CN108430828A - Mixing drum driving device - Google Patents
Mixing drum driving device Download PDFInfo
- Publication number
- CN108430828A CN108430828A CN201680075943.8A CN201680075943A CN108430828A CN 108430828 A CN108430828 A CN 108430828A CN 201680075943 A CN201680075943 A CN 201680075943A CN 108430828 A CN108430828 A CN 108430828A
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- Prior art keywords
- mixing drum
- fluid
- valve
- control valve
- driving device
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/42—Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/16—Vehicles adapted to transport, to carry or to comprise special loads or objects for carrying mixed concrete, e.g. having rotatable drums
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
Abstract
Mixing drum driving device (100) includes：Hydraulic pump (5) is driven by the traveling of vehicle (1) with engine (3)；Hydraulic motor (6) is worked using the working fluid sprayed by hydraulic pump (5), to drive mixing drum (2) to rotate；Control valve (8) is used to control flowing of the working fluid from hydraulic pump (5) to hydraulic motor (6)；Motor (11) is driven electrically in the traveling idle stop of engine (3) and is rotated；Auxiliary hydraulic pump (12) is driven by the rotation of motor (11) and sprays working fluid, and hydraulic motor (6) is made to work；And check valve (14), be used to prevent working fluid from control valve (8) to hydraulic pump (5) adverse current.
Description
Technical field
The present invention relates to a kind of mixing drum driving devices.
Background technology
Recorded in Japanese JP2012-91729A it is a kind of for be rotatably freely equipped on the roller of trucd mixer into
The drum rotation device of row rotation driving.Drum rotation device recorded in Japanese JP2012-91729A includes：Hydraulic pump,
It is stirred the traveling engine driving of vehicle；Hydraulic motor, using from the hydraulic pump convey come pressure oil and rotate；And
Roller is linked to the output shaft of hydraulic motor.The case where drum rotation device recorded in Japanese JP2012-91729A
Under, switch the position of switching valve by operating changer lever, to which the direction of rotation of hydraulic motor to be switched to forward or backwards.
A kind of driving device for driving mixing drum to rotate is recorded in Japanese JP2014-196094A, this is stirred
Roller is mixed to be equipped on vehicle and ready-mixed concrete can be loaded.Driving device recorded in Japanese JP2014-196094A includes：
Hydraulic pump is traveling and uses engine driving；Hydraulic motor is worked using the working oil sprayed by hydraulic pump, to drive
Dynamic mixing drum rotation；And switching valve, it is used to switch the direction of rotation of hydraulic motor.Japanese JP2014-196094A institutes
The driving device of record is configured to：In idle stop, auxiliary hydraulic pump is driven as the motor of driving source using using battery,
Hydraulic motor is set to work using the working oil sprayed by the auxiliary hydraulic pump.
Invention content
For trucd mixer, the separation of ready-mixed concrete, makes mixing drum revolve in the process of moving in order to prevent
Turn.Also, in recent years, seek a kind of trucd mixer with idle stop function.
It is directly applied to idle stop by the mixing plant driving device recorded in Japanese JP2012-91729A
When the trucd mixer of function, the traveling engine stop when idle stop, therefore be traveling with engine-driven hydraulic pump
Stop.Therefore, the mixing plant driving device recorded in Japanese JP2012-91729A can not utilize hydraulic pressure in idle stop
Pump makes mixing drum rotate.
Accordingly, it is considered to be arranged by using battery as power driving device as recorded in Japanese JP2014-196094A
The auxiliary hydraulic pump of the motor drive in source makes hydraulic motor rotate using the auxiliary hydraulic pump.
But in the case of mixing plant driving device recorded in Japanese JP2014-196094A, in idle stop
In the process, switching valve maintains communicating position.Accordingly, there exist such hidden danger：The working oil sprayed by auxiliary pump is via switching
Valve flows into hydraulic pump, and the flow of the working oil sprayed by auxiliary pump is reduced.If the stream of the working oil sprayed like this by auxiliary pump
Amount is reduced, then the rotation of mixing drum can be caused insufficient.
The purpose of the present invention is to provide a kind of can to make the work sprayed by auxiliary fluid press pump during idle stop
The mixing drum driving device supplied to mixing drum with making fluid stable.
A certain technical solution according to the present invention, for being equipped on vehicle and the stirring of ready-mixed concrete can be loaded
Roller carry out rotation driving mixing drum driving device include：Fluid press pump, by the engine driving of vehicle；Fluid presses horse
It reaches, is worked using the working fluid sprayed by fluid press pump, to drive mixing drum to rotate；Control valve is used to control
Flowing of the working fluid processed from fluid press pump to fluid pressure motor；Motor is driven in the idle stop of engine by electric power
It moves and rotates；Fluid press pump is assisted, is driven by the rotation of motor and sprays working fluid, fluid pressure motor is made to work；With
And adverse current preventing portion, it is used to prevent working fluid from control valve to fluid press pump adverse current.
Description of the drawings
Fig. 1 is the vertical view of the trucd mixer of the mixing drum driving device equipped with embodiments of the present invention.
Fig. 2 is the hydraulic circuit diagram of the mixing drum driving device of embodiments of the present invention.
Hydraulic circuit diagram when Fig. 3 is the idle stop of the mixing drum driving device of embodiments of the present invention.
Fig. 4 is the hydraulic circuit diagram of the variation for the mixing drum driving device for indicating embodiments of the present invention.
Fig. 5 is the hydraulic circuit diagram of the variation for the mixing drum driving device for indicating embodiments of the present invention.
Fig. 6 is the hydraulic circuit diagram of the variation for the mixing drum driving device for indicating embodiments of the present invention.
Specific implementation mode
Hereinafter, being described with reference to the mixing drum driving device 100 of embodiments of the present invention.
First, illustrate the overall structure of the trucd mixer 10 equipped with mixing drum driving device 100 referring to Fig.1.
Trucd mixer 10 includes：The traveling of vehicle 1 engine 3；Mixing drum 2 is equipped on vehicle 1 and can load pre-
Mixed concrete；And mixing drum driving device 100, it is used to drive mixing drum 2 to rotate.Trucd mixer 10 is filled for carrying
The ready-mixed concrete being loaded in mixing drum 2.
Mixing drum 2 is the container for having round-ended cylinder shape that can be rotatably equipped on vehicle 1.Mixing drum 2, which is carried, is
Front-rear direction of the rotation axis towards vehicle 1.Mixing drum 2 is carried to tilt forward and back, with being gone towards the rear portion of vehicle 1 and
Gradually get higher.Mixing drum 2 is formed with opening portion in its back-end, can be packed into and be discharged ready-mixed concrete from opening portion.
Mixing drum 2 is with the front linked with the output shaft of mixing drum driving device 100, the left side and rear portion at rear portion
This three-point support of right side on vehicle 1.The rear portion of mixing drum 2 is rotatably supported by roller (illustration omitted).With row
It sails and is rotated for power source drive mixing drum 2 with engine 3.
Then, illustrate mixing drum driving device 100 with reference to Fig. 2 and Fig. 3.Fig. 2 is to indicate mixing drum driving device 100
Hydraulic circuit figure.
Mixing drum driving device 100 is traveling the rotation driving with engine 3, and driving is pressed using the fluid of working fluid
Mixing drum 2 rotates.The traveling rotary motion of the bent axle of engine 3 utilizes dynamic for being taken out always from traveling engine 3
4 (the PTO of power unloading device of power：Power-take-off) it is transferred to mixing drum driving device 100.
In mixing drum driving device 100, using working oil as working fluid.Working oil can also be replaced, is used
Other incompressible fluids are as working fluid.Mixing drum driving device 100 includes：Hydraulic pump 5 is fluid press pump,
It is traveling and is driven with engine 3；Hydraulic motor 6 is worked for fluid pressure motor using the working oil sprayed by hydraulic pump 5,
To drive mixing drum 2 to rotate；Control valve 8 is used to control flowing of the working oil from hydraulic pump 5 to hydraulic motor 6；Perfusion
Pump 9 is traveling and is driven with engine 3, is set as coaxial with hydraulic pump 5；And check valve 14, it is adverse current preventing portion, if
Access between hydraulic pump 5 and control valve 8, for preventing working oil from control valve 8 to 5 adverse current of hydraulic pump.
Hydraulic pump 5 is rotated by power unloading device 4 from the power drive that traveling engine 3 takes out always.Liquid
Press pump 5 is the wobble plate axial piston pump of volume-variable.
Hydraulic motor 6 is the fixed inclined disc type axial piston motor of capacity.The reception of hydraulic motor 6 is sprayed by hydraulic pump 5
The supply of working oil and be driven to rotate.Hydraulic motor 6 links via retarder 7 and mixing drum 2.Hydraulic motor 6 is controlled
Valve 8, which is switched to, to be rotated in the forward direction or reversely rotates.In the case where making mixing drum 2 rotate in the forward direction using hydraulic motor 6, stirring rolling
Ready-mixed concrete in cylinder 2 is stirred.On the other hand, in the case where making mixing drum 2 reversely rotate using hydraulic motor 6,
Ready-mixed concrete in mixing drum 2 is discharged from the opening portion of rear end to outside.In addition, in the present embodiment, for hydraulic pressure
Motor 6 is illustrated by taking the fixed inclined disc type axial piston motor of capacity as an example, and however, it is not limited to this, hydraulic motor 6
It can be the inclined disc type axial piston motor of volume-variable.
Closed circuit 20, working oil cycle in the closed circuit 20 are equipped between hydraulic pump 5 and hydraulic motor 6.It closes
Circuit 20 is closed by return path (pump suction passage) 21, supply passageway (pump sprays access) the 22 and the 1st supply and discharge access the 23, the 2nd
Supply and discharge access 24 is constituted, the suction inlet and control valve 8 of the 21 connection hydraulic pump 5 of return path (pump suction passage), and the supply is logical
The 8, the 1st supply and discharge access 23 of ejiction opening and control valve, the 2nd supply and discharge access 24 of 22 connection hydraulic pump 5 of road (pump sprays access) connect
Connect control valve 8 and each mouth in two mouths of hydraulic motor 6.
