Crankshaft with high impact toughness

Abstract

The utility model relates to the technical field of crankshafts, and discloses a crankshaft with high impact toughness, which comprises a front journal and an assembling mechanism arranged on one side of the front journal, the assembling mechanism comprises a front crank and a rear crank which are arranged on one side of the front journal, a connecting shaft is arranged between the front crank and the rear crank, and the connecting shaft is connected with the front journal. An oil hole and a graphite sheet are arranged on the inner wall of the connecting shaft, first threaded holes are formed in the inner walls of the front crank and the rear crank, one end of the connecting shaft is in threaded connection with the inner walls of the first threaded holes, second threaded holes are formed in the inner walls of the rear crank and the connecting shaft, and bolts are in threaded connection with the inner walls of the second threaded holes. An oil storage cavity is formed in the connecting shaft, reinforcing ribs are fixed to the inner wall of the oil storage cavity, and the problems that after an existing crankshaft is assembled and connected, the crank rotates for a long time, the crank and the connecting shaft are prone to loosening, the structural stability of the crankshaft is reduced, the impact resistance of the crankshaft is reduced, and the service life of the crankshaft is shortened are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshafts, in particular to a crankshaft with high impact toughness. Background Art

[0002] The crankshaft is a key component in the engine that converts the reciprocating linear motion of the piston into rotational motion. It is usually made of high-quality steel or iron and has high strength and rigidity. The main function of the crankshaft is to convert the reciprocating linear motion of the piston into rotational motion through the connecting rod, thereby driving other parts of the engine, such as the camshaft, water pump, etc. Store and release energy. Near the top dead center of the piston, the crankshaft can store energy and release this energy to the piston near the bottom dead center, allowing it to continue to move upward. Through its rotational motion, the crankshaft can also keep the engine running smoothly. There is usually a pulley or chain wheel at the front end of the crankshaft to drive the valve mechanism and other auxiliary equipment.

[0003] During the use of the crankshaft, the ignition system and gasoline will have a certain impact on the crankshaft after ignition. Long-term impact may damage the crankshaft. When installing the existing crankshaft, multiple sets of front cranks, rear cranks and connecting shafts are assembled and connected. After the connection, when the crank rotates for a long time, the crank and the connecting shaft are prone to loosening, resulting in reduced stability of the crankshaft structure, which in turn causes the crankshaft's impact resistance to decrease, reducing the crankshaft's service life. Utility Model Content

[0004] The purpose of the utility model is to provide a crankshaft with high impact toughness to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a crankshaft with high impact toughness, including a front journal, and also including:

[0006] A plurality of assembly mechanisms are arranged on one side of the front journal to improve impact resistance, the assembly mechanisms comprising a front crank and a rear crank arranged on one side of the front journal, a connecting shaft is arranged between the front crank and the rear crank, the inner walls of the connecting shaft are respectively provided with oil holes and graphite sheets, the inner walls of the front crank and the rear crank are both provided with a first threaded hole, one end of the connecting shaft is threadedly connected to the inner wall of the first threaded hole, the inner walls of the rear crank and the connecting shaft are both provided with a second threaded hole, the inner walls of the second threaded hole are threadedly connected with bolts, an oil storage cavity is provided inside the connecting shaft, and a reinforcing rib is fixed to the inner wall of the oil storage cavity.

[0007] Preferably, a limiting hole is provided on one side of the rear crank, a limiting cover is clamped on the inner wall of the limiting hole, and the limiting cover is fixed to one end of the bolt.

[0008] Preferably, a front connecting rod is fixed to one side of the front journal, and a timing gear is provided at one end of the front connecting rod.

[0009] Preferably, a pulley is fixed at the axis of the timing gear, and a belt groove is formed on the inner wall of the pulley.

[0010] Preferably, a rear journal is provided at one end of the rightmost connecting shaft in the assembly mechanism, a rear connecting rod is fixed to one side of the rear journal, and a flywheel is provided at one end of the rear connecting rod.

[0011] Preferably, a positioning hole is formed on the inner wall of the flywheel, a positioning pin is clamped on the inner wall of the positioning hole, and the positioning pin is fixed to one end of the rear connecting rod.

[0012] Preferably, the inner walls of the positioning hole and the positioning pin are both provided with a third threaded hole, and the inner wall of the third threaded hole is threadedly connected with a screw.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model can quickly connect and assemble multiple groups of front cranks, rear cranks and connecting shafts in the crankshaft by arranging an assembly mechanism, and is easy to disassemble. After the front crank, rear crank and connecting shaft are connected, they are stable and not easy to loosen, so that the structural stability of the crankshaft is improved, thereby improving the impact resistance of the crankshaft and increasing the service life of the crankshaft. Strengthening ribs are added in the connecting shaft to further improve the impact resistance of the crankshaft. At the same time, oil holes and oil storage chambers are opened in the connecting shaft to maintain the overall lubrication effect of the crankshaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic structural diagram of a preferred embodiment of a crankshaft with high impact toughness provided by the utility model;

[0016] Figure 2 A structural schematic diagram of the assembly mechanism provided by the utility model;

[0017] Figure 3 This is a schematic diagram of the structure inside the connecting shaft provided by the utility model;

[0018] Figure 4 This is a schematic structural diagram of the connection between the rear connecting rod and the flywheel provided by the utility model.

[0019] In the figure: 1. front journal; 2. assembly mechanism; 21. front crank; 22. rear crank; 23. connecting shaft; 24. oil hole; 25. graphite sheet; 26. first threaded hole; 27. second threaded hole; 28. bolt; 29. ​​oil storage chamber; 210. reinforcing rib; 211. limit hole; 212. limit cover; 3. front connecting rod; 4. timing gear; 5. pulley; 6. belt groove; 7. rear journal; 8. rear connecting rod; 9. flywheel; 10. positioning hole; 11. positioning pin; 12. third threaded hole; 13. screw. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4As shown, a crankshaft with high impact toughness includes a front journal 1, by which an assembly mechanism 2 and a front connecting rod 3 can be connected; it also includes a plurality of assembly mechanisms 2 arranged on one side of the front journal 1 for improving impact resistance, by which the overall impact resistance of the crankshaft can be improved; the assembly mechanism 2 includes a front crank 21 and a rear crank 22 arranged on one side of the front journal 1, by which a connecting shaft 23 can be installed; a connecting shaft 23 is arranged between the front crank 21 and the rear crank 22, by which the front crank 21 and the rear crank 22 can be connected and fixed, thereby improving the stability of the connection and further improving the impact resistance; the inner wall of the connecting shaft 23 is respectively provided with oil holes 24 and graphite sheets 25, by providing the oil holes 24, it is convenient to pour lubricating oil into the connecting shaft 23 to improve the lubrication effect, by providing the graphite sheets 25, the friction during rotation can be reduced, thereby improving the rotation effect and improving Impact resistance; the inner walls of the front crank 21 and the rear crank 22 are both provided with a first threaded hole 26, and one end of the connecting shaft 23 is threadedly connected to the inner wall of the first threaded hole 26. By providing the first threaded hole 26, the connecting shaft 23 can be easily connected to the front crank 21; the inner walls of the rear crank 22 and the connecting shaft 23 are both provided with a second threaded hole 27, and by providing the second threaded hole 27, it is convenient to connect the bolt 28 thereto; the inner wall of the second threaded hole 27 is threadedly connected with a bolt 28, and by providing the bolt 28, the rear crank 22 and the connecting shaft 23 can be easily connected and fixed, thereby improving the stability of the connection; an oil storage chamber 29 is provided inside the connecting shaft 23, and by providing the oil storage chamber 29, lubricating oil can be stored in the connecting shaft 23, so that the connecting shaft 23 is always in a lubricated state; a reinforcing rib 210 is fixed to the inner wall of the oil storage chamber 29, and by providing the reinforcing rib 210, the impact resistance of the connecting shaft 23 can be improved, thereby improving the impact resistance of the crankshaft as a whole.

[0022] See also Figure 2 As shown, a limiting hole 211 is provided on one side of the rear crank 22, and the limiting hole 211 can be provided to facilitate limiting the movement of the limiting cover 212; the limiting cover 212 is clamped on the inner wall of the limiting hole 211, and the limiting cover 212 is fixed to one end of the bolt 28. The limiting cover 212 can be rotated to drive the bolt 28 to rotate, and a cross opening is provided on one side of the limiting cover 212 to facilitate the screwdriver to drive it to rotate.

