WO2009016884A1 - 作業車両の走行駆動装置 - Google Patents
作業車両の走行駆動装置 Download PDFInfo
- Publication number
- WO2009016884A1 WO2009016884A1 PCT/JP2008/060099 JP2008060099W WO2009016884A1 WO 2009016884 A1 WO2009016884 A1 WO 2009016884A1 JP 2008060099 W JP2008060099 W JP 2008060099W WO 2009016884 A1 WO2009016884 A1 WO 2009016884A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lubricating oil
- temperature
- speed
- mounting cylinder
- wheel mounting
- Prior art date
Links
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- 230000001050 lubricating effect Effects 0.000 claims description 82
- 230000009467 reduction Effects 0.000 claims description 54
- 230000007246 mechanism Effects 0.000 claims description 49
- 238000001514 detection method Methods 0.000 claims description 8
- 238000005461 lubrication Methods 0.000 abstract description 94
- 239000000314 lubricant Substances 0.000 abstract description 27
- 238000000034 method Methods 0.000 description 45
- 230000008569 process Effects 0.000 description 44
- 239000003921 oil Substances 0.000 description 35
- 238000012545 processing Methods 0.000 description 33
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- 230000002093 peripheral effect Effects 0.000 description 16
- 230000000694 effects Effects 0.000 description 12
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- 238000005859 coupling reaction Methods 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 3
- 210000001217 buttock Anatomy 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
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- 238000007789 sealing Methods 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- MCOQHIWZJUDQIC-UHFFFAOYSA-N barban Chemical compound ClCC#CCOC(=O)NC1=CC=CC(Cl)=C1 MCOQHIWZJUDQIC-UHFFFAOYSA-N 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000010724 circulating oil Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
- B60W30/18—Propelling the vehicle
- B60W30/192—Mitigating problems related to power-up or power-down of the driveline, e.g. start-up of a cold engine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B11/00—Units comprising multiple wheels arranged side by side; Wheels having more than one rim or capable of carrying more than one tyre
- B60B11/06—Wheels with more than one rim mounted on a single wheel body
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B25/00—Rims built-up of several main parts ; Locking means for the rim parts
- B60B25/04—Rims with dismountable flange rings, seat rings, or lock rings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
- B60B27/02—Hubs adapted to be rotatably arranged on axle
- B60B27/04—Hubs adapted to be rotatably arranged on axle housing driving means, e.g. sprockets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
- B60B35/16—Axle housings
- B60B35/163—Axle housings characterised by specific shape of the housing, e.g. adaptations to give space for other vehicle elements like chassis or exhaust system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/46—Series type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/30—Conjoint control of vehicle sub-units of different type or different function including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
- B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K2007/0038—Disposition of motor in, or adjacent to, traction wheel the motor moving together with the wheel axle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K2007/0092—Disposition of motor in, or adjacent to, traction wheel the motor axle being coaxial to the wheel axle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/44—Drive Train control parameters related to combustion engines
- B60L2240/445—Temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
- B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
- B60W2050/143—Alarm means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0676—Engine temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2520/00—Input parameters relating to overall vehicle dynamics
- B60W2520/10—Longitudinal speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/10—Road Vehicles
- B60Y2200/14—Trucks; Load vehicles, Busses
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
Definitions
- the present invention relates to, for example, a traveling drive device of a working vehicle suitably used for a large-sized lotus carriage, dump truck, etc. for transporting crushed stone mined in a mine etc.
- the reduction gear mechanism is used
- the present invention relates to a travel drive device for a working vehicle configured to increase rotational torque during traveling.
- a large transport vehicle called a dump truck is equipped with a liftable bed cell on a frame of the vehicle body, and a large amount of heavy load such as a stone object is loaded on this bed cell, In, it is something to carry.
- the traveling drive device for driving the drive wheels of the dump truck includes a tubular axle mounted on the vehicle body and an electric motor or hydraulic motor provided on the axle housing for rotationally driving the rotation shaft.
- a driving source such as a wheel, a wheel mounting cylinder rotatably mounted on the tip side outer periphery of the axle 8 via a bearing and mounted with a traveling wheel, and the wheel mounting cylinder provided in the wheel mounting cylinder
- a multistage reduction gear mechanism for transmitting the rotation of the rotation shaft to the cylinder at a reduced speed
- the multi-step reduction gear mechanism reduces the rotational output of the drive source consisting of, for example, an electric motor to reduce the cylindrical wheel attachment cylinder.
- the drive wheels such as the front wheels or rear wheels of the vehicle to improve the transport performance of the dump truck (vehicle).
- the traveling drive system of the dump truck rack is configured such that the left and right wheels are rotationally driven independently of each other by the traveling speed reducers and the like.
- lubricating oil is stored in the cylindrical wheel mounting cylinder to which the wheels for traveling are attached in order to keep the gear members and the like of the reduction gear mechanism in a lubricating state, and this lubricating oil is
- the lubricating oil is cooled by heat exchange with an oil cooler etc. provided in the middle of the circulation path. For example, it is provided outside the axle housing.
- a suction pipe is connected to the suction side of the lubrication pump, and one side (suction ⁇ side) of the suction pipe is below the surface of the lubricating oil stored in the wheel mounting cylinder. It extends to the position to be immersed.
- a discharge pipe or a supply pipe is provided in contact with the discharge side of the lubrication pump, and the other side of the supply pipe is arranged to extend into the wheel mounting cylinder at a position above the suction pipe. It will be set up.
- the lubricating oil accumulated in the wheel mounting cylinder is accompanied by the rotation of the wheel mounting cylinder.
- the lubricating oil acts to adhere to the inner wall surface of the wheel mounting cylinder over the entire circumference in order to receive the action of the mental force. Therefore, the liquid level of the lubricating oil in the wheel mounting cylinder is the same as that of the suction pipe. It may drop to a position lower than the suction port.
- the present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to control the drive and stop of the lubricating pump according to the traveling speed of the vehicle. It is an object of the present invention to provide a travel drive system for a working vehicle that can prevent the problem and improve the life and the like.
- the present invention relates to a cylindrical wheel mounting cylinder that rotates integrally with a wheel of a work vehicle, and a wheel mounting cylinder provided in the wheel mounting cylinder and configured to rotate a drive source.
- the present invention is applied to a traveling drive device of a working vehicle including a reduction gear mechanism for decelerating and transmitting to the gear and a lubricating oil supply means for supplying lubricating oil to the reduction gear mechanism.
- the lubricating oil supplying means is an electric motor
- the lubricating oil accumulated in the wheel mounting cylinder is forcibly driven by the electric motor.
- a motor control device including: a lubricating pump to be circulated; and motor control means for controlling driving and stopping of the electric motor in accordance with the rotational speed of the wheel.
- the electric motor is driven to create a lubrication pump. It is possible to forcibly circulate the lubricating oil accumulated in the wheel mounting cylinder by moving it.
- ⁇ S) o By this, for example, the lubricating oil flowing through the circulation path to the inside and the outside of the wheel mounting cylinder.
- the oil temperature of the oil can be lowered, for example, by using an oil cracker, etc., and lubricating oil with a low oil temperature is supplied to the reduction gear mechanism in the wheel mounting cylinder to enhance the lubricating performance and the cooling performance.
- a cylindrical axle housing extending left and right is provided at the lower part of the vehicle body constituting the work vehicle, and the left and right ends of the axle housing are provided with the cylindrical axle housing.
- the wheel mounting cylinder is rotatably provided on the outer peripheral side, and the lubricating oil is accumulated at a lower position of the wheel mounting cylinder, and the lubricating oil supply means is configured to receive the wheel mounting cylinder. Suction that sucks the lubricating oil in the pump by the lubricating pump
- the system includes a pipe and a supply pipe for circulating the lubricating oil sucked by the lubricating pump into the wheel mounting cylinder, and the suction pipe is in the axle housing or in the O column.
- the lubricating oil in the wheel mounting cylinder adheres to the inner wall over the entire circumference by the action of centrifugal force. If it behaves as it does, the level of the lubricating oil may fall to a position lower than the suction port suction port, and the lubricating pump may not be able to absorb the lubricating oil. In such cases, by stopping the drive of the lubrication pump by the motor control means by the motor control means, it is possible to prevent the lubrication pump from idling and the dry operation to continue.
- the motor control device further comprises a temperature sensor for detecting the temperature of the lubricating oil and a speed sensor for detecting the rotational speed of the wheel
- the motor control means comprises:
- the electric motor is controlled in accordance with a detection signal from a sensor. It is possible to save energy by stopping the electric motor and suppressing wasteful consumption of power when the temperature of the lubricating oil detected by the temperature sensor is low. it can. Therefore, when the motor is stopped, the lubricating oil accumulated in the wheel mounting cylinder is not forced to circulate by the lubricating pump, and is lubricated by the reduction gear mechanism and not lubricated.
- the reduction gear machine can be kept in lubrication state.
