CN212785135U - Torque-limiting permanent magnet coupling with brake wheel - Google Patents
Torque-limiting permanent magnet coupling with brake wheel Download PDFInfo
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- CN212785135U CN212785135U CN202021929642.7U CN202021929642U CN212785135U CN 212785135 U CN212785135 U CN 212785135U CN 202021929642 U CN202021929642 U CN 202021929642U CN 212785135 U CN212785135 U CN 212785135U
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Abstract
The utility model relates to the field of couplings, in particular to a torque-limiting permanent magnet coupling with a brake wheel, which comprises a conductor rotor part and a permanent magnet rotor part, wherein the conductor rotor part comprises a large steel disc and a small steel disc; the permanent magnet rotor component comprises a shaft sleeve and a permanent magnet disc; the shaft sleeve is connected with a brake wheel; two conductor discs are arranged in the area between the large steel disc and the small steel disc; the permanent magnet discs are arranged in the region between the two conductor discs. The utility model discloses a limit square permanent magnet coupling of band brake wheel at first adds on the shaft coupling and establishes the braked wheel, can solve traditional shaft coupling and need add the problem of braked wheel, in addition, the utility model discloses because only set up a permanent magnetism dish, output shaft axial distance is shorter, can reserve braked wheel mounted position, simultaneously because axial length is short, very big avoided the problem that the peripheral hardware braked wheel brought the vibration easily.
Description
Technical Field
The utility model relates to a shaft coupling field is a limit square permanent magnet coupling of band brake wheel particularly.
Background
The permanent magnet coupling realizes non-contact torque transmission through interaction between a permanent magnetic field generated by a permanent magnet and an induction magnetic field generated by a magnetic line of force cut by a conductor disc, can effectively isolate vibration, is convenient to install, has a soft start effect, and is popularized and applied in the field of industrial transmission.
The torque-limiting permanent magnet coupling is an extended functional product of the permanent magnet coupling, when a load is overloaded or locked, the repulsive force between the permanent magnet disc and the conductor disc is larger than the attractive force, the permanent magnet disc and the conductor disc relatively keep away from sliding, so that an air gap is enlarged, torque transmission is cut off, and the purpose of protecting a power machine and load equipment is achieved.
In the prior art, a torque-limiting permanent magnet coupler generally comprises a conductor rotor component and a permanent magnet rotor component, wherein two groups of permanent magnet discs of the permanent magnet rotor component are arranged on an output shaft back to back and can axially slide on the output shaft, a spring swing arm component is arranged on the back of each permanent magnet disc, and at the moment of starting, the permanent magnet discs can automatically slide in the direction far away from the conductor disc due to repulsive force, but because the permanent magnet discs are static, a spring arm component is positioned at an axial position under the action of a spring and can be propped against the permanent magnet discs, only the air gap is allowed to be increased by a certain value. After the starting is finished, the spring arms are in a high-rotating-speed state, and under the action of centrifugal force, overcome spring force and are thrown away and attached to the back of the permanent magnetic disk.
In the operation process, once overload or locked rotation occurs, the permanent magnet disc automatically slides in the direction away from the conductor disc along the axial direction under the action of repulsive force, so that the air gap is maximum, the transmission torque is reduced to the minimum, the motor idles, the load stops, and the motor and load equipment are protected.
After the overload condition disappears, the permanent magnetic disk automatically resets. Because two groups of permanent magnetic disks are used, the axial length is long, and if a brake wheel is installed, the axial length is longer, so that the cantilever load acting on a load shaft is large, the stress is worsened, and the problems of vibration, shaft breakage and the like are easily caused.
In order to solve the problems, in the prior art, two bearings are additionally arranged between a conductor rotor part and a permanent magnet rotor part of a torque-limiting permanent magnet coupler to form a whole, the whole is installed on a motor shaft, a half coupler is installed on an output shaft of the permanent magnet rotor part and is connected with the half coupler which is installed on a load shaft and is provided with a brake wheel, and therefore the problems that the axial length is long, the cantilever load is large, and vibration and shaft breakage are easily caused due to the fact that the brake wheel is installed on the permanent magnet rotor part are solved.
But also brings the problems of large cantilever load of a motor shaft, as fussy and high requirement for centering as using a coupler or a hydraulic coupler, and the problems of maintenance and periodic replacement caused by using a bearing, so that the advantages of the permanent magnet coupler in the aspects of low centering requirement, vibration reduction, maintenance-free property and the like are lost.
These problems make the application of the product have certain limitations, which is not favorable for the mass popularization and application of the product.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a limit square permanent magnet coupling of area braked wheel.
In order to realize the purpose, the utility model discloses a technical scheme be:
a torque-limiting permanent magnet coupler with a brake wheel comprises a conductor rotor part and a permanent magnet rotor part, wherein the conductor rotor part comprises a large steel disc and a small steel disc; the permanent magnet rotor component comprises a shaft sleeve and a permanent magnet disc; the shaft sleeve is connected with a brake wheel; two conductor discs are arranged in the area between the large steel disc and the small steel disc; the permanent magnet discs are arranged in the region between the two conductor discs.
Only one permanent magnetic disk is arranged between the two conductor disks.
The two conductor discs are connected through a connecting mechanism; the connecting mechanism comprises a pin shaft connected to the conductor disc, and the conductor disc is sleeved on the pin shaft; and the pin shaft is provided with an adjusting mechanism for adjusting an air gap between the conductor disc and the permanent magnet disc.
The adjusting mechanism comprises a rotating nut sleeved on the pin shaft.
The adjusting mechanism further comprises a flat nut arranged on the pin shaft, the flat nut is matched with the rotating nut for use, and the flat nut is arranged on one side, far away from the conductor disc, of the rotating nut.
And a compression spring for returning the conductor disc is arranged at the end part of the pin shaft.
The pin shaft penetrates through the two conductor discs, two ends of the pin shaft are connected with the large steel disc and the small steel disc respectively, and the large steel disc and the small steel disc are provided with inserting grooves for inserting the pin shaft.
The pin shaft comprises an intermediate shaft, two ends of the intermediate shaft are respectively connected with the large steel disc and the small steel disc through connecting shafts, and the diameter of the intermediate shaft is larger than that of the connecting shafts.
The two conductor discs are connected through a plurality of connecting mechanisms, and the connecting mechanisms are uniformly distributed along the circumference of the conductor disc; the large steel disc is connected with the small steel disc through a plurality of connecting columns; the connecting columns are uniformly distributed at intervals.
The utility model has the advantages that:
the utility model discloses a limit square permanent magnet coupling of band brake wheel at first adds on the shaft coupling and establishes the braked wheel, can solve traditional shaft coupling and need add the problem of braked wheel, in addition, the utility model discloses because only set up a permanent magnetism dish, output shaft axial distance is shorter, can reserve braked wheel mounted position, simultaneously because axial length is short, very big avoided the problem that the peripheral hardware braked wheel brought the vibration easily.
Drawings
The contents of the various figures of the specification and the labels in the figures are briefly described as follows:
fig. 1 is a structural sectional view of the present invention.
Fig. 2 is a cross-sectional view of the structure of the middle pin shaft of the present invention.
The labels in the above figures are:
1-a conductor rotor component; 101-a connector; 102-large steel disc; 103-conductor disc; 104-a compression spring; 105-a nut; 106-flat nut; 107-pin shaft; 108-connecting column; 109-small steel discs;
2-a permanent magnet rotor component; 201-permanent magnetic disk; 202-shaft sleeve; 203-brake wheel.
Detailed Description
The following description of the preferred embodiments of the present invention will be made in further detail with reference to the accompanying drawings.
A torque-limiting permanent magnet coupling with a brake wheel 203 comprises a conductor rotor part 1 and a permanent magnet rotor part 2, wherein the conductor rotor part 1 comprises a large steel disc 102 and a small steel disc 109; the permanent magnet rotor part 2 comprises a shaft sleeve 202 and a permanent magnet disc 201; a brake wheel 203 is connected to the shaft sleeve 202; two conductor discs 103 are arranged in the area between the large steel disc and the small steel disc 109; the permanent magnet discs 201 are arranged in the area between the two conductor discs 103; the utility model discloses a torque-limiting permanent magnet coupling with a brake wheel 203, in the utility model, a permanent magnet rotor part 2 is fixed on a load input shaft by a shaft sleeve 202; install permanent magnetism dish 201 and braked wheel 203 on the axle sleeve 202, based on such setting, make the utility model discloses a shaft coupling self has braked wheel 203, and such setting can solve traditional shaft coupling and need add the problem of braked wheel 203 outward.
Preferably, only one permanent magnetic disk 201 is arranged between the two conductor disks 103 in the present invention; the utility model discloses because only set up a permanent magnetism dish 201, output shaft axial distance is shorter, can reserve braked wheel 203 mounted position, because axial length is short simultaneously, very big has avoided the problem that the peripheral hardware braked wheel 203 is easy to bring the vibration; additionally, the utility model discloses a limit square permanent magnet shaft coupling only adopts a set of permanent magnetism dish 201, has saved valuable tombarthite resource.
Preferably, in the present invention, the two conductor discs 103 are connected by a connection mechanism; the connecting mechanism comprises a pin shaft 107 connected to the conductor disc 103, and the conductor disc 103 is sleeved on the pin shaft 107; conductor disc 103 can slide back and forth on pin 107; the pin shaft 107 is provided with an adjusting mechanism for adjusting an air gap between the conductor disc 103 and the permanent magnet disc 201; the utility model can adjust the air gap between the conductor disc 103 and the permanent magnet disc 201 through the setting of the adjusting mechanism, and can be adjusted according to the requirement to meet the use working conditions of different devices; the adjusting mechanism can be various, and theoretically, the adjusting mechanism can be applied to the utility model as long as the size of the air gap between the conductor disc 103 and the permanent magnet disc 201 can be adjusted; in order to ensure the simplicity of the solution and avoid the interference of the parts, the adjusting mechanism of the present invention includes a rotating nut 105 sleeved on the pin 107; the arrangement of the rotating nut 105 can change the size of the air gap between the conductor disc 103 and the permanent magnet disc 201, at this time, the rotating nut 105 plays a role of limiting and positioning, and meanwhile, the end part of the pin shaft 107 is provided with a compression spring 104 for returning the conductor disc 103; the compression spring 104 is provided for use in conjunction with a swivel nut 105 in order to achieve the return of the conductor disc 103.
Preferably, the adjusting mechanism of the present invention further includes a flat nut 106 disposed on the pin 107, the flat nut 106 is used in cooperation with the rotating nut 105, and the flat nut 106 is disposed on a side of the rotating nut 105 away from the conductor disc 103; the flat nut 106 functions as a secondary lock to prevent the swivel nut 105 from wobbling.
Preferably, in the present invention, the pin 107 penetrates through the two conductor discs 103, and the two ends of the pin 107 are respectively connected to the large steel disc 102 and the small steel disc 109, so that the pin 107 can be conveniently connected, and the pin 107 also plays a role of a connecting rod, so that the large steel disc 102 and the small steel disc 109 have a secondary connection function, and the large steel disc 102 and the small steel disc 109 are provided with inserting grooves for inserting the pin 107; the inserting sinking groove plays a good role in limiting and positioning, and facilitates the assembly of the pin shaft 107.
Preferably, in the present invention, the pin 107 includes a middle shaft 1071, two ends of the middle shaft 1071 are respectively connected to the large steel plate 102 and the small steel plate 109 through a connecting shaft 1072, and a diameter of the middle shaft 1071 is greater than a diameter of the connecting shaft 1072; through such setting for the junction of jackshaft 1071 and connecting axle 1072 has a halfpace structure, can make round pin axle 107 self have a limiting displacement, when not setting up swivel nut 105 and flat nut 106, also can not cause two conductor dish 103 excessive problems of moving inwards.
