CN220948189U - Straight beam frame of trailer - Google Patents

Abstract

The utility model discloses a straight beam frame of a trailer, which solves the problem of uneven stress existing in the existing frame. The frame is an integrated structure formed by welding an upper wing plate, a lower wing plate and beam rib plates, and is characterized in that: the upper edge of the beam rib plate is an upper arch, the lower edge of the beam rib plate is a lower arch, the front end and the tail end of the beam rib plate are respectively provided with a thrust lug, and the front end and the rear end of the upper wing plate are respectively in butt fit with the two thrust lugs. When the full-load vehicle passes through the twisted and bumpy road surface, as the upper end face of the frame beam rib plate is designed into an arch shape, and the upper wing plate matched with the frame beam rib plate is of an upper arch structure, the stress direction of the frame is perpendicular to the upper wing plate of the frame and dispersedly extends towards the front end and the tail of the frame, when the stress of the frame is transmitted to the front end and the tail of the frame, the front end and the tail of the frame beam rib plate are provided with thrust lugs, the thrust lugs limit the excessive stress of the frame towards the two ends, and the problem of deformation of the position of the straight beam part of the trailer is prevented.

Description

Straight beam frame of trailer

Technical Field

The utility model relates to the technical field of semi-trailer frames, in particular to a straight beam frame of a trailer.

Background

The upper plane (upper wing plate of the frame) of the straight beam part of the semitrailer frame in the market at present is a plane, and the defect is that when a fully loaded vehicle passes through a distorted and bumpy road surface, the frame is under a specific bumpy frequency, the straight beam bearing part of the trailer body bears the gravity of cargoes and the distortion force of left and right torsion pendulum of the vehicle, when the upper plane (upper wing plate of the frame) of the frame is a plane, the direction of the plane force (upper wing plate of the frame) acts on the frame is vertical to a certain section of the frame, the gravity dispersedly extends towards the front end and the tail part of the frame less, in addition, the frame is easy to generate distortion deformation under the condition of receiving left and right distortion force, and the deformed frame causes uneven stress of the suspension part to cause damage of the part, thereby influencing the service life of the trailer.

Disclosure of utility model

In order to solve the defects in the prior art, the utility model provides a straight beam frame of a trailer, which solves the problem of uneven stress of the existing frame through structural optimization.

The technical scheme adopted for solving the technical problems is as follows:

The utility model provides a straight beam frame of trailer, this frame is by last pterygoid lamina, lower pterygoid lamina and beam rib board welded shaping's an organic whole structure, its characterized in that: the upper edge of the beam rib plate is an upper arch, the lower edge of the beam rib plate is a lower arch, the front end and the tail end of the beam rib plate are respectively provided with a thrust lug, and the front end and the rear end of the upper wing plate are respectively in butt fit with the two thrust lugs.

Further, the beam rib plate is provided with a lightening hole.

Further, a frame cross beam supporting and positioning hole is formed in the beam rib plate.

Further, the upper wing plate is a thick steel plate with equal width and equal thickness, and the thick steel plate is abutted with the upper edge of the beam rib plate along the central line and welded and fixed.

Further, the lower wing plate is of a variable diameter design.

Further, the variable diameter design means: the part with smaller bearing force of the lower wing plate is designed to be the narrowest surface, covers the front end and the tail end of the lower wing plate, and is mainly designed to widen the plane of the bearing suspension part.

Further, the central line of the lower wing plate is abutted with the lower edge of the beam rib plate and welded into a whole, and the central line and the lower edge of the beam rib plate meet a vertical assembly relationship.

Further, the lower wing plate is formed by combining a plurality of straight line segments and arc segments.

Further, the frame is configured on a straight beam vehicle type trailer and a high-low beam vehicle type trailer.

