Crankshaft assembly

Abstract

The utility model relates to the technical field of engine parts, in particular to a crankshaft assembly which comprises a main journal, a shaft head end, a flange end, a piston, balancing weights and a connecting rod journal, the balancing weights are connected through the main journal and the connecting rod journal, the main journal is located in the center of the balancing weights, and the connecting rod journal is located at the ends of the balancing weights. A second semicircular sleeve block and a first semicircular sleeve block are arranged on the connecting rod journal in a sleeving mode, neck bushes are arranged on the inner wall of the first semicircular sleeve block and the inner wall of the first semicircular sleeve block, internal thread blocks are arranged at the two ends of the first semicircular sleeve block and the two ends of the second semicircular sleeve block, and locking screws are arranged in the internal thread blocks. The first semicircular sleeve block and the second semicircular sleeve block are fastened and connected through a locking screw; and a structure capable of conveniently disassembling and separating the piston is arranged, so that single-end replacement can be performed on the piston part, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of engine components, in particular to a crankshaft assembly. Background Art

[0002] The crankshaft is one of the important parts in some mechanical equipment such as internal combustion engines and diesel engines. It is a long shaft, usually located at the bottom of the engine, and rotates inside the engine. The main function of the crankshaft is to convert the reciprocating motion transmitted from the piston into rotational motion, thereby driving the output shaft of the engine. The crankshaft usually includes a main journal, a connecting rod journal, a shaft head end and a flange end, and the connecting rod journal is usually sleeved with a piston.

[0003] In the past, the piston sleeved on the connecting rod journal was an integral setting, which made it inconvenient to replace the piston part separately when damaged. The crankshaft had to be replaced as a whole, which resulted in high maintenance costs. Utility Model Content

[0004] In view of the problems in the prior art, the utility model provides a crankshaft assembly having a structure that can facilitate the disassembly and separation of the piston, so that the piston part can be replaced at one end, thereby reducing maintenance costs.

[0005] The technical solution adopted by the utility model to solve the technical problem is a crankshaft assembly, including a main journal, a shaft head end, a flange end, a piston, a counterweight and a connecting rod journal, the counterweights are connected through the main journal and the connecting rod journal, the main journal is located at the center of the counterweight, and the connecting rod journal is located at the end of the counterweight;

[0006] The connecting rod journal is sleeved with a second semicircular block and a first semicircular block, the inner walls of the first semicircular block and the first semicircular block are provided with inner sleeves, both ends of the first semicircular block and the second semicircular block are provided with internal thread blocks, locking screws are provided in the internal thread blocks, the first semicircular block and the second semicircular block are fastened together by locking screws, the threaded head and nut of the locking screw are close to the internal thread block and anti-slip washers are provided, the top of the second semicircular block is connected to the second block through a rotating arm, the second block is sleeved with a cylindrical clamping block, both ends of the piston are provided with clamping grooves, and both ends of the cylindrical clamping block are clamped in the corresponding clamping grooves.

[0007] By adopting the above technical scheme, the first semicircular sleeve block and the second semicircular sleeve block are conveniently connected to form a circular sleeve block through the locking screw, and the circular sleeve block is arranged on the outside of the connecting rod journal through the inner sleeve, so that the rotating arm can rotate around the connecting rod journal, and the two groups of internal threaded blocks can be conveniently separated by loosening the locking screw, so that the first semicircular sleeve block and the second semicircular sleeve block can be separated. This crankshaft assembly is convenient for replacing the piston part separately, which effectively reduces the cost of maintenance.

[0008] Specifically, a sealing ring is installed on the inner wall of the card slot through a reserved groove, and the sealing ring is sleeved on the outer periphery of the columnar card block.

[0009] By adopting the above technical solution, the sealing effect between the columnar card block and the card slot can be effectively improved through the sealing ring.

[0010] Specifically, a weight-reducing groove is provided on the rotating arm.

[0011] Specifically, an annular sealing groove is provided on the periphery of the top end of the piston.

[0012] Specifically, a connection hole is formed through one end of the flange near the edge.

[0013] By adopting the above technical solution, the flange end is conveniently connected to the engine flywheel by passing the external screw through the connection hole.