Preferably, in the present invention, two conductor discs 103 are connected by a plurality of connection mechanisms, and each of the connection mechanisms is uniformly distributed along the circumference of the conductor disc 103; the connecting mechanism mainly comprises a pin shaft 107, the pin shaft 107 penetrates through the two conductor discs 103, the pin shaft 107 provides a place for connecting the two conductor discs 103, the arrangement of a subsequent adjusting mechanism is convenient, and meanwhile, in order to ensure the strength of the whole structure, the utility model discloses a plurality of pin shafts 107 are arranged on the two conductor discs 103, and the pin shafts 107 are arranged along the edges of the conductor discs 103, and the pin shafts 107 are distributed along the circumference of the conductor discs 103; similarly, in the present invention, the large steel plate 102 is connected to the small steel plate 109 through a plurality of connecting posts 108; the connecting columns 108 are uniformly distributed at intervals; the arrangement of the connecting column 108 enables the large steel disc 102 and the small steel disc 109 to have better connection strength, and simultaneously better ensures the stability of the whole structure of the whole coupler.
The utility model discloses a concrete structure and concrete running state as follows:
a torque-limiting permanent magnet coupling with a brake wheel 203 comprises a conductor rotor part 1 coaxially mounted on an output shaft of a power machine and a permanent magnet rotor part 2 mounted on a load input shaft, wherein the conductor rotor part 1 is fixed on the output shaft of the power machine through a connecting part 101, the permanent magnet rotor part 2 is fixed on the load input shaft through a shaft sleeve 202, a group of permanent magnet discs 201 and the brake wheel 203 are mounted on the shaft sleeve 202, a large steel disc 102, a small steel disc 109 and a connecting column 108 of the conductor rotor part 1 form an outer frame, a plurality of pin shafts 107 are mounted on the inner side of the outer frame, and two groups of compression springs 104, conductor discs 103, nuts and flat nuts 106 are symmetrically and sequentially mounted on the pin shafts;
In general, the operation of a torque-limiting permanent magnet coupling is as follows:
in a static state, the air gap between the conductor disc 103 and the permanent magnet disc 201 is minimum under the action of the compression spring 104 and the suction force of the permanent magnet disc 201.
When the motor is started, the two groups of conductor discs 103 slide away from the permanent magnet disc 201 under the action of repulsion force until the compression spring 104 is completely compressed, and at the moment, the torque transmission capacity is reduced due to the increase of the air gap, so that the no-load starting function of the motor is realized.
After the motor is started, under the action of the suction force of the compression spring 104 and the permanent magnet disc 201, the conductor disc 103 slowly returns to the original position, the load is gradually accelerated until the air gap is recovered to the minimum, the load is started, and the soft start function of the load is realized.
When overload or locked rotor occurs, the two groups of conductor discs 103 slide away from the permanent magnet disc 201 under the action of repulsion force until the compression spring 104 is completely compressed, at the moment, the torque transmission capacity is reduced due to the increase of the air gap, the load stops, the motor and the load equipment are protected, and the torque limiting protection function is realized.
In the case of adjusting the air gap:
loosening the flat nut 106, rotating the nut 105 to enable the conductor disc 103 to slide outwards until the air gap between the conductor disc 103 and the permanent magnet disc 201 is increased to a set value, and then tightly combining the flat nut 106 and the nut; because the size of the air gap during operation is related to the torque transmission capacity, the torque transmission capacity can be changed by adjusting the air gap, so that the operation condition of the equipment can be better matched.
Obviously the specific implementation of the present invention is not limited by the above-mentioned manner, and various insubstantial improvements made by the method concept and technical solution of the present invention are all within the protection scope of the present invention.
Claims (9)
1. A torque-limiting permanent magnet coupler with a brake wheel is characterized by comprising a conductor rotor part and a permanent magnet rotor part, wherein the conductor rotor part comprises a large steel disc and a small steel disc; the permanent magnet rotor component comprises a shaft sleeve and a permanent magnet disc; the shaft sleeve is connected with a brake wheel; two conductor discs are arranged in the area between the large steel disc and the small steel disc; the permanent magnet discs are arranged in the region between the two conductor discs.
2. The torque-limiting permanent magnet coupling with a brake wheel of claim 1, wherein only one permanent magnet disc is disposed between two conductor discs.
3. The torque-limiting permanent magnet coupling with the brake wheel according to claim 1, wherein the two conductor discs are connected through a connecting mechanism; the connecting mechanism comprises a pin shaft connected to the conductor disc, and the conductor disc is sleeved on the pin shaft; and the pin shaft is provided with an adjusting mechanism for adjusting an air gap between the conductor disc and the permanent magnet disc.
4. The torque-limiting permanent magnet coupling with the brake wheel of claim 3, wherein the adjusting mechanism comprises a rotating nut sleeved on a pin shaft.
5. The torque-limiting permanent magnet coupling with the brake wheel according to claim 4, wherein the adjusting mechanism further comprises a flat nut arranged on the pin shaft, the flat nut is matched with the rotating nut for use, and the flat nut is arranged on one side, away from the conductor disc, of the rotating nut.
6. A torque-limiting permanent magnet coupling with a brake pulley according to any one of claims 3-5, wherein the end of the pin is provided with a compression spring for returning the conductor disc.
7. The torque-limiting permanent magnet coupling with the brake wheel as claimed in claim 3, wherein the pin shaft penetrates through the two conductor discs, and two ends of the pin shaft are respectively connected with the large steel disc and the small steel disc, and the large steel disc and the small steel disc are provided with inserting grooves for inserting the pin shaft.
8. The torque-limiting permanent magnet coupling with the brake wheel as claimed in claim 3, wherein the pin shaft comprises an intermediate shaft, two ends of the intermediate shaft are respectively connected with the large steel disc and the small steel disc through connecting shafts, and the diameter of the intermediate shaft is larger than that of the connecting shafts.
9. The torque-limiting permanent magnet coupling with a brake wheel of claim 3, wherein two conductor discs are connected by a plurality of connection mechanisms, each connection mechanism being evenly distributed along the circumference of the conductor disc; the large steel disc is connected with the small steel disc through a plurality of connecting columns; the connecting columns are uniformly distributed at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021929642.7U CN212785135U (en) | 2020-09-07 | 2020-09-07 | Torque-limiting permanent magnet coupling with brake wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021929642.7U CN212785135U (en) | 2020-09-07 | 2020-09-07 | Torque-limiting permanent magnet coupling with brake wheel |
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| Publication Number | Publication Date |
|---|---|
| CN212785135U true CN212785135U (en) | 2021-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021929642.7U Active CN212785135U (en) | 2020-09-07 | 2020-09-07 | Torque-limiting permanent magnet coupling with brake wheel |
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| CN (1) | CN212785135U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113206585A (en) * | 2021-05-14 | 2021-08-03 | 芜湖锦程永磁技术有限公司 | Integrated torque-limiting permanent magnet coupling and assembling method thereof |
| CN114157113A (en) * | 2021-12-08 | 2022-03-08 | 宿迁学院 | Permanent magnet synchronous motor with high power density |
-
2020
- 2020-09-07 CN CN202021929642.7U patent/CN212785135U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113206585A (en) * | 2021-05-14 | 2021-08-03 | 芜湖锦程永磁技术有限公司 | Integrated torque-limiting permanent magnet coupling and assembling method thereof |
| CN114157113A (en) * | 2021-12-08 | 2022-03-08 | 宿迁学院 | Permanent magnet synchronous motor with high power density |
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