CN217538610U

CN217538610U - Drilling slag fishing device in construction of large-diameter horizontal directional drill

Info

Publication number: CN217538610U
Application number: CN202221121891.2U
Authority: CN
Inventors: 李晓晖; 郭俊; 黄军杰; 周芋帆; 程志优; 吴灵敏
Original assignee: China Gezhouba Group Power Co ltd
Current assignee: China Gezhouba Group Power Co ltd
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2022-10-04
Anticipated expiration: 2032-05-11

Abstract

A drilling slag salvaging device in large-caliber horizontal directional drilling construction comprises a drill rod, a slag storage barrel and a drill bit, wherein a first threaded joint is arranged at the end part of the drill rod, a second threaded hole is formed in the bottom of the slag storage barrel, and the drill rod and the slag storage barrel are in threaded connection through the first threaded joint and the second threaded hole; the top of the slag storage barrel is provided with a second threaded joint, the bottom of the drill bit is provided with a third threaded hole, and the slag storage barrel and the drill bit are in threaded connection through the second threaded joint and the third threaded hole; the utility model discloses an at the installation scarfing cinder device of drill bit afterbody, can effectively clear away the rubble residue in the drilling, especially directional brill construction under geological conditions such as all kinds of terranes, sand gravel and bore the effect of clearing away of sediment and is showing especially.

Description

Drilling slag fishing device in large-diameter horizontal directional drilling construction

Technical Field

The utility model belongs to hole construction equipment field, in particular to sediment fishing device that bores in construction of heavy-calibre horizontal directional drill.

Background

Can produce a large amount of soil bits and detritus in the directional boring of level reaming construction, along with the continuous expansion of reaming level, the volume of these drill cuttings also can slowly grow, deposits in the hole, if the drill cuttings in the hole can not in time effectively be clear away, probably causes drill bit card brill or disconnected pole, directly leads to the pipeline to go back to drag the failure even. In the prior art, the horizontal directional drill mainly removes drill cuttings by improving the flow rate of slurry, improving the adhesion performance of the slurry, increasing the times of filtering holes or adopting a reverse circulation slag removal process and other methods in the construction process.

In the construction of a large-caliber horizontal directional drill, the cost is usually high when the flow rate of the slurry is increased, the hole wall collapses due to the overhigh initial shooting speed of the slurry, and the application effect of improving the adhesion of the slurry on drilling cuttings with large particle sizes is not ideal; in addition, increase the filtration pore number of times and can not clear away the drill chip effectively, because the drill bit is limited to the distance of the effective transport of drill chip, the multiple filtration pore has reduced the efficiency of construction, in case touch bulkier stone bits and when adopting the slag removal technology of reverse circulation, the stone bits are caused stifled pipe phenomenon very easily after being inhaled the drilling rod, and then seriously influence the whole construction progress of engineering and make construction cost increase by a wide margin.

Disclosure of Invention

In view of the technical problem that the background art exists, the utility model provides a brill sediment fishing device in the construction of heavy-calibre horizontal directional drill, the device is through installing the scarfing cinder device at the drill bit afterbody, can effectively clear away the rubble residue in the drilling, and especially the effect of clearing away of directional drilling construction brill sediment is showing under geological conditions such as all kinds of terranes, sand gravel especially.

In order to solve the technical problem, the utility model discloses following technical scheme has been taken and has been realized:

a drilling slag salvaging device in large-caliber horizontal directional drilling construction comprises a drill rod, a slag storage barrel and a drill bit, wherein a first threaded joint is arranged at the end part of the drill rod, a second threaded hole is formed in the bottom of the slag storage barrel, and the drill rod and the slag storage barrel are in threaded connection through the first threaded joint and the second threaded hole; the top of storage bucket is equipped with second screwed joint, and the bottom of drill bit is equipped with the third screw hole, through second screwed joint and third screw hole threaded connection between storage bucket and the drill bit.

In the preferred scheme, the slag storage barrel comprises a barrel wall, wherein filter slag holes are symmetrically formed in the barrel wall, a central shaft is arranged at the axis of the barrel wall, a supporting plate is connected between the barrel wall and the central shaft, and a second threaded hole and a second threaded connector are formed in the front end and the rear end of the central shaft.

In the preferred scheme, the upper end opening part on the cylinder wall is provided with bolt holes which are annularly and symmetrically distributed.

