Hybrid coupling suitable for large torque fluctuation and frequent impact

Abstract

The invention relates to a hybrid coupling suitable for large torque fluctuation and frequent impact. The hybrid coupling comprises a driven half coupling, a driven adapter disc, a spacing shaft, an outer spacer bush, an inner spacer bush, a driving adapter shaft and a driving half coupling which are in transmission connection in sequence, a diaphragm assembly is installed between the driven adapter disc and the spacing shaft, and an elastic block is arranged between the outer spacer bush and the inner spacer bush; the other side of the spacer bush is connected with the driving adapter disc, the driving adapter disc, the spacing shaft and the outer spacer bush define a transmission cavity, the elastic block is located in the transmission cavity and abuts against the inner wall of the transmission cavity, and the driven half coupling and the driven adapter disc, the spacing shaft and the outer spacer bush, and the driving adapter shaft and the driving half coupling are connected through bolts and nuts in a matched mode. The elastic blocks generate shearing and compression deformation along with torque fluctuation, impact energy is absorbed, peak torque transmission is reduced, and the damping effect is excellent; the diaphragm assembly compensates axial, angular and radial deviations, the elastic block further counteracts installation errors and thermal deformation, and the compensation capacity is comprehensive.

Description

Technical Field

[0001] This invention belongs to the field of coupling technology and relates to hybrid couplings suitable for large torque fluctuations and frequent impacts. Background Technology

[0002] Traditional couplings are mainly divided into two categories: rigid couplings and flexible couplings. Metal diaphragm couplings belong to the category of flexible couplings and are widely used in the fluid machinery industry, such as pumps, fans, and compressors. The function of a coupling is to connect the driving shaft and the driven shaft, thereby transmitting torque from the driving side to the driven side. Metal diaphragm couplings have advantages such as high transmission accuracy, good reliability, and strong environmental adaptability, but their performance in vibration damping and buffering is average, making them unsuitable for applications with large torque fluctuations. While rubber and polyurethane elastic block couplings have good vibration damping and buffering capabilities, their transmission accuracy, durability, and high-temperature adaptability are relatively poor. Therefore, there is an urgent need for a hybrid coupling that combines the advantages of both. Summary of the Invention

[0003] The purpose of this invention is to provide a hybrid coupling suitable for large torque fluctuations and frequent impacts, which can solve the above problems and has comprehensive compensation capabilities.

[0004] According to the technical solution provided by the present invention: a hybrid coupling suitable for large torque fluctuations and frequent impacts includes a driven half-coupling, a driven adapter plate, a spacer shaft, an outer spacer, an inner spacer, a drive adapter shaft, and a driving half-coupling connected in sequence. A diaphragm assembly is installed between the driven adapter plate and the spacer shaft. An elastic block is provided between the outer spacer and the inner spacer. The drive adapter plate is connected to the other side of the spacer. The drive adapter plate, the spacer shaft, and the outer spacer form a transmission cavity. The elastic block is located in the transmission cavity and abuts against the inner wall of the transmission cavity.

[0005] As a further improvement of the present invention, the driven half-connector and the driven adapter plate, the spacer shaft and the outer spacer sleeve, the drive adapter shaft and the driving half-connector are connected by bolts and nuts.

[0006] As a further improvement of the present invention, a spring washer is fitted onto the spacer bolt.

[0007] As a further improvement of the present invention, the diaphragm assembly consists of a diaphragm and a diaphragm ring; the diaphragm ring has a through hole in the middle and a diaphragm groove on the outer periphery of the diaphragm ring, with the diaphragm located in the diaphragm groove.

[0008] As a further improvement of the present invention, the diaphragm is made of multiple layers of stainless steel diaphragms stacked together.

[0009] As a further improvement of the present invention, the inner side of the driven adapter plate is provided with a first through hole and a first clearance hole at intervals, and the outer side of the spacer shaft is provided with a second through hole and a second clearance hole at intervals. The positions of the first through hole and the second clearance hole, and the first clearance hole and the second through hole are corresponding. After the bolt passes through the first through hole, the diaphragm assembly and the second clearance hole, the nut is screwed on. After the bolt passes through the second through hole, the diaphragm assembly and the first clearance hole, the nut is screwed on.

[0010] As a further improvement of the present invention, a bushing is fitted onto the bolt.

[0011] As a further improvement of the present invention, the elastic block material may be selected from natural rubber, polyurethane or hydrogenated nitrile rubber.

[0012] As a further improvement of the present invention, the inner spacer and the drive adapter shaft are connected by interference fit and key.

[0013] The positive and progressive effects of this invention are as follows: The elastic block of this invention undergoes shear and compression deformation as torque fluctuates, absorbing impact energy, reducing peak torque transmission, and providing excellent vibration reduction. The diaphragm assembly compensates for axial, angular, and radial deviations, and the elastic block further offsets installation errors and thermal deformation, providing comprehensive compensation capabilities. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the present invention. Detailed Implementation

[0015] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0016] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0017] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the invention described herein. Furthermore, terms such as "comprising" and "having" mean that in addition to those already listed in "comprising" and "having," other unlisted contents may also be included; for example, a process, method, system, product, or device may include a series of steps or units, not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.

[0018] Due to the angle of the drawing, some parts may not be drawn, but their positions and connections can be understood from the text descriptions.

[0019] like Figure 1 As shown, the present invention is a hybrid coupling suitable for large torque fluctuations and frequent impacts, including a driven half coupling 1, a driven adapter plate 3, a spacer shaft 9, an outer spacer sleeve 11, an inner spacer sleeve 14, a drive adapter shaft 16, and a drive half coupling 17 connected in sequence. A diaphragm assembly 6 is installed between the driven adapter plate 3 and the spacer shaft 9, and an elastic block 13 is provided between the outer spacer sleeve 11 and the inner spacer sleeve 14.

[0020] The driven half-connector 1 and the driven adapter plate 3, the spacer shaft 9 and the outer spacer sleeve 11, the drive adapter shaft 16 and the active half-connector 17 are connected by bolts 4 and nuts 2.

[0021] The other side of the spacer 11 is connected to the drive adapter plate 15 via a spacer bolt 18. A spring washer 19 is fitted on the spacer bolt 18 to increase the connection strength between the spacer 11 and the drive adapter plate 15. The drive adapter plate 15, the spacer shaft 9, and the outer spacer 11 form a transmission cavity, and the elastic block 13 is located in the transmission cavity and abuts against the inner wall of the transmission cavity.

[0022] The diaphragm assembly 6 consists of a diaphragm 6-1 and a diaphragm ring 6-2. The diaphragm ring 6-2 has a through hole in the middle and a diaphragm groove on its outer periphery, with the diaphragm 6-1 located in the diaphragm groove. The diaphragm 6-1 is made of multiple layers of stainless steel diaphragms, each with a thickness of 0.3-0.5 mm, and the number of layers can be adjusted according to the torque requirements.

[0023] The driven adapter plate 3 has a first through hole and a first clearance hole 3-1 spaced apart on its inner side, and a second through hole and a second clearance hole spaced apart on its outer side. The positions of the first through hole and the second clearance hole, and the first clearance hole 3-1 and the second through hole, correspond to each other. After the bolt 4 passes through the first through hole, the diaphragm assembly 6, and the second clearance hole, the nut 2 is screwed on to complete the connection between the driven adapter plate 3 and the diaphragm assembly 6. After the bolt 4 passes through the second through hole, the diaphragm assembly 6, and the first clearance hole 3-1, the nut 2 is screwed on to complete the connection between the spacer shaft 9 and the diaphragm assembly 6. The diaphragm assembly 6 provides radial and axial error compensation for the unit. To enhance the connection strength, a bushing 7 is fitted onto the bolt 4, located between the head of the bolt 4 and the diaphragm assembly 6.

[0024] The dimensions of the diaphragm ring 6-2 and the upper nut 2 are smaller than the aforementioned clearance hole.

[0025] The elastic block 13 can be made of natural rubber, polyurethane or hydrogenated nitrile rubber. The elastic block can be cylindrical or rectangular, and there are 8 to 16 of them. They are evenly distributed along the circumference to transmit the torque between the outer spacer 11 and the inner spacer 14.

[0026] The inner spacer 14 and the drive adapter shaft 16 are connected by an interference fit and a key. The end of the drive adapter shaft 16 is installed in the inner spacer 14 by an interference fit. In order to further improve the torque transmission efficiency of the two, the inner wall of the inner spacer 14 and the outer periphery of the drive adapter shaft 16 are provided with matching keyways, and the transmission key 5 is installed in the keyways.

[0027] Driven half-connector 1 is connected to the driven motor shaft head, and driving half-connector 17 is connected to the driving motor shaft head.

[0028] Torque transmission path: Active half-connection 17, drive adapter shaft 16, inner spacer 14, elastic block 13, outer spacer 11, spacer shaft 9, diaphragm assembly 6, driven adapter plate 3, driven half-connection 1.

[0029] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A hybrid coupling suitable for large torque fluctuations and frequent impacts, characterized in that, The device includes a driven half-connector (1), a driven adapter plate (3), a spacer shaft (9), an outer spacer sleeve (11), an inner spacer sleeve (14), a drive adapter shaft (16), and a driving half-connector (17) connected in sequence. A diaphragm assembly (6) is installed between the driven adapter plate (3) and the spacer shaft (9). An elastic block (13) is provided between the outer spacer sleeve (11) and the inner spacer sleeve (14). The other side of the spacer sleeve (11) is connected to the drive adapter plate (15). The drive adapter plate (15), the spacer shaft (9), and the outer spacer sleeve (11) form a transmission cavity. The elastic block (13) is located in the transmission cavity and abuts against the inner wall of the transmission cavity.

2. The hybrid coupling as described in claim 1, suitable for applications with large torque fluctuations and frequent impacts, is characterized in that... The driven half-connector (1) and driven adapter plate (3), the spacer shaft (9) and outer spacer sleeve (11), the drive adapter shaft (16) and the active half-connector (17) are connected by bolts (4) and nuts (2).

3. The hybrid coupling as described in claim 1, suitable for applications with large torque fluctuations and frequent impacts, is characterized in that... A spring washer (19) is fitted on the spacer bolt (18).

4. The hybrid coupling as described in claim 1, suitable for applications with large torque fluctuations and frequent impacts, is characterized in that... The diaphragm assembly (6) consists of a diaphragm (6-1) and a diaphragm ring (6-2); the diaphragm ring (6-2) has a through hole in the middle and a diaphragm groove on the outer periphery of the diaphragm ring (6-2), and the diaphragm (6-1) is located in the diaphragm groove.

5. The hybrid coupling as described in claim 4, suitable for applications with large torque fluctuations and frequent impacts, is characterized in that... The diaphragm (6-1) is made of multiple layers of stainless steel diaphragms.

6. The hybrid coupling as described in claim 1, suitable for applications with large torque fluctuations and frequent impacts, is characterized in that... The driven adapter plate (3) has a first through hole and a first clearance hole (3-1) spaced apart on its inner side, and a second through hole and a second clearance hole spaced apart on its outer side. The first through hole and the second clearance hole, the first clearance hole (3-1) and the second through hole are in corresponding positions. The bolt (4) passes through the first through hole, the diaphragm assembly (6) and the second clearance hole and then screws on the nut (2). The bolt (4) passes through the second through hole, the diaphragm assembly (6) and the first clearance hole (3-1) and then screws on the nut (2).

7. The hybrid coupling as described in claim 6, suitable for large torque fluctuations and frequent impacts, is characterized in that... A bushing (7) is fitted onto the bolt (4).

8. The hybrid coupling as described in claim 1, suitable for large torque fluctuations and frequent impacts, is characterized in that... The elastic block (13) can be made of natural rubber, polyurethane or hydrogenated nitrile rubber.

9. The hybrid coupling as described in claim 1, suitable for applications with large torque fluctuations and frequent impacts, is characterized in that... The inner spacer (14) and the drive adapter shaft (16) are connected by interference fit and key.

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