Durable crankshaft

Abstract

The utility model relates to the technical field of crankshafts, and discloses a durable crankshaft which comprises a main journal, a crank and a connecting rod journal, an arc-shaped opening is formed in the crank, a protection mechanism used for protecting the connecting rod journal is arranged on the crank, a lubricating mechanism is arranged on the protection mechanism, the protection mechanism comprises a wear-resisting arc plate, and the wear-resisting arc plate is provided with a wear-resisting groove. According to the durable crankshaft, the two sets of wear-resistant arc plates are additionally arranged on the outer wall of the connecting rod journal, so that the connecting rod journal can be protected, the situation that the connecting rod excessively abrades the connecting rod journal in the operation process of the crankshaft is avoided, and the service life of the crankshaft is prolonged; the wear-resistant arc plate can be conveniently pulled out from the position between the connecting rod journal and the connecting rod by forming the arc-shaped opening, the replaced wear-resistant arc plate can be inserted into the position between the connecting rod journal and the connecting rod again, the wear-resistant arc plate can be replaced without disassembling the connecting rod, and later repair and maintenance are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshafts, in particular to a durable crankshaft. Background Art

[0002] The crankshaft is the most important component in the engine. It bears the force transmitted from the connecting rod and converts it into torque, which is output through the crankshaft and drives other accessories on the engine to work.

[0003] According to a crankshaft with a long service life disclosed (publication number: CN207715531U), in the above application, the wear caused by long-term work can be effectively avoided by setting a semi-annular sleeve block, and it can be detachably installed through a locking device, which is convenient for regular maintenance and replacement, thereby realizing the rational use of resources.

[0004] The device reduces the wear of the connecting rod on the connecting rod by adding a semi-annular sleeve block between the outer wall of the connecting rod and the connecting rod, so as to increase the service life of the crankshaft. However, when the semi-annular sleeve block is severely worn and needs to be replaced, since the semi-annular sleeve block is located on the surface of the connecting rod, the connecting rod needs to be disassembled to remove the semi-annular sleeve block, which is very troublesome and brings inconvenience to subsequent maintenance. Utility Model Content

[0005] The purpose of the utility model is to provide a durable crankshaft to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a durable crankshaft, comprising a main journal, a crank, and a connecting rod journal, wherein an arc-shaped opening is provided on the crank, and a protective mechanism for protecting the connecting rod journal is provided on the crank, and the connecting rod can be prevented from wearing the connecting rod journal by the protective mechanism, thereby improving the service life of the crankshaft, and a lubricating mechanism is provided on the protective mechanism, and the lubricating mechanism can be provided to lubricate the replaced wear-resistant arc plate and the connecting rod, so as to reduce the wear caused by the connecting rod and the wear-resistant arc plate, and improve the service life of the wear-resistant arc plate, and the protective mechanism comprises:

[0007] A wear-resistant arc plate, wherein the outer wall of the wear-resistant arc plate is fitted to the inner wall of the arc-shaped opening, and the outer wall of the wear-resistant arc plate is fitted to the outer wall of the connecting rod journal. A side plate is fixedly mounted on the side wall of the wear-resistant arc plate, and a limiting hole is provided on the side plate. The wear-resistant arc plate can be provided to prevent the connecting rod from causing excessive wear to the connecting rod journal;

[0008] A protrusion, the protrusion is fixedly mounted on the outer wall of the crank, the inner wall of the protrusion is slidably connected to a limit rod, one end of the limit rod is fixedly mounted with a limit block, and the other end of the limit rod is fitted in the limit hole, and the side plate can be limited by setting the limit rod to match the limit hole;

[0009] A spring is sleeved on the outer wall of the limiting rod, one end of the spring is fixedly mounted on the outer wall of the protrusion, and the other end of the spring is fixedly mounted on the outer wall of the limiting block. The limiting block can be pulled and reset by setting the spring.

[0010] Preferably, the lubrication mechanism comprises an oil groove, the oil groove is opened on the inner wall of the side plate, and the inner wall of the oil groove is slidably connected with a piston.