In a preferred scheme, the drill comprises a rotating shaft, a supporting rod and a supporting ring; the front end and the rear end of the rotating shaft are provided with a third threaded joint and a third threaded hole, the rotating shaft is vertically arranged at the axis center of the support ring, a support rod is connected between the rotating shaft and the support ring, and grinding lugs are arranged on the support rod and the support ring.

In the preferred scheme, drilling rod, center pin and rotation axis are interior hollow structure, and when drilling rod, center pin and rotation axis three threaded connection, the inside of drilling rod, center pin and rotation axis switches on each other.

This patent can reach following beneficial effect:

1. the slag removing drill bit and the slag storage barrel are arranged at the bottom of the drill rod, so that broken stone residues in the hole can be effectively removed and taken out of the hole, and the slag removing efficiency is high while the stability of the structure of the hole body is ensured;

2. all parts of the device are of detachable structures, parts are convenient to maintain and assemble, and drill bits of different types can be matched according to the size of a hole body and different geological conditions, so that hole forming efficiency of directional drilling is improved.

Drawings

The invention will be further explained with reference to the following figures and examples:

fig. 1 is a schematic view of a first overall structure of the present invention;

FIG. 2 is a schematic view of a second overall structure of the present invention;

FIG. 3 is a plan sectional view of the overall structure of the present invention;

fig. 4 is a plan side view of the overall structure of the present invention.

In the figure: the drill rod comprises a drill rod 1, a first threaded joint 101, a slag storage barrel 2, a barrel wall 201, a slag filtering hole 202, a second threaded hole 203, a second threaded joint 204, a bolt hole 205, a supporting plate 206, a central shaft 207, a drill bit 3, a rotating shaft 301, a third threaded joint 302, a third threaded hole 303, a supporting rod 304, a supporting ring 305 and a grinding lug 306.

Detailed Description

As shown in fig. 1 and 2, the drilling slag salvaging device in the large-caliber horizontal directional drilling construction comprises a drill rod 1, a slag storage barrel 2 and a drill bit 3, wherein a first threaded joint 101 is arranged at the end part of the drill rod 1, a second threaded hole 203 is formed in the bottom of the slag storage barrel 2, and the drill rod 1 is in threaded connection with the slag storage barrel 2 through the first threaded joint 101 and the second threaded hole 203; the top of the slag storage barrel 2 is provided with a second threaded joint 204, the bottom of the drill bit 3 is provided with a third threaded hole 303, and the slag storage barrel 2 and the drill bit 3 are in threaded connection through the second threaded joint 204 and the third threaded hole 303;

through this structure, be detachable connection between drilling rod 1, storage sediment bucket 2 and the drill bit 3, when wherein arbitrary part takes place wearing and tearing in the use, can dismantle it and carry out corresponding maintenance and maintenance, also can be according to the size and the different geology condition in hole, the drill bit 3 and the storage sediment bucket 2 use of collocation different grade type improve directional drilling pore-forming efficiency.

As shown in fig. 1 to 4, the slag storage barrel 2 preferably includes a barrel wall 201, the barrel wall 201 is symmetrically provided with slag filtering holes 202 for filtering slurry, a central shaft 207 is disposed at an axial center of the barrel wall 201, a support plate 206 is connected between the barrel wall 201 and the central shaft 207, the support plate 206 can effectively improve strength of the barrel wall 201, a second threaded hole 203 and a second threaded joint 204 are disposed at front and rear ends of the central shaft 207, and the central shaft 207 can be connected with the drill rod 1 and the drill bit 3 through the second threaded hole 203 and the second threaded joint 204.

In a preferred embodiment, as shown in fig. 1 and 4, bolt holes 205 are formed in an opening at an upper end of the cylindrical wall 201, and the bolt holes 205 are annularly and symmetrically distributed. Through the optional filter screen and reducing ring of installing in section of thick bamboo wall open end of bolt hole 205, wherein reducing ring mainly used storing up the bore transform operation of sediment bucket 2, the filterability that promotes storing up sediment bucket 2 that the filter screen then can be further.

As shown in fig. 1 to 4, the drill 3 includes a rotating shaft 301, a support rod 304 and a support ring 305; the front end and the rear end of the rotating shaft 301 are provided with a third threaded connector 302 and a third threaded hole 303, the drill bit 3 can be in threaded connection with a centralizer at the tail of the reaming device through the third threaded connector 302, the drill bit 3 can be in threaded connection with the slag storage barrel 2 through the third threaded hole 303, the rotating shaft 301 is vertically arranged at the axis of the support ring 305, a support rod 304 is connected between the rotating shaft 301 and the support ring 305, the stability of the reaming device can be further improved, grinding lugs 306 are arranged on the support rod 304 and the support ring 305, the grinding lugs 306 are made of firm metal, can synchronously rotate along with the drill bit 3, perform secondary stirring on slurry in the hole, and cut and grind drilling slag with larger particle size in the hole.

Preferably, as shown in fig. 3, the drill rod 1, the central shaft 207 and the rotating shaft 301 are all hollow structures, and when the drill rod 1, the central shaft 207 and the rotating shaft 301 are connected by threads, the interiors of the drill rod 1, the central shaft 207 and the rotating shaft 301 are communicated with each other, so that the structure can play a role in conveying mud.

The working principle of the whole device is as follows:

1. when cleaning the hole, the drill rod 1, the slag storage barrel 2 and the drill bit 3 are arranged at the tail part of the hole expanding device and rotate together with the hole expanding device to drill into the hole;

2. when the drilling machine works, the drill bit 3 can stir the drilling slag with larger grain diameter deposited at the bottom of the hole, so that the slag carrying performance of slurry in the hole is improved; when the drill slag with larger grain diameter is encountered, the drill slag is further cut and ground by the grinding lug 306 on the drill bit 3 under the action of the self weight of the drill bit 3 and the rotary pulling force of the drilling machine;

3. after secondary stirring, cutting and grinding, the drilling slag enters the rear slag storage barrel 2 together with the slurry, the slurry flows out of a slag filtering hole 202 on the surface of the slag storage barrel 2, and the drilling slag larger than the slag filtering hole 202 is filtered in the slag storage barrel 2;

4. the slag storage barrel 2 moves outwards slowly under the action of the rotary tension of the drill rod 1, and the drilling slag in the hole is accumulated slowly in the slag storage barrel 2 until the whole drilling slag fishing device is completely pulled away from the hole, so that one-time hole cleaning work is completed.

The above-mentioned embodiments are merely preferred embodiments of the present invention, and should not be considered as limitations of the present invention, and the protection scope of the present invention should be defined by the technical solutions described in the claims, and includes equivalent alternatives of technical features in the technical solutions described in the claims. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.

Claims

1. The utility model provides a bore sediment fishing device in construction of heavy-calibre horizontal directional drill, including drilling rod (1), storage sediment bucket (2) and drill bit (3), its characterized in that: a first threaded connector (101) is arranged at the end part of the drill rod (1), a second threaded hole (203) is formed in the bottom of the slag storage barrel (2), and the drill rod (1) and the slag storage barrel (2) are in threaded connection through the first threaded connector (101) and the second threaded hole (203); the top of storage bucket (2) is equipped with second screwed joint (204), and the bottom of drill bit (3) is equipped with third screw hole (303), through second screwed joint (204) and third screw hole (303) threaded connection between storage bucket (2) and drill bit (3).

2. The device for salvaging drilling slag in the construction of the large-caliber horizontal directional drilling according to claim 1, is characterized in that: the slag storage barrel (2) comprises a barrel wall (201), wherein filter slag holes (202) are symmetrically formed in the barrel wall (201), a central shaft (207) is arranged at the axis of the barrel wall (201), a supporting plate (206) is connected between the barrel wall (201) and the central shaft (207), and a second threaded hole (203) and a second threaded joint (204) are formed in the front end and the rear end of the central shaft (207).

3. The device for salvaging drilling slag in the construction of the large-caliber horizontal directional drilling according to claim 2, is characterized in that: the upper end opening of the cylinder wall (201) is provided with bolt holes (205), and the bolt holes (205) are distributed in an annular symmetrical mode.

4. The device for salvaging drilling slag in the construction of the large-caliber horizontal directional drilling according to claim 1, is characterized in that: the drill (3) comprises a rotating shaft (301), a supporting rod (304) and a supporting ring (305); the front end and the rear end of the rotating shaft (301) are provided with a third threaded joint (302) and a third threaded hole (303), the rotating shaft (301) is vertically arranged at the axis of the support ring (305), a support rod (304) is connected between the rotating shaft (301) and the support ring (305), and grinding lugs (306) are arranged on the support rod (304) and the support ring (305).

5. The device for salvaging drilling slag in the construction of the large-caliber horizontal directional drilling according to the claim 2 or 4, wherein: the drill rod (1), the central shaft (207) and the rotating shaft (301) are all of an inner hollow structure, and when the drill rod (1), the central shaft (207) and the rotating shaft (301) are in threaded connection, the drill rod (1), the central shaft (207) and the rotating shaft (301) are communicated with one another.