Double longitudinal beam frame and crane

Abstract

The application discloses a double longitudinal beam frame and a crane. The double longitudinal beam frame comprises a longitudinal beam body, a cover plate module and a reinforcing plate. The longitudinal beam body comprises a box-shaped beam and a double beam body arranged in sequence along the length direction. The box-shaped beam and the beam body unit each comprise a bottom plate and a web plate arranged on the bottom plate. The cover plate module comprises a single beam cover plate, an intermediate cover plate and double beam cover plates connected in sequence. The two double beam cover plates are arranged at the ends of the web plates of the two beam body units away from the bottom plate. The intermediate cover plate is provided with a widened butt joint section connected with the double beam cover plates. The widened butt joint section is arranged in an increasing width in the direction of the single beam cover plate towards the double beam cover plate. The outer edges of the double beam cover plates are arranged flush with the widened final outer edges of the widened butt joint section. The reinforcing plate is arranged on the lower side of the cover plate module and extends from the widened butt joint section to the double beam cover plate, so as to improve the rigidity of the double longitudinal beam area, reduce the rigidity difference between the front and rear of the frame, improve the stability of the lifting operation, and ensure a small turning radius without increasing the bottom plate of the frame.

Description

Technical Field

[0001] This application belongs to the field of vehicle frame technology, specifically relating to a double longitudinal beam vehicle frame and a crane. Background Technology

[0002] In construction machinery, such as cranes, the chassis, as a component of the frame, typically faces high requirements regarding its resistance to impacts, torsion, and inertial forces during operation. Some cranes require the engine, gearbox, and other power transmission devices to be located in the middle of the chassis. To make room for the power transmission devices, the chassis must be designed with a single beam structure at one end and a double longitudinal beam structure at the other end.

[0003] However, the large spacing between the two beam units of the double longitudinal beam structure results in poor stiffness of the double longitudinal beam structure and a large difference in stiffness between the front and rear sections of the frame. This leads to large differences in the front and rear deformation of the frame during lifting in some directions, which can easily cause the legs to lift and affect the lifting operation. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies, this application provides a double longitudinal beam frame and crane, which aims to solve the technical problem of poor rigidity of the double longitudinal beam structure.

[0005] To achieve the above objectives, this application provides a double longitudinal beam frame, wherein the double longitudinal beam frame includes a longitudinal beam body, a cover plate module, and reinforcing plates. The longitudinal beam body includes a box beam and a double beam body arranged sequentially along the length direction. The double beam body includes two beam units arranged in parallel. Both the box beam and the beam unit include a bottom plate and a web plate disposed on the bottom plate. The cover plate module includes a single beam cover plate, an intermediate cover plate, and a double beam cover plate connected sequentially. The single beam cover plate is disposed at the end of the web of the box beam away from the bottom plate. There are two double beam cover plates, which are disposed at the ends of the webs of the two beam units away from the bottom plate. The intermediate cover plate has a widened connecting section connected to the double beam cover plate. The widened connecting section is widened in the direction from the single beam cover plate to the double beam cover plate. The outer edge of the double beam cover plate is flush with the final outer edge of the widened connecting section. The reinforcing plates are disposed on the lower side of the cover plate module and extend from the widened connecting section to the double beam cover plate.

[0006] In this embodiment, the reinforcing plate includes a straight diagonal brace and a supporting stiffener. The straight diagonal brace extends from the widened joint section to the double beam cover plate and is inclined outward in the direction from bottom to top. The upper end of the straight diagonal brace is welded to the lower side of the cover plate module, and the lower end of the straight diagonal brace is welded to the web of the longitudinal beam body, so that the straight diagonal brace, the cover plate module and the web plate enclose a stiffener space, and the supporting stiffener is located in the stiffener space.

[0007] In this embodiment of the application, the number of supporting stiffeners is at least two, and the at least two supporting stiffeners are arranged sequentially at intervals along the length direction of the straight diagonal brace. The straight diagonal brace is provided with welding process holes between any two adjacent supporting stiffeners.

