SU735762A1 - Rotary-percussive drilling machine - Google Patents

Description

(54) MACHINE OF SHOCKING AND ROTATING ACTION

one

The invention relates to the field of the mining industry, in particular, to shock-vrash machines, for action for drilling holes and small-diameter wells, but can be used in the construction and other industries.

Hydraulic impact machines are known in which acceleration of the striker prior to impact with the working tool is carried out by a plunger on which the working fluid acts. The fluid under the plunger is fed through a special dispenser device with forced drive 1.

The disadvantages of this hydraulic shock mechanism are the complexity of the brisk control system, due to the presence of the plunger pair and the switchgear.

The closest in technical essence. and the achieved result to the proposed machine is a shock-vrash machine, of action, comprising a housing in which a firing pin, kinematically interconnected with a rotational drive, mounted with its slots on its surface and forming with walls

casing upper and lower chambers of variable volume 2.

The aim of the invention is to simplify the design of the machine and its manufacturing technology. This is achieved by the fact that the grooves on the striker are parallel to its longitudinal axis, are permanently connected to the upper chamber of variable volume and have the ability to periodically communicate with windows for supplying and draining energy

10 are made in the machine body.

FIG. 1 and FIG. 2 shows schematically the embodiments of the machine; in fig. 3 shows section A-A in FIG. one; in fig. 4 shows a section BB in FIG. one; in fig. 5, node I in FIG. one.

Claims (2)

The percussion-rotary action machine includes a housing I, in which windows for supplying 2 and draining 3 energy carriers (working fluid) and channel 4 are made. In housing 1, the striker 5 is movably mounted, on the surface of which grooves 6, 20 are arranged parallel to the longitudinal axes of the striker 5. Between the housing 1 and the striker 5 there is a seal made of the ring 7 and the protective washer 8. The striker 5 forms with the housing 1 the upper 9 and the lower 10 of the variable volume chamber. The grooves 6 of the striker 5 are constantly in communication with the upper chamber 9 and have the possibility of periodically communicating with the windows 2 and 3. The striker 5 is kinematically interconnected with the rotational drive 11. The rotational drive consists of the drive motor 12, the gearbox with the scraper 13 and 14, and the kinematic The rotational drive of the rotational head 5 can be made through the coupling half 15, which is supported by a thrust bearing 16, which receives the axial force from the tool 17. The machine works as follows. The working fluid from the pump is fed to window 2 and through channel 4 to the lower chamber 10 of variable volume. The rotation from the actuator 11 is transmitted to the striker 5. When the window 2 is combined with the groove 6 of the striker 5, the working fluid enters the upper chamber 9. Since the surface area of the striker 5 in the upper chamber 9 is larger than the surface of the striker 5 in the lower chamber 10, the striker 5 starts accelerated movement in the direction of the destructible medium, while displacing the liquid from the lower chamber 10 through channel 4 into the discharge line. At the end of the working stroke, the rotation of the rotating hammer 5 with the destroyed medium occurs. Work is useful. At the time of the impact, the face 5, as a result of the rotation, closes the window 2 and aligns the groove 6 with the window 3 to drain the energy carrier. Under the action of a constant force, the striker 5 begins to move to the upper position, while displacing the fluid from the upper chamber 9 into the drain line. At the end of the idle stroke, the window 2 is again aligned with the groove 6 of the striker 5, and the cycle is repeated. The frequency of cycles (strokes) depends on the number of slots in the striker and on the number of revolutions. The machine shown in FIG. 2, works as follows. When the drive motor 12 is turned on from its shaft, the rotation is transmitted to the gear 14 and the tool 17. When the axial force necessary for drilling occurs, the end surface of the pinion 14 is pressed against the coupling half 15, and through it to the bearing 16. Due to the forces of rotation, the rotation is transmitted to the striker 5 Further operation of the machine goes through the above cycle. The invention is a shock-rotational action machine, comprising a body in which a firing pin interposed kinematically interconnected with a rotational drive, made with grooves on its surface and forming an upper and lower chamber of variable volume with the walls of the body, characterized in that in order to simplify the construction of the maschina and its manufacturing technology, the grooves on the striker are parallel to its longitudinal axis, are constantly in communication with the upper chamber of variable volume and have: us for the supply and discharge of energy, which are made in the housing maschiny. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 194024, cl; E 21 C 3/20, 1965. 2. USSR author's certificate number 317784, cl. E 21 C 1/12. 1970. Rig.1. and r. 2 Fi (. 3 in-in iga