WO2006030783A1 - 作業車両の入力クラッチの制御装置 - Google Patents
作業車両の入力クラッチの制御装置 Download PDFInfo
- Publication number
- WO2006030783A1 WO2006030783A1 PCT/JP2005/016839 JP2005016839W WO2006030783A1 WO 2006030783 A1 WO2006030783 A1 WO 2006030783A1 JP 2005016839 W JP2005016839 W JP 2005016839W WO 2006030783 A1 WO2006030783 A1 WO 2006030783A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- brake
- valve
- input clutch
- pressure
- clutch
- Prior art date
Links
Classifications
-
- 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
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18109—Braking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T10/00—Control or regulation for continuous braking making use of fluid or powdered medium, e.g. for use when descending a long slope
- B60T10/02—Control or regulation for continuous braking making use of fluid or powdered medium, e.g. for use when descending a long slope with hydrodynamic brake
-
- 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
- B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
-
- 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
- B60W10/18—Conjoint control of vehicle sub-units of different type or different function including control of braking systems
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D48/04—Control by fluid pressure providing power assistance
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D2048/0209—Control by fluid pressure characterised by fluid valves having control pistons, e.g. spools
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D2048/0224—Details of conduits, connectors or the adaptors therefor specially adapted for clutch control
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D2048/0257—Hydraulic circuit layouts, i.e. details of hydraulic circuit elements or the arrangement thereof
- F16D2048/0281—Complex circuits with more than two valves in series or special arrangements thereof not provided for in previous groups
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D2048/0257—Hydraulic circuit layouts, i.e. details of hydraulic circuit elements or the arrangement thereof
- F16D2048/0287—Hydraulic circuits combining clutch actuation and other hydraulic systems
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/10—System to be controlled
- F16D2500/11—Application
- F16D2500/1107—Vehicles
- F16D2500/1112—Heavy vehicle
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/70—Details about the implementation of the control system
- F16D2500/702—Look-up tables
- F16D2500/70205—Clutch actuator
- F16D2500/70217—Pressure
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/70—Details about the implementation of the control system
- F16D2500/702—Look-up tables
- F16D2500/70205—Clutch actuator
- F16D2500/70235—Displacement
Definitions
- the present invention relates to a work vehicle in which driving force of an engine is transmitted to driving wheels via a traveling power train and transmitted to a hydraulic pump for a work machine, and particularly in a power transmission path of the traveling power train.
- the present invention relates to a control device for an input clutch (modulation clutch) applied to a work vehicle in which an input clutch is provided between an engine and a transmission.
- the driving force of the wheel loader engine is distributed to two power transmission paths for traveling and working. That is, the driving force of the engine is supplied to the traveling power train and the working machine hydraulic pump via the PTO shaft, and is distributed to the traveling horsepower and the working horsepower.
- An input clutch (modulation clutch) is provided between the engine and the transmission in the power transmission path of the traveling power train.
- the input clutch adjusts the power transmitted to the traveling power train to increase the power transmitted to the work implement via the hydraulic pump for work implement according to the work situation, or to slip the vehicle. It is provided to prevent this.
- Patent Document 1 for the purpose of preventing engine stall at the time of braking with respect to a general automobile, when a brake pedal is depressed, brake hydraulic oil is supplied to a clutch operating cylinder via a pipe. The invention of disengaging the clutch is described.
- Patent Document 2 for the purpose of performing an inching operation with a brake pedal, the brake master cylinder is actuated via a piston rod when the brake pedal is depressed. An invention is described in which the inching control valve is actuated by pushing and pulling the cable in conjunction with the operation of the brake pedal.
- Patent Document 1 JP-A-1-186440
- Patent Document 2 JP-A-3-248929
- Patent Document 1 since the invention described in Patent Document 1 is configured to control the clutch pressure of the input clutch by the brake hydraulic oil, the relationship between the brake braking force and the clutch pressure is unambiguous depending on the design of the hydraulic piping and hydraulic equipment. And the relationship cannot be changed easily. In addition, the clutch pressure fluctuates due to the temperature of the brake fluid, etc., and stable characteristics cannot be obtained.
- Patent Document 1 is originally intended for general automobiles, and is intended for work vehicles such as wheel loaders in which engine driving force is distributed to two power transmission paths for running and working. It is essentially different from the invention.
- Patent Document 2 The invention described in Patent Document 2 is originally an invention related to the control of the inch clutch provided in the transmission, and is essentially different from the present invention which controls the input clutch provided between the engine and the transmission. Talk!
- the present invention has been made in view of such a situation, the clutch pressure of the input clutch,
- An object of the present invention is to make it easy to adjust the relationship with the braking force (brake pressure) generated by the brake device to a desired relationship with a simple configuration.
- the first invention is a first invention
- An input clutch provided between the engine and the transmission in the power transmission path of the engine traveling power train;
- Brake means for decelerating the vehicle body
- a brake control valve that operates so that the braking force of the brake means increases according to the valve position
- a brake operating means provided for operating the brake control valve, an oil passage force for supplying pressure oil to the input clutch, a branching oil passage, and a drain oil passage communicating with the tank;
- a pressure reducing valve that is provided in the drain oil passage and operates to increase the pressure oil flowing through the drain oil passage according to the valve position to reduce the clutch pressure of the input clutch.
- the brake operating means was mechanically connected to the valve operating member of the pressure reducing valve, and the valve operating member of the pressure reducing valve was mechanically connected to the valve operating member of the brake control valve.
- the second invention is the first invention
- valve actuating member of the pressure reducing valve was connected to the valve actuating member of the brake control valve via a spring.
- the third invention provides
- the driving force of the engine is transmitted to the drive wheels via the traveling power train and A control device for an input clutch of a work vehicle applied to a work vehicle transmitted to a hydraulic pump for a machine,
- An input clutch provided between the engine and the transmission in the power transmission path of the engine traveling power train;
- Brake means for decelerating the vehicle body
- a brake control valve that operates so that the braking force of the brake means increases according to the valve position
- a brake operating means provided for operating the brake control valve, an oil passage force for supplying pressure oil to the input clutch, a branching oil passage, and a drain oil passage communicating with the tank;
- a pressure reducing valve that is provided in the drain oil passage and operates to increase the pressure oil flowing through the drain oil passage according to the valve position to reduce the clutch pressure of the input clutch.
- the link mechanism mechanically connects the valve operating member of the pressure reducing valve and the valve operating member of the brake control valve, and mechanically connects the brake operating means to the link mechanism.
- the input clutch 6 is located between the engine 1 and the transmission 8 in the power transmission path 40 of the engine 1 of the wheel loader 100. Is provided.
- the vehicle body is decelerated by the brake means 11B, 12B.
- the brake control valve 17 operates so that the braking force of the brake means 11B and 12B increases according to the valve position.
- the brake operation means 19 is provided for operating the brake control valve 17.
- a drain oil passage DR is provided by branching from an oil passage 6K for supplying pressure oil to the input clutch 6, and the drain oil passage DR communicates with the tank 27.
- the drain oil passage DR is provided with a pressure reducing valve 18, and the pressure reducing valve 18 increases the pressure oil flowing through the drain oil passage DR according to the valve position to increase the clutch pressure of the input clutch 6. Make it smaller.
- the brake operating means 19 is mechanically coupled to a valve operating member (spool) of the pressure reducing valve 18.
- the pressure actuating member of the pressure reducing valve 18 is mechanically connected to the valve actuating member (spool) of the brake control valve 17 by a spring 28, for example.
- the pressure reducing valve 18 is configured as a manual pressure reducing valve 18 that is manually operated by the brake operating means 19, and the valve operating member of the pressure reducing valve 18 and the valve operating member of the brake control valve 17 are
- the relationship between the clutch pressure of the input clutch shown in Fig. 3 and the braking force (brake pressure) generated by the brake device can be easily set with a simple configuration in which the gap is simply connected by a connecting member such as a spring 28. it can.
- the link mechanism 30 mechanically connects the valve operating member (spool) of the pressure reducing valve 18 and the valve operating member (spool) of the brake control valve 17.
- the brake operating means 19 is mechanically connected to the link mechanism 30.
- the link actuating mechanism 30 mechanically connects the valve actuating member (spool) of the pressure reducing valve 18 and the valve actuating member (spool) of the brake control valve 17 by means of the link mechanism 30.
- FIG. 1 is a block diagram of a control device for an input clutch of a work vehicle according to an embodiment, and shows a configuration of a wheel loader with respect to a portion according to the present invention.
- the driving force of the engine 1 of the wheel loader 100 is supplied to the traveling power train and the working machine hydraulic pump 3 via the PTO shaft 2, and is distributed to the traveling horsepower and the working horsepower. Is done.
- the output shaft of the engine 1 of the wheel loader 100 is connected to the PTO shaft 2.
- the PTO shaft 2 is connected to the traveling power train and to the work machine hydraulic pump 3.
- the power transmission path 40 of the engine 1 corresponding to the travel power train is provided with a transmission 8 having a forward clutch, a reverse clutch, and each speed stage clutch.
- An input clutch (modulation clutch) 6 is provided in the power transmission path 40 of the engine 1, between the engine 1 and the transmission 8.
- the input clutch 6 is, for example, a wet multi-plate hydraulic clutch.
- the output of engine 1 is PTO shaft 2, input shaft 6N of input clutch 6, input clutch 6, output shaft 6S of input clutch 6, torque converter 7, transmission 8, and transfer 9 through front axle 11, rear Transmitted to axle 12.
- the output of the engine 1 is supplied to the work machine via the PTO shaft 2, the work machine pump 3, and the work machine control valve 5.
- the friction engagement force on the input shaft 6N side and the output shaft 6S side of the input clutch 6 is controlled.
- the clutch pressure Pc of the pressure oil supplied to the input clutch 6 is the maximum holding pressure, the input clutch 6 is completely connected (engaged).
- the clutch pressure Pc of the pressure oil supplied to the input clutch 6 is reduced from the holding pressure, the input clutch 6 shifts from the fully connected (engaged) state to the disconnected (released) state.
- the front axle 11 and the rear axle 12 are respectively provided with a front brake device 11B and a rear brake device 12B that decelerate the vehicle body by braking the axles 11, 12.
- the brake devices 11 B and 12 B are hydraulic brake devices that actuate or release (deactivate) the brake devices 11 B and 12 B according to the pressure (brake pressure) of the supplied hydraulic oil.
- the left brake pedal 19 as a brake operating means that is depressed by the operator's left foot, and on the right front side of the driver seat, the operator operates the right foot.
- a right brake pedal 16 is provided.
- the front brake 11B communicates with the outlet port 14D of the front brake control valve 14 via a brake pipe.
- the inlet port 14E of the front brake control valve 14 communicates with the discharge port of the hydraulic pump 13.
- the drain port 14R of the front brake control valve 14 communicates with the tank 27.
- the rear brake 12B communicates with an outlet port 15D of the rear brake control valve 15 via a brake pipe.
- the inlet port 15E of the rear brake control valve 15 communicates with the discharge port of the hydraulic pump 13.
- the drain port 15R of the rear brake control valve 15 It communicates with tank 27.
- the spool as the valve operating member of the front brake control valve 14 and the spool as the valve operating member of the rear brake control valve 15 are mechanically connected via a spring 24.
- a right brake pedal 16 is mechanically connected to a spool as a valve operating member of the front brake control valve 14.
- a return spring 25 is in contact with the spool of the rear brake control valve 15.
- the front brake control valve 14 has a brake operation position 14S and a brake release position 14K.
- the hydraulic oil pressure (brake pressure) supplied to the front brake device 11B varies depending on the valve position of the front brake control valve 14.
- the rear brake control valve 15 has a brake operating position 15S and a brake releasing position 15K. Depending on the valve position of the rear brake control valve 15, the pressure of the hydraulic oil (brake pressure) supplied to the rear brake device 12B changes.
- a brake system is assumed in which the braking force generated by the brake device 25 increases as the brake pressure increases.
- the brake control valve 17 is provided corresponding to the left brake pedal 19, and operates so that the braking force of the brake devices 11B and 12B increases according to the valve position.
- a drain oil passage DR is provided branched from a supply oil passage 6K that supplies pressure oil to the input clutch 6.
- the drain oil passage DR communicates with the tank 27.
- the drain oil passage DR is provided with a pressure reducing valve 18 that operates to increase the pressure oil flowing through the drain oil passage DR in accordance with the valve position to reduce the clutch pressure Pc of the input clutch 6. ing.
- the left brake pedal 19 is mechanically connected to a spool as a valve operating member of the pressure reducing valve 18, and the spool as the valve operating member of the pressure reducing valve 18 is a valve operating member of the brake control valve 17. Is mechanically connected to the spool.
- the discharge oil passage of the hydraulic pump 22 communicates with the inlet of the input clutch control valve 21.
- the outlet of the input clutch control valve 21 communicates with the supply oil passage 6K.
- the supply oil passage 6 K is an oil passage for supplying pressure oil to the input clutch 6 and communicates with the input clutch 6.
- the supply oil passage 6K is provided with a throttle 23 whose downstream side is the input clutch 6 clutch pressure Pc.
- the input clutch control valve 21 outputs, to the supply oil passage 6K, the original pressure pressure oil corresponding to a control signal to which a controller force (not shown) is also input.
- the pressure reducing valve 18 has a variable throttle 18S.
- the inlet port 18E of the pressure reducing valve 18 communicates with the downstream side of the throttle 23.
- the outlet port 18R of the pressure reducing valve 18 communicates with the tank 27.
- Pilot port 1 J communicates with outlet port 17D of brake control valve 17 via a pilot oil passage.
- the inlet port 17E of the brake control valve 17 is It communicates with the discharge port of the hydraulic pump 13.
- the drain port 17R of the brake control valve 17 communicates with the tank 27.
- a return spring 29 is in contact with the spool of the brake control valve 17.
- the brake control valve 17 has a brake operation position 17S and a brake release position 17K.
- the hydraulic oil pressure (brake pressure) supplied to the front brake device 11B and the rear brake device 12B changes according to the valve position of the brake control valve 17.
- the opening area of the variable throttle 18S of the pressure reducing valve 18 increases with an increase in the depression amount. For this reason, as the amount of pedaling operation (pedal stroke) of the left brake pedal 19 increases, the opening area of the variable throttle 18S of the pressure reducing valve 18 increases, so that the supply oil path 6K to the drain oil path DR and the pressure reducing valve 18 The flow rate of pressure oil discharged to the cylinder 27 increases.
- the clutch Pc of the input clutch 6 decreases.
- the clutch pressure Pc of the input clutch 6 decreases, the input clutch 6 slips, the driving force transmitted from the engine 1 to the transmission 8 via the input clutch 6 decreases, and the vehicle speed of the wheel loader 100 decreases.
- the brake control valve 17 When the left brake pedal 19 is returned, the brake control valve 17 is moved to the brake release position 17K side by the spring force of the return spring 29 and the spring force of the spring 28, and the pressure reducing valve 18 However, it is moved to the side which reduces the opening area of the variable aperture 18S. This enters The clutch pressure Pc of the clutch 6 increases.
- the pilot port 1 J of the front brake control valve 14 communicates with the tank 27 via the outlet port 17D and drain port 17R of the brake control valve 17, so the pilot port 1 J of the brake control valve 14
- the pie-mouth pressure acting on the tank becomes a low pressure equivalent to the tank pressure. For this reason, as described above, the front brake control valve 14 and the rear brake left control valve 15 are interlocked and moved to the brake release positions 14K and 15 ⁇ , respectively, and the front brake device 11B and the rear brake device 12B. Is released (released).
- FIG. 3 shows the amount of depressing operation of the left brake pedal 19 (pedal stroke; 0 to 100%), the clutch pressure Pc (kg / cm2) of the input clutch 6, the front brake device 11B, and the rear brake device 12B.
- the relationship with the generated braking force (brake pressure; kg / cm2) is shown.
- the characteristics shown in FIG. 3 are merely examples, and the present invention is not limited to such characteristics.
- the characteristics shown in FIG. 3 can be obtained by appropriately setting parameters such as the spring constant and free length of the spring 28.
- the pressure reducing valve 18 is configured as a manual pressure reducing valve 18 that is manually operated by the left brake pedal 19, and the spool of the pressure reducing valve 18 and the brake control valve 17 are A simple configuration in which the spool is simply connected to the spool by a spring 28, and the relationship between the clutch pressure of the input clutch 6 shown in Fig. 3 and the braking force (brake pressure) generated by the front and rear brake devices 11B and 12B is easy. Will be able to be set.
- FIG. 2 shows a modification of FIG.
- the same components as those in FIG. 1 are denoted by the same reference numerals, description thereof will be omitted as appropriate, and different portions will be described.
- the link mechanism 30 mechanically connects the valve operating member (spool) of the pressure reducing valve 18 and the valve operating member (spool) of the brake control valve 17, so The brake pedal 19 is mechanically connected to the link mechanism 30.
- the link mechanism 30 includes a link 31, a bracket 32, and a pin 33.
- a bracket 32 is fixed to the vehicle body, and the base end of the link 31 is rotatably connected to the bracket 32 via a pin 32. Has been.
- a rod 18AD is connected to a spool as a valve operating member of the pressure reducing valve 18.
- a rod 17AD is connected to a spool as a valve operating member of the brake control valve 17.
- a rod 18AD and a rod 17AD are in contact with each other at a predetermined distance.
- the rod 18AD, the rod 17AD, and the left brake pedal 19 are arranged to face each other via a link 31.
- a return spring 28 is in contact with the spool of the pressure reducing valve 18, and a return spring 29 is in contact with the spool of the brake control valve 17.
- the characteristics shown in FIG. 3 can be obtained by appropriately setting parameters such as a position where the link 31 of the link mechanism 30 contacts the rods 18AD, 17AD.
- the link mechanism 30 mechanically connects the spool (rod 18AD) of the pressure reducing valve 18 and the spool (rod 17AD) of the brake control valve 17 to the left.
- the clutch pressure Pc of the input clutch 6 shown in Fig. 3 and the braking force (brake pressure) generated by the front and rear brake devices 11B and 12B Relationships can be set easily.
- the pressure reducing valve 18 and the brake control valve 17 are connected by a spring 28.
- the connection may be made by another connecting member such as a cable or a rod. Yes, it is possible.
- the wheel loader has been described as a work vehicle.
- the present invention is applicable to other work vehicles as long as the work vehicle is provided with an input clutch (modulation clutch). The same can be applied.
- FIG. 1 is a block diagram of a control device for an input clutch of a work vehicle according to an embodiment, and shows a configuration of a wheel loader with respect to a portion according to the present invention.
- FIG. 2 is a diagram showing another embodiment which is a modification of FIG.
- Figure 3 shows the brake pedal depression amount (pedal stroke; 0 to 100%), the clutch pressure (kg / cm2) of the input clutch, and the braking force generated by the brake device (brake pressure; kg / cm2)
- FIG. 1 shows the brake pedal depression amount (pedal stroke; 0 to 100%), the clutch pressure (kg / cm2) of the input clutch, and the braking force generated by the brake device (brake pressure; kg / cm2)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/579,387 US7549522B2 (en) | 2004-09-15 | 2005-09-13 | Control device for input clutch of work vehicle |
CN2005800013439A CN1898114B (zh) | 2004-09-15 | 2005-09-13 | 作业车辆的输入离合器的控制装置 |
DE112005000092.3T DE112005000092B4 (de) | 2004-09-15 | 2005-09-13 | Steuervorrichtung für die Eingangskupplung eines Arbeitsfahrzeugs |
JP2006535148A JPWO2006030783A1 (ja) | 2004-09-15 | 2005-09-13 | 作業車両の入力クラッチの制御装置 |
SE0601059A SE531301C2 (sv) | 2004-09-15 | 2006-05-11 | Styranordning för ingångskoppling hos arbetsfordon |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004267703 | 2004-09-15 | ||
JP2004-267703 | 2004-09-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006030783A1 true WO2006030783A1 (ja) | 2006-03-23 |
Family
ID=36060034
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/016839 WO2006030783A1 (ja) | 2004-09-15 | 2005-09-13 | 作業車両の入力クラッチの制御装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7549522B2 (ja) |
JP (2) | JPWO2006030783A1 (ja) |
CN (1) | CN1898114B (ja) |
DE (1) | DE112005000092B4 (ja) |
WO (1) | WO2006030783A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010265978A (ja) * | 2009-05-14 | 2010-11-25 | Denso Corp | 車両の制御装置 |
CN112124281A (zh) * | 2018-08-25 | 2020-12-25 | 常州爱上学教育科技有限公司 | 车辆的挡位与停车制动的联动控制装置及其工作方法 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011119990B4 (de) * | 2011-12-02 | 2015-10-29 | Voith Patent Gmbh | Hydrodynamische Komponente |
CN103423304B (zh) * | 2012-05-14 | 2016-01-20 | 财团法人精密机械研究发展中心 | 液静压转盘安全油路装置 |
CN103423112B (zh) * | 2012-05-14 | 2016-01-06 | 财团法人精密机械研究发展中心 | 液静压转盘回生充电节能装置 |
CN102785652B (zh) * | 2012-08-17 | 2014-07-16 | 徐州徐工铁路装备有限公司 | 一种轮式工程机械综合控制系统 |
JP5668794B2 (ja) | 2013-06-19 | 2015-02-12 | 井関農機株式会社 | トラクタ |
CN106763301A (zh) * | 2016-12-20 | 2017-05-31 | 安徽兴林机械集团有限公司 | 一种气动离合器自动柔性启动装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62138116A (ja) * | 1985-12-12 | 1987-06-20 | 三菱農機株式会社 | 作業車輌における緊急停止装置 |
JPS6361342U (ja) * | 1986-10-13 | 1988-04-23 | ||
JPS6428328U (ja) * | 1987-08-11 | 1989-02-20 | ||
JPH03248929A (ja) * | 1990-02-26 | 1991-11-06 | Toyota Autom Loom Works Ltd | 産業車両におけるインチング制御装置 |
JPH03118123U (ja) * | 1990-03-17 | 1991-12-05 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3614998A (en) * | 1967-08-30 | 1971-10-26 | Int Harvester Co | Combined clutch and brake control system for a vehicle |
DE1780281C3 (de) * | 1967-08-30 | 1973-12-13 | International Harvester Co., Chicago, Ill. (V.St.A.) | Steuereinrichtung fur die hydrau hsche Beaufschlagung der Kupplung und der Bremsen eines Kraftfahrzeuges |
JPS5221132B2 (ja) * | 1971-11-16 | 1977-06-08 | ||
US4063624A (en) * | 1976-06-14 | 1977-12-20 | Caterpillar Tractor Co. | High-reliability air brake system with transmission neutralizer providing a plurality of operational modes |
US4222469A (en) * | 1978-11-22 | 1980-09-16 | Eaton Corporation | Inching control system for industrial lift trucks |
JPS6329616Y2 (ja) | 1980-12-26 | 1988-08-09 | ||
US4592455A (en) * | 1983-06-28 | 1986-06-03 | Massey-Ferguson Inc. | Clutch and transmission brake assembly |
JPS6361342A (ja) | 1986-09-02 | 1988-03-17 | Nec Corp | 制御用集積回路 |
JPS6428328A (en) * | 1987-07-22 | 1989-01-30 | Sumitomo Metal Ind | Heat treatment of clad steel pipe |
US4809586A (en) * | 1987-09-11 | 1989-03-07 | Deere & Company | Hydraulic system for a work vehicle |
JPH01186440A (ja) * | 1988-01-22 | 1989-07-25 | Daihatsu Motor Co Ltd | 車両用変速機のクラッチ装置 |
JPH0694150B2 (ja) | 1989-09-29 | 1994-11-24 | 株式会社名機製作所 | 圧力ホッパを備えたプランジャ式射出装置における材料計量方法 |
JPH10157580A (ja) * | 1996-12-02 | 1998-06-16 | Komatsu Ltd | クレーン車の油圧リターダ装置 |
JPH10291432A (ja) | 1997-04-22 | 1998-11-04 | Toyota Autom Loom Works Ltd | トルクコンバータ車の制動装置 |
JP2000142143A (ja) | 1998-11-18 | 2000-05-23 | Kubota Corp | 作業機の伝動装置 |
JP3830129B2 (ja) * | 2001-05-15 | 2006-10-04 | 本田技研工業株式会社 | 動力伝達装置 |
-
2005
- 2005-09-13 US US10/579,387 patent/US7549522B2/en not_active Expired - Fee Related
- 2005-09-13 CN CN2005800013439A patent/CN1898114B/zh not_active Expired - Fee Related
- 2005-09-13 JP JP2006535148A patent/JPWO2006030783A1/ja active Pending
- 2005-09-13 DE DE112005000092.3T patent/DE112005000092B4/de not_active Expired - Fee Related
- 2005-09-13 WO PCT/JP2005/016839 patent/WO2006030783A1/ja active Application Filing
-
2008
- 2008-12-05 JP JP2008310941A patent/JP4801719B2/ja not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62138116A (ja) * | 1985-12-12 | 1987-06-20 | 三菱農機株式会社 | 作業車輌における緊急停止装置 |
JPS6361342U (ja) * | 1986-10-13 | 1988-04-23 | ||
JPS6428328U (ja) * | 1987-08-11 | 1989-02-20 | ||
JPH03248929A (ja) * | 1990-02-26 | 1991-11-06 | Toyota Autom Loom Works Ltd | 産業車両におけるインチング制御装置 |
JPH03118123U (ja) * | 1990-03-17 | 1991-12-05 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010265978A (ja) * | 2009-05-14 | 2010-11-25 | Denso Corp | 車両の制御装置 |
CN112124281A (zh) * | 2018-08-25 | 2020-12-25 | 常州爱上学教育科技有限公司 | 车辆的挡位与停车制动的联动控制装置及其工作方法 |
Also Published As
Publication number | Publication date |
---|---|
US7549522B2 (en) | 2009-06-23 |
CN1898114B (zh) | 2010-05-12 |
DE112005000092T5 (de) | 2007-07-26 |
JP4801719B2 (ja) | 2011-10-26 |
JPWO2006030783A1 (ja) | 2008-05-15 |
CN1898114A (zh) | 2007-01-17 |
DE112005000092B4 (de) | 2019-08-29 |
US20070125614A1 (en) | 2007-06-07 |
JP2009107621A (ja) | 2009-05-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4801719B2 (ja) | 作業車両の入力クラッチの制御装置 | |
JP4956171B2 (ja) | 作業車両の制御装置 | |
US7517300B2 (en) | Retarding system implementing torque converter lockup | |
KR100509280B1 (ko) | 작업 차량의 주차 브레이크 장치 | |
JPH05246319A (ja) | 電気油圧式パーキングブレーキ制御システム | |
JP2005537171A (ja) | 作業車両の機能を制御するための方法及び装置 | |
JP3907464B2 (ja) | トラクタ | |
JPH04231222A (ja) | 工事用車両 | |
JP3441693B2 (ja) | 自動二輪車用ブレーキ制御装置 | |
JP2835996B2 (ja) | 産業車両の荷役及び走行制御装置 | |
JP4203356B2 (ja) | 作業車両の油圧回路 | |
JPH08197984A (ja) | ロータリ除雪車の動力伝達装置 | |
JPH10291432A (ja) | トルクコンバータ車の制動装置 | |
US4560148A (en) | Log skidder vehicle brake system | |
JP3670718B2 (ja) | 油圧走行車両の油圧制御装置 | |
JPH089308B2 (ja) | 油圧閉回路駆動型ホイ−ル式車輌 | |
JP4551573B2 (ja) | 作業車両の制動装置 | |
JP3913426B2 (ja) | 制動用油圧ブースタ装置 | |
JPS59149851A (ja) | ブレ−キ装置 | |
JPS6010229Y2 (ja) | 装輪式車両の緊急制動装置 | |
JP2527841Y2 (ja) | 液圧式走行ブレーキを備えた油圧駆動走行車両 | |
JPH0216900Y2 (ja) | ||
JP2011231821A (ja) | ホイール車両の油圧駆動装置 | |
SE531301C2 (sv) | Styranordning för ingångskoppling hos arbetsfordon | |
JPH09112584A (ja) | コンバインの走行部 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200580001343.9 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU LV MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
DPEN | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed from 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2006535148 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 06010599 Country of ref document: SE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007125614 Country of ref document: US Ref document number: 10579387 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1120050000923 Country of ref document: DE |
|
WWP | Wipo information: published in national office |
Ref document number: 06010599 Country of ref document: SE |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWP | Wipo information: published in national office |
Ref document number: 10579387 Country of ref document: US |
|
RET | De translation (de og part 6b) |
Ref document number: 112005000092 Country of ref document: DE Date of ref document: 20070726 Kind code of ref document: P |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8607 |
|
122 | Ep: pct application non-entry in european phase | ||
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8607 |