JPS5967120A - Running driving device for industrial vehicle - Google Patents

Running driving device for industrial vehicle

Info

Publication number
JPS5967120A
JPS5967120A JP17499082A JP17499082A JPS5967120A JP S5967120 A JPS5967120 A JP S5967120A JP 17499082 A JP17499082 A JP 17499082A JP 17499082 A JP17499082 A JP 17499082A JP S5967120 A JPS5967120 A JP S5967120A
Authority
JP
Japan
Prior art keywords
transmission
hydraulic
hydraulic motor
change
over valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP17499082A
Other languages
Japanese (ja)
Inventor
Masaaki Uno
宇「野」　正晃
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP17499082A priority Critical patent/JPS5967120A/en
Publication of JPS5967120A publication Critical patent/JPS5967120A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B60K17/10—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of fluid gearing

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Motor Power Transmission Devices (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)

Abstract

PURPOSE:To enable an ultra low speed operation down to zero speed to be performed by means of hydraulic drive in a device in which a transmission is connected to a prime mover through a main clutch by installing a hydraulic motor for driving a power system subsequent to the transmission. CONSTITUTION:When an engine 1 is driven, a hydraulic pump 9 is rotated through a group of gears 8. Discharged oil from the hydraulic pump 9 is returned back to an oil tank 16 through a discharging pipe 17, piping 19 and change-over valve 13 when the change-over valve 13 is set in its neutral position. Under direct driving condition, both a transmission 3 and a main clutch 2 are operated to perform high efficient operation. Under hydraulic driving operation, the main clutch 2 is disengaged and after PTO cluch 12 is engaged, the change- over valve 13 is changed over to its operating position, thereby the discharged oil from the hydraulic pump 9 is supplied to a hydraulic motor 10 through pipings 20A or 20B, the hydraulic motor is rotated to cause the group of gears in the transmission 3 to be rotated. Under low speed condition of the group of gears, the change-over valve 13 is controlled and an ultra low speed down to zero is attained.

Description

【発明の詳細な説明】 この発明は、原動機番こ主クラッチを介して連結したト
ランスミッションをそなえた産業車両の走行駆動装置に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a traveling drive system for an industrial vehicle, which is equipped with a transmission connected to a prime mover via a main clutch.

つぎに、建設機械の従来の走行駆動装置の一例を第１図
により説明する。Next, an example of a conventional traveling drive device for construction machinery will be explained with reference to FIG.

エンジンｌの出力軸は、ペダル４で操作する主クラッチ
２を介してトランスミッション３の入力がわに連結され
ており、トランスミッション３の出力かわば駆動ｔｉｖ
ｌｌ　６１こ連結されている。駆動軸５は車輪７をそな
えた車軸に連結されている、トランスミッション３の高
低速およｒｇ前後進の切替えは、固定板に設けたＨ形の
案内溝１４に沿って揺動させるミッションレバー５によ
り行うよ・）になっている。The output shaft of the engine 1 is connected to the input of a transmission 3 via a main clutch 2 operated by a pedal 4.
ll 61 pieces are connected. The drive shaft 5 is connected to an axle equipped with wheels 7. Switching of the transmission 3 between high and low speeds and RG forward and backward movement is performed by a mission lever 5 that swings along an H-shaped guide groove 14 provided on a fixed plate. It is done according to ・).

建設機械のような特殊用途の機械では、超低速が要求さ
れる。しかし、一般にトラックなどに多く使用されてい
るトランスミッションは、低速ギヤでも最高速度の１／
、ｏ程度の速度が出てしまう構造１こなっている。さら
に低速が必要な場合は、運転員はクラッチをすべらずこ
とで対処するが、その操作はむずかしい上に、クラッヂ
盤を非常ｌこ損傷する。Special-purpose machines such as construction machines require extremely low speeds. However, the transmissions commonly used in trucks and other vehicles generally operate at 1/1/2 of the maximum speed even in low gears.
, a structure 1 that achieves speeds of about o. If a lower speed is required, the operator can avoid slipping the clutch, but this operation is difficult and can seriously damage the clutch disc.

クラッチ操作による走行駆動装置は、効率は甑劣 いが操作性が禽り、油圧式の走行駆動装置は操作性は良
いが効率が劣る。Clutch-operated travel drive devices have poor efficiency but poor operability, and hydraulic travel drive devices have good operability but are poor in efficiency.

この発明は、前記両駆動装置の特長をそなえた走行駆動
装置を提供することを目的とするものである。The object of the present invention is to provide a traveling drive device that has the features of both of the above-mentioned drive devices.

