SU542455A3 - Torsion block - Google Patents

Description

(54) TORSION UNIT

The invention relates to percussion instruments, in particular to wrenches, which transmit a torque to a tightened threaded joint or other similar part through a torsion bar, which limits the transmitted torque.

Percussion instruments with a torsion bar are known that limit the torque transmitted from the tool to the clamped threaded joint fl. However, such a tool design does not allow adjustment of the magnitude of the limiting moment.

The closest in technical essence to the proposed invention is an impact tool, in which the transmitted torque can have two limiting values: one due to the elastic characteristic of the torsion, and the other due to the total elastic characteristic of the torsion and the sleeve 2.

However, this tool design is characterized by a large loss of impact energy.

The aim of the invention is to simplify the construction and stepwise control of the elastic characteristic of the torsion.

This goal is achieved by the fact that the torsion unit is equipped with a locking element that fixes the position of the torsion relative to the sleeve.

In addition, radial holes are made in the sleeve and torsion for inserting into them a locking element made in the form of a pin, and the connecting and working heads are located on the sleeve.

FIG. 1 shows the proposed torsion block, a longitudinal section; in fig. 2 is the same; the section along A-A in FIG. one; in fig. 3 - torsion block, longitudinal section (option); FIG. 4 is the same, section along BB to FIG. 3

The torsion block contains a sleeve 1, a torsion 2 projecting from it at one end, mounted with the possibility of joint rotation with the sleeve 1 and longitudinal movement relative to it, the working head 3 being tightened by a threaded

the connection and the connecting head 4 under the spindle 5 of the percussion instrument, the locking element 6, which fixes the position of the torsion 2 relative to the sleeve 1, which enters the radial

the holes 7 and 8, made in the sleeve 1 and the torsion bar 2, and the retaining ring 9, which prevent the locking element 6 from falling out,

For the stepwise adjustment of the elastic characteristic of the torsion block by changing the overhang of the torsion 2 from the sleeve 1, the latter has several radial holes 7, made along the axis.

The work of the tmcTpyMeHTa shock with the torsion block occurs in the following sequence.

The torsion bar 2 is pushed out of the sleeve 1 for a length corresponding to the required limiting torque. Then put the locking element 6 in the radial holes 7 and 8 and install the locking ring 9 on the holes in which the locking element is mounted. After that, the torsion block connecting head mounted on the spindle of the percussion instrument.

Claims (5)

1. A torsion block that transmits a torque from a pinch of a percussion instrument to a tightenable threaded joint, comprising a sleeve, a torsion bar protruding from it at one end, mounted with the possibility of joint rotation with the sleeve and longitudinal movement relative to the sleeve; and a connecting head for a percussion instrument spindle, characterized in that, in order to simplify the design and to stepwise adjust the elastic characteristic of the torsion, it is provided with a stop p conductive element for fixing the position of the torsion bar relative to the sleeve. 2. A unit according to claim 1, characterized in that radial holes are provided in the sleeve and torsion for insertion of the locking element. 3. Block on PP. 1 and 2, which is also distinguished by the fact that the locking element is designed as a pin. 4. Block on PP. 1-3, about aphids.chay - u and with the fact that the connecting head is located n.: 1 sleeve. 5. Block on PP. 1-3, characterized in that the working head is located on the sleeve. Sources of information taken into account in the examination: 1. US Patent No. 2409395, 81-52.4 of October 15, 1946 2.Patent of England No. 1303295 V 3 f of August 27, 1969