CN107076183A - The oil pressure actuated systems of building machinery - Google Patents
The oil pressure actuated systems of building machinery Download PDFInfo
- Publication number
- CN107076183A CN107076183A CN201580063964.3A CN201580063964A CN107076183A CN 107076183 A CN107076183 A CN 107076183A CN 201580063964 A CN201580063964 A CN 201580063964A CN 107076183 A CN107076183 A CN 107076183A
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- China
- Prior art keywords
- rotary shaft
- motor
- pump
- swing arm
- icgcii
- Prior art date
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Classifications
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
-
- 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
- F15B21/14—Energy-recuperation means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
Abstract
A kind of oil pressure actuated systems of building machinery, possess：Working oil is supplied to rotation motor and there is the first pump of the first rotary shaft；Working oil is supplied to swing arm cylinder and with the second pump of the second rotary shaft linked with the first rotary shaft；With the engine with the first rotary shaft or the output shaft of the second rotary shaft link；The driven gear of the first rotary shaft and/or the second rotary shaft is installed between the first pump and the second pump；The drive gear engaged with driven gear；Me icgcii motor with the 3rd rotary shaft that power is transmitted to drive gear；And the swing arm for guiding the working oil that slave arm cylinder is discharged when rotating with regeneration switching valve and declining swing arm guided during rotational deceleration from the working oil of rotation motor discharge to me icgcii motor to me icgcii motor uses at least one party in regenerating switching valve.
Description
Technical field
The present invention relates to the oil pressure actuated systems of building machinery.
Background technology
In the building machinery as hydraulic excavator or oil pressure crane, each portion is driven by oil pressure actuated systems.
In such oil pressure actuated systems, energy is regenerated using the working oil that storage tank is back to from actuator.
For example, Patent Document 1 discloses being formed as the structure of regeneration energy in the swing arm decline of hydraulic excavator
Oil pressure actuated systems.The oil pressure actuated systems include：The pump of working oil is supplied to swing arm cylinder；The engine of transfer tube；And again
Raw motor, the working oil of slave arm cylinder discharge is directed to the me icgcii motor when swing arm declines.These pumps, engine and regeneration
Motor configurations are on coaxially.In more detail, the rotary shaft of the output shaft of engine and pump links, the rotary shaft and me icgcii motor of pump
Rotary shaft link.
Prior art literature：
Patent document：
Patent document 1:Japanese Unexamined Patent Publication 2008-128478 publications.
The content of the invention
Problems to be solved by the invention：
In the oil pressure actuated systems of building machinery, as the pump that working oil is supplied to actuator, such as commonly using with identical
Two pumps of the capacity of degree.In this case, when two parallels connection of pumps are arranged, in order to from the pump being directly connected to engine to another
One pump transmits power, it is necessary to which multiple larger gears, cost, weight and space turn into problem.Therefore, it is desirable to which two pumps are matched somebody with somebody
It is placed on coaxial.
However, being configured in me icgcii motor and pump the oil pressure actuated systems as disclosed in patent document 1 on coaxial
In structure, if further making other pumps between such as pump and me icgcii motor, from engine to me icgcii motor untill
Length.Therefore, if without at least larger space in one direction, can not just set their assembly, assembly
Suffered restraints to the carrying of building machinery.
Therefore, it is an object of the invention to provide one kind multiple pumps can be configured at it is coaxial upper, while shorten engine,
The oil pressure actuated systems of the building machinery of the total length of the assembly of multiple pumps and me icgcii motor.
The means solved the problems, such as：
In order to solve the above problems, the oil pressure actuated systems of building machinery of the invention possess：Working oil is supplied to rotation motor
And the first pump with the first rotary shaft；Working oil is supplied to swing arm cylinder and with the second rotation linked with first rotary shaft
Second pump of rotating shaft；With the engine with first rotary shaft or the output shaft of second rotary shaft link；Described
The driven gear of first rotary shaft and/or second rotary shaft is installed between first pump and second pump；With institute
State the drive gear of driven gear engagement；Me icgcii motor with the 3rd rotary shaft that power is transmitted to the drive gear；With
And, the rotation that the working oil discharged during rotational deceleration from the rotation motor is guided to the me icgcii motor is switched with regeneration
The swing arm that valve and the working oil discharged from the swing arm cylinder when swing arm is declined guides to the me icgcii motor is with regenerating switching valve
In at least one party.
