CN201227798Y - Screw rotating tool - Google Patents

Abstract

The utility model provides a bolt screwdriver, which comprises three parts which are a rotary joint, a twisting moment amplifying device and a rotary handle, wherein the twisting moment amplifying device comprises a housing; a planet carrier is fixedly connected in the housing; three groups of planet wheels are mounted on the planet carrier; each planet wheel consists of an outer wheel and an inner wheel which are matched with each other via a gear; a sun gear is arranged between the three inner wheels; the sun gear is matched with the three inner wheels via a gear; a ring gear is further arranged on the outsides of the three outer wheels; the ring gear is matched with the three outer wheels via a gear; the sun gear is fixedly connected with the rotary handle via a rotating shaft; and the back end of the rotary joint is fixedly connected with the ring gear. The bolt screwdriver has the characteristics of simple structure, good use effect, and the like.

Description

A kind of screw rotating tool

Technical field:

The utility model relates to a kind of screw rotating tool, is used for the installation and removal of screw.

Background technology:

Existing screw is revolved tool and is comprised handle and cutter head two parts, cutter head inserts the handle the inside, in use, because it is too little to revolve the tool moment of torsion, screw-driving is not in place when often occurring installing, phenomenon such as can't screw out during dismounting smoothly, also cause zero easily, the damage of parts, bring inconvenience for assembling and dismantlement work.

Summary of the invention:

The purpose of this utility model just provides a kind of screw rotating tool, and this screw threads prodigiosin tightens and dismantle all kinds of screws easily, quickly.

The purpose of this utility model can realize by following scheme, comprises swivel joint, torque amplification device and rotary handle three parts composition, and described swivel joint front end is provided with jack, and jack inserts for the cutter head of different size; Described torque amplification device comprises shell, at the affixed planet carrier of housings, three groups of planetary gears are installed on planet carrier, every group of planetary gear is made up of foreign steamer and interior wheel, cooperate by gear between foreign steamer and the interior wheel, in three, be provided with a sun gear between the wheel, described sun gear with three in the wheel between cooperate by gear, also be provided with a gear ring three foreign steamer outsides, cooperate by gear between described gear ring and three foreign steamers, described sun gear is affixed by rotating shaft and rotary handle, and the rear end and the gear ring of described swivel joint are affixed.

Owing between swivel joint and rotary handle, increased torque amplification device, when rotary screw, can tighten and dismantle all kinds of screws easily, quickly.Have characteristics such as simple in structure, that result of use is good.

Description of drawings:

Fig. 1, the utility model structural representation

Fig. 2, torque amplification device structural representation

The specific embodiment:

Contrast Fig. 1, Fig. 2 as can be known, the utility model comprises swivel joint 1, torque amplification device 2 and rotary handle 3 three parts composition, and described swivel joint 1 front end is provided with jack 4, and jack 4 inserts for the cutter head of different size; Described torque amplification device 2 comprises shell 5, the affixed planet carrier 6 in shell 5 the insides, three groups of planetary gears are installed on planet carrier 6, every group of planetary gear is made up of foreign steamer 7 and interior wheel 8, cooperate by gear between foreign steamer 7 and the interior wheel 8, in three, be provided with a sun gear 9 between the wheel, described sun gear 9 with three in the wheel between cooperate by gear, also be provided with a gear ring 10 three foreign steamer outsides, cooperate by gear between described gear ring 10 and three foreign steamers, described sun gear 9 is affixed by rotating shaft (not marking among the figure) and rotary handle 3, and the rear end of described swivel joint 1 and gear ring 10 are affixed.

The utility model operation principle is as follows: during operation, one holds the shell of torque amplification device, rotates rotary handle on the other hand, is passed to swivel joint by torque amplification device, thereby can operates screw.

Claims (1)

1, a kind of screw rotating tool, it is characterized in that comprising swivel joint (1), torque amplification device (2) and rotary handle (3) three parts are formed, described swivel joint (1) front end is provided with jack (4), described torque amplification device (2) comprises shell (5), at shell (a 5) the inside affixed planet carrier (6), three groups of planetary gears are installed on planet carrier (6), every group of planetary gear is made up of foreign steamer (7) and interior wheel (8), cooperate by gear between foreign steamer (7) and the interior wheel (8), in three, be provided with a sun gear (9) between the wheel, described sun gear (9) with three in the wheel between cooperate by gear, also be provided with a gear ring (10) three foreign steamer outsides, cooperate by gear between described gear ring (10) and three foreign steamers, described sun gear (9) is affixed by rotating shaft and rotary handle (3), and the rear end of described swivel joint (1) and gear ring (10) are affixed.

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