WO2020156094A1 - Moteur électrique à arbre creux - Google Patents

Moteur électrique à arbre creux Download PDF

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Publication number
WO2020156094A1
WO2020156094A1 PCT/CN2020/071319 CN2020071319W WO2020156094A1 WO 2020156094 A1 WO2020156094 A1 WO 2020156094A1 CN 2020071319 W CN2020071319 W CN 2020071319W WO 2020156094 A1 WO2020156094 A1 WO 2020156094A1
Authority
WO
WIPO (PCT)
Prior art keywords
hollow shaft
connecting piece
flange
key
motor according
Prior art date
Application number
PCT/CN2020/071319
Other languages
English (en)
Chinese (zh)
Inventor
王庆龄
Original Assignee
北京大圣格尔冶金设备有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京大圣格尔冶金设备有限公司 filed Critical 北京大圣格尔冶金设备有限公司
Publication of WO2020156094A1 publication Critical patent/WO2020156094A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/02—Shafts; Axles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
    • F16C3/06—Crankshafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
    • F16D3/06—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters

Definitions

  • the invention relates to the field of large excavators for open-pit mines, in particular to a hollow shaft motor.
  • the output end of the existing hollow shaft motor on the market is directly connected to the equipment for transmission.
  • the hollow shaft is not easy to process, and the output end of the hollow shaft motor is very easy to wear. Because the output end of the hollow shaft motor is made of one piece with the motor, installation and disassembly , It is difficult to replace and repair, and the maintenance and use cost is relatively high.
  • the purpose of the present invention is to provide a hollow shaft motor to solve the problems in the prior art that the hollow shaft is difficult to process, the output end of the hollow shaft is easy to wear, and the installation, disassembly, replacement, and maintenance are difficult.
  • the present invention proposes a hollow shaft motor, which includes a rotor, a stator, a housing and a hollow shaft.
  • the stator is sleeved outside the rotor and fixed in the housing, and the rotor is sleeved in the housing.
  • the hollow shaft is externally and fixedly connected to the hollow shaft, and at least one end of the hollow shaft is detachably connected with a connector for connecting load equipment.
  • the present invention connects the transmission by installing a detachable connector on the hollow shaft.
  • the hollow shaft is easy to process, which greatly reduces the processing difficulty and cost of the hollow shaft, and the hollow shaft is not easy to wear.
  • the hollow shaft is connected for transmission through the connector. Installation and disassembly are more convenient, maintenance is convenient, and the processing cost is low;
  • the hollow shaft motor of the present invention can be directly connected to the load equipment without the transmission chain reduction mechanism, and the connection structure is simple.
  • Figure 1 is a half cross-sectional view of the first embodiment of the hollow shaft motor of the present invention
  • Figure 2 is a side view of the connection between the hollow shaft and the connector in Figure 1;
  • Figure 3 is a cross-sectional view along line A-A in Figure 2;
  • Figure 4 is a half cross-sectional view of a second embodiment of the hollow shaft motor of the present invention.
  • Figure 5 is a half cross-sectional view of the third embodiment of the hollow shaft motor of the present invention.
  • FIG. 6 is a schematic diagram of the hollow shaft and the connecting member in the fourth embodiment of the hollow shaft motor of the present invention.
  • Figure 7 is a front view of the connecting key
  • Fig. 8 is a top view of the connecting key in Fig. 7.
  • the present invention provides a hollow shaft motor, which includes a rotor 1, a stator 6, a housing 7, and a hollow shaft 3.
  • the stator 6 is sleeved outside the rotor 1 and fixed in the housing 7.
  • the rotor 1 is sleeved outside the hollow shaft 3 and is fixedly connected to the hollow shaft 3.
  • the stator 6 can generate a rotating magnetic field after being energized.
  • the rotor 1 can drive the hollow shaft 3 to rotate together when it rotates.
  • At least one end of the hollow shaft 3 is detachably connected with a connector 2 for connecting load equipment that can rotate coaxially with it.
  • the hollow shaft 3 passes through The connecting piece 2 is connected with the load equipment, rather than directly connected with the load equipment.
  • a connecting piece 2 is provided at at least one end of the hollow shaft 3, and the hollow shaft 3 is connected to the load device through the connecting piece 2, instead of directly connecting the hollow shaft 3 to the load device.
  • the hollow shaft 3 is easy to process and solves the problem
  • the hollow shaft is too long and difficult to process, which greatly reduces the processing difficulty and processing cost of the hollow shaft.
  • it can avoid the wear of the hollow shaft 3.
