CN215885135U

CN215885135U - Driving system and bucket elevator

Info

Publication number: CN215885135U
Application number: CN202122333976.9U
Authority: CN
Inventors: 汪正兵; 邬明均; 嵇耀; 刘增民; 周欢; 王颖; 顾炀
Original assignee: Nanjing High Speed and Accurate Gear Group Co Ltd
Current assignee: Nanjing High Speed and Accurate Gear Group Co Ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2022-02-22
Anticipated expiration: 2031-09-26

Abstract

The utility model relates to the technical field of bucket elevators, and discloses a driving system and a bucket elevator. The driving system comprises a first shell, a permanent magnet motor, a spiral umbrella shaft and a transmission device, wherein the first shell is provided with a cavity; the permanent magnet motor comprises a motor stator and a motor rotor which are coaxial, and the motor stator is fixed on the side wall of the cavity; the spiral shaft penetrates through the first shell and the motor rotor, the spiral shaft is fixedly connected with the motor rotor, and one end of the spiral shaft is provided with an umbrella tooth part; the transmission device comprises a bevel gear, and the bevel gear is connected to the bevel gear part in a meshed mode. The utility model adopts the permanent magnet motor to be matched with the spiral umbrella shaft for driving, does not need to be provided with a reduction box, a liquid coupling and other mechanisms, improves the transmission efficiency, and has the advantages of compact structure, light weight, small occupied area and the like; moreover, the driving system has a small number of parts, and the overall reliability is improved.

Description

Driving system and bucket elevator

Technical Field

The utility model relates to the technical field of bucket elevators, in particular to a driving system and a bucket elevator.

Background

The bucket elevator is a continuous conveying machine which utilizes a series of hoppers uniformly fixed on an endless traction member to vertically lift materials, and is suitable for vertically conveying powdery, granular and small-block bulk materials, such as grains, coal, cement, crushed ore and the like. The bucket elevator is widely applied to the industries of cement, mines, grains and the like.

The common driving scheme of the bucket elevator at present is as follows: the system comprises an asynchronous motor, a fluid coupling/coupler, a parallel shaft speed reducer, a backstop and an overrunning clutch. Practical use shows that the driving system has the problems of large overall weight, large vibration noise, complex structure, low operation efficiency, liquid coupling, oil leakage and the like.

Accordingly, there is a need for a driving system and a bucket elevator to solve the above problems.

SUMMERY OF THE UTILITY MODEL

Based on the above, the utility model aims to provide a driving system and a bucket elevator, wherein the driving system is driven by matching a permanent magnet motor with a spiral bevel shaft, a reduction box, a liquid coupling and other mechanisms are not required to be arranged, so that the transmission efficiency is improved, and the bucket elevator has the advantages of compact structure, light weight, small occupied area and the like; moreover, the driving system has a small number of parts, and the overall reliability is improved.

In order to achieve the purpose, the utility model adopts the following technical scheme:

in one aspect, there is provided a drive system comprising:

a first housing provided with a cavity;

the permanent magnet motor comprises a motor stator and a motor rotor which are coaxial, and the motor stator is fixed on the side wall of the cavity;

the spiral umbrella shaft penetrates through the first shell and the motor rotor, the spiral umbrella shaft is fixedly connected with the motor rotor, and one end of the spiral umbrella shaft is provided with an umbrella tooth part;

and the transmission device comprises a bevel gear, and the bevel gear is meshed and connected with the bevel gear part.

As a preferred technical scheme of a drive system, the spiral umbrella further comprises a backstop, an inner ring of the backstop is connected with one end key of the spiral umbrella shaft departing from the umbrella tooth part, and an outer ring of the backstop is fixed on the first shell.

As a preferred technical solution of the driving system, the transmission further includes a second housing, a sun gear, and a plurality of planet gears, the second housing is connected to the first housing, and the bevel gear, the sun gear, and the planet gears are all disposed in the second housing;

the sun gear is fixedly connected with the bevel gear, the plurality of planet gears are annularly arranged on the sun gear, and the sun gear is meshed with the planet gears; the second shell is provided with an inner gear ring, and one side, far away from the sun gear, of the planet gear is connected to the inner gear ring in a meshed mode.

As a preferable technical solution of the driving system, the sun gear includes a first wheel shaft and a first tooth portion, a groove is provided at an end of the bevel gear, the first wheel shaft extends into the groove, the first wheel shaft and the groove are connected by a spline or a crown gear, and the first tooth portion is connected to the planet gear in a meshing manner.

As a preferable technical solution of the driving system, the planet gear includes a second wheel shaft and a second tooth portion, a first bearing is disposed between the second wheel shaft and the second tooth portion, and the second tooth portion is connected between the sun gear and the inner gear ring in a meshing manner.

As a preferable technical solution of the driving system, the transmission device further includes a planetary rotating stand, the planetary rotating stand is mounted at an end of the plurality of second wheel shafts, and the plurality of planetary wheels drive the planetary rotating stand to rotate when rotating around the sun gear.

As a preferred technical scheme of the driving system, the second housing is provided with a fixing hole, the planetary rotating frame is arranged in the fixing hole in a penetrating manner, and a second bearing is arranged between the planetary rotating frame and the fixing hole.

As a preferred technical scheme of a driving system, one side of the planetary rotating frame, which is far away from the planetary wheel, is connected to a lifting system through a hollow shaft and a locking disc.

As a preferred technical scheme of the driving system, the motor stator is assembled on the side wall of the cavity in an interference manner;

the motor rotor is connected to the spiral shaft in an interference mode.

In another aspect, a bucket elevator is provided, which includes the driving system according to any one of the above aspects.

The utility model has the beneficial effects that:

when the permanent magnet motor is electrified, the electrode stator of the permanent magnet motor drives the motor rotor to rotate, the motor rotor drives the spiral bevel shaft to rotate, and then the bevel gear part at the end part of the spiral plug shaft drives the bevel gear of the transmission device to rotate. The utility model adopts the permanent magnet motor to be matched with the spiral umbrella shaft for driving, does not need to be provided with a reduction box, a liquid coupling and other mechanisms, improves the transmission efficiency, and has the advantages of compact structure, light weight, small occupied area and the like; moreover, the driving system has a small number of parts, and the overall reliability is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

FIG. 1 is a cross-sectional view of a drive system provided in accordance with an embodiment of the present invention;

fig. 2 is an enlarged view of fig. 1 at a.

The figures are labeled as follows:

1. a first housing; 11. a housing main body; 12. an end cap;

2. a permanent magnet motor; 21. a motor stator; 22. a motor rotor;

3. a spiral shaft; 31. an umbrella tooth part;

4. a transmission device; 41. a bevel gear; 42. a second housing; 421. an inner gear ring; 43. a sun gear; 431. a first axle; 432. a first tooth portion; 44. a planet wheel; 441. a second wheel axle; 442. a second tooth portion; 443. a first bearing; 45. a planetary rotating stand; 46. a second bearing;

5. a backstop.

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 utility model and are not limiting of the utility model. 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, removably 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. 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", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured 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.

As shown in fig. 1 and 2, the present embodiment provides a bucket elevator, which includes a driving system including a first housing 1, a permanent magnet motor 2, a spiral shaft 3, and a transmission 4.

Specifically, the first housing 1 is provided with a cavity; the permanent magnet motor 2 comprises a motor stator 21 and a motor rotor 22 which are coaxial, and the motor stator 21 is fixed on the side wall of the cavity; the spiral shaft 3 penetrates through the first shell 1 and the motor rotor 22, the spiral shaft 3 is fixedly connected with the motor rotor 22, and one end of the spiral shaft 3 is provided with an umbrella tooth part 31; the transmission 4 comprises a bevel gear 41, and the bevel gear 41 is engaged and connected with the bevel gear part 31. Preferably, in this embodiment, the motor stator 21 is interference-assembled on the side wall of the cavity, so that the motor stator 21 is fixed on the side wall of the cavity; the motor rotor 22 is connected to the spiral shaft 3 in an interference manner, so that the spiral shaft 3 and the electrode rotor are fixedly connected.