[0014] Beneficial effects of the utility model:

[0015] (1) The crankshaft assembly described in the utility model can separate the two sets of internal threaded blocks by loosening the locking screws, thereby allowing the first semicircular sleeve block to be separated from the second semicircular sleeve block. The crankshaft assembly is convenient for replacing the piston part separately, effectively reducing the maintenance cost.

[0016] (2) In the crankshaft assembly described in the present invention, the external rubber sealing ring is clamped in the annular sealing groove, and the piston is inserted into the engine cylinder body, thereby improving the sealing effect between the piston and the engine cylinder body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

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

[0019] Figure 2 It is an overall schematic diagram of the utility model after the first semicircular sleeve block, the second semicircular sleeve block, the rotating arm and the piston are disassembled;

[0020] Figure 3It is a detailed structural diagram of the piston, the rotating arm, the first semicircular sleeve block and the second semicircular sleeve block of the utility model;

[0021] Figure 4 It is a schematic diagram of a cutaway view of the piston of the utility model.

[0022] In the figure: 1. main journal; 2. shaft head end; 3. flange end; 4. connecting hole; 5. first semicircular sleeve block; 6. second semicircular sleeve block; 7. rotating arm; 8. internal thread block; 9. locking screw; 10. piston; 11. annular sealing groove; 12. slot; 13. cylindrical clamping block; 14. second sleeve block; 15. sealing ring; 16. weight reduction groove; 17. balance weight; 18. inner bushing; 19. anti-skid washer; 20. connecting rod journal. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] In order to enable the piston part of the crankshaft assembly to be disassembled and replaced from the connecting rod journal, the maintenance cost is reduced. Figure 1-4 As shown, a crankshaft assembly described in the utility model includes a main journal 1, a shaft head end 2, a flange end 3, a piston 10, a counterweight 17 and a connecting rod journal 20, the counterweight 17 is connected through the main journal 1 and the connecting rod journal 20, the main journal 1 is located at the center of the counterweight 17, and the connecting rod journal 20 is located at the end of the counterweight 17;

[0025] The connecting rod journal 20 is sleeved with a second semicircular sleeve block 6 and a first semicircular sleeve block 5, and the inner walls of the first semicircular sleeve block 5 and the first semicircular sleeve block 5 are both provided with inner sleeves 18, and both ends of the first semicircular sleeve block 5 and the second semicircular sleeve block 6 are provided with internal thread blocks 8, and locking screws 9 are provided in the internal thread blocks 8. The first semicircular sleeve block 5 and the second semicircular sleeve block 6 are fastened and connected by locking screws 9, and anti-slip washers 19 are provided at the threaded head and nut of the locking screw 9 near the internal thread block 8. The top of the second semicircular sleeve block 6 is connected with a second sleeve block 14 through a rotating arm 7, and a cylindrical clamping block 13 is sleeved in the second sleeve block 14. Both ends of the piston 10 are provided with clamping grooves 12, and both ends of the cylindrical clamping block 13 are clamped in the corresponding clamping grooves 12.

[0026] When in use, the first semicircular sleeve block 5 and the second semicircular sleeve block 6 are conveniently connected to form a circular sleeve block through the locking screw 9, and the circular sleeve block is sleeved on the outside of the connecting rod journal 20 through the inner sleeve 18, so that the rotating arm 7 can rotate around the connecting rod journal 20, and the cylindrical clamping block 13 is clamped in the clamping groove 12, and the second sleeve block 14 can rotate around the cylindrical clamping block 13, so that the piston 10 can rotate around the top of the rotating arm 7, and the two groups of internal threaded blocks 8 can be separated by loosening the locking screw 9, so that the first semicircular sleeve block 5 and the second semicircular sleeve block 6 can be separated. This crankshaft assembly is convenient for replacing the piston part separately, which effectively reduces the cost of maintenance.

[0027] For example, Figure 4 As shown, the utility model also includes that the inner wall of the card slot 12 is installed with a sealing ring 15 through a reserved groove, and the sealing ring 15 is sleeved on the outer periphery of the columnar card block 13.

[0028] When in use, the sealing ring 15 can effectively improve the sealing effect between the columnar block 13 and the card slot 12 .

[0029] In order to reduce the weight of the rotating arm 7, for example, Figure 3 and Figure 4 As shown, a weight-reducing groove 16 is provided on the rotating arm 7 .

