WO2019001258A1 - 压缩机与电机的连接结构 - Google Patents

压缩机与电机的连接结构 Download PDF

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Publication number
WO2019001258A1
WO2019001258A1 PCT/CN2018/090724 CN2018090724W WO2019001258A1 WO 2019001258 A1 WO2019001258 A1 WO 2019001258A1 CN 2018090724 W CN2018090724 W CN 2018090724W WO 2019001258 A1 WO2019001258 A1 WO 2019001258A1
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motor
shaft
motor shaft
compressor
bearing
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PCT/CN2018/090724
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English (en)
French (fr)
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陈斌
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阿特拉斯·科普柯(无锡)压缩机有限公司
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Publication of WO2019001258A1 publication Critical patent/WO2019001258A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C29/0071—Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/60—Shafts
    • F04C2240/605—Shaft sleeves or details thereof

Definitions

  • the invention relates to a screw compressor, in particular to a connection structure between a compressor and a motor.
  • the screw air compressor is usually driven by a permanent magnet variable frequency motor, and the drive chain of the compressor and the motor generally adopts a belt type, a coupling drive or a gear transmission.
  • the after-sales service of the drive chain of all permanent magnet inverter compressors on the existing market is complicated. Firstly, the horizontally placed drive motor is removed from the whole machine, and the horizontally placed drive motor is suspended vertically by special tooling, and then The end cover, bearing, stator and rotor are separately removed, and finally the after-sales service can be carried out, resulting in more manpower for after-sales service, increased after-sales service cost, and some customers need a longer service cycle, resulting in lower customer satisfaction. It will also lead to long-term suspension of production.
  • the present invention provides a connection structure between a compressor and a motor, which facilitates quick disassembly of the motor shaft and the compressor head shaft, and meets the requirements of quick after-sales service.
  • a connection structure of a compressor and a motor of the present invention includes a head shaft of a compressor and a motor that drives the rotation of the head shaft, the motor including a motor shaft, a stator, a rotor, and a housing, a stator fixedly mounted on an inner surface of the housing, the rotor being fixed on the motor shaft, the motor further comprising a front end flange, a bearing seat and a rear end cover, wherein the front end flange and the bearing seat are respectively fixed at The two ends of the housing, the rear end cover is fixed on the bearing seat; the front end flange is provided with a central hole through which the motor shaft passes; the head shaft and the motor A taper sleeve is disposed between the shafts, and the taper sleeve is connected to the head shaft by a key, and one end of the motor shaft is provided with a tapered groove that cooperates with the taper sleeve, and the taper sleeve is placed on the
  • the gap between the stator and the rotor is greater than the spacing between the motor shaft and the center hole of the front end flange.
  • the bearing and the bearing housing adopt a transition fit.
  • the front end flange and the bearing seat are respectively bolted to both ends of the housing.
  • the rear end cover is fixed to the bearing housing by bolts.
  • the connecting structure of the compressor and the motor of the invention adopts the connection form of the motor shaft and the screw compressor head shaft taper sleeve, and the special motor front end flange design and the rear end bearing seat design, so that the connection structure of the compressor and the motor is Disassembly and after-sales service have become quick and convenient. While improving after-sales service efficiency and reducing after-sales service costs, it has also greatly satisfied the needs of customers.
  • Fig. 1 is a schematic view showing the connection structure of a compressor and a motor of the present invention.
  • the connection structure of the compressor and the motor of the present invention comprises a head shaft 1 of a compressor and a motor for driving the rotation of the head shaft 1, the motor including a motor shaft 7, a stator 8, and a rotor 10.
  • the stator 8 is fixedly mounted on the inner surface of the housing 9, and the connection manner thereof may be a tight fit, and the rotor 10 is fixed at the
  • the front end flange 5 is provided with a central hole 51 through which the motor shaft 7 passes; the front end flange 5 and the bearing housing 12 are fixed by bolts 6, 12, respectively.
  • the two ends of the housing 9 are fixed to the bearing housing 12 by bolts 15; a taper sleeve 2 is disposed between the head shaft 1 and the motor shaft 7, and the sleeve 2 is Connected to the head shaft 1 by a key 4, one end of the motor shaft 7 is provided with a tapered groove that cooperates with the taper sleeve 2, and the taper sleeve 2 is placed in the tapered groove, the motor
  • the other end of the shaft 7 is connected to the bearing housing 13 via a bearing 14, and the bearing 14 and the bearing housing 13 adopt a transition fit, when the motor shaft 7 needs to be removed, Transition fit bearing 14 can be easily removed from the bearing housing 13.
  • a stud 11 is disposed in the axial direction of the motor shaft 7, and one end of the stud 11 is screwed to the head shaft 1 and the other end is provided with a lock nut 15, and the lock nut 15 is The end of the motor shaft 7 abuts, and the tapered nut of the motor shaft 7 is pressed against the taper sleeve 2 by rotating the lock nut 15, and the torque of the motor passes through the motor shaft 7 and the taper sleeve 2 The frictional force is transmitted to the head shaft 1, and the maximum torque that the motor shaft 7 can transmit can be increased by increasing the preload of the stud 11.
  • the gap between the stator 8 and the rotor 10 is larger than the distance between the motor shaft 7 and the center hole 51 of the front end flange 5.
  • the center hole of the front end flange 5 51 can hold the motor shaft 7 to prevent the rotor 10 and the stator 8 from brooming, and destroy the insulating layer of the winding.
  • the front end flange 5 is bolted to the transition flange 3.
  • the transition flange 3 is disposed between the compressor and the motor.
  • the rear end cover 16 is fixed to the bearing housing 13 by bolts 17 to function as a closed inner cavity of the motor, and can also axially position the bearing 14.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

