High-strength wear-resistant crankshaft

Abstract

The utility model belongs to the technical field of engines, and particularly relates to a high-strength wear-resistant crankshaft which comprises a main shaft, cranks and connecting rod journals, the cranks are arranged on the main shaft at equal intervals, the connecting rod journals are fixed on the cranks, oil outlet holes are connected to the surfaces of the connecting rod journals in a penetrating mode, and oil storage rings are movably connected to the surfaces of the two ends of the main shaft in an inserted mode. Shaft seals are arranged on the two sides of the oil storage ring, the shaft seals are connected with the main shaft in an inserted mode, oil guide pipes are arranged in inner cavities of the main shaft, the crank and the connecting rod shaft neck, the oil guide pipes are symmetrically arranged, the ends of the oil guide pipes are connected with the oil storage ring, and an oil injection connecting nozzle is arranged on the surface of the oil storage ring and connected with the oil storage ring in a communicated mode. Lubricating oil is injected into the oil storage ring through the oil injection connecting nozzle, oil is guided into the oil outlet hole through the oil guide pipes, the oil guide pipes are symmetrically arranged, the oil guide distance can be reduced, the oil can be evenly discharged from the oil outlet hole, and the lubricating effect on the connecting rod journal can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to a high-strength wear-resistant crankshaft. Background Art

[0002] The main rotating part of the engine, after the connecting rod is installed, it can take over the up and down (reciprocating) motion of the connecting rod and turn it into a circular (rotating) motion. It is an important part of the engine, and its material is made of carbon structural steel or ductile iron. There are two important parts: the main journal and the connecting rod journal (and others). The main journal is installed on the cylinder block, the connecting rod journal is connected to the big end hole of the connecting rod, and the small end hole of the connecting rod is connected to the cylinder piston. It is a typical crank slider mechanism. The lubrication of the crankshaft mainly refers to the lubrication of the big end bearing of the connecting rod and the crankshaft connecting rod journal and the lubrication of the fixed points at both ends. The rotation of the crankshaft is the power source of the engine. It is also the source of power for the entire mechanical system.

[0003] The invention patent with the current patent publication number CN204458787U discloses a crankshaft structure, which includes a crankshaft, and the crankshaft includes at least two crankshaft bodies connected together, and the crankshaft bodies are fixed together by connecting sleeves; the crankshaft body includes a first counterweight block, a second counterweight block and a bend that are connected as a whole; the bend is arranged between the first counterweight block and the second counterweight block, and the bend is installed on the edges of the first counterweight block and the second counterweight block; the central axes of the bends of two adjacent crankshaft bodies are located on different straight lines; the first counterweight block and the second counterweight block are provided with connecting ends for connecting the two crankshaft bodies together; the connecting ends are provided with connecting parts for interference installation in the connecting sleeve.

[0004] During operation of the existing crankshaft, the connecting rod journal and the bearing bracket are lubricated with lubricating oil. When the crankshaft rotates at high speed, the temperature of the oil film formed at the connection between the connecting rod journal and the bearing increases, which will accelerate the loss of lubricating oil and cause increased wear at the connection between the connecting rod journal and the bearing, affecting the service life of the crankshaft. In order to solve the above problems, a high-strength and wear-resistant crankshaft is proposed in this application. Utility Model Content

[0005] (I) Purpose of the utility model

[0006] In order to solve the technical problems existing in the background technology, the utility model proposes a high-strength and wear-resistant crankshaft. Lubricating oil is injected into the oil storage ring through the oil filling connection nozzle, and the oil is guided into the oil outlet hole through the oil guide pipe. The oil guide pipe is symmetrically arranged to reduce the oil diversion distance, so that the oil can be evenly discharged from the oil outlet hole, which can improve the lubrication effect on the connecting rod journal to solve the problems raised in the background technology.

[0007] (II) Technical solution

[0008] In order to solve the above technical problems, the utility model provides a high-strength wear-resistant crankshaft, comprising a main shaft, a crank and a connecting rod journal, wherein the crank is equidistantly arranged on the main shaft, the connecting rod journal is fixed on the crank, and the surface of the connecting rod journal is penetrated and connected with an oil outlet hole;

[0009] The surfaces of both ends of the main shaft are movably connected with oil storage rings, and shaft seals are arranged on both sides of the oil storage rings. The shaft seals are connected with the main shaft.

[0010] The inner cavities of the main shaft, crank and connecting rod journal are provided with oil guide pipes, the oil guide pipes are symmetrically arranged, and the ends of the oil guide pipes are connected to the oil storage rings.

