公开(公告)号：US5791057A

公开(公告)日：1998-08-11

申请号：US704492

申请日：1996-08-20

Applicant: Kazuya Nakamura ,  Makoto Mizutani ,  Masaki Kondo

Inventor： Kazuya Nakamura ,  Makoto Mizutani ,  Masaki Kondo

IPC: B23D57/02 ,  B27B17/00 ,  B27B17/08 ,  B27G19/06 ,  H02P3/04

CPC classification number: H02P3/04 ,  B27B17/083 ,  Y10S83/01

Abstract: The chain of an electromotive chain saw is quickly stopped by the combined use of an electric brake and a mechanical brake when a trigger member is turned off. The rear end of a brake band disposed to tighten a brake drum by operating a hand guard is secured to a bent rod. When the trigger member is released, the brake band is normally tightened around the outer periphery of a brake drum by the urging force of a coil spring. When the trigger member is released, a circuit provided with a brake winding is closed, thereby applying a dynamic braking force. When the dynamic brake force is applied, a centrifugal clutch is released quickly and the speed of stopping the brake drum is accelerated.

公开(公告)号：US5644112A

公开(公告)日：1997-07-01

申请号：US455106

申请日：1995-05-31

Applicant: August Geiger ,  Alexander Knappe ,  Michael Bufe

Inventor： August Geiger ,  Alexander Knappe ,  Michael Bufe

IPC: B23B45/02 ,  B25F5/00 ,  H01H7/02 ,  H01H21/10 ,  H01H21/52 ,  H02P3/04 ,  H02P3/06 ,  H02P25/14 ,  H01H9/00

CPC classification number: H02P3/06 ,  H01H21/10 ,  H01H21/52 ,  H01H2300/002 ,  H01H7/02

Abstract: An electrical switch, particularly for a breaking circuit includes first and second changeover switches. The first and second changeover switches each comprise first and second stationary contacts and a switching contact. A plunger is operatively connected to a rocker for causing the rocker to pivot between a non-operated position and an operated position. The second stationary contacts are associated with the non-operated position of the plunger. A spring is connected between the rocker and the switching contacts. The spring is arranged on the rocker and on the switching contacts so that at least when switching over from the second stationary contacts to the first stationary contacts the switching contacts are lifted off the second stationary contacts essentially synchronously. A delay device is coupled to the switching contact of the first changeover switch for only delaying movement of the first switching contact of the first changeover switch when switching over from the first stationary contact to the second stationary contact after that switching contact has lifted off the first stationary contact. The switching contact of the first changeover switch thus comes to rest against its second stationary contact later than the switching contact of the second changeover switch comes to rest against its second stationary contact.

Abstract translation: 特别是用于断路的电开关包括第一和第二转换开关。 第一和第二转换开关各自包括第一和第二固定触点和开关触点。 柱塞可操作地连接到摇杆，用于使摇臂在非操作位置和操作位置之间枢转。 第二固定触头与柱塞的非操作位置相关联。 弹簧连接在摇臂和开关触点之间。 弹簧布置在摇杆和开关触点上，使得至少从第二固定触点切换到第一固定触点时，开关触点基本上同步地从第二固定触点提升。 延迟装置耦合到第一转换开关的开关触点，仅在第一切换开关从第一固定触点切换到第二固定触点之后，延迟第一切换开关的第一开关触点的移动， 固定接触 因此，第一切换开关的开关触点相对于第二转换开关的开关触点相对于其第二固定触点而停止抵靠其第二固定触点。

公开(公告)号：US5524541A

公开(公告)日：1996-06-11

申请号：US421898

申请日：1995-04-14

Applicant: Klaus Schwinn ,  Harald Togel

Inventor： Klaus Schwinn ,  Harald Togel

IPC: B41F33/00 ,  B41F13/004 ,  B41F33/12 ,  H02P3/04 ,  H02P3/16 ,  H02P7/298 ,  B41F33/08

CPC classification number: H02P3/04 ,  B41F13/0045

Abstract: A description of a method and a device for monitoring the braking of a D.C. motor of a printing machine such as a sheet-fed offset printing machine is given. For safety purposes, in the case of an emergency stop an electrical braking should always be carried out with the maximum torque of the D.C. motor. For this purpose, the disclosed method provides that the actual value of the armature current is detected and compared to a maximum permissible value for the electrical braking. In the event of an impermissibly high deviation and, in particular, in the event of an undershoot of the armature current relative to the maximum permissible value, the power converter and motor are disconnected from the power supply and an electrically actuable brake is applied to the motor.