[0011] Preferably, a push rod is fixedly mounted on the outer wall of the piston, and one end of the push rod away from the piston passes through the side plate, extends to the inner wall of the limiting hole and fits with the limiting rod.

[0012] Preferably, a transverse groove is provided on the inner wall of the wear-resistant arc plate, and the transverse groove is communicated with the interior of the oil groove.

[0013] Preferably, the wear-resistant arc plate is provided with a plurality of through holes, the through holes being communicated with the interior of the transverse groove, and the lubricating oil can be discharged into the gap between the connecting rod and the wear-resistant arc plate by providing the through holes.

[0014] Preferably, the push rod is slidably connected to the penetration point of the side plate.

[0015] Compared with the prior art, the utility model provides a durable crankshaft with the following beneficial effects:

[0016] 1. The durable crankshaft can be protected by adding two sets of wear-resistant arc plates on the outer wall of the connecting rod journal to avoid excessive wear of the connecting rod on the connecting rod journal during the operation of the crankshaft, thereby increasing the service life of the crankshaft. The wear-resistant arc plate can be easily pulled out from between the connecting rod journal and the connecting rod by opening an arc-shaped opening, and the replaced wear-resistant arc plate can be inserted between the connecting rod journal and the connecting rod again. The wear-resistant arc plate can be replaced without disassembling the connecting rod, which is convenient for later repair and maintenance.

[0017] 2. The durable crankshaft pushes the limit rod into the limit hole through the limit block. At this time, the limit rod squeezes the push rod, so that the piston can slide inside the oil groove. At this time, the piston can be used to squeeze the lubricating oil in the oil groove and the transverse groove through the through hole, so that the lubricating oil is discharged into the gap between the connecting rod and the wear-resistant arc plate, so that the replaced wear-resistant arc plate and the connecting rod can be lubricated to reduce the wear caused by the connecting rod and the wear-resistant arc plate and increase the service life of the wear-resistant arc plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 3This is a schematic diagram of the overall explosion structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the overall structure of the wear-resistant arc plate of the utility model;

[0022] Figure 5 It is a schematic diagram of the cross-sectional structure of the wear-resistant arc plate of the utility model from top view;

[0023] Figure 6 For this utility model Figure 2 A is an enlarged structural diagram of FIG.

[0024] In the figure: 1. main journal; 2. crank; 3. connecting rod journal; 4. arc-shaped mouth; 5. protection mechanism; 51. wear-resistant arc plate; 52. bump; 53. spring; 54. side plate; 55. limit hole; 56. limit rod; 57. limit block; 6. lubrication mechanism; 61. oil groove; 62. piston; 63. push rod; 64. transverse groove; 65. through hole. DETAILED DESCRIPTION

[0025] like Figure 1-Figure 6 As shown, the utility model provides a technical solution: a durable crankshaft, comprising a main journal 1, a crank 2, and a connecting rod journal 3. An arc-shaped opening 4 is provided on the crank 2. The arc-shaped opening 4 can facilitate the insertion of a wear-resistant arc plate 51 into a gap between the connecting rod journal 3 and the connecting rod. A protective mechanism 5 for protecting the connecting rod journal 3 is provided on the crank 2. The protective mechanism 5 can prevent the connecting rod from wearing the connecting rod journal 3, thereby improving the service life of the crankshaft. A lubrication mechanism 6 is provided on the protective mechanism 5. The lubrication mechanism 6 can lubricate the replaced wear-resistant arc plate 51 and the connecting rod, thereby reducing the wear caused by the connecting rod and the wear-resistant arc plate 51, thereby improving the service life of the wear-resistant arc plate 51.

