CN217623763U - Micro truck frame - Google Patents

Abstract

The utility model discloses a little card frame, including first longeron, second longeron, first crossbeam, second crossbeam, third crossbeam, fourth crossbeam, fifth crossbeam, sixth crossbeam, seventh crossbeam, eighth crossbeam and ninth crossbeam are located first longeron with just be connected with first longeron and second longeron between the second longeron, set up ulcerate shrinkage cavity and preceding traveller tower package mounting hole on first longeron and the second longeron. The utility model discloses a little truck frame sets up collision energy-absorbing structure through the frame front portion and reaches and satisfy little load bulletin collision law, and the scalability of independent overhang pattern type is realized through the fore-stock traveller tower package mounting hole, reaches the design target that has both satisfied the rigidity intensity requirement and satisfied the lightweight requirement through the rational arrangement of variable cross section longeron and groove type roof beam, tubular beams and collocation.

Description

Micro truck frame

Technical Field

The utility model belongs to the technical field of cargo vehicle, specifically speaking, the utility model relates to a little truck frame.

Background

The independent frame is used as important bearing base body of automobile, and is used for various automobile models to support all the parts related to sprung mass, such as engine clutch, speed variator, steering gear, non-bearing body and cargo box, etc. and to bear various forces and moments transmitted to it. For this purpose, the frame should have sufficient bending stiffness to maintain the relative position between the relevant mechanisms mounted thereon during the travel of the vehicle and to minimize deformation of the vehicle body; the frame should also have sufficient strength to ensure sufficient reliability and life, and the main parts such as the longitudinal beam should not be seriously deformed and cracked during the service life. Insufficient rigidity of the frame causes vibration and noise, and also degrades the riding comfort, the handling stability and the reliability of some parts of the automobile. The vehicle frame has complex stress conditions and various structural forms, so that the vehicle frame products on the market are various in variety, but none of the vehicle frame can well solve the problems of compatibility of different powers, meeting collision regulations under small-load bulletin, expanding independent front suspension type, considering both the rigidity and strength requirements and light weight and the like.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a little truck frame, the purpose is to improve the functionality.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the micro truck frame comprises a first longitudinal beam, a second longitudinal beam, a first cross beam, a second cross beam, a third cross beam, a fourth cross beam, a fifth cross beam, a sixth cross beam, a seventh cross beam, an eighth cross beam and a ninth cross beam, wherein the first cross beam, the second cross beam, the third cross beam, the fourth cross beam, the fifth cross beam, the sixth cross beam, the seventh cross beam, the eighth cross beam and the ninth cross beam are positioned between the first longitudinal beam and the second longitudinal beam and connected with the first longitudinal beam and the second longitudinal beam, the first cross beam, the second cross beam, the third cross beam, the fourth cross beam, the fifth cross beam, the sixth cross beam, the seventh cross beam, the eighth cross beam and the ninth cross beam are sequentially arranged along the length direction of the first longitudinal beam and the second longitudinal beam, and collapse holes and front sliding column tower package mounting holes are formed in the first longitudinal beam and the second longitudinal beam.

And front leaf spring front mounting seats are arranged at the front ends of the first longitudinal beam and the second longitudinal beam.

The first cross beam is a groove-shaped beam, and ventilation lightening holes are formed in the first cross beam.

The second cross beam is a round tubular beam, and two ends of the second cross beam are connected with the first longitudinal beam and the second longitudinal beam through C-shaped connecting plates.

The third cross beam is a circular tube beam, and two ends of the third cross beam are connected with the first longitudinal beam and the second longitudinal beam through C-shaped connecting plates.

The fourth cross beam is a groove-shaped beam, and lightening holes are formed in the fourth cross beam.

The fifth cross beam is a round tubular beam, two ends of the fifth cross beam are connected with the first longitudinal beam and the second longitudinal beam through 'n' -shaped supports, and a transmission shaft mounting support is arranged on the fifth cross beam.