一种压缩机与电机的连接结构，包括压缩机的机头轴（1）和驱动机头轴（1）旋转的电机，电机包括电机轴（7）、定子（8）、转子（10）、壳体（9）、前端法兰（5）、轴承座（12）和后端盖（16），前端法兰（5）上开设有中心孔（51），电机轴（7）穿过中心孔（51）；机头轴（1）和电机轴（7）之间设置有锥套（2），锥套（2）与机头轴（1）通过键（4）连接，电机轴（7）的一端开设有与锥套（2）配合的锥形槽，锥套（2）置于锥形槽中，电机轴（7）的另一端通过轴承（14）与轴承座（12）连接；电机轴（7）的轴向贯穿设置有一螺柱（11），螺柱（11）的一端与机头轴（1）螺纹连接，另一端设有锁紧螺母（15），锁紧螺母（15）与电机轴（7）的端部抵接，该压缩机与电机的连接结构具有便于拆卸的优点。

Description

压缩机与电机的连接结构 技术领域
本发明涉及一种螺杆压缩机，特别涉及一种压缩机与电机的连接结构。
背景技术
目前螺杆空气压缩机通常采用永磁变频电机驱动，压缩机与电机的驱动链一般采用皮带式、联轴器传动或齿轮传动等方式。随着国内市场永磁变频压缩机的流行，永磁变频压缩机的售后服务越来越受到关注。
现有市场上的所有永磁变频压缩机的驱动链的售后服务都比较复杂，首先需要把水平放置的驱动电机脱离整机，并使用特殊工装把水平放置的驱动电机吊为竖直，然后依次将端盖、轴承、定子、转子分别拆下，最后才能进行售后服务，导致售后服务需要较多的人力，售后服务成本增加，有的客户需要的服务周期较长，导致客户满意度降低，严重的还会导致客户长期停产。
因此研发一种新的永磁变频压缩机驱动链结构形式，以满足快捷的售后服务变得尤为重要。
发明内容
为解决上述问题，本发明提供一种压缩机与电机的连接结构，方便电机轴与压缩机机头轴的快速拆卸，满足快捷的售后服务需求。
为实现上述目的，本发明的压缩机与电机的连接结构，包括压缩机的机头轴和驱动所述机头轴旋转的电机，所述电机包括电机轴、定子、转子和壳体，所述定子固定安装在所述壳体的内表面，所述转子固定在所述电机轴上，所述电机还包括前端法兰、轴承座和后端盖，所述前端法兰和轴承座分别固定在所述壳体的两端，所述后端盖固定在所述轴承座上；所述前端法兰上开设有中心孔，所述电机轴穿过所述中心孔；所述机头轴和电机轴之间设置有锥套，所述锥套与所述机头轴通过键连接，所述电机轴的一端开设有与所述锥套配合的锥形槽，所述锥套置于所述锥形槽中，所述电机轴的另一端通过轴承与所述轴承座连接；所述电机轴的轴向贯穿设置有一螺柱，所述螺柱的一端与所述机头轴螺纹连接，另一端设有锁紧螺母，所述锁紧螺母与所述电机轴的端部抵接。
优选地，所述定子与转子之间的间隙大于所述电机轴与前端法兰的中心孔之间的间距。
优选地，所述轴承与所述轴承座采用过渡配合。
优选地，所述前端法兰和轴承座分别螺栓固定在所述壳体的两端。
优选地，所述后端盖通过螺栓固定在所述轴承座上。
本发明的压缩机与电机的连接结构，采用电机轴与螺杆压缩机机头轴锥套连接形式，以及特殊的电机前端法兰设计和后端的轴承座设计，使得压缩机与电机的连接结构的拆卸以及售后服务变得快捷方便，在提高售后服务效率，降低售后服务成本的同时，也大大满足了客户的需求。
附图说明
参照附图，本发明的公开内容将更加显然。应当了解，这些附图仅是示意性的，未按比例绘制也并非意在限制本发明的范围。图中：
图1为本发明的压缩机与电机的连接结构的示意图。
具体实施方式
下面参照附图详细地说明本发明的具体实施方式。
如图1所示，本发明的压缩机与电机的连接结构，包括压缩机的机头轴1和驱动所述机头轴1旋转的电机，所述电机包括电机轴7、定子8、转子10、前端法兰5、壳体9、轴承座12和后端盖16，所述定子8固定安装在所述壳体9的内表面，其连接方式可以采用紧配合，所述转子10固定在所述电机轴7上；所述前端法兰5上开设有中心孔51，所述电机轴7穿过所述中心孔51；所述前端法兰5和轴承座12分别通过螺栓6、12固定在所述壳体9的两端，所述后端盖16通过螺栓15固定在所述轴承座12上；所述机头轴1和电机轴7之间设置有锥套2，所述锥套2与所述机头轴1通过键4连接，所述电机轴7的一端开设有与所述锥套2配合的锥形槽，所述锥套2置于所述锥形槽中，所述电机轴7的另一端通过轴承14与所述轴承座13连接，所述轴承14与所述轴承座13采用过渡配合，当需要拆下电机轴7时，采用过渡配合的轴承14可以很容易地从轴承座13上拆下。所述电机轴7的轴向贯穿设置有一螺柱11，所述螺柱11的一端与所述机头轴1螺纹连接，另一端设有锁紧螺母15，所述锁紧螺母15与所述电机轴7的端部抵接，通过旋转所述锁紧螺母15，从而将所述电机轴7的锥形槽与所述锥套2压紧，电机的扭矩通过电机轴7与锥套2之间的摩擦力传递给机头轴 1，且可通过增大螺柱11的预紧力来增加电机轴7所能传递的最大扭矩。
所述定子8与转子10之间的间隙大于所述电机轴7与前端法兰5的中心孔51之间的间距，当电机轴7与锥套2脱开时，前端法兰5的中心孔51可将电机轴7托住，防止转子10与定子8扫膛，破坏绕组的绝缘层。
前端法兰5通过螺栓连接于过渡法兰3上。过渡法兰3设置在压缩机与电机之间。
所述后端盖16通过螺栓17固定在所述轴承座13上，起到密闭电机内腔的作用，同时还可以对所述轴承14起到轴向定位作用。
当需要拆卸电机时，只需将后端盖16拆掉后采用拉马对电机轴7进行拆卸。松开锁紧螺母15，将拉马的顶杆顶住螺柱11，此时电机轴7向右轻微移动一段距离，锥套2就可与电机轴7脱开，前端法兰5的中心孔可将电机轴7及时托住，从而实现电机轴7与机头轴1的快速脱开。实现了电机轴7在横置情况下的快速拆卸，提高了售后服务效率，节省了时间，减少了售后服务成本，极大地满足了客户的需求。
如上所述，参照附图对本发明的示例性具体实施方式进行了详细的说明。应当了解，本发明并非意在使这些具体细节来构成对本发明保护范围的限制。在不背离根据本发明的精神和范围的情况下，可对示例性具体实施方式的结构和特征进行等同或类似的改变，这些改变将也落在本发明所附的权利要求书所确定的保护范围内。

