CN110356470A - Pivot stud engineering machinery - Google Patents
Pivot stud engineering machinery Download PDFInfo
- Publication number
- CN110356470A CN110356470A CN201910688899.3A CN201910688899A CN110356470A CN 110356470 A CN110356470 A CN 110356470A CN 201910688899 A CN201910688899 A CN 201910688899A CN 110356470 A CN110356470 A CN 110356470A
- Authority
- CN
- China
- Prior art keywords
- frame
- front frame
- sides
- axle
- articulated body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D12/00—Steering specially adapted for vehicles operating in tandem or having pivotally connected frames
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/18—Understructures, i.e. chassis frame on which a vehicle body may be mounted characterised by the vehicle type and not provided for in groups B62D21/02 - B62D21/17
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/18—Steering knuckles; King pins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/20—Links, e.g. track rods
Abstract
The present invention announces a kind of pivot stud engineering machinery, belongs to technical field of engineering machinery.Pass through central compound hinged mechanism connection between front frame, Rear frame；Central compound hinged mechanism includes articulated body, and articulated body is hinged by pin shaft I and front frame, and the diameter of axle and Rear frame are rotatablely connected on rear side of articulated body；Articulation steering oil cylinder between articulated body two sides and front frame two sides；Rear driving axle is fixedly mounted in Rear frame, rear driving axle two sides pass through knuckle assembly fifth wheel side mechanism；Hinged rod assembly between rear driving axle two sides and front frame two sides.It is hinged using compound hinged mechanism between forward and backward two vehicle frame of the present invention, simplify design and assembling process, saves space, and simple and reliable；Drive axle mounting height is significantly reduced, to reduce complete machine height of center of mass, improves complete machine stability；Rear-wheel can pivot stud, complete machine structure layout it is more compact, flexible, reliable, ground passability is more preferable, improves adaptability for working condition.
Description
Technical field
The present invention relates to technical field of engineering machinery, in particular to a kind of pivot stud engineering machinery.
Background technique
The hinged industrial wheeled equipment of existing forward and backward vehicle frame, by taking loading machine as an example, rear driving axle and Rear frame are generally logical
Swinging frame (pivot device) assembly connection is crossed, to realize complete machine swinging up and down in the different road travelings of height；Although
It can be realized basic function, but still remain following defects:
1, design and assembly are complex, and reliability is lower, especially drive axle center pendulum dynamic formula structure, encounters the road that is uneven
When face, forward and backward vehicle frame needs to swing up and down around swinging frame (pivot device) pin shaft together, and the operation for increasing loading machine is strong
Degree, reliability be not high；
2, more demanding to the installation space of Rear frame, complete machine height etc.；
3, turning radius is increased by the steering that forward and backward vehicle frame is hingedly realized, causes to turn to the defects of inflexible；
4, when encountering the relatively narrow road surface of road, loading machine in stays may pass through, and make loading machine use scope by the very day of one's doom
System.
Summary of the invention
To solve the problems of the above-mentioned prior art, the present invention provides a kind of pivot stud engineering machinery, by it is preceding,
Design compound hinged mechanism between two vehicle frames afterwards, realizes forward and backward two vehicle frames left-right rotation and swings up and down, what cooperation can turn to
Drive axle greatly reduces the turning radius of engineering machinery.
The invention is realized by the following technical scheme: a kind of pivot stud engineering machinery, including front frame, Rear frame, institute
It states between front frame, Rear frame through central compound hinged mechanism connection；The center compound hinged mechanism includes articulated body, hinge
Junctor passes through the pin shaft I being vertically arranged and front frame is hinged；There is the horizontal diameter of axle to extend back, the diameter of axle on rear side of the articulated body
It is rotatablely connected with Rear frame；Steering cylinder has been respectively articulated between the articulated body two sides and front frame two sides；The Rear frame
On be fixedly installed with rear driving axle, rear driving axle two sides pass through knuckle assembly fifth wheel side mechanism respectively；The rear driving axle
Rod assembly has been respectively articulated between two sides and front frame two sides.