According to said structure, the torque generated during rotational deceleration and/or when swing arm declines in me icgcii motor passes through sliding tooth
Wheel and driven gear are transmitted to the rotary shaft of the first pump and the second pump.Thus, it is possible to auxiliary using the energy reclaimed by me icgcii motor
Help the driving of the first pump and the second pump（The regeneration of energy）.Driven gear is additionally, since to be between the first pump and the second pump, because
Me icgcii motor can be configured at the side of the first pump and/or the second pump by this.Therefore, it is possible to shorten engine, the first pump and
The total length of the assembly of two pumps and me icgcii motor.
The number of teeth of the drive gear can be fewer than the number of teeth of the driven gear.According to the structure, from drive gear court
Reduced to driven gear rotary speed.Therefore, it is possible to use small-sized hydraulic motor as me icgcii motor according to its speed reducing ratio,
Cost can be reduced.
Also can between the 3rd rotary shaft of the me icgcii motor and the drive gear, be configured with can realize from
The one-way clutch of the unidirectional power transmission of drive gear described in 3rd axial rotary., can be not according to the structure
When regenerating energy, prevent from making because of the power of engine the 3rd rotary shaft of me icgcii motor to rotate.Thereby, it is possible to further suppression
The waste of energy.
Also the motor that the me icgcii motor is the variable capacity type that tilt angle is changed, above-mentioned oil pressure actuated systems tool can be enable
It is standby：Adjust the me icgcii motor adjuster of the tilt angle of the me icgcii motor；And, by it is described rotation with regeneration switching valve to
During the me icgcii motor guiding working oil, with the bigger shape of the tilt angle of the rotary speed of the rotary body me icgcii motor
Formula, controls the control device of the regeneration adjuster.According to the structure, appropriate energy corresponding with rotary speed can be carried out
Reclaim.
Also the motor that the me icgcii motor is the variable capacity type that tilt angle is changed, above-mentioned oil pressure actuated systems tool can be enable
It is standby：Adjust the me icgcii motor adjuster of the tilt angle of the me icgcii motor；And, by the swing arm with regeneration switching valve to
During the me icgcii motor guiding working oil, the tilt angle of the first pilot me icgcii motor exported with slave arm operation valve
Bigger form, controls the control device of the me icgcii motor adjuster.According to the structure, the speed declined with swing arm can be carried out
The corresponding appropriate energy regenerating of degree.
Also the driven gear can be made to link first rotary shaft and second rotary shaft.According to the structure, it is not required to
Link the connector of the first rotary shaft and the second rotary shaft, number of components can be cut down.
Invention effect：
In accordance with the invention it is possible to multiple pumps are configured on coaxial, while shortening the group of engine, multiple pumps and me icgcii motor
Fill the total length of body.
Brief description of the drawings
Fig. 1 is the summary construction diagram of the oil pressure actuated systems according to an embodiment of the invention；
Fig. 2 is the side view of the hydraulic excavator of an example as building machinery；
Fig. 3 is the sectional view of a part for the assembly of engine, the first pump and the second pump and me icgcii motor.
Embodiment
Fig. 1 shows the oil pressure actuated systems 1 of the building machinery according to an embodiment of the invention, and Fig. 2 shows to be equipped with this
The building machinery 10 of oil pressure actuated systems 1.Building machinery 10 shown in Fig. 2 is hydraulic excavator, but the present invention is also applicable to
Other building machineries such as oil pressure crane.