[0026] The above-mentioned protection mechanism 5 includes a wear-resistant arc plate 51, a protrusion 52, a spring 53, a side plate 54, a limiting hole 55, a limiting rod 56, and a limiting block 57; the outer wall of the wear-resistant arc plate 51 is fitted on the inner wall of the arc-shaped opening 4, and the outer wall of the wear-resistant arc plate 51 is fitted on the outer wall of the connecting rod journal 3. By adding two groups of wear-resistant arc plates 51 on the outer wall of the connecting rod journal 3, it can be protected to prevent the connecting rod from causing excessive wear to the connecting rod journal 3 during the operation of the crankshaft, thereby improving the service life of the crankshaft. The side wall of the wear-resistant arc plate 51 is fixedly installed with a side plate 54, and a limiting hole 55 is provided on the side plate 54. The protrusion 52 is fixedly installed on the outer wall of the crank 2, and the inner wall of the protrusion 52 is slidably connected to the limiting rod 56. One end of the limiting rod 56 is fixedly installed A limit block 57 is installed, and the other end of the limit rod 56 is fitted in the limit hole 55. The limit rod 56 is pulled by the limit block 57 to move it out of the limit hole 55. At this time, the wear-resistant arc plate 51 can be pulled outward through the side plate 54 to make it detach from the arc-shaped mouth 4, thereby facilitating the replacement of the wear-resistant arc plate 51. The spring 53 is sleeved on the outer wall of the limit rod 56, one end of the spring 53 is fixedly mounted on the outer wall of the protrusion 52, and the other end of the spring 53 is fixedly mounted on the outer wall of the limit block 57. The limit block 57 is released. At this time, the limit block 57 can be pulled by the elasticity of the spring 53, so that the limit block 57 pushes the limit rod 56 into the interior of the limit hole 55, and the side plate 54 can be limited by using the limit rod 56 to cooperate with the limit hole 55.

[0027] The lubricating mechanism 6 comprises an oil groove 61, a piston 62, a push rod 63, a transverse groove 64, and a through hole 65; the oil groove 61 is provided on the inner wall of the side plate 54, and the inner wall of the oil groove 61 is slidably connected with the piston 62. The piston 62 can be used to squeeze the lubricating oil in the oil groove 61 and the transverse groove 64 through the through hole 65, so that the lubricating oil is discharged into the gap between the connecting rod and the wear-resistant arc plate 51, so that the replaced wear-resistant arc plate 51 and the connecting rod can be lubricated. The outer wall of the piston 62 is fixedly mounted with a push rod 63, and the end of the push rod 63 away from the piston 62 passes through the side plate 54 and extends to the limit hole 55. The inner wall of the wear-resistant arc plate 51 is fitted with the limit rod 56, and the push rod 63 is slidably connected with the penetration point of the side plate 54. When the spring 53 pulls the limit block 57 to push the limit rod 56 into the inside of the limit hole 55, the limit rod 56 will squeeze the push rod 63, so that the push rod 63 pushes the piston 62, and the piston 62 slides inside the oil groove 61. The inner wall of the wear-resistant arc plate 51 is provided with a transverse groove 64, and the transverse groove 64 is connected with the inside of the oil groove 61. Lubricating oil is stored in the transverse groove 64 and the inside of the oil groove 61. A plurality of through holes 65 are provided on the wear-resistant arc plate 51, and the through holes 65 are connected with the inside of the transverse groove 64.

