SU27007A1 - Holder - Google Patents

Description

An arm carrier is provided, which is an improved design of a Crollius bar holder. When the latter operates, the following disadvantages are observed: due to the size of the rod-holder during operation, it usually slips between the beams on which the machine is mounted, as a result of which it is necessary to attach it on stand-up boards, bonfires from sticks, etc. in each case; when the hammer strikes the housing, in order to open the jaws clamping the rods, the housing flattens out and the hammer often hits the cam. Small splinters bounce off from a strong blow, which, if they fall into the well, can cause an accident; In addition, the Crelius holders hold the rod movement only along the axis of the well, but not around it, as a result of which it is necessary to have two workers with two tongs when screwing and unscrewing.

In order to avoid these drawbacks, the following improvements were introduced in the proposed holder design: 1) introducing a device that prevents the rod holder from rotating in a plane perpendicular to the borehole axis, which is achieved by using a device that extends to both sides of the bars that have longitudinal holes for the ears to pass, rotating freely around its vertical axis, and 2) in adapting a device to the Crelius holder, simultaneously preventing rotation of the rods when unscrewing and vinchivanii guide them and prevents slippage of the projectile through the fist, which in this case is achieved by pad device operating with a clamping screw.

In the schematic drawing of FIG. 1 shows a holder of the ring in partial section; FIG. 2-view it in the plan.

Rod end consists of a bed 1 (Fig. 1), sector fists 2, mounted on axis 3, one of which is equipped with a handle 4. The iron strip forming the bottom of bed 1 is elongated and extends beyond it in both directions, forming bars 5, structures fastened for rigidity with the vertical walls of the frame 1 by means of squares 6.

At their extreme ends, the bars 5 have oblong holes 7, into which the lugs 8 freely pass, which can rotate around their vertical axis and are firmly fixed on the wooden beams 9 that serve as the foundation for the machine tool and the motor.

In the left upper part of the frame 1 there is a post 10 supporting the pads 11 and 12, which can rotate around the bolts 15 and press tightly against the rods 13 by means of the clamping screw 14. The pads 11 and 12 are notched at the points of contact with the rods 13.

The clamp 16, mounted on the square 20, prevents vertical movement of the pads 11 and 12 when the clamping screw 14 is turned. The latter, on one side, passes into a 6 or 8-faced rod 18, on which a handle 17 is put on screws 14. The handle 17 may also be provided with a ratchet. The clamping screw 14 is calculated in such a way that the full clamping of the rod 13 with the pads 11 and 12 occurs when it is rotated through an angle of not more than 180 °.

Between the pads 11 and 12, along the axis of the clamping screw 14, there is a spring 19 which expands the pads. The square 20 connected to the housing 1 serves to support the pads and the clamping screw 14.

Shtanderzhal action. At the beginning of the 8th well, a column bed is lowered with a rod screwed to it, which is kept from falling, as usual, with a key or tongs; then a rod holder is put on the rod, which slides freely along the rod and lowers to the floor level, with the ears 8 located in position 8 being passed through the holes 7 and turning 90 °, after which the sectors 2 are pressed against the rods 13 , holding the column from falling after removing the key or ticks. Further, by turning the handle 17 under the action of the clamping screw 14, the pads 11 and 12 are clamped, which hold the rods 13 from rotating, as well as from slipping down through the fists 2. Density of the pads 11 and 12 against the rods 13

This is ensured by the fact that the holes in the pads, in which the bolts 15 are missed, are made of a larger diameter than the bolts 15. As soon as the handle 17 is wrapped to rejection, they start to screw the next rod (or several at once), and the lugs 8 hold back rotation around the well axis; then the handle 17 is returned to its initial position, as a result of which the pads 11 and 12 are opened by the action of the spring 19 and release the rods 13. After that, slightly raise the projectile upward with the help of a winch.

If the fists 2 have clamped the rods 13 very strongly, then the rod holder rises together with the rods until bar 5 strikes the projections of the lugs of the lugs 8; the fist 2 retracts aside from the blow and releases the rod 13, after which the shell goes down on the winch until the end of the rod 13 comes close to the rod holder, then turning the handle 4 again delays the forward movement of the shell down and turning the handle The pads 17 are clamped on the pads 11 and 12, the next rod is screwed on and the whole process is repeated again.

The subject matter of the invention.

A rod-holder, consisting of two pads, mounted on bolts fixed in a frame and clamped with a screw with a handle, characterized in that, to prevent rotational and translational movement of the rods, the frame; 1 bar holder is elongated in two directions by bars 5, which at the ends have longitudinal holes for passage of lugs 3 through them fixed on the foundation beams 9 with free rotation around their vertical axis. }