CN201078192Y

CN201078192Y - Well-digging core drill

Info

Publication number: CN201078192Y
Application number: CNU2007201777997U
Authority: CN
Inventors: 仲秀
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-09-20
Filing date: 2007-09-20
Publication date: 2008-06-25
Anticipated expiration: 2017-09-20

Abstract

A well core drill is provided, which relates to a well drilling tool and pertains to the field of drilling in fixed constructions; the well core drill comprises a catcher, a drill stem, and a core barrel; the utility model is characterized in: the upper part of the drill stem is connected to the catcher, and the lower part of the drill stem is connected to a spline cylinder head; the lower part of the spline cylinder head is connected to an external spline bushing with an internal spline shaft; an elastic anti-disengage wire is arranged on the lower part of the internal spline shaft, and the bottom of the internal spline shaft is a square shaft; a fixed pulley is mounted on the wall of the core barrel, and a core stop door is arranged on the inner wall of the core barrel; one end of the steel rope is fixed on the internal spline shaft, and the other end of the steel rope is fixed below the core stop door; a plurality of drifter drills are mounted on the bottom of the core barrel, and are covered with a pipe cover respectively; a square hole is arranged at the center of each pipe cover, and is in tight fit to the square shaft of the internal spline shaft; vent holes are arranged on each pipe cover, and a water channel is arranged on outer side of the core barrel.. The utility model provides a well core drill for well drilling, which is simple in structure, power and labor saving, and can accelerate working progress and improve success ratio..

Description

The well-digging core bit

(1) technical field

The utility model relates to a kind of sink wells instrument, belongs to the field of creeping in the fixed buildings.

(2) technical background

Sink wells mostly creep into method with centreless at present, for the bellwether drilling rod is the 89mm heavy wall, drill bit also is the rock bit on the oil-well rig with the oil drilling, and a drilling rod single pole is with regard to more than 300 jin, one, two tons of weights of a drill bit, the equipment of pulling, rig, water pump, instrument are too heavy; Complex structure, expense power, expense manpower, drilling depth are slow and usually be through many man-hours, if when running into water layer, because the sandstone of getting etc. can not take out, mud is stuck with paste blocked water layer, the still dry well of getting, waste person property power.

(3) summary of the invention

The purpose of this utility model provide a kind of simple in structure, save power artificial, improve job schedule, the high well-digging core bit of well-digging success rate.

The purpose of this utility model is achieved in that

The well-digging core bit, comprise catcher, drilling rod, core barrel, the top that it is characterized in that drilling rod is connected with catcher, the bottom is connected with the spline tube head, a delivery port and wire rope retainer ring are arranged on the spline tube head, the bottom of spline tube head is connected with the external splines cover, in the external splines cover female splined shaft is arranged, in the recess bottom of female splined shaft anti-disconnection elastic yarn is arranged all, the bottom of female splined shaft is a square shaft, a fixed pulley is arranged on the tube wall bottom of core barrel, the inwall of core barrel has one to block the core door in the fixed pulley bottom, wire rope one end is fixed on the wire rope retainer ring, by fixed pulley with block the core door pivot, the other end is fixed on and blocks core student side, several air drill drill bits are equipped with in the bottom of core barrel, the core barrel lid is arranged above core barrel, the SMIS that core barrel covers has a square hole, the square shaft tight fit of this square hole and female splined shaft, pipe has covered steam vent, on the tracheae that runs in, in the core barrel outside cooling and lubricating water route is arranged, a water inlet is arranged at core barrel top, and this water inlet links to each other with the cooling and lubricating water pipe, and links to each other by pipeline with water inlet on the spline head.

Because the utility model well-digging core bit has adopted said structure, realized saving power, artificial, provide job schedule and well-digging success rate also to improve greatly.

(4) description of drawings

Fig. 1 is the structural representation of the utility model embodiment 1.

(5) specific embodiment

The well-digging core bit, comprise catcher 1, drilling rod 2, core barrel 19, the top that it is characterized in that drilling rod 2 is connected with catcher 1, the bottom is connected with spline tube head 3, a delivery port 4 is arranged on the spline tube head 3, also has a wire rope retainer ring 16 on the spline tube head 3, the bottom of spline tube head 3 is connected with external splines cover 6, in the external splines cover 6 female splined shaft 5 is arranged, in the recess bottom of female splined shaft 5 anti-disconnection elastic yarn 8 is arranged all, the bottom of female splined shaft 5 is a square shaft 18, a fixed pulley 20 is arranged on the tube wall of core barrel 19, the inwall of core barrel 19 has a horizontal core door pivot 21 that blocks below fixed pulley 20, be equipped with on the axle and block core door 22, wire rope 17 1 ends are fixed on the wire rope retainer ring 16, by fixed pulley 20 with block core door pivot 21 other ends and be fixed on and block core door 22 belows, several air drill drill bits 14 are equipped with in the bottom of core barrel 19, the top of core barrel 19 has pipe to cover 9, covered steam vent 13, stack 7 is arranged on the pore 13, and there is cooling and lubricating water route 12 outside of core barrel 19, on the tube wall of the upper end in cooling and lubricating water route 12, a water lines port 11 is arranged, and this port 11 is connected with pipeline 10 with delivery port on the external splines head

Also be equipped with a thresholding 15 in core barrel 19 inside.

When the utility model drilling tool is worked, male splined shaft and core barrel creep into downwards clockwise on the drilling rod, put the key that the disconnection elater withstands the external splines tube, external splines disconnects in preventing, with since core barrel be cannulated, bore moving soil, sandstone etc. enter core barrel, by the time after a certain amount of, promptly need the soil in the core barrel, taking-ups such as sandstone rotate counterclockwise drilling rod this moment, the straight anti-disconnection elater in external splines tube top, promote the external splines tube, external splines tube and female splined shaft disconnect, and wire rope upwards draws, make and block the core door around blocking the also upwards rotation of core door pivot, thereby reach the purpose of closing the door, just the sandstone in the core barrel is blocked, at the bottom of ground, propose to unload, creep into next time, finish until work.

Claims

1. well-digging core bit, comprise catcher, drilling rod, core barrel, the top that it is characterized in that drilling rod is connected with catcher, the bottom is connected with the spline tube head, a delivery port and wire rope retainer ring are arranged on the spline tube head, the bottom of spline tube head is connected with the external splines cover, in the external splines cover female splined shaft is arranged, in the recess bottom of female splined shaft anti-disconnection elastic yarn is arranged all, the bottom of female splined shaft is a square shaft, a fixed pulley is arranged on the tube wall bottom of core barrel, the inwall of core barrel has one to block the core door in the fixed pulley bottom, wire rope one end is fixed on the wire rope retainer ring, by fixed pulley with block the core door pivot other end and be fixed on and block core student side, several air drill drill bits are equipped with in the bottom of core barrel, the core barrel lid is arranged above core barrel, the SMIS of core barrel lid has a square hole, the square shaft tight fit of this square hole and female splined shaft, core barrel has covered steam vent, be connected to stack on the steam vent, the cooling and lubricating water route arranged, on the tube wall of the upper end in cooling and lubricating water route in the core barrel outside, a water lines port is arranged, and this port is connected with pipeline with delivery port on the external splines head.