Abstract translation: 给出了一种用于监测印刷机例如单张胶印机的直流电动机的制动方法和装置的描述。 为了安全起见，在紧急情况下，应始终以直流电动机的最大扭矩进行电气制动。 为此，所公开的方法提供了检测电枢电流的实际值并将其与电制动的最大允许值进行比较。 在不允许的高偏差的情况下，特别是在电枢电流相对于最大允许值的下冲的情况下，功率转换器和电动机与电源断开，并且电致动的制动器被施加到 发动机。

公开(公告)号：US5407400A

公开(公告)日：1995-04-18

申请号：US30943

申请日：1993-03-12

Applicant: W. Roger Thomas ,  Melvin Temple

Inventor： W. Roger Thomas ,  Melvin Temple

IPC: A01D34/68 ,  F16D67/02 ,  H02P3/04 ,  A01D69/10

CPC classification number: A01D34/6812 ,  F16D67/02 ,  A01D2101/00 ,  Y10T477/322 ,  Y10T477/35 ,  Y10T477/363

Abstract: A braking system for a powered rotary tool of the type in which a shaft is rotated about an axis by a motor includes a first brake element mounted for rotation with the shaft; a second brake element which is restrained from rotation; a biasing member normally urging the first brake element in an axial direction into braking contact with the second brake element and a brake release subsystem, the brake release subsystem to release the braking contact between the first and second brake elements upon start-up of the motor. On start-up of the motor, the shaft is free to rotate through a small angle of rotation before initiating rotation of the first brake element. The release subsystem includes at lease one pair of co-operating ramp surfaces, one of the ramp surfaces being arranged for rotation with the shaft and the other of the ramp surfaces being arranged for rotation with the first brake element. The braking system of the present invention is particularly suitable for use on a rotary-blade lawn mower.

Abstract translation: 一种用于电动旋转工具的制动系统，其中轴通过电动机围绕轴线旋转，包括安装成与轴一起旋转的第一制动元件; 禁止旋转的第二制动元件; 通常将第一制动元件沿轴向推动以与第二制动元件制动接触的偏压元件和制动释放子系统，制动释放子系统在电动机起动时释放第一和第二制动元件之间的制动接触 。 在马达启动时，轴可以在第一个制动元件开始旋转之前自由旋转一小角度旋转。 释放子系统包括至少一对协同斜坡表面，其中一个斜面被布置成与轴一起旋转，另一个斜面被布置成与第一制动元件一起旋转。 本发明的制动系统特别适用于旋转叶片割草机。

公开(公告)号：US5327055A

公开(公告)日：1994-07-05

申请号：US28074

申请日：1993-03-08

Applicant: Craig T. Danielson ,  Michael P. McIntosh ,  Hector E. Mery

Inventor： Craig T. Danielson ,  Michael P. McIntosh ,  Hector E. Mery

IPC: H02P3/04

CPC classification number: H02P3/04

Abstract: An automated tape library employing a motorized robotic picker wherein the electric motor driving the robotic picker is equipped with two brakes that act simultaneously. The first is a mechanical brake which uses a spring to push a fixed brake pad against the rotating motor. During normal motor operation, an electric solenoid is used to overcome the spring and disengage the brake pad from the motor. When the robotic picker is to be mechanically stopped, the solenoid voltage is turned off and the solenoid releases the spring placing the brake pad in contact with the motor. The second brake is a dynamic electrical brake which makes use of the back emf of the motor to drive a current back into its own windings such that the motor decelerates. The circuit further prevents mechanical brake engagement even at lower motor speeds when back emf is relatively low but robot speed is fast enough to cause mechanical damage if stopped via the mechanical brake.

Abstract translation: 采用电动机器人拾取器的自动磁带库，其中驱动机器人拾取器的电动机配备有同时作用的两个制动器。 第一种是使用弹簧将固定的制动垫推到旋转马达上的机械制动器。 在正常的电机运行期间，使用电磁螺线管来克服弹簧并将制动衬块与电机分离。 当机械式拣选机械被机械地停止时，螺线管电压被关闭，电磁线圈释放弹簧，使制动片与马达接触。 第二制动器是动态电动制动器，其利用电动机的反电动机将电流驱回其自身的绕组中，使得电动机减速。 该电路进一步防止机械制动接合，即使在较低的电动机速度下，当后退电动势相对较低时，机器人的速度足够快，如果通过机械制动器停止，就会造成机械损坏。