The sixth cross beam is a groove-shaped beam, and a lightening hole is formed in the sixth cross beam.

The seventh cross beam is a groove-shaped beam, and a lightening hole is formed in the seventh cross beam.

The eighth cross beam is a round tubular beam, and two ends of the eighth cross beam are connected with the first longitudinal beam and the second longitudinal beam through C-shaped connecting plates.

The utility model discloses a little truck frame sets up collision energy-absorbing structure through the frame front portion and reaches and satisfy little load and announce collision law, and the scalability of suspension type before independent is realized through the fore-stock strut tower package mounting hole, reaches the design target that both satisfied the rigidity intensity requirement and satisfied the lightweight requirement through the rational arrangement and the collocation of variable cross section longeron and groove type roof beam, tubular beams.

Drawings

Fig. 1 is a schematic structural view of the micro truck frame of the present invention;

FIG. 2 is a schematic structural view of a first stringer;

FIG. 3 is a schematic structural view of a second stringer;

FIG. 4 is a schematic structural view of the first cross member;

FIG. 5 is a schematic structural view of a second beam;

FIG. 6 is a schematic structural view of a third cross member;

FIG. 7 is a schematic structural view of a fourth beam;

FIG. 8 is a schematic structural view of a fifth cross member;

FIG. 9 is a schematic structural view of a sixth cross member;

FIG. 10 is a schematic structural view of a seventh cross member;

FIG. 11 is a structural view of an eighth beam;

FIG. 12 is a schematic structural view of a ninth beam;

fig. 13 is a schematic view of the arrangement of collapsing holes;

FIG. 14 is a schematic layout of front strut tower pack mounting holes;

the labels in the above figures are: 1. a first stringer; 2. a second stringer; 3. a first cross member; 4. a second cross member; 5. a third cross member; 6. a fourth cross member; 7. a fifth cross member; 8. a sixth cross member; 9. a seventh cross member; 10. an eighth cross member; 11. a ninth cross member; 12. collapsing the hole; 13. preceding strut tower package mounting hole.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings, for the purpose of helping those skilled in the art to understand more completely, accurately and deeply the conception and technical solution of the present invention, and to facilitate its implementation.

As shown in fig. 1, the utility model provides a micro truck frame, including first longeron 1, second longeron 2, first crossbeam 3, second crossbeam 4, third crossbeam 5, fourth crossbeam 6, fifth crossbeam 7, sixth crossbeam 8, seventh crossbeam 9, eighth crossbeam 10 and ninth crossbeam 11 are located first longeron 1 with be connected between the second longeron 2 and with first longeron 1 and second longeron 2, first crossbeam 3, second crossbeam 4, third crossbeam 5, fourth crossbeam 6, fifth crossbeam 7, sixth crossbeam 8, seventh crossbeam 9, eighth crossbeam 10 and ninth crossbeam 11 are arranged in proper order for following the length direction of first longeron 1 and second longeron 2. The first longitudinal beam 1 and the second longitudinal beam 2 are oppositely arranged, the length directions of the first longitudinal beam 1 and the second longitudinal beam 2 are parallel, and the first longitudinal beam 1 and the second longitudinal beam 2 are provided with collapse holes 12 and front sliding column tower package mounting holes 13.

Specifically, as shown in fig. 1 and 2, the first side member 1 is formed in a groove shape, and opens toward the inside of the vehicle frame, and the foremost end of the first side member 1 is fitted with a front leaf spring front mount, providing a front leaf spring front mount point. The front section of the first longitudinal beam 1 is 85mm, 50mm, and 4mm, and the rear section of the first longitudinal beam 1 is 138mm, 50mm, and 4mm.

As shown in fig. 1 and 3, the second side member 2 has a channel shape with an opening facing the inside of the frame, and the foremost end of the second side member 2 is fitted with a front leaf spring front mounting seat providing a front leaf spring front mounting point. The front section of the second longitudinal beam 2 is 85mm, 50mm, and 4mm, and the rear section of the second longitudinal beam 2 is 138mm, 50mm, and 4mm. The tail part of the second longitudinal beam 2 is of an equal straight beam structure, and the plate spring adopts an external mode.

As shown in fig. 1 and 4, the first beam 3 is a channel beam, and the cross-sectional dimension of the first beam 3 is 77mm × 70mm × 2mm. A row of ventilation lightening holes are formed in the middle of the first cross beam 3, and five fixing points are respectively arranged at two ends of the first cross beam 3 and connected with the upper wing surface and the lower wing surface of the longitudinal beam. The right side of the first beam 3 is welded with an internal thread sleeve part of the front trailer hook.

As shown in fig. 1 and 5, the second beam 4 is a circular tubular beam, and the cross-sectional dimension of the second beam 4 is phi 50 x 2. The two ends of the second cross beam 4 are connected with the first longitudinal beam 1 and the second longitudinal beam 2 through C-shaped connecting plates, and the cross section size is 77mm 38mm 3mm. The circular tubular beam penetrates through the C-shaped connecting plate and the longitudinal beam. The C-shaped connecting plate and the longitudinal beam are connected into a whole to form an internal and external buckling structure.

As shown in fig. 1 and 6, the third cross beam 5 is a circular tubular beam, the cross-sectional dimension of the third cross beam 5 is phi 50 x 2.5, two ends of the third cross beam 5 are connected with the first longitudinal beam 1 and the second longitudinal beam 2 by using a "C" shaped connecting plate, and the cross section of the connecting plate is a variable cross section because the "C" shaped plate is located in a transition region of variable cross sections of the longitudinal beams. The circular tubular beam penetrates through the C-shaped connecting plate and the longitudinal beam. The C-shaped connecting plate and the longitudinal beam are connected into a whole to form an internal and external buckling structure.

As shown in fig. 1 and 7, the fourth beam 6 is a channel beam, and the cross-sectional dimension of the fourth beam 6 is 124mm × 80mm × 3mm. A group of gearbox support mounting holes are reserved in the middle of the fourth cross beam 6, and lightening holes are formed in the two sides of the fourth cross beam. Two split connecting brackets are respectively arranged at two ends of the cross beam and are connected with the longitudinal beam through the connecting brackets. The connecting bracket here is also a reinforcing bracket for the widened region of the longitudinal beam.

As shown in fig. 1 and 8, the fifth cross beam 7 is a circular tube beam with a cross-sectional dimension of phi 40 x 2.5, two ends of the fifth cross beam 7 are connected with the first longitudinal beam 1 and the second longitudinal beam 2 by a support shaped like a Chinese character ji, the circular tube cross beam and the support shaped like a Chinese character ji are welded into a whole, and then the support is riveted on the longitudinal beam through two riveting points. A transmission shaft mounting bracket is welded on the fifth cross beam 7 and used for mounting and fixing the transmission shaft.

As shown in fig. 1 and 9, the sixth beam 8 is a channel beam, and the cross-sectional dimension of the sixth beam 8 is 124mm × 80mm × 3mm. The ventral surface of the sixth cross beam 8 is provided with a row of lightening holes. The lower side surface of the sixth cross beam 8 is welded with a fixed bracket of a hand braking pull wire. And two ends of the sixth cross beam 8 are respectively provided with a connecting bracket which is connected with the longitudinal beam through the connecting bracket. The sixth cross beam 8 is connected with the support and the longitudinal beam through riveting points.

As shown in fig. 1 and 10, the seventh beam 9 is a channel beam having a cross-sectional dimension of 40mm × 11mm × 3mm. The seventh cross beam 9 is mainly used for assisting in mounting of the spare tire, the ventral surface of the seventh cross beam 9 is directly attached to the lower wing surfaces of the first longitudinal beam 1 and the second longitudinal beam 2, the ventral surface of the seventh cross beam 9 is provided with a row of lightening holes, and two ends of the seventh cross beam 9 are connected with the longitudinal beams through riveting points respectively.

As shown in fig. 1 and 11, the eighth beam 10 is a circular tubular beam, and the cross-sectional dimension of the eighth beam 10 is phi 60 x 3. The both ends of eighth crossbeam 10 and first longeron 1 and second longeron 2 adopt "C" type connecting plate to be connected, and cross sectional dimension is 130mm 41mm 3mm. The circular tubular beam penetrates through the C-shaped connecting plate and the longitudinal beam. The C-shaped connecting plate and the longitudinal beam are connected into a whole to form an internal and external buckling structure. Rear plate spring rear lifting lug supports are welded at the left end and the right end of the eighth cross beam 10 and are used for connecting plate springs.

As shown in fig. 1 and 12, the ninth cross member 11 is also a frame tail member, and the ninth cross member 11 is also mainly used for mounting a rear tow hook and mounting a rear license plate. The ninth crossbeam 11 is "C" type in cross-section, and the cross-sectional dimension is 130mm 35mm 3mm, has opened a row of lightening holes on the main cross-section of ninth crossbeam 11.

As shown in fig. 1, the lengths of the first cross beam 3, the second cross beam 4 and the third cross beam 5 are greater than the lengths of the fourth cross beam 6, the fifth cross beam 7, the sixth cross beam 8, the seventh cross beam 9, the eighth cross beam 10 and the ninth cross beam 11, the distances between the longitudinal beams on the left side and the right side of the fourth cross beam 6 are unequal, the distance between the two longitudinal beams on the left side of the fourth cross beam 6, namely the front section of the whole vehicle, is increased by 70mm, and thus the layout, installation and protection of all power assemblies in platform planning are met.

As shown in fig. 1 and 13, the first longitudinal beam 1 is provided with a plurality of collapsing holes 12, the collapsing holes 12 are long round holes vertically arranged on the ventral surface of the first longitudinal beam 1, all the collapsing holes are sequentially arranged along the length direction of the first longitudinal beam 1, and the collapsing holes are located between the first transverse beam 3 and the second transverse beam 4. The second longitudinal beam 2 is provided with collapse holes 12, the collapse holes 12 are long round holes vertically arranged on the ventral surface of the second longitudinal beam 2, the expansion holes are multiple, all the expansion holes are sequentially arranged along the length direction of the second longitudinal beam 2, and the expansion holes are positioned between the first cross beam 3 and the second cross beam 4. The expansion holes on the first longitudinal beam 1 and the second longitudinal beam 2 are symmetrically arranged, and the collapse holes 12 can play a good energy absorption role when the whole vehicle is collided, so that the injury to the people in the cab is reduced. Especially when the whole vehicle reports a small load notice, the requirement of a collision law is a mandatory item, and the crumple energy absorption design greatly contributes to passing a collision test.

As shown in fig. 1 and 14, a front strut tower package mounting hole 13 is formed in the first longitudinal beam 1, the front suspension is connected to the first longitudinal beam 1 at the front strut tower package mounting hole 13, and the front strut tower package mounting hole 13 is located at a position on the first longitudinal beam 1, which is connected to the second cross beam 4, so that free switching of the front suspension when a macpherson suspension is adopted is facilitated. Also set up preceding traveller tower package mounting hole 13 on the second longeron 2, the front suspension is connected with second longeron 2 in preceding traveller tower package mounting hole 13 department, and preceding traveller tower package mounting hole 13 is located the position department of being connected with second crossbeam 4 on the second longeron 2, and the freedom when being convenient for the front suspension adopts the McPherson suspension switches.

In order to improve the bending rigidity and the torsional rigidity of the frame assembly, the more reasonable matching and distribution design is made on the type selection of the cross beam, and the connecting plate is specially designed and optimized at the connecting part of the longitudinal beam and the cross beam, so that the bending and torsion resistance of the longitudinal beam and the whole frame is greatly improved. After the optimized design, the bending rigidity of the frame reaches more than 1150N/mm and the torsional rigidity reaches 235Nm/°byCAE theory analysis.

In addition, the weight reduction design is well embodied on the frame scheme, and the longitudinal beams, the cross beams, the connecting plates and the auxiliary supports are all widely optimized in weight reduction in different types. After optimization, the theoretical weight 134KG of the frame and the weight index per unit length (light weight) are ranked in front of the middle rank of the mini-truck type frame.

The micro truck frame with the structure has the advantages of simple structure, reasonable and compact spatial arrangement, convenience in manufacturing, easiness in implementation, various functions, superior part performance, low weight and low cost, and has very high practical value. The frame for the micro truck fully considers the planning and arrangement compatibility of different power assemblies in a platform by increasing the front width, meets the small load announcement collision rule by arranging a collision energy absorption structure at the front part of the frame, realizes the expandability of an independent front suspension type by reserving a front sliding column tower bag mounting hole 13, and achieves the design goals of meeting the requirements of rigidity and light weight by reasonable arrangement and matching of a variable cross-section longitudinal beam, a channel beam and a tubular beam.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without modification to the method and technical solution of the present invention, or the present invention can be directly applied to other occasions without modification, all within the scope of the present invention.

Claims (2)

1. Little truck frame, including first longeron and second longeron, its characterized in that: the first cross beam, the second cross beam, the third cross beam, the fourth cross beam, the fifth cross beam, the sixth cross beam, the seventh cross beam, the eighth cross beam and the ninth cross beam are positioned between the first longitudinal beam and the second longitudinal beam and connected with the first longitudinal beam and the second longitudinal beam, the first cross beam, the second cross beam, the third cross beam, the fourth cross beam, the fifth cross beam, the sixth cross beam, the seventh cross beam, the eighth cross beam and the ninth cross beam are sequentially arranged along the length direction of the first longitudinal beam and the second longitudinal beam, and collapse holes and front sliding column tower package mounting holes are formed in the first longitudinal beam and the second longitudinal beam;

the first longitudinal beam is provided with a plurality of collapse holes which are long circular holes vertically arranged on the ventral surface of the first longitudinal beam, all the collapse holes are sequentially arranged along the length direction of the first longitudinal beam, and the collapse holes are positioned between the first cross beam and the second cross beam;

the second longitudinal beam is provided with a plurality of collapse holes which are long circular holes vertically arranged on the ventral surface of the second longitudinal beam, all the collapse holes are sequentially arranged along the length direction of the second longitudinal beam, and the collapse holes are positioned between the first cross beam and the second cross beam;

the collapse holes on the first longitudinal beam and the second longitudinal beam are symmetrically arranged, and the collapse holes are used for playing a good energy absorption role when the whole vehicle is collided;

the first cross beam is a groove-shaped beam, and ventilation lightening holes are formed in the first cross beam;

the second cross beam is a round tubular beam, and two ends of the second cross beam are connected with the first longitudinal beam and the second longitudinal beam through C-shaped connecting plates;

the third cross beam is a round pipe beam, and two ends of the third cross beam are connected with the first longitudinal beam and the second longitudinal beam through C-shaped connecting plates;

the fourth cross beam is a groove-shaped beam, and a lightening hole is formed in the fourth cross beam;

the fifth cross beam is a round pipe beam, two ends of the fifth cross beam are connected with the first longitudinal beam and the second longitudinal beam through a support in a shape like a Chinese character 'ji', and a transmission shaft mounting support is arranged on the fifth cross beam;

the sixth cross beam is a groove-shaped beam, and a lightening hole is formed in the sixth cross beam;

the seventh cross beam is a groove-shaped beam, and a lightening hole is formed in the seventh cross beam;

the eighth cross beam is a round tubular beam, and two ends of the eighth cross beam are connected with the first longitudinal beam and the second longitudinal beam through C-shaped connecting plates.

2. The microcard frame of claim 1, wherein: and front leaf spring front mounting seats are arranged at the front ends of the first longitudinal beam and the second longitudinal beam.

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