CN101223385A - Transmission - Google Patents

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Publication number
CN101223385A
CN101223385A CN200680026119.XA CN200680026119A CN101223385A CN 101223385 A CN101223385 A CN 101223385A CN 200680026119 A CN200680026119 A CN 200680026119A CN 101223385 A CN101223385 A CN 101223385A
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China
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mentioned
pto
shaft
running system
hst
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CN200680026119.XA
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Chinese (zh)
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CN101223385B (en
Inventor
芝健二
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Yanmar Co Ltd
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Yanmar Co Ltd
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Priority claimed from JP2005208881A external-priority patent/JP2007024225A/en
Priority claimed from JP2005208882A external-priority patent/JP2007024226A/en
Priority claimed from JP2005208879A external-priority patent/JP2007024223A/en
Priority claimed from JP2005208880A external-priority patent/JP2007024224A/en
Application filed by Yanmar Co Ltd filed Critical Yanmar Co Ltd
Priority claimed from PCT/JP2006/314141 external-priority patent/WO2007010883A1/en
Publication of CN101223385A publication Critical patent/CN101223385A/en
Application granted granted Critical
Publication of CN101223385B publication Critical patent/CN101223385B/en
Expired - Fee Related legal-status Critical Current
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Abstract

A transmission comprising a transmission case storing a planetary gear mechanism, a traveling system gear transmission mechanism, a differential gear mechanism, and a PTO system clutch mechanism and supporting a HST. The HST is connected to the vehicle longitudinal one side first end wall of the transmission case in such a state that a HST output shaft is positioned on the upper side of a HST input shaft. A plurality of traveling system rotating shafts forming a traveling system transmission route are disposed coaxially with the HST output shaft or on the vehicle lateral one lower side of the HST output shaft. A plurality of PTO system rotating shafts forming a PTO system transmission route are disposed coaxially with the HST input shaft or on the lower side of the HST input shaft.

Description

Gearbox
Technical field
The present invention relates to the gearbox that working trucks such as tractor are used.
Background technique
The gearbox of known vehicle, having the transmission of power of driving source is drive path to the running system drive path of pairing left and right main drive wheel with the transmission of power of above-mentioned driving source to the PTO of PTO axle.
For example, following patent documentation 1 discloses following gearbox, the running system gear shift of the planetary gears of importing constant speed power and variable-speed dynamic respectively by the HST that is being connected with the action of above-mentioned driving source, from pump shaft and the motor drive shaft of above-mentioned HST, the output of the above-mentioned planetary gears of input, be provided in the differential gear mechanism of level behind the above-mentioned running system gear shift, formed above-mentioned running system drive path.
For this gearbox, be not transformed to hydraulic pressure by the part of the power of above-mentioned running system drive path transmission, so transmission efficiency is effective.
But, be above-mentioned running system driving mechanism and above-mentioned PTO driving mechanism dispose compacter aspect, still leave some room for improvement.
In addition, following patent documentation 2 discloses following gearbox, have gearbox casing, be connected the HST of this gearbox casing front, and be provided in running system gear shift in the above-mentioned gearbox casing, differential gear mechanism, PTO system clutch mechanism and PTO are gear shift, and have from the output shaft of above-mentioned HST by above-mentioned running system gear shift and the above-mentioned differential gear mechanism running system drive path to a pair of main drive wheel transferring power, with the input shaft from above-mentioned HST be drive path by above-mentioned PTO clutch mechanism and above-mentioned PTO gear shift to the PTO of PTO axle transferring power.
In the above-mentioned gearbox before,, be above-mentioned running system drive path and above-mentioned PTO that drive path is intensive respectively in the left side and the right side from the front, can prevent the mutual interference of each drive path, but, aspect the compactness of gearbox integral body, still leave some room for improvement.
Promptly, in the above-mentioned gearbox before, by being configured in HST input shaft directly over the HST output shaft, seeing from the front being configured in the bottom-right PTO of this HST input shaft is variable-speed shaft, being that variable-speed shaft is provided in the couple axle and the middle PTO axle of below successively and is provided in the back PTO axle that above-mentioned PTO is the variable-speed shaft top from above-mentioned PTO, having formed above-mentioned PTO is drive path, thereby cause the whole maximization of gearbox, the especially maximization of above-below direction.
In addition, running system drive path in the above-mentioned gearbox before has the above-mentioned HST output shaft that is provided under the above-mentioned HST output shaft, sees the reduction gear that is configured in the upper left running system variable-speed shaft of above-mentioned HST output shaft, passes to above-mentioned differential gear mechanism after the rotating power of above-mentioned running system variable-speed shaft is slowed down from the front, is provided in the running system transmission shaft of above-mentioned running system variable-speed shaft below and sees the front wheel driving shaft that is provided in above-mentioned running system variable-speed shaft left from the front.But, above above-mentioned running system variable-speed shaft and the left of above-mentioned HST input shaft, produced dead space, can not make the gearbox integral miniaturization fully.
The 1st mode of the present invention is made in view of above-mentioned technology before, its objective is the gearbox that a kind of vehicle is provided, this gearbox has and the power of driving source is delivered to the running system drive path of pairing left and right main drive wheel by HST, running system gear shift and differential gear mechanism and is the power of above-mentioned driving source that to output to outside PTO be drive path to clutch mechanism by PTO.Can take in above-mentioned running system drive path of formation and above-mentioned PTO compactly is the driving mechanism of drive path.
In addition, in the above-mentioned patent documentation 2 disclosed gearboxes, end face at gearbox casing is connecting HST, and accommodating follow-up running system driving mechanism of above-mentioned HST and PTO in this gearbox casing is driving mechanism, by being located at the suction filter of this gearbox casing one end face, can take out the oil storage in the above-mentioned gearbox casing.
Oil storage in the above-mentioned gearbox casing for example can be used as the supply oil sources that the HST to the part that constitutes above-mentioned running system driving mechanism supplies with.Like this, do not need other fuel tank maybe can realize miniaturization.
But, as previously mentioned, have in the gearbox that running system driving mechanism and PTO are driving mechanism, according to different specifications, except main running system output shaft and main PTO axle, also be provided with secondary running system output shaft and secondary PTO axle sometimes.
About this point, disclosed structure is in the following patent documentation 2, on an end face of the gearbox casing that is connecting HST, is provided with that preceding power as the effect of above-mentioned secondary running system output shaft takes out axle and as the middle PTO axle of above-mentioned secondary PTO axle effect.
Like this, though proposed above-mentioned HST, above-mentioned secondary running system output shaft, above-mentioned secondary PTO axle and above-mentioned suction filter are located at scheme on the same wall of above-mentioned gearbox casing, reckon without their high-efficient disposition.
That is, when above-mentioned HST, above-mentioned secondary running system output shaft, above-mentioned secondary PTO axle and above-mentioned suction filter being located on the same wall of gearbox casing, must consider the interference of the transmission shaft that is connected with them, pipe arrangement etc., not take into full account about this point.
The 2nd mode of the present invention is made in view of above-mentioned technology before, its objective is the gearbox that vehicle is provided, this gearbox has the running system driving mechanism that comprises HST and comprises PTO is that the PTO of clutch mechanism is a driving mechanism, but on an end wall of the gearbox casing of oil storage, be provided with above-mentioned HST, secondary running system output shaft, secondary PTO axle and suction filter, can prevent the maximization of gearbox casing, and, transmission shaft that setting easily is connected with HST, secondary running system output shaft and secondary PTO axle and the pipe arrangement that is being connected with suction filter.
In addition, the gearbox of above-mentioned patent documentation 1 record, except above-mentioned running system driving mechanism and above-mentioned PTO are the driving mechanism, also having on the transmission of power of above-mentioned driving source is driving mechanism to the service pump of service pump body.
Specifically, in the above-mentioned gearbox before, above-mentioned HST is connected on the antetheca of gearbox casing, by the service pump transmission shaft of with the pump shaft arranged coaxial of this HST, transmission of power to the service pump body that is bearing on the above-mentioned gearbox casing rear wall.
But in the above-mentioned gearbox before, above-mentioned service pump is with transmission shaft and to constitute above-mentioned PTO be that the various PTO of driving mechanism are running shaft, above a pair of differential output shaft in above-mentioned differential gear mechanism, extends along the vehicle fore-and-aft direction.
Therefore, is that running shaft and above-mentioned differential gear mechanism are interfered for fear of above-mentioned service pump with transmission shaft, above-mentioned PTO, and above-mentioned HST and above-mentioned differential gear mechanism are in the vehicle-width direction staggered positions, therefore, cause grow up of gearbox casing at vehicle-width direction.
The 3rd mode of the present invention is made in view of above-mentioned technology before, its objective is the gearbox that a kind of vehicle is provided, in this gearbox, the running system gear shift, differential gear mechanism and PTO are that clutch mechanism is housed in the gearbox casing, on the 2nd end wall of the 1st end wall of vehicle fore-and-aft direction one side of this gearbox casing and opposite side, connecting HST and service pump device respectively, and, main PTO axle reaches foreign side from above-mentioned the 2nd end wall, be configured to cross over the transmission shaft of the mode of above-mentioned differential gear mechanism efficiently along the extension of vehicle fore-and-aft direction, like this, can realize the miniaturization as much as possible of gearbox casing.
In addition, in the gearbox of above-mentioned patent documentation 1 record, dispose above-mentioned running system driving mechanism and above-mentioned PTO how compactly and be aspect the driving mechanism, still leave some room for improvement.
That is, in the above-mentioned gearbox before, be the state that benchmark is provided in vehicle fore-and-aft direction one side with above-mentioned differential gear mechanism at above-mentioned HST, from the opposite side of vehicle fore-and-aft direction to above-mentioned differential gear mechanism transferring power.
In this structure, several running system running shafts and the PTO that extend along the vehicle fore-and-aft direction are the top that running shaft is provided in above-mentioned differential gear mechanism, and being provided with of brake operating axle that sets along vehicle-width direction and differential locking service axis is difficult.
The 4th mode of the present invention is made in view of above-mentioned technology before, its objective is provides a kind of gearbox, this gearbox has the running system driving mechanism that comprises HST, planetary gears, running system gear shift and differential gear mechanism and comprises PTO is that the PTO of clutch mechanism is a driving mechanism, do not cause the maximization of gearbox casing, above above-mentioned differential gear mechanism, can guarantee big as far as possible free space.
In addition, as 1 record of above-mentioned patent documentation, have the running system driving mechanism and PTO is in the above-mentioned gearbox of driving mechanism, wish according to different usage mode, can be corresponding to all size.
