.
According to the present invention seven, be provided with solenoid valve between scraper bowl and swing arm in the working fluid supply passage at the swing arm cylinder, so by opening this solenoid valve, can and come the working fluid delivery volume of robot arm service pump converge and offer the swing arm cylinder from the working fluid delivery volume of main pump, realization is risen the rapid of action based on the swing arm of swing arm cylinder, operation can be improved, and, the high pressure in the scraper bowl cylinder can be guaranteed by closing this solenoid valve.And, be provided with the solenoid valve between scraper bowl and dipper between the loop between scraper bowl and dipper in the communication passage, so by opening this solenoid valve, guarantee working fluid delivery volume to the dipper cylinder, realize the rapid of dipper cylinder action, so can improve operation, and, can guarantee the generation of the high pressure in the scraper bowl cylinder by closing this solenoid valve.In addition, between pump, be provided with the solenoid valve between pump in the communication passage, so by opening this solenoid valve, working fluid spray volume from the swing arm service pump is collaborated with the working fluid delivery volume from a main pump, realize the rapid of dipper cylinder etc., operation can be improved, and, working fluid delivery volume can be guaranteed the swing arm cylinder by closing this solenoid valve.And, solenoid valve between the solenoid valve except between these scraper bowls and swing arm, scraper bowl and dipper, the solenoid valve between pump, by opening the solenoid valve of closing between connecting passage solenoid valve, dipper and swing arm, can improve the degrees of freedom of the combination between the loop that is used for mutually replenishing working fluid, satisfy the requirement of exercises pattern easily.
Description of drawings
Fig. 1 is the circuit diagram of a mode of execution that expression comprises the fluid pressure actuator control loop of the drive device for rotation that the present invention relates to.
Fig. 2 is the side view that the Work machine of this control loop has been installed.
Label declaration
1 Work machine; 2 bottom runneies; 2trL, 2trR are as the motor that travels of fluid pressure actuator; 4 upper rotating body; The 4swh turning motor; 8 apparatus for work; The 8bm swing arm; The 8st dipper; The 8bk scraper bowl; 8bmc is as the swing arm cylinder of fluid pressure actuator; 8stc is as the dipper cylinder of fluid pressure actuator; 8bkc is as the scraper bowl cylinder of fluid pressure actuator; 10 combined type drive units; 11 motors; 17A, 17B main pump; 22 dynamoelectric machines; 23 electric storage means; 25 fluid pressure actuator control loops; 26 regeneration of energy motor; 32 ejection passages; 48 swing arm cylinder working fluid supply passages; 55 Returning fluid passages; 61 dipper cylinder working fluid supply passages; 66 scraper bowl cylinder working fluid supply passages; Communication passage between the loop between 71 dippers and swing arm; Solenoid valve between 72 dippers and swing arm; Communication passage between the loop between 73 scraper bowls and dipper; Solenoid valve between 74 scraper bowls and dipper; 84as swing arm service pump; 85 as the auxiliary working fluid supply passage of using of the swing arm of ejection passage; 87 swing arm dynamoelectric machines; 88 clutches; Solenoid valve between 89 scraper bowls and swing arm; 91 rotation control loops as drive device for rotation; 92,93 is closed circuit; 94 solenoid valves as position control valve; 95 rotation pump/motor; 96 rotation dynamoelectric machines; Connecting passage outside 97 systems; 98 connecting passage solenoid valves; 99 working fluid make-up pumps as the working fluid supplementary units; Communication passage between 101 pumps; Solenoid valve between 102 pumps.
Embodiment
Below, a mode of execution shown in seeing figures.1.and.2 describes the present invention in detail.In addition, fluid and hydrodynamic pressure use oil and oil pressure.
As shown in Figure 2; Work machine 1 is the hydrodynamic pressure excavator; upper rotating body 4 is located on the bottom runner 2 by swivel bearing portion 3 free to rotately; motor and fluid pressure pump equal power device 5, protection operator's operator cabin 6 etc. is installed on this upper rotating body 4, thereby forms body 7.Bottom runner 2 has travel motor 2trL, the 2trR as fluid pressure actuator that is used to drive left and right sides crawler belt, and upper rotating body 4 has the rotation dynamoelectric machine (not shown at Fig. 2) that is used for driving the rotational delay mechanism that is located at swivel bearing portion 3.
