SU1662826A2 - Nut driver - Google Patents

Description

The invention relates to a mechanized tool for assembling or disassembling threaded connections. The goal is

Bretoning - the expansion of technological capabilities. The wrench containing the main working head 2 with a pharynx 3 and a spring-loaded sleeve 5 located therein with main pins 6 is provided with an additional sleeve 8 with additional pins 10 fixed to it 10. As a result, the nuts are operated in three sizes: maximum, when the nut faces interact with faces of the throat 3; medium, when the nuts face interact with additional pins 10; minimal, when the nuts face interact with the main pins 6. 1 Cp f-ly, 4 ill.

1662826 A2

1662826

The invention relates to a mechanized tool for assembling or disassembling threaded connections and can be used in various branches of engineering.

The purpose of the invention is the expansion of technological capabilities by expanding the working range of sizes of threaded connections. ten

Figure 1 shows the wrench, a General view; figure 2 is a view of And figure 1; Fig. 3 shows BB in Fig. 1; figure 4 - the position of the additional pins when interacting with fasteners.

The wrench contains a spindle 1 with a drive (not shown), a main working head 2 connected to it with an axial hexagonal shed 3 placed in the main working head 2 and a sleeve 5 spring-loaded 20 along the axis 4 with an additional working head in the form of fixed in the sleeve 5 basic pins 6 placed in the corners of the shed 3. In the main working head 2, an additional sleeve 8 with holes 9 for the main pins 6 is also spring-loaded 7 along the axis. In the end of the additional sleeve 8 they are pressed into the holes one from the bases s pins 6 extra pins 10, also located in the corners of the mouth 3. Additional pins 10 and the core pins 6 have different diameters. At the end of the additional sleeve 8, an axial hole 11 is made at the end of the stud or bolt. 35 The transmission of torque from the spindle 1 to the sleeves b and 8 is provided with the help of fingers fixed in them 12,

located in the axial groove 13 of the main working head 2.

The wrench works as follows.

When working with a nut (not shown) of the smallest size, the main working head 2 is installed on it with a shed 3. In this case, the main pins 6 contact the nut faces, transferring torque to them.

When working with a medium-sized nut, the main working head 2 is installed on it with a shed 3 and an axial force is applied to it. In this case, the main pins 6 are embedded when interacting with the 15 end face of the nut, and the sleeve 5 is pressed. With the edges of the nut in contact additional pins 10 (figure 4).

When working with a nut of maximum size, its face interacts with the faces of the pharynx 3, since when the 6 and additional 10 pins come into contact with the butt of the nut, the sleeves 5 and 8 move, and the pins 6 and 10 are retracted as a result.

Claims (2)

Claim 1. Wrench on auth.St. No. 1260175, which is aroused by the fact that, in order to expand technological capabilities, it is equipped with a spring installed in the main working head and 30 axes with an additional sleeve with holes, in part of which the main pins are missed, and fixed in the other part of the holes with alternation with the main additional pins of a diameter different from the latter. 2. The wrench according to claim 1, characterized in that an axial bore is made at the end of the additional sleeve.