CN203948609U - Transfer case and articulated truck for engineering vehicle - Google Patents
Transfer case and articulated truck for engineering vehicle Download PDFInfo
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- CN203948609U CN203948609U CN201420252446.9U CN201420252446U CN203948609U CN 203948609 U CN203948609 U CN 203948609U CN 201420252446 U CN201420252446 U CN 201420252446U CN 203948609 U CN203948609 U CN 203948609U
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Abstract
The utility model discloses a kind of transfer case for engineering vehicle and articulated truck, relate to technical field of engineering machinery.Solve prior art and had the technical problem that processing and assembling difficulty is larger.Should comprise casing, power input shaft, propons output shaft, back axle output shaft and differential gear for the transfer case of engineering vehicle, differential gear is arranged between power input shaft, propons output shaft and back axle output shaft three, and power input shaft drives propons output shaft and the back axle output shaft can again can be with identical rotational speed with different rotational speed with respect to casing by differential gear; The rotation axis of propons output shaft overlaps with the rotation axis of back axle output shaft.This articulated truck comprises the transfer case for engineering vehicle that motor, propons driving wheel, rear bridge driven wheel and the utility model provide.The utility model, for reducing the difficulty of processing and assembling, improves the performance of passing through of engineering vehicle.
Description
Technical field
The utility model relates to technical field of engineering machinery, relates in particular to a kind of transfer case for engineering vehicle and this is set for the articulated truck of the transfer case of engineering vehicle.
Background technique
A traction adhesion property of entirely driving is better, thereby is applicable to complex road surface.In prior art, for the power distribution of entirely driving vehicle gear box output is arrived to each ransaxle, after gearbox, all need to arrange transfer case.
Conventionally, three bridges drive articulated truck mostly to be 6 * 6 and drive, and its transfer case only has full-time differential and differential latch functions, does not consider the switching between 6 * 6 and 6 * 4.
The applicant finds: existing three bridges drive in articulated truck, have following characteristics:
1, use crossed-axis differential, mainly have following defect: 1. with respect to planetary wheel differential mechanism complex structure, machining, assembling all bother; 2. divide and turn round than being 1:1, be usually used in two bridge 4*4 drivings, and planetary wheel differential mechanism can pass through the proportioning number of teeth, before and after realizing, minute turn round than difference.
2, transfer case is single-stage, only has a gear, and without dividing of high and low shift, slewing range is little, the bad adaptability to road conditions;
3, due to propons output shaft, both disalignments of back axle output shaft, and both are not in same level, so use ground Clearance of articulator of this transfer case little.
In prior art, also there is a kind of transfer case of articulated vehicle dividing that has high and low shift, but this transfer case of articulated vehicle front output shaft, rear output shaft disalignment, for realizing front output shaft, both connections of rear output shaft, differential function, driving mechanism complex structure between front output shaft and rear output shaft, processing and assembling difficulty is large, is difficult for realizing.
To sum up, the applicant finds: prior art at least exists following technical problem:
Front output shaft, rear output shaft disalignment due to transfer case in prior art, cause prior art to have the technical problem that processing and assembling difficulty is larger.In addition, when the front output shaft of transfer case, rear output shaft disalignment, use ground Clearance of articulator of this transfer case less, articulator passes through poor-performing.
Model utility content
One of them object of the present utility model is propose a kind of transfer case for engineering vehicle and this be set for the articulated truck of the transfer case of engineering vehicle, has solved prior art and has had the technical problem that processing and assembling difficulty is larger.Many technique effects that the utility model optimal technical scheme can produce refer to below sets forth.
For achieving the above object, the utility model provides following technological scheme:
The transfer case for engineering vehicle that the utility model embodiment provides, comprises casing, power input shaft, propons output shaft, back axle output shaft and differential gear, wherein:
Described power input shaft, described propons output shaft and described back axle output shaft are all flexibly connected with described casing separately;
Described differential gear is arranged between described power input shaft, described propons output shaft and described back axle output shaft three, and described power input shaft drives described propons output shaft and described back axle output shaft by described differential gear, and both can again can be with identical rotational speed with different rotational speed with respect to described casing;
The rotation axis of described propons output shaft overlaps with the rotation axis of described back axle output shaft.
At one, alternatively in embodiment, described differential gear comprises power transmission mechanism and differential mechanism, and described differential mechanism comprises planet carrier, planet wheel and sun gear output shaft, wherein:
Described planet carrier is flexibly connected with described casing, and described planet carrier is connected with described power input shaft by power transmission mechanism, and described power input shaft can drive described planet carrier around the pivot axis of described planet carrier by described power transmission mechanism;
Described planet wheel is flexibly connected with described planet carrier, and one end that described back axle output shaft is positioned at described casing is fixedly connected with back axle gear ring or both are integral type structure;
The gear teeth that deviate from the rotation axis of described planet carrier in the gear teeth of described planet wheel are meshed with the internal tooth of described back axle gear ring, and the gear teeth of rotation axis and the external tooth of described sun gear output shaft that in the gear teeth of described planet wheel, approach described planet carrier are meshed;
Described sun gear output shaft and described propons output shaft are provided with separately attached parts between the two, described separately attached parts is when full-time differential link position, described sun gear output shaft is connected with described propons output shaft, and described sun gear output shaft can drive described propons output shaft rotation; Described separately attached parts is when propons off position, and described sun gear output shaft and described propons output shaft are separated.
