公开(公告)号：US5816121A

公开(公告)日：1998-10-06

申请号：US853747

申请日：1997-05-09

申请人： Chikai Yoshimizu ,  Yasusi Anzo

发明人： Chikai Yoshimizu ,  Yasusi Anzo

IPC分类号： B25B21/00 ,  B25B23/14 ,  B25B23/145 ,  B25B23/153

CPC分类号： B25B21/002 ,  B25B21/008

摘要： A speed-increasing mechanism and a clutch mechanism are provided between a speed-reduction gear train and planetary gear trains, to realize a small-torque and high-speed rotation during a light load condition and a large-torque and low-speed rotation during a heavy load condition. A motor is actuated by a relay. An auxiliary motor switch, closing a contact of the relay, is provided at a motor housing to facilitate an operation of a shear wrench during a work where a bolt is fastened upward from below.

摘要翻译： 在减速齿轮系和行星齿轮系之间设置有增速机构和离合器机构，以在轻负载状态下实现小扭矩和高速旋转，并且在大的转矩和低速旋转期间 重载条件。 电机由继电器驱动。 在电动机壳体处设置有用于闭合继电器的触点的辅助电动机开关，以便在从下方将螺栓向上紧固的工作期间促进剪切扳手的操作。

公开(公告)号：US5617924A

公开(公告)日：1997-04-08

申请号：US277961

申请日：1994-07-20

申请人： Wolfgang Baron ,  Erich Nold

发明人： Wolfgang Baron ,  Erich Nold

IPC分类号： B25B21/00 ,  B25B23/14 ,  B25B23/151

CPC分类号： B25B23/14 ,  B25B21/00 ,  B25B21/008

摘要： An arrangement for tightening screw connections comprises a screw spindle turnable by a screw tool, at least two-stage rotary drive for the screw spindle, the drive providing a coarse driving for pre-tightening of a screw connection and a fine driving for obtaining the desired screwing condition, a measuring value pick up for obtaining measuring values which correspond to a value of an available screwing condition, a control device for providing switching signals for the rotary drive in dependence on the measuring values determined by the measuring value pick up, the screw spindle being subdivided into at least three spindle parts, including a first spindle part connected with the drive motor for providing the coarse driving, a second spindle part, and a third spindle part, and an auxiliary drive providing the fine driving and having a drive element which together with the auxiliary drive form an independently operating structural unit which forms the second spindle part and is integrated between the first spindle part connected with the drive motor and the third spindle part carrying the mounting device, the auxiliary drive having a shaft provided with couplings for fixed connection with the first spindle part and the third spindle part, the auxiliary part further having a torque incresing transmission arranged so that the shaft is driven by the drive element through the transmission.

摘要翻译： 用于紧固螺钉连接的装置包括可由螺钉工具转动的螺杆主轴，用于螺杆主轴的至少两级旋转驱动器，该驱动器提供用于预紧螺钉连接的粗驱动，以及用于获得期望的精密驱动 旋转条件，用于获得对应于可用螺纹连接条件的值的测量值的测量值拾取，用于根据由测量值拾取确定的测量值为旋转驱动器提供切换信号的控制装置，螺钉 主轴细分为至少三个主轴部分，包括与用于提供粗动作的驱动马达连接的第一主轴部分，第二主轴部分和第三主轴部分，以及辅助驱动器，其提供精细驱动并具有驱动元件 其与辅助驱动器一起形成形成第二主轴部分并且是整体的独立操作的结构单元 所述辅助驱动器具有设置有用于与所述第一主轴部和所述第三主轴部固定连接的联接件的轴，所述辅助部还具有与所述第一主轴部和所述第二主轴部 扭矩增加传动装置被布置成使得轴由驱动元件通过变速器驱动。

公开(公告)号：US5203242A

公开(公告)日：1993-04-20

申请号：US809961

申请日：1991-12-18

申请人： Gunnar C. Hansson

发明人： Gunnar C. Hansson

IPC分类号： B25B21/00 ,  B25B23/14

CPC分类号： B25B23/141 ,  B25B21/008 ,  B25B23/14

摘要： A power tool for two-step tightening of screw joints by a first high speed step for tightening the screw joint to a predetermined torque snug level (T.sub.1) and a second low speed step for tightening the screw joint to a desired final torque level (T.sub.2). The power tool (10) includes an electric motor, an output shaft (17), a mechanical power transmission coupling the motor to an output shaft (17), a power supply (11) connected to the motor, signal producing device (16) delivering a signal reflective of the output torque of the tool (10), and a comparator device (19, 23) for comparing the torque reflective signal with predetermined limit values corresponding to the torque snug level and to the desired final torque level and for delivering power shut-off initiating signals as the torque reflective signal attains these limit values. The power tool (10) comprises a torque and speed responsive override clutch (30) for limiting the output torque to a safety torque level (T.sub.s) well below the desired final torque level (T.sub.2) but exceeding the snug level (T.sub.1) in case of an inertia related torque overshoot during the first high speed tightening step. A centrifugal weight (48, 49) operated lock element (45) unlocks the clutch (30) for overriding at speed levels exceeding a predetermined level only. During the second low speed tightening step, the clutch (30) is locked against overriding and transfers torque without limitation.

摘要翻译： 一种电动工具，用于通过用于将所述螺纹接头拧紧到预定扭矩紧贴水平（T1）的第一高速步骤两步拧紧螺纹接头，以及用于将所述螺纹接头拧紧到期望的最终扭矩水平（T2 ）。 电动工具（10）包括电动机，输出轴（17），将电动机连接到输出轴（17）的机械动力传递装置，连接到电动机的电源（11），信号产生装置（16） 传递反映所述工具（10）的输出转矩的信号;以及比较器装置（19,23），用于将所述扭矩反射信号与对应于所述转矩贴合水平的预定极限值和所述期望的最终转矩水平进行比较并用于输送 功率关闭启动信号，因为转矩反馈信号达到这些极限值。 电动工具（10）包括扭矩和速度响应超控离合器（30），用于将输出转矩限制在远低于期望的最终转矩水平（T2）的安全扭矩水平（Ts），但是在超过适配水平（T1）的情况下 在第一高速紧固步骤期间产生惯性相关的转矩过冲。 离心锤（48,49）操作的锁定元件（45）解除离合器（30）以仅在超过预定水平的速度水平超限。 在第二低速紧固步骤期间，离合器（30）被锁定以防止超限，并且传递转矩而不受限制。

公开(公告)号：US5005654A

公开(公告)日：1991-04-09

申请号：US455934

申请日：1989-12-18

申请人： Yasumitsu Moriki ,  Hirotomo Numakura

发明人： Yasumitsu Moriki ,  Hirotomo Numakura

IPC分类号： B23P19/06 ,  B25B21/00 ,  B25B21/02 ,  B25B23/14

CPC分类号： B25B21/008 ,  B23P19/06 ,  B25B21/00 ,  B25B23/14

摘要： A hydraulic shoe bolt wrench used to mount and remove shoe bolts which secure shoes to a track chain. The apparatus comprises a vertical cylinder stood upright on a frame moving on a work table, a main frame secured to a piston rod of the vertical cylinder, a wrench socket driving shaft vertically projected below the main frame, a low speed high torque motor and a reduction gear provided on the driving shaft. Pressure oil is supplied to the high speed low torque motor and high pressure oil is supplied to the low speed high torque motor. Switching of the high speed low torque motor to the low speed high torque motor is carried out by a pressure switch disposed in a low pressure hydraulic circuit.

公开(公告)号：US4892013A

公开(公告)日：1990-01-09

申请号：US213156

申请日：1988-06-29

申请人： Atsushi Satoh

发明人： Atsushi Satoh

IPC分类号： B25B21/00 ,  B25B23/147 ,  B25F5/00 ,  F16H3/74

CPC分类号： B25F5/001 ,  B25B21/008 ,  B25B23/147 ,  F16H3/74

摘要： A variable speed gearing apparatus for a rotary electric tool, including a differential gear mechanism for being mounted within a gear case, an intermediate gear and a clutch mechanism, a final planetary gear mechanism having internal gear with projections formed on the outer peripheral surface of the internal gear in the differential gear mechanism, a torque-setting cam arranged so that said projections of the internal gear of the final planetary gear mechanism are capable of being engaged with and disengaged from the torque-setting cam a first planetary gear mechanism having an internal gas, wherein the outer peripheral surface of the internal gear of the first planetary gear mechanism in the differential gear mechanism is tapered, a brake disk having a tapered surface corresponding to the tapered surface of the internal gear of the first planetary gear mechanism, the brake disk being arranged to be axially movable to be brought into pressure contact through the tapered surface of the brake disk with the tapered surface of the internal gear of the first planetary gear mechanism movably in a rotation-stopped condition, the brake disk being arranged so that it can be interlocked against axial movement with respect to the internal gear of the final planetary gear mechanism.

公开(公告)号：US4485698A

公开(公告)日：1984-12-04

申请号：US442740

申请日：1982-11-18

申请人： Nils G. Adman ,  Rolf A. Jacobsson

发明人： Nils G. Adman ,  Rolf A. Jacobsson

IPC分类号： B25B21/00 ,  B25B23/14 ,  B25B23/145 ,  B25F5/00 ,  B25F5/02 ,  B25B17/00

CPC分类号： B25B21/008 ,  B25F5/00 ,  B25F5/02

摘要： A pneumatic power tool for tightening screw joints comprises a primary motor 11 for the high speed running down sequence and a secondary motor 12 for the high torque final tightening sequence. The tool includes a coupling gearing 18 providing a high ratio gearing for the secondary motor 12, a gearing of a substantially lower ratio for the primary motor 11 and a one-way clutch 30 by which the secondary motor 12 is automatically engaged at decreasing tightening speed. An air supply valve 33 is employed to substantially reduce the air consumption of the tool by keeping the air supply to the secondary motor 12 shut until a certain degree of tightness in the joint is obtained which by the supply valve 33 is experienced as an increased back pressure from the primary motor 11. At a back pressure corresponding to the predetermined certain degree of tightness in the joint the valve 33 is opened and the secondary motor 12 is energized. A reduction gearing 19 is supported in a casing 90 which is rotatively connected to the tool housing 10 and provided with a laterally extending torque reaction bar 92. An arresting mechanism is employed to prevent rotation between the tool housing 10 and the gear casing 90 when the tool is in operation. Balls 96,97 are arranged in the housing 10 to lock either the gear casing 90 or the throttle valve trigger 16 against movement relative to the tool housing 10 by engaging either one of a row of notches 93 on the gear casing 90 or a groove on the trigger stem 94.

摘要翻译： 用于紧固螺纹接头的气动电动工具包括用于高速行进运行顺序的主电动机11和用于高扭矩最终紧固顺序的次级电动机12。 该工具包括联接齿轮18，其为次级电动机12提供高比率齿轮传动装置，对于主电动机11具有基本较低比率的传动装置和单向离合器30，通过该单向离合器，次级电动机12以降低的紧固速度自动接合 。 采用空气供给阀33，通过保持向二次电动机12的供气保持关闭直到达到一定程度的接头紧密度，从而大大减少了工具的空气消耗，这通过供给阀33作为增加的回 在与初级电动机11的压力相对应的背压下，阀33打开并且二次电动机12被通电。 减速齿轮19支撑在壳体90中，壳体90可旋转地连接到工具壳体10并且设置有横向延伸的扭矩反作用杆92.采用止动机构来防止当工具壳体10和齿轮壳体90之间的旋转时 工具正在运行。 球96,97布置在壳体10中，以通过将齿轮壳体90中的一排凹口93或齿轮壳体90上的凹槽接合而阻止齿轮壳体90或节流阀触发器16相对于工具壳体10的移动 扳机杆94。

公开(公告)号：US4484871A

公开(公告)日：1984-11-27

申请号：US442739

申请日：1982-11-18

申请人： Nils G. Adman ,  Rolf A. Jacobsson

发明人： Nils G. Adman ,  Rolf A. Jacobsson

IPC分类号： B25B21/00 ,  F01C13/02 ,  B23Q5/06 ,  B25B17/00

CPC分类号： B25B21/008 ,  Y10T74/19014 ,  Y10T74/19274

摘要： A pneumatic power tool for tightening screw joints includes a primary motor 11 for the high speed running down sequence and a secondary motor 12 for the high torque final tightening sequence. The tool includes a coupling gearing 18 providing a high ratio gearing for the secondary motor 12, a gearing of a substantially lower ratio for the primary motor 11 and a one-way clutch 30 by which the secondary motor 12 is automatically engaged at decreasing tightening speed. An air supply valve 33 is employed to substantially reduce the air consumption of the tool by keeping the air supply to the secondary motor 12 shut off until a certain degree of tightness in the joint is obtained, after the valve 33 is opened and the secondary motor 12 is energized.A reduction gearing 19 is supported in a casing 90 which is rotatively connected to the tool housing 10 and provided with a laterally extending torque reaction bar 92. An arresting mechanism is employed to prevent rotation between the tool housing 10 and the gear casing 90 when the tool is in operation. Balls 96,97 are arranged in the housing 10 to lock either the gear casing 90 or the throttle valve trigger 16 against movement relative to the tool housing 10 by engaging either one of a row of notches 93 on the gear casing 90 or a groove on the trigger stem 94.

摘要翻译： 用于紧固螺纹接头的气动动力工具包括用于高速行驶顺序的主电动机11和用于高扭矩最终紧固顺序的次级电动机12。 该工具包括联接齿轮18，其为次级电动机12提供高比率齿轮传动装置，对于主电动机11具有基本较低比率的传动装置和单向离合器30，通过该单向离合器，次级电动机12以降低的紧固速度自动接合 。 采用空气供给阀33，通过保持向二次电动机12的供气切断直到达到一定程度的接头紧密度，在阀33打开之后，二次电动机 12通电。 减速齿轮19支撑在壳体90中，壳体90可旋转地连接到工具壳体10并且设置有横向延伸的扭矩反作用杆92.采用止动机构来防止当工具壳体10和齿轮壳体90之间的旋转时 工具正在运行。 球96,97布置在壳体10中，以通过将齿轮壳体90中的一排凹口93或齿轮壳体90上的凹槽接合而阻止齿轮壳体90或节流阀触发器16相对于工具壳体10的移动 扳机杆94。

公开(公告)号：US4215594A

公开(公告)日：1980-08-05

申请号：US924525

申请日：1978-07-14

申请人： William Workman, Jr. ,  John R. Bos

发明人： William Workman, Jr. ,  John R. Bos

IPC分类号： B25B23/157 ,  B25B21/00 ,  F16H35/10 ,  F16H3/74

CPC分类号： B25B21/008

摘要： A power tool speed shifting mechanism includes a planetary gear set wherein the ring gear is connected to the driven member of a torque responsive disengageable clutch. The driving clutch member is keyed for rotation with the sun gear of the planetary gear set; and the ring gear is mounted in a one-way clutch to provide for unidirectional rotation of the entire planetary gear set at the speed of the sun gear when the torque responsive clutch is engaged. The one-way clutch is mounted in an axially movable but substantially nonrotatable member of a torque responsive coupling. In response to a predetermined torque being transmitted through the speed shifting mechanism the clutch members disengage to impose a reaction torque on the coupling through the ring gear and the clutch. Axial movement of the one coupling member together with the ring gear holds the clutch disengaged whereby the planet gear carrier then rotates at a reduced speed with respect to the sun gear.

摘要翻译： 电动工具变速机构包括行星齿轮组，其中，齿圈与扭矩响应可分离离合器的从动构件连接。 驱动离合器构件用于与行星齿轮组的太阳齿轮一起旋转; 并且所述环形齿轮安装在单向离合器中，以在所述转矩响应离合器接合时以所述太阳齿轮的速度提供整个行星齿轮组的单向旋转。 单向离合器安装在扭矩响应联轴器的可轴向移动但基本不可旋转的构件中。 响应于通过变速机构传递的预定扭矩，离合器构件脱开以通过齿圈和离合器在联接器上施加反作用力矩。 一个联接构件与环形齿轮的轴向运动保持离合器分离，由此行星齿轮架随后以相对于太阳齿轮的降低的速度旋转。

公开(公告)号：US4183265A

公开(公告)日：1980-01-15

申请号：US864740

申请日：1977-12-27

申请人： Reginald W. Pauley

发明人： Reginald W. Pauley

IPC分类号： B25B21/00 ,  F16D57/00 ,  F16H3/74 ,  F16H3/44

CPC分类号： F16D57/00 ,  B25B21/00 ,  B25B21/008 ,  F16H3/74

摘要： A power operated wrench having a clutch means disposed to effect relative rotation between the drive means and the output spindle. The clutch means cooperates with the gear reduction system to allow the drive means to continue rotating thereby allowing repeated application of the maximum torque output of the drive means. The clutch means further effects a reduction of the system inertia which must be absorbed by a fastener after high speed run down and thereby prevents overtorque.

摘要翻译： 一种动力操作的扳手，其具有设置成实现驱动装置和输出主轴之间的相对旋转的离合器装置。 离合器装置与齿轮减速系统配合以允许驱动装置继续旋转，从而允许重复施加驱动装置的最大扭矩输出。 离合器装置进一步降低了系统惯性，该惯性必须在高速下降之后由紧固件吸收，从而防止过转矩。

公开(公告)号：US3739659A

公开(公告)日：1973-06-19

申请号：US3739659D

申请日：1971-12-30

申请人： GARDNER DENVER CO

发明人： WORKMAN W

IPC分类号： B23Q5/12 ,  B23Q5/58 ,  B25B21/00 ,  B25B23/145 ,  F16H61/02 ,  F16H3/74 ,  B23Q5/36 ,  F16D43/20

CPC分类号： B25B21/008 ,  B25B23/145 ,  F16H61/0262 ,  F16H2718/24 ,  Y10S173/02

摘要： A two-speed shift device for a power tool such as a wrench or nutsetter comprising a planetary gear set having a planet gear carrier connected to the driven member of a torque responsive clutch and a ring gear mounted in a one-way clutch for unidirectional rotation. The driving member of the torque responsive clutch comprises a piston which is axially movable to uncover a pressure fluid port in response to a predetermined torque to cause pressure fluid to disengage the torque clutch to provide for the planetary gear set to become operative to reduce the output speed of the tool.

摘要翻译： 一种用于诸如扳手或螺母的动力工具的双速换档装置，包括行星齿轮组，行星齿轮组具有连接到转矩响应离合器的从动构件的行星齿轮架和安装在单向离合器中的单向离合器的单向旋转 。 扭矩响应离合器的驱动构件包括可响应于预定扭矩而轴向移动以露出压力流体端口的活塞，以使压力流体脱离转矩离合器，从而使行星齿轮组变得可操作以减小输出 工具的速度。