CN205292268U - Working vehicle - Google Patents
Working vehicle Download PDFInfo
- Publication number
- CN205292268U CN205292268U CN201521034439.2U CN201521034439U CN205292268U CN 205292268 U CN205292268 U CN 205292268U CN 201521034439 U CN201521034439 U CN 201521034439U CN 205292268 U CN205292268 U CN 205292268U
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- Prior art keywords
- stream
- radiator
- motor
- operation van
- working oil
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- 238000001816 cooling Methods 0.000 claims abstract description 49
- 230000007246 mechanism Effects 0.000 claims description 23
- 230000005540 biological transmission Effects 0.000 claims description 19
- 230000002441 reversible effect Effects 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 230000010355 oscillation Effects 0.000 abstract 1
- 238000009987 spinning Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 86
- 238000005520 cutting process Methods 0.000 description 26
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 13
- 210000000635 valve cell Anatomy 0.000 description 10
- 238000003306 harvesting Methods 0.000 description 8
- 240000008042 Zea mays Species 0.000 description 7
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 description 7
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 7
- 230000008859 change Effects 0.000 description 7
- 235000009973 maize Nutrition 0.000 description 7
- 210000000582 semen Anatomy 0.000 description 7
- 238000005276 aerator Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000012216 screening Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 230000010349 pulsation Effects 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000002828 fuel tank Substances 0.000 description 4
- 230000000740 bleeding effect Effects 0.000 description 3
- 235000013339 cereals Nutrition 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000013340 harvest operation Methods 0.000 description 3
- 239000010902 straw Substances 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000001095 motoneuron effect Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Motor Power Transmission Devices (AREA)
- Control Of Fluid Gearings (AREA)
Abstract
The utility model provides a working vehicle, this working vehicle constitute and do, in the hydraulic motor's that switches drive cooling fan corotation during with the reversal, can not arouse and strike and too big pressure oscillation and smoothly switch cooling fan's spinning movement. Overflow flow path that formation has overflow valve (55) with the suction flow path that sucks with check valve (59) has, oily discharge to the oil tank of working (47) of will working during the overpressure of this overflow valve (55) party in hydraulic motor's (M) a pair of motor flow path (51), this work oil that the party of check valve in a pair of motor flow path (51) reaches will work oil tank (47) for the suction under negative pressure's the circumstances aspirates to motor flow path (51).
Description
Technical field
This utility model relates to the use of fluid motor-driven for supplying the Operation Van of the cooling fan of cooling air to radiator.
Background technology
As Operation Van, if for united reaper, then have when operation owing to utilizing cooling fan to bleed, and make the dust such as straw be adsorbed in the Air Filter of radiator, thus causing the situation that cooling performance reduces. In order to suppress such unfavorable condition, Patent Document 1 discloses following technology, make cooling fan reverse at set time intervals, will attach to the dust such as the straw of Air Filter and blow and fly.
In this patent documentation 1, disclose following technology, possesses the electromagnetic valve that the working oil supplied from hydraulic pump to hydraulic motor is controlled, and switch over whenever electromagnetic valve is operated the flow direction of the working oil with the supply of opposite hydraulic pressure motor by the setting time, thus the direction of rotation of hydraulic motor is switched over.
In patent documentation 2, although different from for blowing the purpose flying the dust such as straw, but disclose the technology of the switching of the forward and reverse being operated by switching valve and carry out cooling fan. In this patent documentation 2, disclose the flow path that makes hydraulic motor and be communicated in the freely rotatable position (free-turning valve position) between the backward position (reversible valve position) that the forward position (positive rotary valve position) carrying out rotating forward in switching valve and carrying out reverses via throttle orifice.
Patent documentation 1:(Japan) No. 8144755 publications of Unexamined Patent
Patent documentation 2:(Japan) No. 2004251124 publications of Unexamined Patent
If the flow passage structure for patent documentation 1, then electromagnetic valve is the electromagnetic valve of the bivalve position switch type of forward valve position and reversion valve position, when the direction of the supply of working oil being switched over by the operation of electromagnetic valve, hydraulic motor is made to rotate because cooling down the inertia of fan after this switching, hydraulic motor plays the function of hydraulic pump, therefore causes that fluid is relative to the phenomenon to hydraulic motor supply or the flow path continuation flowing discharging working oil from hydraulic motor.
That is, when the valve position of switching solenoid valve, in the centre position of two valve positions, working oil only racks up full cut-off relative to the supply of a flow path of hydraulic motor, and not only that hydraulic motor effect is big brake force also makes hydraulic motor rotate because cooling down the inertia of fan. Therefore, not only produce pulsation pressure a side of a flow path, and the stream of the opposing party becomes negative pressure, thus causing that hydraulic motor is damaged, or working oil leakage.
On the other hand, as shown in patent documentation 2, when the switching valve of the rotation controlling hydraulic motor being operated between forward position and backward position, when by freely rotatable position, working oil is allowed to flow between a flow path of hydraulic motor, therefore suppress on stream, produce pulsation pressure or negative pressure, and the switching of the direction of rotation of hydraulic motor can be carried out.
