CN117780810A - Overload protection device for coupler - Google Patents
Overload protection device for coupler Download PDFInfo
- Publication number
- CN117780810A CN117780810A CN202311561867.XA CN202311561867A CN117780810A CN 117780810 A CN117780810 A CN 117780810A CN 202311561867 A CN202311561867 A CN 202311561867A CN 117780810 A CN117780810 A CN 117780810A
- Authority
- CN
- China
- Prior art keywords
- connecting flange
- bearing
- flange
- overload protection
- disc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002184 metal Substances 0.000 claims abstract description 29
- 238000010008 shearing Methods 0.000 claims abstract description 20
- 230000008878 coupling Effects 0.000 claims abstract description 16
- 238000010168 coupling process Methods 0.000 claims abstract description 16
- 238000005859 coupling reaction Methods 0.000 claims abstract description 16
- 239000012528 membrane Substances 0.000 claims description 9
- 238000010894 electron beam technology Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Transmission Devices (AREA)
Abstract
The invention relates to a coupling overload protection device, which comprises a first connecting flange, wherein a shaft neck is arranged on the first connecting flange, a bearing mounting seat is arranged on the second connecting flange, and a bearing is arranged between the shaft neck and the bearing mounting seat; one end of the metal flexible component is connected with the first connecting flange by a fastener, and the other end is connected with the second connecting flange by a shear bolt. The metal flexible component realizes misalignment displacement compensation of the coupler through angular deformation: when the transmission system is overloaded, the shearing bolts shear and cut off the original torque transmission path, and the other parts of the transmission system are protected from being damaged by overload torque, and at the moment, the friction-reducing ring pad structure between the second connecting flange and the metal flexible component can avoid the friction heating problem at the break position caused by relative high-speed rotation. The invention has simple structure and small additional weight, breaks through the difficult problems of compact space and small additional mass in the field of high-rotation-speed transmission, and has great use advantages.
Description
Technical Field
The invention belongs to the technical field of couplings, and relates to a coupling overload protection device.
Background
When the flexible coupling is subjected to overlarge torque, the flexible assembly and the connecting bolt can deform and break, and if the flexible assembly and the connecting bolt are not found timely, severe internal collision and grinding and even shaft flying out can be caused, so that serious safety accidents are caused. The torque overload protection device for the coupler can meet the requirements of transmitting torque and rotary motion between the main engine and the auxiliary engine and compensating the radial, angular and axial misalignment between the main engine and the auxiliary engine under the normal working state of the coupler, and can carry out overload protection on a unit under the condition of overlarge torque under overload working conditions.
The existing overload protection device for the coupler generally adopts a shearing pin structure, a V-shaped groove shearing shaft structure, a steel ball elastic reset structure, a friction slipping structure and the like. The shearing pin structure, the V-shaped groove shearing shaft structure and the steel ball elastic reset structure are affected by factors such as structural design, production and assembly, overload protection torque sensitivity is low, overload protection of tiny torque cannot be achieved, the overload protection structure is heavy and ultrahigh rotating speed cannot be achieved, in addition, the shearing pin structure and the V-shaped groove shearing shaft structure have the problems of easiness in stress concentration, fatigue failure and the like, meanwhile, in order to prevent excessive vibration of a shaft after overload shearing out of control, a plurality of bearings are often needed to support the shaft, and when the friction slipping structure slips in overload, the friction surface is large in heating value, easy to abrade and unstable in overload torque, so that the friction device is only suitable for low-speed overload protection occasions with additional safety measures.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, solve the problems of low sensitivity, large required space and additional mass, easy fly-out of a rear shaft after clutch, large friction heat productivity and the like of the overload protection torque of the traditional coupler, and provide the overload protection device of the coupler.
In order to achieve the above purpose, the following technical scheme is adopted:
the overload protection device for the coupler comprises a first connecting flange, a second connecting flange, a metal flexible component and a bearing, wherein the metal flexible component is arranged between the first connecting flange and the second connecting flange, a shaft neck is arranged on the first connecting flange, a bearing mounting seat is arranged on the second connecting flange, the end part of the shaft neck stretches into the bearing mounting seat, and the bearing is arranged between the shaft neck and the bearing mounting seat; the metal flexible component is arranged on the outer side of the shaft neck and the bearing mounting seat in a surrounding mode, one end of the metal flexible component is connected with the first connecting flange through a fastener, and the other end of the metal flexible component is connected with the second connecting flange through a shear bolt.
Preferably, the metal flexible component comprises a first connecting disc and a second connecting disc, and a flexible membrane disc is arranged between the first connecting disc and the second connecting disc; the first connecting disc is connected with the first connecting flange by using a fastener, and the second connecting disc is connected with the second connecting flange by using a shear bolt.
