Directional reamer capable of preventing deviation

Abstract

The utility model relates to the technical field of directional drilling construction equipment, and discloses an anti-deviation directional reamer which comprises a drill rod, a reamer body is fixedly installed on the arc-shaped outer wall of the drill rod, a pointed cone is fixedly installed on the arc-shaped outer surface of the reamer body, and a reversing assembly is arranged in the reamer body. By arranging the reversing assembly, due to high-speed rotation of the drill rod, transmission of a driving gear and a driven gear is matched, a reversing disc is driven to rotate relative to the reamer, and at the moment, an annular guide groove and a convex rod which are arranged in a wave shape are matched, so that an ejector rod and a conical rod are driven to intermittently move towards the side away from the center of the reamer; accordingly, the soil breaking effect of the reamer on the inner wall of a drill hole is improved, the reaming efficiency of the device is improved, meanwhile, the reversing disc rotating in the direction opposite to the rotating direction of the reamer can decelerate and slow flow mud generated during reaming, the mud is stably discharged, and the situation that the mud interferes with normal and stable rotation of the reamer is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to directional drilling construction equipment technical field, concretely is a directional reamer that can prevent deviation. BACKGROUND

[0002] In the directional drilling construction process, a guide hole is first opened, and then a reamer is used to expand the guide hole to the required size. However, the existing reamer is prone to deviation in the mud in the borehole due to its large gravity, resulting in an upper narrow and lower wide structure of the reaming, which is not conducive to the back dragging of the pipeline, and the drill cuttings generated by the reamer accumulate in front of the reaming bit, which is not conducive to the smooth reaming of the reamer. A large amount of drill cuttings moves to the annular space between the pipeline and the hole wall with the mud, which can scratch the outer wall of the pipeline, reducing the service life of the pipeline.

[0003] According to a horizontal directional drilling reamer (publication number: CN221346802U), in the above-mentioned application, one end of the spiral conveying rod extends into the conical shell, which is used to discharge the drill cuttings in the conical shell along the inside of the drill rod to avoid accumulation of the drill cuttings. The driving member is arranged on the conical shell and is used to drive the spiral conveying rod to rotate. The differential rotation of the drill rod and the spiral conveying rod causes the drill cuttings to be conveyed to the outside with the spiral conveying rod, so as to realize timely discharge of the drill cuttings, ensure smooth reaming, and improve the reaming efficiency.

[0004] However, in the actual use process of the above-mentioned device, although the outer surface of the reaming structure is provided with a plurality of sharp cones for assisting in breaking the soil to achieve reaming, the rotation direction remains fixed. The mud generated by breaking the soil and flushing moves in a relatively fixed direction around the drill rod and the reaming structure, which can cause the drill rod to deviate from the original position, resulting in deviation of the reaming position. In view of this, we propose a directional reamer that can prevent deviation. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a directional reamer that can prevent deviation to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a directional reamer that can prevent deviation, comprising a drill rod, an arc-shaped outer wall of the drill rod is fixedly installed with a reamer, an arc-shaped outer surface of the reamer is fixedly installed with a sharp cone, and an arc-shaped outer wall of the reamer is provided with a slurry discharge groove. The inside of the reamer is provided with a reverse component, which comprises:

[0007] The reverse disc is rotationally installed on the arc-shaped outer wall of the drill rod, the driving gear is rotationally installed on the inner wall of the reverse disc, the fixed disc is rotationally installed on the arc-shaped outer wall of the drill rod, and the annular guide groove is arranged on the side wall of the fixed disc.

[0008] The rectangular cavity is arranged on the inner wall of the reverse disc, the rectangular slide is slidably installed on the inner wall of the rectangular cavity, the convex rod is rotationally installed on the inner wall of the rectangular slide, the top rod is fixedly installed on the outer wall of the side of the rectangular slide away from the drill rod, and the taper rod is arranged on the inner wall of the end of the top rod away from the rectangular slide.

[0009] Preferably, the drill rod is arranged at the shaft center of the reamer, the reamer is hollow, the reamer is arranged in a circular truncated cone shape, the reamer is provided with a large-diameter end and a small-diameter end, and the slurry discharge groove is arranged on the arc-shaped outer wall of the large-diameter end.

[0010] Preferably, the number of the fixed discs is two, and the two fixed discs are arranged on the left and right sides of the reverse disc, so that the rotation stability of the reverse disc in the reamer is ensured, and the annular guide groove is arranged in a wave shape.

[0011] Preferably, the shaft center of the reverse disc is provided with a circular cavity, the driving gear and the driven gear are arranged in the circular cavity, in particular, the arc-shaped inner surface of the circular cavity is provided with a tooth pattern which is engaged with the driven gear and realizes transmission, and the driven gear is engaged with the driving gear and realizes transmission.

