WO2002075173A1 - Accouplement a rotule centrifuge limite en moment - Google Patents

Accouplement a rotule centrifuge limite en moment Download PDF

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Publication number
WO2002075173A1
WO2002075173A1 PCT/CN2002/000160 CN0200160W WO02075173A1 WO 2002075173 A1 WO2002075173 A1 WO 2002075173A1 CN 0200160 W CN0200160 W CN 0200160W WO 02075173 A1 WO02075173 A1 WO 02075173A1
Authority
WO
WIPO (PCT)
Prior art keywords
steel ball
ball coupling
coupling according
limiting steel
centrifugal
Prior art date
Application number
PCT/CN2002/000160
Other languages
English (en)
Chinese (zh)
Inventor
Zhongyuan Hong
Xia Hong
Hua Hong
Original Assignee
Jiang, Hanqing
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 Jiang, Hanqing filed Critical Jiang, Hanqing
Publication of WO2002075173A1 publication Critical patent/WO2002075173A1/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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D37/00—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive
    • 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
    • F16D37/00—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive
    • F16D37/02—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive the particles being magnetisable
    • 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
    • F16D43/00—Automatic clutches
    • F16D43/02—Automatic clutches actuated entirely mechanically
    • F16D43/04—Automatic clutches actuated entirely mechanically controlled by angular speed
    • F16D43/14—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members

