Flexible couplings with load capacity

Abstract

This utility model belongs to the field of coupling manufacturing technology, specifically relating to a novel load-bearing flexible coupling, including an upper shaft hole, a lower shaft hole, and a flexible connecting sleeve. The upper shaft hole is used to install the shaft head of the driving component, and the lower shaft hole is used to install the shaft head of the driven component. The flexible connecting sleeve connects the upper shaft hole and the lower shaft hole, and the upper shaft hole, flexible connecting sleeve, and lower shaft hole are integrally formed. This novel load-bearing flexible coupling, through optimized structural design, especially the use of a flexible connecting sleeve of specific size and shape, achieves a bending area of ​​15 square millimeters, a bending strength of 785 MPa, and a maximum service strength of 47 nm, enabling it to stably transmit large loads and effectively broadening the application range of flexible couplings.

Description

Technical Field

[0001] This utility model belongs to the field of coupling manufacturing technology, specifically relating to a flexible coupling capable of carrying a load. Background Technology

[0002] In the field of assembly equipment technology, flexible couplings are a widely used key component. Their core advantage lies in their ability to easily achieve low-speed connections between two components with poor coaxiality, effectively compensating for misalignment in the shaft alignment of the two connected components, and playing a vital role in mechanical transmission systems.

[0003] However, traditional flexible couplings have significant performance limitations, namely, their generally low load-carrying capacity. This deficiency makes them unsuitable for applications requiring the transmission of large loads, thus limiting their use in mechanical devices with high load-carrying capacity requirements.

[0004] With the increasing complexity and high performance of industrial equipment, higher demands are being placed on the stability and reliability of flexible couplings under load conditions in actual production. How to improve the load-bearing capacity of flexible couplings while maintaining their ability to compensate for coaxiality deviations has become a crucial technical problem that urgently needs to be solved in the field of assembly equipment technology. Utility Model Content

[0005] The purpose of this invention is to provide a load-bearing flexible coupling to solve the problems existing in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel load-bearing flexible coupling, comprising an upper shaft hole, a lower shaft hole, and a flexible connecting sleeve; the upper shaft hole is used to install the shaft head of the active component, the lower shaft hole is used to install the shaft head of the passive component, the flexible connecting sleeve connects the upper shaft hole and the lower shaft hole, and the upper shaft hole, the flexible connecting sleeve, and the lower shaft hole are integrally formed structures.

[0007] Preferably, both the upper and lower shaft holes are provided with set screws for locking the shaft head installed in the shaft hole.

[0008] Preferably, the coupling is made of 40Gr material.

[0009] Preferably, the coupling has a height of 54mm, an upper shaft hole length of 20mm, a lower shaft hole length of 20mm, and a flexible connecting sleeve length of 14mm.

[0010] Preferably, the inner diameter of the shaft hole is 8mm and the outer diameter of the coupling is 18mm.

[0011] Preferably, the flexible connecting sleeve is provided with four two-thirds semicircular notches, each notch spaced 90° apart along the circumference. In the radial direction of the flexible connecting sleeve, the depth of the notch extends to two-thirds of the radius of the connecting sleeve, extending from one end of the connecting sleeve to the other end, and the length accounts for most or all of the total length of the connecting sleeve.

[0012] The beneficial effects of this utility model are as follows: This new type of load-bearing flexible coupling, through optimized structural design, especially the use of a flexible connecting sleeve of a specific size and shape, has a bending resistance area of ​​15 square millimeters, a bending strength of 785 MPa, and a maximum service strength of 47 nm. It can stably transmit large loads, effectively broadening the application range of flexible couplings. It exhibits excellent performance in mechanical transmission systems that require the transmission of large torques, can adapt to more high-load working scenarios, and improves the working efficiency and stability of mechanical equipment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0014] It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0015] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixed connection," and "fixed connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings and preferred embodiments.

[0018] like Figure 1 As shown, a novel load-bearing flexible coupling includes an upper shaft hole 1, a lower shaft hole 2, and a flexible connecting sleeve 3. The upper shaft hole is used to install the shaft head of the driving component, and the lower shaft hole is used to install the shaft head of the driven component. The flexible connecting sleeve connects the upper shaft hole and the lower shaft hole, and the upper shaft hole, flexible connecting sleeve, and lower shaft hole are integrally formed. The flexible connecting sleeve has four two-thirds semicircular notches 4, each notch spaced 90° along the circumference. In the radial direction of the flexible connecting sleeve, the notch depth extends to two-thirds of the radius of the connecting sleeve, extending from one end of the connecting sleeve to the other, and the length accounts for most or all of the total length of the connecting sleeve. The coupling is made of 40Gr material, an alloy structural steel with good comprehensive mechanical properties, high strength, good toughness, and good hardenability. This ensures that the coupling maintains structural stability under heavy loads and complex working conditions, and is not prone to deformation, breakage, or other failures, further improving the reliability and service life of the coupling, reducing equipment downtime due to component damage, and ensuring production continuity.

[0019] Both the upper and lower shaft holes are equipped with set screws. After the shaft ends of the driving and driven components are installed in place, use a suitable tool (such as a wrench) to tighten the set screws in the upper and lower shaft holes in sequence. During tightening, ensure that the set screws are evenly stressed to firmly fix the shaft ends in the shaft holes, preventing loosening or displacement of the shaft ends during equipment operation, thereby ensuring that the coupling can stably transmit power.

[0020] To further illustrate its use, consider a practical application example: This novel load-bearing flexible coupling is employed in a low-speed transmission device. Manufactured from 40Gr material, the coupling's dimensions are as follows: coupling height 54mm, upper shaft hole length 20mm, lower shaft hole length 20mm, flexible connecting sleeve length 14mm, shaft hole inner diameter 8mm, and coupling outer diameter 18mm. The flexible connecting sleeve features four two-thirds semicircular notches, with a bending area of ​​15 square millimeters and a bending strength of 785 MPa. The maximum service strength of the coupling is 47 nm. During equipment operation, even with a certain degree of concentricity deviation between the driving and driven components, the coupling, thanks to the special structure of the flexible connecting sleeve, effectively buffers and compensates for the deviation, achieving smooth power transmission and ensuring long-term stable operation of the equipment. This fully demonstrates the advantages of this novel load-bearing flexible coupling in solving practical engineering problems.

[0021] During actual use, operators should regularly inspect and maintain the coupling. Observe whether there are any signs of looseness in the mating parts between the shaft hole and the shaft end, and whether the set screws are tight; check the surface of the flexible coupling for cracks, deformation, or other abnormalities. If any problems are found, repair or replacement should be carried out promptly to ensure the coupling is always in good working condition and extend the service life of the equipment. At the same time, select the appropriate coupling model based on the equipment's operating conditions and load to avoid damage to the coupling due to overload operation.

[0022] It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A load-bearing flexible coupling, characterized in that, It includes an upper shaft hole, a lower shaft hole, and a flexible connecting sleeve; the upper shaft hole is used to install the shaft head of the active component, the lower shaft hole is used to install the shaft head of the passive component, and the flexible connecting sleeve connects the upper shaft hole and the lower shaft hole. The upper shaft hole, the flexible connecting sleeve, and the lower shaft hole are integrally formed structures. The flexible connecting sleeve is provided with four two-thirds semicircular notches, each notch is spaced 90° apart along the circumference, and in the radial direction of the flexible connecting sleeve, the notch depth extends to two-thirds of the radius of the connecting sleeve, extending from one end of the connecting sleeve to the other end, and the length accounts for most or all of the total length of the connecting sleeve.

2. The load-bearing flexible coupling according to claim 1, characterized in that, Both the upper and lower shaft holes are equipped with set screws for locking the shaft head installed in the shaft hole.

3. The load-bearing flexible coupling according to claim 1, characterized in that, The coupling is made of 40Gr material.

4. The load-bearing flexible coupling according to claim 1, characterized in that, The coupling has a height of 54mm, an upper shaft hole length of 20mm, a lower shaft hole length of 20mm, and a flexible connecting sleeve length of 14mm.

5. The load-bearing flexible coupling according to claim 1, characterized in that, The inner diameter of the shaft hole is 8mm, and the outer diameter of the coupling is 18mm.

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