Shock absorption and noise reduction type coupler

Abstract

The utility model relates to the technical field of couplings, in particular to a shock absorption and noise reduction type coupler which comprises a main shaft sleeve and an auxiliary shaft sleeve, and an elastic body is clamped between the main shaft sleeve and the auxiliary shaft sleeve. Sleeves are arranged in the main shaft sleeve and the auxiliary shaft sleeve, shaft holes are formed in the sleeves in a penetrating mode, and sound absorption layers are arranged between the shaft holes and the sleeves and embedded in the sleeves. And an elastic layer is arranged between the sound absorption layer and the sleeve. According to the utility model, the technical problems of effective shock absorption and noise reduction of the coupler are solved.

Description

Technical Field

[0001] This utility model relates to the field of coupling technology, and more specifically, to a vibration-damping and noise-reducing coupling. Background Technology

[0002] A coupling is a device that connects two shafts or a shaft and a rotating component, allowing them to rotate together during the transmission of motion and power, and remaining connected under normal circumstances. It is used to securely connect the driving and driven shafts in different mechanisms, enabling them to rotate together and transmit motion and torque. Simultaneously, it also provides cushioning and vibration damping, improving the performance of the transmission system.

[0003] Existing couplings, during operation, generate a certain degree of vibration and noise due to vibrations from external equipment and misalignment of the connecting shafts. While transmitting torque, the drive shaft also transmits torque. To reduce vibration and noise, flexible couplings are generally used; however, their noise reduction effect is not significant.

[0004] A Chinese utility model patent, titled "Vibration-Damping and Noise-Reducing Diaphragm Coupling" and with publication number CN216975581U, comprises a left half-section, a right half-section, a left connecting plate, a right connecting plate, a diaphragm assembly, a connecting screw and nut, a compensating pad, and a petal-shaped vibration damping pad. The compensating pad is made of elastic material, and petal-shaped protrusions are formed above the inner center of the left and right connecting plates. The petal-shaped vibration damping pads are also made of elastic material and are configured to cooperate with the petal protrusions. The left and right connecting plates respectively mate with the inner end face stops of the flanges of the left and right half-sections and are fixedly connected by bolts. This utility model has good vibration damping and noise reduction effects, smooth rotation, and long service life.

[0005] Although this invention can reduce vibration and noise, the coupling and the drive shaft of the external equipment are rigidly fixed. During the coupling process, the vibration of the drive shaft will be transmitted to the outside of the coupling, resulting in poor vibration reduction and noise. Utility Model Content

[0006] The purpose of this application is to provide a vibration-damping and noise-reducing coupling, which solves the technical problems of effective vibration reduction and noise reduction in couplings.

[0007] To solve the above-mentioned technical problems, the solution adopted in this application is as follows:

[0008] A vibration-damping and noise-reducing coupling includes a main bushing and a secondary bushing, with an elastic body engaged between the main bushing and the secondary bushing.

[0009] Preferably, both the main bushing and the auxiliary bushing include a sleeve, a shaft hole is provided inside the sleeve, and a sound-absorbing layer is provided between the shaft hole and the sleeve, with the sound-absorbing layer embedded inside the sleeve.

[0010] Preferably, an elastic layer is provided between the sound-absorbing layer and the sleeve.

[0011] Preferably, the elastomer includes an elastic block, the two end faces of which abut against the main bushing and the secondary bushing, respectively.

[0012] Preferably, the elastic block has a spline structure, the keyway of the spline structure is a snap-fit ​​groove, a snap-fit ​​block is slidably matched in the snap-fit ​​groove, the snap-fit ​​block is set at one end of the sleeve, and at least two snap-fit ​​blocks are evenly arranged around the circumference of the sleeve.

[0013] Preferably, the snap-fit ​​blocks on one end of the sleeves of the two bushings are arranged facing each other, the snap-fit ​​blocks on the two sleeves are staggered, and the number of snap-fit ​​blocks on the two sleeves corresponds one-to-one with the number of snap-fit ​​slots.

[0014] Preferably, one end of the snap-fit ​​groove is provided with an elastic pad, one side of the elastic pad is flush with one end of the elastic block, and the other side of the elastic pad abuts against the end of the snap-fit ​​block.

[0015] Preferably, the main bushing and the auxiliary bushing further include a threaded locking hole, which passes through one end of the bushing, and a bolt is threaded into the threaded locking hole.

