Frame structure of die-casting connector for variable cross-section aluminum alloy frame

Abstract

The utility model relates to the technical field of vehicle frames, in particular to a vehicle frame structure of a die-casting connector for a variable cross-section aluminum alloy vehicle frame. The connector structure comprises a connector structure body, a middle cross beam, a frame front longitudinal beam, a frame rear longitudinal beam and a connecting structure which are integrally formed in a die-casting mode, a transverse mounting groove and a longitudinal mounting groove perpendicular to the transverse mounting groove are transversely formed in the connector structure body, and the longitudinal mounting groove and the transverse mounting groove are combined to form a T-shaped structure groove with openings in three directions. The frame front longitudinal beam, the frame rear longitudinal beam and the connecting mechanism are all arranged in the transverse mounting groove, and the connector structure main body is embedded into the transverse mounting groove and is flush with the upper surfaces of the frame front longitudinal beam, the frame rear longitudinal beam and the middle cross beam. The aluminum alloy frame has the advantages that the aluminum alloy frame can be applied to a new energy logistics vehicle by designing the integrated die-casting connector, the connecting structure and the frame, and a frame part structure with a relatively regular section can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of frame, especially relates to a frame structure of die casting joint for variable cross section aluminum alloy frame. BACKGROUND

[0002] From lightweight, energy saving and emission reduction and reduce the comprehensive cost performance, aluminum alloy is the first choice material of present stage automobile lightweight, and the automobile parts such as body, engine and wheel have matured and applied aluminum alloy material in large quantities, with the continuous research, optimization and innovation of aluminum alloy frame design and process, aluminum alloy frame will become the development trend.

[0003] Frame is the important assembly component of automobile, bears the weight from body, chassis, loading, and impact, distortion and inertial force in running, and enough strength and rigidity are the key of vehicle to bear internal and external load.

[0004] Considering the stress condition of frame, however, the prior art cannot realize the integrated connection of different size section longitudinal beam of frame, the strength is not enough, and the bending and torsional stiffness requirement of frame assembly cannot be met.

[0005] Therefore, it is necessary to design a frame structure of die casting joint for variable cross section aluminum alloy frame to solve the above problems. INVENTION CONTENTS

[0006] The utility model discloses a frame structure of die casting joint for variable cross section aluminum alloy frame to overcome the above insufficient of prior art.

[0007] In order to realize the above purpose, the utility model adopts the following technical scheme:

[0008] A frame structure of die casting joint for variable cross section aluminum alloy frame, it includes integrated die casting forming's joint structure main part, middle crossbeam, frame front longitudinal beam, rear longitudinal beam, connecting structure, its characterized in that: the joint structure main part is transversely provided with transverse installation groove, the longitudinal installation groove that is perpendicular to transverse installation groove is arranged, and the longitudinal installation groove and the transverse installation groove combination is T-shaped structure groove three-way opening, the longitudinal installation groove is arranged in the center position of the transverse installation groove, the middle crossbeam is arranged in the longitudinal installation groove, the frame front longitudinal beam, rear longitudinal beam and connecting mechanism are all arranged in the transverse installation groove, and the upper surface of joint structure main part, frame front longitudinal beam, rear longitudinal beam and middle crossbeam are arranged after embedding installation and being flat; through bolt and convex welding nut, rivet nut connection, realize the integrated connection of die casting joint and frame.

[0009] Preferably, a convex plane is arranged at the inner end of the transverse mounting groove, and a circular hole is arranged at the top in the height direction, the lower part of the joint structure body is in a triangular structure, and a mounting shaft hole is arranged at the position for matching mounting, the hole in the outer side of the die casting joint provides mounting for the cargo box floor support casting, and the position corresponds to the inner convex platform, and a plurality of groups of process grooves are arranged on the joint structure body.

[0010] Preferably, the connecting structure is formed in a U-shaped section by a steel plate stamping process, the two sides of the U-shaped plate are inwardly welded to integrate convex welding nuts, rivet hole positions are reserved at the two ends, and the connecting structure is then built-in the upper cavity of the front longitudinal beam and the rear longitudinal beam profile, the outer surface of the U-shaped plate is tightly matched with the inner three surfaces of the upper cavity of the front longitudinal beam and the rear longitudinal beam profile at the two sides, and the connecting structure is fixed by symmetrical rivet installation, so that the integrated connection between the connecting structure and the front longitudinal beam and the rear longitudinal beam is realized.

[0011] Preferably, the front longitudinal beam and the middle cross beam of the frame are of the same profile section size and are both of a multi-cavity structure, and a horizontal rib is arranged on the lower surface of the profile cavity in the extrusion direction.

