CN204341186U - 360 degree of four-wheel steering farm vehicles - Google Patents
360 degree of four-wheel steering farm vehicles Download PDFInfo
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- CN204341186U CN204341186U CN201420857011.7U CN201420857011U CN204341186U CN 204341186 U CN204341186 U CN 204341186U CN 201420857011 U CN201420857011 U CN 201420857011U CN 204341186 U CN204341186 U CN 204341186U
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- steering
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Abstract
A kind of 360 degree of four-wheel steering farm vehicles, it comprises column axletree, axletree comprises the dynamical axis, steering shaft and the protecting sleeve that are nested with successively from inside to outside, pass to dynamical axis after horizontal direction power is become vertical direction power respectively through tumbler I by the mouth of front driving axle and rear driving axle, vertical power is become the power intake that horizontal power passes to wheel hub through tumbler II by the lower end of dynamical axis again; The steering shaft of axletree arranges a turbine II, and the turbine I of four-wheel steering control mechanism drives the worm screw be mated, and described worm screw drives the turbine II be mated, thus drives described steering axes.The utility model achieves 360 degree of rotations of farm vehicle four-wheel, and convenient working, tractive performance is good.
Description
Technical field
The utility model relates to farm vehicle, specifically a kind of can at the farm vehicle of 360 degree of arbitrarily angled interior four-wheel steerings.
Background technology
Along with the quickening of Tendency of Agricultural Machinery in China paces, farm vehicle is with a very important position modern agriculture field, such as, farm tractor in sowing, fertilising, plough in whole, ridging, transplanting, cultivation and banking, harvesting results etc. and all be unable to do without it.But there is large, in stays in the little space problem of Turning radius in current farm tractor, brings certain restriction to production process entire mechanization in actual use.When trac. works in the fields, due to by the restriction of wheel steering scope, when the edge of a field turns to, turn radius is large, and can remain sub-fraction field can not operation; Meanwhile, in order to improve farmland utilization rate, the operation track that most farmland is left is very narrow, causes trac. often can damage the phenomenon of the crops of surrounding by pressure when turning to.
A lot of people proposes four-wheel steering and solves this problem now, such as Chinese patent CN 201633774 U discloses a kind of four wheel steering control of automobile device, it achieve vehicular four wheels to turn to, and can by handling pin, control rear-axle steering simultaneously, and trailing wheel both can rotate to same direction with front-wheel, also can rotate to the direction contrary with front-wheel, but the end of this four-wheel steering controller still connects steering track rod, by steering track rod driving automobile suspension gear, thus drive wheel steering joint to rotate, the horizontal drive axle structure of vehicle does not change, therefore steering angle limits by drive axle, can not turn to arbitrarily, still can leave part field cannot operation.
Affect by drive axle structure for wheel steering, can not 360 degree of problems turned to, Chinese patent CN 202186422 U disclose a kind of can 360 degree of steering hardwarees turned to, it realizes wheel steering by chain sprocket, but this mechanism needs to install electrical motor on wheel realizes wheel driving, whole device tractive performance is poor, and sprocket wheel chain structure easily damages fault, is therefore not suitable for farm vehicle field and uses.
In sum, want on the basis not changing agricultural machine propulsion source, realize wheel 360 degree to turn to, need to propose a kind of drive axle structure do not hindered wheel steering, and, also need the wheel steering actuating unit proposing a kind of steering swivel do not adopted on steering track rod band motor car wheel.
Utility model content
Wheel 360 degree of problems turned to are realized when not changing farm vehicle propulsion source for solving, the utility model proposes a kind of 360 degree of four-wheel steering farm vehicles, it has column axletree and a kind of novel wheel steering actuating unit, achieves the accessible 360 degree of rotations of wheel.
For solving the problem, the utility model is by the following technical solutions: a kind of 360 degree of four-wheel steering farm vehicles, comprise vehicle frame, wheel hub, driving engine, change-speed box, power-transfer clutch, part-time case, front driving axle, rear driving axle and four-wheel steering control mechanism, the power of described driving engine is delivered to front driving axle and rear driving axle respectively through part-time case, it is characterized in that, also comprise axletree, described axletree is vertically arranged, axletree comprises the dynamical axis be nested with successively from inside to outside, steering shaft and protecting sleeve, described dynamical axis is passed to after horizontal direction power is become vertical direction power respectively through tumbler I by the mouth of described front driving axle and rear driving axle, vertical power is become the power intake that horizontal power passes to wheel hub through tumbler II by the lower end of described dynamical axis again, the front-wheel steering rocker shaft of described four-wheel steering control mechanism is connected a turbine I with rear-axle steering rocker shaft respectively by universal coupling, described steering shaft arranges a turbine II, described turbine I drives the worm screw be mated, described worm screw drives the turbine II be mated, thus drives described steering axes, the lower end of described steering shaft is fixedly connected with the steering swivel of wheel hub, and the housing of described tumbler II is fixedly connected with steering shaft lower end, described vehicle frame is arranged on front driving axle and rear driving axle, described part-time case is all connected by universal coupling with between front driving axle and rear driving axle.
Further, in order to improve the damping performance of car body, described vehicle frame and be provided with bumper between front driving axle and rear driving axle.
As the preferred embodiment that steering swivel and steering shaft are fixed, described steering swivel is provided with arc connector, the cambered surface of arc connector matches with the cambered surface of described steering shaft, a lug I is set respectively at the two ends of described arc connector, a lug II corresponding with lug I is also set respectively in the both sides of described steering shaft, lug I and lug II are provided with the through hole matched.
Further, described in each, the bottom of axletree is symmetrical fixes two wheels, and described tumbler II has two output shafts, is respectively two wheels and provides power.
The beneficial effects of the utility model are: it solves the drawback by drive axle restriction in wheel steering process by column rotation shaft of wheel, and, the dynamical axis of power in rotation shaft of wheel of drive axle passes to the power intake of wheel hub, and power still adopts original engine power; Its steering swivel system drives the steering shaft of column rotation shaft of wheel by worm screw, and then drives rotation of wheel, therefore achieves 360 degree of rotations of wheel; Between drive axle and part-time case, the mouth of four-wheel steering control mechanism is all connected by universal coupling with between turbine, ensure that between front-wheel part and trailing wheel part as being flexible coupling, adding the bumper between vehicle frame and drive axle, ensure that vehicle has good damping performance.
Accompanying drawing explanation
Fig. 1 is structure diagram of the present utility model;
Fig. 2 is the utility model wheel steering part-structure schematic diagram;
Fig. 3 is the first example structure schematic diagram that the utility model steering swivel and steering shaft are fixed;
Fig. 4 is the second example structure schematic diagram that the utility model steering swivel and steering shaft are fixed;
Fig. 5 is the structural representation that axletree of the present utility model arranges two wheels;
Fig. 6 is axletree principle assumption diagram of the present utility model;
Fig. 7 is the structural representation of the utility model four-wheel steering controller.
In figure, 1 four-wheel steering control mechanism, 11 bearing circle, 12 universal couplings, 12 ＇ universal couplings, 12 ＇ ＇ universal couplings, 13 steering controllers, 1301 housings, 1302 steering universal joint axles, 1303 front-wheel steering rocker shaftes, 1304 first driving gears, 1305 worm gears, 1306 first ring gears, 1307 two-way tooth clutchs, 1308 pins, 1309 splines, 1310 second ring gears, 1311 rear-axle steering rocker shaftes, 1312 third wheels, 1313 second driving gears, turbine and worm group before 2, 2 ＇ rear worm wheel worm screw groups, 21, turbine I, 22 worm screws, 3 front driving axles, 3 ＇ rear driving axles, 4 axletrees, 41 dynamical axiss, 42 steering shafts, 421 turbines II, 422 lugs II, 43 protecting sleeves, 5 tumblers I, 6 tumblers II, 61 finishing bevel gear cuters, 62 finishing bevel gear cuters, 63 housings, 7 wheel hubs, 71 power intakes, 72 steering swivels, 721 arc connectors, 7211 lugs I, 9 wheels.
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the utility model is described in detail.
