An assembled skateboard chassis frame structure

Abstract

The utility model relates to the technical field of automobile frame, especially a kind of assembled skateboard chassis frame structure, including two interval arrangement's longitudinal beam, the both ends of first front crossbeam are bolted connection with two longitudinal beams respectively through first front mounting seat, the both ends of second front crossbeam are bolted connection with two longitudinal beams respectively through second front mounting seat, the both ends of third front crossbeam are bolted connection with two longitudinal beams respectively through third front mounting seat;The both ends of first rear crossbeam are bolted connection with two longitudinal beams respectively through first rear mounting seat, the both ends of second rear crossbeam are bolted connection with two longitudinal beams respectively through second rear mounting seat, the both ends of third rear crossbeam are bolted connection with two longitudinal beams respectively through third rear mounting seat.The utility model has the beneficial effects of: bolt fixed connection is adopted, it is convenient to assemble, reduces the requirement to the technical level of assembly worker, so that the assembly process of vehicle body and frame is more convenient, improves assembly efficiency, is favorable to large-scale production and popularization and application.

Description

Technical Field

[0001] This utility model relates to the field of automobile frame technology, and in particular to an assembled skateboard chassis frame structure. Background Technology

[0002] With the continuous development of the automotive industry, consumers' demands for vehicle performance, safety, comfort, and personalization are increasing. The chassis frame is a crucial component of a vehicle, not only bearing the weight of all chassis assemblies, the body, and cargo, but also withstanding various impacts transmitted from the engine, vehicle load, and the ground during driving, significantly affecting the vehicle's handling stability and safety. Traditional automotive chassis frames typically employ an integrated design and manufacturing process, resulting in complex production processes, high costs, and difficult maintenance. Furthermore, existing chassis frames often use welding for the crossbeams and longitudinal beams, making installation and disassembly inconvenient and requiring highly skilled workers. This also limits their flexibility in adapting to different vehicle models and functional requirements. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an assembled skateboard chassis frame structure to overcome the above-mentioned deficiencies in the prior art.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: an assembled skateboard chassis frame structure includes two spaced longitudinal beams, a front anti-collision beam is fixed between the front ends of the two longitudinal beams by bolts, and a plurality of crossbeam assemblies are spaced between the front parts of the two longitudinal beams from front to back, and the two ends of the plurality of crossbeam assemblies are respectively bolted to the longitudinal beams by mounting base assemblies.

[0005] The beneficial effects of this utility model are: the entire frame is fixed by bolts, which facilitates assembly. The assembly by bolts reduces the technical requirements of the assembly workers, making the assembly process of the vehicle body and frame simpler, improving assembly efficiency, reducing assembly time, and lowering production costs, which is conducive to large-scale production and widespread application.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the crossbeam assembly includes a first front crossbeam, and the mounting base assembly includes a first front mounting base. The first front mounting base includes a first front mounting part one, a first front connecting part, and a first front mounting part two, which are integrally and fixedly connected. The top of the first front mounting part one is integrally and fixedly provided with two spaced-apart first front connecting ears one. The two first front connecting ears one are respectively provided on the inner and outer sides of the longitudinal beam. The two first front connecting ears one are fixedly connected to the longitudinal beam by a plurality of bolts that pass through the first front connecting ears one and the longitudinal beam in sequence. The first front connecting part is provided on the side of the first front mounting part one facing the inner side of the two longitudinal beams. The end of the first front connecting part away from the first front mounting part one is provided with the first front mounting part two. The bottom of the first front mounting part two is integrally and fixedly provided with two first front connecting ears two along the front-rear direction of the longitudinal beam. The end of the first front crossbeam is provided between the two first front connecting ears two. The two first front connecting ears two are fixedly connected to the first front crossbeam by a plurality of bolts that pass through the first front connecting ears two and the first front crossbeam in sequence.

[0008] The beneficial effects of adopting the above-mentioned further solution are as follows: the first front mounting part clamps the longitudinal beam through two first front connecting ears, and then fixes it to the longitudinal beam with bolts to ensure the stability of the connection with the longitudinal beam; the first front mounting part extends to the inner side of the two longitudinal beams through the first front connecting part, and is fixed to the first front crossbeam through the first front mounting part two; the first front mounting part two clamps the first front crossbeam through two first front connecting ears, and then fixes it to the first front crossbeam with bolts, resulting in high connection strength, stable connection, and convenient assembly, disassembly and maintenance.

[0009] Furthermore, the crossbeam assembly includes a second front crossbeam, and the mounting base assembly includes a second front mounting base. The second front mounting base includes an integrally fixed second front mounting part one, a second front connecting part, and a second front mounting part two. The top of the second front mounting part one is integrally fixedly provided with two spaced second front connecting ears one. The two second front connecting ears one are respectively provided on the inner and outer sides of the longitudinal beam. The two second front connecting ears one are fixedly connected to the longitudinal beam by a plurality of bolts that pass through the second front connecting ears one and the longitudinal beam in sequence. The second front connecting part is provided on the side of the second front mounting part one facing the inner side of the two longitudinal beams. The end of the second front connecting part away from the second front mounting part one is provided with the second front mounting part two. The bottom of the second front mounting part two is integrally fixedly provided with two second front connecting ears two at intervals along the front-rear direction of the longitudinal beam. The end of the second front crossbeam is provided between the two second front connecting ears two. The second front connecting ears two are fixedly connected to the second front crossbeam by a plurality of bolts that pass through the second front connecting ears two and the second front crossbeam in sequence.