[0016] Preferably, the sleeve has a slot running through it along its axial direction, the slot passes through the shaft of the shaft hole, the slot opening is located at one end of the sleeve, and the threaded locking hole passes perpendicularly through the opening end of the slot.

[0017] Preferably, at least two sound-absorbing cottons are embedded in the sleeve, and multiple sound-absorbing cottons are evenly arranged along the circumference of the shaft hole. There is a sandwich block between adjacent sound-absorbing cottons, and several through holes are penetrating the sandwich block, with the through holes penetrating in the direction of the sound-absorbing cotton.

[0018] Preferably, the inner side of the elastic layer is sound-absorbing cotton and a sandwich block, the outer side of the elastic layer is a sleeve, and the inner side of the elastic layer abuts against the sound-absorbing cotton and the sandwich block.

[0019] Preferably, the elastic layer has an arc-shaped ring structure.

[0020] The technical solution of this application has at least the following advantages and beneficial effects:

[0021] In this invention, a sound-absorbing layer is set at the position where the drive shaft and coupling transmit torque. The noise transmitted from the torque position is evenly absorbed through the sound-absorbing cotton and the through holes, thereby reducing the noise.

[0022] In this invention, by setting an elastic layer outside the sound-absorbing layer, the vibration transmitted from the position where the coupling is rigidly fixed to the external drive shaft is absorbed by the elastic force of the outer elastic layer, reducing the vibration transmitted by the torque and thus effectively reducing vibration.

[0023] In this invention, by providing an elastic pad on the elastic block between the two bushings, when the coupling offsets the angular offset of the external drive shaft, the elastic block that is undergoing elastic bending is protected from breakage due to excessive bending, thereby improving the safety and quality of the coupling. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model.

[0025] Figure 2 This is a front view structural diagram of the present invention.

[0026] Figure 3 This is a schematic diagram of the left-side structure of this utility model.

[0027] Figure 4 This is a cross-sectional view of the sound-absorbing layer in this utility model.

[0028] Figure 5 This is a cross-sectional view of the sandwich block in this utility model.

[0029] Figure 6 This is a cross-sectional structural diagram of the present invention.

[0030] Figure 7 This is a schematic diagram of the structure of the bushing after it is separated from the elastomer in this utility model.

[0031] Figure 8 This is a cross-sectional view of the elastomer in this utility model.

[0032] In the diagram: 1-Main shaft sleeve, 101-Sleeve, 102-Threaded locking hole, 103-Slotted, 104-Snap-fit ​​block, 2-Elastomer, 201-Elastic block, 202-Snap-fit ​​groove, 203-Elastic pad, 3-Secondary shaft sleeve, 4-Sound-absorbing layer, 401-Sound-absorbing cotton, 402-Interlayer block, 403-Through hole, 5-Elastic layer. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. The terms "center," "upper," "lower," "inner," and "outer," indicating orientation or positional relationships based on the orientation or positional relationships shown in the figures, or the orientation or positional relationships commonly used when the product is in use, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation on this application. It should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] Example

[0036] Please refer to Figures 1-8 This utility model provides a vibration-damping and noise-reducing coupling, including a main shaft sleeve 1, an elastomer 2, a secondary shaft sleeve 3, a sound-absorbing layer 4, and an elastic layer 5.

[0037] Furthermore, the main shaft sleeve 1 and the auxiliary shaft sleeve 3 are used to connect the drive shaft of the external device. An elastic body 2 is snapped between the main shaft sleeve 1 and the auxiliary shaft sleeve 3, so that the two shaft sleeves are connected together to realize the coupling function.

[0038] The elastomer 2 is an elastic rubber structure that can elastically stretch and contract. During the operation of the coupling, it can elastically absorb the mechanical vibration transmitted from the external equipment at the two bushings, thereby reducing the vibration at the coupling.

[0039] Furthermore, both the main bushing 1 and the auxiliary bushing 3 include a sleeve 101, within which a shaft hole is formed. The drive shaft of an external device passes through this shaft hole. A sound-absorbing layer 4 is positioned between the shaft hole and the sleeve 101, embedded within the sleeve 101 to ensure the integrity of the shaft hole. When a drive shaft is fixed within the shaft hole, noise is generated during its rotation. The sound-absorbing layer 4 absorbs this noise from the fixed point of the drive shaft, reducing the noise level.

