Transport vehicle and loading adjustment method

Abstract

A transport vehicle comprises a vehicle body, a connecting beam, a cantilever, wheels and a drive member. The vehicle body has a load-bearing surface for carrying transported objects. The connecting beam is arranged on both sides of the vehicle body. The cantilever comprises a guide member and a mounting member, the guide member movably cooperates with the connecting beam, and the mounting member is connected to the guide member and extends in a direction away from the connecting beam. The wheels are arranged on the mounting member. One end of the drive member is connected to the cantilever and the other end is connected to the vehicle body, and is used to drive the cantilever to move relative to the connecting beam. This transport vehicle realizes the movement of the wheels relative to the vehicle body by means of a cantilever that can move along the connecting beam, thereby controlling the load position of the wheels on the road surface relative to the transport vehicle. When it is necessary to transport larger and heavier transported objects, the two sides of the transported objects are close to or even exceed the edges of the vehicle body, and the wheels can be moved to a position away from the vehicle body, thereby expanding the support area to provide more stable support. A loading adjustment method is also provided.

Description

Technical Field

[0001] The present application relates to a transport device, and in particular to a transport vehicle and a loading adjustment method. Background Art

[0002] The wheels of existing transport vehicles have a relatively fixed distance from the vehicle body. However, the transport vehicle may encounter various transport situations during operation. For example, if the transport vehicle is traveling at a high speed or the transported objects are large, if the wheels are too close to the vehicle body, the transport vehicle may become unstable. However, if the transport vehicle encounters a narrow road, if the wheels are too far away from the vehicle body, some wheels may lose their support on the road surface, which may also cause the transport vehicle to become unstable. Summary of the Invention

[0003] In view of the above situation, it is necessary to provide a transport vehicle and a loading adjustment method to solve the problem that the transport vehicle cannot be effectively supported under various road conditions.

[0004] An embodiment of the present application provides a transport vehicle, comprising a vehicle body, a connecting beam, a cantilever, wheels, and a drive member. The vehicle body has a bearing surface for carrying transported objects. The connecting beam is disposed on both sides of the vehicle body. The cantilever comprises a guide member and a mounting member, the guide member being movably engaged with the connecting beam, and the mounting member being connected to the guide member and extending in a direction away from the connecting beam. The wheels are disposed on the mounting member. The drive member has one end connected to the cantilever and the other end connected to the vehicle body, and is used to drive the cantilever to move relative to the connecting beam.

[0005] This type of transporter uses cantilevers that can move along the connecting beam to enable the wheels to move relative to the vehicle body, thereby controlling the wheel's load position on the road. When carrying large and heavy objects, the two sides of the objects approach or even exceed the edges of the vehicle body. In this way, the wheels can be moved away from the vehicle body, thereby expanding the support area and providing more stable support. Of course, when carrying smaller objects, the wheels can be moved closer to the vehicle body, thereby reducing the support area and improving the transporter's flexibility.

[0006] In a possible embodiment, the transport vehicle further includes a vehicle head. The vehicle body includes a first section and a second section, the first section connecting the vehicle head and the second section. The connecting beam is provided on both sides of the second section.

[0007] The second section of this transport vehicle is set at a position far away from the front of the vehicle. The load-bearing area can be adjusted by simply controlling the position of the wheels on the second section. Therefore, the connecting beam only needs to be set in the second section.

[0008] In a possible embodiment, the second section includes a first part, a connecting part, and a second part; the connecting part connects the first part and the second part; the first part has a first load-bearing side surface, the second part has a second load-bearing side surface, and the first load-bearing side surface and the second load-bearing side surface set at an angle are respectively used to support the two sides of the transported object; the connecting part has a load-bearing bottom surface for supporting the bottom of the transported object.

[0009] The second section is divided into three parts, namely a first part, a connecting part and a second part. The three parts have surfaces that are angled with each other to adapt to the carrying of transport objects with curved surfaces.

[0010] In a possible implementation manner, the mounting member includes 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.

