WO2015184564A1 - F-model electric speed regulation disc-type magnetic coupler having ball-screw - Google Patents

F-model electric speed regulation disc-type magnetic coupler having ball-screw Download PDF

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Publication number
WO2015184564A1
WO2015184564A1 PCT/CN2014/000554 CN2014000554W WO2015184564A1 WO 2015184564 A1 WO2015184564 A1 WO 2015184564A1 CN 2014000554 W CN2014000554 W CN 2014000554W WO 2015184564 A1 WO2015184564 A1 WO 2015184564A1
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speed
rotor
ball screw
motor
screw
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PCT/CN2014/000554
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French (fr)
Chinese (zh)
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李启飞
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李启飞
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Priority to PCT/CN2014/000554 priority Critical patent/WO2015184564A1/en
Publication of WO2015184564A1 publication Critical patent/WO2015184564A1/en

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K51/00Dynamo-electric gears, i.e. dynamo-electric means for transmitting mechanical power from a driving shaft to a driven shaft and comprising structurally interrelated motor and generator parts

Abstract

An F-model electric speed regulation disc-type magnetic coupler having a ball-screw, having two series: air-cooled F-model electric speed regulation disc-type magnetic coupler having a ball screw, and liquid-cooled F-model electric speed regulation disc-type magnetic coupler having a ball screw. A speed regulation mechanism (3) having an internal rotor motor and a ball-screw is used to regulate the distance between sensor discs (1, 5) of the magnetic coupler and magnetic fixing discs (2, 4), thereby enabling economically viable, energy-conserving speed regulation for transmission equipment.

Description

F型滚珠丝杠电动调速盘式磁力耦合器 领域  F-type ball screw electric speed disc type magnetic coupler
动力传动、 节能减排、 动设备、 磁力驱动。 背景  Power transmission, energy saving, dynamic equipment, magnetic drive. Background
从人类利用地磁驱动发明罗盘开始说, 磁场能量的利用研究便一直没有停止过。 伴随着现 代磁学理论的发展, 磁力驱动产品在工业中的应用便层出不穷, 磁力泵、 磁力轴承、 磁力耦 合器、 磁力齿轮等等。 限于磁性材料的制约, 磁力驱动技术发展缓慢, 直到 1983年, 中国发  Starting from the use of geomagnetically driven invention compasses by humans, the study of the use of magnetic field energy has not stopped. With the development of modern magnetic theory, the application of magnetic drive products in the industry is endless, such as magnetic pumps, magnetic bearings, magnetic couplings, magnetic gears and so on. Limited to the constraints of magnetic materials, magnetic drive technology developed slowly, until 1983, China issued
 Book
明了高性能永磁材料钕铁硼, 磁力驱动产品才得到快速发展应用。 The high-performance permanent magnet material NdFeB has been developed, and the magnetic drive products have been rapidly developed and applied.
磁力耦合器从 力泵等磁力驱动产品中独立出来作为单独的分支发展以来, 出现了形形 色色的产品, 但都局限于结构方面的原因, 只能局限于中小功率、 中小扭矩区间的动设备动 力传动应用中,而且价格昂贵 像火电厂的一次风机(6000KW, 96r/min)、二次风机(4550KW, 1495r/min)、 碎煤机(1200KW, 490r/min) 和钢厂、 矿场的大型风机等动设备, 现有技术和 产品都无法满足实际应用需求。  Since the magnetic coupler has been separated from the magnetic drive products such as the force pump as a separate branch, various products have appeared, but they are limited to the structural reasons, and can only be limited to the dynamic power transmission of the medium and small power, small and medium torque range. In the application, and expensive, it is like a primary fan (6000KW, 96r/min), a secondary fan (4550KW, 1495r/min), a coal crusher (1200KW, 490r/min), and a large fan of a steel plant and a mine. Isodynamic equipment, existing technology and products can not meet the actual application needs.