[0010] The beneficial effects of adopting the above-mentioned further solution are as follows: the second front mounting part one clamps the pair of longitudinal beams through two second front connecting ears, and then fixes them with bolts to ensure the stability and firmness of the connection between the second front mounting part and the longitudinal beam; the second front mounting part one extends to the inside of the two longitudinal beams through the second front connecting part, and is fixed to the second front crossbeam through the second front mounting part two; the second front mounting part two clamps the second front crossbeam through two second front connecting ears, and then fixes it to the second front crossbeam with bolts, resulting in high connection strength, stable connection, and convenient assembly, disassembly and maintenance.

[0011] Furthermore, the crossbeam assembly includes a third front crossbeam, and the mounting base assembly includes a third front mounting base. A vertically arranged third front connecting lug 1 is integrally fixed to the top of the third front mounting base, abutting against the inner side of the longitudinal beam and being fixedly connected to the longitudinal beam by bolts. A horizontally arranged third front connecting lug 2 is integrally fixed to the outer side of the third front mounting base, abutting against the bottom of the longitudinal beam and being fixedly connected to the bottom of the longitudinal beam by bolts. Two third front connecting lugs 3 are integrally spaced at intervals along the front-rear direction of the longitudinal beam at the bottom of the third front mounting base. The end of the third front crossbeam is located between the two third front connecting lugs 3, and the two third front connecting lugs 3 are fixedly connected to the third front crossbeam by multiple bolts that sequentially pass through the third front connecting lugs 3 and the third front crossbeam.

[0012] The beneficial effects of adopting the above-mentioned further solution are as follows: the third front mounting bracket is fixedly connected to the inner side and bottom of the longitudinal beam through the third front connecting ear one and the third front connecting ear two, and the multi-directional connection enhances the connection strength between the third front mounting bracket and the longitudinal beam; then the third front crossbeam is clamped by the two third front connecting ears three, and then fixedly connected to the third front crossbeam by bolts, ensuring the stability of the connection between the longitudinal beam and the third front crossbeam, and facilitating assembly, disassembly and maintenance.

[0013] Furthermore, the crossbeam assembly includes a first rear crossbeam, and the mounting base assembly includes a first rear mounting base. The first rear mounting base includes an upper support plate for abutting against the top of the longitudinal beam. The support plate has two first rear connecting ears integrally fixed on its two sides. The two first rear connecting ears are respectively located on the inner and outer sides of the longitudinal beam. The two first rear connecting ears are fixedly connected to the longitudinal beam by bolts that pass through the first rear connecting ears and the longitudinal beam in sequence. The inner side of the first rear connecting ear located on the inner side of the longitudinal beam has two first rear connecting ears integrally fixed on its inner side. The two first rear connecting ears are spaced apart along the front-rear direction of the longitudinal beam. The end of the first rear crossbeam is located between the two first rear connecting ears. The two first rear connecting ears are fixedly connected to the first rear crossbeam by multiple bolts that pass through the first rear connecting ears and the first rear crossbeam in sequence.

[0014] The beneficial effects of adopting the above-mentioned further solution are: the first rear mounting seat is placed on the top of the longitudinal beam through a support plate, and then fixedly connected to the longitudinal beam through two first rear connecting ears one, and fixedly connected to the first rear cross beam through two first rear connecting ears two, thereby improving the supporting force of the entire first rear mounting seat and the first rear cross beam.

[0015] Furthermore, a first lower connecting plate is integrally fixed between the bottoms of the two first rear connecting ears 2, and the first lower connecting plate is integrally fixedly connected to the first rear connecting ear 1, and the first lower connecting plate abuts against the bottom of the first rear crossbeam.

[0016] The beneficial effects of adopting the above-mentioned further solution are: the setting of the first lower connecting plate can improve the strength of the two first rear connecting ears on the one hand, and support the first rear crossbeam on the other hand, share the pressure of the bolts connecting the first rear connecting ears and the first rear crossbeam, and ensure the connection strength of the first rear mounting seat.

[0017] Furthermore, the crossbeam assembly includes a second rear crossbeam, and the mounting base assembly includes a second rear mounting base. The second rear mounting base includes two spaced-apart second rear connecting ears 1. The bottom ends of the two second rear connecting ears 1 are integrally fixedly connected by a second lower connecting plate. The two second rear connecting ears 1 are respectively located on the inner and outer sides of the longitudinal beam. The two second rear connecting ears 1 are fixedly connected to the longitudinal beam by a plurality of bolts that pass through the second rear connecting ears 1 and the longitudinal beam in sequence. The inner side of the second rear connecting ears 1 located on the inner side of the longitudinal beam is integrally fixedly provided with two spaced-apart second rear connecting ears 2. The two second rear connecting ears 2 are spaced apart along the front-rear direction of the longitudinal beam. The end of the second rear crossbeam is located between the two second rear connecting ears 2. The two second rear connecting ears 2 are fixedly connected to the second rear crossbeam by a plurality of bolts that pass through the second rear connecting ears 2 and the second rear crossbeam in sequence.