[0011] The connecting bracket is hinged to the guide member, and a buffer device can be added between the connecting bracket and the guide member to provide buffering when driving on bumpy roads.

[0012] In one possible embodiment, the cantilever further includes a steering member and a rotation locking member. The steering member is hingedly connected to the connecting bracket, and the wheel axle is fixedly mounted on one side of the steering member. The rotation locking member is disposed on the cantilever and is used to lock the relative position of the wheel axle and the connecting bracket. One end of the driving member is connected to the steering member, and the other end is used to connect to the transport vehicle body.

[0013] The steering element is used to steer the wheels, while the drive element drives the steering element to move the suspension assembly on the connecting beam. This allows both wheel steering and wheel expansion to be accomplished using the same drive element. However, during wheel expansion, the steering element and the connecting bracket must be rotated to limit their rotational freedom, so that the drive element can only drive the suspension assembly on the connecting beam.

[0014] In a possible embodiment, the vehicle body further includes a steering assembly, the steering assembly including a pull rod and a rocker arm. The rocker arm is rotatably disposed on the pull rod. One end of the driving member is hinged to the cantilever, and the other end is hinged to the rocker arm.

[0015] This transport vehicle can drive the rocker arm and the driving member thereon to move by pulling the pull rod, and the movement of the driving member can drive the wheels to turn.

[0016] In a possible embodiment, the first section includes at least two extension members, and the at least two extension members are movably arranged so that the second section can be relatively close to or away from the vehicle front.

[0017] The two extension members of this transport vehicle can slide relative to each other along the extension direction of the vehicle body, thereby changing the overall length of the first section along the extension direction of the vehicle body. When the overall length of the transported object is short, the movement of the extension members can be controlled to shorten the length of the first section to match the length. Conversely, when the overall length of the transported object is long, the movement of the extension members can be controlled to extend the length of the first section to match the length.

[0018] In a possible embodiment, at least two first positioning holes are provided on the connecting beam at intervals along the extending direction of the connecting beam, and a second positioning hole is provided on the guide member for overlapping and cooperating with the first positioning holes.

[0019] By passing the positioning bolt through the second positioning hole and engaging with the thread of the first positioning hole, the connecting beam and the guide member can be relatively fixed.

[0020] An embodiment of the present application further provides a loading adjustment method using the above-mentioned transport vehicle, comprising the steps of:

[0021] Calculate the support area based on the size and volume of the transported object;

[0022] determining a preset position of the wheel according to the support area;

[0023] The driving member is controlled to drive the cantilever to move so that the wheel is in the preset position.

[0024] This loading adjustment method enables the transport vehicle to adjust the support area according to the characteristics of the transported objects, thereby allowing the transport vehicle to provide good support when transporting various transported objects.

[0025] In a possible implementation manner, the step of controlling the driving member to drive the cantilever to move along the connecting beam so that the wheel is in the preset position includes:

[0026] The cantilever is unlocked from the connecting beam so that the cantilever can move relative to the connecting beam;

[0027] The driving member drives the cantilever to move along the connecting beam so that the wheel is in the preset position;

[0028] The cantilever and the connecting beam are locked to prevent the cantilever from moving relative to the connecting beam.

[0029] This loading adjustment method can be applied to a transport vehicle in which the driving part can be used to drive the cantilever to move relative to the vehicle body, and can also drive the wheel to deflect to make the transport vehicle turn, so that the transport vehicle can adjust the support area according to the characteristics of the transported objects, thereby allowing the transport vehicle to provide good support when transporting various transported objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of a transport vehicle in one embodiment of the present application.

[0031] Figure 2 It is a structural schematic diagram of the vehicle body and the connection part of the suspension device in one embodiment of the present application.

[0032] Figure 3 It is a structural schematic diagram of a suspension device in an embodiment of the present application from a first perspective.

[0033] Figure 4 It is a structural schematic diagram of the suspension device in an embodiment of the present application from a second perspective.

