Engine connecting rod convenient to disassemble and assemble

Abstract

The utility model discloses an engine connecting rod convenient to disassemble and assemble, which belongs to the technical field of engine connecting rods and comprises a rod body and a connecting rod big end, the connecting rod big end is fixedly mounted at one end of the rod body, connecting rod covers are symmetrically mounted on two sides of the connecting rod big end, fixing cylinders are slidably mounted in the connecting rod covers, and fixing rods are fixedly mounted in the fixing cylinders. One end of the fixing rod is connected with a handle, telescopic sleeves are symmetrically arranged at the other end of the fixing rod, springs are arranged in the telescopic sleeves, and the other ends of the springs are connected with guide columns. According to the engine connecting rod convenient to disassemble and assemble, the disassembling time can be shortened, by rotating the handle, the fixing rod in the fixing barrel can stretch the spring and the telescopic sleeve to stretch out and draw back together, a positioning pin on the connecting rod cover is pulled out, rapid disassembling is achieved, and during assembling, the handle is rotated, the spring is stretched and aligned with a groove to be inserted, the spring pushes the telescopic sleeve to stretch out, and assembling is completed. The positioning pin is inserted, locking is achieved, and the rod body can be prevented from loosening under high-frequency vibration through locking combination of the spring and the positioning pin.

Description

Technical Field

[0001] This utility model specifically relates to an engine connecting rod that is easy to assemble and disassemble, and belongs to the field of engine connecting rod technology. Background Technology

[0002] The connecting rod is a crucial component connecting the piston and crankshaft. Its function is to transmit the gas pressure on the piston to the crankshaft, and simultaneously convert the reciprocating motion of the piston into the rotational motion of the crankshaft. During engine operation, the connecting rod needs to withstand rapid changes in piston load and inertial forces, operating in a complex environment and under harsh stress conditions. Traditional engine connecting rods are typically connected using bolts, such as the connecting rod big end being fastened to the connecting rod cap with connecting rod bolts and nuts. Disassembly and assembly require the use of specific tools to tighten the bolts and nuts, making the operation cumbersome. Furthermore, the bolts may corrode or strip, further increasing the difficulty of disassembly and assembly.

[0003] Patent document CN212615867U discloses an engine connecting rod, "including a connecting rod body, a connecting rod cover, an upper bearing shell, a lower bearing shell, and a positioning structure. One end of the connecting rod body is fixedly connected to the connecting rod cover. A semi-circular groove is provided on the side of the connecting rod body opposite to the connecting rod cover. Two semi-circular grooves form a large end hole. The upper bearing shell and the lower bearing shell are arranged opposite each other and are disposed in the large end hole. The upper bearing shell and the lower bearing shell are installed in the large end hole through the positioning structure, which increases the strength of the bearing shell and solves the problem of easy deformation during bearing shell assembly."

[0004] However, the aforementioned engine connecting rod mainly focuses on increasing the strength of the bearing and solving the problem of easy deformation during bearing assembly. It does not take into account the fact that the traditional connecting rod big end is connected to the rod body by bolts, and disassembly requires special tools, which is time-consuming and labor-intensive. Therefore, it is necessary to develop an engine connecting rod that is easy to disassemble and assemble, so that it can be disassembled without traditional tools such as wrenches, thus shortening the disassembly time. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing an engine connecting rod that is easy to disassemble and assemble, thereby shortening disassembly time and reducing maintenance costs.

[0006] An engine connecting rod that is easy to assemble and disassemble includes a rod body and a connecting rod big end. The connecting rod big end is fixedly installed at one end of the rod body. Connecting rod caps are symmetrically installed on both sides of the connecting rod big end. A fixing cylinder is slidably installed inside the connecting rod cap. A fixing rod is fixedly installed inside the fixing cylinder. A handle is connected to one end of the fixing rod. Telescopic sleeves are symmetrically arranged at the other end of the fixing rod. A spring is installed inside the telescopic sleeve. One end of the spring is connected to the fixing rod. The other end of the spring is connected to a guide post. One end of the guide post extends into the interior of the telescopic sleeve.

[0007] Furthermore, a positioning pin is slidably installed on one side of the connecting rod cover, and a magnet is provided on one side of the positioning pin. The fixing cylinder and the fixing rod are provided with positioning holes corresponding to the positioning pin. One end of the positioning pin extends into the interior of the connecting rod cover, and the magnet is magnetically connected to the connecting rod cover.

[0008] Furthermore, a cup body is installed inside the rod body, a sealing ring is provided on the cup body, the cup body extends into the cup lid, and the cup lid is threadedly connected to the cup body.

[0009] Furthermore, an oil nozzle is provided at the top of the cup body, an oil outlet is provided on one side of the oil nozzle, and an oil groove is connected below the oil outlet, with the oil groove distributed in a ring shape inside the rod body.