It is further: the articulated body is provided with the through-hole being vertically arranged, and the upper and lower side of through-hole is provided with inner stopper；Institute
State pin shaft I altogether there are two, in the inner stopper of the inner end pin shaft I cooperation insertion articulated body through-hole outer end, the inner end pin shaft I and articulated body are logical
Bearing I is installed between hole；Articulated slab in the front frame being arranged symmetrically, hinged under front frame is fixed on rear side of the front frame
Plate, the pin shaft I of upper and lower sides are fixedly connected on articulated slab in front frame, under front frame on articulated slab by the way that bolt I is corresponding.
Rear frame vertical plate is fixed on front side of the Rear frame, Rear frame vertical plate center has sleeve；On rear side of the articulated body
Diameter of axle engagement sleeves in the Rear frame vertical plate sleeve, bearing I I is installed between the articulated body diameter of axle and Rear frame vertical plate sleeve；
Articulated body diameter of axle end face is fixedly connected with bearing (ball) cover by bolt II, and bearing (ball) cover periphery is pressed in bearing I I outer end face.
The articulated body two sides are fixed with rear steering ear mount, and front frame two sides are fixed with front steering ear mount；The steering oil
Cylinder both ends are hinged on corresponding rear steering ear mount, in front steering ear mount, and two steering cylinders are arranged symmetrically.
Front frame rear portion two sides are fixed with front frame limited block, and two front frame limited blocks are arranged symmetrically；The rear car
Frame front part sides are fixed with Rear frame limited block, and two Rear frame limited blocks are arranged symmetrically；The articulated body two sides are fixed with combination
Limited block, two combination limited blocks are arranged symmetrically；There is the front limit opposite with front frame limited block on front side of the combination limited block
Face, combination limited block upside have the upper limit plane opposite with Rear frame limited block.
The knuckle assembly includes knuckle outer housing and knuckle inner housing, knuckle outer housing and knuckle inner casing
The pin shaft II being arranged symmetrically between body by two is hinged；Outer half is equipped with inside the knuckle outer housing and knuckle inner housing
Axis, inner shaft and cross axle；Hinged with outer semiaxis among the cross axle, cross axle both ends and inner shaft are hinged；Half in described
Axis and rear driving axle export axis connection, and outer semiaxis passes through knuckle outer housing and connect with the Lun Bian mechanism.
The two pin shaft II or more are coaxially arranged, and are fixedly connected by bolt with knuckle outer housing upper and lower ends.
Pull rod ear mount is fixed on the knuckle outer housing, pull rod ear mount is connected by bulb component and rod assembly rear end
It connects；Two rod assemblies are arranged symmetrically.
Compared with prior art, the beneficial effects of the present invention are:
1, hinged using compound hinged mechanism between forward and backward two vehicle frame, the pendulum between drive axle and Rear frame is eliminated with this
Moving frame (pivot device), drive axle can be directly mounted in Rear frame, simplified design and assembling process, saved space,
And it is simple and reliable；
2, compound hinged mechanism significantly reduces drive axle mounting height, especially height of chassis above ground, to reduce complete machine mass center
Highly, complete machine stability is improved；
3, compound hinged mechanism is especially suitable for the hinged industrial wheeled equipment of small, compact, make complete machine structure layout it is more compact,
Flexibly, reliably, while mass center is lower, complete machine stability is higher, and ground passability is more preferable, improves adaptability for working condition；
4, rear-wheel can pivot stud, it is more flexible, substantially reduce the turning radius of engineering machinery, it is wider to adapt to condition range.
