Steel connecting rod

Abstract

The utility model is applicable to the technical field of engine parts, and provides a steel connecting rod, which comprises a connecting rod body and a connecting rod tile cover, the connecting rod body is detachably connected with the connecting rod tile cover, one end of the connecting rod body far away from the connecting rod tile cover is provided with a small end hole, and the other end of the connecting rod body is connected with the connecting rod tile cover to form a large end hole. A shaft sleeve is arranged in the small-end hole, a bearing bush is arranged in the large-end hole, and an oil throwing spoon is detachably installed on the connecting rod bush cover. The shaft sleeve and the bearing bush are respectively arranged at the small-end hole and the large-end hole of the connecting rod, so that the abrasion can be effectively reduced, the maintenance cost is reduced, the split type oil throwing spoon is simple and reliable to install, and the oil throwing spoon is detachably installed and fixed by using a stamping structural member, so that engine oil can be effectively lubricated, the strength of connecting rod parts damaged by welding is also avoided, and the service life of the connecting rod is prolonged. And the risk is greatly reduced.

Description

Technical Field

[0001] This utility model relates to engine components, and in particular to a steel connecting rod. Background Technology

[0002] The connecting rod assembly consists of the connecting rod body, connecting rod big end cap, connecting rod small end bushing, connecting rod big end bearing, and connecting rod bolts (or screws). The connecting rod assembly bears the force of the gas transmitted from the piston pin, as well as its own oscillation and the reciprocating inertial force of the piston assembly. The magnitude and direction of these forces change periodically. Therefore, the connecting rod is subjected to alternating loads such as compression and tension. The connecting rod must have sufficient fatigue strength and structural rigidity. Insufficient fatigue strength often leads to fracture of the connecting rod body or connecting rod bolts, resulting in a major accident causing complete machine failure. Insufficient rigidity will cause bending deformation of the rod body and out-of-roundness deformation of the connecting rod big end, leading to uneven wear of the piston, cylinder, bearings, and crank pin.

[0003] Currently, steel connecting rods on the market cannot be stamped with an integrated oil slinger. Instead, oil slingers are often added without one or by welding later. In steel connecting rods without an oil slinger, the engine oil usually cannot provide effective lubrication. When an oil slinger is added by welding, the high temperature generated during the welding process destroys the original heat treatment of the steel connecting rod, greatly reducing the strength of the parts. Utility Model Content

[0004] This utility model provides a steel connecting rod, which aims to solve the problem that in steel connecting rods without an oil slinger, the oil usually cannot provide effective lubrication. Adding an oil slinger by welding destroys the original heat treatment of the steel connecting rod due to the high temperature generated during the welding process, which greatly reduces the strength of the parts.

[0005] This utility model is implemented as follows: a steel connecting rod includes a connecting rod body and a connecting rod bearing cover. The connecting rod body and the connecting rod bearing cover are detachably connected. A small end hole is opened at one end of the connecting rod body away from the connecting rod bearing cover, and a large end hole is formed by connecting the other end of the connecting rod body to the connecting rod bearing cover. A bushing is provided in the small end hole, and a bearing is provided in the large end hole. An oil slinger is detachably installed on the connecting rod bearing cover.

[0006] Preferably, the bushing is made of copper.

[0007] The beneficial effects of adopting the above-mentioned further solution are: good lubrication, which can effectively avoid wear between the small end of the connecting rod and the external piston pin during use.

[0008] Preferably, the bearing bush is composed of two semi-circular ring bearing pieces, which are sequentially fitted into the large end hole formed by the connecting rod body and the connecting rod bearing cover, and the two bearing pieces are detachably connected to the connecting rod body and the connecting rod bearing cover, respectively.

[0009] The advantages of adopting the above-mentioned further solutions are: effectively reducing wear at the big end of the connecting rod, facilitating the replacement of severely worn single bearing shells, and reducing maintenance costs.

[0010] Preferably, the connecting rod body and the connecting rod bearing cap are provided with threaded grooves at both ends of the large end hole, and the connecting rod body and the connecting rod bearing cap are fixed by bolts that are adapted to the threaded grooves.

[0011] The beneficial effect of adopting the above-mentioned further solution is to ensure the stability of the structural connection between the two.

[0012] Preferably, the oil slinger has a threaded hole that matches the bolt, the oil slinger corresponds to the threaded groove of the connecting rod bearing cover, and is detachably fixed to the connecting rod bearing cover by bolts.

[0013] The advantages of adopting the above-mentioned further solution are: convenient installation, high reliability, and effective solution to the problem of reduced connecting rod strength caused by high welding temperature.

[0014] Preferably, the oil slinger is provided with a limiting block, which fits against the side wall of the connecting rod bearing cover.

[0015] The beneficial effect of adopting the above-mentioned further solution is that it limits the movement on both the left and right sides, effectively preventing the movement of the bolts during installation.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: The steel connecting rod of this utility model can effectively reduce wear and maintenance costs by setting bushings and bearings at the small end hole and the large end hole of the connecting rod, respectively. The split-type oil slinger is simple and reliable to install. The oil slinger uses a stamped structural part for detachable installation and fixation, which can ensure effective lubrication of the engine oil and avoid the strength of the connecting rod parts damaged by welding, thus greatly reducing the risk. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the side view structure;

[0019] Figure 3 for Figure 2 A schematic diagram of the exploded structure;

[0020] Figure 4 for Figure 2 A schematic diagram of the oil-slinging spoon structure.