[0018] The beneficial effects of adopting the above-mentioned further solution are: the second rear mounting base is clamped by two second rear connecting ears to a pair of longitudinal beams, and then fixedly connected to the longitudinal beams by bolts, resulting in high connection strength and convenient installation; the two second rear connecting ears clamp the second rear crossbeams, facilitating the positioning and installation with the second rear crossbeams, and then fixedly connected to the second rear crossbeams by bolts, ensuring the connection strength between the second rear mounting base and the second rear crossbeams.

[0019] Furthermore, a third lower connecting plate is integrally fixed between the bottoms of the two second rear connecting ears, the third lower connecting plate being integrally fixedly connected to the second rear connecting ear, and the third lower connecting plate abutting against the bottom of the second rear crossbeam.

[0020] The beneficial effect of adopting the above-mentioned further solution is that the setting of the third lower connecting plate ensures the strength of the two second rear connecting ears, and at the same time can share the support of the second rear crossbeam with the bolts on the second rear connecting ears.

[0021] Furthermore, the crossbeam assembly includes a third rear crossbeam, the mounting base assembly includes a third rear mounting base, the third rear mounting base includes a vertical connecting plate, the vertical connecting plate abuts against the inner side of the longitudinal beam, and the vertical connecting plate is fixedly connected to the longitudinal beam by bolts; a lower support plate is integrally fixedly provided at the bottom of the vertical connecting plate, and the lower support plate is fixedly connected to the bottom of the longitudinal beam by bolts; two spaced third connecting ears are integrally fixedly provided on the inner side of the vertical connecting plate, the end of the third rear crossbeam is located between the two third connecting ears, and the two third connecting ears are fixedly connected to the third rear crossbeam by a plurality of bolts that pass through the third connecting ears and the third rear crossbeam in sequence.

[0022] The advantages of adopting the above-mentioned further solution are: the third rear mounting base is fixedly connected to the side and bottom of the longitudinal beam through the vertical connecting plate and the lower support plate to ensure the connection strength; the third rear crossbeam is clamped and positioned by the two third connecting ears, and then fixedly connected by bolts, which makes installation convenient and the connection stable.

[0023] Furthermore, a fourth lower connecting plate is integrally fixed between the bottoms of the two third connecting ears, and the fourth lower connecting plate is integrally fixedly connected to the vertical connecting plate, with the fourth lower connecting plate abutting against the bottom of the third rear crossbeam.

[0024] The beneficial effects of adopting the above-mentioned further solution are: the setting of the fourth lower connecting plate ensures the strength of the two third connecting ears on the one hand, and on the other hand, it can support the third rear crossbeam simultaneously with the bolts on the third connecting ears. Attached Figure Description

[0025] Figure 1This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the first front mounting base in this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the second front mounting base in this utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the third front mounting base in this utility model;

[0029] Figure 5 This is a schematic diagram of the structure of the first rear mounting base in this utility model;

[0030] Figure 6 This is a schematic diagram of the structure of the second rear mounting base in this utility model;

[0031] Figure 7 This is a schematic diagram of one embodiment of the second rear mounting base in this utility model;

[0032] Figure 8 This is a schematic diagram of the structure of the third rear mounting base in this utility model;

[0033] The attached diagram lists the components represented by each number as follows:

[0034] 1. Longitudinal beam; 2. Front bumper beam; 3. First front crossbeam; 4. Second front crossbeam; 5. Third front crossbeam; 6. First front mounting bracket; 601. First front mounting part one; 602. First front connecting part; 603. First front mounting part two; 604. First front connecting ear one; 605. First front connecting ear two; 7. Second front mounting bracket; 701. Second front mounting part one; 702. Second front connecting part; 703. Second front mounting part two; 704. Second front connecting ear one; 705. Second front connecting ear two; 8. Third front mounting bracket; 801. Third front connecting ear one; 802. Third front connecting ear two; 803. Third front... 9. First rear crossbeam; 10. Second rear crossbeam; 11. Third rear crossbeam; 12. First rear mounting seat; 1201. Upper support plate; 1202. First rear connecting ear one; 1203. First rear connecting ear two; 1204. First lower connecting plate; 13. Second rear mounting seat; 1301. Second rear connecting ear one; 1302. Second lower connecting plate; 1303. Second rear connecting ear two; 1304. Third lower connecting plate; 14. Third rear mounting seat; 1401. Vertical connecting plate; 1402. Lower support plate; 1403. Third connecting ear; 1404. Fourth lower connecting plate; 15. Rear suspension spring disc. Detailed Implementation

[0035] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0036] like Figure 1 As shown, an embodiment of this utility model includes two spaced longitudinal beams 1, and a front anti-collision beam 2 is fixed between the front ends of the two longitudinal beams 1 by bolts. Specifically, a connecting flange is fixed to the front ends of the two longitudinal beams 1, and the connecting flange is fixedly connected to the front anti-collision beam 2 by bolts.