Claims (5)

  1. 一种压缩机与电机的连接结构，包括压缩机的机头轴和驱动所述机头轴旋转的电机，所述电机包括电机轴、定子、转子和壳体，所述定子固定安装在所述壳体的内表面，所述转子固定在所述电机轴上，其特征在于，所述电机还包括前端法兰、轴承座和后端盖，
    所述前端法兰和轴承座分别固定在所述壳体的两端，所述后端盖固定在所述轴承座上；
    所述前端法兰上开设有中心孔，所述电机轴穿过所述中心孔；
    所述机头轴和电机轴之间设置有锥套，所述锥套与所述机头轴通过键连接，所述电机轴的一端开设有与所述锥套配合的锥形槽，所述锥套置于所述锥形槽中，所述电机轴的另一端通过轴承与所述轴承座连接；
    所述电机轴的轴向贯穿设置有一螺柱，所述螺柱的一端与所述机头轴螺纹连接，另一端设有锁紧螺母，所述锁紧螺母与所述电机轴的端部抵接。
  2. 如权利要求1所述的压缩机与电机的连接结构，其特征在于，所述定子与转子之间的间隙大于所述电机轴与前端法兰的中心孔之间的间距。
  3. 如权利要求1所述的压缩机与电机的连接结构，其特征在于，所述轴承与所述轴承座采用过渡配合。
  4. 如权利要求1所述的压缩机与电机的连接结构，其特征在于，所述前端法兰和轴承座分别螺栓固定在所述壳体的两端。
  5. 如权利要求1所述的压缩机与电机的连接结构，其特征在于，所述后端盖通过螺栓固定在所述轴承座上。
PCT/CN2018/090724 2017-06-30 2018-06-12 压缩机与电机的连接结构 WO2019001258A1 (zh)

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CN107191378A (zh) * 2017-06-30 2017-09-22 阿特拉斯·科普柯(无锡)压缩机有限公司 压缩机与电机的连接结构
CN206988114U (zh) * 2017-06-30 2018-02-09 阿特拉斯·科普柯(无锡)压缩机有限公司 压缩机与电机的连接结构

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