CN-121973569-A - Variable wheel tread widening device and vehicle

CN121973569ACN 121973569 ACN121973569 ACN 121973569ACN-121973569-A

Abstract

The invention discloses a variable tread widening device and a vehicle, and solves the problems that the stability and trafficability of a fixed tread of a traditional transport vehicle are difficult to be considered, the existing production process needs to be changed, and an executive component is easy to damage. The device is characterized in that the driving, box-type expansion and contraction and load guide rail mechanisms are arranged in a frame box beam, the driving mechanism drives the three-stage box-type expansion and contraction mechanism to move along the guide rail, the box beam penetrates through a strip-shaped through hole of the frame box beam and is fixedly connected with the expansion and contraction mechanism, the bottom of the box beam is connected with a bearing wheel set, the wheel track expansion and contraction are realized through the action of the expansion and contraction mechanism, the device is further provided with a limiting block, a square sleeve and a box beam bearing guide rail assembly, the running is ensured to be stable, the device is transversely arranged on a vehicle, and the device is arranged at two ends of the box beam. The invention does not need to greatly change the original core components of the vehicle, the hydraulic actuating element does not bear main load, the structure is stable, the cost is low, the invention is suitable for special transportation complex working conditions with heavy load, and can quickly fall to the ground.

Inventors

HAN QING
SHI GUODONG
ZHAO JUNSHENG
ZHAO SHAN
WEI QIUDONG
WANG DECHENG
Wei Zhongao
LIU HUI
WEI ZHONGBAO
CHEN SHIZHENG
WANG HAIPING
WEI ZHONGYU

Assignees

西格玛智能装备(山东)有限公司
济南大学

Dates

Publication Date: 20260505
Application Date: 20260402

Claims (10)

1. The variable wheel tread widening device is characterized by comprising a driving mechanism, a box type telescopic mechanism, a load guide rail mechanism, a vehicle box beam and a bearing wheel set, wherein the driving mechanism, the box type telescopic mechanism and the load guide rail mechanism are arranged in the vehicle frame box beam; The vehicle body beam is fixedly connected with the bearing wheel set, and the bottom of the vehicle body beam is fixedly connected with the bearing wheel set through the extension and retraction of the box type telescopic device, so that the wheel track is widened and contracted.
2. The variable tread widening device according to claim 1, wherein the box type telescopic mechanism comprises a primary box type telescopic mechanism, a secondary box type telescopic mechanism and a tertiary box type telescopic mechanism, the primary box type telescopic mechanism is fixed inside a frame box girder, primary guide rails are arranged on upper and lower wall surfaces inside the primary box type telescopic mechanism, sliding blocks are arranged on upper and lower wall surfaces outside the secondary box type telescopic mechanism, and the secondary box type telescopic mechanism can move relatively inside the primary box type telescopic mechanism through mutual matching of the primary guide rails and the sliding blocks, and the tertiary box type telescopic mechanism is fixedly connected with the secondary box type telescopic mechanism.
3. The variable track width widening device according to claim 1, wherein the load guide rail mechanism comprises a secondary guide rail and a bearing guide rail seat, the secondary guide rail is fixed on upper and lower wall surfaces inside the frame box girder, the bearing guide rail seat is fixed on a tertiary box type telescopic mechanism, the bearing guide rail seat and the secondary guide rail are matched to realize relative movement, and the tertiary box type telescopic mechanism moves inside the frame box girder along the secondary guide rail along with the bearing guide rail seat.
4. A variable track width widening apparatus according to claim 3, wherein the bearing guide rail seats are at least two groups, each group comprises two bearing guide rail seats, each group of bearing guide rail seats is respectively arranged on an upper wall surface and a lower wall surface outside the three-stage box type telescopic mechanism, and the upper positions and the lower positions of the two bearing guide rail seats are aligned.
5. The variable tread widening device of claim 1, wherein a carriage beam loading guide rail seat is fixedly arranged on the carriage beam, and a carriage beam loading guide rail is arranged at the bottom of the carriage frame.
6. The variable track width widening device of claim 1, wherein the driving mechanism is a telescopic sleeve hydraulic cylinder.
7. The variable tread widening device of claim 6, wherein the piston head end of the bellows cylinder is provided with a through hole, the inside of the second-stage bellows mechanism near one end of the first-stage bellows mechanism is provided with an ear ring shaft, and the ear ring shaft passes through the through hole of the piston head end of the bellows cylinder and is connected with the piston head.
8. The variable tread widening device of claim 1, further comprising a limiting block fixedly arranged inside the carriage beam, so as to avoid the separation of the primary box-type telescopic mechanism from the secondary box-type telescopic mechanism under the drive of the telescopic box-type sleeve hydraulic cylinder.
9. The variable tread widening device of claim 1, further comprising square sleeves, wherein the square sleeves are uniformly arranged along the length direction of the telescopic sleeve hydraulic cylinder, and the telescopic sleeve hydraulic cylinder is fixed inside the primary box type telescopic device through the square sleeves.
10. A vehicle characterized in that the variable tread widening device as claimed in any one of claims 1-9 is employed, the variable tread widening device being arranged in the transverse direction of the vehicle and being provided at both ends of the bed beam.

Description

Variable wheel tread widening device and vehicle Technical Field The invention relates to the field of vehicles, in particular to a variable tread widening device and a vehicle. Background The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. With the rapid development of heavy equipment and large-scale component industry, the transportation demands of ultra-long and overweight components such as wind power blades, large-scale bridge components, heavy towers and the like are increased increasingly, and the comprehensive performance requirements of special transportation vehicles are also improved continuously. The special transport vehicle often runs in areas with complex road conditions such as mountain areas, hills, workshops and the like, faces unfavorable working conditions such as changeable road width, large transverse slope angle, tight sharp curves and the like, and meanwhile, the special transport vehicle also needs to run on standardized roads such as common roads, expressways and the like. The special transportation vehicle has the characteristics of large length, concentrated mass and high installation height, so that the center of gravity of the whole vehicle is far higher than that of a common road transportation vehicle, the side-tipping risk is easily generated in the running or turning process of a cross slope section, the requirement on the transverse stability of the vehicle is strict, and when the vehicle runs on limited-width sections such as mountain narrow roads, expressway entrances and exits, temporary construction channels and the like, the higher requirement on the trafficability of the vehicle is also provided. The increase vehicle track is the effective means that promotes lateral stability, reduces the antidumping risk, but traditional special transportation vehicle adopts fixed track structure more, is rigid connection between axle and the frame, and the track can't be adjusted after the design is accomplished, is difficult to compromise stability under the complex operating mode and narrow road's trafficability characteristic. Taking wind power blade transportation as an example, the wheel track of the existing wind power blade transportation vehicle is about 4.025m, the limit slope angle which can pass is about 10 degrees, the slope angle of a special mountain road and a construction pavement can reach 12 degrees, if the safety driving is ensured, the wheel track which needs to be widened is about 0.8m, and the widened wheel track is severely limited by the road boundary when the narrow road passes, so that the vehicle passing capacity is greatly reduced. Besides wind power blade transportation, special transportation of other overlong and overweight components also faces the same wheel tread adaptation problem, a fixed wheel tread structure cannot meet the traffic demands of special transportation vehicles under different road working conditions, and a device capable of flexibly adjusting the wheel tread and an adaptation vehicle are needed to be developed, so that the wheel tread can be dynamically adjusted according to road conditions. In the prior art, although a part of wheel track adjustable structures exist, the wheel track change is realized by arranging a telescopic axle, a movable wheel set, an adjustable suspension and the like, but the scheme is mostly applied to light vehicles, small engineering machinery or agricultural machinery, has limited structural bearing capacity and cannot be directly adapted to heavy-load special vehicles such as wind power blades, heavy component transportation and the like, and meanwhile, the scheme is required to greatly change the structural design and the production process of the original axles, wheel sets and suspensions of the vehicles, so that the production equipment and the detection standard are required to be matched and adjusted, the production and manufacturing cost of the special transportation vehicles is greatly increased, extremely high requirements are also provided for the process transformation capacity of production enterprises, and the rapid landing in the production system of the existing special transportation vehicles is difficult. In addition, most of hydraulic or mechanical executing elements with variable track structures are directly arranged in the wheel sets, and need to participate in bearing partial load of the vehicle, so that the executing elements are stressed too much and are extremely easy to damage, and long-term requirements of heavy-load special transport vehicles on running stability and use safety are difficult to meet. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a variable tread widening device and a vehicle, the invention can not greatly change the components such as the existing axles, wheel sets, suspensions and the like, and meanwhile, the hydraulic a