That is, wish as much as possible with the constituent part generalization, can be corresponding to the specification of the sense of rotation that except main PTO axle, also has the specification of secondary PTO axle, changeable above-mentioned main PTO axle etc.
But, in the prior art, still do not have the gearbox of having considered above requirement.
The 5th mode of the present invention is made in view of above-mentioned technology before, its objective is the gearbox that a kind of vehicle is provided, this gearbox includes the power of driving source is passed through HST, running system gear shift and differential gear mechanism pass to the running system drive path of pairing left and right main drive wheel, with to be clutch mechanism output to outside PTO from main PTO axle is drive path by PTO the power of above-mentioned driving source, can easily carry out except above-mentioned main PTO axle also can be from the axial specification of outside output of secondary PTO, and the specification change between the specification of the above-mentioned main PTO axle sense of rotation of switching.
Patent documentation 1: TOHKEMY 2003-207021 communique
Patent documentation 2: No. 3636594 communique of Japan Patent
Summary of the invention
To achieve these goals, the gearbox that the present invention's the 1st mode provides, include the power of driving source by HST, running system gear shift and differential gear mechanism pass to the pairing left and right main drive wheel the running system drive path and the power of above-mentioned driving source by PTO be clutch mechanism to output to outside PTO be drive path, having and accommodating above-mentioned running system gear shift, above-mentioned differential gear mechanism, above-mentioned PTO is clutch mechanism and the gearbox casing that supports above-mentioned HST.Above-mentioned HST, the state above the HST output shaft is positioned at the HST input shaft is being connected with the 1st end wall of vehicle fore-and-aft direction one side's side of above-mentioned gearbox casing.Several running system running shafts that setting along the vehicle fore-and-aft direction, promptly form several running system running shafts of above-mentioned running system drive path, dispose with one heart with above-mentioned HST output shaft, perhaps be configured in the vehicle-width direction one side's side and the below of this HST output shaft.Several PTO that several PTO that setting along the vehicle fore-and-aft direction are running shaft, promptly to form above-mentioned PTO be drive path are running shaft, dispose with one heart with above-mentioned HST input shaft, perhaps are configured in the below of this HST input shaft.
According to this structure, can make running system gear shift and the differential gear mechanism that constitutes the running system driving mechanism and constitute PTO is that the PTO of driving mechanism is a clutch mechanism, intensive efficiently configuration respectively like this, can realize the compactness of gearbox casing in gearbox casing.
In a mode, also have be housed in the above-mentioned gearbox casing, constitute above-mentioned running system drive path be provided in planetary gears between above-mentioned HST and the above-mentioned running system gear shift partially.
In this mode, above-mentioned running system running shaft can include planet output shaft, running system transmission shaft and running system variable-speed shaft; Above-mentioned planet output shaft is being connected with the carry-out part action of above-mentioned planetary gears that the rotating power of above-mentioned HST output shaft and above-mentioned HST input shaft is synthetic, disposes coaxially with above-mentioned HST output shaft; Above-mentioned running system transmission shaft, with respect to above-mentioned planet output shaft towards vehicle-width direction one side's side staggered positions; Above-mentioned running system variable-speed shaft, be connected with above-mentioned running system transmission shaft action by above-mentioned running system gear shift, and the input ring gear transmitting rotary power in above-mentioned differential gear mechanism is to be arranged in the below that is configured in above-mentioned running system transmission shaft with the mode of the roughly the same height of a pair of differential output shaft of this differential gear mechanism.
Above-mentioned PTO is a running shaft, and can include PTO is that input shaft, PTO are clutch shaft, main PTO transmission shaft and main PTO axle;
Above-mentioned PTO is an input shaft, with above-mentioned HST input shaft on coaxial, can not rotate around axis; Above-mentioned PTO is a clutch shaft, is that clutch mechanism is that the input shaft action is being connected with above-mentioned PTO by above-mentioned PTO, and being configured in above-mentioned PTO is below the input shaft and in vehicle-width direction the opposing party side; Above-mentioned main PTO transmission shaft is that the clutch shaft action is being connected with above-mentioned PTO, is configured in the below that above-mentioned PTO is a clutch shaft, and is vehicle-width direction one side's side of clutch shaft at this PTO; Above-mentioned main PTO axle is being connected with transmission shaft action with above-mentioned main PTO, from above-mentioned gearbox casing, with 2nd end wall of above-mentioned the 1st end wall at vehicle fore-and-aft direction opposition side, be bearing on the 2nd end wall with reaching foreign side.
Above-mentioned main PTO transmission shaft extends along the vehicle fore-and-aft direction below above-mentioned a pair of differential output shaft.
In the another way, also have be housed in the above-mentioned gearbox casing and constitute above-mentioned running system drive path be provided in the planetary gears between above-mentioned HST and the above-mentioned running system gear shift partially and be housed in above-mentioned gearbox casing interior and to constitute above-mentioned PTO be that the PTO of the part of drive path is a gear shift.
In this another way, above-mentioned running system running shaft can comprise planet output shaft, running system transmission shaft and running system variable-speed shaft; Above-mentioned planet output shaft is being connected with the carry-out part action of above-mentioned planetary gears that the rotating power of above-mentioned HST output shaft and above-mentioned HST input shaft is synthetic, disposes coaxially with above-mentioned HST output shaft; Above-mentioned running system transmission shaft, with respect to above-mentioned planet output shaft towards vehicle-width direction one side's side staggered positions; Above-mentioned running system variable-speed shaft, be connected with above-mentioned running system transmission shaft action by above-mentioned running system gear shift, and the input ring gear transmitting rotary power in above-mentioned differential gear mechanism is to be arranged in the below that is configured in above-mentioned running system transmission shaft with the mode of the roughly the same height of a pair of differential output shaft of this differential gear mechanism.
Above-mentioned PTO is that can to include PTO be that input shaft, PTO are that clutch shaft, PTO are variable-speed shaft and main PTO axle to running shaft; Above-mentioned PTO is an input shaft, with above-mentioned HST input shaft on coaxial, can not rotate around axis; Above-mentioned PTO is a clutch shaft, be clutch mechanism with above-mentioned PTO by above-mentioned PTO is that the input shaft action is being connected, and is configured in below that above-mentioned PTO is an input shaft and in vehicle-width direction the opposing party side; Above-mentioned PTO is a variable-speed shaft, is that gear shift is that the clutch shaft action is being connected with above-mentioned PTO by above-mentioned PTO, is configured in the below that above-mentioned PTO is a clutch shaft, and is vehicle-width direction one side's side of clutch shaft at this PTO; Above-mentioned main PTO axle is that variable-speed shaft action is being connected with above-mentioned PTO, from above-mentioned gearbox casing, with 2nd end wall of above-mentioned the 1st end wall at vehicle fore-and-aft direction opposition side, be bearing on the 2nd end wall with reaching foreign side.
Above-mentioned PTO is a variable-speed shaft, is configured in the below of a pair of differential output shaft in the above-mentioned differential gear mechanism; Above-mentioned main PTO axle is that the variable-speed shaft action is being connected by main PTO with transmission shaft and above-mentioned PTO, and to be variable-speed shaft on coaxial with transmission shaft and above-mentioned PTO can not be connected with the relative rotation and pass below the above-mentioned a pair of differential output shaft this main PTO around axis.
In above-mentioned another way, above-mentioned running system running shaft can have secondary running system output shaft, and this pair running system output shaft is connected with above-mentioned running system variable-speed shaft action, and is provided in the below of this running system variable-speed shaft, reaches foreign side from above-mentioned the 1st end wall.
Above-mentioned PTO is a running shaft, for example can have PTO is pony axle, and this PTO is a pony axle with above-mentioned PTO is that clutch shaft and above-mentioned PTO are that the variable-speed shaft both sides move to be connected ground, to be provided in this PTO and are the clutch shaft below and are the vehicle-width direction opposite side of variable-speed shaft at this PTO.
Above-mentioned secondary running system output shaft among above-mentioned running system running shaft, is positioned at below.
As an alternative, above-mentioned PTO is that running shaft can have secondary PTO axle, and this secondary PTO axle is vehicle-width direction the opposing party side of variable-speed shaft at above-mentioned PTO, is that the variable-speed shaft action is connected with this PTO, reaches foreign side from above-mentioned the 1st end wall.
In this structure, above-mentioned secondary running system output shaft among above-mentioned running system running shaft, is positioned at below.And above-mentioned secondary PTO axle among above-mentioned PTO is running shaft, is positioned at below.
To achieve these goals, the gearbox of the vehicle that the present invention's the 2nd mode provides is connecting HST and suction filter on the 1st end wall of gearbox casing, and secondary running system output shaft and secondary PTO axle stretch out from the 1st end wall; Above-mentioned suction filter is being connected with above-mentioned the 1st end wall, the position of its vehicle-width direction is, from the plane, at least a portion and above-mentioned HST are overlappingly between above-mentioned secondary running system output shaft and above-mentioned secondary PTO axle, and, its above-below direction position is, see from the side, at least a portion and above-mentioned secondary running system output shaft and above-mentioned secondary PTO axle overlappingly, be positioned at the lower position of above-mentioned HST.
According to this structure, can prevent the maximization of gearbox casing, the pipe arrangement that configuration easily and HST, secondary running system output shaft and secondary PTO axle are being connected transmission shaft and are being connected with suction filter.
