Engine shaft assembly

Abstract

The utility model discloses an engine shaft assembly, and relates to the technical field of engines. An engine shaft assembly comprises a main shaft body, a limiting device is arranged on the main shaft body and comprises a crankshaft and a first connector, one end of the first connector is fixedly connected with one end of the crankshaft, a guide groove is formed in the outer wall of the end, away from the crankshaft, of the first connector, and four guide blocks are fixedly connected to the outer wall of one end of the main shaft body; a fixing bolt in the limiting device is screwed to rotate, so that the other end of the fixing bolt is separated from the interior of a second fixing bolt groove, then a limiting clamping plate is pulled to slide out of the interior of a first limiting clamping plate groove and the interior of a second limiting clamping plate groove, a limiting sliding block loses limiting, then a crankshaft is pulled, and the crankshaft can be taken down from the main shaft body. In this way, the crankshaft is convenient, simple and fast to disassemble and assemble, special tools are not needed, the workload of workers is effectively reduced, and meanwhile the practicability of equipment is improved.

Description

Technical Field

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

[0002] The engine shaft assembly is not a common direct expression. However, based on the understanding of the engine structure and function, in an engine, the crankshaft is a core component that is responsible for converting the linear motion of the piston into rotational motion to output power.

[0003] Among them, the heart component of the engine is composed of multiple crank throws, and each crank throw has a main journal and a connecting rod journal, which is responsible for converting the reciprocating motion of the piston into rotational motion.

[0004] In the existing engine shaft assembly, the bearing connects the crankshaft and the crankcase components to ensure the rotational accuracy and stability of the crankshaft. Then, the components connecting the crankshaft and the piston transmit the reciprocating motion of the piston to the crankshaft and withstand and buffer the vibration and impact of the engine. However, when the crankshaft needs to be maintained and repaired after long-term use, it requires the staff to use special tools and have certain professional skills to disassemble it. Such operation is complicated and difficult, which not only increases the workload of the staff but also reduces the practicality of the equipment. Summary 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 an engine shaft assembly, which can solve the problem that when the crankshaft needs to be maintained and repaired after long-term use, it requires the staff to use special tools and have certain professional skills to disassemble it. Such operation is complicated and difficult, which not only increases the workload of the staff but also reduces the practicality of the equipment.

[0006] To achieve the above purpose, the utility model provides the following technical solution: an engine shaft assembly, including a main shaft body, and a limiting device is arranged on the main shaft body;

[0007] The limiting device includes a crankshaft and a first connector. One end of the first connector is fixedly connected to one end of the crankshaft. A guide groove is formed on the outer wall of the end of the first connector away from the crankshaft. Four guide blocks are fixedly connected to the outer wall of one end of the main shaft body. The outer walls of the four guide blocks are slidably connected to the inside of the guide groove. Four fixing seats are fixedly connected to the outer wall of the end of the first connector away from the crankshaft. First limiting slider grooves are formed on the outer walls of the four guide blocks, and four second limiting slider grooves are formed on the outer wall of the first connector;

[0008] Among them, a limiting slider is slidably connected to the inside of each of the four second limiting slider grooves, a second limiting clamping plate groove is formed in one end of the outer wall of each of the four fixing seats, a first limiting clamping plate groove is formed in the outer wall of each of the four limiting sliders, a limiting clamping plate is slidably connected to the inside of each of the four first limiting clamping plate grooves, a second fixing bolt groove is formed in the outer wall of each of the four fixing seats, a fixing bolt is threadedly connected to the inside of each of the four second fixing bolt grooves, and a first fixing bolt groove is formed in the upper surface of one end of each of the four limiting clamping plates close to the fixing seat.

[0009] Preferably, one end of each of the four limiting sliders close to the guiding block slides and extends into the inside of the guiding groove and is respectively in contact with the inner wall of the corresponding first limiting slider groove.

[0010] Preferably, one end of each of the four limiting clamping plates close to the second limiting clamping plate groove slides and extends into the inside of the second limiting clamping plate groove.

[0011] Preferably, one end of each of the four fixing bolts close to the first fixing bolt groove threadedly extends into the inside of the first fixing bolt groove.

[0012] Preferably, a second connecting head is installed at one end of the crankshaft away from the main shaft body.

[0013] Preferably, a balancing weight is arranged on the crankshaft;

[0014] Among them, a crank is arranged on the crankshaft. The crank is the connecting part between the main journal and the connecting rod journal, and its cross-section is oval.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. For this engine shaft assembly, by turning the fixing bolt in the limiting device to rotate so that the other end thereof is disengaged from the inside of the second fixing bolt groove, and then pulling the limiting clamping plate to slide it out of the inside of the first limiting clamping plate groove and the second limiting clamping plate groove, thereby the limiting slider loses its limit, and then pulling the crankshaft can remove it from the main shaft body. In this way, disassembling and assembling the crankshaft is convenient, simple and fast, avoiding the need to rely on special tools, effectively reducing the workload of the staff, and improving the practicability of the equipment at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following further describes the present utility model in conjunction with the drawings and embodiments:

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0019] Figure 2 is a structural schematic diagram of the outside of the crankshaft of the present utility model;

[0020] Figure 3 is a structural schematic diagram of the outside of the first connecting head of the present utility model.

[0021] Reference numerals: 1, main shaft body; 2, fixing bolt; 3, first connector; 4, second connector; 5, crankshaft; 6, limiting slider; 7, fixing seat; 8, limiting clamping plate; 9, guiding block; 10, first limiting slider groove; 11, first fixing bolt groove; 12, first limiting clamping plate groove; 13, guiding groove; 14, second fixing bolt groove; 15, second limiting slider groove; 16, second limiting clamping plate groove. Detailed implementation manners

[0022] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The function of the accompanying drawings is to supplement the description in 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, but it cannot be understood as a limitation on the protection scope of the present invention.

[0023] 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 accompanying 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, and therefore cannot be understood as a limitation on the present invention.

[0024] In the description of the present invention, greater than, less than, exceeding, etc. are understood as not including the number itself, and above, below, within, etc. are understood as including the number itself. If the first and second are described only for the purpose of distinguishing technical features, they cannot be understood 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.

[0025] 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.

[0026] Please refer to Figures 1-3 , the present invention provides a technical solution: an engine shaft assembly, including a main shaft body 1;

[0027] A limiting device is provided on the main shaft body 1;

[0028] The limiting device includes a crankshaft 5 and a first connector 3. One end of the first connector 3 is fixedly connected to one end of the crankshaft 5. A guiding groove 13 is formed on the outer wall of the end of the first connector 3 away from the crankshaft 5. Four guiding blocks 9 are fixedly connected to the outer wall of one end of the main shaft body 1. The outer walls of the four guiding blocks 9 are slidably connected to the inside of the guiding groove 13. Four fixing seats 7 are fixedly connected to the outer wall of the end of the first connector 3 away from the crankshaft 5. First limiting slider grooves 10 are formed on the outer walls of the four guiding blocks 9. Second limiting slider grooves 15 are formed on the outer wall of the first connector 3. Limiting sliders 6 are slidably connected to the inside of the four second limiting slider grooves 15. One ends of the four limiting sliders 6 close to the guiding blocks 9 slide into the inside of the guiding groove 13 and are respectively in contact with the inner walls of the corresponding first limiting slider grooves 10. Second limiting card board grooves 16 are formed on the outer walls of one ends of the four fixing seats 7. First limiting card board grooves 12 are formed on the outer walls of the four limiting sliders 6. Limiting card boards 8 are slidably connected to the inside of the four first limiting card board grooves 12. One ends of the four limiting card boards 8 close to the second limiting card board grooves 16 slide into the inside of the second limiting card board grooves 16. Second fixing bolt grooves 14 are formed on the outer walls of the four fixing seats 7. Fixing bolts 2 are threadedly connected to the inside of the four second fixing bolt grooves 14. First fixing bolt grooves 11 are formed on the upper surfaces of one ends of the four limiting card boards 8 close to the fixing seats 7. One ends of the four fixing bolts 2 close to the first fixing bolt grooves 11 are threadedly extended into the inside of the first fixing bolt grooves 11.

[0029] Wherein, a second connector 4 is installed at the end of the crankshaft 5 away from the main shaft body 1. Balance weights are arranged on the crankshaft 5. A crank is arranged on the crankshaft 5. The crank is the connecting part between the main journal and the connecting rod journal, and its cross-section is oval.

[0030] Furthermore, when using this device, first, the crankshaft 5 is installed inside the axle box through the main shaft body 1 and the second connector 4. Then, the balance weights arranged on the crankshaft 5 can be used to balance the unbalanced centrifugal torque and a part of the reciprocating inertia force of the engine, making the rotation of the crankshaft 5 stable. Next, when the crankshaft 5 needs to be removed, turn the fixing bolt 2 to rotate it so that the other end thereof disengages from the inside of the second fixing bolt groove 14. Then, pull the limiting card board 8 to slide it out of the inside of the first limiting card board groove 12 and the second limiting card board groove 16, thereby making the limiting slider 6 lose its limit. Then, pull the crankshaft 5 to remove it from the main shaft body 1.

[0031] By turning the fixing bolt 2 in the limiting device to rotate it so that the other end thereof disengages from the inside of the second fixing bolt groove 14, and then pulling the limiting clamping plate 8 to slide it out from the inside of the first limiting clamping plate groove 12 and the second limiting clamping plate groove 16, thereby making the limiting slider 6 lose its limit, and then pulling the crankshaft 5, it can be removed from the main shaft body 1. In this way, the disassembly and assembly of the crankshaft 5 are convenient, simple and fast, avoiding the need to rely on special tools, effectively reducing the workload of the staff, and at the same time improving the practicability of the equipment. By arranging balance weights on the crankshaft 5, it can be used to balance the unbalanced centrifugal moment and a part of the reciprocating inertia force of the engine, making the crankshaft 5 rotate smoothly, and at the same time improving the product quality and service life.

[0032] Working principle: First, the crankshaft 5 is installed inside the axle box through the main shaft body 1 and the second connecting head 4. Then, by arranging balance weights on the crankshaft 5, it can be used to balance the unbalanced centrifugal moment and a part of the reciprocating inertia force of the engine, making the crankshaft 5 rotate smoothly. Next, when the crankshaft 5 needs to be removed, turn the fixing bolt 2 to rotate it so that the other end thereof disengages from the inside of the second fixing bolt groove 14, and then pull the limiting clamping plate 8 to slide it out from the inside of the first limiting clamping plate groove 12 and the second limiting clamping plate groove 16, thereby making the limiting slider 6 lose its limit, and then pull the crankshaft 5, it can be removed from the main shaft body 1.

[0033] 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 knowledge scope of those of ordinary skill in the art in the said technical field, various changes can also be made without departing from the gist of the present invention.

Claims

1. An engine shaft assembly, comprising a main shaft body (1), characterized in that: A limiting device is provided on the main shaft body (1); The limiting device includes a crankshaft (5) and a first connector (3). One end of the first connector (3) is fixedly connected to one end of the crankshaft (5). A guiding groove (13) is formed on the outer wall of the end of the first connector (3) away from the crankshaft (5). Four guiding blocks (9) are fixedly connected to the outer wall of one end of the main shaft body (1). The outer walls of the four guiding blocks (9) are slidably connected to the inside of the guiding groove (13). Four fixing seats (7) are fixedly connected to the outer wall of the end of the first connector (3) away from the crankshaft (5). First limiting slider grooves (10) are formed on the outer walls of the four guiding blocks (9). Four second limiting slider grooves (15) are formed on the outer wall of the first connector (3); Among them, limiting sliders (6) are slidably connected to the inside of the four second limiting slider grooves (15). Second limiting card board grooves (16) are formed on the outer walls of one ends of the four fixing seats (7). First limiting card board grooves (12) are formed on the outer walls of the four limiting sliders (6). Limiting card boards (8) are slidably connected to the inside of the four first limiting card board grooves (12). Second fixing bolt grooves (14) are formed on the outer walls of the four fixing seats (7). Fixing bolts (2) are threadedly connected to the inside of the four second fixing bolt grooves (14). First fixing bolt grooves (11) are formed on the upper surfaces of the ends of the four limiting card boards (8) close to the fixing seats (7).

2. The engine shaft assembly according to claim 1, wherein: One ends of the four limiting sliders (6) close to the guiding blocks (9) slide and extend into the inside of the guiding groove (13) and are respectively in contact with the inner walls of the corresponding first limiting slider grooves (10).

3. An engine shaft assembly according to claim 1, characterized in that: One ends of the four limiting card boards (8) close to the second limiting card board grooves (16) slide and extend into the inside of the second limiting card board grooves (16).

4. An engine shaft assembly according to claim 1, wherein: One ends of the four fixing bolts (2) close to the first fixing bolt grooves (11) threadedly extend into the inside of the first fixing bolt grooves (11).

5. An engine shaft assembly according to claim 1, characterized in that: A second connector (4) is installed at the end of the crankshaft (5) away from the main shaft body (1).

6. The engine shaft assembly according to claim 1, wherein: Balance weights are provided on the crankshaft (5); Among them, a crank is provided on the crankshaft (5). The crank is the connecting part between the main journal and the connecting rod journal, and its cross section is elliptical.

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