Crankshaft with vibration reduction structure

Abstract

The utility model relates to the field of crankshafts, and discloses a crankshaft with a vibration reduction structure, comprising a crankshaft main body, a crankshaft flywheel end, a crankshaft transmission end, a connecting tube and a placing tube, two connecting tubes are arranged at both ends of the crankshaft main body, and one end of the crankshaft main body passes through the connecting tube and is fixedly connected to the crankshaft flywheel end, and the other end of the crankshaft main body passes through another connecting tube and is fixedly connected to the crankshaft transmission end, the outer surfaces of the two connecting tubes are movably connected to two placing tubes, and further include: a damping device for reducing vibration of the crankshaft main body is arranged inside the placing tube; two connecting components for installing the damping device are arranged on the outer surfaces of the two connecting tubes. The utility model has a compact and reasonable structural design, solves the problem that the existing crankshaft has no vibration reduction structure, and reduces the influence of vibration on the crankshaft.

Description

Technical Field

[0001] The utility model relates to the field of crankshafts, in particular to a crankshaft with a vibration reduction structure. Background Art

[0002] The crankshaft is a vital component in the engine. Its design is complex and the technical requirements are high, so the processing technology is difficult. The main function of the crankshaft is to bear the force transmitted by the connecting rod and convert it into torque, which is output through the crankshaft and drives other accessories on the engine to work. During the rotation cycle, the crankshaft converts the kinetic energy of the gas internal combustion engine into working energy through the movement of the connecting rod and the piston, and then drives various mechanical devices, such as the rotation of the wheels of the car, the navigation of the ship, and the power output of the power station. The structural characteristics of the crankshaft are significant. It is a fixed shaft with a diameter and length greater than the reciprocating motion of the power machine. Under the combined action of the centrifugal force of the rotating mass, the periodically changing gas inertia force and the reciprocating inertia force, the crankshaft will be subjected to bending and torsion loads. Therefore, the crankshaft needs to have sufficient strength and rigidity, and its journal surface needs to be wear-resistant, work evenly and have good balance. As the core component of the engine, the crankshaft plays a pivotal role in the field of machinery. With the continuous advancement of technology and changes in market demand, the design and manufacture of crankshafts are also constantly developing and improving.

[0003] However, the existing crankshaft does not have a vibration reduction structure, so the vibration generated by the crankshaft working on the chassis causes the crankshaft to shake on the chassis, which is easy to cause damage to the crankshaft. For this reason, we propose a crankshaft with a vibration reduction structure. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a crankshaft with a vibration reduction structure to solve the above-mentioned problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a crankshaft with a vibration reduction structure, comprising a crankshaft body, a crankshaft flywheel end, a crankshaft transmission end, a connecting tube and a placement tube, two connecting tubes are arranged at both ends of the crankshaft body, and one end of the crankshaft body passes through the connecting tube and is fixedly connected to the crankshaft flywheel end, and the other end of the crankshaft body passes through another connecting tube and is fixedly connected to the crankshaft transmission end, and the outer surfaces of the two connecting tubes are movably connected to two placement tubes, and also includes:

[0006] The outer surfaces of the two connecting cylinders are provided with two connecting members for installing the damping device, and the two connecting members each include a fixing plate, a connecting triangle plate and a limiting plate. The outer surface of the connecting cylinder is fixedly connected to the limiting plate, and the outer surface of the connecting cylinder corresponding to one side of the limiting plate is fixedly connected to the fixing plate, and the inner wall of the placing cylinder is fixedly connected to the connecting triangle plate;

[0007] A damping device for reducing vibration of the crankshaft body is arranged inside the placing cylinder. The three damping devices include a shock-absorbing cylinder, a shock-absorbing spring, a piston, a shock-absorbing rod, a support rod and a connecting block. One end of the connecting block is movably connected between a group of fixed plates, and the other end of the connecting block is fixedly connected to the shock-absorbing cylinder, the inner wall of the shock-absorbing cylinder is fixedly connected to the shock-absorbing spring, one end of the shock-absorbing spring is fixedly connected to the piston, one end of the piston is fixedly connected to the shock-absorbing rod, and the inner wall of the shock-absorbing cylinder corresponding to the inside of the shock-absorbing spring is fixedly connected to the support rod.

[0008] Preferably, three groups of the fixing plates and the connecting triangular plates are provided, and the three groups of fixing plates are arranged in a triangle on the outer surface of the connecting tube, and the three groups of connecting triangular plates are arranged in a triangle on the inner wall of the placement tube, and three damping devices are provided between the three groups of fixing plates and the three groups of connecting triangular plates.

[0009] Preferably, the limiting plate is cylindrical and is located between the connecting tube and the placing tube, and there is a distance of mm between the outer surface of the limiting plate and the inner wall of the placing tube, and the outer surface of the limiting plate is movably connected to the inside of the placing tube.

