CN101665134B

CN101665134B - Framework of two-wheeled motor vehicle

Info

Publication number: CN101665134B
Application number: CN2009101909133A
Authority: CN
Inventors: 庞奎; 莫家君; 伯勇
Original assignee: Lifan Industry Group Co Ltd
Current assignee: Lifan Technology Group Co Ltd
Priority date: 2009-09-18
Filing date: 2009-09-18
Publication date: 2011-08-03
Anticipated expiration: 2029-09-18
Also published as: CN101665134A

Abstract

The invention discloses a framework of a two-wheeled motor vehicle. The lower part of a head tube is welded with the upper end of a front inclined tube; the upper part of the head tube is fixed with the front end of a front main tube; a reinforcement tube is welded between the front main tube and the front inclined tube; the rear end of the front main tube is welded on a connecting tube between the front parts of a middle-left main tube and a middle-right main tube; the front ends of the middle-left main tube and the middle-right main tube are respectively welded with the upper parts of a front-left supporting tube and a front-right supporting tube; the rear ends of the middle-left main tube and the middle-right main tube are respectively welded with the middle parts of a rear-left main tube and a rear-right main tube; the upper ends of the front-left supporting tube and the front-right supporting tube are fixed on two side surfaces at the rear part of the front main tube; the lower parts of the front-left supporting tube and the front-right supporting tube are respectively welded with the front ends of the rear-left main tube and the rear-right main tube; and the rear-left main tube and the rear-right main tube are all internally provided with plugging tubes, the length and the shape of which adapt to that of a rear main tube. In the invention, the plugging tubes are arranged in the rear main tube, so that the vibration at a handrail and the rear part of a seat cushion of a large shelf is improved obviously within the speed range of 30-90km/h, and the comfort of riding is effectively improved.

Description

Framework of two-wheeled motor vehicle

Technical field

The invention belongs to technical field of motorcycles, specifically, relate to a kind of skeleton of two-wheeled riding-type motorcycle.

Background technology

The vibration of motor bike not only influences its road-holding property and safety, the more important thing is the travelling comfort that having a strong impact on the people and healthy.Therefore, the travelling comfort of motor bike is exactly the ability that motor bike makes the certain comfort level that is had in chaufeur and the residing vibration environment of occupant in the process of moving.Wherein, skeleton is the matrix of whole motor bike, and motor cycle engine and speed change drive assembly, steering hardware, suspension gear, wheel etc. all are coupled to an integral body by skeleton.Skeleton not only will carry the weight of motorcycle part, occupant and goods, also will bear the effect from external excitations such as mechanical operation such as ground-surface impact, driving engines when the road driving of injustice.

Existing framework of two-wheeled motor vehicle belongs to traditional steel design, is welded by round steel pipe and steel plate.Generally speaking, round steel pipe is straight seam welded steel pipe, and welding process is good, and rigidity and intensity ratio steel plate are good, and than solid drawn pipe difference, it is simple that advantage is mainly reflected in production technology, the production efficiency height, and cost is low, but quality is big.The car load maximum speed is 90Km/h, and speed per hour is in 60～90Km/h interval, and the vibration of car load many places is bigger, has influenced the traveling comfort that the rider rides.Skeletal vibration mainly shows as the pitch vibration and the anterior torsion oscillations with respect to the middle part of front and rear portions, by the personnel's of taking impression mainly be reflected in big shelf handrail, that the seat cushion rear portion begins vibration from speed per hour 30Km/h is bigger, the traveling comfort of taking is relatively poor.

Summary of the invention

Technical matters to be solved by this invention is to provide a kind of framework of two-wheeled motor vehicle, with the vibration at effective reduction skeleton rear portion.

Technical scheme of the present invention is as follows: a kind of framework of two-wheeled motor vehicle, comprise head tube, the front person in charge, front inclined tube, reinforced pipe, the front left stay pipe, the front right stay pipe, the left person in charge, the right person in charge, rear left is responsible for, rear right is responsible for, tube connector and plug pipe, the wherein upper end of the bottom of head tube and front inclined tube welding, the top of head tube and the front person in charge's front end are fixed, between the front person in charge and front inclined tube, be welded with reinforced pipe, the described front person in charge's rear end is welded on left, on the tube connector between the right person in charge front portion, left, the right person in charge's front end respectively with front left, the top welding of right support pipe, left, the right person in charge's rear end respectively with rear left, the right person in charge's middle part welding, described front left, the upper end of right support pipe is fixed on the two sides at front person in charge rear portion, front left, the bottom of right support pipe respectively with rear left, the right person in charge's front end welding, in rear left, be connected with the rear mudguard mounting bracket between the right person in charge's the rear portion, its key is: in described rear left, the right person in charge's inside is provided with the plug pipe, and the length of this plug pipe and moulding and the rear person in charge adapt.

Because skeleton rigidity has a great impact the intrinsic frequency of skeleton, improve the vibration resistance of skeleton, reduce the response of to external world excitation and will set about from the rigidity that improves skeleton.The plug pipe is installed in the present invention dexterously additional in the rear person in charge's inside, can suppress well the pitching distortion at skeleton rear portion, in the handrail that reduces goods carrier, the vibration of seat cushion rear portion, has greatly improved the comfortableness of motorcycle riding.

Above-mentioned rear mudguard mounting bracket is the arch platy structure, and the two ends of this rear mudguard mounting bracket have former and later two legs, and each leg is welded on cooresponding back and is responsible for.The rear mudguard mounting bracket has increased width on the basis of original structure, and has increased the contact area of being responsible for rear left and right, and the so further bonding strength that has strengthened between the rear left and right person in charge can effectively reduce the skeleton afterbody and open entire amplitude.

Beneficial effect: the present invention is by arranging plug pipe in the rear person in charge so that the handrail of goods carrier, seat cushion rear portion the vibration of 30～90km/h velocity shooting be improved significantly, Effective Raise the comfortableness of taking.

Description of drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is Fig. 1 birds-eye view.

Fig. 3 is that the A of Fig. 1 is to view.

The specific embodiment

The invention will be further described below in conjunction with drawings and Examples:

As Fig. 1, Fig. 2 and shown in Figure 3, head tube 1 of the present invention, the preceding person in charge 2, preceding inclined tube 3, reinforced pipe 4, preceding left support tube 5, preceding right support tube 6, a middle left side is responsible for 7, the middle right person in charge 8, a left side, back is responsible for 9, the back is right is responsible for 10, connection pipe 11, rear mudguard mounting bracket 12, upper lateral tube 13, lower transverse tubule 14, first journal stirrup 15, second journal stirrup 16, back leg rest mounting pipe 17, back leg rest is connected and manages 18, connection pipe 19, plug pipe 20, component set-ups such as cassette rack 21 and brace panel, wherein head tube 1 adopts pipe, the place ahead of the person in charge 2 and preceding inclined tube 3 before being positioned at, and low in the past back high dip is arranged, the bottom of this head tube 1 trailing flank and the welding of the upper end of preceding inclined tube 3, preceding inclined tube 3 is a pipe, arranges at rear-inclined in preceding lower end with the upper end.The top of head tube 1 trailing flank and the welding of the front person in charge 2 front end, the front person in charge 2 is quarter bend, and high rear low dip setting was welded with reinforced pipe 4 between the front person in charge 2 and front inclined tube 3 in the past, reinforced pipe 4 is pipe, and the angle between reinforced pipe 4 and the front person in charge 2 is welded with first stiffener 22.

From Fig. 1, Fig. 2 as can be known, before left and

right support tube

5,6, in the left and right person in charge 7,8, the left and right person in charge 9,10 in back all is left-right symmetric and distributes, and preceding left and

right support tube

5,6 and the back the left and right person in charge 9,10 be pipe, and in the left and right person in charge 7,8 be quarter bend.The described front person in charge's 2 rear end is welded on middle left and right and is responsible on the tube connector 11 between 7,8 front portions, and middle left and right is responsible for 7,8 and is similar to level, and is welded with tube connector 19 between the left person in charge 7 and the right person in charge's 8 postmedian.The top welding of the described left person in charge's 7 front end and front left stay pipe 5, the left person in charge's 7 rear end is welded on the bending place that rear left is responsible for 9 middle parts.The top welding of the right person in charge's 8 front end and front right stay pipe 6, the right person in charge's 8 rear end is welded on the bending place that rear right is responsible for 10 middle parts.Left surface with the front person in charge 2 rear portions behind the inside bending in the upper end of described front left stay pipe 5 welds, and the trailing flank at bending place, front left stay pipe 5 bottom and rear left are responsible for 9 front end welding; Right flank with the front person in charge 2 rear portions behind the inside bending in the upper end of front right stay pipe 6 welds, and the trailing flank at the bending place, bottom of front right stay pipe 6 and rear right are responsible for 10 front end welding.

From Fig. 1, Fig. 3 as can be known, between the bottom of preceding left support tube 5 and preceding right support tube 6, be welded with the upper lateral tube 13 and the lower transverse tubule 14 that are parallel to each other, wherein be welded with two first journal stirrups 15 on the upper lateral tube 13 side by side, be welded with two second journal stirrups 16 on the lower transverse tubule 14 side by side, fixed bin cribbing 21, the first journal stirrups 15 and second journal stirrup 16 connect into an integral body by cassette rack 21 between described two first journal stirrups 15 and two second journal stirrups 16.Be equipped with rear leg rest mounting pipe 17 at the rear of front left and

right stay pipe

5,6 bottoms, the front end of leg rest mounting pipe 17 and corresponding front support pipe welding after this, the rear end of rear leg rest mounting pipe 17 is connected by rear leg rest and manages 18 and weld with the corresponding rear person in charge.The back leg rest mounting pipe 17 of described the same side, back leg rest are connected and manage 18, the back is responsible for and the formed angle of preceding support tube is welded with second brace panel 23, and the angle that back leg rest mounting pipe 17 and back leg rest are connected between the pipe 18 is welded with the 3rd brace panel 24.

From Fig. 1, Fig. 2 also as can be known, be provided with plug pipe 20 in the rear left and right person in charge 9,10 inside, the length of this plug pipe 20 and moulding and the rear person in charge adapt, and between the rear portion that rear left and right is responsible for, be provided with rear mudguard mounting bracket 12, this rear mudguard mounting bracket 12 is the arch platy structure, the two ends of rear mudguard mounting bracket 12 have former and later two symmetrical legs, and each leg is welded on the corresponding rear person in charge.All the other structures of the present invention and moulded same as the prior art are not done at this and to be given unnecessary details.

Claims

1. framework of two-wheeled motor vehicle, the upper end welding of the bottom of head tube (1) and preceding inclined tube (3), the top of head tube (1) and the preceding person in charge's (2) front end is fixed, between the preceding person in charge (2) and preceding inclined tube (3), be welded with reinforced pipe (4), the rear end of being responsible for (2) before described is welded on a middle left side, the right person in charge (7,8) on the connection pipe between the front portion (11), a middle left side, the right person in charge (7,8) front end respectively with a preceding left side, right support tube (5,6) top welding, a middle left side, the right person in charge (7,8) rear end is left with the back respectively, the right person in charge (9,10) middle part welding, a left side before described, right support tube (5,6) upper end is fixed on the two sides at the preceding person in charge (2) rear portion, a preceding left side, right support tube (5,6) bottom is left with the back respectively, the right person in charge (9,10) front end welding, on a left side, back, the right person in charge (9,10) be connected with rear mudguard mounting bracket (12) between the rear portion, it is characterized in that: on a left side, described back, the right person in charge (9,10) inside is provided with plug pipe (20), the length of this plug pipe (20) and moulding and a left side, back, right person in charge adapts; Described rear mudguard mounting bracket (12) is the arch platy structure, and the two ends of this rear mudguard mounting bracket (12) have former and later two legs, and each leg is welded on the cooresponding left and right person in charge in back.