[0021] In the diagram: 1. Connecting rod body; 2. Connecting rod bearing cap; 3. Small end hole; 4. Large end hole; 5. Bushing; 6. Bearing shell; 7. Oil slinger; 8. Bolt; 9. Limiting block. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] Please see Figure 1-4 This utility model provides a technical solution for a steel connecting rod: a steel connecting rod includes a connecting rod body 1 and a connecting rod cover 2, the connecting rod body 1 and the connecting rod cover 2 are detachably connected, a small end hole 3 is provided at one end of the connecting rod body 1 away from the connecting rod cover 2, and a large end hole 4 is formed by connecting the other end of the connecting rod body 1 to the connecting rod cover 2, a bushing 5 is provided in the small end hole 3, a bearing 6 is provided in the large end hole 4, and an oil slinger 7 is detachably installed on the connecting rod cover 2.

[0024] In this embodiment, by adding connecting rod bushing 5 and bearing 6, wear can be effectively reduced and maintenance costs can be lowered. The split-type oil slinger is simple and reliable to install. The oil slinger 7 is installed and fixed by using a stamped structural part, which can ensure that the oil can effectively lubricate the connecting rod parts and avoid the strength of the connecting rod parts damaged by welding, thus greatly reducing the risk.

[0025] Furthermore, the bushing 5 is made of copper.

[0026] In this embodiment, a copper bushing 5 is used at the small end of the connecting rod. The copper bushing 5 has good lubrication and can effectively prevent wear between the small end of the connecting rod and the external piston pin during use.

[0027] Typically, the bearing 6 consists of two semi-circular ring bearing pieces, which are sequentially fitted into the large end hole 4 formed by the connecting rod body 1 and the connecting rod bearing cover 2. Both bearing pieces are detachably connected to the connecting rod body 1 and the connecting rod bearing cover 2.

[0028] In this embodiment, the connecting rod big end is installed using a detachable bearing 6. Two split bearings 6 are installed on the connecting rod body 1 and the connecting rod bearing cover 2 respectively. This effectively reduces wear at the connecting rod big end and facilitates the replacement of severely worn single bearings 6, thereby reducing maintenance costs.

[0029] Specifically, the connecting rod body 1 and the connecting rod cover 2 are both provided with threaded grooves at both ends of the large end hole 4, and the connecting rod body 1 and the connecting rod cover 2 are fixed by bolts 8 that are compatible with the threaded grooves.

[0030] In this embodiment, the connecting rod body 1 and the connecting rod cover 2 are fixedly connected by bolts 8 at both ends to ensure the structural connection stability of the two.

[0031] In addition, the oil slinger 7 has a threaded hole that matches the bolt 8. The oil slinger 7 corresponds to the threaded groove of the connecting rod bearing cover 2 and can be detachably fixed to the connecting rod bearing cover 2 by the bolt 8.

[0032] In this embodiment, the connecting rod is fixed with bolts 8 using an oil spatula 7, which is convenient to install, highly reliable, and effectively solves the problem of reduced connecting rod strength caused by high welding temperature.

[0033] It should be noted that the oil slinger 7 is equipped with a limit block 9, which fits against the side wall of the connecting rod cover 2.

[0034] In this embodiment, a limiting block 9 is integrally molded on the oil slinger 7. The oil slinger 7 with the limiting block 9 is limited by the left and right sides of the connecting rod cover 2, which effectively prevents it from rotating with the bolt during installation.

[0035] The working principle and usage process of this utility model are as follows: After the utility model is installed, the bushing 5 of this product is pressed into the connecting rod body 1 during the manufacturing process and connected to the external piston pin; the bearing 6 is installed and fixed to the large end hole 4 of the connecting rod body 1 and connected to the external crankshaft; the oil slinger 7 is installed and fixed on the connecting rod body 1 by bolts 8, which plays the role of oil splash lubrication. The oil slinger 7 has a limit structure 9, which limits the left and right sides of the connecting rod bearing cover 2 through the limit mechanism 9 to prevent it from rotating with the bolts during the installation process.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A steel connecting rod, characterized in that: The device includes a connecting rod body (1) and a connecting rod cover (2). The connecting rod body (1) and the connecting rod cover (2) are detachably connected. A small end hole (3) is provided at one end of the connecting rod body (1) away from the connecting rod cover (2). A large end hole (4) is formed by connecting the other end of the connecting rod body (1) to the connecting rod cover (2). A bushing (5) is provided in the small end hole (3). A bearing (6) is provided in the large end hole (4). An oil slinger (7) is detachably installed on the connecting rod cover (2). The bearing (6) is composed of two semi-circular shaft pieces. The two shaft pieces are sequentially attached to the large end hole (4) formed by the connecting rod body (1) and the connecting rod cover (2). The two shaft pieces are detachably connected to the connecting rod body (1) and the connecting rod cover (2) respectively.

2. A steel connecting rod according to claim 1, characterized in that: The bushing (5) is made of copper.

3. A steel connecting rod according to claim 1, characterized in that: The connecting rod body (1) and the connecting rod cover (2) are provided with threaded grooves at both ends of the large end hole (4), and the connecting rod body (1) and the connecting rod cover (2) are fixed by bolts (8) that are compatible with the threaded grooves.

4. A steel connecting rod according to claim 3, characterized in that: The oil slinger (7) has a threaded hole that matches the bolt (8). The oil slinger (7) corresponds to the threaded groove of the connecting rod cover (2) and is detachably fixed to the connecting rod cover (2) by the bolt (8).

5. A steel connecting rod according to claim 1, characterized in that: The oil slinger (7) is provided with a limiting block (9), which is in contact with the side wall of the connecting rod cover (2).

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