Chassis and transport vehicle having the same

Abstract

The embodiment of the present invention relates to a chassis and a transport vehicle having the chassis, wherein the chassis includes a mounting plate and a rear wheel mechanism, wherein at least two rear wheel mechanisms are symmetrically arranged on the mounting plate, and the rear wheel mechanism includes a first connecting member, a driving wheel and a rear wheel, wherein the first connecting member is rotatably connected to the mounting plate, and the driving wheel and the rear wheel are arranged on the first connecting member and are respectively located on both sides of the rotation connection between the first connecting member and the mounting plate, so that the driving wheel and the rear wheel can perform a lever movement relative to the mounting plate under the drive of the first connecting member. The embodiment of the present invention can achieve that when the transport vehicle is traveling on uneven ground, each wheel can always maintain contact with the ground using the lever principle, thereby achieving the purpose of shock absorption and preventing the problem of the driving wheel slipping, thereby improving the driving stability of the transport vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of transport equipment, and in particular to a chassis and a transport vehicle having the chassis. Background Art

[0002] The wheels on the chassis of existing transport trucks are independent of each other, that is, each wheel moves separately. However, during the movement of the transport truck, due to the uneven ground, some wheels may not be able to touch the ground, causing the transport truck to vibrate or the driving wheel to slip, making the transport truck unable to be used normally. In response to the above problem, although some existing transport trucks use springs as shock absorbers at the driving wheel installation position to solve the problem, the reciprocating motion of the springs will also cause the transport truck body to vibrate up and down, and cannot effectively solve the problem of vibration of the transport truck or slipping of the driving wheel when the ground is uneven.

[0003] The above information disclosed in the Background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is known to a person of ordinary skill in the art. Summary of the invention

[0004] In view of this, an embodiment of the present invention provides a chassis and a transport vehicle having the chassis to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0005] The technical solution of the embodiment of the present invention is achieved as follows:

[0006] According to a first aspect of the present invention, there is provided a chassis, comprising:

[0007] Mounting plate;

[0008] There are at least two rear wheel mechanisms that are symmetrically arranged on the mounting plate. The rear wheel mechanism has a first connecting member, a driving wheel and a rear wheel. The first connecting member is rotatably connected to the mounting plate. The driving wheel and the rear wheel are arranged on the first connecting member and are respectively located on both sides of the rotational connection between the first connecting member and the mounting plate, so that the driving wheel and the rear wheel can perform a lever movement relative to the mounting plate under the drive of the first connecting member.

[0009] In some embodiments, it also includes:

[0010] A front wheel mechanism is arranged on the mounting plate, and the front wheel mechanism has a second connecting member and at least two front wheels. The second connecting member is rotatably connected to the mounting plate. The two front wheels are arranged on the second connecting member and are respectively located on both sides of the rotational connection between the second connecting member and the mounting plate, so that the two front wheels can perform lever movement relative to the mounting plate under the drive of the second connecting member.

[0011] In some embodiments, each of the rear wheel mechanisms is located at two ends of the front wheel mechanism, and a rotation direction of the second connecting member relative to the mounting plate is perpendicular to a rotation direction of the first connecting member relative to the mounting plate.

[0012] In some embodiments, the second connecting member is rotatably connected to the mounting plate via a front wheel rotation mechanism, and the front wheel rotation mechanism includes a first axle fixing seat, a second axle fixing seat and a front wheel rotating shaft; the first axle fixing seat is connected to the second connecting member, the second axle fixing seat is connected to the mounting plate, and the two ends of the front wheel rotating shaft are respectively arranged in the first axle fixing seat and the second axle fixing seat.

[0013] In some embodiments, the first connecting member is rotatably connected to the mounting plate via a rear wheel rotation mechanism, and the rear wheel rotation mechanism includes a third axis fixing seat, a fourth axis fixing seat and a rear wheel rotating shaft; the third axis fixing seat is connected to the first connecting member, the fourth axis fixing seat is connected to the mounting plate, and both ends of the rear wheel rotating shaft are respectively arranged in the third axis fixing seat and the fourth axis fixing seat.

[0014] In some embodiments, the first connecting member is rotatably connected to the mounting plate via a rear wheel rotation mechanism, and the rear wheel rotation mechanism includes a third axis fixing seat, a fourth axis fixing seat, a rear wheel rotating shaft and a bearing seat; the third axis fixing seat is connected to the mounting plate via a first fixing frame, the fourth axis fixing seat is connected to the mounting plate via a second fixing frame, the bearing seat is connected to the first connecting member, the rear wheel rotating shaft passes through the bearing seat, and the two ends of the rear wheel rotating shaft are respectively arranged in the third axis fixing seat and the fourth axis fixing seat.

[0015] In some embodiments, the mounting plate is provided with a plurality of mounting openings, the second connecting member is arranged on the upper end surface of the mounting plate, and the front wheel extends to the lower end surface of the mounting plate through the mounting openings; the first connecting member is arranged on the upper end surface of the mounting plate, and the rear wheel extends to the lower end surface of the mounting plate through the mounting openings.

[0016] In some embodiments, both the front wheels and the rear wheels are universal wheels.

[0017] In some embodiments, the rear wheel mechanism further includes a motor, and an output end of the motor is connected to the driving wheel to drive the driving wheel to rotate.

[0018] According to a second aspect of the present invention, there is provided a transport vehicle comprising a chassis as described in any one of the above embodiments.

[0019] Since the embodiment of the present invention adopts the above technical solution, it has the following advantages: when the transport vehicle is traveling on uneven ground, each wheel can always maintain contact with the ground by utilizing the lever principle, thereby achieving the purpose of shock absorption and preventing the driving wheel from slipping, thereby improving the driving stability of the transport vehicle.

[0020] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present invention and should not be regarded as limiting the scope of the present invention.

[0022] Figure 1 Schematic diagram of the overall structure of the chassis of an embodiment of the present invention.

[0023] Figure 2 for Figure 1 Exploded diagram.

[0024] Figure 3 It is an exploded structural diagram of the front wheel mechanism according to an embodiment of the present invention.

[0025] Figure 4 The figure is a motion principle diagram of the front wheel mechanism according to an embodiment of the present invention.

[0026] Figure 5 Schematic diagram of the structure of the rear wheel mechanism according to an embodiment of the present invention.

[0027] Figure 6 The figure is a motion principle diagram of the rear wheel mechanism according to an embodiment of the present invention.

[0028] Figure 7 Schematic diagram of the structure of the first connecting member according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0030] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0031] In a first aspect of the present invention, a chassis is provided, such as Figure 1 , Figure 2 As shown, it comprises: a mounting plate 1, a front wheel mechanism 2 and a rear wheel mechanism 3. The front wheel mechanism 2 and the rear wheel mechanism 3 are arranged on the mounting plate 1.

[0032] like Figure 3 As shown, the front wheel mechanism 2 has a second connecting member 21 and at least two front wheels 22. The second connecting member 21 is rotatably connected to the mounting plate 1, and the two front wheels 22 are arranged on the second connecting member 21 and are respectively located on both sides of the rotatable connection between the second connecting member 21 and the mounting plate 1. The two front wheels 22 can perform a lever motion relative to the mounting plate 1 under the drive of the second connecting member 21.

[0033] It should be noted that the two front wheels 22 are respectively located on both sides of the rotational connection between the second connecting member 21 and the mounting plate 1. It can be understood that the relative rotation between the second connecting member 21 and the mounting plate 1 is a rotation around an infinitely extended virtual axis, and the two front wheels 22 are respectively arranged on both sides of the virtual axis. Thus, the front wheels 22, the second connecting member 21 and the mounting plate 1 form a lever mechanism after being connected. Among them, the second connecting member 21 is a "lever", the two front wheels 22 are respectively the two ends of the "lever", and the rotational connection between the second connecting member 21 and the mounting plate 1 is the fulcrum of the "lever" (such as Figure 4 When passing through uneven ground, when one of the front wheels 22 is lifted up, the other front wheel 22 can always keep in contact with the ground under the action of the lever, thereby preventing the front wheel mechanism 2 of the chassis from vibrating or slipping.

[0034] like Figure 5 As shown, there are at least two rear wheel mechanisms 3 symmetrically arranged on the mounting plate 1. The rear wheel mechanism 3 has a first connecting member 31, a driving wheel 32 and a rear wheel 33. The first connecting member 31 is rotatably connected to the mounting plate 1. The driving wheel 32 and the rear wheel 33 are arranged on the first connecting member 31 and are respectively located on both sides of the rotation connection between the first connecting member 31 and the mounting plate 1. So that the driving wheel 32 and the rear wheel 33 are driven by the first connecting member 31 to perform a lever motion relative to the mounting plate 1.