[0010] Furthermore, a connecting rod big end is fixedly installed at one end of the rod body, and a connecting rod bearing is provided inside the connecting rod big end.

[0011] Furthermore, a connecting rod small end is fixedly installed at the other end of the rod body, and a piston pin is provided inside the connecting rod small end.

[0012] Furthermore, connecting rod caps are symmetrically installed on both sides of the large end of the connecting rod, and the connecting rod caps are provided with grooves corresponding to the fixed cylinder.

[0013] Beneficial effects:

[0014] 1. This utility model, by installing a quick-release locking device, enables rapid separation of the connecting rod from the crankshaft and piston, eliminating the need for traditional tools such as wrenches and shortening engine disassembly time. When disassembly is required, rotating the handle stretches the spring inside the fixed sleeve, compressing it. The telescopic sleeve then extends and retracts backward along with the spring and guide post, separating from the connecting rod cap. The locating pin on the connecting rod cap is then removed, achieving quick disassembly. During assembly, rotating the handle stretches the spring, storing elastic potential energy. The sleeve is then inserted into the groove, and releasing the handle allows the spring to push the telescopic sleeve. Extend the lever and insert the locating pin to lock it in place. The magnet on the locating pin secures it inside the connecting rod cover, preventing it from wobbling. The lever can be turned to quickly separate the rod from the crankshaft and piston without the need for traditional tools like wrenches, shortening disassembly time. The spring and locating pin lock together to prevent the rod from loosening under high-frequency vibration. The quick-release locking device maintains its elasticity in the high-temperature environment of the engine block, avoiding the preload reduction caused by thermal expansion of traditional bolts. The spring's cushioning effect also reduces wear on other components, extends the replacement cycle of bearings and other vulnerable parts, and reduces maintenance costs.

[0015] 2. This utility model, by installing a lubrication device, can form an oil film on the contact surface, reducing the coefficient of friction and wear. When lubrication is needed, the oil core inside the cup is squeezed by rotating the cup lid, and the lubricating oil is squeezed out. After the lubricating oil in the cup is squeezed out from the oil nozzle, the lubricating oil will flow from the oil outlet inside the rod to the oil groove. Due to the guiding effect of the oil groove, the lubricating oil will flow along the oil groove and can accurately reach the surface of the parts that need lubrication, thereby achieving effective lubrication of these key parts, reducing friction and wear. The sealing ring can prevent lubricating oil leakage and the entry of external impurities. To replenish lubricating oil, simply rotate the cup lid to replenish the lubricating oil. The lubrication device can form an oil film on the contact surface, reducing the coefficient of friction and wear. The lubrication device can also remove the heat generated by friction, avoiding material softening due to overheating. It can reduce waste oil pollution and lower the cost of use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an engine connecting rod structure that is easy to disassemble and assemble according to the present invention;

[0017] Figure 2 This is a schematic diagram of the overall structure of the quick-release locking device of this utility model;

[0018] Figure 3 This is a partial structural schematic diagram of the quick-release locking device of this utility model;

[0019] Figure 4 This is a schematic diagram of the planar structure of the self-lubricating device of this utility model;

[0020] Figure 5 This is a schematic diagram of the self-lubricating device of this utility model.

[0021] In the diagram: 1. Rod body; 2. Connecting rod small end; 3. Connecting rod big end; 4. Connecting rod bearing; 5. Piston pin; 6. Locating pin; 7. Connecting rod cap; 8. Handle; 9. Locating hole; 10. Fixing sleeve; 11. Telescopic sleeve; 12. Groove; 13. Magnet block; 14. Fixing rod; 15. Guide post; 16. Spring; 17. Cup body; 18. Oil outlet; 19. Oil groove; 20. Oil nozzle; 21. Cup cap; 22. Sealing ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5As shown, an engine connecting rod that is easy to assemble and disassemble includes a rod body 1 and a connecting rod big end 3. The connecting rod big end 3 is fixedly installed at one end of the rod body 1. Connecting rod caps 7 are symmetrically installed on both sides of the connecting rod big end 3. A fixing cylinder 10 is slidably installed inside the connecting rod cap 7. A fixing rod 14 is fixedly installed inside the fixing cylinder 10. One end of the fixing rod 14 is connected to a handle 8. The other end of the fixing rod 14 is symmetrically provided with telescopic sleeves 11. A spring 16 is provided inside the telescopic sleeve 11. One end of the spring 16 is connected to the fixing rod 14, and the other end of the spring 16 is connected to a guide post 15. The end extends into the interior of the telescopic sleeve 11. A positioning pin 6 is slidably installed on one side of the connecting rod cover 7. A magnet 13 is provided on one side of the positioning pin 6. Positioning holes 9 corresponding to the positioning pin 6 are provided on the fixed cylinder 10 and the fixed rod 14. One end of the positioning pin 6 extends into the interior of the connecting rod cover 7, and the magnet 13 is magnetically connected to the connecting rod cover 7. Since the traditional connecting rod big end 3 is bolted to the rod body 1, which requires special tools and is time-consuming and labor-intensive, the quick-release locking device can be installed to quickly separate the rod body 1 from the crankshaft and piston without the need for traditional tools such as wrenches, shortening the time required. When disassembling the motor, rotating handle 8 stretches the spring 16 inside the fixed cylinder 10, compressing the spring 16. The telescopic sleeve 11 then extends and retracts along with the spring 16 and guide post 15, separating from the connecting rod cover 7. The positioning pin 6 on the connecting rod cover 7 is then removed for quick disassembly. During assembly, rotating handle 8 stretches the spring 16, storing its elastic potential energy. The spring 16 is then aligned with the groove 12 and inserted. Releasing handle 8 allows the spring 16 to push the telescopic sleeve 11 out. The positioning pin 6 is then inserted to lock the motor in place. The magnet 13 on the locating pin 6 can fix it inside the connecting rod cover 7 to prevent shaking. The rod body 1 can be quickly separated from the crankshaft and piston by turning the handle 8, without the need for traditional tools such as wrenches, thus shortening the engine disassembly time. The spring 16 locks with the locating pin 6 to prevent the rod body 1 from loosening under high-frequency vibration. The quick-release locking device can maintain its elasticity in the high-temperature environment of the engine block, avoiding the preload reduction caused by thermal expansion of traditional bolts. The buffering effect of the spring 16 can also reduce the wear of other parts, extend the replacement cycle of vulnerable parts such as bearings, and reduce maintenance costs.

[0024] Please see Figure 4 and Figure 5As shown, a cup body 17 is installed inside the rod body 1. A sealing ring 22 is provided on the cup body 17. The cup body 17 extends into the cup lid 21, and the cup lid 21 is threadedly connected to the cup body 17. An oil nozzle 20 is provided on the top of the cup body 17, and an oil outlet 18 is provided on one side of the oil nozzle 20. An oil groove 19 is connected below the oil outlet 18, and the oil groove 19 is distributed in a ring shape inside the rod body 1. By installing a lubrication device, an oil film can be formed on the contact surface to reduce the coefficient of friction and reduce wear. When lubrication is needed, the oil core inside the cup body 17 is squeezed by rotating the cup lid 21, and the lubricating oil is squeezed out. When the lubricating oil in the cup body 17 is squeezed out from the oil nozzle 20, it lubricates the skin. The lubricating oil flows from the oil outlet 18 inside the rod body 1 to the oil groove 19. Due to the guiding effect of the oil groove 19, the lubricating oil flows along the oil groove 19 and can accurately reach the surface of the parts that need lubrication, thereby achieving effective lubrication of these key parts, reducing friction and wear. The sealing ring 22 can prevent lubricating oil leakage and the entry of external impurities. To replenish the lubricating oil, simply rotate the cup cap 21 to replenish the lubricating oil. The lubrication device can form an oil film on the contact surface, reducing the coefficient of friction and reducing wear. The lubrication device can carry away the heat generated by friction, avoiding material softening due to overheating. It can reduce waste oil pollution and lower the cost of use.

[0025] Please see Figure 1 As shown, a connecting rod big end 3 is fixedly installed at one end of the rod body 1 to transmit the pulling force of the crankshaft rotation. The connecting rod big end 3 is provided with a connecting rod bearing 4, which reduces the friction coefficient by using a low-hardness anti-friction alloy to avoid direct wear between the crankshaft journal and the connecting rod metal. A connecting rod small end 2 is fixedly installed at the other end of the rod body 1 to transmit the thrust of the piston reciprocating motion. A piston pin 5 is provided inside the connecting rod small end 2 as a hinge between the piston and the rod body 1, which transmits the gas pressure at the top of the piston to the rod body 1, and at the same time converts the swing of the rod body 1 into the reciprocating motion of the piston. Connecting rod caps 7 are symmetrically installed on both sides of the connecting rod big end 3 to withstand the explosion pressure and transmit radial load. The connecting rod caps 7 are provided with grooves 12 corresponding to the fixed cylinder 10.

[0026] As a technical optimization of this utility model, when disassembly is required, rotating the handle 8 will stretch the spring 16 by rotating the fixing rod 14 inside the fixing cylinder 10, compressing the spring 16. The telescopic sleeve 11 will then extend and retract along with the spring 16 and the guide post 15, thereby separating from the connecting rod cover 7. Then, the positioning pin 6 on the connecting rod cover 7 can be pulled out, thus achieving quick disassembly. During assembly, rotating the handle 8 will stretch the spring 16, allowing it to store elastic potential energy. Then, it will be inserted into the groove 12. Releasing the handle 8 will allow the spring 16 to push the telescopic sleeve 11 out. Then, the positioning pin 6 will be inserted to lock the connection. The magnet 13 on the positioning pin 6 can fix it inside the connecting rod cover 7 to prevent shaking. The quick separation of the rod body 1 from the crankshaft and piston can be completed by rotating the handle 8, without the need for traditional tools such as wrenches, thus shortening the engine disassembly time. The locking engagement between the spring 16 and the positioning pin 6 can prevent the rod body 1 from loosening under high-frequency vibration. The quick-release locking device can maintain its elasticity in the high-temperature environment of the engine block. Performance-wise, it avoids the preload reduction caused by thermal expansion of traditional bolts. The buffering effect of spring 16 can also reduce the wear of other components, extend the replacement cycle of vulnerable parts such as bearings, and reduce maintenance costs. When lubrication is needed, the oil core in the cup body 17 is squeezed by rotating the cup cover 21 to squeeze out the lubricating oil. After the lubricating oil in the cup body 17 is squeezed out from the oil nozzle 20, the lubricating oil will flow from the oil outlet 18 in the rod body 1 to the oil groove 19. Due to the guiding effect of the oil groove 19, the lubricating oil will flow along the oil groove 19 and can accurately reach the surface of the parts that need lubrication, thereby achieving effective lubrication of these key parts, reducing friction and wear. The sealing ring 22 can prevent lubricating oil leakage and the entry of external impurities. To replenish the lubricating oil, simply rotate the cup cover 21 to replenish the lubricating oil. The lubrication device can form an oil film on the contact surface, reduce the coefficient of friction, and reduce wear. The lubrication device can remove the heat generated by friction, avoid material softening due to overheating, reduce waste oil pollution, and reduce usage costs.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An engine connecting rod that is easy to assemble and disassemble, comprising a rod body (1) and a connecting rod big end (3), characterized in that: One end of the rod (1) is fixedly installed with a connecting rod big end (3). Connecting rod caps (7) are symmetrically installed on both sides of the connecting rod big end (3). A fixed cylinder (10) is slidably installed inside the connecting rod cap (7). A fixed rod (14) is fixedly installed inside the fixed cylinder (10). One end of the fixed rod (14) is connected to a handle (8). The other end of the fixed rod (14) is symmetrically provided with a telescopic sleeve (11). A spring (16) is provided inside the telescopic sleeve (11). One end of the spring (16) is connected to the fixed rod (14). The other end of the spring (16) is connected to a guide post (15). One end of the guide post (15) extends into the inside of the telescopic sleeve (11).

2. The engine connecting rod for easy disassembly and assembly as described in claim 1, characterized in that: A positioning pin (6) is slidably installed on one side of the connecting rod cover (7). A magnet block (13) is provided on one side of the positioning pin (6). The fixing cylinder (10) and the fixing rod (14) are provided with positioning holes (9) corresponding to the positioning pin (6). One end of the positioning pin (6) extends into the interior of the connecting rod cover (7), and the magnet block (13) is magnetically connected to the connecting rod cover (7).

3. The engine connecting rod for easy disassembly and assembly as described in claim 1, characterized in that: The rod (1) has a cup (17) installed inside it. The cup (17) is provided with a sealing ring (22). The cup (17) extends into the cup lid (21), and the cup lid (21) is threadedly connected to the cup (17).

4. The engine connecting rod for easy disassembly and assembly as described in claim 3, characterized in that: The cup body (17) is provided with an oil nozzle (20) at the top, and an oil outlet (18) is provided on one side of the oil nozzle (20). An oil groove (19) is connected below the oil outlet (18), and the oil groove (19) is distributed in a ring shape inside the rod body (1).

5. The engine connecting rod for easy disassembly and assembly as described in claim 1, characterized in that: One end of the rod (1) is fixedly installed with a connecting rod big end (3), and a connecting rod bearing (4) is provided inside the connecting rod big end (3).

6. The engine connecting rod for easy disassembly and assembly as described in claim 1, characterized in that: The other end of the rod (1) is fixedly installed with a connecting rod small end (2), and a piston pin (5) is provided inside the connecting rod small end (2).

7. The engine connecting rod for easy disassembly and assembly as described in claim 1, characterized in that: Connecting rod caps (7) are symmetrically installed on both sides of the connecting rod big end (3), and the connecting rod caps (7) are provided with grooves (12) corresponding to the fixed cylinder (10).

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