CN210660033U

CN210660033U - Drill rod washover tool

Info

Publication number: CN210660033U
Application number: CN201921125268.2U
Authority: CN
Inventors: 方玲玲; 毛乾云
Original assignee: Ningbo Huilong Municipal Garden Construction Co Ltd
Current assignee: Ningbo Huilong Municipal Garden Construction Co Ltd
Priority date: 2019-07-17
Filing date: 2019-07-17
Publication date: 2020-06-02
Anticipated expiration: 2029-07-17

Abstract

The utility model relates to a drilling rod washover instrument relates to the technical field of non-excavation pipeline, has solved when the drill bit card on the rock or the rock in hole of collapsing is too big and can't float for the problem that drill bit and drilling rod still can't be extracted, and it includes: the device comprises an outer sleeve, a rod body, a joint, a support cylinder and two connecting plates, wherein the support cylinder is arranged on the outer side of the outer sleeve and is used for the rod body to penetrate through, the two connecting plates are welded on two sides of the support cylinder, one end of each connecting plate is welded with the support cylinder, and the other end of each connecting plate is welded with the outer sleeve; the rod body is arranged on the support cylinder in a penetrating way and is rotationally connected with the support cylinder, two limit cylinders fixed with the rod body are also sleeved on the rod body, and the two limit cylinders are respectively abutted against two ends of the support cylinder; the end of the rod body far away from the joint is provided with a drilling head, the peripheral wall of the drilling head is provided with a plurality of spray holes, and the peripheral wall of the drilling head is welded with a plurality of cutting knives. The utility model discloses have and carry out the cutting through the drilling head near soil, the rock of drilling rod and smash to reduce the moment of torsion of being buried drilling rod, drill bit, conveniently extract the effect of drilling rod and drill bit.

Description

Drill rod washover tool

Technical Field

The utility model belongs to the technical field of the technique of non-excavation pipeline and specifically relates to a drilling rod washover instrument is related to.

Background

The modern trenchless pipe laying technology is a new construction technology for laying, replacing or repairing various underground pipelines by means of rock-soil guiding, directional drilling and the like under the condition that grooves are not dug on the ground surface; particularly, the pipeline can be laid in some areas where excavation operation cannot be carried out, such as crossing roads, railways, buildings, rivers, historic site protection areas, downtown areas, crop and vegetation protection areas and the like, and is widely used in engineering departments such as gas, telecommunication, electric power and the like, so that the social and economic benefits are remarkable.

Modern trenchless underground pipeline construction methods have emerged from the 20 th century 70 s in the beginning of the years, including: horizontal guide drilling, horizontal directional drilling, a direction-controllable horizontal spiral drill, a percussion lance, a pipe ramming hammer, a miniature chasing tool, old pipe replacement and repair, a pipe-jacking tunneling machine and the like.

During drilling construction, the drill bit and the drill rod are easy to cause overlarge torque of the drill rod, locking of the drill rod or blocking of the drill bit due to shrinkage, collapse or too thick slurry in a drill hole, so that construction cannot be continued, and the drill bit and the drill rod are damaged by forced rotation or pulling out.

Chinese patent No. CN204357397U discloses a drill rod casing washer, comprising: the rod body, the joint and the outer sleeve; the rod body is a cylindrical hollow tube; the joint is lapped with the outer wall of the rear end of the rod body; the nozzle is a blind plate with a drilled hole in the center and is obliquely sealed at the front end of the rod body; and the outer sleeve is a cylindrical hollow pipe and is welded with the rod body, and two sides of the welding part of the outer sleeve and the rod body are respectively welded with a seamless steel pipe which is used for being connected with the inside of the rod body to serve as a slurry outlet. And by spraying the slurry, the rock debris deposit around the buried drill rod is flushed and suspended again, and the torque of the buried drill rod is reduced to complete hole expansion.