In addition, to achieve these goals, the gearbox of the vehicle that the 2nd mode of the present invention provides, include the power of driving source by HST, planetary gears, running system gear shift, and differential gear mechanism passes to the running system drive path of pairing left and right main drive wheel and be the power of above-mentioned driving source that the PTO that clutch mechanism outputs to the outside is a drive path by PTO.Above-mentioned planetary gears, above-mentioned running system gear shift, above-mentioned differential gear mechanism and above-mentioned PTO are but that clutch mechanism is housed in the gearbox casing of oil storage.Above-mentioned HST is connected with the 1st end wall outer surface of vehicle fore-and-aft direction one side's side of above-mentioned gearbox casing, and this gearbox can take out oil storage in the above-mentioned gearbox casing by suction filter.Form above-mentioned running system drive path, along the running system running shaft of vehicle fore-and-aft direction, include planet output shaft, running system transmission shaft, running system variable-speed shaft and secondary running system output shaft; Above-mentioned planet output shaft is being connected with the carry-out part action of the above-mentioned planetary gears that the rotating power of above-mentioned HST output shaft and above-mentioned HST input shaft is synthesized, with above-mentioned HST output configuration coaxially; Above-mentioned running system transmission shaft, with respect to above-mentioned planet output shaft towards vehicle-width direction one side staggered positions; Above-mentioned running system variable-speed shaft is provided in above-mentioned running system transmission shaft below, and from the rotating power of above-mentioned running system transmission shaft after by above-mentioned running system gear shift speed change, is delivered to the input ring gear in the above-mentioned differential gear mechanism.Above-mentioned secondary running system output shaft is provided in above-mentioned running system variable-speed shaft below, and, be connected with this running system variable-speed shaft action, reach foreign side from above-mentioned the 1st end wall.Form above-mentioned PTO and be drive path, be running shaft along the PTO of vehicle fore-and-aft direction, include PTO and be input shaft, PTO and be clutch shaft, main PTO with transmission shaft, main PTO axle and secondary PTO axle; Above-mentioned PTO is an input shaft, dispose coaxially with above-mentioned HST input shaft, and this HST input shaft rotates around axis relatively; Above-mentioned PTO is a clutch shaft, is that clutch mechanism is that the input shaft action is being connected with above-mentioned PTO by above-mentioned PTO, and being configured in above-mentioned PTO is below the input shaft and in vehicle-width direction the opposing party side; Above-mentioned main PTO transmission shaft is that the clutch shaft action is being connected with above-mentioned PTO, and being configured in above-mentioned PTO is the clutch shaft below; Above-mentioned main PTO axle is being connected with transmission shaft action with above-mentioned main PTO, from above-mentioned gearbox casing, with 2nd end wall of above-mentioned the 1st end wall at vehicle fore-and-aft direction opposition side, be bearing on the 2nd end wall with stretching out foreign side; Above-mentioned secondary PTO axle is being connected with the transmission shaft action with above-mentioned main PTO, reaches foreign side from above-mentioned the 1st end wall.Above-mentioned suction filter is being connected with above-mentioned the 1st end wall, the position of its vehicle-width direction is, from the plane, at least a portion and above-mentioned HST are overlappingly between above-mentioned secondary running system output shaft and above-mentioned secondary PTO axle, and, the position of its above-below direction is, see from the side, at least a portion and above-mentioned secondary running system output shaft and above-mentioned secondary PTO axle overlappingly, be positioned at above-mentioned HST lower position.
In a mode, also having and being housed in the PTO that above-mentioned gearbox casing is interior, the above-mentioned PTO of formation is the part of drive path is gear shift.
In this mode, above-mentioned PTO be running shaft also to comprise PTO be variable-speed shaft, this PTO is a variable-speed shaft, being the rotating power of clutch shaft from above-mentioned PTO, by above-mentioned PTO is that gear shift is delivered to above-mentioned main PTO transmission shaft, and disposes coaxially with transmission shaft with above-mentioned main PTO.Above-mentioned secondary PTO axle is that gear shifting operation is being connected with above-mentioned PTO.
Preferably, above-mentioned HST, the state above the HST output shaft is positioned at the HST input shaft is being connected with the 1st end wall of above-mentioned gearbox casing.
In addition, also can have the service pump device, this service pump device, attract oil storage in the above-mentioned gearbox casing by above-mentioned suction filter, with the 2nd end wall of the vehicle-width direction opposition side of above-mentioned the 1st end wall in, be connected with above-mentioned gearbox casing, and, by being that the service pump that input shaft action is being connected is driven in rotation with transmission shaft with above-mentioned PTO.
In this structure, above-mentioned service pump is benchmark with transmission shaft and above-mentioned main PTO transmission shaft with a pair of differential output shaft in the above-mentioned differential gear mechanism, is disposing dividually up and down.
To achieve these goals, the gearbox of the vehicle that the present invention's the 3rd mode provides, running system gear shift, differential gear mechanism, and PTO be that clutch mechanism is housed in the gearbox casing, on the 2nd end wall of the 1st end wall of vehicle fore-and-aft direction one side's side of this gearbox casing and opposite side, connecting HST and service pump device respectively, and main PTO axle reaches foreign side from above-mentioned the 2nd end wall.The a pair of differential output shaft of above-mentioned differential gear mechanism is being connected with a pair of drive axle action that is configured in this a pair of differential output shaft below by train of reduction gears.To the main PTO transmission shaft of above-mentioned main PTO axle transferring power, below above-mentioned a pair of differential output shaft, utilize the space between above-mentioned a pair of drive axle to extend along the vehicle fore-and-aft direction.To the service pump transmission shaft of above-mentioned service pump device transferring power, above above-mentioned a pair of differential output shaft, extend along the vehicle fore-and-aft direction.
According to this structure, can realize gearbox casing miniaturization as much as possible.
In addition, to achieve these goals, the gearbox of the vehicle that the present invention's the 3rd mode provides has: HST, gearbox casing, planetary gears, running system gear shift, PTO are that clutch mechanism, differential gear mechanism, a pair of drive axle, planet output shaft, running system transmission shaft, running system variable-speed shaft, PTO are that input shaft, PTO are clutch shaft, main PTO with transmission shaft, main PTO axle, service pump with transmission shaft, service pump device.Above-mentioned HST has HST input shaft and HST output shaft.Above-mentioned gearbox casing has the 1st end wall, midfeather and the 2nd end wall that extend in an approximate vertical direction that are disposing successively from vehicle fore-and-aft direction one side's side towards the opposing party's side, at the outer surface of above-mentioned the 1st end wall, is connecting above-mentioned HST.Above-mentioned planetary gears, running system gear shift and PTO are clutch mechanism, are housed in the 1st space in the above-mentioned gearbox casing inner space, that surrounded by above-mentioned the 1st end wall and above-mentioned midfeather.Above-mentioned differential gear mechanism is housed in the 2nd space in the above-mentioned gearbox casing inner space, that surrounded by above-mentioned midfeather and above-mentioned the 2nd end wall.Above-mentioned a pair of drive axle, be arranged in above-mentioned differential gear mechanism ground, a pair of differential output shaft below, be connected with this a pair of differential output shaft action respectively by train of reduction gears.Above-mentioned planet output shaft is being connected with the carry-out part action of the above-mentioned planetary gears that the rotating power of above-mentioned HST output shaft and above-mentioned HST input shaft is synthesized, and is bearing in coaxially on the above-mentioned midfeather with above-mentioned HST output.Above-mentioned running system transmission shaft, be positioned at above-mentioned planet output shaft vehicle width one side's side ground, be bearing on above-mentioned the 1st end wall and the above-mentioned midfeather.Above-mentioned running system variable-speed shaft, be connected with above-mentioned running system transmission shaft action by above-mentioned running system gear shift, and the input ring gear outputting rotary power in above-mentioned differential gear mechanism is bearing on above-mentioned the 1st end wall and the above-mentioned midfeather with being positioned at above-mentioned running system transmission shaft below.Above-mentioned PTO is an input shaft, can not be connected with the relative rotation around axis on coaxial with the input shaft of above-mentioned HST.Above-mentioned PTO is a clutch shaft, be clutch mechanism with above-mentioned PTO by above-mentioned PTO is that the input shaft action is being connected, be positioned at above-mentioned PTO and be the input shaft below and on vehicle-width direction opposite side ground, be bearing on above-mentioned the 1st end wall and the above-mentioned midfeather.Above-mentioned main PTO transmission shaft is that the clutch shaft action is being connected with above-mentioned PTO, below above-mentioned PTO is clutch shaft and in vehicle-width direction one side's side that this PTO is clutch shaft, extends along the vehicle fore-and-aft direction.Above-mentioned main PTO axle is being connected with the transmission shaft action with above-mentioned main PTO, and its transmission direction downstream end is supporting from above-mentioned the 2nd end wall with reaching foreign side.Above-mentioned service pump transmission shaft is being the state that input shaft action is being connected with above-mentioned PTO, and to be positioned at above-mentioned PTO be ground, clutch shaft top, be bearing on above-mentioned midfeather and above-mentioned the 2nd end wall.Above-mentioned service pump device is bearing on above-mentioned the 2nd end wall, and by above-mentioned service pump transmission shaft drive actions.Above-mentioned main PTO transmission shaft below above-mentioned a pair of differential output shaft, utilizes the space between above-mentioned a pair of drive axle to extend along the vehicle fore-and-aft direction.
Above-mentioned service pump transmission shaft above above-mentioned a pair of differential output shaft, utilizes the space imaginary vertical surface, the vehicle-width direction opposite side of the axis that connects above-mentioned HST output shaft and above-mentioned HST input shaft, extends along the vehicle fore-and-aft direction.
According to this structure, can realize the miniaturization as much as possible of gearbox casing.
In a mode, also having PTO is that gear shift and PTO are variable-speed shaft.Above-mentioned PTO is a gear shift, is housed in above-mentioned the 1st space.Above-mentioned PTO is a variable-speed shaft, is gear shift with above-mentioned PTO by above-mentioned PTO be that the clutch shaft action is being connected, can not be connected with the relative rotation around axis on coaxial with transmission shaft with above-mentioned main PTO and land, be bearing on above-mentioned the 1st end wall and the above-mentioned midfeather.
Preferably, above-mentioned service pump transmission shaft is the driving side parts of clutch mechanism by the above-mentioned PTO that is bearing on the above-mentioned PTO clutch shaft, is that the input shaft action is being connected with above-mentioned PTO.
To achieve these goals, the gearbox of the vehicle that the present invention's the 4th mode provides the power of driving source, passes to the pairing left and right main drive wheel by the running system driving mechanism, and, the power of above-mentioned driving source, be that driving mechanism outputs to the outside by PTO.Above-mentioned running system driving mechanism, the running system gear shift of the planetary gears that includes the HST that is being connected with the action of above-mentioned driving source, imports constant speed power and variable-speed dynamic respectively from pump shaft and the motor drive shaft of above-mentioned HST, the output of the above-mentioned planetary gears of input and be provided in above-mentioned running system gear shift after the differential gear mechanism of level.Above-mentioned PTO is a driving mechanism, and the PTO that includes level behind the pump shaft that is provided in above-mentioned HST is a clutch mechanism.This gearbox has and accommodates above-mentioned planetary gears, above-mentioned running system gear shift, above-mentioned differential gear mechanism and above-mentioned PTO is the gearbox casing of clutch mechanism.Above-mentioned HST is being connected with the 1st end wall of vehicle fore-and-aft direction one side's side of above-mentioned gearbox casing.Above-mentioned planetary gears, above-mentioned running system gear shift and above-mentioned PTO are clutch mechanism, at the fore-and-aft direction of vehicle, between above-mentioned the 1st end wall and above-mentioned differential gear mechanism, be housed in the above-mentioned gearbox casing.
According to this structure, above above-mentioned differential gear mechanism, not setting running system running shaft and PTO is running shaft, above this differential gear mechanism, can guarantee big as far as possible free space.
