SU933435A2 - Multispindle power nut driver - Google Patents

Description

one

The invention relates to mechanical engineering and can be used al assembly threaded connections.

According to the main author. St. N 841954 is known for a multi-stranded wrench, comprising a housing, spindles with wrenches housed therein, a driving shaft, kinematically associated with each spindle, deactivating the mechanism in the form of a movable cage, cam and pre-ld release clutches, movable spring-loaded stops and an pneumatic cylinder lj.

The disadvantage of this wrench is that that when tightening the threads of the connections, the torque can j not be removed from all spindles at the same time.

The purpose of the invention is to increase the reliability of simultaneous removal of torque from all ischinales.

Stranded due to the fact that the wrench is equipped with flanges along its axis, the Hzltotspymn Shtppgash, and are installed with the MP of the Megaraio driver, spring-loaded lugs, safety clutches with control plugs, the movable holder of the driving mechanism is made with holes, there are holes in them, there are holes in the holes, and the movable holder of the control mechanism is made with holes, there will be holes in the holes, and the movable sleeve of the control mechanism is made with holes, there will be openings in the holes, there will be holes in the hole, there will be holes in the hole, and the movable sleeve of the control mechanism will have holes, there will be holes in it, there will be openings in the holes, there will be holes in the hole, there will be openings in the hole, there will be holes in the hole, and the movable sleeve of the control mechanism will have holes, there will be openings in the holes, there will be openings in the holes, there will be openings in the holes, there will be holes in the hole, there will be openings in the hole, and the movable sleeve of the control mechanism will be provided with holes, there will be holes in the holes, and the movable sleeves will have control plugs; end with safety clutch control forks, and the other with movable stops.

FIG. 1 shows the proposed multi-spindle longitudinal section wrench; in fig. 2 shows section A-A in FIG. one.

Claims (1)

The wrench includes a housing (not shown), spindles 1 disposed therein with spring-loaded wrenches 2, a drive shaft 3 with a central gear 4, which is in engagement with the driven gear 5 attached to the spindle x 1. Each safety coupling 6 is connected to a corresponding one driven gear 5 through the cam clutch 7. The shut-off mechanism is designed as a movable casing 8 with holes 9, 10. The driving rods 11 are passed through the holes 10 of the casing 8, one 393 of the end of each plug is fixed The coupling sleeve 6, and at the other end, a spring 15 is clamped with the help of nuts 13, 14. The stops 16 pass through the holes 9 of the sleeve 8 and are pressed out of the rods 11 by springs 17. The tripping mechanism has the ability to mix along the force of the pneumocystine 18, 2O. Multi-spindle wrench works as follows. Central gear 4 per / (takes into account the rotation from the drive and transmits it to the driven gear m 6, which, in turn, transmit the rotation to the leading piston clutch 7, rigidly fixed to the gear x 5. At the same time, the pneumatic cylinder 18 is actuated; associated with the movable yoke 8. The yoke 8, receiving movement from the rod of the pneumatic cylinder 18, moves along the guides 19, 2O to the extreme right position and compresses the springs 17. Under the action of the forces of the springs 17, the stops 16 press on the stand 11, which act on the forks 12 controls per n goes to the coupling coupling 6, move them to the extreme right position. The sleeves 6 shift when the cam coupling 7 closes, which occurs when its cam engages. At the same time, the rods 11 together with the control forks 12 are displaced by safety clutches 6 in extreme right position. When the cam clutches 7 are engaged, the torque is transmitted to the spindles 1 and the spring-loaded keys 2 secured to them through the clutch safety 6. After the saTstscKa of all threaded connections has been reached, cf. The pneumatic cylinder 18 is abutted, the rod of which is pushed out and along the guides 19, 2O returns the holder 8 to the initial position, while the springs 17 are relaxed and the springs 15 are compressed. Then, when turning the driven gears 5, the cams of the leading coupling halves of the cam clutches 7 move away from the slats of the driven coupling halves, thereby allowing the rods 11c of the control forks 12 attached to the Sh1X control to return to their original left position 5 and pull together the safety clutches 6. At the same time, the cam clutch opens 7. The torque is transmitted through the safety clutches 6 to the key 2. After the tripping of the mechadism triggers, the keys can be removed from the heads of the bolts of the threaded connection. The use of a multi-spindle nut driver allows the spindles to be controlled by transferring torque to them when the cam clutches are closed, or, conversely, by stopping the transmission of the moment when the cam clutches open. Such control allows simultaneous removal of torque from all bolts of the group joint, which has a positive effect on improving the quality of tightening. In addition, removing the torque from the heads of the bolts of the threaded group connection allows you to freely, without jamming, remove the keys of the spindles with the nut-screw, eliminates the possibility of coupling the keys under load with the heads of the bolts, which can lead to breakage of the wrench. The invention formula Multi-spindle wrench on the author. St. N 841954, characterized in that, in order to increase the reliability of simultaneous removal of torque from all spindles, it is equipped with driving rods loaded along their axes and spring-loaded stops mounted on the holder of the tripping mechanism, safety couplings have control plugs, the mobile holder of the tripping mechanism is made with holes in which drive rods are placed that interact with one control cable with control plugs for locking couplings, and the other with spring-loaded stops. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 841954, cl. B 25 B 21/00, 1979 (prototype).