In oil pressure actuated systems 1, include swing arm cylinder 11, dipper cylinder 12 and the scraper bowl shown in Fig. 2 as oil pressure actuator
Cylinder 13, and including the rotation motor 14 shown in Fig. 1 and pair of right and left driving motors (not shown).Also, oil pressure actuated systems 1 are wrapped
Include：The first pump 21 of working oil is supplied to multiple actuators comprising rotation motor 14；Held with to comprising the multiple of swing arm cylinder 11
Row device supplies the second pump 24 of working oil.In addition, in Fig. 1, in order to simplify drawing, eliminating except rotation motor 14 and swing arm cylinder 11
Actuator in addition.
In this embodiment, building machinery 10 is from running type hydraulic excavator, but in building machinery 10 to be equipped on
In the case of the hydraulic excavator of ship, including the rotary body of driver's cabin is rotatably supported in hull.
First pump 21 and the second pump 24 are configured on coaxial with engine 15, and are driven by engine 15.In more detail,
First pump 21 has the first rotary shaft 22, and the second pump 24 has the second rotary shaft 25, and engine 15 has output shaft 16.In this reality
Apply in form, the first rotary shaft 22 of the first pump 21 and the second rotary shaft 25 of the second pump 24 are connected by driven gear 35 described later
Knot.Also, in this embodiment, the first rotary shaft 22 of the first pump 21 and the output shaft 16 of engine 15 are by illustrating omission
Connector links, but the second rotary shaft 25 and the output shaft 16 of engine 15 of the second pump 24 can also linked（In other words, also
It can be arranged according to the order of engine 15, the second pump 24, the first pump 21）.
First pump 21 and the second pump 24 each be the variable capacity type that tilt angle can be changed pump（Inclined rotor pump or inclined shaft
Pump）.The tilt angle of first pump 21 is adjusted by the first pump control mechanism 23, and the tilt angle of the second pump 24 passes through the second pump control mechanism 26
Regulation.The discharge flow of first pump 21 and the second pump 24 can be with negative control（negative control）Mode is controlled,
Can be with positive control（positive control）Mode is controlled.That is, the first pump control mechanism 23 and the second pump control mechanism 26
It can be operated, can also be operated by electric signal by oil pressure.
First flow path 41 extends to storage tank from the first pump 21, and second flow path 61 extends to storage tank from the second pump 24.In addition, figure
In 1, the upstream part of stream 41,61 is only drawn.
In first flow path 41, multiple control valves including rotary control valve 44 are configured with（First control valve group）.First
Parallel cartridges 42 carry out branch from first flow path 41, by first parallel cartridges 42 to all control valves in first flow path 41
Guide working oil.Similarly, in second flow path 61, multiple control valves including boom control valves 64 are configured with（Second control
Valve group）.Second parallel cartridges 62 carry out branch from second flow path 61, by second parallel cartridges 62 in second flow path 61
All control valves guide working oil.
Rotary control valve 44 controls the supply and discharge of the working oil to rotation motor 14.Specifically, rotary control valve
44 are connected by anticlockwise feeding pipe 51 and right rotation feeding pipe 52 with rotation motor 14.Also, connecting on rotary control valve 44
It is connected to storage tank pipeline 43.
Anticlockwise feeding pipe 51 and right rotation feeding pipe 52 are connected each other by bridge joint road 53.Bridge on road 53 mutually
Inversely it is provided with a pair of relief valves 54.Between anticlockwise feeding pipe 51 and right rotation feeding pipe 52, respectively let out with bypassing
The form of pressure valve 54 is provided with bypass 55, each bypass 55 and is provided with check-valves 56.Bridge in road 53 between relief valve 54
Part be connected with storage tank pipeline 57.
The pilot port of rotary control valve 44 is grasped by anticlockwise pilot line 46 and right rotation pilot line 47 with rotation
Make valve 45 to connect.Rotating pilot valve 45 includes action bars, correspondingly sized to the output of rotary control valve 44 and the operational ton of action bars
First pilot.
Boom control valves 64 control the supply and discharge of the working oil to swing arm cylinder 11.Specifically, boom control valves 64
Feeding pipe 68 is risen by swing arm and swing arm declines feeding pipe 69 and is connected with swing arm cylinder 11.Also, on boom control valves 64
It is connected with storage tank pipeline 63.
