CN106114676A - A kind of chassis of vehicle - Google Patents

A kind of chassis of vehicle Download PDF

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Publication number
CN106114676A
CN106114676A CN201610638005.6A CN201610638005A CN106114676A CN 106114676 A CN106114676 A CN 106114676A CN 201610638005 A CN201610638005 A CN 201610638005A CN 106114676 A CN106114676 A CN 106114676A
Authority
CN
China
Prior art keywords
supporting leg
vehicle
connecting rod
chassis
telescoping mechanism
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.)
Granted
Application number
CN201610638005.6A
Other languages
Chinese (zh)
Other versions
CN106114676B (en
Inventor
刘国良
尹人奇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Sinoboom Intelligent Equipment Co Ltd
Original Assignee
Hunan Sinoboom Heavy Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hunan Sinoboom Heavy Industry Co Ltd filed Critical Hunan Sinoboom Heavy Industry Co Ltd
Priority to CN201610638005.6A priority Critical patent/CN106114676B/en
Priority claimed from CN201610638005.6A external-priority patent/CN106114676B/en
Publication of CN106114676A publication Critical patent/CN106114676A/en
Application granted granted Critical
Publication of CN106114676B publication Critical patent/CN106114676B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D61/00Motor vehicles or trailers, characterised by the arrangement or number of wheels, not otherwise provided for, e.g. four wheels in diamond pattern
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D7/00Steering linkage; Stub axles or their mountings
    • B62D7/06Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
    • B62D7/14Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering
    • B62D7/142Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering specially adapted for particular vehicles, e.g. tractors, carts, earth-moving vehicles, trucks

Abstract

The invention provides the chassis of a kind of vehicle, including underframe, supporting leg, telescoping mechanism, first connecting rod, second connecting rod, tire assembly and steering mechanism, described supporting leg is hingedly fixed on described underframe, form front axle assy and the rear axle assy of vehicle, tire assembly is arranged on the end of described supporting leg, described steering mechanism it is provided with between described tire assembly and supporting leg, described first, one end of second connecting rod is hinged with the stage casing of paired described supporting leg respectively, the other end is the most hinged with described telescoping mechanism, described telescoping mechanism is arranged on the axis of vehicle, the direction of motion of telescoping mechanism and the axis parallel of vehicle, described telescoping mechanism can drive described first connecting rod and second connecting rod to be synchronized with the movement, make the pair of described supporting leg synchronous on-off to predetermined angle.The chassis of vehicle provided by the present invention, utilizes linkage that the supporting leg of vehicle is hinged with telescoping mechanism so that two groups of supporting legs can open simultaneously or draw in, controls logic simple and convenient.

Description

A kind of chassis of vehicle
Technical field
The invention belongs to special vehicle field, particularly to the chassis of a kind of vehicle.
Background technology
The special vehicle of big height, the aerial work platform of the biggest height, generally for making car load keep stable, prevent Tumble, need to strengthen wheelspan and the wheelbase on its chassis.But chassis wheelspan is not readily transportable after strengthening, it is impossible to use flat board Car carries out highway transportation.The chassis wheelspan of aerial work platform is made scalable is current primary solutions, in transport Time shorten wheelspan, when operation, can by Wheel-tread enlarging, keep job stabilization.
Although existing aerial work platform can carry out the regulation of wheelspan, but generally scheme has two kinds, one be Arranging telescopic oil cylinder between the supporting leg of front and rear axle assembly, this scheme is very simple, but there is supporting leg when opening or draw in Nonsynchronous defect, if the bottom surface resistance of side tire is big, then the tire that bottom surface resistance is little can first move, cause supporting leg to open or Loss of stability during gathering, causes the accident overturned.First scheme is to utilize oil cylinder individually to control each supporting leg, often The folding and unfolding of single lower limb is responsible for by one oil cylinder, and its shortcoming is that the quantity of oil cylinder is many, hydraulically balanced valve is many, keeps front and rear axle assembly supporting leg The control difficulty of Complete Synchronization is big, and design cost and maintenance cost are high.
Fix additionally, above two scheme of the prior art there is also supporting leg dependence oil cylinder, if let out in oil cylinder, The span of lower limb can be affected, and once span narrows, vehicle will loss of stability, tumbling of whole vehicle may be caused.
Summary of the invention
The technical problem to be solved is, overcomes deficiency of the prior art, it is provided that a kind of simple in construction, energy Enough single oil cylinders realize the vehicle chassis of vehicle supporting leg folding.
In order to solve above-mentioned technical problem, the technical scheme is that
The chassis of the vehicle that the present invention provides, including underframe, telescoping mechanism, front axle assy and rear axle assy, front axle assy And rear axle assy, described front axle assy is positioned at front part of vehicle, and described rear axle assy is positioned at vehicle rear, described front axle assy and institute The structure stating rear axle assy is identical, and described front axle assy includes the first supporting leg, the second supporting leg, first connecting rod, second connecting rod, tire Assembly and steering mechanism, described first supporting leg and the second supporting leg be hinged on described underframe, and described tire assembly is arranged on supporting leg End, be provided with described steering mechanism between tire assembly and supporting leg;
Further, one end of first connecting rod is hinged with the stage casing of described first supporting leg, the other end of first connecting rod and institute Stating telescoping mechanism hinged, one end of described second connecting rod is hinged with the stage casing of described second supporting leg, the other end of second connecting rod with Described telescoping mechanism is hinged, and described telescoping mechanism is arranged on the axis of vehicle, the direction of motion of telescoping mechanism and vehicle Axis parallel, described telescoping mechanism can drive described first connecting rod and second connecting rod to be synchronized with the movement, make described first supporting leg and Second supporting leg synchronous on-off is to predetermined angle.
More specifically, the telescoping mechanism of above-mentioned vehicle chassis is oil cylinder.
Further, above-mentioned telescoping mechanism includes oil cylinder and the cross bar being fixed on oil cylinder, first connecting rod and second connecting rod It is respectively hinged at the two ends of described cross bar.
In one embodiment, above-mentioned vehicle chassis also includes cylinder protection device, and cylinder protection device is specially parcel The telescopic of oil cylinder, the canned paragraph of described telescopic is fixed on described underframe, and the telescopic section of telescopic follows described oil cylinder Piston rod movement.
In one embodiment, described cylinder protection device specially wraps up the telescopic of described oil cylinder, described telescopic Canned paragraph be fixed on described underframe, the telescopic section end of telescopic and described cross bar are fixing to be connected.
Preferably, when the supporting leg in such scheme opens completely, described first connecting rod and second connecting rod are positioned at always On line.
For strengthening the stability after supporting leg closes up, in one embodiment, described the first of the hinged place of described supporting leg is even On bar and second connecting rod, being respectively equipped with one towards the external part outside vehicle body, described external part is when described supporting leg fully comes together Abut.
In order to strengthen the stability after supporting leg opens, in one embodiment, when supporting leg fully comes together, described first, The external part of two connecting rods is located along the same line.
As the preferred structure of one, the telescoping mechanism of above-mentioned vehicle chassis is two, respectively with front axle assy and back axle Assembly connects.
As the preferred structure of another kind, the telescoping mechanism of above-mentioned vehicle chassis is one, and telescoping mechanism is oil cylinder, oil cylinder Two ends be connected with vehicle front axle assy and rear axle assy simultaneously.
As the preferred structure of one, the supporting leg in above-mentioned vehicle is telescopic legs.
The chassis of vehicle provided by the present invention, utilizes linkage that the supporting leg of vehicle is hinged with telescoping mechanism so that Two groups of supporting legs can open simultaneously or draw in, control logic simple and convenient.As further prioritization scheme, the present invention provides Vehicle chassis, after supporting leg opens and puts in place, utilizes linkage to form conllinear and realizes self-locking, it is possible to effectively protect oil cylinder.The present invention The technical scheme provided can keep stability during vehicle operation, it is ensured that the safety of vehicle.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only It is more fully understood that the present invention, and should not be construed limitation of the present invention.For those of ordinary skill in the art, exist On the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to the accompanying drawing provided, in following accompanying drawing, identical Part identical reference is set.
Fig. 1 is the structural representation of a kind of existing vehicle chassis;
Fig. 2 is the structural representation of another kind of existing vehicle chassis;
Fig. 3 is the expanded configuration schematic diagram of a kind of embodiment of vehicle chassis of the present invention;
Fig. 4 is the gathering structural representation of embodiment illustrated in fig. 3;
Fig. 5 is the expanded configuration schematic diagram of another kind embodiment of the present invention;
Fig. 6 is the gathering structural representation of embodiment illustrated in fig. 5;
Fig. 7 is the expanded configuration schematic diagram of another embodiment of the present invention;
Fig. 8 is the gathering structural representation of embodiment illustrated in fig. 7.
Detailed description of the invention
For the technical scheme making those skilled in the art be more fully understood that in the application, real below in conjunction with the application Execute the accompanying drawing in example, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described enforcement Example is only some embodiments of the present application rather than whole embodiments.
Embodiment one
Being the expanded configuration schematic diagram of the vehicle chassis that the present embodiment provides with reference to Fig. 3 and Fig. 4, Fig. 3, Fig. 4 is shown in Fig. 3 The gathering structural representation of embodiment.The present embodiment provide vehicle chassis include underframe 7, telescoping mechanism 6, front axle assy and after Axle assembly, front axle assy and rear axle assy, described front axle assy is positioned at front part of vehicle, and described rear axle assy is positioned at vehicle rear, Described front axle assy is identical with the structure of described rear axle assy, and telescoping mechanism 6 is oil cylinder, front axle assy include the first supporting leg 31, Second supporting leg 32, first connecting rod 41, second connecting rod 42, tire assembly 1 and steering mechanism 2, the first supporting leg 31 and the second supporting leg 32 Being hinged on underframe 7, tire assembly 1 is arranged on the end of supporting leg, is provided with steering mechanism 2 between tire assembly 1 and supporting leg;
Further, one end of first connecting rod 41 is hinged with the stage casing of the first supporting leg 31, the other end of first connecting rod 41 with One end of described oil cylinder is hinged, and one end of second connecting rod 42 is hinged with the stage casing of the second supporting leg 32, the other end of second connecting rod 42 Hinged with described telescoping mechanism 6, telescoping mechanism 6 is arranged on the axis of vehicle, the direction of motion of telescoping mechanism 6 and vehicle Axis parallel, described telescoping mechanism 6 can drive described first connecting rod 41 and second connecting rod 42 to be synchronized with the movement, make described first Lower limb 31 and the second supporting leg 32 synchronous on-off are to predetermined angle.
In the present embodiment, oil cylinder extends, and promotes first connecting rod 41 and second connecting rod 42 to be synchronized with the movement, first connecting rod 41 and the Two connecting rods 42 can promote the first supporting leg 31 and the second supporting leg 32 to open to vehicle body both sides, and the wheelspan of vehicle strengthens.Otherwise, oil cylinder contracts Short, pull first connecting rod 41 and second connecting rod 42, the angle of supporting leg diminishes, and the wheelspan of vehicle reduces.
Oil cylinder in the present embodiment can drive first connecting rod 41 and second connecting rod 42 to be synchronized with the movement, and makes the first supporting leg 31 He Second supporting leg 32 synchronous on-off, to predetermined angle, has an advantage in that, will not be weakened by unilateral Tire Friction and be affected, overcome Supporting leg nonsynchronous defect when opening or draw in, can be prevented effectively from unstability during vehicle supporting leg opens or draws in and turn over The situation of car.
Embodiment two
Refer to Fig. 5 and Fig. 6, the present embodiment difference from embodiment one is:
End at cylinder piston rod is fixedly installed a cross bar 9, the two ends of cross bar 9 and first connecting rod 41 and second connecting rod 42 are respectively articulated with.The operation principle of this design is identical with embodiment one, but by first, second connecting rod 42 from a pin joint Separately, be conducive to promoting stability and the motility of linkage.
Embodiment three
Owing to oil cylinder is merely able to bear the power in its telescopic direction, namely axial force, it is impossible to enough bear radial direction Power, the present embodiment, on the basis of embodiment one and embodiment two, adds cylinder protection device 8, as shown in Figure 5 and Figure 6, oil Cylinder protection device 8 is specially the telescopic wrapping up oil cylinder, and the canned paragraph of described telescopic is fixed on described underframe 7, telescopic Telescopic section follow the piston rod movement of described oil cylinder.The canned paragraph of telescopic is fixed on described underframe 7, stretching of telescopic Section end is fixing with described cross bar 9 to be connected.Cylinder protection device 8 in the present embodiment, the telescopic by parcel oil cylinder can Effectively prevent circular runout and the swing of oil cylinder, play the effect of protection oil cylinder.
Embodiment four
Owing to supporting leg is kept the state opened by the thrust of oil cylinder, when oil cylinder lets out fault in occurring, stablizing of supporting leg Property can not be guaranteed, in order to overcome this defect, present embodiments provide a kind of preferably scheme, refer to Fig. 3, Fig. 5, Fig. 7, When supporting leg in the present embodiment opens completely, described first connecting rod 41 and second connecting rod 42 are located along the same line.When supporting leg Folding angle reaches maximum rating, first connecting rod 41 and second connecting rod 42 and is located along the same line, and forms self-locking effect, and oil cylinder is not Stress again, this is designed to effectively protect oil cylinder.
In like manner, for strengthening the stability after supporting leg closes up, refer to Fig. 5 to Fig. 8, described the first of the hinged place of supporting leg is even On bar 41 and second connecting rod 42, being respectively equipped with one towards the external part 5 outside vehicle body, described external part 5 is complete at described supporting leg Abut when closing up.It is furthermore preferred that when supporting leg fully comes together, as shown in Figure 6 and Figure 8, described first, second connecting rod 42 External part 5 is located along the same line.When supporting leg fully comes together, owing to external part 5 abuts, the angle between supporting leg cannot Continue to reduce, oil cylinder can be made from impact.
In above-mentioned whole embodiment, as shown in Figures 3 to 6, the quantity of oil cylinder can be front axle assy and rear axle assy each One, one end of oil cylinder is fixed on underframe 7, and the other end is connected with front axle assy.Can also only arrange as shown in Figure 7 and Figure 8 One oil cylinder, its two ends are connected with vehicle front axle assy and rear axle assy simultaneously.
As the preferred structure of one, refer to Fig. 1 and Fig. 2, the supporting leg in above-mentioned whole embodiments is telescopic legs, Being provided with support oil cylinder inside supporting leg, supporting leg realizes flexible by support oil cylinder.
The above is only the detailed description of the invention of the application, it is noted that for the ordinary skill of the art For personnel, above-mentioned embodiment can reasonably combine, the nothing made on the premise of without departing from the application principle The improvement of palpus creative work is all considered as the protection domain that the application protects.

Claims (11)

1. a chassis for vehicle, including underframe (7), telescoping mechanism (6), front axle assy and rear axle assy, described front axle assy Being positioned at front part of vehicle, described rear axle assy is positioned at vehicle rear, and described front axle assy is identical with the structure of described rear axle assy, its It is characterised by:
Described front axle assy includes the first supporting leg (31), the second supporting leg (32), first connecting rod (41), second connecting rod (42), tire Assembly (1) and steering mechanism (2), described first supporting leg (31) and the second supporting leg (32) be hinged on described underframe (7), described takes turns Tire assembly (1) is arranged on the end of supporting leg, is provided with described steering mechanism (2) between tire assembly (1) and supporting leg;
One end of described first connecting rod (41) is hinged with the stage casing of described first supporting leg (31), the other end of first connecting rod (41) with Described telescoping mechanism (6) is hinged, and one end of described second connecting rod (42) is hinged with the stage casing of described second supporting leg (32), and second even The other end of bar (42) is hinged with described telescoping mechanism (6), and described telescoping mechanism (6) is arranged on the axis of vehicle, flexible The direction of motion of mechanism (6) and the axis parallel of vehicle, described telescoping mechanism (6) can drive described first connecting rod (41) and the Two connecting rods (42) are synchronized with the movement, and make described first supporting leg (31) and the second supporting leg (32) synchronous on-off to predetermined angle.
The chassis of vehicle the most according to claim 1, it is characterised in that: described telescoping mechanism (6) is oil cylinder.
The chassis of vehicle the most according to claim 2, it is characterised in that: also include cylinder protection device (8), described oil cylinder Protection device (8) is to wrap up the telescopic of described oil cylinder, and the canned paragraph of described telescopic is fixed on described underframe (7), flexible The telescopic section of set follows the piston rod movement of described oil cylinder.
4. according to the chassis of the vehicle shown in claim 1, it is characterised in that: described telescoping mechanism (6) includes oil cylinder and fixes Cross bar (9) on described oil cylinder, described first connecting rod (41) and second connecting rod (42) are respectively hinged at the two of described cross bar (9) End.
The chassis of vehicle the most according to claim 4, it is characterised in that: also include cylinder protection device (8), described oil cylinder Protection device (8) is to wrap up the telescopic of described oil cylinder, and the canned paragraph of described telescopic is fixed on described underframe (7), flexible The telescopic section end of set is fixing with described cross bar (9) to be connected.
6. according to the chassis of the vehicle described in Claims 1 to 5 any one, it is characterised in that: when described supporting leg opens completely, Described first connecting rod (41) and second connecting rod (42) are in same straight line.
7. according to the chassis of the vehicle described in Claims 1 to 5 any one, it is characterised in that: it is the hinged of described supporting leg On the described first connecting rod (41) at place and second connecting rod (42), be respectively equipped with one towards the external part (5) outside vehicle body, described in stretch Go out end (5) to abut when described supporting leg fully comes together.
The chassis of vehicle the most according to claim 7, it is characterised in that: when described supporting leg fully comes together, described first even The external part (5) of bar (41) and second connecting rod (42) is in same straight line.
9. according to the chassis of the vehicle described in Claims 1 to 5 any one, it is characterised in that: the number of described telescoping mechanism (6) Amount is two, and described telescoping mechanism (6) connects described front axle assy and described rear axle assy respectively.
10. according to the chassis of the vehicle described in claim 2~5 any one, it is characterised in that: described telescoping mechanism (6) Quantity is one, and its two ends are connected with vehicle front axle assy and rear axle assy simultaneously.
11. according to the chassis of the vehicle described in Claims 1 to 5 any one, it is characterised in that: described first supporting leg (31), Second supporting leg (32) is telescopic legs.
CN201610638005.6A 2016-08-05 A kind of chassis of vehicle Active CN106114676B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610638005.6A CN106114676B (en) 2016-08-05 A kind of chassis of vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610638005.6A CN106114676B (en) 2016-08-05 A kind of chassis of vehicle

Publications (2)

Publication Number Publication Date
CN106114676A true CN106114676A (en) 2016-11-16
CN106114676B CN106114676B (en) 2019-07-16

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107856489A (en) * 2017-12-07 2018-03-30 山东五征集团有限公司 Full pose adjustment wheeled tractor
CN109373953A (en) * 2018-11-19 2019-02-22 徐工消防安全装备有限公司 Engineering truck and its control method
CN109986528A (en) * 2019-03-18 2019-07-09 合肥禾成信息科技有限公司 A kind of rocking bar control robot
US11535320B2 (en) * 2017-02-27 2022-12-27 Suzhou Cleva Precision Machinery AND Technology Co., Ltd. Walking mechanism, robot having same, and self-walking mower

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3791673A (en) * 1972-11-08 1974-02-12 American Prod Inc Folding means for implement frame structures
US3820497A (en) * 1972-05-31 1974-06-28 Konijn Machinebouw Nv Transport vehicle
US3885808A (en) * 1973-01-05 1975-05-27 Beyer D G Inc Detachable auxiliary load distributing assembly
CN202280128U (en) * 2011-09-14 2012-06-20 周佰兴 Refuse cleaning clamp
CN102745259A (en) * 2012-07-19 2012-10-24 西北工业大学 Swing arm type double-wheel-track composite special engineering vehicle chassis
CN102874334A (en) * 2012-09-24 2013-01-16 玉柴桩工(常州)有限公司 Mechanism for adjusting track gauge of track chassis
CN103552618A (en) * 2012-03-19 2014-02-05 Jlg工业公司 Pivoting axle system
CN204703109U (en) * 2015-04-20 2015-10-14 江苏佳鹿车辆有限公司 The road-sweeper that cleaning range is adjustable
CN205854321U (en) * 2016-08-05 2017-01-04 湖南星邦重工有限公司 A kind of chassis of vehicle

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3820497A (en) * 1972-05-31 1974-06-28 Konijn Machinebouw Nv Transport vehicle
US3791673A (en) * 1972-11-08 1974-02-12 American Prod Inc Folding means for implement frame structures
US3885808A (en) * 1973-01-05 1975-05-27 Beyer D G Inc Detachable auxiliary load distributing assembly
CN202280128U (en) * 2011-09-14 2012-06-20 周佰兴 Refuse cleaning clamp
CN103552618A (en) * 2012-03-19 2014-02-05 Jlg工业公司 Pivoting axle system
CN102745259A (en) * 2012-07-19 2012-10-24 西北工业大学 Swing arm type double-wheel-track composite special engineering vehicle chassis
CN102874334A (en) * 2012-09-24 2013-01-16 玉柴桩工(常州)有限公司 Mechanism for adjusting track gauge of track chassis
CN204703109U (en) * 2015-04-20 2015-10-14 江苏佳鹿车辆有限公司 The road-sweeper that cleaning range is adjustable
CN205854321U (en) * 2016-08-05 2017-01-04 湖南星邦重工有限公司 A kind of chassis of vehicle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11535320B2 (en) * 2017-02-27 2022-12-27 Suzhou Cleva Precision Machinery AND Technology Co., Ltd. Walking mechanism, robot having same, and self-walking mower
CN107856489A (en) * 2017-12-07 2018-03-30 山东五征集团有限公司 Full pose adjustment wheeled tractor
CN109373953A (en) * 2018-11-19 2019-02-22 徐工消防安全装备有限公司 Engineering truck and its control method
CN109986528A (en) * 2019-03-18 2019-07-09 合肥禾成信息科技有限公司 A kind of rocking bar control robot

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Address after: 410600, 128, Jinzhou Avenue East, Jinzhou new district, Changsha, Hunan, Ningxiang

Patentee after: Hunan Xingbang Intelligent Equipment Co.,Ltd.

Address before: 410600, 128, Jinzhou Avenue East, Jinzhou new district, Changsha, Hunan, Ningxiang

Patentee before: HUNAN SINOBOOM HEAVY INDUSTRY Co.,Ltd.

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Denomination of invention: Chassis of vehicle

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