[0011] Preferably, an oil injection connection nozzle is provided on the surface of the oil storage ring, and the oil injection connection nozzle is conductively connected to the oil storage ring.

[0012] Preferably, fixed plates are provided on both end surfaces of the main shaft, and one side surface of the oil storage ring abuts against the fixed plates.

[0013] Preferably, both end surfaces of the main shaft are provided with external threads, and a movable disk is threadedly connected to the external threads.

[0014] Preferably, the movable plate abuts against a side surface of the oil storage ring away from the fixed plate.

[0015] Preferably, one end of the main shaft is fixedly connected with a gear plate, and the gear plate is located on one side of the oil storage ring.

[0016] Preferably, a threaded connection seat is provided on the bottom surface of the oil storage ring, and the bottom of the oil storage ring is connected to a supporting fixing seat via the threaded connection seat.

[0017] The above technical solution of the utility model has the following beneficial technical effects:

[0018] 1. In the utility model, both ends of the oil storage ring are connected to the main shaft through the shaft seal, the shaft seal can seal the connection between the oil storage ring and the main shaft, the lubricating oil is injected into the oil storage ring through the oil filling connection nozzle, the oil is guided into the oil outlet hole through the oil guide pipe, the oil guide pipe is symmetrically arranged, the oil guide distance can be reduced, the oil can be evenly discharged from the oil outlet hole, and the lubrication effect on the connecting rod journal can be improved.

[0019] 2. In the utility model, the movable disk is threadably connected to the external thread, the oil storage ring can be clamped by the movable disk and the fixed disk, and the bottom of the oil storage ring is fixed by a supporting fixing seat, so that the oil storage ring can be quickly installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the high-strength wear-resistant crankshaft of the utility model;

[0021] Figure 2It is a schematic diagram of the cross-sectional structure of the high-strength wear-resistant crankshaft of the utility model;

[0022] Figure 3 This is a schematic diagram of the movable disk structure of the high-strength wear-resistant crankshaft of the utility model;

[0023] Figure 4 The utility model is a schematic diagram of the oil storage ring structure of the high-strength wear-resistant crankshaft.

[0024] Reference numerals:

[0025] 1. Main shaft; 2. Crank; 3. Connecting rod journal; 4. Gear plate; 5. Oil outlet hole; 6. Oil storage ring; 7. Shaft seal; 8. Oil filling connection nozzle; 9. Oil guide pipe; 10. Fixed plate; 11. External thread; 12. Movable plate; 13. Threaded connection seat; 14. Support fixed seat. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0027] like Figure 1-4 As shown, the high-strength wear-resistant crankshaft proposed by the utility model comprises a main shaft 1, a crank 2 and a connecting rod journal 3, wherein the crank 2 is equidistantly arranged on the main shaft 1, the connecting rod journal 3 is fixed on the crank 2, and the surface of the connecting rod journal 3 is penetrated and connected with an oil outlet hole 5;

[0028] The surfaces of both ends of the main shaft 1 are movably connected with oil storage rings 6, and shaft seals 7 are arranged on both sides of the oil storage rings 6. The shaft seals 7 are connected to the main shaft 1.

[0029] The inner cavities of the main shaft 1 , the crank 2 and the connecting rod journal 3 are provided with oil guide pipes 9 , which are symmetrically arranged and whose ends are connected to the oil storage ring 6 .

[0030] It should be noted that both ends of the oil storage ring 6 are connected to the main shaft 1 through the shaft seal 7. The shaft seal 7 can seal the connection between the oil storage ring 6 and the main shaft 1. The lubricating oil is injected into the oil storage ring 6 through the oil filling connection nozzle 8. The oil is guided into the oil outlet hole 5 through the oil guide pipe 9. The oil guide pipe 9 is symmetrically arranged to reduce the diversion distance of the oil, so that the oil can be evenly discharged from the oil outlet hole 5, which can improve the lubrication effect on the connecting rod journal 3.

[0031] In this embodiment, if Figure 3 As shown, an oil injection connection nozzle 8 is provided on the surface of the oil storage ring 6 , and the oil injection connection nozzle 8 is conductively connected to the oil storage ring 6 .

[0032] It should be noted that lubricating oil can be injected into the oil storage ring 6 through the oil injection connection nozzle 8.