At one, alternatively in embodiment, the number of described planet wheel is at least two, and described in each, planet wheel is all formed and is rotatably connected by the rotating shaft that is fixedly connected with described planet carrier and described planet carrier.
At one alternatively in embodiment, a wherein part for described planet carrier is extended described casing, described separately attached parts is arranged on described sun gear output shaft, described propons output shaft and described planet carrier and extends between the part three of described casing, and described separately attached parts is when differential locking link position, the part three that described sun gear output shaft, described propons output shaft and described planet carrier extend described casing be connected and three wherein arbitrary energy by described separately attached parts, drive in three other both rotate.
At one, alternatively in embodiment, described separately attached parts is propons combined cover, and the part that described planet carrier extends described casing is provided with engaging piece, wherein:
Described separately attached parts is when full-time differential link position, and the external tooth of described sun gear output shaft is all meshed with the internal tooth of described propons combined cover with the external tooth of described propons output shaft; Described separately attached parts is when propons off position, and the external tooth of described propons output shaft is meshed with the internal tooth of described propons combined cover, and the internal tooth of the external tooth of described sun gear output shaft and described propons combined cover is separated; Described separately attached parts is when differential lockup state, and the engaging piece of described planet carrier, the external tooth of described sun gear output shaft are all meshed with the internal tooth of described propons combined cover with the external tooth three of described propons output shaft.
At one, alternatively in embodiment, described engaging piece is free-sliding spline.
At one, alternatively in embodiment, described power transmission mechanism comprises input shaft free-sliding spline, low-grade change gear, high-grade change gear, gear shift combined cover, jack shaft, the low-grade gear of jack shaft and the high-grade gear of jack shaft, wherein:
Described input shaft free-sliding spline is fixedly connected with described power input shaft;
Described low-grade change gear is all flexibly connected with described power input shaft separately with described high-grade change gear, and described low-grade change gear is installed with low-grade driving gear, and described high-grade change gear is installed with high-grade driving gear;
The internal tooth of described gear shift combined cover is meshed with described input shaft free-sliding spline, and described gear shift combined cover can slide into the position that the internal tooth of described gear shift combined cover and the gear teeth of described low-grade driving gear and described input shaft free-sliding spline are meshed simultaneously, described gear shift combined cover can also slide into the internal tooth that makes described gear shift combined cover with described in state the gear teeth of high-grade driving gear and the position that described input shaft free-sliding spline is meshed simultaneously;
The high-grade gear of the low-grade gear of described jack shaft and described jack shaft is all flexibly connected with described casing by described jack shaft separately; The high-grade gear of described jack shaft can drive the low-grade gear of described jack shaft to rotate by described jack shaft;
The external tooth of the low-grade gear teeth of gear of described jack shaft and the gear teeth of described low-grade change gear, described planet carrier is meshed, and the high-grade gear teeth of gear of described jack shaft and the gear teeth of described high-grade change gear are meshed;
The number of teeth of the gear teeth of described low-grade driving gear equals the number of teeth of the gear teeth of described high-grade driving gear;
The number of teeth of the gear teeth of described low-grade change gear is less than the number of teeth of the gear teeth of described high-grade change gear;
The number of teeth of the gear teeth of the low-grade gear of described jack shaft is greater than the number of teeth of the gear teeth of the high-grade gear of described jack shaft.
At one alternatively in embodiment, the described transfer case for engineering vehicle also comprises emergent steering pump, and one of them is connected described power input shaft, described propons output shaft and described back axle output shaft three with the power receiving axes of described emergent steering pump by power taking driving mechanism and can drives described power receiving axes to rotate by described power taking driving mechanism;
The oil outlet of described emergent steering pump is connected with the hydraulic oil entrance for fluid-link steering of engineering vehicle, and the described hydraulic oil entrance for fluid-link steering of hydraulic oil input that can drive described emergent steering pump that the filler opening by described emergent steering pump is sucked in described power receiving axes rotation process.
At one, alternatively in embodiment, described power taking driving mechanism comprises the first power take-off gear, the second power take-off gear and power taking rotating shaft, wherein:
Described power taking rotating shaft is flexibly connected with described casing, and described the first power take-off gear is fixedly connected with described power input shaft, and described the second power take-off gear is fixedly connected with described power taking rotating shaft;
The gear teeth of described the second power take-off gear are meshed with the gear teeth of described the first power take-off gear;
Described power taking rotating shaft is connected with the described power receiving axes of described emergent steering pump and can drives described power receiving axes to rotate.
The articulated truck that the utility model embodiment provides, comprises the transfer case for engineering vehicle that motor, propons driving wheel, jackshaft driving wheel, rear bridge driven wheel and the arbitrary technological scheme of the utility model provide, wherein:
The pto＝power take-off of described motor is connected with described power input shaft and can drives described power input shaft to rotate;
Described propons output shaft is connected with described propons driving wheel by front drive axle and described propons output shaft can drive described propons driving wheel to rotate by described front drive axle;
Described back axle output shaft is connected with described jackshaft driving wheel by middle ransaxle, and described back axle output shaft can drive described jackshaft driving wheel to rotate by described middle ransaxle;
Described back axle output shaft is connected with described rear bridge driven wheel by back driving axle, and described back axle output shaft can drive described rear bridge driven wheel to rotate by described back driving axle.
At one, alternatively in embodiment, articulated dumping car is three bridge all-wheel drive vehicleses;
The number of described propons driving wheel, described jackshaft driving wheel and described rear bridge driven wheel is all at least two.
Based on technique scheme, the utility model embodiment at least can produce following technique effect:
The transfer case for engineering vehicle providing due to the utility model, the rotation axis of its propons output shaft overlaps with the rotation axis of back axle output shaft, in the situation that having guaranteed that propons output shaft and back axle output shaft ground Clearance are all large, can use other to manufacture lower differential mechanism or the differential mechanism of matching requirements, reduce thus the processing and assembling difficulty of whole transfer case, so solved prior art, had the technical problem that processing and assembling difficulty is larger.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, forms the application's a part, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
The schematic diagram of annexation between the chief component of the transfer case for engineering vehicle that Fig. 1 provides for the utility model embodiment;
The transfer case for engineering vehicle that Fig. 2 provides for the utility model embodiment schematic diagram of annexation between gear shift combined cover and miscellaneous part when low-grade working state;
The transfer case for engineering vehicle that Fig. 3 provides for the utility model embodiment schematic diagram of annexation between gear shift combined cover and miscellaneous part when high-grade working state;
When the internal tooth of transfer case propons combined cover for engineering vehicle that Fig. 4 provides for the utility model embodiment and the external tooth of sun gear output shaft are separated, the schematic diagram of annexation between propons combined cover and miscellaneous part;
When the external tooth of the transfer case sun gear output shaft for engineering vehicle that Fig. 5 provides for the utility model embodiment and the external tooth of propons output shaft are all meshed with the internal tooth of propons combined cover, the schematic diagram of annexation between propons combined cover and miscellaneous part;
The engaging piece of transfer case planet carrier for engineering vehicle that Fig. 6 provides for the utility model embodiment is, the external tooth of sun gear output shaft while being all meshed with the internal tooth of propons combined cover with the external tooth three of propons output shaft, the schematic diagram of annexation between propons combined cover and miscellaneous part;
Reference character: 1, power input shaft; 2, casing; 3, low-grade change gear; 31, low-grade driving gear; 4, input shaft free-sliding spline; 5, gear shift combined cover; 6, high-grade change gear; 61, high-grade driving gear; 7, the low-grade gear of jack shaft; 8, the high-grade gear of jack shaft; 9, planet carrier; 10, planet wheel; 11, back axle output shaft; 12, propons output shaft; 13, sun gear output shaft; 14, propons combined cover; 15, the first power take-off gear; 16, the second power take-off gear; IV, power taking rotating shaft; 17, differential gear.
Embodiment
Can understand the distinctive points between content of the present utility model and the utility model and prior art with reference to accompanying drawing Fig. 1～Fig. 6 and word content below.Below, by accompanying drawing and the mode of enumerating optional embodiments more of the present utility model, the technical solution of the utility model (comprising optimal technical scheme) is described in further detail.It should be noted that: any technical characteristics in the present embodiment, any technological scheme is all the technical characteristics of plurality of optional or one or more in optional technological scheme, cannot exhaustive all alternative technical characteristicss of the present utility model and alternative technological scheme in order to describe succinct need in presents, also the mode of execution that is not easy to each technical characteristics all emphasizes that it is one of optional numerous embodiments, so those skilled in the art should know: arbitrary technological means that the utility model can be provided is replaced or any two or more technological means or technical characteristics that the utility model is provided combine mutually and obtain new technological scheme.Any technical characteristics in the present embodiment and any technological scheme all do not limit protection domain of the present utility model, protection domain of the present utility model should comprise those skilled in the art do not pay creative work thinkable any alternate embodiments and those skilled in the art any two or more technological means that the utility model is provided or technical characteristics combine mutually and the new technological scheme that obtains.
The utility model embodiment provides that a kind of processing and assembling difficulty is little, the ground Clearance of the vehicle of applying this transfer case is large, passing ability is more preferably for the transfer case of engineering vehicle and this is set for the articulated truck of the transfer case of engineering vehicle.
Technological scheme the utility model being provided below in conjunction with Fig. 1～Fig. 6 is carried out more detailed elaboration.
As shown in Fig. 1～Fig. 6, the transfer case for engineering vehicle that the utility model embodiment provides comprise casing 2, power input shaft 1, propons output shaft 12, back axle output shaft 11 (also can be called: back axle output shaft) and differential gear 17, wherein:
Power input shaft 1, propons output shaft 12 and back axle output shaft 11 are all flexibly connected with casing 2 separately.
Differential gear 17 is arranged between power input shaft 1, propons output shaft 12 and back axle output shaft 11 threes, and power input shaft 1 drives propons output shafts 12 and the back axle output shaft 11 can again can be with identical rotational speed with different rotational speed with respect to casing 2 by differential gear 17.
The rotation axis of propons output shaft 12 overlaps with the rotation axis of back axle output shaft 11.
The transfer case for engineering vehicle providing due to the utility model, the rotation axis of its propons output shaft 12 overlaps with the rotation axis of back axle output shaft 11, in the situation that having guaranteed that propons output shaft 12 and 11 ground Clearances of back axle output shaft are all large, can use other to manufacture lower differential mechanism or the differential mechanism of matching requirements, reduce thus the processing and assembling difficulty of whole transfer case.
As preferably a kind of or mode of execution alternatively, differential gear 17 comprises power transmission mechanism and differential mechanism, differential mechanism (or claim: differential mechanism) comprise planet carrier 9, planet wheel 10 and sun gear output shaft 13, wherein:
Planet carrier 9 is flexibly connected with casing 2, and planet carrier 9 is connected with power input shaft 1 by power transmission mechanism, and power input shaft 1 can drive planet carrier 9 around the pivot axis of planet carrier 9 by power transmission mechanism.
Planet wheel 10 is flexibly connected with planet carrier 9, and one end that back axle output shaft 11 is positioned at casing 2 is fixedly connected with back axle gear ring or both are integral type structure.
The gear teeth that deviate from the rotation axis of planet carrier 9 in the gear teeth of planet wheel 10 are meshed with the internal tooth of back axle gear ring, and the gear teeth that approach the rotation axis of planet carrier 9 in the gear teeth of planet wheel 10 are meshed with the external tooth of sun gear output shaft 13.
Sun gear output shaft 13 is provided with separately attached parts between the two with propons output shaft 12 and (is preferably propons combined cover 14, propons combined cover also can be called: spline combined cover), separately attached parts is when full-time differential link position, both are connected sun gear output shaft 13 and propons output shaft 12, and sun gear output shaft 13 can drive propons output shaft 12 to rotate.Separately attached parts is when propons off position, and both are separated sun gear output shaft 13 and propons output shaft 12.
When separately attached parts is during in full-time differential link position, above-mentioned differential mechanism can be realized propons output shaft 12 and with respect to casing 2, rotate with different rotating speeds from back axle output shaft 11.
That above-mentioned differential mechanism has advantages of is simple in structure, be convenient to manufacture, assembling, has reduced thus the processing and assembling difficulty of whole transfer case.
In the utility model with the planet carrier 9 of external tooth and external splines, planet wheel 10, with the back axle output shaft 11 of internal tooth, sun gear output shaft 13 is common forms a set of planet differential mechanism.According to the different back axle output shafts 11 of each bridge resistance and sun gear output shaft 13 rotating speeds, can change to some extent, obtain corresponding minute and turn round ratio, make automobile can adapt to better the variation of running resistance, improve the passing capacity in difficult section.
As preferably a kind of or mode of execution alternatively, the number of planet wheel 10 is at least two, and each planet wheel 10 is all formed and is rotatably connected by the rotating shaft that is fixedly connected with planet carrier 9 and planet carrier 9.
It is comparatively stable in sun gear output shaft 13 transmission process when the number of planet wheel 10 is more.
As preferably a kind of or mode of execution alternatively, a wherein part for planet carrier 9 is extended casing 2, separately attached parts is arranged on sun gear output shaft 13, propons output shaft 12 and planet carrier 9 and extends between the part three of casing 2, and separately attached parts is when differential locking link position, the part three that sun gear output shaft 13, propons output shaft 12 and planet carrier 9 extend casing 2 is connected and three is wherein arbitrary can drive in three other by separately attached parts both rotate.
When separately attached parts is during in differential locking link position, differential mechanism does not play the effect of differential, and propons output shaft 12 rotates with respect to casing 2 with identical rotating speed with back axle output shaft 11.
As preferably a kind of or mode of execution alternatively, separately attached parts is propons combined cover 14, and the part that planet carrier 9 extends casing 2 is provided with engaging piece (engaging piece can be free-sliding spline), wherein:
Separately attached parts is when full-time differential link position, and the external tooth of sun gear output shaft 13 is all meshed with the internal tooth of propons combined cover 14 with the external tooth of propons output shaft 12.
Separately attached parts is when propons off position, and the external tooth of propons output shaft 12 is meshed with the internal tooth of propons combined cover 14, and the internal tooth of the external tooth of sun gear output shaft 13 and propons combined cover 14 is separated.
Separately attached parts is when differential lockup state, and the external tooth of the engaging piece of planet carrier 9, sun gear output shaft 13 is all meshed with the internal tooth of propons combined cover 14 with the external tooth three of propons output shaft 12.
Can be by adjusting the position of separately attached parts in said structure, realize this transfer case and the adjusting of state that the engineering vehicle of this transfer case is set.
Propons combined cover 14 is a set of gas control gearshift combined cover that propons output shaft 12 arranges, by controlling the position of propons combined cover 14, can realize disengagement, full-time differential and the differential locking to propons output, not only realize the power input of Liao Yi road, the output of two-way power, and it is controlled to have realized propons power output mode.
The concrete adjustment process of propons combined cover 14 positions is as follows:
Propons combined cover 14 is positioned at position I as shown in Figure 4, and when empty set is on propons output shaft 12, propons output shaft 12 and sun gear output shaft 13 are off state, and power cannot be delivered to propons output shaft 12, is propons disengaged condition.
Propons combined cover 14 is positioned at position II as shown in Figure 5, being about to propons output shaft 12 links together with the forward bridge combined cover of sun gear output shaft 13, planet wheel 10 not only can revolve round the sun but also can rotation, the normal differential running of whole differential mechanism, power is delivered to propons output shaft 12 through sun gear output shaft 13, front and back output divides and turns round by a certain percentage, is full-time differential state.
When there is wheel-slip in vehicle, by operation gear change system, make propons combined cover 14 as shown in Figure 6 be positioned at position III, be about to propons output shaft 12 and link together with sun gear output shaft 13 and the forward bridge combined cover 14 of planet carrier 9, now planet wheel 10 not rotations, planetary differential integral rigidity is rotated, lose differential action, before and after making, output, with turning round, has strengthened the rigidity on chassis, is differential lockup state.
As preferably a kind of or mode of execution alternatively, power transmission mechanism comprises input shaft free-sliding spline 4, low-grade change gear 3, high-grade change gear 6, gear shift combined cover 5, jack shaft, the low-grade gear 7 of jack shaft and the high-grade gear 8 of jack shaft, wherein:
The not direct ransaxle of jack shaft, jack shaft is transferring power in casing.
Input shaft free-sliding spline 4 is fixedly connected with power input shaft 1.
Low-grade change gear 3 is all flexibly connected with power input shaft 1 separately with high-grade change gear 6, and low-grade change gear 3 is installed with low-grade driving gear 31, and high-grade change gear 6 is installed with high-grade driving gear 61.
The internal tooth input shaft free-sliding spline 4 of gear shift combined cover 5 is meshed, and gear shift combined cover 5 can slide into the position that the internal tooth of gear shift the combined cover 5 and gear teeth of low-grade driving gear 31 and input shaft free-sliding spline 4 are meshed simultaneously, gear shift combined cover 5 can also slide into the internal tooth that makes gear shift combined cover 5 and the position of stating the gear teeth that high-grade driving gear 61 takes turns and input shaft free-sliding spline 4 and being meshed simultaneously.
The low-grade gear 7 of jack shaft and the high-grade gear 8 of jack shaft are all flexibly connected with casing 2 by jack shaft separately.The high-grade gear of jack shaft can drive the low-grade gear of jack shaft to rotate by jack shaft; The low-grade gear 7 of jack shaft and the high-grade gear 8 of jack shaft can all be fixedly connected with jack shaft separately.
The external tooth of the low-grade gear teeth of gear 7 of jack shaft and the gear teeth of low-grade change gear 3, planet carrier 9 is meshed, and the gear teeth of the high-grade gear 8 of jack shaft are meshed with the gear teeth of high-grade change gear 6.
The number of teeth of the gear teeth of low-grade driving gear 31 equals the number of teeth of the gear teeth of high-grade driving gear 61.
The number of teeth of the gear teeth of low-grade change gear 3 is less than the number of teeth of the gear teeth of high-grade change gear 6.
The number of teeth of the gear teeth of the low-grade gear 7 of jack shaft is greater than the number of teeth of the gear teeth of the high-grade gear 8 of jack shaft.
Gear shift combined cover 5 is preferably and adopts by the gearshift combined cover of pneumatic control, can realize like this input shaft is connected with low-grade power shift gear with high-grade power shift gear respectively, by meshing with the low-grade gear 7 of jack shaft or the high-grade gear 8 of jack shaft, realize the switching of high and low shift.
Above-mentioned gearshift mechanism is simply compact, gear is many, ratio coverage is large, volume is little, low cost of manufacture.
The concrete adjustment process of gearshift combined cover 5 positions is as follows:
By the combined cover 5 of shifting gears as shown in Figure 2 move to left with the combination gear ring of the low-grade gear 3 of power input shaft in conjunction with after, the power transmitting from input shaft 1, through low-grade change gear 3, the low-grade gear 7 of jack shaft, planet carrier 9, planet wheel 10, pass to sun gear output shaft 13 and back axle output shaft 11, this gear of transfer case is bottom gear.
By the combined cover 5 of shifting gears as shown in Figure 3 move to right with the combination gear ring of the low-grade gear 6 of power input shaft in conjunction with after, the power transmitting from input shaft 1, through high-grade change gear 6, the high-grade gear 8 of jack shaft, the low-grade gear 7 of jack shaft, planet carrier 9, planet wheel 10, pass to sun gear output shaft 13 and back axle output shaft 11, this gear of transfer case is top gear.
