Damping coupling compact in structure and high in torque transmission capacity
By designing a compact vibration-damping coupling with high torque transmission capacity, and using rubber blocks with alternating input and output gear rings to transmit torque, the problem of excessive size and vibration in traditional couplings when transmitting high torque is solved. This achieves good vibration reduction performance and insulation capability while maintaining a compact structure, thus meeting the unit's usage requirements.
Patent Information
- Application Number
- CN202511606504.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-05
- Publication Date
- 2025-12-30
AI Technical Summary
Traditional high-elasticity couplings are too large in size when transmitting large torques, affecting installation space, and are prone to vibration under harsh working conditions, which can damage the unit. They are difficult to meet the dual requirements of compact structure and vibration reduction performance at the same time.
A compact vibration damping coupling with high torque transmission capacity was designed. It uses rubber blocks with alternating input and output gear rings to transmit torque. The rubber blocks have high elasticity and damping characteristics. Through the combination design of rubber blocks and rubber-metal rings, torsional vibration and shaft vibration are absorbed, and electrical insulation performance is achieved.
This design achieves good vibration reduction performance while transmitting torque, and compensates for the axial and radial displacement of the unit, while also having insulation capabilities to protect the unit equipment.
Smart Images
Figure CN121229533A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of testing technology for coupling equipment, and in particular to a vibration-damping coupling with a compact structure and large torsional transmission capacity. Background Technology
[0002] While high-elasticity couplings are widely used in diesel generator sets, their large size often results in significant installation space requirements when transmitting high torques, impacting the overall layout and transmission efficiency of the unit. Furthermore, under harsh operating conditions, these couplings are prone to significant vibrations, and the resulting adverse peak loads, if transmitted to the diesel engine, could damage the unit. Therefore, traditional high-elasticity couplings can no longer simultaneously meet the dual requirements of compact structure and vibration reduction performance. Summary of the Invention
[0003] In view of this, this application provides a vibration-damping coupling with a compact structure and high torsional transmission capacity, which can simultaneously meet the dual requirements of compact structure and vibration reduction performance.
[0004] To solve the above-mentioned technical problems, the technical solution adopted in this application is as follows:
[0005] A compact vibration-damping coupling with high torsional transmission capacity, comprising:
[0006] The input gear ring has one end connected to the power input end, and the other end has a ring of external teeth on its outer circumference.
[0007] The output gear ring has a ring of internal teeth on its inner circumference. The output gear ring is fitted around the input gear ring, and the outer teeth of the input gear ring are located between the inner teeth of the output gear ring. An installation cavity is formed between adjacent inner and outer teeth.
[0008] A rubber block is inserted into the mounting cavity and tightened to transmit the torque of the input gear ring to the output gear ring.
[0009] The output wheel is connected to the output gear ring at one end and to the power output end at the other end for power output.
[0010] Furthermore, the inner teeth of the output gear ring and the outer teeth of the input gear ring are arranged alternately in sequence.
[0011] Furthermore, the rubber block is a toothed rubber block, and the axial length of the rubber block gradually decreases from the outside to the inside.
[0012] Furthermore, the rubber block has two protrusions at one end facing the input gear ring, and these two protrusions are arranged along the length of the rubber block.
[0013] Furthermore, a rotating shaft is coaxially arranged inside the input gear ring, and a support ring is coaxially arranged on the output wheel. The rotating shaft is inserted into the support ring and supported by the support ring, and the rotating shaft and the support ring can move axially.
[0014] Furthermore, the rotating shaft is also provided with a shoulder, and a rubber metal ring and a sleeve are sequentially fitted on the rotating shaft from the inside to the outside. One end of the rubber metal ring abuts against the shoulder of the rotating shaft, and a retaining ring 8 is also provided on the side of the sleeve facing the output wheel. The retaining ring 8 is fixed on the rotating shaft by screws, and the rubber metal ring and the sleeve abut against the retaining ring 8.
[0015] Furthermore, three rubber-metal rings are provided, and these three rubber-metal rings are arranged sequentially along the axial direction of the rotating shaft.
[0016] Furthermore, the input gear ring has several through holes along the circumferential direction.
[0017] Furthermore, the output wheel has several through holes along the circumference.
[0018] Furthermore, an annular baffle is fitted onto the input gear ring, and the annular baffle is fixed to the output gear ring by screws.
