A torsional vibration damper disc for a rotor system

Abstract

The utility model discloses a kind of torsional vibration damping disc for rotor system, it is related to rotor torsional vibration damping technical field, including disc, swing assembly, bearing, hinge hole bolt, protective shell, screw, nut, wherein swing assembly includes swing block and elastic limit block.Hinge hole bolt is sequentially passed through disc, protective shell, bearing, is connected with disc by nut, protective shell is connected with disc by screw, and elastic limit block is vulcanized with swing block and connects.Damping disc can swing around bearing by swing assembly left and right, so that centrifugal force is offset to generate, to generate the moment of force opposite torsional vibration direction, this will make torsional vibration be inhibited.Elastic limit block of rubber material can limit swing angle of swing assembly and absorb impact.The utility model structure is simple, easy to disassemble and assemble, maintenance cost is low, can be inhibited to the torsional vibration generated when rotor system works, prolong the service life of rotor system.

Description

Technical Field

[0001] This utility model relates to the field of rotor torsional vibration reduction technology, and in particular to a torsional vibration damping disc for rotor systems. Background Technology

[0002] During operation, rotor systems may experience torsional vibration due to factors such as the periodic output torque of the power source, the periodic counter-torque at the load end, and rotor misalignment. Significant torsional vibration in the rotor system can lead to fatigue accumulation, increased noise, and reduced comfort. Centrifugal pendulum vibration dampers are commonly used for torsional vibration reduction in rotor systems. When torsional vibration occurs in the rotor system, the pendulum component inside the centrifugal pendulum damper is subjected to centrifugal force and begins to oscillate. This generates a centrifugal torque, which is opposite to the direction of torsional vibration, effectively suppressing torsional vibration and extending the service life of the rotor system.

[0003] Traditional centrifugal pendulum vibration dampers have some problems when in use: due to wear of the pendulum component and assembly errors during operation, the gap between the pendulum component and the transmission flange will become larger and larger. As a result, the centrifugal pendulum torsional vibration damper will produce more abnormal noise and vibration and the vibration damping effect will be worse. However, the pendulum component often cannot be replaced separately, and replacing the whole assembly will increase the cost of use. Utility Model Content

[0004] This invention relates to a torsional vibration damping disc for rotor systems, with the aim of better solving the problems mentioned in the background art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: including a disc, a swing assembly, a bearing, a reamed hole bolt, a protective shell, a screw, and a nut. The reamed hole bolt passes through the disc, the protective shell, and the bearing in sequence, and is connected to the disc by the nut. The swing assembly contains a bearing positioning hole that is interference-fitted with the outer ring of the bearing. The protective shell is connected to the disc by a screw.

[0006] In this embodiment, the disc has a groove, and four through holes and eight threaded through holes are evenly distributed on both sides of the groove. The through holes are used to connect with reamed bolts, and the threaded through holes are connected to the protective shell by screws. The disc can be connected to the rotor system by means of expansion joint, welding, or other methods.

[0007] In this embodiment, the swing assembly is placed within the groove of the disc and includes a swing block and an elastic limiting block. When the rotor system experiences torsional vibration, the swing assembly swings accordingly. This swinging causes the centrifugal force on the swing assembly to deflect, generating a torque opposite to the direction of torsional vibration, thereby suppressing torsional vibration.

[0008] In this embodiment, the swing block has a bearing positioning hole on its surface, and the positioning hole is interference-fitted with the outer ring of the bearing.

[0009] In this embodiment, the elastic limiting block is made of rubber and is vulcanized and connected to the swing block.

[0010] In this embodiment, the protective shell is hollow inside with an opening. The opening is an arc that fits with the inner ring of the disk. Two grooves are formed on the front and rear surfaces of the arc, into which a reamer bolt can be inserted. There are two threaded holes on each of the front and rear surfaces, which are connected to the disk by screws. When the reamer bolt or the swing assembly breaks, the protective shell can play a protective role, preventing the broken parts from being thrown out and causing injury.

[0011] In summary, this utility model has the following beneficial effects:

[0012] This utility model has a simple structure and is easy to assemble and disassemble. When the swing component or other parts are damaged, the corresponding parts can be directly selected for replacement without replacing the entire assembly, which significantly reduces maintenance costs.

[0013] When torsional vibration occurs, the swing assembly rotates along the bearing. When the rotation angle reaches the limit angle, the elastic limiting block inside it will contact the inner ring of the disk, thereby limiting the swing angle of the swing assembly. Since the elastic limiting block is made of rubber and has elasticity, it will absorb the impact when it contacts the inner ring of the disk, reducing damage to the disk.

[0014] This invention suppresses torsional vibrations generated during the operation of a rotor system. When torsional vibrations occur in the rotor system, the oscillating component will oscillate around the bearing accordingly. The oscillation will cause the centrifugal force on the oscillating block to deflect, which will generate a torque opposite to the direction of torsional vibration, thereby suppressing torsional vibrations. Attached Figure Description

[0015] Figure 1 This is a three-dimensional assembly drawing of this utility model.

[0016] Figure 2 This is a three-dimensional exploded view of this utility model.

[0017] Figure 3 This is a three-dimensional sectional view of the disk of this utility model.

[0018] Figure 4 This is a three-dimensional assembly drawing of the swing component of this utility model.

[0019] Figure 5 This is a diagram showing the extreme positions of the swing assembly of this utility model.

[0020] Figure 6 This is a three-dimensional half-sectional view of the protective shell of this utility model.

[0021] Figure label:

[0022] 1. Disc; 2. Swing assembly; 21. Swing block; 22. Elastic limit block; 3. Bearing; 4. Hinge hole bolt; 5. Protective shell; 6. Screw; 7. Nut. Detailed Implementation

[0023] To more clearly illustrate the technical solution of this utility model, the concept and specific structure of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] like Figure 1 and Figure 2 As shown, the present invention discloses a torsional vibration damping disc for a rotor system, comprising a disc 1, a swing assembly 2, a bearing 3, a reamed bolt 4, a protective shell 5, a screw 6, and a nut 7. The reamed bolt 4 passes through the disc 1, the protective shell 5, and the bearing 3 in sequence, and is connected to the disc 1 by the nut 7. The swing assembly 2 contains a bearing positioning hole that is interference-fitted with the outer ring of the bearing 3. The protective shell 5 is connected to the disc 1 by the screw 6.

[0025] like Figure 2 and Figure 3 As shown, the disc 1 has a groove, and four through holes and eight threaded through holes are evenly distributed on the two side walls of the groove. The through holes are used to connect with the reamed bolts 4, and the threaded through holes are connected to the protective shell 5 by screws 6.

[0026] like Figure 2 and Figure 4 As shown, the swing assembly 2 is placed in the groove of the disc 1. The swing assembly 2 includes: a swing block 21 with a bearing positioning hole on its surface, the positioning hole being interference-fitted with the outer ring of the bearing 3; and an elastic limiting block 22 made of rubber, which is vulcanized and connected to the swing block 21.

[0027] like Figure 5 As shown, when the rotor system experiences torsional vibration, the oscillating component 2 oscillates around the bearing 3. The oscillation causes the centrifugal force on the oscillating component 2 to deflect, which generates a torque opposite to the direction of torsional vibration, thereby suppressing torsional vibration. When the oscillating component 2 oscillates to its limit position, its internal elastic limiting block 22 will contact the inner ring of the disk 1, thereby limiting the oscillation angle of the oscillating component. Since the elastic limiting block 22 is made of rubber and has elasticity, it will absorb the impact and reduce the damage to the disk 1 when it contacts the inner ring of the disk 1.

[0028] like Figure 6 As shown, the protective shell 5 is hollow inside and has an opening. The opening is an arc that fits with the inner ring of the disc 1. There are two grooves on the front and rear surfaces of the arc, into which the reamed bolt 4 can be inserted. There are two threaded holes on each of the front and rear surfaces, which are connected to the disc 1 by screws 6.

[0029] like Figure 2 As shown, when a component is damaged, it can be replaced simply by removing screw 6 and hinged hole bolt 4, which significantly reduces the maintenance cost of the damper disc.

Claims

1. A torsional vibration damping disc for a rotor system, characterized in that: The assembly includes a disc (1), a swing assembly (2), a bearing (3), a reamed bolt (4), a protective shell (5), a screw (6), and a nut (7). The reamed bolt (4) passes through the disc (1), the protective shell (5), and the bearing (3) in sequence, and is connected to the disc (1) by the nut (7). The swing assembly (2) contains a bearing positioning hole that is interference-fitted with the outer ring of the bearing (3). The protective shell (5) is connected to the disc (1) by the screw (6).

2. A torsional vibration damping disc for a rotor system according to claim 1, characterized in that, The disc (1) is provided with a groove, and four through holes and eight threaded through holes are evenly distributed on the two side walls of the groove. The through holes are used to connect with the reamed hole bolts (4), and the threaded through holes are connected to the protective shell (5) by screws (6).

3. A torsional vibration damping disc for a rotor system according to claim 1, characterized in that, The swing assembly (2) is placed in the groove of the disk (1), and the swing assembly (2) includes: The swing block (21) has a bearing positioning hole on its surface, and the positioning hole is interference-fitted with the outer ring of the bearing (3); The elastic limiting block (22) is made of rubber and is vulcanized to the swing block (21).

4. A torsional vibration damping disc for a rotor system according to claim 1, characterized in that, The protective shell (5) is hollow inside and has an opening. The opening is an arc that fits with the inner ring of the disc (1). There are two grooves on the front and back surfaces of the arc, into which a hinge bolt (4) can be inserted. There are two threaded holes on each of the front and back surfaces, which are connected to the disc (1) by screws (6).

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