[0034] Figure 5 It is a structural schematic diagram of the vehicle body and the connection part of the suspension device when the wheel is expanded in one embodiment of the present application.

[0035] Figure 6 It is a structural schematic diagram of the vehicle body and the connection part of the suspension device when the wheel is retracted in one embodiment of the present application.

[0036] Figure 7 It is a structural schematic diagram of the vehicle body and the connection part of the suspension device when the wheel is deflected in an embodiment of the present application.

[0037] Figure 8 It is a flow chart of a loading adjustment method in one embodiment of the present application.

[0038] Description of main component symbols

[0039] Transporter 001

[0040] Vehicle body 100

[0041] 1st paragraph 110

[0042] Extension 111

[0043] Section 2 130

[0044] Part 1131

[0045] First supporting side surface 131a

[0046] Connecting portion 133

[0047] Support bottom surface 133a

[0048] Part 2 135

[0049] Second supporting side surface 135a

[0050] Steering assembly 150

[0051] Tie rod 151

[0052] Rocker arm 153

[0053] Connecting beam 200

[0054] Positioning bolt 210

[0055] Cantilever 300

[0056] Guide 310

[0057] Guide hole 311

[0058] Sleeve 313

[0059] Installation frame 315

[0060] Articulated shaft 317

[0061] Mounting 330

[0062] Connecting bracket 331

[0063] Clearance hole 331a

[0064] Drive 350

[0065] Steering parts 370

[0066] Articulated column 371

[0067] Connecting arm 373

[0068] Rotation lock 390

[0069] Wheel 400

[0070] The following specific implementation methods will further illustrate this application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0071] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0072] It should be noted that when an element is considered to be “connected” to another element, it may be directly connected to the other element or there may be a centrally disposed element. When an element is considered to be “disposed on” another element, it may be directly disposed on the other element or there may be a centrally disposed element.

[0073] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0074] An embodiment of the present application provides a transport vehicle, comprising a vehicle body, a connecting beam, a cantilever, wheels, and a drive member. The vehicle body has a bearing surface for carrying transported objects. The connecting beam is disposed on both sides of the vehicle body. The cantilever comprises a guide member and a mounting member, the guide member being movably engaged with the connecting beam, and the mounting member being connected to the guide member and extending in a direction away from the connecting beam. The wheels are disposed on the mounting member. The drive member has one end connected to the cantilever and the other end connected to the vehicle body, and is used to drive the cantilever to move relative to the connecting beam.

[0075] This type of transporter uses cantilevers that can move along the connecting beam to enable the wheels to move relative to the vehicle body, thereby controlling the wheel's load position on the road. When carrying large and heavy objects, the two sides of the objects approach or even exceed the edges of the vehicle body. In this way, the wheels can be moved away from the vehicle body, thereby expanding the support area and providing more stable support. Of course, when carrying smaller objects, the wheels can be moved closer to the vehicle body, thereby reducing the support area and improving the transporter's flexibility.

[0076] An embodiment of the present application further provides a loading adjustment method using the above-mentioned transport vehicle, comprising the steps of:

[0077] Calculate the support area based on the size and volume of the transported object;

[0078] determining a preset position of the wheel according to the support area;

[0079] The driving member is controlled to drive the cantilever to move so that the wheel is in the preset position.

[0080] This loading adjustment method enables the transport vehicle to adjust the support area according to the characteristics of the transported objects, thereby allowing the transport vehicle to provide good support when transporting various transported objects.

[0081] The embodiments of the present application are further described below with reference to the accompanying drawings.

[0082] Example 1

[0083] See also Figure 1 and Figure 2The first embodiment of the present application provides a transport vehicle 001 for carrying and transporting objects, and can control the support area by expanding and retracting the wheels 400. The transport vehicle 001 includes a vehicle body and a suspension device.

[0084] The body of the transport vehicle 001 includes a body 100 and a connecting beam 200. The body 100 has a load-bearing surface that can support the transported objects. The connecting beam 200 is arranged on both sides of the body.