Apparatus for work 8 is installed on upper rotating body 4.This apparatus for work 8 is gone up at the carriage (not shown) of upper rotating body 4 and is being engaged swing arm 8bm, dipper 8st and scraper bowl 8bk by pin successively free to rotately, swing arm 8bm is by means of as the swing arm cylinder 8bmc of fluid pressure actuator and rotate, dipper 8st is by means of as the dipper cylinder 8stc of fluid pressure actuator and rotate, and scraper bowl 8bk is by means of as the scraper bowl cylinder 8bkc of fluid pressure actuator and rotate.
Combined type drive unit 10 shown in Figure 1 is connecting the interrupted clutch 12 of rotating power that is used to make from 11 outputs of this motor on motor 11, the input shaft 13 that is connecting power transmitting deice 14 on this clutch 12 is connecting main pump 17A, the 17B of two variable capacity types on the output shaft 15 of power transmitting deice 14.
With respect to these main pumps 17A, 17B being the mode of relation in parallel with motor 11, on the input and output shaft 21 of power transmitting deice 14, connecting dynamoelectric machine 22, these dynamoelectric machine 22 launched machines 11 drive, play a role as generator, and the supply of accepting electric power plays a role as motor.The motor power of this dynamoelectric machine 22 is set less than engine power.On this dynamoelectric machine 22, connecting dynamoelectric machine controller 22c such as inverter.
Control the speed change etc. of interrupted, power transmitting deice 14 of speed, the clutch 12 of motor 11 according to the signal of slave controller (not shown) output.
In fluid pressure actuator control loop 25 shown in Figure 1, the pump channel 31,32 that is connected with the ejiction opening of main pump 17A, 17B, be connected with the solenoid valve 33,34 that moves as electromagnetic proportional valve in being located at the bypass passageways that turns back to case 24, and be connected as the solenoid valve 35 that directly advances valve and move that travels.
Fluid pressure actuator control loop 25 has: travel with control loop 36, its control offers the working fluid of travel motor 2trL, 2trR from main pump 17A, the 17B of combined type drive unit 10; Apparatus for work offers the operation actuator 8bmc that makes apparatus for work 8 actions, the working fluid of 8stc, 8bkc with control loop 37, its control from main pump 17A, the 17B of combined type drive unit 10.
Travelling has solenoid valve 43,44 with control loop 36, control of working fluid travel direction and flow control that the motor that travels that 43,44 pairs of solenoid valves 35 that directly advance valve and move as travelling through associating of this solenoid valve are drawn is supplied with working fluid supply passage 41,42.
Apparatus for work has with control loop 37: swing arm offers the working fluid of swing arm cylinder 8bmc with control loop 45, its control from main pump 17A, the 17B of combined type drive unit 10; Dipper offers the working fluid of dipper cylinder 8stc with control loop 46, its control from main pump 17A, the 17B of combined type drive unit 10; And scraper bowl control loop 47, its control offers the working fluid of scraper bowl cylinder 8bkc from main pump 17A, the 17B of combined type drive unit 10.
Swing arm has solenoid valve 49 with control loop 45, control of working fluid travel direction and flow control that the swing arm cylinder that 49 pairs of solenoid valves 35 that directly advance valve and move as travelling through associating of this solenoid valve are drawn is supplied with working fluid supply passage 48, the working fluid of this solenoid valve 49 is communicated with for row's passage 51,52 with cylinder head side room and the cylinder bar side room of swing arm cylinder 8bmc.
Be provided with in the passage 51 as falling the solenoid valve 53 that prevents valve and bring into play function to arranging at cylinder head side working fluid, with the check valve location of these solenoid valve 53 switching controls to the left side, anti-stopper lever 8bm descends because of deadweight when swing arm stops.And, between two side's working fluids are to row's passage 51,52, be provided with the solenoid valve 54 that plays a role as regeneration valve, when swing arm descends with these solenoid valve 54 switching controls to check valve location, the part of the Returning fluid that the cylinder head side room of slave arm cylinder 8bmc discharges is regenerated in the bar side room.