[0040] The sound-absorbing layer 4 includes sound-absorbing cotton 401, interlayer block 402, and through hole 403.

[0041] Specifically, at least two sound-absorbing cottons 401 are embedded in the shaft hole inside the sleeve 101, and the multiple sound-absorbing cottons 401 are evenly arranged along the circumference of the shaft hole. Between adjacent sound-absorbing cottons 401 is a sandwich block 402, and the two ends of the sandwich block 402 are fixed in the sleeve 101. When the drive shaft is fixed in the shaft hole, the surface of the sandwich block 402 near the shaft hole contacts and is fixed with the drive shaft, generating frictional resistance, so that when the drive shaft of the external device rotates, it drives the bushing to rotate synchronously.

[0042] The interlayer block 402 also has several through holes 403, and the through holes 403 are directed toward the sound-absorbing cotton 401.

[0043] Preferably, when the coupling is working, the noise generated by the rotation of the drive shaft from the external equipment will be transmitted to the coupling through the drive shaft end, and with the vibration of the external equipment, it will generate even greater noise. Therefore, the vibration is absorbed by the elastomer 2 to reduce the noise. Then, when some of the noise is transmitted to the sleeve 101, it will be partially absorbed by the sound-absorbing cotton 401 between the sleeve 101 and the shaft hole. Then, the through hole 403 on the interlayer block 402 will evenly transmit and disperse the noise at the shaft hole to multiple sound-absorbing cottons 401, so that the noise is evenly absorbed by the sound-absorbing cottons 401, thereby increasing the noise reduction effect.

[0044] Furthermore, an elastic layer 5 is provided between the sound-absorbing layer 4 and the sleeve 101 to reduce vibration at the coupling and achieve shock absorption.

[0045] Specifically, the elastic layer 5 has an arc-shaped ring structure that encloses the entire sound-absorbing layer 4 inside the sleeve 101. The inner side of the elastic layer 5 consists of sound-absorbing cotton 401 and interlayer block 402, the outer side of the elastic layer 5 is the sleeve 101, and the inner side of the elastic layer 5 abuts against the sound-absorbing cotton 401 and interlayer block 402. The elastic layer 5 is made of elastic rubber.

[0046] Preferably, the elastic layer 5 allows for soft contact between the interlayer block 402 and the sleeve 101, so that when the interlayer block 402, which clamps and fixes the external device drive shaft, transmits vibrations from the external device drive shaft, the vibrations will be absorbed by the elastic layer 5 and will not be transmitted, thereby reducing the vibration of the entire coupling.

[0047] Please refer to Figure 7 and Figure 8 In this embodiment, the elastomer 2 includes an elastic block 201, a snap-fit ​​groove 202, and an elastic pad 203.

[0048] Specifically, the two ends of the elastic block 201 are fixedly abutted against the main sleeve 1 and the secondary sleeve 3 respectively. The elastic block 201 has a spline structure, and the keyway of the spline structure is a snap-fit ​​groove 202. A snap-fit ​​block 104 is slidably matched in the snap-fit ​​groove 202. The snap-fit ​​block 104 is set at one end of the sleeve 101, and at least two snap-fit ​​blocks 104 are evenly arranged on the sleeve 101.

[0049] The snap-fit ​​blocks 104 on one end of the sleeves 101 of the two bushings are arranged facing each other, and the snap-fit ​​blocks 104 on the two sleeves 101 are staggered. The number of snap-fit ​​blocks 104 on the two sleeves 101 corresponds one-to-one with the number of snap-fit ​​grooves 202.

[0050] By engaging and matching the spline structure with the snap-fit ​​blocks 104 inside the two bushings, the coupling can rotate synchronously while also achieving elastic damping.

[0051] One end of the snap-fit ​​groove 202 is provided with an elastic pad 203. One side of the elastic pad 203 is flush with one end of the elastic block 201, and the other side of the elastic pad 203 abuts against the end of the snap-fit ​​block 104.

[0052] When the drive shaft of the external device deviates at a relative angle, the elastic block 201 will bend elastically to offset the offset. At this time, the elastic pad 203 on the elastic block 201 will also exert a spring force on the offset snap block 104 to help offset the offset and prevent the elastic block from being subjected to excessive angular offset and breaking.

