Motorcycle crank connecting structure

Abstract

The utility model relates to the technical field of crank connecting structures, and discloses a motorcycle crank connecting structure which comprises a right crank and a left crank, the right crank and the left crank are mutually symmetrical, the opposite sides of the right crank and the left crank are provided with the same crank pin shaft, and the outer wall of the middle of the crank pin shaft is sleeved with a transmission connecting rod. And reinforcing rods which are symmetrically arranged are fixedly connected to the outer wall of one side of the transmission connecting rod. The reinforcing rods which are symmetrically arranged are fixedly installed on the transmission connecting rod, the annular grooves are formed in the two second bearings, the connecting blocks are connected to the inner walls of the annular grooves in a sliding mode, and the two reinforcing rods are fixedly connected to the two connecting blocks respectively, so that the effect of further stably supporting installation of the transmission connecting rod can be achieved; the phenomenon that the transmission connecting rod deviates left and right on the crank pin shaft is avoided, long-time stable work of the transmission connecting rod is facilitated, stable operation of the transmission connecting rod is guaranteed, and the transmission connecting rod is practical and suitable for wide application and popularization.

Description

Technical Field

[0001] This utility model belongs to the technical field of crank connection structure, specifically, it relates to a crank connection structure for motorcycles. Background Technology

[0002] The crankshaft and connecting rod mechanism is the main motion mechanism of an engine. Its function is to convert the reciprocating motion of the piston into the rotational motion of the crankshaft, and at the same time, to convert the force acting on the piston into the torque output by the crankshaft to drive the wheels to rotate. The crankshaft and connecting rod mechanism consists of components such as the piston assembly, connecting rod assembly, crankshaft, and flywheel assembly.

[0003] The motorcycle crankshaft connection structure is located inside the engine and is one of the most important components of the engine. It consists of the crankshaft main shaft and the crankshaft connecting rod. It connects the crankshaft main shaft and the piston through the connecting rod, thereby converting the combustion energy into mechanical energy and driving the piston in the cylinder to reciprocate. Currently, the transmission connecting rod is mounted on the crank pin. However, after long-term operation, the transmission connecting rod is prone to lateral displacement on the crank pin, which is not conducive to the stable operation of the transmission connecting rod over a long period of time. In view of this, this utility model proposes a motorcycle crankshaft connection structure to solve the above problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0005] A motorcycle crank connection structure includes a right crank and a left crank, which are symmetrical to each other. The same crank pin is installed on the opposite side of the right and left cranks. A transmission connecting rod is sleeved on the outer wall of the middle part of the crank pin. A symmetrically arranged reinforcing rod is fixedly connected to the outer wall of one side of the transmission connecting rod. An annular groove is opened on the outer wall of each of the two second bearings. A connecting block is slidably connected to the inner wall of each of the two annular grooves. One end of each of the two reinforcing rods is fixedly connected to the outer wall of one side of the two connecting blocks.

[0006] In a preferred embodiment of this utility model, a second bearing is installed on the opposite side of the right crank and the left crank, the two second bearings are symmetrical to each other, and the two ends of the crank pin are respectively installed on the two second bearings.

[0007] In a preferred embodiment of this utility model, guide grooves are provided on the inner wall of one side of both annular grooves.

[0008] In a preferred embodiment of this utility model, a limiting block is fixedly connected to one side of the outer wall of each of the two connecting blocks, and the two limiting blocks are slidably connected to the inner walls of the two guide grooves respectively.

[0009] In a preferred embodiment of this utility model, a first bearing is installed on both the right crank and the left crank, and a drive shaft is installed on each of the first bearings.

[0010] Compared with the prior art, the present invention has the following advantages:

[0011] This invention features symmetrically arranged reinforcing rods fixedly installed on the transmission connecting rod. Annular grooves are formed on both second bearings, and connecting blocks are slidably connected to the inner walls of these grooves. The two reinforcing rods are respectively fixedly connected to the two connecting blocks, providing further stable support for the transmission connecting rod installation and preventing lateral displacement of the connecting rod on the crank pin. This facilitates stable operation of the transmission connecting rod over extended periods. Furthermore, a limiting block is fixedly connected to one side of the connecting block via a guide groove formed on the inner wall of the annular groove, and this limiting block is slidably connected to the inner wall of the guide groove. This limits the movement of the connecting block, preventing it from derailing during movement on the annular groove and ensuring stable operation of the transmission connecting rod.