[0012] Preferably, the triangular outer shape of the tail joint structure body of the front longitudinal beam of the frame is cut into a triangular bevel in the direction of the bevel, and is milled into an L-shaped step in the direction of the middle cross beam.

[0013] Preferably, the rear longitudinal beam profile of the frame is of a day-shaped section, the upper cavity is of the same section size as the upper cavity of the front longitudinal beam, and a circular hole is arranged at the top in the height direction.

[0014] The beneficial effects of the utility model are as follows: the technical scheme can be applied to an aluminum alloy frame of a new energy logistics vehicle, can realize the structure of a relatively regular section frame component, can realize the integrated connection of different size section longitudinal beams of the frame, can guarantee the joint connection strength, can meet the bending and torsional stiffness requirements of the frame assembly, and can be applied to a full aluminum frame assembly of different load requirements and different size sections. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 FIG. 1 is a structural schematic view of a frame structure of a die casting joint for a variable section aluminum alloy frame of the utility model;

[0016] Fig. 2 FIG. 3 is a profile sectional view of a front longitudinal beam and a middle cross beam profile of a frame structure of a die casting joint for a variable section aluminum alloy frame of the utility model;

[0017] Fig. 3 FIG. 4 is a profile sectional view of a rear longitudinal beam profile of a frame structure of a die casting joint for a variable section aluminum alloy frame of the utility model;

[0018] Fig. 4The utility model discloses a variable cross section aluminum alloy frame for die casting joint's frame structure's joint structure main body structure schematic diagram,

[0019] In the drawing: 1, joint structure main body; 4, middle cross beam; 2, frame front longitudinal beam; 3, rear longitudinal beam; 7, connecting structure; 11, transverse mounting groove; 12, longitudinal mounting groove; 9, convex plane; 5, projection welding nut; 6, rivet nut; 8, upper cavity; 10, horizontal rib. PREFERRED EMBODIMENT

[0020] Reference Figs. 1 to 4 A variable cross section aluminum alloy frame for die casting joint's frame structure, it includes integrated die casting forming's joint structure main body 1, middle cross beam 4, frame front longitudinal beam 2, rear longitudinal beam 3, connecting structure 7;

[0021] The joint structure main body 1 is provided with transverse mounting groove 11 on the transverse, and longitudinal mounting groove 12 is arranged perpendicularly to the transverse mounting groove, and the longitudinal mounting groove and the transverse mounting groove are combined to form T-shaped structure groove three-way opening, and the longitudinal mounting groove is arranged at the center position of the transverse mounting groove;

[0022] A convex plane 9 is arranged at one end of the groove of the transverse mounting groove, and a circular hole is arranged at the top in the height direction, and the convex plane is matched with the outer surface of the frame profile and is installed;

[0023] The lower part of the joint structure main body 1 is in triangular structure, and the mounting shaft hole 13 is arranged at the position for cooperation and installation, so as to provide the mounting position for the front lug of the rear plate spring;

[0024] The outer side of the die casting joint 1 is provided with a hole for installing the support casting of the cargo box floor, and the position corresponds to the inner boss plane, and a plurality of process grooves are arranged on the joint structure main body in order to reduce the weight of the overall structure;

[0025] The middle cross beam 4 is arranged in the longitudinal mounting groove, the frame front longitudinal beam 2, the rear longitudinal beam 3 and the connecting mechanism 7 are arranged in the transverse mounting groove, and the embedded installation joint structure main body 1, the frame front longitudinal beam, the rear longitudinal beam and the upper surface of the middle cross beam are arranged in the same plane, and the die casting joint and the frame are connected by bolts, projection welding nuts 5 and rivet nuts 6.

[0026] The connecting structure 7 is formed by a steel plate stamping process and has a U-shaped cross section, the two sides of the connecting structure 7 are inwardly welded to integrate the projection welding nuts 5, the rivet hole positions are reserved at both ends, and the connecting structure 7 is arranged in the upper cavity 8 of the frame front longitudinal beam 2 and the rear longitudinal beam 3 profile, the outer surface of the U-shaped plate is tightly matched with the three inner surfaces of the upper cavity of the frame front longitudinal beam 2 and the rear longitudinal beam 3 profile on both sides, and the connecting structure is fixed by symmetrically installing the rivets, so as to realize the integrated connection of the connecting structure and the frame front longitudinal beam and the rear longitudinal beam;

[0027] The profile section size of the front longitudinal beam 2 and the middle cross beam is same, and both are multi-cavity structures, and the lower surface in the profile cavity is provided with a cross rib 10 in the extrusion direction to enhance the bending resistance.