[0053] Please refer to Figures 1-5 In this embodiment, the main bushing 1 and the secondary bushing 3 also include a threaded locking hole 102 and a slot 103.

[0054] Specifically, the threaded locking hole 102 passes through one end of the sleeve 101, and a bolt is fitted into the threaded locking hole 102. The sleeve 101 has a slot 103 extending through it along its axial direction. The slot 103 passes through the center of the shaft hole, and the opening of the slot 103 is located at one end of the sleeve 101. The threaded locking hole 102 passes perpendicularly through the opening end of the slot 103.

[0055] When the drive shaft of the external device is inserted into the sleeve 101, the drive shaft and the shaft hole slide together, resulting in low friction. Tightening the bolts closes the opening of the slot 103 in the sleeve 101, reducing the diameter of the shaft hole in the sleeve 101. This causes the wall of the shaft hole (i.e., the surface of the interlayer block 402) to abut against the surface of the drive shaft, increasing frictional resistance and thus fixing the drive shaft of the external device for coupling function.

[0056] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art will fully understand how to implement the technical solution of this utility model based on the above description. The scope of this utility model is defined by the appended claims.

Claims

1. A vibration-damping and noise-reducing coupling, comprising a main bushing (1) and a secondary bushing (3), wherein an elastic body (2) is engaged between the main bushing (1) and the secondary bushing (3), characterized in that... ； Both the main bushing (1) and the auxiliary bushing (3) include a sleeve (101), and a shaft hole is provided inside the sleeve (101). A sound-absorbing layer (4) is provided between the shaft hole and the sleeve (101), and the sound-absorbing layer (4) is embedded inside the sleeve (101). An elastic layer (5) is provided between the sound-absorbing layer (4) and the sleeve (101).

2. The vibration-damping and noise-reducing coupling according to claim 1, characterized in that, The elastic body (2) includes an elastic block (201), and the two end faces of the elastic block (201) abut against the main bushing (1) and the secondary bushing (3) respectively. The elastic block (201) has a spline structure, and the keyway of the spline structure is a snap-fit ​​groove (202). A snap-fit ​​block (104) is slidably matched in the snap-fit ​​groove (202). The snap-fit ​​block (104) is set at one end of the sleeve (101). At least two snap-fit ​​blocks (104) are evenly arranged on the sleeve (101). The snap-fit ​​blocks (104) on one end of the sleeves (101) of the two bushings are arranged facing each other, and the snap-fit ​​blocks (104) on the two sleeves (101) are staggered. The number of snap-fit ​​blocks (104) on the two sleeves (101) corresponds one-to-one with the number of snap-fit ​​grooves (202).

3. A vibration-damping and noise-reducing coupling according to claim 2, characterized in that, One end of the snap-fit ​​groove (202) is provided with an elastic pad (203), one side of the elastic pad (203) is flush with one end face of the elastic block (201), and the other side of the elastic pad (203) abuts against the end of the snap-fit ​​block (104).

4. A vibration-damping and noise-reducing coupling according to claim 1, characterized in that, The main bushing (1) and the secondary bushing (3) also include a threaded locking hole (102), which passes through one end of the sleeve (101), and a bolt is threaded inside the threaded locking hole (102); The sleeve (101) has a slot (103) running through it along its axial direction. The slot (103) passes through the shaft of the shaft hole. The opening of the slot (103) is located at one end of the sleeve (101). The threaded locking hole (102) passes vertically through the opening end of the slot (103).

5. A vibration-damping and noise-reducing coupling according to claim 1, characterized in that, At least two sound-absorbing cottons (401) are embedded in the sleeve (101). Multiple sound-absorbing cottons (401) are evenly arranged along the circumference of the shaft hole. There is a sandwich block (402) between adjacent sound-absorbing cottons (401). Several through holes (403) are penetrating in the sandwich block (402). The through holes (403) are oriented towards the sound-absorbing cottons (401).

6. A vibration-damping and noise-reducing coupling according to claim 1, characterized in that, The inner side of the elastic layer (5) is a sound-absorbing cotton (401) and a sandwich block (402), the outer side of the elastic layer (5) is a sleeve (101), and the inner side of the elastic layer (5) abuts against the sound-absorbing cotton (401) and the sandwich block (402). The elastic layer (5) has an arc-shaped ring structure.

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