CN210608889U - Distance limiting type permanent magnet coupler with buffering function - Google Patents
Distance limiting type permanent magnet coupler with buffering function Download PDFInfo
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- CN210608889U CN210608889U CN201922245313.4U CN201922245313U CN210608889U CN 210608889 U CN210608889 U CN 210608889U CN 201922245313 U CN201922245313 U CN 201922245313U CN 210608889 U CN210608889 U CN 210608889U
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Abstract
The utility model discloses a range limit type permanent magnet coupler with buffer function, including permanent magnet rotor subassembly and conductor rotor subassembly, be connected with first flange on the motor shaft, epaxial second flange that is connected with in load, first flange and second flange are fixed respectively epaxially at motor shaft and load through the cover that expands, the one end that is close to the load axle at first flange is connected with the square shaft, be connected with permanent magnet rotor subassembly on the square shaft, be connected with the conductor rotor subassembly on the second flange, be equipped with the circular arc boss that is used for reducing friction in square shaft and permanent magnet rotor subassembly junction, be equipped with first shock insulation pad at circular arc boss upper surface. This device is simple and practical, can play the effect that the shock attenuation fell and assault in the motor working process, increase of service life improves work efficiency.
Description
Technical Field
The utility model relates to a transmission's overload protection device, specific limit for distance type permanent magnet coupler with buffer function that says so.
Background
In current mechanical transmission, the hookup mode between motor shaft and the load axle adopts the flexibility mostly to allow great deviation, reduce vibration transmission to a certain extent, nevertheless because the clearance between permanent magnet rotor subassembly and the conductor rotor subassembly is invariable, when the too big emergence of load hinders, can cause the power increase of hindrance to the motor, serious probably causes the motor to damage, also causes the harm to the transmission equipment of transmission moment of torsion simultaneously, this problem can't effectually obtain improving and solving always.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that, to the shortcoming of above prior art, a range-limiting permanent magnet coupler with buffer function is proposed, including permanent magnet rotor subassembly and conductor rotor subassembly, be connected with first flange on the motor shaft, be connected with the second flange on the load axle, first flange and second flange are fixed respectively on motor shaft and load axle through the cover that expands, are connected with the square shaft at the one end that first flange is close to the load axle, are connected with the permanent magnet rotor subassembly on the square shaft, are connected with the conductor rotor subassembly on the second flange, are equipped with the circular arc boss that is used for reducing friction in the square shaft and permanent magnet rotor subassembly junction, are equipped with first shock insulation pad on circular arc boss upper surface;
the permanent magnet rotor assembly comprises a first magnetic seat and a second magnetic seat which are symmetrically arranged, wherein magnets are respectively embedded in the opposite surfaces of the first magnetic seat and the second magnetic seat, the magnets are respectively fixed in the first magnetic seat and the second magnetic seat through a first cover plate and a second cover plate, a spring seat is arranged on the surface, far away from the magnets, of the first cover plate, a rotating shaft is arranged on the spring seat, a torsion spring is sleeved on the rotating shaft, one end of the torsion spring is connected to the spring seat, the other end of the torsion spring is connected with a bolt, and the bolt is in threaded connection with a screw for limiting;
when the coupler is static, the torsion spring is not extruded, the bolt is positioned at a first station of a horizontal position, and when the coupler rotates, the torsion spring is extruded due to the action of centrifugal force, and the bolt rotates outwards;
the conductor rotor assembly comprises a first conductor disc and a second conductor disc which are respectively arranged on the opposite sides of the first magnetic seat and the second magnetic seat, the first conductor disc and the second conductor disc are connected through a connecting rod, induction conductors are respectively arranged on the opposite sides of the first conductor disc and the second conductor disc, gaps are respectively reserved between the induction conductors and the first magnetic seat and the second magnetic seat, and heat dissipation copper sheets for cooling are respectively arranged on the opposite sides of the first conductor disc and the second conductor disc;
the size of a gap between the permanent magnet rotor assembly and the conductor rotor assembly can be changed by the first magnetic seat and the second magnetic seat sliding on the square shaft along the axial direction;
the screws may be positionally adjusted on the bolts to adjust the static air gap and the minimum air gap between the permanent magnet rotor assembly and the conductor rotor assembly.
