CN217106834U

CN217106834U - Roller and cone integrated cutting unit

Info

Publication number: CN217106834U
Application number: CN202121107603.3U
Authority: CN
Inventors: 张素玲; 佟功喜
Original assignee: Tianjin Bowei Zhongtian Drilling Tools Co ltd
Current assignee: Tianjin Bowei Zhongtian Drilling Tools Co ltd
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2022-08-02
Anticipated expiration: 2031-05-24

Abstract

The utility model discloses a roller and cone integrated cutting unit, which relates to the technical field of horizontal directional drilling pipeline crossing construction, and comprises a cone and a roller, wherein a connecting part is arranged between the cone and the roller and is used for connecting the cone and the roller; the roller is sleeved on the connecting portion and can rotate around the connecting portion. The utility model discloses a combine gear wheel and roller, and the roller is arranged in the rear of gear wheel, earlier cut through the gear wheel during drilling, the gear wheel cutting back, the roller tightly supports the pore wall at the back and gives the enlarger aligning simultaneously, the beating of ream bit because of cutting the production has been weakened, the pore-forming effect is better, and the roller can play certain guard action to the gear wheel, improve its wearability, gear wheel and roller pass through connecting portion welding on the ream bit, can guarantee the precision, can guarantee welding strength again, the steadiness is good, this design becomes pure roll to the sliding friction of traditional enlarger cutting unit and hole bottom, the moment of torsion has been reduced by a wide margin.

Description

Roller and cone integrated cutting unit

Technical Field

The utility model relates to a horizontal directional drilling pipeline passes through construction technical field, specifically is a roller cone integral type cutting unit.

Background

At present, a centralizer is often connected to the front end or the rear end of a reamer in a reaming process of a horizontal directional drilling machine, the centralizer is generally in a barrel type, roller type and other forms, the centralizer is easy to wear after being used for a long time, the existing roller type centralizer is a front centralizer which is slightly smaller than a pilot hole, a steel plate barrel ring wear-resistant belt or a wear-resistant steel plate is generally required to be welded on the centralizer to improve the wear resistance of the centralizer, the cost is high, the roller centralizer is generally connected with the reamer through threads, and the roller type reamer is generally connected with the reamer through a roller shaft.

The prior patents such as Chinese patent publication numbers are: CN201802312U, the name of this patent is "cone mechanism for rock reamer", this patent includes cone and cone seat, the cone be connected with the cone handle, be provided with a square groove in the cone seat, the cross-section of square groove be the rectangle, be provided with a cuboid piece in the square groove, be provided with a trapezoidal groove in the upper surface of cuboid piece, the angle of a base angle in trapezoidal groove be 120 degrees, the cross-section in trapezoidal groove and the cross-section cooperation of cone handle, cone handle and cuboid piece welded fastening, cuboid piece is connected with the cone seat through two locating pins. The reamer is used for being matched with a reamer to perform reaming treatment.

The roller type centralizer and the roller type centralizer in the prior art are usually used independently, the roller type centralizer is easy to wear after being used for a long time, and has poor wear resistance, and the roller type centralizer is usually connected with an underreamer by adopting a screw thread, so that after the screw thread is used for a long distance or for a long time, single-point stress is concentrated, and the state of over fatigue and the like is easy to occur, and the roller is separated; and the roller shaft is easy to break or partially wear after the roller type reamer is used for a long time. Accordingly, one skilled in the art provides a roller cone integrated cutting unit to solve the problems set forth in the background above.

Disclosure of Invention

An object of the utility model is to provide a roller cone integral type cutting unit to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a roller and cone integrated cutting unit comprises a cone and a roller, wherein a connecting part is arranged between the cone and the roller and used for connecting the cone and the roller; the roller is sleeved on the connecting portion and can rotate around the connecting portion.

As a further description of the above technical solution: the connecting portion comprises a gripper leg, one end of the gripper leg is provided with a connecting shaft, the other end of the gripper leg is provided with a connecting block, first grooves are symmetrically formed in the gripper leg, and second grooves are symmetrically formed in the connecting shaft.

As a further description of the above technical solution: the roller comprises a roller, tapered surfaces are arranged at two ends of the roller, and a second mounting hole matched with the connecting shaft is formed in the axis of the roller.

As a further description of the above technical solution: and the cone is provided with a first mounting hole matched with the connecting block.

As a further description of the above technical solution: the tooth palm is embedded with second wear-resistant teeth.

As a further description of the above technical solution: the surface embedding of cylinder is provided with first resistant tooth.

