CN213521439U

CN213521439U - Direct-drive motor for rotary machine and crusher

Info

Publication number: CN213521439U
Application number: CN202022679720.9U
Authority: CN
Inventors: 皮尔让·夏尔诺
Original assignee: Sid Machinery Beijing Co ltd
Current assignee: Sid Machinery Beijing Co ltd
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-06-22
Anticipated expiration: 2030-11-18

Abstract

The utility model belongs to the technical field of the combined crusher, concretely relates to be used for rotary machine's direct drive motor and breaker, it is specific, direct drive motor includes: a main shaft, a stator assembly, a rotor assembly and a torque limiter; the rotor assembly comprises a rotor base and a permanent magnet, and the rotor base is sleeved on the outer side of the main shaft; the permanent magnet is annular and is fixed on the outer side of the rotor base; the torque limiter is annular, is arranged at the end part of the rotor base and is suitable for connecting the rotor base and the main shaft; the stator assembly comprises a stator base and a stator core, wherein a stator winding is wound on the stator core and is fixedly arranged on the inner wall of the stator base; the stator base is sleeved on the outer side of the rotor base. The direct drive motor is compact in structure and complete in function, and can realize high-speed/high-torque output only by a very small assembly space.

Description

Direct-drive motor for rotary machine and crusher

Technical Field

The utility model belongs to the technical field of the combined crusher, concretely relates to a directly drive motor and breaker for rotating machinery.

Background

In high speed and/or high torque electric machines, such as crushers, if hard objects enter the rotating machine, they may cause impacts or blockages between the rotor and the rotor or between the rotor and the stator of the rotating machine. These impacts or blockages can damage the rotor assembly, blades on the rotor, the stator, stator blades, or the drive itself. In addition, high speed and/or high torque electric motors generate heat due to the working forces between the rotor and the stator.

In the prior art, the protection is achieved by solving the above problems through separation, and specifically, there are three separation methods: 1) pulley drives, such as chinese patent CN 211105042U, have a mechanical shaft and an electric drive shaft of a rotating machine each provided with a pulley between which a torque is transmitted by means of a belt. 2) The clutches are separated by a separate friction or torque mounted between the mechanical and electrical shafts of the rotating machine. 3) The belt pulley and the clutch are combined for use. However, the above-mentioned solutions also have the following problems, specifically, the pulley transmission usually needs to be equipped with a pulley with a larger diameter and a belt matched with the pulley, especially when high-speed/high-torque transmission is realized; when the single clutch is adopted, the in-line clutch structure assembled in the sequence of the mechanical shaft, the clutch and the electric transmission shaft needs a larger axial clearance and a dislocation compensation flexible coupler, and particularly adopts a coupler assembly structure. The combined use of the pulley and the clutch does not solve the above problems.

Therefore, not enough above to, the utility model discloses urgent need provides a directly drive motor and breaker for rotary machine.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a directly drive motor and breaker for rotary machine to solve the problem of passing through among the prior art.

The utility model provides a directly drive motor for rotating machinery, include: a main shaft, a stator assembly, a rotor assembly and a torque limiter; the rotor assembly comprises a rotor base and a permanent magnet, and the rotor base is sleeved on the outer side of the main shaft; the permanent magnet is annular and is fixed on the outer side of the rotor base; the torque limiter is annular, is arranged at the end part of the rotor base and is suitable for connecting the rotor base and the main shaft; the stator assembly comprises a stator base and a stator core, wherein a stator winding is wound on the stator core and is fixedly arranged on the inner wall of the stator base; the stator base is sleeved on the outer side of the rotor base.

The direct drive motor for the rotating machine as described above, further preferably, the torque limiter includes a housing, a dual steel sheet, a friction plate, and a knob, and the housing is fixedly connected to the rotor base; the dual steel sheet and the friction sheet are both annular and arranged in the inner cavity of the shell, and the dual steel sheet is clamped between the two friction sheets and fixedly sleeved on the outer side of the main shaft; the knob is mounted on the housing, and an end portion of the knob is pressed against the friction plate.

In the direct drive motor for a rotary machine as described above, it is further preferable that a cooling passage extending in the direction of the rotation axis is provided in the main shaft; still include cooling module, cooling module includes rotary joint and cold water pipe, rotary joint is suitable for the intercommunication the cold water pipe with cooling channel.

The direct drive motor for a rotary machine as described above, further preferably, the rotor base includes an outer sleeve, an inner sleeve, and a connecting rib; the connecting rib is connected between the outer sleeve and the inner sleeve; the permanent magnet is sleeved outside the outer sleeve; the inner sleeve is sleeved outside the main shaft through a copper sleeve.

