A combined frame for a pure electric engineering vehicle

Abstract

The present invention discloses a combined frame for a pure electric engineering vehicle, which includes a trapezoidal frame structure at the front, a three-dimensional space box frame structure in the middle, and a plate girder frame structure at the rear. The trapezoidal frame structure and the three-dimensional space box frame structure are connected by a through-type transfer cross beam, and the three-dimensional space box frame structure and the plate girder frame structure are connected by a transverse through-type transfer frame. The transverse through-type transfer frame is installed on the three-dimensional space box frame structure and is opposite to the position of the through-type transfer cross beam. A fuel filling hole is provided on the side edge of the plate girder frame structure, and inner grooves for placing wheels are provided on both sides inside the plate girder frame structure. The present invention reduces the self-weight, improves the quality, enhances the structural stability of the frame, also improves the driving stability of the frame, saves energy, reduces emissions, reduces tire wear and extends the tire life, laying a solid foundation for the serialization and standardization of the whole vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of the design and manufacture of pure electric engineering vehicles, and particularly relates to a combined frame for a pure electric engineering vehicle. Background Art

[0002] Currently, with the growing call for energy conservation, emission reduction, and reduced energy dependence, coupled with the pressure brought by rising oil prices to the traditional automotive industry, pure electric engineering vehicles will gradually become the development trend of the future automotive industry.

[0003] However, the power batteries equipped on electric engineering vehicles, whether in terms of size parameters, mass parameters, and fixed connection methods, etc., are very different from the fuel supply systems to be replaced. It is almost impossible to continue using the layout positions, layout and fixing forms of the original fuel supply systems, and even the corresponding fixed bases (i.e., the frame). Therefore, in order to reasonably, efficiently, and safely utilize batteries from different battery manufacturers, with different specifications and different types, it is necessary to additionally manufacture an installation and fixing device with strong adaptability, reliable fixation, and capable of realizing rapid replacement. Even in the frame design, it is necessary to incorporate the size parameters, mass parameters, and wiring (cable) space requirement parameters of the battery.

[0004] When using the traditional chassis frame design method for engineering vehicles to solve the above problems, the results will inevitably be poor torsional stiffness, poor battery variety compatibility, poor basis for vehicle model serialization, and high manufacturing process difficulty and cost. Therefore, it is necessary to design a chassis frame for electric engineering vehicles to meet the requirements. Summary of the Invention

[0005] The purpose of the present invention is to provide a combined frame for a pure electric engineering vehicle to solve the above problems.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A combined frame for a pure electric engineering vehicle of the present invention includes a trapezoidal frame structure at the front, a three-dimensional space box frame structure in the middle, and a plate beam frame structure at the rear. The trapezoidal frame structure and the three-dimensional space box frame structure are connected by a through-type transfer cross beam, and the through-type transfer cross beam is installed on the three-dimensional space box frame structure. The three-dimensional space box frame structure and the plate beam frame structure are connected by a transverse through-type transfer frame, and the transverse through-type transfer frame is installed on the three-dimensional space box frame structure and is opposite to the position of the through-type transfer cross beam. A fuel filling hole is provided on the side of the plate beam frame structure, and inner grooves for placing wheels are provided on both sides inside the plate beam frame structure.

[0008] Furthermore, the trapezoidal frame structure includes two longitudinal beams, a front cross beam and a rear cross beam, one end of the two longitudinal beams is respectively vertically connected to the front cross beam, and the other end is connected to the through-type transfer cross beam, and the rear cross beam is connected between the two longitudinal beams.

[0009] Furthermore, an oblique connecting plate is provided between the longitudinal beam and the rear cross beam.

[0010] Furthermore, the three-dimensional space box-type frame structure includes a front frame structure, a top plate beam frame structure, a bottom frame structure, an upper central longitudinal beam and a rear plate beam frame structure. The top plate beam frame structure is installed above the through-type transition beam and the transverse through-type transition frame, the is installed below the through-type transition beam, the rear plate beam frame structure is installed below the transverse through-type transition frame, and the bottom frame structure is fixed between the bottom ends of the front frame structure and the rear plate beam frame structure.

[0011] Furthermore, the front frame structure includes two end columns and a middle support column, the two end columns are installed below the two ends of the through-type transition beam, and the middle support column is fixed below the middle part of the through-type transition beam.

[0012] Furthermore, the two end columns are provided with first guide rollers.

[0013] Furthermore, the rear plate-beam frame structure includes two outer lower combined columns, two transition beams and a middle main body plate, the middle main body plate is vertically fixed below the middle section of the transverse through-connection frame, the outer lower combined columns and the transition beams are symmetrically arranged on both sides of the middle main body plate, and the transition beam is transversely arranged between the outer lower combined columns and the middle main body plate.

[0014] Furthermore, the plate beam frame structure includes two main longitudinal plate beams, and the two main longitudinal plate beams are connected by a main longitudinal plate beam front connecting plate and a main longitudinal plate beam rear upper connecting plate. A tire cover is provided on the outer side of the main longitudinal plate beam, and the inner groove is opened inside the tire cover. An outer plate beam is provided on the outer side of the tire cover, and a tail plate-type cross beam is connected to the rear end of the main longitudinal plate beam.

[0015] Furthermore, the transverse through-connection frame includes connecting columns between outer beams, a top through-cross beam, connecting columns between middle beams and a through-cross beam. The connecting columns between outer beams and the connecting columns between middle beams are both arranged between the top through-cross beam and the through-cross beam, the connecting columns between middle beams are placed in the middle position, and the connecting columns between outer beams are arranged at both ends.

[0016] Furthermore, a second guide roller is provided on the through beam.

[0017] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0018] The present invention reduces the self-weight, improves the quality, enhances the structural stability of the vehicle frame, also improves the driving stability of the vehicle frame, saves energy, reduces emissions, reduces tire wear and extends the tire life, laying a solid foundation for the serialization and standardization of the whole vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the drawings.

[0020] Figure 1 It is a schematic structural diagram of the combined vehicle frame of the pure electric engineering vehicle of the present invention;

[0021] Figure 2 It is a schematic structural diagram of a trapezoidal frame;

[0022] Figure 3 It is a schematic structural diagram of a three-dimensional space box frame;

[0023] Figure 4 It is a schematic structural diagram of the front frame;

[0024] Figure 5 It is a schematic structural diagram of the top plate beam frame;

[0025] Figure 6 It is a schematic structural diagram of the bottom frame;

[0026] Figure 7 It is a schematic structural diagram of the rear plate beam frame;

[0027] Figure 8 It is a schematic structural diagram of the plate beam frame;

[0028] Figure 9 It is a schematic structural diagram of the transverse through-transition frame;

[0029] Figure 10 It is a schematic diagram of the whole pure electric engineering vehicle;

[0030] Description of reference numerals: 1. Trapezoidal frame structure; 11. Longitudinal beam; 12. Front cross beam; 13. Rear cross beam; 14. Diagonal connecting plate; 2. Penetrating transfer cross beam; 3. Three-dimensional space box frame structure; 31. Front frame structure; 311. Columns at both ends; 312. Middle support column; 313. First guiding roller; 32. Top plate beam frame structure; 321. Outer fixed L-shaped plate; 322. Main L-shaped plate under the seat; 323. Middle trough-shaped left and right connecting beams; 324. Outer vertical edge plate; 325. Tail head plate; 33. Bottom frame structure; 331. Penetrating beam with antifriction rollers; 332. Outer beam with slot structure; 333. Bottom central spine longitudinal beam; 334. Middle guiding angle-shaped penetrating cross beam; 335. Bottom common connecting plate; 34. Upper central longitudinal beam; 35. Rear plate beam frame structure; 351. Outer lower combined column; 352. Transition cross beam; 353. Middle main plate; 4. Plate beam frame structure; 41. Outer plate beam; 42. Tire cover; 43. Main longitudinal plate beam; 44. Front connecting plate of main longitudinal plate beam; 45. Rear upper connecting plate of main longitudinal plate beam; 46. Tail plate-shaped cross beam; 5. Transverse penetrating transfer frame; 51. Connecting column between outer beams; 52. Top penetrating cross beam; 53. Connecting column between middle beams; 54. Penetrating cross beam; 55. Second guiding roller; 6. Fuel filling hole; 7. Inner groove. Detailed implementation mode