The above prior art solutions have the following drawbacks: when the drill bit is stuck on the rock or the collapsed rock is too large to float, the drill bit and the drill rod still cannot be pulled out, and the improvement space is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a drilling rod washover instrument cuts near soil, the rock through the drilling head and smashes to reduce the moment of torsion of being buried drilling rod, drill bit, conveniently extract drilling rod and drill bit.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a drill rod washover tool comprises an outer sleeve, a rod body, a joint, a support cylinder and two connecting plates, wherein the support cylinder is arranged on the outer side of the outer sleeve and is used for the rod body to penetrate through, the two connecting plates are welded on two sides of the support cylinder, one end of each connecting plate is welded with the support cylinder, and the other end of each connecting plate is welded with the outer sleeve;

the rod body penetrates through the support barrel and is rotatably connected with the support barrel, two limiting barrels fixed with the rod body are further sleeved on the rod body, and the two limiting barrels are respectively abutted against two ends of the support barrel;

the drilling tool is characterized in that a drilling head is arranged at one end, away from the joint, of the rod body, a plurality of spray holes are formed in the peripheral wall of the drilling head, and a plurality of cutting tools are welded to the peripheral wall of the drilling head.

Through adopting above-mentioned technical scheme, the drilling head cuts near soil, the rock of drilling rod and smashes to reduce the volume of rock, conveniently wash, suspend the detritus on every side of the drilling rod once more, in order to conveniently extract drilling rod and drill bit, also can carry out the reaming to around drilling rod and drill bit simultaneously, in order to reduce the resistance when drilling rod and drill bit are extracted.

The utility model discloses further set up to: the cutting knife and the axis of the rod body are arranged in an acute angle.

Through adopting above-mentioned technical scheme, the cutting sword is the acute angle setting with the axis of the body of rod, has reduced the resistance that the cutting sword received when the drilling head is rotatory, has improved the efficiency that the cutting sword cut soil, has improved reaming efficiency.

The utility model discloses further set up to: the annular has been seted up on the internal perisporium of a support section of thick bamboo, set up a plurality of through-holes that communicate mutually with the annular on the periphery wall of the body of rod, the shrouding has all been welded to the both sides of connecting plate, two the shrouding with the connecting plate, the periphery wall of a support section of thick bamboo, the periphery wall of outer sleeve are formed with the closed groove, set up the intercommunicating pore that a plurality of one end annular communicate mutually the other end and the closed groove communicate mutually on the periphery wall of a support section of thick bamboo, still set up at least one and the first through.

Through adopting above-mentioned technical scheme, make the hydroenergy in the body of rod discharge through first perforation to the periphery wall to the drilling rod wets, gets rid of the mud on the drilling rod periphery wall through the outer tube in order to make things convenient for, weakens the power of holding tightly of mud to the drilling rod.

The utility model discloses further set up to: the outer sleeve is further provided with a plurality of second through holes, and the outer sleeve is further provided with a communication groove for communicating the second through holes with the first through holes.

Through adopting above-mentioned technical scheme, make the hydroenergy in the pole body can discharge through the second through hole to soil, the detritus near the drilling rod wet, conveniently ream through the body of rod and drilling head, improved reaming efficiency.

The utility model discloses further set up to: the inner peripheral wall of the joint far away from the rod body is provided with an internal thread connected with the drill rod.

Through adopting above-mentioned technical scheme, make joint and drilling rod threaded connection, the drilling rod is connected with the rig to conveniently drive the pole body and rotate with the drill bit, carry out the reaming, will hold tightly or card dead drilling rod and drill bit take out, simple structure, easy dismounting.

The utility model discloses further set up to: one side that spacing section of thick bamboo is close to a support section of thick bamboo is provided with a plurality of balls, and supplies the ball inlays establishes rolling first rolling groove, the both ends of a support section of thick bamboo are all seted up and are supplied the ball to inlay establishes rolling second rolling groove, it inlays the holder of establishing to still overlap two confession balls on the body of rod, the holder sets up between spacing section of thick bamboo and a support section of thick bamboo.

Through adopting above-mentioned technical scheme, convert the sliding friction between spacing section of thick bamboo and the support section of thick bamboo into rolling friction, resistance when having reduced the body of rod and rotating has improved the efficiency when reaming through the drilling rod.

The utility model discloses further set up to: chamfers are arranged at two ends of the outer sleeve.

By adopting the technical scheme, the burrs on the edge of the outer sleeve are removed by the arrangement of the chamfer, the resistance of the outer sleeve on the drill rod during sliding is reduced, and the abrasion of the outer sleeve on the drill rod during use is reduced.