[0033] In this embodiment, if Figure 4 As shown, fixed plates 10 are provided on both end surfaces of the main shaft 1, and one side surface of the oil storage ring 6 abuts against the fixed plate 10. External threads 11 are provided on both end surfaces of the main shaft 1, and a movable plate 12 is threadedly connected to the external threads 11. The movable plate 12 abuts against one side surface of the oil storage ring 6 away from the fixed plate 10.

[0034] It should be noted that the movable disk 12 is threadably connected to the external thread 11 , and the oil storage ring 6 can be clamped by the movable disk 12 and the fixed disk 10 , so that the oil storage ring 6 can be quickly installed.

[0035] In this embodiment, if Figure 1 As shown, a gear plate 4 is fixedly connected to one end of the main shaft 1 , and the gear plate 4 is located on one side of the oil storage ring 6 .

[0036] It should be noted that the gear on the driving motor is meshed and connected with the gear plate 4, and the gear plate 4 can drive the crankshaft to rotate.

[0037] In this embodiment, if Figure 3 As shown, a threaded connection seat 13 is provided on the bottom surface of the oil storage ring 6 , and a supporting fixing seat 14 is connected to the bottom of the oil storage ring 6 via the threaded connection seat 13 .

[0038] It should be noted that the support fixing seat 14 is threadedly connected to the threaded connection seat 13 and fixed below the oil storage ring 6. The support fixing seat 14 can support and fix the oil storage ring 6 so that the oil storage ring 6 remains stationary when the main shaft 1 rotates.

[0039] The working principle and use process of the utility model are as follows: the oil storage ring 6 is sleeved on both ends of the main shaft 1, the movable disk 12 is threadedly connected to the external thread 11, the oil storage ring 6 can be clamped by the movable disk 12 and the fixed disk 10, the bottom of the oil storage ring 6 is fixed by the supporting fixing seat 14, the oil storage ring 6 can be quickly installed, the two ends of the oil storage ring 6 are connected to the main shaft 1 through the shaft seal 7, the shaft seal 7 can seal the connection between the oil storage ring 6 and the main shaft 1, the lubricating oil is injected into the oil storage ring 6 through the oil filling connection nozzle 8, the oil is guided into the oil outlet hole 5 through the oil guide pipe 9, the oil guide pipe 9 is symmetrically arranged, the oil diversion distance can be reduced, the oil can be evenly discharged from the oil outlet hole 5, and the lubrication effect on the connecting rod journal 3 can be improved.

[0040] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims or the equivalent forms of such scope and boundaries.

Claims

1. A high-strength wear-resistant crankshaft, comprising a main shaft (1), a crank (2) and a connecting rod journal (3), wherein the crank (2) is equidistantly arranged on the main shaft (1), and the connecting rod journal (3) is fixed on the crank (2), characterized in that: The surface of the connecting rod journal (3) is penetrated and connected with an oil outlet hole (5); The surfaces of both ends of the main shaft (1) are movably connected with oil storage rings (6), and shaft seals (7) are provided on both sides of the oil storage rings (6). The shaft seals (7) are connected to the main shaft (1) in a plug-in manner. The inner cavities of the main shaft (1), the crank (2) and the connecting rod journal (3) are provided with oil guide pipes (9), the oil guide pipes (9) are symmetrically arranged, and the ends of the oil guide pipes (9) are connected to the oil storage ring (6).

2. The high-strength wear-resistant crankshaft according to claim 1, characterized in that: An oil injection connection nozzle (8) is provided on the surface of the oil storage ring (6), and the oil injection connection nozzle (8) is conductively connected to the oil storage ring (6).

3. The high-strength wear-resistant crankshaft according to claim 2, characterized in that: Fixed disks (10) are provided on both end surfaces of the main shaft (1), and one side surface of the oil storage ring (6) abuts against the fixed disk (10).

4. The high-strength wear-resistant crankshaft according to claim 3, characterized in that: External threads (11) are provided on the surfaces of both ends of the main shaft (1), and a movable disk (12) is threadedly connected to the external threads (11).

5. The high-strength wear-resistant crankshaft according to claim 4, characterized in that: The movable plate (12) abuts against a surface of the oil storage ring (6) on one side away from the fixed plate (10).

6. The high-strength wear-resistant crankshaft according to claim 5, characterized in that: One end of the main shaft (1) is fixedly connected to a gear plate (4), and the gear plate (4) is located on one side of the oil storage ring (6).

7. The high-strength wear-resistant crankshaft according to claim 6, characterized in that: The bottom surface of the oil storage ring (6) is provided with a threaded connection seat (13), and the bottom of the oil storage ring (6) is connected to a supporting fixing seat (14) via the threaded connection seat (13).

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