The pilot port of boom control valves 64 declines pilot line 67 with moving by swing arm upward leader pipeline 66 and swing arm
Arm operation valve 65 is connected.Swing arm operation valve 65 includes action bars, exports corresponding to the operational ton of action bars to boom control valves 64
The first pilot of size.
Moreover, in this embodiment, when oil pressure actuated systems 1 are formed to regeneration rotational deceleration and swing arm declines
When energy structure.As structure for this purpose, oil pressure actuated systems 1 include me icgcii motor 27, rotation and cut with regeneration
Change valve 73 and swing arm regeneration switching valve 74.But, it also can only set rotation to be cut with regeneration switching valve 73 and swing arm with regeneration
Either one in valve 74 is changed, so that energy when only regenerating rotational deceleration or when swing arm declines.
On the structure of rotary side, between anticlockwise feeding pipe 51 and right rotation feeding pipe 52, being provided with is used for
Select the switching valve 71 of any of which.Switching valve 71 is magnetic valve in this embodiment（solenoid valve）,
It may also be simple high selector relay.Switching valve 71 is connected by rotating regeneration pipeline 72 with me icgcii motor 27.Moreover, rotation
The midway for turning regeneration pipeline 72 is provided with rotation regeneration switching valve 73.
Rotation regeneration switching valve 73 can block the non-recycled position of rotation regeneration pipeline 72 and open rotation regeneration
Pipeline 72（In other words, it is the upstream part and downstream of rotating regeneration pipeline 72 is partially communicating）Between recovery position
Switch over.Switching valve 71 and rotation regeneration switching valve 73 are controlled by control device 8.In addition, in Fig. 1, for simplification figure
Face, only draws the control line of a part.
The guide exported during for detecting anticlockwise operation from rotating pilot valve 45 is provided with anticlockwise pilot line 46
It is provided with the first pressure meter 83 of pressure, right rotation pilot line 47 defeated from rotating pilot valve 45 during right rotation operation for detecting
The second pressure meter 84 of the first pilot gone out.In addition, in the case where switching valve 71 is simple high selector relay, being used as rotation
Pressure gauge, can be using the structure for being formed to optionally detect the first pilot of higher side in rotation pilot line 46,47
A pressure gauge.
Control device 8 is when carrying out anticlockwise operation（That is, when the first pilot that first pressure meter 83 is detected is more than zero）, will cut
Change valve 71 and switch to the first position for connecting the right rotation feeding pipe 52 of discharge side with regeneration pipeline 72, carry out right rotation
During operation（That is, when the first pilot that second pressure meter 84 is detected is more than zero）, switching valve 71 is switched to the anticlockwise of discharge side
The second place that feeding pipe 51 is connected with regeneration pipeline 72.
Also, control device 8 is when anticlockwise is slowed down（That is, when the first pilot that first pressure meter 83 is detected is reduced）And dextrorotation
When turning to slow down（That is, when the first pilot that second pressure meter 84 is detected is reduced）, rotation regeneration switching valve 73 is switched into recovery position
Put, when anticlockwise is slowed down and right rotation deceleration when in addition to, by rotation regenerate switching valve 73 maintain non-recycled position.That is,
When anticlockwise is slowed down and right rotation deceleration when, rotation regeneration switching valve 73 by the working oil discharged from rotation motor 14 to
Me icgcii motor 27 is guided.
On the structure of swing arm side, swing arm regeneration switching valve 74 is arranged at the midway that swing arm rises feeding pipe 68.It is dynamic
Arm regeneration switching valve 74 is connected by swing arm regeneration pipeline 75 with me icgcii motor 27.In this embodiment, regenerating tube is rotated
Road 72 and the downstream part of swing arm regeneration pipeline 75 meet one another and constitute one and converge road.
