Engine connecting rod

Abstract

The utility model relates to the technical field of engine connecting rods, and provides an engine connecting rod which comprises a lower connecting rod big end and a lower connecting rod small end, an upper connecting rod big end is detachably installed on the top of the lower connecting rod big end, a plurality of protruding blocks are fixedly installed on the top of the lower connecting rod big end, and a plurality of first threaded holes are formed in the tops of the protruding blocks. A mounting groove is formed in the right side of the lower connecting rod big end rear side; according to the engine connecting rod, through matched use of the bolt structure and the upper connecting rod large head structure, when the engine connecting rod is used, a connecting piece with a proper size is selected firstly, and then the upper connecting rod large head and the lower connecting rod large head as well as the upper connecting rod small head and the lower connecting rod small head are assembled through bolts; and then the lower connecting rod and the upper connecting rod are assembled with the lower connecting rod small head and the lower connecting rod large head through bolts correspondingly, in the using process, after part of the connecting rod is damaged, the whole device can be disassembled by rotating and opening the bolts, then replacement is convenient, different assemblies at different positions can be rapidly replaced, and the using effect of different engines is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of engine connecting rods, and specifically, to an engine connecting rod. Background Art

[0002] The engine connecting rod is one of the core components of the engine. The connecting rod connects the piston and the crankshaft, transmits the force received by the piston to the crankshaft, and converts the reciprocating motion of the piston into the rotational motion of the crankshaft. The engine connecting rod generally consists of a big end of the connecting rod, a small end of the connecting rod, and a connecting rod body. The engine connecting rod is a key component in an internal combustion engine (such as an automobile engine) for connecting the piston and the crankshaft. Most engine connecting rods are integrally formed and are difficult to disassemble.

[0003] After retrieval, the Chinese patent publication number is CN221278241U, which discloses a combined engine connecting rod. In this patent, by setting an adjusting component to adjust the relative positions of the first connecting rod and the second connecting rod, the distance between the big end of the connecting rod and the small end of the connecting rod can be adjusted according to the models of different engines, so as to connect the piston and the crankshaft well, thereby enabling this engine connecting rod to be applicable to engines of different sizes;

[0004] However, when the above device is used, although the big end of the connecting rod and the first connecting rod can be quickly disassembled through the disassembly and assembly component, the small end of the connecting rod and the second connecting rod are fixedly connected. When an accident such as engine water ingress occurs and the engine connecting rod bends after starting, it is impossible to quickly replace the part of the connecting rod located at the second connecting rod that may be bent. It is necessary to replace the second connecting rod and the small end of the connecting rod together, resulting in material waste. At the same time, the integrally designed small end and big end of the connecting rod can only be applicable to a fixed engine. After the engine is damaged, the engine connecting rod is also scrapped, resulting in overall material waste. Content of the Utility Model

[0005] The utility model provides an engine connecting rod, which has the advantages of being able to quickly replace different components at different positions to meet the use of different engines, and solves the problem of material waste caused by the need to replace the whole device when the connecting rod is damaged.

[0006] The technical solution of the utility model is as follows: an engine connecting rod includes a lower big end of the connecting rod and a lower small end of the connecting rod. The upper big end of the connecting rod is detachably installed on the top of the lower big end of the connecting rod. A plurality of convex blocks are fixedly installed on the top of the lower big end of the connecting rod. A plurality of first threaded holes are opened on the top of the convex blocks. An installation groove is opened on the right side at the rear of the lower big end of the connecting rod. A first round hole is opened on the right side at the front of the lower big end of the connecting rod. A plurality of grooves are opened on the bottom of the upper big end of the connecting rod. A plurality of second round holes are opened on the top of the upper big end of the connecting rod. A bolt is detachably installed in the inner cavity of the second round hole. A connecting piece is fixedly installed in the inner cavity of the upper big end of the connecting rod. The upper small end of the connecting rod is detachably installed on the top of the lower small end of the connecting rod.

[0007] Preferably, a lower connecting rod is detachably installed on the left side of the small head of the lower connecting rod. A chute is provided at the top of the lower connecting rod. An upper connecting rod is slidably installed at the top of the lower connecting rod. A slider is fixedly installed at the bottom of the upper connecting rod. Installation blocks are fixedly installed on the right side of the lower connecting rod and the left side of the upper connecting rod. A second threaded hole is provided on the front side of the installation block.