Preferably, the second connecting disc and the second connecting flange are respectively provided with corresponding connecting holes, and the shear bolts are arranged in the connecting holes.
Preferably, the fastener is a connecting bolt.
Preferably, the bearing is a self-aligning ball bearing or a knuckle bearing.
Preferably, an antifriction ring pad is arranged between the second connecting disc and the second connecting flange.
Preferably, two sides of the flexible membrane disc are respectively connected with the first connecting disc and the second connecting disc by vacuum electron beam welding.
Preferably, one end of the bearing mounting seat is provided with an annular check ring.
Preferably, the middle part of the shear bolt is a stress rod, two ends of the stress rod can be respectively matched with the second connecting flange and the second connecting disc, and an annular groove is formed in the middle part of the stress rod.
Compared with the prior art, the invention has the following advantages:
the invention is scientific and reasonable, and has good three-way compensation capability and high-precision overload torque protection capability; the installation and maintenance are convenient, the friction heating problem caused by high-speed relative rotation is avoided by utilizing the design of the antifriction ring pad, and the durability of the structure is improved; the key parts of the device comprise a shear bolt, an antifriction ring pad and a joint bearing, and the three parts have high reliability, quick interchangeability and convenient maintenance; the whole structure is simple, the additional weight is small, only one bearing is needed to support the journal and the flexible component, and the bearing has great advantages under the limitation of higher space and additional mass; the shearing bolt is adopted to prevent the gear box at the output end from receiving extra torque, so that the problems of stress concentration, fatigue failure, large overload protection impact vibration and the like of the traditional overload protection technology are effectively solved, the shearing torque required by the shearing bolt is determined by the shearing neck size, the design can be carried out according to the actual overload protection requirement of the coupler, and the application range is wide.
Drawings
Fig. 1 is a schematic view of the internal structure of the present invention.
Fig. 2 is an external outline schematic of the present invention.
FIG. 3 is a schematic view of a first connection flange according to the present invention.
Fig. 4 is a schematic structural view of a second connecting flange according to the present invention.
FIG. 5 is a schematic view of the shear bolt according to the present invention.
In the figure: 1. a first connection flange; 2. a second connection flange; 3. a metallic flexible component; 4. a bearing; 5. a journal; 6. a bearing mounting seat; 7. a fastener; 8. cutting off the bolt; 9. a first connection plate; 10. a second connection pad; 11. a flexible membrane disc; 12. a connection hole; 13. an antifriction ring pad; 14. an annular retainer ring; 15; a force-bearing rod; 16. an annular groove.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
As shown in fig. 1-5, a coupling overload protection device comprises a first connecting flange 1, a second connecting flange 2, a metal flexible component 3 and a bearing 4, wherein the first connecting flange 1 and the second connecting flange 2 are respectively connected with a driven shaft and a driving shaft; a metal flexible component 3 is arranged between the first connecting flange 1 and the second connecting flange 2, and the metal flexible component 3 is used for transmitting the torque on the second connecting flange 2 to the first connecting flange 1;
the first connecting flange 1 is provided with a shaft neck 5, the second connecting flange 2 is provided with a bearing mounting seat 6, the end part of the shaft neck 5 stretches into the bearing mounting seat 6, and a bearing 4 is arranged between the shaft neck 5 and the bearing mounting seat 6; the journal 5 and the bearing mounting seat 6 relatively rotate through the bearing 4, and friction between the journal 5 and the bearing mounting seat 6 is avoided;
the metal flexible component 3 is arranged on the outer side of the shaft neck 5 and the bearing mounting seat 6 in a surrounding mode, one end of the metal flexible component 3 is connected with the first connecting flange 1 through a fastening piece 7, the other end of the metal flexible component 3 is connected with the second connecting flange 2 through a shearing bolt 8, when the metal flexible component 3 receives a maximum specified torque which can be borne by the shearing bolt 8, the shearing bolt 8 can shear off and transmit the torque, at the moment, the second connecting flange 2 continuously rotates along with the driving shaft due to the fact that the driving shaft continuously rotates, the bearing mounting seat 6 of the second connecting flange 2 can continuously rotate around the shaft neck 5 due to the existence of the bearing 4, the fact that the second connecting flange 2 does not fly out due to the disconnection of the shearing bolt 8 is guaranteed, and equipment damage and personnel injury caused by flying of the metal flexible component 3 and the shaft neck 5 connected with the shearing are avoided.
Further, the metal flexible component 3 comprises a first connecting disc 9, a second connecting disc 10 and a flexible membrane disc 11, wherein the flexible membrane disc 11 is arranged between the first connecting disc 9 and the second connecting disc 10; the first connecting disc 9 is connected with the first connecting flange 1 by using the fastening piece 7, the second connecting disc 10 is connected with the second connecting flange 2 by using the shearing bolt 8, the metal flexible assembly 3 plays a role of a flexible coupling, the first connecting flange 1 and the second connecting flange 2 are connected, torque is transmitted, and the shearing bolt 8 plays a role of torque overload protection.
Further, the second connecting disc 10 and the second connecting flange 2 are respectively provided with corresponding connecting holes 12, the shear bolts 8 are installed in the connecting holes 12, the number of the connecting holes 12 is at least 2, and the connecting holes can be adjusted according to design requirements.
Further, the fastening piece 7 is a connecting bolt, and the bolt connection is convenient for quick assembly and disassembly.
Further, the bearing 4 is a self-aligning ball bearing or a knuckle bearing.
Further, an antifriction ring pad 13 is arranged between the second connecting disc 10 and the second connecting flange 2, after the overload shear bolt 8 is sheared, friction is generated between the second connecting disc 10 and the antifriction ring pad 13, and along with the increase of friction, the antifriction ring pad 13 is worn out to be in no contact with the second connecting disc 10 in a very short time, so that vibration and heat dissipation problems caused by friction are restrained, direct friction between the second connecting disc 10 and the second connecting flange 2 is avoided, the durability of components is improved, and if the operation of a machine set is required to be restored again, the established high-speed safety overload function can be restored only by quickly replacing the shear bolt 8.
Further, the two sides of the flexible membrane disc 11 are respectively connected with the first connecting disc 9 and the second connecting disc 10 by utilizing vacuum electron beam welding, and compared with the traditional end tooth connecting technology, the vacuum electron beam welding mode has the advantages of smaller outer diameter, lighter weight, higher shape and position precision and easiness in improving the critical rotation speed of an application shaft system.
Further, an annular retainer ring 14 is arranged at one end of the bearing mounting seat 6, and the annular retainer ring 14 can play a limiting role on the bearing 4.
Further, the middle part of the shear bolt 8 is provided with a stress rod 15, two ends of the stress rod 15 can be respectively matched with the second connecting flange 2 and the second connecting disc 10, an annular groove 16 is arranged in the middle of the stress rod 15, when the shear bolt 8 is assembled, the annular groove 16 is arranged between the first connecting flange 2 and the second connecting disc 10, the diameter of a torque bearing part of the stress rod 15 is reduced by the annular groove 16, and when a coupling is overloaded, the shear bolt 8 is sheared.
Working principle: when the bearing is used, the first connecting flange 1 is connected with the driven shaft, the second connecting flange 2 is connected with the driving shaft, then the shaft neck 5 stretches into the bearing mounting seat 6, and the bearing 4 is mounted between the two; the first connecting flange 1 and the first connecting disc 9 are connected and fixed by using a fastener 7, an antifriction ring pad 13 is attached to the second connecting flange 2, and then the second connecting flange 2 and the second connecting disc 10 are fixed by using a shear bolt 8;
during normal operation, torque on the second connecting flange 2 is transmitted to the first connecting flange 1 through the metal flexible component 3 and the shear bolts 8, the metal flexible component 3 realizes misalignment displacement compensation of the coupler through angular deformation, and at the moment, the bearing 4 arranged inside the metal flexible component 3 cannot influence the angular compensation capacity of the metal flexible component 3 due to the self-aligning characteristic of the bearing 4;
when the torque on the second connecting flange 2 is overloaded and exceeds the specified value of the shear bolt 8, the shear bolt 8 shears off and does not transmit torque any more, the original torque transmission path is cut off, and other parts of the system are protected from being damaged by overload torque II; the bearing mounting seat 6 of the second connecting flange 2 can rotate continuously around the shaft neck 5 due to the existence of the bearing 4, the first connecting flange 1, the shaft neck 5, the bearing 4, the drawing mounting seat 6 and the second connecting flange 2 form a rotation axis, and rotor flying-out events caused by the disconnection of the original transmission path are avoided; meanwhile, after the shear bolts 8 are sheared, friction is generated between the second connecting disc 10 and the antifriction ring pad 13, and the antifriction ring pad 13 is worn out to be in no contact with the second connecting disc 10 in a very short time along with the increase of friction, so that vibration and heat dissipation problems caused by friction are restrained, direct friction between the second connecting disc 10 and the second connecting flange 2 is avoided, durability of parts is improved, and if the operation of a unit needs to be restored again, a set high-speed safety overload function can be restored only by quickly replacing the shear bolts 8.
It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present invention, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the invention, and are also considered to be within the scope of the invention.
Claims (9)
1. The utility model provides a shaft coupling overload protection device, includes first flange (1), second flange (2), metal flexible component (3) and bearing (4), is provided with metal flexible component (3), characterized by between first flange (1) and second flange (2): the bearing is characterized in that a shaft neck (5) is arranged on the first connecting flange (1), a bearing mounting seat (6) is arranged on the second connecting flange (2), the end part of the shaft neck (5) stretches into the bearing mounting seat (6), and a bearing (4) is arranged between the shaft neck (5) and the bearing mounting seat (6); the metal flexible component (3) is arranged on the outer side of the shaft neck (5) and the bearing mounting seat (6) in a surrounding mode, one end of the metal flexible component (3) is connected with the first connecting flange (1) through a fastener (7), and the other end of the metal flexible component is connected with the second connecting flange (2) through a shearing bolt (8).
2. The overload protection device for a coupling as claimed in claim 1, wherein: the metal flexible component (3) comprises a first connecting disc (9), a second connecting disc (10) and a flexible membrane disc (11), wherein the flexible membrane disc (11) is arranged between the first connecting disc (9) and the second connecting disc (10); the first connecting disc (9) is connected with the first connecting flange (1) by a fastener (7), and the second connecting disc (10) is connected with the second connecting flange (2) by a shear bolt (8).
3. The overload protection device for a coupling as claimed in claim 2, wherein: corresponding connecting holes (12) are respectively formed in the second connecting disc (10) and the second connecting flange (2), and the shear bolts (8) are arranged in the connecting holes (12).
4. The overload protection device for a coupling as claimed in claim 1, wherein: the fastening piece (7) is a connecting bolt.
5. The overload protection device for a coupling as claimed in claim 1, wherein: the bearing (4) is a self-aligning ball bearing or a knuckle bearing.
6. The overload protection device for a coupling as claimed in claim 2, wherein: an antifriction ring pad (13) is arranged between the second connecting disc (10) and the second connecting flange (2).
7. The overload protection device for a coupling as claimed in claim 2, wherein: the two sides of the flexible membrane disc (11) are respectively connected with the first connecting disc (9) and the second connecting disc (10) by vacuum electron beam welding.
8. The overload protection device for a coupling as claimed in claim 1, wherein: one end of the bearing mounting seat (6) is provided with an annular check ring (14).
9. The overload protection device for a coupling as claimed in claim 1, wherein: the middle part of the shear bolt (8) is provided with a stress rod (15), two ends of the stress rod (15) can be respectively matched with the second connecting flange (2) and the second connecting disc (10), and the middle part of the stress rod (15) is provided with an annular groove (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311561867.XA CN117780810A (en) | 2023-11-21 | 2023-11-21 | Overload protection device for coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311561867.XA CN117780810A (en) | 2023-11-21 | 2023-11-21 | Overload protection device for coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117780810A true CN117780810A (en) | 2024-03-29 |
Family
ID=90388112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311561867.XA Pending CN117780810A (en) | 2023-11-21 | 2023-11-21 | Overload protection device for coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117780810A (en) |
-
2023
- 2023-11-21 CN CN202311561867.XA patent/CN117780810A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4743216A (en) | Rotary safety coupling for transmitting large torques | |
| CN102822519A (en) | Wind turbine | |
| CN111288089B (en) | Wind-electricity coupling | |
| CN109236880B (en) | Torque limiting type coupler | |
| CN111458134B (en) | Rotor test switching mechanism | |
| CN201763846U (en) | Ball cage coupling with overload protection device | |
| CN117780810A (en) | Overload protection device for coupler | |
| CN106122076A (en) | A kind of special balls roof construction end face tooth type flexible coupling | |
| US3246483A (en) | Coupling | |
| JP2768827B2 (en) | Apparatus and method for correcting dynamic shortening effect in pitch control system for rotary wing aircraft | |
| CN200968363Y (en) | Overload protection device suitable for high speed rotating equipment | |
| CN109915496B (en) | SWC-BH type integral fork head cross shaft type telescopic welding type universal coupling | |
| CN115163684B (en) | Membrane disc coupler with axial distance compensation function and auxiliary support | |
| CN113623131B (en) | Wind generating set | |
| CN102032283A (en) | Ball-cage type universal coupling and full-hydraulic grader | |
| CN219932770U (en) | Ultrahigh-speed overload protection film disc flexible coupling | |
| CN110332245B (en) | Cross universal coupling | |
| CN204391972U (en) | Integrated electric motor-car power syndeton | |
| CN215567458U (en) | Heavy flexible diaphragm coupling | |
| CN2073957U (en) | Safety coupling | |
| CN116576202A (en) | Ultrahigh-speed overload protection film disc flexible coupling | |
| CN219954011U (en) | Film disc coupling | |
| CN104196956A (en) | Flexible connection device of engine and transmission system | |
| CN220227752U (en) | Transmission system of cement grinding gear box | |
| CN216078028U (en) | Elastic diaphragm safety coupling with safety pin |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |