CN203769684U - Mining screw thread type polished drill pipe connection guiding device - Google Patents

Abstract

The utility model discloses a mining screw thread type polished drill pipe connection guiding device. The mining screw thread type polished drill pipe connection guiding device comprises a sleeve, wherein the sleeve comprises two separated type semicircular flanged sleeve bodies; two sides of each semicircular flanged sleeve body are respectively connected with fixed plates which are integrally connected with the semicircular flanged sleeve body; each fixed plate is provided with a mounting hole; and the semicircular flanged sleeve bodies are connected with each other through the mounting holes so as to form the sleeve. The two semicircular flanged sleeve bodies which have the same structures are fixedly combined, so that the sleeve of which the diameter is matched with the outer diameter of a drill pipe is formed; and the requirement on the coaxiality of two drill pipes is met by a guiding effect of the sleeve, so that a phenomenon that polished drill pipes deviate when drilling in a lithosphere can be effectively prevented.

Description

Mining screw-type polished rod drill pipe connecting guide device

technical field

The utility model relates to the field of machinery, in particular to a mine-used screw-type polished rod drill pipe connecting guide device.

Background technique

In coal mining, gas outburst has become a major factor affecting production safety in major coal-producing countries around the world. At present, the effective way to solve the problem of gas outburst is to adopt the technology of drilling and perforating gas pre-pumping. However, in actual working conditions, there will be rock layers with different thicknesses and uneven textures outside the coal seam. At this time, it is necessary to use a screw-connected polished rod drill pipe to cooperate with an alloy drill bit for drilling. For example, when using ZDY series drilling rigs to drill in rock formations, the motor transmits power to the power head through the pump station, and then to the alloy drill bit through the drill pipe. Chips and debris are washed out of the hole with the water flow. The inclination angle of the drill hole is adjusted by the main column. However, due to the uneven texture of the rock layer, it is easy to cause the drill pipe to deviate during drilling, so that the coaxiality of the front and rear drill pipes The error increases, and it is difficult to meet the coaxiality requirements through the adjustment of the main column, and it is difficult to connect the drill pipe.

Contents of the invention

The purpose of this utility model is: to provide a mine-used screw type polished rod drill pipe connection guide device, which can effectively prevent the polished drill pipe from running off when drilling into rock layers, so as to overcome the deficiencies in the prior art.

The utility model is realized in the following way: the connection and guiding device for the mine threaded polished rod drill pipe includes a sleeve, and the sleeve is two split-type semicircular flange sleeves, and each semicircular flange sleeve Both sides of the two sides are provided with a fixed piece connected with it, and each fixed piece is provided with a mounting hole, and the semicircular flange sleeve is connected through the mounting hole to form a sleeve.

There are more than 2 mounting holes arranged on the fixing pieces on each side. The number of mounting holes is selected according to the length of the sleeve and the need for fixing, the purpose of which is to ensure the reliability of the connection between the two sleeves.

Due to the adoption of the above technical solution, compared with the prior art, the utility model utilizes two semicircular flange sleeves with the same structure to be combined and fixed to form a sleeve matching the outer diameter of the drill pipe. The guiding function of the sleeve is to ensure the coaxiality requirements between the two sections of the drill pipe, thereby effectively preventing the deviation of the polished drill pipe when drilling in the rock layer. The utility model has the advantages of simple structure, low cost and good use effect.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model;

Accompanying drawing 2 is the structural representation of semicircular flange sleeve of the present utility model;

Accompanying drawing 3 is the top view of accompanying drawing 2;

Accompanying drawing 4-6 is the schematic diagram of the application process of the utility model.

Detailed ways

Embodiment of the present utility model: the structure of the mining screw type polished rod drill pipe connection guide device is shown in Figure 1, including a sleeve 1, and the sleeve 1 is two split semicircular flange sleeves 2 (such as As shown in Figure 2), there are fixed pieces 3 connected with it on both sides of each semicircular flange sleeve 2, and two mounting holes 4 are provided on each fixed piece 3 (as shown 3), the semicircular flange sleeve 2 is connected through the installation hole 4 to form the sleeve 1.

During specific use, when the drill pipe A is drilled into the rock layer, as shown in Figure 4, when the coaxiality deviation between the drill pipe A and the drill pipe B is too large; first, as shown in Figure 5, the two paired The semicircular flange sleeve 2 of the drill pipe A and drill pipe B is placed at the joint of the internal and external threads of the drill pipe A and B; The coaxiality of the lower drill pipe A and the drill pipe B satisfies the connection requirements, as shown in Figure 6; finally start the motor, and advance with the rotation of the power head, under the guidance of the utility model, the drill pipe A and the drill pipe B is successfully connected.

Claims (2)

1. a mining screw thread type polished rod drilling rod connects guiding device, comprise sleeve (1), it is characterized in that: sleeve (1) is two split type semicircular flanges sleeves (2), in the both sides of each semicircular flanges sleeve (2), be equipped with the stator (3) being connected as a single entity with it, on each stator (3), be provided with installing hole (4), semicircular flanges sleeve (2) connects to form sleeve (1) by installing hole (4).

2. mining screw thread type polished rod drilling rod according to claim 1 connects guiding device, it is characterized in that: the upper installing hole (4) arranging of stator (3) in every side is more than 2.