But, even if in the switching valve shown in patent documentation 2, when switching at a high speed between forward position and backward position, freely rotatable position is function hardly, exists and improves leeway.
Utility model content
The purpose of this utility model is in that to constitute a kind of Operation Van, even if the hydraulic motor driving cooling fan is switched between rotating and reverse, without causing impact or the change of excessive hydraulic pressure.
Of the present utility model being characterised by, Operation Van possesses: the radiator that the cooling water of electromotor is cooled down; It is configured at than described radiator more by the Air Filter outside body; It is configured at the cooling fan more leaning on inside body and supplying to described radiator cooling air than described radiator; Drive the hydraulic motor of described cooling fan;
Described Operation Van possesses: by described engine-driven hydraulic pump; To the rotary control valve being controlled to the working oil that described hydraulic motor supplies from this hydraulic pump;
Described hydraulic motor is configured to the direction the opposing party flowing by making working oil from a pair motor stream and rotates forward, and by making working oil reverse to the flowing of its rightabout, described rotary control valve selects motor stream supply working oil described in a pair,
Connection stream is being possessed between motor stream and operating oil tank described in a pair.
Such as, when shown in patent documentation 1 when switching valve between positive rotary valve position and reversible valve position, in the centre of each valve position, form working oil and rack up full cut-off situation only relative to the supply of a flow path of hydraulic pump. Hydraulic motor also continues because of inertia to rotate in this case, therefore causes that the side's pressure in a flow path rises and becomes big, and the opposing party becomes the phenomenon of negative pressure.
On the other hand, according to features described above structure, when the direction of rotation of hydraulic motor being switched over by the operation of rotary control valve, the working oil of the stream that pressure in a pair motor stream rises can be sent to operating oil tank via connection stream, and the stream becoming negative pressure is supplied the working oil of operating oil tank. Therefore being constructed as follows Operation Van, even if the hydraulic motor driving cooling fan is switched between rotating and reverse, this Operation Van impacts and the change of excessive hydraulic pressure without causing.
This utility model can be formed as, and described connection stream is configured to the overflow stream possessing overflow valve, and described overflow valve opens owing to the pressure of described motor stream rises, and working oil is expelled to described operating oil tank.
Thus, by the control of rotary control valve, the direction of rotation of hydraulic motor being switched over, when the pressure of the motor stream of a side rises, the working oil of motor stream is expelled to operating oil tank and pressure can be suppressed to rise by overflow valve.
This utility model can be formed as, and described overflow stream possesses: first be connected respectively with motor stream described in a pair connects stream; Only allow the overflow check-valves that working oil flows to discharge direction from this first connection stream; Make to flow through the single interflow stream at the working oil interflow of these overflow check-valves; And on this interflow stream, it is connected to overflow valve.
Thus, even if the pressure of any one rises in a pair motor stream, when its pressure rises to bigger than oil pressure relief, it is possible to the working oil of motor stream is connected stream from first and discharges via single overflow valve. Further, since possess overflow check-valves, so also being able to avoid when the common action of hydraulic motor working oil from a stream to the unfavorable condition of another flow path.
This utility model can be formed as, described connection stream is configured to the suction passage possessing suction check-valves, described suction check-valves opens by making described motor stream become negative pressure, and is supplied to described motor stream by the working oil of described operating oil tank.
Thus, by the control of rotary control valve, the direction of rotation of hydraulic motor being switched over, when the motor stream of a side becomes negative pressure, suction is open with check-valves and is supplied to motor stream by the working oil of operating oil tank such that it is able to eliminate negative pressure.
This utility model can be formed as, and described suction passage possesses: the suction flow path connected with described operating oil tank; The branch flow passage that the working oil branch aspirated by this suction flow path is carried; Second be connected respectively with motor stream described in a pair connects stream; And described suction check-valves is positioned at connection described branch flow passage and the described second position being connected stream from described branch flow passage to the described second state connecting flow path allowing working oil.
Thus, any one in a flow path becomes negative pressure, by making the be connected with this stream second suction check-valves connecting stream open, and this stream can be supplied the working oil of operating oil tank. Further, since possess suction check-valves, so also being able to avoid when the common action of hydraulic motor working oil from the stream of a side to the unfavorable condition of the flow path of the opposing party.
This utility model can be formed as, and the axle center of the output shaft of described electromotor is set to the attitude of the left and right directions along body, is more being configured with described cooling fan and described radiator by the position outside body than described electromotor,
Described output shaft is configured at side contrary with described radiator on the left and right directions of described body, utilizing the countershaft that the driving force from this output shaft rotates to be configured to the attitude of the left and right directions along described body, the driving force from the outer end position of this countershaft is passed to described hydraulic pump.
Thus, though the output shaft of the electromotor side that to be configured on the left and right directions of body contrary with radiator, it is also possible to via countershaft, the driving force of output shaft is transferred to hydraulic pump. It addition, according to this structure, it is possible to by close to hydraulic pump and hydraulic motor configuration, therefore it also is able to shorten the flow path length between hydraulic pump and hydraulic motor.
This utility model can possess the travel transmission mechanism of the travel transmission case that the driving force of described countershaft is transferred to described body.
Thereby, it is possible to the driving force of countershaft is transferred to travel transmission case via travel transmission mechanism, body is made to travel.
This utility model can be formed as, and described cooling fan and described hydraulic motor are arranged in position on the above-below direction of described electromotor, side more top than middle position.
Thus, by by heat sink arrangements in higher position, it is possible to suppress operation time dust be sucked into the unfavorable condition on radiator.
This utility model can be formed as, and described radiator and described hydraulic motor are bearing on the radiator bearer being erected on described body, and described hydraulic pump is arranged in and described radiator bearer adjoining position.
Thus, it is supported on radiator bearer by radiator and hydraulic motor, and is able to maintain that the position relationship that radiator is relative with hydraulic motor. Alternatively, it is also possible to hydraulic pump to be disposed in proximity to the position of hydraulic motor, and easily possesses the stream between hydraulic pump and hydraulic motor.
This utility model can be formed as, and described operating oil tank is arranged near the radiator bearer supporting described radiator.
Thereby, it is possible to shorten the stream for the working oil to hydraulic pump supply operating oil tank.
Accompanying drawing explanation
Fig. 1 is the side view that maize harvesting machine is overall.
Fig. 2 indicates that the top view of the drive mechanism of maize harvesting machine.
Fig. 3 indicates that the top view of electromotor, radiator and cooling fan.
Fig. 4 indicates that the longitudinal section of electromotor, radiator and cooling fan.
Fig. 5 indicates that radiator bearer and the axonometric chart of cooling fan.
Fig. 6 is the hydraulic circuit diagram driving hydraulic motor.
Description of reference numerals
22 countershafts
22a travel transmission mechanism (the second travel transmission mechanism)
31 radiators
33 Air Filters
34 cooling fans
40 radiator bearers
47 operating oil tanks
51 motor streams
52 first connect stream
53 overflow check-valves
54 interflow streams
55 overflow valves
56 suction flow path (case stream)
58 second connect stream
57 branch flow passage
59 suction check-valves
E-engine
F body (travel machine body)
M hydraulic motor
P hydraulic pump
V rotary control valve
Detailed description of the invention
Hereinafter, based on accompanying drawing, embodiment of the present utility model is illustrated.
(basic structure)
The maize harvesting machine of wheels travel type is illustrated in FIG as an example of Operation Van. This maize harvesting machine has the travel machine body F utilizing pair of right and left front vehicle wheel 1 and pair of right and left rear wheel 2 to travel, and possesses driver's cabin 3 in the forward position of this travel machine body F.
It addition, as shown in the drawing, travel machine body F carries out harvest operation while travelling towards front X, and in travel machine body F, the end of front X is front end. It addition, in travel machine body F, the reciprocal end of front X is rear end. And, operating personnel towards under the attitude of front X, the right side of operating personnel is the right side of travel machine body F, and the left side of operating personnel is the left side of travel machine body F.
In this utility model, as Operation Van, it is possible to be applicable to the maize harvesting machine not possessing aftermentioned apparatus for peeling off 15, it is also possible to be applicable to the Operation Vans such as wheel type combine harvester comprehensively.
Lifting freely possess results portion A in the front end of travel machine body F, possessing the conveyer device 5 carrying the cutting (Semen Maydis by bract package status) by results portion A results rearwardly and upwardly from the front end of travel machine body F to the position of central authorities. In this conveyer device 5, possess and a part for the leaf being mixed in the cutting being transferred and stem is blown the aerator 6 flown. Possess in the middle position of travel machine body F: from the cutting being transferred device 5 supply, remove the cutting process portion B of bract; Retain the cutting storehouse 7 of the Semen Maydis being removed bract by this cutting process portion B. It addition, in the downside of travel machine body F, possess residual stalk in the centre of front vehicle wheel 1 and rear wheel 2 and process device C.
Travel machine body F possesses the cab legs 9 of pair of right and left frame 8 and this forward position extended forwards, backwards. It is supported with electromotor E in the middle position of the fore-and-aft direction of frame 8, possesses the travel transmission case 11 driving front vehicle wheel 1 in the forward position of this frame 8. Rear wheel 2 is configured to turn to operation freely. It addition, the driving force possessing since engine E in the future in travel machine body F is transferred to the drive system of travel transmission case 11, results portion A or cutting process portion B etc. Below the detailed construction of this drive system is illustrated.
Cab legs 9 is arranged in the position higher than frame 8 supporting driver room 3.Driver's cabin 3 has the usual structure possessing front glass, the door of left and right and top board, possesses the driver's seat taken a seat for operating personnel in inside. Near driver's seat, it is configured with steering wheel, controls the action bars base part of travel machine body traveling or control the action bars base part of operation.
Results portion A possesses multiple nearside divider 12 in front position, and possessing multiple conveying mechanisms 13 that cutting is separated from the paddy stalk in the centre position importing to these nearside dividers 12 and rearward carried, possessing the screw feeder 14 rotated centered by the axle center of lateral attitude in order to the cutting being transferred being transferred to the middle position of left and right directions. Conveyer device 5 has the structure for conveying of belt in the inside of tube-like envelope, supplies the cutting from screw feeder 14 to cutting process portion B.
In cutting process portion B, it is configured with apparatus for peeling off 15, vibrating screen screening device 16 and returnable 17 with position relationship overlapping up and down. In this cutting process portion B, apparatus for peeling off 15 removes bract from the cutting supplied by conveyer device 5, and the Semen Maydis removing bract is sent into cutting storehouse 7. In this cutting process portion B, utilizing vibrating screen screening device 16 to carry out swinging screening to a part of seed grain that the bract separated in apparatus for peeling off 15 separates with from Semen Maydis, bract is discharged to outside body, and seed grain is recycled to returnable 17.
Residual stalk processes device C and possesses multiple chopping cutter 18A relative to the process axle 18 of lateral attitude, and has they are accommodated in the structure within treatment box 19 open downwards. Utilizing this structure to be handled as follows, process axle 18 by driving and rotate, chopping cutter 18A chops the residual stalk on surface, field off chopping so that it is be diffused in soil.
(drive mechanism)
As shown in Figure 2 to 4, electromotor E is set to the attitude making bent axle along the left and right directions of travel machine body F, and the output shaft transmitted from the driving force of bent axle is set in the side contrary with radiator 31, this output shaft possesses multiple electromotor output pulley 21.
As shown in Figure 2 and Figure 3, with electromotor E for benchmark, being configured with the countershaft 22 of the attitude along body left and right directions on front side of body, the inner end positions at this countershaft 22 possesses the first traveling drive mechanism 22a of the belt of the driving force transmitting since engine output pulley 21. It addition, possess the second travel transmission mechanism 22b of the belt of the power shaft 11a that the driving force of the outer end position from countershaft 22 is transferred to travel transmission case 11.
Travel transmission case 11 possesses hydrostatic stepless speed change device, and it carries out speed change to from the electromotor E driving force come via the second travel transmission mechanism 22b transmission and be transferred to the front vehicle wheel 1 of left and right. Hydrostatic stepless speed change device is configured to infinitely regulate advance travel speed and retreat travel speed, can change travel speed by carrying out variable speed operation from the inside of driver's cabin 3.
As in figure 2 it is shown, possess the jackshaft 23 of the attitude parallel with the output shaft of electromotor E, between electromotor output pulley 21 and jackshaft 23, possesses the operation clutch 24 with tension type that the driving force made to jackshaft 23 is interrupted. As the drive mechanism that the driving force of jackshaft 23 is transferred to results portion A, possesses the first results drive mechanism 25a of belt and the second results drive mechanism 25b of chain type. It addition, in results portion A, possess torque limiter TL transmitting the position from the second driving force gathering in the crops drive mechanism 25b.
It addition, as the drive mechanism that the driving force of jackshaft 23 is transferred to cutting process portion B, possess the belt driving axle 6a that the driving force of jackshaft 23 is transferred to aerator 6 first processes drive mechanism 26a. And, possess: the driving force driving axle 6a from aerator 6 is transferred to the second process drive mechanism 26b of the chain type of apparatus for peeling off 15; This driving force is transferred to the 3rd process drive mechanism 26c of the chain type of vibrating screen screening device 16. Torque limiter TL is possessed between drive mechanism 26b and the 3rd process drive mechanism 26c it addition, process second.
Conveyer device 5 is configured to, and possesses axis body in the position, top of conveying direction and terminal location, and the conveyer belt possessing the structure of plate etc. on the chain be wound in these axis bodies is accommodated in tubular shell. Terminal location at this conveyer device possesses discharger 27, and this discharger 27 has a pair rotary part that the part etc. being mixed into the leaf processing thing and the stem carried by conveyer device 5 is clamped and discharged it.
In conveyer device 5, the axis body of feeding terminal position is configured to conveying power shaft 5a, drive the rotating shaft that the rotary part of discharger 27 rotates to be configured to discharge device power shaft 27a, possess the conveying drive 28 of the chain type that this discharge device power shaft 27a is transmitted the driving force driving axle 6a from aerator 6.
And, process the process axle 18 of device C in order to the driving force of jackshaft 23 being transferred to residual stalk, and possess the residual stalk employing gear and band and process drive mechanism 29.
(harvesting approach)
Due to such drive mechanism, in maize harvesting machine, it is possible to by the operation of the operating personnel of the inside of driver's cabin 3, the driving force of electromotor E is transferred to the front vehicle wheel 1 of left and right to make travel machine body F travel from travel transmission case 11.
Access operation is carried out, it is possible to results portion A, conveyer device 5, aerator 6, cutting process portion B and residual stalk are processed device C and transmits the driving force of electromotor E such that it is able to carry out harvest operation additionally by operation clutch 24. In this harvest operation, in results portion A, cutting (Semen Maydis by bract package status) being gathered in the crops, this cutting is supplied to cutting process portion B by conveyer device 5. When utilizing conveyer device 5 to carry cutting, a part etc. for the leaf and stem that are mixed into cutting is discharged device 27 and sends, and is discharged to engine body exterior by the blast of aerator 6 simultaneously.
In cutting process portion B, in apparatus for peeling off 15, bract is removed from cutting, the Semen Maydis removing bract is sent into cutting storehouse 7, and bract is discharged engine body exterior. It addition, in apparatus for peeling off 15, after swinging screening vibrating screen screening device 16 from a part of seed grain of Semen Maydis separation, be recovered to returnable 17. It addition, the paddy stalk residuing in surface, field processes to be processed in the way of device C shreds and is diffused in soil by residual stalk.
(radiator)
As shown in Fig. 3��Fig. 5, the radiator bearer 40 possessed on the right side of frame 8 is supported with radiator 31 and housing 32 of bleeding. Radiator 31 is configured at than electromotor E more by outside body, and the middle position of its above-below direction is set in the position that the middle position of the above-below direction than electromotor E is high simultaneously. It addition, the outer surface at housing 32 of bleeding possesses Air Filter 33, the rear side at radiator 31 is configured with cooling fan 34, and the position at this cooling fan 34 of encirclement and the rear side at radiator 31 possess fan shroud 35.Radiator 31 is configured to be connected with electromotor E via pair of heat sinks pipe 36, and the cooling water carrying out since engine E carries out cooling so as to return engine E.
Although not shown in the accompanying drawings, but it is accommodated with the oil cooler of the heat radiation being operated oil and the condenser of the heat radiation carrying out cold-producing medium in the inside of housing 32 of bleeding.
Radiator bearer 40 possesses: the auxiliary stand 41 stretched out laterally from frame 8; It is erected on auxiliary stand 41 upper surface and is formed as the front and back pair of posts shape support 42 of pillar-shaped; The top towards front and back attitude linked with the upper end of this pair of posts shape support 42 links support 43. It addition, radiator bearer 40 possesses a pair auxiliary upper support 44 that the centre position of fore-and-aft direction from top link support 43 and the two position, position of front extend inside body.
And, radiator bearer 40 at the pillar-shaped support 42 on front side of body for benchmark by possessing jury strut shape support 45 inside body, and the upper end of the auxiliary upper support 44 on front side of body and this jury strut shape support 45 links. The lateral frame 45a rearward extended from the centre position of jury strut shape support 45 is connected to each other with the external part of the longitudinal support 44a that the auxiliary upper support 44 from middle position extends downwards. Hydraulic motor M is supported on this bond sites via motor bracket 37, and the output shaft of cooling fan 34 and this hydraulic motor M links.
Cooling down fan 34 by the hydraulic motor M forward direction to suction cooling air and the reverse directions driving discharging cooling air, the hydraulic pump P to hydraulic motor M supply working oil is arranged in the neighbouring position of the pillar-shaped support 42 of front side. This hydraulic pump P is supported on frame 8 via pump support 38, and driving axle and the countershaft 22 of hydraulic pump P are linked by flexible couplings 39 such as elastomer connectors.
Owing to the axle center driving axle of hydraulic pump P and the axle center of countershaft 22 are configured at same axis in the heart, so forming elongated hole relative to the supporting parts of pump support 38 or frame 8, by inserting bolt to it, and the position adjustments to body fore-and-aft direction can be carried out. It addition, the position adjustments of above-below direction is to sandwich partition between the supporting parts of pump support 38 and frame 8.
(control structure of hydraulic motor)
In this maize harvesting machine, being configured to the lubricating oil being stored within travel transmission case 11 is used as working oil, this travel transmission case 11 is also used as the main fuel tank of working oil. It addition, frame 8 near radiator bearer 40 is configured with the operating oil tank 47 less than main tank capacity, valve cell VU and accumulator. It addition, represent the hydraulic circuit being made up of hydraulic pump P, hydraulic motor M and valve cell VU in figure 6.
Operating oil tank 47 is configured to storage all the time a certain amount of working oil, and is configured to working oil and flows between main fuel tank (travel transmission case 11). It addition, be formed with the stream of the working oil of hydraulic pump P suction operation fuel tank 47; To valve cell VU supply from the stream of the working oil of hydraulic pump P; The stream that working oil from valve cell VU is discharged to operating oil tank 47. And, between valve cell VU and hydraulic pump P, it is formed with a pair motor stream 51. These streams are made up of special pipe arrangement.
Valve cell VU possesses rotary control valve V. This rotary control valve V is configured to electromagnetic valve, and this electromagnetic valve possesses the guiding valve freely switching to positive rotary valve position and this two valves position, reversible valve position and operates the o of this guiding valve. Travel machine body F possesses the control device 48 that electromagnetic valve exports control signal.Rotary control valve V maintains positive rotary valve position to o when not powering, and is set as reversible valve position by powering to o. It addition, control device 48 possess the control loop and software with microprocessor or DSP etc., it is operated by rotary control valve V, controls the direction of rotation of cooling fan 34.
Control device 48 and such as carry out the control of three minutes forward direction driving cooling fans 34 to suction cooling air, carry out driving to the reverse directions discharging cooling air for ten seconds the control of cooling fan 34, and repeat these control. Especially, owing to carrying out the switching of the direction of rotation of hydraulic motor M, so when operating the guiding valve of rotary control valve V, occurring hardly hydraulic motor M being supplied work oil condition in positive rotary valve position and the middle of reversible valve position.
Additionally, when operation clutch 24 is off, cooling fan 34 is driven to rotate forward, only when operation clutch 24 is carried out access operation, control mode is set to the switching that cooling fan 34 is rotated and reverse but it also may the state of operation clutch 24 all carries out this switching rotated and reverse.
So, hydraulic motor M is not supplied in intermediate valve position working oil and discharges work oil condition from hydraulic motor M, brake force that can be big to hydraulic motor M effect, thus cannot be carried out slowing down smoothly, cause vibration or impact, cause unfavorable condition. Especially, when the direction of rotation cooling down fan 34 is switched over, hydraulic motor M to rotate because of inertia, therefore working oil or side's generation pulsation pressure (acting on excessive pressure) from a pair motor stream 51 of hydraulic motor M discharge working oil are being supplied to hydraulic motor M, produce negative pressure the opposing party, and cause that working oil is from the breakage of stream leakage or stream.
In order to eliminate this unfavorable condition, the valve cell VU shown in Fig. 6 possesses pressure differential and suppresses loop. This pressure differential suppresses loop to possess overflow stream and suction passage, and hydraulic motor M is being supplied working oil or from being configured to connection stream between a pair motor stream 51 and the operating oil tank 47 of hydraulic motor M discharge working oil by them.
Overflow stream possesses: first be connected with a pair motor stream 51 connects stream 52; The overflow check-valves 53 in the downstream of these the first connection streams 52; Make the interflow stream 54 that the working oil from a pair overflow check-valves 53 collaborates; The overflow valve 55 being connected with this interflow stream 54. In this overflow stream, only when the pressure of motor stream 51 rises, the working oil of this motor stream 51 is made to be expelled to operating oil tank 47 from overflow valve 55 via case stream 56. Additionally. The direction of overflow check-valves 53 is set to stop the flowing of reverse working oil.
Suction passage is configured to possess: the case stream 56 (example of suction flow path is used for the discharge system of the working oil from overflow valve 55) connected with operating oil tank 47; Branch flow passage 57 from case stream 56 branch; Second be connected with a pair motor stream 51 connects stream 58; It is positioned at the suction check-valves 59 of the position linking branch flow passage 57 and the second connection stream 58. In this suction passage, the direction of suction check-valves 59 is set to only when the pressure of motor stream 51 reduces, it is possible to suck the working oil of operating oil tank 47 relative to this motor stream 51.
So connection stream is configured to possess: constitutes the first of overflow stream and connects stream 52, overflow check-valves 53, interflow stream 54 and overflow valve 55, is provided simultaneously with constituting the case stream 56 of suction passage, branch flow passage 57, second connects stream 58 and suction check-valves 59.
It addition, in this hydraulic circuit, it is also possible on valve cell VU, only possess the side in overflow stream and suction passage. Alternatively, it is also possible to be configured to do not possess operating oil tank 47, and directly feed the working oil of discharge main fuel tank relative to valve cell VU.
According to this structure, when switching the valve position of guiding valve of rotary control valve V, on the motor stream 51 of a side, effect has pulsation pressure, connect stream 52, overflow check-valves 53 and interflow stream 54 to be connected with this motor stream 51 first to flow, make overflow valve 55 open and be expelled to operating oil tank 47 from case stream 56. Thus, the pressure of the motor stream 51 of a side will not excessively rise.
Additionally, when switching the valve position of guiding valve of rotary control valve V, on another motor stream 51, effect has negative pressure, the suction check-valves 59 being connected stream 58 connection be connected to this motor stream 51 second is open, the working oil of operating oil tank 47 flows to branch flow passage 57 from case stream 56, flow to another motor stream 51 via the suction check-valves 59 and the second connection stream 58 that are in open state, alleviate the effect of negative pressure.
Thus, even if when operation timed unit 48 utilize rotary control valve V hocket drive hydraulic motor M rotate forward control and drive hydraulic motor M reversion control, quickly stop without the rotation making cooling fan 34, and can slow down swimmingly when allowing inertial rotation and stop, then making to increase to the rightabout rotary speed of hydraulic motor M.
(action effect of embodiment)
Hydraulic motor M is utilized to carry out supplying the rotation of the cooling fan 34 of cooling air to radiator 31, the direction of rotation of hydraulic motor M is switched by the supply emission direction of switch operating oil, therefore, compared with the structure using the switching direction of rotation such as clutch and gear, simplify the structure.
Additionally, owing to the special hydraulic pump P from working oil to hydraulic motor M and special rotary control valve V that supply are configured near hydraulic motor M, it is possible to shorten the stream pipe arrangement discharged for the supply being operated oil, thus also being able to make the further miniaturization of drive system of cooling fan 34.
