CN102975769A - Tire-type paver and front axle thereof - Google Patents
Tire-type paver and front axle thereof Download PDFInfo
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- CN102975769A CN102975769A CN2012105525806A CN201210552580A CN102975769A CN 102975769 A CN102975769 A CN 102975769A CN 2012105525806 A CN2012105525806 A CN 2012105525806A CN 201210552580 A CN201210552580 A CN 201210552580A CN 102975769 A CN102975769 A CN 102975769A
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Abstract
The invention discloses a front axle. The front axle comprises a frame body and a wheel system, wherein a front knuckle of the front axle is hinged with the frame body in the position of a first hinging point and hinged with a pulling rod in the position of a second hinging point, and a rear knuckle is hinged with the frame body in the position of a third hinging point and hinged with the pulling rod in the position of a fourth hinging point; and the distance between the first hinging point is smaller than that between the third hinging point and the fourth hinging point, and a steering track circle of a front wheel and a steering track circle of a rear wheel are concentric circles. Therefore, connecting lines of the four hinging points form a crank and rocker mechanism, and the connecting line between the second hinging point and the fourth hinging point is a crank. According to the characteristics of the crank and rocker mechanism, a front wheel steering angle is larger than a rear wheel steering angle during steering, and moreover, the steering track circle of the front wheel and the steering track circle of the rear wheel are concentric circles, so that the abrasion of tires during steering is reduced, the service life of the tires is reduced, and the maintenance cost is saved. The invention also discloses a tire-type paver including the front axle.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly a kind of propons for paver.The invention still further relates to a kind of rubber-tyred paver that comprises above-mentioned propons.
Background technology
Along with the development of town and country capital construction, market increases day by day for the various maintenance of surface equipment especially demand of paver, and the performance requriements of paver is improved gradually.Type according to traveling gear is divided, paver mainly comprises crawler type paver and rubber-tyred paver, rubber-tyred paver adopts the mode of wheel tyre walking, than the transition of being more convenient for of crawler type paver, is mainly used in the construction of basic unit and the various material paving operations of surface layer on the express highway.
Propons is positioned at the front portion of paver, is used for supporting complete machine weight and angle of turn being provided, and front bridge portion is the important component part of rubber-tyred paver running gear, good and bad performance and the stability that directly affects rubber-tyred paver of its performance.
Please refer to Fig. 1, Fig. 1 is a kind of structural representation of typical rubber-tyred paver propons.
A kind of typical rubber-tyred paver propons comprises prop up heavy 12 who is fixedly installed on the paver chassis, the two ends of propping up heavy are separately installed with rocker 13, the front end of each rocker is installed front-wheel 15 by front steering joint 14, by rear steering joint 16 trailing wheel 17 is installed, the front steering joint is connected by pull bar 18 with the rear steering joint, and wherein pull bar is straight-bar; The front steering joint is articulated in rocker at the first hinge place, be articulated in pull bar at the second hinge place, the rear steering joint is articulated in rocker at the tri-joint mechanism place, is articulated in pull bar at the 4th hinge place, wherein, the distance of the first hinge and the second hinge equals the distance of tri-joint mechanism and the 4th hinge; Two front steerings joint connects by steering track rod 19, and an end of steering track rod and oil cylinder 11 is hinged, and the other end of oil cylinder is fixed in the chassis.
In above-mentioned front axle mechanism, pull bar is straight-bar, and the distance of the first hinge A1 and the second hinge A2 equals the distance of tri-joint mechanism A3 and the 4th hinge A4, the line of four hinges forms parallelogram sturcutre, then according to the parallelogram characteristic as can be known, in the steering procedure of propons, the deflection angle of its front-wheel and trailing wheel is consistent, and the path that front and back wheel turns in steering procedure is different, the path length of backgear ratio front-wheel process, then the locus circle of the turn radius of front and back wheel formation intersects, thereby has caused tire not to be equal to wearing and tearing, has reduced the service life of tire; Simultaneously, the steering cylinder of above-mentioned propons is installed on the flower wheel (being front-wheel), causes the system power loss larger; In addition, propons is fixedly mounted on the chassis by a heavy frame, and the crossing ability of paver on roughness pavement is relatively poor.
Therefore, how to avoid the tire in the propons in rotation, to wear and tear, prolong the service life of tire, save maintenance cost, need the problem of solution with regard to becoming those skilled in the art badly.
Summary of the invention
The purpose of this invention is to provide a kind of propons for rubber-tyred paver, the wearing and tearing that its tire occurs in steering procedure are less, thereby prolonged the service life of tire, saved maintenance cost.Another object of the present invention provides a kind of rubber-tyred paver that comprises above-mentioned propons.
For solving the problems of the technologies described above, the invention provides a kind of propons for rubber-tyred paver, the support body that comprises the chassis that is installed on described rubber-tyred paver, the two ends of described support body are separately installed with train, and described train comprises front steering joint and the rear steering joint that is installed on described support body and connects by pull bar; Described front steering joint is articulated in described support body, is articulated in described pull bar at the second hinge place at the first hinge place, described rear steering joint is articulated in described support body, is articulated in described pull bar at the 4th hinge place at the tri-joint mechanism place; The distance of described the first hinge and described the second hinge is less than the distance of described tri-joint mechanism and described the 4th hinge, and the turning track circle of the turning track of described front-wheel circle and described trailing wheel is concentric circles.
Preferably, described pull bar comprises the first straight section, the second straight section and connects described the first straight section and described the second straight section oblique section; Described the first straight section is articulated in described support body away from a described oblique section end by described the second hinge, and described the second straight section is articulated in described support body away from a described oblique section end by described the 4th hinge.
Preferably, described support body comprises the crossbeam that is installed on described chassis and is installed on the rocker at described crossbeam two ends that two described rockers are connected with described train respectively.
Preferably, described rocker rotates and is installed on described crossbeam, the pivot center of described rocker and the dead in line of described crossbeam or parallel.
Preferably, described rocker is installed on described crossbeam by bearing.
Preferably, described crossbeam rotates and is installed on described chassis, and the pivot center of described crossbeam is along the fore-and-aft direction setting of described rubber-tyred paver.
Preferably, described crossbeam is installed on described chassis by bearing pin, and the axis of described bearing pin is along the fore-and-aft direction setting of described rubber-tyred paver.
Preferably, the steering track rod of described propons is arranged between the two described rear steering joints.
Preferably, be separately installed with motor on the two described rear steering joints.
The present invention also provides a kind of rubber-tyred paver, comprises chassis and the propons that is arranged at described chassis, and described propons is aforesaid propons.
Propons provided by the present invention is used for rubber-tyred paver, this propons comprises support body and train, wherein, erection of frames is on the chassis of this rubber-tyred paver, and train has two, be installed on respectively the two ends of support body, train further comprises front steering joint and rear steering joint, the front-wheel of propons is installed on this front steering joint, and trailing wheel is installed on this rear steering joint, and two steering swivels all are installed on support body and connect by pull bar; The front steering joint is articulated in support body, is articulated in pull bar at the second hinge place at the first hinge place, the rear steering joint is articulated in support body, is articulated in pull bar at the 4th hinge place at the tri-joint mechanism place; The distance of the first hinge and the second hinge is less than the distance of tri-joint mechanism and the 4th hinge, and the turning track circle of the turning track of front-wheel circle and trailing wheel is concentric circles.
Like this, because the distance of the first hinge and the second hinge is less than the distance of tri-joint mechanism and the 4th hinge, this moment, the line of four hinges consisted of quadric linkage, and the line between the second hinge and the 4th hinge is crank, according to the quadric linkage characteristic as can be known, front wheel steering angle is greater than the rear-axle steering angle in the steering procedure, and in steering procedure, the turning track circle of front-wheel is concentric circles with the turning track circle of trailing wheel, the wearing and tearing that tire occurs have been reduced in steering procedure, thereby prolonged the service life of tire, saved maintenance cost.
In a kind of specific embodiment, propons provided by the present invention, its support body further comprises crossbeam and rocker, and wherein, crossbeam is installed on the chassis of paver, and rocker has two, and is installed on respectively the two ends of this crossbeam, and two rockers are connected with train respectively; Crossbeam is installed on the chassis by bearing pin, and the axis of bearing pin is along the fore-and-aft direction setting of rubber-tyred paver, and crossbeam can rotate around bearing pin under the effect of external force; Like this, propons integral body can swing by the bearing pin between crossbeam and chassis, thereby realized the swing of whole system in the certain angle of space, improved stability and the traveling comfort of paver in the roughness pavement driving process, effectively prolonged the service life of propons.
In the another kind of specific embodiment, the steering track rod of described propons provided by the present invention is arranged between the two described rear steerings joint, namely take trailing wheel as wheel flutter, steering cylinder is installed on the driving wheel (being trailing wheel), thereby has reduced the loss in efficiency of system.
Description of drawings
Fig. 1 is a kind of structural representation of typical rubber-tyred paver propons;
Fig. 2 is the structural representation of a kind of specific embodiment of propons provided by the present invention;
Fig. 3 is the analysis scheme drawing at propons provided by the present invention front-and rear-wheel steer angle when turning to;
Fig. 4 is that propons shown in Figure 2 is at the cutaway view of A-A direction;
Fig. 5 is that propons shown in Figure 2 is at the cutaway view of B-B direction;
Fig. 6 is that steering cylinder is installed in the drive wheel situation, the mechanical analysis scheme drawing of wheel flutter during the paver right steering;
Fig. 7 is that steering cylinder is installed in the drive wheel situation, the mechanical analysis scheme drawing of wheel flutter during the paver left steering;
Fig. 8 is that steering cylinder is installed in the flower wheel situation, the mechanical analysis scheme drawing of wheel flutter when the paver right steering;
Fig. 9 is that steering cylinder is installed in the flower wheel situation, the mechanical analysis scheme drawing of wheel flutter when the paver left steering.
The specific embodiment
Core of the present invention provides a kind of propons for rubber-tyred paver, and the wearing and tearing that its tire occurs in steering procedure are less, thereby has prolonged the service life of tire, has saved maintenance cost.Another core of the present invention provides a kind of rubber-tyred paver that comprises above-mentioned propons.
In order to make those skilled in the art person understand better the present invention program, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 2 to Fig. 5, Fig. 2 is the structural representation of a kind of specific embodiment of propons provided by the present invention; Fig. 3 is the analysis scheme drawing at propons provided by the present invention front-and rear-wheel steer angle when turning to; Fig. 4 is that propons shown in Figure 2 is at the cutaway view of A-A direction; Fig. 5 is that propons shown in Figure 2 is at the cutaway view of B-B direction.
Propons provided by the present invention is used for rubber-tyred paver, this propons comprises support body and train, wherein, erection of frames is on the chassis of this rubber-tyred paver, and train has two, be installed on respectively the two ends of support body, train further comprises front steering joint 33 and rear steering joint 34, the front-wheel 38 of propons is installed on this front steering joint 33, and trailing wheel 39 is installed on these rear steering joint 34, two steering swivels and all is installed on support body and passes through pull bar 32 connections; Front steering joint 33 is articulated in support body, is articulated in pull bar 32 at the second hinge B2 place at the first hinge B1 place, rear steering saves and 34 is articulated in support body at tri-joint mechanism B3 place, is articulated in pull bar 32 at the 4th hinge B4 place; The distance of the first hinge B1 and the second hinge B2 is less than the distance of tri-joint mechanism B3 and the 4th hinge B4, and the turning track of front-wheel 38 is round and the turning track circle of trailing wheel 39 is concentric circles, and the direction of arrow is the working direction of paver among Fig. 2.
It is to be noted, under the prerequisite of distance less than the distance of tri-joint mechanism B3 and the 4th hinge B4 of the first hinge B1 and the second hinge B2, guarantee that the turning track circle of front-wheel 38 and the turning track circle of trailing wheel 39 are concentric circles, need to be according to front steering joint 33 and the actual distance of rear steering joint 34 on working direction of homonymy, and the concrete numerical value of the concrete numerical value of first hinge B1 and the second hinge B2 distance and tri-joint mechanism B3 and the 4th hinge B4 distance is determined, the paver of different model is because the front steering joint 33 of homonymy and the actual distance of rear steering joint 34 on working direction, satisfying the turning track of front-wheel 38 justifies when justifying as concentric circles with the turning track of trailing wheel 39, the concrete numerical value of distance can pass through calculative determination between each hinge, is not construed as limiting at this.
Ordinal numbers such as " first, second, third, fourth " described in the literary composition is in order to distinguish the different parts of same names, only for convenience, not represent certain order, more should not be construed any restriction.
The structure of above-mentioned pull bar 32 can be specially oblique section that comprises the first straight section, the second straight section and connect described the first straight section and described the second straight section; Described the first straight section is articulated in described support body away from a described oblique section end by described the second hinge B2, and described the second straight section is articulated in described support body away from a described oblique section end by described the 4th hinge B4; Form by non-straight-bar realizes the distance of the first hinge B1 and the second hinge B2 less than the distance of tri-joint mechanism B3 and the 4th hinge B4, and structure is comparatively simple, and stability better.
Above-mentioned oblique section gradient should be determined according to the length of two straight sections and the parameters such as actual distance between front steering joint 33 and the rear steering joint 34, not do restriction at this.
Theoretically, pull bar 32 is not limited to the said structure form, as long as can connect two steering swivels of homonymy, and guarantee the distance of the first hinge B1 and the second hinge B2, distance less than tri-joint mechanism B3 and the 4th hinge B4 gets final product, for example, pull bar 32 also can be straight-bar, and integral inclination is arranged between the front steering joint 33 and rear steering joint 34 of homonymy.
Like this, because the distance of the first hinge B1 and the second hinge B2 is less than the distance of tri-joint mechanism B3 and the 4th hinge B4, this moment, the line of four hinges consisted of quadric linkage, and the line between the second hinge B2 and the 4th hinge B4 is crank, according to the quadric linkage characteristic as can be known, front-wheel 38 deflection angle α are greater than trailing wheel 39 deflection angle β in the steering procedure, and in steering procedure, the turning track circle of front-wheel is concentric circles with the turning track circle of trailing wheel 39, be that (T1 represents front-wheel 38 to the circle that forms of turn radius among Fig. 2 with one heart, T2 represents trailing wheel 39, R represents turn radius), thereby reduced the wearing and tearing that tire occurs in steering procedure, prolonged the service life of tire, saved maintenance cost.
In a kind of specific embodiment, above-mentioned support body comprises crossbeam 31 and rocker 35, and wherein, crossbeam 31 is installed on the chassis, and rocker 35 has two, is installed on respectively the two ends of crossbeam 31, and two rockers 35 are connected with train respectively; Like this, in manufacturing process, can process respectively crossbeam 31 and rocker 35, refill and be made into support body, thereby simplified the course of processing.
Theoretically, between also be not limited to said structure, support body also can be the structure of integral type.
Above-mentioned rocker 35 can rotate and be installed on crossbeam 31, the dead in line of the pivot center of rocker 35 and crossbeam 31 or parallel; Like this, rocker 35 rotates before and after can rotating around it axis with respect to crossbeam 31, thereby has realized that wheel ties up to the swing in the certain angle of space, has improved stability and the traveling comfort of paver in the roughness pavement driving process.
Rocker 35 can be installed on crossbeam 31 by bearing, particularly, mounting hole is offered in appropriate location at rocker 35, the outer ring of bearing is fixed in the mounting hole, crossbeam 31 passes bearing, and be fixed in the inner ring of bearing, thereby realize that by the relative motion between the bearing enclose rocker 35 is with respect to the swing of crossbeam 31; Apparently, being rotationally connected between rocker 35 and the crossbeam 31 is not limited to bearing, rotates with respect to crossbeam 31 rotation axis that rotates as long as can realize rocker 35, for example, also can realize being rotationally connected by the mode of bearing pin connection.
Support body further comprises crossbeam 31 and rocker 35, and wherein, crossbeam 31 is installed on the chassis of paver, and rocker 35 has two, and is installed on respectively the two ends of this crossbeam 31, and two rockers 35 are connected with train respectively; Crossbeam 31 is installed on the chassis by bearing pin, and the axis of bearing pin is along the fore-and-aft direction setting of rubber-tyred paver, and crossbeam 31 can rotate around bearing pin under the effect of external force; Like this, propons integral body can swing by the bearing pin between crossbeam 31 and chassis, thereby realized the swing of whole system in the certain angle of space, improved stability and the traveling comfort of paver in the roughness pavement driving process, effectively prolonged the service life of propons.
Above-mentioned crossbeam 31 also is not limited to the mode that connects by bearing pin and rotates and be installed on the chassis, theoretically, as long as can realize that crossbeam 31 rotates around it axis with respect to the chassis and rotates, be rotationally connected such as realizations such as transmission gear can between be set.
In the another kind of specific embodiment, the steering track rod 36 of described propons provided by the present invention is arranged between the two described rear steering joints 34, namely take trailing wheel 39 as wheel flutter, steering cylinder is installed on the driving wheel (being trailing wheel 39), thereby has reduced the loss in efficiency of system.
In the above-mentioned specific embodiment, because of rubber-tyred paver ground adhesion value poor, paving operation is not steady, in order to make it more have good adhesion value near the crawler type paver, namely increase a pair of motor 37 auxiliary power is provided so in front bridge system, increase pair of driving wheels, at this moment, steering cylinder has two kinds of mounting meanss, a kind of being installed on the pure wheel flutter, another kind are installed in to turn to and add on the auxiliary drive wheels, and the below analyzes with regard to the stressing conditions of two kinds of mounting meanss.
When the steering cylinder point of application was installed on the drive wheel, as shown in Figure 6, when the paver right steering, oil cylinder was to tire action force F1, and ground drives forwards power F2, drive torque M2 and M2=F2*L2 in the face of tire.F1 equivalence to the tire center F1-1 of rotating shaft O1 conllinear, by strength of material knowledge as can be known: F1=F1-1 adds moment of rotation M1 and M1=F1*L1.Drive wheel integral-rotation moment is M=M1+M2, and S. A. O1 is not subjected to the effect of fore-and-aft direction shearing stress, turns to smooth and easy; As shown in Figure 7, when the paver left steering, drive wheel integral-rotation moment is M=M1-M2, only have as M1 during greater than M2, be oil cylinder tensile force f 1 when enough large, system could realize turning to, but adds and subtracts in S. A. O1 one side because of M1 and M2, therefore S. A. O1 still is not subjected to the effect of fore-and-aft direction shearing stress, turns to more smooth and easy.
When steering cylinder is installed in the flower wheel position, as shown in Figure 8, when the paver right steering, drive wheel integral-rotation moment is that M=M3+M2(M3=η * M1 η is the moment loss coefficient), though M3 and M2 are in S. A. O1 both sides, but the moment of rotation direction is identical, so S. A. O1 torque suspension effect be not subjected to the effect of fore-and-aft direction shearing stress, turns to smooth and easy; As shown in Figure 9, during the paver left steering, drive wheel integral-rotation moment is M=M3-M2, only has as M3 during greater than M2, when namely Drawbar Pull F is enough large, system could realize turning to, but because M3 and M2 add and subtract in S. A. O1 both sides, thus S. A. O1 not only the torque suspension effect also be subjected to the effect of fore-and-aft direction shearing stress, the generation of fore-and-aft direction shearing stress not only makes system produce the service life that parasitic horsepower shortens S. A. O1 simultaneously, turn to have some setbacks, be prone to clamping stagnation; As from the foregoing, the stress performance when the steering cylinder point of application is installed on the drive wheel is better, therefore, when increasing auxiliary power, motor 37 is installed on the two rear steerings joint 34, the effect when being drive wheel with seasonal trailing wheel 39 is better, certainly, other forms of arrangement also allows.
Except above-mentioned propons, the present invention also provides a kind of rubber-tyred paver that comprises above-mentioned propons, and other each several part structures of this rubber-tyred paver please refer to prior art, do not repeat them here.
More than a kind of rubber-tyred paver provided by the present invention and propons thereof are described in detail.Used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (10)
1. propons that is used for rubber-tyred paver, the support body that comprises the chassis that is installed on described rubber-tyred paver, the two ends of described support body are separately installed with train, and described train comprises front steering joint (33) and the rear steering joint (34) that is installed on described support body and connects by pull bar (32); Described front steering joint (33) is articulated in described support body, is articulated in described pull bar (32) at the second hinge place at the first hinge place, described rear steering joint (34) is articulated in described support body, is articulated in described pull bar (32) at the 4th hinge place at the tri-joint mechanism place; It is characterized in that the distance of described the first hinge and described the second hinge is less than the distance of described tri-joint mechanism and described the 4th hinge, and the turning track circle of the turning track of described front-wheel circle and described trailing wheel is concentric circles.
2. the propons for rubber-tyred paver according to claim 1 is characterized in that, described pull bar (32) comprises the first straight section, the second straight section and connects described the first straight section and described the second straight section oblique section; Described the first straight section is articulated in described support body away from a described oblique section end by described the second hinge, and described the second straight section is articulated in described support body away from a described oblique section end by described the 4th hinge.
3. the propons for rubber-tyred paver according to claim 1, it is characterized in that, described support body comprises the crossbeam (31) that is installed on described chassis and is installed on the rocker (35) at described crossbeam (31) two ends that two described rockers (35) are connected with described train respectively.
4. the propons for rubber-tyred paver according to claim 3 is characterized in that, described rocker (35) rotates and to be installed on described crossbeam (31), the dead in line of the pivot center of described rocker (35) and described crossbeam (31) or parallel.
5. the propons for rubber-tyred paver according to claim 4 is characterized in that, described rocker (35) is installed on described crossbeam (31) by bearing.
6. the propons for rubber-tyred paver according to claim 3 is characterized in that, described crossbeam (31) rotates and is installed on described chassis, and the pivot center of described crossbeam (31) is along the fore-and-aft direction setting of described rubber-tyred paver.
7. the propons for rubber-tyred paver according to claim 6 is characterized in that, described crossbeam (31) is installed on described chassis by bearing pin, and the axis of described bearing pin is along the fore-and-aft direction setting of described rubber-tyred paver.
8. according to claim 1 to 7 each described propons for rubber-tyred paver, it is characterized in that the steering track rod of described propons (36) is arranged between the two described rear steering joints (34).
9. the propons for rubber-tyred paver according to claim 8 is characterized in that, is separately installed with motor (37) on the two described rear steering joints (34).
10. a rubber-tyred paver comprises chassis and the propons that is arranged at described chassis, it is characterized in that described propons is such as each described propons of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210552580.6A CN102975769B (en) | 2012-12-18 | 2012-12-18 | A kind of rubber-tyred paver and propons thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210552580.6A CN102975769B (en) | 2012-12-18 | 2012-12-18 | A kind of rubber-tyred paver and propons thereof |
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| CN102975769A true CN102975769A (en) | 2013-03-20 |
| CN102975769B CN102975769B (en) | 2015-08-19 |
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| CN201210552580.6A Active CN102975769B (en) | 2012-12-18 | 2012-12-18 | A kind of rubber-tyred paver and propons thereof |
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| CN104401396A (en) * | 2014-10-28 | 2015-03-11 | 北京北方车辆集团有限公司 | Vehicle chassis structure |
| CN104594161A (en) * | 2014-11-28 | 2015-05-06 | 山推工程机械股份有限公司 | Tire spreader and walking control system thereof |
| CN106275069A (en) * | 2015-05-27 | 2017-01-04 | 比亚迪股份有限公司 | Wheel steering mechanism and vehicle |
| CN108163046A (en) * | 2018-01-18 | 2018-06-15 | 宁波市鄞州逐新贸易有限公司 | A kind of driven transfer of trailing wheel |
| CN114885669A (en) * | 2022-05-06 | 2022-08-12 | 辽宁辽拓大益农业机械有限公司 | Eight-drive four-steering corn harvester |
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| CN2534224Y (en) * | 2002-02-28 | 2003-02-05 | 南文辉 | Supporting wheel steering mechanism for push type double-feeding inlet stable material paver |
| US20120090909A1 (en) * | 2010-10-13 | 2012-04-19 | Wirtgen Gmbh | Self-Propelled Civil Engineering Machine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104401396A (en) * | 2014-10-28 | 2015-03-11 | 北京北方车辆集团有限公司 | Vehicle chassis structure |
| CN104594161A (en) * | 2014-11-28 | 2015-05-06 | 山推工程机械股份有限公司 | Tire spreader and walking control system thereof |
| CN104594161B (en) * | 2014-11-28 | 2016-09-14 | 山推工程机械股份有限公司 | Tire paver and traveling control system thereof |
| CN106275069A (en) * | 2015-05-27 | 2017-01-04 | 比亚迪股份有限公司 | Wheel steering mechanism and vehicle |
| CN106275069B (en) * | 2015-05-27 | 2018-12-21 | 比亚迪股份有限公司 | Wheel steering mechanism and vehicle |
| CN108163046A (en) * | 2018-01-18 | 2018-06-15 | 宁波市鄞州逐新贸易有限公司 | A kind of driven transfer of trailing wheel |
| CN114885669A (en) * | 2022-05-06 | 2022-08-12 | 辽宁辽拓大益农业机械有限公司 | Eight-drive four-steering corn harvester |
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| CN102975769B (en) | 2015-08-19 |
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