Be provided with the Returning fluid passage 55 of the Returning fluid shunting that makes slave arm cylinder 8bmc discharge in the case channel side of solenoid valve 49, in side's return passage 56 and the opposing party's return passage 57 of this Returning fluid passage 55, be provided with the flow- ratio control valve 58,59 that control is diverted to the flow-rate ratio of these return passages 56,57.This flow- ratio control valve 58,59 comprises: be located at side's solenoid valve 58 that the flow control in the side's return passage 56 with described regeneration of energy motor 26 is used; Be located at the opposing party's solenoid valve 59 that the flow control in the opposing party's return passage 57 of the upstream side branch of this side solenoid valve 58 is used.
Provide to swing arm cylinder 8bmc on the working fluid supply passage 48 of working fluid at main pump 17A, by connecting the swing arm service pump 84as that the flow of working fluid is helped with working fluid supply passage 85 as the swing arm of ejection passage is auxiliary from combined type drive unit 10.
On the regeneration of energy motor 26 in side's return passage 56 that the Returning fluid of being located at slave arm cylinder 8bmc discharge passes through, connecting swing arm dynamoelectric machine 87, this swing arm is driven by this regeneration of energy motor 26 with dynamoelectric machine 87, play a role as the generator of powering to the electric storage means 23 of combined type drive unit 10, and play a role as motor by means of the electric power that provides from electric storage means 23, this swing arm connects swing arm service pump 84as with dynamoelectric machine 87 by clutch 88.Clutch 88 uses dynamoelectric machine 87 to swing arm service pump 84as transferring power from the swing arm that plays a role as motor, and will disconnect with dynamoelectric machine 87 slave arm service pump 84as as the swing arm that generator plays a role.
And, according to the Returning fluid amount of having carried out side's return passage 56 of flow control by flow- ratio control valve 58,59, the rotational speed of the regeneration of energy motor 26 that control will be moved, the swing arm dynamoelectric machine 87 that utilization is driven by this regeneration of energy motor 26 is to electric storage means 23 power supplies and the storage of combined type drive unit 10.
Preferably these regeneration of energy motor 26 actions when the solenoid valve 49 of travel direction control and flow control is arranged in Fig. 1 right ventricle.Promptly, preferably when swing arm descends, the cylinder head side working fluid of swing arm cylinder 8bmc is communicated with for row's passage 51 with Returning fluid passage 55, by means of the Returning fluid that the cylinder head side of slave arm cylinder 8bmc is discharged, make regeneration of energy motor 26 utilize swing arm deadweight and action with having surplus.
Dipper has solenoid valve 62 with control loop 46, control of working fluid travel direction and flow control that the dipper cylinder that 62 pairs of solenoid valves 35 that directly advance valve and move as travelling through associating of this solenoid valve are drawn is supplied with working fluid supply passage 61, the working fluid of this solenoid valve 62 is communicated with for row's passage 63,64 with cylinder head side room and the cylinder bar side room of dipper cylinder 8stc.And, between two side's working fluids are to row's passage 63,64, be provided with the solenoid valve 65 that plays a role as regeneration valve from cylinder bar side to the cylinder head side, when dipper descends with these solenoid valve 65 switching controls to check valve location, the Returning fluid of discharging from the cylinder bar side room of dipper cylinder 8stc is regenerated the cylinder head side room.
Scraper bowl has solenoid valve 67 with control loop 47, control of working fluid travel direction and flow control that the scraper bowl cylinder that 67 pairs of solenoid valves 35 that directly advance valve and move as travelling through associating of this solenoid valve are drawn is supplied with working fluid supply passage 66, the working fluid of this solenoid valve 67 is communicated with for row's passage 68,69 with cylinder head side room and the cylinder bar side room of scraper bowl cylinder 8bkc.
Between the cylinder head side of dipper cylinder with working fluid supply passage 61 and swing arm cylinder 8bmc, be provided with communication passage 71 between dipper that they are communicated with and the loop between swing arm, be provided with the solenoid valve 72 between dipper and swing arm between the loop between this dipper and swing arm in the communication passage 71, it can be shifted to the position that the position and the cut-out of the cylinder head side one-way flow of swing arm cylinder 8bmc are flowed with working fluid supply passage 61 from the dipper cylinder.