Forming overflow stream and suction passage, this overflow stream makes to reduce relative to the pressure of the side in a pair motor stream 51 of hydraulic motor M supply discharge working oil; The working oil of operating oil tank 47 is supplied to motor stream 51 when reaching negative pressure state by this suction passage the opposing party in a pair motor stream 51. Utilize this structure, when being switched the direction of rotation of hydraulic motor M by the operation of rotary control valve V, on the motor stream 51 of a side, effect has pulsation pressure, the working oil of this motor stream 51 is expelled to operating oil tank 47 via overflow valve 55 such that it is able to suppress working oil excessively to rise. It addition, on the motor stream 51 of a side when negative pressure, this motor stream 51 is supplied via case stream 56 working oil of operating oil tank 47 such that it is able to make pressure increase. Thus, even if the hydraulic motor driving cooling fan is switched between rotating and reverse, impact and the change of excessive hydraulic pressure without causing.
Valve cell VU possesses rotary control valve V, and possesses overflow stream and suction passage, therefore can not possess overflow valve 55, overflow check-valves 53, suction check-valves 59 in outside, and flow passage structure is simplified.
Pump support 38 position adjustments is supported on frame 8 freely, therefore, it is possible to easily carry out countershaft 22 power shaft with hydraulic pump P to the heart.It addition, be also configured to when the heart is moved slightly away from, flexible coupling 39 can absorb bias.
Industrial applicibility
This utility model can apply to the Operation Van of the direction of rotation utilizing hydraulic motor to fan to positive anti-switching cooling air.
Claims (16)
1. an Operation Van, it is characterised in that possess: the cooling radiator (31) that cools down of water to electromotor (E); It is configured at than described radiator (31) more by the Air Filter (33) outside body; It is configured at the cooling fan (34) more leaning on inside body and supplying to described radiator (31) cooling air than described radiator (31); Drive the hydraulic motor (M) of described cooling fan (34);
Described Operation Van possesses: the hydraulic pump (P) driven by described electromotor (E); To the rotary control valve (V) being controlled from this hydraulic pump (P) to the working oil that described hydraulic motor (M) supplies;
Described hydraulic motor (M) is configured to the direction the opposing party flowing by making working oil from a pair motor stream (51) and rotates forward, reverse by making working oil flow round about, described rotary control valve (V) selects motor stream (51) supply working oil described in a pair
Connection stream is being possessed between motor stream (51) and operating oil tank (47) described in a pair.
2. Operation Van according to claim 1, it is characterised in that
Described connection stream is configured to the overflow stream possessing overflow valve (55), described overflow valve (55) opens owing to the pressure of described motor stream (51) rises, and working oil (47) is expelled to described operating oil tank (47).
3. Operation Van according to claim 2, it is characterised in that
Described overflow stream possesses: first be connected respectively with motor stream (51) described in a pair connects stream (52); Only allow overflow check-valves (53) that working oil flows to discharge direction from this first connection stream (52); Make to flow through the single interflow stream (54) at the working oil interflow of these overflow check-valves (53); And on this interflow stream (54), it is connected to overflow valve (55).
4. Operation Van according to claim 1, it is characterised in that
Described connection stream is configured to the suction passage possessing suction check-valves (59), described suction check-valves (59) becomes negative pressure due to described motor stream (51) and opens, and is supplied to described motor stream (51) by the working oil of described operating oil tank (47).
5. Operation Van according to claim 4, it is characterised in that
Described suction passage possesses: the suction flow path connected with described operating oil tank (47); The branch flow passage (57) that the working oil branch aspirated by this suction flow path is carried; Second be connected respectively with motor stream (51) described in a pair connects stream (58); And the state that described suction check-valves (59) is flowed to described second connection stream (58) from described branch flow passage (57) to allow working oil is positioned at the described branch flow passage of connection (57) and the described second position being connected stream (58).
6. the Operation Van according to any one in Claims 1 to 5, it is characterised in that
The axle center of the output shaft of described electromotor (E) is set to the attitude of the left and right directions along body (F), more it is being configured with described cooling fan (34) and described radiator (31) by the position outside body than described electromotor (E)
The described output shaft side that to be configured on the left and right directions of described body (F) contrary with described radiator (31), the countershaft (22) rotated based on the driving force from this output shaft is configured to the attitude of the left and right directions along described body, and the driving force from the outer end position of this countershaft (22) is passed to described hydraulic pump (P).
7. Operation Van according to claim 6, it is characterised in that
Described Operation Van possesses the travel transmission mechanism (22a) of the travel transmission case (11) that the driving force of described countershaft (22) is transferred to described body (F).
8. according to Claims 1 to 5, Operation Van described in any one in 7, it is characterised in that
Described cooling fan (34) and described hydraulic motor (M) are arranged in position on the above-below direction of described electromotor (E), side more top than middle position.
9. Operation Van according to claim 6, it is characterised in that
Described cooling fan (34) and described hydraulic motor (M) are arranged in position on the above-below direction of described electromotor (E), side more top than middle position.