The beneficial effects of the utility model are as follows:

When a full-load vehicle passes through a twisted and bumpy road surface, the frame bears the gravity of vehicle body cargoes and the twisting force of left and right torsion of the vehicle at a specific bumpy frequency, and as the upper end face of the frame beam rib plate is designed to be arched and the matched upper wing plate is of an upper arch structure, the stress direction of the frame is perpendicular to the upper wing plate of the frame and dispersedly extends towards the front end and the tail of the frame, the arched frame rib plate shares the stress of the frame at a plurality of positions of the frame, when the stress of the frame conveys the front end and the tail of the frame, the front end and the tail end of the frame beam rib plate are provided with thrust lugs, the thrust lugs limit the excessive stress of the frame to the two ends, the problem of deformation of the position of the frame straight beam part of the trailer is prevented, and the service life of the trailer frame is greatly prolonged.

The design plane of the front end and the tail end of the lower wing plate of the frame is narrowed to reduce the preparation quality of the frame beam assembly, the suspension part of the main bearing of the lower wing plate of the frame is widened in plane design, and the suspension part of the main bearing is reinforced in design, so that the stress of the lower wing plate of the frame is shared, the deformation problem of the frame beam of the trailer is effectively prevented, and the service life of the frame of the trailer is greatly prolonged.

Drawings

Fig. 1 is an overall effect diagram of a straight beam frame of a trailer.

Fig. 2 is a partial structural view of the front end of the frame.

Fig. 3 is a partial structural view of the tail end of the frame.

Fig. 4 is a front view of a beam rib plate.

FIG. 5 is a graph of beam rib plate stress analysis.

Fig. 6 is a partial view of the front end of the beam rib plate.

Fig. 7 is a partial view of a middle section of a beam rib plate.

Fig. 8 is a partial view of the trailing end of a beam rib.

Fig. 9 is a development view of the lower wing plate.

In the figure:

The upper wing plate of the 10-degree wing plate,

20 Lower wing plate, 21 narrowest surface, 22 suspension part plane, 23 rest bearing part plane,

30 Liang Leban, 31 upper arch, 32 lower arch, 33 thrust lugs, 34 lightening holes, 35 support positioning holes.

Detailed Description

The straight beam frame of the trailer is composed of an upper wing plate 10, a lower wing plate 20 and a beam rib plate 30, wherein a frame is formed by welding the three parts, and is subjected to integral corrosion prevention treatment.

The present embodiment will be described in detail with reference to fig. 1 to 9 of the accompanying drawings. It is evident that the drawings in the following description are only some embodiments of the present utility model and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

The front and rear as set forth in this embodiment are defined in terms of the front and rear of the frame, i.e., the front-rear direction of the vehicle.

Liang Leban 30, the beam rib plate is optimally designed, and has the function of preventing the deformation of the straight beam frame of the trailer. Specifically, the beam rib plate 30 of the straight beam frame is entirely narrow at both ends and wide in the middle when seen from the side, and specifically, the middle of the beam rib plate has a large bearing, so that the part is designed to be wide. From the linear contour, the upper edge 31 of the beam rib plate is an upper arch, the lower edge is a lower arch 32, and the front end (i.e. the front end of the frame) and the tail end of the beam rib plate are respectively provided with a thrust lug 33, wherein the thrust lugs are thrust structures protruding upwards along the upper edge of the beam rib plate, the thrust lugs are used for limiting and positioning the front end and the rear end of the upper wing plate, namely the front end and the rear end of the upper wing plate are respectively in butt fit with the two thrust lugs, when the upper wing plate is stressed, the deformation of the upper wing plate can be effectively restrained by the existence of the thrust lugs, and the protection of a welding seam between the upper wing plate and the beam rib plate is further facilitated. This has positive significance for optimizing the overall stress performance of the frame.

Further, the beam rib plate is provided with a plurality of lightening holes 34, so that the dead weight of the frame can be reduced on the premise that the integral strength is not reduced basically.

Further, frame rail support locating holes 35 are provided in the beam cross plates for assembly with the frame rails.

The upper wing plate 10 is a thick steel plate with equal width, and the thick steel plate is abutted against the upper edge of the beam rib plate along the central line and welded and fixed, and it is easy to understand that the upper edge of the beam rib plate is arc-shaped, so the upper wing plate also forms an arc shape with an upward bulge. In this embodiment, the vertical relationship between the upper wing plate and the beam rib plate is referred to in fig. 2. And the front end and the rear end of the upper wing plate are respectively in butt fit with the thrust lugs at the front end and the rear end of the beam rib plate, and the front end and the rear end of the upper wing plate are limited through the thrust lugs. The advantage of this design is that, with reference to the mechanical analysis of fig. 5, it can be seen that under the action of the upper frame heavy load pressure F1 and the lower frame heavy load pressure F2, the upper wing plate and the beam rib plate are not only constrained by the welded joint, but also by the thrust lugs.

Further, the upper blade 10 is made of a steel plate having the same width and thickness.

Referring to fig. 9 and 1, the lower wing plate 20 is designed to have a variable diameter, that is, the lower wing plate is designed to have a plurality of variable diameter planes when seen from a low side, specifically, the variable diameter of the lower wing plate is designed according to the distribution of the stress of the bearing part of the lower wing plate, and the bearing part of the lower wing plate of the frame is designed to have the narrowest surface 21, including M1 and M4, covering the front end and the tail end of the lower wing plate. The main bearing suspension part plane 22 is designed to be widened and comprises M3, and the rest bearing part plane 23 is designed conventionally and is M2, refer to the figure. The design makes the design plane of the part with smaller bearing capacity at the front end and the tail end of the lower wing plate narrow, reduces the preparation quality of the frame beam assembly, widens the plane design of the suspension part mainly borne by the lower wing plate of the frame, and strengthens the suspension part mainly borne by the lower wing plate of the frame, thereby sharing the stress of the lower wing plate of the frame, effectively preventing the deformation of the frame beam of the trailer from occurring and greatly prolonging the service life of the frame of the trailer.

Further, the central line of the lower wing plate is abutted with the lower edge of the beam rib plate and welded into a whole, and the central line and the lower edge of the beam rib plate meet the vertical assembly relation.

Further, the lower wing plate is a continuous steel plate formed by combining a plurality of straight line segments and arc segments.

As an alternative embodiment, firstly, carrying out plane blanking according to the reducing surface schematic diagram of the lower wing plate in fig. 9, respectively welding the upper wing plate and the lower wing plate of the frame on the upper plane and the lower plane of the rib plate of the frame beam, positioning the upper wing plate and the lower wing plate of the frame according to the rib plate of the frame beam before welding, and welding the straight beam frame of the trailer after positioning correction.

The above examples are provided for illustrating the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and those skilled in the art should not depart from the spirit of the present utility model in all kinds of modifications and improvements that fall within the scope of the present utility model as defined in the appended claims.

Claims (8)

1. The utility model provides a straight beam frame of trailer, this frame is by last pterygoid lamina, lower pterygoid lamina and beam rib board welded shaping's an organic whole structure, its characterized in that: the upper edge of the beam rib plate is an upper arch, the lower edge of the beam rib plate is a lower arch, the front end and the tail end of the beam rib plate are respectively provided with a thrust lug, and the front end and the rear end of the upper wing plate are respectively in butt fit with the two thrust lugs.

2. The straight trailer rail frame of claim 1 wherein the rail ribs have lightening holes.

3. A straight trailer beam frame as claimed in claim 2, wherein the beam rib has frame cross member support locating holes provided therein.

4. The straight trailer rail frame of claim 1 wherein the upper wing plate is a constant width, constant thickness steel plate which is welded and secured along a midline in abutment with the upper edges of the rail ribs.

5. The straight trailer rail frame of claim 4 wherein the lower wing panel is of variable diameter design.

6. The straight trailer rail frame of claim 5 wherein the centerline of the lower wing panel is integrally welded to the lower edge of the beam rib plate in a vertically assembled relationship.

7. The straight trailer rail frame of claim 6 wherein the lower wing panel is formed from a combination of straight and arcuate sections.

8. The trailer straight beam frame of claim 7, wherein the frame is configured for a straight beam vehicle type trailer and a high and low beam vehicle type trailer.