Control valve 8 includes：Forward position A guides the working oil that hydraulic pump 5 sprays to hydraulic pressure in forward position A
Motor 6, so that mixing drum 2 rotates in the forward direction；Backward position B draws the working oil that hydraulic pump 5 sprays in backward position B
It is directed at hydraulic motor 6, so that mixing drum 2 reversely rotates；And blocking position C blocks working oil in blocking position C
It is flowed from hydraulic pump 5 to hydraulic motor 6.Control valve 8 operates operating lever 8a to switch over by driver.
Charge pump 9 will be sprayed from the working oil that tank T is sucked via access 25 to perfusion access 26.The working oil is logical from being perfused
It is filled to return path 21 via check valve 15 on road 26.
Perfusion access 26 is connected to via overflow valve 50 with tank T.When the pressure that access 26 is perfused rises to more than predetermined value,
50 valve opening of overflow valve is returned from the extra working oil that charge pump 9 sprays to tank T.
Check valve 14 be set to connection hydraulic pump 5 and control valve 8 supply passageway 22, with prevent working oil from control valve 8 to
The ejiction opening side adverse current of hydraulic pump 5.
Mixing drum driving device 100 further includes：Load-sensing valve 30, is adjusted, so that in the 1st supply and discharge access
23, the difference between the load pressure that one of the 2nd supply and discharge access 24 generates and the pressure (pump sprays pressure) of supply passageway 22
Press to predetermined value；And shut-off valve 40, the pump of hydraulic pump 5 is adjusted according to the pressure of supply passageway 22 (pump sprays pressure)
Spray capacity.
The pump spray of the load pressure and supply passageway 22 that are generated in one of the 1st supply and discharge access 23, the 2nd supply and discharge access 24
Go out pressure as pilot pressure and imports load-sensing valve 30 with fighting each other.Load-sensing valve 30 is adjusted via transmission device access
27 guide to the pilot pressure of transmission device 5a, so as to generated in one of the 1st supply and discharge access 23, the 2nd supply and discharge access 24
The pump of load pressure and supply passageway 22, which sprays the differential pressure between pressure, becomes predetermined value.
Load-sensing valve 30 includes the position F for making transmission device 5a be connected to tank T and makes transmission device 5a and supply passageway
The position G of 22 connections.Load-sensing valve 30 is exerted a force by the active force of spring 34 towards position F always.
Load-sensing valve 30 is connect with the 1st pilot pressure access 31, the 2nd pilot pressure access 32.1st pilot pressure access
31 are connected to via high selector relay 33 with the high-pressure side (load pressure side) of the 1st supply and discharge access 23, the 2nd supply and discharge access 24.2nd first
Pressure port 32 is led to connect with supply passageway 22.As high selector relay 33, such as shuttle valve is used.
In load-sensing valve 30, the active force of the load pressure and spring 34 come from the guiding of the 1st pilot pressure access 31
It plays a role together to the direction for switching to position F, the pressure of the supply passageway 22 come from the guiding of the 2nd pilot pressure access 32
(pump spray pressure) resist the active force of the load pressure and spring 34 come from the guiding of the 1st pilot pressure access 31 and to switching to
The direction of position G plays a role.
The pressure (pump sprays pressure) of supply passageway 22 imports shut-off valve 40 as pilot pressure.Pressure is sprayed in pump to rise
When to be more than predetermined value, shut-off valve 40 improves the pilot pressure guided to transmission device 5a, and the pump for reducing hydraulic pump 5 sprays appearance
Amount.
Shut-off valve 40 includes the position H for making transmission device 5a be connected to tank T and transmission device 5a is made to connect with supply passageway 22
Logical position I.
The pilot pressure access 41 of shut-off valve 40 is connect with supply passageway 22.In shut-off valve 40, the active force of spring 42
It plays a role to the direction for switching to position H, the pilot pressure (pump sprays pressure) come from the guiding of pilot pressure access 41 is resisted
The active force of spring 42 and play a role to the direction for switching to position I.
When mixing drum 2 is driven, in the situation that the pressure (pump sprays pressure) of supply passageway 22 is predetermined value or less
Lower shut-off valve 40 is maintained at position H, and the transmission device access 27 of connection load-sensing valve 30 and transmission device 5a is made to open.At this
Under state, in the pressure for the load pressure and supply passageway 22 that one of the first supply and discharge access 51, the second supply and discharge access 52 generate
Power (pump sprays pressure) fights ground as pilot pressure and imports load-sensing valve 30 each other.Load-sensing valve 30 is according to their difference
Pressure carrys out the guiding of regulate transmission device access 27 to the pressure of transmission device 5a.Thereby, it is possible to adjust liquid using transmission device 5a
The pump of press pump 5 sprays capacity, so that the load pressure generated in one of the 1st supply and discharge access 23, the 2nd supply and discharge access 24 and confession
Become predetermined value to the differential pressure between the pressure (pump sprays pressure) of access 22.
