Chassis layout structure of a dual-drive dual-steering electric transport vehicle without a cab

Abstract

The present invention relates to the field of automobile frames, and in particular to a chassis layout structure of a dual-drive dual-steering electric transport vehicle without a cab. The chassis layout structure of the dual-drive dual-steering electric transport vehicle without a cab includes a frame assembly and a steering drive system, a steering oil system, a motor cooling assembly, a battery assembly, an air compressor, an air cylinder assembly and a battery assembly installed on the frame assembly. The steering drive system is provided with two sets, and the two sets of steering drive systems are respectively a front steering drive system and a rear steering drive system; the chassis layout structure of the dual-drive dual-steering electric transport vehicle without a cab of the present invention realizes the steering and driving functions of the front and rear four wheels by arranging two sets of steering drive systems, and the chassis structure is reasonably and compactly arranged, so that the load-bearing weight on the chassis frame is evenly distributed, thereby improving the stability of the whole vehicle.

Description

Technical Field

[0001] The invention relates to the field of automobile frames, and in particular to a chassis arrangement structure of a dual-drive dual-steering electric transport vehicle without a cab. Background Art

[0002] In ports and factories with fixed vehicle transport routes and single working conditions, traditional trucks are still used to load and transport goods. The front end of this traditional diesel truck is a cab, the rear is a cargo box, and the chassis layout is generally front steering wheels, rear drive wheels, front engine, and rear drive axle. The use of traditional trucks has high operating costs and low efficiency. Therefore, in order to improve the operating efficiency and reduce the operating costs of vehicles in ports and factories with fixed vehicle transport routes and single working conditions, cabless dual-drive electric transport vehicles are tried to load and transport goods in ports and factories with fixed vehicle transport routes and single working conditions. However, a reasonably arranged cabless dual-drive electric transport vehicle chassis has not yet been disclosed in the field of commercial vehicles. Summary of the invention

[0003] In order to solve the above problems, the purpose of the present invention is to provide a chassis layout structure of a dual-drive dual-steering electric transport vehicle without a cab, which realizes the steering and driving functions of the four front and rear wheels, and the various components of the chassis are arranged compactly and reasonably, and the weight bearing on the chassis frame is evenly distributed, thereby improving the stability of the entire vehicle.

[0004] To achieve the above-mentioned purpose, the chassis layout structure of the dual-drive dual-steering electric transport vehicle without a cab designed by the present invention includes a frame assembly and a steering drive system, a steering oil circuit system, a motor cooling assembly, a battery assembly, an air compressor, an air cylinder assembly and a battery assembly installed on the frame assembly, wherein the frame assembly is a frame body composed of a left longitudinal beam, a right longitudinal beam and a front circular tube beam, a first cross beam, a second cross beam, a third cross beam, a fourth cross beam, a fifth cross beam and a rear circular tube beam which are sequentially arranged between the left longitudinal beam and the right longitudinal beam from front to rear; it is characterized in that the steering drive system is provided with two sets, the two sets of steering drive systems are respectively a front steering drive system and a rear steering drive system, the front steering drive system includes a front leaf spring suspension, a front two leaf spring suspension, a front axle, two front wheels, a front drive shaft and a first motor, the two ends of the front leaf spring suspension are connected to the front end of the left longitudinal beam, the front two leaf spring suspensions are respectively connected to the front end of the left longitudinal beam, and the front two leaf spring suspensions are respectively connected to the front end of the left longitudinal beam. The two ends are connected to the front end of the right longitudinal beam, the middle part of the front leaf spring suspension and the middle part of the front two leaf spring suspensions are connected to the front axle through U-shaped bolts, the left and right ends of the front axle are respectively connected to the two front wheels, the first motor and the front axle are connected through the front drive shaft, the first motor is arranged between the second cross beam and the third cross beam, and the front axle is arranged between the front round tube beam and the first cross beam; the rear steering drive system includes a rear leaf spring suspension, a rear two leaf spring suspension, a rear axle, two rear wheels, a rear drive shaft and a second motor, the two ends of the rear leaf spring suspension are connected to the rear end of the left longitudinal beam, the two ends of the rear two leaf spring suspension are connected to the rear end of the right longitudinal beam, the middle part of the rear leaf spring suspension and the middle part of the rear two leaf spring suspension are connected to the rear axle through U-shaped bolts, the left and right ends of the rear axle are respectively connected to the two rear wheels, the second motor and the rear axle are connected through the rear drive shaft, the second motor is arranged between the third cross beam and the fourth cross beam, and the rear axle is arranged between the fifth cross beam and the rear round tube beam.