Detailed description of the invention
Fig. 1 is top view of the present invention；
Fig. 2 is left view of the present invention；
Fig. 3 is enlarged drawing at central compound hinged mechanism in this Fig. 2；
Fig. 4 is the three-dimensional figure at central compound hinged mechanism position of the invention；
Fig. 5 is rear driving axle structural schematic diagram of the present invention；
Fig. 6 is enlarged drawing at knuckle assembly in Fig. 5；
Fig. 7 a to 7c is the straight each operating condition schematic diagram in road surface of the present invention；
Fig. 8 a to 8f is each operating condition schematic diagram of uneven road surface of the present invention；
In figure: 1, front frame, 2, steering cylinder, 3, front frame limited block, 4, combination limited block, 5, Rear frame limited block, 6, drawing
Bar assembly, 7, rear driving axle, 8, knuckle assembly, 9, Rear frame, 10, central compound hinged mechanism, 11, rear steering ear mount, 12,
Front steering ear mount, 13, articulated slab in front frame, 14, articulated slab under front frame, 15, Rear frame vertical plate, 16, pin shaft I, 17, bearing
I, 18, bolt I, 19, articulated body, 20, bolt II, 21, bearing (ball) cover, 22, bearing I I, 23, inner shaft, 24, cross axle, 25,
Knuckle inner housing, 26, pin shaft II, 27, outer semiaxis, 28, pull rod ear mount, 29, bulb component, 30, knuckle outer housing.
Specific embodiment
It is a specific embodiment of the invention below, the present invention will be further described with reference to the accompanying drawings.
In conjunction with shown in Fig. 1 to Fig. 4, a kind of pivot stud engineering machinery is compound by center between front frame 1, Rear frame 9
Linkwork 10 connects, and installs front driving axle in front frame 1.Central compound hinged mechanism 10 includes articulated body 19, articulated body 19
It is respectively articulated with front frame 1, Rear frame 9, rotate forward and backward vehicle frame can not only mutually around articulated body 19 but also swingable.
Specifically, central compound hinged mechanism 10:
Articulated body 19 is provided with the through-hole being vertically arranged, and the upper and lower side of through-hole is provided with inner stopper, and through-hole is symmetrical above and below.Pin shaft
The inner end I16 has male half coupling, and the cooperation of the inner end pin shaft I16 is inserted into the inner stopper of 19 through-hole outer end of articulated body, and in pin shaft I16
Bearing I 17 is installed between end and 19 through-hole of articulated body.Articulated slab in the front frame being arranged symmetrically is fixed on rear side of front frame 1
13, articulated slab 14 under front frame, the pin shaft I16 of upper and lower sides by bolt I18 it is corresponding be fixedly connected on articulated slab 13 in front frame,
Under front frame on articulated slab 14；Realize the mutual rotation of forward and backward vehicle frame；
Rear frame vertical plate 15 is fixed on front side of Rear frame 9,15 center of Rear frame vertical plate has sleeve.There is water on rear side of articulated body 19
The flat diameter of axle to extend back, the diameter of axle engagement sleeves of 19 rear side of articulated body are in 15 sleeve of Rear frame vertical plate, 19 diameter of axle of articulated body
Bearing I I22 is installed between 15 sleeve of Rear frame vertical plate.19 diameter of axle end face of articulated body is fixedly connected with axis by bolt II20
Socket end lid 21,21 periphery of bearing (ball) cover are pressed in bearing I I22 outer end face, limit the lateral displacement of articulated body；Realize forward and backward vehicle frame
Mutual swing.
19 two sides of articulated body are fixed with rear steering ear mount 11, and 1 two sides of front frame are fixed with front steering ear mount 12.Steering cylinder
2 both ends are hinged on corresponding rear steering ear mount 11, in front steering ear mount 12, and two steering cylinders 2 are arranged symmetrically.
1 rear portion two sides of front frame are fixed with front frame limited block 3, and two front frame limited blocks 3 are arranged symmetrically.Before Rear frame 9
Portion two sides are fixed with Rear frame limited block 5, and two Rear frame limited blocks 5 are arranged symmetrically.19 two sides of articulated body are fixed with combination limit
Block 4, two combination limited blocks 4 are arranged symmetrically.Combining has the front limit face opposite with front frame limited block 3, group on front side of limited block 4
Closing has the upper limit plane opposite with Rear frame limited block 5 on the upside of limited block 4.Rubber coating is done at limited block faying face, so as to
It is protected and is buffered.
In conjunction with rear driving axle 7 shown in Fig. 5 and Fig. 6, is fixedly mounted in Rear frame 9,7 two sides of rear driving axle pass through respectively to be turned
To section 8 fifth wheel side mechanism of assembly.
Specifically, knuckle assembly 8:
Knuckle inner housing 25 is fixedly connected with axle housing, and 25 upper and lower ends of knuckle inner housing are rotatablely installed pin shaft II26, two pins
Axis II26 or more is coaxially arranged.The outer end of pin shaft II26 is fixedly connected by bolt with 30 upper and lower ends of knuckle outer housing, is turned
It is fixedly connected to section outer housing 30 with wheel side support shaft.Outer semiaxis is set inside knuckle outer housing 30 and knuckle inner housing 25
27, inner shaft 23 and cross axle 24,24 centre of cross axle and outer semiaxis 27 are hinged, and 24 both ends of cross axle and inner shaft 23 are hinged.
Inner shaft 23 and rear driving axle 7 export axis connection, and outer semiaxis 27 passes through knuckle outer housing 30 and connect with the Lun Bian mechanism.
Pull rod ear mount 28 is fixed on knuckle outer housing 30, pull rod ear mount 28 passes through bulb component 29 and rod assembly 6
Rear end connection；6 front end of rod assembly is connect with 1 side of front frame also by bulb component 29, and two rod assemblies 6 are arranged symmetrically.
Left and right symmetrical two rod assembly constitutes quadrangular mechanism by bulb component, by the deformation of quadrangular mechanism, after realizing two
Wheel simultaneously do parallel swing, make to turn to it is more flexible, and reduction turning radius.
In the present embodiment
Rear driving axle is steerable drive axle, and front driving axle is common drive axle, and equally may be designed as front driving axle is that can turn
To drive axle, rear driving axle is common drive axle.
The course of work:
In conjunction with shown in Fig. 7 a to 7c,
Straight road surface straight-line travelling (static) state:
Forward and backward vehicle bridge is in same level at this time, and neither mutually rotation, does not also swing mutually between front frame 1, Rear frame 2；
The quadrangular mechanism of two rod assemblies 6 composition is not deformed at this time, so that rear-wheel does not deflect, forward and backward wheel is same
On straight line.
Straight road surface steering procedure:
When needing to turn to, steering wheel is rotated, is stretched out in two steering cylinders, 2 side piston rod, other side piston rod contraction
Under, front frame 1 passes through the effect of pin shaft I16, realizes the rotary motion of certain angle in the horizontal plane around articulated body 19；
At the same time, under the action of flexural pivot component 29, rod assembly 6 drives knuckle assembly 8, does two rear-wheels in parallel always
The swing of certain angle；
When front frame limited block 3 is with fitting before limited block 4 is combined, front frame 1 and wheel no longer rotate, movement
Reach the limit of position；After steering, steering disk is rotated counterclockwise, straight-line travelling (static) state can be restored to.
In conjunction with shown in 8a to 8f,
Uneven road surface straight-line travelling (static) state:
When traveling is when (static) is walked on rugged road surface, a certain vehicle frame can be done under bearing I I22 effect around another vehicle frame
Certain angle is swung up and down, to guarantee that complete machine moves in a straight line (static), when combination limited block 4 above and Rear frame limited block
When 5 fitting below, reach full swing angle.
Uneven road surface steering procedure:
When being turned on rugged road surface, except carry out it is above-mentioned swing up and down outer, rotation steering wheel can equally be carried out and be put down
The consistent movement of forthright face steering procedure.
The present invention is described by way of example above, but the present invention is not limited to above-mentioned specific embodiment, all to be based on
Any change or deformation that the present invention is done are fallen within the scope of the claimed invention.
Claims (8)
1. a kind of pivot stud engineering machinery, including front frame (1), Rear frame (9), it is characterised in that:
It is connected between the front frame (1), Rear frame (9) by central compound hinged mechanism (10)；
The center compound hinged mechanism (10) includes articulated body (19), and articulated body (19) passes through the pin shaft I(16 being vertically arranged)
It is hinged with front frame (1)；There is the horizontal diameter of axle to extend back, the diameter of axle and Rear frame (9) rotate on rear side of the articulated body (19)
Connection；
Steering cylinder (2) have been respectively articulated between articulated body (19) two sides and front frame (1) two sides；
It is fixedly installed with rear driving axle (7) on the Rear frame (9), rear driving axle (7) two sides pass through knuckle assembly (8) respectively
Fifth wheel side mechanism；
Rod assembly (6) have been respectively articulated between rear driving axle (7) two sides and front frame (1) two sides.
2. pivot stud engineering machinery according to claim 1, it is characterised in that: the articulated body (19) is provided with one and erects
To the through-hole of arrangement, the upper and lower side of through-hole is provided with inner stopper；The pin shaft I(16) altogether there are two, pin shaft I(16) inner end cooperation insert
In the inner stopper for entering articulated body (19) through-hole outer end, pin shaft I(16) bearing I is installed between inner end and articulated body (19) through-hole
(17)；It is fixed with articulated slab (14) under articulated slab in the front frame being arranged symmetrically (13), front frame on rear side of the front frame (1),
The pin shaft I(16 of upper and lower sides) pass through bolt I(18) correspond to be fixedly connected under articulated slab in front frame (13), front frame and cut with scissors
On fishplate bar (14).
3. pivot stud engineering machinery according to claim 1, it is characterised in that: be fixed on front side of the Rear frame (9)
Rear frame vertical plate (15), Rear frame vertical plate (15) center have sleeve；Diameter of axle engagement sleeves on rear side of the articulated body (19) are mounted in
In Rear frame vertical plate (15) sleeve, bearing I I(22 is installed between articulated body (19) diameter of axle and Rear frame vertical plate (15) sleeve)；
Articulated body (19) diameter of axle end face passes through bolt II(20) it is fixedly connected with bearing (ball) cover (21), bearing (ball) cover (21) periphery pressure
In bearing I I(22) outer end face.
4. pivot stud engineering machinery according to claim 1, it is characterised in that: articulated body (19) two sides are fixed with
Rear steering ear mount (11), front frame (1) two sides are fixed with front steering ear mount (12)；Steering cylinder (2) both ends are hinged on pair
In the rear steering ear mount (11) answered, front steering ear mount (12), two steering cylinders (2) are arranged symmetrically.
5. pivot stud engineering machinery according to claim 1, it is characterised in that: front frame (1) the rear portion two sides are solid
Surely have front frame limited block (3), two front frame limited blocks (3) are arranged symmetrically；Rear frame (9) front part sides are fixed with rear car
Frame limited block (5), two Rear frame limited blocks (5) are arranged symmetrically；Articulated body (19) two sides are fixed with combination limited block (4),
Two combinations limited block (4) are arranged symmetrically；There is the preceding limit opposite with front frame limited block (3) on front side of combination limited block (4)
Plane, combination limited block (4) upside have the upper limit plane opposite with Rear frame limited block (5).
6. pivot stud engineering machinery according to claim 1, it is characterised in that: the knuckle assembly (8) includes turning
To section outer housing (30) and knuckle inner housing (25), pass through two between knuckle outer housing (30) and knuckle inner housing (25)
The pin shaft II(26 being arranged symmetrically) it is hinged；Outer semiaxis is equipped with inside the knuckle outer housing (30) and knuckle inner housing (25)
(27), inner shaft (23) and cross axle (24)；Among the cross axle (24) hingedly with outer semiaxis (27), cross axle (24) both ends
It is hinged with inner shaft (23)；The inner shaft (23) and rear driving axle (7) export axis connection, and outer semiaxis (27) passes through outside knuckle
Shell (30) is simultaneously connect with the Lun Bian mechanism.
7. pivot stud engineering machinery according to claim 6, it is characterised in that: the two pin shaft II(26) it is coaxial up and down
Arrangement, and be fixedly connected by bolt with knuckle outer housing (30) upper and lower ends.
8. pivot stud engineering machinery according to claim 6, it is characterised in that: solid on the knuckle outer housing (30)
Surely have pull rod ear mount (28), pull rod ear mount (28) is connect by bulb component (29) with rod assembly (6) rear end；Two rod assemblies
(6) it is arranged symmetrically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910688899.3A CN110356470A (en) | 2019-07-29 | 2019-07-29 | Pivot stud engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910688899.3A CN110356470A (en) | 2019-07-29 | 2019-07-29 | Pivot stud engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110356470A true CN110356470A (en) | 2019-10-22 |
Family
ID=68222658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910688899.3A Pending CN110356470A (en) | 2019-07-29 | 2019-07-29 | Pivot stud engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110356470A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110803215A (en) * | 2019-11-26 | 2020-02-18 | 杨善美 | High-strength automobile intermediate shaft |
| CN111845932A (en) * | 2020-07-31 | 2020-10-30 | 徐工集团工程机械股份有限公司科技分公司 | Engineering machine adopting composite steering mechanism |
| CN111845931A (en) * | 2020-07-09 | 2020-10-30 | 江苏汇智高端工程机械创新中心有限公司 | Multi-mode composite steering chassis and engineering machinery vehicle |
| CN111997114A (en) * | 2020-09-28 | 2020-11-27 | 徐工集团工程机械股份有限公司科技分公司 | Angle-adjustable translational lifting machine |
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| DE10100775A1 (en) * | 2001-01-10 | 2002-07-11 | Deere & Co | Steerable axles for articulated vehicle are joined by vertical hinge axle and allowed to pivot relative to each other by controller and steerable axles are likewise under influence of controller |
| CN201193049Y (en) * | 2008-04-11 | 2009-02-11 | 衣成双 | Loading apparatus with rear-wheel steering |
| CN201241348Y (en) * | 2008-07-04 | 2009-05-20 | 邱兴东 | Hinge rotary type steering mechanism |
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| CN202147723U (en) * | 2011-05-18 | 2012-02-22 | 天津市政公路设备工程有限公司 | Integral swinging rear frame for all-terrain forklift |
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| CN102917942A (en) * | 2010-05-27 | 2013-02-06 | 日立建机株式会社 | Wheel loader |
| CN108749918A (en) * | 2018-07-24 | 2018-11-06 | 湖南田野现代智能装备有限公司 | A kind of preceding bridge deflection plus composite turning device of hingedly bowing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6459201A (en) * | 1987-08-31 | 1989-03-06 | Nok Corp | Flexible optical waveguide circuit |
| DE10100775A1 (en) * | 2001-01-10 | 2002-07-11 | Deere & Co | Steerable axles for articulated vehicle are joined by vertical hinge axle and allowed to pivot relative to each other by controller and steerable axles are likewise under influence of controller |
| CN201193049Y (en) * | 2008-04-11 | 2009-02-11 | 衣成双 | Loading apparatus with rear-wheel steering |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110803215A (en) * | 2019-11-26 | 2020-02-18 | 杨善美 | High-strength automobile intermediate shaft |
| CN110803215B (en) * | 2019-11-26 | 2022-02-15 | 浙江鸿运实业有限公司 | High-strength automobile intermediate shaft |
| CN111845931A (en) * | 2020-07-09 | 2020-10-30 | 江苏汇智高端工程机械创新中心有限公司 | Multi-mode composite steering chassis and engineering machinery vehicle |
| CN111845931B (en) * | 2020-07-09 | 2021-07-30 | 江苏汇智高端工程机械创新中心有限公司 | Multi-mode composite steering chassis and engineering machinery vehicle |
| CN111845932A (en) * | 2020-07-31 | 2020-10-30 | 徐工集团工程机械股份有限公司科技分公司 | Engineering machine adopting composite steering mechanism |
| CN111997114A (en) * | 2020-09-28 | 2020-11-27 | 徐工集团工程机械股份有限公司科技分公司 | Angle-adjustable translational lifting machine |
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Application publication date: 20191022 |