When stopping the driving of mixing drum 2, control valve 8 switches to blocking position C, and supply passageway 22 and the 1st supply and discharge are logical
The connection on road 23, the 2nd supply and discharge access 24 is blocked.At this point, when pump sprays pressure and rises to more than predetermined value, from pilot pressure
The pilot pressure (pump spray pressure) that the guiding of access 41 comes rises, therefore shut-off valve 40 overcomes the active force of spring 42 from position H
Switch to position I.Transmission device 5a is connected to supply passageway 22 as a result, therefore the pressure of supply passageway 22 (pump sprays pressure)
Transmission device 5a is imported, the pump of hydraulic pump 5 sprays capacity and reduces.
Mixing drum driving device 100 further includes：Motor 11 is stored in the electric drive of battery (not shown)；
Auxiliary hydraulic pump 12 is driven by the rotation of motor 11 for auxiliary fluid press pump and sprays working oil, make 6 work of hydraulic motor
Make；And open and close valve 13, it is set to the drain passageway 29 of connection the 2nd supply and discharge access 24 and tank T, for being opened and closed drain passageway 29.
The output shaft of motor 11 links with the rotary shaft of auxiliary hydraulic pump 12.Motor 11 is in traveling engine 3
In the state of idle stop, i.e. idle stop when drive, drive auxiliary hydraulic pump 12.
Auxiliary hydraulic pump 12 sucks the working oil for being stored in tank T and sprays it to auxiliary supply passageway 28.It is ejected into
The working oil of supply passageway 28 is assisted to be supplied to the 1st supply and discharge access 23 via check valve 16.It is sprayed as a result, by auxiliary hydraulic pump 12
Working oil via auxiliary supply passageway 28 and the 1st supply and discharge access 23 supply to hydraulic motor 6, so that hydraulic motor 6 is rotated in the forward direction.
Motor 11 and auxiliary hydraulic pump 12 are used to drive mixing drum 2 to rotate in traveling 3 idle stop of engine,
Stop to avoid the stirring for the ready-mixed concrete for being loaded into mixing drum 2.
Open and close valve 13 is the electromagnetic type switching valve controlled using controller (not shown).Open and close valve 13 includes blocking the
The position D of the connection of the 2 supply and discharge access 24 and tank T and position E for making the 2nd supply and discharge access 24 be connected to tank T.When usual, opening and closing
Valve 13 is exerted a force by spring and is maintained at the positions D.In idle stop, open and close valve 13 applies electric current by controller, to switch to E
Position.
The action of the mixing drum driving device 100 constituted as described above is illustrated.
When traveling is driven with engine 3, hydraulic pump 5 is driven, and sprays working oil to supply passageway 22.In premixing coagulation
In the handling process of soil, driver operates operating lever 8a and control valve 8 is switched to forward position A from blocking position C.As a result,
The working oil for being ejected into supply passageway 22 is supplied via check valve 14, control valve 8 and the 1st supply and discharge access 23 to hydraulic motor 6, is made
Hydraulic motor 6 rotates in the forward direction.
The rotation of hydraulic motor 6 is transferred to mixing drum 2 via retarder 7, and mixing drum 2 is made to rotate in the forward direction.It stirs as a result,
The ready-mixed concrete mixed in roller 2 is stirred.The working oil being discharged from hydraulic motor 6 is via the 2nd supply and discharge access 24, control valve 8
And return path 21 returns to the suction inlet of hydraulic pump 5.
Like this, when traveling is driven with engine 3, control valve 8 is switched into forward position A, to make mixing drum 2
It rotates in the forward direction.Ready-mixed concrete is stirred in mixing drum 2 as a result, can prevent ready-mixed concrete from detaching.
If during driving of the traveling with engine 3 driver operate operating lever 8a and by control valve 8 from blocking position C
Backward position B is switched to, then is ejected into the working oil of supply passageway 22 via check valve 14, control valve 8 and the 2nd supply and discharge access 24
Supply makes hydraulic motor 6 reversely rotate to hydraulic motor 6.The rotation of hydraulic motor 6 is transferred to mixing drum via retarder 7
2, so that mixing drum 2 is reversely rotated.The ready-mixed concrete in mixing drum 2 is discharged from the opening portion of rear end to outside as a result,.From
The working oil that hydraulic motor 6 is discharged returns to the sucking of hydraulic pump 5 via the 1st supply and discharge access 23, control valve 8, return path 21
Mouthful.
When mixing drum 2 (hydraulic motor 6) is rotated by driving, it is in the pressure (pump sprays pressure) of supply passageway 22
In the state of below predetermined value, shut-off valve 40 is maintained at position H, links the transmission device of load-sensing valve 30 and transmission device 5a
Access 27 is opened.Load-sensing valve 30 adjusts the pressure guided from supply passageway 22 to transmission device 5a via transmission device access 27
Power, so that the pressure of the load pressure and supply passageway 22 generated in one of the 1st supply and discharge access 23, the 2nd supply and discharge access 24
Differential pressure between (pump sprays pressure) becomes predetermined value.Thereby, it is possible to adjust the pump of hydraulic pump 5 using transmission device 5a and spray to hold
Amount, so that the pressure of the load pressure and supply passageway 22 generated in one of the 1st supply and discharge access 23, the 2nd supply and discharge access 24
Differential pressure between (pump sprays pressure) becomes predetermined value.
When trucd mixer 10 stops because of signal lamp etc. in the process of moving, traveling 3 idle stop of engine becomes idle
Fast halted state.Like this when traveling is stopped with engine 3, hydraulic pump 5 also stops rotating, therefore can not utilize hydraulic pump 5
Hydraulic motor 6 is driven to rotate.At this point, auxiliary hydraulic pump 12 is driven by the motor 11 of power source of battery, supplied via auxiliary
To access 28 working oil is supplied to the 1st supply and discharge access 23.It is supplied as a result, via auxiliary by the working oil that auxiliary hydraulic pump 12 sprays
Access 28, the supply of the 1st supply and discharge access 23 make hydraulic motor 6 rotate in the forward direction to hydraulic motor 6.At the same time, not shown control
Device processed applies electric current to open and close valve 13, and open and close valve 13 is made to switch to position E (with reference to Fig. 3).It is discharged as a result, from hydraulic motor 6
Working oil returns to tank T via the 2nd supply and discharge access 24, drain passageway 29 and open and close valve 13.
At this point, as shown in figure 3, control valve 8 maintains forward position A, therefore the working oil sprayed by auxiliary hydraulic pump 12
As shown by arrows in Figure 3 supply passageway 22 is flowed into via control valve 8 like that.But it is equipped with check valve 14 in supply passageway 22, because
This can prevent to flow into hydraulic pump 5 by the working oil that auxiliary hydraulic pump 12 sprays.Thus, it is possible to prevent reason auxiliary hydraulic pump 12
The working oil of ejection flows into hydraulic pump 5 and the flow of the working oil to be gushed out by auxiliary hydraulic pump 12 is caused to reduce, therefore can
Prevent the rotation of the mixing drum 2 during idle stop insufficient.
When driver's bend the throttle etc. makes idle stop state release, traveling is driven again with engine 3.By
This, hydraulic pump 5 is rotated by driving, sprays working oil to supply passageway 22.At the same time, motor 11 stops, and stops by controlling
Device processed applies electric current to open and close valve 13.Since motor 11 stops, working oil is logical from auxiliary hydraulic pump 12 to auxiliary supply
The supply on road 28 stops.Also, due to stopping applying electric current by controller, open and close valve 13 switches to position D, therefore the 2nd
Supply and discharge access 24 and the connection of tank T are blocked.
In this way, hydraulic motor 6 is driven by the working oil sprayed by hydraulic pump 5 and is rotated again.
Mixing drum driving device 100 more than, obtains effect as shown below.
Mixing drum driving device 100 includes for preventing working oil from control valve 8 to the check valve of 5 adverse current of hydraulic pump
14.As a result, in idle stop, it can prevent the working oil sprayed by auxiliary hydraulic pump 12 from flowing to 5 side of hydraulic pump.Thus,
During idle stop, the working oil sprayed from auxiliary hydraulic pump 12 can be made steadily to be supplied to mixing drum 2, therefore can
Prevent the rotation of mixing drum 2 insufficient.
In the case where mixing drum driving device 100 does not include check valve 14, whenever being switched to idle stop state
It is required for control valve 8 switching to blocking position C from forward position A and blocks the company of auxiliary hydraulic pump 12 and supply passageway 22
It is logical.It, for the driver, all will control whenever idle stop especially in the case where control valve 8 is manual operation form
Valve 8 processed, which switches to blocking position C, can become prodigious burden.
Mixing drum driving device 100 includes check valve 14, therefore even if need not be incited somebody to action if being switched to idle stop state
Control valve 8 switches to blocking position C.That is, in idle stop, even if control valve 8 can prevent if maintaining forward position A
Hydraulic pump 5 is flowed by the working oil that auxiliary hydraulic pump 12 sprays.Accordingly, it is not necessary to the operation of switching control valve 8.
Also, adverse current preventing portion is used as using check valve 14, so as to be constituted with simple.Also, it is not necessary to
Check valve 14 is controlled, therefore the signal for control, piping need not be set.Thus, it is possible to make mixing drum driving device 100
Simply to construct.
If it is the structure that control valve 8 is switched to blocking position C in idle stop from forward position A, then travelling
When being driven again from idle stop state with engine 3, need control valve 8 switching to forward position A from blocking position C, because
This time of origin when being switched to the driving carried out based on hydraulic pump 5 from the driving carried out based on auxiliary hydraulic pump 12 is lagged.But
It is, in the case of mixing drum driving device 100, when traveling is driven with engine 3 from idle stop state again, due to
Control valve 8 maintains forward position A, therefore does not need switching control valve 8.Thus, it is possible to successfully from based on auxiliary hydraulic pump
12 drivings carried out are switched to the driving carried out based on hydraulic pump 5.Supply of the working oil to hydraulic motor 6 as a result, will not be interrupted,
Therefore mixing drum 2 can be made to be stably rotated.
For control valve 8, it is illustrated so that switching mode is hand as an example but it is also possible to be Electromagnetically-operating formula.
In this case, and control valve 8 is maintained into forward position A in idle stop, therefore control valve 8 need not be switched
To the control of blocking position C.Thus, it is possible to which control is made to simplify.
In addition, check valve 14 is located between hydraulic pump 5 and control valve 8, but it can also be set to control valve as shown in Figure 4
In 8, and only play a role when control valve 8 is in forward position A.As a result, when control valve 8 is in forward position A, check valve
14 play a role, and prevent working oil from control valve 8 to 5 adverse current of hydraulic pump, when control valve 8 is in backward position B, check valve 14
It does not play a role.It specifically describes, in general, in the driving process of trucd mixer 10 mixing drum 2 will not reversely rotate.That is,
In idle stop, control valve 8 will not be switched to backward position B (in driving process), therefore not consider in backward position B
Working oil there will not be influence from control valve 8 to 5 adverse current of hydraulic pump.Also, it is medium in the stopped process of trucd mixer 10, make to stir
It mixes when roller 2 reversely rotates (when control valve 8 is in backward position B), the working oil sprayed by hydraulic pump 5 can will not be by list
To the pressure loss caused by valve 14 influence to hydraulic motor 6 supply.Thus, using such structure, rolled making stirring
Cylinder 2 will not be influenced when reversely rotating by the pressure loss of check valve 14, therefore can improve the efficiency of hydraulic pump 5, realize
Energy-saving.
In addition, in the above-described embodiment, as adverse current preventing portion, being illustrated by taking check valve 14 as an example, but also may be used
To use electromagnetic switching valve 60 as adverse current preventing portion as shown in Figure 5.In this case, by making open and close valve 13 and electromagnetism
Switching valve 60 is synchronously carried out control, can play a role in the same manner as the case where using check valve 14.
In addition it is also possible to be used as adverse current preventing portion using pilot operated formula switching valve 160 as shown in Figure 6.Hereinafter, saying
The bright variation using pilot operated formula switching valve 160.
In the variation, pilot operated formula switching valve 160 is set to replace check valve 14 in supply passageway 22, is being discharged
Open and close valve 113 is arranged to replace open and close valve 13 in access 29.
Pilot operated formula switching valve 160 includes the position J for opening supply passageway 22 and the position K for blocking supply passageway 22.
Pilot operated formula switching valve 160 is configured to open in usual.Specifically, not acting on the state of pilot chamber 160a in pilot pressure
Under, under the action of the active force of spring 160b, pilot operated formula switching valve 160 is maintained at position J, and first pilot power acts on
In the state of pilot chamber 160a, pilot pressure overcomes the active force of spring 160b and spool is made to move, pilot operated formula switching valve
160 switch to position K.The first guiding path that pilot pressure is branched out via the upstream side of the check valve 16 from auxiliary supply passageway 28
161 supply to pilot chamber 160a.
Open and close valve 113 is connect with pilot pressure drain passageway 162, and the pilot pressure drain passageway 162 is logical from auxiliary supply
Road 28 is branched off and is connected to tank T.Open and close valve 113 is controlled using controller (not shown) in the same manner as open and close valve 13
Electromagnetic type switching valve.Open and close valve 113 include block the connection of the 2nd supply and discharge access 24 and tank T and make auxiliary supply passageway 28 with
The position D1 and so that the 2nd supply and discharge access 24 is connected to tank T and block auxiliary supply passageway 28 and the connection of tank T that tank T is connected to
Position E1.
In engine driving, open and close valve 113 is not applied to electric current, therefore open and close valve 113 is in the work of the active force of spring
The positions D1 are maintained under.In this state, auxiliary hydraulic pump 12 stops, therefore the working oil of pilot chamber 160a is via being first connected
Road 161, pilot pressure drain passageway 162 and open and close valve 113 are discharged to tank T.Pilot operated formula switching valve 160 is maintained at as a result,
Position J, supply passageway 22 maintain open state.In contrast, in idle stop (when engine stop), open and close valve
113 apply electric current by controller, and open and close valve 113 switches to the positions E1.In this state, auxiliary hydraulic pump 12 drives, therefore by
The working oil that auxiliary hydraulic pump 12 sprays is supplied via first guiding path 161 to pilot chamber 160a.Pilot operated formula switching valve as a result,
160 switch to position K, and supply passageway 22 becomes the state being blocked.Pilot operated formula switching valve 160, guide are controlled like this
Operated switching valve 160 can play a role in the same manner as check valve 14, can prevent in idle stop by auxiliary hydraulic pump
12 working oils sprayed flow to 5 side of hydraulic pump.
The structure, function and effect for being configured to above such embodiments of the present invention are summed up and are illustrated.
