CN210734392U

CN210734392U - A lightweight tricycle frame for four countries discharge

Info

Publication number: CN210734392U
Application number: CN201921763689.8U
Authority: CN
Inventors: 高林涛; 王栋良; 付少林
Original assignee: Luoyang Dazhi Motorcycle Co Ltd
Current assignee: Luoyang Dazhi Motorcycle Co Ltd
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2020-06-12
Anticipated expiration: 2029-10-21

Abstract

The utility model provides a lightweight tricycle frame for four rows of countries, includes integrative welded preceding automobile body frame and back cargo tank frame, preceding automobile body frame includes girder and a pair of lower boundary beam, and the cross section of lower boundary beam is the cell type structure, and is connected with a plurality of cell type between a pair of lower boundary beam and connects the stull. The rear cargo box frame is rectangular and comprises two groove-shaped cross beams and four groove-shaped longitudinal beams, wherein notches of the two groove-shaped cross beams are arranged oppositely, and two ends of the four groove-shaped longitudinal beams are welded with inner groove surfaces of the two groove-shaped cross beams correspondingly. Between two cell type crossbeams, run through four cell type longerons and weld two pipe crossbeams, the both ends of pipe crossbeam run through the welding with the leaf spring lug. The utility model discloses increased the intensity of frame at main stress point, guaranteed the holistic operation requirement of frame to make frame weight reduction one fifth strong. The utility model discloses an aspect has reduced the cost of frame, and on the other hand has reduced the emission pollutant of motorcycle, still avoids the corruption of electrophoresis application to the frame.

Description

A lightweight tricycle frame for four countries discharge

Technical Field

The utility model belongs to the technical field of the emission technique and specifically relates to a lightweight tricycle frame that is used for four countries to discharge.

Background

The national emission standard of four-component motorcycles is currently implemented, and as is well known, the emission of an engine of a motorcycle is greatly related to the total weight of the motorcycle, and the higher the weight is, the higher the emission pollutants of the engine is. The weight of the frame is the highest in proportion to the total weight of the motorcycle, and particularly, in a tricycle aiming at carrying a load, the weight of the frame of the tricycle is more than 80 kilograms, so the light weight of the frame of the tricycle is particularly important.

The existing tricycle frame is mostly formed by welding square tube sectional materials, and the square tube sectional materials have the advantage of easy cutting and welding. The square tube section has the disadvantages of large cross section area and large self weight; secondly, during electrophoretic coating, because each pipe section is welded after the tailor-welding, each pipe mouth is semi-closed welded, does not have a specially designed acid discharge outlet, and acid liquor immersed in the square pipe section cannot be completely discharged, and residual acid liquor can corrode the inner pipe, which affects the service life of the frame.

SUMMERY OF THE UTILITY MODEL

In order to overcome not enough among the background art, the utility model discloses a lightweight tricycle frame for four emissions in state, its aim at: on the premise of ensuring the strength of the frame of the tricycle, the weight of the frame is reduced; and the corrosion of residual acid liquid to the frame is avoided when the frame is subjected to electrophoretic coating.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

a light tricycle frame for national four-row discharge comprises a front tricycle frame and a rear container frame which are integrally welded, wherein the front tricycle frame comprises a main beam and a pair of lower side beams; the cross section of the lower edge beam is of a groove-shaped structure, and a plurality of groove-shaped connecting cross braces are connected between the pair of lower edge beams.

The rear cargo box frame is rectangular and comprises two groove-shaped cross beams and four groove-shaped longitudinal beams, wherein notches of the two groove-shaped cross beams are arranged oppositely, and two ends of the four groove-shaped longitudinal beams are correspondingly welded with inner groove surfaces of the two groove-shaped cross beams; between two cell type crossbeams, run through four cell type longerons and weld two pipe crossbeams, the both ends of pipe crossbeam run through the welding with the leaf spring lug.

In order to further improve the technical scheme, the lower edge beam is a channel steel section, the notches of the pair of lower edge beams are oppositely arranged, and two ends of the two channel type connecting cross braces are correspondingly welded in the inner grooves of the pair of lower edge beams.

In order to further improve the technical scheme, the groove type of the groove type cross beam and the groove type longitudinal beam are made of flat sheet metal.

In order to further improve the technical scheme, a pair of vertical connecting grooves are welded between the front vehicle body frame and the rear cargo box frame and are connected between a pair of lower edge beams and a groove-shaped cross beam.

Owing to adopt above-mentioned technical scheme, compare the background art, the utility model discloses following beneficial effect has:

the utility model discloses increased the frame in the intensity of main stress point, can guarantee the holistic operation requirement of frame. Because a pair of lower boundary beams, two groove type crossbeams, four groove type longerons and a pair of vertical connecting grooves have replaced original square tube section bar, consequently lightened frame weight, frame weight has lightened one fifth and has strengthened. On one hand, the cost of the frame is reduced, and on the other hand, the pollutant emission of the motorcycle is reduced.

Besides the main beam, the profiles of the other welding parts of the frame are of a groove-shaped open structure, so that acid liquor residue does not exist in the other welding parts of the frame except the main beam during electrophoretic coating, the corrosion of the residual acid liquor to the frame is avoided, and the service life of the frame is prolonged.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the present invention at another viewing angle.

In the figure: 1. a main beam; 2. a lower edge beam; 3. the cross brace is connected in a groove shape; 4. a trough-shaped cross beam; 5. a groove-shaped longitudinal beam; 6. a circular tube beam; 7. a plate spring lifting lug; 8. and a vertical connecting groove.

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

A light tricycle frame for national four-row exhaust, as shown in figures 1-2, comprises a front tricycle body frame and a rear cargo box frame which are integrally welded. The front car body frame comprises a main beam 1 and a pair of lower side beams 2, the main beam 1 and the pair of lower side beams 2 form a stable structure of a space triangular truss, and the front car body frame has high strength and stability. The lower side beam 2 is a channel steel section and is formed by bending in a two-dimensional space, one end of the lower side beam is welded with the front wheel vertical pipe, and the other end of the lower side beam is welded with the rear container rack. The notches of the pair of lower edge beams 2 are oppositely arranged, and the two ends of the two groove-shaped connecting cross braces 3 are correspondingly welded in the inner groove surfaces of the pair of lower edge beams 2. An engine is arranged on the two groove type connecting cross braces 3 to provide power for the tricycle.

The rear cargo box frame is a bearing part, a cargo box is connected to the rear cargo box frame, a leaf spring is connected to the rear cargo box frame, and the leaf spring supports the main weight of the whole vehicle. The rear cargo box frame is rectangular and comprises two groove-shaped cross beams 4 and four groove-shaped longitudinal beams 5, wherein notches of the two groove-shaped cross beams 4 are arranged oppositely, and two ends of the four groove-shaped longitudinal beams 5 are welded with inner groove surfaces of the two groove-shaped cross beams 4 correspondingly. The groove-shaped cross beam 4 is characterized in that the groove shape of the groove-shaped longitudinal beam 5 is made of flat plate metal, so that the groove-shaped longitudinal beam 5 and the groove-shaped cross beam 4 can be conveniently inserted and welded. The groove-shaped longitudinal beams 5 and the groove-shaped cross beams 4 are inserted and welded to form welding seams which are staggered in space, and the welding connection strength is high.

Two circular tube cross beams 6 are welded between the two groove-shaped cross beams 4 through the four groove-shaped longitudinal beams 5. Two circular tube crossbeams 6 run through and are welded with four groove-shaped longitudinal beams 5, so that the strength of the rear cargo box frame is enhanced. The biggest stress point of the rear cargo box frame is located at the four leaf spring lifting lugs 7, and in order to reinforce the strength of the leaf spring lifting lugs 7, two ends of the circular tube cross beam 6 are in penetrating welding with the leaf spring lifting lugs 7, so that the four groove-shaped longitudinal beams 5 and the pair of lower side beams 2 bear the supporting reaction force of the leaf springs together.

In order to continuously reduce the weight of the frame and enhance the overall strength of the frame, a pair of vertical connecting grooves 8 are welded between the front body frame and the rear cargo box frame, and the vertical connecting grooves 8 are welded between the pair of lower side beams 2 and the groove-shaped cross beam 4.

The utility model adopts the structure, the intensity of the frame at the main stress point is increased, and the integral use requirement of the frame can be ensured. Because a pair of lower boundary beams 2, two groove type crossbeams 4, four groove type longitudinal beams 5 and a pair of vertical connecting grooves 8 replace the original square tube section bar, the weight of the frame is reduced, and the weight of the frame is reduced by about one fifth.

Besides the main beam 1, the profiles of the other welding parts of the frame are of a groove-shaped open structure, so that the other welding parts of the frame except the main beam 1 do not have acid liquor residue during electrophoretic coating, the corrosion of the residual acid liquor to the frame is avoided, and the service life of the frame is prolonged.

The part of the utility model not detailed is prior art. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a lightweight tricycle frame for four countries discharge, includes integrative welded preceding automobile body frame and back cargo tank frame, characterized by: the front vehicle body frame comprises a main beam (1) and a pair of lower side beams (2); the cross section of the lower edge beam (2) is of a groove-shaped structure, and a plurality of groove-shaped connecting cross braces (3) are connected between the pair of lower edge beams (2);

the rear cargo box frame is rectangular and comprises two groove-shaped cross beams (4) and four groove-shaped longitudinal beams (5), wherein notches of the two groove-shaped cross beams (4) are arranged oppositely, and two ends of the four groove-shaped longitudinal beams (5) are correspondingly welded with inner groove surfaces of the two groove-shaped cross beams (4); between two groove type crossbeams (4), run through four groove type longerons (5) and weld two pipe crossbeams (6), the both ends of pipe crossbeam (6) run through the welding with leaf spring lug (7).

2. The light-weight tricycle frame for national four-row exhaust of claim 1 is characterized in that: the lower boundary beam (2) is a channel steel section, the notches of the pair of lower boundary beams (2) are arranged oppositely, and the two ends of the two channel type connecting cross braces (3) are correspondingly welded in the inner groove surfaces of the pair of lower boundary beams (2).

3. The light-weight tricycle frame for national four-row exhaust of claim 1 is characterized in that: the groove-shaped cross beam (4) and the groove-shaped longitudinal beam (5) are made of flat sheet metal.

4. The light-weight tricycle frame for national four-row exhaust of claim 1 is characterized in that: a pair of vertical connecting grooves (8) are welded between the front car body frame and the rear cargo box frame, and the vertical connecting grooves (8) are connected between the pair of lower edge beams (2) and the groove-shaped cross beam (4).