节能减排是目前迫切需求。 动设备节能, 目前比较高效的有变频调速节能和沟槽凸轮机 构调速磁力耦合器调速节能。 变频器使用寿命较短, 环境适应能力差, 占地空间大, 维护需 求高, 高压变频器故障率则更高, 可靠性差。 目前已进行应用的沟槽凸轮机构调速磁耦 (筒 式和盘式) 因结构原因应用范围有限, 且价格昂贵。 液冷沟槽凸轮机构调速盘式磁耦只能勉 强应用到 2500KW以下中等转速的动设备中,风冷沟槽凸轮机构调速盘式磁耦只能勉强应用到 350KW以下中等转速的动设备中。 筒式磁耦则更差, 液冷调速产品只能勉强应用到 800KW以 下中等转速的动设备中, 且安全可靠性不高。  Energy conservation and emission reduction are urgent needs. Energy-saving equipment, currently more efficient, variable frequency speed control energy-saving and grooved cam mechanism speed magnetic coupling speed control energy saving. The inverter has a short service life, poor environmental adaptability, large floor space and high maintenance requirements. The high-voltage inverter has a higher failure rate and poor reliability. The grooved cam mechanism variable speed magnetic coupling (cylinder and disc type) that has been applied at present is limited in application range due to structural reasons and is expensive. The liquid-cooled groove cam mechanism speed-regulating magnetic coupling can only be applied to the medium-speed dynamic equipment below 2500KW. The air-cooling groove cam mechanism speed-regulating magnetic coupling can only be applied to the medium-speed dynamic equipment below 350KW. in. The barrel magnetic coupling is even worse. The liquid-cooled speed control product can only be applied to the medium-speed moving equipment below 800KW, and the safety and reliability are not high.
发明内容 Summary of the invention
本发明重在找到一种盘式磁耦调速的技术方法,伴随着这种技术方法而引伸出两大系列 F 型滚珠丝杠电动调速盘式磁力耦合器——风冷 F型滚珠丝杠电动调速盘式磁耦 (FTF系列)、 液冷 F型滚珠丝杠电动调速盘式磁耦 (YTF系列)。  The invention focuses on finding a technical method for disc-type magnetic coupling speed regulation, and along with this technical method, two series of F-type ball screw electric speed-regulating disc type magnetic couplers-air-cooled F-type ball wire are introduced. Bar electric speed disc type magnetic coupling (FTF series), liquid cooling F type ball screw electric speed disc type magnetic coupling (YTF series).
附图说明 图 1为风冷 F型滚珠丝杠电动调速盘式磁耦 (FTF系列), 图 11为液冷 F型滚珠丝杠电动 调速盘式磁耦(YTF系列)。 DRAWINGS Figure 1 shows the air-cooled F-type ball screw electric speed-disc type magnetic coupling (FTF series), and Figure 11 shows the liquid-cooled F-type ball screw electric speed-regulating magnetic coupling (YTF series).
F型滚珠丝杠电动调速盘式磁耦, 都包含如下几个部分: 图中标号 1和 5为感应盘, 2和 4为磁块固定盘, 3为滚珠丝杠调速机构, 6为电动调速专用高速回转接头, 7为电机定子, 8为电机转子, 9为同步盘, 10为胀套, 11为中心传动轴, 19为支架, 23为法兰轴套。  F-type ball screw electric speed disc type magnetic coupling, including the following parts: Figure 1 and 5 are induction discs, 2 and 4 are magnetic block fixed discs, 3 is ball screw speed governing mechanism, 6 is High-speed rotary joint for electric speed regulation, 7 is motor stator, 8 is motor rotor, 9 is synchronous disk, 10 is expansion sleeve, 11 is center transmission shaft, 19 is bracket, 23 is flange sleeve.
两大系列 F型滚珠丝杠电动调速盘式磁耦中, 所有的感应盘由限位螺栓联结组成外转子, 所有的磁块固定盘串联在中心传动轴上, 和内转子电机外置滚珠丝杠调速机构一起组成内转 子。 电动调速专用高速回转接头的内转子和电机定子同步转动, 相对静止, 电动调速专用高 速回转接头的外转子和支架固定保持静止。 电动调速专用高速回转接头的外转子由双向开关 连接外部电源。 双向开关控制进入电机的电流方向, 从而改变电机内转子与中心传动轴的相 对转向。 电机内转子带动丝杠转动, 丝杠转动, 丝杠螺母(和磁块固定袅固定在一起)沿轴 向移动, 从而改变磁块固定盘和感应盘之间的距离(磁场耦合间隙), 以达到调速节能的目的 (磁场耦合间隙的变化, 将导致磁耦内外转子转差的变化, 也就是输入输出转速的变化)。  In the two series of F-type ball screw electric speed disc type magnetic couplings, all the induction discs are connected by limit bolts to form the outer rotor, all the magnet block fixed discs are connected in series on the central drive shaft, and the inner rotor motor has external balls. The screw governor mechanism consists of a μ to form the inner rotor. The inner rotor of the high-speed rotary joint for electric speed regulation and the stator of the motor rotate synchronously, and are relatively stationary. The outer rotor and the bracket of the high-speed rotary joint for electric speed regulation are fixed and kept stationary. The outer rotor of the high-speed rotary joint for electric speed control is connected to the external power supply by a bidirectional switch. The bidirectional switch controls the direction of current flow into the motor, thereby changing the relative steering of the inner rotor and the central drive shaft. The inner rotor of the motor drives the lead screw to rotate, the lead screw rotates, and the screw nut (and the fixed block of the magnetic block fixed together) moves in the axial direction, thereby changing the distance between the fixed block of the magnetic block and the sensing disk (magnetic field coupling gap), To achieve the purpose of speed regulation and energy saving (the change of the magnetic field coupling gap will lead to the change of the inner and outer rotor slip of the magnetic coupling, that is, the change of input and output speed).