Swing arm regeneration switching valve 74 can block the non-recycled position of swing arm regeneration pipeline 75 and open swing arm regeneration
Pipeline 75（In other words, the part that swing arm is risen to the side of swing arm cylinder 11 of feeding pipe 68 is connected with swing arm regeneration pipeline 75
's）Switched between recovery position.Swing arm regeneration switching valve 74 is controlled by control device 8.
Swing arm, which declines, is provided with what slave arm operation valve 65 during for detecting swing arm step-down operation was exported on pilot line 67
3rd pressure gauge 85 of first pilot.On the other hand, in swing arm rises feeding pipe 68, cut in swing arm cylinder 11 and swing arm with regeneration
Changing between valve 74, being provided with the 4th pressure gauge of the pressure of the working oil of the discharge of slave arm cylinder 11 during for detecting that swing arm declines
86。
Control device 8 is when swing arm declines（That is, when the first pilot of the 3rd pressure gauge 85 detection is more than zero）, by swing arm with again
Raw switching valve 74 switches to recovery position, when swing arm declines in addition to, swing arm is regenerated into switching valve 74 and maintains non-recycled
Put.That is, when swing arm declines, the working oil that swing arm regeneration switching valve 74 discharges slave arm cylinder 11 draws to me icgcii motor 27
Lead.
In this embodiment, me icgcii motor 27 is the motor for the variable capacity type that tilt angle can be changed（Swash plate motor or
Person's inclined-axis motors）.The tilt angle of me icgcii motor 27 is adjusted by me icgcii motor adjuster 29.In this embodiment, horse is regenerated
Operated up to adjuster 29 by electric signal.That is, me icgcii motor adjuster 29 is controlled by control device 8.For example, in me icgcii motor 27
In the case of swash plate motor, me icgcii motor adjuster 29 can change the swash plate link acted on motor with electrical form
Spool（spool）Oil pressure adjuster or the YE that links with the swash plate of motor.
First tachometer 81 of rotating speed of the control device 8 with determining engine 15 is connected.For example, being regenerated by rotation
When switching valve 73 guides the rotational deceleration of working oil to me icgcii motor 27, the control of control device 8 me icgcii motor adjuster 29 with into
For following tilt angle：The flow that is enough to absorb during according to certain engine speed calculated by the constant rotational speed of rotation motor 14 verts
Angle.
Or, the rotary speed that can also make control device 8 includes the rotary speed of the rotary body of driver's cabin with detection is detected
Device（It is not shown）Connection.As rotary speed detector, the tachometer for the rotating speed for determining rotation motor 14 can be used, also can be used
It is arranged at the accelerometer of driver's cabin.Moreover, using regeneration switching valve 73 to guide working oil to me icgcii motor 27 by rotating
During rotational deceleration, control device 8 is in the bigger form of the tilt angle of the faster me icgcii motor 27 of the rotary speed of rotary body, and control is again
Raw motor actuator 29.Thereby, it is possible to carry out appropriate energy regenerating corresponding with rotary speed.
On the other hand, when guiding the swing arm of working oil to decline to me icgcii motor 27 with regeneration switching valve 74 by swing arm,
The first pilot that control device 8 is exported with slave arm operation valve 65（That is, swing arm declines the pressure of pilot line 67）Bigger regeneration horse
Up to the bigger form of 27 tilt angle, control me icgcii motor adjuster 29.It is corresponding to the speed of swing arm decline thereby, it is possible to carry out
Appropriate energy regenerating.
Me icgcii motor 27 has the 3rd rotary shaft 28.In this embodiment, during rotational deceleration and swing arm decline when again
The torque generated in raw motor 27, one-way clutch is passed through from the 3rd rotary shaft 28（one way clutch）31st, relay axis 32,
Drive gear 33, idler gear（idler gear）34 and the first rotary shaft 22 and second from driven gear 35 to the first pump 21
Second rotary shaft 25 of pump 24 is transmitted.Thereby, it is possible to aid in the first pump 21 and second using the energy reclaimed by me icgcii motor 27
The driving of pump 24（The regeneration of energy）.Hereinafter, reference picture 3 describes its power transmission structure in detail.