When the electric motor works, the permanent magnet motor 2 is electrified, the electrode stator of the permanent magnet motor 2 drives the motor rotor 22 to rotate, the motor rotor 22 drives the spiral shaft 3 to rotate, and then the bevel gear part 31 at the end part of the spiral shaft 3 drives the bevel gear 41 of the transmission device 4 to rotate. In the embodiment, the permanent magnet motor 2 is matched with the spiral umbrella shaft 3 for driving, a reduction box, a liquid coupling and other mechanisms are not required to be arranged, the transmission efficiency is improved, and the permanent magnet motor has the advantages of compact structure, light weight, small occupied area and the like; moreover, the driving system has a small number of parts, and the overall reliability is improved.

In order to facilitate assembly of parts in the first housing 1, the first housing 1 includes a housing main body 11 and an end cover 12, the two ends of the housing main body 11 are open, the openings are respectively sealed by the end covers 12, and the end covers 12 are detachably mounted on the housing main body 11 through bolts. When assembled, the end cap 12 is detachable from the housing body 11 to perform assembly of the components in the first housing 1. Two end covers 12 are worn to establish by spiral shell umbrella axle 3, and all are provided with the bearing between spiral shell umbrella axle 3 and two end covers 12, realize rotatable coupling between spiral shell umbrella axle 3 and the first casing 1.

Preferably, the driving system further comprises a backstop 5, an inner ring of the backstop 5 is in key connection with one end of the spiral shaft 3, which is far away from the umbrella tooth part 31, and an outer ring of the backstop 5 is fixed on the first shell 1, so that the spiral shaft 3 is prevented from being reversed, and the materials in the hopper are prevented from scattering. In this embodiment, the backstop 5 is bolted to the end cap 12 on the side away from the transmission 4.

Preferably, the transmission 4 further includes a second casing 42, a sun gear 43 and a plurality of planet gears 44, the second casing 42 is connected to the first casing 1, and in the embodiment, the second casing 42 is connected with the first casing 1 through bolts. The bevel gear 41, the sun gear 43 and the planet gears 44 are all disposed within the second housing 42; the sun wheel 43 is fixedly connected with the bevel gear 41, a plurality of planet wheels 44 are annularly arranged on the sun wheel 43, and the sun wheel 43 is meshed with the planet wheels 44; the second housing 42 is provided with an inner gear ring 421, and the planet gears 44 are meshed with the inner gear ring 421 at the side away from the sun gear 43, wherein the sun gear 43, the planet gears 44 and the inner gear ring 421 form an NGW planetary gear train, so that the torque density ratio is improved.

Specifically, a bearing cap is provided in the second housing 42, and the bevel gear 41 is rotatably mounted in the bearing cap by a bearing.

The sun gear 43 comprises a first wheel shaft 431 and a first tooth part 432, a groove is arranged at the end of the bevel gear 41, the first wheel shaft 431 extends into the groove, the first wheel shaft 431 and the groove are connected through a spline or a crowned tooth to realize synchronous rotation of the bevel gear 41 and the sun gear 43, and the first tooth part 432 is connected with the planet gear 44 in a meshed mode.

The planet gear 44 includes a second wheel shaft 441 and a second tooth portion 442, a first bearing 443 is disposed between the second wheel shaft 441 and the second tooth portion 442, so as to realize rotatable connection between the second wheel shaft 441 and the second tooth portion 442, the second tooth portion 442 is engaged and connected between the sun gear 43 and the ring gear 421, and the sun gear 43 can drive the second tooth portion 442 to rotate when rotating.

Further, the transmission device 4 further includes a planetary rotating frame 45, the planetary rotating frame 45 is mounted at an end of the plurality of second axles 441, and the plurality of planetary wheels 44 drive the planetary rotating frame 45 to rotate when rotating around the sun wheel 43. Preferably, the second housing 42 is provided with a fixing hole, the planetary rotating frame 45 penetrates through the fixing hole, and the second bearing 46 is arranged between the planetary rotating frame 45 and the fixing hole, so that the planetary rotating frame 45 is rotatably mounted on the second housing 42, and the arrangement of the fixing hole and the second bearing 46 improves the rotation stability of the planetary rotating frame 45.