公开(公告)号：US5139156A

公开(公告)日：1992-08-18

申请号：US687081

申请日：1991-04-18

Applicant: Youji Nakamura

Inventor： Youji Nakamura

IPC: B66C13/26 ,  H02P3/04

CPC classification number: B66C13/26 ,  H02P3/04

Abstract: A variable speed electric hoist includes an invertor unit for frequency-controlling the speed of rotation of a lifting motor, a brake on/off section for turning off a brake according to a command produced from the invertor unit while the invertor unit is supplying a three-phase AC current to the lifting motor. The electric hoist also includes an emergency brake turn-on section for detecting a condition that a command produced from the invertor unit is not stopped after a lifting/lowering command is stopped to thereby turn on the brake upon detection of the condition.

Abstract translation: 变速电动葫芦包括用于对提升电动机的转速进行频率调节的逆变器单元，用于根据从逆变器单元产生的指令关闭制动器的制动器开/关部分，而逆变器单元提供三个 相提升电机的交流电流。 电动葫芦还包括紧急制动开启部，用于检测在升降指令停止之后从逆变器单元产生的指令不停止的状态，从而在检测到状况时接通制动。

公开(公告)号：US4651073A

公开(公告)日：1987-03-17

申请号：US774396

申请日：1985-09-10

Applicant: Wataru Shimizu ,  Yasuhiro Yuasa

Inventor： Wataru Shimizu ,  Yasuhiro Yuasa

IPC: H02P3/04 ,  G05B19/35 ,  G05B19/416 ,  G05D3/00 ,  G05D23/275

CPC classification number: G05B19/358 ,  G05B19/416 ,  G05B2219/34387 ,  G05B2219/37313 ,  G05B2219/37486 ,  G05B2219/41105 ,  G05B2219/41279 ,  G05B2219/41288 ,  G05B2219/43019 ,  G05B2219/43115 ,  G05B2219/50187

Abstract: A rotational position, velocity and acceleration of an electrical motor are detected and an amount of overrun produced when the motor has stopped is estimated from the detected velocity and acceleration, and at least one of motor position detection data and a positioning target value is changed in accordance with the estimated amount of overrun. The position detection data and the positioning target value after the change are compared with each other and a command for stopping the motor is generated in accordance with a result of this comparison. A brake is applied to the motor in advance by the amount of the estimated overrun so that the motor is stopped at a desired target position after making overrun. Further, velocity setting signals are generated in accordance with desired acceleration and deceleration characteristics and the velocity control of the motor is effected in an open loop in response to the velocity setting signals. By the stop and velocity controls of an open loop system, positioning control of the motor of the open loop system can be accurately performed.

Abstract translation: 检测电动机的旋转位置，速度和加速度，并且根据检测到的速度和加速度来估计电动机停止时产生的超限量，并且电动机位置检测数据和定位目标值中的至少一个被改变 按照估计的超限量。 将位置检测数据和变更后的定位目标值进行比较，根据该比较的结果生成停止电动机的指令。 预先向电动机施加制动以推定超限量，使得在超速运行之后电动机停止在期望的目标位置。 此外，根据期望的加速和减速特性产生速度设定信号，并且马达的速度控制响应于速度设定信号在开环中进行。 通过开环系统的停止和速度控制，可以准确地执行开环系统的电动机的定位控制。

公开(公告)号：US4493398A

公开(公告)日：1985-01-15

申请号：US490779

申请日：1983-05-02

Applicant: Gerhard Kindler

Inventor： Gerhard Kindler

IPC: H02P3/04 ,  B66B1/28 ,  B66B1/30 ,  H02P27/02 ,  B66B1/24

CPC classification number: B66B1/28 ,  H02P27/026

Abstract: In this drive control the regulating circuits for the rotational speed of a drive motor and of an eddy current brake are matched in their static and in their dynamic behavior so that a common regulator may be used for both regulating circuits. The matching is achieved by interposing a current regulation circuit for regulating the excitation current of the eddy current brake to the rotational speed regulating circuit. The output of the common regulator is supplied via a linearization member as a reference value to a regulator in the current regulation circuit during the deceleration phase. During the acceleration phase the output of the common regulator is supplied to a matching element matching the variation of the torque to the variation of the torque during the deceleration phase with respect to time. The output of the matching element is connected to the control member of the drive motor via a linearization member. By means of the linearization members the characteristics of a d.c.-shunt motor are approximately achievable. A distance regulating circuit is superposed on the rotational speed regulating circuit. The distance reference value is derived from jerk and acceleration magnitudes during the acceleration phase as well as during the deceleration phase, so that an optimum travel curve is achievable.