As a further description of the above technical solution: the diameter of the roller is smaller than that of the roller cone.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a roller and cone integrated cutting unit, through effectively combining cone and roller, and the roller is arranged at the rear of cone, the roller is directly smaller than the diameter of cone, cut through the cone earlier in the drilling process, after the cone is cut, the roller tightly supports the pore wall at the back and simultaneously aligns the reamer, the jumping of reamer bit due to cutting is weakened, the pore-forming effect is better, and the roller can play certain protection role to the cone, improve its wear resistance, prolong the service life of cutting unit, cone and roller are welded on the reamer head through the connecting part, not only can the precision be guaranteed, but also the welding strength can be guaranteed, the stability is improved, the sliding friction of traditional reamer cutting unit and hole bottom is changed into pure rolling, the torque is greatly reduced, the problem that the wear resistance of cone centralizer and roller centralizer in the prior art is poor is solved, and the problems that the roller cone is easy to separate and the roller shaft is easy to break.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.

FIG. 1 is a schematic view of a roller cone integrated cutting unit;

FIG. 2 is an exploded view of a roller cone integrated cutting unit;

FIG. 3 is a top view of a roller cone integrated cutting unit;

fig. 4 is a schematic view of an installation structure of a roller cone integrated cutting unit and a reamer bit.

Description of reference numerals:

81. a cone; 811. a first mounting hole; 82. a roller; 821. a drum; 822. a conical surface; 823. a second mounting hole; 824. a first wear resistant tooth; 83. a connecting portion; 831. a bit leg; 832. a connecting shaft; 833. connecting blocks; 834. a first groove; 835. a second groove; 836. a second wear resistant tooth; 1. a mandrel; 2. a cylinder; 3. an upper cover plate; 31. a first mounting groove; 4. a lower supporting plate; 41. a second mounting groove; 5. a front rib plate; 6. an arc-shaped plate; 7. and a rear rib plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 4, an embodiment of the present invention provides a technical solution: a roller and cone integrated cutting unit comprises a cone 81 and rollers 82, wherein the cone 81 can cut large-particle-size rocks, the rollers 82 can crush large-particle rock dregs at the bottom of a hole, mud is convenient to carry, and simultaneously hole expanding and aligning are carried out by supporting the wall of the hole, so that the service life of the cutting unit can be prolonged, the wear resistance of the cutting unit is improved, a connecting part 83 is arranged between the cone 81 and the rollers 82, the connecting part 83 is used for connecting the cone 81 and the rollers 82, and meanwhile, the fixing of a cutting centralizing part and a hole expanding drill bit is convenient; the roller 82 is sleeved on the connecting part 83, and the roller 82 can rotate around the connecting part 83, the utility model effectively combines the roller with the roller, the roller 82 is arranged at the rear part of the roller 81, the diameter of the roller 82 is directly smaller than that of the roller 81, the roller 81 cuts in the drilling process, after the roller 81 cuts, the roller 82 tightly supports the hole wall and aligns the reamer at the back, the jumping of the reamer bit caused by cutting is weakened, the hole forming effect is better, the roller 82 can play a certain protection role on the roller 81, the wear resistance of the roller is improved, the service life of the cutting unit is prolonged, the roller 81 and the roller 82 are welded on the reamer bit through the connecting part 83, the precision can be ensured, the welding strength can be ensured, the stability of the roller is improved, the sliding friction between the cutting unit of the traditional reamer and the hole bottom is changed into pure rolling, the torque is greatly reduced, the problems that in the prior art, a roller cone centralizer and a roller centralizer are poor in wear resistance, a roller cone 81 is prone to being separated from the roller shaft, and the roller shaft is prone to being broken are solved.

Specifically, fix the cutting unit on reamer head through connecting portion 83, in the use, cut big particle diameter rock earlier through gear wheel 81, roller 82 carries out the breakage to hole bottom large granule rock sediment again, makes things convenient for mud to carry, can prolong the life of cutting unit, improves its wearability, and roller 82 supports the pore wall simultaneously and carries out the reaming aligning, has weakened reamer head because of cutting the jump that produces, and the pore-forming effect is better.

The utility model provides a further embodiment, connecting portion 83 includes bit leg 831, and the one end of bit leg 831 is provided with connecting axle 832, and the other end is provided with connecting block 833, and first recess 834 has been seted up to the symmetry on bit leg 831, and second recess 835 has been seted up to the symmetry on connecting axle 832, fixes the cutting element on the reamer head through first recess 834 and second recess 835, realizes the two point formulas of cutting element and supports, improves its steadiness, reduces the drill bit and beats.

The utility model provides a further embodiment, roller 82 includes cylinder 821, and cylinder 821's both ends all are provided with conical surface 822 and play certain transition guard action, and cylinder 821's axle center department offer with the second mounting hole 823 of connecting axle 832 looks adaptation, and cylinder 821 rotates around second mounting hole 823.

The utility model provides a further embodiment, set up the first mounting hole 811 with connecting block 833 looks adaptation on gear wheel 81 for fixed gear wheel 81.

The utility model provides a further embodiment, the embedding is provided with second wear-resisting tooth 836 on bit palm 831, and the surface embedding of cylinder 821 is provided with first wear-resisting tooth 824, and first wear-resisting tooth 824 and second wear-resisting tooth 836 adopt the carbide material, can improve the wearability of bit palm 831 and cylinder 821.