[0085] Please refer to Figure 2 、 Figure 3 and Figure 4 The suspension device includes a cantilever 300, which in turn includes a guide member 310 and a mounting member 330. The guide member 310 is provided with a guide hole 311, into which the connecting beam 200 is inserted and can move along the extension direction of the connecting beam 200, thereby achieving a movable connection between the suspension device and the body of the transport vehicle 001. The mounting member 330 is connected to the guide member 310, and a wheel 400 is mounted on the mounting member 330. The rolling motion of the wheel 400 on the road surface drives the transport vehicle 001 to move. The suspension device also includes a driving member 350, one end of which is connected to the cantilever 300 and the other end is connected to the body of the transport vehicle 001. The driving member 350 drives the cantilever 300 along the extension direction of the connecting beam 200, thereby causing the cantilever 300 to move relatively closer to or farther from the body 100, driving the wheel 400 to move relatively closer to or farther from the body 100, thereby expanding or reducing the support area of ​​the transport vehicle 001.

[0086] The wheels 400 support the entire transport vehicle 001 on the road surface. The position of the wheels 400 is also the support position of the transport vehicle 001. All wheels 400 together form a support area. If the support area is too small, the overall center of gravity of the transport vehicle 001 can easily move out of the support area, making the transport vehicle 001 prone to tipping. However, if the support area is too large, it is not convenient for the vehicle to pass through narrow areas. This transport vehicle 001 can achieve a change in the support area by moving the suspension device relative to the vehicle body 100 to adapt to various conditions during transportation and to transport objects of different sizes and weights.

[0087] This transport vehicle 001 can be used to transport various types of transported objects, such as various oil tanks of different lengths. The sizes of various types of oil tanks vary greatly. In order to adapt to various types of oil tanks, the vehicle body 100 also needs to be resized. Specifically, the transport vehicle 001 also includes a front end (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 front end, and one end of the second section 130 is connected to the end of the first section 110 away from the front end. The first section 110 adopts a retractable design to adapt to oil tanks of various lengths. The first section 110 includes two extension members 111, and the two extension members 111 are slidably arranged so that the overall length of the first section 110 can be changed. The driving structure that drives the two extension members 111 to slide against each other can be a cylinder or a screw pair. This is a conventional technology and will not be described in detail here. When transporting a long oil tank, the two extension members 111 slide together and expand to extend the first section 110, allowing the entire oil tank to be placed on the vehicle body 100. When transporting a short oil tank, the two extension members 111 slide together and retract to shorten the first section 110, thereby increasing the mobility of the transporting vehicle 001.

[0088] The second section 130 of the transport vehicle 001 also needs to adapt to the curved surface of the oil tank. In order to ensure that the supporting surface of the second section 130 can fit the outer surface of the oil tank as closely as possible, the second section 130 includes a first portion 131, a connecting portion 133, and a second portion 135. The connecting portion 133 connects the first portion 131 and the second portion 135. The first portion 131 has a first load-bearing side surface 131a, and the second portion 135 has a second load-bearing side surface 135a. The first load-bearing side surface 131a and the second load-bearing side surface 135a, which are arranged at an angle, are respectively used to support the two sides of the transported object. The connecting portion 133 has a load-bearing bottom surface 133a for supporting the bottom of the transported object. The first load-bearing side surface 131a, the second load-bearing side surface 135a, and the load-bearing bottom surface 133a are angled with each other and each fits the curved surface of the oil tank, allowing the oil tank to be supported from all sides.

[0089] Because the overall support area of ​​transport vehicle 001 is primarily controlled by the support points at its two ends—namely, the wheels 400 at the front and rear—no suspension devices are installed on the central first section 110. Suspension devices are only installed on the second section 130 to control the outward and inward movement of the wheels 400. Transport vehicle 001's connecting beams 200 are located on both sides of the second section 130.