The utility model discloses further set up to: the limiting cylinder is welded and fixed with the rod body.

Through adopting above-mentioned technical scheme, spacing section of thick bamboo is through welded fastening on the body of rod, firm in connection, and easy operation makes the body of rod rotate to be connected on supporting a section of thick bamboo, and difficult and supporting a section of thick bamboo and take place relative axial displacement.

The utility model discloses further set up to: and the peripheral wall of the limiting cylinder is in threaded connection with a set screw for connecting the limiting cylinder and the rod body.

Through adopting above-mentioned technical scheme, make spacing section of thick bamboo can dismantle through holding screw and connect on the body of rod, conveniently carry out dismouting maintenance and change to spacing section of thick bamboo and the body of rod, improved the dismouting efficiency of spacing section of thick bamboo and the body of rod.

To sum up, the utility model discloses a beneficial technological effect does:

soil and rock near the drill rod are cut and crushed by the drilling head, so that the torque of the buried drill rod and the drill bit is reduced, and the drill rod and the drill bit are conveniently pulled out.

Drawings

Fig. 1 is a schematic structural diagram of a drill pipe washover tool of the present invention.

FIG. 2 is a partial cross-sectional view of a pipe casing tool.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Fig. 4 is an enlarged view of a portion B in fig. 2.

Fig. 5 is a schematic diagram showing a rod body, a ball and a limiting cylinder in a partially exploded manner.

Fig. 6 is a schematic diagram of a rod body, a ball and a limiting cylinder in a local explosion mode.

Fig. 7 is a partial cross-sectional view of the spacing cylinder secured to the rod body by a set screw.

FIG. 8 is a schematic view of the welding of the outer sleeve.

In the figures, 10, the outer sleeve; 11. a first through hole; 12. a second through hole; 13. a communicating groove; 14. chamfering; 20. a rod body; 21. a through hole; 30. a joint; 31. an internal thread; 40. a support cylinder; 41. a ring groove; 42. a communicating hole; 43. a second rolling groove; 50. a connecting plate; 51. closing the plate; 60. a limiting cylinder; 61. a first rolling groove; 70. a drilling head; 71. spraying a hole; 72. a cutting blade; 80. closing the groove; 90. a ball bearing; 100. a holder; 110. and (5) tightening the screw.

Detailed Description

The present invention will be described in further detail with reference to the accompanying fig. 1 to 8.

Referring to fig. 1, a drill pipe washover tool disclosed by the present invention includes an outer sleeve 10, a rod body 20, a joint 30, a support cylinder 40, and a connecting plate 50.

Referring to fig. 1 and 2, the supporting cylinder 40 is disposed outside the outer sleeve 10, the supporting cylinder 40 is not in contact with the outer sleeve 10, the number of the connecting plates 50 is two, the two connecting plates 50 are symmetrically welded to two sides of the supporting cylinder 40, one end of each connecting plate 50 is welded to the supporting cylinder 40, and the other end of each connecting plate 50 is welded to the outer sleeve 10, so as to connect the supporting cylinder 40 and the outer sleeve 10 into a whole.

The rod body 20 penetrates through the support cylinder 40 and is rotatably connected with the support cylinder 40, two limiting cylinders 60 are sleeved on the rod body 20, the limiting cylinders 60 are fixed with the rod body 20, and the limiting cylinders 60 are arranged at two ends of the support cylinder 40 and are abutted against two ends of the limiting cylinders 60 so as to support the rod body 20; the upper end of the rod body 20 is integrally provided with a connector 30, and the connector 30 is provided with an internal thread 31 so as to facilitate the threaded connection of the connector 30 and a drill rod and drive the rod body 20 to rotate through a drilling machine; the lower end of the rod body 20 is provided with a drilling head 70, the drilling head 70 can be welded on the lower end of the rod body 20 or screwed on the lower end of the rod body 20, and the drilling head 70 is preferably welded on the lower end of the rod body 20; the outer peripheral wall of the drilling head 70 is provided with a plurality of spray holes 71, the spray holes 71 are uniformly distributed along the circumferential direction of the drilling head 70 so as to facilitate the water to be sprayed out through the spray holes 71, moisten the soil around the drilling head 70 and simultaneously flush and suspend the rock debris sediments around the buried drill rod again; the peripheral wall of the drill head 70 is welded with a plurality of cutting knives 72, the cutting knives 72 are uniformly distributed along the circumferential direction of the drill head 70, and the cutting knives 72 and the axis of the rod body 20 are arranged in an acute angle to reduce the resistance of the drill head 70 during rotating cutting.