[0019] The beneficial effects of this application compared to the prior art are:
[0020] 1. The coupling of this application incorporates a rubber block between the input and output gear rings. When the unit transmits torque, the torque is transferred to the rubber block via the input gear ring, and then from the rubber block to the output gear ring. The toothed shape of the rubber block increases the bearing area, resulting in less deformation under compressive stress and a compact structure. This design increases the torque transmission capacity of the coupling within a limited space and provides sufficient torsional stiffness. Simultaneously, the rubber block possesses high elasticity and damping characteristics, undergoing compressive deformation when the unit transmits torque, effectively reducing torsional vibration of the coupling. Therefore, the coupling in this embodiment is both compact and possesses excellent vibration reduction performance, meeting the unit's operational requirements.
[0021] 2. The coupling of this application can compensate for axial and radial misalignment between the power input and output ends of the unit. When axial misalignment occurs between the power input and output ends, the output disc can slide freely axially on the sleeve, and axial sliding can also occur between the input gear ring and the output gear ring, thus compensating for the axial displacement of the unit. When radial misalignment occurs between the power input and output ends, the protrusions on the rubber block deform, which can compensate for the radial displacement of the unit, increasing the overall compensation capability of the machine.
[0022] 3. The coupling in this application, through the design of rubber blocks and rubber-metal rings, can reduce the vibration of the unit. Due to the high elasticity and damping characteristics of the rubber blocks and rubber-metal rings, they undergo compressive deformation when the unit transmits torque, effectively reducing the torsional vibration of the coupling. Simultaneously, when shaft vibration exists in the unit, the power input end transmits the vibration to the power output end through two paths. Path one is through the input gear ring via the rubber block to the output gear ring and output disc; this path absorbs axial vibration through the deformation of the rubber block. Path two is through the input gear ring via the rubber-metal ring and sleeve to the output disc; this path absorbs axial vibration through the deformation of the rubber-metal ring. In other words, the combined action of the rubber blocks and rubber-metal rings effectively reduces the shaft vibration of the unit.
[0023] 4. The coupling of this application has good insulation capabilities through the design of rubber blocks and rubber-metal rings. When there is leakage at the power input end of the unit, the current is transmitted from the input gear ring to the rubber block and rubber-metal ring respectively, and is isolated by the rubber block and rubber-metal ring, thereby protecting the equipment at both ends of the unit from electro-corrosion. Attached Figure Description
[0024] The accompanying drawings, which form part of this application, are provided to further illustrate this application.
[0025] Figure 1 This is a cross-sectional schematic diagram of a vibration-damping coupling with a compact structure and high torsional transmission capacity according to the present invention.
[0026] Figure 2 for Figure 1 A cross-sectional view of section BB.
[0027] Figure 3 for Figure 1 A magnified view of a portion of point A in the middle.
[0028] Explanation of reference numerals in the attached figures:
[0029] Input gear ring 1, first connecting part 11, external gear 12, rotating shaft 13, external gear ring 14;
[0030] Output gear ring 2, internal gear 21;
[0031] Output wheel 3, second connecting part 31, support ring 32;
[0032] Annular baffle 4;
[0033] Rubber block 5, protrusion 51;
[0034] Rubber-metal ring 6;
[0035] Sleeve 7;
[0036] 8. Detailed Implementation
[0037] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0038] See Figure 1 This embodiment describes a compact, high-torque-transmission damping coupling primarily used for transmitting torque. It includes an input gear ring 1, an output gear ring 2, an output wheel disc 3, an annular baffle 4, and multiple rubber blocks 5. Combined with... Figure 1 The input gear ring 1 is hub-shaped, with a first connecting part 11 at one end. This first connecting part 11 is connected to the power input end of the unit via a reamed bolt. The other end of the input gear ring 1 has an outer gear ring 14, with a uniform ring of outer teeth 12 on its outer circumference. The output gear ring 2 has a uniform ring of inner teeth 21 on its inner circumference. The output gear ring 2 is fitted over the input gear ring 1, with the inner teeth 21 of the output gear ring 2 inserted between the outer teeth 12 of the input gear ring 1. The inner teeth 21 of the output gear ring 2 and the outer teeth 12 of the input gear ring 1 are arranged alternately. An installation cavity is formed between adjacent inner teeth 21 and outer teeth 12. A toothed rubber block 5 is tightened in each installation cavity. The rubber block 5 is used to transmit the torque of the input gear ring 1 to the output gear ring 2. An annular baffle 4 is fitted onto the first connecting part 11 of the input gear ring 1 and fixed to one end face of the output gear ring 2 by screws. One end of the output wheel 3 is connected to the other end face of the output gear ring 2 by screws. The annular baffle 4 and the output wheel 3 are used for axial positioning of the rubber block 5. The other end of the output wheel 3 is provided with a second connecting part 31, which is connected to the power output end of the unit by a reamed bolt for power output.
[0039] When the power input end of the unit inputs torque to the input gear ring 1 through the first connecting part 11, the input gear ring 1 transmits the torque to the evenly distributed rubber blocks 5. Each rubber block 5 transmits the torque to the output gear ring 2, and the output gear ring 2 then transmits it to the power output end through the output wheel 3, thus completing the torque transmission. In this embodiment, the input gear ring 1 and the output gear ring 2 transmit torque through toothed rubber blocks 5, and the size of the rubber blocks 5 is larger than the size of the outer teeth 12 of the input gear ring 1 and the inner teeth 21 of the output gear ring 2. The toothed rubber blocks 5 have a large force-bearing area and resistance to deformation. During the torque transmission process, the rubber blocks 5 mainly bear the squeezing action from the input gear ring 1, and the stress generated is mainly compressive stress rather than shear stress, while its deformation is small. Based on the above characteristics, this structure improves the torque transmission capacity of the coupling. In addition, under the condition of achieving the same torque transmission performance, the design of this embodiment makes the overall structure more compact, thereby further improving the torque transmission capacity of the coupling within a limited space and ensuring that it has sufficient torsional stiffness. Meanwhile, due to the high elasticity and damping properties of the rubber block 5, it undergoes compression deformation when the unit transmits torque, effectively attenuating the torsional vibration and shaft vibration of the coupling. This allows the coupling in this embodiment to possess excellent vibration reduction performance while maintaining a compact structure. Furthermore, the torque is transmitted between the input gear ring 1 and the output gear ring 2 via the rubber block 5, eliminating the need for lubrication. The overall structure is simple and easy to assemble and disassemble. Moreover, in the event of electrical leakage at the power input end of the unit, the rubber block 5's excellent electrical insulation properties isolate the current transmitted from the input gear ring 1 to the rubber block 5, protecting the unit equipment at both ends from electrolytic corrosion.
[0040] See Figure 1 To achieve heat dissipation of the rubber block 5, the axial length of the rubber block 5 in this embodiment gradually decreases from the outside to the inside. That is, the two end faces of the rubber block 5 are concave inward on the side near the input gear ring 1, similar to a waisted design, thus providing heat dissipation space for the rubber block 5. At the same time, the end of the rubber block 5 facing the input gear ring 1 is provided with two trapezoidal protrusions 51. These two protrusions 51 are arranged along the length direction of the rubber block 5. The design of the protrusions 51 creates a gap between the inner end face of the rubber block 5 and the annular surface of the input gear ring 1. This gap is open to the outside atmosphere, thereby achieving the purpose of heat dissipation. In addition, the design of the protrusions 51 on the rubber block 5 greatly reduces the radial stiffness of the rubber block 5. When there is a radial offset between the power input end and the power output end of the unit, the deformation of the protrusions 51 on the rubber block 5 can provide radial compensation for the whole machine, increasing the radial compensation capability of the whole machine.
[0041] See Figure 1In this embodiment, a rotating shaft 13 is coaxially arranged inside the input gear ring 1. The rotating shaft 13 has a shoulder, and three rubber metal rings 6 and sleeves 7 are sequentially fitted onto the rotating shaft 13 from the inside out. These three rubber metal rings 6 are arranged sequentially along the axial direction of the rotating shaft 13. One end of the left rubber metal ring 6 abuts against the shoulder of the rotating shaft 13. A retaining ring 8 is also provided at the right end of the rotating shaft 13, and the retaining ring 8 is fixed to the right end face of the rotating shaft 13 by screws. The right rubber metal ring 6 abuts against the retaining ring 8. The retaining ring 8 and the shoulder of the rotating shaft 13 axially limit the movement of the rubber metal ring 6 and sleeve 7, preventing them from shifting. Figure 1 A support ring 32 is coaxially arranged on the side of the output wheel 3 facing the input gear ring 1. The sleeve 7 is inserted into the support ring 32 and supported by the support ring 32. The sleeve 7 and the support ring 32 can move axially. When there is an axial offset between the power input end and the power output end of the unit, since the output wheel 3 can slide freely axially on the sleeve 7, and the input gear ring 1 and the rubber block 5 can also slide axially, the unit in this embodiment has a large axial compensation capability, which can compensate for the axial displacement of the unit. In addition, in the event of electrical leakage at the power input end of the unit, since the rubber metal ring 6 has good electrical insulation properties, the current is isolated after being transmitted from the shaft 13 of the input gear ring 1 to the rubber metal ring 6, protecting the unit equipment at both ends from electrolytic corrosion. Furthermore, the radial vibration generated during the operation of the unit can be effectively absorbed by the deformation of the rubber metal ring 6, reducing the radial vibration of the unit.
[0042] See Figure 1 In this embodiment, several through holes are provided on the input gear ring 1 and the output wheel 3 along the circumferential direction. On the one hand, this can reduce the weight of the entire coupling, and on the other hand, it can better dissipate heat.
[0043] As can be seen, the coupling in this embodiment, through the design of rubber block 5 and rubber-metal ring 6, not only makes the entire coupling structure more compact and can transmit greater torque, but also has good vibration reduction performance, axial and radial displacement compensation ability and insulation performance.
[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions created by the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions created by the present invention without departing from the essence and scope of the technical solutions created by the present invention.
Claims
1. A compact structure and large torque capacity vibration damping coupling, characterized by, The utility model relates to a kind of input and output torque transmission mechanism, including: Input gear ring, one end is connected power input, the outer circumferential surface of the other end is equipped with a circle outer gear; Output gear ring, inner circumferential surface is equipped with a circle inner gear, output gear ring is covered in input gear ring outside, the outer gear of input gear ring is between the inner gear of output gear ring, and an installation cavity is formed between adjacent inner gear and outer gear; Rubber block, insert into installation cavity and expand tightly, for the torque of input gear ring is transmitted to output gear ring; Output wheel disc, one end is connected output gear ring, the other end is connected power output, for power output.
2. The compact structure large torque capacity damping coupling according to claim 1, characterized in that, The inner gear of output gear ring and the outer gear of input gear ring are alternately arranged in sequence.
3. The compact structure and large torque capacity damping coupling according to claim 1, characterized in that, Rubber block is toothed rubber block, and the axial length of rubber block gradually decreases from outside to inside.
4. The compact structure and large torque capacity damping coupling according to claim 1, characterized in that, The end of rubber block towards input gear ring is equipped with two protrusions, and the two protrusions are arranged along the length direction of rubber block.
5. The compact structure and large torque capacity damping coupling according to claim 1, characterized in that, Input gear ring is still coaxially arranged with a shaft, and output wheel disc is still coaxially arranged with a support ring, the shaft is inserted into support ring and supported by support ring, and the shaft and the support ring can move axially.
6. The compact structure large torque capacity damping coupling according to claim 5, characterized in that, The shaft is also provided with a shoulder, and rubber metal ring and sleeve are sequentially sleeved on the shaft from inside to outside, one end of rubber metal ring abuts on the shoulder of the shaft, the side of sleeve towards output wheel disc is also provided with stop ring 8, stop ring 8 is fixed on the shaft by screw, and rubber metal ring and sleeve abut on stop ring 8.
7. The compact structure large torque capacity damping coupling according to claim 1, characterized in that, Rubber metal ring is provided with three, and the three rubber metal rings are sequentially arranged along the direction of the shaft of the shaft.
8. The compact structure large torque capacity damping coupling according to claim 1, characterized in that, Input gear ring is provided with a plurality of through holes in circumferential direction.
9. The compact structure large torque capacity damping coupling according to claim 1, characterized in that, Output wheel disc is provided with a plurality of through holes in circumferential direction.
10. The compact structure and large torque capacity damping coupling according to claim 1, characterized in that, Input gear ring is also sleeved with a ring baffle, and the ring baffle is fixed on output gear ring by screw.