[0090] Two pairs of suspension devices, arranged on either side of the second section 130, control the support area of ​​the transport vehicle 001 by moving relative to the second section 130. The guide member 310 of this suspension device includes a sleeve 313 with a guide hole 311 formed in the center. The cross-section of the connecting beam 200 is generally square, with curved surfaces formed on both side waists of the connecting beam 200. The cross-section of the guide hole 311 is identical to that of the connecting beam 200. Specifically, the flat portion of the inner wall of the guide hole 311 forms a stop surface, which, in contact with the outer wall of the connecting beam 200, prevents the guide member 310 from rotating around the connecting beam 200. It is understood that the cross-section of the guide hole 311 can also be configured as a semicircular, crown-shaped, hexagonal, or other shape. As long as it is non-circular, it can form a stop surface to prevent the guide member 310 from rotating around the connecting beam 200.

[0091] The guide member 310 also includes two mounting frames 315: one mounted on the end of the sleeve 313 closest to the vehicle body 100, and the other mounted on the end of the sleeve 313 further away from the vehicle body 100. The mounting frames 315 consist of two halves connected by bolts. After being assembled and connected, the two halves are sleeved onto the outside of the connecting 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. A hinge axis 317 passes through one mounting frame 315, the connecting bracket 331, and the other mounting frame 315, achieving the articulated connection between the guide member 310 and the mounting member 330. The hinge axis 317 is parallel to the extension direction of the connecting beam 200. The two mounting members 330 are symmetrically arranged on either side of the mounting frames 315. The two mounting members 330 are connected by a hydraulic cylinder, which provides a buffering force. This allows the two mounting members 330 to rotate about the connecting axis when subjected to external forces, with the buffering force of the hydraulic cylinder providing a buffer.

[0092] The two mounting members 330 are symmetrically arranged on either side of the guide member 310, which allows for uniform force on the guide member 310. Compared to a mounting member 330 provided only on one side of the guide member 310, the torque exerted by the two mounting members 330 on the guide member 310 can offset the guide member 310's tendency to rotate, thereby preventing the guide member 310 from rotating around the connecting beam 200. It is understood that in other embodiments, a single 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 closest to the road surface, thereby preventing the guide member 310 from rotating around the connecting beam 200.

[0093] The mounting member 330 also includes an axle mounted on the end of the connecting bracket 331 facing away from the guide member 310. The axle facilitates the mounting of the wheel 400. Specifically, the hub of the wheel 400 is mounted on the axle, enabling the wheel 400 to rotate relative to the axle. To reduce friction during wheel 400 movement, a bearing may also be provided on the axle. To facilitate steering of the wheel 400, the axle is hingedly connected to the connecting bracket 331 via a steering member 370. Specifically, the steering member 370 includes a hinge post 371. A first and a second parallel clamping plate are provided on the end of the connecting bracket 331 facing away from the guide member 310. The hinge column 371 is arranged between the first clamping plate and the second clamping plate, and its two ends are rotatably connected to the first clamping plate and the second clamping plate respectively. The hinge column 371 is arranged perpendicular to the hinge axis 317, and the wheel axle is arranged on the side of the hinge column 371 away from the vehicle body 100. By rotating the hinge column 371 relative to the connecting bracket 331, the angle between the wheel axle and the vehicle body 100 changes, and then the angle between the wheel 400 on the wheel axle and the vehicle body 100 can be changed.

[0094] The steering member 370 also includes a connecting arm 373 extending away from the wheel axle. The end of the driving member 350 away from the vehicle body 100 is hingedly connected to the connecting arm 373. Because there is a certain positional conflict between the connecting bracket 331 and the driving member 350, a clearance hole 331a is provided on the connecting bracket 331 to facilitate the installation of the driving member 350. The driving member 350 is a hydraulic cylinder. When the driving member 350 is extended, the cantilever 300 is pushed away from the vehicle body 100. When the driving member 350 is shortened, the cantilever 300 is pulled toward the vehicle body 100. Because the connection position between the driving member 350 and the steering member 370 is eccentric with respect to the wheel axle, when the driving member 350 is used to drive the cantilever 300 toward or away from the vehicle body 100, the relative position of the steering member 370 and the connecting bracket 331 must be locked to prevent the wheel 400 from deflecting and causing the transport vehicle 001 to steer when the driving member 350 is extended or shortened. The cantilever 300 also includes a rotational locking member 390, which locks or unlocks the relative rotation between the steering member 370 and the connecting bracket 331. The rotational locking member 390 includes a telescopic member, formed by a cylinder, fixed to the connecting bracket 331, with its movable end facing the hinge post 371. When the telescopic member is extended, its movable end abuts against the hinge post 371, locking the hinge post 371 and the connecting bracket 331, thereby locking the steering member 370 and the connecting bracket 331. When the telescopic member is shortened, its movable end moves away from the hinge post 371, restoring the rotational freedom of the hinge post 371 and allowing the steering member 370 to rotate relative to the connecting bracket 331. Therefore, when the wheel 400 needs to be extended or retracted, the telescopic member is first extended to lock the steering member 370 and the connecting bracket 331, and then the drive member 350 is extended or shortened to move the cantilever 300 relatively away from or closer to the vehicle body 100.

[0095] It should be noted that, in other embodiments, the rotation locking member 390 may also use other structures such as friction plates instead of cylinders, as long as it can control the locking and unlocking of the steering member 370 and the connecting bracket 331.

[0096] In addition to driving the cantilever 300 along the extension direction of the connecting beam 200, the driver 350 can also drive the wheels 400 to steer, thereby achieving steering of the transport vehicle 001. Specifically, the vehicle body 100 includes a steering assembly 150 for steering the transport vehicle 001. The steering assembly 150 comprises a tie rod 151 and a rocker arm 153, which is rotatably mounted on the tie rod 151. One end of the driver 350 is hinged to the cantilever 300, and the other end is hinged to the rocker arm 153. Four rocker arms 153 are mounted on one tie rod 151, each corresponding to a wheel 400. When the tie rod 151 is pulled, the four rocker arms 153 are simultaneously driven to move synchronously, thereby achieving synchronous steering of the four wheels 400 on that side. The two steering assemblies 150 on either side of the second section 130 are symmetrically arranged and interlocked, ensuring that when the four wheels 400 on one side are deflected, the four wheels 400 on the other side also deflect synchronously.

[0097] Because the driver 350 simultaneously controls the deflection of the wheel 400 and the expansion and contraction of the wheel 400, in order for the driver 350 to independently control the deflection of the wheel 400 at the same time, it is also necessary to fix the relative position of the cantilever 300 and the connecting beam 200. To fix the relative position of the cantilever 300 and the connecting beam 200, a first positioning hole is provided on the guide member 310, and a plurality of second positioning holes are provided on the connecting beam 200, spaced apart along the extension direction of the connecting beam 200. The connecting beam 200 and the cantilever 300 can be relatively fixed by passing the positioning bolts 210 through the first positioning holes and the corresponding second positioning holes. Once the connecting beam 200 and the cantilever 300 are relatively fixed, the driver 350 can drive the wheel 400 to deflect relative to the vehicle body 100, thereby achieving steering of the transport vehicle 001.

[0098] It should be noted that in other embodiments, the driver 350 can be used solely to drive the wheel 400 toward or away from the vehicle body 100, without participating in driving the wheel 400 to steer. In this case, the driver 350 can directly act on the guide member 310 of the cantilever 300 and the vehicle body 001. Since the driver 350 directly acts on the guide member 310, the operation of the driver 350 does not cause the wheel 400 to deflect. Therefore, in this embodiment, the rotation locking member 390 can be eliminated. In the case where the driver 350 is used solely to drive the wheel 400 toward or away from the vehicle body 100, the driver 350 can be directly fixed to the cantilever 300 and the vehicle body 100 instead of being connected to the cantilever 300 or the vehicle body 100 via a hinged connection. For example, a cylinder can be provided parallel to the connecting beam 200, with one end of the cylinder fixed to the guide member 310 and the other end fixed to the vehicle body 100. The movement of the guide member 310 relative to the vehicle body 100 can be achieved by extending and retracting the cylinder.