Therefore, above above-mentioned differential gear mechanism, the brake operating axle, the differential locking service axis that set along vehicle-width direction can be set easily, and realize the miniaturization of gearbox casing above-below direction.
Preferably, above-mentioned gearbox casing, above-mentioned the 1st end wall that has perisporium, extends in the end of vehicle fore-and-aft direction one side's side of this perisporium approximate vertical, the 2nd end wall that extends in the end approximate vertical of vehicle fore-and-aft direction the opposing party side of this perisporium and the midfeather of approximate vertical extension between above-mentioned the 1st end wall and the 2nd end wall.
In this mode, above-mentioned planetary gears, above-mentioned running system gear shift and above-mentioned PTO are clutch mechanism, are housed in the 1st space that is surrounded by above-mentioned the 1st end wall and above-mentioned midfeather; And above-mentioned differential gear mechanism is housed in the 2nd space that is surrounded by above-mentioned midfeather and above-mentioned the 2nd end wall.
In one mode, above-mentioned PTO is that also to have PTO be gear shift to driving mechanism.
Above-mentioned PTO is a gear shift, is housed in above-mentioned the 1st space.
In the above-mentioned variety of way, above-mentioned gearbox casing preferably has section 1 and part 2, and this section 1 has above-mentioned the 1st end wall, and this part 2 has above-mentioned midfeather and above-mentioned the 2nd end wall.
The above-mentioned the 1st and part 2, releasably connecting.
To achieve these goals, the gearbox of the vehicle that the present invention's the 5th mode provides has: HST, gearbox casing, running system gear shift, PTO are that clutch mechanism, differential gear mechanism, PTO are that input shaft, PTO are clutch shaft, main PTO with transmission shaft, main PTO axle.Above-mentioned HST is being connected with the driving source action.Above-mentioned gearbox casing has the 1st end wall, midfeather and the 2nd end wall that extend in an approximate vertical direction that are disposing successively from vehicle fore-and-aft direction one side's side towards the opposing party's side, and above-mentioned the 1st end wall is supporting above-mentioned HST.Above-mentioned running system gear shift and PTO are clutch mechanism, are housed in the 1st space in the above-mentioned gearbox casing inner space, that surrounded by above-mentioned the 1st end wall and above-mentioned midfeather.Above-mentioned differential gear mechanism is housed in the 2nd space in the above-mentioned gearbox casing inner space, that surrounded by above-mentioned midfeather and above-mentioned the 2nd end wall.Above-mentioned PTO is an input shaft, is bearing on above-mentioned the 1st end wall and the above-mentioned midfeather on coaxial with the input shaft of above-mentioned HST.Above-mentioned PTO is a clutch shaft, be clutch mechanism with above-mentioned PTO by above-mentioned PTO is that the input shaft action is being connected, be positioned at above-mentioned PTO and be the input shaft below and on vehicle-width direction opposite side ground, be bearing on above-mentioned the 1st end wall and the above-mentioned midfeather.Above-mentioned main PTO transmission shaft is that the clutch shaft action is being connected with above-mentioned PTO, below above-mentioned PTO is clutch shaft and in vehicle-width direction one side's side that this PTO is clutch shaft, extends along the vehicle fore-and-aft direction.Above-mentioned main PTO axle is being connected with the transmission shaft action with above-mentioned main PTO, and its transmission direction downstream end is supporting from above-mentioned the 2nd end wall with reaching foreign side.
Above-mentioned the 1st end wall and above-mentioned midfeather are below above-mentioned PTO is clutch shaft and at the vehicle-width direction opposite side of above-mentioned main PTO with transmission shaft, selectively supporting PTO is pony axle or secondary PTO axle.Above-mentioned PTO is a pony axle, and switching from above-mentioned PTO is that clutch shaft is to the transmission of power direction of above-mentioned main PTO with transmission shaft.Above-mentioned secondary PTO axle the rotating power of above-mentioned main PTO with transmission shaft, outputs to foreign side from above-mentioned the 1st end wall.
According to this structure, can realize the structural member generalization to greatest extent of gearbox casing etc., and, can easily carry out except from above-mentioned main PTO axle also can from secondary PTO axially outside output specification and switch specification change between the specification of above-mentioned main PTO axle sense of rotation.
Can also have the planetary gears that is housed in above-mentioned the 1st space.
Can also have PTO is that gear shift and PTO are variable-speed shaft.Above-mentioned PTO is that gear shift is housed in above-mentioned the 1st space.Above-mentioned PTO is a variable-speed shaft, be gear shift with above-mentioned PTO by above-mentioned PTO is that the clutch shaft action is connected, and can not be connected with the relative rotation around axis on coaxial with transmission shaft with above-mentioned main PTO to land, be bearing on above-mentioned the 1st end wall and the above-mentioned midfeather.
According to this structure, above-mentioned PTO pony axle that selectively has or above-mentioned secondary PTO axle are clutch shaft with above-mentioned PTO with above-mentioned PTO is that the variable-speed shaft both sides move and are being connected.
In above-mentioned the 1st end wall, selectively support the part that above-mentioned PTO is pony axle or above-mentioned secondary PTO axle, inspection opening preferably is set, this inspection opening is allowed the access to above-mentioned the 1st space from foreign side.
Description of drawings
Fig. 1 is the partial perspective view that adopts the working truck of gearbox one mode of execution of the present invention.
Fig. 2 is the transmission mode figure of working truck shown in Figure 1.
Fig. 3 is the stereogram of the gearbox of an embodiment of the present invention.
Fig. 4 is the front elevation of gearbox shown in Figure 3.
Fig. 5 is the back elevation of Fig. 3 and gearbox shown in Figure 4.
Fig. 6 is the exploded perspective view of the gearbox casing in Fig. 3～gearbox shown in Figure 5.
Fig. 7 is the left surface figure of the driving mechanism in Fig. 3～gearbox shown in Figure 5, dots above-mentioned gearbox casing.
Fig. 8 is the right hand view of the driving mechanism in Fig. 3～gearbox shown in Figure 5, dots above-mentioned gearbox casing.
Fig. 9 is the planimetric map of the driving mechanism in Fig. 3～gearbox shown in Figure 5, dots above-mentioned gearbox casing.
Figure 10 is the stereogram of above-mentioned gearbox, and the state of the cover of gearbox casing has been unloaded in expression.
Figure 11 is the front elevation of above-mentioned gearbox, and the state of the cover of gearbox casing has been unloaded in expression.
Figure 12 is the stereogram of the driving mechanism of above-mentioned gearbox.
Figure 13 is that sectional drawing is launched in the part of above-mentioned gearbox.
Figure 14 is the transmission mode figure of working truck that adopts the mode of texturing of above-mentioned gearbox.
Figure 15 is the hydraulic circuit diagram of above-mentioned working truck.
Embodiment
Below, with reference to the preferred implementation of description of drawings gearbox of the present invention.
Fig. 1 is the partial perspective view of working truck 1 that adopts the gearbox 100 of present embodiment.Fig. 2 represents the transmission mode figure of above-mentioned working truck 1.
As depicted in figs. 1 and 2, above-mentioned working truck 1 has: vehicle frame 10 (see figure 1)s of extending along vehicle lengthwise direction, driving source 20 (see figure 2)s of the vehicle lengthwise direction one distolateral (being the front side in the diagramatic way) that is bearing in this vehicle frame 10 and the above-mentioned gearbox 100 that is bearing in the vehicle lengthwise direction another distolateral (being rear side in the diagramatic way) of vehicle frame 10 in the position of leaving driving source 20 along vehicle lengthwise direction.
Above-mentioned gearbox 100 has: the running system driving mechanism, from the transmission of power of above-mentioned driving source 20 by transmission shaft 25 (see figure 2)s inputs to main drive wheel (being trailing wheel 30 diagramatic way); With the PTO that the power of above-mentioned driving source 20 is outputed to foreign side be driving mechanism.
Specifically, as shown in Figure 2, above-mentioned gearbox 100 has the HST110 that is connected with above-mentioned driving source 20 actions, be provided in the planetary gears 120 in the transmission direction downstream side of above-mentioned HST110, be provided in the running system gear shift 130 in the transmission direction downstream side of above-mentioned planetary gears 120, be provided in the differential gear mechanism 140 in the transmission direction downstream side of above-mentioned running system gear shift 130, the PTO that is provided in the transmission direction downstream side of above-mentioned HST110 is a clutch mechanism 210, the PTO that is provided in above-mentioned PTO and is the transmission direction downstream side of clutch mechanism 210 is a gear shift 220, and be the main PTO axle 540 that gear shift 220 action is connected with above-mentioned PTO.Above-mentioned HST110, above-mentioned planetary gears 120, above-mentioned running system gear shift 130, and above-mentioned differential gear mechanism 140 form above-mentioned running system driving mechanism, and above-mentioned PTO is that clutch mechanism 210 and above-mentioned PTO are that the above-mentioned PTO of gear shift 220 formation is a driving mechanism.
Fig. 3～Fig. 5 represents stereogram, front elevation and the back elevation of above-mentioned gearbox 100 respectively.
As Fig. 3～shown in Figure 5, above-mentioned gearbox 100 except above-mentioned structure, also has supporting or accommodates the gearbox casing 300 of above-mentioned various driving mechanisms.
Specifically, this gearbox casing 300 accommodate above-mentioned planetary gears 120, above-mentioned running system gear shift 130,, above-mentioned differential gear mechanism 140, above-mentioned PTO be that clutch mechanism 210 and above-mentioned PTO are gear shift 220, and, outer surface at distolateral the 1st end wall 301 (being antetheca in the present embodiment) of vehicle lengthwise direction one is supporting above-mentioned HST110.
Fig. 6 represents the exploded perspective view of above-mentioned gearbox casing 300.
Fig. 7～Fig. 9 represents left surface figure, right hand view and the planimetric map of the driving mechanism in the above-mentioned gearbox 100 respectively.Among Fig. 7～Fig. 9, dot above-mentioned gearbox casing 300.
As Fig. 3～shown in Figure 9, above-mentioned gearbox casing 300, above-mentioned the 1st end wall 301 that has perisporium 305, extends in an approximate vertical direction at vehicle fore-and-aft direction one side end of this perisporium 305, at the 2nd end wall 302 that the vehicle fore-and-aft direction end side of above-mentioned perisporium 305 is extended in an approximate vertical direction and the midfeather 303 that between the above-mentioned the 1st and the 2nd end wall 301,302, extends in an approximate vertical direction.