The direct drive motor for the rotating machine as described above, further preferably, the stator base includes an end cover and a cylinder body that are correspondingly connected, the end cover is provided with a first connecting portion, the cylinder body is provided with a second connecting portion, and the first connecting portion and the second connecting portion are both connected to the outer sleeve through a bearing.

The utility model also provides a breaker, including above-mentioned arbitrary direct drive motor, still include axis of rotation and broken blade, broken blade install in the axis of rotation, the tip of axis of rotation with the end connection of main shaft.

In the crusher, it is further preferable that a slot and a key groove are formed at an end of the main shaft, a spline is formed on an outer circumferential surface of the rotating shaft, and the rotating shaft is inserted into the slot of the main shaft by fitting the spline and the key groove.

In the crusher, it is further preferable that a slot and an insertion hole are formed at an end of the main shaft, a through hole and a connection fastener are formed on the rotating shaft, and the rotating shaft is inserted into the slot and is fixedly connected to the main shaft by the connection fastener, the insertion hole and the through hole.

The crusher as described above, further preferably, the end of the rotating shaft is further provided with an annular groove, and the annular groove is suitable for placing an annular sealing ring to hermetically connect the rotating shaft and the main shaft.

In the crusher described above, it is further preferable that the rotating shaft and the main shaft are formed integrally, and the crushing blade is attached to the main shaft.

Compared with the prior art, the utility model has the following advantage:

1. the utility model discloses a main shaft and locate in proper order rotor subassembly, stator module in the main shaft outside and the torque limiter who is used for connecting main shaft and rotor subassembly constitute a series connection compact and directly drive the motor, and because drive and separation and reunion all integrate to in the same main part, consequently only need very little assembly space, can provide high-speed and/or high torque output through directly driving the mode promptly.

2. The utility model discloses an among the direct drive motor, can provide impact or jam protection through the torque limiter of integration on the rotor subassembly.

3. The utility model discloses an among the breaker, directly drive the direct rotation axis with the breaker of motor and be connected, or directly adopt the axis of rotation to replace the main shaft, utilize and directly drive motor structure itself and realize strikeing or block up the protection, and need not to adopt current belt pulley solution etc..

4. The utility model discloses an among the direct drive motor, set up the cooling channel who passes through swivel joint intercommunication with the cooling tube on the main shaft for realize cooling function in the coolant liquid can flow into the axis of rotation.

Drawings

Fig. 1 is a schematic structural diagram of a direct drive motor for a rotary machine according to the present invention.

Description of reference numerals:

1-stator base, 2-stator core, 3-permanent magnet, 4-rotor base, 5-bearing, 6-copper sleeve, 7-main shaft, 8-friction plate, 9-dual steel sheet, 10-knob, 11-cooling channel, 12-rotary joint, 13-cold water pipe, 14-rotating shaft, 15-annular groove and 16-mounting flange.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope 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, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Example 1:

fig. 1 is a schematic structural diagram of a direct drive motor for a rotary machine in this embodiment, and specifically, as shown in fig. 1, the direct drive motor for a rotary machine disclosed in this embodiment includes: a main shaft 7, a stator assembly and a rotor assembly; the rotor assembly comprises a rotor base 4, a permanent magnet 3 and a torque limiter, wherein the rotor base 4 is sleeved on the outer side of the main shaft 7; the permanent magnet 3 is annular and is fixed on the outer side of the rotor base 4; the torque limiter is annular, is arranged at the end part of the rotor base 4 and is suitable for connecting the rotor base 4 with the main shaft 7; the stator assembly comprises a stator base 1 and a stator core 2, wherein a stator winding is wound on the stator core 2 and is fixedly arranged on the inner wall of the stator base 1; the stator base 1 is sleeved outside the rotor base 4.

Further, the torque limiter comprises a shell, a dual steel sheet 9, a friction plate 8 and a knob 10, wherein the shell is fixedly connected with the rotor base 4; the dual steel sheets 9 and the friction sheets 8 are annular and are arranged in the inner cavity of the shell, and the dual steel sheets 9 are clamped between the two friction sheets 8 and fixedly sleeved on the outer side of the main shaft 7; the knob 10 is mounted on the housing, and the end portion is pressed against the friction plate 8. Specifically, the knob 10 includes a pressing rod and a pressing spring, the pressing rod is screwed on the casing of the torque limiter, the pressing spring is sleeved at the lower end of the pressing rod, and the pressing spring presses the friction plate 8.