[0028] Working principle: By adding two sets of wear-resistant arc plates 51 on the outer wall of the connecting rod journal 3, it can be protected to prevent the connecting rod from causing excessive wear on the connecting rod journal 3 during the operation of the crankshaft, thereby increasing the service life of the crankshaft. When the wear-resistant arc plate 51 is worn and needs to be replaced, the limit rod 56 is pulled by the limit block 57 to move it out of the limit hole 55. At the same time, the limit block 57 will stretch the spring 53. When the limit rod 56 is completely moved out of the limit hole 55, the wear-resistant arc plate 51 can be pulled by the side plate 54 to make the wear-resistant arc plate 51 slide out from the inner wall of the arc-shaped opening 4 to the outside of the crank 2. At this time, the wear-resistant arc plate 51 can be pulled out from between the connecting rod journal 3 and the connecting rod. , and then insert the new wear-resistant arc plate 51 into the interior of the arc-shaped opening 4, so that the wear-resistant arc plate 51 fits against the outer wall of the connecting rod journal 3, and the side plate 54 fits against the outer wall of the crank 2, and then loosens the limit block 57. At this time, the limit block 57 can be pulled by the elasticity of the spring 53, so that the limit block 57 pushes the limit rod 56 into the interior of the limit hole 55, and the side plate 54 can be limited by using the limit rod 56 in conjunction with the limit hole 55, so that the wear-resistant arc plate 51 can be stably inserted between the connecting rod journal 3 and the connecting rod, thereby completing the replacement of the wear-resistant arc plate 51, and the wear-resistant arc plate 51 can be replaced without disassembling the connecting rod, which is convenient for later repair and maintenance.

[0029] When the spring 53 pulls the limit block 57 to push the limit rod 56 into the limit hole 55, the limit rod 56 will squeeze the push rod 63, so that the push rod 63 pushes the piston 62, and the piston 62 slides inside the oil groove 61. At this time, the piston 62 can be used to squeeze the lubricating oil inside the oil groove 61 and the transverse groove 64 through the through hole 65, so that the lubricating oil is discharged into the gap between the connecting rod and the wear-resistant arc plate 51, so that the replaced wear-resistant arc plate 51 and the connecting rod can be lubricated to reduce the wear caused by the connecting rod and the wear-resistant arc plate 51, and increase the service life of the wear-resistant arc plate 51.

[0030] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A durable crankshaft, comprising a main journal (1), a crank (2), and a connecting rod journal (3), characterized in that: The crank (2) is provided with an arc-shaped opening (4), the crank (2) is provided with a protection mechanism (5) for protecting the connecting rod journal (3), the protection mechanism (5) is provided with a lubrication mechanism (6), and the protection mechanism (5) comprises: A wear-resistant arc plate (51), wherein the outer wall of the wear-resistant arc plate (51) is in contact with the inner wall of the arc-shaped opening (4), the outer wall of the wear-resistant arc plate (51) is in contact with the outer wall of the connecting rod journal (3), a side plate (54) is fixedly mounted on the side wall of the wear-resistant arc plate (51), and a limiting hole (55) is provided on the side plate (54); A convex block (52), wherein the convex block (52) is fixedly mounted on the outer wall of the crank (2), the inner wall of the convex block (52) is slidably connected to a limiting rod (56), one end of the limiting rod (56) is fixedly mounted with a limiting block (57), and the other end of the limiting rod (56) is fitted in the limiting hole (55); A spring (53), wherein the spring (53) is sleeved on the outer wall of the limiting rod (56), one end of the spring (53) is fixedly mounted on the outer wall of the protrusion (52), and the other end of the spring (53) is fixedly mounted on the outer wall of the limiting block (57).

2. A durable crankshaft according to claim 1, characterized in that: The lubrication mechanism (6) comprises an oil groove (61), the oil groove (61) is opened on the inner wall of the side plate (54), and the inner wall of the oil groove (61) is slidably connected with a piston (62).

3. A durable crankshaft according to claim 2, characterized in that: A push rod (63) is fixedly mounted on the outer wall of the piston (62), and one end of the push rod (63) away from the piston (62) passes through the side plate (54) and extends to the inner wall of the limiting hole (55) and fits with the limiting rod (56).

4. A durable crankshaft according to claim 1, characterized in that: The inner wall of the wear-resistant arc plate (51) is provided with a transverse groove (64), and the transverse groove (64) is communicated with the interior of the oil groove (61).

5. A durable crankshaft according to claim 1, characterized in that: The wear-resistant arc plate (51) is provided with a plurality of through holes (65), and the through holes (65) are connected to the interior of the transverse groove (64).

6. A durable crankshaft according to claim 3, characterized in that: The push rod (63) is slidably connected to the penetration point of the side plate (54).

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