图 2所示为 H向视图。  Figure 2 shows the H-direction view.
图 3所示为 A- A剖视, 清楚表达出了三根同步杆的位置。  Figure 3 shows the A-A cross-section, clearly showing the position of the three sync bars.
图 4所示为磁块固定盘 2,清楚表达出了动力传动的方式一一半轴, 同时示出了磁块的分 布情况。  Figure 4 shows the magnetic block fixing plate 2, which clearly shows the half-axis of the power transmission mode, and shows the distribution of the magnetic block.
图 5所示为磁块固定盘 4, 其不能直接和中心传动轴 11进行动力传动, 但可沿中心传动 轴 11滑动,磁块固定盘 4依靠三根同步杆 3-3来进行传动联接,同时示出了磁块的分布情况。  Figure 5 shows the magnetic block fixing plate 4, which cannot be directly driven by the central transmission shaft 11, but can be slid along the central transmission shaft 11, and the magnetic block fixing plate 4 is driven and coupled by means of three synchronous rods 3-3. The distribution of the magnetic blocks is shown.
图 6为内转子电机外置滚珠丝杠调速机构, 限位挡圈 3-1用来保证同步杆 3-3不会发生 轴向窜动, 3- 2为微调弹簧, 3- 4为丝杠螺母, 3- 5为丝杠, 3-8为同步杆保持架。 标号 7为 电机定子(外表面有槽用来引出电源线), 8为电机转子, 同步盘 9和胀套 10保证电机定子 7 和中心传动轴 11同步转动(相对静止), 电机转子 8和丝杠 3-5用紧定螺钉 13固定在一起, 同步转动。 滚珠丝杠和电机均可由专业厂家批量生产。  Figure 6 shows the external ball screw speed governing mechanism of the inner rotor motor. The limit retaining ring 3-1 is used to ensure that the synchronous rod 3-3 does not axially move. 3- 2 is a fine-tuning spring, and 3- 4 is a wire. The lever nut, 3- 5 is the lead screw, and 3-8 is the synchronous rod holder. 7 is the stator of the motor (the outer surface has a groove for drawing the power line), 8 is the rotor of the motor, and the synchronous disk 9 and the expansion sleeve 10 ensure that the motor stator 7 and the central transmission shaft 11 rotate synchronously (relatively stationary), the rotor 8 and the wire of the motor The bars 3-5 are fixed together by the set screws 13 and are rotated in synchronization. Ball screws and motors can be mass produced by professional manufacturers.