[0028] The triangular outer shape bevel of the tail joint structure body 1 of the front longitudinal beam 2 is cut into a triangular bevel, and an L-shaped step is formed by milling in the direction of the middle cross beam 4, the rear longitudinal beam 3 is vertically placed on the L-shaped step, and the upper surface and the two side surfaces of the front longitudinal beam 2 and the rear longitudinal beam 3 are leveled.

[0029] The rear longitudinal beam 3 adopts a day-shaped section, the upper cavity is consistent with the section size of the upper cavity of the front longitudinal beam 2, and a circular hole is formed at the top in the height direction to ensure the penetration of the U-shaped connecting structure 7 and the bolt installation.

[0030] The die-casting joint 1 and the connecting structure 7 realize the integration of the front longitudinal beam 2, the rear longitudinal beam 3 and the middle cross beam 4 with different section sizes, and can be further applied to the full-aluminum frame assembly with different loads and different sizes; the integrated die-casting joint, the connecting structure and the frame have the advantages of simple structure principle, easy processing and manufacturing, all cold connection process, no loss of material performance, less assembly time, high production efficiency and low development cost; the integrated die-casting joint structure can be further applied to the full-aluminum frame assembly with different load requirements and different size sections, and has obvious advantages of universality and reference.

[0031] The utility model discloses the beneficial part, and the technical scheme can be applied to the aluminum alloy frame of new energy logistics vehicle, can realize the relative rule section frame spare structure, can realize the integrated connection of the different size section longitudinal beam of frame, can guarantee the joint connecting strength, can satisfy the frame assembly bending torsional rigidity requirement, can expand application to the full-aluminum frame assembly with different load requirements and different size sections.

[0032] The above is only the preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, and all should be covered in the protection scope of the utility model.

Claims

1. A frame structure for a die-cast joint of a variable cross-section aluminum alloy frame, comprising an integrally die-cast joint structure body, a middle crossbeam, a front longitudinal beam, a rear longitudinal beam, and a connecting structure, characterized in that: The main body of the connector structure has a transverse mounting groove and a longitudinal mounting groove perpendicular to the transverse mounting groove. The longitudinal mounting groove and the transverse mounting groove are combined to form a T-shaped three-way opening. The longitudinal mounting groove is located at the center of the transverse mounting groove. The middle crossbeam is placed in the longitudinal mounting groove. The front longitudinal beam, rear longitudinal beam, and connecting mechanism of the frame are all placed in the transverse mounting groove. After being embedded and installed, the main body of the connector structure is arranged flush with the upper surfaces of the front longitudinal beam, rear longitudinal beam, and middle crossbeam of the frame. The die-cast connector is integrated with the frame by bolts, projection weld nuts, and rivet nuts.

2. The frame structure of a die-cast joint for a variable cross-section aluminum alloy frame according to claim 1, characterized in that: A protruding plane is provided at one end of the horizontal mounting groove, and a row of round holes is opened at the top along the height direction. The lower part of the main body of the joint structure is triangular, and a mounting shaft hole is provided at its position for matching installation. The opening on the outer side of the die-cast joint provides installation for the cargo box floor support casting, and the position corresponds to the internal boss plane. Several sets of process grooves are opened on the main body of the joint structure.

3. The frame structure of a die-cast joint for a variable cross-section aluminum alloy frame according to claim 1, characterized in that: The connecting structure is formed into a U-shaped cross section by steel plate stamping process. The two sides of the plate are turned inward and welded with integrated projection weld nuts. The two ends are reserved with rivet holes. It is then built into the upper cavity of the front and rear longitudinal beams of the frame. The outer surface of the U-shaped plate is tightly fitted with the upper cavity of the front and rear longitudinal beams of the frame on three sides. It is fixed by symmetrical installation with rivets to realize the integrated connection between the connecting structure and the front and rear longitudinal beams of the frame.

4. The frame structure of a die-cast joint for a variable cross-section aluminum alloy frame according to claim 1, characterized in that: The front longitudinal beam and the middle cross beam of the frame have the same profile cross-sectional dimensions and are both multi-cavity structures, with transverse ribs provided on the lower surface of the profile cavities along the extrusion direction.

5. The frame structure of a die-cast joint for a variable cross-section aluminum alloy frame according to claim 1, characterized in that: The main body of the front longitudinal beam rear joint structure of the vehicle frame is cut into a triangular bevel along the direction of the bevel, and then milled off along the direction of the middle crossbeam to form an L-shaped step.

6. The frame structure of a die-cast joint for a variable cross-section aluminum alloy frame according to claim 1, characterized in that: The rear longitudinal beam profile of the frame adopts a H-shaped cross section, and the upper cavity has the same cross-sectional dimensions as the upper cavity of the front longitudinal beam, with a round hole at the top along the height direction.

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