High-strength connecting rod

Abstract

The utility model relates to the technical field of crank connecting rods, in particular to a high-strength connecting rod which comprises a connecting rod body, a first large connecting head is arranged at the bottom end of the connecting rod body, a small connecting head is arranged at the top end of the connecting rod body, a second large connecting head is arranged at the bottom of the first large connecting head, and grooves are formed in the two sides of the top of the first large connecting head. According to the high-strength connecting rod, the connecting rod, the first connecting large head, the second connecting large head, the mounting groove, the limiting plate, the bolt, the groove, the mounting hole, the connecting hole, the positioning plate and the positioning groove are used in cooperation, and after the first connecting large head and the second connecting large head are fixed together through the bolt, further cooperation is conducted through the limiting plate, the positioning plate and the positioning groove. The components are used for firmly fixing the second large connecting head at the bottom of the first large connecting head. The limiting plate and the positioning plate are combined with the positioning groove, so that the supporting strength between the two large ends is enhanced, and relative movement at the joint is limited.

Description

Technical Field

[0001] The utility model relates to the technical field of crank connecting rods, and particularly relates to a high-strength connecting rod. Background Technique

[0002] The connecting rod is a key component in the engine, used to convert the reciprocating motion of the piston into the rotational motion of the crankshaft. It needs to withstand alternating loads such as gas forces, inertia forces, and rotational inertia forces, so it must have sufficient strength and stiffness, and at the same time, the mass should be reduced as much as possible.

[0003] An assembled high-strength connecting rod disclosed in Chinese Patent with the publication number CN219139617U includes a piston and a connecting rod. Pin holes are provided on the outer walls on both sides of the piston, an assembly pin rod penetrates through the interior of the pin holes, a small end of the connecting rod is sleeved around the middle of the assembly pin rod, and a connecting rod is connected to the outer wall at the lower end of the small end of the connecting rod. A cavity is provided in the middle of the connecting rod, so that while the self-weight of the connecting rod is reduced by opening the cavity, the structural strength of the connecting rod is strengthened by a four-way pipe sleeve and a stud arranged in the cavity, enabling the connecting rod to better resist the influence of gas forces transmitted from the piston and inertia forces generated by the reciprocating motion during rotation.

[0004] Regarding the above-related technology, there are some deficiencies in this connecting rod. During actual use, only bolts are used to fix between the first big end of the connecting rod and the second big end of the connecting rod. Since the connecting rod needs to withstand high strength and frequent stress changes during the operation of the engine, deformation is likely to occur at the connection of the connecting rod, reducing the stability of the long-term use of the connecting rod. Therefore, it is necessary to provide a high-strength connecting rod to solve the above technical problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a high-strength connecting rod to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A high-strength connecting rod, which includes:

[0008] A connecting rod, a first connecting big end is provided at the bottom end of the connecting rod, a connecting small end is provided at the top end of the connecting rod, a second connecting big end is provided at the bottom of the first connecting big end, grooves are provided on both sides at the top of the first connecting big end, mounting holes are provided at both ends of the first connecting big end and the second connecting big end, the first connecting big end and the second connecting big end are threadedly connected with bolts through the mounting holes, and mounting grooves are provided on both sides at the connection of the first connecting big end and the second connecting big end;

[0009] The installation groove is rotatably installed with a limiting plate through a rotating shaft installed above its interior. Fixedly installed below the opposite sides of the two limiting plates are positioning plates. A positioning groove is formed on the lower side of the inner wall of the installation groove, and the positioning groove penetrates through the second connecting big head and communicates with the interior of the mounting hole on the second connecting big head;

[0010] The positioning plate is slidably inserted into the positioning groove, and a connecting hole adapted to the bolt is formed on the positioning plate.

[0011] Preferably, a cavity is provided on the connecting rod, and a high-strength filling member is fixedly installed inside the cavity.

[0012] Preferably, the structural feature of the high-strength filling member is in an X shape, and the material of the high-strength filling member is aluminum-magnesium-silicon alloy.

[0013] Preferably, a plurality of reinforcing ribs are welded on both sides of the connection between the connecting rod and the first connecting big head.

[0014] Preferably, the connecting rod and the first connecting big head are of an integrally formed structure.

[0015] Preferably, the shape of the positioning plate is an arc-shaped plate, and the origin of the positioning plate coincides with the position of the rotation connection point between the limiting plate and the inner wall of the installation groove.

[0016] Compared with the prior art, the beneficial effects of the present utility model are:

[0017] 1. By the combined use of the connecting rod, the first connecting big head, the second connecting big head, the installation groove, the limiting plate, the bolt, the groove, the mounting hole, the connecting hole, the positioning plate and the positioning groove, after the first connecting big head and the second connecting big head are fixed together by the bolt, further cooperation is carried out through the limiting plate, the positioning plate and the positioning groove. The function of these components is to firmly fix the second connecting big head at the bottom of the first connecting big head. The combination of the limiting plate and the positioning plate with the positioning groove not only enhances the support strength between the two big heads, but also restricts the relative movement at the connection, reducing the risk of deformation other than bolt fixation. This design improves the stability of the connecting rod during long-term use and reduces the possibility of deformation.

[0018] 2. By the combined use of the cavity and the high-strength filling member, during the use of the connecting rod, by providing a cavity in the connecting rod, the overall weight of the connecting rod is reduced. At the same time, a high-strength filling member is added inside the cavity. The filling member adopts an X-shaped structure, which provides additional stability through the cross support points, effectively enhancing the stability of the connecting rod and helping to reduce its total weight. The high-strength filling member uses aluminum-magnesium-silicon alloy material, which not only has excellent strength and toughness, but also provides a certain buffering effect, thereby improving the impact resistance of the connecting rod and enhancing its protection performance. Description of the Drawings

[0019] Figure 1 is a schematic structural view of the present utility model;

[0020] Figure 2 is a front sectional structural view of the present utility model;

[0021] Figure 3 is a schematic structural view of the connection between the limit plate and the positioning plate in the present utility model;

[0022] Figure 4 of the present utility model Figure 2 is an enlarged structural view of part A.

[0023] In the figure: 1. connecting rod; 2. first connecting big head; 3. second connecting big head; 4. installation groove; 5. limit plate; 6. bolt; 7. groove; 8. reinforcing rib; 9. connecting small head; 10. cavity; 11. high-strength filling piece; 12. installation hole; 13. connecting hole; 14. positioning plate; 15. positioning groove. Specific embodiments

[0024] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0026] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] Please refer to Figures 1-4 , an embodiment provided by the present utility model:

[0029] A high-strength connecting rod, which includes:

[0030] Connecting rod 1, a first connecting big head 2 is arranged at the bottom end of connecting rod 1, a connecting small head 9 is arranged at the top end of connecting rod 1, a second connecting big head 3 is arranged at the bottom of the first connecting big head 2, grooves 7 are opened on both sides of the top of the first connecting big head 2, mounting holes 12 are opened at both ends of the first connecting big head 2 and the second connecting big head 3, and bolts 6 are threadedly connected to the first connecting big head 2 and the second connecting big head 3 through the mounting holes 12. Mounting grooves 4 are opened on both sides of the connection part of the first connecting big head 2 and the second connecting big head 3;

[0031] A limiting plate 5 is rotatably installed in the mounting groove 4 through a rotating shaft installed above the interior thereof. Positioning plates 14 are fixedly installed below the opposite sides of the two limiting plates 5. A positioning groove 15 is opened on the lower side of the inner wall of the mounting groove 4, and the positioning groove 15 penetrates through the second connecting big head 3 and is connected to the interior of the mounting hole 12 on the second connecting big head 3;

[0032] The positioning plate 14 is slidably inserted into the positioning groove 15, and a connection hole 13 adapted to the bolt 6 is opened on the positioning plate 14.

[0033] A cavity 10 is arranged on the connecting rod 1, and a high-strength filling member 11 is fixedly installed inside the cavity 10.

[0034] In one of the embodiments, the structural feature of the high-strength filling member 11 is in an X shape, and the material of the high-strength filling member 11 is an aluminum-magnesium-silicon alloy.

[0035] In one of the preferred embodiments, a plurality of reinforcing ribs 8 are welded on both sides of the connection part of the connecting rod 1 and the first connecting big head 2. By welding the reinforcing ribs 8, the anti-deformation ability of the connection part of the connecting rod 1 and the first connecting big head 2 is significantly improved. This can effectively reduce the deformation problem caused by long-term use or high-strength loads and improve the stability of the structure.

[0036] In one of the embodiments, the connecting rod 1 and the first connecting big head 2 are of an integrally formed structure, which improves the overall strength and rigidity of the structure.

[0037] In one of the preferred embodiments, the positioning plate 14 is shaped as an arc-shaped plate, and the origin of the positioning plate 14 is consistent with the rotation connection point of the limit plate 5 and the inner wall of the mounting groove 4, ensuring that the positioning plate 14 can be accurately aligned during rotation or positioning, and effectively enhancing the stability and support strength of the big end connection of the connecting rod.

[0038] The working principle of the utility model is as follows: the parts not involved in the device are the same as the prior art or can be implemented by the prior art. When installing the second connecting head 3 on the connecting rod, first move the limiting plate 5 inside the installation groove 4 to make the limiting plate 5 flip upward. The movement of the limiting plate 5 drives the positioning plate 14 to move, so as to avoid the positioning plate 14 being placed at the bottom of the first connecting head 2 to affect the subsequent precise docking of the second connecting head 3 at the bottom of the first connecting head 2. After adjusting the positions of the limiting plate 5 and the positioning plate 14, align the second connecting head 3 with the bottom of the first connecting head 2, and then rotate the limiting plate 5, so that the limit plate 5 enters the interior of the installation groove 4, and the positioning plate 14 is inserted into the interior of the positioning groove 15 on the second connecting head 3, and then the bolt 6 is screwed into the interior of the mounting holes 12 on the first connecting head 2 and the second connecting head 3 in sequence. In the process of entering the interior of the mounting hole 12 on the second connecting head 3, the bolt 6 will directly pass through the connection hole 13 on the positioning plate 14, ensuring that the positioning plate 14 is firmly plugged into the interior of the positioning groove 15. At the same time, after the first connecting head 2 and the second connecting head 3 are fixed together by the bolt 6, they are further matched by the limit plate 5, the positioning plate 14 and the positioning groove 15. The function of these components is to firmly fix the second connecting head 3 to the bottom of the first connecting head 2. The combination of the limit plate 5 and the positioning plate 14 with the positioning groove 15 not only enhances the support strength between the two heads, but also limits the relative movement of the connection, reducing the risk of deformation other than the fixing of the bolt 6. Improves the stability of the connecting rod in long-term use and reduces the possibility of deformation.

[0039] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A high-strength connecting rod, characterized in that: It includes: A connecting rod (1), wherein a first connecting head (2) is provided at the bottom end of the connecting rod (1), a connecting head (9) is provided at the top end of the connecting rod (1), a second connecting head (3) is provided at the bottom of the first connecting head (2), grooves (7) are provided on both sides of the top of the first connecting head (2), mounting holes (12) are provided at both ends of the first connecting head (2) and the second connecting head (3), bolts (6) are threadedly connected to the first connecting head (2) and the second connecting head (3) through the mounting holes (12), and mounting grooves (4) are provided on both sides of the connection between the first connecting head (2) and the second connecting head (3); The installation groove (4) is rotatably mounted with a limit plate (5) via a rotating shaft mounted on the upper part thereof, and positioning plates (14) are fixedly mounted below the opposite sides of the two limit plates (5). A positioning groove (15) is provided on the lower side of the inner wall of the installation groove (4), and the positioning groove (15) passes through the second connecting head (3) and is connected to the inside of the mounting hole (12) on the second connecting head (3); The positioning plate (14) is slidably plugged into the positioning groove (15), and a connecting hole (13) adapted to the bolt (6) is provided on the positioning plate (14).

2. A high-strength connecting rod according to claim 1, characterized in that: The connecting rod (1) is provided with a cavity (10), and a high-strength filling piece (11) is fixedly installed inside the cavity (10).

3. A high-strength connecting rod according to claim 2, characterized in that: The structural feature of the high-strength filling piece (11) is X-shaped, and the material of the high-strength filling piece (11) is aluminum-magnesium-silicon alloy.

4. A high-strength connecting rod according to claim 1, characterized in that: A plurality of reinforcing ribs (8) are welded on both sides of the connection between the connecting rod (1) and the first connecting head (2).

5. The high-strength connecting rod according to claim 1, characterized in that: The connecting rod (1) and the first connecting large end (2) are an integrally formed structure.

6. A high-strength connecting rod according to claim 1, characterized in that: The positioning plate (14) is in the shape of an arc-shaped plate, and the origin of the positioning plate (14) is consistent with the position of the rotation connection point between the limiting plate (5) and the inner wall of the installation groove (4).

Images