[0005] As a preferred embodiment, the steering oil circuit system is arranged in two sets, namely the first steering oil circuit system and the second steering oil circuit system. The first steering oil circuit system includes a first steering oil pump, a first steering oil tank and a first steering gear. The first steering oil pump is arranged between the front circular tube beam and the first cross beam, the first steering oil tank is arranged on the left side of the first steering oil pump, the first steering gear is arranged at the front end of the left longitudinal beam and the first steering gear is located in front of the front wheel; the second steering oil circuit system includes a second steering oil pump, a second steering oil tank and a second steering gear. The second steering oil pump is arranged between the rear circular tube beam and the fifth cross beam, the second steering oil tank is arranged on the right side of the second steering oil pump, and the second steering gear is arranged at the end of the right longitudinal beam and behind the rear wheel.

[0006] As a preferred solution, the motor cooling assembly is arranged in two sets, namely the first motor cooling assembly and the second motor cooling assembly. The first motor cooling assembly is arranged on the left longitudinal beam and located between the first cross beam and the second cross beam, and the first motor cooling assembly is connected to the first motor through a cooling pipe; the second motor cooling assembly is arranged on the right longitudinal beam and located between the fourth cross beam and the fifth cross beam, and the second motor cooling assembly is connected to the second motor through a cooling pipe.

[0007] As a preferred embodiment, the battery assembly is arranged in two sets, namely a first battery assembly installed in the middle of the left longitudinal beam and a second battery assembly installed in the middle of the right longitudinal beam, the first battery assembly includes a first bracket and multiple first batteries, the first bracket includes a first middle partition, the second middle partition divides the first bracket into an upper shelf for placing the first batteries and a lower shelf for placing the remaining first batteries; the second battery assembly includes a second bracket and multiple second batteries, the second bracket includes a second middle partition, the second middle partition divides the second bracket into an upper shelf for placing the first batteries and a lower shelf for placing the remaining second batteries.

[0008] As a preferred embodiment, the air tank assembly is arranged on the left longitudinal beam and located between the second battery assembly and the left rear wheel; the air compressor is arranged between the first cross beam and the second cross beam; the battery frame is arranged on the right longitudinal beam and located between the front right wheel and the second battery assembly.

[0009] As a preferred solution, the cross-sections of the left and right longitudinal beams in the length direction are both linear, a plurality of car connecting plates are evenly arranged along the length direction of the left longitudinal beam, and a plurality of car connecting plates are evenly arranged along the length direction of the right longitudinal beam, and no connection position for the cab is reserved on the left and right longitudinal beams.

[0010] As a preferred solution, integrated traction seats are installed on both the front circular tube beam and the rear circular tube beam.

[0011] The advantages of the present invention are as follows: compared with the chassis structure of the existing electric transport vehicle, the chassis layout structure of the cab-less dual-drive dual-steering electric transport vehicle of the present invention realizes the steering and driving functions of the front and rear four wheels by arranging two sets of steering drive systems, and the chassis structure is reasonably and compactly arranged, so that the load-bearing weight on the chassis frame is evenly distributed, thereby improving the stability of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view of the chassis arrangement structure of the double-drive double-steering electric transport vehicle without a cab of the present invention;

[0013] Figure 2 A side view of the chassis arrangement structure of the dual-drive dual-steering electric transport vehicle without a cab according to the present invention;

[0014] The components in the figure are numbered as follows: frame assembly 1, left longitudinal beam 11, right longitudinal beam 12, front round tube beam 13, first cross beam 14, second cross beam 15, third cross beam 16, fourth cross beam 17, fifth cross beam 18, rear round tube beam 19, steering drive system 2, front steering drive system 21, front leaf spring suspension 211, front two leaf spring suspension 212, front axle 213, front wheel 214, front drive shaft 215, first motor 216, rear steering drive system 22, rear leaf spring suspension 221, rear two leaf spring suspension 222, rear axle 223, rear wheel 224, rear drive shaft 225, second motor 226, steering oil circuit system 3, first steering oil Road system 31, first steering oil pump 311, first steering oil tank 312, first steering gear 313, second steering oil road system 32, second steering oil pump 321, second steering oil tank 322, second steering gear 323, motor cooling assembly 4, first motor cooling assembly 41 and second motor cooling assembly 42, battery assembly 5, first battery assembly 51, first bracket 511, first battery 512, second battery assembly 52, second bracket 521, second battery 522, air compressor 6, air cylinder assembly 7, air cylinder bracket 71, air cylinder 72, battery assembly 8, battery frame 81, electrical equipment 82, and carriage connecting plate 9. DETAILED DESCRIPTION

[0015] In order to better understand the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific examples.

