CN218761031U

CN218761031U - Hollow shaft internal rotation type magnetic powder clutch

Info

Publication number: CN218761031U
Application number: CN202223366603.2U
Authority: CN
Inventors: 邓丽斌; 邓耀威
Original assignee: Dongguan Yoseen Mechanical And Electrical Co ltd
Current assignee: Dongguan Yoseen Mechanical And Electrical Co ltd
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-03-28
Anticipated expiration: 2032-12-15

Abstract

The utility model belongs to the technical field of magnetic powder clutch, a spiral magnetic powder clutch in hollow shaft is disclosed. This formula magnetic powder clutch revolves in hollow shaft includes the hollow shaft, the hollow shaft periphery is rotated and is connected with the flange, the rotation section of thick bamboo, end cover and back lid, the flange is connected with the rotation section of thick bamboo, it forms first accommodation space with the end cover to rotate the section of thick bamboo, first accommodation space be used for holding the magnetic and with hollow shaft fixed connection's rotation portion, it has the protecgulum to rotate a section of thick bamboo external connection, it has open-ended second accommodation space to form between first coil seat and the second coil seat, set up the coil in the second accommodation space, it has first recess to rotate a position relative with the second opening, set up logical magnetic ring in the first recess. The hollow shaft internal rotation type magnetic powder clutch is safe to use, convenient to connect a material shaft of external equipment, capable of increasing output torque through the arrangement of the magnetic through ring, and capable of effectively avoiding poor magnetic breaking effect after power failure.

Description

Hollow shaft internal rotation type magnetic powder clutch

Technical Field

The utility model relates to a magnetic particle clutch technical field especially relates to a formula magnetic particle clutch revolves in hollow shaft.

Background

The magnetic powder clutch is also called as an electromagnetic powder clutch, the magnetic powder clutch transmits torque by utilizing magnetic powder according to an electromagnetic principle, has the advantages of basically linear relation between excitation current and transmission torque, high response speed, simple structure, no pollution, no noise, no impact vibration, energy conservation and the like, and is an automatic control element with multiple purposes and excellent performance. Compared with other types of clutches, the clutch can better play the role of a mechanical power transmission system and ensure the efficient and stable operation of the transmission system. The hollow shaft internal rotation type magnetic powder clutch is a magnetic powder clutch, and is simpler in installation and connection due to the fact that a material shaft of external equipment is convenient to connect, and the working mode is an internal rotation type, so that the hollow shaft internal rotation type magnetic powder clutch is safer compared with an external rotation type magnetic powder clutch, and the application range of the hollow shaft internal rotation type magnetic powder clutch is gradually enlarged.

However, the hollow shaft internal rotation type clutch in the prior art has the defects of insufficient torque output, poor magnetic breaking effect after power failure, and easy generation of larger residual magnetism, thereby influencing the working efficiency of the clutch.

Therefore, a hollow shaft internal rotation type magnetic powder clutch is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a spiral shell formula magnetic powder clutch in hollow shaft, this spiral shell formula magnetic powder clutch in hollow shaft not only can connect external equipment's material axle conveniently, can also increase the moment of torsion, and the magnetic effect of breaking after the outage is better, promotes the work efficiency of clutch.

To achieve the purpose, the utility model adopts the following technical proposal:

the hollow shaft internal rotation type magnetic powder clutch comprises a hollow shaft, a first bearing is movably connected to the periphery of one end of the hollow shaft, a flange is fixedly connected to the periphery of the first bearing, a first key groove is formed in one end, far away from the first bearing, of the flange, a rotating cylinder is rotatably connected to the periphery of the hollow shaft, a second key groove is formed in one end of the rotating cylinder, the first key groove and the second key groove are oppositely arranged, a flat key is arranged on the first key groove and the second key groove to connect the flange and the rotating cylinder, the other end of the rotating cylinder is detachably connected with an end cover, the end cover is rotatably connected with the hollow shaft through a second bearing, the rotating cylinder and the end cover form a first accommodating space, the first accommodating space is used for accommodating magnetic powder and a rotating part, and the rotating part is fixedly connected with the hollow shaft; the hollow shaft internal rotation type magnetic powder clutch further comprises a front cover and a rear cover, the front cover is connected with the rotating cylinder in a rotating mode through a third bearing, the rear cover is connected with the hollow shaft in a rotating mode through a fourth bearing, the front cover is provided with a first coil base, the rear cover is provided with a second coil base, the first coil base and the second coil base are oppositely arranged to form a second accommodating space with an opening, the second accommodating space is used for accommodating a coil, a position, opposite to the opening, of the rotating cylinder is provided with a first groove, a through magnetic ring is arranged in the first groove, a third key groove is formed in the hollow shaft, and the third key groove is used for connecting an output shaft.

Preferably, a first rotor retaining ring and a second rotor retaining ring are respectively arranged on two sides of the rotating portion, and the second rotor retaining ring is arranged close to the end cover.

Preferably, the end cover has a first limiting groove on one side close to the rotary cylinder, and at least part of the second rotor retainer ring extends into the first limiting groove.

Preferably, the end surface of the end cover on the side far away from the rotating cylinder is provided with radiating fins, and the plurality of radiating fins are uniformly distributed along the circumferential direction of the end cover.

Preferably, a first retaining ring and a second retaining ring are fixedly arranged inside the rotating cylinder, and at least part of the first rotor retaining ring is positioned in a space between the first retaining ring and the second retaining ring.

Preferably, the rotating cylinder is provided with a second groove, and a first sealing ring is arranged in the second groove; the end cover is provided with a third groove, and a second sealing ring is arranged in the third groove.

Preferably, the rotating part has a fourth groove on a side close to the inner wall of the rotating cylinder.

Preferably, the rear cover is provided with heat radiation holes.

Preferably, the hollow shaft is connected with the first bearing through the first clamping piece, and the hollow shaft is connected with the fourth bearing through the second clamping piece.

Preferably, the rotating cylinder is provided with a first threaded hole, the end cover is provided with a connecting hole, and a first bolt penetrates through the connecting hole and then is in threaded connection with the first threaded hole so as to connect the rotating cylinder with the end cover.

The utility model has the advantages that:

the utility model discloses a spiral formula magnetic powder clutch in hollow shaft, this spiral formula magnetic powder clutch in hollow shaft includes the hollow shaft, the hollow shaft periphery is rotated and is connected with the flange, a rotation section of thick bamboo, end cover and hou gai, the flange is connected with a rotation section of thick bamboo, a rotation section of thick bamboo forms first accommodation space with the end cover, first accommodation space be used for holding the magnetic and with hollow shaft fixed connection's rotation portion, a rotation section of thick bamboo external connection has the protecgulum, it has open-ended second accommodation space to form between first coil seat and the second coil seat, set up the coil in the second accommodation space, a rotation section of thick bamboo has first recess with the relative position of second opening, it leads to the magnetic ring to set up in the first recess. The hollow shaft internal rotation type magnetic powder clutch is safe to use, convenient to connect a material shaft of external equipment, capable of increasing output torque through the arrangement of the magnetic through ring, and capable of effectively avoiding poor magnetic breaking effect after power failure.

Drawings

FIG. 1 is an exploded view of a hollow shaft internal rotation type magnetic powder clutch according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a hollow shaft internal rotation type magnetic powder clutch according to an embodiment of the present invention;

fig. 3 is a partially enlarged view of a in fig. 2.