  • connecting piece 2 and the hollow shaft 3 are connected by a detachable connection, the connecting piece 2 After the wear occurs, disassemble the connecting piece 2 and replace it with a new connecting piece 2, which is convenient for disassembly and maintenance, and reduces maintenance costs; in addition, the hollow shaft 3 is connected for transmission through the connecting piece 2, which is more convenient for installation and disassembly. Axis 3 is easy to process.
  • the two ends of the hollow shaft 3 are detachably connected to the connecting piece 2 for connecting load equipment that can rotate coaxially and synchronously with the hollow shaft 3, so the hollow shaft 3 can output torque in both directions.
  • an inner spline groove 4 is provided on the inner side wall of the connecting member 2 to connect with the load equipment through the spline.
  • bearings 5 are respectively provided between the outer side walls of the two ends of the hollow shaft 3 and the housing 7.
  • the hollow shaft 3 is in an interference fit (tight fit) with the bearing 5.
  • the housing 7 supports the hollow shaft 3 through the bearings 5, and the hollow shaft 3 passes through the bearings. 5 is rotatably arranged on the housing 7.
  • the bore diameter of the hollow shaft 3 is 100mm-800mm, that is, the hollow shaft 3 is a large bore motor shaft, for example, the bore diameter of the hollow shaft 3 is 100mm, 200mm, 300mm, 400mm, 500mm, 600mm, 700mm, 800mm.
  • the connecting piece 2 is a flange-shaped sleeve, and the connecting piece 2 includes a sleeve 21 and a flange convex connected to the outside of one end of the sleeve 21
  • the flange 22, the flange flange 22 is located outside the hollow shaft 3, the end surface of the flange flange 22 is against the end surface of the hollow shaft 3, the flange flange 22 and the end surface of the hollow shaft 3 are positioned by the positioning pin 9 and fixed by the screw 8. Therefore, it is very convenient to disassemble and assemble the connecting piece 2 and the hollow shaft 3, the sleeve 21 is nested in the hollow shaft 3, and the inner spline groove 4 is provided on the inner side wall of the sleeve 21.
  • the connecting piece 2 is a flange-shaped sleeve.
  • the connecting piece 2 includes a sleeve 21 and a flange flange 22 connected to the outside of one end of the sleeve 21.
  • the rim 22 is located outside the hollow shaft 3, the end face of the flange 22 of the connecting piece 2 abuts the end face of the hollow shaft 3, the sleeve 21 of the connecting piece 2 is nested in the hollow shaft 3, and the sleeve 21 is keyed to the hollow shaft 3.
  • connection such as but not limited to single key, double key or multiple key, is very convenient for disassembly and assembly of the connecting piece 2 and the hollow shaft 3; the inner spline groove 4 is provided on the inner side wall of the sleeve 21.
  • the connecting piece 2 is a stepped sleeve.
  • the connecting piece 2 includes a cylinder 23 and a boss 24 connected to the inner side of one end of the cylinder 23.
  • the connecting piece 2 is located in the hollow. Outside the shaft 3, the end of the boss 24 of the connecting piece 2 is butted with the end of the hollow shaft 3; the inner spline groove 4 is provided on the inner side wall of the cylinder 23.
  • boss 24 and the end surface of the hollow shaft 3 are connected by bolts (not shown in the figure), which is very convenient for disassembly and assembly.
  • the connecting member 2 is cylindrical, the connecting member 2 penetrates the hollow shaft 3, and the connecting member 2 and the hollow shaft 3 are connected by a key.
  • the connecting member 2 and the hollow shaft 3 are connected by a cylindrical connecting key 10, one end of the connecting key 10 has a connecting ear 11, and the outer side wall of the connecting member 2 is recessed There is a keyway 25.
  • the side wall of the hollow shaft 3 is provided with a key hole 31 corresponding to the keyway 25 of the connecting piece 2 and communicated with it.
  • the key hole 31 of the hollow shaft 3 is a stepped hole.
  • the connecting key 10 passes through the hollow shaft 3
  • the key hole 31 extends into the key groove 25 of the connecting piece 2.
  • the connecting lug 11 is connected with the step in the key hole 31 of the hollow shaft 3 by bolts, which is very convenient for disassembly and assembly.
  • the top surface of the connecting key 10 is not higher than the hollow shaft 3.
  • the outer wall so as not to affect the installation of the rotor 1.
  • the present invention is not limited to this.
  • the connecting member 2 and the hollow shaft 3 can also be connected by a common key, for example, by a spline.
  • the two ends of the connecting member 2 respectively abut against a retaining ring 12, which is embedded in the inner side wall of the hollow shaft 3.
  • the retaining ring 12 can position the connecting member 2 in the axial direction.
  • connecting member 2 in the present invention is not limited to the structure described in the above four specific embodiments, and may also be other conventional structures that can connect the hollow shaft 3 to the load device.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

La présente invention concerne un moteur électrique à arbre creux, comprenant un rotor (1), un stator (6), un boîtier (7), et un arbre creux (3) ; le stator (6) est emmanché à l'extérieur du rotor (1) et fixé dans le boîtier (7) ; le rotor (1) est emmanché à l'extérieur de l'arbre creux (3) et relié à demeure à l'arbre creux (3) ; au moins une extrémité de l'arbre creux (3) est reliée de façon détachable à un élément de liaison (2) utilisé pour être relié à un dispositif de charge. Dans la présente invention, l'arbre creux est relié au dispositif de charge au moyen de l'élément de liaison plutôt que de relier directement l'arbre creux au dispositif de charge, ainsi l'usure sur l'arbre creux est évitée ; étant donné que l'élément de liaison et l'arbre creux sont reliés au moyen d'une liaison détachable, après que l'élément de liaison s'est usé, on doit simplement retirer l'élément de liaison et le remplacer par un nouveau ; le démontage et l'entretien sont pratiques, réduisant les coûts d'entretien.
PCT/CN2020/071319 2019-01-29 2020-01-10 Moteur électrique à arbre creux WO2020156094A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910085861.7A CN109768664B (zh) 2019-01-29 2019-01-29 一种空心轴电机
CN201910085861.7 2019-01-29

Publications (1)

Publication Number Publication Date
WO2020156094A1 true WO2020156094A1 (fr) 2020-08-06

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Application Number Title Priority Date Filing Date
PCT/CN2020/071319 WO2020156094A1 (fr) 2019-01-29 2020-01-10 Moteur électrique à arbre creux

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CN (1) CN109768664B (fr)
WO (1) WO2020156094A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109768664B (zh) * 2019-01-29 2024-06-25 北京大圣格尔冶金设备有限公司 一种空心轴电机
CN110601432A (zh) * 2019-08-07 2019-12-20 中山亚力菲自动化设备有限公司 一种空心轴、电机及空心轴的制作方法
CN115263897A (zh) * 2022-06-17 2022-11-01 中国第一汽车股份有限公司 一种组合式空心电机轴及其制造方法

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JP2002265168A (ja) * 2001-03-12 2002-09-18 Nippon Elevator Mfg Co Ltd エレベータ
CN202334219U (zh) * 2011-10-31 2012-07-11 郑州新大方电力能源有限公司 直驱式的螺杆泵永磁同步电机
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CN204068541U (zh) * 2014-08-22 2014-12-31 浙江琦星电子有限公司 一种包缝机上用的电机
CN109768664A (zh) * 2019-01-29 2019-05-17 北京大圣格尔冶金设备有限公司 一种空心轴电机

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CN204089452U (zh) * 2014-09-09 2015-01-07 台州欧非机电科技有限公司 输出件自由组合电机
CN205319877U (zh) * 2015-12-14 2016-06-15 安徽威能电机有限公司 电机转子装配辅具
CN207315890U (zh) * 2017-11-01 2018-05-04 利欧集团浙江泵业有限公司 一种水泵泵轴与电机轴的连接结构
CN107786029A (zh) * 2017-12-06 2018-03-09 李彦召 用于电机的带传动键的空心转轴及加工方法
CN207835267U (zh) * 2018-02-01 2018-09-07 北京佩特来电机驱动技术有限公司 一种电机及其转子结构
CN207989574U (zh) * 2018-03-19 2018-10-19 贵州航天林泉电机有限公司 一种测功机联轴节
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Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002265168A (ja) * 2001-03-12 2002-09-18 Nippon Elevator Mfg Co Ltd エレベータ
CN202334219U (zh) * 2011-10-31 2012-07-11 郑州新大方电力能源有限公司 直驱式的螺杆泵永磁同步电机
CN102943795A (zh) * 2012-11-16 2013-02-27 无锡桥联数控机床有限公司 拼接定位平键
CN203984152U (zh) * 2014-04-04 2014-12-03 上海电姆机器人有限公司 一种集成减速器和反馈控制系统的模块化伺服电机
CN204068541U (zh) * 2014-08-22 2014-12-31 浙江琦星电子有限公司 一种包缝机上用的电机
CN109768664A (zh) * 2019-01-29 2019-05-17 北京大圣格尔冶金设备有限公司 一种空心轴电机

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CN109768664A (zh) 2019-05-17
CN109768664B (zh) 2024-06-25

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