As shown in Figures 1 to 7, the utility model comprises four-wheel steering control mechanism 1, is connected to front turbine and worm group 2 and rear worm wheel worm screw group 2 ＇ of four-wheel steering control mechanism two mouths, front driving axle 3, rear driving axle 3 ＇, connects the axletree 4 of wheel and drive axle clutch end.Engine section of the present utility model still continues to use existing tractor engine system, and change-speed box and power-transfer clutch are not done to change yet, and therefore do not draw in figure.Front driving axle 3 is connected with the mouth of part-time case respectively with the clutch end of rear driving axle 3 ＇, and front driving axle 3 and rear driving axle 3 ＇ comprise diff and retarder.Be connected respectively by universal coupling with between front driving axle 3 and rear driving axle 3 ＇ at part-time case (power distribution exported by change-speed box in 4-wheel driven car system, to the structure of each drive axle, therefore adopts the four-wheel drive system of 4-wheel driven car).
Below each several part of the present utility model is described in detail one by one:
Four-wheel steering control mechanism 1 comprises bearing circle 11, universal coupling and steering controller 13, bearing circle 11 is connected with the input end of steering controller 13 by a universal coupling 12, the steering effort transmitted due to bearing circle 11 is not horizontal direction, therefore, the front-wheel steering rocker shaft of steering controller 13 is connected (being namely connected on turbine I 21) with the input end of front worm and gear group 2, rear worm wheel worm screw group 2 ＇ with universal coupling 12 ＇ ＇ respectively by universal coupling 12 ＇ with rear-axle steering rocker shaft.Steering controller 13 adopts steering controller disclosed in Chinese patent CN 202186422 U, as shown in Figure 7, it comprises housing 1301, housing 1301 is built with steering universal joint axle 1302, front-wheel steering rocker shaft 1303 and rear-axle steering rocker shaft 1311, it is outer and be connected with universal coupling 12 ＇ that housing is stretched out in one end of front-wheel steering rocker shaft 1302, it is outer and be connected with universal coupling 12 ＇ ＇ that housing is stretched out in one end of rear-axle steering rocker shaft 1311, front-wheel steering rocker shaft 1303 is fixed with worm gear 1305, first driving gear 1304 and the second driving gear 1313, first driving gear 1304 and the second driving gear 1313 are positioned at the both sides of worm gear, worm gear 1305 is meshed with steering universal joint axle 1302, the other end of steering universal joint axle 1302 is connected with universal coupling 12, two-way tooth clutch 1307 rear-axle steering rocker shaft 1311 is equipped with, first ring gear 1306 and the second ring gear 1310, first ring gear 1306 and the second ring gear 1310 are positioned at the both sides of two-way tooth clutch 1307, two-way tooth clutch 1307 is equipped with pin 1308, first ring gear 1306 and the second ring gear 1310 all there is the spline 1309 that can match with two-way tooth clutch, first driving gear 1304 is meshed with the first ring gear 1306, in housing, third wheel 1312 is also housed, second driving gear 1313 engages with third wheel 1312, second ring gear 1310 also engages with third wheel 1312.When two-way tooth clutch 1307 mediates, first ring gear 1306 and the second ring gear 1310 all can freely rotate and rear-axle steering rocker shaft 1311 can not be driven to rotate on rear-axle steering rocker shaft 1311, bearing circle 11 can only control front-wheel steering rocker shaft 1303 and rotate, the now rotation direction of the first ring gear 1306 and the direction of rotation of the first driving gear 1304, the rotation direction of the second ring gear 1310 is identical with the rotation direction of the second ring gear 1310.When pull pin make the spline of two-way tooth clutch 1307 on the first ring gear 1306 in conjunction with time, first ring gear 1306 can drive rear-axle steering rocker shaft 1311 to rotate, at this moment, the rotation direction of rear-axle steering rocker shaft 1311 and the direction of rotation of front-wheel steering rocker shaft 1303, when front-wheel turns left, trailing wheel is turning clockwise then, achieves front and back wheel and synchronously turns to.When pull pin make the spline of two-way tooth clutch 1307 on the second ring gear 1310 in conjunction with time, second ring gear 1310 can drive rear-axle steering rocker shaft 1311 to rotate, at this moment, the rotation direction of rear-axle steering rocker shaft 1311 is identical with the rotation direction of front-wheel steering rocker shaft 1303, when front-wheel turns left, trailing wheel also turns left, and can realize four-wheel parallel shifted.
For front worm and gear group 2 of the present utility model and rear worm wheel worm screw group 2 ＇, its structure is identical with the worm gear structure of the steering hardware on present automobile with principle, unlike, the two ends of worm screw 22 no longer connect steering track rod, but the two ends of worm screw 22 are respectively arranged with the helical tooth engaged with the turbine II 421 on steering shaft 42.
As shown in Figure 6; axletree 4 comprises the dynamical axis 41, steering shaft 42 and the protecting sleeve 43 that are nested with successively from inside to outside; power is all become vertical direction from horizontal direction by tumbler I 5 by the power take-off shaft of front driving axle and rear driving axle; and then passing to the dynamical axis 41 of axletree 4, power is become from vertical direction the power intake 71 passing to wheel hub 7 after horizontal direction by one group of tumbler II 6 (finishing bevel gear cuter 61 in Fig. 3 and finishing bevel gear cuter 62 fit in tumbler II) by the lower end of dynamical axis 41 again.Tumbler II 6 is positioned at the lower end of steering shaft 42, and the housing 63 of tumbler II 6 is fixedly connected with steering shaft 42, like this, can rotate by driven gear commutator II 6 when steering shaft 42 rotates.Tumbler I is identical with the structure of tumbler II, all has two finishing bevel gear cuters to coordinate and forms, realize power in the horizontal direction with the conversion of vertical direction.
Each steering shaft 42 is all nested with a turbine II 421, and the worm screw transverse horizontal of turbine and worm group is arranged, and its left and right sides is engaged with the turbine II 421 on the steering shaft of left and right wheels axle respectively, and the lower end of steering shaft 42 is fixed on steering swivel 72.The protecting sleeve of described axletree 4 is fixedly connected with the protecting sleeve of worm screw in worm and gear group, and the protecting sleeve upper end of axletree 4 is also fixedly connected with the shell of tumbler I 5.
Preferably, the connection mode of steering shaft and wheel hub steering swivel as shown in Figure 4, wheel hub steering swivel is provided with arc connector 721, the cambered surface of arc connector 721 matches with the cambered surface of steering shaft 42, at the two ends of described arc connector 721, a lug I 7211 is set respectively, a lug II 422 corresponding with the lug I 7211 on arc connector 721 is also set respectively in the both sides of steering shaft 42, lug I 7211 and lug II 422 are provided with the through hole of mutual Corresponding matching, and steering shaft 42 and arc connector 721 are bolted to connection.
In the present embodiment, being provided with a wheel 9 in the lower end of axletree 4, in order to improve stability and turning performance, as shown in Figure 5, devising the second embodiment, two wheels, 9, two wheel 9 symmetries are set in the lower end of axletree and are fixed on steering shaft both sides.The steering swivel of wheel hub adopts arc connector as shown in Figure 4, the arc connector on two wheel naves and the docking of the lug on steering shaft.For the power transmission on wheel, needing adaptive for tumbler II 6 this is the tumbler of two mouths, two mouths are respectively two wheels provides power, and the tumbler of two mouths is known technology, therefore in detail its inner structure is no longer described in detail.
Vehicle frame of the present utility model is arranged on front driving axle and rear driving axle, preferably, between forward and backward drive axle and vehicle frame, is provided with damping.
The above has made detailed description to preferred implementation of the present utility model and embodiment by reference to the accompanying drawings; but the utility model is not limited to the above-described embodiment and examples; for those skilled in the art; without departing from the concept of the premise utility; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.