In the technical scheme, the permanent magnet rotor assembly is fixed on the output shaft of the motor, the conductor rotor assembly is fixed on the load shaft, when the coupler is static, the torsion spring is not extruded, the bolt is positioned at a first station of a horizontal position, at the moment, the induction conductor and the first magnetic seat and the second magnetic seat respectively form a minimum gap, and the size of the minimum gap can be adjusted through the screw; when the motor is started, the rotating speed of the coupler is low and is lower than a certain rotating speed w1, due to the action of the initial torque of the torsion spring, the bolt is positioned at the first station of the horizontal position, the induction conductor and the first magnetic seat and the second magnetic seat are respectively increased to the positions where the first magnetic seat and the second magnetic seat are in contact with the bolt, and the torque is slightly lower than that of the minimum air gap at the moment, so that the light-load starting effect is achieved; when the coupler rotates to a certain rotating speed w1, the torque spring is extruded due to the action of centrifugal force, the bolt rotates outwards, the gap between the induction conductor and the first magnetic seat and the gap between the induction conductor and the second magnetic seat can change according to the overload condition of the load, the motor outputs rated load when the gap is minimum, the load gradually decreases when the gap gradually increases, the motor outputs rated load not higher than 2% when the gap is maximum, the variable gap can automatically change along with the working state and the overload state of the motor, the vibration of the motor and the load can be reduced and isolated through the non-contact transmission of the induction rotor and the permanent magnet rotor, the variable gap can automatically change along with the change of the load, the coupler can timely change the output of the coupler by adjusting the variable gap when the motor encounters overlarge load and large impact load in the working process, and the coupler can always work in a normal load state, the motor is prevented from being damaged by overcurrent due to overload and impact load, the arc boss on the square shaft and the first shock insulation pad effectively play roles in reducing impact and friction, damage to equipment caused by vibration is reduced, and the service life of the device is prolonged.
The utility model discloses the technical scheme who further injects is:
the side face of the arc boss, which is contacted with the permanent magnet rotor assembly, is provided with a second shock insulation cushion for reducing the impact force of the two magnetic bases on the square shaft, so that the vibration of the operation of the equipment is effectively isolated, and the impact force of the first magnetic base and the second magnetic base on the square shaft can be effectively reduced during automatic reset;
the semicircular sliding block for reducing the friction force is arranged on the square shaft and is made of polytetrafluoroethylene, so that the friction force of the first magnetic seat and the second magnetic seat on the square shaft can be reduced;
a guide shaft used for limiting the axial movement of the first magnetic seat and the second magnetic seat is arranged around the motor shaft, and meanwhile, the guide shaft is convenient to mount.
The utility model has the advantages that: the permanent magnet rotor assembly is fixed on an output shaft of the motor, the conductor rotor assembly is fixed on a load shaft, when the coupler is static, the torsion spring is not extruded, the bolt is positioned at a first station of a horizontal position, the induction conductor and the first magnetic seat and the second magnetic seat respectively have a minimum clearance, the size of the minimum clearance can be adjusted through the screw, when the motor is started, the rotating speed of the coupler is lower than a certain rotating speed w1, due to the action of initial torsion of the torsion spring, the bolt is positioned at the first station of the horizontal position, the induction conductor and the first magnetic seat and the second magnetic seat are respectively increased to enable the first magnetic seat and the second magnetic seat to be in contact with the screw, and the torque is slightly lower than that of the minimum air gap, so that the light-load starting effect is achieved; when the coupler rotates to a certain rotating speed w1, the torque spring is extruded due to the action of centrifugal force, the bolt rotates outwards, the gap between the induction conductor and the first magnetic seat and the gap between the induction conductor and the second magnetic seat can change according to the overload condition of the load, the motor outputs rated load when the gap is minimum, the load gradually decreases when the gap gradually increases, the motor outputs rated load not higher than 2% when the gap is maximum, the variable gap can automatically change along with the working state and the overload state of the motor, the vibration of the motor and the load can be reduced and isolated through the non-contact transmission of the induction rotor and the permanent magnet rotor, the variable gap can automatically change along with the change of the load, the coupler can timely change the output of the coupler by adjusting the variable gap when the motor encounters overlarge load and large impact load in the working process, and the coupler can always work in a normal load state, be unlikely to transship and impact load and cause the motor to overflow and damage the motor, in addition, the epaxial circular arc boss in square and first shock insulation pad effectively play reduce the impact, reduce frictional effect, the semi-circular slider that polytetrafluoroethylene made reduces the epaxial frictional force of first magnetism seat and second magnetism seat in square, has increased the life of device, and the guiding axle has played the effect of the installation of being convenient for.
Drawings
Fig. 1 and 3 are cross-sectional views of the present invention;
FIG. 2 is a schematic view of the structure A in FIG. 1;
FIG. 4 is an enlarged view of B in FIG. 3;
fig. 5 is a schematic view of the guide shaft of the present invention;
FIG. 6 is a schematic view of the semicircular slider of the present invention;
wherein: the vibration isolation device comprises a motor 1, a motor shaft 2, a first flange 2, a load shaft 3, a second flange 4, an expansion sleeve 5, a square shaft 6, a first magnetic seat 7, a second magnetic seat 8, a magnet 9, a first cover plate 10, a second cover plate 11, a spring seat 12, a rotating shaft 13, a guide shaft 14, a torsion spring 15, a bolt 16, a bolt 17, a second vibration isolation cushion 18, a semicircular sliding block 19, a first conductor disc 20, a second conductor disc 21, a connecting rod 22, an induction conductor 23, a radiating copper sheet 24, an arc boss 25 and a first vibration isolation cushion 26.
Detailed Description
The technical solution in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention;
in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present invention, and furthermore, the terms "first", "second", and "third" are only used for descriptive purposes and are not intended to indicate or imply relative importance;
in the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or connected between two elements, and those skilled in the art can understand the specific meaning of the terms in the present invention in specific situations;
example 1
The distance-limited permanent magnet coupler with the buffering function comprises a permanent magnet rotor assembly and a conductor rotor assembly, wherein a first flange 2 is connected to a motor shaft 1, a second flange 4 is connected to a load shaft 3, the first flange 2 and the second flange 4 are respectively fixed to the motor shaft 1 and the load shaft 3 through an expansion sleeve 5, one end, close to the load shaft 3, of the first flange 1 is connected with a square shaft 6, the square shaft 6 is connected with the permanent magnet rotor assembly, the second flange 4 is connected with the conductor rotor assembly, an arc boss 25 used for reducing friction is arranged at the connection position of the square shaft 6 and the permanent magnet rotor assembly, and a first shock insulation pad 26 is arranged on the upper surface of the arc boss 25;
the permanent magnet rotor assembly comprises a first magnetic base 7 and a second magnetic base 8 which are symmetrically arranged, wherein a magnet 9 is embedded in one opposite surface of the first magnetic base 7 and the second magnetic base 8 respectively, the magnet 9 is fixed in the first magnetic base 7 and the second magnetic base 8 through a first cover plate 10 and a second cover plate 11 respectively, a spring seat 12 is arranged on one surface, far away from the magnet 9, of the first cover plate 10, a rotating shaft 13 is arranged on the spring seat 12, a torsion spring 15 is sleeved on the rotating shaft 13, one end of the torsion spring 15 is connected to the spring seat 12, the other end of the torsion spring is connected with a bolt 16, a bolt 17 for limiting is in threaded connection with the bolt 16, when the coupler is static, the torsion spring 15 is not extruded, the bolt 16 is positioned at a first station of a horizontal position, when the coupler rotates, the torsion spring 15 is extruded due to the action of centrifugal force, and;
the conductor rotor assembly comprises a first conductor disc 20 and a second conductor disc 21 which are respectively arranged on the opposite sides of the first magnetic base 7 and the second magnetic base 8, the first conductor disc 20 and the second conductor disc 21 are connected through a connecting rod 22, induction conductors 23 are respectively arranged on the opposite sides of the first conductor disc 20 and the second conductor disc 21, gaps are respectively reserved between the induction conductors 23 and the first magnetic base 7 and the second magnetic base 8, heat dissipation copper sheets 24 for cooling are respectively arranged on the opposite sides of the first conductor disc 20 and the second conductor disc 21, and the size of the gap between the permanent magnet rotor assembly and the conductor rotor assembly can be changed by the first magnetic base 7 and the second magnetic base 8 sliding on the square shaft 6 along the axial direction;
be equipped with the second shock insulation pad 18 that is used for reducing the impact force of two magnetism seats to square shaft 6 in the side of circular arc boss 25 and the contact of permanent magnet rotor subassembly, the vibrations of effective isolation equipment operation, can effectively reduce the impact force of first magnetism seat 7 and the 8 pair square shaft 6 of second magnetism seat during automatic re-setting, be equipped with the semi-circular slider 19 that is used for reducing frictional force on square shaft 6, semi-circular slider 19 material is polytetrafluoroethylene, can reduce the frictional force of first magnetism seat 7 and the 8 on square shaft 6 of second magnetism seat, be equipped with the guiding axle 14 that is used for injecing first magnetism seat 7 and the 8 axial displacement of second magnetism seat around motor shaft 1, guiding axle 14 is also convenient for the installation simultaneously.
The working process of the embodiment:
this device is when using, permanent magnet rotor subassembly is connected and is fixed on the motor shaft, conductor rotor subassembly is connected with the load axle, when permanent magnet rotor subassembly rotational speed is lower, the bolt is in first station, the response conductor is a certain value between a-10mm with the minimum clearance of first magnetic base and second magnetic base respectively this moment, the a value is greater than 3mm, be less than 10mm, concrete value is by the adjusting position decision of screw before starting, after starting certain rotational speed, response conductor and first magnetic base clearance will become 3mm, motor output load is the rated load of motor this moment, after starting, motor overload becomes maximum clearance when motor output is above rated load promptly, the clearance becomes minimum clearance again automatically when motor output resumes below the rated load.
Above embodiment only is for explaining the utility model discloses a technical thought can not be injectd with this the utility model discloses a protection scope, all according to the utility model provides a technical thought, any change of doing on technical scheme basis all falls into the utility model discloses within the protection scope.
Claims (5)
1. The utility model provides a limit for distance type permanent magnet coupler with buffer function, includes the coupler body, its characterized in that: the coupler comprises a permanent magnet rotor assembly and a conductor rotor assembly, a first flange (2) is connected to a motor shaft (1), a second flange (4) is connected to a load shaft (3), the first flange (2) and the second flange (4) are respectively fixed to the motor shaft (1) and the load shaft (3) through an expansion sleeve (5), a square shaft (6) is connected to one end, close to the load shaft (3), of the first flange (2), the permanent magnet rotor assembly is connected to the square shaft (6), the conductor rotor assembly is connected to the second flange (4), an arc boss (25) used for reducing friction is arranged at the connection position of the square shaft (6) and the permanent magnet rotor assembly, and a first shock insulation pad (26) is arranged on the upper surface of the arc boss (25);
the permanent magnet rotor assembly comprises a first magnetic base (7) and a second magnetic base (8) which are symmetrically arranged, wherein magnets (9) are respectively embedded in the opposite surfaces of the first magnetic base (7) and the second magnetic base (8), the magnets (9) are respectively fixed in the first magnetic base (7) and the second magnetic base (8) through a first cover plate (10) and a second cover plate (11), a spring seat (12) is arranged on the surface, far away from the magnets (9), of the first cover plate (10), a rotating shaft (13) is arranged on the spring seat (12), a torsion spring (15) is sleeved on the rotating shaft (13), one end of the torsion spring (15) is connected to the spring seat (12), a bolt (16) is connected to the other end of the torsion spring, and a screw (17) for limiting is in threaded connection with the bolt (16);