[0008] In this embodiment, the widened connecting section includes an arc-shaped widening section and a straight connecting section arranged sequentially along the direction from the single beam cover plate toward the double beam cover plate. The arc-shaped widening section is configured to extend from the side facing the single beam cover plate to the side away from the single beam cover plate in an arc shape. The outer edge of the straight connecting section is aligned with the outer edge of the arc-shaped widening section. The straight diagonal brace is configured to extend from the straight connecting section to the double beam cover plate. The reinforcing plate also includes an arc-shaped diagonal brace, which is aligned with the straight diagonal brace. The upper end of the arc-shaped diagonal brace is welded to the lower side of the arc-shaped widening section, and the lower end of the arc-shaped diagonal brace is welded to the web of the longitudinal beam body.

[0009] In this embodiment, the widened butt joint section and the double beam cover plate are designed to be welded together, and the widened butt joint section and the double beam cover plate are respectively provided with a first welding surface and a second welding surface, which are inclined and correspondingly joined together.

[0010] In this embodiment, the widened butt joint section is provided with two first welding surfaces, which are respectively matched with the second welding surfaces of the two double beam cover plates. The first welding surfaces are inclined inward in the direction from the widened butt joint section toward the corresponding double beam cover plate.

[0011] In this embodiment of the application, an arc-shaped surface that is concave towards one side of the single beam cover plate is provided between the two first welding surfaces.

[0012] In this embodiment, the single-beam cover plate, the intermediate cover plate, and the double-beam cover plate are designed as integrally molded parts.

[0013] In this embodiment, the outer edges of the bottom plates of the box girder on opposite sides are flush with the outer edges of the bottom plates of the beam units on the same side.

[0014] In the embodiments of this application, the web of the box girder and the outer web of the beam unit on the same side are integrally formed components.

[0015] In the embodiments of this application, the web of the box girder is inclined outward or perpendicular to the bottom plate in the direction from bottom to top.

[0016] In the embodiments of this application, the outer web of the beam unit is inclined outward or perpendicular to the bottom plate in the direction from bottom to top.

[0017] In addition, this application provides a crane that includes the double longitudinal beam frame as described above.

[0018] Through the above technical solution, the double longitudinal beam frame provided in this application embodiment has the following beneficial effects: In the technical solution of this application, two beam units are arranged in parallel and spaced apart in the left-right direction. Both the box girder and the beam unit include a bottom plate and a web plate on the bottom plate. A single beam cover plate is placed on the end of the web plate of the box girder away from the bottom plate. The single beam cover plate, the bottom plate of the box girder, and the web plate of the box girder enclose a stable beam structure. Two double beam cover plates are arranged one-to-one with the two beam units. The double beam cover plates are placed on the end of the web plate of the corresponding beam unit away from the bottom plate. The double beam cover plates, the bottom plate of the beam unit, and the web plate of the beam unit enclose a stable beam structure. The intermediate cover plate has a widened joint section that connects to the double beam cover plates. The widened joint section increases in width along the direction from the single beam cover plate to the double beam cover plate, and the width of the widened joint section is greater than the width of the single beam cover plate. The outer edge of the double beam cover plate is flush with the final outer edge of the widened joint section, wherein the final outer edge of the widened joint section refers to the outer edge of the widened joint section at its widest point. The outer edge of the double-beam cover plate is flush with the final outer edge of the widened connecting section, thus widening both the widened connecting section and the double-beam cover plate so that they can partially extend beyond the web of the longitudinal beam body. A reinforcing plate is located on the underside of the cover plate module and extends from the widened connecting section to the double-beam cover plate. The reinforcing plate, the web of the longitudinal beam body, and the cover plate module form a stable support structure, increasing the cross-section of the beam unit and improving its stiffness. This increases the stiffness of the double longitudinal beam frame, thereby reducing the stiffness difference between the front and rear of the frame and improving lifting operation stability without needing to increase the frame floor plate, ensuring a smaller turning radius.

[0019] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings: Figure 1 This is a schematic diagram of the structure of a double longitudinal beam frame according to an embodiment of this application from one perspective; Figure 2 This is a structural schematic diagram of a double longitudinal beam frame according to an embodiment of this application from another perspective; Figure 3 This is a structural schematic diagram of a double longitudinal beam frame according to an embodiment of this application from another perspective; Figure 4This is a partial structural schematic diagram of a double longitudinal beam frame according to an embodiment of this application; Figure 5 This is a schematic cross-sectional view of the double beams in a double longitudinal beam frame according to an embodiment of this application; Figure 6 This is a schematic cross-sectional view of the box beam in a double longitudinal beam frame according to an embodiment of this application.