[0012] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0013] In the attached diagram:

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of this utility model from below;

[0016] Figure 3 This is a top view of the cross-section of the present invention;

[0017] Figure 4 This is a side view of the cross-section structure of this utility model;

[0018] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0019] In the diagram: 1. Right crank; 2. Left crank; 3. First bearing; 4. Drive shaft; 5. Second bearing; 6. Connecting rod; 7. Crank pin; 8. Annular groove; 9. Connecting block; 10. Reinforcing rod; 11. Guide groove; 12. Limiting block. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0021] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0022] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0023] like Figures 1 to 5 As shown

[0024] A motorcycle crank connection structure includes a right crank 1 and a left crank 2, which are symmetrical to each other. A crank pin 7 is mounted on opposite sides of both the right crank 1 and the left crank 2. A second bearing 5 is mounted on opposite sides of both the right crank 1 and the left crank 2, and the two second bearings 5 ​​are symmetrical to each other. Both ends of the crank pin 7 are respectively mounted on the two second bearings 5. A transmission connecting rod 6 is sleeved on the outer wall of the middle part of the crank pin 7. Symmetrically arranged reinforcing rods 10 are fixedly connected to one side of the outer wall of the transmission connecting rod 6. An annular groove 8 is formed on the outer wall of each of the two second bearings 5. The two annular grooves 8 contain... The transmission connecting rod 6 is slidably connected to the connecting block 9. One end of each of the two reinforcing rods 10 is fixedly connected to the outer wall of one side of the two connecting blocks 9. By fixing the symmetrically arranged reinforcing rods 10 on the transmission connecting rod 6, and opening annular grooves 8 on each of the two second bearings 5, and slidably connecting the connecting blocks 9 on the inner wall of the annular grooves 8, the two reinforcing rods 10 are fixedly connected to the two connecting blocks 9, which can further stabilize and support the installation of the transmission connecting rod 6, prevent the transmission connecting rod 6 from shifting left and right on the crank pin 7, and facilitate the long-term stable operation of the transmission connecting rod 6.

[0025] In a specific embodiment, guide grooves 11 are provided on one side of the inner wall of each of the two annular grooves 8, and limit blocks 12 are fixedly connected to one side of the outer wall of each of the two connecting blocks 9. The two limit blocks 12 are slidably connected to the inner wall of the two guide grooves 11. By the guide grooves 11 provided on the inner wall of the annular groove 8 and the limit blocks 12 fixedly connected to one side of the connecting block 9, and the limit blocks 12 being slidably connected to the inner wall of the guide grooves 11, the connecting block 9 can be limited, preventing the connecting block 9 from derailing when it moves on the annular groove 8, thus ensuring the stable operation of the transmission connecting rod 6. First bearings 3 are installed on both the right crank 1 and the left crank 2, and transmission shafts 4 are installed on both first bearings 3.

[0026] The implementation principle of a motorcycle crank connection structure in this embodiment is as follows:

[0027] In practical use, symmetrically arranged reinforcing rods 10 are fixedly installed on the transmission connecting rod 6. Annular grooves 8 are opened on both second bearings 5, and connecting blocks 9 are slidably connected to the inner walls of the annular grooves 8. The two reinforcing rods 10 are respectively fixedly connected to the two connecting blocks 9, which can further stabilize and support the installation of the transmission connecting rod 6, preventing the transmission connecting rod 6 from shifting left or right on the crank pin 7. This is conducive to the long-term stable operation of the transmission connecting rod 6. Then, a limiting block 12 is fixedly connected to one side of the connecting block 9 through a guide groove 11 opened on the inner wall of the annular groove 8, and the limiting block 12 is slidably connected to the inner wall of the guide groove 11, which can limit the connection block 9 and prevent it from derailing when moving on the annular groove 8, thus ensuring the stable operation of the transmission connecting rod 6.

Claims

1. A motorcycle crank connection structure comprising a right crank (1) and a left crank (2), characterized in that, The right crank (1) and the left crank (2) are symmetrical to each other. The same crank pin (7) is installed on the opposite side of the right crank (1) and the left crank (2). A transmission connecting rod (6) is sleeved on the outer wall of the middle part of the crank pin (7). A symmetrically arranged reinforcing rod (10) is fixedly connected to the outer wall of one side of the transmission connecting rod (6). An annular groove (8) is opened on the outer wall of the two second bearings (5). A connecting block (9) is slidably connected to the inner wall of the two annular grooves (8). One end of the two reinforcing rods (10) is fixedly connected to the outer wall of one side of the two connecting blocks (9).

2. A motorcycle crank connection structure according to claim 1, characterized in that The right crank (1) and the left crank (2) are each equipped with a second bearing (5) on opposite sides. The two second bearings (5) are symmetrical to each other. The two ends of the crank pin (7) are respectively installed on the two second bearings (5).

3. The motorcycle crank connection structure according to claim 1, characterized by Guide grooves (11) are provided on one side of the inner wall of both annular grooves (8).

4. A motorcycle crank connection structure according to claim 3, characterized in that Each of the two connecting blocks (9) has a limiting block (12) fixedly connected to one side of its outer wall, and the two limiting blocks (12) are slidably connected to the inner walls of the two guide grooves (11).

5. A motorcycle crank connection structure according to claim 1, characterized in that, The right crank (1) and the left crank (2) are each equipped with a first bearing (3), and the first bearing (3) is equipped with a drive shaft (4).

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