when the coupler is static, the torsion spring (15) is not pressed, the bolt (16) is in a first station of a horizontal position, when the coupler rotates, the torsion spring (15) is pressed due to the action of centrifugal force, and the bolt (16) rotates outwards;
the conductor rotor assembly comprises a first conductor disc (20) and a second conductor disc (21) which are respectively arranged on the opposite sides of a first magnetic base (7) and a second magnetic base (8), the first conductor disc (20) and the second conductor disc (21) are connected through a connecting rod (22), induction conductors (23) are respectively arranged on the opposite sides of the first conductor disc (20) and the second conductor disc (21), gaps are respectively reserved between the induction conductors (23) and the first magnetic base (7) and the second magnetic base (8), and heat dissipation copper sheets (24) for cooling are respectively arranged on the opposite sides of the first conductor disc (20) and the second conductor disc (21);
the size of the gap between the permanent magnet rotor assembly and the conductor rotor assembly can be changed by the first magnetic seat (7) and the second magnetic seat (8) sliding on the square shaft (6) along the axial direction.
2. The distance-limited permanent magnet coupler with the buffering function according to claim 1, wherein: and a second shock insulation cushion (18) for reducing the impact force of the two magnetic seats on the square shaft (6) is arranged on the side surface of the arc boss (25) contacted with the permanent magnet rotor assembly.
3. The distance-limited permanent magnet coupler with the buffering function according to claim 1, wherein: and a semicircular sliding block (19) for reducing friction force is arranged on the square shaft (6).
4. The distance-limited permanent magnet coupler with the buffering function according to claim 1, wherein: a guide shaft (14) for limiting the axial movement of the first magnetic seat (7) and the second magnetic seat (8) is arranged around the motor shaft.
5. The distance-limited permanent magnet coupler with the buffering function according to claim 1, wherein: the screw (17) is adjustable in position on the bolt (16) to adjust the static air gap and the minimum air gap between the permanent magnet rotor assembly and the conductor rotor assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922245313.4U CN210608889U (en) | 2019-12-13 | 2019-12-13 | Distance limiting type permanent magnet coupler with buffering function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922245313.4U CN210608889U (en) | 2019-12-13 | 2019-12-13 | Distance limiting type permanent magnet coupler with buffering function |
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| Publication Number | Publication Date |
|---|---|
| CN210608889U true CN210608889U (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922245313.4U Active CN210608889U (en) | 2019-12-13 | 2019-12-13 | Distance limiting type permanent magnet coupler with buffering function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112737276A (en) * | 2020-12-15 | 2021-04-30 | 山西江淮重工有限责任公司 | Main shaft structure of torque-limiting permanent magnet eddy current transmission device |
-
2019
- 2019-12-13 CN CN201922245313.4U patent/CN210608889U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112737276A (en) * | 2020-12-15 | 2021-04-30 | 山西江淮重工有限责任公司 | Main shaft structure of torque-limiting permanent magnet eddy current transmission device |
| CN112737276B (en) * | 2020-12-15 | 2022-11-01 | 山西江淮重工有限责任公司 | Main shaft structure of torque-limiting permanent magnet eddy current transmission device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A distance limiting permanent magnet coupler with buffer function Effective date of registration: 20220330 Granted publication date: 20200522 Pledgee: Zijin Trust Co.,Ltd. Pledgor: NANJING MAGNET INTELLIGENT TECHNOLOGY Co.,Ltd. Registration number: Y2022980003524 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230420 Granted publication date: 20200522 Pledgee: Zijin Trust Co.,Ltd. Pledgor: NANJING MAGNET INTELLIGENT TECHNOLOGY Co.,Ltd. Registration number: Y2022980003524 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |