SU1519867A1 - Nut-driver - Google Patents

Abstract

This invention relates to a handheld mechanized tool. The purpose of the invention is to increase reliability. When the engine 2 is turned on when the central gear wheel 9 with internal teeth is locked, rotation from its output shaft 3 is transmitted through satellites 8 to the central gear wheel 10 with internal teeth of the second stage and spindle 4 on which the latter is fixed. In this case, the nut is released with a high torque and a slower rotational speed. When the excitation coil 14 is turned on by applying voltage to its terminals, a magnetic flux is generated that affects the external 17 and internal 18 teeth-poles of the external 15 and internal 16 magnetic conductors and the teeth-poles 11 of the carrier 7. Smooth braking and stopping of the carrier 7 occurs. Simultaneously under by the action of a magnetic field, the ring moves along the external magnetic core 15 towards the engine 2 and through the pin 22 leads the retainer 13 out of the arc groove of the central gear wheel 9 with internal teeth. As a result, the spindle 4 rotates at an accelerated angular velocity and transmits a low torque. 5 il.

Description

The invention relates to a handheld mechanized tool for tightening and disassembling threaded connections, and can be used in various industries.

The purpose of the invention is to increase reliability by providing the ability to switch without stopping the l, wigatel.

Fig, 1 shows a wrench, about the longitudinal section; in FIG. 2, node 1 in FIG. one; FIG. 3 is a section A-A in FIG. 1; FIG. 4 is a section BB in FIG. 1; in FIG. 5 a section bb in phi g, 2.

The nutrunner comprises a housing 1, a motor 2 with an output wa 11. 3, spaced on it, a spindle A with a turnkey head 5 at the end, kinematically connected to the output shaft 3 via a two-stage planetary gear type LC, and a gearshift mechanism .

The two-stage planetary gear includes a central gear wheel 6 with teeth n connected to the output shaft 3, a carrier 7 with a 1 pin installed, 1 pin 1 with satellite 8 located in the housing 1 with BpaiueHViH central gear 9 and 10 with internal teeth of the first and the second stage, respectively, of which the wheel 9 has a larger number of teeth than the wheel 10, and the latter is fixed at the free end of the spindle 4. At the ends of the carrier 7 and the central gear wheel 9, facing the engine 2, are evenly spaced ennye circumferential sector tine-pole 11 and the arcuate grooves 12, respectively.

The gearshift mechanism consists of an electromagnetic brake and a kinematically connected spring-loaded latch 13 in the axial direction, designed to periodically take up with the pole teeth 11 of the carrier 7 and the sides of the arc grooves 12.

Electromagnetic brake includes coaxially placed drive shaft 3 excitation coil 14 and covering its external 15 and internal 16 magnetic lines with evenly spaced circumferentially at their ends teeth-poles 17 and 18, respectively, around the side of the 1P1 towards the carrier 7.

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Between the outer ma, the gangway 15 and the casing 1 there is an annular insert 19, made of a non-magnetic material. The kinematic connection of the retainer 1 3 with an electromagnetic brake is made as mounted on the external magnetic core 15 with the possibility of axial movement of the ring 20 with a radial bore 21 and a finger 22, one end of which is fixed in the middle part of the retainer 13 and the other is located in the radial bore 21 of the ring 20 The latch 13 is spring-loaded in the axial direction by a spring 23,

Wrench works in the following way.

FaiiKOBepT install the turnkey head 5 on the nut to be turned off (not shown). Then the engine 2 is turned on and the nut is released with a slower speed and a high torque.

In order to accelerate the unscrewing of the nut, the excitation coil 14 is passed, electric current is passed through it, resulting in a magnetic flux acting on the outer and inner pole teeth 17 and 18 of the outer 15 and inner 16 magnetic wires and the pole pole 11 of the carrier. 7, smoothly brake the last and stop it. At the same time, under the action of the induced magnetic field, the ring 20 moves along the external magnetic core 15 towards the engine 2 and through the finger 22 B1) 1 leads from the groove

12 central gearwheel 9 with internal teeth and a retainer 13, which compresses the spring 23. As a result, the central gearwheel 9 with internal teeth freely rotates in the housing 1, the satellites 8 are braked, and the spindle 4 at the same time unscrews the nut at accelerated revolutions. After unscrewing engine nuts

2 and the coil 14 of the yozba (they are disconnected from the power source, while under the action of the spring 23 the retainer 13 enters the groove 12 of the central gear wheel 9, locks it from Kopiryca 1, simultaneously the retainer

13 through the finger 22 returns the ring 20 to its original position. The nut wrench is then rearranged to another nut, and the process is repeated in the sequence described.

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Editor And, Gorna

Compiled by Y.Sergeev Tehred M.Hodanich

Order 6642/17

Circulation 778

VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow ,. Zh-35, Raushsk nab. 4/5

Production and Publishing Combine Patent, Uzhgorod, ul. Gagarin, 101

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FIG. five

Proofreader I. Muska

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Claims (1)

The invention The wrench comprising a housing, a motor mounted on it with an output shaft, a spindle with a turnkey head located at the end, kinematically connected to the output shaft through a two-stage planetary gear with a gear carrier with litas, a transmission comprising a central wheel with an external shaft connected to the output shaft the teeth installed in it are gear-mounted: in the housing with the possibility of rotation, the central gears with internal teeth of the first and second stages, of which the latter is fixed to pindel, and a gear shifting mechanism, characterized in that, in order to increase reliability, at the ends of the driver and the central gear wheel with internal teeth facing the engine, sector-shaped pole teeth and 25 arc are respectively uniformly arranged around the circumference the casing is completed, and the mechanism is reversed in the form of an electromagnetically kinematically connected design for the interaction of the force and sideways of the corresponding brake and remove the axially spring-loaded latch, for periodic wiring with with pole-teeth on the sides of the arc and including an excitation coil located coaxially to the drive shaft and external and internal magnetic circuits that are uniformly spaced along the circumference at their ends, pole-teeth facing the carrier, and the kinematic connection of the latch with the Electromagnetic brake is made in the form mounted on an external magnetic circuit with the possibility of axial movement of the ring with a radial hole and a finger, one end of which is fixed in the middle part of the latch, and the other The goy is located in the radial hole of the ring. Figure 1 Aa FIG. 5 Thebes. CH in 'V