阅读说明：本技术 悬挂装置及运输车 (Suspension device and transport vehicle ) 是由 顾灏 李光鑫 于 2021-01-09 设计创作，主要内容包括：本申请提供一种悬挂装置,包括悬臂和驱动件。所述悬臂包括导向件和安装件,所述安装件用于连接车轮,所述导向件用于与运输车车身活动配合。所述驱动件一端连接所述悬臂,另一端用于连接所述运输车车身,用于驱动所述悬臂在所述导向件导向下相对所述运输车车身位移。通过悬臂与运输车车身活动配合,悬臂可以带动车轮靠近或远离运输车车身,通过车轮相对运输车车身的移动来改变车轮对运输车的支撑区域。使得运输车运输不同大小、重量的运输物时,能够通过调整支撑区域来提供稳定的支撑。本申请还提供一种运输车。(The application provides a suspension device, including cantilever and driving piece. The cantilever includes guide and installed part, the installed part is used for connecting the wheel, the guide be used for with transport vechicle automobile body clearance fit. The cantilever is connected to driving piece one end, and the other end is used for connecting the transport vechicle automobile body is used for the drive the cantilever is in relative under the guide the transport vechicle automobile body displacement. Through cantilever and transport vechicle automobile body clearance fit, the cantilever can drive the wheel and be close to or keep away from the transport vechicle automobile body, changes the support region of wheel pair transport vechicle through the removal of the relative transport vechicle automobile body of wheel. When the transport vehicle transports the transported objects with different sizes and weights, the stable support can be provided by adjusting the support area. The application also provides a transport vehicle.)

1. A suspension arrangement, comprising:

the cantilever comprises a guide part and a mounting part, the mounting part is used for connecting a wheel, and the guide part is movably matched with a body of the transport vehicle;

driving piece, one end is connected the cantilever, the other end is used for connecting the transport vechicle automobile body is used for the drive the cantilever is in relative under the guide the transport vechicle automobile body displacement.

2. The suspension device according to claim 1, wherein the guide member has a guide hole for insertion of a connection beam of the transporter body so that the cantilever can move in an extending direction of the connection beam.

3. The suspension apparatus as claimed in claim 2, wherein the guide member comprises a sleeve and two mounting frames, the guide hole is formed in the middle of the sleeve, the two mounting frames are fixed at both ends of the sleeve, the two mounting frames are commonly connected with a hinge shaft, and one end of the mounting member is sleeved on the hinge shaft.

4. The suspension device according to claim 2, wherein the guide hole inner wall has a stop surface for abutting against the connection beam to prevent the guide member from rotating around the connection beam.

5. The suspension of claim 1 wherein said mounting members are two in number, and wherein said mounting members are symmetrically disposed on opposite sides of said guide member.

6. A suspension arrangement according to claim 1, wherein the mounting member comprises a link bracket hingedly connected to the guide member and an axle hingedly connected to an end of the link bracket remote from the guide member.

7. The suspension apparatus of claim 6, further comprising:

the steering piece is hinged with the connecting support, and the wheel shaft is fixedly arranged on one side of the steering piece;

the rotation locking piece is arranged on the cantilever and used for locking the relative position of the wheel shaft and the connecting bracket;

one end of the driving piece is connected with the steering piece, and the other end of the driving piece is used for being connected with the carrier vehicle body.

8. The suspension apparatus of claim 7 wherein the rotation lock comprises:

and the telescopic piece is fixed on the connecting bracket and is provided with a movable end capable of abutting against the steering piece.

9. The suspension system of claim 7 wherein said steering member includes a connecting arm extending to one side, said drive member having one end hingedly connected to said connecting arm.

10. A vehicle, comprising a vehicle body and a suspension device according to any one of claims 1 to 9;

the transport vehicle body is provided with a connecting beam, and the cantilever is movably arranged on the connecting beam.

Technical Field

The application relates to the field of vehicle driving structures, in particular to a suspension device and a transport vehicle.

