SU1254148A1 - Device for joining drilling rod to perforator drill - Google Patents

Description

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The invention relates to mining, and specifically to the connection of a drill rod with a hammer drill and can be used in mining engineering and construction.

The aim of the invention is to increase the reliability of the device and reduce the complexity of the replacement bar.

Figure 1 shows the device in the open position, a General view; figure 2 - section aa in fig „1; on fig.Z - section BB in figure 1; figure 4 - the device in the closed position.

The device comprises a granbuksu 1 placed in the housing of the perforator 2, inside of which the piston 3 is located. In the front part of the perforator housing there is fixed a housing of the drill holder 4 with a longitudinal cylindrical bore тием 5 under the rod 6 and a transverse rectangular opening 7 under the spacer 8, which is high - are not interconnected with the gripper 9; On the internal surface of the gripper, the protrusion 10 is bulged, and in the front part of it there is a conic boring I1. The lug 10 engages the rod along a cylindrical groove 12 with haptells 13 and 14, filled respectively from the side of the shank and the rod of the rod. The gripper 9 with spacer elements 8 is secured in a closed position in the body of the drillholder with the help of elastic clamping elements 15 and 6 located in the openings of the housing of the drillholder and spacer elements. The gripper and spacers are secured in such a way that axial clearances 17 and 18 are formed between them and the body of the drill holder. The grips with spacers are held in the body of the holder with a retaining ring 19 with through holes 20 for the spacers. The windows 20 are covered with a stacked cup 21 with an axial hole in the bottom under the rod 6 and a radial under clamp 22, which is a variable cross-section rod. The retainer is equipped with a hemispherical head 23, an emphasis 24 and a handle 25. The retainer is spring-loaded with an elastic element 26 to the groove 27, filled into the body of the burdoderzhatel 4. At the ends of the groove, there are holes 28 and 29 corresponding to the open and closed position of the sto5

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pore ring. In order to reduce friction between the clamping elements and the bottom of the yoke 21, metal inserts 30 are installed.

The device works as follows.

For connection with the perforator, the rod 6 is installed in the conical bore 1 and inserted into the gripper 9, which, together with the spacer elements 8, opens into the space of the windows 20 of the retaining ring 19, while the clamping elements 15 and 16 elastically deform clamping elements in the former rto position. When fully inserting the shank of the rod, the grip 9 together with the spacer elements 8 closes around the groove 12 under the action of the force generated by the elastic clamping elements. Then, removing the head 23 of the retainer 22 from the recess 28 and translating it along the groove 27 into the recess 29, set the locking ring to the closed position, i.e. to the position when the windows 20 of the locking ring 19 become perpendicular to the position of the gripper and the spacers, which are tightly compressed by the locking ring. Since the clamping elements 15 and 16 prevent the spacers from escaping beyond the body of the drillholder, the retaining ring is easily rotated and its sticking by the spacers is eliminated, which contributes to a reduction in labor intensity during the process of changing the rod.

When drilling, the piston 3 strikes the rod 6, while the body of the perforator 2, together with the granbuch I, oscillates relative to the rod. When the punch moves forward, to the bottom by the action of the axial force of the feeding device, the gripper 9 with the protrusion 10 collides with the rod along the fillets 14, the rod with the crown blade rests against the bottom and displaces the gripper 9 with spacer elements 8 against the stop in the body of the hydraulic holder by the amount of axial clearance 17, Thereby, the elastic clamping elements 15 are compressed and softened by the engagement of the gripper with the rod and the housing of the drill holder. When the perforator recoils, the rod collides with the protrusion 10 of the gripper 14, compressing the elastic elements 16, which soften the blow and dampen the vibration, which contributes to the durability of the rod and the holder.

In order to remove the rod from the bit holder, the head 23 of the retainer 22 is pulled out by pulling the handle 25 out of the recess 29 and then turning it by the handle 25 and moving it along the groove 27 into the notch 28, and the retaining ring windows 20 opposite the spacers, i.e. . brown541484

the holder is in the open position. When removing the rod 6 from the perforator, first the fillet 13 and then the shank expands the grip 9 5 together with the spacers 8 in. retaining ring windows 20; when the rod is completely removed, the gripper with the spacer elements closes again under the action of the clamping elements 15 10 and 16.

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tt2.2

.Ph.H.

Editor K. Voloshchuk

Compiled by E.Sovetov Tehred M. Morgental

Order 4698/36 Circulation 470 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

0tf.

Proofreader V.Sinitska

Claims (2)

1. A DEVICE FOR CONNECTING A DRILLING ROD WITH A PUNCH, including a granbook placed in the housing of the puncher, the chuck holder case with clamping elements and detachable gripping under the cylindrical groove, made on the rod, the outer side surfaces of which are made with flips, spacer elements fixed in the hull holder case with elastic clamping elements, retaining ring with grooves and retainer, distinguished by that, in order to increase the reliability of the device and reduce the laboriousness of changing the rod, it is equipped with a clip to accommodate the retaining ring, and the spacer elements are placed at the side bald gripping recesses in the locking ring are formed as through windows and closed clip. 2. The device according to π.1, which is made in that the retainer is made in the form of a cylindrical rod with a handle and a hemispherical head, under which a groove with recesses at the ends is made on the body of the holder. 811 „1254148 Phi * / eleven