Mixing drum driving device 100 includes：Fluid press pump (hydraulic pump 5), by the engine of vehicle 1, (traveling is sent out
Motivation 3) driving；Fluid pressure motor (hydraulic motor 6), utilization work by the working fluid that fluid press pump (hydraulic pump 5) sprays
Make, to drive mixing drum 2 to rotate；Control valve 8 is used to control working fluid from fluid press pump (hydraulic pump 5) to fluid
The flowing of pressure motor (hydraulic motor 6)；Motor 11, in the idle stop of engine (traveling engine 3) by electric power
It drives and rotates；Fluid press pump (auxiliary hydraulic pump 12) is assisted, is driven by the rotation of motor 11 and sprays working fluid, made
Fluid pressure motor (hydraulic motor 6) works；And adverse current preventing portion (check valve 14, electromagnetic switching valve 60, the switching of pilot operated formula
Valve 160), be used to prevent working fluid from control valve 8 to fluid press pump (hydraulic pump 5) adverse current.
In this configuration, equipped with for preventing working fluid from control valve 8 to the adverse current of fluid press pump (hydraulic pump 5) adverse current
Preventing portion (check valve 14, electromagnetic switching valve 60, pilot operated formula switching valve 160), therefore can prevent by auxiliary fluid press pump
The working fluid that (auxiliary hydraulic pump 12) sprays flows to fluid press pump (hydraulic pump 5) side.Thereby, it is possible to prevent mixing drum 2
Rotation is insufficient.
In addition, in mixing drum driving device 100, control valve 8 has：Forward position A will in forward position A
The working fluid sprayed by fluid press pump (hydraulic pump 5) is guided to fluid pressure motor (hydraulic motor 6), so that mixing drum 2 is just
To rotation；Backward position B guides the working fluid sprayed by fluid press pump (hydraulic pump 5) to stream in backward position B
Body pressure motor (hydraulic motor 6), so that mixing drum 2 reversely rotates；And blocking position C is blocked in blocking position C
Working fluid is flowed from fluid press pump (hydraulic pump 5) to fluid pressure motor (hydraulic motor 6), and control valve 8 is tieed up in idle stop
It holds in forward position A.
In this configuration, when engine (traveling engine 3) drives again from idle stop state, due to control valve
8 maintain forward position A, therefore can be successfully from the driving switching carried out based on auxiliary fluid press pump (auxiliary hydraulic pump 12)
To be based on the driving of fluid press pump (hydraulic pump 5) progress.Supply of the working fluid to fluid pressure motor (hydraulic motor 6) as a result,
It will not be interrupted, therefore mixing drum 2 can be made to be stably rotated.
In addition, in mixing drum driving device 100, adverse current preventing portion is check valve 14, is located at fluid press pump (hydraulic pressure
Pump is 5) between control valve 8.
In this configuration, adverse current preventing portion is constituted by check valve 14, so as to simply be constructed.Also, it is not required to
Adverse current preventing portion is controlled, therefore the control of mixing drum driving device 100 can be made to simplify.
In addition, in mixing drum driving device 100, adverse current preventing portion is check valve 14, is set to control valve 8, and only
It plays a role when control valve 8 is in forward position A.
In this configuration, adverse current preventing portion is constituted by check valve 14, so as to simply be constructed.Moreover, unidirectional
Valve 14 only plays a role when control valve 8 is in forward position A, therefore will not be led by check valve 14 in backward position B
The influence of the pressure loss of cause.Thereby, it is possible to improve the efficiency of fluid press pump (hydraulic pump 5), energy-saving is realized.
In addition, in mixing drum driving device 100, adverse current preventing portion is that switching valve is (electromagnetic switching valve 60, pilot operated
Formula switching valve 160).
In addition, in mixing drum driving device 100, switching valve (pilot operated formula switching valve 160) is using by assisting
The pilot pressure of fluid press pump (auxiliary hydraulic pump 12) supply and switching valve (the pilot operated formula of pilot operated formula switched over
Switching valve 160).
More than, embodiments of the present invention are illustrated, but the above embodiment only shows the present invention's
A part for application examples, objective simultaneously do not lie in the concrete structure that protection scope of the present invention is limited to the above embodiment.
In the above-described embodiment, it is configured to hydraulic pump 5 and is traveling driven with engine 3, but hydraulic pressure can also be configured to
Pump 5 is traveling with the engine driving other than engine 3.
Electromagnetic switching valve 60 and pilot operated formula switching valve 160 can also be located at the 1st supply and discharge access 23 and auxiliary supply is logical
The junction of two streams on road 28 is the same as between control valve 8.Also, electromagnetic switching valve 60 and pilot operated formula switching valve 160 can also be with Fig. 4 institutes
The variation shown similarly is set in control valve 8, and is only played a role when control valve 8 is in forward position A.
The Japanese Patent Application 2015- that this application claims filed an application to Japanese Patent Office based on December 24th, 2015
No. 251674 priority, are incorporated by referring to by all the contents of the application in this specification.
Claims (6)
1. a kind of mixing drum driving device, is used to that mixing drum to be driven to rotate, which is equipped on vehicle and can
Load ready-mixed concrete, wherein
The mixing drum driving device includes：
Fluid press pump, by the engine driving of the vehicle；
Fluid pressure motor is worked using the working fluid sprayed by the fluid press pump, to drive the mixing drum
Rotation；
Control valve is used to control flowing of the working fluid from the fluid press pump to the fluid pressure motor；
Motor is driven electrically in the idle stop of the engine and is rotated；
Fluid press pump is assisted, is driven by the rotation of the motor and sprays working fluid, the fluid pressure motor is made to work；
And
Adverse current preventing portion, be used to prevent working fluid from the control valve to the fluid press pump adverse current.
2. mixing drum driving device according to claim 1, wherein
The control valve has：
The working fluid sprayed by the fluid press pump is guided to the fluid in the forward position and presses horse by forward position
It reaches, so that the mixing drum rotates in the forward direction；
The working fluid sprayed by the fluid press pump is guided to the fluid in the backward position and presses horse by backward position
It reaches, so that the mixing drum reversely rotates；And
Blocking position blocks working fluid to be flowed from the fluid press pump to the fluid pressure motor in the blocking position,
The control valve maintains the forward position in the idle stop.
3. mixing drum driving device according to claim 1, wherein
The adverse current preventing portion is check valve, is located between the fluid press pump and the control valve.
4. mixing drum driving device according to claim 2, wherein
The adverse current preventing portion is check valve, is set to the control valve, and be only in the forward position in the control valve
When play a role.
5. mixing drum driving device according to claim 1, wherein
The adverse current preventing portion is switching valve.
6. mixing drum driving device according to claim 5, wherein
The switching valve is using by the pilot operated formula for assisting the pilot pressure of fluid press pump supply and switching over
Switching valve.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-251674 | 2015-12-24 | ||
| JP2015251674A JP6335870B2 (en) | 2015-12-24 | 2015-12-24 | Mixer drum drive device |
| PCT/JP2016/086726 WO2017110525A1 (en) | 2015-12-24 | 2016-12-09 | Mixer drum drive device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108430828A true CN108430828A (en) | 2018-08-21 |
| CN108430828B CN108430828B (en) | 2020-08-14 |
Family
ID=59090147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680075943.8A Expired - Fee Related CN108430828B (en) | 2015-12-24 | 2016-12-09 | Stirring roller driving device |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP6335870B2 (en) |
| CN (1) | CN108430828B (en) |
| AU (1) | AU2016378702B2 (en) |
| NZ (1) | NZ743898A (en) |
| WO (1) | WO2017110525A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SG11202009829TA (en) * | 2018-04-02 | 2020-11-27 | Carrier Corp | Flush pump and hydraulic system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0333803Y2 (en) * | 1985-11-20 | 1991-07-17 | ||
| JPH0893707A (en) * | 1994-09-29 | 1996-04-09 | Shin Caterpillar Mitsubishi Ltd | Hydraulic device of motor-driven type construction machine |
| JP2000272405A (en) * | 1999-03-23 | 2000-10-03 | Kayaba Ind Co Ltd | Hydraulic circuit for driving mixer drum |
| CN103097194A (en) * | 2011-03-24 | 2013-05-08 | 萱场工业株式会社 | Mixer drum driving device |
| CN104203644A (en) * | 2012-03-22 | 2014-12-10 | 萱场工业株式会社 | Mixer drum drive device |
-
2015
- 2015-12-24 JP JP2015251674A patent/JP6335870B2/en active Active
-
2016
- 2016-12-09 NZ NZ743898A patent/NZ743898A/en not_active IP Right Cessation
- 2016-12-09 AU AU2016378702A patent/AU2016378702B2/en not_active Ceased
- 2016-12-09 CN CN201680075943.8A patent/CN108430828B/en not_active Expired - Fee Related
- 2016-12-09 WO PCT/JP2016/086726 patent/WO2017110525A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0333803Y2 (en) * | 1985-11-20 | 1991-07-17 | ||
| JPH0893707A (en) * | 1994-09-29 | 1996-04-09 | Shin Caterpillar Mitsubishi Ltd | Hydraulic device of motor-driven type construction machine |
| JP2000272405A (en) * | 1999-03-23 | 2000-10-03 | Kayaba Ind Co Ltd | Hydraulic circuit for driving mixer drum |
| CN103097194A (en) * | 2011-03-24 | 2013-05-08 | 萱场工业株式会社 | Mixer drum driving device |
| CN104203644A (en) * | 2012-03-22 | 2014-12-10 | 萱场工业株式会社 | Mixer drum drive device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017110525A1 (en) | 2017-06-29 |
| AU2016378702A1 (en) | 2018-07-12 |
| NZ743898A (en) | 2019-05-31 |
| JP6335870B2 (en) | 2018-05-30 |
| CN108430828B (en) | 2020-08-14 |
| JP2017114288A (en) | 2017-06-29 |
| AU2016378702B2 (en) | 2019-03-28 |
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Granted publication date: 20200814 Termination date: 20211209 |