- the lubricating pump is driven by the electric motor to force the forced circulation of the lubricating oil, for example, by the oil cooler
- the temperature can be lowered to improve the lubrication performance.
- the traveling speed of the vehicle was fast
- by stopping the drive of the lubricating pump by the electric motor it is possible to prevent the lubricating pump from becoming idle, and as in the invention of claim 1, the service life of the pump and lubricating oil, etc. It can be extended reliably.
- the motor control means detects that the temperature of the lubricating oil detected by the temperature sensor is higher than a predetermined judgment temperature, and is detected by the speed sensor.
- the speed of the wheel is lower than a predetermined judgment speed
- the BIJ self-powered motor is driven, and the motor control means determines that the detected temperature is lower than the judgment temperature.
- the electric motor can be configured to be stopped when the detection speed is higher than the judgment speed.
- the temperature of the lubricating oil detected by the temperature sensor is higher than the predetermined judgment temperature, and the speed of the wheel detected by the speed sensor is lower than the predetermined judgment speed.
- Drive the motorized motor and perform forced circulation of lubricating oil. Also, if the detected temperature is lower than the judgment temperature or if the detected speed is higher than the judgment speed, stopping the motor drive will prevent the lubrication pump from slipping. it can.
- the motor control means variably controls the rotational speed of the electric motor in accordance with the temperature of the lubricating oil detected by the temperature sensor.
- a cylindrical axle housing extending in the left direction is provided at the lower part of the vehicle body constituting the work vehicle, and the wheel housing is provided with the wheel housing at the left and right ends thereof.
- Each mounting cylinder is rotatably provided, and each of the temperature sensors is provided, and whether there is a temperature difference between the temperature of the lubricating oil detected by the temperature sensor on the left or 3 ⁇ 4 is compared to determine whether the temperature sensor is abnormal.
- a sensor determination means is provided.
- the traveling drive unit of the dump truck can be driven to rotate independently of each other by the traveling reduction gears etc. It is possible to easily diagnose the abnormality of sensors based on the temperature difference between left and right.
- the temperature sensor for detecting the temperature of the lubricating oil the speed sensor for detecting the rotational speed of the wheel, and the pressure sensor for detecting the discharge pressure of the lubricating pump
- the motor control means may control forward motion according to detection signals from the temperature sensor, the speed sensor and the pressure sensor.
- the detection signal of can be extracted as a signal related to the traveling speed of the vehicle, and the same effect as that of the invention of claim 1 can be obtained even when, for example, the speed sensor breaks down.
- the motor control means is configured to detect the temperature of the lubricating oil detected by the temperature sensor higher than a predetermined determination temperature, and the speed sensor When the detected wheel speed is lower than a predetermined judgment speed, the electric motor is driven, and the motor control means detects that the detected temperature is lower than the judgment temperature.
- the electric motor may be stopped when the detected speed is higher than the judgment speed, and the motor control means may be configured to discharge the lubricating pump detected by the pressure sensor. When the pressure is higher than a predetermined reference pressure, the electric motor is stopped when the electric motor is lower than the predetermined pressure.
- the lubricating pump can be prevented from slipping due to insufficient suction of lubricating oil, and a pressure sensor and a speed sensor can be used to further prevent the slipping more stably.
- FIG. 1 is a front view showing a dump rack and a rack in which a traveling drive device according to a first embodiment of the present invention is used.
- Figure 2 is a block diagram showing the traveling drive of the dump truck and the liquor.
- Figure 3 is an enlarged cross-sectional view of the rear wheel drive drive with the wheel cap removed in the direction of arrows III-III in Figure 1.
- Fig. 4 is a cross-sectional view showing the cylindrical spindle, the wheel mounting cylinder, the planetary gear reduction mechanism, etc. in Fig. 3 further enlarged.
- Fig. 5 shows the cylindrical spindle, the wheel mounting cylinder, the suction pipe, etc.
- Fig. 6 is an enlarged cross-sectional view of Fig. 4 as viewed from the direction of arrows V and V.
- Fig. 6 is a circuit configuration diagram showing a lubricating oil supply device provided on the left and right rear wheel sides.
- Fig. 7 is a control block diagram showing the body con- tainer ports and the like for controlling the supply of lubricating oil.
- FIG. 8 is a flow chart showing lubricant supply control processing and the like according to the first embodiment.
- FIG. 9 is a flow chart showing lubricant supply control processing and the like according to the second embodiment.
- FIG. 10 is a flow chart showing lubricant oil supply control processing and the like according to the third embodiment.
- FIG. 11 is a flowchart showing the supply control process and the like of the lubricating oil according to the fourth embodiment.
- Fig. 12 is a flow chart showing Fig. 1 1 ⁇ Lubricant supply control process etc.
- FIG. 13 is a characteristic diagram showing the relationship between the temperature of the lubricating oil and the rotational speed of the electric motor according to the fourth embodiment.
- FIG. 14 is a characteristic diagram showing the relationship between the temperature of the lubricating oil and the rotational speed of the electric motor according to a modification of the fourth embodiment.
- FIG. 15 is a flow chart showing the lubricating oil supply control process and the like according to the fifth embodiment.
- Fig. 16 is a flow chart showing the process of controlling supply of lubricating oil, etc., following Fig. 15.
- FIG. 17 is a flow chart showing lubricant oil supply control processing and the like according to the sixth embodiment.
- FIG. 18 is a characteristic diagram showing the relationship between the temperature of the lubricating oil and the traveling speed according to the sixth embodiment.
- FIG. 19 is a flowchart showing lubricant oil supply control processing and the like according to the seventh embodiment. Explanation of sign
- FIGS. 1 to 8 show a first embodiment of a travel drive device for a work vehicle according to the present invention.
- 1 is the dump truck rack adopted in the first embodiment, and this dump truck rack 1 has a robust frame structure as shown in FIG. And a vehicle body 2 running by a rear wheel 7 and a vessel 3 as a loading platform mounted on the vehicle body 2 so as to be able to be undulated.
- Vessel 3 is formed as a large container with a total length of 10 13 m (meal) in order to load a large amount of heavy load such as a stone object, and the rear bottom part is the rear of Vehicle 2 Unevenness (tilting) possible via pin connection ⁇ part 4 etc. It is linked to Noh. Also, at the upper front of the vessel 3, there is provided a ridge 3A covering the cabin 5 described later from the upper side.
- Reference numeral 5 is a cab located at the lower part of the buttocks 3 A and provided at the front of the vehicle body 2, and the cam pin 5 forms a cab where the driver of the dump truck 1 gets on and off. Inside the driver's seat start switch, accelerator pedal, brake pedal, steering wheel and multiple operation levers (all not shown), etc. are provided.
- buttocks 3 A of the V cell 3 cover the vehicle 5 from the flying stones such as rocks, for example, the vehicle (dump truck 1) ) Has a function to protect the driver in the cabin 5 even when the vehicle falls over
- the front wheel 6 are left and right front wheels rotatably provided at the lower front portion of the vehicle body 2.
- the respective front wheels 6 constitute steered wheels steered (steering operation) by the driver of the dump truck 1.
- the front wheel 6 is formed, for example, with a large tire diameter (outer diameter) ranging from 2 to 4 m, similarly to the rear wheel 7 described later.
- the left and right rear wheels 7 and 7 are rotatably provided on the lower side of the rear of the vehicle body 2, and the respective rear wheels 7 are drive wheels of the dump truck 1.
- Each rear wheel 7 is configured to include a tire 7A and a rubber 7B disposed on the inner side of the tire 7A.
- Reference numeral 8 denotes an engine as a prime mover provided in the vehicle body 2 under the cab 5, and the engine 8 is, for example, It consists of a large di-Xel, etc. Then, as shown in Fig. 2, the engine 8 drives the main generator 9 to generate three-phase AC power (for example, about 150 kW), which will be described later. It also drives the DC auxiliary generator 58 and so on. In addition, the engine 8 rotationally drives a hydraulic pump (not shown) which becomes a hydraulic pressure source, etc., and a relief cylinder 61, which will be described later, and a steering cylinder for power steering.
- a hydraulic pump not shown
- a power control unit 10 performs power control of the dump truck 1 together with a vehicle controller 5 6 described later.
- the power control unit 10 is a side of the cab 5 as shown in FIG.
- the power control unit 10 is output from a vehicle controller 5 6 described later, as shown in FIG. Power generated by the main generator 9 in accordance with the control signal
- traveling drive apparatus 1 1 according to the first embodiment provided on the rear wheel 7 side of the dump truck 1 will be described later.
- traveling drive 1 1 decelerates the rotation of the traveling motor 17 by the two-stage planetary gear reduction mechanism 2 3, 3 1 and sets the rear wheel 7 to be the driving wheel of the vehicle to the wheel mounting cylinder 1 9 Drive along with a large rotational torque.
- 1 2 is a rear wheel 7 provided on the lower rear side of the vehicle body 2 Or
- the tongue 1 2 is formed as a cylindrical body extending in the axial direction (left, right direction) between the left and right rear wheels 7 7 as shown in FIG.
