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CN-121993550-A - Flywheel with variable rotational inertia

CN121993550ACN 121993550 ACN121993550 ACN 121993550ACN-121993550-A

Abstract

The invention relates to the technical field of flywheels, and particularly discloses a variable-rotation inertia flywheel which comprises a flywheel body, an inertia disc, a clamping pin piece and an elastic driving assembly, wherein the flywheel body is formed by matching a bottom disc body with a top disc body, a sealing installation groove is formed by surrounding the bottom disc body and the top disc body, the inertia disc rotates relative to the flywheel body through a bearing, the clamping pin piece and the elastic driving assembly are arranged in the installation groove, the meshing part of the clamping pin piece is matched with the matching part of the inertia disc, and the flywheel realizes reliable clutch of the inertia disc and the flywheel body, can adjust high-low-speed rotation inertia and is stable in operation.

Inventors

  • WANG TIANXING
  • YANG XIAOLI
  • DAI SHAOXUAN
  • QI ZILONG
  • TANG HANG
  • HUANG JIAN

Assignees

  • 湖南华研实验室有限公司

Dates

Publication Date
20260508
Application Date
20260409

Claims (10)

  1. 1. The flywheel with variable rotational inertia is characterized by comprising a flywheel body (1), an inertia disc (2), a clamping pin piece (3) and an elastic driving assembly (4); The flywheel body (1) comprises a bottom disc body (102) and a top disc body (101), an annular groove (106) is formed in the bottom of the top disc body (101), the annular groove (106) is fixedly connected with the outside of the bottom disc body (102) and the top of the annular plate (103) in a matched mode, a plurality of guide blocks (109) are arranged on the bottom disc body (102), mounting grooves (105) are formed in each guide block (109), an annular plate (103) is arranged on the top surface of the bottom disc body (102), guide plates (104) matched with each guide block (109) are arranged on the annular plate (103), and the top surfaces of the mounting grooves (105) are sealed by the guide plates (104) of the annular plate (103); the inertia disc (2) is coaxially arranged on the inner side of the flywheel body (1), the inertia disc (2) is respectively in sliding fit with the inner wall of the top disc body (101) and the guide plate (104) on the annular plate (103), a bearing is arranged at the center of the bottom disc body (102), and the inertia disc (2) is fixedly sleeved on the outer wall of the bearing and can be arranged in a rotary manner relative to the flywheel body (1); the elastic driving assembly (4) is arranged in the mounting groove (105) and used for driving the latch piece (3) to move towards the inertia disc (2), a meshing part is arranged at one end, close to the inertia disc (2), of the latch piece (3), a matching part matched with the meshing part is arranged on the outer circumferential surface of the inertia disc (2), when the meshing part is meshed with the matching part, the inertia disc (2) and the flywheel body (1) form a rotation integrated structure, and when the meshing part is separated from the matching part, the inertia disc (2) and the flywheel body (1) are released from rotation constraint and can rotate relatively.
  2. 2. The flywheel of claim 1 wherein the detent member (3) is in clearance fit with the mounting groove (105) and the detent member (3) is radially oriented by the inner wall constraint of the mounting groove (105).
  3. 3. The flywheel of variable moment of inertia according to claim 1, characterized in that the outer circumferential surfaces of the detent member (3) are each provided with an exhaust groove (35) extending through the detent member in the axial direction thereof.
  4. 4. The flywheel of claim 1 wherein the engagement portion includes a rectangular projection (31) and the mating portion includes a rectangular slot (32) adapted to mate with the rectangular projection (31), the rectangular projection (31) being in mating engagement with the rectangular slot (32).
  5. 5. The flywheel with variable moment of inertia according to claim 1, wherein a sealing ring (7) is arranged between the bottom disc body (102) and the top disc body (101), and a plurality of exhaust holes (110) are further formed in the top disc body (101), and the exhaust holes (110) are used for installing one-way exhaust valves.
  6. 6. A flywheel with variable moment of inertia according to claim 1, wherein the engagement portion further comprises a wedge-shaped engagement surface (33), the engagement portion further comprises a wedge-shaped engagement groove (34) adapted to the wedge-shaped engagement surface (33), and the wedge-shaped engagement surface (33) is engaged with the wedge-shaped engagement groove (34).
  7. 7. The flywheel of claim 6 wherein the wedge-shaped slot (34) has a guide ramp at its entrance, the opening angle of the guide ramp being greater than the slot wall angle of the wedge-shaped slot (34).
  8. 8. The flywheel with variable moment of inertia according to claim 1, wherein the side of the latch member (3) is provided with a positioning boss (108), the inner wall of the mounting groove (105) is provided with a positioning chute (107) adapted to the positioning boss (108), and the positioning boss (108) is slidably disposed in the positioning chute (107).
  9. 9. The flywheel with variable moment of inertia according to claim 1, wherein the elastic driving assembly (4) comprises a grading spring assembly, the grading spring assembly comprises a main spring (5) and an auxiliary spring (6) which are coaxially sleeved, the main spring (5) is sleeved outside the auxiliary spring (6), two ends of the main spring (5) and the auxiliary spring (6) are respectively abutted against the groove bottom of the mounting groove (105) and the tail of the clamping pin piece (3), and the elastic coefficient of the main spring (5) is smaller than that of the auxiliary spring (6).
  10. 10. The flywheel with variable moment of inertia according to claim 1, wherein the mounting grooves (105) are uniformly distributed along the circumferential direction of the bottom disc body (102), and the number of the locking pin pieces (3) and the elastic driving components (4) corresponds to the number of the mounting grooves (105) one by one.

