CN112623035A - Reverse tricycle logistics vehicle chassis and logistics vehicle - Google Patents

Abstract

The invention belongs to the technical field of logistics vehicles, and discloses an inverted three-wheeled logistics vehicle chassis and a logistics vehicle, wherein the inverted three-wheeled logistics vehicle chassis comprises a vehicle frame, a front wheel assembly and a rear wheel assembly, the front wheel assemblies are respectively connected to two sides of the front end of the vehicle frame in a pivoting manner, the rear wheel assembly is connected to the middle of the rear end of the vehicle frame in a pivoting manner to form an inverted three-wheeled structure, and the inverted three-wheeled logistics vehicle chassis further comprises: a front suspension provided at a front end of the frame; an integral front axle disposed between the front suspension and the pair of front wheel assemblies; and a rear suspension disposed between the frame and the rear wheel assembly. The inverted three-wheeled logistics vehicle chassis and the logistics vehicle provided by the invention are different from common four-wheeled vehicle structures, a rear axle is omitted to simplify the chassis structure, the chassis is light, the chassis production and maintenance cost can be reduced, the stability, the safety and the waterproofness are greatly improved, and the transportation and performance requirements of the unmanned logistics vehicle are met.

Description

Reverse tricycle logistics vehicle chassis and logistics vehicle

Technical Field

The invention relates to the technical field of logistics vehicles, in particular to a chassis of an inverted three-wheeled logistics vehicle and the logistics vehicle.

Background

The miniature unmanned logistics vehicle is suitable for short-distance logistics, express delivery and vending operations in closed scenes such as factories, parks, school districts and the like, and is also suitable for public road security patrol, retail distribution and the like, the transported goods have the characteristics of small size and light weight, and the service objects are popular residents.

The miniature unmanned commodity circulation car on the existing market is mostly the form on four-wheel chassis, and the chassis structure is comparatively complicated, uses integral rear axle, and spare part is also more, and the lightweight inadequately, and suspension frame and rear axle cost are higher.

Therefore, the above problems need to be solved.

Disclosure of Invention

The invention aims to provide a reverse three-wheeled logistics vehicle chassis and a logistics vehicle, and aims to solve the problems of complex structure, heaviness and high cost of the existing miniature unmanned logistics vehicle chassis.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a three-wheeled logistics vehicle chassis falls, includes frame, front wheel subassembly and rear wheel subassembly, and is a pair of front wheel subassembly pivot connection respectively in the front end both sides of frame, one rear wheel subassembly pivot connection in the rear end middle part of frame to form the structure of falling the tricycle, it still includes to fall three-wheeled logistics vehicle chassis:

a front suspension provided at a front end of the frame;

an integral front axle disposed between the front suspension and the pair of front wheel assemblies; and

and the rear suspension is arranged between the frame and the rear wheel assembly.

Preferably, the rear wheel assembly includes:

a rear wheel pivotally connected to said rear suspension; and

and the hub motor is arranged on the rear wheel and is used for driving the rear wheel to rotate.

Preferably, the rear wheel assembly includes:

a pair of rear wheels each pivotally connected to the rear suspension; and

and the pair of hub motors are respectively arranged on the pair of rear wheels and are respectively used for driving the pair of rear wheels to rotate.

Preferably, the rear wheel assembly includes:

a pair of rear wheels pivotally connected to the pair of rear suspensions, respectively; and

and the pair of hub motors are respectively arranged on the pair of rear wheels and are respectively used for driving the pair of rear wheels to rotate.

Preferably, a pair of the rear wheel spaces are provided, a pair of the rear suspensions are provided on opposite sides of the pair of the rear wheels, respectively, and each of the rear suspensions includes:

the arm A comprises a first arm and a second arm which form a fixed included angle, the included angle between the first arm and the second arm is pivoted with the rear wheel assembly, and the end parts of the first arm and the second arm which are deviated from each other are hinged with the frame; and

and the shock absorber is connected between the A arm and the frame.

Preferably, the front suspension is a leaf spring front suspension.

Preferably, the chassis of the inverted three-wheeled logistics vehicle further comprises a P-EPS steering mechanism, and the P-EPS steering mechanism is in transmission connection with a knuckle arm of the front wheel assembly.

Preferably, the reverse three-wheeled logistics vehicle chassis further comprises a pair of anti-collision beams, and the pair of anti-collision beams are respectively arranged at the front end and the rear end of the vehicle frame.

Preferably, the impact beam is provided with a detection element for detecting an external obstacle.

In order to achieve the purpose, the invention also adopts the following technical scheme:

a logistics vehicle comprises the reverse three-wheeled logistics vehicle chassis.

The invention has the beneficial effects that:

the chassis of the inverted three-wheeled logistics vehicle is different from a common four-wheeled vehicle structure, a rear axle is omitted, the chassis structure is simplified, the chassis is light, the chassis production and maintenance cost can be reduced, meanwhile, the stability, the safety and the waterproofness are greatly improved, and the transportation and performance requirements of the unmanned logistics vehicle are met.

Drawings

FIG. 1 is a schematic perspective view of a chassis of an inverted three-wheeled logistics vehicle in an embodiment of the invention;

FIG. 2 is a top view of a chassis of an inverted three-wheeled logistics vehicle in an embodiment of the present invention;

FIG. 3 is a side view of a chassis of an inverted three-wheeled logistics vehicle in an embodiment of the present invention;

FIG. 4 is a schematic view of the connection of the front wheel assembly, the front suspension and the integrated front axle in an embodiment of the present invention;

fig. 5 is a schematic view of a connecting structure of the rear wheel assembly and the rear suspension in the embodiment of the invention.

In the figure:

1. a frame; 11. a stringer; 12. a frame;

2. a front wheel assembly; 21. a front wheel; 22. a front hub; 23. a brake disc; 24. a knuckle; 25. a kingpin; 26. a brake caliper;

3. a rear wheel assembly; 31. a rear wheel; 32. a hub motor;

4. a front suspension;

5. an integral front axle;

6. a rear suspension; 61. an arm A; 611. a first arm; 612. a second arm; 62. a shock absorber;

7. a P-EPS steering mechanism; 71. a steering ball head;

8. an impact beam.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The present embodiment provides a logistics vehicle, which includes a chassis and a container (or a rack, a pallet, etc.) fixed on the chassis, wherein the container mainly plays a role of loading, shielding and protecting goods, and therefore, the main weight and construction cost of the logistics vehicle are in the chassis.

In order to simplify the structure of the logistics vehicle, make the logistics vehicle light and reduce the cost, the logistics vehicle of the embodiment adopts the reverse three-wheeled logistics vehicle chassis, and the reverse three-wheeled logistics vehicle chassis is specifically described below.

Referring to fig. 1 to 5, the inverted three-wheeled logistics vehicle chassis includes a vehicle frame 1,front wheel assemblies 2 andrear wheel assemblies 3, wherein thefront wheel assemblies 2 are respectively pivotally connected to two sides of the front end of the vehicle frame 1, and therear wheel assemblies 3 are pivotally connected to the middle of the rear end of the vehicle frame 1 to form an inverted three-wheeled structure. The chassis of the reverse three-wheeled logistics vehicle further comprises a front suspension 4, an integral front axle 5 and arear suspension 6, wherein the front suspension 4 is arranged at the front end of the vehicle frame 1, the integral front axle 5 is arranged between the front suspension 4 and the pair offront wheel assemblies 2, and therear suspension 6 is arranged between the vehicle frame 1 and therear wheel assemblies 3.

By means of the structure, the inverted three-wheeled logistics vehicle chassis is different from a common four-wheeled vehicle type structure, a rear axle structure is omitted, the chassis structure is simplified, the chassis is light in weight, the chassis production and maintenance cost can be reduced, meanwhile, the stability, the safety and the waterproofness are greatly improved, and the transportation and performance requirements of the unmanned logistics vehicle are met.

Specifically, referring to fig. 1 to 3, in the present embodiment, the frame 1, which serves as a base of a mounting structure for other mechanisms of the chassis of the three-wheeled logistics vehicle, generally includes a pair oflongitudinal beams 11 disposed along the length direction of the logistics vehicle and aframe 12 connected to the middle sections of the pair oflongitudinal beams 11, wherein the upper surface of theframe 12 cooperates with thelongitudinal beams 11 to form a carrying surface for carrying a cargo box. A space in which the vehicle-mounted battery, the electric and control system can be placed is formed in theframe 12, the pair offront wheel assemblies 2 are provided on the front side of theframe 12, and therear wheel assemblies 3 are provided on the rear side of theframe 12.

Referring to fig. 4, a pair offront wheel assemblies 2 are pivotally connected to both ends of an integrated front axle 5, respectively, and each of thefront wheel assemblies 2 includes afront wheel 21, afront wheel hub 22, abrake disc 23, aknuckle 24, and the like, wherein theknuckle 24 is pivotally connected to the integrated front axle 5 by akingpin 25. A pair of front suspensions 4 are symmetrically disposed on both sides of the long axis for connecting the integrated front axle 5 and the frame 1.

The front suspension 4 is preferably a plate spring front suspension, two ends of which are respectively hinged to the front end of thelongitudinal beam 11 and the front side part of theframe 12, the middle part of the plate spring front suspension and the bridge body of the integrated front axle 5 are bolted and fixed through U-shaped bolts so as to allow jumping between the integrated front axle 5 and the frame 1 during the logistic vehicle running process, and the plate spring front suspension is light in weight, so that the chassis is further lightened.

In this embodiment, the chassis of the inverted three-wheeled logistics vehicle is configured with an electronic braking system, the electronic braking system includes abraking caliper 26 electrically connected to a vehicle-mounted CDCU (communication Digital Control Unit), thebraking caliper 26 straddles the outer edge of thebrake disc 23, so as to drive the caliper block to move towards thebrake disc 23 after the CDCU issues a braking instruction, so as to contact and rub with thebrake disc 23 and form a braking torque, thereby ensuring the driving safety of the logistics vehicle.

Preferably, the chassis of the inverted three-wheeled logistics vehicle drives the pair offront wheels 21 to steer by adopting a P-EPS steering mechanism 7 (a gear type electric power steering system), and specifically, steering ball heads 71 at two ends of the P-EPS steering mechanism 7 are respectively in ball joint with steering knuckle arms 241 of steeringknuckles 24 of the pair offront wheel assemblies 2, so that after a steering command is given by a CDCU, the P-EPS steering mechanism 7 can drive the pair offront wheels 21 to deflect leftwards or rightwards. The P-EPS steering mechanism 7 has the characteristics of small size, light weight and wire control, can be directly installed on the axle body of the integral front axle 5, contributes to further lightening the chassis, and ensures that the logistics vehicle can be driven freely.

Further, this three-wheeled commodity circulation vehicle chassis of falling still includes a pair ofanticollision roof beam 8, and a pair ofanticollision roof beam 8 sets up respectively in frame 1 front and back both ends, for avoiding the unexpected collision in the commodity circulation car goes, can be provided with the detecting element who is used for surveying outside barrier on theanticollision roof beam 8. Specifically, the detecting element can be pressure sensor, laser/infrared distance measuring sensor etc to make the CDCU can judge whether there is the barrier in the front rear of the commodity circulation car based on detecting element's feedback signal, thereby in good time brake, dodge, guarantee the safety of traveling.

Referring to fig. 5, in the present embodiment, therear wheel assembly 3 includes a pair ofrear wheels 31 and a pair ofhub motors 32, and the pair ofrear wheels 31 are pivotally connected to the pair ofrear suspensions 6, respectively; the pair of in-wheel motors 32 are respectively arranged on the pair ofrear wheels 31 to be respectively used for driving the pair ofrear wheels 31 to rotate, and the space occupation of the power system of the chassis of the inverted three-wheel logistics vehicle can be greatly reduced.

Based on the characteristics of low rotating speed and high torque of the hub motor, if the climbing and acceleration performances under the same condition are required to be met, the motor needs larger motor power to run, but the motor does not need the large power when running at a constant speed, so that the power and the cost for type selection are wasted. Therefore, in the present embodiment, the pair ofrear wheels 31 are driven by the pair of in-wheel motors 32, respectively, and the CDCU can control the two in-wheel motors 32 to operate simultaneously in the driving conditions such as starting, ascending or heavy load when a large torque is required; when the logistics vehicle runs at a constant speed or has a small load, the CDCU controls thesingle hub motor 32 to work, theother hub motor 32 follows up, no torque is output, the power system is redundant, and the power consumption is saved.