- An intermediate suspension cylinder 13 attached to the lower rear side of the vehicle body 2 via a shock absorber (not shown) such as a shear plate, and provided on both left and right sides of the suspension cylinder 13 It is assumed that it will be made up of the mower 4 and the cylindrical spindle 1 5 which will be described later.
- Reference numerals 1 4 and 1 4 denote mower storage cylinders respectively provided on both ends of the suspension cylinder 1 3.
- the mower storage cylinders 1 4 are formed as cylindrical cylinders as shown in FIG. 3.
- the axially inner end (proximal end) is attached to the suspension cylinder 1 3 shown in Fig. 2 with a pole or the like.
- a cylindrical spindle or rod 15 described later is detachably fixed via a port 16 or the like to the tip end side (outer end in the axial direction) of the motor housing cylinder 14 as shown in FIG. It is done.
- a driving motor 17 described later which is a driving source of the rear wheel 7, is housed.
- Reference numeral 15 denotes a cylindrical spindle which constitutes the distal end side opening portion of the axial housing 12; the cylindrical spindle 15 is formed as a cylinder having a tapered shape as shown in FIG. 3 and FIG.
- the one side (proximal side) in the axial direction is the large diameter portion 15 A, which is attached to the mower holding cylinder 1 4 with a port 16 or the like.
- the tip side (the outer side in the axial direction) of the cylindrical spindle 15 is the small diameter cylindrical portion 15 B, and the inner circumference of the open end side of the small diameter cylindrical portion 15 B will be described later.
- the final carrier 3 6 is fixed and attached
- the cylindrical spindle 1 5 has the wheel mounting cylinder 1 9 on the rear wheel 7 side attached to the outer peripheral surface of the small diameter cylindrical portion 15 B via bearings 2 0 and 2 1 described later. Turn the wheel mounting cylinder 1 9 It is a rollable support. That is, the cylindrical spindle 1 5 is formed as a stepped stepped cylindrical body having a robust structure, and the wheel mounting cylinder 1 9 (rear wheel 7) is formed on the outer peripheral side of the small diameter cylindrical portion 15 B. ) With high rigidity (strength).
- a plurality of mounting seats 15 C projecting inward in the radial direction are formed on the body.
- the drive motor 1 7 described later is fixed to the mounting seat 15 C by a port or the like.
- FIGS. 3 and 4 on the inner peripheral side of the cylindrical spindle 15, it is positioned between the large diameter portion 15 A and the small diameter cylindrical portion 15 B radially inward.
- a projecting annular attachment portion 15 D is provided, and a partition wall 37 or the like described later is attached to the attachment portion 15 D.
- a radial direction hole 1 5 for letting out the suction piping 4 2 described later radially outward (that is, downward). E is drilled.
- the driving motor 17 and 17 are left and right driving motors as drive sources provided detachably on the cylindrical spindle 1 5 of the axle housing 1 2.
- the driving motor 17 is constituted by a large electric motor that is rotationally driven by the power supply from the power control device 10. And, as shown in Fig. 2, the driving motor 17 rotates the left and right rear wheels 7 and 7 independently of each other, so that the left and right motors located on both sides of the axle housing 12 are driven. They are provided inside the storage cylinders 1 4 and 1 4 respectively.
- the traveling motor 17 has a plurality of mounting flanges 17A on the outer peripheral side, and these mounting flanges 1 7A are cylindrical spindles 1 5 It is detachably attached to the mounting seat 15 C of the housing using a port or the like.
- the traveling motor 17 has a rotating shaft 18 as an output shaft, and the rotating shaft 18 is rotationally driven in the forward or reverse direction by the traveling motor 17.
- the rotary shaft 18 is formed as a long shaft extending in the axial direction in the small diameter cylindrical portion 15 B of the cylindrical spindle 15, the tip side of which is a cover plate 2 9 described later. It projects in the axial direction until it opposes.
- a male spline is formed on the projecting end side of the rotating shaft 18 and the later-described sun gear 24 is splined so as to rotate in a body.
- the traveling motor 17 has a rotary plate 18 A which is positioned inside the movable storage cylinder 14 and rotates integrally with the rotary shaft 18. 8 A is a speed sensor described later
- a cylindrical wheel mounting cylinder 19 rotates integrally with the rear wheel 7.
- the wheel mounting cylinder 19 constitutes a so-called wheel bracket, and the outer periphery of the wheel mounting cylinder 19 is a U wheel 7 B of the rear wheel 7 B Is detachably attached using means such as press fitting.
- the wheel mounting cylinder 1 9 is a cylindrical spindle 1 5 (small diameter cylindrical portion
- Lubricant oil G is stored in the wheel mounting cylinder 1 9 at a liquid level lower than that of the small diameter cylindrical portion 15 B of the cylindrical spindle 1 5.
- a ring-shaped internal gear 3 3 and an outer drum 2 2, which will be described later, are attached to the axially outer portion of the wheel mounting cylinder 1 9.
- the internal gear wheel 3 which is integrally fixed using (not shown) or the like, rotates integrally with the wheel mounting cylinder 1 9.
- the wheel mounting cylinder 1 9 is rotated by the planetary gear reduction mechanism 2 3 or 3 1, which will be described later, to a large torque by the rotation of the driving motor 1 7.
- Shaped internal gear 3 3 The wheel mounting cylinder 1 9 is rotated by a dog's torque along with the rear wheel 7 which is the driving wheel of the vehicle.
- the outer drum 2 2 is an outer drum which constitutes a part of the wheel mounting cylinder 1 9 together with the internal gear 3 3, and as shown in FIG. 4, the outer drum 2 2 is located axially outside of the wheel mounting cylinder 1 9 It is mounted with the ring-shaped internal gear 3 3 in between, and is releasably secured to the wheel mounting cylinder 1 9 using a plurality of long poros (not shown) or the like.
- Reference numeral 2 3 denotes a first-stage planetary gear reduction mechanism that constitutes the reduction gear mechanism adopted in the first embodiment.
- the planetary gear reduction mechanism 2 3 is disposed in the outer drum 2 2.
- the first stage planetary gear reduction mechanism 2 3 has a sun gear 2 4 spline-connected to the tip end side of the rotary shaft 1 8, the sun gear 2 4 and the ring 2 4 Shaped internal gear
- three planetary gears 2 6 that rotates in accordance with the rotation of the sun gear 2 4, and the respective star gears 2 6 are rotated via the support pins 2 7. It is composed of the support 2 8 that can be supported.
- the outer periphery of the first stage carrier 2 8 is detachably fixed to the open end (the end face in the axial direction outer side) of the outer drum 2 2 via a port or the like, and the outer drum 2 2 (wheel mounting A disk-like cover plate 2 9 is detachably mounted, for example, on the inner peripheral side of the carrier 2 8.
- the plate 2 9 is, for example, a sun gear 2. It is removed from the carrier 2 8 when checking the joint between 4 and the planetary gear 2 6.
- the ring-shaped internal gear 2 5 includes the sun gear 2 4, the planetary gear 2 6, the support pin 2 7, and the carrier 2 8 in the radial direction. It is formed as a cylindrical gear that encloses from the outside / LA length and is disposed on the inner peripheral side of the outer drum 2 2 with a small radial gap and the ring-shaped internal gear 2 5 is on its inner peripheral side
- the internal gear 25 continues to be fitted to each planetary gear 2 6, and the internal gear 2 5 is attached to the second stage sun gear 3 2 with respect to the cutting 3 0 described later.
- One-stage huge planetary gear 7 wind speed mechanism 2 3 is a traveling gear 1 7 rotation shaft 1 8 by the sun gear 2 4 is rotated into the body, the sun gear 2 4 turns multiple planets gear
- each freewheel gear 2 6 is transmitted as a decelerated rotation to the ring-shaped internal gear 2 5, and the internal gear 2 5
- the rotation of the gear is a 2 step huge planetary gear reduction mechanism 3 through a power U ring 3 0
- each planetary gear 2 6 is transmitted to the outer drum 2 and the ram 2 2 as the rotation of the carrier 2 8 but the outer drum 2 2 is used for the second stage internal gear 33 and the body described later. Because it rotates, the revolution of each planetary gear 2 6 can be suppressed to the rotation synchronized with the inner car 3 3 (wheel mounting cylinder 1 9).
- the force coupling 30 transmits the rotation of the internal gear 25 of one stage to the second stage sun gear 32 and the sun gear 32 of the second stage. It rotates at the same speed integrally with the ring-shaped internal gear 2 5.
- a plurality of oil holes (not shown) through which the lubricating oil G described later is circulated before and after the coupling 30 are formed in the coupling 30.
- the 3 1 is a two-step 100 planetary gear reduction mechanism that constitutes the reduction gear mechanism adopted in the first embodiment.