[0012] Preferably, the inner wall of the reverse disc is provided with a through hole matched with the outer diameter of the top rod, and the top rod is arranged in the through hole.

[0013] Preferably, the end of the top rod away from the rectangular slide is provided with a torsion assembly, the torsion assembly comprises a cylindrical groove, the cylindrical groove is arranged on the inner wall of the end of the top rod away from the rectangular slide, the arc-shaped inner surface of the cylindrical groove is provided with a spiral chute, the arc-shaped outer wall of the taper rod is fixedly provided with a convex ball, and the end inner wall of the cylindrical groove is fixedly connected with a return spring.

[0014] Preferably, the end inner wall of the taper rod close to the cylindrical groove is provided with a T-shaped ring groove, the end of the return spring close to the taper rod is provided with a T-shaped block matched with the T-shaped ring groove, the T-shaped block is rotationally installed in the T-shaped ring groove, under the elastic force of the return spring, the taper rod can move linearly along the inner wall of the cylindrical groove, and the rotation of the taper rod is not affected.

[0015] Compared with the prior art, the directional reamer can prevent deviation.

[0016] 1. The anti-deviation directional reamer, by setting the reverse assembly, due to the high-speed rotation of the drill rod, cooperating with the transmission of the driving gear and the driven gear, to drive the reverse disc to rotate relative to the reamer, at this time, cooperating with the wave-shaped annular guide groove and the convex rod, to drive the top rod and the taper rod to move intermittently away from the center of the reamer, thereby improving the soil breaking effect of the reamer on the inner wall of the hole, and further improving the reaming efficiency of the device, and the reverse disc rotating in the opposite direction of the reamer can slow down and buffer the mud generated by reaming, so that it is smoothly discharged, avoiding interference with the normal stable rotation of the reamer.

[0017] 2. The anti-deviation directional reamer, by setting the torsion assembly, when the drill rod and the reamer are rotated at high speed to realize reaming operation, the top rod is driven by the rectangular sliding block to reciprocate in the through hole, cooperating with the taper rod to fit the inner wall of the hole, so that the taper rod shrinks into the cylindrical groove, at this time, cooperating with the spiral chute and the convex ball, so that the taper rod shrinks while rotating, to improve the soil breaking effect of the device on the inner wall of the hole during reaming, and improve the reaming efficiency of the device. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the sectional structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the local explosion of the reverse assembly of the utility model;

[0021] Figure 4 It is a schematic diagram of the sectional structure of the reverse disc of the utility model;

[0022] Figure 5 It is a schematic diagram of the sectional structure of the top rod of the utility model.

[0023] In the drawing: 1, drill rod; 2, reamer; 3, sharp taper; 4, mud discharge groove; 5, reverse assembly; 51, reverse disc; 52, driving gear; 53, driven gear; 54, fixed disc; 55, annular guide groove; 56, rectangular cavity; 57, rectangular sliding block; 58, convex rod; 59, top rod; 510, taper rod; 6, torsion assembly; 61, cylindrical groove; 62, spiral chute; 63, convex ball; 64, return spring. DETAILED DESCRIPTION

[0024] As Figures 1-5The utility model provides a kind of anti-deviation directional reamer, including drill rod 1, the arc outer wall of drill rod 1 is fixedly installed with reamer 2, the arc outer surface of reamer 2 is fixedly installed with sharp cone 3, the arc outer wall of reamer 2 is equipped with slurry discharge groove 4, the inside of reamer 2 is provided with reverse assembly 5, reverse assembly 5 includes reverse disc 51, driving gear 52, driven gear 53, fixed disc 54, annular guide groove 55, rectangular cavity 56, rectangular slide 57, convex rod 58 and taper rod 510.

[0025] In an embodiment of the utility model, reverse disc 51 is rotatably installed on the arc outer wall of drill rod 1, driving gear 52 is fixedly installed through drill rod 1, driven gear 53 is rotatably installed on the inner wall of reverse disc 51, fixed disc 54 is fixedly installed through the arc outer wall of drill rod 1, annular guide groove 55 is formed in the side wall of fixed disc 54, rectangular cavity 56 is formed in the inner wall of reverse disc 51, rectangular slide 57 is slidably installed in the inner wall of rectangular cavity 56, convex rod 58 is fixedly installed through the inner wall of rectangular slide 57, top rod 59 is fixedly installed on the outer wall of the side of rectangular slide 57 away from drill rod 1, taper rod 510 is arranged on the inner wall of the end of top rod 59 away from rectangular slide 57.

[0026] Further, drill rod 1 is arranged at the axis of reamer 2, and reamer 2 is hollow, and reamer 2 is arranged in the shape of a circular truncated cone, and reamer 2 is provided with a large-diameter end and a small-diameter end, and slurry discharge groove 4 is arranged on the arc outer wall of the large-diameter end, specifically, a plurality of groups of sharp cones 3 are arranged, and the plurality of groups of sharp cones 3 are evenly distributed in a circumferential array on the arc outer surface of reamer 2, in addition, drill rod 1 is hollow, and a water outlet hole is formed in the arc outer wall of reamer 2, and the water outlet hole is connected with the through hole formed in the arc outer wall of drill rod 1, so that the water in drill rod 1 can be sprayed outwards through the water outlet hole, to realize water blowing in the drill hole, so that the waste soil and water generated by reaming can be mixed to form mud, which can be discharged outward, which can facilitate chip removal during reaming, and can also reduce the surface temperature of reamer 2, to improve the reaming efficiency of the device.

[0027] In addition, the number of the fixed disc 54 is provided with two groups, and the two groups of fixed disc 54 are arranged on the left and right sides of the reverse disc 51 respectively, so as to ensure the rotation stability of the reverse disc 51 in the reamer 2, meanwhile, the annular guide groove 55 is arranged in a wave shape, and a circular cavity is formed at the axis of the reverse disc 51, the driving gear 52 and the driven gear 53 are arranged in the circular cavity, specifically, the arc inner surface of the circular cavity is provided with a tooth pattern which is engaged with the driven gear 53 and realizes transmission, and the driven gear 53 is engaged with the driving gear 52 and realizes transmission, so that in the process of rotating the drill rod 1, the transmission of the driving gear 52 and the driven gear 53 is matched, so that the reverse disc 51 rotates at a lower speed than the drill rod 1, that is, the relative rotation between the reverse disc 51 and the reamer 2 can occur, and the end of the convex rod 58 is arranged in the annular guide groove 55, so that in the process of relative rotation between the reverse disc 51 and the fixed disc 54, the annular guide groove 55 is guided and driven, so that the rectangular slide block 57 can move linearly along the inner wall of the rectangular cavity 56.

[0028] Specifically, the inner wall of the reverse disc 51 is provided with a through hole matched with the outer diameter of the top rod 59, and the top rod 59 is arranged in the through hole. In the process of expanding the hole by the drill rod 1 and the reamer 2, due to the high-speed rotation of the drill rod 1, the transmission of the driving gear 52 and the driven gear 53 is matched to drive the reverse disc 51 to rotate relative to the reamer 2. At this time, the annular guide groove 55 arranged in a wave shape is matched with the convex rod 58 to drive the top rod 59 and the taper rod 510 to move intermittently away from the center of the reamer 2, so as to improve the soil breaking effect of the reamer 2 on the inner wall of the hole, and further improve the reaming efficiency of the device. Meanwhile, the reverse disc 51 rotating in the opposite direction of the reamer 2 can slow down and buffer the mud generated by reaming, so as to avoid interference with the normal and stable rotation of the reamer 2.

[0029] Please refer to the drawings in the description Figure 5 In the embodiment of the utility model, the one end of the top rod 59 away from the rectangular slide block 57 is provided with a torsion assembly 6, the torsion assembly 6 includes a cylindrical groove 61, the cylindrical groove 61 is arranged on the inner wall of the one end of the top rod 59 away from the rectangular slide block 57, the arc inner surface of the cylindrical groove 61 is provided with a spiral chute 62, the arc outer wall of the taper rod 510 is fixedly installed with a convex ball 63, and the end inner wall of the cylindrical groove 61 is fixedly connected with a return spring 64.

[0030] Notable is that the conical rod 510 is provided with a T-shaped ring groove on the inner wall of one end of the cylindrical groove 61, and the reset spring 64 is provided with a T-shaped block matched with the T-shaped ring groove on one end close to the conical rod 510, the T-shaped block is rotatably installed in the T-shaped ring groove, under the elastic force of the reset spring 64, the conical rod 510 can move linearly along the inner wall of the cylindrical groove 61, meanwhile, the rotation of the conical rod 510 is not affected, further, a plurality of notch grooves are arranged on the arc surface of one end of the conical rod 510 away from the reset spring 64, so that the soil breaking effect of the conical rod 510 on the inner wall of the drill hole is improved, and the reaming efficiency of the device is improved, specifically, when the drill rod 1 and the reamer 2 rotate at high speed to realize reaming, the reciprocating movement of the top rod 59 in the through hole is driven by the rectangular sliding block 57, and the conical rod 510 is matched with the inner wall of the drill hole, so that the conical rod 510 can be retracted into the cylindrical groove 61, at this time, the conical rod 510 is matched with the spiral chute 62 and the convex ball 63, so that the conical rod 510 can rotate while being retracted, so that the soil breaking effect of the device on the inner wall of the drill hole is improved, and the reaming efficiency of the device is improved.