[0010] Preferably, a movable groove is formed at one end of the shock absorbing rod, and one end of the support rod passes through the piston and is movably connected to the movable groove formed in the shock absorbing rod.

[0011] Preferably, the three connecting blocks are movably connected to three groups of fixed plates respectively, and one end of the three shock-absorbing rods is movably connected to three groups of connecting triangle plates.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] (1) The crankshaft with a vibration-damping structure is affected by the vibration force through the shock-damping rod and moves inside the shock-damping cylinder, so that the piston fixedly connected to the shock-damping rod squeezes the shock-damping spring inside the shock-damping cylinder. Then, the elasticity of the shock-damping spring eliminates the vibration force on the shock-damping rod, thereby reducing the vibration force on the connecting cylinder, reducing the influence of the generated vibration force on the crankshaft body, thereby preventing the crankshaft body from shaking due to the vibration force during rotation and causing damage by collision with the chassis.

[0014] (2) The crankshaft with a vibration-damping structure uses a limit plate to prevent the damping spring from being excessively deflected due to excessive extrusion of the placement tube during the process of the placement tube squeezing the damping spring through the connecting triangle plate. As a result, the outer surface of the limit plate contacts the inner wall of the placement tube, making it impossible for the placement tube to be deflected. This prevents the placement tube from being excessively deflected due to the vibration squeezing damping device, causing the placement tube to drive the crankshaft body to shake through the connecting tube and cause damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a side structural schematic diagram of the crankshaft of the utility model;

[0017] Figure 3 This is a schematic diagram of the connection component of the utility model;

[0018] Figure 4 It is a cross-sectional schematic diagram of the damping device of the utility model.

[0019] In the figure: 1. crankshaft body; 2. crankshaft flywheel end; 3. crankshaft transmission end; 4. connecting cylinder; 5. placing cylinder; 6. fixing plate; 7. connecting triangle plate; 8. shock-absorbing cylinder; 9. shock-absorbing spring; 10. piston; 11. shock-absorbing rod; 12. support rod; 13. connecting block; 14. limit plate. 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 1-4 A crankshaft with a vibration reduction structure comprises a crankshaft body 1, a crankshaft flywheel end 2, a crankshaft transmission end 3, a connecting tube 4 and a placing tube 5, two connecting tubes 4 are arranged at both ends of the crankshaft body 1, and one end of the crankshaft body 1 passes through the connecting tube 4 and is fixedly connected to the crankshaft flywheel end 2, and the other end of the crankshaft body 1 passes through another connecting tube 4 and is fixedly connected to the crankshaft transmission end 3, and the outer surfaces of the two connecting tubes 4 are movably connected to two placing tubes 5, and further comprises:

[0022] The outer surfaces of the two connecting cylinders 4 are provided with two connecting members for installing the damping device, and the two connecting members each include a fixing plate 6, a connecting triangular plate 7 and a limiting plate 14. The outer surface of the connecting cylinder 4 is fixedly connected to the limiting plate 14, and the outer surface of the connecting cylinder 4 is fixedly connected to the fixing plate 6 on one side corresponding to the limiting plate 14, and the inner wall of the placing cylinder 5 is fixedly connected to the connecting triangular plate 7;

[0023] A damping device for reducing vibration of the crankshaft body 1 is arranged inside the placement cylinder 5. The three damping devices include a shock-absorbing cylinder 8, a shock-absorbing spring 9, a piston 10, a shock-absorbing rod 11, a support rod 12 and a connecting block 13. One end of the connecting block 13 is movably connected between a group of fixed plates 6, and the other end of the connecting block 13 is fixedly connected to the shock-absorbing cylinder 8. The inner wall of the shock-absorbing cylinder 8 is fixedly connected to the shock-absorbing spring 9, one end of the shock-absorbing spring 9 is fixedly connected to the piston 10, one end of the piston 10 is fixedly connected to the shock-absorbing rod 11, and the inner wall of the shock-absorbing cylinder 8 is fixedly connected to the support rod 12 corresponding to the inside of the shock-absorbing spring 9.

[0024] Furthermore, three groups of fixing plates 6 and connecting triangular plates 7 are provided, and the three groups of fixing plates 6 are arranged in a triangle on the outer surface of the connecting tube 4, and the three groups of connecting triangular plates 7 are arranged in a triangle on the inner wall of the placement tube 5, and three damping devices are provided between the three groups of fixing plates 6 and the three groups of connecting triangular plates 7.

[0025] Furthermore, the limiting plate 14 is cylindrical, and is located between the connecting tube 4 and the placing tube 5, and there is a distance of 3 mm from the crankshaft transmission end between the outer surface of the limiting plate 14 and the inner wall of the placing tube 5, and the outer surface of the limiting plate 14 is movably connected to the inside of the placing tube 5.