This gearbox casing 300, as Fig. 7～shown in Figure 9, in the 1st space 300a that is limited by above-mentioned the 1st end wall 301 and above-mentioned midfeather 303, accommodating above-mentioned planetary gears 120, above-mentioned running system gear shift 130, above-mentioned PTO is that clutch mechanism 210 and above-mentioned PTO are gear shift 220; And, in the 2nd space 300b that limits by above-mentioned midfeather 303 and above-mentioned the 2nd end wall 302, accommodating above-mentioned differential gear mechanism 140.
In addition, as previously mentioned, above-mentioned HST110 is connected the outer surface (see figure 3) of the 1st end wall 301 of above-mentioned gearbox casing 300.
As shown in Figure 6, above-mentioned gearbox casing 300 preferably has case body 320 and cover 310.Above-mentioned case body 320 has above-mentioned midfeather 303 and above-mentioned the 2nd end wall 302.Cover 310 has above-mentioned the 1st end wall 301, and this cover 310 releasably is connected with above-mentioned case body 320.
Like this, by forming above-mentioned gearbox casing 300, can easily carry out in above-mentioned the 1st space 300a, being provided with the operation of above-mentioned driving mechanism with case body 320 that can connect and cover 310 with being separated from each other.
Figure 10 and Figure 11, stereogram and front elevation above-mentioned cover 310 states, above-mentioned gearbox 100 are unloaded in expression respectively.
Figure 12 has represented to unload stereogram state, above-mentioned gearbox 100 of above-mentioned gearbox casing 300.
Figure 13 represents the part expansion sectional drawing of above-mentioned gearbox 300.
Shown in Fig. 2 and Figure 13 etc., above-mentioned HST110, the output adjusting parts 115 of oil mass are discharged in the supply of motor body 114, the motor drive shaft 113 that can not support this motor body 114 with the relative rotation and change said pump body 112 or the said motor body 114 that has the pump shaft 111 that is being connected with 20 actions of above-mentioned driving source, can not be bearing in pump body 112 on this pump shaft 111 with the relative rotation, links to each other with said pump body 112 fluids by a pair of action oil circuit.Regulate parts 115 by operating above-mentioned output, can make of the rotating speed stepless change of the rotating speed of said motor axle (HST output shaft) 113 with respect to above-mentioned pump shaft 111 (HST input shaft).
As shown in figure 13, this HST110, transmission direction downstream end (being rearward end in the present embodiment) with above-mentioned pump shaft 111 and said motor axle 113 connects above-mentioned the 1st end wall 301, extend into the mode in above-mentioned the 1st space 300a, is bearing on above-mentioned the 1st end wall 301.
In the above-mentioned planetary gears 120, the 1st key element in planet 3 key elements that are made of sun gear 121, planetary carrier 122 and internal gear 123 works as the constant speed input part of the constant speed rotating power of the above-mentioned pump shaft 111 of input; The 2nd key element in above-mentioned planet 3 key elements works as the variable input part of the variable rotating power of input said motor axle 113; The 3rd key element in above-mentioned planet 3 key elements works as the carry-out part with the synthetic back output of the rotating power of above-mentioned constant speed input part and above-mentioned variable input part.
In the present embodiment, as Fig. 2, Figure 11 and shown in Figure 13, above-mentioned planetary gears 120 is disposing with one heart with said motor axle 113.
Sun gear 121 works as the above-mentioned variable input part that is being connected with 113 actions of said motor axle.Planetary carrier 122 works as the above-mentioned constant speed input part that is being connected with above-mentioned pump shaft 111 actions.Internal gear 123 works as above-mentioned carry-out part.
The gear of above-mentioned planetary gears 120 is than preferably being set at: as above-mentioned HST110 during towards the maximum output state of reverse directions, the carry-out part of above-mentioned planetary gears 120 is zero outputs; When above-mentioned HST110 is the zero output state (neutral condition), the carry-out part of above-mentioned planetary gears 120 becomes maximum output state.
Have this structure, can improve the transmission efficiency of HST and lighten the load.
Below, the running system running shaft in the above-mentioned running system driving mechanism is described.
Above-mentioned running system driving mechanism for action between above-mentioned planetary gears 120, above-mentioned running system gear shift 130 and the above-mentioned differential gear mechanism 140 is connected, has several running system running shafts that set along the vehicle fore-and-aft direction.
Specifically, shown in Fig. 2 and Figure 11 etc., above-mentioned running system running shaft includes planet output shaft 410, running system transmission shaft 420 and running system variable-speed shaft 430.Above-mentioned planet output shaft 410 is being connected with carry-out part (being internal gear 123 in the present embodiment) action of above-mentioned planetary gears 120, and disposes coaxially with said motor axle 113.Above-mentioned running system transmission shaft 420 with respect to above-mentioned planet output shaft 410 towards vehicle-width direction one side's side staggered positions.Above-mentioned running system variable-speed shaft 430 is provided in above-mentioned running system transmission shaft 420 belows.
Above-mentioned running system transmission shaft 420 as Fig. 2 and shown in Figure 13, is being connected with above-mentioned planet output shaft 410 actions by train of gearings.
Above-mentioned running system variable-speed shaft 430 is being connected with above-mentioned running system transmission shaft 420 actions by above-mentioned running system gear shift 130.
That is, above-mentioned running system gear shift 130 carries out multi-change speed between above-mentioned running system transmission shaft 420 and above-mentioned running system variable-speed shaft 430.
Above-mentioned running system gear shift 130 preferably can switch the direction of transfer from above-mentioned running system transmission shaft 420 to above-mentioned running system variable-speed shaft 430.
In the present embodiment,,,, also has the running system pony axle 440 being folded in from above-mentioned running system transmission shaft 420 to the drive path of above-mentioned running system variable-speed shaft 430 as above-mentioned running system running shaft for above-mentioned gearbox 100 as Fig. 2 and shown in Figure 13.
Above-mentioned running system pony axle 440, as Figure 10～shown in Figure 12, its upper-lower position is between above-mentioned running system transmission shaft 420 and above-mentioned running system variable-speed shaft 430, and the position of its vehicle-width direction is the vehicle-width direction one side's side that is positioned at above-mentioned running system transmission shaft 420 and above-mentioned running system variable-speed shaft 430.
Above-mentioned running system gear shift 130 has just changes transfer mode and counter-rotating transfer mode.Just changeing transfer mode is, not sailing by above line from above-mentioned running system transmission shaft 420 is that pony axle 440 is to above-mentioned running system variable-speed shaft 430 transferring power.The counter-rotating transfer mode be, from above-mentioned running system transmission shaft 420 by above-mentioned running system pony axle 440 to above-mentioned running system variable-speed shaft 430 transferring power.
In addition, in the present embodiment, above-mentioned running system gear shift 430 as shown in Figure 2, carries out 2 grades of speed changes above-mentioned just the commentaries on classics in the transfer mode.
Above-mentioned running system variable-speed shaft 430 is the input ring gear 141 that passes to above-mentioned differential gear mechanism 140 by above-mentioned running system gear shift 130 speed changes or the rotating power that reversed.
In the present embodiment, as shown in Figure 7, above-mentioned running system variable-speed shaft 430 be adapted to above-mentioned differential gear mechanism 140 in the roughly the same height of a pair of differential output shaft 140, be connected with above-mentioned input ring gear 141 actions from vehicle fore-and-aft direction one side's side.
In the present embodiment, above-mentioned running system driving mechanism, except the rotating power of above-mentioned running system variable-speed shaft 430 to above-mentioned main drive wheel (being trailing wheel 30 in the present embodiment) output, also can export to secondary driving wheel (being front-wheel 40 (see figure 2)s in the present embodiment).
Specifically, in above-mentioned gearbox 100,, also has the secondary running system output shaft 450 that is connected and reaches foreign side with above-mentioned running system variable-speed shaft 430 actions from the 1st end wall 301 as above-mentioned running system running shaft.
In the present embodiment, as shown in Figure 10 and Figure 11, above-mentioned secondary running system output shaft 450 is provided in the below of above-mentioned running system variable-speed shaft 430.
As Fig. 2 and shown in Figure 13, above-mentioned running system driving mechanism preferably has secondary driving wheel speed increasing mechanism 150.
By having this pair driving wheel speed increasing mechanism 150, can make the rotation of front-wheel speedup, poor to remedy the front-wheel and the turning radius between trailing wheel that produce when working truck rotates.
Below, illustrate that above-mentioned PTO is that PTO in the driving mechanism is a running shaft.
Above-mentioned PTO is a driving mechanism, and in order to be the power of above-mentioned driving source 20 that clutch mechanism 210 and above-mentioned PTO are that gear shift 220 outputs to the outside by above-mentioned PTO, having several PTO that set along the vehicle fore-and-aft direction is running shaft.
Specifically, as Fig. 2, shown in Figure 11 and Figure 13 etc., above-mentioned PTO is that running shaft includes: the PTO that can not rotate around axis on coaxial with above-mentioned pump shaft 111 is an input shaft 510, be configured in above-mentioned PTO and be input shaft 510 belows and be clutch shaft 520 at the PTO of vehicle-width direction the opposing party side, the PTO that is configured in above-mentioned PTO and is clutch shaft 520 belows is a variable-speed shaft 530, and be bearing in main PTO axle 540 on the 2nd end wall 302 with the above-mentioned PTO mode that to be the state that is being connected of variable-speed shaft 530 action reach foreign side with the 2nd end wall 302 from above-mentioned gearbox casing 300.
As Fig. 2 and shown in Figure 13, above-mentioned PTO is a clutch shaft 520, is that clutch mechanism 210 is that input shaft 510 actions are being connected with above-mentioned PTO by above-mentioned PTO.
That is, above-mentioned PTO is a clutch mechanism 210, is that input shaft 510 and above-mentioned PTO are between the clutch shaft 520 at above-mentioned PTO, selectively carries out the joint or the disconnection of transmission of power.
Above-mentioned PTO is a variable-speed shaft 530, is that gear shift 220 is that clutch shaft 520 actions are being connected with above-mentioned PTO by above-mentioned PTO.
That is, above-mentioned PTO is a gear shift 220, is that clutch shaft 520 and above-mentioned PTO carry out multi-change speed between the variable-speed shaft 530 at above-mentioned PTO.
Above-mentioned PTO is that gear shift 220 preferred can switchings from above-mentioned PTO are that clutch shaft 520 is the direction of transfer of variable-speed shaft 530 to above-mentioned PTO.
In the present embodiment,, in the above-mentioned gearbox 100, be running shaft, have also that to be folded in from above-mentioned PTO be that clutch shaft 520 is that PTO the bang path of variable-speed shaft 530 is a pony axle 550 to above-mentioned PTO as above-mentioned PTO as Fig. 2 and shown in Figure 13.
Above-mentioned PTO is a pony axle 550, as Figure 10～shown in Figure 12, is configured in above-mentioned PTO and is clutch shaft 520 belows and be vehicle-width direction the opposing party side of variable-speed shaft 530 at above-mentioned PTO.
Above-mentioned PTO be gear shift 220 have just change transfer mode and the counter-rotating transfer mode.The above-mentioned transfer mode that just changeing is, is that clutch shaft 520 is that pony axle 550 is variable-speed shaft 530 transferring power to above-mentioned PTO by above-mentioned PTO from above-mentioned PTO.Above-mentioned counter-rotating transfer mode is, is that clutch shaft 520 is not that pony axle 550 is variable-speed shaft 530 transferring power to above-mentioned PTO by above-mentioned PTO from above-mentioned PTO.
In addition, in the present embodiment, above-mentioned PTO is a gear shift 220, as shown in Figure 2, carries out 2 grades of speed changes in the transfer mode above-mentioned just the commentaries on classics.
Above-mentioned main PTO axle 540 is above-mentioned PTO that the rotating power of variable-speed shaft 530 is exported to the outside.
In the present embodiment, as Fig. 2, Fig. 7, Fig. 8 and shown in Figure 13, at above-mentioned PTO is in the driving mechanism, is running shaft as above-mentioned PTO, and also having with above-mentioned PTO is the concentric main PTO that can not be connected with the relative rotation around axis of variable-speed shaft 530 with transmission shaft 560.
Specifically, as shown in Figure 7 and Figure 8, above-mentioned main PTO, crosses over these differential gear mechanism 140 ground and extends along the vehicle fore-and-aft direction below a pair of differential output shaft 142 in above-mentioned differential gear mechanism 140 with transmission shaft 560.
More particularly, as Fig. 2, Fig. 7 and shown in Figure 8, the gearbox 100 of present embodiment also has a pair of drive axle 160 except above-mentioned structure.This a pair of drive axle 160 is arranged in the below of a pair of differential output shaft 142 of above-mentioned differential gear mechanism 140, is being connected with above-mentioned a pair of differential output shaft 142 actions respectively by train of reduction gears 170.
Above-mentioned main PTO is that variable-speed shaft 530 concentric arrangement with transmission shaft 560 with above-mentioned PTO, thereby utilizes the space of 160 of above-mentioned a pair of drive axle, crosses over above-mentioned differential gear mechanism 140.
In addition, in the present embodiment, above-mentioned main PTO axle 540 is being connected with the transmission direction downstream end of transmission shaft 560 with above-mentioned main PTO by train of gearings.
The gearbox 100 of present embodiment as mentioned above, as the PTO axle of the rotating power of driving source 20 to outside output, has only the above-mentioned main PTO axle 540 that reaches foreign side from above-mentioned the 2nd end wall 302.
But, according to different specifications, be benchmark with above-mentioned gearbox casing 300, also to take out rotating power sometimes from the 1st end wall 301 of above-mentioned the 2nd end wall 302 opposition sides.
For example, in order to be applicable to the working truck that mowing machine is installed in the middle of having, in the time of being provided in vehicle frame 30 rear sides etc. to the gearbox 100 of present embodiment, just must also will be from above-mentioned the 1st end wall 301 outputting rotary powers.
Figure 14 represents to have the transmission mode figure of the vehicle of gearbox 100 ', in the above-mentioned gearbox 100 ', except having the above-mentioned main PTO axle 540 that is located on above-mentioned the 2nd end wall 302, also is provided with secondary PTO axle 570 on above-mentioned the 1st end wall 301.
In addition, in the gearbox 100 ' shown in Figure 14,, removed above-mentioned planetary gears 120, carried out the switching of direction of advance and direction of retreat with above-mentioned HST110 in order to reduce cost.
In this gearbox 100 ', also removed secondary driving wheel speed increasing mechanism 150.
In order easily to carry out the change of specification shown in Figure 2 and the such two kinds of specifications of specification shown in Figure 14, the gearbox 100 of present embodiment has following structure.
That is, it is pony axle 550 (see figure 2)s that above-mentioned gearbox casing 300 does not support PTO, and supporting and above-mentioned PTO are the secondary PTO axle 570 (seeing Figure 14) under the variable-speed shaft 530 action coupled condition.
Promptly, in the gearbox 100 of present embodiment, can be selectively be that the PTO of the part of gear shift 220 is pony axle 550 or is the secondary PTO axle 570 that variable-speed shaft 530 actions are being connected with above-mentioned PTO constituting above-mentioned PTO, be installed on the above-mentioned gearbox casing 300.
As Fig. 6 and shown in Figure 13, in above-mentioned the 1st end wall 301, the above-mentioned PTO of supporting is the part of pony axle 550 or above-mentioned secondary PTO axle 570, and inspection opening 305 preferably is set, this inspection opening 305 is allowed from foreign side and is entered above-mentioned the 1st space 300a.
Make this structure, when above-mentioned PTO being installed being pony axle 550, with the block 306 (seeing Fig. 4 and Figure 13) with above-mentioned inspection opening 305 obturations, when above-mentioned secondary PTO axle 570 is installed, as long as take off above-mentioned block 306, needn't implement to append processing to above-mentioned gearbox casing 300 and just can carry out the specification change.
Have in the mode of above-mentioned secondary PTO axle 570, as shown in figure 14, secondary PTO axle clutch mechanism 230 is set on this secondary PTO axle 570 preferably.
By this secondary PTO axle being set with clutch mechanism 230, be clutch mechanism 210 PTO axles 540 that carry out, main and the whole output state of secondary PTO axle 570 or the switching of non-output state except realizing above-mentioned PTO, also can realize the output state of only main PTO axle 540.
The gearbox 100 of present embodiment except above-mentioned structure, also has and can discharge the service pump device 600 of pressing oil and be the transmission of power of above-mentioned driving source 20 driving mechanism to the service pump of this service pump device 600.
Above-mentioned service pump device shown in Fig. 2, Fig. 5, Fig. 7 and Fig. 8 etc., is bearing in the 2nd end wall 302 outer surfaces of above-mentioned gearbox casing 300.
Above-mentioned service pump is a driving mechanism, and shown in Fig. 2 and Fig. 8 etc., having above-mentioned PTO is the rotating power of input shaft 510 service pump that is delivered to above-mentioned service pump device 600 with transmission shaft 650.
In the present embodiment, above-mentioned service pump is with transmission shaft 650, as shown in Figure 2, is that PTO on the clutch shaft 520 is the driving side parts of clutch mechanism 210 by being bearing in above-mentioned PTO, is that output shaft 510 actions are being connected with above-mentioned PTO.
In the present embodiment, this service pump is with transmission shaft 650, and as shown in figure 11, at the vehicle-width direction opposite side of the imaginary vertical surface of the axis by above-mentioned pump shaft 111 and said motor axle 113, and to be positioned at above-mentioned PTO be clutch shaft 520 tops.Like this, avoid the position of above-mentioned differential gear mechanism 140 and utilize space above the above-mentioned a pair of differential output shaft 142 at the vehicle-width direction opposite side, in above-mentioned the 2nd space 300b, extend along the vehicle fore-and-aft direction, can be to above-mentioned service pump device 600 transferring power.
Figure 15 represents the hydraulic circuit diagram in the above-mentioned working truck.
As shown in figure 15, the pressure oil of above-mentioned service pump device 600, by diverter valve 630, supplying to the servosteering mechanism that is being connected in series respectively is that clutch mechanism is supplied with the oil hydraulic circuit of using oil hydraulic circuit 740 with the oil hydraulic circuit of oil hydraulic circuit 720 and pair working machine level of the establishing control that is being connected in series with oil hydraulic circuit 730 and hydraulic elevating system with oil hydraulic circuit 710 and HST with oil hydraulic circuit 700, above-mentioned PTO.
Mark 750 among Figure 15 is that outside the taking-up used oil hydraulic circuit.
In the gearbox 100 of present embodiment, as shown in figure 15, above-mentioned gearbox casing 300 uses as the oil sources of above-mentioned service pump device 600.
That is, above-mentioned gearbox casing 300 can oil storage, like this, does not need other fuel tank maybe can realize miniaturization.
Specifically, above-mentioned service pump device 600 is by the oil storage in the above-mentioned gearbox casing 300 of suction filter 620 attractions.
As shown in Figure 4, above-mentioned suction filter 620 preferably is connected with above-mentioned the 1st end wall 301, position at vehicle-width direction is, from the plane, at least a portion and above-mentioned HST110 are positioned at above-mentioned secondary running system output shaft 450 overlappingly and above-mentioned PTO is between the pony axle 550 (or above-mentioned secondary PTO axle 570), and, the position of its above-below direction is, see that from the side at least a portion and above-mentioned secondary running system output shaft 450 and above-mentioned PTO are the lower position that pony axle 550 (perhaps secondary PTO axle 570) is positioned at above-mentioned HST110 overlappingly.
Make this structure, can be efficiently the above-mentioned HST110 that reaches foreign side from the 1st end wall 301 of above-mentioned gearbox casing 300, above-mentioned suction filter 620 and above-mentioned secondary running system output shaft 450 (and above-mentioned secondary PTO axle 570) configured separate, therefore, do not cause the maximization of gearbox casing 300, can prevent the interference of transmission shaft that is being connected with pump shaft 111 and above-mentioned secondary running system output shaft 450 (and the above-mentioned secondary PTO axle 570) action of above-mentioned HST110 respectively and the pipe arrangement that is connected with above-mentioned suction filter 620 effectively.
The above-mentioned gearbox 100 of this structure except above-mentioned various effects, also has following effect.
Promptly, in the above-mentioned gearbox 100, above-mentioned planetary gears 120, above-mentioned running system gear shift 130, above-mentioned PTO are that clutch mechanism 210 and above-mentioned PTO are gear shift 220, be provided between above-mentioned the 1st end wall 301 and the above-mentioned differential gear mechanism 140 at the vehicle fore-and-aft direction, thereby above this differential gear mechanism 140, can guarantee big as far as possible free space.
Therefore, brake operating axle and the differential locking service axis that sets along vehicle-width direction can more freely be set.
In addition, according to this structure, can make above-mentioned gearbox casing 300 in the above-below direction miniaturization, therefore, driver's seat 50 (see figure 1)s that are arranged on these gearbox casing 300 tops are low apart from the height on ground, can make things convenient for boarding.
In addition, in the gearbox 100 of present embodiment, shown in Figure 11 waits, above-mentioned running system running shaft all disposes or is configured in the vehicle-width direction one side's side and the below of this motor drive shaft 113 with one heart with said motor axle 113, above-mentioned PTO is running shaft all disposed or be configured in this pump shaft 111 with one heart with pump shaft 111 below.
Therefore, can be being that the PTO that running shaft supports is a driving mechanism by the running system driving mechanism of above-mentioned running system running shaft supporting with by above-mentioned PTO, easily intensive configuration respectively like this, can realize the miniaturization of gearbox casing 300.
In addition, in the present embodiment, be being that to have PTO in the drive path be that the example that is configured to of gear shift describes at above-mentioned PTO, still, also can remove this PTO is gear shift.
When not wanting above-mentioned PTO and being gear shift, above-mentioned PTO is that variable-speed shaft is also got rid of, and above-mentioned main PTO axle is that the clutch shaft action is being connected with transmission shaft with above-mentioned PTO.
Therefore, in this structure, when having above-mentioned secondary PTO axle, this secondary PTO axle moves with transmission shaft with above-mentioned main PTO axle and is being connected.

Claims (14)

1. the gearbox of a vehicle includes and the power of driving source passed to the running system drive path of pairing left and right main drive wheel by HST, running system gear shift and differential gear mechanism and is the power of above-mentioned driving source that to output to outside PTO be drive path to clutch mechanism by PTO; It is characterized in that,
Having and accommodating above-mentioned running system gear shift, above-mentioned differential gear mechanism and above-mentioned PTO is clutch mechanism and the gearbox casing that supports above-mentioned HST;
Above-mentioned HST, the state above the HST output shaft is positioned at the HST input shaft is being connected with the 1st end wall of vehicle fore-and-aft direction one side of above-mentioned gearbox casing;
Several running system running shafts that setting along the vehicle fore-and-aft direction, promptly form several running system running shafts of above-mentioned running system drive path, vehicle-width direction one side and the below that dispose or be configured in this HST output shaft with one heart with above-mentioned HST output shaft;
Several PTO that several PTO that setting along the vehicle fore-and-aft direction are running shaft, promptly to form above-mentioned PTO be drive path are running shaft, the below that disposes or be configured in this HST input shaft with one heart with above-mentioned HST input shaft.
2. the gearbox of vehicle as claimed in claim 1 is characterized in that,
Also have and be housed in the above-mentioned gearbox casing, be provided in planetary gears between above-mentioned HST and the above-mentioned running system gear shift in the mode of the part that constitutes above-mentioned running system drive path;
Above-mentioned running system running shaft includes planet output shaft, running system transmission shaft and running system variable-speed shaft;
Above-mentioned planet output shaft is being connected with the carry-out part action of above-mentioned planetary gears that the rotating power of above-mentioned HST output shaft and above-mentioned HST input shaft is synthetic, is disposing coaxially with above-mentioned HST output shaft;
Above-mentioned running system transmission shaft with respect to above-mentioned planet output shaft towards vehicle-width direction one side displacement;
Above-mentioned running system variable-speed shaft, is connected and input ring gear transmitting rotary power in above-mentioned differential gear mechanism by above-mentioned running system gear shift and the action of above-mentioned running system transmission shaft, is configured in below the above-mentioned running system transmission shaft to be arranged in mode with the roughly the same height of a pair of differential output shaft of this differential gear mechanism;
Above-mentioned PTO is that to include PTO be that input shaft, PTO are clutch shaft, main PTO with transmission shaft and main PTO axle to running shaft;
Above-mentioned PTO be input shaft with above-mentioned HST input shaft on coaxial, can not rotate around axis;
Above-mentioned PTO is that clutch shaft is that clutch mechanism is that the input shaft action is being connected with above-mentioned PTO by above-mentioned PTO, and being configured in above-mentioned PTO is input shaft below and vehicle-width direction opposite side;
Above-mentioned main PTO is that the clutch shaft action is being connected with transmission shaft and above-mentioned PTO, is configured in above-mentioned PTO and is the clutch shaft below and be vehicle-width direction one side of clutch shaft at this PTO;
Above-mentioned main PTO axle and above-mentioned main PTO are being connected with the transmission shaft action, from above-mentioned gearbox casing, with the 2nd end wall of the 1st end wall opposition side on the vehicle fore-and-aft direction, be bearing on the 2nd end wall with stretching out foreign side;
Above-mentioned main PTO extends along the vehicle fore-and-aft direction below above-mentioned a pair of differential output shaft with transmission shaft.
3. the gearbox of vehicle as claimed in claim 1 is characterized in that,
Have also that to be housed in the above-mentioned gearbox casing and to be provided in the planetary gears between above-mentioned HST and the above-mentioned running system gear shift and to be housed in the above-mentioned gearbox casing and to constitute above-mentioned PTO in the mode of the part that constitutes above-mentioned running system drive path be that the PTO of the part of drive path is a gear shift;
Above-mentioned running system running shaft includes planet output shaft, running system transmission shaft and running system variable-speed shaft;
Above-mentioned planet output shaft is being connected with the carry-out part action of above-mentioned planetary gears that the rotating power of above-mentioned HST output shaft and above-mentioned HST input shaft is synthetic, is disposing coaxially with above-mentioned HST output shaft;
Above-mentioned running system transmission shaft with respect to above-mentioned planet output shaft towards vehicle-width direction one side displacement;
Above-mentioned running system variable-speed shaft, is connected and rotating power is delivered to input ring gear in the above-mentioned differential gear mechanism by above-mentioned running system gear shift and the action of above-mentioned running system transmission shaft, be configured in below the above-mentioned running system transmission shaft to be arranged in mode with the roughly the same height of a pair of differential output shaft of this differential gear mechanism;
Above-mentioned PTO is that to include PTO be that input shaft, PTO are that clutch shaft, PTO are variable-speed shaft and main PTO axle to running shaft;
Above-mentioned PTO be input shaft with above-mentioned HST input shaft on coaxial, can not rotate around axis;
Above-mentioned PTO is that clutch shaft is that clutch mechanism is that the input shaft action is being connected with above-mentioned PTO by above-mentioned PTO, and being configured in above-mentioned PTO is input shaft below and vehicle-width direction opposite side;
Above-mentioned PTO is a variable-speed shaft, be gear shift with above-mentioned PTO by above-mentioned PTO is that the clutch shaft action is being connected, and is configured in above-mentioned PTO and is the clutch shaft below and be vehicle-width direction one side of clutch shaft at this PTO;
Above-mentioned main PTO axle and above-mentioned PTO are that the variable-speed shaft action is being connected, from above-mentioned gearbox casing, with the 2nd end wall of the 1st end wall opposition side on the vehicle fore-and-aft direction, be bearing on the 2nd end wall with stretching out foreign side;
Above-mentioned PTO is the below that variable-speed shaft is configured in a pair of differential output shaft in the above-mentioned differential gear mechanism;
Above-mentioned main PTO axle is that the variable-speed shaft action is being connected by main PTO with transmission shaft and above-mentioned PTO, and to be variable-speed shaft on coaxial with transmission shaft and above-mentioned PTO can not be connected with the relative rotation and pass below the above-mentioned a pair of differential output shaft this main PTO around axis.
4. the gearbox of vehicle as claimed in claim 3 is characterized in that,
Above-mentioned running system running shaft has secondary running system output shaft, and this pair running system output shaft is connected with above-mentioned running system variable-speed shaft action, and is provided in the below of this running system variable-speed shaft, reaches foreign side from above-mentioned the 1st end wall;
Above-mentioned PTO be running shaft to have PTO be pony axle, this PTO be pony axle with above-mentioned PTO be clutch shaft and above-mentioned PTO be the variable-speed shaft both sides move ways of connecting, to be provided in this PTO be the clutch shaft below and be the vehicle-width direction opposite side of variable-speed shaft at this PTO;
Above-mentioned secondary running system output shaft among above-mentioned running system running shaft, is positioned at below.
5. the gearbox of vehicle as claimed in claim 3 is characterized in that,
Above-mentioned running system running shaft has secondary running system output shaft, and this pair running system output shaft is being connected with above-mentioned running system variable-speed shaft action, and is provided in the below of this running system variable-speed shaft, reaches foreign side from above-mentioned the 1st end wall;
Above-mentioned PTO is that running shaft has secondary PTO axle, and this secondary PTO axle is that the vehicle-width direction opposite side of variable-speed shaft is that the variable-speed shaft action is being connected with this PTO at above-mentioned PTO, reaches foreign side from above-mentioned the 1st end wall;
Above-mentioned secondary running system output shaft among above-mentioned running system running shaft, is positioned at below;
Above-mentioned secondary PTO axle among above-mentioned PTO is running shaft, is positioned at below.
6. the gearbox of a vehicle is connecting HST and suction filter on the 1st end wall of gearbox casing, and secondary running system output shaft and secondary PTO axle stretch out from the 1st end wall, it is characterized in that,
Above-mentioned suction filter is being connected with above-mentioned the 1st end wall, the position of its vehicle-width direction is, from the plane, at least a portion and above-mentioned HST are overlappingly between above-mentioned secondary running system output shaft and above-mentioned secondary PTO axle, and, its above-below direction position is to see that from the side at least a portion and above-mentioned secondary running system output shaft and above-mentioned secondary PTO axle are positioned at the lower position of above-mentioned HST overlappingly.
7. the gearbox of a vehicle includes and the power of driving source passed to the running system drive path of pairing left and right main drive wheel by HST, planetary gears, running system gear shift and differential gear mechanism and is the power of above-mentioned driving source that to output to outside PTO be drive path to clutch mechanism by PTO; But above-mentioned planetary gears, above-mentioned running system gear shift, above-mentioned differential gear mechanism and above-mentioned PTO are clutch mechanism to be housed in the gearbox casing of oil storage; Above-mentioned HST is connected with the 1st end wall outer surface of vehicle fore-and-aft direction one side of above-mentioned gearbox casing; And this gearbox can take out oil storage in the above-mentioned gearbox casing by suction filter; It is characterized in that,
Form above-mentioned running system drive path, include planet output shaft, running system transmission shaft, running system variable-speed shaft and secondary running system output shaft along the running system running shaft of vehicle fore-and-aft direction;
Above-mentioned planet output shaft is being connected with the carry-out part action of the above-mentioned planetary gears that the rotating power of above-mentioned HST output shaft and above-mentioned HST input shaft is synthesized, and disposes coaxially with above-mentioned HST output shaft;
Above-mentioned running system transmission shaft with respect to above-mentioned planet output shaft towards vehicle-width direction one side displacement;
Above-mentioned running system variable-speed shaft is provided in above-mentioned running system transmission shaft below, and the input ring gear that is delivered to from the rotating power of above-mentioned running system transmission shaft after by above-mentioned running system gear shift speed change the above-mentioned differential gear mechanism;
Above-mentioned secondary running system output shaft is provided in above-mentioned running system variable-speed shaft below, and, be connected with this running system variable-speed shaft action, reach foreign side from above-mentioned the 1st end wall;
Form above-mentioned PTO and be drive path, be that to include PTO be that input shaft, PTO are clutch shaft, main PTO with transmission shaft, main PTO axle and secondary PTO axle to running shaft along the PTO of vehicle fore-and-aft direction;
Above-mentioned PTO is that input shaft and above-mentioned HST input shaft dispose coaxially, and this HST input shaft rotates around axis relatively;
Above-mentioned PTO is a clutch shaft, is that clutch mechanism is that the input shaft action is being connected with above-mentioned PTO by above-mentioned PTO, is configured in below and vehicle-width direction opposite side that above-mentioned PTO is an input shaft;
Above-mentioned main PTO is that the clutch shaft action is being connected with transmission shaft with above-mentioned PTO, and being configured in above-mentioned PTO is the clutch shaft below;
Above-mentioned main PTO axle and above-mentioned main PTO are being connected with the transmission shaft action, from above-mentioned gearbox casing, with the 2nd end wall of the 1st end wall opposition side on the vehicle fore-and-aft direction, be bearing on the 2nd end wall with stretching out foreign side;
Above-mentioned secondary PTO axle is being connected with the transmission shaft action with above-mentioned main PTO, reaches foreign side from above-mentioned the 1st end wall;
Above-mentioned suction filter is being connected with above-mentioned the 1st end wall, the position of its vehicle-width direction is, from the plane, at least a portion and above-mentioned HST are overlappingly between above-mentioned secondary running system output shaft and above-mentioned secondary PTO axle, and, the position of its above-below direction is to see that from the side at least a portion and above-mentioned secondary running system output shaft and above-mentioned secondary PTO axle are positioned at above-mentioned HST lower position overlappingly.
8. the gearbox of vehicle as claimed in claim 7 is characterized in that, also having and being housed in the PTO that above-mentioned gearbox casing is interior, the above-mentioned PTO of formation is the part of drive path is gear shift;
Above-mentioned PTO is that also to comprise PTO be variable-speed shaft to running shaft, this PTO is that variable-speed shaft is the rotating power that is clutch shaft that gear shift is delivered to above-mentioned main PTO transmission shaft from above-mentioned PTO by above-mentioned PTO, and disposes coaxially with transmission shaft with above-mentioned main PTO;
Above-mentioned secondary PTO axle is that the variable-speed shaft action is being connected with above-mentioned PTO.
9. as the gearbox of claim 7 or 8 described vehicles, it is characterized in that, above-mentioned HST, the state above the HST output shaft is positioned at the HST input shaft is being connected with the 1st end wall of above-mentioned gearbox casing.
10. as the gearbox of each described vehicle in the claim 7 to 9, it is characterized in that, also have the service pump device, this service pump device attracts oil storage in the above-mentioned gearbox casing by above-mentioned suction filter, with the 2nd end wall of the vehicle-width direction opposition side of above-mentioned the 1st end wall in, be connected with above-mentioned gearbox casing, and, by being that the service pump that input shaft action is being connected is driven in rotation with transmission shaft with above-mentioned PTO;
Above-mentioned service pump is benchmark with transmission shaft and above-mentioned main PTO transmission shaft with a pair of differential output shaft in the above-mentioned differential gear mechanism, is disposing dividually up and down.
11. the gearbox of a vehicle, running system gear shift, differential gear mechanism, and PTO be that clutch mechanism is housed in the gearbox casing, on the 2nd end wall of the 1st end wall of vehicle fore-and-aft direction one side of this gearbox casing and opposite side, connecting HST and service pump device respectively, and main PTO axle reaches foreign side from above-mentioned the 2nd end wall; It is characterized in that,
The a pair of differential output shaft of above-mentioned differential gear mechanism is being connected with a pair of drive axle action that is configured in this a pair of differential output shaft below by train of reduction gears;
To the main PTO transmission shaft of above-mentioned main PTO axle transferring power, below above-mentioned a pair of differential output shaft, utilize the space between above-mentioned a pair of drive axle to extend along the vehicle fore-and-aft direction;
To the service pump transmission shaft of above-mentioned service pump device transferring power, above above-mentioned a pair of differential output shaft, extend along the vehicle fore-and-aft direction.
12. the gearbox of a vehicle, it is characterized in that, have: HST, gearbox casing, planetary gears, running system gear shift, PTO are that clutch mechanism, differential gear mechanism, a pair of drive axle, planet output shaft, running system transmission shaft, running system variable-speed shaft, PTO are that input shaft, PTO are clutch shaft, main PTO with transmission shaft, main PTO axle, service pump with transmission shaft, service pump device;
Above-mentioned HST has HST input shaft and HST output shaft;
Above-mentioned gearbox casing has the 1st end wall, midfeather and the 2nd end wall that extend in an approximate vertical direction that is disposing successively from vehicle fore-and-aft direction one side towards opposite side, is connecting above-mentioned HST at the outer surface of above-mentioned the 1st end wall;
Above-mentioned planetary gears, running system gear shift and PTO are clutch mechanism, are housed in the 1st space in the above-mentioned gearbox casing inner space, that limited by above-mentioned the 1st end wall and above-mentioned midfeather;
Above-mentioned differential gear mechanism is housed in the 2nd space in the above-mentioned gearbox casing inner space, that limited by above-mentioned midfeather and above-mentioned the 2nd end wall;
Above-mentioned a pair of drive axle in the mode below a pair of differential output shaft that is arranged in above-mentioned differential gear mechanism, is being connected with this a pair of differential output shaft action respectively by train of reduction gears;
Above-mentioned planet output shaft is being connected with the carry-out part action of the above-mentioned planetary gears that the rotating power of above-mentioned HST output shaft and above-mentioned HST input shaft is synthesized, and is bearing in coaxially on the above-mentioned midfeather with above-mentioned HST output shaft;
Above-mentioned running system transmission shaft is bearing on above-mentioned the 1st end wall and the above-mentioned midfeather in the mode of vehicle-width direction one side that is positioned at above-mentioned planet output shaft;
Above-mentioned running system variable-speed shaft, be connected and input ring gear outputting rotary power in above-mentioned differential gear mechanism by above-mentioned running system gear shift and the action of above-mentioned running system transmission shaft, and, be bearing on above-mentioned the 1st end wall and the above-mentioned midfeather in the mode that is positioned at above-mentioned running system transmission shaft below;
Above-mentioned PTO is that input shaft can not be connected around axis on coaxial with the relative rotation with the input shaft of above-mentioned HST;
Above-mentioned PTO is a clutch shaft by above-mentioned PTO is that clutch mechanism is that the input shaft action is being connected with above-mentioned PTO, is bearing on above-mentioned the 1st end wall and the above-mentioned midfeather to be positioned at the below that above-mentioned PTO is an input shaft and the mode of vehicle-width direction opposite side;
Above-mentioned main PTO is that the clutch shaft action is being connected with transmission shaft with above-mentioned PTO, below above-mentioned PTO is clutch shaft and in vehicle-width direction one side that this PTO is clutch shaft, extends along the vehicle fore-and-aft direction;
Above-mentioned main PTO axle is being connected with the transmission shaft action with above-mentioned main PTO, and its transmission direction downstream end is supporting from above-mentioned the 2nd end wall with reaching foreign side;
Above-mentioned service pump transmission shaft, be the state that is being connected of input shaft action with above-mentioned PTO, be positioned at above-mentioned PTO be above the clutch shaft, be bearing on above-mentioned midfeather and above-mentioned the 2nd end wall;
Above-mentioned service pump device is bearing on above-mentioned the 2nd end wall, and by above-mentioned service pump transmission shaft drive actions;
Above-mentioned main PTO transmission shaft below above-mentioned a pair of differential output shaft, utilizes the space between above-mentioned a pair of drive axle to extend along the vehicle fore-and-aft direction;
Above-mentioned service pump transmission shaft, above above-mentioned a pair of differential output shaft, extend along the vehicle fore-and-aft direction in the space of the vehicle-width direction opposite side of the imaginary vertical surface of the axis of utilization above-mentioned HST output shaft of connection and above-mentioned HST input shaft.
13. the gearbox of vehicle as claimed in claim 12 is characterized in that, also having PTO is that gear shift and PTO are variable-speed shaft;
Above-mentioned PTO is that gear shift is housed in above-mentioned the 1st space;
Above-mentioned PTO is a variable-speed shaft by above-mentioned PTO is that gear shift is that the clutch shaft action is being connected with above-mentioned PTO, with above-mentioned main PTO with transmission shaft on coaxial can not around axis with the relative rotation ways of connecting be bearing on above-mentioned the 1st end wall and the above-mentioned midfeather.
14. the gearbox as claim 12 or 13 described vehicles is characterized in that, above-mentioned service pump transmission shaft is the driving side parts of clutch mechanism by the above-mentioned PTO that is bearing on the above-mentioned PTO clutch shaft, is that the input shaft action is being connected with above-mentioned PTO.
CN200680026119XA 2005-07-19 2006-07-18 Transmission Expired - Fee Related CN101223385B (en)

Applications Claiming Priority (11)

Application Number Priority Date Filing Date Title
JP2005208881A JP2007024225A (en) 2005-07-19 2005-07-19 Transmission
JP208879/2005 2005-07-19
JP208881/2005 2005-07-19
JP208882/2005 2005-07-19
JP208880/2005 2005-07-19
JP2005208882A JP2007024226A (en) 2005-07-19 2005-07-19 Transmission
JP2005208879A JP2007024223A (en) 2005-07-19 2005-07-19 Transmission
JP208878/2005 2005-07-19
JP2005208880A JP2007024224A (en) 2005-07-19 2005-07-19 Transmission
JP2005208878A JP2007024222A (en) 2005-07-19 2005-07-19 Transmission
PCT/JP2006/314141 WO2007010883A1 (en) 2005-07-19 2006-07-18 Transmission

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CN101223385B CN101223385B (en) 2012-05-09

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002243018A (en) * 2001-02-14 2002-08-28 Sauer-Danfoss-Daikin Ltd Hydromechanical transmission and vehicle mounted with this transmission
JP4753337B2 (en) * 2001-09-13 2011-08-24 ヤンマー株式会社 Work vehicle
JP4276400B2 (en) * 2002-01-17 2009-06-10 ヤンマー農機株式会社 Rice transplanter
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