[0023] See also Figure 1 and Figure 4As shown, a front connecting rod 3 is fixed to one side of the front journal 1, and the timing gear 4 can be connected by setting the front connecting rod 3; a timing gear 4 is set at one end of the front connecting rod 3, and the timing gear 4 can be used to drive the pulley 5 to rotate; a pulley 5 is fixed at the axis of the timing gear 4, and other equipment parts can be driven to rotate by setting the pulley 5; a belt groove 6 is opened on the inner wall of the pulley 5, and a transmission belt can be installed by setting the belt groove 6; a rear journal 7 is set at one end of the rightmost connecting shaft 23 in the assembly mechanism 2, and the assembly mechanism 2 and the rear connecting rod 8 can be connected by setting the rear journal 7; a rear connecting rod 8 is fixed to one side of the rear journal 7, and the rear connecting rod 8 can be used to connect Flywheel 9; a flywheel 9 is provided at one end of the rear connecting rod 8, and the assembly mechanism 2 can be driven to rotate by setting the rear connecting rod 8; a positioning hole 10 is opened on the inner wall of the flywheel 9, and the positioning hole 10 can facilitate the connection with the positioning pin 11; a positioning pin 11 is clamped on the inner wall of the positioning hole 10, and the positioning pin 11 is fixed to one end of the rear connecting rod 8, and the rear connecting rod 8 and the flywheel 9 can be connected by setting the positioning pin 11; a third threaded hole 12 is opened on the inner wall of the positioning hole 10 and the positioning pin 11, and a screw 13 is threadedly connected to the inner wall of the third threaded hole 12, and the rear connecting rod 8 and the flywheel 9 can be fixed after being connected by setting the third threaded hole 12 and the screw 13, and it is convenient to disassemble.

[0024] Working principle: The worker connects each front crank 21 and the rear crank 22 through the connecting shaft 23. When connecting, first thread one end of the connecting shaft 23 is threadedly connected to the first threaded hole 26 in the front crank 21, and then the bolt 28 is used to connect with the second threaded hole 27 to fix the rear crank 22 and the connecting shaft 23. When rotating the bolt 28, a screwdriver can be used to rotate the limit cover 212 through the cross mouth to drive the bolt 28 to rotate. After the front crank 21, the rear crank 22 and the connecting shaft 23 are all installed, connect the connecting shaft 23 to the front journal 1 and the rear journal 7 on both sides, and finally pour lubricating oil into the connecting shaft 23 through the oil hole 24. The lubricating oil is stored in the oil storage chamber 29. A reinforcing rib 210 is fixed in the oil storage chamber 29. The crankshaft has extremely high impact resistance through the reinforcing rib 210 and the stable connection between the front crank 21, the rear crank 22 and the connecting shaft 23.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A crankshaft with high impact toughness, comprising a front journal (1), characterized in that: Also includes: A plurality of assembly mechanisms (2) are arranged on one side of the front journal (1) for improving impact resistance, the assembly mechanisms (2) comprising a front crank (21) and a rear crank (22) arranged on one side of the front journal (1), a connecting shaft (23) being arranged between the front crank (21) and the rear crank (22), an inner wall of the connecting shaft (23) being respectively provided with an oil hole (24) and a graphite sheet (25), and the front crank (21) and the rear crank (22) being provided with a plurality of assembly mechanisms (2) for improving impact resistance. A first threaded hole (26) is provided on the inner wall, one end of the connecting shaft (23) is threadedly connected to the inner wall of the first threaded hole (26), a second threaded hole (27) is provided on the inner wall of the rear crank (22) and the connecting shaft (23), a bolt (28) is threadedly connected to the inner wall of the second threaded hole (27), an oil storage chamber (29) is provided inside the connecting shaft (23), and a reinforcing rib (210) is fixed to the inner wall of the oil storage chamber (29).

2. A crankshaft with high impact toughness according to claim 1, characterized in that: A limiting hole (211) is provided on one side of the rear crank (22), and a limiting cover (212) is clamped on the inner wall of the limiting hole (211), and the limiting cover (212) is fixed to one end of the bolt (28).

3. A crankshaft with high impact toughness according to claim 1, characterized in that: A front connecting rod (3) is fixed to one side of the front journal (1), and a timing gear (4) is provided at one end of the front connecting rod (3).

4. A crankshaft with high impact toughness according to claim 3, characterized in that: A belt pulley (5) is fixed at the axis of the timing gear (4), and a belt groove (6) is provided on the inner wall of the belt pulley (5).

5. A crankshaft with high impact toughness according to claim 1, characterized in that: A rear journal (7) is provided at one end of the rightmost connecting shaft (23) in the assembly mechanism (2), a rear connecting rod (8) is fixed to one side of the rear journal (7), and a flywheel (9) is provided at one end of the rear connecting rod (8).

6. A crankshaft with high impact toughness according to claim 5, characterized in that: The inner wall of the flywheel (9) is provided with a positioning hole (10), the inner wall of the positioning hole (10) is clamped with a positioning pin (11), and the positioning pin (11) is fixed to one end of the rear connecting rod (8).

7. A crankshaft with high impact toughness according to claim 6, characterized in that: The inner walls of the positioning hole (10) and the positioning pin (11) are both provided with a third threaded hole (12), and the inner wall of the third threaded hole (12) is threadedly connected with a screw (13).

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