[0030] When in use, the weight-reducing groove 16 can effectively reduce the overall weight of the building material rotating arm 7 .

[0031] In order to facilitate the installation of the rubber sealing ring, for example, Figure 1 , Figure 3 and Figure 4 As shown, the utility model also includes that an annular sealing groove 11 is provided on the periphery of the top end of the piston 10 .

[0032] When in use, the external rubber sealing ring is clamped in the annular sealing groove 11, and the piston 10 is inserted into the engine cylinder body, thereby improving the sealing effect between the piston 10 and the engine cylinder body.

[0033] In order to facilitate the connection between the crankshaft assembly and the external flywheel, for example, Figure 1 and Figure 2 As shown, the utility model also includes that a connecting hole 4 is formed through one end of the flange end 3 near the edge.

[0034] When in use, the flange end 3 is conveniently connected to the engine flywheel by passing an external screw through the connection hole 4.

[0035] When the utility model is in use, the flange end 3 is conveniently connected to the engine flywheel by passing the connecting hole 4 through the external screw, and the first semicircular sleeve block 5 and the second semicircular sleeve block 6 are conveniently connected to form a circular sleeve block by the locking screw 9. The circular sleeve block is sleeved on the outside of the connecting rod journal 20 by the inner bushing 18, so that the rotating arm 7 can rotate around the connecting rod journal 20, and the cylindrical clamping block 13 is clamped in the clamping groove 12, and the second sleeve block 14 can rotate around the cylindrical clamping block 13, so that the piston 10 can rotate around the top of the rotating arm 7. The two groups of internal thread blocks 8 are conveniently separated by loosening the locking screw 9, so that the first semicircular sleeve block 5 and the second semicircular sleeve block 6 can be separated. The crankshaft assembly is convenient for replacing the piston part separately, which effectively reduces the cost of maintenance;

[0036] The external rubber sealing ring is clamped in the annular sealing groove 11, and the piston 10 is inserted into the engine cylinder body, thereby improving the sealing effect between the piston 10 and the engine cylinder body;

[0037] The sealing ring 15 can effectively improve the sealing effect between the columnar block 13 and the card slot 12 .

[0038] In the description of the present utility model, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present utility model.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the present utility model, unless otherwise clearly specified and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection;

[0040] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A crankshaft assembly, characterized in that: The invention comprises a main journal (1), a shaft head end (2), a flange end (3), a piston (10), a balancing weight (17) and a connecting rod journal (20), wherein the balancing weight (17) is connected via the main journal (1) and the connecting rod journal (20), wherein the main journal (1) is located at the center of the balancing weight (17), and the connecting rod journal (20) is located at the end of the balancing weight (17); The connecting rod journal (20) is sleeved with a second semicircular sleeve block (6) and a first semicircular sleeve block (5); the inner walls of the first semicircular sleeve block (5) and the first semicircular sleeve block (5) are both provided with inner bushings (18); both ends of the first semicircular sleeve block (5) and the second semicircular sleeve block (6) are provided with internal thread blocks (8); the internal thread blocks (8) are provided with locking screws (9); the first semicircular sleeve block (5) and the second semicircular sleeve block (6) are locked by locking screws. The second semicircular sleeve (6) is connected to the inner thread block (8) by a screw (9) for fastening connection; the threaded head and the nut of the locking screw (9) are both provided with anti-skid washers (19) near the inner thread block (8); the top of the second semicircular sleeve block (6) is connected to the second sleeve block (14) through a rotating arm (7); a cylindrical clamping block (13) is sleeved in the second sleeve block (14); both ends of the piston (10) are provided with clamping grooves (12); both ends of the cylindrical clamping block (13) are clamped in the corresponding clamping grooves (12).

2. A crankshaft assembly according to claim 1, characterized in that: The inner wall of the clamping slot (12) is provided with a sealing ring (15) via a reserved groove, and the sealing ring (15) is sleeved on the periphery of the columnar clamping block (13).

3. A crankshaft assembly according to claim 1, characterized in that: The rotating arm (7) is provided with a weight-reducing groove (16).

4. A crankshaft assembly according to claim 1, characterized in that: An annular sealing groove (11) is formed on the periphery of the top end of the piston (10).

5. A crankshaft assembly according to claim 1, characterized in that: A connection hole (4) is formed through one end of the flange end (3) near the edge.

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