SU692995A1 - Perforator - Google Patents

Description

(54) PUNCHER

I

This invention relates to the mining industry, in particular to rotary hammers.

A perforator is known, which includes a housing with a piston-drummer, a central pipe Hjnra tube by sealing 1.

Its disadvantage is the necessity of expanding the industrial channel in the drill rod at the place of installation by the ear, which violates its integrity and reduces durability. In addition, if the drill rod is changed, the transmitting tube may be damaged. This reduces the reliability and durability of the punch.

The closest to the proposed technical essence and the achieved result is a perforator, which includes a housing with a piston-hammer, a swivel unit with a facebox, an intermediate head, a drilling tool, and a flushing tube 2.

The aim of the invention is to improve the perfection and durability of the perforator.

To achieve this goal, in the end part of the intermediate head of the perforator, a centering recess with a yiwoTiffel element in its wall for setting the drilling tool is made.

In the drawing shows the proposed punch with a cut of its front.

The perforator includes a housing 1, an impact piston 2, a flushing tube 3, a rotary unit 4, an intermediate head 5, a coupling: axle 6, granbuchs 7 and a rotary axle 8. Case 1 is made in the form of dodydry, in which the piston-hammer 2 and the rotary unit 4 are placed The piston-drummer 2 has slots that are extra-wide on its front part, with which it is connected with the rotary axle box 8. The rotary unit 4 consists of a ratchet ring with a helical rod and dogs (not shown) that are located in the lower part of the housing 1.

Claims (2)

In the front part of the body there is a coupling box 6, which interacts through threads and ishits with a rotary axle box 8 and a piston-drummer 2. Granbuksa 7 is screwed into the front part of the axle box 6, into which is inserted: the shank of the drilling tool 9, made with a central channel 10 long. 69 flushing fluid. Intermediate block 5 is located in the slot of the axle box 6 and is located between the piston-hammer 2 and the shank of the drilling tool 9. Between the outer surface of the intermediate head 5 and the inner surface of the axle box 6 is placed seal 11. In the front end part of the intermediate block 5, centering the bottom 12 is provided. in which the end of the shank of the bzf tool 9 is located. Inside the recess there is a recess for installing a sealing element 13, which covers the end of the drilling tool 9. Along the piston axis nick 2 and the intermediate firing pin 5 passes the central opening 14 in which is situated the washing tube 3. The end promgeochyoy tube enters the central opening 14 of the intermediate .boyka 5 from its rear end. The tube 3 in the intermediate head 5 is sealed with the cuff 15. The compressed air and industrial water are supplied by means of pipes 16 and 17. To start and stop the punch, a start valve 18 with a handle 19 is provided. The punch operates as follows. After opening the start-up valve 18, the compressed air is post-flowing. into the rotary hammer through the nozzle 16, acts on the piston-hammer 2. When the piston-hammer hits straight ahead (in the direction of the shank of the drilling rig 9), it strikes the back end of the intermediate striker 5, which transmits a shock pulse to the shank of the drilling tool 9. When the reverse course of the piston-hammer 2, interacting with the helicoidal rod, ratchet ring and doggie, turning around its axis, turns the slots of the swiveling axle 8. The rotary axle 8 with the coupling axle 6 and granuksa 7 jointly transmit the rotating MOMeir needle. to the product of the drilling tool 9. Thus, the rotation (rotation of the drilling tool 9 is carried out during the return stroke of the poriosh-impactor 2, the washing of the bottom, both during the operation of the perforator and with the non-operating perforator, is carried out by a curved image. The liquid through the nozzle 17 post naet through the rear end (in the drawing until it is 4) of the flushing tube 3 into the central hole 14 of the intermediate striker 5. Then the flushing fluid is kept from getting into the perforator by the cuff 15 and the sealing elements 11 and 13, flows through the Central channel 10 of the drilling tool 9 to the bottom of the well. The use of a sealing element that encloses the end of a drilling tool eliminates leakage of flushing fluid, reduces its flow while maintaining constant pressure all the way to the bottom of a well. In addition, the installation of additional elements adjacent the wall of the centering recess and the outer surface of the shank of the drilling tool, as well as between the outer surface of the intermediate bed and the towing box and the outer wall of the propelling tube in the intermediate head completely excludes the flushing liquid from entering the inside of the perforator. Due to the installation of sealing elements at the bottom of the well, it is possible to supply a flushing fluid with a pressure greater than |) working pressure of the compressed air punch. This will improve the efficiency of the flushing of the well and increase the drilling rate. Claim of the invention A rotary hammer comprising a housing with a hammer, a rotary assembly with a granbuxa, an intermediate head, a drilling tool and a flushing tube, characterized in that, in order to increase the reliability and durability of the perforator, a piercer, characterized in that, in order to increase the reliability and durability of the perforator, a drilling tool and a flushing tube are used. the middle of the striker pivot is made with a centering recess with a bathroom element in its wall for mounting the drilling tool. Sources of information taken into account in the examination 1. Germany patent number 1111579, cl. 5 in 9/04, pub. 1961. 2. Begagoen I. A. and others. Boring machines. M., Nedra, 1972, p. 205-208 p. 5-3 (prototype).