[0008] Preferably, the shape of the outer surface of the convex block matches the shape of the inner cavity of the groove, and the position and number of the convex blocks match the position and number of the grooves. Thus, when in use, the large head of the upper connecting rod is quickly and stably installed with the large head of the lower connecting rod through the groove and the convex block, and the cooperation of the groove and the convex block prevents the large head of the upper connecting rod from being easily separated from the large head of the lower connecting rod.

[0009] Preferably, the shape of the inner cavity of the installation groove matches the shape of the outer surface of the installation block. The installation groove is provided on the right side of the rear side of the large head of the lower connecting rod and the left side of the rear side of the small head of the lower connecting rod. Thus, when in use, the large head of the lower connecting rod, the small head of the lower connecting rod are connected to the upper connecting rod and the lower connecting rod by using the installation groove and the installation block.

[0010] Preferably, the first round hole does not penetrate into the inner cavity of the installation groove. The bolt includes a nut and a screw rod. The shape and thickness of the outer surface of the nut match the shape and thickness of the inner cavity of the first round hole. A through hole is provided at the bottom of the first round hole, and the through hole penetrates into the inner cavity of the second threaded hole. The outer surface diameter of the screw rod matches the inner cavity diameters of the through hole and the second threaded hole. Threads matching the shape and size of the inner wall of the second threaded hole are provided on the outer surface of the bolt. Thus, when in use, the bolt is installed into the inner cavity of the first round hole and rotates through the through hole into the second threaded hole directly behind, thereby connecting and fixing the assembled installation block and the large head or the small head of the lower connecting rod.

[0011] Preferably, the second round holes are distributed on the top of the groove. The second round holes do not penetrate the inner cavity of the groove. A through hole is provided at the bottom of the second round hole, and the through hole penetrates into the groove. The distribution position of the second round holes matches the position of the first threaded holes. The outer surface diameter of the bottom of the bolt and the inner cavity diameter of the through hole both match the inner cavity diameter of the first threaded hole. Threads matching the inner wall shape of the first threaded hole are provided on the outer surface of the bolt. Thus, when in use, after the large head of the upper connecting rod and the large head of the lower connecting rod are assembled, the bolt is inserted downward from the inner cavity of the second round hole, so that the bolt rotates into the inner cavity of the first threaded hole, thereby fixing the assembled large head of the upper connecting rod and the large head of the lower connecting rod.

[0012] Preferably, the structures provided between the large head of the upper connecting rod and the large head of the lower connecting rod and between the small head of the upper connecting rod and the small head of the lower connecting rod are completely the same. A sealing gasket is provided at the bottom of the bolt. The shape of the inner cavity of the connecting piece matches the shape of the outer surface of the installation place when in use. Thus, when in use, the sealing gasket at the bottom of the bolt is used to prevent water flow and the like from entering the bottom of the inner cavities of the first round hole and the second round hole, thereby preventing the outer surface of the bolt from rusting and corroding and causing difficulty in subsequent disassembly of the bolt.

[0013] Preferably, the cross-sections of the inner cavity of the slide and the cross-sections of the slider are both irregular shapes, and the bottom of the upper connecting rod is movably connected to the lower connecting rod through the slider and the slide, so that when in use, the lower connecting rod and the upper connecting rod are slidingly connected through the slider and the slide, and at the same time, the length of the inner cavity of the slide is utilized so that the length of the upper connecting rod and the lower connecting rod after combination can be adjusted within a certain length range, thereby meeting the use in different environments.

[0014] The working principle and beneficial effects of the utility model are as follows:

[0015] The engine connecting rod is used in conjunction with a bolt structure and an upper connecting rod big end structure. When in use, first select a connector of appropriate size, then use bolts to assemble the upper connecting rod big end and the lower connecting rod big end, and the upper connecting rod small end and the lower connecting rod small end. Then, use bolts to assemble the lower connecting rod and the upper connecting rod with the lower connecting rod small end and the lower connecting rod big end respectively. During use, if part of it is damaged, the entire device can be disassembled by rotating and opening the bolts, which is convenient for replacement, so that different components in different positions can be quickly replaced to meet the needs of different engines.

[0016] The engine connecting rod is used in conjunction with the upper connecting rod structure and the slider structure. When in use, the slider and the slide groove are used to facilitate adjustment of the distance between the left and right ends of the upper connecting rod and the lower connecting rod when the upper connecting rod and the lower connecting rod are connected, thereby facilitating rapid assembly of the upper connecting rod big end and the upper connecting rod small end with different engines, thereby achieving the effect of meeting the use of engines of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0018] Figure 1 This is a schematic diagram of the front appearance of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the appearance of the overall structure of the utility model from a top perspective;

[0020] Figure 3 This is a schematic diagram of the back appearance of the overall structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the front appearance of the entire structure of the utility model after being cut open from the right side perspective;

[0022] Figure 5 This is a schematic diagram of the front appearance of the entire structure of the utility model after being cut open from the left side perspective;

[0023] Figure 6 For this utility model Figure 4Schematic diagram of the structure at position A;

[0024] Figure 7 For this utility model Figure 5 Schematic diagram of the structure at position B.

[0025] In the figure: 1, big end of the lower connecting rod; 2, big end of the upper connecting rod; 3, convex block; 4, first threaded hole; 5, installation groove; 6, first round hole; 7, groove; 8, second round hole; 9, bolt; 10, connecting piece; 11, small end of the lower connecting rod; 12, small end of the upper connecting rod; 13, lower connecting rod; 14, sliding groove; 15, upper connecting rod; 16, slider; 17, installation block; 18, second threaded hole. Specific implementation manner

[0026] Next, in combination with the embodiments of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this utility model, rather than all the embodiments. Based on the embodiments in this utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this utility model.

[0027] Please refer to Figures 1 to 7As shown in the figure, an engine connecting rod includes a lower connecting rod big end 1 and a lower connecting rod small end 11. The top of the lower connecting rod big end 1 is detachably installed with an upper connecting rod big end 2. A plurality of bumps 3 are fixedly installed on the top of the lower connecting rod big end 1. A plurality of first threaded holes 4 are opened on the top of the bumps 3. An installation groove 5 is opened on the right side of the rear side of the lower connecting rod big end 1. A first round hole 6 is opened on the right side of the front side of the lower connecting rod big end 1. A plurality of grooves 7 are opened on the bottom of the upper connecting rod big end 2. The shape of the outer surface of the bump 3 matches the shape of the inner cavity of the groove 7, and the position and number of the bumps 3 match the position and number of the grooves 7. Thus, when in use, the upper connecting rod big end 2 is quickly and stably installed with the lower connecting rod big end 1 through the grooves 7 and the bumps 3, and the cooperation of the grooves 7 and the bumps 3 prevents the upper connecting rod big end 2 from being easily separated from the lower connecting rod big end 1. A plurality of second round holes 8 are opened on the top of the upper connecting rod big end 2. The second round holes 8 are distributed on the top of the grooves 7. The second round holes 8 do not penetrate the inner cavity of the grooves 7. A through hole is opened at the bottom of the second round hole 8, and the through hole penetrates into the groove 7. The distribution position of the second round holes 8 matches the position of the first threaded holes 4. The outer surface diameter of the bottom of the bolt 9 and the inner cavity diameter of the through hole both match the inner cavity diameter of the first threaded hole 4. The outer surface of the bolt 9 is provided with a shape matching the inner wall of the first threaded hole 4. Thus, when in use, after the upper connecting rod big end 2 and the lower connecting rod big end 1 are assembled, the bolt 9 is inserted downward from the inner cavity of the second round hole 8, so that the bolt 9 rotates and extends into the inner cavity of the first threaded hole 4, thereby fixing the assembled upper connecting rod big end 2 and lower connecting rod big end 1. The bolt 9 is detachably installed in the inner cavity of the second round hole 8. A connecting piece 10 is fixedly installed in the inner cavity of the upper connecting rod big end 2. The top of the lower connecting rod small end 11 is detachably installed with an upper connecting rod small end 12. The structures provided between the upper connecting rod big end 2 and the lower connecting rod big end 1 and the upper connecting rod small end 12 and the lower connecting rod small end 11 are exactly the same. A sealing gasket is provided at the bottom of the bolt 9. The shape of the inner cavity of the connecting piece 10 matches the shape of the outer surface of the installation place when in use. Thus, when in use, by using the sealing gasket at the bottom of the bolt 9, water flow and the like are prevented from entering the bottom of the inner cavities of the first round hole 6 and the second round hole 8, thereby preventing the outer surface of the bolt 9 from rusting and corroding, resulting in difficulty in disassembling the bolt 9 subsequently. The left side of the lower connecting rod small end 11 is detachably installed with a lower connecting rod 13. A chute 14 is opened on the top of the lower connecting rod 13. An upper connecting rod 15 is slidably installed on the top of the lower connecting rod 13. A slider 16 is fixedly installed at the bottom of the upper connecting rod 15. The cross-sectional shapes of the inner cavity of the chute 14 and the cross-section of the slider 16 are both irregular figures. The bottom of the upper connecting rod 15 is movably connected with the lower connecting rod 13 through the slider 16 and the chute 14. Thus, when in use, the lower connecting rod 13 and the upper connecting rod 15 are slidably connected through the slider 16 and the chute 14, and at the same time, the length of the combined upper connecting rod 15 and the lower connecting rod 13 can be adjusted within a certain length range by using the length of the inner cavity of the chute 14, so as to meet the use in different environments. Installation blocks 17 are fixedly installed on the right side of the lower connecting rod 13 and the left side of the upper connecting rod 15. The shape of the inner cavity of the installation groove 5 matches the shape of the outer surface of the installation block 17.The mounting groove 5 is formed on the right side of the rear side of the big end 1 of the lower connecting rod and the left side of the rear side of the small end 11 of the lower connecting rod. Thus, during use, by means of the mounting groove 5 and the mounting block 17, the big end 1 of the lower connecting rod, the small end 11 of the lower connecting rod are connected to the upper connecting rod 15 and the lower connecting rod 13. A second threaded hole 18 is formed on the front side of the mounting block 17. The first round hole 6 does not penetrate into the inner cavity of the mounting groove 5. The bolt 9 includes a nut and a screw rod. The shape and thickness of the outer surface of the nut match the shape and thickness of the inner cavity of the first round hole 6. A through hole is formed at the bottom of the first round hole 6, and the through hole penetrates into the inner cavity of the second threaded hole 18. The outer surface diameter of the screw rod matches the diameters of the through hole and the inner cavity of the second threaded hole 18. Threads matching the shape and size of the inner wall of the second threaded hole 18 are formed on the outer surface of the bolt 9. Thus, during use, the bolt 9 is installed into the inner cavity of the first round hole 6 and rotates through the through hole into the second threaded hole 18 directly behind to connect and fix the assembled mounting block 17 and the big end 1 or the small end 11 of the lower connecting rod.

