Spindle of diesel engine

Abstract

The utility model discloses a main shaft of a diesel engine, and relates to the technical field of combustion engines. A diesel engine spindle comprises a spindle body, a limiting device is arranged on the spindle body and comprises an oil baffle plate and a fixed sliding block, one end of the fixed sliding block is fixedly connected with the outer wall of one end of the oil baffle plate, a fixed sliding block groove is formed in one end of the spindle body, and the outer wall of the fixed sliding block is slidably connected with the interior of the fixed sliding block groove. Two fixing bolt grooves are formed in the outer wall of the end, close to the oil baffle plate, of the main shaft, fixing bolts in a limiting device are screwed to rotate so that the fixing bolts can move upwards to drive a limiting block to move upwards to enter a second limiting block groove, and then the other end of the limiting block is separated from the interior of a first limiting block groove; and the oil baffle plate and the fixed sliding block can be taken down from the main shaft by pulling the oil baffle plate, so that the whole main shaft is prevented from being disassembled when the oil baffle plate is maintained and overhauled, and the maintenance and overhaul efficiency of the oil baffle plate is improved while the efficiency of workers is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of combustion engines, and particularly relates to a main shaft of a diesel engine. Background Art

[0002] In mechanical terms, the main shaft of a diesel engine usually refers to a key component inside the engine, which undertakes the important task of converting the reciprocating motion of the piston into rotational motion. Specifically, the main shaft of a diesel engine is a core rotating part on the engine, with delicate design and powerful functions.

[0003] Among them, the main shaft is usually composed of multiple journal bearings, cranks, balance blocks, etc. The journal bearings are used to install bearings, and the cranks are connected to the connecting rods to achieve power conversion.

[0004] The existing main shaft of a diesel engine converts the reciprocating linear motion of the piston into its own rotational motion through a connecting rod. The oil baffle in the main shaft of the diesel engine forms an oil seal through the cooperation with the main shaft, which can effectively prevent the lubricating oil from flowing along the main shaft to the outside of the engine, thus keeping the inside of the engine clean and the normal circulation of the oil fluid. However, the oil baffle is usually welded together on the main shaft. When maintenance and repair of the oil baffle are required, workers need to use special tools to disassemble and assemble the entire main shaft for maintenance and repair. Such operation is complicated and difficult, thus reducing the practicability of the equipment. Content of the Utility Model

[0005] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and provide a main shaft of a diesel engine, which can solve the problem that the oil baffle is usually welded together on the main shaft. When maintenance and repair of the oil baffle are required, workers need to use special tools to disassemble and assemble the entire main shaft for maintenance and repair. Such operation is complicated and difficult, thus reducing the practicability of the equipment.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a main shaft of a diesel engine, including a main shaft, and a limiting device is arranged on the main shaft;

[0007] The limiting device includes an oil baffle and a fixed slider. One end of the fixed slider is fixedly connected to the outer wall of one end of the oil baffle. A fixed slider groove is opened at one end of the main shaft. The outer wall of the fixed slider is slidably connected to the inside of the fixed slider groove. Two fixed bolt grooves are opened on the outer wall of one end of the main shaft close to the oil baffle. Fixed bolts are threadedly connected to the inside of both fixed bolt grooves. Two second limiting block grooves are opened in the inside of the fixed slider groove;

[0008] Among them, limiting blocks are slidably connected to the inside of both second limiting block grooves. Rotating blocks are installed on the outer walls of one ends of both limiting blocks. First limiting block grooves are opened on the upper and lower outer walls of the fixed slider.

[0009] Preferably, one end of each fixing bolt close to the limiting block extends threadedly into the interior of the second limiting block groove and is respectively rotatably connected to the corresponding rotating block;

[0010] Wherein, the outer walls of one ends of the two limiting blocks close to the fixed slider are respectively in contact with the inner walls of the corresponding first limiting block grooves.

[0011] Preferably, an oil injection hole is formed in the outer wall of the main shaft;

[0012] Wherein, guide grooves are formed in the inner walls on both sides of the fixed slider groove.

[0013] Preferably, the outer walls on both sides of the fixed slider are respectively slidably connected to the interiors of the corresponding guide grooves.

[0014] Preferably, a second connecting thread is formed in the outer wall of one end of the oil baffle away from the main shaft;

[0015] Wherein, a connecting shaft is arranged outside the main shaft.

[0016] Preferably, one end of the connecting shaft is threadedly connected to the interior of the second connecting thread;

[0017] Wherein, a first connecting thread is formed in the end of the connecting shaft away from the main shaft.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] 1. For the main shaft of this diesel engine, by turning the fixing bolt in the limiting device to rotate and move it upward, the limiting block is driven to move upward into the interior of the second limiting block groove. Then, the other end of the limiting block is disengaged from the interior of the first limiting block groove. Then, by pulling the oil baffle, the oil baffle and the fixed slider can be removed from the main shaft. In this way, it is avoided to disassemble the entire main shaft when maintaining and overhauling the oil baffle, effectively improving the efficiency of the staff and the maintenance and overhaul efficiency of the oil baffle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following further illustrates the present utility model in conjunction with the drawings and embodiments:

[0021] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0022] Figure 2 is a structural schematic diagram of the exterior of the oil baffle of the present utility model;

[0023] Figure 3 is a structural schematic diagram of the interior of the fixed slider of the present utility model.

[0024] Reference numerals: 1, main shaft; 2, oil injection hole; 3, fixing bolt groove; 4, fixing bolt; 5, first connecting thread; 6, connecting shaft; 7, oil baffle; 8, second connecting thread; 9, rotating block; 10, guiding groove; 11, first limiting block groove; 12, limiting block; 13, fixing slider; 14, fixing slider groove; 15, second limiting block groove. Detailed implementation manners

[0025] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention. However, it should not be construed as a limitation on the protection scope of the present invention.

[0026] In the description of the present invention, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the present invention.

[0027] In the description of the present invention, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0028] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0029] Please refer to Figures 1-3 , the present invention provides a technical solution: a main shaft of a diesel engine, including a main shaft 1;

[0030] A limiting device is arranged on the main shaft 1;

[0031] The limiting device includes an oil baffle 7 and a fixed slider 13. One end of the fixed slider 13 is fixedly connected to the outer wall of one end of the oil baffle 7. A fixed slider groove 14 is provided at one end of the main shaft 1. The outer wall of the fixed slider 13 is slidably connected to the inside of the fixed slider groove 14. Two fixed bolt grooves 3 are provided on the outer wall of the main shaft 1 near the oil baffle 7. Fixed bolts 4 are threadedly connected to the inside of both of the two fixed bolt grooves 3. Two second limiting block grooves 15 are provided in the inside of the fixed slider groove 14. Limiting blocks 12 are slidably connected to the inside of both of the two second limiting block grooves 15. Rotating blocks 9 are installed on the outer walls of one ends of both of the two limiting blocks 12. The ends of the fixed bolts 4 close to the limiting blocks 12 are threadedly extended into the inside of the second limiting block grooves 15 and are respectively rotatably connected to the corresponding rotating blocks 9. First limiting block grooves 11 are provided on the upper and lower outer walls of the fixed slider 13. The outer walls of one ends of both of the two limiting blocks 12 close to the fixed slider 13 are respectively in contact with the inner walls of the corresponding first limiting block grooves 11.

[0032] Among them, an oil injection hole 2 is provided on the outer wall of the main shaft 1. Guide grooves 10 are provided on the inner walls on both sides of the fixed slider groove 14. The outer walls on both sides of the fixed slider 13 are respectively slidably connected to the inside of the corresponding guide grooves 10. A second connection thread 8 is provided on the outer wall of the end of the oil baffle 7 away from the main shaft 1. A connecting shaft 6 is provided outside the main shaft 1. One end of the connecting shaft 6 is threadedly connected to the inside of the second connection thread 8. A first connection thread 5 is provided at the end of the connecting shaft 6 away from the main shaft 1.

[0033] Further, when using this device, first install and fix the main shaft 1 on the crankshaft main bearing seat through the first connection thread 5 provided on the connecting shaft 6. Then, through the oil seal formed at the mating part of the oil baffle 7 and the main shaft 1, it can effectively prevent the lubricating oil from flowing along the main shaft to the outside of the engine, thereby keeping the inside of the engine clean and the normal circulation of the oil fluid. Then, when it is necessary to disassemble and assemble the oil baffle 7, turn the fixed bolt 4 to rotate it and move it upward to drive the limiting block 12 to move upward into the inside of the second limiting block groove 15. Then, make the other end of the limiting block 12 disengage from the inside of the first limiting block groove 11. Then, pull the oil baffle 7 to remove the oil baffle 7 and the fixed slider 13 from the main shaft 1.

[0034] By turning and fixing the bolt 4 in the limiting device to rotate it upwards, the limiting block 12 is driven to move upwards and enter the inside of the second limiting block groove 15. Then, the other end of the limiting block 12 is disengaged from the inside of the first limiting block groove 11. Then, by pulling the oil baffle 7, the oil baffle 7 and the fixed slider 13 can be removed from the main shaft 1. This avoids disassembling the entire main shaft 1 when maintaining and overhauling the oil baffle 7, effectively improving the efficiency of the staff and at the same time improving the maintenance and overhaul efficiency of the oil baffle 7. As part of the engine oil passage, the oil injection hole 2 facilitates the introduction of engine oil into the main shaft 1 and related components, enabling the engine oil to cover and lubricate the surface of the main shaft journal, reducing the direct contact and friction between metals, and thus extending the service life of the main shaft 1.

[0035] Working principle: First, the main shaft 1 is installed and fixed on the crankshaft main bearing seat through the first connecting thread 5 provided on the connecting shaft 6. Then, through the oil seal formed at the mating part of the oil baffle 7 and the main shaft 1, the lubricating oil can be effectively prevented from flowing along the main shaft to the outside of the engine, thereby keeping the inside of the engine clean and ensuring the normal circulation of the oil. Then, when it is necessary to disassemble and assemble the oil baffle 7, turn and fix the bolt 4 to rotate it upwards, driving the limiting block 12 to move upwards and enter the inside of the second limiting block groove 15. Then, the other end of the limiting block 12 is disengaged from the inside of the first limiting block groove 11. Then, by pulling the oil baffle 7, the oil baffle 7 and the fixed slider 13 can be removed from the main shaft 1.

[0036] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the technical field, various changes can be made without departing from the gist of the present invention.

Claims

1. A main shaft of a diesel engine, comprising a main shaft (1), characterized in that: A limiting device is provided on the main shaft (1); The limiting device includes an oil baffle (7) and a fixed slider (13). One end of the fixed slider (13) is fixedly connected to the outer wall of one end of the oil baffle (7). A fixed slider groove (14) is provided at one end of the main shaft (1). The outer wall of the fixed slider (13) is slidably connected to the inside of the fixed slider groove (14). Two fixing bolt grooves (3) are provided on the outer wall of the main shaft (1) near the oil baffle (7). Fixing bolts (4) are threadedly connected to the inside of the two fixing bolt grooves (3). Two second limiting block grooves (15) are provided inside the fixed slider groove (14); Among them, limiting blocks (12) are slidably connected to the inside of the two second limiting block grooves (15). Rotating blocks (9) are installed on the outer walls of one ends of the two limiting blocks (12). First limiting block grooves (11) are provided on the upper and lower outer walls of the fixed slider (13).

2. The main shaft of a diesel engine according to claim 1, characterized in that: One ends of the fixing bolts (4) close to the limiting blocks (12) are threadedly extended into the inside of the second limiting block grooves (15) and are respectively rotatably connected to the corresponding rotating blocks (9); Among them, the outer walls of one ends of the two limiting blocks (12) close to the fixed slider (13) are respectively in contact with the inner walls of the corresponding first limiting block grooves (11).

3. A main shaft of a diesel engine according to claim 1, characterized in that: An oil injection hole (2) is provided on the outer wall of the main shaft (1); Among them, guide grooves (10) are provided on the inner walls on both sides of the fixed slider groove (14).

4. A main shaft of a diesel engine according to claim 1, characterized in that: The outer walls on both sides of the fixed slider (13) are respectively slidably connected to the inside of the corresponding guide grooves (10).

5. A main shaft of a diesel engine according to claim 1, characterized in that: A second connection thread (8) is provided on the outer wall of the end of the oil baffle (7) away from the main shaft (1); Among them, a connecting shaft (6) is provided outside the main shaft (1).

6. A main shaft of a diesel engine according to claim 5, characterized in that: One end of the connecting shaft (6) is threadedly connected to the inside of the second connection thread (8); Among them, a first connection thread (5) is provided at the end of the connecting shaft (6) away from the main shaft (1).

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