[0099] See also Figure 5When the transport vehicle 001 needs to travel on a narrow road, or when transporting smaller objects such as small oil tanks, the positioning bolts 210 on the connecting beam 200 and the guide member 310 are removed, and the locking member 390 is rotated to lock the steering member 370 and the connecting bracket 331. The driving member 350 is shortened to pull the cantilever 300 toward the vehicle body 100. The positioning bolts 210 are inserted into the first positioning hole and the corresponding second positioning hole to fix the position of the connecting beam 200 and the guide member 310. The locking member 390 is rotated to unlock the position, allowing the steering member 370 and the connecting bracket 331 to rotate relative to each other. At this time, the wheels 400 are supported in a position close to the vehicle body 100, forming a smaller support area, but it is convenient to avoid obstacles on the road. On narrow roads, all wheels 400 can also be in contact with the road surface to form support, while the steering member 370 and the connecting bracket 331 can rotate relative to each other without affecting the steering of the transport vehicle 001.

[0100] See also Figure 6 When the transport vehicle 001 needs to travel on a wide road, or when transporting larger objects such as large oil tanks, the positioning bolts 210 on the connecting beam 200 and the guide member 310 are removed, and the steering member 370 and the connecting bracket 331 are locked by rotating the locking member 390. The driving member 350 is extended to push the cantilever 300 away from the vehicle body 100. The positioning bolts 210 are inserted into the first positioning hole and the corresponding second positioning hole to fix the position of the connecting beam 200 and the guide member 310. The locking member 390 is rotated to unlock the position, allowing the steering member 370 and the connecting bracket 331 to rotate relative to each other. At this time, the wheel 400 is supported at a position away from the vehicle body 100, forming a larger support area, and the steering member 370 and the connecting bracket 331 can rotate relative to each other without affecting the steering of the transport vehicle 001.

[0101] See also Figure 7 When this transport vehicle 001 needs to turn, the relative positions of the connecting beam 200 and the guide member 310 are first fixed by the positioning bolt 210, and then the movement of the pull rod 151 is controlled to make the driving member 350 move relative to it, and then the driving member 350 drives the steering member 370 to rotate relative to the guide member 310, so that the wheel 400 is deflected.

[0102] This transport vehicle 001 can be used on various road surfaces. On the one hand, the support area of ​​the transport vehicle 001 is guaranteed so that the transport vehicle 001 can run smoothly. On the other hand, when encountering special situations, the wheels 400 can be retracted close to the vehicle body 100 to avoid obstacles.

[0103] Example 2

[0104] See also Figure 8The second embodiment of the present application provides a loading adjustment method, which is implemented using the transport vehicle 001 provided in Example 1, and includes the following steps:

[0105] S101: Based on the size and volume of the transported object, the required support area is determined through calculation or direct experience. The support area is defined as the area between the tires located outermost from the vehicle body 100. If the support area differs from the current support area, the process proceeds to step S102. If the support area is the same, the subsequent steps are discontinued.

[0106] S102: Determine the preset position of the wheel 400 according to the previously obtained support area.

[0107] S103 , the cantilever 300 is unlocked from the connecting beam 200 by pulling the positioning bolt 210 out of the first positioning hole and the second positioning hole, thereby enabling the cantilever 300 to move relative to the connecting beam 200 .

[0108] S104 , controlling the driving member 350 to drive the cantilever 300 to move so that the wheel 400 is at a preset position.

[0109] S105 , inserting the positioning bolt 210 into the first positioning hole and the second positioning hole, so as to lock the cantilever 300 and the connecting beam 200 , thereby preventing the cantilever 300 from moving relative to the connecting beam 200 .

