Motorcycle kickstand molded line determination method

Abstract

The invention discloses a motorcycle kickstand molded line determination method, which relates to the field of motorcycles, and comprises the following steps: S1, designing the ground clearance of a rear wheel according to the structure of a motorcycle body; s2, the position of the mass center of the whole vehicle is determined, and the vehicle weight, the horizontal distance L1 from the mass center G to the axis D1 of a front wheel, the horizontal distance L2 from the axis C of the main support to the axis D1 of the front wheel, the horizontal distance L4 from the axis C of the main support to the landing point of the main support and the distance L5 from the landing point of the main support to the acting point A of the main support are measured; s3, the stress of the center of the main support is F1; s4, the acting force of the pedal is F2; s5, the actual starting force value F2 is judged, p is not adjusted at all, the whole vehicle can be normally started, and when F2 is larger than or equal to P, the whole vehicle cannot be started; s6, when the whole vehicle cannot be started, the landing point of the main support is adjusted; s7, arc design; by adding the layout of an arc-shaped landing point, the moment relation in the supporting process of the motorcycle is improved, and therefore the working effect of easy supporting is achieved.

Description

Technical Field

[0001] The present invention relates to the field of motorcycles, and particularly to a method for determining the profile line of a motorcycle footrest. Background Art

[0002] A motorcycle is a two-wheeled or three-wheeled vehicle that is steered by a handlebar to turn the front wheel. It is light, flexible, and travels fast. It is widely used for patrol, passenger and cargo transportation, etc., and is also used as a sports equipment. A motorcycle footrest refers to a motorcycle component used on a two-wheeled motorcycle to support a stationary motorcycle. At present, motorcycles are developing in a diverse manner in terms of styling and functions, and the overall vehicle weight is generally increasing, and the layout on the vehicle body is also in different states according to the vehicle body design. Therefore, due to the differences in the overall vehicle weight and the layout of the structure, it is difficult to park the motorcycle with a conventional rod-type footrest. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a method for determining the profile line of a motorcycle footrest, by adding the layout of an arc-shaped grounding point to improve the torque relationship during the motorcycle lifting process, so as to achieve the working effect of easy lifting.

[0004] The method for determining the profile line of a motorcycle footrest provided by the present invention adopts the following technical solutions:

[0005] A method for determining the profile line of a motorcycle footrest includes the following steps:

[0006] S1. According to the vehicle body structure and the state of the main support of the whole vehicle being lifted, design the height of the rear wheel off the ground, so as to determine the basic dimensions of the parking mechanism;

[0007] S2. Determine the position of the center of mass of the whole vehicle by measurement, and at the same time measure the vehicle weight, the horizontal distance L1 from the center of mass G to the front wheel axis D1, the horizontal distance L2 from the main support axis C to the front wheel axis D1, the horizontal distance L4 from the main support axis C to the main support grounding point, and the distance L5 from the main support grounding point to the main support force application point A;

[0008] S3. The force on the main support center is F1, and F1 = G * L1 / L2;

[0009] S4. The force of the foot pedal is F2, and F2 = F1 * L4 / L5;

[0010] S5. Judgment of the actual starting force value F2: When the force of F2 is greater than the stepping force P of a person, the whole vehicle will not move. When F2 < P and no adjustment is made, the whole vehicle can start normally. When F2 ≥ P, the whole vehicle cannot start;

[0011] S6. Adjust the main support grounding point when the whole vehicle cannot start: The moving value of the main support grounding point is L6;

[0012] S7, arc design: Pedal arc design is required when L6 needs to be adjusted.

[0013] Further, in step S6, L6 is calculated as follows:

[0014] P*(L6+L5)=F1*(L4-L6)

[0015] L6=(F1*L4–P*L5) / (P+F1)

[0016] L6=(G*L1*L4 / L2-P*L5) / (P+G*L1 / L2).

[0017] Further, in step S7, when the horizontal distance between the main support axis center and the main support landing point is L4, the lower landing point is the original starting point B, and when the horizontal distance between the main support axis center and the main support landing point is L6, the lower landing point is the new starting point B1, and the new starting point B1 is connected to the original starting point B by arc BB1.

[0018] Furthermore, the arc BB1 is formed by the intersection of a starting arc and a supporting arc.

[0019] Furthermore, the starting arc has the starting point A of the main support as the center and AB1 as the diameter.

[0020] Furthermore, the supporting arc has the axis C of the main support as the center and CB as the diameter.

[0021] In summary, the present invention has at least one of the following beneficial effects: by adding an arc-shaped landing point layout, the torque relationship in the motorcycle propping up process is improved, thereby achieving an easy propping up working effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of a normal state of a motorcycle according to an embodiment of the present invention;

[0023] Figure 2 It is a schematic diagram of adjusting the landing point of the main support when the whole vehicle cannot be started according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the design of arc BB1 according to an embodiment of the present invention;

[0025] Figure 4 Schematic diagram of arc BB1 according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The following describes the implementation modes of the present invention through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0027] The following will further elaborate on the present invention Figure 1-4 in conjunction with the appended

[0028] The embodiments of the present invention disclose a method for determining the footrest type line of a motorcycle. Referring to Figure 1-Figure 4 , the method for determining the footrest type line of a motorcycle includes the following steps:

[0029] Step 1: Design the rear wheel ground clearance according to the vehicle body structure and the fully extended state of the main stand of the whole vehicle, so as to determine the basic dimensions of the parking mechanism.

[0030] Step 2: Determine the center of mass position of the whole vehicle through measurement, and at the same time measure the vehicle weight, the horizontal distance L1 from the center of mass G to the front wheel axis D1, the front wheel axis is D2, the horizontal distance L2 from the main stand axis C to the front wheel axis D1, the horizontal distance L4 from the main stand axis C to the main stand landing point, and the distance L5 from the main stand landing point to the main stand force application point A.

[0031] Step 3: The force on the main stand center is F1, and F1 = G * L1 / L2.

[0032] Step 4: The force on the footrest is F2, and F2 = F1 * L4 / L5.

[0033] Step 5: Judgment of the actual starting force value F2: When the force of F2 is greater than the stepping force P of a person, the whole vehicle will not move. When F2 < P, no adjustment is made and the whole vehicle can be started normally. When F2 ≥ P, the whole vehicle cannot be started.

[0034] Step 6: Adjust the main stand landing point when the whole vehicle cannot be started: First, determine the ratio F2 / P that exceeds. The moving value of the main stand landing point is L6, and L6 is calculated as follows:

[0035] P * (L6 + L5) = F1 * (L4 - L6)

[0036] L6 = (F1 * L4 – P * L5) / (P + F1)

[0037] L6 = (G * L1 * L4 / L2 - P * L5) / (P + G * L1 / L2).

[0038] Step 7, arc design: When L6 needs to be adjusted, the pedal arc design needs to be performed. When the horizontal distance between the center of the main bracket shaft and the main bracket landing point is L4, the lower landing point is the original starting point B. When the horizontal distance between the center of the main bracket shaft and the main bracket landing point is L6, the lower landing point is the new starting point B1. Since the support height remains unchanged, the height of the main bracket rotation center C from the ground remains unchanged when the two wheels are on the ground. The landing point B and the landing point B1 have changed, and the grounding part structure of the lower main bracket has changed. The new starting point B1 is connected to the original starting point B by arc BB1.

[0039] The arc BB1 is formed by the intersection of the starting arc and the supporting arc. The starting arc has the starting point A of the main bracket as the center and AB1 as the diameter. The supporting arc has the axis C of the main bracket as the center and CB as the diameter. The intersection of the starting arc and the supporting arc below forms an arc from the new starting point B1 to the original starting point B, refer to the shaded part in the figure.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A method for determining a motorcycle kick support profile, characterized in that: It includes the following steps: S1. Design the rear wheel ground clearance according to the vehicle body structure and the fully extended state of the main vehicle support, so as to determine the basic dimensions of the parking mechanism; S2. Determine the center of mass position of the whole vehicle by measurement, and at the same time measure the vehicle weight, the horizontal distance L1 between the center of mass G and the front wheel axis D1, the horizontal distance L2 between the main support axis C and the front wheel axis D1, the horizontal distance L4 between the main support axis C and the main support landing point, and the distance L5 between the main support landing point and the main support force application point A; S3. The force on the main support center is F1, and F1 = G * L1 / L2; S4. The force of the foot pedal is F2, and F2 = F1 * L4 / L5; S5. Judgment of the actual starting force value F2: When the force of F2 is greater than the human stepping force P, the whole vehicle will not move. When F2 < P, no adjustment is made and the whole vehicle can start normally. When F2 ≥ P, the whole vehicle cannot start; S6. Adjust the main support landing point when the whole vehicle cannot start: The moving value of the main support landing point is L6; S7. Arc design: When adjusting L6, the pedal arc needs to be designed.

2. The method for determining the motorcycle kick support profile according to claim 1, characterized in that: Among them, L6 in step S6 is calculated as follows: P * (L6 + L5) = F1 * (L4 - L6) L6 = (F1 * L4 – P * L5) / (P + F1) L6 = (G * L1 * L4 / L2 - P * L5) / (P + G * L1 / L2).

3. The method for determining the motorcycle kick support profile according to claim 1, characterized in that: In step S7, the lower landing point when the horizontal distance between the main support axis center and the main support landing point is L4 is the original starting point B, and the lower landing point when the horizontal distance between the main support axis center and the main support landing point is L6 is the new starting point B1. The new starting point B1 and the original starting point B are connected by an arc BB1.

4. The method for determining the motorcycle kick support profile according to claim 3, characterized in that: The arc BB1 is formed by the intersection of the starting arc and the lifting arc.

5. The method for determining the motorcycle kick support profile according to claim 4, characterized in that: Among them, the starting arc takes the main support starting force application point A as the center and AB1 as the diameter.

6. The method for determining the motorcycle kick support profile according to claim 4, characterized in that: The lifting arc takes the main support axis C as the center and CB as the diameter.

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