The outer sleeve 10 is provided with chamfers 14 at both ends to remove burrs at both ends of the outer sleeve 10, reduce wear on the drill rod when the outer sleeve 10 slides, and reduce resistance to sliding of the outer sleeve 10 along the drill rod.

Referring to fig. 3, sealing plates 51 are welded to both upper and lower sides of the connecting plate 50, and a sealing groove 80 is formed in the sealing plates 51, the connecting plate 50, the outer circumferential wall of the support cylinder 40, and the outer circumferential wall of the outer sleeve 10.

Referring to fig. 2 and 3, the inner circumferential wall of the support cylinder 40 is provided with a ring groove 41, the ring groove 41 and the support cylinder 40 are concentrically arranged, the outer circumferential wall of the rod body 20 is provided with a plurality of through holes 21, the through holes 21 are uniformly distributed along the circumferential direction of the support cylinder 40 and penetrate through the circumferential wall of the rod body 20, the through holes 21 correspond to the ring groove 41 and are mutually communicated with the ring groove 41, the outer circumferential wall of the support cylinder 40 is further provided with a plurality of communication holes 42, one ends of the communication holes 42 are mutually communicated with the ring groove 41, the other ends of the communication holes 42 are mutually communicated with the closed groove 80, the outer circumferential wall of the outer sleeve 10 is further provided with at least one first through hole 11, the first through hole 11 penetrates through the circumferential wall of the outer sleeve 10, the first through hole 11 is mutually communicated with the closed groove 80, so that water in the rod body 20 can sequentially pass through the through, so as to conveniently remove the mud on the peripheral wall of the drill rod.

Referring to fig. 4, the outer circumferential wall of the outer sleeve 10 is further provided with a plurality of second through holes 12, the second through holes 12 penetrate through the circumferential wall of the outer sleeve 10, the outer sleeve 10 is further provided with a communicating groove 13, and the communicating groove 13 is communicated with the first through hole 11 and the second through holes 12, so that water in the rod body 20 can sequentially pass through the through hole 21, the annular groove 41, the closed groove 80, the first through hole 11, the communicating groove 13 and the second through holes 12 and is discharged through the second through holes 12 to moisten soil around the drill rod, and meanwhile, a large amount of water is injected to flush and suspend debris around the buried drill rod again.

Referring to fig. 5 and 6, a plurality of balls 90 are arranged on one side of the limiting cylinder 60 close to the supporting cylinder 40, the balls 90 are uniformly distributed along the circumferential direction of the limiting cylinder 60, a second rolling groove 43 is formed in the end surface of the supporting cylinder 40 close to the limiting cylinder 60, the balls 90 are embedded and roll in the second rolling groove 43, a first rolling groove 61 is formed in the end surface of the limiting cylinder 60 close to the supporting cylinder 40, and the balls 90 are embedded and roll in the first rolling groove 61; the rod body 20 is further sleeved with a retainer 100, the retainer 100 is arranged between the limiting cylinder 60 and the supporting cylinder 40, and the retainer 100 is used for isolating the balls 90.

In one embodiment, the restraining canister 60 is welded directly to the shaft 20.

In one embodiment, referring to fig. 7, a set screw 110 is threadedly connected to the limiting cylinder 60, and the set screw 110 is threadedly connected to the rod 20 to detachably fix the limiting cylinder 60 to the rod 20.

The implementation principle of the embodiment is as follows:

when water is injected through the rod body 20 and the drilling head 70, the rod body 20 and the drilling head 70 can be driven by a drilling machine to rotate, soil and rock near the drill rod are cut and crushed, so that rock debris deposits around the buried drill rod can be conveniently flushed and suspended again, the torque of the buried drill rod and the drill bit is reduced, and the drill rod and the drill bit can be conveniently pulled out; meanwhile, water can be injected to the outer peripheral wall of the drill rod and the periphery of the drill rod through the first through hole 11 and the second through hole 12, so that mud on the outer peripheral wall of the drill rod can be removed conveniently through the outer sleeve, and the holding force of the mud on the drill rod is weakened.

