Crankshaft assembly with reinforced main journal structure

Abstract

The utility model relates to the technical field of machinery, in particular to a crankshaft assembly with a reinforced main journal structure, which comprises a first main journal, a connecting mechanism, a second main journal, a gear, a reinforced sleeve and a reinforced block, the gear is arranged on the side, close to the connecting mechanism, outside the first main journal, the reinforcing sleeve is arranged on the side, away from the second main journal, outside the first main journal, and the reinforcing block is arranged on the side, away from the first main journal, of the second main journal. The reinforcing sleeve and the reinforcing block can respectively reinforce the structural strength outside the first main journal and the second main journal, so that the abrasion of the first main journal and the second main journal can be reduced, and the phenomenon that the first main journal and the second main journal are fractured due to abrasion is avoided.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, and in particular to a crankshaft assembly with a reinforced main journal structure. Background Technology

[0002] The crankshaft is the main rotating component of an engine or generator. After the connecting rod is installed, the reciprocating motion of the connecting rod can be converted into a cyclic rotational motion. In the existing crankshaft assembly, the point of force application during turning and the point of application of clamping force are relatively far apart, which makes the left and right sides of the crankshaft assembly prone to shaking, seriously affecting the machining accuracy of the eccentric connecting rod journal of the crankshaft assembly.

[0003] The prior art CN202732658U discloses a crankshaft with axial opening slots for positioning at the same position of multiple discs. When turning the eccentric connecting rod neck, the nearest principle can be used for clamping, which can greatly shorten the distance between the eccentric connecting rod neck to be turned and the clamping part of the fixture, thereby improving the machining accuracy of the eccentric connecting rod neck.

[0004] However, the aforementioned crankshaft assembly experiences significant mechanical wear and tear over long periods of use, making the main journal of the crankshaft assembly prone to breakage. Utility Model Content

[0005] The purpose of this utility model is to provide a crankshaft assembly with a reinforced main journal structure, which aims to solve the technical problem that the main journal of the existing crankshaft assembly is prone to breakage due to the serious mechanical wear accumulated during long-term use.

[0006] To achieve the above objectives, this utility model provides a crankshaft assembly with a reinforced main journal structure, including a first main journal, a connecting mechanism, a second main journal, a gear, a reinforcing sleeve, and a reinforcing block. The first main journal and the second main journal are connected by the connecting mechanism and are coaxially arranged. The gear is located on the side of the first main journal near the connecting mechanism. The reinforcing sleeve is located on the side of the first main journal away from the second main journal. The reinforcing block is located on the side of the second main journal away from the first main journal.

[0007] The first main journal includes a first journal and a second journal. The second journal is located on the side of the first journal away from the reinforcing block. The reinforcing sleeve and the gear are arranged sequentially from left to right on the outside of the second journal.

[0008] The connecting mechanism includes a crank and a connecting rod journal. The crank is located on the side of the first journal away from the second journal. There are two cranks, and the connecting rod journal is located between the two cranks.

[0009] The connecting rod journal and the crank have an arc-shaped groove, which is formed by rounded corner rolling.

[0010] The second main journal includes a third journal and a fourth journal. The third journal is located on the side of the crank away from the first journal, and the fourth journal is located on the side of the third journal away from the crank. The reinforcing block is provided on the outside of the fourth journal.

[0011] This utility model discloses a crankshaft assembly with a reinforced main journal structure. The first and second main journals are connected by a connecting mechanism and are coaxially arranged. A gear is disposed on the outside of the first main journal near the connecting mechanism. A reinforcing sleeve is disposed on the outside of the first main journal away from the second main journal. A reinforcing block is disposed on the outside of the second main journal away from the first main journal. By respectively providing the reinforcing sleeve and the reinforcing block on the outside of the first and second main journals, the reinforcing sleeve and the reinforcing block can respectively enhance the structural strength of the outside of the first and second main journals, thereby reducing wear on the first and second main journals and preventing breakage due to wear. This solves the technical problem that existing crankshaft assemblies suffer from severe accumulated mechanical wear during long-term use, leading to easy breakage of the main journals. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0013] Figure 1 This is a schematic diagram of the overall structure of the crankshaft assembly with a reinforced main journal structure according to the first embodiment of this utility model.

[0014] Figure 2 This is a cross-sectional schematic diagram along the connecting rod journal of the crankshaft assembly with a reinforced main journal structure according to the first embodiment of this utility model.

[0015] Figure 3 This is the first embodiment of the crankshaft assembly with a reinforced main journal structure of this utility model. Figure 2 Enlarged view of point A.

[0016] In the diagram: 101-Gear, 102-Reinforcing sleeve, 103-Reinforcing block, 104-First journal, 105-Second journal, 106-Crank, 107-Connecting rod journal, 108-Third journal, 109-Fourth journal, 110-Threaded hole, 111-Arc groove. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0018] First Embodiment

[0019] Please see Figures 1-3 , Figure 1 This is a schematic diagram of the overall structure of the crankshaft assembly with a reinforced main journal structure according to the first embodiment of this utility model. Figure 2 This is a cross-sectional schematic diagram along the connecting rod journal 107 of the crankshaft assembly with a reinforced main journal structure according to the first embodiment of this utility model. Figure 3 This is the first embodiment of the crankshaft assembly with a reinforced main journal structure of this utility model. Figure 2 Enlarged view of point A.

[0020] This utility model provides a crankshaft assembly with a reinforced main journal structure: including a first main journal, a connecting mechanism, a second main journal, a gear 101, a reinforcing sleeve 102, and a reinforcing block 103. The first main journal includes a first journal 104 and a second journal 105. The connecting mechanism includes a crank 106 and a connecting rod journal 107. The second main journal includes a third journal 108 and a fourth journal 109. This solution solves the problem that the crankshaft assembly, during prolonged use, suffers from severe accumulated mechanical wear, leading to a high risk of main journal breakage. Therefore, this solution can be applied to various crankshaft assembly usage scenarios.

[0021] In this embodiment, by using the connecting mechanism to connect the first main journal and the second main journal, and connecting the connecting mechanism to the piston rod of the internal combustion engine, the reciprocating motion of the piston rod can be converted into the rotational motion of the first main journal and the second main journal. By providing the reinforcing sleeve 102 and the reinforcing block 103 on the outside of the first main journal and the second main journal respectively, the reinforcing sleeve 102 and the reinforcing block 103 can respectively strengthen the structural strength of the outside of the first main journal and the second main journal, thereby reducing the wear of the first main journal and the second main journal, and thus avoiding the breakage of the first main journal and the second main journal due to wear. This solves the technical problem that the existing crankshaft assembly is prone to breakage of the main journal due to serious accumulated mechanical wear during long-term use.

[0022] The first main journal and the second main journal are connected by the connecting mechanism. The first main journal and the second main journal are coaxially arranged. The gear 101 is located on the outside of the first main journal near the connecting mechanism. The reinforcing sleeve 102 is located on the outside of the first main journal away from the second main journal. The reinforcing block 103 is located on the outside of the second main journal away from the first main journal. By using the connecting mechanism to connect the first main journal and the second main journal, and connecting the connecting mechanism to the piston rod of the internal combustion engine, the up-and-down reciprocating motion of the piston rod can be converted into the motion of the first main journal. The rotational movement of the first and second main journals is achieved by providing the gear 101 outside the first main journal, thereby transmitting power to the workpiece element. By providing the reinforcing sleeve 102 and the reinforcing block 103 outside the first and second main journals respectively, the reinforcing sleeve 102 and the reinforcing block 103 can respectively strengthen the structural strength of the first and second main journals, thereby reducing the wear of the first and second main journals and preventing them from breaking due to wear.

[0023] Secondly, the second journal 105 is disposed on the side of the first journal 104 away from the reinforcing block 103. The reinforcing sleeve 102 and the gear 101 are arranged sequentially from left to right on the outside of the second journal 105. The end face of the second journal 105 has a threaded hole 110, and the threaded hole 110 is coaxially disposed with the second journal 105, so that the second journal 105 can be connected to other workpieces through the threaded hole 110.

[0024] Furthermore, the crank 106 is located on the side of the first journal 104 away from the second journal 105. There are two cranks 106, and the connecting rod journal 107 is provided between the two cranks 106. The connecting rod journal 107 and the crank 106 have an arc-shaped groove 111. The arc-shaped groove 111 is formed by rounded corner rolling. By providing the arc-shaped groove 111, stress concentration between the connecting rod journal 107 and the crank 106 can be avoided, thereby increasing the connection strength between the connecting rod journal 107 and the crank 106.

[0025] Finally, the third journal 108 is disposed on the side of the crank 106 away from the first journal 104, and the fourth journal 109 is disposed on the side of the third journal 108 away from the crank 106. The fourth journal 109 is provided with the reinforcing block 103 and external threads, so that the fourth journal 109 can be connected to other workpieces through the external threads.

[0026] In using this utility model, the second journal 105 is connected to other workpieces through the threaded hole 110 on the end face of the second journal 105, and the fourth journal 109 is connected to other workpieces through the external thread on the outside of the fourth journal 109. Two cranks 106 are arranged between the first main journal and the second main journal, and a connecting rod journal 107 is arranged between the two cranks 106. The connecting rod journal 107 is then connected to the piston rod of the internal combustion engine, thereby converting the reciprocating motion of the piston rod into the rotational motion of the first main journal and the second main journal. This is achieved through the threaded hole 110 on the end face of the second journal. The gear 101 outside the main journal transmits power to the workpiece element. At this time, the arc-shaped groove 111 between the connecting rod journal 107 and the crank 106 can avoid stress concentration between the connecting rod journal 107 and the crank 106, thereby increasing the connection strength between the connecting rod journal 107 and the crank 106. When the first main journal and the second main journal rotate, the reinforcing sleeve 102 and the reinforcing block 103 can respectively strengthen the structural strength outside the first main journal and the second main journal, thereby reducing the wear of the first main journal and the second main journal during rotation.

[0027] In summary, by using the connecting mechanism to connect the first main journal and the second main journal, and connecting the connecting mechanism to the piston rod of the internal combustion engine, the reciprocating motion of the piston rod can be converted into the rotational motion of the first main journal and the second main journal. By providing the reinforcing sleeve 102 and the reinforcing block 103 on the outside of the first main journal and the second main journal respectively, the reinforcing sleeve 102 and the reinforcing block 103 can respectively strengthen the structural strength of the first main journal and the second main journal, thereby reducing the wear of the first main journal and the second main journal, and thus avoiding the breakage of the first main journal and the second main journal due to wear. This solves the technical problem that the existing crankshaft assembly is prone to breakage of the main journal due to serious accumulated mechanical wear during long-term use.

[0028] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A crankshaft assembly with a reinforced main journal structure, characterized in that: It includes a first main journal, a connecting mechanism, a second main journal, a gear, a reinforcing sleeve, and a reinforcing block. The first main journal and the second main journal are connected by the connecting mechanism and are coaxially arranged. The gear is located on the outside of the first main journal near the connecting mechanism. The reinforcing sleeve is located on the outside of the first main journal away from the second main journal. The reinforcing block is located on the outside of the second main journal away from the first main journal.

2. The crankshaft assembly with reinforced main journal structure as described in claim 1, characterized in that: The first main journal includes a first journal and a second journal. The second journal is located on the side of the first journal away from the reinforcing block. The reinforcing sleeve and the gear are arranged sequentially from left to right on the outside of the second journal.

3. The crankshaft assembly with reinforced main journal structure as described in claim 2, characterized in that: The connecting mechanism includes a crank and a connecting rod journal. The crank is located on the side of the first journal away from the second journal. There are two cranks, and the connecting rod journal is located between the two cranks.

4. The crankshaft assembly with reinforced main journal structure as described in claim 3, characterized in that: The connecting rod journal and the crank have an arc-shaped groove, which is formed by rounded corner rolling.

5. The crankshaft assembly with reinforced main journal structure as described in claim 3, characterized in that: The second main journal includes a third journal and a fourth journal. The third journal is located on the side of the crank away from the first journal, and the fourth journal is located on the side of the third journal away from the crank. The reinforcing block is provided outside the fourth journal.

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