It should be noted that the operating principle of the transmission device 4 is that when the bevel gear 41 rotates, the sun gear 43 is driven to rotate, the sun gear 43 drives the second tooth 442 of the planet gear 44 to rotate, at this time, the plurality of planet gears 44 revolve around the sun gear 43, the second wheel shaft 441 of the planet gear 44 drives the planet rotating frame 45 to rotate, and due to the arrangement of the first bearing 443 in the planet gear 44, the second wheel shaft 441 does not need to rotate during the revolution of the planet gear 44, and the second wheel shaft 441 is fixedly connected with respect to the planet rotating frame 45, so that the motion stability is improved.

In this embodiment, the planetary rotating frame 45 is used as a system output component of the driving system, and one side of the planetary rotating frame 45, which is far away from the planetary gear 44, is connected to the lifting system through a hollow shaft and a locking disc, so that power output of the bucket elevator is realized. It should be noted that the structure of the lifting system connected to the driving system through the hollow shaft and the locking metal plate is a conventional technical means for those skilled in the art, and will not be described herein.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A drive system, comprising:

a first housing (1) provided with a cavity;

the permanent magnet motor (2) comprises a motor stator (21) and a motor rotor (22) which are coaxial, and the motor stator (21) is fixed on the side wall of the cavity;

the spiral umbrella shaft (3) penetrates through the first shell (1) and the motor rotor (22), the spiral umbrella shaft (3) is fixedly connected with the motor rotor (22), and an umbrella tooth part (31) is arranged at one end of the spiral umbrella shaft (3);

the transmission device (4) comprises a bevel gear (41), and the bevel gear (41) is connected with the bevel gear part (31) in a meshing manner.

2. The drive system according to claim 1, further comprising a backstop (5), wherein an inner ring of the backstop (5) is keyed with an end of the spiral shaft (3) facing away from the umbrella tooth portion (31), and an outer ring of the backstop (5) is fixed on the first housing (1).

3. A drive system according to claim 1, wherein the transmission (4) further comprises a second housing (42), a sun wheel (43) and a plurality of planet wheels (44), the second housing (42) being connected to the first housing (1), the bevel wheel (41), the sun wheel (43) and the planet wheels (44) all being arranged in the second housing (42);

the sun wheel (43) is fixedly connected with the bevel wheel (41), a plurality of planet wheels (44) are arranged on the sun wheel (43) in a surrounding mode, and the sun wheel (43) is in meshed connection with the planet wheels (44); the second shell (42) is provided with an inner gear ring (421), and one side, far away from the sun wheel (43), of the planet wheel (44) is connected to the inner gear ring (421) in a meshed mode.

4. A drive system according to claim 3, characterised in that the sun wheel (43) comprises a first wheel shaft (431) and a first tooth (432), the end of the bevel wheel (41) is provided with a groove, the first wheel shaft (431) extends into the groove, and the first wheel shaft (431) and the groove are connected by a spline or a crow tooth, and the first tooth (432) is in mesh connection with the planet wheel (44).

5. A drive system according to claim 3, characterised in that the planet wheels (44) comprise a second wheel axle (441) and a second toothing (442), a first bearing (443) being arranged between the second wheel axle (441) and the second toothing (442), the second toothing (442) being in meshing connection between the sun wheel (43) and the annulus gear (421).

6. The drive system according to claim 5, characterized in that the transmission (4) further comprises a planetary turret (45), the planetary turret (45) being mounted at the ends of the second plurality of axles (441), the planetary turret (45) being rotated by the plurality of planetary wheels (44) when rotating around the sun wheel (43).

7. The drive system according to claim 6, characterized in that the second housing (42) is provided with a fixing hole through which the planetary turret (45) is arranged, and a second bearing (46) is arranged between the planetary turret (45) and the fixing hole.

8. Drive system according to claim 6, characterized in that the side of the planetary carrier (45) remote from the planet wheels (44) is connected to a hoisting system via a hollow shaft and a locking disc.

9. The drive system according to claim 1, characterized in that the motor stator (21) is fitted with interference on the side wall of the cavity;

the motor rotor (22) is connected to the spiral umbrella shaft (3) in an interference mode.

10. A bucket elevator comprising a drive system according to any one of claims 1 to 9.