[0037] In one embodiment of this utility model, the two longitudinal beams 1 are integrally connected from front to back and are divided into a front section, a middle section and a rear section. The rear ends of the two front sections are bent outward in a direction away from each other and then connected to the middle section. The two middle sections are arranged in parallel. The rear ends of the two middle sections are bent upward and then connected to the rear section. The above structure can be applied to the installation structure of the vehicle body and at the same time improves the strength of the longitudinal beams 1.

[0038] Multiple crossbeam assemblies are arranged sequentially from front to back between the two longitudinal beams 1, and the two ends of the multiple crossbeam assemblies are respectively bolted to the longitudinal beams 1 through mounting base assemblies.

[0039] The crossbeam assembly includes a first front crossbeam 3, a second front crossbeam 4, a third front crossbeam 5, a first rear crossbeam 9, a second rear crossbeam 10, and a third rear crossbeam 11. The mounting bracket assembly includes a first front mounting bracket 6, a second front mounting bracket 7, a third front mounting bracket 8, a first rear mounting bracket 12, a second rear mounting bracket 13, and a third rear mounting bracket 14.

[0040] Between the front portions of the two longitudinal beams 1, a first front crossbeam 3, a second front crossbeam 4, and a third front crossbeam 5 are arranged sequentially from front to back. The two ends of the first front crossbeam 3 are bolted to the two longitudinal beams 1 via a first front mounting seat 6. The two ends of the second front crossbeam 4 are bolted to the two longitudinal beams 1 via a second front mounting seat 7. The two ends of the third front crossbeam 5 are bolted to the two longitudinal beams 1 via a third front mounting seat 8. Between the rear portions of the two longitudinal beams 1, a first rear crossbeam 9, a second rear crossbeam 10, and a third rear crossbeam 11 are arranged sequentially from front to back. The two ends of the first rear crossbeam 9 are bolted to the two longitudinal beams 1 via a first rear mounting seat 12. The two ends of the second rear crossbeam 10 are bolted to the two longitudinal beams 1 via a second rear mounting seat 13. The two ends of the third rear crossbeam 11 are bolted to the two longitudinal beams 1 via a third rear mounting seat 14.

[0041] In this embodiment of the utility model, the longitudinal beam 1 is supported by high-strength steel to ensure good rigidity and load-bearing capacity. The first front crossbeam 3, the second front crossbeam 4, the third front crossbeam 5, the first front mounting seat 6, the second front mounting seat 7, the third front mounting seat 8, the first rear crossbeam 9, the second rear crossbeam 10, the third rear crossbeam 11, the first rear mounting seat 12, the second rear mounting seat 13, and the third rear mounting seat 14 are made of aluminum alloy. While ensuring strength, the weight of the frame is greatly reduced, with a weight reduction of about 20% compared to the traditional steel welded frame.

[0042] like Figure 2 As shown, the first front mounting base 6 includes an integrated and fixedly connected first front mounting part 601, a first front connecting part 602, and a second first front mounting part 603. The top of the first front mounting part 601 is integrally and fixedly provided with two spaced-apart first front connecting ears 604. The two first front connecting ears 604 are respectively located on the inner and outer sides of the longitudinal beam 1 (in this application, the inner side refers to the side facing between the two longitudinal beams 1, and the outer side refers to the side away from between the two longitudinal beams 1). The two first front connecting ears 604 are fixedly connected to the longitudinal beam 1 by a plurality of bolts that sequentially pass through the first front connecting ears 604 and the longitudinal beam 1. After sequentially passing through the first front connecting ears 604 and the longitudinal beam 1, the bolts are threadedly connected to nuts, further improving the ease of installation. To improve installation efficiency; the first front connecting part 602 is located on the side of the first front mounting part 601 facing the inner side of the two longitudinal beams 1. The end of the first front connecting part 602 away from the first front mounting part 601 is provided with the first front mounting part 603. The bottom of the first front mounting part 603 is integrally fixed with two first front connecting ears 605 at intervals along the front-rear direction of the longitudinal beam 1. The end of the first front crossbeam 3 is located between the two first front connecting ears 605. The two first front connecting ears 605 are fixedly connected to the first front crossbeam 3 by a plurality of bolts that pass through the first front connecting ears 605 and the first front crossbeam 3 in sequence. The bolts pass through and extend out of the first front connecting ears 605 and the first front crossbeam 3 and are then threadedly connected to the nuts.

[0043] The first front mounting part 601 clamps the longitudinal beam 1 through two first front connecting ears 604, and then fixes it to the longitudinal beam 1 with bolts to ensure the stability of the connection with the longitudinal beam 1; the first front mounting part 601 extends to the inside of the two longitudinal beams 1 through the first front connecting part 602, and is fixed to the first front crossbeam 3 through the first front mounting part 603. The first front mounting part 603 clamps the first front crossbeam 3 through two first front connecting ears 605, and then fixes it to the first front crossbeam 3 with bolts. The connection has high strength and is stable, which facilitates assembly, disassembly and maintenance.