[0021] Explanation of reference numerals in the attached figures Detailed Implementation

[0022] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0023] The descriptions of directions such as "up", "down", "front", "back", "left", and "right" in this application are as follows: Figure 1 The directions shown are for reference only and are used to interpret the location. Figure 1 The relative positional relationship between the components in the shown posture is such that if the specific posture changes, the directional indication will also change accordingly.

[0024] The double longitudinal beam frame and crane of this application are described below with reference to the accompanying drawings.

[0025] like Figures 1 to 6 As shown, this application provides a double longitudinal beam frame, wherein the double longitudinal beam frame includes a longitudinal beam body, a cover plate module 30, and reinforcing plates 40. The longitudinal beam body includes a box beam 10 and a double beam body arranged sequentially along the length direction. The double beam body includes two beam units 20 arranged in parallel. Both the box beam 10 and the beam unit 20 include a bottom plate 11 and a web plate 12 disposed on the bottom plate 11. The cover plate module 30 includes a single beam cover plate 31, an intermediate cover plate 32, and a double beam cover plate 33 connected sequentially. The single beam cover plate 31 is disposed at the end of the web plate 12 of the box beam 10 away from the bottom plate 11. There are two double beam cover plates 33. The web plate 12 of the two beam units 20 is located at the end away from the bottom plate 11. The middle cover plate 32 is provided with a widened connecting section 321 that connects to the double beam cover plate 33. The widened connecting section 321 is widened in the direction from the single beam cover plate 31 to the double beam cover plate 33. The outer edge of the double beam cover plate 33 is flush with the widened final outer edge of the widened connecting section 321. The reinforcing plate 40 is located on the lower side of the cover plate module 30 and extends from the widened connecting section 321 to the double beam cover plate 33.

[0026] Two beam units 20 are arranged in parallel and spaced apart in the left-right direction. Both the box girder 10 and the beam unit 20 include a bottom plate 11 and a web 12 on the bottom plate 11. A single beam cover plate 31 is placed over the end of the web 12 of the box girder 10 away from the bottom plate 11. The single beam cover plate 31, the bottom plate 11 of the box girder 10, and the web 12 of the box girder 10 enclose a stable beam structure. Two double beam cover plates 33 are arranged one-to-one with the two beam units 20. The double beam cover plates 33 are placed over the end of the web 12 of the corresponding beam unit 20 away from the bottom plate 11. The double beam cover plates 33, the bottom plate 11 of the beam unit 20, and the web 12 of the beam unit 20 enclose a stable beam structure. The intermediate cover plate 32 is provided with a widened butt joint section 321 that connects to the double beam cover plates 33. The widened connecting section 321 is configured with an increasing width along the direction from the single beam cover plate 31 toward the double beam cover plate 33, and the width of the widened connecting section 321 is greater than the width of the single beam cover plate 31. The outer edge of the double beam cover plate 33 is configured to be flush with the final outer edge of the widened connecting section 321, wherein the final outer edge of the widened connecting section 321 refers to the outer edge of the widened connecting section 321 at its widest point. The outer edge of the double beam cover plate 33 is configured to be flush with the final outer edge of the widened connecting section 321, so that the widened connecting section 321 and the double beam cover plate 33 can partially extend beyond the web plate 12 of the longitudinal beam body. The reinforcing plate 40 is located on the underside of the cover plate module 30. The reinforcing plate 40 extends from the widened butt joint section 321 to the double beam cover plate 33. The reinforcing plate, the web plate 12 of the longitudinal beam body, and the cover plate module 30 form a stable support structure, which increases the cross section of the beam unit 20 and improves the stiffness of the beam unit 20. This increases the stiffness of the double longitudinal beam frame, thereby reducing the stiffness difference between the front and rear of the frame and improving the stability of lifting operations. It does not require increasing the bottom plate of the frame, which can ensure a smaller turning radius.

[0027] In the embodiments of this application, please refer to Figure 1 and Figure 4 ,in, Figure 4 The central support rib 42 and part of the web 12 are shown in perspective and represented by dashed lines. The reinforcing plate 40 includes a straight diagonal brace 41 and a support rib 42. The straight diagonal brace 41 extends from the widened butt joint section 321 to the double beam cover plate 33 and is inclined outward in the direction from bottom to top. The upper end of the straight diagonal brace 41 is welded to the lower side of the cover plate module 30, and the lower end of the straight diagonal brace 41 is welded to the web 12 of the longitudinal beam body, so that the straight diagonal brace 41, the cover plate module 30 and the web 12 enclose a rib space 44, and the support rib 42 is located in the rib space 44.

