CN211201779U

CN211201779U - Drill bit supporting device of well drilling wellhead

Info

Publication number: CN211201779U
Application number: CN201922090704.3U
Authority: CN
Inventors: 崔广甲; 秦阳; 陈高鹏; 田淑娟; 靳鑫; 胡彦斌; 张寿明; 曹桂宝; 王义勇; 范建荣; 刘利; 贾传震; 林鹏程
Original assignee: Shandong Fangda Engineering Co ltd
Current assignee: Shandong Fangda Engineering Co ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-08-07
Anticipated expiration: 2029-11-28

Abstract

A drill bit supporting device of a well drilling wellhead belongs to the technical field of well drilling. Including setting up rig chassis (1) in well head (2) outside, its characterized in that: two sides of the wellhead (2) are respectively fixed with a slide rail (3), the two slide rails (3) form a slide way for supporting the clamping plate (4) at intervals, and the supporting clamping plate (4) moves back and forth between the wellhead (2) and the outer side of the drilling tower chassis (1) along the slide way; still be provided with the draw-in groove mechanism on supporting cardboard (4), when supporting cardboard (4) and remove directly over well head (2), draw-in groove mechanism card is in the breach department of drill bit (8). In this drill bit strutting arrangement of well drilling well head, through the draw-in groove mechanism that supports the cardboard, when the size of drill bit is greater than carousel through-hole size, can be with the drill bit card in well head department before changing the drill bit, avoid in the drill bit loses the support and falls into the drilling when the carousel is demolishd to the drill bit of being convenient for is changed.

Description

Drill bit supporting device of well drilling wellhead

Technical Field

A drill bit supporting device of a well drilling wellhead belongs to the technical field of well drilling.

Background

With the continuous development of the coal industry, many mines need to be constructed with large-diameter drill holes for ventilation, gas extraction, drainage, cable lowering and the like, and with the continuous development of the technology, manual shaft sinking is generally replaced by a drilling machine drilling mode, wherein a rotary disc drilling machine is the most common drilling machine. The rotary disc type drilling machine is internally provided with a rotary disc, a through hole for fixing a drill bit is formed in the center of the rotary disc, and the rotary disc drives the drill bit to rotate so as to realize drilling.

However, in the prior art, when the hole diameter of the drill hole is large, the drill bit with large size is generally continuously replaced, and the drill hole is enlarged for many times, and when the size of the drill bit is smaller than that of the through hole of the rotary table, the drill bit can be lifted through the through hole of the rotary table when the drill bit needs to be replaced. However, when the size of the drill hole is large, the size of the part of the lower part of the drill bit actually drilling the hole is far larger than the size of the part of the upper part of the drill bit connected with the rotary table, namely the size of the lower part of the drill bit is larger than the size of the through hole of the rotary table, so that the drill bit cannot be pulled out through the drill bit from the lower part to the upper part. If the turntable is first removed from the drill bit and the turntable is then transferred, the drill bit will lose support and fall into the borehole. Therefore, a supporting device is designed to temporarily support the drill bit when the rotary table is transferred before the drill bit is replaced, so as to prevent the drill bit from falling, and facilitate the next drill bit replacement operation, which is a problem to be solved in the field.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: overcome prior art's not enough, provide one kind when the size of drill bit is greater than carousel through-hole size, can be with the drill bit card in well head department before changing the drill bit, avoid in the drill bit loses the support and falls into the drilling when the carousel is demolishd to the drill bit strutting arrangement of well drilling well head of the drill bit of being convenient for is changed.

The utility model provides a technical scheme that its technical problem adopted is: this drill bit strutting arrangement of well drilling well head, including setting up the rig chassis in the well head outside, its characterized in that: two sides of the wellhead are respectively fixed with a slide rail, the two slide rails form a slide way for supporting the clamping plate at intervals, and the supporting clamping plate moves back and forth between the wellhead and the outer side of the chassis of the drilling tower along the slide way; still be provided with the draw-in groove mechanism on supporting the cardboard, when supporting the cardboard and remove directly over the well head, draw-in groove mechanism card is in the breach department of drill bit.

Preferably, a supporting device base is fixed on the outer side of the drilling tower chassis, two ends of the two sliding rails are respectively fixed on the drilling tower chassis and the supporting device base, and the supporting clamping plate moves back and forth between the wellhead and the supporting device base.

Preferably, the upper surface of the support means base is flush with the upper surface of the rig floor.

Preferably, the support clamping plate comprises a rectangular plate body, and the clamping groove mechanism is inwards arranged at the center of the plate body from the side edge of the plate body close to one side of the wellhead.

Preferably, the clamping groove mechanism comprises a clamping groove hole and a clamping groove which are formed in the center of the plate body, and the clamping groove is formed in the center of the plate body from the middle of the side edge, close to one side of the wellhead, of the plate body and is communicated with the clamping groove hole.

Preferably, one end of the upper surface of the plate body, which is far away from the wellhead, is also provided with a fixing bulge for connecting with a pull rope.

Compared with the prior art, the utility model discloses the beneficial effect who has is:

1. in this drill bit strutting arrangement of well drilling well head, through the draw-in groove mechanism that supports the cardboard, when the size of drill bit is greater than carousel through-hole size, can be with the drill bit card in well head department before changing the drill bit, avoid in the drill bit loses the support and falls into the drilling when the carousel is demolishd to the drill bit of being convenient for is changed.

2. The rear side of the upper surface of the plate body is also fixed with a fixing bulge, and the pull rope is convenient to articulate through the fixing bulge so as to realize the movement of the supporting clamping plate.

3. The slide way for supporting the clamping plate is formed by the two slide rails at intervals, so that the clamping plate can be conveniently supported to move back and forth between the wellhead and the base of the supporting device.

Drawings

FIG. 1 is a schematic diagram of a drill bit support apparatus for a well head.

FIG. 2 is a schematic diagram of a bit support assembly support pallet for a drilling wellhead.

FIG. 3 is a schematic representation of the use of the bit support apparatus for a drilling wellhead.

Wherein: 1. the drilling tower comprises a drilling tower chassis 2, a wellhead 3, a slide rail 4, a supporting clamping plate 5, a clamping groove 6, a clamping groove hole 7, a fixing protrusion 8, a drill bit 9 and a supporting device base.

Detailed Description

Fig. 1 to 3 are preferred embodiments of the present invention, and the present invention will be further explained with reference to fig. 1 to 3.

As shown in fig. 1 and 3, a drill bit support device (hereinafter referred to as a drill bit support device) for a well mouth of a well comprises a drilling tower chassis 1 arranged outside a well mouth 2, wherein the drilling tower chassis 1 is a part of a rotary drilling rig, a rotary table in the rotary drilling rig is fixed above the well mouth 2 through the drilling tower chassis 1, and holes are formed through a drill bit 8 fixed on the rotary drilling rig. In the present drill bit support device, the direction in which the wellhead 2 is located in the rig floor 1 is defined as the front side.

The rear side of the drilling tower chassis 1 is provided with a supporting device base 9, the supporting device base 9 is fixed with the drilling tower chassis 1 in a welding mode, and the upper surface of the supporting device base 9 is flush with the upper surface of the drilling tower chassis 1. Two sides of the wellhead 2 are respectively provided with a slide rail 3, and the front end and the rear end of the slide rail 3 are respectively fixed on the drilling tower chassis 1 and the supporting device base 9. Still placed support cardboard 4 on strutting arrangement base 9, support cardboard 4 is located between two slide rails 3, and two slide rails 3 intervals form the slide that supports cardboard 4, and support cardboard 4 is along this slide between well head 2 and strutting arrangement base 9 reciprocating motion.

Referring to fig. 2, the supporting clip 4 includes a rectangular plate made of metal, a circular slot 6 is formed in the center of the plate, a slot 5 is formed in the front side of the plate, and the slot 5 is formed in the front side of the plate and extends backward to the slot 6 and communicates with the slot 6.

The rear side of the upper surface of the plate body is also fixed with a fixed protrusion 7, and the stay cord is convenient to hang through the fixed protrusion 7, so that the support clamping plate 4 can be moved conveniently.

The specific working process and working principle are as follows:

when the drill bit 8 needs to be replaced, if the size of the drill bit 8 is larger than that of the through hole in the rotary table, the rotary table and the drill bit 8 are hoisted through the crane, a gap appears between the rotary table and the wellhead 2 after hoisting, and at the moment, the supporting clamping plate 4 is pushed to the upper side of the wellhead 2 along the slide way.

In prior art, be provided with the breach on drill bit 8, consequently when supporting cardboard 4 and pushing away to drill bit 8 department, the both ends of draw-in groove 5 can block in drill bit 8's breach department to along with the entering of supporting cardboard 4, drill bit 8 gets into the center department that supports cardboard 4 gradually and finally removes to draw-in groove hole 6 department, supports cardboard 4 and is located well head 2 directly over this moment. The drill bit 8 and the rotary table can be separated at this time, and the drill bit 8 cannot fall into the drill hole (see fig. 3) because the drill bit 8 is clamped by the clamping slot hole 6, so that the rotary table can be lifted away firstly, and the replacement of the drill bit 8 can be completed because the rotary table is lifted away.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a drill bit strutting arrangement of well drilling well head, is including setting up rig chassis (1) in the well head (2) outside, its characterized in that: two sides of the wellhead (2) are respectively fixed with a slide rail (3), the two slide rails (3) form a slide way for supporting the clamping plate (4) at intervals, and the supporting clamping plate (4) moves back and forth between the wellhead (2) and the outer side of the drilling tower chassis (1) along the slide way; still be provided with the draw-in groove mechanism on supporting cardboard (4), when supporting cardboard (4) and remove directly over well head (2), draw-in groove mechanism card is in the breach department of drill bit (8).

2. The drill bit support apparatus of a drilling wellhead as claimed in claim 1 wherein: a supporting device base (9) is fixed on the outer side of the drilling tower chassis (1), two ends of the two sliding rails (3) are respectively fixed on the drilling tower chassis (1) and the supporting device base (9), and the supporting clamping plate (4) moves between the wellhead (2) and the supporting device base (9) in a reciprocating mode.

3. The drill bit support apparatus of a drilling wellhead as claimed in claim 2 wherein: the upper surface of the supporting device base (9) is flush with the upper surface of the drilling tower chassis (1).

4. The drill bit support apparatus of a drilling wellhead as claimed in claim 1 wherein: the supporting clamping plate (4) comprises a rectangular plate body, and the clamping groove mechanism is inwards arranged at the center of the plate body from the side edge of one side, close to the wellhead (2), of the plate body.

5. The drill bit support apparatus of a drilling wellhead as claimed in claim 4 wherein: the clamping groove mechanism comprises a clamping groove hole (6) and a clamping groove (5) which are formed in the center of the plate body, and the clamping groove (5) is formed in the center of the plate body from the middle of the side edge, close to one side of the well head (2), of the plate body and is communicated with the clamping groove hole (6).

6. A bit support arrangement for a drilling wellhead as claimed in claim 4 or claim 5 wherein: and a fixing bulge (7) used for being connected with the pull rope is further arranged at one end of the upper surface of the plate body, which is far away from the wellhead (2).