10. according to Claims 1 to 5, Operation Van described in any one in 7,9, it is characterised in that
Described radiator (31) and described hydraulic motor (M) are bearing on the radiator bearer (40) being erected on described body (F), and described hydraulic pump (P) is arranged in and described radiator bearer (40) adjoining position.
11. Operation Van according to claim 6, it is characterised in that
Described radiator (31) and described hydraulic motor (M) are bearing on the radiator bearer (40) being erected on described body (F), and described hydraulic pump (P) is arranged in and described radiator bearer (40) adjoining position.
12. Operation Van according to claim 8, it is characterised in that
Described radiator (31) and described hydraulic motor (M) are bearing on the radiator bearer (40) being erected on described body (F), and described hydraulic pump (P) is arranged in and described radiator bearer (40) adjoining position.
13. according to Claims 1 to 5, Operation Van described in any one in 7,9,11,12, it is characterised in that
Described operating oil tank (47) is arranged near the radiator bearer (40) supporting described radiator (31).
14. Operation Van according to claim 6, it is characterised in that
Described operating oil tank (47) is arranged near the radiator bearer (40) supporting described radiator (31).
15. Operation Van according to claim 8, it is characterised in that
Described operating oil tank (47) is arranged near the radiator bearer (40) supporting described radiator (31).
16. Operation Van according to claim 10, it is characterised in that
Described operating oil tank (47) is arranged near the radiator bearer (40) supporting described radiator (31).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-258039 | 2014-12-19 | ||
| JP2014258039A JP6345103B2 (en) | 2014-12-19 | 2014-12-19 | Work vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205292268U true CN205292268U (en) | 2016-06-08 |
Family
ID=56243996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521034439.2U Expired - Fee Related CN205292268U (en) | 2014-12-19 | 2015-12-14 | Working vehicle |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6345103B2 (en) |
| CN (1) | CN205292268U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106394709A (en) * | 2016-11-22 | 2017-02-15 | 中国重汽集团泰安五岳专用汽车有限公司 | Chassis device based on loads and traction |
| CN108826976A (en) * | 2018-07-16 | 2018-11-16 | 中冶华天工程技术有限公司 | A kind of wheel of sintering trolley advance in flexible centring device |
| CN112160952A (en) * | 2020-09-25 | 2021-01-01 | 柳州柳工挖掘机有限公司 | Hydraulic fan system and engineering machinery |
| CN114396335A (en) * | 2022-01-04 | 2022-04-26 | 东风汽车集团股份有限公司 | Wind shield and fan assembly for vehicle |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6466824B2 (en) * | 2015-12-04 | 2019-02-06 | 日立建機株式会社 | Hydraulic motor control device |
| CN113404673B (en) * | 2021-07-16 | 2022-09-02 | 牟伟 | Duplex diaphragm pump |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL174934B (en) * | 1981-07-21 | 1984-04-02 | Koopmans Luitzen B | WINCH EQUIPMENT WITH HYDRAULIC TRANSMISSION EQUIPPED WITH A PROTECTION CIRCUIT. |
| JPH08144755A (en) * | 1994-11-28 | 1996-06-04 | Kubota Corp | Radiator cooling device for working car |
| DE102005053265B4 (en) * | 2005-11-08 | 2020-07-09 | Linde Hydraulics Gmbh & Co. Kg | Hydrostatic drive system |
| JP2014167286A (en) * | 2013-02-28 | 2014-09-11 | Iseki & Co Ltd | Work vehicle |
| JP2014196717A (en) * | 2013-03-29 | 2014-10-16 | 井関農機株式会社 | Prime mover structure of working vehicle |
-
2014
- 2014-12-19 JP JP2014258039A patent/JP6345103B2/en active Active
-
2015
- 2015-12-14 CN CN201521034439.2U patent/CN205292268U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106394709A (en) * | 2016-11-22 | 2017-02-15 | 中国重汽集团泰安五岳专用汽车有限公司 | Chassis device based on loads and traction |
| CN108826976A (en) * | 2018-07-16 | 2018-11-16 | 中冶华天工程技术有限公司 | A kind of wheel of sintering trolley advance in flexible centring device |
| CN108826976B (en) * | 2018-07-16 | 2019-10-25 | 中冶华天工程技术有限公司 | A kind of wheel of sintering trolley advance in flexible centring device |
| CN112160952A (en) * | 2020-09-25 | 2021-01-01 | 柳州柳工挖掘机有限公司 | Hydraulic fan system and engineering machinery |
| CN114396335A (en) * | 2022-01-04 | 2022-04-26 | 东风汽车集团股份有限公司 | Wind shield and fan assembly for vehicle |
| CN114396335B (en) * | 2022-01-04 | 2022-12-23 | 东风汽车集团股份有限公司 | Wind shield and fan assembly for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6345103B2 (en) | 2018-06-20 |
| JP2016118153A (en) | 2016-06-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 |
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| CF01 | Termination of patent right due to non-payment of annual fee |