- the planetary gear reduction mechanism 3 1 is disposed between the rotating shaft 1 8 of the traveling motor 1 7 and the wheel mounting cylinder 1 9 via the first stage planetary gear reduction mechanism 2 3. Together with the planetary gear reduction mechanism 2 3, the rotation of the rotary shaft 1 8 is decelerated and transmitted to the wheel mounting cylinder 1 9 to generate a large rotational torque on the wheel mounting cylinder 1 9.
- the second stage planetary gear reduction mechanism 3 1 has a rotary shaft
- the sun gear 3 2 is engaged with a cylindrical thick gear 32 disposed coaxially with 1 8 and rotating integrally with the clutch 30, and the sun gear 3 2 and the ring-shaped internal gear 3 3.
- a cylindrical thick gear 32 disposed coaxially with 1 8 and rotating integrally with the clutch 30, and the sun gear 3 2 and the ring-shaped internal gear 3 3.
- three planetary gears 3 4 (only one is shown) that rotate in accordance with the rotation of the gear and a gear U 6 rotatably supporting each of the planetary gears 3 4 via a support pin 3 5 It is done.
- a cylindrical fitting portion 3 6 A to be fitted in the small diameter cylindrical portion 15 B of the cylindrical spindle 15 is integrally formed on the inner peripheral side of the 2 te bulk carrier 36. It is done. And, this cylindrical fitting portion 36 A is fixed non-rotatably and detachably on the inner periphery on the tip end side of the small diameter cylindrical portion 15 B using a spline coupling means.
- a rotary shaft 18 extends in the axial direction and is disposed in the cylindrical fitting portion 36 A of the rear 36, and a tip end of a supply pipe 45 described later is inserted with a gap.
- a wheel mounting cylinder is formed as a tubular body of a length that surrounds the car 3 4, the support pins 3 5 and the carrier 3 6 from the radially outer side.
- the two-stage planetary gear reduction mechanism 3 1 which is the final stage, is fixed to the cylindrical spindle 1 5 by the carrier 3 6.
- the rotation of Ria 36 is constrained. Because of this, the second stage planetary gear reduction mechanism 3 1 rotates the sun gear 3 2 into a plurality of planetary gears 3 when the sun gear 3 2 rotates with the force V spring 3 0 to the body.
- This rotation (rotation) is taken out from the ring-shaped internal gear 33 as a decelerated rotation while being converted into four rotations.
- the wheel mounting cylinder 19 on the rear wheel 7 side is the first-stage planetary gear A low-speed, high-output rotational torque is transmitted, which is decelerated in two steps by the gear reduction mechanism 2 3 and the second stage planetary gear reduction mechanism 3 1
- 3 7 indicates a partition wall provided in the cylindrical spindle 1 5 in the vicinity of the traveling motor 1 7.
- the partition wall 3 7 is formed as an annular partition plate, and the outer peripheral side of the partition wall 3 7 is fixed to a mounting portion 15 D of the cylindrical spindle 15 by a port or the like.
- the partition wall 3 7 is defined in the cylindrical spindle 15 by the motor chamber 38 on the axial side (inner side) and the cylindrical space 3 9 on the other axial side (outer side).
- the cylindrical space portion 3 9 is in continuous connection with the inside of the wheel mounting cylinder 1 9 through the inner peripheral side of the cylindrical fitting portion 3 6 A of the carrier 3 6 and the thick gear 32. I'm passing.
- This sealing device 4 0 is a seal device provided in the vicinity of the bearing 2 0.
- This sealing device 4 0 has a cylindrical spindle 1 5 and wheel mounting Since the space between the cylinder 1 and 9 is sealed in a liquid tight manner,
- the sealing device 40 prevents the lubricating oil G accumulated between the cylindrical spindle 15 and the wheel mounting cylinder 19 from leaking to the outside, as well as sediment, rain water, etc. It is intended to prevent intrusion into the interior.
- the configuration of the lubricating oil supply means 41 (hereinafter referred to as the lubricating oil supply device 41), which is the main part of the first embodiment, will be described.
- the lubricating oil supply system 4 1 of this machine circulates the lubricating oil G inside and outside the wheel mounting cylinder 1 9 and has a function to cool the lubricating oil G with oil conditioner 4 9 described later when. doing.
- the lubricating oil supply device 4 1 is provided with a suction pipe 4 2,
- the lubricating oil supply device 4 1 has left and right circulation paths 4 1 A, 4 I B.
- the left and right circulation paths 41 A and 4 IB are each configured by suction pipes 4 2 and 4 3 and supply pipes 4 4 and 4 5 which will be described later.
- these circulation paths 4 1 A, 4 IB are provided independently to the left and right wheel mounting cylinders 1 9, 1 9 respectively, and are stored in the left and right wheel mounting cylinders 1 9.
- the lubricating oil G is circulated independently along the left and right circulation paths 41 A and 41 B by a lubricating pump 46 described later.
- the lubricating oil supply device 4 1 has left and right circulation paths 4 1 A and 4 IB for the left and right wheel mounting cylinders 19 and 19, respectively. Each is provided independently. As a result, the control of the supply of lubricating oil G to the left and right wheel mounting cylinders 1 9, 1 9, etc. is performed separately for each of the left and right circulation paths 4 1 A and 4 1 B.
- suction pipe 4 2 is a suction pipe that constitutes the suction side of the circulation path 4 1 A, 4 1 B, and this suction pipe 4 2 has a diameter of the cylindrical spindle 5 5 at the tip end side as shown in FIG. 4 and FIG.
- the small diameter cylindrical portion 15 B of the cylindrical spindle 15 extends downward to the outside (lower side) in the radial direction through the inside of the directional hole 15 E.
- the lower end (tip) of the suction pipe 4 2 becomes the suction port 4 2 A opened in the lubricating oil G stored at the lower position in the wheel mounting cylinder 1 9, and the suction port 4 2 A sucks the lubricating oil G into the suction pipe 4 2 by driving the lubricating pump 4 6 described later.
- Reference numeral 4 3 denotes another suction pipe disposed on the side of the cylinder chamber 15 of the motor chamber 3 8. As shown in FIG. 4, the suction pipe 4 3 is located at the position of the partition wall 3 7 as shown in FIG. It is connected to the base end of 4 2 and extends inside the motor cylinder 1 4 toward the lubrication pump 46 described later. And these suction pipings 4 2 and 4 3 are connected to the suction side of the lubricating pump 4 6.
- Reference numerals 4 4 and 4 5 denote supply pipes which constitute the discharge side of the circulation paths 4 1 A and 4 1 B, and the supply pipes 4 4 and 4 5 are connected to the discharge side of the lubricating pump 4 6.
- Lubricant oil G is supplied to the planetary gear speed reduction mechanisms 2 3 and 3 1 in 1 9.
- the supply piping 4 4 is disposed on the side of the movable chamber 3 8 of the cylindrical spindle 1 5, and the proximal end side of the supply piping 4 5 is at the position of the partition 3 7. It is connected to the tip side.
- the tip end side of the supply pipe 45 extends axially in the cylindrical space portion 3 9 of the cylindrical spindle 15, and extends from the rotary shaft 18. It is disposed at the upper position
- reference numerals 4 6 and 4 6 denote lubricating pumps which are rotationally driven by a lubricating pump motor 4 7 as an electric motor.
- the respective lubricating pumps 4 6 have left and right circulations as shown in FIG. It is installed every 4 A, 4 1 B. And each lubricating oil pump 4 6 is rotated by being driven by the lubricating pump motor 4 7, and the lubricating oil sucked from the suction piping 4 2, 4 3 side
- 4 9 4 9 indicates an oil cooler as a heat exchanger provided in the middle of the supply pipe 4 4, and the oil coolers 4 9 are also disposed for each of the left and right circulation paths 4 1 A and 4 1 B It is done.
- the oil cooler 4 9 cools the lubricating oil G flowing in the p-rings 4 1 A and 4 1 B, and sends out, for example, the lubricating oil G having a temperature close to normal temperature to the supply pipe 45 side. .
- Reference numerals 5 0 and 5 0 denote pressure holding valves provided in the middle of the supply piping 4 4, and the pressure holding valves 5 0 are disposed, for example, on the discharge side of the lubricating pump 4 6 as shown in FIG. And, the pressure holding valve 50 is opened at cracking pressure of, eg, about 0.15 MP a, and the lubricating oil G discharged from the lubricating pump 4 is circulated into the supply pipe 4 4 Let As a result, the pressure holding valve 50 holds the discharge pressure of the lubricating pump 4 6 at a minimum pressure (for example, about 0 ⁇ 15 MP a) or more, and the pressure detection by the pressure sensor 5 2 described later is stabilized. It is something that
- each bypass valve 5 1 is a suction pipe 4 3 and a supply pipe 4 4 as shown in FIG. It is placed between And the bypass valve 5 1 is the supply piping 4 When an excess pressure or the like occurs in 4, it is released to the suction pipe 4 3 side.
- 5 2 and 5 2 are pressure sensors that detect the discharge pressure P of the lubrication pump 4 6.