[0016] Combination Figure 1 and Figure 2 As shown, the chassis layout structure of the cab-less dual-drive dual-steering electric transport vehicle of this embodiment includes a frame assembly 1 and two steering drive systems 2, two steering oil circuit systems 3, two motor cooling assemblies 4, two battery assemblies 5, an air compressor 6, an air cylinder assembly 7, and a battery assembly 8 installed on the frame assembly 1.

[0017] The vehicle frame assembly 1 is a frame body composed of a left longitudinal beam 11, a right longitudinal beam 12, and a front circular tube beam 13, a first cross beam 14, a second cross beam 15, a third cross beam 16, a fourth cross beam 17, a fifth cross beam 18, and a rear circular tube beam 19 which are sequentially arranged between the left longitudinal beam 11 and the right longitudinal beam 12 from front to rear. Integrated traction seats are installed on the front circular tube beam 13 and the rear circular tube beam 19, so that both the front and rear ends of the vehicle have traction functions. The left longitudinal beam 11 and the right longitudinal beam 12 are parallel to each other and are symmetrical about the center line of the frame as the axis of symmetry. The left longitudinal beam 11 and the right longitudinal beam 12 are symmetrical about the center line of the frame as the axis of symmetry. The frame assembly 1 has a simple overall structure and low cost.

[0018] Five car body connecting plates 9 are evenly arranged along the length direction of the left longitudinal beam 11, and five car body connecting plates 9 are evenly arranged along the length direction of the right longitudinal beam 12. The frame is connected to the cargo compartment through the car body connecting plates 9. No connection position for the cab is reserved on the left longitudinal beam 11 and the right longitudinal beam 12, so as to increase the loading capacity of the vehicle.

[0019] In order to realize the front and rear dual-drive and dual-steering functions of the electric vehicle, two steering drive systems 2 are arranged on the frame. The two steering drive systems 2 are respectively a front steering drive system 21 and a rear steering drive system 22. The front steering drive system 21 includes a front leaf spring suspension 211, a front second leaf spring suspension 212, a front axle 213, two front wheels 214, a front drive shaft 215 and a first motor 216; both ends of the front leaf spring suspension 211 are connected to the front end of the left longitudinal beam 11, and both ends of the front second leaf spring suspension 212 are connected to the right longitudinal beam 12, the middle parts of the front leaf spring suspension 211 and the middle parts of the front second leaf spring suspension 212 are connected to the front axle 213 through U-shaped bolts, the left and right ends of the front axle 213 are respectively connected to two front wheels 214, the first motor 216 and the front axle 213 are connected through a front transmission shaft 215, the first motor 216 is arranged between the second cross beam 15 and the third cross beam 16, the front axle 213 is arranged between the front circular tube beam 13 and the first cross beam 14, and the steering and driving functions of the front wheels 214 are realized through the front steering drive system 21. The rear steering drive system 22 includes a rear leaf spring suspension 221, a rear second leaf spring suspension 222, a rear axle 223, two rear wheels 224, a rear transmission shaft 225 and a second motor 226; both ends of the rear leaf spring suspension 221 are connected to the rear end of the left longitudinal beam 11, and both ends of the rear second leaf spring suspension 222 are connected to the rear end of the right longitudinal beam 12. The middle part of the rear leaf spring suspension 221 and the middle part of the rear second leaf spring suspension 222 are connected to the rear axle 223 through U-shaped bolts, and the left and right ends of the rear axle 223 are respectively connected to two rear wheels 224. The second motor 226 and the rear axle 223 are connected through the rear transmission shaft 225. The second motor 226 is arranged between the third cross beam 16 and the fourth cross beam 17, and the rear axle 223 is arranged between the fifth cross beam 18 and the rear round tube beam 19. The steering and driving functions of the rear wheels 224 are realized by the rear steering drive system 22. Therefore, in the chassis layout structure of the cab-less dual-drive dual-steering electric transport vehicle of this embodiment, two steering drive systems are arranged to realize the steering and driving functions of the front and rear four wheels, forming a 4X4 layout.

[0020] Matching the two steering drive systems, two steering oil circuit systems 3 are arranged on the vehicle frame, namely a first steering oil circuit system 31 and a second steering oil circuit system 32. The first steering oil circuit system 31 includes a first steering oil pump 311, a first steering oil tank 312 and a first steering gear 313. The first steering oil pump 311 is arranged between the front round tube beam 13 and the first cross beam 14, the first steering oil tank 312 is arranged on the left side of the first steering oil pump 311, the first steering gear 313 is arranged at the front end of the left longitudinal beam 11 and the first steering gear 313 is located in front of the front wheel 214; the second steering oil circuit system 32 includes a second steering oil pump 321, a second steering oil tank 322 and a second steering gear 323. The second steering oil pump 321 is arranged between the rear round tube beam 19 and the fifth cross beam 18, the second steering oil tank 322 is arranged on the right side of the second steering oil pump 321, and the second steering gear 323 is arranged at the end of the right longitudinal beam 12 and located behind the rear wheel 224.

[0021] To match the two steering drive systems, two motor cooling assemblies 4 are provided on the chassis, namely a first motor cooling assembly 41 and a second motor cooling assembly 42. The first motor cooling assembly 41 is arranged on the left longitudinal beam 11 and located between the first cross beam 14 and the second cross beam 15. The first motor cooling assembly 41 is connected to the first motor 216 through a cooling pipe; the second motor cooling assembly 42 is arranged on the right longitudinal beam 12 and located between the fourth cross beam 17 and the fifth cross beam 18. The second motor cooling assembly 42 is connected to the second motor 226 through a cooling pipe.

[0022] In addition, two battery assemblies 5 are provided on the frame assembly 1, namely a first battery assembly 51 installed in the middle of the left longitudinal beam 11 and a second battery assembly 522 installed in the middle of the right longitudinal beam 12. Figure 2As shown, the first battery assembly 51 includes a first bracket 511 and a first battery 512. There are three first batteries 512, two of which are placed on the upper layer of the first bracket 511, and the remaining first battery 512 is placed on the lower layer of the first bracket 511; the second battery assembly 52 includes a second bracket 521 and a second battery 522. Similar to the first battery assembly 51, two of the second batteries 522 are placed on the upper layer of the second bracket 521, and the remaining second battery 522 is placed on the lower layer of the second bracket 521. The arrangement of the left and right double-layer batteries can meet the battery capacity requirement of a maximum of 120 degrees of electricity, and the cruising range is long. The gas cylinder assembly 7 is arranged on the left longitudinal beam 11. The gas cylinder assembly 7 is located between the second battery assembly 52 and the left rear wheel. The gas cylinder assembly 7 includes a gas cylinder bracket 71 and a gas cylinder 72 installed on the gas cylinder bracket 71. The air compressor 6 is installed between the first cross beam 14 and the second cross beam 15. A battery frame 81 is installed on the right longitudinal beam 12 . The battery assembly 8 is located between the front right wheel and the second battery assembly 52 . The battery assembly 8 includes a battery frame 81 and electrical equipment 82 installed on the battery frame 81 .

[0023] Compared with the existing electric transport vehicles, the chassis layout structure of the dual-drive dual-steering electric transport vehicle without a cab of the present invention has the following advantages:

[0024] (1) The steering and driving functions of the front and rear four wheels are achieved by arranging two steering drive systems.

[0025] (2) By rationally arranging the positions of various components, the weight on the chassis frame is evenly distributed, thereby improving the stability of the vehicle.

[0026] (3) By designing a double-layer battery placement structure on the left and right longitudinal beams, it can meet the battery capacity requirement of a maximum of 120 kWh and provide a long cruising range.