In the structure, a shell in the torque limiter is fixedly connected with the rotor base 4 and is suitable for rotating together with the rotor base 4, and the dual steel sheets 9 are fixedly connected with the main shaft 7 and are suitable for rotating together with the main shaft 7; the dual steel sheets 9 are clamped between the two friction plates 8, the pressing force is controlled through the knob 10, the dual steel sheets and the shell are in a pressing state, and the torque is transmitted by using the rotating friction force between the dual steel sheets 9 and the shell to drive the main shaft 7 to rotate together. The knob 10 is adapted to adjust the pressure between the friction plate 8 and the couple steel plate 9, thereby adjusting the transmission ratio of the torque limiter.

Further, a cooling channel 11 extending along the axial direction of the main shaft 7 is arranged in the main shaft 7; the cooling device further comprises a cooling assembly, wherein the cooling assembly comprises a rotary joint 12 and a cold water pipe 13, and the rotary joint 12 is suitable for communicating the cold water pipe 13 with the cooling channel 11. The working forces between the rotor assembly and the stator assembly, high speed and/or high torque transmissions, generate heat, and cooling is facilitated by the provision of cooling channels 11 within the main shaft 7 and swivel joints 12 and cold water pipes 13 in communication with the cooling channels 11.

Further, the rotor base 4 comprises an outer sleeve, an inner sleeve and a connecting rib; the connecting rib is connected between the outer sleeve and the inner sleeve; the permanent magnet 3 is sleeved outside the outer sleeve; the inner sleeve is sleeved outside the main shaft 7 through a copper sleeve 6. In particular, the copper bush 6 may be a brass bush bearing 5 or any other type of steel ball/needle or the like bearing 5. The provision of the copper bush 6 not only facilitates corresponding mounting of the rotor base 4 and the main shaft 7, but also serves to allow relative rotation of the main shaft 7 and the rotor base 4 in the event of impact/jamming friction or separation of the torque limiter.

Further, stator base 1 is including corresponding end cover and the barrel of connecting, be equipped with first connecting portion on the end cover, be equipped with the second connecting portion on the barrel, first connecting portion with the second connecting portion all through bearing 5 with the outer sleeve is connected. The stator base 1 adopts a split structure, so that the stator base 1 is convenient to mount.

Further, the stator core 2 and the permanent magnet 3 are in the shape of an annular column or an annular disc, or a plurality of annular columns are matched for use.

The working process of the embodiment is as follows:

after the direct drive motor is assembled according to the structure, the stator base and the rotating machine are fixedly installed through the installation flange 16, then the coil winding is electrified, and after the coil winding is electrified, the stator iron core 2 provides a magnetic field rotating in the radial direction for the permanent magnet 3, so that the rotor assembly can rotate around the axis line of the main shaft 7 relative to the stator assembly; and because the rotor assembly is connected with the main shaft 7 through the torque limiter, the rotor assembly can synchronously drive the main shaft 7 to rotate.

Example 2:

the embodiment discloses a crusher, which comprises a rotating shaft 14 and a crushing blade besides the direct drive motor disclosed in embodiment 1, wherein the crushing blade is mounted on the rotating shaft 14, and the rotating shaft 14 is connected with the end part of the main shaft 7.

The crusher disclosed in this embodiment adopts a direct drive motor as a drive, wherein a rotating shaft 14 of the crusher and a main shaft 7 of the direct drive motor are separately arranged, and the specific embodiment discloses the following two separate connection schemes:

1) the end part of the main shaft 7 is provided with a slot and a key groove, the peripheral surface of the rotating shaft 14 is provided with a spline, and the rotating shaft 14 is inserted into the slot of the main shaft 7 through the matching of the spline and the key groove;

2) the end part of the main shaft 7 is provided with a slot and an insertion hole, the rotating shaft 14 is provided with a through hole and a connecting fastener, and the rotating shaft 14 is inserted into the slot and is fixedly connected with the main shaft 7 through the connection of the connecting fastener with the insertion hole and the through hole.

Of course, other connection schemes, such as a locking connection, can be used for the spindle 7 and the rotating shaft 14.

When the main shaft 7 and the rotating shaft 14 are separately arranged, the cooling channel 11 is also arranged at the shaft center line of the rotating shaft 14 and is communicated with the cooling channel 11 of the main shaft 7. Meanwhile, in order to prevent the leakage of the cooling liquid in the cooling channel 11, further, an annular groove 15 is further formed at the end of the rotating shaft 14, and the annular groove 15 is suitable for placing an annular sealing ring to hermetically connect the rotating shaft 14 and the main shaft 7.