With continued reference to fig. 5, a pair ofrear wheels 31 are spaced apart from each other, a pair ofrear suspensions 6 are respectively disposed on opposite sides of the pair ofrear wheels 31, and eachrear suspension 6 includes an a-arm 61 and ashock absorber 62. TheA arm 61 comprises afirst arm 611 and asecond arm 612 which form a fixed included angle, the included angle between thefirst arm 611 and thesecond arm 612 is pivoted with therear wheel assembly 3, the end parts of thefirst arm 611 and thesecond arm 612, which are opposite, are hinged with the frame 1, and theshock absorber 62 is connected between theA arm 61 and the frame 1. Specifically, thefirst arm 611 and thesecond arm 612 are hinged to the rear side portion of theframe 12 of the vehicle frame 1, and the shock absorber 62 (e.g., a spring shock absorber) is hinged to theside member 11 to allow therear wheel assembly 3 to bounce relative to the vehicle frame 1 during traveling of the utility vehicle. Therear suspension 6 including the a-arm 61 and theshock absorber 62 has a simple structure and a reliable strength.

In an alternative embodiment, the pair ofrear wheels 31 may be both pivotally connected together to onerear suspension 6, and therear suspension 6 may adopt an M-frame structure or the like, which is not particularly limited herein. In another alternative embodiment, therear wheel assembly 3 also comprises only onerear wheel 31 and onehub motor 32, therear wheel 31 being pivotally connected to therear suspension 6, thehub motor 32 being arranged at therear wheel 31 and being adapted to drive therear wheel 31 in rotation. That is, the present embodiment does not limit the specific number of therear wheels 31.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides a three wheel logistics vehicle chassis falls, includes frame (1), front wheel subassembly (2) and rear wheel subassembly (3), its characterized in that, a pair of front wheel subassembly (2) respectively pivotal connection in the front end both sides of frame (1), one rear wheel subassembly (3) pivotal connection in the rear end middle part of frame (1) to form the structure of falling the tricycle, it still includes to fall three wheel logistics vehicle chassis:

a front suspension (4) provided at the front end of the frame (1);

an integral front axle (5) disposed between the front suspension (4) and the pair of front wheel assemblies (2); and

and a rear suspension (6) disposed between the frame (1) and the rear wheel assembly (3).

2. The inverted three-wheeled logistics vehicle chassis of claim 1, wherein the rear wheel assembly (3) comprises:

a rear wheel (31) pivotally connected to the rear suspension (6); and

the hub motor (32) is arranged on the rear wheel (31), and the hub motor (32) is used for driving the rear wheel (31) to rotate.

3. The inverted three-wheeled logistics vehicle chassis of claim 1, wherein the rear wheel assembly (3) comprises:

a pair of rear wheels (31) each pivotally connected to the rear suspension (6); and

and the pair of hub motors (32) are respectively arranged on the pair of rear wheels (31), and the pair of hub motors (32) are respectively used for driving the pair of rear wheels (31) to rotate.

4. The inverted three-wheeled logistics vehicle chassis of claim 1, wherein the rear wheel assembly (3) comprises:

a pair of rear wheels (31) pivotally connected to the pair of rear suspensions (6), respectively; and

and the pair of hub motors (32) are respectively arranged on the pair of rear wheels (31), and the pair of hub motors (32) are respectively used for driving the pair of rear wheels (31) to rotate.

5. The inverted three-wheeled logistics vehicle chassis of claim 4, wherein a pair of the rear wheels (31) are arranged at intervals, a pair of the rear suspensions (6) are respectively arranged at the opposite sides of the pair of the rear wheels (31), and each rear suspension (6) comprises:

the A arm (61) comprises a first arm (611) and a second arm (612) which are fixed at an included angle, the included angle between the first arm (611) and the second arm (612) is pivoted with the rear wheel assembly (3), and the end parts of the first arm (611) and the second arm (612) which are opposite to each other are hinged with the frame (1); and

and a shock absorber (62) connected between the A-arm (61) and the frame (1).

6. The inverted tricycle chassis according to claim 1, characterised in that the front suspension (4) is a leaf spring front suspension.

7. The inverted triwheel logistics vehicle chassis of claim 1, further comprising a P-EPS steering mechanism (7), wherein the P-EPS steering mechanism (7) is in driving connection with the knuckle arm (241) of the front wheel assembly (2).

8. The inverted three-wheeled logistics vehicle chassis of claim 1, further comprising a pair of anti-collision beams (8), wherein the pair of anti-collision beams (8) are respectively arranged at the front end and the rear end of the vehicle frame (1).

9. Inverted tricycle logistics vehicle chassis according to claim 8, characterized in that the impact beam (8) is provided with detection elements for detecting external obstacles.

10. A logistics vehicle, characterized in that it comprises the inverted three-wheeled logistics vehicle chassis of any one of claims 1 to 9.

Images