图 7、 图 8、 图 9、 图 10所示为电动调速专用高速回转接头, 采用模块化串联结构, 可串 联任意通道, 图 7、 图 8中所示为三通道, 其内转子由螺栓 6- 29联结各部分, 然后和回转接 头的外转子装配组成一个整体, 再用定位螺钉固定于电机定子上, 其内转子和电机定子同步 转动, 其外转子静止不动, 以连接外部电源。两端密封环 6-20、 6- 21可采用碳化钨、石墨等 材料, 中间有电线进出部分的 6-5、 6-7、 6-8、 6-24、 6-25可采用电绝缘材料, 6- 22采用电 接触材料, 6-23采用电绝缘材料镶嵌电接触材料的组合结构, 6- 14为弹簧, 用来平衡接触压 力,弹簧处的导向销 6-15对弹簧起导向限位作用,防止高速回转时弹簧在离心力作用下失效。 图 12、 图 13所示为液冷 F型滚珠丝杠电动调速盘式磁耦(YTF系列)外壳与内部的高速 回转密封组件, 密封环 36-3、 36-4、 36-6、 36-7、 41-3、 41-4、 41-6、 41- 7为动密封, 根据 冷却液的不同可选用碳化钨、石墨等材料, 弹簧 36-11、 41- 11用来补偿密封环的磨损, 平衡 密封压力, 弹簧处的导向铕 36-2、 41- 2对弹簧起导向限位作用, 防止高速回转时弹簧在离心 力作用下失效, 定位销 36 1、 36-10、 41-1、 41-10与导向销 36-2、 41-2组合起定位作用, 36-5、 36-8、 36-9、 41-5、 41-8、 41 - 9为静密封, 用 0形圈即可。 Figure 7, Figure 8, Figure 9, and Figure 10 show the high-speed rotary joint for electric speed control. It adopts modular series structure and can connect any channel in series. Figure 7 and Figure 8 show three channels. The inner rotor is made of bolts. 6- 29 joins the parts, and then assembles with the outer rotor of the swivel joint to form a whole, and then fixes it to the stator of the motor with the set screw. The inner rotor and the motor stator rotate synchronously, and the outer rotor is stationary to connect the external power supply. The sealing rings 6-20, 6-21 at both ends can be made of tungsten carbide, graphite, etc., and the 6-5, 6-7, 6-8, 6-24, 6-25 with wires in and out of the wire can be electrically insulated. 6- 22 is made of electrical contact material, 6-23 is a combination of electrically insulating materials embedded with electrical contact materials, 6-14 is spring, used to balance contact pressure Force, the guide pin 6-15 at the spring guides the spring to prevent the spring from failing under the centrifugal force during high-speed rotation. Figure 12 and Figure 13 show the liquid-cooled F-type ball screw electric speed disc type magnetic coupling (YTF series) housing and internal high-speed rotary seal assembly, sealing rings 36-3, 36-4, 36-6, 36 -7, 41-3, 41-4, 41-6, 41-7 are dynamic seals. Depending on the coolant, tungsten carbide, graphite and other materials can be used. Springs 36-11 and 41-11 are used to compensate the seal ring. Wear, balance the sealing pressure, the guides 铕36-2, 41-2 at the spring guide the spring to prevent the spring from failing under the centrifugal force during the high-speed rotation, the positioning pins 36 1 , 36-10, 41-1, 41-10 is combined with the guide pins 36-2, 41-2 for positioning, 36-5, 36-8, 36-9, 41-5, 41-8, 41 - 9 are static seals, with 0-rings can.
图 14、 图 15为感应盘, 盘面上分布有凸起叶片, 已助散热。未知设备旋向时, 可选用图 14所示形状, 如已知设备旋向, 可选用图 15所示的流线形状, 已增加散热量并减小扰流噪 声。  Figure 14 and Figure 15 show the induction discs with raised blades on the disc surface to help dissipate heat. When the unknown device is rotated, the shape shown in Figure 14 can be selected. If the device is rotated, the streamline shape shown in Figure 15 can be selected to increase the heat dissipation and reduce the spoiler noise.
图 16所示为 FTF系列磁耦取下内部两端支承轴承的结构示意,传动轴之间联接采用胀套, 其它系列也可这样做, 但这种方案仅可用在低载情况和轴窜很微小的情况, 原因如下: 感应 盘 1和 5由螺栓联结组成外转子,磁块阖定盘 2和 4与调速机构 3、电机定子 7、电机转子 8、 同步盘 9、胀套 10等由中心传动轴连接组成内转子, 内外转子互不接触, 但由于装配时很难 保证感应盘与磁块固定盘的平行度, 所以会对电机中心轴轴承支承处和负载传动轴轴承支承 处造成交变应力(磁场耦合附加弯矩的作用), 以致于轴过度磨损失效。此外, 轴窜的影响会 造成不稳定运转, 严重时会造成事故。 总的来说, 此种方案要慎用。  Figure 16 shows the structure of the FTF series magnetic coupling with the internal two ends of the support bearing removed. The expansion between the drive shafts is extended. Other series can also be used, but this solution can only be used in low load conditions and the shaft is very In the case of a small case, the reasons are as follows: The sensing discs 1 and 5 are composed of bolted joints to form the outer rotor, the magnetic block retaining discs 2 and 4 and the speed governing mechanism 3, the motor stator 7, the motor rotor 8, the synchronizing disc 9, the expansion sleeve 10, etc. The central drive shaft is connected to form an inner rotor, and the inner and outer rotors are not in contact with each other. However, since it is difficult to ensure the parallelism between the induction disk and the magnetic block fixing plate during assembly, the bearing of the motor central shaft bearing and the load bearing shaft bearing support are caused. The variable stress (the effect of the magnetic field coupling plus the bending moment) is such that the shaft is excessively worn out. In addition, the effects of the shaft will cause unstable operation and, in severe cases, an accident. In general, such programs should be used with caution.