[0044] like Figure 3 As shown, the second front mounting base 7 includes an integrally fixedly connected second front mounting part 701, a second front connecting part 702, and a second front mounting part 703. The top of the second front mounting part 701 is integrally fixedly provided with two spaced second front connecting ears 704. The two second front connecting ears 704 are respectively provided on the inner and outer sides of the longitudinal beam 1. The two second front connecting ears 704 are fixedly connected to the longitudinal beam 1 by a plurality of bolts that pass through the second front connecting ears 704 and the longitudinal beam 1 in sequence. The bolts pass through and extend out of the second front connecting ears 704 and the longitudinal beam 1 and are then threadedly connected to the nuts.

[0045] The second front connecting part 702 is located on the side of the second front mounting part 1 701 facing the inner side of the two longitudinal beams 1. The end of the second front connecting part 702 away from the second front mounting part 1 701 is provided with a second front mounting part 2 703. The bottom of the second front mounting part 2 703 is integrally fixed with two second front connecting ears 2 705 at intervals along the front-rear direction of the longitudinal beam 1. The end of the second front crossbeam 4 is located between the two second front connecting ears 2 705. The second front connecting ears 2 705 are fixedly connected to the second front crossbeam 4 by a plurality of bolts that pass through the second front connecting ears 2 705 and the second front crossbeam 4 in sequence. The bolts pass through and extend out of the second front connecting ears 2 705 and the second front crossbeam 4 and are then threadedly connected to the nuts.

[0046] The second front mounting part 701 clamps the longitudinal beam 1 with two second front connecting ears 704 and then fixes it with bolts to ensure the stability and firmness of the connection between the second front mounting seat 7 and the longitudinal beam 1. The second front mounting part 701 extends to the inside of the two longitudinal beams 1 through the second front connecting part 702 and is fixed to the second front crossbeam 4 through the second front mounting part 703. The second front mounting part 703 clamps the second front crossbeam 4 with two second front connecting ears 705 and then fixes it to the second front crossbeam 4 with bolts. The connection has high strength and is stable, which facilitates assembly, disassembly and maintenance.

[0047] like Figure 4 As shown, the top of the third front mounting base 8 is integrally fixed with a vertically arranged third front connecting ear 801, the third front connecting ear 801 abuts against the inner side of the longitudinal beam 1, and the third front connecting ear 801 is fixedly connected to the longitudinal beam 1 by bolts.

[0048] The outer side of the third front mounting base 8 is integrally fixed with a horizontally arranged third front connecting ear 2 802. The third front connecting ear 2 802 abuts against the bottom of the longitudinal beam 1. The third front connecting ear 2 802 is fixedly connected to the bottom of the longitudinal beam 1 by bolts. In actual installation, the nut that is threadedly connected to the bolt can be welded and fixed to the longitudinal beam 1, and is coaxial with the through hole provided on the third front connecting ear 2 802. This makes it possible to only tighten the bolt during installation, without the need to use tools or hold the nut by hand, further improving the convenience and efficiency of installation. The bottom of the third front mounting base 8 is integrally provided with two third front connecting ears 3 803 at intervals along the front-back direction of the longitudinal beam 1. The end of the third front crossbeam 5 is located between the two third front connecting ears 3 803. The two third front connecting ears 3 803 are fixedly connected to the third front crossbeam 5 by multiple bolts that pass through the third front connecting ears 3 803 and the third front crossbeam 5 in sequence. The bolts pass through and extend from the third front connecting ears 3 803 and the third front crossbeam 5 and are threadedly connected to the nut.

[0049] The third front mounting bracket 8 is fixedly connected to the inner side and bottom of the longitudinal beam 1 through the third front connecting ear 1 801 and the third front connecting ear 2 802 respectively. The multi-directional connection enhances the connection strength between the third front mounting bracket and the longitudinal beam 1. Then, the third front crossbeam 5 is clamped by the two third front connecting ears 3 803, and then fixedly connected to the third front crossbeam 5 by bolts, ensuring the stability of the connection between the longitudinal beam 1 and the third front crossbeam 5, and facilitating assembly, disassembly and maintenance.

[0050] like Figure 5 As shown, the first rear mounting base 12 includes an upper support plate 1201 for abutting against the top of the longitudinal beam 1. The two sides of the support plate are respectively integrally fixed with first rear connecting ears 1202. The two first rear connecting ears 1202 are respectively provided on the inner and outer sides of the longitudinal beam 1. The two first rear connecting ears 1202 are fixedly connected to the longitudinal beam 1 by bolts that pass through the first rear connecting ears 1202 and the longitudinal beam 1 in sequence. The bolts pass through and extend out of the first rear connecting ears 1202 and the longitudinal beam 1 and are threadedly connected to nuts.

[0051] Two first rear connecting ears 1203 are integrally fixed on the inner side of the first rear connecting ear 1202 located inside the longitudinal beam 1. The two first rear connecting ears 1203 are spaced apart along the front-rear direction of the longitudinal beam 1. The end of the first rear crossbeam 9 is located between the two first rear connecting ears 1203. The two first rear connecting ears 1203 are fixedly connected to the first rear crossbeam 9 by a plurality of bolts that pass through the first rear connecting ears 1203 and the first rear crossbeam 9 in sequence. The bolts pass through and extend out of the first rear connecting ears 1203 and the first rear crossbeam 9 and are then threadedly connected to the nuts.

[0052] The first rear mounting seat 12 is placed on top of the longitudinal beam 1 via a support plate, and then fixedly connected to the longitudinal beam 1 via two first rear connecting ears 1202, and fixedly connected to the first rear cross beam 9 via two first rear connecting ears 1203, thereby improving the support force of the entire first rear mounting seat 12 and the first rear cross beam 9.

[0053] A first lower connecting plate 1204 is integrally fixed between the bottoms of the two first rear connecting ears 1203. The first lower connecting plate 1204 is integrally fixedly connected to the first rear connecting ear 1202 and abuts against the bottom of the first rear crossbeam 9. The first lower connecting plate 1204 can improve the strength of the two first rear connecting ears 1203 and support the first rear crossbeam 9, share the pressure of the bolts connecting the first rear connecting ears 1203 and the first rear crossbeam 9, and ensure the connection strength of the first rear mounting base 12.

[0054] like Figure 6 As shown, the second rear mounting base 13 includes two spaced-apart second rear connecting ears 1301. The bottom ends of the two second rear connecting ears 1301 are integrally fixedly connected by a second lower connecting plate 1302. The two second rear connecting ears 1301 are respectively located on the inner and outer sides of the longitudinal beam 1. The two second rear connecting ears 1301 are fixedly connected to the longitudinal beam 1 by a plurality of bolts that pass through the second rear connecting ears 1301 and the longitudinal beam 1 in sequence. The bolts pass through and extend out of the second rear connecting ears 1301 and the longitudinal beam 1 and are then threadedly connected to nuts.

[0055] Two second rear connecting ears 1303 are integrally fixed on the inner side of the second rear connecting ear 1301 located inside the longitudinal beam 1. The two second rear connecting ears 1303 are spaced apart along the front-rear direction of the longitudinal beam 1. The end of the second rear crossbeam 10 is located between the two second rear connecting ears 1303. The two second rear connecting ears 1303 are fixedly connected to the second rear crossbeam 10 by a plurality of bolts that pass through the second rear connecting ears 1303 and the second rear crossbeam 10 in sequence. The bolts pass through and extend out of the second rear connecting ears 1303 and the second rear crossbeam 10 and are then threadedly connected to the nuts.

[0056] The second rear mounting base 13 clamps the longitudinal beam 1 through two second rear connecting ears 1301, and then fixes it to the longitudinal beam 1 with bolts, resulting in a strong connection and easy installation. The two second rear connecting ears clamp the second rear crossbeam 10, facilitating its positioning and installation with the second rear crossbeam 10, and then fix it to the second rear crossbeam 10 with bolts, ensuring the connection strength between the second rear mounting base 13 and the second rear crossbeam 10.

[0057] A third lower connecting plate 1304 is integrally fixed between the bottoms of the two second rear connecting ears 1303. The third lower connecting plate 1304 is integrally fixedly connected to the second rear connecting ear 1301 and abuts against the bottom of the second rear crossbeam 10. The third lower connecting plate 1304 ensures the strength of the two second rear connecting ears 1303 and can share the support of the second rear crossbeam 10 with the bolts on the second rear connecting ears 1303.

[0058] like Figure 7 As shown, a connecting module can be provided at the bottom end of the third lower connecting plate 1304 to facilitate the support of the vehicle's bottom components. In this embodiment, a brake mounting point is provided below the third lower connecting plate 1304, which connects to the suspension system components via bolts to improve vehicle stability. In addition, the bottom of the longitudinal beam 1 and / or the bottom ends of the first front mounting seat 6 and / or the second front mounting seat 7 and / or the third front mounting seat 8 and / or the first rear mounting seat 12 and / or the second rear mounting seat 13 and / or the third rear mounting seat 14 can be integrally fixed with corresponding connecting modules to support the vehicle's bottom components.

[0059] like Figure 8As shown, the third rear mounting base 14 includes a vertical connecting plate 1401, which abuts against the inner side of the longitudinal beam 1. The vertical connecting plate 1401 is fixedly connected to the longitudinal beam 1 by bolts. In actual installation, the nut threadedly connected to the bolt can be welded and fixed to the longitudinal beam 1, and is coaxial with the through hole provided on the vertical connecting plate 1401. This allows the bolt to be tightened during installation, without the need for separate tools or hand-held fixing of the nut, further improving the convenience and efficiency of installation.

[0060] The bottom of the vertical connecting plate 1401 is integrally fixed with a lower support plate 1402, which is fixedly connected to the bottom of the longitudinal beam 1 by bolts. In actual installation, the nut threadedly connected to the bolt can be welded and fixed to the longitudinal beam 1 and coaxial with the through hole on the lower support plate 1402. This allows the bolt to be tightened during installation without the need for separate tools or hand-held fixing of the nut, further improving the convenience and efficiency of installation.

[0061] Two spaced third connecting ears 1403 are integrally fixed on the inner side of the vertical connecting plate 1401. The end of the third rear crossbeam 11 is located between the two third connecting ears 1403. The two third connecting ears 1403 are fixedly connected to the third rear crossbeam 11 by a plurality of bolts that pass through the third connecting ears 1403 and the third rear crossbeam 11 in sequence. The bolts pass through and extend out of the third connecting ears 1403 and the third rear crossbeam 11 and are then threadedly connected to the nuts.