[0028] A space is formed between the two beam units 20. The inner side refers to the side of the beam unit 20 facing the space, and the outer side refers to the side of the beam unit 20 away from the space. The straight diagonal brace 41 is inclined outward in the direction from bottom to top, that is, the straight diagonal brace 41 is inclined away from the space in the direction from bottom to top. The straight diagonal brace 41 extends from the widened joint section 321 to the double beam cover plate 33. The upper end of the straight diagonal brace 41 is welded to the lower side of the cover plate module 30. That is, the straight diagonal brace 41 is welded to the lower side of the widened joint section 321 and the lower side of the double beam cover plate 33. The welding method stably and reliably fixes the upper end of the straight diagonal brace 41 to the lower side of the cover plate module 30. The lower end of the straight diagonal brace 41 is welded to the web plate 12 of the longitudinal beam body so that the lower end of the straight diagonal brace 41 can be fixed. The straight diagonal brace 41, the cover plate module 30 and the web plate 12 enclose a stiffening space 44. The cross section of the stiffening space 44 is triangular. A supporting stiffening plate 42 is provided in the stiffening space 44. By providing support through the supporting stiffening plate 42, the stiffness of the beam unit 20 is increased, and the structural stability of the double longitudinal beam frame is further improved.

[0029] In the embodiments of this application, please refer to Figure 1 and Figure 4 The number of supporting stiffeners 42 is at least two, and at least two supporting stiffeners 42 are arranged alternately along the length direction of the straight diagonal brace 41. The straight diagonal brace 41 is provided with welding process holes 411 between any two adjacent supporting stiffeners 42.

[0030] By setting at least two supporting stiffeners 42 sequentially spaced along the length of the straight diagonal brace 41, the supporting stiffeners 42 can support multiple positions, making the stress on the reinforcing plate 40 more uniform and further improving the stiffness of the beam unit 20. The straight diagonal brace 41 has welding process holes 411 between any two adjacent supporting stiffeners 42. The supporting stiffeners 42 and the cover plate module 30 can be welded through the welding process holes 411. A welding torch can be inserted into the stiffener space 44 through the welding process holes 411 to weld the supporting stiffeners 42 and the cover plate module 30.

[0031] During the welding process, the lower end of the straight diagonal brace 41 can be welded to the web plate 12 first, then one side of the support rib 42 can be welded to the straight diagonal brace 41, and the other side of the support rib 42 can be welded to the web plate 12. Then, the cover plate module 30 is put on, and the upper end of the straight diagonal brace 41 is welded to the cover plate module 30. Then, the welding gun is inserted into the rib space 44 through the welding process hole 411 to weld the top edge of the support rib 42 to the cover plate module 30.

[0032] It is understandable that the welding process hole 411 can be sealed after the supporting stiffener 42 is welded.

[0033] In another embodiment, a segmented bracing plate can be used, with a bracing plate welded between two supporting stiffeners 42, so that the bracing plate does not need to be provided with welding process holes 411.

[0034] In the embodiments of this application, please refer to Figures 1 to 3 The widened connecting section 321 includes an arc-shaped widening section 3211 and a straight connecting section 3212 arranged sequentially along the direction from the single beam cover plate 31 toward the double beam cover plate 33. The arc-shaped widening section 3211 is configured to extend from the side facing the single beam cover plate 31 to the side away from the single beam cover plate 31 in an arc-shaped widening configuration. The outer edge of the straight connecting section 3212 is aligned with the outer edge of the arc-shaped widening section 3211. The straight diagonal brace 41 extends from the straight connecting section 3212 to the double beam cover plate 33. The reinforcing plate 40 also includes an arc-shaped diagonal brace 43, which is aligned with the straight diagonal brace 41. The upper end of the arc-shaped diagonal brace 43 is welded to the lower side of the arc-shaped widening section 3211, and the lower end of the arc-shaped diagonal brace 43 is welded to the web plate 12 of the longitudinal beam body.