Definitions

  • the present invention relates to a mechanical power transmission device, and particularly to friction generated by a steel ball centrifugal body between a prime mover (motor, turbine, reciprocating engine, etc., hereinafter simply expressed by a motor) and a load during rotation.
  • a prime mover motor, turbine, reciprocating engine, etc.
  • the structure of a flexible soft-start coupling with torque to transmit power is described.
  • the drive structure is: Single coaxial transmission, transmission without brake wheels, and transmission structures such as parallel shaft gears, sprocket wheels or pulleys; 3. High sliding friction work loss during startup, large friction pair wear, and short life; 4. Only single-speed transmission can be used. It cannot be used with variable-speed multi-speed motors. It has low use value, limited practical application in narrow applications, and slow conversion of technical achievements. 5. Installation and disassembly have no structural integrity and installation. , Inconvenience of use and maintenance. In addition, the powder in the friction pair easily penetrates into the inner cavity of the bearing, causing the flexible coupling of the coupling to fail, and insufficient transmission performance. Disclosure of invention
  • the object of the invention is to provide a centrifugal moment-limiting steel ball coupling with reasonable structure, good soft-start performance, low wear and long service life.
  • Another object of the present invention is to provide a centrifugal moment-limiting steel ball coupling with wide applicability, high reliability, and convenient use and maintenance.
  • a plurality of stoppers are provided on the star wheel shaft body between the star wheel blades.
  • the star wheel system is composed of a star wheel shaft body and a star wheel blade provided thereon.
  • the structure of the choke can be adjusted accordingly according to the transmitted power, speed and working conditions of the working machine.
  • the coupler can be fixed to the star wheel shaft through disc springs by 4-6 brake blocks, respectively. Physically. It can also be composed of 4-12 tile-shaped permanent magnet blocks, a leakage-proof magnetic pad provided therebetween, and a fastener fixing the tile-shaped permanent magnet block to the star wheel shaft body; Outside the block, a shield is provided.
  • a bearing is provided between the star wheel shaft and the auxiliary impeller; and a plurality of pieces are provided between the auxiliary impeller and the star blade.
  • Friction clutch Generally, when the power of the working machine is large, the multi-plate friction clutch can adopt a pneumatic transmission control mechanism to achieve its clutch; for a working machine with a low power, an electromagnetic clutch controller is used.
  • the present invention can also use a belt transmission wheel (such as a pulley or a sprocket) to make the driving wheel shaft and the passive wheel shaft that are not in the same axis center (such as parallel to each other) can be flexibly transmitted and configured.
  • a belt transmission wheel such as a pulley or a sprocket
  • the right cover and the friction shell can be made into one body, and a belt drive groove is provided on the outer periphery thereof.
  • the part of the right cover described above may also be integrated with the friction shell, and a belt drive wheel may be fixed on one side thereof.
  • the former is suitable for the transmission of large-diameter belt transmission wheels, and combines the transmission wheel and the friction shell into one, making the structure more compact and reasonable; the latter is suitable for transmission of small-diameter belt transmission wheels.
  • an infrared slip detection device is provided beside the working machine, and the contact wheel of the detection head is in contact with the rotating shaft of the working machine.
  • the detection device issues an alarm signal and a stop command.
  • a process hole may be provided on the left cover.
  • the process holes are four small holes and a central hole that are evenly distributed.
  • the special holes corresponding to the process holes are used to perform overall installation or removal through the process holes.
  • An annular groove is provided on the inner side of the left cover.
  • One end of the described star wheel is placed therein. In this way, the gap on one side of each fan-shaped cavity of the star wheel blade does not directly communicate with the end of the star wheel shaft, but is zigzag, so as to prevent the Pb 2 0 5 powder in the fan-shaped cavity from directly entering the bearing in the star wheel. in.
  • 6-12 grooves are provided on the friction shell and the right cover. It is easy to remove the nylon pin and has the function of heat dissipation and weight reduction.
  • a sealing felt ring is provided on the right cover, and a dust retaining ring is provided on the left side of the bearing to further prevent dust from entering the bearing.
  • the passive shaft connecting disk may be a half body (or a half body with a brake wheel) or a passive belt transmission wheel.
  • the centrifugal moment-limiting steel ball coupling proposed by the present invention has the following advantages: 1) No-load starting, which can convert full-load and large inertia heavy-load starting into no-load starting, and a small-capacity motor can be used to approach it. Work under operating conditions. In the selection, the power reserve factor is 1 and the starting additional power is zero. Therefore, the installed capacity can be reduced by 1-2 seats, which can save power by 10% -20%. Reduce start-up time and start-up average current And the motor generates heat. Low slip work loss, small wear, and long life during start-up. 2) The flexible connection is soft, the flexible and rigid connection is sensitive to change, and the soft-start performance is good.
  • Transmission type can be concentric shaft, concentric shaft with brake wheel, parallel shaft with (key, tooth) wheel drive, etc. Available for horizontal, tilt and vertical drives. It can meet the requirements of any type of working machine under any working conditions and environments.
  • Figure 1 is a side view of a half section of the present invention
  • FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;
  • Figure 3 is a partial cross-sectional view of a coupler in the present invention.
  • Figure 4 is a partial side view of a coupler in the present invention.
  • FIG. 5 is a partial cross-sectional view of another stopper in the present invention.
  • FIG. 6 is a schematic sectional structural diagram of another belt pulley according to the present invention.
  • FIG. 7 is a schematic structural diagram of a third type of half-belt pulley according to the present invention.
  • FIG. 8 is a schematic view of a fourth cross-sectional structure of the present invention.
  • FIG. 9 is a schematic diagram showing the relationship between the rotation speed and the torque of the present invention, the motor, and several commonly used working machines. The best way to implement the invention
  • Embodiment 1 The inner hole of the star wheel 12 is connected to the main shaft of the motor.
  • a bearing 13 is provided on the outer periphery of the star wheel 12 with a right cover 20 thereon.
  • a felt ring 18 is provided in the right cover 20 with dust blocking in between.
  • the ring 19 is provided with a retaining ring 14 beside the bearing 13; a flower cover 17 and an overload slip alarm 16 composed of leaf springs, spring pads and screws are provided on the outside of the right cover 20; when the overload slips, the leaf spring is connected with The bevel on the flower cover 17 produces sliding friction and makes a noise
  • a bearing 13 is provided on the shaft of the left cover 5 and between the star wheel bearing holes, and an L-shaped dust retaining ring 19 is provided on the outside; a cover plate 25 is provided on the outside of the center portion of the left cover 5 to prevent dust from entering .
  • a stopper 8 is provided on the star wheel 12 between the left cover 5 and the right cover 20. Wherein, the above-mentioned stopper 8 is composed of 6 brake blocks 82 respectively fixed to the star wheel 12 via disc springs 81 (see FIG. 1, FIG. 2, and FIG. 5). It is a type with butterfly spring brake block, which is used for 2 and 4 pole large motor drive, and can be matched with any type of working machine.
  • the inner surface of the cavity 40 surrounded by the friction shell 22, the left cover 5, the right cover 20, and the star wheel 12 and the steel ball centrifugal body 9 constitute a friction pair, and the mechanical energy input by the motor is converted into a friction torque M F , and This achieves multiple transmission performances.
  • the left cover 5 is provided with a process hole 27, so that the special installation tool inserted into the process hole can be used to hit (press) the star wheel 12 shaft body and the top motor spindle to perform the overall installation and removal work.
  • the friction shell 22 can also be made into an overall circular ring (a chute is provided at the nylon pin to facilitate the ejection of the pin, the figure is omitted), and the structure and function of the friction shell and the brake wheel are combined into one. To meet the requirements of use in narrow situations between the motor and the load.
  • Embodiment 2 The above-mentioned stopper 8 may also fix 12 tile-shaped permanent magnet blocks 83 and a magnetic leakage preventing pad 84 made of a non-magnetic conductive material provided below it, and fixed to the star by a fastener 80
  • the shaft body of the wheel 12 is provided with a protective plate 85 on the outer periphery of the tile-shaped permanent magnet block 83.
  • the protective plate 85 can be made of steel plate, so that it has a uniform magnetic field and protects the permanent magnet block 83 (see FIGS. 3 and 4). It is mainly suitable for 4-pole medium and small-sized and 6-10 extremely medium-sized motor drive.
  • FIG. 6 and FIG. 7 are schematic structural diagrams of another derivative type of the present invention.
  • a belt drive groove 10 may be provided directly on the outer periphery of the friction shell 22, and the right cover and the right cover are integrated into one, and the left cover 5 is fixed to the fastener 3 by One side is provided with a stopper 8 and a steel ball centrifugal body 9; when the diameter of the belt transmission wheel used is small, the belt transmission wheel 6 is disposed on one side, and the two are fixed by fasteners Into one.
  • the other structures are similar to those of the first embodiment.
  • Embodiment 4 Referring to FIG. 8, an auxiliary impeller 29 is added on the basis of Embodiment 1, and a magnetic block type stopper 8 is installed in the auxiliary impeller 29.
  • a bearing 1 3 is provided between the auxiliary impeller and the star wheel shaft body, and a shaft sleeve 51 and a seal assembly 52 are provided on the right side of the bearing.
  • a multi-plate clutch 28 is provided between the auxiliary impeller and the star blades. The specific structure of the clutch varies according to the amount of power transmitted by the present invention. In the case of low power, the positive and negative slip rings 53 can be used to send external low-voltage power to the electromagnetic multi-plate friction clutch 28.
  • an external air source can be used to control the air through a rotary joint. ⁇ friction clutch 28.
  • the other structure is similar to that of the first embodiment.
  • the multi-plate friction clutch 28 is disengaged under the control of electromagnetic (or pneumatic) control, and realizes power transmission at high speed.
  • the clutch is in the engaged state. At this time, the star wheel 12 and the auxiliary impeller 29 work simultaneously to achieve power transmission at a low speed.
  • a star wheel is rotated by a motor during operation.
  • the steel ball centrifugal body is driven by the centrifugal force and the action of the damper to the friction shell and the inner walls of the left and right covers under the driving of the star wheel, and generates friction torque to transmit power.
  • the friction torque M F is greater than the load resistance torque ML
  • the running load is smoothly and reliably dragged to run at a steady and uniform speed; or the load is started and accelerated to the working speed to enter the operating condition. Otherwise, the speed of the running load will be reduced or even blocked (overload slip); or the load cannot be started and maintained in its original stationary state, and the motor is started with no load.
  • n d > n t , M F > M L the motor starts to drag the load into the second stage of the starting phase, and its starting additional torque M F -M determines the angular acceleration of the load starting, the flexible coupling of the coupling Slip reduction until fully synchronized, transition from flexible coupling to rigid Connected, then the motor and load rise together to a stable operating condition at a common speed. Therefore, the larger n t , the better the no-load soft-start performance.
  • the height of n t ' has a direct impact on the external characteristics of the coupling and the working machine.
  • the external characteristic diagram is a quadratic parabola OAK passing through 2 points on the ordinate of rectangular coordinates.
  • the external characteristic intersection point of the two is A l 5
  • the torque Mu and the speed n tl corresponding to this point are both low.
  • the steel ball centrifugal body can be subjected to the dual effects of centrifugal force and the stopper resistance during the startup process, thereby changing and improving the external characteristic pattern of the ordinary steel ball coupling, and achieving a substantial increase in n t.
  • No-load soft start performance is good.
  • This kind of choke is because the centrifugal force of the steel ball centrifugal body is nearly 80 times the magnetic force when the coupling mechanism works at the rated operating point, so the magnetic force has no effect on the steady-state transmission.
  • the filling amount of the steel ball centrifugal body is reduced first, so that the friction torque generated by the centrifugal force is always smaller than the resistance torque M of the load.
  • the multi-layer butterfly spring presses the brake block on the star wheel shaft shell under the pre-tensioning force of the fastener, and the stroke radius is left in the outer radius of the brake block and the distribution radius of the steel ball centrifuge body.
  • the invention cooperates with the motor, so that the intersection of the external characteristic graphics of the two is designed as the pole of the safety moment limit value [ ⁇ ] of the overload protection of the invention. This point is somewhere between the F point between the maximum torque M m and the rated torque M k of the motor, and the corresponding speed is in. In this way, the present invention not only has the motor overload protection performance, but also can exert its short-term allowable overload.
  • the present invention has a rigid connection which can be stable and reliable Ground to transmit power and ensure constant transmission speed ratio.
  • an infrared slip detection device can be provided for monitoring when it is matched with a type IV-VI working machine or under frequent severe long-term overload operating conditions and remote automatic control occasions.
  • the overload slip When the overload slips the working machine When the speed is lower than 20% of its rated speed, it will output signals, alarm and stop.
  • the elastic nylon pin of the present invention can also prevent overheating annealing failure caused by overload slip. When the overload slip causes the body temperature to rise to 175 ° C, the nylon pin can be softened and sheared and stopped.
  • the knocking sound of the leaf spring of the overload slip alarm provided by the present invention during overload slip can also remind the on-site operators to stop processing in time.
  • Coordination of multi-machine load distribution performance In essence, it is an extension of the no-load starting and overload protection performance, except that its intersection with the external characteristic graph of the motor is designed somewhere below the [M F ] pole F. Coordination performance can simply and reliably solve the three problems of sequential start of multi-point drive, synchronous load with balanced load and overload protection.

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

Abstract

L'invention concerne un accouplement à rotule centrifuge à fonctionnement doux et limité en moment, lequel est doté essentiellement d'un certain nombre d'amortisseurs sur l'arbre en étoile entre les ailettes en étoile. Lesdits amortisseurs se composent de quatre à six blocs dont chacun est fixé à l'arbre en étoile par un ressort incurvé, de quatre à douze blocs magnétiques permanents, de coussinets magnétiques intermédiaires antifuites et d'un capot, lesquels sont fixés à l'arbre en étoile par une fixation. Les avantages de l'accouplement selon l'invention sont un agencement équilibré, de bonnes performances avec un fonctionnement doux, des frictions réduites, une durée de fonctionnement prolongée, une large applicabilité, une haute fiabilité et une haute facilité d'utilisation et d'entretien, etc .
PCT/CN2002/000160 2001-03-16 2002-03-14 Accouplement a rotule centrifuge limite en moment WO2002075173A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN01108396.4 2001-03-16
CNB011083964A CN1182333C (zh) 2001-03-16 2001-03-16 离心式限矩型钢球联轴器

Publications (1)

Publication Number Publication Date
WO2002075173A1 true WO2002075173A1 (fr) 2002-09-26

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WO (1) WO2002075173A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107612259A (zh) * 2017-10-31 2018-01-19 天津昊野科技有限公司 一种耐油高功率密度高速永磁同步电机

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1260488C (zh) * 2003-05-29 2006-06-21 洪中元 机械软启动器
CN104358802B (zh) * 2014-10-27 2017-03-22 辽宁工程技术大学 立轴耦合式钢珠介质离合器
CN106160582B (zh) * 2016-08-30 2019-01-08 魏稼丰 预压增强型离心式软启动器
CN106195059B (zh) * 2016-08-31 2018-04-24 德阳立达基础件有限公司 一种软启动钢球式安全联轴器及其结构计算方法
CN109158941B (zh) * 2017-10-25 2020-07-31 杭州富阳通讯塑料厂 一种用于建筑电钻设备的扭矩限制器
CN108799370A (zh) * 2018-07-27 2018-11-13 逄增志 一种自动调心联轴器及其电磁刹车器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2910160A (en) * 1955-11-12 1959-10-27 Meder Max Centrifugal force coupling
GB885432A (en) * 1959-08-11 1961-12-28 Max Meder Improvements in or relating to centrifugal clutches
US3190422A (en) * 1961-04-07 1965-06-22 Daimler Benz Ag Centrifugal clutch with vibration damper
CN1043549A (zh) * 1988-12-17 1990-07-04 北京科技大学机械工程研究所 节能安全联轴器
CN2157354Y (zh) * 1993-04-30 1994-02-23 洪中元 限矩型钢球联轴器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2910160A (en) * 1955-11-12 1959-10-27 Meder Max Centrifugal force coupling
GB885432A (en) * 1959-08-11 1961-12-28 Max Meder Improvements in or relating to centrifugal clutches
US3190422A (en) * 1961-04-07 1965-06-22 Daimler Benz Ag Centrifugal clutch with vibration damper
CN1043549A (zh) * 1988-12-17 1990-07-04 北京科技大学机械工程研究所 节能安全联轴器
CN2157354Y (zh) * 1993-04-30 1994-02-23 洪中元 限矩型钢球联轴器

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107612259A (zh) * 2017-10-31 2018-01-19 天津昊野科技有限公司 一种耐油高功率密度高速永磁同步电机
CN107612259B (zh) * 2017-10-31 2023-08-04 天津昊野科技有限公司 一种耐油高功率密度高速永磁同步电机

Also Published As

Publication number Publication date
CN1182333C (zh) 2004-12-29
CN1375644A (zh) 2002-10-23

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