Description

Flywheel with variable rotational inertia Technical Field The invention relates to the technical field of flywheels, in particular to a flywheel with variable rotational inertia. Background At present, when a single-cylinder and multi-cylinder engine runs at a low rotation speed, shaking and resonance phenomena are easy to occur, and the resonance rotation speed characteristics are that when inertia is increased, the engine can stably run at a lower rotation speed, and when the inertia is reduced, the engine needs to be run at a higher rotation speed. In the prior art, inertia is continuously changed, the inhibition effect on low-rotation-speed 1-order and 2-order torsional vibration is limited, inertia switching setbacks are easily caused by single-spring linear adjustment, and low-speed smoothness and high-speed dynamics cannot be considered. The object of the present invention is to provide a flywheel with variable moment of inertia, which solves the above mentioned problems in the background art. Disclosure of Invention In order to achieve the above object, the present invention provides a flywheel with variable moment of inertia, comprising a flywheel body, an inertia disc, a latch member and an elastic driving assembly; The flywheel body comprises a bottom disc body and a top disc body, an annular groove is formed in the bottom of the top disc body, the annular groove is fixedly connected with the outside of the bottom disc body and the top of the annular plate in a matched mode, a plurality of guide blocks are arranged on the bottom disc body, each guide block is provided with a mounting groove, the top surface of the bottom disc body is provided with the annular plate, a guide plate matched with each guide block is arranged on the annular plate, and the guide plate of the annular plate seals the top surface of the mounting groove; The inertia disc is coaxially arranged on the inner side of the flywheel body, the inertia disc is respectively in sliding fit with the inner wall of the top disc body and the guide plate on the annular plate, the center of the bottom disc body is provided with a bearing, and the inertia disc is fixedly sleeved on the outer wall of the bearing and can be arranged in a relative rotation manner with the flywheel body; The elastic driving assembly is arranged in the mounting groove and used for driving the latch piece to move towards the inertia disc, an engagement portion is arranged at one end, close to the inertia disc, of the latch piece, when the engagement portion is engaged with the engagement portion, the inertia disc and the flywheel body form a rotation integrated structure, when the engagement portion is disengaged from the engagement portion, the inertia disc and the flywheel body are released from rotation constraint and can rotate relatively, reliable clutch switching between the inertia disc and the flywheel body is achieved through the split type flywheel body and sealing mounting groove structure, and high-low speed rotation inertia is guaranteed to be adjustable and stable in operation. As a further improvement of the invention, the bayonet lock piece is in clearance fit with the mounting groove, radial guiding is realized by the constraint of the inner wall of the mounting groove, and the bayonet lock piece is in clearance fit with the mounting groove and is guided by the constraint of the inner wall, so that the linear movement of the bayonet lock is ensured, and the meshing and disengaging accuracy is improved. As a further improvement of the invention, each surface of the outer periphery of the bayonet lock is provided with an exhaust groove which is penetrated along the axial direction of the bayonet lock, and the outer periphery of the bayonet lock is provided with the exhaust groove which is penetrated along the axial direction, so that the air damping during movement is eliminated, and the bayonet lock moves more smoothly and responds more quickly. As a further improvement of the invention, the engagement part comprises a rectangular convex block, the matching part comprises a rectangular clamping groove matched with the rectangular convex block, and the rectangular convex block is matched and clamped with the rectangular clamping groove, so that the inertia disc and the flywheel body are effectively engaged and disengaged, and the basic inertia switching requirement is met. As a further improvement of the invention, a sealing ring is arranged between the bottom disc body and the top disc body, a plurality of exhaust holes are also arranged on the top disc body, the exhaust holes are used for installing one-way exhaust valves, the sealing ring is arranged between the bottom disc body and the top disc body, the sealing effect is enhanced, impurities are prevented from entering and lubricating oil is prevented from leaking, the reliability of the internal structure is improved, and the one-way exhaust valves are arranged in the exhaust holes and used f