A cross frame and a method for manufacturing the same

Abstract

The present invention discloses a cross frame and a manufacturing method thereof, wherein the cross frame comprises a first connecting plate for connecting the upper end of a vehicle frame; a second connecting plate for connecting the lower end of the vehicle frame; a support plate connected between the first connecting plate and the second connecting plate, wherein the first connecting plate, the support plate and the second connecting plate form a U-shape or an I-shape; and a reinforcing plate, wherein the upper end of the reinforcing plate and the lower end of the reinforcing plate are connected between the first connecting plate and the second connecting plate, and the rear end of the reinforcing plate is connected to the support plate. The cross frame is formed by combining the first connecting plate, the second connecting plate, the support plate and the reinforcing plate, so that the weight of the cross frame becomes lighter and it is easier to disassemble and install; and since the first connecting plate, the support plate and the second connecting plate form a U-shape or an I-shape, the strength and rigidity of the cross frame become better; and the reinforcing plate can also increase the strength and rigidity of the cross frame, so that the vehicle body can withstand impact.

Description

Technical Field

[0001] The present invention relates to the field of support technology, and in particular to a cross frame and a manufacturing method thereof. Background Art

[0002] The bus frame is the assembly basis of the entire bus. The rear cross frame, as the end of the frame, is an important prerequisite for ensuring the torsional rigidity of the frame and bearing longitudinal loads.

[0003] The existing tail cross frame has a large mass and low strength and rigidity. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a cross frame, which has light weight and good strength and rigidity.

[0005] The invention also provides a method for manufacturing the cross frame.

[0006] A cross frame according to an embodiment of the first aspect of the present invention includes a first connecting plate for connecting the upper end of the frame; a second connecting plate for connecting the lower end of the frame; a support plate connected between the first connecting plate and the second connecting plate, the first connecting plate, the support plate and the second connecting plate forming a U-shape or an I-shape; and a reinforcing plate, the upper end of the reinforcing plate and the lower end of the reinforcing plate being connected between the first connecting plate and the second connecting plate, the rear end of the reinforcing plate being connected to the support plate.

[0007] A cross frame according to an embodiment of the present invention has at least the following beneficial effects: the cross frame is formed by a combination of the first connecting plate, the second connecting plate, the support plate and the reinforcing plate, so that the weight of the cross frame is reduced and it is easier to disassemble and install; and because the first connecting plate, the support plate and the second connecting plate form a U-shape or an I-shape, the strength and rigidity of the cross frame are improved; furthermore, the reinforcing plate can also increase the strength and rigidity of the cross frame, so that the vehicle body can withstand impact.

[0008] According to some embodiments of the present invention, the first connecting plate and the second connecting plate are both provided with connecting ends, and the connecting ends are provided with arc structures, and the arc structures are used to unload the stress of the cross frame, and the arc structures can increase the strength of the connecting ends.

[0009] According to some embodiments of the present invention, the connecting end of the first connecting plate and the connecting end of the second connecting plate both protrude forward to form an arch structure, and the arch structure can enhance the impact resistance of the frame.

[0010] According to some embodiments of the present invention, a plurality of connection holes are arranged in a distributed manner on the connection end, and the plurality of connection holes makes the connection strength between the cross frame and the frame better than the connection strength of a single connection hole.

[0011] According to some embodiments of the present invention, the support plate includes a vertical portion and an inclined portion distributed in sequence from top to bottom, and the inclined portion is inclined downward from rear to front, and the inclined portion can reserve space for installing a trailer hook at the rear end of the frame.

[0012] According to some embodiments of the present invention, a positioning and mounting hole is provided on the vertical portion, and the positioning and mounting hole is used to position the frame to facilitate the installation of the cross frame.

[0013] According to some embodiments of the present invention, a socket is provided on the vertical portion, and a pin for connecting to the socket is provided at the rear end of the reinforcing plate, so as to facilitate the connection of the reinforcing plate.

[0014] A method for manufacturing a horizontal frame comprises the following steps:

[0015] Prepare, prepare 510L steel plate;

[0016] Processing: 510L steel plate is laser cut to form a first connecting plate, a supporting plate and a second connecting plate;

[0017] Cut holes: Use laser to cut connecting holes at corresponding positions of the first connecting plate and the second connecting plate; Cut installation positioning holes and plug holes on the support plate;

[0018] Bending: bending the first connecting plate along the bending line between the first connecting plate and the supporting plate so that the first connecting plate is perpendicular to the supporting plate; bending the second connecting plate along the bending line between the second connecting plate and the supporting plate so that the second connecting plate is perpendicular to the supporting plate;

[0019] Making a reinforcing plate: cutting a 510L steel plate by laser to form a reinforcing plate, and cutting out the pins and wire openings of the reinforcing plate at the same time;

[0020] Welding: insert the pins of the reinforcement plate into the sockets and weld the reinforcement plate to the cross frame by carbon dioxide shielded welding.

[0021] A method for manufacturing a cross frame according to the present invention has at least the following beneficial effects: the integrity of the cross frame is ensured by adopting a bending processing method, that is, the structural strength and rigidity of the cross frame can be maintained, and the installation positioning holes and the plug holes are processed by laser cutting, which is convenient and quick; at the same time, the reinforcement plate is also formed by laser cutting, which is suitable for mass production and improves efficiency.

[0022] According to some embodiments of the present invention, in the welding step, the weld height between the reinforcing plate and the first connecting plate or the second connecting plate is 5 mm, the weld is a V-shaped groove, the length of the weld is 30 mm, and the weld is away from the bending side of the cross frame to avoid thermal deformation that may damage the strength of the cross frame.

[0023] According to some embodiments of the present invention, the ratio of the width of the first connecting plate or the width of the second connecting plate to the width of the support plate is 1:3 to avoid bending deformation caused by the width of the first connecting plate or the second connecting plate being too wide.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 A schematic diagram of the structure of a horizontal frame according to an embodiment of the present invention;

[0027] Figure 2 for Figure 1 An exploded view of the cross frame is shown;

[0028] Figure 3 for Figure 1 A right side view of the cross frame is shown;

[0029] Figure 4 for Figure 1 A top view of a first connecting plate or a second connecting plate of a cross frame is shown.

[0030] The first connecting plate 100, the second connecting plate 200, the supporting plate 300, the reinforcing plate 400, the connecting end 500,

[0031] The arc structure 510, the connecting hole 520, the vertical portion 310, the inclined portion 320, the positioning and mounting hole 311,

[0032] The plug hole 312 , the plug pin 420 , the hollow hole 314 , the wire harness hole 321 , and the wire passage 410 . DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In the description of the present invention, the meaning of "above", "below", "exceed", etc. is not inclusive of the number itself, and the meaning of "above", "below", "within", etc. is inclusive of the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0036] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0037] Reference Figures 1 to 4, A cross frame, comprising a first connecting plate 100 for connecting to the upper end of a vehicle frame; a second connecting plate 200 for connecting to the lower end of the vehicle frame; a support plate 300 connected between the first connecting plate 100 and the second connecting plate 200, with the first connecting plate 100, the support plate 300 and the second connecting plate 200 forming a U shape or an I shape; a reinforcing plate 400, the upper end and the lower end of the reinforcing plate 400 being connected between the first connecting plate 100 and the second connecting plate 200, and the rear end of the reinforcing plate 400 being connected to the support plate 300. The cross frame is formed by the combination of the first connecting plate 100, the second connecting plate 200, the support plate 300 and the reinforcing plate 400, making the mass of the cross frame lighter and easier to disassemble and install; and because the first connecting plate 100, the support plate 300 and the second connecting plate 200 form a U shape or an I shape, the strength and stiffness of the cross frame become better; furthermore, the reinforcing plate 400 can also increase the strength and stiffness of the cross frame, enabling the vehicle body to withstand impacts. It can be understood that the reinforcing plate 400 is welded to the first connecting plate 100, the second connecting plate 200 and the support plate 300 by CO2 gas shielded welding. It should be noted that both the first connecting plate 100 and the second connecting plate 200 are provided with protrusions, and the protrusions are used to increase the welding surface of the reinforcing plate 400 and enhance the welding strength. It can be understood that the reinforcing plate 400 is made of 510L steel plate with a thickness of 5 mm by laser cutting, with simple processes, high production efficiency and can be mass-produced; it can be understood that the first connecting plate 100, the support plate 300 and the second connecting plate 200 can be welded in sequence to form a U shape or an I shape, or can be formed into a U shape by bending a single plate twice.

[0038] It can be understood that 510L refers to hot-rolled steel plates and strips for automotive beams in GB / T 3273-2005. The steel grade consists of two parts, the lower limit value of the tensile strength and the first letter L of the Chinese pinyin "liang". For example: 510L, where 510 - represents the lower limit of the tensile strength, with the unit of N / mm 2 . L - represents automotive longitudinal and cross frames. This material is commonly used in the automotive industry for automotive beam plates.

[0039] In some embodiments, the first connecting plate 100, the support plate 300 and the second connecting plate 200 form a cross frame in a U shape or an I shape, which is bent from 510L type steel. It can be understood that the reinforcing plate 400 is provided with a chamfer near the bending position, and the chamfer is used to avoid the bending position of the cross frame, reduce the deformation of the cross frame, and enhance the torsional resistance of the cross frame.

[0040] In some embodiments, the first connecting plate 100 and the second connecting plate 200 are both provided with a connecting end 500, and the connecting end 500 is provided with an arc structure 510, and the arc structure 510 is used to unload the stress of the cross frame, and the arc structure 510 can increase the strength of the connecting end 500. It should be noted that the outer contour turning position of the connecting end 500 is provided with a rounded corner, and the rounded corner can enhance the structural rigidity of the connecting end 500 and reduce stress concentration.

[0041] In some embodiments, the connecting end 500 of the first connecting plate 100 and the connecting end 500 of the second connecting plate 200 both protrude forward to form an arch structure, and the arch structure can enhance the anti-collision capability of the vehicle frame.

[0042] In some embodiments, a plurality of connection holes 520 are arranged in a distributed manner on the connection end 500 . The plurality of connection holes 520 make the connection strength between the cross frame and the vehicle frame better than the connection strength of a single connection hole.

[0043] In some embodiments, the support plate 300 includes a vertical portion 310 and an inclined portion 320 distributed from top to bottom. The inclined portion 320 is inclined downward from back to front. The inclined portion 320 can reserve space for installing a trailer hook at the rear end of the frame and can also serve as an anti-collision skid.

[0044] In some embodiments, a positioning and mounting hole 311 is provided on the vertical portion 310 , and the positioning and mounting hole 311 is used to position the frame to facilitate the installation of the cross frame.

[0045] In some embodiments, a socket 312 is provided on the vertical portion 310, and a pin 420 for connecting the socket 312 is provided at the rear end of the reinforcing plate 400 to facilitate connecting the reinforcing plate 400. Providing the socket 312 can avoid direct welding of the vertical portion 310 of the support plate 300, reduce stress concentration, and maintain structural rigidity.

[0046] In some embodiments, a hollow hole 314 is formed on the vertical portion 310 , and the hollow hole 314 is used to reduce the weight of the cross frame.

[0047] In some embodiments, a plurality of cable binding holes 321 are formed on the inclined portion 320 , and the cable binding holes 321 are convenient for binding cables.

[0048] In some embodiments, the reinforcing plate 400 is provided with a wire passing opening 410 , and the wire passing opening 410 is used to pass cables to save wiring space.

[0049] A method for manufacturing a horizontal frame comprises the following steps:

[0050] Prepare, prepare 510L steel plate;

[0051] Processing: the 510L steel plate is cut by laser to form a first connecting plate 100, a supporting plate 300 and a second connecting plate 200;

[0052] Cut holes: Use laser to cut connection holes 520 at corresponding positions of the first connection plate 100 and the second connection plate 200; cut installation positioning holes 311 and plug holes 312 on the support plate 300;

[0053] Bending: bending the first connecting plate 100 along the bending line between the first connecting plate 100 and the supporting plate 300, so that the first connecting plate 100 is perpendicular to the supporting plate 300; bending the second connecting plate 200 along the bending line between the second connecting plate 200 and the supporting plate 300, so that the second connecting plate 200 is perpendicular to the supporting plate 300;

[0054] To make a reinforcing plate, the 510L steel plate is cut by laser to form a reinforcing plate 400, and the pins 420 and the wire openings 410 of the reinforcing plate 400 are cut out at the same time;

[0055] Welding: insert the pins 420 of the reinforcing plate 400 into the insertion holes 312, and weld the reinforcing plate 400 to the cross frame by carbon dioxide shielded welding.

[0056] The integrity of the cross frame is ensured by the bending process, that is, the structural strength and rigidity of the cross frame can be maintained. The laser cutting method is used to conveniently and quickly process the installation positioning holes 311 and the plug holes 312. At the same time, the reinforcing plate 400 is also formed by laser cutting, which is suitable for mass production and improves efficiency.