[0035] It should be noted that the driving wheel 32 and the rear wheel 33 are respectively located on both sides of the rotational connection between the first connecting member 31 and the mounting plate 1. It can be understood that the relative rotation between the first connecting member 31 and the mounting plate 1 is a rotation around an infinitely extended virtual axis, and the driving wheel 32 and the rear wheel 33 are respectively arranged on both sides of the virtual axis. Thus, the driving wheel 32, the rear wheel 33, the first connecting member 31 and the mounting plate 1 form a lever mechanism after being connected. Among them, the first connecting member 31 is a "lever", the driving wheel 32 and the rear wheel 33 are respectively the two ends of the "lever", and the rotational connection between the first connecting member 31 and the mounting plate 1 is the fulcrum of the "lever" (such as Figure 6 When passing through uneven ground, when the rear wheel 33 is lifted up, the first connecting member 31 tilts, and the driving wheel 32 moves downward under the action of the lever, so that the driving wheel 32 can always keep in contact with the ground, and the chassis is still evenly stressed, thereby improving the stability of the chassis and preventing the rear wheel mechanism 3 of the chassis from vibrating or slipping.

[0036] In one embodiment, Figure 1 As shown, each rear wheel mechanism 3 is respectively located at both ends of the front wheel mechanism 2. The rotation direction of the first connecting member 31 relative to the mounting plate 1 is perpendicular to the rotation direction of the second connecting member 21 relative to the mounting plate 1. That is, the virtual axis around which the second connecting member 21 rotates is perpendicular to the virtual axis around which the first connecting member 31 rotates.

[0037] In a variable embodiment, an auxiliary wheel mechanism (not shown in the figure) can be arranged between the rear wheel mechanisms 3, i.e., in the middle of the mounting plate 1. The specific structure of the auxiliary wheel mechanism can refer to the structure of the rear wheel mechanism 3 and the connection method with the mounting plate 1. Under the premise of ensuring the stability of the center of gravity of the overall movement of the chassis, the movement stability is improved.

[0038] In one embodiment, the second connecting member 21 is rotatably connected to the mounting plate 1 via a front wheel rotating mechanism 4. The front wheel rotating mechanism 4 can adopt any structure in the prior art as long as the relative rotation of the second connecting member 21 and the mounting plate 1 can be achieved.

[0039] For example, Figure 1 , Figure 2 As shown, the front wheel rotation mechanism 4 includes a first shaft fixing seat 41, a second shaft fixing seat 42 and a front wheel rotating shaft 43. The first shaft fixing seat 41 is connected to the second connecting member 21, the second shaft fixing seat 42 is connected to the mounting plate 1, and both ends of the front wheel rotating shaft 43 are rotatably arranged in the first shaft fixing seat 41 and the second shaft fixing seat 42 respectively. Among them, the first shaft fixing seat 41 can be directly connected to the second connecting member 21, and can also be connected to the second connecting member 21 through a connecting plate 44.

[0040] In one embodiment, the first connecting member 31 is rotatably connected to the mounting plate 1 via a rear wheel rotating mechanism 5. The rear wheel rotating mechanism 5 can adopt any structure in the prior art as long as the relative rotation between the first connecting member 31 and the mounting plate 1 can be achieved.

[0041] In a specific embodiment, Figure 1 , Figure 2 , Figure 5 As shown, the rear wheel rotation mechanism 5 includes a third shaft fixing seat 51, a fourth shaft fixing seat 52, a rear wheel rotating shaft 53 and a bearing seat 54. The third shaft fixing seat 51 is connected to the mounting plate 1 through a first fixing frame 61. The fourth shaft fixing seat 52 is connected to the mounting plate 1 through a second fixing frame 62. The bearing seat 54 is connected to the first connecting member 31, the rear wheel rotating shaft 53 passes through the bearing seat 54, and the two ends of the rear wheel rotating shaft 53 are rotatably arranged in the third shaft fixing seat 51 and the fourth shaft fixing seat 52 respectively.

[0042] In a variable embodiment, the rear wheel rotation mechanism 5 includes a third shaft fixing seat 51, a fourth shaft fixing seat 52 and a rear wheel rotating shaft 53. The third shaft fixing seat 51 is connected to the first connecting member 31, the fourth shaft fixing seat 52 is connected to the mounting plate 1, and both ends of the rear wheel rotating shaft 53 are rotatably arranged in the third shaft fixing seat 51 and the fourth shaft fixing seat 52 respectively.

[0043] In one embodiment, Figure 1 , Figure 2 As shown, a plurality of mounting openings 11 are provided on the mounting plate 1. The second connecting member 21 is provided on the upper end surface 12 of the mounting plate 1, and the front wheel 22 extends to the lower end surface 13 of the mounting plate 1 through the mounting openings 11. The first connecting member 31 is provided on the upper end surface 12 of the mounting plate 1, and the rear wheel 33 extends to the lower end surface 13 of the mounting plate 1 through the mounting openings 11. The opening shape of the mounting openings 11 is adapted to the shapes of the front wheel 22 and the rear wheel 33.

[0044] In one embodiment, two mounting grooves 14 are oppositely formed on the mounting plate 1. The two driving wheels 32 are respectively disposed in the mounting grooves 14 to reduce the overall size of the chassis so that the driving wheels 32 can be located within the outer edge contour of the mounting plate 1 and will not protrude from the mounting plate 1.

[0045] In one embodiment, the structural shapes of the second connecting member 21 and the first connecting member 31 may adopt any structural shapes in the prior art as long as the functions described in the above embodiments can be achieved.

[0046] For example, Figure 3As shown, the second connecting member 21 may include a first horizontal plate 211, two connecting plates 212 connected to both ends of the first horizontal plate 211 and perpendicular to the first horizontal plate 211, and two second horizontal plates 213 respectively connected to the ends of the two connecting plates 212 and perpendicular to the connecting plates 212. The two second horizontal plates 213 are arranged opposite to each other and extend outwardly from both ends of the first horizontal plate 211. The front wheel 22 is connected to the second horizontal plates 213. In order to improve the strength of the second connecting member 21, a reinforcing rib may be provided between the second horizontal plate 213 and the connecting plate 212.

[0047] like Figure 7 As shown, the first connecting member 31 may include a first vertical plate 311, and a mounting hole 314 is provided on one end of the first vertical plate 311 for mounting the driving wheel 32. The other end of the first vertical plate 311 is connected to the L-shaped plate 312. One end 3121 of the L-shaped plate 312 is connected to the other end of the first vertical plate 311, and the other end 3122 of the L-shaped plate 312 extends outwardly along the length direction of the first vertical plate 311 in a direction away from the other end of the first vertical plate 311. The other end 3122 of the L-shaped plate 312 is connected to the rear wheel 33. A support plate 313 perpendicular to the first vertical plate is connected to the top of the first vertical plate 311, and the support plate 313 is connected to the bearing seat 54. In order to improve the strength of the first connecting member 31, reinforcing ribs may be provided at the connection between the first vertical plate 311 and the L-shaped plate 312, and at the connection between the first vertical plate 311 and the support plate 313.

[0048] In one embodiment, the rear wheel mechanism 3 further includes a motor 34, the output end of which is connected to the driving wheel 32 to drive the driving wheel 32 to rotate. In order to make the speed of the driving wheel 32 more adjustable, a speed change mechanism or a speed reduction mechanism may be installed between the motor 34 and the driving wheel 32 to meet the driving requirements of different working conditions.

[0049] In one embodiment, the front wheels 22 and the rear wheels 33 are all universal wheels, so that the chassis can rotate and travel in all directions. In addition, the front wheels 22 and the rear wheels 33 are selected to be the same type of wheels, which can enhance the uniformity of chassis design and reduce the design difficulty while ensuring performance.

[0050] A second aspect of the present invention provides a transport vehicle comprising the chassis of any one of the above embodiments.

[0051] The chassis and the transport vehicle of the embodiment of the present invention have two front wheels 22 connected as a whole by the second connecting member 21, the driving wheel 32 and the rear wheel 33 connected as a whole by the first connecting member 31, and the second connecting member 21 and the first connecting member 31 are rotatably connected to the mounting plate 1. Therefore, when the transport vehicle is traveling on uneven ground, each wheel (front wheel 22, driving wheel 32 and rear wheel 33) can always maintain contact with the ground by utilizing the lever principle, thereby achieving the purpose of shock absorption and preventing the driving wheel from slipping, thereby improving the driving stability of the transport vehicle.

[0052] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0053] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0054] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "towards" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0056] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of various changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A chassis, characterized in that: include: Mounting plate; The rear wheel mechanism comprises at least two and symmetrically arranged on the mounting plate, the rear wheel mechanism comprising a first connecting member, a driving wheel and a rear wheel, the first connecting member being arranged on the upper end surface of the mounting plate and being rotatably connected to the mounting plate, the driving wheel and the rear wheel being arranged on the first connecting member and being respectively located on both sides of the rotatably connected part between the first connecting member and the mounting plate, so that the driving wheel and the rear wheel can perform a lever movement relative to the mounting plate under the drive of the first connecting member; the rear wheel is arranged relative to the driving wheel at a position close to the center of the chassis along the axis direction of the rear wheel axle; The mounting plate is provided with opposite mounting grooves and a plurality of mounting openings, the driving wheel is arranged in the mounting groove, the driving wheel is located within the outer edge contour of the mounting plate, the rear wheel extends to the lower end surface of the mounting plate through the mounting openings, wherein the opening shape of the mounting openings is adapted to the shape of the rear wheel; The first connecting member includes a first vertical plate; a mounting hole is provided on one end of the first vertical plate for mounting the driving wheel, and the other end is connected to the L-shaped plate; one end of the L-shaped plate is connected to the other end of the first vertical plate, and the other end extends outwardly along the length direction of the first vertical plate in a direction away from the other end of the first vertical plate and is connected to the rear wheel; The first connecting member is rotatably connected to the mounting plate through a rear wheel rotating mechanism, and the rear wheel rotating mechanism includes a third shaft fixing seat, a fourth shaft fixing seat, a rear wheel rotating shaft and a bearing seat; the third shaft fixing seat is connected to the mounting plate through a first fixing frame, the fourth shaft fixing seat is connected to the mounting plate through a second fixing frame, the bearing seat is connected to the first connecting member, the rear wheel rotating shaft passes through the bearing seat, and the two ends of the rear wheel rotating shaft are respectively arranged in the third shaft fixing seat and the fourth shaft fixing seat; A support plate perpendicular to the first vertical plate is connected to the top of the first vertical plate, and the support plate is connected to the bearing seat; reinforcing ribs are provided at the connection between the first vertical plate and the L-shaped plate, and at the connection between the first vertical plate and the support plate; The chassis also includes: A front wheel mechanism is arranged on the mounting plate, the front wheel mechanism comprises a second connecting member and at least two front wheels, the second connecting member is rotatably connected to the mounting plate, the two front wheels are arranged on the second connecting member and are respectively located on both sides of the rotation connection between the second connecting member and the mounting plate, so that the two front wheels are driven by the second connecting member to perform a lever motion relative to the mounting plate; Wherein, each of the rear wheel mechanisms is located at both ends of the front wheel mechanism, and the rotation direction of the second connecting member relative to the mounting plate is perpendicular to the rotation direction of the first connecting member relative to the mounting plate; the second connecting member is arranged on the upper end surface of the mounting plate, and the front wheel extends to the lower end surface of the mounting plate through the mounting opening.

2. The chassis according to claim 1, characterized in that The second connecting member is rotatably connected to the mounting plate through a front wheel rotating mechanism, and the front wheel rotating mechanism includes a first axle fixing seat, a second axle fixing seat and a front wheel rotating shaft; the first axle fixing seat is connected to the second connecting member, the second axle fixing seat is connected to the mounting plate, and the two ends of the front wheel rotating shaft are respectively arranged in the first axle fixing seat and the second axle fixing seat.

3. The chassis according to claim 1, characterized in that The front wheel and the rear wheel are both universal wheels.

4. The chassis according to any one of claims 1 to 3, characterized in that: The rear wheel mechanism also includes a motor, and an output end of the motor is connected to the driving wheel to drive the driving wheel to rotate.

5. A transport vehicle, characterized in that: Comprising a chassis as described in any one of claims 1-4.

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