As preferably a kind of or mode of execution alternatively, for the transfer case of engineering vehicle, also comprise emergent steering pump, the power receiving axes and power input shaft 1, propons output shaft 12 and back axle output shaft 11 threes of emergent steering pump one of them by power taking driving mechanism, be connected and power input shaft 1, propons output shaft 12 and back axle output shaft 11 threes one of them can rotate by power taking driving mechanism drive power receiving axes.
The emergent oil outlet of steering pump and the hydraulic oil entrance for fluid-link steering of engineering vehicle are connected, and the hydraulic oil that can drive emergent steering pump that the filler opening by emergent steering pump is sucked in power receiving axes rotation process is inputted the hydraulic oil entrance for fluid-link steering.
Power input shaft 1 end is connected with the power receiving axes of emergent steering pump, can run out of steam while being dragged at vehicle, and the rotation that utilizes tire drives emergent steering pump to work by the accelerating function of ransaxle, transfer case, for fluid-link steering provides power.
As preferably a kind of or mode of execution alternatively, power taking driving mechanism comprise the first power take-off gear 15, the second power take-off gear 16 and power taking rotating shaft (or claim: emergencypump speedup power taking mouth) IV, wherein:
Power taking rotating shaft is flexibly connected with casing 2, and the first power take-off gear 15 is fixedly connected with power input shaft 1, and the second power take-off gear 16 is fixedly connected with power taking rotating shaft.
The gear teeth of the second power take-off gear 16 are meshed with the gear teeth of the first power take-off gear 15.
Power taking rotating shaft is connected with the power receiving axes of emergent steering pump and can drives power receiving axes to rotate.
Above-mentioned driving mechanism adopts gear transmission to realize, and has velocity ratio high, is convenient to handling, advantage simple in structure.The speedup power taking mouth IV that input shaft end arranges, for hydraulic emergency steering pump provides power source.On this transfer case, other axle heads also can arrange the fast power taking mouth of increase and decrease.
The articulated truck that the utility model embodiment provides, comprises the transfer case for engineering vehicle that motor, propons driving wheel, jackshaft driving wheel, rear bridge driven wheel and the arbitrary technological scheme of the utility model provide, wherein:
The pto＝power take-off of motor is connected with power input shaft 1 and can drives power input shaft 1 to rotate.
Propons output shaft 12 is connected with propons driving wheel by front drive axle and propons output shaft can drive propons driving wheel to rotate by front drive axle.
Back axle output shaft 11 (by middle ransaxle, back driving axle) is connected with jackshaft driving wheel and rear bridge driven wheel and back axle output shaft can drive jackshaft driving wheel and rear bridge driven wheel to rotate.
Middle ransaxle is penetrating bridge, ransaxle and back driving axle during the rear output shaft of transfer case can directly drive.When the utility model articulated truck travels on hard pavement (road surface of mating formation), can allow the differential lock of transfer case throw off, at ice and snow, during the complex road surfaces such as quagmire, differential lock must be locked, otherwise possibly cannot advance; Get back to Bu Huaying road (road surface of mating formation), differential lock will be untied at once.Meanwhile, on the good hard pavement of condition, can also select propons output shaft 12 to throw off, only by back axle output shaft 11, drive, reach speedup, reduce oil consumption and reduce the object of tire wear.
The transfer case that the utility model provides both can have been realized the driving to propons output shaft 12 and back axle output shaft 11, also can be when engine stop to be worked, the power producing while utilizing propons output shaft 12 and back axle output shaft 11 to rotate is for the emergent purposes such as turn to.
As preferably a kind of or mode of execution alternatively, articulated truck is three bridge all-wheel drive vehicleses.
The number of propons driving wheel, jackshaft driving wheel and rear bridge driven wheel is all at least two, and number is preferably two.When number is two, this three bridge drives articulated truck can utilize propons combined cover 14 to realize its switching between 6 * 6 drivings and 6 * 4 drive, and can utilize propons combined cover 14 to realize the switching between full-time differential function and differential latch functions.
Above-mentioned arbitrary technological scheme disclosed in the utility model unless otherwise stated, if it discloses number range, so disclosed number range is preferred number range, any it should be appreciated by those skilled in the art: preferred number range is only the obvious or representative numerical value of technique effect in many enforceable numerical value.Because numerical value is more, cannot be exhaustive, so the utility model just discloses part numerical value to illustrate the technical solution of the utility model, and the above-mentioned numerical value of enumerating should not form the restriction of the utility model being created to protection domain.
If used the words such as " first ", " second " to limit component herein, those skilled in the art should know: the use of " first ", " second " is only used to be convenient to describe above component are distinguished as not having outside Stated otherwise, and above-mentioned word does not have special implication.
Simultaneously, if above-mentioned the utility model discloses or has related to component or the structural member of connection fastened to each other, so, unless otherwise stated, be fixedly connected with and can be understood as: can dismantle and be fixedly connected with (for example using bolt or screw to connect), also can be understood as: non-removable being fixedly connected with (for example rivet, weld), certainly, connection fastened to each other also can for example, be replaced (obviously cannot adopt except integrally formed technique) by integral type structure (use casting technique is integrally formed to be created).
In addition, in the disclosed arbitrary technological scheme of above-mentioned the utility model applied for the term that represents position relationship or shape unless otherwise stated its implication comprise and its approximate, similar or approaching state or shape.Arbitrary parts that the utility model provides can be both to be assembled by a plurality of independent constituent elements, the produced separate part of the technique that also can be one of the forming.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the field are to be understood that: still can modify or part technical characteristics is equal to replacement embodiment of the present utility model; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technological scheme scope that the utility model asks for protection.
Claims (11)
1. for a transfer case for engineering vehicle, it is characterized in that, comprise casing, power input shaft, propons output shaft, back axle output shaft and differential gear, wherein:
Described power input shaft, described propons output shaft and described back axle output shaft are all flexibly connected with described casing separately;
Described differential gear is arranged between described power input shaft, described propons output shaft and described back axle output shaft three, and described power input shaft drives described propons output shaft and described back axle output shaft by described differential gear, and both can again can be with identical rotational speed with different rotational speed with respect to described casing;
The rotation axis of described propons output shaft overlaps with the rotation axis of described back axle output shaft.
2. the transfer case for engineering vehicle according to claim 1, is characterized in that, described differential gear comprises power transmission mechanism and differential mechanism, and described differential mechanism comprises planet carrier, planet wheel and sun gear output shaft, wherein:
Described planet carrier is flexibly connected with described casing, and described planet carrier is connected with described power input shaft by power transmission mechanism, and described power input shaft can drive described planet carrier around the pivot axis of described planet carrier by described power transmission mechanism;
Described planet wheel is flexibly connected with described planet carrier, and one end that described back axle output shaft is positioned at described casing is fixedly connected with back axle gear ring or both are integral type structure;
The gear teeth that deviate from the rotation axis of described planet carrier in the gear teeth of described planet wheel are meshed with the internal tooth of described back axle gear ring, and the gear teeth of rotation axis and the external tooth of described sun gear output shaft that in the gear teeth of described planet wheel, approach described planet carrier are meshed;
Described sun gear output shaft and described propons output shaft are provided with separately attached parts between the two, described separately attached parts is when full-time differential link position, described sun gear output shaft is connected with described propons output shaft, and described sun gear output shaft can drive described propons output shaft rotation; Described separately attached parts is when propons off position, and described sun gear output shaft and described propons output shaft are separated.
3. the transfer case for engineering vehicle according to claim 2, is characterized in that, the number of described planet wheel is at least two, and described in each, planet wheel is all rotatably connected by rotating shaft and the formation of described planet carrier being fixedly connected with described planet carrier.
4. the transfer case for engineering vehicle according to claim 2, it is characterized in that, a wherein part for described planet carrier is extended described casing, described separately attached parts is arranged on described sun gear output shaft, described propons output shaft and described planet carrier extend between the part three of described casing, and described separately attached parts is when differential locking link position, described sun gear output shaft, the part three that described propons output shaft and described planet carrier extend described casing be connected and three wherein arbitrary energy by described separately attached parts, drive in three other both rotate.
5. the transfer case for engineering vehicle according to claim 4, is characterized in that, described separately attached parts is propons combined cover, and the part that described planet carrier extends described casing is provided with engaging piece, wherein:
Described separately attached parts is when full-time differential link position, and the external tooth of described sun gear output shaft is all meshed with the internal tooth of described propons combined cover with the external tooth of described propons output shaft; Described separately attached parts is when propons off position, and the external tooth of described propons output shaft is meshed with the internal tooth of described propons combined cover, and the internal tooth of the external tooth of described sun gear output shaft and described propons combined cover is separated; Described separately attached parts is when differential lockup state, and the engaging piece of described planet carrier, the external tooth of described sun gear output shaft are all meshed with the internal tooth of described propons combined cover with the external tooth three of described propons output shaft.
6. the transfer case for engineering vehicle according to claim 5, is characterized in that, described engaging piece is free-sliding spline.
7. the transfer case for engineering vehicle according to claim 2, it is characterized in that, described power transmission mechanism comprises input shaft free-sliding spline, low-grade change gear, high-grade change gear, gear shift combined cover, jack shaft, the low-grade gear of jack shaft and the high-grade gear of jack shaft, wherein:
Described input shaft free-sliding spline is fixedly connected with described power input shaft;
Described low-grade change gear is all flexibly connected with described power input shaft separately with described high-grade change gear, and described low-grade change gear is installed with low-grade driving gear, and described high-grade change gear is installed with high-grade driving gear;
The internal tooth of described gear shift combined cover is meshed with described input shaft free-sliding spline, and described gear shift combined cover can slide into the position that the internal tooth of described gear shift combined cover and the gear teeth of described low-grade driving gear and described input shaft free-sliding spline are meshed simultaneously, described gear shift combined cover can also slide into the internal tooth that makes described gear shift combined cover with described in state the gear teeth of high-grade driving gear and the position that described input shaft free-sliding spline is meshed simultaneously;
The high-grade gear of the low-grade gear of described jack shaft and described jack shaft is all flexibly connected with described casing by described jack shaft separately; The high-grade gear of described jack shaft can drive the low-grade gear of described jack shaft to rotate by described jack shaft;
The external tooth of the low-grade gear teeth of gear of described jack shaft and the gear teeth of described low-grade change gear, described planet carrier is meshed, and the high-grade gear teeth of gear of described jack shaft and the gear teeth of described high-grade change gear are meshed;
The number of teeth of the gear teeth of described low-grade driving gear equals the number of teeth of the gear teeth of described high-grade driving gear;
The number of teeth of the gear teeth of described low-grade change gear is less than the number of teeth of the gear teeth of described high-grade change gear;
The number of teeth of the gear teeth of the low-grade gear of described jack shaft is greater than the number of teeth of the gear teeth of the high-grade gear of described jack shaft.
8. according to the arbitrary described transfer case for engineering vehicle of claim 1-7, it is characterized in that, the described transfer case for engineering vehicle also comprises emergent steering pump, and one of them is connected described power input shaft, described propons output shaft and described back axle output shaft three with the power receiving axes of described emergent steering pump by power taking driving mechanism and can drives described power receiving axes to rotate by described power taking driving mechanism;
The oil outlet of described emergent steering pump is connected with the hydraulic oil entrance for fluid-link steering of engineering vehicle, and the described hydraulic oil entrance for fluid-link steering of hydraulic oil input that can drive described emergent steering pump that the filler opening by described emergent steering pump is sucked in described power receiving axes rotation process.
9. the transfer case for engineering vehicle according to claim 8, is characterized in that, described power taking driving mechanism comprises the first power take-off gear, the second power take-off gear and power taking rotating shaft, wherein:
Described power taking rotating shaft is flexibly connected with described casing, and described the first power take-off gear is fixedly connected with described power input shaft, and described the second power take-off gear is fixedly connected with described power taking rotating shaft;
The gear teeth of described the second power take-off gear are meshed with the gear teeth of described the first power take-off gear;
Described power taking rotating shaft is connected with the described power receiving axes of described emergent steering pump and can drives described power receiving axes to rotate.
10. an articulated truck, is characterized in that, comprises motor, propons driving wheel, jackshaft driving wheel, rear bridge driven wheel and the arbitrary described transfer case for engineering vehicle of claim 1-9, wherein:
The pto＝power take-off of described motor is connected with described power input shaft and can drives described power input shaft to rotate;
Described propons output shaft is connected with described propons driving wheel by front drive axle and described propons output shaft can drive described propons driving wheel to rotate by described front drive axle;
Described back axle output shaft is connected with described jackshaft driving wheel by middle ransaxle, and described back axle output shaft can drive described jackshaft driving wheel to rotate by described middle ransaxle;
Described back axle output shaft is connected with described rear bridge driven wheel by back driving axle, and described back axle output shaft can drive described rear bridge driven wheel to rotate by described back driving axle.
11. articulated trucks according to claim 10, is characterized in that, articulated dumping car is three bridge all-wheel drive vehicleses;
The number of described propons driving wheel, described jackshaft driving wheel and described rear bridge driven wheel is all at least two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420252446.9U CN203948609U (en) | 2014-05-16 | 2014-05-16 | Transfer case and articulated truck for engineering vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420252446.9U CN203948609U (en) | 2014-05-16 | 2014-05-16 | Transfer case and articulated truck for engineering vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203948609U true CN203948609U (en) | 2014-11-19 |
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ID=51890646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420252446.9U Withdrawn - After Issue CN203948609U (en) | 2014-05-16 | 2014-05-16 | Transfer case and articulated truck for engineering vehicle |
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| Country | Link |
|---|---|
| CN (1) | CN203948609U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982632A (en) * | 2014-05-16 | 2014-08-13 | 徐工集团工程机械股份有限公司 | Transfer case for engineering vehicle and hinging dumper |
| WO2017156722A1 (en) * | 2016-03-16 | 2017-09-21 | 徐州重型机械有限公司 | Drive axle assembly and engineering vehicle |
| SE1950739A1 (en) * | 2019-06-18 | 2020-12-19 | Scania Cv Ab | A powertrain for a vehicle |
-
2014
- 2014-05-16 CN CN201420252446.9U patent/CN203948609U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982632A (en) * | 2014-05-16 | 2014-08-13 | 徐工集团工程机械股份有限公司 | Transfer case for engineering vehicle and hinging dumper |
| CN103982632B (en) * | 2014-05-16 | 2016-06-01 | 徐工集团工程机械股份有限公司 | For transfer case and the hinged wagon tremie of engineering truck |
| WO2017156722A1 (en) * | 2016-03-16 | 2017-09-21 | 徐州重型机械有限公司 | Drive axle assembly and engineering vehicle |
| SE1950739A1 (en) * | 2019-06-18 | 2020-12-19 | Scania Cv Ab | A powertrain for a vehicle |
| SE543431C2 (en) * | 2019-06-18 | 2021-02-16 | Scania Cv Ab | A powertrain for a vehicle |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141119 Effective date of abandoning: 20160601 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |