• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A device for tightening screw joints, comprising a motor, a torque responsive slip clutch and an output shaft, said slip clutch comprising a coil-type friction spring which by one of its ends positively engages one of the clutch halves and which, due to torsional pretensioning, engages the other clutch half by a radially acting friction grip. An adjustable auxiliary torsion spring is arranged in parallel with said friction spring in such a way as to increase or decrease the friction grip of the latter relative to said other clutch half and, thereby, increase or decrease the output torque level of the device. The device includes an adjusting mechanism for setting the torsion load of said auxiliary torsion spring.
    公开号:SU974930A3
    申请号:SU782596557
    申请日:1978-03-22
    公开日:1982-11-15
    发明作者:Кристиан Шопс Кнут
    申请人:Атлас Копко Актиеболаг (Фирма)；
    IPC主号:
    专利说明:

    the reliability of tightening threaded connections with the required torque is not ensured. The purpose of the invention is to improve the adjustability of the friction clutch with the spring released. This goal is achieved by the fact that the device for tightening threaded connections, comprising a housing, an actuator, a wrench, a adjusting mechanism, and a torque limiter, is equipped with a flat spiral spring and the right bushing, the torque adjusting mechanism rings with a hole on its surface for mounting a worm in it, a cylindrical spiral turn ring and a rotary sleeve, the torque limiter is made in the form of friction drive and driven coupling half, leading from which it is placed in a rotary ring and is made with an axial through hole and with a screw thread on its outer surface that interacts with the screw, is guided in a rotary sleeve and is made in the form of a shaft with a wrench head at its end, and inside a cylindrical spring On the driven coupling half there is a flat spiral spring fixed, fixed with the ends in the rotary ring and bushing. The drawing shows a device for tightening threaded connections, a longitudinal section. The device for tightening threaded connections includes a housing 1, a drive (not shown in the drawing), a wrench head 2, a torque adjustment mechanism, made in the form. a rotary ring 3 with a hole k on its surface for mounting a screw 5 in it, a cylindrical coil spring 6, the ends of which are fixed in a different direction. the ring 3 and the rotary sleeve 7. The torque limiter is made in the form of friction drive 8 driven 9 half couplings. The leading plug 8 is placed in the rotary ring 3 and is made with an axial through hole 10 and with a screw thread 11 on its outer surface, which forms a screw pair 3 with the screw 5 of the turn ring 3. The driven coupling half 9 is placed in the rotary sleeve 7 and is made in the form of a shaft with a wrench head 2 at its end, and inside the cylindrical spiral spring 6 on the driven palumuft 9 there is a flat spiral spring 12 fixed by the ends in the rotary ring 3 and the rotary sleeve 7 made rotatably. The locking screws 13 and k are intended to limit the rotational movement of the rotary ring 3 relative to the leading coupling half 8. The cylindrical coil spring 6 can function in the direction of winding of the friction flat coil spring 12, increasing the pretension and the friction gripping last, or in the opposite direction of the spring coiling 12, neutralize preload and friction grip of the latter. The direction of action and the preload of the spring 6 can be set by rotating the rotary ring 3 with the screw 5. The friction coupling halves 8 and 9 are closed by the housing 15. The amount of slip moment in the coupling half is practically independent of the coefficient of friction, but to eliminate its strong wear. 12 may be lubricated with grease. The casing 15 prevents splashing of grease and its penetration into the body 1 of the device. The operation of the device is as follows. Using a screw 5, adjust the twisting force of the spring 6, which is applied to the spring 12, transmitting the torque from the drive coupling half 8 to the driven coupling half 9. The spring 12 transmits torque through the friction gripping of the outer surface of the driven coupling half 9 and the friction gripping of the spring 12 practically does not depend on the friction coefficient of the mating surfaces of the spring 12 and the half-coupling 9. When the required tightening torque of the threaded connection of the half-coupling 8, 9 is reached, one of the other , after the Cherokeematically connected with the safety friction clutch cut-off valve, the valve closes the supply of the working reagent and the drive of the device stops. The design of the device allows you to shut off the supply
    权利要求:
    Claims (1)
    [1]
    Claim
    A device for tightening threaded joints comprising a housing, a drive, a nut head, an adjustment mechanism and a torque limiter, characterized in that, in order to improve the friction clutch adjustability when the spring is released, it is equipped with a flat spiral spring and a rotary sleeve, a torque adjustment mechanism The moment is made in the form of a rotary ring with a hole on its surface for installing a worm in it, a cylindrical coil spring, the ends of which are fixed in the rotary ring and rotate second sleeve torque limiter is designed as a friction drive and driven coupling halves, the leading of which is located in the rotary ring and formed with an axial through Hole with and with a worm thread on its outer surface interacting with the worm, the follower is placed in a rotary sleeve and is made in the form of a shaft with a nut head at its end, and a flat spiral spring is fixed inside the cylindrical spring on the driven half-coupling, fixed ends in the swivel ring and sleeve.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU974930A3|1982-11-15|Device for tightening threaded joints
    US2882704A|1959-04-21|Clutch with overload release
    US3893554A|1975-07-08|Torque limiting clutch
    US20090038904A1|2009-02-12|Wedge clutch assembly
    US8439763B2|2013-05-14|Wedge clutch assembly
    US20060135267A1|2006-06-22|Wedge clutch assembly
    US5573472A|1996-11-12|Wrap spring downshift mechanism
    US2634640A|1953-04-14|Gear operated predetermined torque release wrench
    SU967265A3|1982-10-15|Device for shutting-off pneumatic wrench
    US4610339A|1986-09-09|Adjustable torque limiting assembly
    USRE33514E|1991-01-08|Adjustable torque limiting assembly
    US3598210A|1971-08-10|Clutch comprising a helical spring actuator
    US2259839A|1941-10-21|Clutch
    CA1137004A|1982-12-07|Retarder controlled overrunning clutchwith an axially inclined slot and pin
    US3938398A|1976-02-17|Torque-transmitting devices
    US2729077A|1956-01-03|Constant torque coupling
    US2652135A|1953-09-15|Automatic shutoff safety clutch coupling
    US4399782A|1983-08-23|Device for starting internal combustion engines
    US20050139445A1|2005-06-30|Wedge clutch assembly
    US4718522A|1988-01-12|Automatic adjustment apparatus for a vehicle brake lever of a brake
    US2491325A|1949-12-13|Releasable screw driver
    US4318334A|1982-03-09|Torque control for a fluid operated motor
    GB2152600A|1985-08-07|Adjustable torque-limiting assembly
    US3116618A|1964-01-07|Slip clutch
    US6848998B2|2005-02-01|Wedge clutch assembly
    同族专利:
    公开号 | 公开日
    BR7801744A|1978-10-17|
    ES467894A1|1978-11-01|
    DE2812045A1|1978-10-05|
    GB1599391A|1981-09-30|
    US4243129A|1981-01-06|
    SE7703254L|1978-09-23|
    CA1086107A|1980-09-23|
    SE425769B|1982-11-08|
    NL7803015A|1978-09-26|
    JPS53144097A|1978-12-15|
    FR2384591A1|1978-10-20|
    IT1103891B|1985-10-14|
    FR2384591B1|1985-03-01|
    IT7848513D0|1978-03-20|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US1561537A|1923-07-02|1925-11-17|Aeromarine Plane & Motor Compa|Load-limiting device|
    US1561506A|1924-04-12|1925-11-17|Aeromarine Plane & Motor Compa|Engine starter|
    US2468193A|1945-04-25|1949-04-26|Bell Telephone Labor Inc|Torque limiting device|
    US3370680A|1966-03-03|1968-02-27|Ingersoll Rand Co|Overload released coil clutch|
    FR1534520A|1967-08-22|1968-07-26|Ingersoll Rand Co|Engine wrench|
    US3618730A|1969-12-12|1971-11-09|Vari Typer Corp|Torque-limiting clutch|
    US3955662A|1974-12-19|1976-05-11|Rockwell International Corporation|Torque limiting wrench|
    US3956905A|1974-12-19|1976-05-18|Rockwell International Corporation|Clutch|US4328871A|1980-01-28|1982-05-11|Sps Technologies, Inc.|Power tool speed and torque control mechanism|
    US4488604A|1982-07-12|1984-12-18|The Stanley Works|Torque control clutch for a power tool|
    US4527683A|1983-03-22|1985-07-09|Eaton Corporation|Torque limiting coil clutch and automatic slack adjuster utilizing same|
    GB2151964B|1983-12-23|1987-07-15|Brian Ronald Tompkins|Improved screw driving tool|
    US4610339A|1984-01-06|1986-09-09|American Assembly Tools, Inc.|Adjustable torque limiting assembly|
    CA1248787A|1984-01-06|1989-01-17|American Assembly Tools, Inc.|Adjustable torque limiting assembly|
    USRE33514E|1984-01-06|1991-01-08|American Assembly Tools, Inc.|Adjustable torque limiting assembly|
    NL8500643A|1985-03-07|1986-10-01|Philips Nv|CLUTCH, ESPECIALLY FOR A MAGNETIC TAPE DEVICE.|
    DE3742952C2|1987-12-18|1991-07-04|C. & E. Fein Gmbh & Co, 7000 Stuttgart, De|
    DE8901499U1|1989-02-10|1989-04-06|Kress-Elektrik Gmbh & Co., 7457 Bisingen, De|
    JPH0430293U|1990-07-05|1992-03-11|
    JP3284759B2|1994-06-09|2002-05-20|日立工機株式会社|Impact driver|
    DE29517258U1|1995-10-31|1995-12-21|Cooper Ind Inc|Tool|
    US5941360A|1996-11-21|1999-08-24|Snap-On Technologies, Inc.|Impulse wrench with wrap spring clutch assembly|
    US6165096A|1999-03-12|2000-12-26|Ingersoll-Rand Company|Self-shifting transmission apparatus|
    US6093128A|1999-03-12|2000-07-25|Ingersoll-Rand Company|Ratchet wrench having self-shifting transmission apparatus|
    DE10303235B4|2002-01-29|2011-03-31|Makita Corp., Anjo|Torque-transmitting mechanisms and power tools with such torque-transmitting mechanisms|
    DE102006057928A1|2006-12-08|2008-06-12|Robert Bosch Gmbh|Attachment for a hand tool|
    WO2014056905A1|2012-10-08|2014-04-17|Robert Bosch Gmbh|Hand-held machine tool|
    US9890821B2|2015-02-20|2018-02-13|Blount, Inc.|Clutch for electric tool|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE7703254A|SE425769B|1977-03-22|1977-03-22|Screwdriver with Friction Coupler|
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