Abstract translation: 在该驱动控制中，用于驱动电动机和涡流制动器的转速的调节电路在其静态和动态特性中匹配，使得可以将两个调节电路用于公共调节器。 通过设置用于将涡流制动器的励磁电流调节到转速调​​节电路的电流调节电路来实现匹配。 公共调节器的输出通过线性化构件作为参考值供给到减速阶段期间电流调节电路中的调节器。 在加速阶段期间，公共调节器的输出被提供给匹配元件，该匹配元件将扭矩变化与减速阶段相对于时间的扭矩变化相匹配。 匹配元件的输出通过线性元件连接到驱动马达的控制元件。 通过线性化构件，直流并联电机的特性近似可实现。 距离调节电路叠加在转速调节电路上。 距离基准值是在加速阶段以及减速阶段从加加速度和加速度量度得出的，从而可以实现最佳行驶曲线。

公开(公告)号：US4207508A

公开(公告)日：1980-06-10

申请号：US787348

申请日：1977-04-14

Applicant: Victor J. Habisohn

Inventor： Victor J. Habisohn

IPC: B66B1/28 ,  B66C13/26 ,  H02P3/04

CPC classification number: B66C13/26 ,  B66B1/308 ,  B66B1/32

Abstract: A variable speed motor control system for controlling the vertical speed of a hoist. An electro-mechanical brake means locks the hoist load in place when the system is off or when the motor speed is set at a zero speed setting. A quick response circuit is connected into the system for a predetermined time duration after the system is switched from a zero speed to any speed setting (high or low speed), to enable the motor to quickly gain control over the load and prevent the load from slipping as the motor accelerates to the set speed after the brake is released. An initial delay timer is turned on when electrical power is first connected into the system, to prevent transfer of electrical power to the motor and to prevent release of the brake, for a predetermined period of time. A hoist (up-down) electro-mechanical contactor connects electrical power from a source to a thyristor static switch. The system is reset to a start point and the thyristor switch is turned off, when the hoist switch is switched to an off-position but prior to the corresponding line switches breaking their connection with the thyristor switch.

Abstract translation: 一种用于控制起重机垂直速度的变速电机控制系统。 机电制动装置在系统关闭或电机速度设定在零速度设置时将起重负载锁定在适当位置。 在系统从零速度切换到任何速度设置（高或低速）之后，快速响应电路连接到系统预定的持续时间，以使得电动机能够快速地获得对负载的控制，并防止负载 在制动器释放后电机加速到设定速度时滑动。 当电力首次连接到系统中时，初始延迟定时器被接通，以防止电力传递到电动机并且防止制动器释放一段预定的时间。 升降机（上下）机电接触器将电源从源极连接到晶闸管静态开关。 当升降机开关切换到关闭位置，但在相应的线路开关断开与晶闸管开关的连接之前，系统将重置为起始点，晶闸管开关关闭。

公开(公告)号：US3712582A

公开(公告)日：1973-01-23

申请号：US3712582D

申请日：1970-07-16

Applicant: MOESTA D

Inventor： MOESTA D

IPC: F16K31/04 ,  H02P3/04

CPC classification number: F16K31/04

Abstract: A support housing having a cylindrical bore in which a complementary cylindrical spool valve is carried and screwthreadedly engaged with the housing, the valve being rotated by a drive motor for linear movement of the valve in the bore, an inlet port and an outlet port opening to the bore so that communication therebetween is accurately controlled by the linear positioning of the spool valve, a pulse drum structure connected with and rotating with the spool valve and having sensor points thereon which, as the pulse drum rotates with the valve, pass by a sensing device which is thus enabled to sense linear change of position of the drum and hence its associated valve, and a control system operatively connected with the sensing device and the drive motor for actuating the valve to accurately located positions providing selected flow rates through the valve.

Abstract translation: 支撑壳体具有圆柱形孔，其中承载互补圆柱形滑阀并与壳体螺纹接合，该阀由驱动马达旋转，用于阀在孔中的线性运动，入口端口和出口端口 打开孔，以便通过滑阀的线性定位精确地控制它们之间的连通，与滑阀连接并与滑阀一起旋转并且在其上具有传感器点的脉冲鼓结构，当脉冲鼓随阀旋转时，该传感器点经过 感测装置因此能够感测到滚筒及其相关联的阀的位置的线性变化，以及与感测装置和驱动马达可操作地连接的控制系统，用于致动阀以精确定位位置，从而提供选定流量通过 阀。