[0110] Specifically, after step S103 , the method further includes step S103 ′: using the movable end of the telescopic member to abut against the steering member 370 to prevent the steering member 370 from rotating relative to the connecting bracket 331 .

[0111] Correspondingly, after step S104 , the method further includes step S104 ′: moving the movable end of the telescopic member away from the steering member 370 , so that the steering member 370 can rotate relative to the connecting bracket 331 .

[0112] This loading adjustment method can adjust the position of the outer wheels 400 of the transport vehicle 001 according to the size of the transported object, thereby providing stable support for the transport vehicle 001.

[0113] In addition, those skilled in the art may also make other changes within the spirit of this application. Of course, these changes made according to the spirit of this application should be included in the scope disclosed in this application.

Claims

1. A transport vehicle, characterized in that: include: The vehicle body has a bearing surface for bearing the transported object; Connecting beams are provided on both sides of the vehicle body; The cantilever comprises a guide member and a mounting member, wherein the guide member is movably engaged with the connecting beam, and the mounting member is connected to the guide member and extends in a direction away from the connecting beam; a wheel, disposed on the mounting member; a driving member, one end of which is connected to the cantilever and the other end of which is connected to the vehicle body, for driving the cantilever to move relative to the connecting beam to move closer to or away from the vehicle body; The cantilever also includes a steering member and a rotation locking member. The steering member is hinged to the mounting member, and the wheel is set on the mounting member through the steering member; the rotation locking member is set on the cantilever, and is used to lock the relative position of the steering member and the mounting member when the cantilever is driven close to or away from the vehicle body by the driving member; one end of the driving member is connected to the steering member, and the other end is connected to the vehicle body.

2. The transport vehicle according to claim 1, wherein: Also includes: Front of the vehicle; The vehicle body includes a first section and a second section, wherein the first section connects the vehicle head and the second section; The connecting beams are arranged on both sides of the second section.

3. The transport vehicle according to claim 2, wherein: The first section includes at least two extension members, and the at least two extension members are movably arranged so that the second section can be relatively close to or away from the vehicle head.

4. The transport vehicle according to claim 2, wherein: The second section includes a first portion, a connecting portion, and a second portion; The connecting portion connects the first portion and the second portion; The first portion has a first load-bearing side surface, and the second portion has a second load-bearing side surface, wherein the first load-bearing side surface and the second load-bearing side surface are arranged at an angle and are respectively used to support two sides of the transported object; The connecting portion has a bearing bottom surface for supporting the bottom of the transported object.

5. The transport vehicle according to claim 1, wherein: The mounting member includes a connecting bracket and a wheel axle. The connecting bracket is hinged to the guide member, and the wheel axle is hinged to one end of the connecting bracket away from the guide member.

6. The transport vehicle according to claim 1, wherein: The vehicle body further includes a steering assembly, which includes: tie rod; a rocker arm rotatably disposed on the pull rod; One end of the driving member is hinged to the cantilever, and the other end is hinged to the rocker arm.

7. The transport vehicle according to claim 1, wherein: At least two first positioning holes are provided on the connecting beam at intervals along the extending direction of the connecting beam; The guide member is provided with a second positioning hole for overlapping and matching with the first positioning hole.

8. A loading adjustment method, characterized in that: Using the transport vehicle according to any one of claims 1 to 7, comprising: Obtaining a support area according to the data of the transported object; determining a preset position of the wheel according to the support area; The driving member is controlled to drive the cantilever to move so that the wheel is in the preset position.

9. The loading adjustment method according to claim 8, wherein: The step of controlling the driving member to drive the cantilever to move so that the wheel is in the preset position includes: The cantilever is unlocked from the connecting beam so that the cantilever can move relative to the connecting beam; The driving member drives the cantilever to move along the connecting beam so that the wheel is in the preset position; The cantilever and the connecting beam are locked to prevent the cantilever from moving relative to the connecting beam.

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