[0062] The third rear mounting base 14 is fixedly connected to the side and bottom of the longitudinal beam 1 through the vertical connecting plate 1401 and the lower support plate 1402 to ensure the connection strength. The third rear crossbeam 11 is clamped and positioned by two third connecting ears 1403 and then fixedly connected by bolts. The installation is convenient and the connection is stable.

[0063] A fourth lower connecting plate 1404 is integrally fixed between the bottoms of the two third connecting ears 1403. The fourth lower connecting plate 1404 is integrally fixedly connected to the vertical connecting plate 1401, and abuts against the bottom of the third rear crossbeam 11. The fourth lower connecting plate 1404 ensures the strength of the two third connecting ears 1403 and, together with the bolts on the third connecting ears 1403, supports the third rear crossbeam 11.

[0064] In an embodiment of this utility model, a rear suspension spring disc 15 is detachably installed on the inner side of the rear of the two longitudinal beams 1 by bolts. The rear suspension spring disc 15 is integrally formed by high pressure casting process and is made of heat-free aluminum alloy. It is bolted to the longitudinal beam 1 on the side, reducing the overall weight by about 30%.

[0065] This utility model uses bolts to fix the entire frame, which facilitates assembly. The use of bolts reduces the skill requirements of assembly workers, making the assembly process of the vehicle body and frame simpler, improving assembly efficiency, reducing assembly time, and lowering production costs. This is beneficial for large-scale production and widespread application. Furthermore, the bolt connection facilitates later maintenance, disassembly, and replacement.

[0066] In the description of this utility model, it should be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "circumferential", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the system or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0067] In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0068] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0069] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0070] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A prefabricated skateboard chassis frame structure, characterized in that, It includes two spaced longitudinal beams (1), a front anti-collision beam (2) is fixed between the front ends of the two longitudinal beams (1) by bolts, and multiple crossbeam assemblies are spaced between the two longitudinal beams (1) from front to back, and the two ends of the multiple crossbeam assemblies are respectively bolted to the longitudinal beams (1) by mounting base assemblies.

2. The assembled skateboard chassis frame structure according to claim 1, characterized in that, The crossbeam assembly includes a first front crossbeam (3), and the mounting base assembly includes a first front mounting base (6). The first front mounting base (6) includes a first front mounting part one (601), a first front connecting part (602), and a first front mounting part two (603) that are integrally fixedly connected. The top of the first front mounting part one (601) is integrally fixedly provided with two spaced first front connecting ears one (604). The two first front connecting ears one (604) are respectively provided on the inner and outer sides of the longitudinal beam (1). The two first front connecting ears one (604) are fixedly connected to the longitudinal beam (1) by a plurality of bolts that pass through the first front connecting ears one (604) and the longitudinal beam (1) in sequence. The first front connecting part (602) On the side of the first front mounting part (601) facing the inner side of the two longitudinal beams (1), the first front connecting part (602) is provided with a first front mounting part (603) at the end away from the first front mounting part (601). The bottom of the first front mounting part (603) is provided with two first front connecting ears (605) at intervals along the front-back direction of the longitudinal beam (1). The end of the first front crossbeam (3) is provided between the two first front connecting ears (605). The two first front connecting ears (605) are fixedly connected to the first front crossbeam (3) by a plurality of bolts that pass through the first front connecting ears (605) and the first front crossbeam (3) in sequence.

3. The assembled skateboard chassis frame structure according to claim 1, characterized in that, The crossbeam assembly includes a second front crossbeam (4), and the mounting base assembly includes a second front mounting base (7). The second front mounting base (7) includes an integrally fixedly connected second front mounting part one (701), a second front connecting part (702), and a second front mounting part two (703). The top of the second front mounting part one (701) is integrally fixedly provided with two spaced second front connecting ears one (704). The two second front connecting ears one (704) are respectively provided on the inner and outer sides of the longitudinal beam (1). The two second front connecting ears one (704) are fixedly connected to the longitudinal beam (1) by a plurality of bolts that pass through the second front connecting ears one (704) and the longitudinal beam (1) in sequence. Part (702) is provided on the side of the second front mounting part one (701) facing the inner side of the two longitudinal beams (1). The second front connecting part (702) is provided with a second front mounting part two (703) at the end away from the second front mounting part one (701). Two second front connecting ears two (705) are integrally fixed at intervals along the front and rear direction of the longitudinal beam (1) at the bottom of the second front mounting part two (703). The end of the second front cross beam (4) is provided between the two second front connecting ears two (705). The second front connecting ears two (705) are fixedly connected to the second front cross beam (4) by a plurality of bolts that pass through the second front connecting ears two (705) and the second front cross beam (4) in sequence.