Background

The wheels of the existing transport vehicle have a relatively fixed distance from the vehicle body, but the transport vehicle may encounter various transport conditions during the running process, for example, when the running speed of the transport vehicle is high or the transported objects on the transport vehicle are large, if the wheels are too close to the vehicle body of the transport vehicle, the support of the transport vehicle is easy to be unstable. However, when the transport vehicle encounters a narrow road surface, if the wheels are too far away from the vehicle body of the transport vehicle, part of the wheels can not be supported on the road surface, and the support of the transport vehicle can also be unstable.

Disclosure of Invention

In view of the above, it is desirable to provide a suspension device and a transportation vehicle, which can solve the problem that the transportation vehicle cannot be effectively supported under various road conditions.

Embodiments of the present application provide a suspension device including a suspension arm and a drive member. The cantilever includes guide and installed part, the installed part is used for connecting the wheel, the guide be used for with transport vechicle automobile body clearance fit. The cantilever is connected to driving piece one end, and the other end is used for connecting the transport vechicle automobile body is used for the drive the cantilever is in relative under the guide the transport vechicle automobile body displacement.

Through cantilever and transport vechicle automobile body clearance fit, the cantilever can drive the wheel and be close to or keep away from the transport vechicle automobile body, changes the support region of wheel pair transport vechicle through the removal of the relative transport vechicle automobile body of wheel. When the transport vehicle transports the transported objects with different sizes and weights, the stable support can be provided by adjusting the support area.

In a possible embodiment, the guide has a guide hole for inserting a connecting beam of the vehicle body so that the cantilever is movable in the direction of extension of the connecting beam.

The guiding hole is connected with the form of tie-beam for the cantilever can be along the relative haulage vehicle body displacement of the extending direction of tie-beam.

In a possible embodiment, the guide piece comprises a sleeve and two installation frames, the guide hole is formed in the middle of the sleeve, the two installation frames are fixed at two ends of the sleeve, the two installation frames are jointly connected with the hinge shaft, and one end of the installation piece is sleeved outside the hinge shaft.

The sleeve can increase the contact area of the guide piece and the connecting arm so as to reduce the pressure, and part of the space formed between the two mounting frames can be used for inserting the end part of the mounting piece and is jointly connected with a hinge shaft so as to realize the hinge connection of the mounting frames and the mounting piece.

In a possible embodiment, the inner wall of the guide hole has a stop surface for abutting against the connecting beam to prevent the guide from rotating around the connecting beam.

The guide hole inner wall has the backstop face, and is promptly, and the guide hole is non-round hole, and the cross-section of tie-beam also is non-round, can prevent through this form that the guide from rotating around the tie-beam.

In a possible embodiment, the number of the mounting elements is two, and the two mounting elements are symmetrically arranged on both sides of the guide element.

Two installed parts symmetry sets up can make the guide atress even in the both sides of guide, and avoids the guide part to receive great moment and make the guide damage.

In a possible embodiment, the mounting member comprises a connecting bracket and a wheel axle, the connecting bracket is hinged to the guide member, and the wheel axle is hinged to an end of the connecting bracket facing away from the guide member.

The connecting bracket is hinged with the guide piece, and a buffer device can be added between the connecting bracket and the guide piece to buffer when the vehicle runs on a bumpy road.

In a possible embodiment, the suspension device further comprises a steering element and a rotation lock. The steering piece is hinged to the connecting support, and the wheel shaft is fixedly arranged on one side of the steering piece. The rotation locking piece is arranged on the cantilever and used for locking the relative position of the wheel shaft and the connecting bracket. One end of the driving piece is connected with the steering piece, and the other end of the driving piece is used for being connected with the carrier vehicle body.

The steering member is used for steering the wheels, and the driving member drives the steering member to realize the movement of the suspension device on the connecting beam. The wheel steering and the wheel outward expansion are completed by using the same driving piece, and only when the wheel outward expansion is carried out, the rotation freedom degree of the steering piece and the connecting support is limited by rotating the locking piece, so that the driving piece can only drive the suspension device to move on the connecting beam.

In a possible embodiment, the rotational lock comprises a telescopic element. The telescopic piece is fixed on the connecting support and is provided with a movable end capable of abutting against the steering piece.

The telescopic part realizes that the steering part and the connecting support are relatively fixed by abutting against the steering part, and when the steering part and the connecting support are relatively fixed, the cantilever can be driven to be close to or far away from the vehicle body through the stretching of the driving part.

In a possible embodiment, the steering element comprises a connecting arm extending offset from the wheel axle, and the drive element is articulated at one end to the connecting arm.

The embodiment of the application also provides a transport vehicle which comprises a transport vehicle body and the suspension device. The transport vehicle body is provided with a connecting beam, and the cantilever is movably arranged on the connecting beam.

Can expand the support region of wheel adjustment transport vechicle outward through setting up linkage to avoid the vehicle to overturn, in addition, when the vehicle passes through comparatively narrow road surface, also can be so that the wheel can contact the road surface all the time through adduction wheel.

Drawings

Fig. 1 is a schematic structural view of a transporter in one embodiment of the present application.

Fig. 2 is a schematic structural view of a vehicle body and a suspension device connecting portion in an embodiment of the present application.

Fig. 3 is a schematic view of a suspension arrangement from a first perspective in an embodiment of the present application.

Fig. 4 is a schematic view of a suspension arrangement from a second perspective in an embodiment of the present application.

Fig. 5 is a schematic structural view of a vehicle body and a suspension device connecting portion at the time of wheel flare in an embodiment of the present application.

Fig. 6 is a schematic structural view of a vehicle body and a suspension device connecting portion when a wheel is received in the vehicle according to an embodiment of the present application.

Fig. 7 is a schematic structural view of a vehicle body and a suspension device connecting portion at the time of wheel deflection in an embodiment of the present application.

Description of the main elements

Transport vehicle 001

Vehicle body 100

First segment 110

Extension 111

Second segment 130

First portion 131

First bearing side 131a

Connecting portion 133

Bearing bottom surface 133a

Second part 135

Second bearing side 135a

Steering assembly 150

Pull rod 151

Rocker arm 153

Coupling beam 200

Positioning bolt 210

Cantilever 300

Guide 310

Guide hole 311

Sleeve 313

Mounting frame 315

Hinge shaft 317

Mounting member 330

Connecting bracket 331

Abdication hole 331a

Driving member 350

Steering member 370

Hinge post 371

Connecting arm 373

Rotation lock 390

Wheel 400

The following detailed description will further illustrate the present application in conjunction with the above-described figures.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

Embodiments of the present application provide a suspension device including a suspension arm and a drive member. The cantilever includes guide and installed part, the installed part is used for connecting the wheel, the guide be used for with transport vechicle automobile body clearance fit. The cantilever is connected to driving piece one end, and the other end is used for connecting the transport vechicle automobile body is used for the drive the cantilever is in relative under the guide the transport vechicle automobile body displacement.

Through cantilever and transport vechicle automobile body clearance fit, the cantilever can drive the wheel and be close to or keep away from the transport vechicle automobile body, changes the support region of wheel pair transport vechicle through the removal of the relative transport vechicle automobile body of wheel.

The embodiment of the application also provides a transport vehicle which comprises a transport vehicle body and the suspension device. The transport vehicle body is provided with a connecting beam, and the cantilever is movably arranged on the connecting beam.

Can expand the support region of wheel adjustment transport vechicle outward through setting up linkage to avoid the vehicle to overturn, in addition, when the vehicle passes through comparatively narrow road surface, also can be so that the wheel can contact the road surface all the time through adduction wheel.

Embodiments of the present application will be further described with reference to the accompanying drawings.

Referring to fig. 1 and 2, an embodiment of the present application provides a transportation vehicle 001 for carrying and transporting objects, and can control a supporting area by outward expansion and inward contraction of wheels 400. Such a transporter 001 comprises a transporter 001 body and suspension means.

The carrier vehicle 001 comprises a vehicle body 100 and a connecting beam 200, wherein the vehicle body 100 is provided with a bearing surface capable of bearing a transported object, and the connecting beam 200 is arranged on two sides of the vehicle body.

Referring to fig. 2, 3 and 4, the suspension apparatus includes a suspension arm 300, and the suspension arm 300 further includes a guide member 310 and a mounting member 330. The guide member 310 is provided with a guide hole 311, and the connecting beam 200 is inserted into the guide hole 311 and can move along the extending direction of the connecting beam 200, so that the movable connection of the suspension device and the body of the carrier vehicle 001 is realized. The mounting member 330 is connected with the guide member 310, the wheel 400 is mounted on the mounting member 330, and the transportation vehicle 001 is driven to move by the rolling of the wheel 400 on the road surface. The suspension device further comprises a driving member 350, one end of the driving member 350 is connected with the cantilever 300, and the other end is connected with the body of the transport vehicle 001. The driving of the driving part 350 enables the cantilever 300 to move along the extending direction of the connecting beam 200, so that the cantilever 300 is relatively close to or far away from the vehicle body 100, and the wheel 400 is driven to be relatively close to or far away from the vehicle body 100, thereby expanding or contracting the supporting area of the transport vehicle 001.

The wheels 400 support the whole transport vehicle 001 on the road surface, the wheels 400 are located at the support position of the transport vehicle 001, all the wheels 400 jointly enclose to form a support area, when the support area is too small, the whole gravity center of the transport vehicle 001 easily moves out of the support area, so that the transport vehicle 001 is easy to tip over, but when the support area is too large, the support area is not beneficial to the automobile to pass through a narrow area. Such a transporting vehicle 001 can realize a change of a supporting area to be adapted to various situations during transportation and use transported objects of different volumes and weights via a relative movement of the suspension device with respect to the vehicle body 100.

The carrier vehicle 001 can be used to transport various types of cargo, such as various tanks having different lengths. The size of each model of tank varies greatly, and the vehicle body 100 also needs to be adjusted in size in order to fit the various models of tanks. Specifically, the transportation vehicle 001 further includes a vehicle head (not shown in the figure), and the vehicle body 100 includes a first section 110 and a second section 130, wherein one end of the first section 110 is connected to the vehicle head, and one end of the second section 130 is connected to one end of the first section 110, which is away from the vehicle head. The first section 110 is of a design that can be telescoped to fit tanks of various lengths. The first section 110 includes two extending members 111, and the two extending members 111 are slidably disposed such that the overall length of the first section 110 can be changed. The driving structure for driving the two extending members 111 to slide relative to each other may be an oil cylinder or a screw pair, which is a conventional technology and is not described herein again. When the carrier vehicle 001 transports an oil tank having a long length, the first section 110 has a long length by the mutual sliding and unfolding of the two extending members 111, and the oil tank can be placed on the vehicle body 100 as a whole. When the transport vehicle 001 transports the oil tank with a short length, the two extending pieces 111 can slide mutually to contract, so that the first section 110 has a short length, and the flexibility of the transport vehicle 001 can be improved.

The second section 130 of the carrier 001 also needs to be adapted to the curved surface of the tank, and in order to make part of the bearing surface on the second section 130 fit the outer surface of the tank as much as possible, the second section 130 comprises a first part 131, a connecting part 133 and a second part 135. The connecting portion 133 connects the first portion 131 and the second portion 135, the first portion 131 has a first carrying side 131a, the second portion 135 has a second carrying side 135a, and the first carrying side 131a and the second carrying side 135a disposed at an angle are respectively used for supporting two sides of the transported object. The connecting portion 133 has a bearing bottom surface 133a for supporting the bottom of the transported object. The first bearing side surface 131a, the second bearing side surface 135a and the bearing bottom surface 133a are mutually angled and respectively fit the arc-shaped surface of the oil tank, so that the oil tank can be supported in multiple directions.

Since the overall support area of the transporter 001 is mainly controlled by the support points at both ends, that is, by the wheels 400 at the head position and the wheels 400 at the tail position. Therefore, no suspension device is provided on the first section 110 located in the middle, and only the second section 130 is provided with a suspension device to control the extension and retraction of the wheel 400. The coupling beams 200 of the carrier vehicle 001 are disposed at both sides of the second section 130.

A total of two pairs of suspension means arranged on either side of the second section 130 allow control of the support area of the vehicle 001 by movement relative to the second section 130. The guide 310 of the suspension device includes a sleeve 313, a guide hole 311 is formed in the middle of the sleeve 313, the cross-sectional shape of the coupling beam 200 is substantially square, arc-shaped surfaces are formed at both side waist portions of the coupling beam 200, and the cross-sectional shape of the guide hole 311 is the same as the cross-sectional shape of the coupling beam 200. That is, the flat portions of the inner walls of the guide holes 311 form stop surfaces that abut against the outer walls of the connection beam 200 to prevent the guide 310 from rotating about the connection beam 200. It is understood that the cross-section of the guide hole 311 may be formed in a semicircular shape, a circular crown shape, a hexagonal shape, etc., so long as it is non-circular, a stop surface may be formed to prevent the guide member 310 from rotating around the coupling beam 200.

The guide member 310 further includes two mounting frames 315, one mounting frame 315 is disposed at an end of the sleeve 313 close to the vehicle body 100, and the other mounting frame 315 is disposed at an end of the sleeve 313 far from the vehicle body 100. The mounting frame 315 includes two half frames connected by bolts, and the two half frames are assembled and connected to each other and then sleeved outside the connection beam 200. A hinge space is formed between the two mounting frames 315, one end of the connecting bracket 331 of the mounting member 330 is inserted into the hinge space, and a hinge shaft 317 sequentially passes through one mounting frame 315, the connecting bracket 331 and the other mounting frame 315, thereby realizing the hinge connection of the guide member 310 and the mounting member 330. The articulated shaft 317 is parallel to the extending direction of the connecting beam 200, the two mounting parts 330 are symmetrically arranged at two sides of the mounting frame 315, the two mounting parts 330 are connected through the hydraulic oil cylinder, the hydraulic oil cylinder provides buffer force, so that the two mounting parts 330 can rotate around the connecting shaft when being subjected to external force, and the buffer force is buffered through the hydraulic oil cylinder.

Compared with the form that the two mounting parts 330 are arranged on only one side of the guide part 310, the moment applied to the guide part 310 by the two mounting parts 330 can counteract the rotation tendency of the guide part 310 and prevent the guide part 310 from rotating around the connecting beam 200. It will be appreciated that in other embodiments, a mounting member 330 may be provided on the guide member 310, and the mounting member 330 may be provided on the side of the guide member 310 adjacent the roadway to avoid the guide member 310 having a tendency to rotate about the bridge 200.

The mounting member 330 further comprises an axle arranged at an end of the connecting bracket 331 facing away from the guide 310, through which axle the mounting of the wheel 400 is achieved, i.e. the hub sleeve of the wheel 400 is arranged outside the axle enabling a rotation of the wheel 400 relative to the axle. In order to reduce the friction when the wheel 400 is moving, a bearing may be provided outside the wheel shaft. To facilitate steering of the wheel 400, the axle is hinged to the connecting bracket 331 by a steering member 370. Specifically, the steering member 370 includes a hinge post 371, and the end of the connecting bracket 331 facing away from the guide member 310 is provided with a first clamping plate and a second clamping plate which are parallel. Articulated post 371 sets up between first splint and second splint to both ends respectively with first splint and second splint rotatable coupling, articulated post 371 perpendicular to articulated shaft 317 sets up, and the shaft setting is kept away from automobile body 100 one side at articulated post 371, through the rotation of the relative linking bridge 331 of articulated post 371 for the shaft changes with the contained angle of automobile body 100, and then can make the epaxial wheel 400 of wheel and the contained angle change of automobile body 100.

The steering member 370 further includes a connecting arm 373 extending in a direction deviating from the wheel axle, and an end of the driving member 350 away from the vehicle body 100 is hinged to the connecting arm 373, and since the connecting bracket 331 and the driving member 350 have a certain position conflict, in order to facilitate the installation of the driving member 350, a relief hole 331a is further provided on the connecting bracket 331 for the driving member 350 to pass through the connecting bracket 331. The driving member 350 is a hydraulic cylinder, the driving member 350 can push the cantilever 300 away from the vehicle body 100 by extending the driving member 350, the driving member 350 can pull the cantilever 300 close to the vehicle body 100 by shortening the driving member 350, and since the connecting position of the driving member 350 and the steering member 370 is arranged eccentrically with respect to the wheel axle, when the driving member 350 drives the cantilever 300 close to or away from the vehicle body 100, the relative position of the steering member 370 and the connecting bracket 331 needs to be locked, so as to avoid the deflection of the wheels 400 caused by the extension and shortening of the driving member 350, so as to steer the transportation vehicle 001. The arm 300 further includes a rotation locking member 390, and the rotation of the steering member 370 and the connecting bracket 331 can be locked or unlocked by rotating the rotation locking member 390. The rotation lock 390 includes an expansion member, which is formed by a cylinder and fixed on the connection bracket 331, and a movable end of the expansion member is disposed toward the hinge post 371. When the telescopic member is extended, the movable end of the telescopic member abuts against the hinge post 371, so that the hinge post 371 and the connecting bracket 331 are locked, that is, the steering member 370 and the connecting bracket 331 are locked. When the telescopic member is shortened, the movable end of the telescopic member leaves the hinge post 371, and the hinge post 371 restores the degree of freedom of rotation, so that the steering member 370 can rotate relative to the connecting bracket 331. Therefore, when the wheel 400 needs to be expanded or contracted, the telescopic member is extended to lock the steering member 370 and the connecting bracket 331, and then the driving member 350 is extended or shortened to realize that the cantilever 300 is relatively far away from or close to the vehicle body 100.

In other embodiments, the rotation lock 390 may be configured not by an air cylinder but by a friction plate or the like, as long as the locking and unlocking of the steering member 370 and the connecting bracket 331 can be controlled.

The driving member 350 can drive the cantilever 300 to move along the extending direction of the connecting beam 200, and can also drive the wheel 400 to deflect to realize the steering of the transport vehicle 001. Specifically, the vehicle body 100 comprises a steering assembly 150 for steering the transport vehicle 001, the steering assembly 150 comprises a pull rod 151 and a rocker arm 153, the rocker arm 153 is rotatably arranged on the pull rod 151, one end of the driving member 350 is hinged with the cantilever 300, and the other end of the driving member is hinged with the rocker arm 153. Four rocker arms 153 are arranged on one pull rod 151, each rocker arm 153 corresponds to one wheel 400, and when the pull rod 151 is pulled, the four rocker arms 153 can be driven to synchronously move, so that the four wheels 400 on the side can synchronously deflect. The two steering assemblies 150 located at both sides of the second segment 130 are symmetrically arranged and interlocked with each other such that when the four wheels 400 at one side of the displacement are deflected, the four wheels 400 at the other side of the displacement are deflected synchronously.

Since the driving member 350 controls the deflection of the wheel 400 and the outward and inward contraction of the wheel 400 at the same time, in order to enable the driving member 350 to control the deflection of the wheel 400 individually at the same time, it is also necessary to fix the relative positions of the cantilever 300 and the connection beam 200. In order to fix the relative position between the cantilever 300 and the connection beam 200, a first positioning hole is formed in the guide 310, a plurality of second positioning holes are formed in the connection beam 200 and spaced apart from each other in the extending direction of the connection beam 200, and the connection beam 200 and the cantilever 300 can be fixed relative to each other by the positioning bolt 210 penetrating through the first positioning hole and the corresponding second positioning hole. When the connecting beam 200 and the suspension arm 300 are fixed relatively, the driving member 350 can drive the wheel 400 to deflect relative to the body 100, so as to steer the transportation vehicle 001.

It should be noted that, in other embodiments, the driving element 350 may be used to drive the wheel 400 to approach or depart from the vehicle body 100, without participating in steering the wheel 400. At this time, the driving member 350 may directly act on the guide member 310 of the suspension arm 300 and the body of the carrier vehicle 001, and since the driving member 350 directly acts on the guide member 310 without deflecting the wheel 400 due to the operation of the driving member 350, the rotation lock member 390 may be eliminated in this form. In the case where the driving member 350 is used alone to move the wheel 400 closer to or away from the body 100, the driving member 350 may not be connected to the suspension arm 300 or the body 100 in an articulated manner, but may be directly fixed to the suspension arm 300 and the body 100, for example, a cylinder disposed parallel to the connecting beam 200, one end of which is fixed to the guide member 310 and the other end of which is fixed to the body 100, and the movement of the guide member 310 relative to the body 100 may be achieved by the extension and contraction of the cylinder.

Referring to fig. 5, when the transportation vehicle 001 needs to travel on a narrow road surface, or when the transportation vehicle 001 transports a small transportation object such as a small oil tank, the positioning bolts 210 on the connecting beam 200 and the guide member 310 are taken out, the steering member 370 and the connecting bracket 331 are locked by rotating the locking member 390, the driving member 350 shortens and pulls the cantilever 300 to move in a direction close to the vehicle body 100, the positioning bolts 210 are inserted into the first positioning holes and the corresponding second positioning holes to fix the positions of the connecting beam 200 and the guide member 310, and the rotating locking member 390 is unlocked to enable the steering member 370 and the connecting bracket 331 to rotate relatively. At this time, the wheels 400 are supported at a position close to the vehicle body 100 to form a small support area, but the wheels are convenient to avoid obstacles on the road surface, all the wheels 400 can be attached to the road surface to form support on a narrow road surface, and the steering member 370 and the connecting bracket 331 can rotate relatively without affecting the steering of the transport vehicle 001.

Referring to fig. 6, when the transportation vehicle 001 needs to travel on a wide road surface or the transportation vehicle 001 transports a large transportation object such as a large oil tank, the positioning bolts 210 on the connecting beam 200 and the guide member 310 are taken out, the steering member 370 and the connecting bracket 331 are locked by rotating the locking member 390, the driving member 350 extends to push the cantilever 300 to move in a direction away from the vehicle body 100, the positioning bolts 210 are inserted into the first positioning holes and the corresponding second positioning holes to fix the positions of the connecting beam 200 and the guide member 310, and the rotating locking member 390 is unlocked to enable the steering member 370 and the connecting bracket 331 to rotate relatively. At this time, the wheel 400 is supported at a position far from the body 100, forming a large support area, and the steering member 370 and the connecting bracket 331 can relatively rotate without affecting the steering of the carrier vehicle 001.

Referring to fig. 7, when the transportation vehicle 001 needs to be steered, the relative positions of the connection beam 200 and the guide member 310 are fixed by the positioning bolt 210, then the driving member 350 moves relatively by controlling the movement of the pull rod 151, and then the driving member 350 drives the steering member 370 to rotate relative to the guide member 310 so as to deflect the wheel 400.

Through this kind of transport vechicle 001 can realize the form of vehicle on various road surfaces, guarantee on the one hand that the support area of transport vechicle 001 makes transport vechicle 001 go steadily, on the other hand can be so that retrieve wheel 400 when meetting special circumstances and be close to automobile body 100 in order to avoid the barrier.

In addition, other changes may be made by those skilled in the art within the spirit of the present application, and it is understood that such changes are encompassed within the scope of the present disclosure.