[0027] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A chassis layout structure of a dual-drive dual-steering electric transport vehicle without a cab, comprising a frame assembly and a steering drive system, a steering oil system, a motor cooling assembly, a battery assembly, an air compressor, an air reservoir assembly and a battery assembly installed on the frame assembly, wherein the frame assembly is a frame frame composed of a left longitudinal beam, a right longitudinal beam and a front round tube beam, a first cross beam, a second cross beam, a third cross beam, a fourth cross beam, a fifth cross beam and a rear round tube beam arranged in sequence from front to back between the left longitudinal beam and the right longitudinal beam; characterized in that: The steering drive system is provided with two sets, which are respectively a front steering drive system and a rear steering drive system. The front steering drive system comprises a front leaf spring suspension, a front second leaf spring suspension, a front axle, two front wheels, a front drive shaft and a first motor. Both ends of the front leaf spring suspension are connected to the front end of the left longitudinal beam, and both ends of the front second leaf spring suspension are connected to the front end of the right longitudinal beam. The middle part of the front leaf spring suspension and the middle part of the front second leaf spring suspension are connected to the front axle through U-shaped bolts. The left and right ends of the front axle are respectively connected to the two front wheels. The first motor and the front axle are connected through the front drive shaft. The first motor is arranged on the second cross beam and the third cross beam. The front axle is arranged between the front round tube beam and the first cross beam; the rear steering drive system includes a rear leaf spring suspension, a rear second leaf spring suspension, a rear axle, two rear wheels, a rear transmission shaft and a second motor, both ends of the rear leaf spring suspension are connected to the rear end of the left longitudinal beam, both ends of the rear second leaf spring suspension are connected to the rear end of the right longitudinal beam, the middle part of the rear leaf spring suspension and the middle part of the rear second leaf spring suspension are connected to the rear axle through U-shaped bolts, the left and right ends of the rear axle are respectively connected to the two rear wheels, the second motor and the rear axle are connected through a rear transmission shaft, the second motor is arranged between the third cross beam and the fourth cross beam, and the rear axle is arranged between the fifth cross beam and the rear round tube beam; The cross-sections of the left longitudinal beam and the right longitudinal beam in the length direction are both linear, a plurality of car body connection plates are evenly arranged along the length direction of the left longitudinal beam, and a plurality of car body connection plates are evenly arranged along the length direction of the right longitudinal beam, and no connection position of the driver's cab is reserved on the left longitudinal beam and the right longitudinal beam; Integrated traction seats are installed on both the front round tube beam and the rear round tube beam.

2. The chassis layout structure of the dual-drive and dual-steering electric transport vehicle without a cab according to claim 1 is characterized in that: The steering oil circuit system is arranged in two sets, namely the first steering oil circuit system and the second steering oil circuit system. The first steering oil circuit system includes a first steering oil pump, a first steering oil tank and a first steering gear. The first steering oil pump is arranged between the front round tube beam and the first cross beam, the first steering oil tank is arranged on the left side of the first steering oil pump, and the first steering gear is arranged at the front end of the left longitudinal beam and the first steering gear is located in front of the front wheel. The second steering oil circuit system includes a second steering oil pump, a second steering oil tank and a second steering gear. The second steering oil pump is arranged between the rear circular tube beam and the fifth cross beam, the second steering oil tank is arranged on the right side of the second steering oil pump, and the second steering gear is arranged at the end of the right longitudinal beam and behind the rear wheels.

3. The chassis layout structure of the dual-drive and dual-steering electric transport vehicle without a cab according to claim 1 is characterized in that: The motor cooling assembly is arranged in two sets, namely the first motor cooling assembly and the second motor cooling assembly. The first motor cooling assembly is arranged on the left longitudinal beam and located between the first cross beam and the second cross beam, and the first motor cooling assembly is connected to the first motor through a cooling pipe; the second motor cooling assembly is arranged on the right longitudinal beam and located between the fourth cross beam and the fifth cross beam, and the second motor cooling assembly is connected to the second motor through a cooling pipe.

4. The chassis layout structure of the double-drive double-steering electric transport vehicle without a cab according to claim 1 is characterized in that: The battery assembly is arranged in two sets, namely a first battery assembly installed in the middle of the left longitudinal beam and a second battery assembly installed in the middle of the right longitudinal beam. The first battery assembly includes a first bracket and multiple first batteries. The first bracket includes a first middle partition, and the first middle partition divides the first bracket into an upper shelf for placing the first batteries and a lower shelf for placing the remaining first batteries; the second battery assembly includes a second bracket and multiple second batteries. The second bracket includes a second middle partition, and the second middle partition divides the second bracket into an upper shelf for placing the second batteries and a lower shelf for placing the remaining second batteries.

5. The chassis arrangement structure of the double-drive double-steering electric transport vehicle without a cab according to claim 4 is characterized in that: The air tank assembly is arranged on the left longitudinal beam and is located between the second battery assembly and the left rear wheel; the air compressor is arranged between the first cross beam and the second cross beam; a battery frame is installed on the right longitudinal beam, and the battery frame is located between the front right wheel and the second battery assembly.

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