In this embodiment, me icgcii motor 27 is in the side of the first pump 21 so that the rotary shaft 22,28 of both sides is mutually flat
Capable form configuration.But, it can also make me icgcii motor 27 in the side of the second pump 24 so that the rotary shaft 25,28 of both sides is mutually flat
Capable form configuration.
First pump 21 has the housing 21a for accommodating the pump machanism that diagram is omitted.The side of the second pump 24 of first rotary shaft 22
End is supported in housing 21a by bearing 21b.Similarly, the second pump 24 has the housing for accommodating the pump machanism that diagram is omitted
24a.The end of the side of the first pump 21 of second rotary shaft 25 is supported in housing 24a by bearing 24b.In housing 21a and housing 24a
Between, form the gear space of oriented side opening.
Driven gear 35 is configured between the first pump 21 and the second pump 24.In this embodiment, driven gear 35 is installed
In in the first rotary shaft 22 of the first pump 21 and the second rotary shaft 25 of the second pump 24.That is, driven gear 35, which has, crosses over first
The central part of the rotary shaft 25 of rotary shaft 22 and second and the tubular of extension, plays and links the first rotary shaft 22 and the second rotary shaft 25
Effect.
Me icgcii motor 27 has the housing 27a for accommodating the motor configuration that diagram is omitted.Accommodate the shell 91 of drive gear 33
It is integrally formed on housing 27a.Drive gear 33 is supported in shell 91 by bearing 36.
Power is transmitted from the 3rd rotary shaft 28 of me icgcii motor 27 to drive gear 33.In this embodiment, relay axis
32 are integrally formed in drive gear 33, between the rotary shaft 28 of relay axis 32 and the 3rd, are configured with one-way clutch 31.It is single
The unidirectional power transmission from the 3rd rotary shaft 28 to drive gear 33 can be realized to clutch 31.
Drive gear 33 is engaged by idler gear 34 with driven gear 35.Accommodate and set on the shell 91 of drive gear 33
There are a pair of protrusion tabs 92 in the gear space between above-mentioned housing 21a, 24a.Rotary shaft 93 is set up in these protrusion tabs 92
On, idler gear 34 is installed in the rotary shaft 93 by bearing 37.
In this embodiment, the number of teeth of the gear ratio driven gear 35 of drive gear 33 is few.But, drive gear 33
The number of teeth can be equal with the number of teeth of driven gear 35, and the number of teeth also than driven gear 35 is more.
As described above, in the oil pressure actuated systems 1 of this embodiment, me icgcii motor 27 is configured at the first pump 21
Side, therefore, it is possible to the total length for the assembly for shortening engine 15, the first pump 21, the second pump 24 and me icgcii motor 27.
Also, in this embodiment, the number of teeth of the gear ratio driven gear 35 of drive gear 33 is few, therefore from drive gear
33 are reduced towards the rotary speed of driven gear 35.It therefore, it can use small-sized hydraulic motor as again according to its speed reducing ratio
Raw motor 27, can reduce cost.
Moreover, in this embodiment, be configured between the rotary shaft 28 and drive gear 33 of me icgcii motor 27 it is unidirectional from
Clutch 31, therefore the 3rd rotary shaft 28 of me icgcii motor 27 when not regenerating energy, can be prevented because of the power of engine 15
Rotation.Thereby, it is possible to further suppress the waste of energy.
（Other embodiments）
The invention is not restricted to above-mentioned embodiment, without departing from the spirit of the invention within the scope, various modifications can be carried out.
For example, in above-mentioned embodiment, the first rotary shaft 22 of the first pump 21 and the second rotary shaft 25 of the second pump 24
Linked by driven gear 35.However, driven gear 35 can be also installed on to times of the first rotary shaft 22 and the second rotary shaft 25
One side, and link the first rotary shaft 22 of the first pump 21 and the second rotation of the second pump 24 by the connector beyond driven gear 35
Rotating shaft 25.But, if the driven gear 35 as above-mentioned embodiment, which is played, links the first rotary shaft 22 and the second rotary shaft
25 effect, then need not link the connector of the first rotary shaft 22 and the second rotary shaft 25, can cut down number of components.
Also, not necessarily must be provided with one-way clutch 31, drive gear 33 can be directly mounted at me icgcii motor 27
3rd rotary shaft 28.In this case, in addition to expectation is when rotational deceleration and when swing arm declines, making the tilt angle of me icgcii motor 27
It is zero.Moreover, me icgcii motor 27 not necessarily needs to be the motor of variable capacity type or the motor of fixed capacity type.
Also, in above-mentioned embodiment, drive gear 33 is engaged by idler gear 34 with driven gear 35, but it can also save
Slightly idler gear 34, makes drive gear 33 directly be engaged with driven gear 35.
In addition, in the case where omitting idler gear 34, it is bevel gear that can make drive gear 33 and driven gear 35, the
The assembly of one pump 21 and the second pump 24 and me icgcii motor 27 is shaped generally as T-shaped.I.e., it is possible to which me icgcii motor 27 is configured
In the side of the first pump 21 and the second pump 24.But, if drive gear 33 and driven gear 35 as above-mentioned embodiment
For spur gear, then it can make the 3rd rotary shaft 28 of me icgcii motor 27 and the first rotary shaft 22 of the first pump 21 and the second pump 24
The second rotary shaft 25 it is parallel, me icgcii motor 27 is configured to the side of the first pump 21 or the second pump 24.Thus, it can not only contract
The total length of the assembly of the short pump 24 of first pump 21 and second and me icgcii motor 27, additionally it is possible to reduce the width of assembly.
Symbol description：
1 oil pressure actuated systems；
10 building machineries；
11 swing arm cylinders；
14 rotation motors；
15 engines；
16 output shafts；
21 first pumps；
22 first rotary shafts；
24 second pumps；
25 second rotary shafts；
27 me icgcii motors；
28 the 3rd rotary shafts；
29 me icgcii motor adjusters；
31 one-way clutch；
33 drive gears；
35 driven gears；
65 swing arm operation valves；
73 rotations regeneration switching valve；
74 swing arms regeneration switching valve；
8 control devices.
Claims (6)
1. a kind of oil pressure actuated systems of building machinery, possess：
Working oil is supplied to rotation motor and there is the first pump of the first rotary shaft；
Working oil is supplied to swing arm cylinder and with the second pump of the second rotary shaft linked with first rotary shaft；
With the engine with first rotary shaft or the output shaft of second rotary shaft link；
The driven of first rotary shaft and/or second rotary shaft is installed between first pump and second pump
Gear；
The drive gear engaged with the driven gear；
Me icgcii motor with the 3rd rotary shaft that power is transmitted to the drive gear；And
The rotation that the working oil discharged during rotational deceleration from the rotation motor is guided to the me icgcii motor is switched with regeneration
The swing arm that valve and the working oil discharged from the swing arm cylinder when swing arm is declined guides to the me icgcii motor is with regenerating switching valve
In at least one party.
2. the oil pressure actuated systems of building machinery according to claim 1, it is characterised in that
The number of teeth of driven gear is few described in the gear ratio of the drive gear.
3. the oil pressure actuated systems of building machinery according to claim 1 or 2, it is characterised in that
Between the 3rd rotary shaft of the me icgcii motor and the drive gear, being configured with can realize from the described 3rd
The one-way clutch of the unidirectional power transmission of drive gear described in axial rotary.
4. according to the oil pressure actuated systems of building machinery according to any one of claims 1 to 3, it is characterised in that
The me icgcii motor is the motor for the variable capacity type that tilt angle can be changed,
Possess：Adjust the me icgcii motor adjuster of the tilt angle of the me icgcii motor；And
When guiding working oil to the me icgcii motor with regeneration switching valve by the rotation, got over the rotary speed of rotary body
The control device of adjuster is regenerated described in the bigger form control of the tilt angle of the me icgcii motor.
5. according to the oil pressure actuated systems of building machinery according to any one of claims 1 to 4, it is characterised in that
The me icgcii motor is the motor for the variable capacity type that tilt angle can be changed,
Possess：Adjust the me icgcii motor adjuster of the tilt angle of the me icgcii motor；And
When guiding working oil to the me icgcii motor with regeneration switching valve by the swing arm, exported with slave arm operation valve
The control device of me icgcii motor adjuster described in the bigger form control of the tilt angle of the first pilot me icgcii motor.
6. according to the oil pressure actuated systems of building machinery according to any one of claims 1 to 5, it is characterised in that
The driven gear links first rotary shaft and second rotary shaft.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014256982A JP6442270B2 (en) | 2014-12-19 | 2014-12-19 | Hydraulic drive system for construction machinery |
| JP2014-256982 | 2014-12-19 | ||
| PCT/JP2015/006199 WO2016098335A1 (en) | 2014-12-19 | 2015-12-11 | Hydraulic drive system for construction machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107076183A true CN107076183A (en) | 2017-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580063964.3A Pending CN107076183A (en) | 2014-12-19 | 2015-12-11 | The oil pressure actuated systems of building machinery |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6442270B2 (en) |
| CN (1) | CN107076183A (en) |
| WO (1) | WO2016098335A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102128630B1 (en) * | 2014-03-24 | 2020-06-30 | 두산인프라코어 주식회사 | control method for Swing motor of Hydraulic system |
| CN107152429B (en) * | 2017-06-26 | 2018-09-07 | 常德中联重科液压有限公司 | Engineering machinery, hydraulic control circuit and valve terminal |
| JP7029939B2 (en) | 2017-11-17 | 2022-03-04 | 川崎重工業株式会社 | Construction machinery drive system |
| KR102633378B1 (en) | 2019-02-13 | 2024-02-02 | 에이치디현대인프라코어 주식회사 | Construction machinery |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003049809A (en) * | 2001-08-07 | 2003-02-21 | Hitachi Constr Mach Co Ltd | Pressure oil energy recovering device and construction machine with the same |
| JP2008128478A (en) * | 2006-11-24 | 2008-06-05 | Toshiba Mach Co Ltd | Method and device for regenerating kinetic energy and/or potential energy of inertial body in construction machine |
| JP2008232307A (en) * | 2007-03-20 | 2008-10-02 | Toshiba Mach Co Ltd | Method and device for regenerating kinetic energy and/or potential energy of inertial body in construction machine |
| JP2011017130A (en) * | 2009-07-07 | 2011-01-27 | Kobelco Contstruction Machinery Ltd | Rotary working machine |
| JP2014156694A (en) * | 2013-02-14 | 2014-08-28 | Hitachi Constr Mach Co Ltd | Work vehicle |
-
2014
- 2014-12-19 JP JP2014256982A patent/JP6442270B2/en not_active Expired - Fee Related
-
2015
- 2015-12-11 WO PCT/JP2015/006199 patent/WO2016098335A1/en active Application Filing
- 2015-12-11 CN CN201580063964.3A patent/CN107076183A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003049809A (en) * | 2001-08-07 | 2003-02-21 | Hitachi Constr Mach Co Ltd | Pressure oil energy recovering device and construction machine with the same |
| JP2008128478A (en) * | 2006-11-24 | 2008-06-05 | Toshiba Mach Co Ltd | Method and device for regenerating kinetic energy and/or potential energy of inertial body in construction machine |
| JP2008232307A (en) * | 2007-03-20 | 2008-10-02 | Toshiba Mach Co Ltd | Method and device for regenerating kinetic energy and/or potential energy of inertial body in construction machine |
| JP2011017130A (en) * | 2009-07-07 | 2011-01-27 | Kobelco Contstruction Machinery Ltd | Rotary working machine |
| JP2014156694A (en) * | 2013-02-14 | 2014-08-28 | Hitachi Constr Mach Co Ltd | Work vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6442270B2 (en) | 2018-12-19 |
| WO2016098335A1 (en) | 2016-06-23 |
| JP2016118221A (en) | 2016-06-30 |
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