[0031] In the utility model, when using, the end of drill rod 1 is connected with the output end of external output device through the shaft coupling, and the water supply device is connected with the internal cavity of drill rod 1 through the communicating vessel, and the external output device and water supply device are started, because of the high speed rotation of drill rod 1, the transmission of driving gear 52 and driven gear 53 is matched, so as to drive reverse disc 51 to rotate relatively to reamer 2, at this time, convex rod 58 and annular guide groove 55 are matched, so as to drive top rod 59 to move intermittently to the side away from the center of reamer 2, so that the soil breaking effect of reamer 2 on the inner wall of the drill hole is improved, and the reaming efficiency of the device is improved, and reverse disc 51 rotating in the opposite direction of reamer 2 can slow down and buffer the mud generated by reaming, so that it is stably discharged, avoiding interference with the normal and stable rotation of reamer 2.

[0032] The above is a detailed description of the utility model, but some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, the modifications or improvements without departing from the spirit of the utility model are within the protection scope of the utility model.

Claims

1. A directional reamer with anti-deviation capability, comprising a drill rod (1), a reamer (2) fixedly mounted on the arc-shaped outer wall of the drill rod (1), a pointed cone (3) fixedly mounted on the arc-shaped outer surface of the reamer (2), and a slurry discharge groove (4) formed on the arc-shaped outer wall of the reamer (2), characterized in that: The reversing component (5) is provided inside the hole expander (2), and the reversing component (5) includes: A reversing disk (51) is rotatably mounted on the arc-shaped outer wall of the drill rod (1). The drill rod (1) is penetrated and fixedly mounted with a drive gear (52). A driven gear (53) is rotatably mounted on the inner wall of the reversing disk (51). A fixed disk (54) is penetrated and fixedly mounted on the arc-shaped outer wall of the drill rod (1). An annular guide groove (55) is provided on the side wall of the fixed disk (54). A rectangular cavity (56) is formed on the inner wall of the reversing disk (51). A rectangular slider (57) is slidably installed on the inner wall of the rectangular cavity (56). A protruding rod (58) is fixedly installed through the inner wall of the rectangular slider (57). A top rod (59) is fixedly installed on the outer wall of the rectangular slider (57) away from the drill rod (1). A tapered rod (510) is provided on the inner wall of the end of the top rod (59) away from the rectangular slider (57).

2. The directional reamer with anti-deviation capability according to claim 1, characterized in that: The drill rod (1) is located at the axis of the reamer (2), and the reamer (2) is hollow inside. The reamer (2) is frustum-shaped and has a large diameter end and a small diameter end. The slurry discharge groove (4) is located on the arc-shaped outer wall of the large diameter end.

3. The directional reamer with anti-deviation capability according to claim 1, characterized in that: The number of fixed disks (54) is set to two sets, and the two sets of fixed disks (54) are respectively set on the left and right sides of the reversing disk (51).

4. The directional reamer with anti-deviation capability according to claim 1, characterized in that: The rotating disk (51) has a circular cavity at its axis. The driving gear (52) and the driven gear (53) are both located inside the circular cavity. The arc-shaped inner surface of the circular cavity is provided with tooth patterns that mesh with the driven gear (53) to achieve transmission. The driven gear (53) meshes with the driving gear (52) to achieve transmission.

5. The directional reamer with anti-deviation capability according to claim 1, characterized in that: The inner wall of the reversing disc (51) is provided with a through hole that matches the outer diameter of the push rod (59), and the push rod (59) is located inside the through hole.

6. The directional reamer with anti-deviation capability according to claim 1, characterized in that: A torsion assembly (6) is provided at the end of the top rod (59) away from the rectangular slider (57). The torsion assembly (6) includes a cylindrical groove (61). The cylindrical groove (61) is opened on the inner wall of the end of the top rod (59) away from the rectangular slider (57). A spiral groove (62) is opened on the arc-shaped inner surface of the cylindrical groove (61). A convex ball (63) is fixedly installed on the arc-shaped outer wall of the cone rod (510). A return spring (64) is fixedly connected to the inner wall of the end of the cylindrical groove (61).

7. A directional reamer with anti-deviation capability according to claim 6, characterized in that: The tapered rod (510) has a T-shaped annular groove on the inner wall of the end near the cylindrical groove (61), and the return spring (64) has a T-shaped block that matches the T-shaped annular groove at the end near the tapered rod (510). The T-shaped block is rotatably installed inside the T-shaped annular groove.

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