In the figure:

1. a hollow shaft internal rotation type magnetic powder clutch;

10. a hollow shaft; 101. a rotating part; 1011. a first rotor retaining ring; 1012. a second rotor retainer ring; 1013. a fourth groove; 102. a first clamp spring; 103. a second clamp spring; 11. a first bearing; 12. a flange; 121. a third bearing; 122. a flat bond; 13. a rotating drum; 131. a first groove; 132. energizing a magnetic ring; 133. a first retainer ring; 134. a second retainer ring; 135. a first seal ring; 14. an end cap; 141. a first limiting groove; 143. a first bolt; 144. a second bearing; 15. a front cover; 151. a first coil base; 152. a second seal ring; 16. a rear cover; 161. a second coil holder; 162. a coil; 163. heat dissipation holes; 164. a fourth bearing; 17. and (4) conducting wires.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", and the like are used based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplification of operation, 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 should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The hollow shaft internal rotation type magnetic powder clutch is a magnetic powder clutch, and the hollow shaft internal rotation type magnetic powder clutch is convenient for connecting a material shaft of external equipment and is relatively safe in internal rotation type, so that the application range of the hollow shaft internal rotation type magnetic powder clutch is gradually enlarged. However, the hollow shaft internal rotation type clutch in the prior art has the disadvantages of insufficient torque output, poor magnetic interruption effect after power failure, and easy generation of larger residual magnetism, which affects the working efficiency of the clutch.

Accordingly, the present embodiment provides a magnetic powder clutch with an internal rotation type hollow shaft.

As shown in fig. 1 to 3, the embodiment provides a hollow shaft internal rotation type magnetic powder clutch 1, which includes a hollow shaft 10, a first bearing 11 is movably connected to an outer periphery of one end of the hollow shaft 10, a flange 12 is fixedly connected to an outer periphery of the first bearing 11, and a first key groove is formed at an end of the flange 12 away from the first bearing 11, a rotating cylinder 13 is rotatably connected to an outer periphery of the hollow shaft 10, a second key groove is formed at an end of the rotating cylinder 13, the first key groove and the second key groove are oppositely arranged, a flat key 122 is arranged in the first key groove and the second key groove to connect the flange 12 with the rotating cylinder 13, the other end of the rotating cylinder 13 is detachably connected to an end cover 14, the end cover 14 is rotatably connected to the hollow shaft 10 through a second bearing 144, the rotating cylinder 13 and the end cover 14 form a first accommodating space, the first accommodating space is used for accommodating magnetic powder and a rotating portion 101, and the rotating portion 101 is fixedly connected to the hollow shaft 10; the hollow shaft internal rotation type magnetic powder clutch 1 further comprises a front cover 15 and a rear cover 16, the front cover 15 is rotatably connected with the rotary cylinder 13 through a third bearing 121, the rear cover 16 is rotatably connected with the hollow shaft 10 through a fourth bearing 164, the front cover 15 is provided with a first coil base 151, the rear cover 16 is provided with a second coil base 161, the first coil base 151 and the second coil base 161 are oppositely arranged to form a second accommodating space with an opening, the second accommodating space is used for accommodating a coil 162, a first groove 131 is formed in the position, opposite to the opening, of the rotary cylinder 13, a magnetic through ring 132 is arranged in the first groove 131, a third key slot is formed in the hollow shaft 10, and the third key slot is used for being connected with an output shaft. Specifically, in the present embodiment, the flange 12 is connected to the rotary cylinder 13 through the flat key 122, the rotary cylinder 13 is connected to the end cover 14, the rotary cylinder 13 is rotatably connected to the front cover 15 through the third bearing 121, the hollow shaft 10 is rotatably connected to the hollow shaft 10 through the fourth bearing 164, the flange 12 is connected to an external input end, and the input end drives the flange 12 to rotate, so as to drive the rotary cylinder 13 and the end cover 14 to rotate together; coil 162 sets up in second accommodation space, and wire 17 gets into from back lid 16 and is connected with coil 162, for coil 162 power supply, and the position that the opening of a rotary drum 13 and second space corresponds sets up logical magnetic ring 132, can increase the moment of torsion of output, and can effectively avoid the magnetic break effect not good after the outage. The hollow shaft internal rotation type magnetic powder clutch 1 has large output torque and can ensure the magnetic breaking effect.

Further, a first rotor retaining ring 1011 and a second rotor retaining ring 1012 are respectively disposed on both sides of the rotating portion 101, and the second rotor retaining ring 1012 is disposed near the end cover 14. Specifically, this arrangement enables the magnetic powder to be located at the bottom end of the rotating portion 101 as much as possible, and can avoid a decrease in torque caused by the magnetic powder flowing to the distal end of the rotating portion 101.

Further, the end cap 14 has a first defining groove 141 on a side thereof adjacent to the rotary cylinder 13, and at least a portion of the second rotor collar 1012 extends into the first defining groove 141. Specifically, this arrangement can avoid a decrease in efficiency caused by the magnetic powder falling to the distal end of the rotating portion 101.

Further, the end surface of the end cover 14 on the side away from the rotary cylinder 13 is provided with a plurality of cooling fins which are uniformly distributed along the circumferential direction of the end cover 14. In particular, in the present embodiment, the arrangement is beneficial to dissipating heat generated by the coil 162 during operation through the heat sink, so as to ensure that the internal temperature is not too high, and prolong the service life.

Further, a first retainer ring 133 and a second retainer ring 134 are fixedly disposed inside the rotary cylinder 13, and at least a part of the first rotor retainer 1011 is located in a space between the first retainer ring 133 and the second retainer ring 134. Specifically, the first retainer ring 133 and the second retainer ring 134 are both used to prevent magnetic powder from falling to the distal end of the rotating portion 101, and can prevent efficiency from being reduced.

Further, the rotary cylinder 13 has a second groove, in which a first seal ring 135 is disposed; the end cap 14 has a third groove with a second seal 152 disposed therein. Specifically, in this embodiment, the first sealing ring 135 and the second sealing ring 152 are both felt sealing rings, which have better sealing performance and avoid magnetic powder leakage.

Further, the rotating part 101 has a fourth recess 1013 on a side close to the inner wall of the rotating cylinder 13. Specifically, in this embodiment, certain magnetic powder can be stored to fourth recess 1013, and can increase the mobility of magnetic powder, effectively avoid appearing the card pause in the course of the work, promote work efficiency.

Further, the rear cover 16 is provided with a heat radiation hole 163. Specifically, the heat dissipation holes 163 on the rear cover 16 are communicated with the outside, so that heat exchange between the heat dissipation fins of the end cover 14 and the outside can be increased, the heat dissipation effect is further improved, the internal temperature is not too high, and the service life is prolonged to a certain extent.

Further, the hollow shaft 10 is connected with the first bearing 11 through a first clamping piece, and the hollow shaft 10 is connected with the fourth bearing 164 through a second clamping piece. Specifically, in this embodiment, the hollow shaft 10 and the first bearing 11 are clamped by the first clamp spring 102, and the hollow shaft 10 and the fourth bearing 164 are clamped by the second clamp spring 103.

Further, the rotary cylinder 13 has a first threaded hole, the end cap 14 has a connection hole, and the first bolt 143 passes through the connection hole and then is screwed into the first threaded hole to connect the rotary cylinder 13 with the end cap 14. Specifically, the threaded connection is adopted, so that the connection effectiveness can be guaranteed, and the disassembly, assembly and maintenance can be facilitated.

