Elastic flywheel of engine
By designing the engine elastic flywheel and using the elastic plate and the buffer spring to buffer the moment of inertia, the problem of increasing torsional vibration amplitude during engine operation is solved and the reliability of the engine is improved.
Patent Information
- Application Number
- CN202421725865.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-07-19
AI Technical Summary
During the engine operation, due to the direct rigid connection between the power equipment and the engine, the torsional vibration amplitude increases, which may lead to crankshaft breakage and excessive temperature failure of the vibration absorber, and the engine reliability needs to be improved.
An engine elastic flywheel is designed, including a flywheel ring gear, an elastic plate and a flywheel disc. The flywheel ring gear is connected to the engine output mechanism through meshing. The elastic plate is connected to the power equipment input mechanism through a screw or other connection method, and a radial pulling strip and a cushioning spring are set to cushion the moment of inertia.
Through the buffering effect of the elastic plate and the buffering spring, the impact of the moment of inertia on the engine torsional vibration is reduced, the impact of sudden load on the engine is reduced, the probability of failure occurs, and the reliability of the engine is improved.
Smart Images
Figure CN222760224U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engine parts, in particular to an engine elastic flywheel. Background Art
[0002] The engine is a device that provides power for power equipment and is the heart of the power equipment. During the operation of the engine, the engine mixes air and fuel in a certain proportion, and draws the mixed gas into the cylinder during the intake stroke. The mixed gas is compressed, ignited and burned to generate heat energy. The high-temperature and high-pressure gas acts on the top of the piston to push the piston to move, thereby achieving work. The engine output mechanism is formed through the built-in connecting rod, crankshaft, and rotor mechanisms, and mechanical energy is output to the outside through the engine output mechanism. It is connected to the input mechanism of the power equipment through rotation to drive the power equipment to operate.
[0003] In the related technology, during the operation of the engine, the power equipment and the engine are directly rigidly connected, and the rotational inertia of the power equipment is directly attached to the engine's shaft system, which is inconsistent with the original torsional vibration parameters of the engine. The torsional vibration amplitude increases, resulting in an increase in the probability of crankshaft breakage, shock absorber failure due to excessive temperature, and other faults. There is also the possibility of severe impact on the engine due to sudden load changes. The possibility of engine failure is relatively high, and the engine reliability needs to be improved. Utility Model Content
[0004] In order to improve engine reliability, the present application provides an engine elastic flywheel.
[0005] The present application provides an engine elastic flywheel adopting the following technical solution:
[0006] An engine elastic flywheel comprises a flywheel ring gear, an elastic plate and a flywheel disc, wherein the flywheel ring gear, the elastic plate and the flywheel disc are connected together, the elastic plate is arranged between the flywheel ring gear and the flywheel disc, the flywheel ring gear is connected to the engine output mechanism, the elastic plate is connected to the power equipment input mechanism, and the elastic plate is provided with radial tension bars and buffer springs.
[0007] By adopting the above technical scheme, the flywheel gear ring is connected to the output mechanism of the engine by meshing, the elastic plate is connected to the input mechanism of the power equipment by a screw or other connection method, the input mechanism of the power equipment drives the power equipment to operate by rotation, the elastic plate can be a spring steel sheet to improve durability, and radial positioning is played by setting radial pull rods, and a buffer spring is set to play a circumferential torsion buffering role, the buffer spring can be a flat spiral spring to reduce the thickness and facilitate installation, the flywheel disc is used to balance the counterweight and improve the overall rigidity of the flywheel to improve durability, when in use, the output mechanism of the engine drives the flywheel gear ring to rotate, and drives the flywheel disc and the elastic plate to rotate, the rotation of the elastic plate drives the driving power equipment to operate through the input mechanism, and the elastic plate and the buffer spring arranged on the elastic plate buffer the rotational inertia, which can buffer the impact of sudden load on the engine crankshaft, reduce the impact of sudden load on the engine, and reduce the vibration amplitude of the engine output mechanism during the torsion process to put it in a safe atmosphere, reduce the probability of crankshaft breakage, shock absorber over-temperature failure and other failures, thereby reducing the possibility of engine failure and improving the reliability of the engine.
[0008] Preferably, the elastic plate is provided with a plurality of plates, and connecting rivets are provided between the elastic plates, and the connecting rivets are used to connect all the elastic plates together.
[0009] By adopting the above technical solution, multiple elastic plates are connected by rivets to provide a buffer for the connection between the engine output mechanism and the power equipment, and the force borne by the single elastic plate is alleviated, thereby improving the overall durability of the flywheel, reducing the possibility of damaging the elastic plate due to high force used between the engine output mechanism and the power equipment, and improving the overall durability of the elastic plate and the flywheel, thereby reducing the possibility of engine failure and further improving the reliability of the engine.