[0031] As Figures 1-10 Shown in the figure, a combined frame of a pure electric engineering vehicle includes a trapezoidal frame structure 1 at the front, a three-dimensional space box frame structure 3 in the middle, and a plate beam frame structure 4 at the rear. The trapezoidal frame structure 1 and the three-dimensional space box frame structure 3 are connected by a penetrating transfer cross beam 2. The penetrating transfer cross beam 2 is installed on the three-dimensional space box frame structure 3. The three-dimensional space box frame structure 3 and the plate beam frame structure 4 are connected by a transverse penetrating transfer frame 5. The transverse penetrating transfer frame 5 is installed on the three-dimensional space box frame structure 3 and is opposite to the position of the penetrating transfer cross beam 2.

[0032] The connection between the trapezoidal frame structure 1, the penetrating transfer cross beam 2, the three-dimensional space box frame structure 3, the plate beam frame structure 4, and the transverse penetrating transfer frame 5 can be one of welding, riveting, and screwing.

[0033] A fuel filling hole 6 is opened on the side of the plate beam frame structure 4, and inner grooves 7 for placing wheels are opened on both sides inside the plate beam frame structure 4.

[0034] As Figure 2As shown in the figure, the trapezoidal frame structure 1 includes two longitudinal beams 11, a front cross beam 12 and a rear cross beam 13. One end of each of the two longitudinal beams 11 is vertically connected to the front cross beam 12 respectively, and the other end is connected to the through-type transfer cross beam 2, and the rear cross beam 13 is connected between the two longitudinal beams 11.

[0035] An inclined connecting plate 14 is provided between the longitudinal beam 11 and the rear cross beam 13.

[0036] As Figure 3 shown in the figure, the three-dimensional space box-type frame structure 3 includes a front frame structure 31, a top plate beam frame structure 32, a bottom frame structure 33, an upper central longitudinal beam 34 and a rear plate beam frame structure 35. The top plate beam frame structure 32 is installed above the through-type transfer cross beam 2 and the transverse through-type transfer frame 5, the is installed below the through-type transfer cross beam 2, the rear plate beam frame structure 35 is installed below the transverse through-type transfer frame 5, and the bottom frame structure 33 is fixed between the bottom ends of the front frame structure 31 and the rear plate beam frame structure 35.

[0037] As Figure 4 shown in the figure, the front frame structure 31 includes two end columns 311 and a middle support column 312. The two end columns 311 are installed below the two ends of the through-type transfer cross beam 2, and the middle support column 312 is fixed below the middle of the through-type transfer cross beam 2. First guiding rollers 313 are provided on the two end columns 311.

[0038] As Figure 5 shown in the figure, the top plate beam frame structure 32 includes an outer fixed L-shaped plate 321, a main L-shaped plate under the seat 322, a middle trough-shaped left and right connecting beam 323, an outer vertical edge plate 324 and a tail end closing plate 325.

[0039] As Figure 6 shown in the figure, the bottom frame structure 33 includes a wear-reducing roller through beam 331, an outer beam with a slot structure 332, a bottom central spine longitudinal beam 333, a middle guiding angle-shaped through cross beam 334 and a bottom common connecting plate 335. The middle support column 312 is installed on the bottom central spine longitudinal beam 333, and the two end columns 311 and the outer lower combined column 351 are respectively installed on both sides of the wear-reducing roller through beam 331.

[0040] As Figure 7As shown, the rear plate beam frame structure 35 includes two outer lower combined columns 351, two transition cross beams 352, and a middle main plate 353. The middle main plate 353 is vertically fixed below the middle section of the transverse through connection frame 5. The outer lower combined columns 351 and the transition cross beams 352 are symmetrically arranged on both sides of the middle main plate 353. The transition cross beams 352 are horizontally arranged between the outer lower combined columns 351 and the middle main plate 353.

[0041] As Figure 8 shown, the plate beam frame structure 4 includes two main longitudinal plate beams 43. The two main longitudinal plate beams 43 are connected by a main longitudinal plate beam front connection plate 44 and a main longitudinal plate beam rear upper connection plate 45. A tire cover 42 is provided outside the main longitudinal plate beams 43. The inner groove 7 is opened inside the tire cover 42. An outer plate beam 41 is provided outside the tire cover 42. The rear end of the main longitudinal plate beam 43 is connected to a tail plate-shaped cross beam 46.

[0042] As Figure 9 shown, the transverse through connection frame 5 includes outer beam connection columns 51, a top through cross beam 52, middle beam connection columns 53, and a through cross beam 54. The outer beam connection columns 51 and the middle beam connection columns 53 are both arranged between the top through cross beam 52 and the through cross beam 54. The middle beam connection columns 53 are placed in the middle position, and the outer beam connection columns 51 are arranged at both ends. A second guide roller 55 is provided on the through cross beam 54.

[0043] Due to the existence of the through-type transfer beams 2 and the transverse through-type transfer frames 5 embedded on the three-dimensional space box frame structure 3, the transverse torques formed by the left-right unbalanced forces transmitted from the front axle to the trapezoidal frame structure 1 and from the rear axle to the plate girder frame structure 4 are all forced and evenly transmitted to the three-dimensional space box frame structure 3; and the transverse and longitudinal cross-sections of the three-dimensional space box frame structure 3 are both square or rectangular, which is exactly one of the best structural forms for torsion resistance and can effectively resist and digest the transverse torsional moments transmitted from various parts of the entire vehicle frame. In this way, according to the force characteristics, single elements with different cross-sections and different characteristics are organically combined together to form a frame structure with different mechanical characteristics. According to the load characteristics that different parts of the whole vehicle need to bear or transmit, frame structures with corresponding mechanical characteristics are arranged, and these frame structures with different mechanical characteristics are organically combined together to jointly transmit or bear external loads, thus forming the combined vehicle frame of the present invention. One of the mechanical characteristics of the frame structure is large stiffness and small mass. All the elements constituting the frame structure participate in bearing, and the mass utilization coefficient is high. The present invention realizes the targeted utilization and organic combination of each frame structure in the structural design, and the combined vehicle frame composed of different types of frame structures organically replaces the traditional trapezoidal vehicle frame, thus avoiding the disadvantages of low stiffness, large self-weight and low mass utilization coefficient of the traditional trapezoidal vehicle frame; due to the existence of the frame structure, each part and each element constituting the chassis vehicle frame form an organic whole, which can bear greater and more external loads; the inherent capabilities of each component and element are fully exerted (making the best use of everything), realizing overall bearing. Under the same conditions (the bearing capacity remains unchanged), the material utilization rate is improved, the self-weight of each element is reduced, the mass utilization coefficient is improved, and naturally the purpose of reducing the self-weight is achieved.

[0044] Since each part of the chassis vehicle frame is composed of frame structures with different mechanical characteristics, and the frame structure can force each element constituting the frame structure to share more external loads with each other, greatly improving the bearing capacity of the bearing elements and the ability to resist deformation, and correspondingly, the stability of the chassis vehicle frame is also greatly improved. Secondly, one of the main characteristics of the frame-type vehicle frame is that its structural stability during force application is far superior to that of the traditional trapezoidal vehicle frame. The through-type transfer beams 2 and the transverse through-type transfer frames 5 are used to organically connect the front trapezoidal frame structure 1, the rear plate girder frame structure 4 and the middle three-dimensional space box frame 3 together, making the vehicle frame combination of the three frame structures in the front, middle and rear into a complete and firm bearing whole, achieving overall bearing in terms of bearing, and improving the structural stability of the overall chassis vehicle frame.

[0045] Since the overall bearing of the chassis vehicle frame is realized, all external loads will be shared by all elements, making the entire vehicle frame become a complete bearing whole. Therefore, when dealing with various working conditions, the deformation amplitude of the vehicle frame is greatly reduced, thereby improving the driving stability.

[0046] Due to the reduction of its own weight, the consumption of raw materials is saved. At the same time, the reduction of its own weight also reduces the power consumption of the vehicle during use.

[0047] Due to the realization of integral load-bearing, the structural stability of the chassis frame and the driving stability of the whole vehicle are improved, the stress condition of the tires during driving is improved, the wear of the tires is naturally reduced, and the service life of the tires is extended.

[0048] Since different frame structures correspond to the front, middle and rear of the combined chassis frame respectively, each frame is a relatively independent complete structure and also an integral part that depends on and connects with each other and jointly bears the load in the overall combined chassis frame. Each frame structure can be serially and standardly designed and modified according to the size parameters and mass parameters of the components to be fixedly connected or borne without damaging their mutual connection.

[0049] The embodiments described above are only used to describe the preferred mode of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solution of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A combined frame for a pure electric engineering vehicle, characterized in that: it includes a trapezoidal frame structure (1) at the front, a three-dimensional space box frame structure (3) in the middle, and a plate beam frame structure (4) at the rear. The trapezoidal frame structure (1) and the three-dimensional space box frame structure (3) are connected by a through-type transfer cross beam (2). The through-type transfer cross beam (2) is installed on the three-dimensional space box frame structure (3). The trapezoidal frame structure (1) includes two longitudinal beams (11), a front cross beam (12), and a rear cross beam (13). One end of each of the two longitudinal beams (11) is vertically connected to the front cross beam (12), and the other end is connected to the through-type transfer cross beam (2). And the rear cross beam (13) is connected between the two longitudinal beams (11). The three-dimensional space box frame structure (3) and the plate beam frame structure (4) are connected by a transverse through-type transfer frame (5). The transverse through-type transfer frame (5) is installed on the three-dimensional space box frame structure (3) and is opposite to the position of the through-type transfer cross beam (2). The three-dimensional space box frame structure (3) includes a front frame structure (31), a top plate beam frame structure (32), a bottom frame structure (33), an upper central longitudinal beam (34), and a rear plate beam frame structure (35). The top plate beam frame structure (32) is installed above the through-type transfer cross beam (2) and the transverse through-type transfer frame (5). The front frame structure (31) is installed below the through-type transfer cross beam (2). The rear plate beam frame structure (35) is installed below the transverse through-type transfer frame (5). The bottom frame structure (33) is fixed between the bottom ends of the front frame structure (31) and the rear plate beam frame structure (35). The front frame structure (31) includes two end columns (311) and a middle support column (312). The two end columns (311) are installed below the two ends of the through-type transfer cross beam (2). The middle support column (312) is fixed below the middle of the through-type transfer cross beam (2). An oil filling hole (6) is opened on the side edge of the plate beam frame structure (4). Inner grooves (7) for placing wheels are opened on both sides inside the plate beam frame structure (4). The plate beam frame structure (4) includes two main longitudinal plate beams (43). The two main longitudinal plate beams (43) are connected by a main longitudinal plate beam front connecting plate (44) and a main longitudinal plate beam rear upper connecting plate (45). A tire cover (42) is provided on the outside of the main longitudinal plate beam (43). The inner groove (7) is opened inside the tire cover (42). An outer plate beam (41) is provided on the outside of the tire cover (42). The rear end of the main longitudinal plate beam (43) is connected to a tail plate-shaped cross beam (46).

2. The combined frame for a pure electric engineering vehicle according to claim 1, characterized in that: an inclined connecting plate (14) is provided between the longitudinal beam (11) and the rear cross beam (13).

3. The combined frame for a pure electric engineering vehicle according to claim 1, It is characterized in that: The first guide rollers (313) are provided on the two end columns (311).

4. The combined frame of the pure electric engineering vehicle according to claim 1, It is characterized in that: The rear plate beam frame structure (35) includes two outer lower combined columns (351), two transition cross beams (352) and a middle main body plate (353). The middle main body plate (353) is vertically fixed below the middle section of the transverse through-transition frame (5). The outer lower combined columns (351) and the transition cross beams (352) are symmetrically arranged on both sides of the middle main body plate (353). The transition cross beams (352) are horizontally arranged between the outer lower combined columns (351) and the middle main body plate (353).

5. The combined frame of the pure electric engineering vehicle according to claim 1, It is characterized in that: The transverse through-transition frame (5) includes outer beam-interconnecting columns (51), a top through-cross beam (52), middle beam-interconnecting columns (53) and a through-cross beam (54). The outer beam-interconnecting columns (51) and the middle beam-interconnecting columns (53) are both arranged between the top through-cross beam (52) and the through-cross beam (54). The middle beam-interconnecting columns (53) are placed in the middle position, and the outer beam-interconnecting columns (51) are arranged at both ends.

6. The combined frame of the pure electric engineering vehicle according to claim 5, It is characterized in that: The second guide rollers (55) are provided on the through-cross beam (54).

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