SU113889A1 - Burov installation - Google Patents

Description

In the well-known drilling rigs for rotationally-pump-free dr; rhenium, the rotation of the tool is carried out simultaneously with its periodic raising to a certain height above the face (ramping of the tool). However, this process is performed manually and non-rhythmically, which is its disadvantage.

In the proposed drilling rig, this deficiency is eliminated by the use of a blade friction mechanism intended for pacing the tool, together with the driven wheel of this mechanism, loaded through a chain gear with the weight of the drilling tool. The use of a blade friction mechanism allows one to achieve a rhythmic pacing of the tool while simultaneously rotating it with a half-hole of the drill string over the face.

This eliminates the need for muscular strength, which increases labor productivity and the quality of the core, and also makes it possible to reduce the composition of the drilling crew.

FIG. 1 schematically shows a drilling rig; Fig 2 is a diagram of the feed mechanism; in fig. 3 - kinematic installation diagram.

On a two-axle trailer / (Fig. 1), an electric motor 2, a gearbox 5, a winch with a drum 4, a rotor 5, a pump 6, a feed mechanism 7. a ramming mechanism 8 and a mast 9 are mounted. connected to the lower shaft 12 of the tool feeder. Through the bevel gear train / 5, located in the gearbox, the sector M rotates, which is engaged with the driven wedge wheel and turns it through a certain angle, the value of which depends on the size of the central angle of the sector.

When the blade wheel is rotated, the tool, being pr: and connected to the chains of the feed mechanism, rises above the face to a height corresponding to the central angle of the sector. When the sector leaves the engagement with the driven bladed wheel, the tool drops around 113889

on the bottom, and the driven blade wheel turns to its original position under the weight of the tool. To create the necessary reinforcement, at the moment of the clutch of the wedge wheels, the driving sector is constantly under the action of the spring 15,

To regulate the downhole pressure, a drum 16 with several turns of cable 17 is attached to the driven bladed wheel, the free end of which is passed through a system of rollers 18 and roller 19 on the boom 20. A weight is suspended at the end of the rope, thereby creating a torque driven sausage shaft and, respectively, on the lower shaft of the tool feed mechanism. The torque causes tension through the chain sprockets 21 of the feed mechanism chains 22 and thereby loads the tool 23 additionally attached to the chains. The tension on the tool chains is transmitted through the gland - swivel 24,

This burbwa installation is used in geological engineering surveys.

Subject invention

Claims (3)

1. Burov installation of rotary pumpless drilling, characterized in that, in order to achieve a rhythmic raskazhivani tool with the simultaneous rotation of it, used the friction-vane mechanism. 2. The form of execution of the drilling rig according to claim 1, which is different from the fact that the friction mechanism is made with the leading part in the form of a sector that enters during rotation into engagement with the driven wheel, after turning it at a certain angle, the driven wheel is freed from torque and returns to the starting position. 3. The form of the drilling rig in PP. 1 and 2, characterized in that the driven shaft of the bladed friction mechanism is loaded through a chain gear by the weight of the drilling tool. .f fs: f / fj ff f e isf i -iif-9 f f f4f Fig-1 IT- "