A viscous damping vibration reduction flexible coupling

Abstract

The present invention relates to a high-speed flexible coupling, comprising a transmission shaft, the end of which is connected to a flexible member and an adapter from the inside to the outside; a deformation ring groove is provided in the axial middle of the flexible member, dividing the flexible member into an inner end face and an outer end face; a screw hole for connecting the outer end face of the flexible member and a pin hole for the outer end face of the flexible member are drilled in the outer end face of the flexible member; an outer end center deformation groove and an outer end surrounding deformation groove are provided in the outer end face of the flexible member, and the outer end center deformation groove passes through the middle of the outer end face of the flexible member. The present invention has a simple structure and a small number of parts; it can compensate for radial and angular misalignment between the output shaft and the input shaft. At the same time, a locating pin is used for connection, so that there is no gap or idle stroke when the torque is transmitted between the input shaft and the output shaft, and the torque transmission is more stable and impact-free. When an unexpected axial impact occurs in the system, the limit pin can play an axial limiting function, protecting the flexible member from damage, thereby increasing the service life of the coupling.

Description

Technical Field

[0001] The present invention relates to a viscous damping vibration reduction flexible coupling, which uses a viscous damping device to achieve structural energy consumption and vibration reduction, and can suppress adverse alternating impact torque while transmitting steady-state torque. It is suitable for applications with large torque fluctuations. Background Art

[0002] In the field of modern mechanical transmission, alternating impact torque and vibration are common problems and have attracted increasing attention. To avoid adverse effects such as fatigue damage caused by vibration, vibration reduction requirements have been widely incorporated into the design and manufacturing of mechanical equipment.

[0003] Existing flexible couplings, such as those described in the applicant's application 200820039003.6, can achieve functions such as transmitting torque and compensating for misalignment, but cannot significantly buffer and reduce vibrations under adverse alternating impact torques, and are difficult to cope with applications with large torque fluctuations. Summary of the Invention

[0004] The purpose of the present invention is to provide a viscous damping vibration reduction flexible coupling that can solve the problem that alternating impact torque cannot play a significant buffering and vibration reduction role and is difficult to cope with applications with large torque fluctuations.

[0005] According to the technical solution provided by the present invention: a viscous damping vibration reduction flexible coupling includes a central shaft, one end of the central shaft is connected to a first adapter disk, a first flexible part and an input flange in sequence from the inside to the outside, the other end of the central shaft is connected to a second adapter disk, a second flexible part and an output flange in sequence from the inside to the outside, and both ends of the central shaft are connected to a viscous damping device; the viscous damping device includes a damping disk and a damping shell, the damping disk is connected to one end of the central shaft through a first connecting part, and the damping shell is connected to the other end of the central shaft through a second connecting part, and a damping medium is provided between the damping disk and the damping shell.

[0006] As a further improvement of the present invention, the damping medium is damping oil; the damping disc is partially located in the damping housing, the damping housing, the first connecting member and the damping disc form a damping oil chamber, and the damping oil is located in the damping oil chamber; a seal is installed between the damping housing, the first connecting member and the damping disc.

[0007] As a further improvement of the present invention, the inner end of the damping disk is connected to one end of the first connecting member through a first connecting bolt, and the other end of the first connecting member is radially connected to the left end portion of the central shaft through a second connecting bolt; the inner end of the damping housing is connected to one end of the second connecting member through a third connecting bolt, and the other end of the second connecting member is radially connected to the right end portion of the central shaft through a fourth connecting bolt.

[0008] As a further improvement of the present invention, the damping shell adopts a split structure; the damping shell includes a first damping half shell and a second damping half shell, and the outer end of the first damping half shell and the outer end of the second damping half shell are connected by damping shell connecting bolts; the damping disk is placed in the first damping half shell and the second damping half shell with a gap.

[0009] As a further improvement of the present invention, a first seal is provided at the contact position between the first damping half shell and the first connecting member, and a second seal is provided at the contact position between the second damping half shell and the damping disk; and damping oil is filled in a sealed damping oil cavity formed between the first damping half shell and the second damping half shell, the damping disk and the first connecting member.

[0010] As a further improvement of the present invention, the first connecting member and the second connecting member are cylindrical and sleeved on the left and right sides of the central axis.

[0011] As a further improvement of the present invention, the two ends of the central shaft are respectively connected to the first adapter plate and the second adapter plate through adapter plate connecting bolts; the input flange, the first flexible part and the first adapter plate are connected through a fastening assembly; the output flange, the second flexible part and the second adapter plate are connected through a fastening assembly.

[0012] As a further improvement of the present invention, an oil injection screw hole is drilled on the outer end surface of the damping shell, and a plug is placed in the oil injection screw hole.

[0013] As a further improvement of the present invention, a heat sink is provided on the outer end surface of the damping shell.

[0014] As a further improvement of the present invention, a boss is provided in the middle of the central shaft, and the outer periphery of the boss abuts against the viscous damping device.

[0015] This invention incorporates a viscous damping device within the coupling. When subjected to alternating impact torque, the damping disc and the damping housing undergo relative torsional motion, shearing the viscous liquid within the sealed cavity to generate a damping force. This damping force suppresses the alternating impact torque, converting kinetic energy into heat and dissipating it into the surrounding air, thereby achieving structural energy dissipation and vibration reduction. Compared to traditional flexible couplings, this coupling transmits torque and compensates for misalignment while suppressing adverse alternating impact torque, preventing torsional vibration and protecting the connected machinery. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 Schematic diagram of the viscous damping device in the present invention. DETAILED DESCRIPTION

[0018] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0019] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0020] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate for the embodiments of the present invention described herein. In addition, similar terms such as "including" and "having" mean that in addition to those contents already listed in "including" and "having", other contents that have not been listed may also be "included" and "having"; for example, a process, method, system, product or device that may include a series of steps or units is not necessarily limited to those steps or units that have been clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0021] In the following description of the specific implementation, the coordinate reference Figure 1 ,by Figure 1 The direction perpendicular to the paper is inward as the front, and the direction perpendicular to the paper is outward as the back. Figure 1 The left and right directions in are left and right, Figure 1 The up and down directions in are up and down.

[0022] Figure 1-2 The output flange 20 includes an input flange 1, a first flexible member 3, a first adapter plate 4, a central shaft 7, a first connecting member 8, a first connecting bolt 9, a second connecting member 15, a second adapter plate 17, a second flexible member 19, an output flange 20, and the like.

[0023] like Figure 1As shown, the present invention is a viscous damping and vibration-reducing flexible coupling comprising a central shaft 7. One end of the central shaft 7 is sequentially connected to a first adapter plate 4, a first flexible member 3, and an input flange 1, from the inside out. The other end of the central shaft 7 is sequentially connected to a second adapter plate 17, a second flexible member 19, and an output flange 20, from the inside out. Both ends of the central shaft 7 are connected to a viscous damping device. The viscous damping device comprises a damping disc 10 and a damping housing. The damping disc 10 is connected to one end of the central shaft 7 via a first connecting member 8, and the damping housing is connected to the other end of the central shaft 7 via a second connecting member 15. A damping medium is provided between the damping disc 10 and the damping housing.

[0024] The viscous damping device is positioned midway around the center shaft 7. In this embodiment, the damping medium is damping oil. A damping disc 10 is partially located within the damping housing. The damping housing, first connecting member 8, and damping disc 10 form a damping oil chamber for storing the damping oil. Seals are installed between the damping housing, first connecting member 8, and damping disc 10.

[0025] The inner end of the damping disc 10 is connected to one end of the first connecting member 8 via a first connecting bolt 9. The other end of the first connecting member 8 is radially connected to the left end of the central shaft 7 via a second connecting bolt 6. Thus, the damping disc 10 moves synchronously with the input end of the central shaft 7. The outer end of the damping disc 10 is positioned within the damping housing with a gap.

[0026] The inner end of the damping housing is connected to one end of the second connecting member 15 via a third connecting bolt 14, and the other end of the second connecting member 15 is radially connected to the right end of the central shaft 7 via a fourth connecting bolt 16. Thus, the damping housing and the output end of the central shaft 7 move synchronously.

[0027] To facilitate production and assembly of the damping housing, the damping housing adopts a split structure. The damping housing comprises a first damping half-shell 121 and a second damping half-shell 122, the outer ends of which are connected by damping housing connecting bolts 13. The damping disc 10 is spaced between the first and second damping half-shells 121, 122. Under a certain torque, due to the relative torsional angle between the two ends of the central shaft 7, the synchronous movement of the damping disc 10 with the input end of the central shaft 7, and the synchronous movement of the first and second damping half-shells 121, 122 with the output end of the central shaft 7, relative torsional movement occurs between the damping disc 10 and the first and second damping half-shells 121, 122.

[0028] The inner end of the second damping half shell 122 is connected to the end of the second connecting member 15 through the third connecting bolt 14 .

[0029] like Figure 2As shown, a first seal 123 is provided at the contact position between the first damping half-shell 121 and the first connecting member 8, and a second seal 124 is provided at the contact position between the second damping half-shell 122 and the damping disc 10; the sealed damping oil chamber formed between the first damping half-shell 121 and the second damping half-shell 122, the damping disc 10 and the first connecting member 8 is filled with damping oil.

[0030] The first connecting member 8 and the second connecting member 15 are cylindrical and sleeved on the left and right sides of the central axis 7 .

[0031] In other embodiments, the damping medium is a damping sheet, and both ends of the damping sheet are in close contact with the damping disc 10 and the damping housing.

[0032] The two ends of the central shaft 7 are respectively connected to the first adapter plate 4 and the second adapter plate 17 through the adapter plate connecting bolts 5; the diameter of the central shaft 7 should be as small as possible under the premise of meeting the strength so that the two ends have as large a relative torsion angle as possible.

[0033] The input flange 1, the first flexible member 3 and the first adapter plate 4 are connected via a fastening assembly; the output flange 20, the second flexible member 19 and the second adapter plate 17 are connected via a fastening assembly.

[0034] The outer end surface of the first damping half shell 121 is provided with two symmetrical oil injection screw holes for injecting viscous liquid into the cavity. After the injection is completed, a plug 11 is provided for sealing.

[0035] The outer end surfaces of the first damping half shell 121 and the second damping half shell 122 are provided with a plurality of evenly distributed heat sinks to quickly dissipate the heat generated by the kinetic energy conversion.

[0036] In order to improve the connection stability between the viscous damping device and the intermediate shaft 7, a boss is provided in the middle of the central shaft 7. This boss is in smooth contact with the first connecting tube 7 and the inner hole of the damping disk 10, and plays a supporting role for the flexible damping device. The friction resistance of this smooth contact is small enough to be negligible, and does not affect the relative torsional movement between the damping disk 10 and the central shaft 7.

[0037] The present invention operates as follows: when subjected to alternating impact torque, the damping disc and the damping housing undergo relative torsional motion, shearing the viscous liquid within the sealed chamber to generate a damping force. This damping force suppresses the alternating impact torque, converting kinetic energy into heat and dissipating it into the surrounding air, thereby achieving structural energy dissipation and vibration reduction. While transmitting torque and compensating for misalignment, the coupling can simultaneously suppress adverse alternating impact torque, avoid torsional vibration, and protect the connected machinery.

[0038] It will be understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present invention, and the present invention is not limited thereto. Those skilled in the art will appreciate that various modifications and improvements can be made without departing from the spirit and substance of the present invention, and such modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A viscous damping vibration reduction flexible coupling, characterized in that: The invention comprises a central shaft (7), one end of the central shaft (7) is connected to a first adapter plate (4), a first flexible member (3) and an input flange plate (1) in sequence from the inside to the outside, the other end of the central shaft (7) is connected to a second adapter plate (17), a second flexible member (19) and an output flange plate (20) in sequence from the inside to the outside, and both ends of the central shaft (7) are connected to a viscous damping device; the viscous damping device comprises a damping plate (10) and a damping shell, the damping plate (10) is connected to one end of the central shaft (7) through a first connecting member (8), and the damping shell is connected to one end of the central shaft (7) through a second connecting member (15). The other end of the central shaft (7) is connected, and a damping medium is provided between the damping disc (10) and the damping shell; the damping disc (10) is partially located in the damping shell, and the damping shell adopts a split structure; the damping shell includes a first damping half shell (121) and a second damping half shell (122), and the outer end of the first damping half shell (121) and the outer end of the second damping half shell (122) are connected by a damping shell connecting bolt (13); the damping disc (10) is placed in the first damping half shell (121) and the second damping half shell (122) with a gap.

2. The viscous damping vibration reduction flexible coupling according to claim 1, characterized in that: The damping medium is damping oil; the damping housing, the first connecting member (8), and the damping disc (10) enclose a damping oil chamber, and the damping oil is located in the damping oil chamber; a sealing member is installed between the damping housing, the first connecting member (8), and the damping disc (10).

3. The viscous damping vibration reduction flexible coupling according to claim 1, characterized in that: The inner end of the damping disc (10) is connected to one end of the first connecting member (8) via a first connecting bolt (9), and the other end of the first connecting member (8) is radially connected to the left end of the central shaft (7) via a second connecting bolt (6); the inner end of the damping housing is connected to one end of the second connecting member (15) via a third connecting bolt (14), and the other end of the second connecting member (15) is radially connected to the right end of the central shaft (7) via a fourth connecting bolt (16).

4. The viscous damping vibration reduction flexible coupling according to claim 1, characterized in that: A first sealing member (123) is provided at a contact position between the first damping half-shell (121) and the first connecting member (8), and a second sealing member (124) is provided at a contact position between the second damping half-shell (122) and the damping disc (10); and damping oil is filled in a damping oil cavity sealed between the first damping half-shell (121), the second damping half-shell (122), the damping disc (10), and the first connecting member (8).

5. The viscous damping vibration reduction flexible coupling according to claim 3, characterized in that: The first connecting member (8) and the second connecting member (15) are cylindrical and are sleeved on the left and right sides of the central axis (7).

6. The viscous damping vibration reduction flexible coupling according to claim 1, characterized in that: The two ends of the central shaft (7) are respectively connected to the first adapter plate (4) and the second adapter plate (17) via adapter plate connecting bolts (5); the input flange (1), the first flexible member (3) and the first adapter plate (4) are connected via a fastening assembly; and the output flange (20), the second flexible member (19) and the second adapter plate (17) are connected via a fastening assembly.

7. The viscous damping vibration reduction flexible coupling according to claim 1, characterized in that: An oil injection screw hole is drilled on the outer end surface of the damping housing, and a plug (11) is placed in the oil injection screw hole.

8. The viscous damping vibration reduction flexible coupling according to claim 1, characterized in that: The outer end surface of the damping shell is provided with a heat sink.

9. The viscous damping vibration reduction flexible coupling according to claim 1, characterized in that: A boss is provided in the middle of the central shaft (7), and the outer periphery of the boss abuts against the viscous damping device.

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