[0057] In some embodiments, during the welding step, the height of the weld between the reinforcing plate 400 and the first connecting plate 100 or the second connecting plate 200 is 5 mm, the weld is a V-shaped groove, the length of the weld is 30 mm, and it is far away from the bending side of the cross frame to avoid thermal deformation and damage to the strength of the cross frame. It can be understood that the weld is a V-shaped groove, which is easy to process, and the welding is single-sided welding, without turning the workpiece, saving time and improving efficiency.

[0058] In some embodiments, the ratio of the width of the first connecting plate 100 or the width of the second connecting plate 200 to the width of the support plate 300 is controlled at 1:3 to avoid bending deformation caused by the width of the first connecting plate 100 or the width of the second connecting plate 200 being too wide. It can be understood that the width of the first connecting plate 100 or the width of the second connecting plate 200 refers to the width of the two in the front-to-back direction, and the width of the support plate 300 refers to the width of the support plate 300 in the vertical direction.

[0059] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A cross frame for connecting a vehicle frame, characterized in that: include: A first connecting plate (100) used for connecting the upper end of the vehicle frame; A second connecting plate (200) used for connecting the lower end of the vehicle frame; a support plate (300) connected between the first connection plate (100) and the second connection plate (200), wherein the first connection plate (100), the support plate (300) and the second connection plate (200) form a U-shape or an I-shape; a reinforcing plate (400), wherein the upper end of the reinforcing plate (400) and the lower end of the reinforcing plate (400) are connected between the first connecting plate (100) and the second connecting plate (200), and the rear end of the reinforcing plate (400) is connected to the supporting plate (300); The first connecting plate (100) and the second connecting plate (200) are both provided with connecting ends (500), the connecting ends (500) are provided with arc structures (510), the connecting ends (500) of the first connecting plate (100) and the connecting ends (500) of the second connecting plate (200) are both protruding forward to form an arch structure, the supporting plate (300) comprises a vertical portion (310) and an inclined portion (320) which are sequentially distributed from top to bottom, the inclined portion (320) is inclined downward from back to front, the vertical portion (310) is provided with a plug hole (312), and the rear end of the reinforcing plate (400) is provided with a plug pin (420) for connecting to the plug hole.

2. A horizontal frame according to claim 1, characterized in that: The connection end (500) is provided with a plurality of connection holes (520) arranged and distributed.

3. A horizontal frame according to claim 2, characterized in that: The vertical portion (310) is provided with a positioning installation hole (311).

4. A method for manufacturing a horizontal frame, characterized in that: Manufacturing the cross frame of claim 3 comprises the following steps: Prepare, prepare 510L steel plate; Processing: cutting the 510L steel plate by laser to form a first connecting plate (100), a supporting plate (300) and a second connecting plate (200); Cutting holes: using a laser to cut connecting holes (520) at corresponding positions of the first connecting plate (100) and the second connecting plate (200); and cutting mounting positioning holes (311) and plug holes (312) on the supporting plate (300); Bending: bending the first connecting plate (100) along a bending line between the first connecting plate (100) and the supporting plate (300) so that the first connecting plate (100) is perpendicular to the supporting plate (300); bending the second connecting plate (200) along a bending line between the second connecting plate (200) and the supporting plate (300) so that the second connecting plate (200) is perpendicular to the supporting plate (300); Making a reinforcing plate: cutting a 510L steel plate by laser to form a reinforcing plate (400), and simultaneously cutting out the pins (420) and the wire openings (410) of the reinforcing plate (400); Welding: insert the pin (420) of the reinforcing plate (400) into the insertion hole (312), and weld the reinforcing plate (400) to the cross frame by carbon dioxide shielded welding.

5. The method for manufacturing a horizontal frame according to claim 4, characterized in that: In the welding step, the height of the weld between the reinforcing plate (400) and the first connecting plate (100) or the second connecting plate (200) is 5 mm, the weld is a V-shaped groove, the length of the weld is 30 mm, and the weld is away from the bending side of the cross frame to avoid thermal deformation that may damage the strength of the cross frame.

6. The method for manufacturing a horizontal frame according to claim 5, characterized in that: The ratio of the width of the first connecting plate (100) or the width of the second connecting plate (200) to the width of the support plate (300) is 1:3, so as to avoid bending deformation caused by the width of the first connecting plate (100) or the width of the second connecting plate (200) being too wide.

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