- Each pressure sensor 5 2 is a lubricant pump 4 6 and a pressure holding valve 50 as shown in FIG. Located in the middle of each supply pipe 4 4. Then, the pressure sensor 5 2 outputs a signal for determining whether or not the lubrication pump 4 6 is operating normally to a vehicle body controller roller 5 6 described later.
- Reference numerals 5 3 and 5 3 denote temperature sensors provided in the left and right circulation paths 4 1 A 4 1 B, respectively, for detecting the temperature of the lubricating oil G.
- Each temperature sensor 5 3 is attached to the mounting portion 15 D of the cylindrical spindle 15 as shown in FIG. 4 and, for example, the temperature in the cylindrical space 3 9 (wheel mounting cylinder 1 9) Is detected as the temperature of lubricating oil G, and each temperature sensor 5 3 is as shown in FIG. 6: as shown in FIG. 6: il, with respect to the right wheel mounting cylinder 1 9 It is provided separately, and detects the temperature of the lubricating oil G in each wheel mounting cylinder 1 9 individually.
- each wheel mounting cylinder 1 9 is provided with an applicator 54 located at the upper side, and the spacer 54 is provided with the air pressure in the wheel mounting cylinder 1 9 ( air pressure
- 0 5 is a speed sensor that detects the output rotation of the traveling motor 17.
- the speed sensor 5 5 is provided close to the rotating plate 18 A of the rotating shaft 18 as shown in FIG.
- the rotation of the rotating plate 18 A is detected as the rotational speed of the rear wheel 7 (the traveling speed of the vehicle). That is, for the rear wheel 7 (wheel attachment cylinder 1 9), the planetary gear speed reduction mechanism 2 3 3 1 has multiple stages with respect to the rotational speed of the running motor 1 7 (rotation shaft 1 8). Since the rotation of a predetermined speed reduction ratio (for example, a speed reduction ratio of about 3 0 40) is transmitted, the rotation speed of the rear wheel 7 can be detected by detecting the rotation speed of the rotation plate 18 A The traveling speed of the vehicle is required
- the body side roller 56 is connected to the pressure sensor 52 temperature sensor 5 3 speed sensor 5 5 etc. and the output side is connected to the display 5 7 etc. It is connected to the motor drive motor 1717 and the lubrication pump motor 47 etc via the power control unit 10. This mouth, the display 5 7, is placed in the cabin 5 of the dump rack 1 shown in FIG.
- the body part D-La 56 has a storage part 56 A consisting of R 0 M R A M (including the nonvolatile note U) and the like.
- R 0 M R A M including the nonvolatile note U
- V 1 2 5 3 5 km / h
- the sub-generator 5 8 is a sub-generator mounted on the vehicle body 2 separately from the main generator 9, and as shown in FIG. 2, the sub-generator 5 8 is driven by a belt drive machine 5 9 by an engine 8. Driven, for example The electric power generated by DC 24 V (pol) is generated, and the electric power generated by the auxiliary generator 5 8 is charged to the patte U 6 0, and the battery 6 0 is used to It constitutes the power supply of 5 6 etc.
- the relief cylinder 6 1 is disposed between the front wheel 6 and the rear wheel 7 on both the left and right sides of the vehicle body 2 as shown in FIG. 1 and the relief cylinder 6 1 is supplied with pressure oil from the outside. As a result, it expands and contracts in the upper and lower directions, and raises / lowers (tilts) the vessel 3 centering on the pin joint o on the rear side.
- the hydraulic fluid stored in the hydraulic fluid reservoir 6 2 is pressurized oil by the hydraulic fluid pump and supplied to and discharged from the relief cylinder 6 1 and the steering cylinder for power steering.
- the dump rack 1 according to the first embodiment has the configuration as described above, and its operation will be described next.
- the power control device When drive current is supplied from 10 to each traveling motor 17 on the rear wheel 7 side, the vehicle controller 5 6 is controlled by the power control unit 10 to the left and right.
- the left and right rear wheels 7, 7 as the drive wheels of the vehicle are rotationally driven independently of each other by feed pack control of the rotational speeds of the traveling motors 17 and 17 separately. Drive straight at the same speed as each other
- the traveling drive device 1 1 provided on the rear wheel 7 side of the dump truck rack 1 rotates a plurality of traveling planetary gears 1 7 (rotation shaft 18), and the planetary gear reduction mechanism 2 3, 3 1
- the vehicle is decelerated at a speed reduction ratio of about 30 to 40, and the rear wheel 7 serving as the drive wheel of the vehicle is driven to travel with a large rotational torque that coincides with the wheel mount J 19. It is a thing.
- the left and right rear wheels 7 are driven at independent rotational speeds by in and 3 ⁇ 4 traveling motors 1 7
- the first and second planetary gear reduction mechanisms 2 3 and 3 1 are driven by the rotating shaft 18 of the traveling motor 1 1 7 as the lubricating oil G contained in the wheel mounting cylinder 1 9 is driven.
- the first stage the first stage,
- the second stage internal gears 2 5, 3 3, etc. sequentially raise the upper side, and perform rolling-up lubrication etc. on the planetary gear reduction mechanism 2 3, 3 1. Then, when the lubrication pump 4 6 is driven by the lubrication pump motor 4 7 shown in FIG. 4, the lubricating oil G in the wheel mounting cylinder 1 9 is supplied from the suction port 4 2 A of the suction pipe 4 2 to the lubrication pump 4 Suctioned by 6 and discharged toward the supply piping 4 4, 4 5 side.
- the lubricating oil G thus supplied to the first and second idle gear reduction mechanisms 2 3 and 3 1 in the wheel mounting cylinder 1 9 lubricates the respective tooth surfaces and the like. Gravity gradually drops downward due to the action of gravity, and is stored again in the lower position of the wheel mounting cylinder 1 9. Then, the lubricating oil G stored in the lower position of the wheel mounting cylinder 1 9 is sucked into the lubricating pump 4 6 from the suction port 4 2 A of the suction pipe 4 2 and discharged to the supply pipe 4 4, 4 5 side. It will be done.
- the wheel mounting cylinder 1 9 is a vehicle (dumper rack
- the lubricating oil G in the wheel mounting cylinder 1 9 behaves to adhere to the inner wall surface of the wheel mounting cylinder 1 9 over the entire circumference, as shown by the two-dot chain line in FIG.
- the suction port 4 2 A of the suction pipe 4 2 disposed in the wheel mounting cylinder 1 9 is separated from the liquid surface of the lubricating oil G at the port 3 ⁇ 4 at which the traveling speed of the vehicle is fast.
- the suction action of the lubricating oil G due to 6 6 is interrupted.
- the lubricating pump 4 6 slips in this way, the dry bearing operation of the lubricating pump 4 6 becomes early. It is apt to be worn away and damaged and cause a decrease in the life of the valve.
- the traveling speed of the vehicle is increased.
- the process of controlling the drive and stop of the lubrication pump 4 6 according to the traveling speed of the vehicle is performed by the vehicle controller 5 6
- step 2 the determination in step 2 is “NO J, the temperature T of the lubricating oil G is lower than the determination temperature T 1.
- suction P of the suction pipe 4 2 P 4 2 A is a reference value that determines whether the lubricating pump 4 6 is idle or not because the lubricating oil G is not suctioned.
- the traveling speed V is generally equal to or less than the judgment speed V 1 immediately after the start of traveling of the vehicle, so the process proceeds to the next step 5.
- the traveling speed V is generally equal to or less than the judgment speed V 1 immediately after the start of traveling of the vehicle, so the process proceeds to the next step 5.
- the traveling speed V is generally equal to or less than the judgment speed V 1 immediately after the start of traveling of the vehicle, so the process proceeds to the next step 5.
- the traveling speed V is generally equal to or less than the judgment speed V 1 immediately after the start of traveling of the vehicle, so the process proceeds to the next step 5.
- the traveling speed V is generally equal to or less than the judgment speed V 1 immediately after the start of traveling of the vehicle, so the process proceeds to the next step 5.
- the traveling speed V is generally equal to or less than the judgment speed V 1 immediately after the start of traveling of the vehicle, so the process proceeds to the next step 5.
- the traveling speed V is generally equal to or less than the judgment speed V 1 immediately after the start of traveling of the vehicle, so the process proceeds to the
- step 4 If it exceeds V 1, the line speed V is already faster, and it is judged in step 4 as “ ⁇ ⁇ ⁇ ”, so the process returns to step 1 and subsequent steps
- step 4 when the judgment is YESJ, the traveling speed V is lower than the judgment speed V 1 • Move to step 5 and start the lubrication pump motor 4 7 and start the lubrication pump 4 6 Drives rotation to perform forced circulation of lubricating oil G. That is, lubricating oil G stored in the lower position of wheel mounting cylinder 1 9 is drawn from suction port 4 2 A of suction piping 4 2 by lubricating pump 4 6 While discharging the supply piping 4 4 4 5 side and lubricating oil G cooled by the oil cooler 4 9 at this time, the planetary gear reduction mechanism 2 from the tip end side of the supply piping 4 5
- step 6 again, the temperature sensor 5 3 detects 3 ⁇ 4 m of the lubricating oil G in the wheel mounting cylinder 19 or T 3 ⁇ 4 s 3 ⁇ 4 ⁇ 4 and the temperature of the lubricating oil G is determined in step 7 below. It is determined whether it has risen to T 1 or more. And at step 7
- step 9 it is judged whether or not the traveling speed V is equal to or less than the judgment speed V 1. While the judgment in this step 9 is "YES", the traveling speed V is judged at the judgment speed V Since the ratio is 1 or less, rotation drive of the lubrication pump 4 6 by the lubrication pump motor 4 7 is continued, and in a state in which the lubricating oil G is forcibly circulated, the process returns to step 6 and the subsequent processing is continued. Do.
- step 7 when it is determined in step 7 that ⁇ NO, the temperature T of the lubricating oil G becomes lower than the determination temperature T 1, and the lubricating oil G in the wheel mounting cylinder 1 9 is forced to circulate and cool There is no need. Therefore, in this case, the process moves to step 10 to stop the lubrication pump motor 4 7 and to end the forced circulation of the lubricating oil G by the lubrication pump 4 6. After that, return to step 1 and perform the subsequent processing.
- step 7 when it is judged as "YES” in step 7 and when it is judged as "N O” in step 9, the temperature T of the lubricating oil G is higher than the judgment temperature T1, but the traveling speed V of the vehicle is judgment speed It is over V 1. And, at this time, the rear wheel 7 rotates at high speed together with the wheel mounting cylinder 1 9 and the wheel mounting cylinder Lubricant oil G in 1 9 is affected by the centrifugal force accompanying slow speed rotation
- the lubricant G in the wheel mounting cylinder 1 9 behaves in a manner that it adheres to the inner wall surface of the wheel mounting cylinder 1 9 over the entire circumference as shown by the dashed line in FIG. It can be judged that the level of oil G has dropped to a position lower than suction P 4 2 A of suction pipe 4 2
- step 10 move to step 10 to stop the lubrication pump motor 4 7 and stop driving the lubrication pump 4 6 at such a place ⁇ , so that the traveling speed V of the vehicle is high.
- Suction D 4 2 A of suction piping 4 2 arranged in cylinder 1 9 separates from the fluid surface of lubricating oil G and prevents lubricating pump 4 6 from being driven in a rolling state.
- problems such as early wear and damage to the seals, bearings, etc. of the lubrication pump 4 6 during operation. Therefore, according to the first embodiment, the traveling speed of the vehicle
- the lubrication pump motor 4 7 performs lubrication depending on whether the temperature T of the lubricating oil G detected by the temperature sensor 5 3 is lower than the judgment temperature ⁇ 1 (for example, 4 0 6 0 C). It controls to stop driving the pump 4 6. As a result, when it is not necessary to forcibly circulate and cool the lubricating oil G in the wheel mounting cylinder 1 9, it is possible to stop the consumption of electricity by stopping the lubrication pump motor 4 7. It is possible to improve energy efficiency
- FIG. 9 shows a second embodiment according to the present invention, and in the present embodiment, the form and the one port J1 constituent element of the first embodiment are denoted by the same reference numerals, and the description thereof will be made.
- the second embodiment is characterized in that the temperature of the lubricating oil G is omitted.
- the driving speed V of the vehicle and the discharge pressure P of the lubricating pump 4 6, the driving and stopping of the lubricating pump 4 6 by the lubricating pump motor 4 7 are controlled. That is, in the lubricant supply control process shown in FIG. 9, the process from step 2 1 to step 2 9 is described in the first embodiment. The same process as ⁇ 9 (see Figure 8). And in the next step 3 0, the lubrication pump 4
- the discharge pressure P of 6 is read from the pressure sensor 5 2 (see FIG. 4 and FIG. 7), and the process proceeds to step 31 to determine whether the discharge pressure P is equal to or higher than a predetermined reference pressure P 1.
- the reference pressure P 1 is a reference value that determines whether the lubrication pump 4 6 is idle or not, for example because the lubrication pump 4 6 does not perform suction operation due to a decrease in the lubricating oil G or the like.
- step 31 when it is judged “NO” in step 31, the discharge pressure P of the lubricating pump 4 6 is lower than the reference pressure P 1, and the lubricating oil G in the wheel mounting cylinder 1 9 is suctioned. It can be judged that suction is not performed at the mouth 4 2 A (see Fig. 4 and Fig. 5). So, in this case, go to step 3 2 Stop the motor for lubrication pump 4
- the traveling speed V of the vehicle is determined to be lower than or equal to the determination speed V 1 by the determination processing of step 2 9, the discharge pressure P of the lubrication pump 4 6 is lower than the reference pressure P 1.
- the driving of the lubrication pump 4 6 by the lubrication pump motor 4 7 can be immediately stopped to prevent the lubrication pump 4 6 from being driven in an idle manner.
- step 31 when it is judged “YES” in step 31, the discharge pressure P of the lubrication pump 4 6 is equal to or higher than the reference pressure P 1. Therefore, it is assumed that the lubrication pump 4 6 is normally driven instead of idling. It can be judged. In that case, return to step 2 6 and continue the subsequent processing.
- the lubricating oil G in the wheel mounting cylinder 1 9 has two points in FIG. 5 even when the traveling speed V is less than or equal to the determination speed V 1 due to the viscosity effect of the lubricating oil G (the viscosity change with temperature rise). As shown in the figure, it behaves in such a way that it adheres to the entire inner surface of the wheel mounting cylinder 1 9 and the liquid level of the lubricating oil G falls to a position lower than the suction port 4 2 A of the suction pipe. Ru.
- Two things can be taken at a fixed rate, which further improves the quality and safety of the device.
- FIG. 10 shows a third embodiment according to the present invention.
- the same reference numerals as in the first embodiment denote the same parts as in the first embodiment, and a description thereof will be omitted.
- the patrol temperature T 2 (T 2> T) of 9 0 1 0 0 0 C
- the indicator 5 7 shown in FIG. 7 is used to notify an operator in the cabin 5 to warn that the temperature T of the lubricating oil G is high.
- step 4 1 4 2 is performed in the same manner as the process of step 1 2 (see FIG. 8) described in the first embodiment.
- step 4 3 the temperature T of the lubricating oil G is
- step 4 4 the temperature T of the lubricating oil G has risen until the warning temperature T 2 is exceeded, when it is judged that “No” in step 4 3. Then, move on to the next step 4 4 and warn that the temperature T of lubricating oil G becomes high by means of clothing 5 7 in Fig. 7 to reduce the traveling speed of the vehicle to the operator of the vehicle And / or notify that lubricating oil supply device 4 1 needs to be occupied and maintenance etc. And after that, the process from step 45 onward is continued.
- step 50 After driving the lubricating pump 4 6 in step 4 7, it is determined in step 50 whether the temperature T of the lubricating oil G is below the warning temperature T 2 or not, and in step 50 0 In the meantime, the processing in step 5 2 5 6 is performed in the same manner as the processing in step 2 8 3 2 (see FIG. 9) described in the second embodiment.
- step 50 when it is judged “N ⁇ ” in step 50, the temperature T of the lubricating oil G rises until the warning temperature T 2 is exceeded. There is. Therefore, in this case, the process proceeds to the next step 51, and the display 5 7 in FIG. 7 warns that the temperature T of the lubricating oil G is high, and the vehicle operator is notified of the vehicle Informing that the running speed should be reduced or inspection of the lubricating oil supply device 4 1 is necessary. Then, after that, the processing of step 52 and the subsequent steps are continued.
- the third embodiment configured as described above, substantially the same effects as the first and second embodiments. You can get Furthermore, in the third embodiment, when the temperature T of the lubricating oil G rises to exceed the warning temperature T 2, this can be notified and alerted to the vehicle's availability in the vehicle to promote prompt response. be able to.
- FIGS. 11 to 13 show a fourth embodiment according to the present invention, and in the present embodiment, the same components as the first embodiment have one port J. The explanation shall be omitted.
- the feature of the fourth embodiment is that
- the rotational speed R of the lubricating pump 4 6, which is rotationally driven, is variably controlled according to the temperature T of the lubricating oil G.
- the third process is performed in the same manner as the process of step 1 2 (see FIG. 8) described in the first embodiment.
- step 64 it is judged whether the temperature T of the lubricating oil G is the temperature Ta (refer to FIG. 13 and it is judged YES in step 64). Move to the memo UM, Lubricant Honf 4 6 low speed rotation
- step 6 1 determines whether “NO J is determined. If it is determined in step 6 1 that “NO J is determined, the process proceeds to step 6 6 and the temperature T of the lubricating oil G is a temperature T b (T
- temperature T 2 indicates that the temperature of lubricating oil G is too high and warning temperature 1 or 4r is displayed.
- step 7 9 it is necessary to drive the lubrication pump 4 6.
- the contents of the updated memory M R 1, R 2, R 3 Change the rotational speed of the lubrication pump 4 6 to low speed R 1, medium speed R 2 or slow speed R 3 according to the above.
- step 80 to step 82 is performed in the same manner as step 8 to 10 (see FIG. 8) described in the first embodiment, and thereafter step 6 shown in FIG. Make the process after 1 repeat
- the rotation speed R of the lubrication pump 4 6 is set to the high speed R 3 in addition to supplying at an intermediate flow rate toward the 4 5 side, the lubricating oil G flows in the oil cooler 4 9.
- the temperature T of the lubricating oil G can be rapidly lowered at a high speed, and the lubricating oil G at a low temperature can be supplied at a large flow rate toward the supply pipe 45 side.
- the case of changing the rotational speed of the lubricating pump 4 6 in three stages of low M, medium speed or high speed has been described as an example.
- the present invention is not limited thereto.
- the temperature T of the lubricating oil G changes in the range of the temperature T 1 T b as in the modified example shown in FIG. It may be configured to change continuously along the characteristic line 7 2.
- the rotational speed of the lubricating pump 4 6 may be variably controlled in multiple stages of, for example, two stages or four or more stages.
- FIG. 15 and FIG. 16 show a fifth embodiment according to the present invention, and in this embodiment, the same components as those of the first embodiment are given the same reference numerals. I shall omit the explanation
- the lubricating oil G in the wheel mounting cylinder 1 9 1 9 (see Fig. 6) provided on both left and right sides of 1 2 is to be controlled separately.
- the lubricating oil supply device 4 1 has left and right circulation passages 4 1 A and 4 1 B as left and right wheel mounting cylinders 1 9 1 9
- the supply control of the lubricating oil G to the left and right wheel mounting cylinders 1 9 1 9 etc. is provided independently for each of the left and right circulation passages 4 1 A, 4 1
- step 91 shown in FIG. Condition include the operating time after engine start, etc. m. Also, in step 92, the temperature of lubricating oil G is calculated from the left and right wheel mounting cylinders 1 9 1 9 force shown in Fig. 6, and the temperature sensor 5 3 5 3 for left and right respectively. Detect and insert.
- step 9 3 it is determined whether or not there is a clear temperature difference between the temperature T of the lubricating oil G detected by the left and right temperature sensors 5 3 and 5 3. Then, if it is judged “YES” in step 9 3, for example, either one of the left and right temperature sensors 5 3 becomes abnormal (faulty) or the left and right wheel mounting cylinders 1 9 are housed If the level of the lubricating oil G is significantly different between the left and right, then in this case, the process proceeds to step 9 4 and the temperature sensor 5 3 is abnormal, the liquid level The alarm of the bell is warned by the display 5 7, and after that, it moves on to step 1 0 9 described later shown in FIG.
- step 9 5 determines whether the temperature T of the lubricating oil G detected by the left and right temperature sensors 5 3 and 5 3 is a temperature that is appropriate for the vehicle's running load. Then, when it is judged as "N” in step 95, the temperature T of the lubricating oil G is extremely high or low with respect to the running load. Therefore, in this case, the process proceeds to step 9 6 where the display 5 7 warns of an abnormality of the temperature sensor 5 3 or a liquid level abnormality of the lubricating oil G (insufficient lubricating oil or excessive lubricating oil). After that, the process proceeds to step 1 0 9 shown in FIG.
- step 95 when it is judged “Y E S” in step 95, it can be judged that the temperature T of the lubricating oil G is appropriate for the running load, and that no abnormality such as a sensor has occurred. Therefore, in this case, the process from the next step 9 7 to 100 is performed in the same manner as the process from step 2 to 5 (see FIG. 8) described in the first embodiment.
- step 1 00 After driving the lubricating pump 4 6 in step 1 00, the processing in steps 1 0 1 to 1 0 4 shown in FIG. 1 6 is performed in the same manner as the processing in steps 9 2 to 9 7. That is, when it is determined in step 102 that “Y E S”, the process returns to step 94 shown in FIG. 15 to perform alarm processing of the temperature sensor 53 or the like. If it is determined in step 103 that the result is "N”, the process returns to step 96 shown in FIG. 15 to perform alarm processing of the temperature sensor 53 or the like.
- step 104 when it is determined that the temperature of the lubricating oil G is low when it is determined in step 104 that the temperature of the lubricating oil G is low, the operation of the lubricating pump 4 6 is stopped by shifting to step 1 13 described later.
- step 104 the process proceeds to the next step 105, and the left illustrated in FIG. Read the discharge pressure ⁇ of each lubrication pump 4 6 from the pressure sensors 5 2 and 5 2 on both right sides respectively. And in step 1 06, it is judged whether there is a large difference between the discharge pressure ⁇ on the left and both sides. Do. If “YES is determined in this step 106, the difference between the left and right discharge pressure ⁇ ⁇ becomes large ⁇ , so the process proceeds to step 1 07. For example, an abnormality occurs in the pressure sensor 52 etc. If it does not, the alarm will be issued according to the table (5 7), and the operation of pump 4 6 will be stopped at step 1 08 described later.
- step 106 determines whether the level of the lubricating oil G is low in either one of the left and right wheel mounting cylinders 19 and 19 shown in FIG. There may be a case where lubricating oil shortage has occurred. Alternatively, it is conceivable that one of the left and right lubrication pumps 4 6 has failed n.
- next step 107 check that “i, right lubrication pump 4 6 or pressure sensor 5 2 is not broken, or if there is a shortage of lubricating oil, etc.
- step 108 the driving of the lubrication pump 4 6 by the lubrication pump motor 4 7 is stopped, and after that, the step 5 08 Move to 1 0 9 and perform vehicle abnormal processing as described later.
- the traveling speed of the dump truck rack 1 (vehicle) is limited, and the engine horsepower limitation processing is performed to reduce the load of the engine 8 as much as possible. It performs control processing. Therefore, for example, even at the site of a mine etc., it is possible to continue the travel control of dump truck 1 with the least possible load. Ru.
- step 1 06 when it is judged “N ⁇ ”at step 1 06, there is almost no difference in the discharge pressure P of the left and right lubrication pumps 4 6 illustrated in FIG. 6 and the pressure sensor 5 2 etc. operate normally It can be determined that So, in this case, move to the next step 1 1 0: transfer pressure P to reference pressure P 1
- step 110 the discharge pressure P of the lubricating pump 4 6 becomes equal to or higher than the reference pressure P 1, and the lubricating oil G in the wheel mounting cylinder 1 9 is suction piping 4 2
- the suction port 4 2 A judges that suction is normal, so return to step 101 and continue the processing from this point on.
- step 1 1 If it is judged “NO” in step 1 1 0, the discharge pressure P of the lubrication pump 4 6 is lower than the reference pressure P 1
- the lubricant G in the wheel mounting cylinder 1 9 is suctioned 4 2
- step 1 1 1 move on to step 1 1 1 and include the traveling speed V of the vehicle, and then step 1 1
- step 1 1 1 2 the liquid level of the lubricating oil G acts as the action of the heart power as in the processing of step 9 1 0 (see FIG. 8) according to the first embodiment. It can be judged that the position is lower than the suction port 4 2 A of the suction pipe 4 2. Therefore, in the case of, move to the next step 1 1 3 o to stop the lubrication pump motor 4 7 and stop the driving of the lubrication pump 4 6 and Thereafter, the process returns to step 9 1 shown in FIG. 15 to repeat the subsequent processing.
- step 1 1 1 2 when it is judged “YES” in step 1 1 2, the discharge pressure P of the lubricating pump 4 is equal to the reference pressure P 1 regardless of whether the traveling speed V of the vehicle is less than the judgment speed V 1. It is much lower. Therefore, in this case, it can be determined that, for example, the occurrence of the lubricant shortage, the failure of the pressure sensor 52 or the lubricant pump 46 has occurred. Then, in this case, move on to step 107 and check if there is a shortage of lubricating oil in the wheel mounting cylinder 19 or if there is a failure of the lubricating pump 46 or the pressure sensor 52, etc. Alarm the operator with a display 5 7 with a signal to be inspected. After that, stop the drive of the lubrication pump 4 6 at step 1 0 8 and move to step 1 0 9 for vehicle abnormality. Do processing when.
- the temperature T of the lubricating oil G is apparent within the wheel mounting cylinders 1 9 and 1 9 (see FIG. 6) which are provided on the left and right sides of the axle 8 wheeling 1 2 immediately after the start of operation of the vehicle. If there is a difference (refer to step 9 3 9 4), the left and right temperature sensors 5 3 5 3 may be damaged, or wiring abnormalities may occur.
- the notification can be sent to the Appellation in Key Five. Also, for example, even if a time of about 10 minutes to 30 minutes has elapsed after the operation of the traveling motor 17, etc., no change is observed in the detected value (temperature T) of the temperature sensor 53, It can be reported as an abnormality (fault) in temperature sensor 5 3.
- the traveling drive 1 1 shown in Figs. 3 and 4 usually has a built-in hydraulic circuit (not shown) for braking. Therefore, when the brake system seal is damaged or damaged, the brake fluid is mixed with the lubricating oil G in the wheel mounting cylinder 1 9 and the fluid level rises abnormally. I will do it. But such a teacher
- the steps 9 3 and 9 4 shown in FIG. 15 and the step 10 2 shown in FIG. 16 correspond to the features of the invention according to claim 6.
- Is the temperature sensor 5 3 etc. Is a specific example of the sensor determination means.
- FIGS. 17 and 18 show a sixth embodiment according to the present invention.
- the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
- the feature of the sixth embodiment is the lubrication pump 4 6
- the drive and stop are controlled according to the characteristics of temperature and traveling speed shown in Fig. 18).
- step 1 2 1 makes the temperature T of lubricating oil G redundant from temperature sensor 53, and at step 1 2 2 the speed sensor 5 5 Read the driving speed V. Then, in the next step 1 2 3, the pressure and the traveling speed V are in the region B for driving the lubrication pump motor 4 7 defined by the characteristic line 8 1 in FIG. 1 8. (Hereafter, the motor drive area B for lubrication pump is simply referred to as "area B".
- the characteristic line 8 1 in Fig. 18 is obtained from the actual machine schedule such as the previous traveling test and so on.
- the temperature ⁇ detected by 3 is the judgment temperature T 1 (eg, T 1 4
- the viscosity (viscous drag) of the lubricating oil G gradually decreases as its temperature rises.
- the amount of the lubricant oil adhering to the inner wall surface of the wheel mounting cylinder 19 by viscosity increases as the temperature decreases, so even if the rotation speed is low, the lubricating oil G fluid Suction pipe 4 2 suction port 4
- the mental force acting on G is the running speed V of the vehicle (ie the rear wheels
- the lubricating oil G in the wheel mounting cylinder 19 is all around the inner wall surface of the wheel mounting cylinder 19 as exemplified by the two-dot chain line in FIG. It behaves as if it adheres to the surface, and the liquid level of the lubricating oil G falls to a position lower than the suction port 4 2 A of the suction pipe 4 2.
- the traveling speed V becomes smaller than
- Characteristic line 8 1 can be obtained as a diagonally inclined characteristic so that the range of B becomes gradually smaller. Note that the characteristic line 81 does not have to be a straight line ⁇ , but it is a characteristic line that forms a curved line. Also, the temperature T of the f lubricating oil G is equal to the threshold temperature T 2 If you want to go over it, you should not let the appetizer know that you should stop the vehicle itself.
- step 1 2 3 when “Y E S” is determined in step 1 2 3, the detected values of the temperature T and the traveling speed V are within the range B in FIG. 1 8. For this reason, it is necessary to cool the lubricating oil G, and if the lubricating pump 4-7 is activated and the lubricating pump 4 6 is driven, the lubricating oil G in the wheel mounting cylinder 1 9 is suctioned.
- step 1 2 3 when it is determined “YES” in step 1 2 3, the process shifts to step 1 2 4 to start the lubrication pump motor 4 7 and rotate the lubrication pump 4 6 to forcibly circulate the lubricating oil G. Then, in the next step 125, read the temperature T of the lubricating oil G again from the temperature sensor 53, and read the traveling speed V of the vehicle from the speed sensor 55 in step 126. .
- step 1 2 7 after driving the lubrication pump 4 6, it is judged whether or not the temperature T and the traveling speed V are in the region B in FIG. 1 8 and step 1
- step 1 2 7 when it is judged “NO” in step 1 2 7, the detected value of the running speed V is out of the range B in FIG. 1 8. Therefore, the temperature T of the lubricating oil G is in this port. Judgment temperature lower than T 1 or lubricating oil G in wheel mounting cylinder 1 9 is affected by centrifugal force as high speed rotation of lubricating oil G, fluid level of lubricating oil G is suction pipe 4 2 suction It can be judged that the position is lower than ⁇ 2 4 2 A
- step 1 2 8 move to step 1 2 8 and stop the lubrication pump 4 7 to interrupt the drive of the lubrication pump 4 6. After that, the process returns to step 1 2 1 and 9 is performed again.
- substantially the same function and effect as those of the first embodiment can be obtained, and the dry continuous rotation suppression lubrication by the slippage of the lubricating pump 4 6 can be obtained. It is possible to eliminate problems such as premature wear and damage of seals, etc. of the pump 4 6.
- FIG. 19 shows a seventh embodiment according to the present invention.
- the same components as those of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.
- the feature of this embodiment is that the lubricating oil temperature T, the running speed V of the car, and the discharge pressure of the lubricating pump 4 6 ⁇ ⁇ according to the lubricating pump 4 7 When configured to control drive and stop
- the lubricating pump 4 6 is controlled based on the traveling speed V in steps 8 and 9.
- steps 1 3 8 and 1 3 9 are performed as described later. Is configured to control the lubricating pump 4 6 based on the discharge pressure P by the processing of
- the process in the step 1 3 1 step 1 3 7 is described in the first embodiment:! Perform the same process as ⁇ 7 (see Fig. 8). Then, in the next step 1 3 8, the discharge pressure P of the lubricant pump 4 6 is a pressure sensor 5 2 (see FIG. 7).
- step 1 3 9 Make a redundancy, move to step 1 3 9 and determine whether the discharge pressure P is higher than a predetermined reference pressure P 1 or not.
- step 1 3 when it is judged “NOJ” in step 1 3 9, the discharge pressure P of the lubricating pump 4 6 is lower than the reference pressure P 1, and the lubricating oil G in the wheel mounting cylinder 1 9 is suction piping 4 2
- the suction port 4 2 A (refer to Fig. 4 and Fig. 5) can judge that it is not sucking. So, in the case of, step 1
- step 1 3 9 when it is determined in step 1 3 9 that “Y E S J, it can be determined that the forced circulation of the lubricating oil G by the lubricating pump 4 6 is being performed well, so step 1
- the present invention is not limited thereto, and may be configured to use, for example, a single reduction gear mechanism, or may be configured to use three or more reduction gear mechanisms.
- the case where the speed sensor 5 5 for detecting the rotational speed of the rear wheel 7 is provided on the traveling motor 1 7 and detected as the rotational speed of the rotational shaft 1 8 is taken as an example.
- the present invention is not limited to this, for example, the rear wheel
- the rotation of 7 may be detected directly, or the rotation of wheel mounting cylinder 1 9 may be detected. That is, the speed sensor used in the present invention is only required to be able to directly and indirectly detect the rotation of the wheel (rear wheel 7).
- the traveling motor 17 consisting of an electric motor as a drive source
- the present invention is not limited to this, and, for example, a hydraulic motor or the like may be used as a drive source of the traveling drive device.
- the present invention is not limited to this, for example, as a configuration that uses a sound synthesizing device, an alarm buzzer, a lamp, or the like to notify a sensor of a sensor abnormality or the like by using an alarm buzzer or a lamp. Is also good.
- the rear wheel drive type dump truck rack 1 is described as an example of the working vehicle, but the present invention is not limited to this.
- front wheel It may be applied to a drive type or a four wheel drive type dump truck that drives both front and rear wheels, and may be applied to work vehicles other than a dump truck having wheels for traveling. It is a thing.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/595,013 US8155834B2 (en) | 2007-07-30 | 2008-05-26 | Traveling drive unit for working vehicle |
EP08764955.4A EP2177387B1 (en) | 2007-07-30 | 2008-05-26 | Running driver of working vehicle |
AU2008283583A AU2008283583B2 (en) | 2007-07-30 | 2008-05-26 | Running driver of working vehicle |
JP2009525307A JP5027234B2 (ja) | 2007-07-30 | 2008-05-26 | 作業車両の走行駆動装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2007-197481 | 2007-07-30 | ||
JP2007197481 | 2007-07-30 |
Publications (1)
Publication Number | Publication Date |
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WO2009016884A1 true WO2009016884A1 (ja) | 2009-02-05 |
Family
ID=40304122
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Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2008/060099 WO2009016884A1 (ja) | 2007-07-30 | 2008-05-26 | 作業車両の走行駆動装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8155834B2 (ja) |
EP (1) | EP2177387B1 (ja) |
JP (1) | JP5027234B2 (ja) |
AU (1) | AU2008283583B2 (ja) |
WO (1) | WO2009016884A1 (ja) |
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Also Published As
Publication number | Publication date |
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EP2177387A4 (en) | 2011-11-02 |
US20100140020A1 (en) | 2010-06-10 |
EP2177387A1 (en) | 2010-04-21 |
JPWO2009016884A1 (ja) | 2010-10-14 |
EP2177387B1 (en) | 2017-08-16 |
JP5027234B2 (ja) | 2012-09-19 |
AU2008283583A1 (en) | 2009-02-05 |
US8155834B2 (en) | 2012-04-10 |
AU2008283583B2 (en) | 2011-03-03 |
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