Motorcycle frame

Abstract

The invention discloses a motorcycle frame which comprises a front vertical pipe 1, a left main beam pipe, a right main beam pipe and an auxiliary support, the front vertical pipe 1 is used for installing a steering handle and a front shock absorber, the left main beam pipe 2b and the right main beam pipe 2a are symmetrically fixed to the two sides of the front vertical pipe 1 and extend backwards to the tail of the frame, the front end and the rear end of the left main beam pipe 2b and the right main beam pipe 2a are in a splayed shape, and the middle parts of the left main beam pipe 2b and the right main beam pipe 2a are arranged in parallel. A first transverse pipe 11, a second transverse pipe 14, a middle reinforcing connecting plate 16, a third transverse pipe 19 and a tail reinforcing connecting plate 20 are sequentially fixed from head to tail so as to reinforce connection. A head reinforcing plate 10 is fixedly installed at the upper end of the front vertical pipe 1, and the left main beam pipe 2a, the right main beam pipe 2b and the first transverse pipe 11 are fixedly connected into a whole.

Description

Technical Field

[0001] The invention relates to the technical field of motorcycle frames, in particular to a motorcycle frame. Background Art

[0002] The frame is the basic load-bearing part of a motorcycle, which plays a role in connecting and supporting the motorcycle. The motorcycle engine, transmission, suspension, steering, wheels and covering parts can be organically connected into a whole through the frame;

[0003] Each component is also kept in a relatively stable spatial position by the frame. The frame bears the weight of the driver and the components, and is also affected by various impact and vibration loads during driving.

[0004] Therefore, the frame is required to have sufficient strength and rigidity. At present, most motorcycle frames on the market are made by fixing the front and rear sections, with many connection points. The frame strength, rigidity, load-bearing quality and anti-impact and vibration load capacity are all lacking, which seriously affects the vehicle's control safety and riding comfort. Summary of the invention

[0005] In order to overcome the shortcomings of the prior art and effectively solve at least one of the above technical defects, the purpose of the present invention is to provide a motorcycle frame, which reduces the number of connection points and improves its strength and rigidity so that it can adapt to the impact and vibration loads of a larger load-bearing mass and multiple working conditions of the road surface, thereby improving the handling safety and riding comfort of the whole vehicle.

[0006] Technical Solution

[0007] The object of the present invention is achieved as follows: a motorcycle frame, comprising a front riser for a steering handle and a front shock absorber, left and right main beam tubes and auxiliary supports, a left main beam tube and a right main beam tube symmetrically fixed on both sides of the front riser, the left main beam tube and the right main beam tube extend backward to the rear of the frame, the front and rear ends are in a similar figure eight shape, the middle part is arranged in parallel, and a transverse tube 1, a transverse tube 2, a middle reinforcing connecting plate, a transverse tube 3 and a rear reinforcing connecting plate are fixed from the beginning to the end to strengthen the connection. The upper end of the front riser is fixedly installed with a head reinforcing plate, and the left main beam tube, the right main beam tube and the transverse tube 1 are fixedly connected into a whole. The lower end of the front riser is symmetrically fixedly installed with a left secondary beam tube and a right secondary beam tube, and the lower end of the front riser is also fixedly installed with a right head reinforcing plate, and the left secondary beam tube and the right secondary beam tube are connected into a whole. The left secondary beam tube and the right secondary beam tube are fixedly connected through a lower transverse tube 4. The lower transverse tube 4 is fixedly installed with a radiator mounting right bracket, a radiator mounting left bracket and several other mounting hanging pieces. The right main beam tube and the right secondary beam tube are arranged up and down, and are fixedly connected in the middle by the right auxiliary vertical pipe and the right front pipe. The left main beam tube and the left secondary beam tube are arranged up and down, and are fixedly connected in the middle by the left auxiliary vertical pipe and the left front pipe. The lower ends of the left secondary beam tube and the right secondary beam tube are respectively fixed with the right bracket mounting tube and the left bracket mounting tube.

[0008] The right front side tube and the left front side tube are arranged symmetrically along the center line and are fixedly connected by a U-shaped cross tube. The engine upper hanger is fixedly installed in the middle of the straight section of the U-shaped cross tube; the engine upper hanger has a rectangular cross section, with arc openings at the front and rear, and is fixedly connected to two mounting sleeves. The right front side tube and the right main beam tube are fixedly connected at the front and rear by installing reinforcing plates 1 and 2. The left front side tube and the left main beam tube are fixedly connected at the front and rear by installing reinforcing plates 3 and 4.

[0009] The right front tube is L-shaped, with one end fixedly connected to the right support tube and the other end fixedly connected to the right secondary beam tube; the left front tube is L-shaped, with one end fixedly connected to the left support tube and the other end fixedly connected to the left secondary beam tube.

[0010] The right support tube is fixed at the tail of the right main beam tube, and the connection is strengthened by fixing reinforcement plate 5 and reinforcement plate 6. The middle section of the fixed right support tube is fixedly connected with the middle section of the right main beam tube through the right front side tube; the lower part of the right support tube is fixed with the lower cross tube and the engine mounting bracket 2.

[0011] The left main beam pipe part fixes the left support pipe through the fixed reinforcement plate 7 and the strong plate 8. The middle section of the left support pipe is fixedly connected with the middle section of the left main beam pipe through the right front pipe; the lower part of the left support pipe is fixed with the lower cross pipe and the engine mounting bracket 3.

[0012] The reinforcement plate five and the reinforcement plate seven have U-shaped cross sections and are used to fix the right rear shock-absorbing mounting shaft and the left rear shock-absorbing mounting shaft respectively.

[0013] The lower transverse tubes are respectively fixed with a right hanging piece at the bottom of the engine, a left hanging piece at the bottom of the engine and a side bracket mounting piece.

[0014] The second engine mounting bracket is formed by bending and fixing two plates, with its top fixed to the right front tube, its bottom fixed to the lower cross tube, its middle fixed to the right support tube, and the engine mounting sleeve fixed at the center of the bracket; the third engine mounting bracket is formed by bending and fixing two plates, with its top fixed to the left front tube, its bottom fixed to the lower cross tube, its middle fixed to the left support tube, and the engine mounting sleeve fixed at the center of the bracket.

[0015] Beneficial effects:

[0016] Compared with the prior art, the motorcycle frame structure involved in the present invention specifically improves the installation positions of various components on the frame, and the structural stability is further improved. It can adapt to the impact loads of larger load-bearing mass and multiple working conditions of road surface, thereby improving the vehicle's handling safety and riding comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is an axonometric view of the present invention.

[0019] Figure 2 It is a side view of the present invention.

[0020] Figure 3 It is a top view of the present invention.

[0021] Figure 4 It is a left side view of the present invention. Specific implementation method:

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Reference Figure 1 to Figure 4The present invention relates to a motorcycle frame, comprising a front riser 1 for the steering handle and front shock absorber installation, left and right main beam tubes and auxiliary supports, a left main beam tube 2b and a right main beam tube 2a symmetrically fixed on both sides of the front riser 1, the left main beam tube 2b and the right main beam tube 2a extend backward to the rear of the frame, the front and rear ends are in a similar figure eight shape, the middle part is arranged in parallel, and a cross tube 1 11, a cross tube 2 14, a middle reinforcement connecting plate 16, a cross tube 3 19 and a rear reinforcement connecting plate 20 are fixed from the beginning to the end to strengthen the connection. The head reinforcement plate 10 is fixedly installed on the upper end of the front riser 1, and the left main beam tube 2a, the right main beam tube 2b and the cross tube 1 11 are fixedly connected into a whole. The left secondary beam tube 3b and the right secondary beam tube 3a are symmetrically fixedly installed on the lower end of the front riser 1, and the right head reinforcement plate 5 is also fixedly installed on the lower end of the front riser 1, and the left secondary beam tube 3b and the right secondary beam tube 3a are connected into a whole. The left secondary beam tube 3b and the right secondary beam tube 3a are fixedly connected through the lower transverse tube 47. The lower transverse tube 47 is fixedly installed with the radiator mounting right bracket 8a, the radiator mounting left bracket 8b and several other mounting hanging pieces. The right main beam tube 2a and the right secondary beam tube 3a are arranged up and down, and are fixedly connected in the middle through the right auxiliary vertical pipe 4a and the right front side pipe 26a. The left main beam tube 2b and the left secondary beam tube 3b are arranged up and down, and are fixedly connected in the middle through the left auxiliary vertical pipe 4b and the left front side pipe 26b. The lower ends of the left secondary beam tube 3b and the right secondary beam tube 3a are respectively fixed with the right bracket mounting tube 9a and the left bracket mounting tube 9b.

[0024] Reference Figure 1 to Figure 4 The right front tube 26a and the left front tube 26b are arranged symmetrically along the center line and are fixedly connected by a U-shaped cross tube 30. The engine upper hanger 31 is fixedly installed in the middle of the straight section of the U-shaped cross tube 30; the engine upper hanger 31 has a rectangular cross section, with arc openings at the front and rear, and is fixedly connected to two mounting sleeves. The right front tube 26a and the right main beam tube 2a are fixedly connected by installing a reinforcing plate 1 13a and a reinforcing plate 2 27a at the front and rear. The left front tube 26b and the left main beam tube 2b are fixedly connected by installing a reinforcing plate 3 13b and a reinforcing plate 4 27b at the front and rear.

[0025] Reference Figure 1 , Figure 2 The right front tube 26a is L-shaped, with one end fixedly connected to the right support tube 15a and the other end fixedly connected to the right secondary beam tube 3a; the left front tube 26b is L-shaped, with one end fixedly connected to the left support tube 15b and the other end fixedly connected to the left secondary beam tube 3b.

[0026] Reference Figure 1 , Figure 2The right support tube 15a is fixed to the tail of the right main beam tube 2a, and the connection is strengthened by fixing the reinforcement plate 5 17a and the reinforcement plate 6 21a. The middle section of the fixed right support tube 15a is fixedly connected with the middle section of the right main beam tube 2a through the right front tube 26a; the lower part of the right support tube 15a is fixed with the lower cross tube 22 and the engine mounting bracket 2 23a.

[0027] The left main beam tube 2b is fixed with the left support tube 15b through the fixed reinforcement plate 7 17b and the reinforcement plate 8 21b. The middle section of the left support tube 15b is fixedly connected with the middle section of the left main beam tube 2b through the right front tube 26b; the lower part of the left support tube 15b is fixed with the lower cross tube 22 and the engine mounting bracket 3 23b.

[0028] The reinforcing plate five 17a and the reinforcing plate seven 17b have U-shaped cross-sections and respectively fix the right rear shock-absorbing mounting shaft 18a and the left rear shock-absorbing mounting shaft 18b.

[0029] Reference Figure 1 , Figure 2 The lower cross tube 22 fixes the right hanging piece 24a at the bottom of the engine, the left hanging piece 24b at the bottom of the engine and the side bracket mounting piece 25 respectively.

[0030] Reference Figure 1 , Figure 2 The second engine mounting bracket 23a is formed by bending and fixing two plates, with its top fixed to the right front side tube 26a, its bottom fixed to the lower cross tube 22, its middle fixed to the right support tube 15a, and the engine mounting shaft sleeve fixed at the center of the bracket; the third engine mounting bracket 23b is formed by bending and fixing two plates, with its top fixed to the left front side tube 26b, its bottom fixed to the lower cross tube 22, its middle fixed to the left support tube 15b, and the engine mounting shaft sleeve fixed at the center of the bracket.

[0031] The above is only a preferred embodiment of the present invention, and does not limit the structure of the present invention in any form. Any simple modification and equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A motorcycle frame, characterized in that: include: A front vertical tube 1 for installing a steering handle and a front shock absorber, left and right main beam tubes and auxiliary supports, a left main beam tube 2b, and a right main beam tube 2a are symmetrically fixed on both sides of the front vertical tube 1, the left main beam tube 2b and the right main beam tube 2a extend rearward to the rear end of the frame, and the front and rear ends are in a figure eight shape, and the middle parts are arranged in parallel. From the beginning to the end, a cross tube 11, a cross tube 24, a middle reinforcing connecting plate 16, a cross tube 39 and a rear reinforcing connecting plate 20 are successively fixed to strengthen the connection; a head reinforcing plate 10 is fixedly installed on the upper end of the front vertical tube 1, and the left main beam tube 2b, the right main beam tube 2a, and the cross tube 11 are fixedly connected into a whole; a left secondary beam tube 3b and a right secondary beam tube 3a are symmetrically fixedly installed on the lower end of the front vertical tube 1, and a right head reinforcing plate 5 is also fixedly installed on the lower end of the front vertical tube 1, and the left secondary beam tube 3b and the right secondary beam tube 3a are connected into a whole. The left secondary beam tube 3b is fixedly connected to the right secondary beam tube 3a through the lower cross tube four 7; the lower cross tube four 7 is fixedly installed with the radiator mounting right bracket 8a, the radiator mounting left bracket 8b and several other mounting hanging plates; the right main beam tube 2a and the right secondary beam tube 3a are arranged up and down, and are fixedly connected in the middle through the right auxiliary vertical pipe 4a and the right front side pipe 26a; the left main beam tube 2b and the left secondary beam tube 3b are arranged up and down, and are fixedly connected in the middle through the left auxiliary vertical pipe 4b and the left front side pipe 26b; the right bracket mounting tube 9a and the left bracket mounting tube 9b are fixed to the lower ends of the left secondary beam tube 3b and the right secondary beam tube 3a respectively.

2. The motorcycle frame according to claim 1, characterized in that: The right front side tube 26a and the left front side tube 26b are arranged symmetrically along the center line and are fixedly connected by a U-shaped cross tube 30; an engine upper hanger 31 is fixedly installed in the middle of the straight section of the U-shaped cross tube 30; the engine upper hanger 31 is of a rectangular cross section, with arc openings at the front and rear, and two mounting sleeves are fixedly connected; the right front side tube 26a and the right main beam tube 2a are fixedly connected at the front and rear by installing reinforcing plates 1 13a and 27a; the left front side tube 26b and the left main beam tube 2b are fixedly connected at the front and rear by installing reinforcing plates 3 13b and 4 27b.

3. The motorcycle frame according to any one of claims 1-2, characterized in that: The right front tube 26a is L-shaped, with one end fixedly connected to the right support tube 15a and the other end fixedly connected to the right secondary beam tube 3a; the left front tube 26b is L-shaped, with one end fixedly connected to the left support tube 15b and the other end fixedly connected to the left secondary beam tube 3b.

4. The motorcycle frame according to claim 1, characterized in that: The right supporting tube 15a is fixed at the tail of the right main beam tube 2a, and the connection is strengthened by fixing reinforcing plate five 17a and reinforcing plate six 21a; the middle section of the fixed right supporting tube 15a is fixedly connected to the middle section of the right main beam tube 2a through the right front side tube 26a; the lower part of the right supporting tube 15a is fixed with the lower cross tube 22 and the engine mounting bracket two 23a.

5. The motorcycle frame according to claim 1, characterized in that: The left main beam tube 2b is fixed with the left support tube 15b and is connected by fixing the reinforcement plate seven 17b and the reinforcement plate eight 21b; the middle section of the left support tube 15b is fixedly connected with the middle section of the left main beam tube 2b through the right front tube 26b; the lower part of the left support tube 15b is fixed with the lower cross tube 22 and the engine mounting bracket three 23b.

6. The motorcycle frame according to claim 4, characterized in that: The reinforcing plate 5 17a has a U-shaped cross section and fixes the right rear shock-absorbing mounting shaft 18a.

7. The motorcycle frame according to claim 5, characterized in that: The reinforcing plate 7 17b has a U-shaped cross section and fixes the left rear shock-absorbing mounting shaft 18b.

8. The motorcycle frame according to claim 4, characterized in that: The lower cross tube 22 fixes the right hanging piece 24a at the bottom of the engine, the left hanging piece 24b at the bottom of the engine and the side bracket mounting piece 25 respectively.

9. The motorcycle frame according to claim 4, characterized in that: The engine mounting bracket 23a is formed by bending and fixing two plates, with its top fixed to the right front tube 26a, the bottom fixed to the lower cross tube 22, the middle fixed to the right support tube 15a, and the engine mounting sleeve fixed at the center of the bracket.

10. The motorcycle frame according to claim 5, characterized in that: The engine mounting bracket three 23b is formed by bending and fixing two plates, with its top fixed to the left front side tube 26b, the bottom fixed to the lower cross tube 22, the middle fixed to the left support tube 15b, and the engine mounting sleeve fixed at the center of the bracket.

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