SU1317083A1 - Apparatus for rotary-percussive drilling - Google Patents

Abstract

The invention relates to the field of mining and reduces the vibration transmitted to the device body 1. It hosts the leading 2 and driven 3 shafts and the shock mechanism. It is made rigidly connected to the shaft 3 of the main anvil (H) 4 and mounted on the shaft 2 and fixed from the level in the body I of an additional H 18. On the H 4 and 18, the cams (K) I and 24. The main 9 and additional 26 percussion valves (U) of the percussion mechanism have response K 12 and 25, spring-loaded with working springs 10 and 27. Spring 10 is placed between Y 9 and H 18. Rotation from shafts 2 and 3 is transmitted to H 4. At that H 18 is clamped to the retainer 21. When K 12 is raised to K II, the rising U 9 presses the spring 10. The rotation U 26 in It causes its movement in the direction of pressing the spring 27. The transition of K 12 from one K 11 to another, as well as K 25 from one K 24 to another creates axial shock impulses. The working impulse U 9 acts on shaft 3, and its reactive impulse to H 18 is quenched by a working impulse U 2G. 1 hp f-ly, 2 ill. С /) 4 7Г J2 9 76 (rig / 70 23202161 7 27 28 ОО о 00 with 4rff} e24 5 6

Description

The invention relates to the design of percussion drilling devices used to form holes in non-metallic materials in construction for drilling wells, in mining and other parts of the national economy of the country.

The purpose of the invention is to reduce the vibration transmitted to the housing during operation of the device in the mode of percussion-rotational drilling.

FIG. 1 shows a device for percussion drilling, longitudinal section; in fig. 2 - device with anvils displaced one against the other.

After switching on the drive (not shown), rotation from shaft 2 is transmitted through pins 7 to shaft 3. Together with shaft 3, the anvil 4 rotates. Since spring 27 is weaker than spring 10, the anvil 18 is pressed against the retainer 21 by abutting the end 23 of the groove 20.

The device consists of a housing 1 in which a drive shaft 2, a driven shaft 3 with an anvil 4 and with a working 1H) dexterous 5 in the form of a cone chambered for fastening a working tool (not shown) are connected, 20 are attached. With the shaft 2, by means of the sliding lobe 11 of the anvil 4, the drummer 9, sub-groove 6 of the key 7, pressed into the shaft 2, nimbles and presses the spring 10. When the hole 6 of which is driven by the rotation of the same drummer 26 lifts its smoke, the drummer 9, is spring loaded towards the cams 25 on the surface of 29 cams 24 anvils 4 by a working spring 10. The movement of the striker 26 in standing 4 has nak-25, and there are face cams AND, RO-RO. Press the springs 27. The transition is curved towards the counter cams 12 from one cam And to the other 12 striker 9. Slave shaft 3 is mounted on a steeply collapsing section 34, and the cam is in a bearing 13 and spring 25 together from one cam 24 to another kulavilna 4 relative to it by a spring 24 along a steeply extending section created between the anvil 4 and 30 Gives axial shock impulses moreover, the bearing 13, and the spring 15, pa The serpentine impulse of the impactor 9 acts as a chip between the driven shaft 3 and the subtype of the shaft 3 with the working head 5, and a reagent 13. The spring 10 is fixed to the front of its impulse applied to the anvil end of the GB on the impactor 9, and at the rear 8, quenched by a working impulse with a shock 17 - on an additional anvil 26, working in parallel with the impact 18, the diameter of which is less than the inner 3535 9.

the diameter of the housing 1, with the formation of a gap The device according to FIG. 2 works ana19. In the anvil 18 is made longitudinal. Cams 24 relative 20, in which is placed the latch 21, body cams And leads to the fact that

fixed in the housing 1, prevent the given impulse of the impactor 26 acts

rotation of the anvil 18 relative to 40 anvil 18 at the time of actuation

Shells 1. The ends 22 and 23 of the groove 20 of the ograni-main drummer 9, i.e. at the moment of maximum reactive moment. All this, along with the means of vibration damping (springs) 14 and 15, sharply reduces vibrations.

Axial movements of the anvil 18 relative to the housing 1 are made, and the length of the groove 20 is calculated on the jet pulse of the striker 9 and is adjusted depending on the parameters of the device and the percussion mechanism. The anvil 18 has face cams 24 facing towards the counter cams 25 of the additional drummer 26 spring-loaded to the anvil 18 of the spring45

the moment of its reactive moment. All this, along with the means of vibration damping (springs) 14 and 15, sharply reduces vibrations.

Claims (2)

1. A device for impact-rotational drilling, comprising a housing and driving and driven shafts accommodated therein, 27, placed between the impactor 26 Q, the percussion mechanism in the form of rigidly connected and the thrust bearing 28, fixed with the driven shaft of the main anvil, in the housing 1. The cams 11 and 24 are equal in size to the anvil. The rise of the surface 29 of the anvil 18 of the percussion hammer with counterpart cam is in contact with shocks on them by the cams, the primary surface and the additional 26 are oriented in the same direction with the lifts springed by the working springs that are in contact with the drummer 9 through 55 elastic vibration protection element The surface 30 of the anvil 4 is located. At the same time, the body 30 between the main anvil and the body 30 has a decrease in the direction of the turn, characterized in that, in order to reduce the shaft 2, and the surface 29 has a shine working spring base in the opposite direction, with the heights of the cams 24 and 25 also calculated on the jet pulse of the impactor 9, as well as the spring 27 with the impactor 26. The device shown in FIG. 2, characterized in that the cams 24 with their apexes 31 and steeply falling portions 32 are displaced relative to the cams 11 s and; by the vertices 33 and steeply falling sections 34 by the value a in the direction opposite to the rotation. The value of a depends on the parameters of all considered nodes. The device works as follows. After switching on the drive (not shown), rotation from shaft 2 is transmitted through pins 7 to shaft 3. Together with shaft 3, the anvil 4 rotates. Since spring 27 is weaker than spring 10, the anvil 18 is pressed against the retainer 21 by abutting the end 23 of the groove 20. When the jaws 12 of the striker 9 are fanged on the jaws 11 of the anvil 4, the striker 9 rises and presses the spring 10. When the striker 26 rotates, the raising of its cleats 25 along the surface 29 of the jaws 24 causes the striker 26 to move to the position of the spring 27. - a 12 cam from one cam And to another on a steeply falling section 34, and a cam 25 from one cam 24 to another to another 24 along a steeply falling section, creates axial shock pulses, and the working impulse of the impactor 9 acts on the shaft 3 with a working head 5, and its reactive impulse applied th to nakoval- not 8, quenched working pulses udarni- and 26, working in parallel with udarni- com 9. The main drummer 9, i.e. at maxi moment 45 the moment of its reactive moment. All this, along with the means of vibration damping (springs) 14 and 15, sharply reduces vibrations. Invention Formula A striker is placed between it and the additional anvil, which is mounted on the drive shaft and secured against rotation in the housing. 2. A device according to claim 1, characterized in that the cams of the additional anvil are offset relative to the cams of the main anvil. Compiled by G. Sovietov Tehred I. Veres Corrector A. Zimokosov Circulation 532 Subscription VNIIPI USSR State Committee for Inventions and Discoveries 1 13035, Moscow, Zh-35, Raushsk iab., 4/5 Production and Printing Enterprise, Uzhgorod, ul. Project, 4