[0026] Furthermore, a movable groove is formed at one end of the shock absorbing rod 11 , and one end of the support rod 12 passes through the piston 10 and is movably connected to the movable groove formed in the shock absorbing rod 11 .

[0027] Furthermore, the three connecting blocks 13 are movably connected to the three groups of fixing plates 6 respectively, and one end of the three shock absorbing rods 11 is movably connected to the three groups of connecting triangle plates 7 .

[0028] Working principle: when the crankshaft is required to work, first place the two placement cylinders 5 at the rotating position of the chassis, and then connect one end of the crankshaft driving end 3 to the driver, thereby driving the crankshaft driving end 3 to rotate, thereby driving the crankshaft body 1 to rotate through the connecting cylinder 4, and the connecting cylinder 4 drives the placement cylinder 5 to rotate on the chassis through the damping device, so that the crankshaft body 1 can rotate in the chassis, and then when the chassis is shaken and other factors produce vibration, the vibration force is transmitted to the connecting triangle plate 7 on its inner wall through the placement cylinder 5, so that the connecting triangle plate 7 transmits the vibration force to the shock absorbing rod 11, so that the shock absorbing rod 11 is affected by the vibration force and moves inside the shock absorbing cylinder 8, so that the piston 10 fixedly connected to the shock absorbing rod 11 inside the shock absorbing cylinder 8 The shock absorbing spring 9 is The outer surface of the limiting plate 14 contacts the inner wall of the placing tube 5, so that the placing tube 5 can no longer be offset, and the placing tube 5 can be prevented from being damaged by shaking of the crankshaft body 1 due to the vibration force caused by the vibration force during the rotation.

[0029] 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 a vibration reduction structure, comprising a crankshaft body (1), a crankshaft flywheel end (2), a crankshaft transmission end (3), a connecting tube (4) and a placement tube (5), wherein two connecting tubes (4) are arranged at both ends of the crankshaft body (1), and one end of the crankshaft body (1) passes through the connecting tube (4) and is fixedly connected to the crankshaft flywheel end (2), and the other end of the crankshaft body (1) passes through another connecting tube (4) and is fixedly connected to the crankshaft transmission end (3), and the outer surfaces of the two connecting tubes (4) are movably connected to two placement tubes (5), characterized in that: Also includes: Two connecting members for mounting a damping device are arranged on the outer surfaces of the two connecting cylinders (4), and the two connecting members each comprise a fixing plate (6), a connecting triangular plate (7) and a limiting plate (14); the outer surface of the connecting cylinder (4) is fixedly connected to the limiting plate (14), and the fixing plate (6) is fixedly connected to one side of the outer surface of the connecting cylinder (4) corresponding to the limiting plate (14); and the inner wall of the placement cylinder (5) is fixedly connected to the connecting triangular plate (7); A damping device for reducing vibration of the crankshaft body (1) is arranged inside the placement cylinder (5). The three damping devices each comprise a damping cylinder (8), a damping spring (9), a piston (10), a damping rod (11), a support rod (12) and a connecting block (13). One end of the connecting block (13) is movably connected between a group of fixed plates (6), and the other end of the connecting block (13) is fixedly connected to the damping cylinder (8). The inner wall of the damping cylinder (8) is fixedly connected to the damping spring (9). One end of the damping spring (9) is fixedly connected to the piston (10). One end of the piston (10) is fixedly connected to the damping rod (11). The inner wall of the damping cylinder (8) corresponding to the inside of the damping spring (9) is fixedly connected to the support rod (12).

2. The crankshaft with a vibration reduction structure according to claim 1, characterized in that: The fixing plates (6) and the connecting triangular plates (7) are each provided in three groups, and the three groups of fixing plates (6) are arranged in a triangular shape on the outer surface of the connecting tube (4), and the three groups of connecting triangular plates (7) are arranged in a triangular shape on the inner wall of the placing tube (5), and three damping devices are provided between the three groups of fixing plates (6) and the three groups of connecting triangular plates (7).

3. The crankshaft with a vibration reduction structure according to claim 1, characterized in that: The limiting plate (14) is cylindrical and is located between the connecting tube (4) and the placing tube (5). There is a distance of 3 mm between the outer surface of the limiting plate (14) and the inner wall of the placing tube (5). The outer surface of the limiting plate (14) is movably connected to the inside of the placing tube (5).

4. The crankshaft with a vibration reduction structure according to claim 1, characterized in that: One end of the shock absorbing rod (11) is provided with a movable groove, and one end of the support rod (12) passes through the piston (10) and is movably connected inside the movable groove provided in the shock absorbing rod (11).

5. The crankshaft with a vibration reduction structure according to claim 1, characterized in that: The three connecting blocks (13) are respectively movably connected to three groups of fixed plates (6), and one end of the three shock-absorbing rods (11) is movably connected to three groups of connecting triangle plates (7).

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