4. The assembled skateboard chassis frame structure according to claim 1, characterized in that, The crossbeam assembly includes a third front crossbeam (5), and the mounting base assembly includes a third front mounting base (8). A vertically arranged third front connecting ear (801) is integrally fixed to the top of the third front mounting base (8). The third front connecting ear (801) abuts against the inner side of the longitudinal beam (1), and is fixedly connected to the longitudinal beam (1) by bolts. A horizontally arranged third front connecting ear (802) is integrally fixed to the outer side of the third front mounting base (8), and abuts against the longitudinal beam. At the bottom of (1), the third front connecting ear 2 (802) is fixedly connected to the bottom of the longitudinal beam (1) by bolts; the bottom of the third front mounting base (8) is integrally provided with two third front connecting ears 3 (803) at intervals along the front and rear direction of the longitudinal beam (1), the end of the third front crossbeam (5) is located between the two third front connecting ears 3 (803), and the two third front connecting ears 3 (803) are fixedly connected to the third front crossbeam (5) by a plurality of bolts that pass through the third front connecting ears 3 (803) and the third front crossbeam (5) in sequence.

5. The assembled skateboard chassis frame structure according to claim 1, characterized in that, The crossbeam assembly includes a first rear crossbeam (9), and the mounting base assembly includes a first rear mounting base (12). The first rear mounting base (12) includes an upper support plate (1201) for abutting against the top of the longitudinal beam (1). The support plate has first rear connecting ears (1202) integrally fixed on both sides. The two first rear connecting ears (1202) are respectively located on the inner and outer sides of the longitudinal beam (1). The two first rear connecting ears (1202) are connected to the longitudinal beam (1) by bolts that pass through the first rear connecting ears (1202) and the longitudinal beam (1) in sequence. Fixed connection; two first rear connecting ears (1203) are integrally fixed on the inner side of the first rear connecting ear (1202) located inside the longitudinal beam (1). The two first rear connecting ears (1203) are spaced apart along the front and rear direction of the longitudinal beam (1). The end of the first rear crossbeam (9) is located between the two first rear connecting ears (1203). The two first rear connecting ears (1203) are fixedly connected to the first rear crossbeam (9) by a plurality of bolts that pass through the first rear connecting ears (1203) and the first rear crossbeam (9) in sequence.

6. The assembled skateboard chassis frame structure according to claim 5, characterized in that, A first lower connecting plate (1204) is integrally fixed between the bottoms of the two first rear connecting ears (1203). The first lower connecting plate (1204) is integrally fixedly connected to the first rear connecting ear (1202). The first lower connecting plate (1204) abuts against the bottom of the first rear crossbeam (9).

7. The assembled skateboard chassis frame structure according to claim 1, characterized in that, The crossbeam assembly includes a second rear crossbeam (10), and the mounting base assembly includes a second rear mounting base (13). The second rear mounting base (13) includes two spaced-apart second rear connecting ears (1301). The bottom ends of the two second rear connecting ears (1301) are integrally fixedly connected by a second lower connecting plate (1302). The two second rear connecting ears (1301) are respectively located on the inner and outer sides of the longitudinal beam (1). The two second rear connecting ears (1301) are connected to the longitudinal beam (1) by a plurality of bolts that pass through the second rear connecting ears (1301) and the longitudinal beam (1) in sequence. The inner side of the second rear connecting ear 1 (1301) located inside the longitudinal beam (1) is integrally fixed with two second rear connecting ears 2 (1303) spaced apart. The two second rear connecting ears 2 (1303) are spaced apart along the front and rear direction of the longitudinal beam (1). The end of the second rear crossbeam (10) is located between the two second rear connecting ears 2 (1303). The two second rear connecting ears 2 (1303) are fixedly connected to the second rear crossbeam (10) by a plurality of bolts that pass through the second rear connecting ears 2 (1303) and the second rear crossbeam (10) in sequence.

8. The assembled skateboard chassis frame structure according to claim 7, characterized in that, A third lower connecting plate (1304) is integrally fixed between the bottoms of the two second rear connecting ears (1303). The third lower connecting plate (1304) is integrally fixedly connected to the second rear connecting ear (1301). The third lower connecting plate (1304) abuts against the bottom of the second rear crossbeam (10).

9. The assembled skateboard chassis frame structure according to claim 1, characterized in that, The crossbeam assembly includes a third rear crossbeam (11), and the mounting base assembly includes a third rear mounting base (14). The third rear mounting base (14) includes a vertical connecting plate (1401), which abuts against the inner side of the longitudinal beam (1). The vertical connecting plate (1401) is fixedly connected to the longitudinal beam (1) by bolts. A lower support plate (1402) is integrally fixed to the bottom of the vertical connecting plate (1401). The vertical connecting plate (1401) is fixedly connected to the bottom of the longitudinal beam (1) by bolts; two spaced third connecting ears (1403) are integrally fixed on the inner side of the vertical connecting plate (1401), and the end of the third rear crossbeam (11) is located between the two third connecting ears (1403). The two third connecting ears (1403) are fixedly connected to the third rear crossbeam (11) by a plurality of bolts that pass through the third connecting ears (1403) and the third rear crossbeam (11) in sequence.

10. The assembled skateboard chassis frame structure according to claim 9, characterized in that, A fourth lower connecting plate (1404) is integrally fixed between the bottoms of the two third connecting ears (1403). The fourth lower connecting plate (1404) is integrally fixedly connected to the vertical connecting plate (1401), and the fourth lower connecting plate (1404) abuts against the bottom of the third rear crossbeam (11).

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