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CN-121993506-A - Film disc flexible coupling

CN121993506ACN 121993506 ACN121993506 ACN 121993506ACN-121993506-A

Abstract

The invention relates to a membrane disc flexible coupler, and relates to the field of couplers. According to the technical scheme, the inner and outer tooth meshing pairs with matched modulus and pressure angles are additionally arranged on the membrane disc and the guard plate, so that an efficient emergency torque transmission structure is constructed, when the coupler works normally, meshing interference of the inner and outer teeth can be effectively avoided by virtue of reserved transmission gaps, the flexibility compensation performance of the membrane disc is not affected, and once the membrane disc is damaged, the inner and outer teeth can be meshed quickly, so that a temporary torque transmission path is formed. Under the condition, the operation limitation of the traditional coupling is broken, torque can be continuously transmitted after the membrane disc fails, precious emergency shutdown or overhaul time is striven for equipment such as a large-sized compressor, a generator set and the like, production interruption and safety accidents caused by sudden shutdown of the set are fundamentally avoided, and the operation reliability of related equipment is remarkably improved.

Inventors

  • CHEN KE
  • YANG WENBO
  • BIAN LINGYAN

Assignees

  • 无锡创明传动工程有限公司

Dates

Publication Date
20260508
Application Date
20260316

Claims (10)

  1. 1. A membrane disc flexible coupling comprising: the first membrane disc assembly is connected between the driving half-coupling (1) and the first end of the interval shaft (8), and comprises a first membrane disc (3) and a first guard plate (4), wherein the first membrane disc (3) is clamped between the driving half-coupling (1) and the first guard plate (4), a flange structure with external teeth is arranged at one end, close to the first guard plate (4), of the first guard plate (3), a flange structure with internal teeth is arranged at one end, close to the first membrane disc (3), of the first guard plate (4), and transmission gaps are reserved after the external teeth of the first membrane disc (3) are matched with the internal teeth of the first guard plate (4) and are assembled; The second membrane disc assembly is connected between the second end of the interval shaft (8) and the driven half-coupling (15) and comprises a second membrane disc (13) and a second guard plate (12), the second membrane disc (13) is clamped between the driven half-coupling (15) and the second guard plate (12), one end, close to the second guard plate (12), of the second membrane disc (13) is provided with a flange structure with external teeth, one end, close to the second membrane disc (13), of the second guard plate (12) is provided with a flange structure with internal teeth, external teeth of the second membrane disc (13) are matched with the internal teeth of the second guard plate (12), and a transmission gap is reserved after the external teeth and the internal teeth of the second guard plate (12) are assembled; The external teeth of the first membrane disc (3) are meshed with the internal teeth of the first guard plate (4), and the external teeth of the second membrane disc (13) are meshed with the internal teeth of the second guard plate (12) when the corresponding membrane disc is damaged, so that torque transmission of the coupler is maintained.
  2. 2. The membrane disc flexible coupling according to claim 1, characterized in that the active half-coupling (1), the first membrane disc (3) and the first guard plate (4) are locked and fixed through a first transmission assembly, and the first membrane disc (3) and the first end of the spacer shaft (8) are locked and fixed through a second transmission assembly.
  3. 3. The membrane disc flexible coupling according to claim 2, wherein the first transmission assembly comprises at least one group of first transmission bolts (2) and first nuts (5), and the first transmission bolts (2) sequentially penetrate through the active half-coupling (1), the first membrane disc (3) and the first guard plate (4) and then are in threaded locking with the first nuts (5) so as to realize synchronous transmission connection of the three; The second transmission assembly comprises at least one group of second transmission bolts (7) and second nuts (6), and the second transmission bolts (7) sequentially penetrate through the first membrane disc (3) and the first end of the interval shaft (8) and then are locked with the second nuts (6) in a threaded manner so as to realize synchronous transmission connection of the first membrane disc (3) and the interval shaft (8).
  4. 4. The membrane disc flexible coupling according to claim 1, characterized in that the driven half-coupling (15), the second membrane disc (13) and the second guard plate (12) are locked and fixed by a fourth transmission assembly, and the second membrane disc (13) and the second end of the spacer shaft (8) are locked and fixed by a third transmission assembly.
  5. 5. The membrane disc flexible coupling according to claim 4, wherein the fourth transmission assembly comprises at least one group of fourth transmission bolts (14) and fourth nuts (11), and the fourth transmission bolts (14) sequentially penetrate through the driven half-coupling (15), the second membrane disc (13) and the second guard plate (12) and then are in threaded locking with the fourth nuts (11) so as to realize synchronous transmission connection of the three; The third transmission assembly comprises at least one group of third transmission bolts (9) and third nuts (10), and the third transmission bolts (9) sequentially penetrate through the second membrane disc (13) and the second end of the interval shaft (8) and then are locked with the third nuts (10) in a threaded mode so as to realize synchronous transmission connection of the second membrane disc (13) and the interval shaft (8).
  6. 6. The membrane disc flexible coupling according to claim 1, characterized in that the first membrane disc (3) and the second membrane disc (13) are both U-shaped structures, a first side of the U-shaped structures is a membrane disc profile for compensating axial, radial and angular deviations, and a second side of the U-shaped structures is a flange structure with external teeth.
  7. 7. The membrane disc flexible coupling according to claim 1, wherein the transmission gap is used for avoiding meshing interference between external teeth of the first membrane disc (3) and internal teeth of the first guard plate (4) and external teeth of the second membrane disc (13) and internal teeth of the second guard plate (12) when the first membrane disc (3) and the second membrane disc (13) are in normal operation.
  8. 8. The membrane disc flexible coupling according to claim 1, characterized in that the modulus, pressure angle of the outer teeth of the first membrane disc (3) coincide with the modulus, pressure angle of the inner teeth of the first guard plate (4); The modulus and pressure angle of the external teeth of the second membrane disc (13) are identical to those of the internal teeth of the second guard plate (12).
  9. 9. A membrane disc flexible coupling according to claim 1, characterized in that when both the first membrane disc (3) and the second membrane disc (13) are in normal operation, the torque transmission path of the membrane disc flexible coupling is: the driving half unit (1), the first membrane disc (3), the interval shaft (8), the second membrane disc (13) and the driven half unit (15).
  10. 10. A membrane disc flexible coupling according to claim 1, characterized in that: when the first membrane disc (3) is damaged, the inner teeth of the first guard plate (4) are meshed with the outer teeth of the first membrane disc (3), and the torque transmission path of the membrane disc flexible coupler is as follows: The driving half unit (1), the first guard plate (4), the external teeth of the first membrane disc (3) and the internal tooth meshing pair of the first guard plate (4), the spacing shaft (8), the second membrane disc (13) and the driven half unit (15); When the second membrane disc (13) is damaged, the inner teeth of the second guard plate (12) are meshed with the outer teeth of the second membrane disc (13), and the torque transmission path of the membrane disc flexible coupling is as follows: The driving half unit (1), the first membrane disc (3), the interval shaft (8), the external teeth of the second membrane disc (13) and the internal tooth meshing pair of the second guard plate (12), the second guard plate (12) and the driven half unit (15).

Description

Film disc flexible coupling Technical Field The invention relates to the technical field of couplings, in particular to a membrane disc flexible coupling. Background In large compressors, pumps, generator sets, marine propulsion systems and other devices, flexible couplings are the components that achieve power transfer, and their operational stability directly determines the safety performance and operational reliability of the set. The device has special and severe requirements on the flexible coupling, namely when a core flexible part (such as a film disc) of the coupling is damaged, the coupling needs to have the capacity of temporarily maintaining torque transmission so as to avoid production interruption, equipment damage and even safety accidents caused by sudden shutdown of the unit, and ensure that the unit can have enough time for emergency treatment. However, the conventional flexible coupling with a membrane disc has a plurality of defects generally, an emergency torque transmission structure is not arranged, and once the membrane disc is damaged, the torque transmission is immediately interrupted, so that the requirements of related equipment on safe operation cannot be met. In the prior art, although a part of membrane disc couplings attempt to improve structural stability by additionally arranging parts such as a guard plate, a transmission structure capable of being in emergency engagement is not designed between a membrane disc and the guard plate, and the problem of torque transmission interruption after membrane disc damage cannot be solved. Even if a small amount of improvement schemes try to optimize the structure, the meshing fit between the membrane disc and the guard plate is not formed, and emergency torque transmission can not be realized rapidly when the membrane disc fails, so that related equipment still needs to be forced to stop when the membrane disc is damaged, not only is serious production loss caused, but also additional potential safety hazards can be caused due to emergency conditions in the stop process. Disclosure of Invention The invention aims to provide a membrane disc flexible coupling which solves the problems in the prior art. In order to achieve the above purpose, the invention adopts the following technical scheme: A membrane disc flexible coupling comprising: The first membrane disc assembly is connected between the driving half-coupling and the first end of the interval shaft and comprises a first membrane disc and a first guard plate, the first membrane disc is clamped between the driving half-coupling and the first guard plate, a flange structure with external teeth is arranged at one end, close to the first guard plate, of the first membrane disc, a flange structure with internal teeth is arranged at one end, close to the first membrane disc, of the first guard plate, and the external teeth of the first membrane disc are matched with the internal teeth of the first guard plate and a transmission gap is reserved after the external teeth and the internal teeth of the first guard plate are assembled; The second membrane disc assembly is connected between the second end of the interval shaft and the driven half-coupling and comprises a second membrane disc and a second guard plate, the second membrane disc is clamped and arranged between the driven half-coupling and the second guard plate, one end, close to the second guard plate, of the second membrane disc is provided with a flange structure with external teeth, one end, close to the second membrane disc, of the second guard plate is provided with a flange structure with internal teeth, the external teeth of the second membrane disc are matched with the internal teeth of the second guard plate, and a transmission gap is reserved after the external teeth and the internal teeth of the second guard plate are assembled; The external teeth of the first membrane disc are meshed with the internal teeth of the first guard plate, and the external teeth of the second membrane disc are meshed with the internal teeth of the second guard plate when the corresponding membrane disc is damaged, so that torque transmission of the coupler is maintained. In some embodiments, the driving half unit, the first membrane disc and the first guard plate are locked and fixed through a first transmission assembly, and the first membrane disc and the first end of the interval shaft are locked and fixed through a second transmission assembly. In some embodiments, the first transmission assembly comprises at least one group of first transmission bolts and first nuts, and the first transmission bolts sequentially penetrate through the active half-link, the first membrane disc and the first guard plate and then are locked with the first nuts through threads so as to realize synchronous transmission connection of the three; The second transmission assembly comprises at least one group of second transmission bolts and second nuts, and the se