CN-122014117-A - Umbrella type hydraulic reaming mechanism

CN122014117ACN 122014117 ACN122014117 ACN 122014117ACN-122014117-A

Abstract

The invention relates to the technical field of drill rod reaming, and discloses an umbrella-type hydraulic reaming mechanism, wherein a final drill rod comprises a front rod piece, a middle rod piece and a rear rod piece which are fixedly connected in sequence; the rear part of the reaming assembly is movably connected with the supporting driving assembly after extending into the tail section drill rod through the avoiding groove in the rear movable connecting groove, and the supporting driving assembly is used for driving the reaming assembly to open or close. The invention has compact structure, the support driving component is integrated in the hollow drill rod, the support driving component is prevented from being exposed outside, the interference with the hole wall is prevented, the corrosion and clamping of drilling fluid and impurities into the drill rod are prevented, the service life of the components is prolonged, and the rod pieces are convenient to assemble and disassemble, the damaged reaming component can be replaced, and the maintenance cost is reduced.

Inventors

CHENG SHIYANG
TANG ZHI
HUANG AIXIN
YAN NING
YU MINGQIU
WANG ZIAN
Gou Shifang
WANG CHUANGHUI

Assignees

辽宁工程技术大学鄂尔多斯研究院

Dates

Publication Date: 20260512
Application Date: 20260413

Claims (8)

1. The umbrella type hydraulic reaming mechanism comprises a final section of drill rod and is characterized in that the final section of drill rod comprises a front rod piece, a middle rod piece and a rear rod piece which are fixedly connected in sequence; the front end of the front rod piece is fixedly provided with a drill bit, and the inside of the tail section of drill rod is fixedly provided with a support driving assembly; A plurality of groups of front movable connecting grooves are distributed at equal intervals in a circular shape at the joint of the front rod piece and the middle rod piece, a plurality of groups of rear movable connecting grooves are distributed at equal intervals in a circular shape at the joint of the middle rod piece and the rear rod piece, a reaming assembly is movably connected between the front movable connecting grooves and the corresponding rear movable connecting grooves, and a reinforcing auxiliary piece in sliding connection with the middle rod piece is arranged in the middle of the reaming assembly; the rear part of the reaming assembly is movably connected with the support driving assembly after extending into the tail section drill rod through the avoidance groove in the rear movable connecting groove, and the support driving assembly is used for driving the reaming assembly to open or close.
2. The umbrella hydraulic reaming mechanism of claim 1, wherein the front rod comprises a front rod, the middle rod comprises a middle hollow rod, and the rear rod comprises a rear hollow rod; The front end of the front end rod body is provided with an internal threaded hole, the rear end of the drill bit is provided with an external threaded column, and the external threaded column is in threaded connection with the internal threaded hole; the middle hollow rod body is fixedly connected with the front end rod body and the rear end hollow rod body respectively through long screws at two ends of the middle hollow rod body.
3. The umbrella type hydraulic reaming mechanism of claim 2, wherein the rear end of the front rod body is provided with a plurality of groups of first arc-shaped grooves at equal intervals in a circular shape; the front end of the middle hollow rod body is circular, a plurality of groups of second arc-shaped grooves are arranged at equal intervals, and the rear end of the middle hollow rod body is circular, a plurality of groups of third arc-shaped grooves are arranged at equal intervals; the front end of the rear end hollow rod body is circular and is provided with a plurality of groups of fourth arc-shaped grooves at equal intervals; the front movable connecting groove is formed by matching a first arc-shaped slot with a corresponding second arc-shaped slot, and the rear movable connecting groove is formed by matching a third arc-shaped slot with a corresponding fourth arc-shaped slot; The third arc-shaped slot is internally provided with a front section slot, the fourth arc-shaped slot is internally provided with a rear section slot, and the avoiding slot is formed by matching the front section slot with the corresponding rear section slot.
4. The umbrella-type hydraulic reaming mechanism of claim 3, wherein a first protruding block is arranged between every two adjacent first arc-shaped grooves, and a second protruding block is arranged between every two adjacent fourth arc-shaped grooves; an inner groove is arranged between every two adjacent second arc-shaped grooves and between every two adjacent third arc-shaped grooves; the first protruding block and the second protruding block are respectively inserted into the corresponding inner grooves.
5. The umbrella type hydraulic reaming mechanism of claim 1, wherein the reaming assembly comprises a front rotating disc movably connected in a front movable connecting groove, a mounting plate fixed on the front rotating disc by adopting a connecting block, a reaming plate fixed on the mounting plate, a driving rod movably connected with a connecting lug plate at the rear part of the mounting plate and a rear rotating disc movably connected in a rear movable connecting groove; the driving rod penetrates through the penetrating hole in the rear rotating disc to extend out.
6. The umbrella type hydraulic reaming mechanism of claim 5, wherein the middle part of the middle rod piece is circular, the middle part is provided with convex seats at equal intervals, an arc-shaped reinforcing plate is connected between the adjacent convex seats, and an arc-shaped chute is arranged inside the convex seats; The reinforcing auxiliary piece comprises a fixed support fixed on the hole expanding plate and an arc reinforcing sliding block fixed on the fixed support, and the arc reinforcing sliding block is in sliding connection with the corresponding arc sliding groove.
7. The umbrella type hydraulic reaming mechanism of claim 5, wherein the inner wall of the reaming plate is provided with an inner concave clamping groove for fixing the mounting plate, and the outer wall surface of the reaming plate is provided with reaming protrusions; the outer side end of the driving rod is movably connected between the connecting lug plates by a pin shaft.
8. The umbrella-type hydraulic reaming mechanism of claim 5, wherein the support driving assembly comprises a front fixed ring, a rear mounting plate fixed at the rear end of the front fixed ring by adopting a plurality of groups of arc-shaped support plates distributed at equal intervals, a hydraulic cylinder centrally fixed at the rear end of the rear mounting plate and a movable seat fixed by a piston rod at the output end of the hydraulic cylinder; The movable seat is provided with a plurality of groups of U-shaped seats at equal intervals, the U-shaped seats are in sliding connection between adjacent arc-shaped supporting plates, the inner side end of the driving rod stretches into the avoidance groove and then is fixedly provided with a sliding rod, and two ends of the sliding rod are in sliding connection with inclined sliding grooves on the U-shaped seats.

Description

Umbrella type hydraulic reaming mechanism Technical Field The invention relates to the technical field of drill rod reaming, in particular to an umbrella type hydraulic reaming mechanism. Background In drilling reaming operation, the reaming mechanism who connects on the current drilling rod and be used for driving the open drive assembly of reaming mechanism generally have the loose, the bigger problem of volume, reaming mechanism and drive assembly expose outside the drilling rod more, easily receive drilling fluid, impurity erosion and easily interfere with the pore wall, and reaming mechanism, drive assembly and drilling rod junction have fluting gap, during the reaming operation, drilling fluid, impurity card easily go into the drilling rod. Meanwhile, the joint of the reaming mechanism is easy to loosen due to vibration, the disassembly and assembly of parts are inconvenient, and the maintenance cost is high. For this purpose, we propose an umbrella type hydraulic reaming mechanism. Disclosure of Invention The invention aims to provide an umbrella type hydraulic reaming mechanism which is used for solving the problems in the background technology. In order to achieve the above purpose, the present invention provides the following technical solutions: an umbrella type hydraulic reaming mechanism comprises a final section of drill rod, wherein the final section of drill rod comprises a front rod piece, a middle rod piece and a rear rod piece which are fixedly connected in sequence; the front end of the front rod piece is fixedly provided with a drill bit, and the inside of the tail section of drill rod is fixedly provided with a support driving assembly; A plurality of groups of front movable connecting grooves are distributed at equal intervals in a circular shape at the joint of the front rod piece and the middle rod piece, a plurality of groups of rear movable connecting grooves are distributed at equal intervals in a circular shape at the joint of the middle rod piece and the rear rod piece, a reaming assembly is movably connected between the front movable connecting grooves and the corresponding rear movable connecting grooves, and a reinforcing auxiliary piece in sliding connection with the middle rod piece is arranged in the middle of the reaming assembly; the rear part of the reaming assembly is movably connected with the support driving assembly after extending into the tail section drill rod through the avoidance groove in the rear movable connecting groove, and the support driving assembly is used for driving the reaming assembly to open or close. Preferably, the front rod piece comprises a front rod body, the middle rod piece comprises a middle hollow rod body, and the rear rod piece comprises a rear hollow rod body; The front end of the front end rod body is provided with an internal threaded hole, the rear end of the drill bit is provided with an external threaded column, and the external threaded column is in threaded connection with the internal threaded hole; the middle hollow rod body is fixedly connected with the front end rod body and the rear end hollow rod body respectively through long screws at two ends of the middle hollow rod body. Preferably, the rear end of the front end rod body is circular and is provided with a plurality of groups of first arc-shaped grooves at equal intervals; the front end of the middle hollow rod body is circular, a plurality of groups of second arc-shaped grooves are arranged at equal intervals, and the rear end of the middle hollow rod body is circular, a plurality of groups of third arc-shaped grooves are arranged at equal intervals; the front end of the rear end hollow rod body is circular and is provided with a plurality of groups of fourth arc-shaped grooves at equal intervals; the front movable connecting groove is formed by matching a first arc-shaped slot with a corresponding second arc-shaped slot, and the rear movable connecting groove is formed by matching a third arc-shaped slot with a corresponding fourth arc-shaped slot; The third arc-shaped slot is internally provided with a front section slot, the fourth arc-shaped slot is internally provided with a rear section slot, and the avoiding slot is formed by matching the front section slot with the corresponding rear section slot. Preferably, a first protruding block is arranged between every two adjacent first arc-shaped grooves, and a second protruding block is arranged between every two adjacent fourth arc-shaped grooves; an inner groove is arranged between every two adjacent second arc-shaped grooves and between every two adjacent third arc-shaped grooves; the first protruding block and the second protruding block are respectively inserted into the corresponding inner grooves. Preferably, the reaming assembly comprises a front rotating disc movably connected in the front movable connecting groove, a mounting plate fixed on the front rotating disc by adopting a connecting block, a reaming