Use between the working fluid supply passage 61 with working fluid supply passage 48 and dipper cylinder at the swing arm cylinder, be provided with communication passage 73 between the scraper bowl that will be communicated with between them and the loop between dipper, be provided with the solenoid valve 74 between scraper bowl and dipper between the loop between this scraper bowl and dipper in the communication passage 73, this solenoid valve 74 has and can use position and the cut-out mobile position of working fluid supply passage 48 to dipper cylinder 8stc one-way flow by the slave arm cylinder.
Use in the working fluid supply passage 48 at the swing arm cylinder, at the scraper bowl cylinder with the branching portion of working fluid supply passage 66 and come between the interflow portion of robot arm service pump 84as, be provided with the solenoid valve 89 between scraper bowl and swing arm, this solenoid valve 89 is shifted with cutting off between the mobile position in the position that the working fluid that flows to scraper bowl cylinder 8bkc is supplied with to swing arm cylinder 8bmc one-way flow ground.
Rotation as drive device for rotation was arranged with control loop 91 and fluid pressure actuator control loop in 25 minutes.This rotation is controlled the working fluid that offers turning motor 4swh with control loop 91, and this turning motor 4swh drives as the upper rotating body 4 of load with reducing gear 4gr by rotation and rotates.
This rotation with control loop 91 turning motor 4swh closed circuit 92,93 in be provided with the solenoid valve 94 that also has flow control function as position control valve, on closed circuit 92,93, connect rotation with pump/motor 95 by this solenoid valve 94.This rotation with pump/motor 95 as providing the pump of working fluid to play a role, and also by means of playing a role as the hydrodynamic pressure motor from the working fluid of turning motor 4swh ejection to turning motor 4swh.
On rotating, connecting rotation dynamoelectric machine 96 with pump/motor 95.The rotation that is connecting inverter etc. in this rotation on dynamoelectric machine 96 is with electronic/engine controller 96c, and this rotation is connected with the electric storage means 23 of combined type drive unit 10 with electronic/engine controller 96c.
Rotation has following function with dynamoelectric machine 96: when the rotation brake of upper rotating body 4, drive with pump/motor 95 by the rotation that plays a role as the hydrodynamic pressure motor, play a role as the generator of powering to the electric storage means 23 of combined type drive unit 10, and, carry out drive electric motor as pump and play a role as rotating with pump/motor 95 by means of the electric power that provides from electric storage means 23.
That is, the electric power that electric storage means 23 savings provide with dynamoelectric machine 96 from this rotation that plays a role as generator, and to the rotation that plays a role as motor dynamoelectric machine 96 power supplies.
With the pipe arrangement between pump/motor 95 and the solenoid valve 94, fluid pressure actuator 2trL, 2trR, 8bmc, 8stc, the 8bkc that draws bottom runner 2 outside rotary system and apparatus for work 8 provides connecting passage 97 outside the system of working fluid from rotation.
Outside this system, be provided with connecting passage solenoid valve 98 in the connecting passage 97, this connecting passage solenoid valve 98 the one-way flow position that working fluid can be provided to fluid pressure actuator 2trL, 2trR, 8bmc, 8stc, the 8bkc of bottom runner 2 and apparatus for work 8, and the position of cut off flowing between adjust degree of opening.
The working fluid make-up pump 99 that is being connected additional working fluid in rotation on the pipe arrangement between pump/motor 95 and the solenoid valve 94 as the working fluid supplementary units.
Between the auxiliary ejection passage 31 of the swing arm of swing arm service pump 84as with a working fluid supply passage 85 and a main pump 17A, be provided with communication passage 101 between the pump of these channel connections, between this pump, be provided with the solenoid valve 102 between pump in the communication passage 101, the solenoid valve 102 between this pump have can slave arm service pump 84as swing arm auxiliary with working fluid supply passage 85 to the position of ejection passage 31 one-way flow of main pump 17A with cut off the position of flowing.
Solenoid valve the 53,54,65,72,74,89,98, the 102nd, the built-in switching valve with flow regulating function of safety check.
Below, the action effect of illustrated mode of execution is described.
When driving upper rotating body 4 is rotated its bottom runner 2 with respect to Work machine 1, solenoid valve 94 is controlled on the direction control position of right rotation or anticlockwise, and utilize by by means of electric power from the electric storage means 23 of combined type drive unit 10, use the working fluid pressure of pump/motor 95 generations with dynamoelectric machine 96 driven rotations by rotation, make turning motor 4swh action, can only utilize rotary system to drive upper rotating body 4 rotations independently, and when the braking that upper rotating body 4 is stopped, close connecting passage solenoid valve 98, by means of the turning motor 4swh that rotates by the inertia motion of upper rotating body 4 as working fluid that pump sprayed, rotation is moved as the hydrodynamic pressure motor load with pump/motor 95, to rotate with dynamoelectric machine 96 and drive as generator, so can be electric energy with the inertia motion transformation of energy of upper rotating body 4, rotatablely moving of upper rotating body 4 braked, and make the electric storage means 23 of combined type drive unit 10 reclaim electric power efficiently.
On the other hand, when turning motor 4swh does not need a large amount of working fluids, make solenoid valve 94 near the neutral position, and make connecting passage solenoid valve 98 near the one-way flow position, the rotation that utilization is moved as motor will be rotated with pump/motor 95 with dynamoelectric machine 96 and be driven as pump, this rotation is accepted replenishing of working fluid with pump/motor 95 by working fluid make-up pump 99, through connecting passage solenoid valve 98 connecting passage 97 ejection working fluids outside system, working fluid directly can be offered the fluid pressure actuator control loop 25 that needs the bottom of working fluid runner 2 and apparatus for work 8 simultaneously.
Promptly, since outside the system connecting passage 97 with provide the ejection passage 32 of the main pump 17B of working fluid to be connected to swing arm cylinder 8bmc, dipper cylinder 8stc and travel motor 2trL, 2trR, so can provide sufficient working fluid to these fluid pressure actuators from main pump 17A, 17B with as rotation pump/motor 95 that pump plays a role.And, because rotation is driven as pump with pump/motor 95, thereby can correspondingly realize the miniaturization of main pump 17A, 17B.
Fluid pressure actuator control loop 25 is at the main pump 17A of control from combined type drive unit 10,17B offers the motor 2trL that travels, 2trR, swing arm cylinder 8bmc, during the working fluid of dipper cylinder 8stc and scraper bowl cylinder 8bkc, by cutting off clutch 88, can be from utilizing the Returning fluid that slave arm cylinder 8bmc discharges the regeneration of energy motor 26 that moves, swing arm to no-load condition is imported power efficiently with dynamoelectric machine 87, the electric power that is produced is put aside in the electric storage means 23 of combined type drive unit 10 the energy efficient ground regeneration that the Returning fluid that slave arm cylinder 8bmc is discharged has.
Particularly when the swing arm 8bm of apparatus for work 8 falls because of deadweight, the energy that the Returning fluid that can utilize swing arm to discharge from the cylinder head side of regeneration of energy motor 26 absorption slave arm cylinder 8bmc with dynamoelectric machine 87 has, and savings is in the electric storage means 23 of combined type drive unit 10.
And, when having connected clutch 88, utilization by means of the swing arm that plays a role from the electric power of the electric storage means 23 of combined type drive unit 10 and as motor with dynamoelectric machine 87, drive swing arm service pump 84as, can supply with working fluid to swing arm cylinder 8bmc from this swing arm service pump 84as, so except main pump 17A, 17B, and the rotation that plays a role as pump is with outside pump/motor 95, can also supply with working fluid to swing arm cylinder 8bmc by slave arm service pump 84as, can provide a large amount of working fluids from 4 pumps, rise the further rapid of action by swing arm, further improve operation.
And, the Returning fluid that makes slave arm cylinder 8bmc be discharged to Returning fluid passage 55 is diverted to side's return passage 56 and the opposing party's return passage 57, utilize flow-ratio control valve 58, the flow-rate ratio of 59 these shuntings of control, utilize by this flow- ratio control valve 58,59 have controlled side's Returning fluid of flow, make 26 actions of regeneration of energy motor, utilize this regeneration of energy motor 26 to drive swing arm dynamoelectric machine 87, electric storage means 23 power supplies to combined type drive unit 10, so the moment by the Returning fluid generation of robot arm cylinder 8bmc is always played the flow-rate ratio that increase gradually is diverted to regeneration of energy motor 26 sides, can prevent to produce and impact, and, can realize the stable action of swing arm cylinder 8bmc by suppressing the rapid load change of swing arm cylinder 8bmc.
Promptly, when the swing arm 8bm of apparatus for work 8 falls because of deadweight, the Returning fluid of discharging by the cylinder head side that increases slave arm cylinder 8bmc gradually flows to the flow-rate ratio of regeneration of energy motor 26 sides, regeneration of energy motor 26 can successfully absorb the energy that Returning fluid has, and pass through the rapid load change of the cylinder head side of inhibition swing arm cylinder 8bmc, the action that falls that can stablize swing arm 8bm based on deadweight.
On the random position that flow- ratio control valve 58,59 can be arranged to make side's solenoid valve 58 and the opposing party's solenoid valve 59 separately be arranged on side's return passage 56 and the opposing party's return passage 57, and the degree of opening of independent each other unconnectedly control one side's return passage 56 and the opposing party's return passage 57, freely control flows is to the flow-rate ratio and the flow of the Returning fluid of regeneration of energy motor 26 sides.
And, be provided with solenoid valve 89 between scraper bowl and swing arm in working fluid supply passage 48 at the swing arm cylinder, so by opening this solenoid valve 89, the working fluid delivery volume of My World main pump 17A and come the working fluid delivery volume of robot arm service pump 84as to converge to offer swing arm cylinder 8bmc in the future, can realize rapid based on the swing arm vertical motion of swing arm cylinder 8bmc, improve operation, and, can guarantee the high pressure among the scraper bowl cylinder 8bkc by closing this solenoid valve 89.
In addition, between dipper that the dipper cylinder is communicated with the cylinder head side of working fluid supply passage 61 and swing arm cylinder 8bmc and the loop between swing arm in the communication passage 71, be provided with the solenoid valve 72 between dipper and swing arm, so by this solenoid valve 72 is controlled on the one-way flow position, except the working fluid of the cylinder head side that offers swing arm cylinder 8bmc from a main pump 17A and swing arm service pump 84as through the left chamber of solenoid valve 49, also can offer the cylinder head side of swing arm cylinder 8bmc through this solenoid valve 72 from the working fluid of other main pumps 17B, realization is rapid based on the swing arm vertical motion of swing arm cylinder 8bmc, so can improve operation.On the other hand, by closing this solenoid valve 72, can guarantee the working fluid delivery volume to dipper cylinder 8stc from other main pumps 17B.
And, be provided with the solenoid valve 74 between scraper bowl and dipper between the loop between scraper bowl and dipper in the communication passage 73, so by this solenoid valve 74 is opened to the one-way flow position, and with solenoid valve 72,89 close, can make from side's main pump 17A and offer the working fluid of swing arm cylinder 8bmc and the working fluid interflow that offers dipper cylinder 8stc from the opposing party's main pump 17B, realization dipper cylinder 8stc's is rapid, and by the solenoid valve between scraper bowl and dipper 74 cuts out, and open solenoid valve 72,89, can make the working fluid that offers dipper cylinder 8stc from the opposing party's main pump 17B, with from side's main pump 17A through working fluid supply passage 48, solenoid valve 89, the left chamber of solenoid valve 49 offers the working fluid interflow of the cylinder head side of swing arm cylinder 8bmc, thereby can realize the rapid of swing arm vertical motion, can improve operation.
In addition, the solenoid valve between scraper bowl and dipper 74 is being controlled at off-position, swing arm is separated when independent with control loop 46 with control loop 45 and dipper, swing arm system and dipper system can cut off, respectively pilot pressure.In addition, by solenoid valve 89 cutting out, can guarantee the high pressure of scraper bowl cylinder 8bkc with this solenoid valve 74.
And, between pump, be provided with the solenoid valve 102 between pump in the communication passage 101, so when not needing swing arm rising flow, by opening this solenoid valve 102, can make working fluid discharge capacity and the working fluid delivery volume interflow of coming My World main pump 17A from swing arm service pump 84as, operation can be improved, and, working fluid delivery volume can be guaranteed swing arm cylinder 8bmc by closing this solenoid valve 102.
And, solenoid valve 89 between solenoid valve 74, scraper bowl and swing arm between solenoid valve 72, scraper bowl and dipper except between these dippers and swing arm, the solenoid valve 102 between pump, can also close by connecting passage solenoid valve 98 is opened, improve the degrees of freedom of the combination between the loop be used for replenishing mutually working fluid, can easily satisfy the requirement of exercises pattern.
By solenoid valve 72,89,102 is closed on the off-position, swing arm can be cut off from main pump 17A, 17B fully with control loop 45.
Like this, according to the combination of the switching state of solenoid valve 72,74,89,98,102, the degrees of freedom of combination improves, and it is flexible that the change of system architecture becomes.And, can utilize combined system to improve the fuel cost efficient of motor 11.
The present invention goes for rotary power machineries such as hydrodynamic pressure excavator.
Claims (7)
1. a drive device for rotation is characterized in that, this drive device for rotation has:
Turning motor, it accepts the supply of working fluid, drives the load rotation;
Rotation is with pump/motor, and it is connected with turning motor by closed circuit, as providing the pump of working fluid to play a role to turning motor, and plays a role as the hydrodynamic pressure motor by means of the working fluid that sprays from turning motor;
Position control valve, it has the rotation made from neutral position of closing between pump/motor and the turning motor and direction control position;
The rotation dynamoelectric machine, it is used as rotation pump/motoring that the hydrodynamic pressure motor plays a role when carrying out the rotation brake of load, play a role as generator, and the acceptance power supply is carried out drive electric motor and is brought into play function as pump as rotating with pump/motor;
Electric storage means, the electric power that its savings provides with dynamoelectric machine from this rotation that plays a role as generator, and to the rotation that plays a role as motor with electronic/generator powered;
Connecting passage outside the system, it is from rotating with the closed circuit working fluid that provides outside rotary system between pump/motor and the position control valve;
The connecting passage solenoid valve, it is located at outside the system in the connecting passage, in the position that working fluid can be provided outside rotary system and cut off between the position of flowing and be shifted; And
The working fluid supplementary units, it is to rotating with the closed circuit additional working fluid between pump/motor and the position control valve.
2. drive device for rotation according to claim 1 is characterized in that, the working fluid supplementary units is the working fluid make-up pump.
3. Work machine, upper rotating body are arranged to the turning motor that can move by the supply of accepting working fluid, rotate with respect to the bottom runner, and apparatus for work is installed on upper rotating body, it is characterized in that described Work machine has:
The combined type drive unit, described combined type drive unit has: motor; Dynamoelectric machine, it is played a role as generator, and is accepted the supply of electric power by this engine-driving, plays a role as motor; Electric storage means, the electric power that its savings provides from this dynamoelectric machine that plays a role as generator, and to the dynamoelectric machine power supply that plays a role as motor; And main pump, it is driven by at least one side in motor and the dynamoelectric machine;
The fluid pressure actuator control loop, its control offers the working fluid of the fluid pressure actuator of bottom runner and apparatus for work from the main pump of combined type drive unit; And
Claim 1 or 2 described drive device for rotation, its control offers the working fluid of turning motor, drives the upper rotating body rotation.
4. Work machine according to claim 3 is characterized in that,
The bottom runner has the supply of accepting working fluid and the motor that travels that moves,
Apparatus for work with the swing arm that utilizes the swing arm cylinder and rotate, utilize the dipper cylinder and scraper bowl that the dipper that rotates rotates with utilizing the scraper bowl cylinder is connected successively and constitutes,
Fluid pressure actuator control loop control offers the working fluid of swing arm cylinder, dipper cylinder and scraper bowl cylinder of the motor that travels, the apparatus for work of bottom runner from the main pump of combined type drive unit,
Outside the system connecting passage with provide the ejection passage of the main pump of working fluid to be connected to swing arm cylinder, dipper cylinder and the motor that travels.
5. Work machine according to claim 4 is characterized in that, the fluid pressure actuator control loop has:
The swing arm service pump, its assistance offers the flow of the working fluid of swing arm cylinder from the main pump of combined type drive unit;
The regeneration of energy motor is in the Returning fluid passage that its Returning fluid of being located at the discharge of slave arm cylinder passes through;
The swing arm dynamoelectric machine, it is played a role as the generator of powering to the electric storage means of combined type drive unit, and is played a role as motor by means of the electric power that provides from electric storage means by the regeneration of energy motoring; And
Clutch, it uses dynamoelectric machine to swing arm service pump transferring power from the swing arm that plays a role as motor, and the swing arm that will play a role as generator disconnects with pump with the dynamoelectric machine slave arm.
6. Work machine according to claim 5 is characterized in that, the fluid pressure actuator control loop has:
Communication passage between the loop between dipper and swing arm, communication passage makes the working fluid supply passage of dipper cylinder be communicated with the cylinder head side of swing arm cylinder between this loop;
Solenoid valve between dipper and swing arm, it is located between loop between dipper and swing arm in the communication passage, can to the working fluid supply passage of dipper cylinder to the position of the cylinder head side one-way flow of swing arm cylinder and cut off the position of flowing and be shifted.
7. according to claim 5 or 6 described Work machines, it is characterized in that the fluid pressure actuator control loop has:
Swing arm cylinder working fluid supply passage, it provides working fluid from a main pump to the swing arm cylinder;
Scraper bowl cylinder working fluid supply passage, its slave arm cylinder comes out with working fluid supply passage branch, provides working fluid to the scraper bowl cylinder;
Dipper cylinder working fluid supply passage, it provides working fluid from other main pumps to the dipper cylinder;
The swing arm service pump, it provides working fluid to the swing arm cylinder with the working fluid supply passage with a main pump;
Solenoid valve between scraper bowl and swing arm, its be located at the swing arm cylinder with scraper bowl cylinder in the working fluid supply passage with the branching portion of working fluid supply passage and come between the interflow portion of robot arm service pump, in the position that the working fluid to the scraper bowl cylinder can be offered the swing arm cylinder in the mode to swing arm cylinder one-way flow with cut off between the position of flowing and be shifted;
Communication passage between the loop between scraper bowl and dipper, communication passage makes the scraper bowl cylinder be communicated with the working fluid supply passage with the dipper cylinder with the working fluid supply passage between this loop;
Solenoid valve between scraper bowl and dipper, it is located between loop between scraper bowl and dipper in the communication passage, have can to the working fluid supply passage of scraper bowl cylinder to the position of the working fluid supply passage one-way flow of dipper cylinder with cut off the position of flowing;
Communication passage between pump, communication passage makes the ejection passage of swing arm service pump and the ejection channel connection of a main pump between this pump; And
Solenoid valve between pump, it is located between pump in the communication passage, have can the slave arm service pump the ejection passage to the position of the ejection passage one-way flow of main pump with cut off the position of flowing.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP166174/2005 | 2005-06-06 | ||
| JP2005166181A JP2006336849A (en) | 2005-06-06 | 2005-06-06 | Turning drive device |
| JP2005166174A JP2006336844A (en) | 2005-06-06 | 2005-06-06 | Working machine |
| JP166181/2005 | 2005-06-06 | ||
| PCT/JP2006/307534 WO2006132031A1 (en) | 2005-06-06 | 2006-04-10 | Drive device for rotation, and working machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1969129A true CN1969129A (en) | 2007-05-23 |
| CN1969129B CN1969129B (en) | 2010-11-24 |
Family
ID=37557564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006800003183A Expired - Fee Related CN1969129B (en) | 2005-06-06 | 2006-04-10 | Working machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2006336844A (en) |
| CN (1) | CN1969129B (en) |
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| Publication number | Publication date |
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| CN1969129B (en) | 2010-11-24 |
| JP2006336844A (en) | 2006-12-14 |
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