CN2217682Y

CN2217682Y - Drilling device for cobble and gravel

Info

Publication number: CN2217682Y
Application number: CN 94213248
Authority: CN
Inventors: 李怀智; 李松林
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-06-04
Filing date: 1994-06-04
Publication date: 1996-01-17
Anticipated expiration: 2004-06-04

Abstract

The utility model relates to a drilling device for cobble and gravel, which is suitable for drilling and extracting cores from cobble and gravel layer with large caliber. The utility model can simultaneously realize rotary drilling and core extraction during one drilling process. The utility model adopts double-pipe structure, and a gear and rack bars are arranged on the inner wall of an outer pipe. A driving rack bar and a driven rack bar can slide in a dovetail groove on the inner wall of the outer pipe, the motion of the driving rack bar drives the gear to rotate by a power transmission groove on the outer wall of an inner pipe and a power transmission pin on the driving rack bar, and thus, the driven rack bar is driven to move, a mechanical finger is driven to extend and contract, and the purpose of core extraction is realized. When an extension shaft carries out the anticlockwise rotation corresponding to the outer pipe, a lock pin is screwed in a locking channel of a sliding conduct pipe, relative movement between the inner and the outer pipes is provided, and the mechanical finger is hidden between the inner and the outer pipes and keeps a guarded state.

Description

The ovum gravel drills through device

The utility model relates to a kind of novel coring apparatus of drilling usefulness, and core drilling work is one of geological prospecting industry great difficult problem of capturing always.At present, small-bore probing often takes circlip type to grab the spring formula or the sand of going to river is cored.Grab the spring formula and only can block and get the hard rock heart, can not extract soft rock core, operate strict bad grasp; Grabbing the spring formula only depends on the elastic force of spring leaf to grasp rock core, the little not only hard rock of elastic force is grabbed incessantly, and when corer arrives the shaft bottom down, the residue in shaft bottom often fractures grabbing spring, does not reach the purpose of coring, and can not use when large diameter drilling is cored at all, large diameter drilling is cored for above-mentioned reasons, particularly the work difficulty of coring to river stone layer, boulder bed, sulphur layer of sand is very big, almost can't carry out, and it is also very difficult not to be in the mood for probing work.At present, see report on not relevant as yet publication or the newspaper at home and abroad.

The purpose of this utility model designs at above-mentioned unfavorable factor, is not only applicable to the slim hole drilling on any stratum, and particularly to the coring of large diameter drilling ovum, layer of gravel, and can finish rotary drilling in the journey simultaneously and extract rock core once boring.

The utility model adopts double pipe structure to reach by gear, tooth bar, drive robot movement and comes the purpose that grasps rock core.Gear shaft is uniform to be installed on the inwall of outer tube, and gear set is on gear shaft, and initiatively tooth bar and passive tooth bar lay respectively at the gear both sides, all be contained in the dovetail groove on the outer tube wall, and can be along the outer tube axially-movable; Initiatively the power transmission pin on the tooth bar is arranged in the power transmission groove on the outer wall of inner tube; Passive tooth bar lower end is hinged with manipulator; The telescopic shaft on interior pipe top is connected with top connection, and the lock pin on the telescopic shaft screws in locking in the groove on the sliding catheter; Power transmission is packaged to become one on telescopic shaft and with it, and the power transmission cover is sleeved on the power transmission piece, and affixed with outer tube upper end cover plate; Outer tube lower end lip is a back taper; Between outer tube upper end cover plate and top connection, protective cover is housed.

The utility model has the advantages that:

1, can finish rotary drilling in the journey simultaneously and extract rock core once boring, novel structure, easy and simple to handle, accelerated the construction speed of pile foundation engineering, solve the difficult problem of coring of geological prospecting industry heavy caliber gravel layer, had obvious social and economic benefit.

2, not being subjected to the restriction applied range of pore size, all can using to 1000 millimeters greatly to 90 millimeters for a short time, is that other core drilling device is incomparable.

3, be not subjected to the restriction of rig type, positive and negative circulation all can be suitable for.

4, be not subjected to the restriction of gravel size, need not the restraining just to get and can enter interior pipe of scope in pipe is that the annulus area gram is got, and it is fast to drill drilling depth, reduction of erection time greatly, reduction construction costs, remarkable in economical benefits.

5, this structure correcting performance is good, be difficult for crooked, boring verticality height.

Description of drawings of the present utility model is as follows:

Fig. 1 drills through the structural representation of device for the ovum gravel

Fig. 2 is the structural representation of power transmission piece and power transmission cover

Fig. 3 is the scheme of installation of wheel and rack on outer tube wall

Fig. 4 is the mesh schematic representation of gear with tooth bar

Be described in further detail below in conjunction with accompanying drawing:

The utility model adopts double pipe structure, gear shaft 13 is uniform to be installed on the inwall of outer tube 5, and gear 12 is sleeved on the gear shaft 13, and initiatively tooth bar 10 and passive tooth bar 8 lay respectively at the both sides of gear 12, all be contained in the dovetail groove on outer tube 5 inwalls, and can be along the axially-movable of outer tube 5; Initiatively the power transmission pin 11 on the tooth bar 10 is arranged in the power transmission groove 7 on pipe 6 outer walls, the articulated manipulator 9 in the lower end of passive tooth bar 8, the telescopic shaft 4 on interior pipe 6 tops is connected with top connection 1, in the locking slot that lock pin 3 on the telescopic shaft 4 screws on the sliding catheter 2, power transmission piece 14 is contained on the telescopic shaft 4, and become one with it, power transmission cover 15 is sleeved on the power transmission piece 14, and it is affixed with outer tube 5 upper end cover plates, outer tube 5 lower end lips are back taper, between outer tube 5 upper end cover plates and top connection 1 protective cover 16 are housed.

Before the following brill, can make telescopic shaft 4 drive power transmission piece 14 relative outer tubes 5, be rotated counterclockwise 30～40 degree; play tight lock effect in the locking slot that lock pin 3 is screwed on the sliding catheter 2; pipe 6 does not do relative motion with outer tube 5 in making, and manipulator 9 is ensconced between the inner and outer pipes, is in protected state.When drilling tool arrives the shaft bottom down, start rig to turn clockwise, lock pin 3 screws out locking slots automatically, creeps into.

Outer tube 5 is motionless owing to conduct oneself with dignity when carrying brill, carry on the interior pipe 6, power transmission groove 7 in this moment on pipe 6 outer walls drives initiatively by the power transmission pin 11 that is mated and moves on the tooth bar 10, ordering about gear 12 rotates, promoting passive tooth bar 8 moves down, manipulator 9 stretches out funneling, reaches to grab the purpose of holding in both hands rock core in the pipe.Carry brill immediately behind the probing drilling depth, rock core is once extracted.

On the contrary, when interior pipe 6 moves down, initiatively tooth bar 10 also moves down, gear 12 rotates, passive tooth bar 8 is driven move on the manipulators 9 ensconce between pipe 6 and the outer tube 5.

Claims

1, the ovum gravel drills through device and is made up of outer tube, interior pipe and top connection, it is characterized in that: gear shaft is uniform to be installed on the inwall of outer tube, gear set is on gear shaft, initiatively tooth bar and passive tooth bar lay respectively at the gear both sides, all be contained on the outer tube wall in the dovetail groove with the outer tube axially parallel, initiatively the power transmission pin on the tooth bar is arranged in the power transmission groove on the outer wall of inner tube; Passive tooth bar lower end is hinged with manipulator; The telescopic shaft on interior pipe top is connected with top connection, in the locking slot on the lock pin screw-in sliding catheter on the telescopic shaft; Power transmission is packaged to become one on telescopic shaft and with it, and the power transmission cover is sleeved on the power transmission piece, and affixed with outer tube upper end cover plate; Outer tube lower end lip is a back taper; Between outer tube upper end cover plate and top connection, protective cover is housed.