Further, the interface that closes in the middle of first coil seat 151 and the second coil seat 161 adopts L type tang to come to close the joint, can guarantee first coil seat 151 and second coil seat 161's concentricity like this to the better concentricity of guaranteeing the overall structure avoids appearing because the relatively poor problem of concentricity that the mode of screw locking caused, ensures that the performance of hollow shaft internal rotation formula magnetic powder clutch 1 is more balanced.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The hollow shaft internal rotation type magnetic powder clutch is characterized by comprising a hollow shaft (10), wherein a first bearing (11) is movably connected to the periphery of one end of the hollow shaft (10), a flange (12) is fixedly connected to the periphery of the first bearing (11), a first key groove is formed in one end, far away from the first bearing (11), of the flange (12), a rotating cylinder (13) is rotatably connected to the periphery of the hollow shaft (10), a second key groove is formed in one end of the rotating cylinder (13), the first key groove and the second key groove are arranged oppositely, a flat key is arranged between the first key groove and the second key groove so as to connect the flange (12) and the rotating cylinder (13), the other end of the rotating cylinder (13) is detachably connected with an end cover (14), the end cover (14) is rotatably connected with the hollow shaft (10) through a second bearing (144), the rotating cylinder (13) and the end cover (14) form a first accommodating space, the first accommodating space is used for accommodating a rotating magnetic powder part (101), and the hollow shaft (10) is fixedly connected with the hollow shaft (10); the hollow shaft internal rotation type magnetic powder clutch further comprises a front cover (15) and a rear cover (16), the front cover (15) is rotatably connected with the rotating cylinder (13) through a third bearing (121), the rear cover (16) is rotatably connected with the hollow shaft (10) through a fourth bearing (164), the front cover (15) is provided with a first coil base (151), the rear cover (16) is provided with a second coil base (161), the first coil base (151) and the second coil base (161) are oppositely arranged to form a second accommodating space with an opening, the second accommodating space is used for accommodating a coil (162), the rotating cylinder (13) and a position opposite to the opening are provided with a first groove (131), a magnetic through ring (132) is arranged in the first groove (131), a third key groove is arranged inside the hollow shaft (10), and the third key groove is used for connecting an output shaft.

2. A hollow shaft internal rotation type magnetic powder clutch according to claim 1, characterized in that the rotating portion (101) is provided with a first rotor retaining ring (1011) and a second rotor retaining ring (1012) at both sides, respectively, and the second rotor retaining ring (1012) is provided near the end cover (14).

3. A hollow-shaft internal-rotation magnetic powder clutch according to claim 2, characterized in that the end cap (14) has a first limiting groove (141) on the side close to the rotary cylinder (13), at least part of the second rotor collar (1012) protruding into the first limiting groove (141).

4. The hollow shaft internal rotation type magnetic powder clutch according to claim 3, wherein the end surface of the end cover (14) on the side far away from the rotating cylinder (13) is provided with cooling fins, and a plurality of cooling fins are uniformly distributed along the circumferential direction of the end cover (14).

5. Hollow shaft internal rotation magnetic powder clutch according to claim 2, characterized in that a first collar (133) and a second collar (134) are fixedly arranged inside the rotary cylinder (13) and at least part of the first rotor collar (1011) is located in the space between the first collar (133) and the second collar (134).

6. Hollow shaft internal rotation magnetic powder clutch according to claim 1, characterized in that the rotating cylinder (13) has a second groove in which a first sealing ring (135) is arranged; the end cover (14) is provided with a third groove, and a second sealing ring (152) is arranged in the third groove.

7. A hollow shaft internal rotation type magnetic powder clutch according to claim 1, wherein the rotating portion (101) has a fourth groove (1013) on a side close to the inner wall of the rotating cylinder (13).

8. A hollow-shaft internal-rotation magnetic powder clutch according to claim 1, wherein the rear cover (16) is provided with a heat-radiating hole (163).

9. The hollow shaft internal rotation type magnetic powder clutch according to claim 1, wherein the hollow shaft (10) is connected with the first bearing (11) through a first clamping piece, and the hollow shaft (10) is connected with the fourth bearing (164) through a second clamping piece.

10. A hollow shaft internal rotation type magnetic powder clutch according to any one of claims 1 to 9, wherein the rotary cylinder (13) has a first threaded hole, the end cap (14) has a connection hole, and a first bolt (143) is screwed with the first threaded hole after passing through the connection hole to connect the rotary cylinder (13) with the end cap (14).