４゜ この発明ζま、上記の目的を達するためのもので、原動
機に主クラッチを介して連結したトランスミッションを
そなえた産業車両の走行駆動装置において、トランスミ
ッションＰＴＯ部）こ、トランスミッション以降の動力
系を駆動する油圧モータをＰ　’ｒ　Ｏクラッチを介し
て連結し、原動機に連動する油圧ポンプの吐出がわと前
記油圧モータとを連結する油圧回路に、油圧モータの回
転を制御する切替弁を設けたことを特徴とする。4゜This invention ζ is aimed at achieving the above-mentioned object, and in a traveling drive system for an industrial vehicle equipped with a transmission connected to a prime mover via a main clutch, the present invention (transmission PTO section) is intended to improve the power system after the transmission. A hydraulic motor to be driven is connected via a P'rO clutch, and a switching valve for controlling rotation of the hydraulic motor is provided in a hydraulic circuit that connects the discharge side of a hydraulic pump interlocked with the prime mover and the hydraulic motor. It is characterized by

以下、この発明の一実施態様を第２図番こより説明する
。同図において、第１図と同じ符号をつけたものは同じ
ものを表わす。Hereinafter, one embodiment of the present invention will be explained with reference to FIG. 2. In this figure, the same reference numerals as in FIG. 1 represent the same parts.

エンジン１の出力がわと主りランチ２との間にはエンジ
ンｌに連動する歯車群８が設けられており、歯車群８は
油圧ポンプ９の入力軸１こ連結されている。A gear group 8 interlocked with the engine 1 is provided between the output arm of the engine 1 and the main launch 2, and the gear group 8 is connected to an input shaft of a hydraulic pump 9.

油圧ポンプ９の吸込管１５は油タンク１６に接続されて
おり、吐出管１７はリリーフ弁１８を介して油タンク１
６）こ接続されている。リリーフ弁１−８の前流がわに
おける吐出管１７部１こは配管１９が連結されており、
その配管１９は切替弁１３の中立位置１こおける中心油
路を介して油タンク１６に接続されている。切替弁１３
の作動ポートは配管２０Ａ、２０Ｂを介して油圧モータ
１０１こ連結されている。A suction pipe 15 of the hydraulic pump 9 is connected to an oil tank 16, and a discharge pipe 17 is connected to the oil tank 1 via a relief valve 18.
6) This is connected. A pipe 19 is connected to the discharge pipe 17 section 1 on the upstream side of the relief valve 1-8,
The piping 19 is connected to the oil tank 16 via a central oil passage located one neutral position of the switching valve 13. Switching valve 13
The operating port is connected to the hydraulic motor 101 via pipes 20A and 20B.

油圧モータ１０の出力軸はクラッチ１ツバ−２１により
操作するＰＴＯクラツヂ１２を介してトランスミ・ノシ
ョン３のＰＴＯ部１部面１結されている。The output shaft of the hydraulic motor 10 is connected to a PTO portion 1 of the transmission notation 3 via a PTO clutch 12 operated by a clutch 1 collar 21.

配管２０Ａ、２０Ｂにそれぞれ一端を連結し、他端を切
替弁１３の後流がわにおける配管１９部１こ連結した配
管２２Ａ、２２Ｂには、それぞれ配管１９がわへの油の
流れを阻止する逆止め弁２３Ａ、２３Ｂが取付けられて
いる。Pipes 22A and 22B each have one end connected to the piping 20A and 20B, and the other end connected to the piping 19 part 1 on the downstream side of the switching valve 13, to prevent oil from flowing to the piping 19. Check valves 23A and 23B are attached.

エンジンｌを駆動すると、歯車群８を介して油圧ポンプ
９が回転させられ、この油圧ポンプ９が油圧駆動時の油
圧源となる。油圧ポンプ９の吐出油は、切替弁１３の中
立位置では、吐出管１７、配管１９、切替弁１３を経て
油タンク１６に戻る直接駆動時１こは、第１図に示す従
来の走行駆動装置吉日様ｔこ、トランスミ・ンション３
の歯車の切替えと主クラッチ２の操作とにより駆動され
る。When the engine 1 is driven, a hydraulic pump 9 is rotated via a gear group 8, and this hydraulic pump 9 serves as a hydraulic pressure source during hydraulic drive. When the oil discharged from the hydraulic pump 9 is in the neutral position of the switching valve 13, it returns to the oil tank 16 through the discharge pipe 17, piping 19, and the switching valve 13.In the case of direct drive, the oil discharged from the hydraulic pump 9 returns to the oil tank 16 through the discharge pipe 17, piping 19, and the switching valve 13. Yoshihichi-sama tko, Transmission 3
It is driven by switching gears and operating the main clutch 2.

油圧駆動はつぎのようにして行われる。ペタル４を介し
て主クラッチ２を切り、クラ・ンチレ／＜−２１を介し
てＰ　Ｔ　Ｏクラッチ１２を入れた後、切替弁１３を作
動位置に切替える。その切替え１こより、油圧ポンプ９
からの吐出油は、配管２０Ａ１または２０　Ｔ３を経て
油圧モータ１０に供給され、油圧モータ１０を回転させ
る。したがって、トランスミッション３の歯車群が回転
させられる。油圧モータ１０の回転速度は、切替弁１３
の開度の調整で制御される。したがって、トランスミッ
ション３の歯車群が低速の状態で切替弁１３を制御すれ
ば、速度零までの超低速が自由に得られる。Hydraulic drive is performed as follows. After the main clutch 2 is disengaged via the pedal 4 and the PTO clutch 12 is engaged via the crankshaft/<-21, the switching valve 13 is switched to the operating position. From the switching 1, the hydraulic pump 9
The oil discharged from the hydraulic motor 10 is supplied to the hydraulic motor 10 through the pipe 20A1 or 20T3, and rotates the hydraulic motor 10. Therefore, the gear group of the transmission 3 is rotated. The rotational speed of the hydraulic motor 10 is determined by the switching valve 13.
It is controlled by adjusting the opening degree. Therefore, if the switching valve 13 is controlled while the gear group of the transmission 3 is at a low speed, an extremely low speed down to zero speed can be freely obtained.

トランスミッション３の切替えおよび切替弁１３の正逆
の切替えにより、前進、後進を任意に行うことができる
。By switching the transmission 3 and switching the switching valve 13 between forward and reverse directions, the vehicle can move forward or backward as desired.

以上説明したこの発明シこよれば下記の効果が得られる
。According to the invention described above, the following effects can be obtained.

（１）高速走行時１こは、直接駆動で高効率の運転を行
うことができ、低速走行時Ｉこは油圧駆動で速度零まで
の超低速運転を行うことができる。(1) When traveling at high speeds, direct drive allows for highly efficient operation, and when traveling at low speeds, hydraulic drive allows for ultra-low speed operation down to zero.

（２）１−ランスミッションおよび油圧モータの切替弁
を逆に切替えるだけで後進をさせることができる。(2) Reverse movement can be achieved by simply switching the 1-transmission and hydraulic motor switching valves in the opposite direction.

（３）クラッチ盤の損傷を軽減し、整備費、整備時間を
節約できる。(3) Damage to the clutch disk can be reduced and maintenance costs and time can be saved.

図、第２図（まこの発明の一実施態様を示す系統図であ
る。FIG. 2 is a system diagram showing one embodiment of the present invention.

■＠・エンジン、　　　２・・クラッチ、３・・トラン
スミッション、　　　４・・ペダル、５・・ミッション
レバー、　　６・・駆動軸、７・・車輪、　　８・・歯
車群、　　　９・・油圧ポンプ、　　　１０囃・油圧モ
ータ、 １１・嗜ＰＴＯ部、　　１２・・　ＰＴＯクラッチ１３
・・切替弁、　　　１６・・油タンク、１７１１・吐出
管、　　１９・・配管、２０Ａ、２０Ｂ＠−配管、　　
２１−−々う・ソチレバー、　　２２Ａ、２２１３譬・
配管、２３Ａ、２３Ｂ＠嗜逆市め弁■@・Engine, 2..Clutch, 3..Transmission, 4..Pedal, 5..Mission lever, 6..Drive shaft, 7..Wheels, 8..Gear group, 9..Hydraulic pump, 10. Hydraulic motor, 11. PTO section, 12. PTO clutch 13
...Switching valve, 16..Oil tank, 1711.Discharge pipe, 19..Piping, 20A, 20B@-piping,
21--Sotilever, 22A, 2213 parable.
Piping, 23A, 23B @ Kusakaichi Meben

Claims (1)

【特許請求の範囲】[Claims] 原動機に主クラッチを介して連結したトランスミッショ
ンをそなえた産業車両の走行駆動装置において、トラン
スミッションＰＴＯ部に、トランスミッション以降の動
力系を駆動する油圧モータをＰＴＯクラッチを介して連
結し、原動機に連動する油圧ポンプの吐出がわと前記油
圧モータとを連結する油圧回路に、油圧モータの回転を
制御する切替弁を設けたことを特徴とする走行駆動装置In a travel drive system for an industrial vehicle that is equipped with a transmission connected to the prime mover via a main clutch, a hydraulic motor that drives the power system after the transmission is connected to the transmission PTO section via the PTO clutch, and the hydraulic motor that is linked to the prime mover is connected to the transmission PTO section via the PTO clutch. A traveling drive device, characterized in that a hydraulic circuit connecting a discharge arm of a pump and the hydraulic motor is provided with a switching valve for controlling rotation of the hydraulic motor.
JP17499082A 1982-10-05 1982-10-05 Running driving device for industrial vehicle Pending JPS5967120A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17499082A JPS5967120A (en) 1982-10-05 1982-10-05 Running driving device for industrial vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17499082A JPS5967120A (en) 1982-10-05 1982-10-05 Running driving device for industrial vehicle

Publications (1)

Publication Number Publication Date
JPS5967120A true JPS5967120A (en) 1984-04-16

Family

ID=15988284

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17499082A Pending JPS5967120A (en) 1982-10-05 1982-10-05 Running driving device for industrial vehicle

Country Status (1)

Country Link
JP (1) JPS5967120A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62139817U (en) * 1986-02-28 1987-09-03
EP0353698A2 (en) * 1988-08-03 1990-02-07 Deere & Company Drive unit for motor vehicles
DE10251939A1 (en) * 2002-11-08 2004-05-19 Zf Friedrichshafen Ag Producing low speed in motor vehicle involves slowly increasing torque and hence causing vehicle to creep if starting gear selected, clutch disengaged, brake system and gas pedal not being operated
GB2475050A (en) * 2009-11-03 2011-05-11 Agco Sa Tractor
KR101963837B1 (en) * 2017-12-19 2019-07-31 금아파워텍주식회사 Hydraulic Hybrid Transmission with Hydraulic Motor and Torque Converter in Transmission

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62139817U (en) * 1986-02-28 1987-09-03
EP0353698A2 (en) * 1988-08-03 1990-02-07 Deere & Company Drive unit for motor vehicles
DE10251939A1 (en) * 2002-11-08 2004-05-19 Zf Friedrichshafen Ag Producing low speed in motor vehicle involves slowly increasing torque and hence causing vehicle to creep if starting gear selected, clutch disengaged, brake system and gas pedal not being operated
GB2475050A (en) * 2009-11-03 2011-05-11 Agco Sa Tractor
US8924093B2 (en) 2009-11-03 2014-12-30 Agco Sa Power take off for tractor
KR101963837B1 (en) * 2017-12-19 2019-07-31 금아파워텍주식회사 Hydraulic Hybrid Transmission with Hydraulic Motor and Torque Converter in Transmission

Similar Documents

Publication Publication Date Title
US4313351A (en) Multiple-power gear drive transmission and drive assembly including such transmission, and brake energy accumulator
US4471669A (en) Track drive system with dual mode steering
US8696509B2 (en) Power split transmission
EP0417283A1 (en) Mechanical-hydraulic transmission gear and method of controlling same
WO2004104449A1 (en) Speed-changing device
JPH08282311A (en) Torque partition transmission
JPH10159939A (en) Hydraulic mechanical transmission
US6543311B1 (en) Driving system for industrial trucks
JP2904919B2 (en) Drive with switching gearbox
JPH01234654A (en) Static pressure gearing and control method thereof
KR101509917B1 (en) Transmission apparatus of vehicle and controlling method thereof
JPH10122336A (en) Hydro-mechanical transmission
US20180195595A1 (en) Power split and variable creep drive system for street sweeper or like specialty vehicle
KR20010032678A (en) Hydromechanical travelling mechanism
JP2844459B2 (en) Mechanical hydraulic transmission and control method thereof
JPS5967120A (en) Running driving device for industrial vehicle
JP4220663B2 (en) Hydraulic and mechanical continuously variable transmission
JP2001336602A (en) Hydraulic driving system for plurality of motors
JP3217565B2 (en) Power transmission device for hydraulically driven tracked vehicles
JP4605567B2 (en) Hydraulic-mechanical continuously variable transmission
US4306640A (en) Multi-range hydraulic drive
JPH1096460A (en) Shift steering device and crawler vehicle therewith
JPH06265013A (en) Hst hydraulic travel driving device
JP2717671B2 (en) Mechanical hydraulic transmission and control method thereof
JP3438929B2 (en) Variable speed traveling control device for hydraulically driven tracked vehicles