Example 3:

this example discloses a crusher, which differs from example 2 only in that: in embodiment 2, the rotating shaft 14 and the main shaft 7 are separate structures, while in this embodiment, the rotating shaft 14 and the main shaft 7 are integrally formed, and the crushing blade is mounted on the main shaft 7.

That is, in this embodiment, the main shaft 7 of the direct drive motor is replaced by an extension of the rotating shaft 14 of the crusher, and all structures mounted on the main shaft 7 of the direct drive motor are directly mounted on the rotating shaft 14 of the crusher.

Compared with the prior art, the utility model has the following advantage:

1. the utility model discloses a main shaft 7 and locate in proper order the rotor subassembly in the 7 outsides of main shaft, stator module and the torque limiter who is used for connecting main shaft 7 and rotor subassembly constitute a series connection compact and directly drive the motor, and because drive and separation and reunion all integrate to in the same main part, consequently only need very little assembly space, can provide high-speed and/or high torque output with directly driving the mode.

3. The utility model discloses an among the breaker, directly drive the motor and directly be connected with the axis of rotation 14 of breaker, or directly adopt axis of rotation 14 to replace main shaft 7, utilize and directly drive motor structure itself and realize strikeing or block up the protection, and need not to adopt current belt pulley solution etc..

4. The utility model discloses an among the direct drive motor, set up on main shaft 7 and pass through the cooling channel 11 of rotary joint 12 intercommunication with the cooling tube for realize cooling function in the coolant liquid can flow into axis of rotation 14.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A direct drive motor for a rotary machine, comprising: a main shaft, a stator assembly, a rotor assembly and a torque limiter; the rotor assembly comprises a rotor base and a permanent magnet, and the rotor base is sleeved on the outer side of the main shaft; the permanent magnet is annular and is fixed on the outer side of the rotor base; the torque limiter is annular, is arranged at the end part of the rotor base and is suitable for connecting the rotor base and the main shaft; the stator assembly comprises a stator base and a stator core, wherein a stator winding is wound on the stator core and is fixedly arranged on the inner wall of the stator base; the stator base is sleeved on the outer side of the rotor base.

2. The direct drive motor for a rotary machine of claim 1, wherein the torque limiter comprises a housing, a pair of steel plates, a friction plate and a knob, the housing is fixedly connected with the rotor base; the dual steel sheet and the friction sheet are both annular and arranged in the inner cavity of the shell, and the dual steel sheet is clamped between the two friction sheets and fixedly sleeved on the outer side of the main shaft; the knob is mounted on the housing, and an end portion of the knob is pressed against the friction plate.

3. The direct drive motor for a rotary machine according to claim 2, wherein a cooling passage extending in the direction of the rotation axis is provided in the main shaft; still include cooling module, cooling module includes rotary joint and cold water pipe, rotary joint is suitable for the intercommunication the cold water pipe with cooling channel.

4. A direct drive motor for a rotary machine as set forth in claim 3 wherein said rotor base includes an outer sleeve, an inner sleeve and a connecting rib; the connecting rib is connected between the outer sleeve and the inner sleeve; the permanent magnet is sleeved outside the outer sleeve; the inner sleeve is sleeved outside the main shaft through a copper sleeve.

5. The direct drive motor for a rotary machine according to claim 4, wherein the stator base includes an end cover and a cylinder body which are connected correspondingly, the end cover is provided with a first connecting portion, the cylinder body is provided with a second connecting portion, and the first connecting portion and the second connecting portion are both connected with the outer sleeve through a bearing.

6. A crusher comprising a direct drive motor as claimed in any one of claims 1 to 5, and further comprising a rotating shaft and a crushing blade, said crushing blade being mounted on said rotating shaft, the end of said rotating shaft being connected to the end of said main shaft.

7. The crusher of claim 6, wherein the end of the main shaft is provided with a slot and a key groove, the outer circumferential surface of the rotating shaft is provided with a spline, and the rotating shaft is inserted into the slot of the main shaft through the matching of the spline and the key groove.

8. The crusher of claim 6, wherein the end of the main shaft is provided with a slot and a hole, the rotating shaft is provided with a through hole and a connecting fastener, the rotating shaft is inserted into the slot and is fixedly connected with the main shaft through the connecting fastener and the hole.

9. A crusher as claimed in any one of claims 7 to 8, in which the end of the shaft is further provided with an annular groove adapted to receive an annular sealing ring to sealingly connect the shaft to the main shaft.

10. The crusher of claim 6 wherein the rotating shaft is of unitary construction with the main shaft on which the crushing blades are mounted.