[0028] Working principle: During operation, first select the big end 2 and the small end 12 of the upper connecting rod fixedly installed with the connecting member 10 of appropriate size and shape. Then accurately install the big end 2 of the upper connecting rod on the top of the big end 1 of the lower connecting rod through the groove 7 and the convex block 3. Then use the bolt 9 to pass through the second round hole 8 and connect it to the first threaded hole 4 formed on the top of the convex block 3 to fix the assembled big end 1 of the lower connecting rod and the big end 2 of the upper connecting rod. With the gasket provided at the bottom of the nut of the bolt 9, it is avoided that during use, water flow, etc. enter the connection between the big end 1 of the lower connecting rod and the big end 2 of the upper connecting rod through the second round hole 8, resulting in problems such as rusting at the bolt 9 and the connection between the big end 1 of the lower connecting rod and the big end 2 of the upper connecting rod, which affects the disassembly of the bolt 9. In the same way, the small end 11 of the lower connecting rod and the small end 12 of the upper connecting rod with exactly the same assembled structure are fixed. Then, using the mounting block 17, the lower connecting rod 13 is respectively connected and assembled with the small end 11 of the lower connecting rod through the mounting block 17 and the mounting groove 5, and the upper connecting rod 15 is connected and assembled with the big end 1 of the lower connecting rod through the mounting block 17 and the mounting groove 5. Then, the bolt 9 is passed through the first round hole 6 and extended into the inner cavity of the second threaded hole 18 formed on the front side of the mounting block 17 to fix the assembled mounting block 17, the small end 11 of the lower connecting rod and the big end 1 of the lower connecting rod. After all the assemblies are completed, the assembled device is installed at the position to be used on the engine. At this time, by means of the slider 16 and the sliding groove 14, the distance between the big end 2 and the small end 12 of the upper connecting rod can be changed to meet the use of different engines. When damage occurs, only the bolt 9 at the damaged part needs to be disassembled, and the whole device can be divided into three sections, namely the big end section including the big end 2 of the upper connecting rod and the big end 1 of the lower connecting rod, the connecting rod section including the upper connecting rod 15 and the lower connecting rod 13, and the small end section including the small end 12 of the upper connecting rod and the small end 11 of the lower connecting rod. Then, the damaged area can be replaced, and the undamaged area is retained to avoid waste of materials.

[0029] In summary, compared with general similar devices, the engine connecting rod of the present invention has the advantage that different components at different positions can be quickly replaced to meet the use of different engines.

[0030] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An engine connecting rod, characterized in that, It includes the big end of the lower connecting rod (1) and the small end of the lower connecting rod (11). The top of the big end of the lower connecting rod (1) is detachably installed with the big end of the upper connecting rod (2). Multiple bumps (3) are fixedly installed on the top of the big end of the lower connecting rod (1). Multiple first threaded holes (4) are opened on the top of the bumps (3). An installation groove (5) is opened on the right side of the rear side of the big end of the lower connecting rod (1). A first round hole (6) is opened on the right side of the front side of the big end of the lower connecting rod (1). Multiple grooves (7) are opened on the bottom of the big end of the upper connecting rod (2). Multiple second round holes (8) are opened on the top of the big end of the upper connecting rod (2). A bolt (9) is detachably installed in the inner cavity of the second round hole (8). A connecting piece (10) is fixedly installed in the inner cavity of the big end of the upper connecting rod (2). The top of the small end of the lower connecting rod (11) is detachably installed with the small end of the upper connecting rod (12).

2. The engine connecting rod according to claim 1, wherein The left side of the small end of the lower connecting rod (11) is detachably installed with a lower connecting rod (13). A sliding groove (14) is opened on the top of the lower connecting rod (13). An upper connecting rod (15) is slidably installed on the top of the lower connecting rod (13). A slider (16) is fixedly installed on the bottom of the upper connecting rod (15). Mounting blocks (17) are fixedly installed on the right side of the lower connecting rod (13) and the left side of the upper connecting rod (15). A second threaded hole (18) is opened on the front side of the mounting block (17).

3. The engine connecting rod according to claim 1, wherein The shape of the outer surface of the bump (3) matches the shape of the inner cavity of the groove (7). The position and quantity of the bumps (3) match the position and quantity of the grooves (7).

4. The engine connecting rod according to claim 2, characterized in that, The shape of the inner cavity of the installation groove (5) matches the shape of the outer surface of the mounting block (17). The installation groove (5) is opened on the right side of the rear side of the big end of the lower connecting rod (1) and the left side of the rear side of the small end of the lower connecting rod (11).

5. The engine connecting rod according to claim 2, characterized in that, The first round hole (6) does not penetrate into the inner cavity of the installation groove (5). The bolt (9) includes a nut and a screw rod. The shape and thickness of the outer surface of the nut match the shape and thickness of the inner cavity of the first round hole (6). A through hole is opened at the bottom of the first round hole (6), and the through hole penetrates into the inner cavity of the second threaded hole (18). The outer surface diameter of the screw rod matches the inner cavity diameters of the through hole and the second threaded hole (18). Threads matching the shape and size of the inner wall of the second threaded hole (18) are opened on the outer surface of the bolt (9).

6. The engine connecting rod according to claim 1, characterized in that, The second round holes (8) are distributed on the top of the grooves (7). The second round holes (8) do not penetrate into the inner cavity of the grooves (7). A through hole is opened at the bottom of the second round hole (8), and the through hole penetrates into the grooves (7). The distribution position of the second round holes (8) matches the position of the first threaded holes (4). The outer surface diameter of the bottom of the bolt (9) and the inner cavity diameter of the through hole both match the inner cavity diameter of the first threaded hole (4). Threads matching the shape of the inner wall of the first threaded hole (4) are opened on the outer surface of the bolt (9).

7. The engine connecting rod according to claim 1, characterized in that, The structures between the big end of the upper connecting rod (2) and the big end of the lower connecting rod (1) and between the small end of the upper connecting rod (12) and the small end of the lower connecting rod (11) are completely the same. A sealing gasket is provided at the bottom of the bolt (9). The shape of the inner cavity of the connecting piece (10) matches the shape of the outer surface of the installation location during use.

8. The engine connecting rod according to claim 2, wherein The cross-sectional shapes of the inner cavity of the chute (14) and the slider (16) are both irregular figures, and the bottom of the upper connecting rod (15) is movably connected to the lower connecting rod (13) through the slider (16) and the chute (14).

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