Specifically, the cutting unit is installed on a reaming bit body of the reaming bit, the reaming bit body comprises a mandrel 1, the mandrel 1 is of a hollow structure, the mandrel 1 is provided with a jet hole, slurry is jetted through the jet hole to wash the cutting unit 8 and play a certain role in rock breaking, the mandrel 1 is sleeved with a cylinder 2, the cylinder 2 is fixed on the mandrel 1, one side of the cylinder 2 is provided with an upper cover plate 3, the other side of the cylinder 2 is provided with a lower support plate 4, the upper cover plate 3 is fixed at the front end of the cylinder 2, one side of the upper cover plate 3 is provided with a plurality of front rib plates 5 along the circumferential direction of the mandrel 1 for realizing reaming processing of the bit, the stability of the upper cover plate 3 and the stability of the mandrel 1 are increased simultaneously, two adjacent front rib plates 5 are connected through an arc plate 6, the stability of the front rib plates 5 is increased, the lower support plate 4 is fixed at the rear end of the cylinder 2, one side of the lower support plate 4 is provided with a plurality of rear rib plates 7 along the circumferential direction of the mandrel 1, the rear rib plate 7 is used for improving the connection stability of the lower supporting plate 4 and the mandrel 1, two ends of the cutting unit 8 are respectively embedded on the upper cover plate 3 and the lower supporting plate 4, so that the double-pivot support of the cutting unit 8 is realized, the stability of the cutting unit 8 and the reamer bit body is improved, a first mounting groove 31 and a first chip-removing groove 32 are formed in the circumferential direction of the upper cover plate 3, the first mounting groove 31 and the first chip-removing groove 32 are distributed in a staggered manner, a first shaft hole 33 matched with the mandrel 1 is formed in the shaft center of the upper cover plate 3, a second mounting groove 41 and a second chip-removing groove 42 are formed in the circumferential direction of the lower supporting plate 4, the second mounting groove 41 and the second chip-removing groove 42 are distributed in a staggered manner, a second shaft hole 43 matched with the mandrel 1 is formed in the shaft center of the lower supporting plate 4, the first groove 834 is matched with the second mounting groove 41 on the lower supporting plate 4, so that the connecting shaft 832 is fixed in the second mounting groove 41, second recess 835 and the first mounting groove 31 looks adaptation on the upper cover plate 3 for bit leg 831 is fixed in first mounting groove 31, improves the location effect of cutting unit 8 and reamer bit body, guarantees its fixed strength, and roller 82 arranges in between upper cover plate 3 and bottom plate 4, makes roller 82 enough can follow the rotation of connecting axle 832 and can prevent roller 82 back-and-forth movement again.

The utility model discloses a theory of operation does: fix connecting axle 832 in second mounting groove 41 earlier, bit palm 831 is fixed in first mounting groove 31, fix the cutting unit on the reamer bit body, rethread reamer bit carries out the reaming operation, the reaming in-process, earlier cut through gear wheel 81, gear wheel 81 cuts the back, roller 82 is tightly supporting the pore wall and is giving the aligning reamer simultaneously afterwards, has weakened the jump that the reamer bit produced because of the cutting, the pore-forming effect is better, and roller 82 can play certain guard action to gear wheel 81, the utility model discloses a effectively combine gear wheel 81 and roller 82, improved its wearability, extension cutting unit's life, this design becomes pure roll to the sliding friction of traditional reamer cutting unit and hole bottom, has reduced the moment of torsion by a wide margin.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A roller cone integrated cutting unit is characterized in that: the roller cone comprises a roller cone (81) and a roller (82), wherein a connecting part (83) is arranged between the roller cone (81) and the roller (82), and the connecting part (83) is used for connecting the roller cone (81) and the roller (82);

the roller (82) is sleeved on the connecting portion (83), and the roller (82) can rotate around the connecting portion (83).

2. The roller cone integrated cutting unit of claim 1, wherein: connecting portion (83) are including palm of tooth (831), the one end of palm of tooth (831) is provided with connecting axle (832), and the other end is provided with connecting block (833), first recess (834) have been seted up to the symmetry on palm of tooth (831), second recess (835) have been seted up to the symmetry on connecting axle (832).

3. The roller cone integrated cutting unit of claim 2, wherein: the roller (82) comprises a roller (821), tapered surfaces (822) are arranged at two ends of the roller (821), and a second mounting hole (823) matched with the connecting shaft (832) is formed in the axis of the roller (821).

4. The roller cone integrated cutting unit of claim 2, wherein: and a first mounting hole (811) matched with the connecting block (833) is formed in the cone (81).

5. The roller cone integrated cutting unit of claim 2, wherein: and a second wear-resistant tooth (836) is embedded in the bit leg (831).

6. The roller cone integrated cutting unit according to claim 3, wherein: the surface of the drum (821) is provided with first wear-resistant teeth (824) in an embedded manner.

7. The roller cone integrated cutting unit of claim 1, wherein: the diameter of the roller (82) is smaller than that of the roller cone (81).