图 17所示为一种概念型内转子电机外置滚珠丝杠调速磁力耦合器(电机采用双速电机或 变频调速电机), 电机定子 7静止不动, 固定在支架上, 电机转子 8和丝杠由紧定螺钉固定在 一起。 电机不通电时, 电机转子 8、 丝杠、 磁块固定盘和中心传动轴同歩高速旋转。调速时, 依靠电机转子与中心传动轴的差速实现丝杠螺母的轴向移动。 此种方案最大的缺点是——调 速时, 电机定子绕组会产生很大的感应电动势, 使调速变得很不稳定。 此种方案最大的优点 是——结构简单。  Figure 17 shows a conceptual internal rotor motor external ball screw speed control magnetic coupler (motor uses two-speed motor or variable frequency speed control motor), motor stator 7 is stationary, fixed on the bracket, motor rotor 8 And the lead screw is fixed by the set screws. When the motor is not energized, the rotor 8 of the motor, the lead screw, the fixed block of the magnetic block and the central drive shaft rotate at the same speed. In the speed regulation, the axial movement of the screw nut is realized by the differential speed between the motor rotor and the central transmission shaft. The biggest disadvantage of this type of solution is that when the speed is adjusted, the stator winding of the motor will generate a large induced electromotive force, making the speed regulation unstable. The biggest advantage of this type of solution is that it is simple in structure.
具体 式 Specific
F型滚珠丝杠电动调速盘式磁力耦合器所包含的各组成零部件,现代工业制造技术均可加 工制造。 滚珠丝杠、 电机、 磁块、 轴承均可由专业厂商配套生产, 其它零部件机加工、 模具 成形、 焊接即可。  The F-type ball screw electric speed disc type magnetic coupler contains all the components and components, and modern industrial manufacturing technology can be manufactured. Ball screws, motors, magnetic blocks, and bearings can be produced by professional manufacturers. Other parts can be machined, mold formed, and welded.
F型滚珠丝杠电动调速盘式磁力耦合器作为一种动设备,其成品要想成功应用,必须具备 以下两个条件- ( 1)功率标定——建立完备的测试台架(各功率扭矩区间), 以完成系列化产 品的标定。 (2)动平衡检测——旋转设备必须达到相关标准规定的动平衡要求, 以达到必要 的安全可靠性。 F-type ball screw electric speed disc type magnetic coupler as a kind of dynamic equipment, the finished product must have the following two conditions to successfully apply - (1) Power calibration - establish a complete test bench (each power torque Interval) to complete serialization Calibration of the product. (2) Dynamic balance detection - Rotating equipment must meet the dynamic balance requirements specified by relevant standards to achieve the necessary safety and reliability.

Claims

本发明重在找至 !f一种磁力耦合器调速的技术方法, 伴随着这种技术方法而引伸出两大系 列 F型滚珠丝杠电动调速盘式磁力耦合器一风冷 F型滚珠丝杠电动调速盘式磁耦 (FTF系 列)、 液冷 F型滚珠丝杠电动调速盘式磁耦 (YTF系列)。 权力要求如下: The invention is focused on finding a technical method for speed regulation of a magnetic coupler, and along with this technical method, two series of F-type ball screw electric speed-disc type magnetic couplers and an air-cooled F-type ball are extended. Screw electric speed disc type magnetic coupling (FTF series), liquid cooling F type ball screw electric speed disc type magnetic coupling (YTF series). The power requirements are as follows:
1、 磁耦外置电机滚珠丝杠调速的技术方法——其特征是电动调速专用高速回转接头和 内转子电机外置滚珠丝杠调速机构组合应用, 电机置于磁耦转子外部。  1. The technical method of the magnetic coupling external motor ball screw speed regulation——characterized by the combination of the high-speed rotary joint of the electric speed regulation and the external ball screw speed regulation mechanism of the inner rotor motor, the motor is placed outside the magnetic coupling rotor.
2、 内转子电机外置滚珠丝杠调速机构调速的技术方法一其特征是内转子电机和滚珠 丝杠组合应用, 未接通电源时, 内转子电机定子、 转子、 滚珠丝杠组件与中心传动轴同步旋 转, 相对静止, 接通电源开关后, 内转子电机转子与定子之间便相对转动 (电机定子与中心 传动轴同步转动), 从而带动丝杠转动, 丝杠转动, 丝杠螺母沿轴向移动, 带动磁体固定盘沿 中心传动轴滑动, 从而改变磁体固定盘与感应盘之间的距离(磁场耦合间隙), 达到调速节能 的目的。  2. The technical method for adjusting the speed of the external ball screw governing mechanism of the inner rotor motor is characterized by the combination of the inner rotor motor and the ball screw. When the power is not connected, the inner rotor motor stator, rotor, ball screw assembly and The central drive shaft rotates synchronously and is relatively stationary. After the power switch is turned on, the inner rotor motor rotor and the stator rotate relative to each other (the motor stator rotates synchronously with the central drive shaft), thereby driving the screw to rotate, the lead screw rotates, and the screw nut Moving in the axial direction, the magnet fixing disc is driven to slide along the central transmission shaft, thereby changing the distance between the magnet fixing disc and the sensing disc (magnetic field coupling gap), thereby achieving the purpose of speed regulation and energy saving.
3、 电动调速专用高速回转接头的技术方法——电动调速专用高速回转接头由内转子和 外转子两大部分组成, 外转子静止不动, 用以连接外部电源, 内转子和中心传动轴同歩高速 转动, 两者相对静止, 内外转子的电流通路按电接触理论的原理。  3. Technical method of high-speed rotary joint for electric speed regulation——The high-speed rotary joint for electric speed regulation consists of two parts: inner rotor and outer rotor. The outer rotor is stationary and used to connect external power supply, inner rotor and central drive shaft. At the same time, the two sides rotate at a high speed, and the two are relatively stationary. The current path of the inner and outer rotors is based on the principle of electrical contact theory.
4、 高速回转密封中利用导向销来控制弹簧移动的技术方法——存在于电动调速专用高 速回转接头两端采翔的密封结构中和液冷 F型滚珠丝杠电动调速盘式磁耦两端的密封结构 中。  4. The technical method of using the guide pin to control the spring movement in the high-speed rotary seal--the seal structure existing in the two-way high-speed rotary joint of the electric speed regulation and the liquid-cooled F-type ball screw electric speed-regulating magnetic coupling In the sealing structure at both ends.
5、 风冷 F型滚珠丝杠电动调速盘式磁耦(FTF系列)的结构方案——其特征是电动调速 专用高速回转接头、 内转子电机外置滚珠丝杠调速机构。  5, air-cooled F-type ball screw electric speed disc type magnetic coupling (FTF series) structure scheme - it is characterized by electric speed special high-speed rotary joint, inner rotor motor external ball screw speed control mechanism.
6、 液冷 F型滚珠丝杠电动调速盘式磁耦(YTF系列)的结构方案^ ~~ ^特征是电动调速 专用高速回转接头、 内转子电机外置滚珠丝杠调速机构、 磁耦内外转子和外壳三者之间的高 速回转密封结抅。  6, liquid-cooled F-type ball screw electric speed disc type magnetic coupling (YTF series) structure scheme ^ ~ ~ ^ features electric speed special high-speed rotary joint, inner rotor motor external ball screw speed governing mechanism, magnetic Coupling high-speed rotary seal between the inner and outer rotors and the outer casing.
7、 利用双速电机或变频调速电机¾动滚珠丝杠运转的概念性调速结构方案——其特征 是电机外置直接驱动滚珠丝杠运动, 利用丝杠和中心传动轴的差速促使丝杠螺母运动(丝杠 螺母和磁体固定盘、 中心传动轴同步转动)。  7. Conceptual speed control structure scheme using double-speed motor or variable frequency speed-regulating motor 3⁄4 moving ball screw operation—characterized by the motor directly driving the ball screw movement, using the differential speed of the screw and the central drive shaft Screw nut movement (screw nut and magnet fixed disc, central drive shaft synchronous rotation).
PCT/CN2014/000554 2014-06-04 2014-06-04 F-model electric speed regulation disc-type magnetic coupler having ball-screw WO2015184564A1 (en)

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