Claims (4)
1. 360 degree of four-wheel steering farm vehicles, comprise vehicle frame, wheel hub, driving engine, change-speed box, power-transfer clutch, part-time case, front driving axle, rear driving axle and four-wheel steering control mechanism, the power of described driving engine is delivered to front driving axle and rear driving axle respectively through part-time case, it is characterized in that, also comprise axletree, described axletree is vertically arranged, axletree comprises the dynamical axis be nested with successively from inside to outside, steering shaft and protecting sleeve, described dynamical axis is passed to after horizontal direction power is become vertical direction power respectively through tumbler I by the mouth of described front driving axle and rear driving axle, vertical power is become the power intake that horizontal power passes to wheel hub through tumbler II by the lower end of described dynamical axis again, the front-wheel steering rocker shaft of described four-wheel steering control mechanism is connected a turbine I with rear-axle steering rocker shaft respectively by universal coupling, described steering shaft arranges a turbine II, described turbine I drives the worm screw be mated, described worm screw drives the turbine II be mated, thus drives described steering axes, the lower end of described steering shaft is fixedly connected with the steering swivel of wheel hub, and the housing of described tumbler II is fixedly connected with steering shaft lower end, described vehicle frame is arranged on front driving axle and rear driving axle, described part-time case is all connected by universal coupling with between front driving axle and rear driving axle.
2. 360 degree of four-wheel steering farm vehicles according to claim 1, is characterized in that, described vehicle frame and be provided with bumper between front driving axle and rear driving axle.
3. 360 degree of four-wheel steering farm vehicles according to claim 1 and 2, it is characterized in that, described steering swivel is provided with arc connector, the cambered surface of arc connector matches with the cambered surface of described steering shaft, a lug I is set respectively at the two ends of described arc connector, a lug II corresponding with lug I is also set respectively in the both sides of described steering shaft, lug I and lug II are provided with the through hole matched.
4. 360 degree of four-wheel steering farm vehicles according to claim 3, is characterized in that, described in each, the bottom of axletree is symmetrical fixes two wheels, and described tumbler II has two output shafts, is respectively two wheels and provides power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420857011.7U CN204341186U (en) | 2014-12-30 | 2014-12-30 | 360 degree of four-wheel steering farm vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420857011.7U CN204341186U (en) | 2014-12-30 | 2014-12-30 | 360 degree of four-wheel steering farm vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204341186U true CN204341186U (en) | 2015-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420857011.7U Expired - Fee Related CN204341186U (en) | 2014-12-30 | 2014-12-30 | 360 degree of four-wheel steering farm vehicles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204341186U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104477238A (en) * | 2014-12-30 | 2015-04-01 | 林庆玉 | 360-degree four-wheel steering agricultural vehicle |
| CN105128932A (en) * | 2015-08-21 | 2015-12-09 | 樱田农机科技（泰州）有限公司 | Front-wheel steering and four-wheel steering switching mechanism of plant protection chemical and fertilizer spraying machine |
| CN108438049A (en) * | 2018-04-30 | 2018-08-24 | 王丽雅 | A kind of vehicle chassis four-wheel linkage steering apparatus |
| CN109387445A (en) * | 2018-12-06 | 2019-02-26 | 北京科技大学 | A kind of circuit accelerated loading system of direct-driven servo motor driving |
| CN109455221A (en) * | 2017-09-06 | 2019-03-12 | 益阳天华两栖车艇有限公司 | A kind of two-axle car wheel transfer |
-
2014
- 2014-12-30 CN CN201420857011.7U patent/CN204341186U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104477238A (en) * | 2014-12-30 | 2015-04-01 | 林庆玉 | 360-degree four-wheel steering agricultural vehicle |
| CN105128932A (en) * | 2015-08-21 | 2015-12-09 | 樱田农机科技（泰州）有限公司 | Front-wheel steering and four-wheel steering switching mechanism of plant protection chemical and fertilizer spraying machine |
| CN109455221A (en) * | 2017-09-06 | 2019-03-12 | 益阳天华两栖车艇有限公司 | A kind of two-axle car wheel transfer |
| CN108438049A (en) * | 2018-04-30 | 2018-08-24 | 王丽雅 | A kind of vehicle chassis four-wheel linkage steering apparatus |
| CN109387445A (en) * | 2018-12-06 | 2019-02-26 | 北京科技大学 | A kind of circuit accelerated loading system of direct-driven servo motor driving |
| CN109387445B (en) * | 2018-12-06 | 2024-05-17 | 北京科技大学 | Loop acceleration loading system driven by direct-drive servo motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20161230 |