During assembly, the limiting cylinder 60, the retainer 100 with the balls 90, the supporting cylinder 40, the retainer 100 with the balls 90 and the limiting cylinder 60 are sequentially sleeved on the rod body 20, so that the through hole 21 and the annular groove 41 are communicated with each other, then the limiting cylinder 60 is fixed on the rod body 20 through a set screw 110 or welding, and then the drilling head 70 is welded or in threaded connection with one end of the rod body 20 far away from the joint 30.

As shown in fig. 8, the outer sleeve 10 is formed by welding four sleeves.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A pipe washover tool comprising an outer sleeve (10), a rod body (20), and a joint (30), characterized in that: the connecting rod is characterized by also comprising a supporting cylinder (40) which is arranged at the outer side of the outer sleeve (10) and is used for the rod body (20) to penetrate through, and two connecting plates (50) which are welded at two sides of the supporting cylinder (40) and one end of each connecting plate is welded with the supporting cylinder (40) and the other end of each connecting plate is welded with the outer sleeve (10);

the rod body (20) penetrates through the support barrel (40) and is rotatably connected with the support barrel (40), two limiting barrels (60) fixed with the rod body (20) are further sleeved on the rod body (20), and the two limiting barrels (60) are respectively abutted against two ends of the support barrel (40);

the drill rod is characterized in that a drilling head (70) is arranged at one end, away from the joint (30), of the rod body (20), a plurality of spray holes (71) are formed in the peripheral wall of the drilling head (70), and a plurality of cutting knives (72) are welded to the peripheral wall of the drilling head (70).

2. The drill pipe washover tool of claim 1, wherein: the cutting knife (72) and the axis of the rod body (20) are arranged in an acute angle.

3. The drill pipe washover tool of claim 1, wherein: annular groove (41) have been seted up on the internal perisporium of a support section of thick bamboo (40), set up a plurality of through-holes (21) that communicate each other with annular groove (41) on the periphery wall of the body of rod (20), shrouding (51) have all been welded to the both sides of connecting plate (50), two shrouding (51) with the periphery wall of connecting plate (50), the periphery wall of a support section of thick bamboo (40), outer sleeve (10) is formed with closed groove (80), set up intercommunication hole (42) that a plurality of one end annular grooves (41) communicate each other the other end and closed groove (80) communicate each other on the periphery wall of a support section of thick bamboo (40), still set up at least one and closed groove (80) the first through-hole (11) that communicate each.

4. A drill pipe washover tool as in claim 3, wherein: the outer sleeve (10) is further provided with a plurality of second through holes (12), and the outer sleeve (10) is further provided with a communication groove (13) for communicating the second through holes (12) with the first through holes (11).

5. The drill pipe washover tool of claim 1, wherein: and the inner peripheral wall of the joint (30) far away from the rod body (20) is provided with an internal thread (31) connected with the drill rod.

6. The drill pipe washover tool of claim 1, wherein: spacing section of thick bamboo (60) are close to one side of supporting a section of thick bamboo (40) and are provided with a plurality of balls (90), and supply ball (90) inlay establishes rolling first rolling groove (61), the both ends of supporting a section of thick bamboo (40) have all been seted up and have been supplied ball (90) to inlay establishes rolling second rolling groove (43), still the cover is equipped with two and supplies ball (90) to inlay holder (100) of establishing on the body of rod (20), holder (100) set up in spacing section of thick bamboo (60) and support between section of thick bamboo (40).

7. The drill pipe washover tool of claim 1, wherein: chamfers (14) are arranged at two ends of the outer sleeve (10).

8. The drill pipe washover tool of claim 1, wherein: the limiting cylinder (60) is fixed with the rod body (20) in a welding mode.

9. The drill pipe washover tool of claim 1, wherein: the outer peripheral wall of the limiting cylinder (60) is in threaded connection with a set screw (110) which is used for connecting the limiting cylinder (60) and the rod body (20).