[0035] The arc-shaped widening section 3211 is designed to extend from the side facing the single beam cover plate 31 to the side facing away from the single beam cover plate 31 in an arc shape, meaning that the width of the side of the arc-shaped widening section 3211 facing away from the single beam cover plate 31 is greater than the width of the side facing the single beam cover plate 31. The outer edge of the straight butt joint section 3212 is aligned with the outer edge of the arc-shaped widening section 3211, and the distance between the outer edges of the two sides of the straight butt joint section 3212 is equal to the distance between the outer edges of the two sides of the arc-shaped widening section 3211. By setting the arc-shaped widening section 3211, a smooth transition can be achieved between the single beam cover plate 31 and the straight butt joint section 3212, improving the torsional resistance of the cover plate module 30.

[0036] The straight diagonal brace 41 extends from the straight connecting section 3212 to the double beam cover plate 33. The curved diagonal brace 43 is connected to the straight diagonal brace 41. The upper end of the curved diagonal brace 43 is welded to the lower side of the curved widening section 3211. The upper edge of the curved diagonal brace 43 is curved, and the upper edge of the curved diagonal brace 43 matches the outer edge shape of the curved widening section 3211. The lower end of the curved diagonal brace 43 is welded to the web plate 12 of the longitudinal beam body. By setting the curved diagonal brace 43 to strengthen the support of the curved widening section 3211, the rigidity of the double longitudinal beam frame is further improved.

[0037] It is understandable that the arc-shaped diagonal brace 43 is inclined outward from bottom to top, and the length of the arc-shaped diagonal brace 43 increases from the side facing the single beam cover plate 31 to the side away from the single beam cover plate 31. The space formed by the arc-shaped diagonal brace 43, the arc-shaped widened section 3211 and the web plate 12 may also be provided with supporting stiffeners 42.

[0038] In the embodiments of this application, please refer to Figure 2 The widened butt joint section 321 and the double beam cover plate 33 are designed to be welded together, and the widened butt joint section 321 and the double beam cover plate 33 are respectively provided with a first welding surface 3213 and a second welding surface, which are inclined and correspondingly spliced ​​together.

[0039] The widened butt joint section 321 is provided with a first welding surface 3213, and the double beam cover plate 33 is provided with a second welding surface. The first welding surface 3213 and the second welding surface are correspondingly joined together, and the first welding surface 3213 and the second welding surface are inclined, so that the joining welding length of the first welding surface 3213 and the second welding surface is larger, thereby improving the connection strength between the widened butt joint section 321 and the double beam cover plate 33.

[0040] Based on this, the widened butt joint section 321 is provided with two first welding surfaces 3213, which are respectively matched with the second welding surfaces of the two double beam cover plates 33. The first welding surfaces 3213 are inclined inward in the direction from the widened butt joint section 321 toward the corresponding double beam cover plate 33.

[0041] Two first welding surfaces 3213 are symmetrically arranged, and two second welding surfaces of the two double beam cover plates 33 are symmetrically arranged. The two first welding surfaces 3213 are respectively joined with the second welding surfaces of the two double beam cover plates 33 in a one-to-one correspondence. Furthermore, the first welding surfaces 3213 are inclined inward in the direction from the widened butt joint section 321 toward the corresponding double beam cover plate 33, that is, the first welding surfaces 3213 are inclined inward in the direction from front to back.

[0042] In another embodiment, the first welded surface 3213 may also be inclined outward in the direction of the self-widening butt joint section 321 toward the corresponding double beam cover plate 33.

[0043] In the embodiments of this application, please refer to Figure 2 An arc-shaped surface 3214 that is concave towards one side of the single beam cover plate 31 is provided between the two first welding surfaces 3213. By setting the arc-shaped surface 3214 to connect the two first welding surfaces 3213, stress concentration is avoided and the structural stability and reliability of the double longitudinal beam frame are improved.

[0044] In another embodiment, the single-beam cover plate 31, the intermediate cover plate 32, and the double-beam cover plate 33 are designed as integrally formed parts, which saves assembly steps, reduces assembly errors, and improves structural stability and reliability.

[0045] In this embodiment, the intermediate cover plate 32 includes a single beam butt section 322 and a widened butt section 321 connected in sequence. The single beam butt section 322 and the single beam cover plate 31 are welded together, and the outer edge of the single beam butt section 322 is flush with the outer edge of the single beam cover plate 31.

[0046] By welding the single beam butt joint section 322 to the single beam cover plate 31, the intermediate cover plate 32 can be stably and reliably connected to the single beam cover plate 31. The outer edge of the single beam butt joint section 322 is flush with the outer edge of the single beam cover plate 31, and the width of the single beam butt joint section 322 is the same as the width of the single beam cover plate 31. The width of the single beam butt joint section is smaller than the width of the widened butt joint section 321.

[0047] The widened docking section 321 is provided with a mounting plate 323, which is circular and is used to mount the turntable of the crane.

[0048] In this embodiment, the outer edges of the bottom plate 11 of the box girder 10 on both sides are flush with the outer edges of the bottom plate 11 of the beam unit 20 on the same side.

[0049] The distance between the outer edges of the opposite sides of the bottom plate 11 of the box girder 10 is L1, meaning the width of the bottom plate 11 of the box girder 10 is L1. The distance between the outer edges of the opposite sides of the double beam is L2, where L1 = L2. Furthermore, the outer edges of the left and right sides of the bottom plate 11 of the box girder 10 are flush with the outer edges of the bottom plate 11 of the beam unit 20 on the same side, ensuring that the width of the front and rear bottom plates 11 of the double longitudinal beam frame remains consistent. This guarantees a smaller turning radius and ensures that the turning angle range of the front and rear wheels is the same.

[0050] Understandably, a smaller turning radius is generally desirable, but a smaller turning radius requires a larger wheel angle. To avoid interference between the wheels and the bottom plate 11 of the double longitudinal beam frame during steering, the width of the bottom plate 11 needs to be reduced. However, a smaller bottom plate 11 also reduces the frame cross-section, decreasing the frame's strength and rigidity. Now, by adding a reinforcing plate 40 to the upper part of the frame, the frame's strength and rigidity are improved, while the width of the bottom plate 11 does not need to be too large. This ensures a larger wheel angle, allowing for a smaller turning radius.

[0051] In the embodiments of this application, please refer to Figure 5 and Figure 6The web 12 of the box girder 10 and the outer web 12 of the beam unit 20 on the same side are integrally formed. That is, the left web 12 of the box girder 10 and the outer web 12 of the left beam unit 20 are integrally formed, and the right web 12 of the box girder 10 and the outer web 12 of the right beam unit 20 are integrally formed. This saves assembly steps between the web 12 of the box girder 10 and the outer web 12 of the beam unit 20 on the same side, reduces assembly errors, and improves structural stability and reliability.

[0052] In another embodiment, the web 12 of the box girder 10 is welded to the outer web 12 of the beam unit 20 on the same side.

[0053] In the embodiments of this application, please refer to Figure 6 The web 12 of the box girder 10 is inclined outward in the direction from bottom to top. By inclining the web 12 of the box girder 10, the cross section of the box girder 10 is increased, thereby increasing the torsional resistance of the box girder 10.

[0054] Alternatively, the web 12 of the box girder 10 is set perpendicular to the bottom plate 11, so that the cross-section of the box girder 10 is rectangular and the structure is stable.

[0055] Based on this, please refer to Figure 5 The outer web 12 of the beam unit 20 is inclined outward in the direction from bottom to top. By inclining the outer web 12 of the beam unit 20, the cross section of the beam unit 20 is increased, thereby increasing the torsional resistance of the beam unit 20.

[0056] Alternatively, the outer web 12 of the beam unit 20 is set perpendicular to the bottom plate 11, so that the cross section of the beam unit 20 is rectangular and the structure is stable.

[0057] In addition, this application also provides a crane, which includes the double longitudinal beam frame described above. Since the crane adopts all the technical solutions of the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here.

[0058] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0059] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," 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, an electrical connection, or a connection that allows communication between components; 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 expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. 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.

[0061] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A dual rail vehicle frame, characterized by, The double longitudinal beam frame includes: The longitudinal beam body includes a box beam (10) and a double beam body arranged sequentially along the length direction. The double beam body includes two beam units (20) arranged in parallel. Both the box beam (10) and the beam unit (20) include a bottom plate (11) and a web plate (12) provided on the bottom plate (11). The cover plate module (30) includes a single beam cover plate (31), an intermediate cover plate (32) and a double beam cover plate (33) connected in sequence. The single beam cover plate (31) is located at the end of the web plate (12) of the box beam (10) away from the bottom plate (11). There are two double beam cover plates (33). The two double beam cover plates (33) are respectively located at the ends of the web plates (12) of the two beam units (20) away from the bottom plate (11). The intermediate cover plate (32) is provided with a widened butt joint section (321) connected to the double beam cover plate (33). The widened butt joint section (321) is widened in the direction from the single beam cover plate (31) toward the double beam cover plate (33). The outer edge of the double beam cover plate (33) is flush with the final widened outer edge of the widened butt joint section (321). A reinforcing plate (40) is provided on the underside of the cover plate module (30) and extends from the widened butt joint section (321) to the double beam cover plate (33).

2. The dual rail vehicle frame of claim 1, wherein, The reinforcing plate (40) includes a straight diagonal brace (41) and a supporting stiffener (42). The straight diagonal brace (41) extends from the widened butt joint section (321) to the double beam cover plate (33) and is inclined outward in the direction from bottom to top. The upper end of the straight diagonal brace (41) is welded to the lower side of the cover plate module (30), and the lower end of the straight diagonal brace (41) is welded to the web plate (12) of the longitudinal beam body, so that the straight diagonal brace (41), the cover plate module (30) and the web plate (12) enclose a stiffener space (44), and the supporting stiffener (42) is located in the stiffener space (44).

3. The dual rail frame of claim 2, wherein, The number of the supporting stiffeners (42) is at least two, and the at least two supporting stiffeners (42) are arranged sequentially at intervals along the length direction of the straight diagonal brace (41). The straight diagonal brace (41) is provided with welding process holes (411) between any two adjacent supporting stiffeners (42).

4. The dual rail vehicle frame of claim 2, wherein, The widened connecting section (321) includes an arc-shaped widening section (3211) and a straight connecting section (3212) arranged sequentially along the direction from the single beam cover plate (31) toward the double beam cover plate (33). The arc-shaped widening section (3211) is configured to extend from the side facing the single beam cover plate (31) to the side away from the single beam cover plate (31) in an arc-shaped widening manner. The outer edge of the straight connecting section (3212) is straight with the outer edge of the arc-shaped widening section (3211). The straight diagonal brace (41) is configured to extend from the straight connecting section (3212) to the double beam cover plate (33). The reinforcing plate (40) also includes an arc-shaped diagonal brace (43), which is connected to the straight diagonal brace (41). The upper end of the arc-shaped diagonal brace (43) is welded to the lower side of the arc-shaped widening section (3211), and the lower end of the arc-shaped diagonal brace (43) is welded to the web plate (12) of the longitudinal beam body.

5. The twin rail frame of any one of claims 1 to 4, wherein, The widened butt joint section (321) and the double beam cover plate (33) are designed to be welded together, and the widened butt joint section (321) and the double beam cover plate (33) are respectively provided with a first welding surface (3213) and a second welding surface, which are inclined and correspondingly spliced ​​together.

6. The dual rail frame of claim 5, wherein, The widened butt joint section (321) is provided with two first welding surfaces (3213), and the two first welding surfaces (3213) are respectively matched with the second welding surfaces of the two double beam cover plates (33). The first welding surfaces (3213) are inclined inward in the direction from the widened butt joint section (321) toward the corresponding double beam cover plate (33). And / or, an arcuate surface (3214) is provided between the two first welded surfaces (3213) and is recessed toward one side of the single beam cover plate (31).

7. The dual rail frame of any one of claims 1 to 4, wherein, The single beam cover plate (31), the intermediate cover plate (32), and the double beam cover plate (33) are integrally formed components.

8. The dual rail frame of any one of claims 1 to 4, wherein, The outer edges of the bottom plate (11) of the box girder (10) on opposite sides are set to be flush with the outer edges of the bottom plate (11) of the beam unit (20) set on the same side.

9. The dual rail frame of any one of claims 1 to 4, wherein, The web (12) of the box girder (10) and the outer web (12) of the beam unit (20) on the same side are integrally formed parts; And / or, the web (12) of the box girder (10) is inclined outward in the direction from bottom to top or is perpendicular to the bottom plate (11); And / or, the outer web (12) of the beam unit (20) is inclined outward in the direction from bottom to top or is perpendicular to the bottom plate (11).

10. A crane, characterized in that The crane includes a double longitudinal beam frame as described in any one of claims 1 to 9.

Images