[0010] Preferably, the flywheel ring gear is provided with a first cover plate, and the flywheel disc is provided with a second cover plate, the first cover plate and the second cover plate are both connected to the elastic plate by connecting rivets, the elastic plate is arranged between the first cover plate and the second cover plate, and the second cover plate and the elastic plate are jointly connected to the power equipment input mechanism.
[0011] By adopting the above technical solution, by setting the first cover plate and the second cover plate, and connecting them on both sides of the elastic plate through rivets, the possibility of damage to the elastic plate caused by collision is reduced, the durability of the elastic plate is improved, thereby reducing the possibility of engine failure and further improving the reliability of the engine.
[0012] Preferably, the first cover plate is provided with a first gasket, the first gasket is arranged between the first cover plate and the elastic plate, and the first gasket is connected to the first cover plate and the elastic plate through connecting rivets.
[0013] By adopting the above technical solution, by arranging the first gasket between the first cover plate and the elastic plate, the space between the first cover plate and the elastic plate is increased, thereby improving the buffering and protection effect of the first cover plate, reducing the possibility of the first cover plate being deformed after being impacted and directly squeezing and damaging the elastic plate, and reducing the probability of damage to the elastic plate on one side of the engine output mechanism, thereby improving the durability of the elastic plate.
[0014] Preferably, the second cover plate is provided with a second gasket, the second gasket is arranged between the second cover plate and the elastic plate, and the second gasket is connected to the second cover plate and the elastic plate through connecting rivets.
[0015] By adopting the above technical solution, the space between the second cover plate and the elastic plate is increased by setting a second gasket, thereby reducing the possibility of the second cover plate deforming after impact and directly squeezing and damaging the elastic plate, reducing the probability of damage to the elastic plate at one end of the power equipment, and improving the durability of the elastic plate.
[0016] Preferably, the flywheel ring gear is provided with a first inner hole, the first cover plate is inserted into the first inner hole, the flywheel disc is provided with a second inner hole, and the second cover plate is inserted into the second inner hole.
[0017] By adopting the above technical solution, the first cover plate is inserted into the first inner hole and abuts against the inner wall of the first inner hole, thereby reducing the possibility of the first cover plate moving crooked and ensuring the protective performance of the first cover plate. The second cover plate is inserted into the second inner hole and abuts against the inner wall of the second inner hole, thereby reducing the possibility of the second cover plate moving crooked and ensuring the protective performance of the second cover plate.
[0018] Preferably, the flywheel disc is provided with a clearance groove, and the bottom wall of the clearance groove is provided with a positioning hole.
[0019] By adopting the above technical solution, when connecting the flywheel and the power equipment, the fixed protruding positioning block on the power equipment is inserted into the clearance groove for limiting, and at the same time, the elastic plug rod on the positioning block is inserted into the positioning hole, so as to align the flywheel and the power equipment in the horizontal direction, thereby improving the stability of the overall connection between the power equipment and the flywheel, and avoiding the skew of the flywheel affecting the use. In order to avoid the rigid connection to increase the load axial force, the positioning block on the power equipment can be rotatably set on the outer casing of the power equipment and is not connected to the input mechanism.
[0020] Preferably, the elastic plate is provided with a plurality of signal teeth.
[0021] By adopting the above technical solution, the signal tooth can cooperate with the photoelectric sensor on the engine or power equipment to measure the flywheel speed, so as to better monitor the operation of the flywheel.
[0022] In summary, the present application includes at least one of the following beneficial technical effects:
[0023] 1. By arranging a flywheel gear ring, an elastic plate, a flywheel disc, a radial tie rod and a buffer spring, the flywheel gear ring is connected to the output mechanism of the engine by meshing, the elastic plate is connected to the input mechanism of the power equipment by a screw or other connection method, the engine output mechanism drives the flywheel gear ring to rotate, and drives the input mechanism of the power equipment to rotate through the elastic plate, thereby driving the power equipment to operate, and by arranging the radial tie rod to play a radial positioning role, and the buffer spring to play a circumferential torsion buffering role, the elastic plate greatly reduces the influence of the rotational inertia of the rigid load on the torsional vibration of the engine, thereby maintaining the torsional vibration of the engine crankshaft within a safe range, and improving the reliability of the engine;
[0024] 2. By providing a first cover plate, a second cover plate and a connecting rivet, the elastic plate is arranged between the first cover plate and the second cover plate through the connecting rivet connection, thereby providing protection for both sides of the elastic plate, reducing the possibility of damage to the elastic plate caused by direct impact, and improving durability;
[0025] 3. By setting the first gasket and the second gasket, a buffer space is created between the first cover plate and the elastic plate, and by setting the second gasket, a buffer space is created between the second cover plate and the elastic plate, thereby reducing the possibility of the first cover plate or the second cover plate being deformed after impact and directly squeezing and damaging the elastic plate, thereby improving the durability of the elastic plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is an overall schematic diagram of an engine elastic flywheel provided in an embodiment of the present application.
[0027] Figure 2 It is a cross-sectional view used to show the elastic plate structure.
[0028] Figure 3 It is a cross-sectional view used to reflect the connection relationship between the first cover plate, the second cover plate and the elastic plate.
[0029] Explanation of the reference numerals: 1. flywheel ring gear; 11. first inner hole; 12. first cover plate; 121. first gasket; 2. flywheel disc; 21. second inner hole; 22. second cover plate; 221. second gasket; 222. connecting hole; 23. clearance groove; 231. positioning hole; 3. elastic plate; 31. radial pull rod; 32. buffer spring; 33. first hole; 34. second hole; 35. third hole; 36. connecting rivet; 37. signal tooth; 4. connecting bolt. DETAILED DESCRIPTION
[0030] The following is combined with Figure 1-3 This application is described in further detail.
[0031] The present application embodiment discloses an engine elastic flywheel. Figures 1 to 3, which comprises a flywheel gear ring 1, a flywheel disc 2, a plurality of connecting bolts 4 and a plurality of elastic plates 3. The flywheel gear ring 1, the flywheel disc 2 and the elastic plate 3 are all circular. The flywheel gear ring 1 is provided with a first inner hole 11, the flywheel disc 2 is provided with a second inner hole 21, and the elastic plate 3 is made of a spring steel plate. The connecting bolt 4 is used to connect the flywheel gear ring 1, the elastic plate 3 and the flywheel disc 2 together. A plurality of signal teeth 37 are integrally fixedly provided on the edge of the elastic plate 3, and connecting rivets 36 are provided between the elastic plates 3. The connecting rivets 36 penetrate all the elastic plates 3 and connect all the elastic plates 3 together. The elastic plates 3 are provided between the flywheel and the connecting bolts 4. A first hole 33 is provided through the center of the elastic plate 3, and a plurality of second holes 34 are provided through the elastic plate 3. The second holes 34 are provided around the first hole 33. The first hole 33 and the second hole 34 can be penetrated by bolts or screws on the input mechanism of the power equipment, so as to connect the elastic plate 3 and the input mechanism of the power equipment. The flywheel gear ring 1 is connected to the output mechanism of the engine by meshing. The elastic plate 3 is provided with radial tie bars 31 and buffer springs 32 fixed in an integrated manner along the radial direction. The radial tie bars 31 and buffer springs 32 are alternately arranged, and the buffer springs 32 are plane spiral springs. The engine output mechanism drives the flywheel gear ring 1 to rotate and drives the power equipment input mechanism to rotate through the elastic plate 3 to drive the power equipment to operate. In this process, the radial tie bars 31 play a radial positioning role, and the buffer springs 32 play a circumferential torsional buffering role, which greatly reduces the influence of the moment of inertia on the torsional vibration of the engine. The buffering effect of the elastic plate 3 keeps the torsional vibration of the engine crankshaft within a safe range, thereby reducing the probability of engine damage and improving the reliability of the engine.
[0032] To improve the stability of the connection with the power equipment input mechanism, refer to Figure 1 and Figure 3, a first cover plate 12 is adapted and inserted in the first inner hole 11, a second cover plate 22 is adapted and inserted in the second inner hole 21, and the elastic plate 3 is arranged between the first cover plate 12 and the second cover plate 22. The first cover plate 12 is provided with a first gasket 121, which is arranged between the first cover plate 12 and the elastic plate 3, and the second cover plate 22 is provided with a second gasket 221, which is arranged between the second cover plate 22 and the elastic plate 3. The first cover plate 12, the second cover plate 22, the first gasket 121 and the second gasket 221 are all fixedly connected to the elastic plate 3 by connecting rivets 36. The first cover plate 12, the second cover plate 22, the first gasket 121 and the second gasket 221 are all penetrated by a plurality of third holes 35 for inserting the plug rods of the power equipment input mechanism, and the third holes 35 penetrate the elastic plate 3 and are arranged around the second holes 34. The second hole 34 and the first hole 33 on the elastic plate 3 penetrate the first gasket 121, and the first cover plate 12, the second gasket 221 and the second cover plate 22 are all penetrated with a connecting hole 222 connected with the first hole 33 and the second hole 34. The side wall of the flywheel 2 away from the elastic plate 3 is provided with an annular clearance groove 23, and the bottom wall of the clearance groove 23 is provided with a plurality of positioning holes 231. An annular fixed block is rotatably provided on the housing of the power device, and the fixed block is inserted into the clearance groove 23 and is limited by inserting the plug rod on the fixed block into the positioning hole 231. At the same time, the input mechanism rotatably provided on the power device passes through the first hole 33, the second hole 34 and the third hole 35 through the plug rod, thereby connecting with the elastic plate 3, the first cover plate 12 and the second cover plate 22, etc., so as to improve the stability of the connection between the power device and the elastic plate 3.
[0033] The implementation principle of an engine elastic flywheel in the embodiment of the present application is as follows: the flywheel gear ring 1 is set on the engine when rotating, and meshes with the gear of the engine output mechanism through the gear block, and at the same time, the power equipment housing is connected to the flywheel disc 2 through the fixed block that is rotated and inserted into the clearance groove 23 and the plug rod on the fixed block is inserted into the positioning hole 231 to limit the horizontal position, and at the same time, the plug rod on the power equipment input mechanism is inserted into the first hole 33, the second hole 34 and the third hole 35 to connect with the elastic plate 3. When the engine is started, the flywheel gear ring 1 is driven to rotate through the output device, thereby driving the elastic plate 3 to rotate, and the elastic plate 3 drives the power equipment input mechanism to rotate, thereby driving the power equipment to operate. In this process, the radial pull bar 31 on the elastic plate 3 plays a radial positioning role, and the buffer spring 32 plays a circumferential torsion buffering role, thereby playing a buffering effect, greatly reducing the influence of the rotational inertia on the torsional vibration of the engine, so that the torsional vibration of the engine crankshaft is maintained within a safe range, thereby reducing the probability of engine damage and improving the reliability of the engine.
[0034] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. An engine elastic flywheel, characterized in that: The invention comprises a flywheel gear ring (1), an elastic plate (3) and a flywheel disc (2), wherein the flywheel gear ring (1), the elastic plate (3) and the flywheel disc (2) are connected together, the elastic plate (3) is arranged between the flywheel gear ring (1) and the flywheel disc (2), the flywheel gear ring (1) is connected to an engine output mechanism, the elastic plate (3) is connected to a power equipment input mechanism, and the elastic plate (3) is provided with a radial tension bar (31) and a buffer spring (32).
2. An engine elastic flywheel according to claim 1, characterized in that: The elastic plate (3) is provided with a plurality of plates, and connecting rivets (36) are provided between the elastic plates (3), and the connecting rivets (36) are used to connect all the elastic plates (3) together.
3. An engine elastic flywheel according to claim 2, characterized in that: The flywheel ring gear (1) is provided with a first cover plate (12), and the flywheel disc (2) is provided with a second cover plate (22); the first cover plate (12) and the second cover plate (22) are both connected to an elastic plate (3) via connecting rivets (36); the elastic plate (3) is arranged between the first cover plate (12) and the second cover plate (22); and the second cover plate (22) and the elastic plate (3) are jointly connected to an input mechanism of a power device.
4. An engine elastic flywheel according to claim 3, characterized in that: The first cover plate (12) is provided with a first gasket (121), the first gasket (121) is arranged between the first cover plate (12) and the elastic plate (3), and the first gasket (121) is connected to the first cover plate (12) and the elastic plate (3) via a connecting rivet (36).
5. The engine elastic flywheel according to claim 3, characterized in that: The second cover plate (22) is provided with a second gasket (221), the second gasket (221) is arranged between the second cover plate (22) and the elastic plate (3), and the second gasket (221) is connected to the second cover plate (22) and the elastic plate (3) via a connecting rivet (36).
6. The engine elastic flywheel according to claim 3, characterized in that: The flywheel gear ring (1) is provided with a first inner hole (11), the first cover plate (12) is inserted into the first inner hole (11), the flywheel disc (2) is provided with a second inner hole (21), and the second cover plate (22) is inserted into the second inner hole (21).
7. The engine elastic flywheel according to claim 1, characterized in that: The flywheel disc (2) is provided with a clearance groove (23), and a positioning hole (231) is provided on the bottom wall of the clearance groove (23).
8. The engine elastic flywheel according to claim 1, characterized in that: The elastic plate (3) is provided with a plurality of signal teeth (37).