Reset power-assisted drill bit

Abstract

The utility model discloses a reset power-assisted drill bit, which belongs to the technical field of drill bits and comprises a directional drilling high-temperature-resistant drill bit, a transmission shaft is coaxially connected onto the high-temperature-resistant drill bit, and a sleeve is slidably connected outside the transmission shaft along the radial direction. A polygonal guide groove is formed in the transmission shaft in the radial direction, a polygonal guide rod is slidably connected into the polygonal guide groove, and the polygonal guide rod is fixedly connected to the sleeve. A power-assisted mechanism for guiding the transmission shaft and the high-temperature-resistant drill bit to move and reset is arranged in the sleeve; if the high-temperature-resistant drill bit deflects in the drilling process, the high-temperature-resistant drill bit can be helped to rapidly move, reset and move out of a drilled hole under the elastic assistance effect of the assistance mechanism, and the situation that the drill bit is violently abraded or damaged is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to drill bit technical field, concretely is a reset power -assisted drill bit. BACKGROUND

[0002] Drill bits are mainly used for drilling holes or breaking rocks on materials such as metal, wood, stone, and masonry. They cut or break materials through rotation or impact to form holes or cracks. Drill bits can be divided into manual, electric, pneumatic, and internal combustion engine driven types, suitable for different application scenarios.

[0003] For example, patent CN118167213B discloses a rock-soil drill bit, which includes a drill bit body and multiple cutters mounted on the drill bit body. Each cutter includes a retaining sleeve for fixing on the drill bit body, a cutting body including a main component and a disc-shaped cutter body formed on the head of the main component, the edge of the disc-shaped cutter body being used for cutting operations, the main component extending into the retaining sleeve and being able to extend and retract relative to the retaining sleeve, an elastic blocking component arranged between the main component and the retaining sleeve, which, when the axial force on the cutting body is greater than a preset axial force, removes the blocking of the main component through elastic deformation, allowing the cutting body to retract from the first position to the second position, and a reset spring arranged between the main component and the retaining sleeve for resetting the cutting body from the second position to the first position. During drilling, unstable drilling trajectories can cause the drill bit to deviate from the drilling direction, and the drill bit working under unstable conditions can cause increased wear and tear, shorten the service life, and possibly cause the drill bit to be stuck in the drilled hole, damaging the drilling equipment.

[0004] To address the above problems, it is necessary to innovate and design on the basis of the original drill bit. INVENTION CONTENTS

[0005] The utility model aims at providing a reset power -assisted drill bit to solve the problem of the drill bit deviating from the drilling direction due to unstable drilling trajectories during drilling, increased wear and tear, shortened service life, and the drill bit being stuck in the drilled hole, damaging the drilling equipment.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a reset power -assisted drill bit, including directional drilling high-temperature-resistant drill bit, the high-temperature-resistant drill bit is coaxially connected with transmission shaft, the outside of transmission shaft is slidably connected with sleeve along the radial direction;The polygonal guide groove is slidably connected with the polygonal guide rod in the polygonal guide groove, and the polygonal guide rod is fixedly connected to the sleeve. The sleeve is provided with a power -assisted mechanism for guiding the movement and reset of the transmission shaft and the high-temperature-resistant drill bit.

[0007] Preferably, the assisting mechanism comprises an upper fixed ring fixed in the sleeve and a lower fixed ring fixed on the end surface of the transmission shaft, the upper fixed ring and the lower fixed ring are vertically corresponding, and a plurality of elastic assisting components are arranged at equal angles in the circumference between the upper fixed ring and the lower fixed ring.

[0008] Preferably, the elastic assisting component comprises a directional assisting sliding seat arranged at equal angles in the circumference of the sleeve, and a main transmission rod is rotatably connected to the directional assisting sliding seat; a plurality of auxiliary transmission rods are rotatably connected to the upper fixed ring and the lower fixed ring at equal angles, and a reset spring is connected between the auxiliary transmission rod and the main transmission rod.

[0009] Preferably, a plurality of side grooves are arranged at equal angles in the inner side wall of the sleeve, and the directional assisting sliding seat is slidingly arranged in the side groove.

[0010] Preferably, an adjusting sliding rod is slidingly connected between the main transmission rod and the auxiliary transmission rod, and the reset spring is elastically sleeved outside the adjusting sliding rod.

[0011] Preferably, the detection mechanism for monitoring the off-center rotation of the transmission shaft and the high-temperature-resistant drill bit in real time is arranged on the polygonal guide rod.

[0012] Preferably, the detection mechanism comprises an embedded groove arranged at equal angles on the polygonal guide rod, and a pressure sensor is embeddedly arranged in the embedded groove; the pressure sensor is arranged at a position corresponding to the inner side wall of the transmission shaft.

[0013] Compared with the prior art, the reset assisting type drill bit has the beneficial effects that: the transmission shaft and the sleeve enable the high-temperature-resistant drill bit to move up and down, and the high-temperature-resistant drill bit can be controlled to reset when the drilling direction of the high-temperature-resistant drill bit is deviated, thereby improving the protection of the high-temperature-resistant drill bit.

[0014] Further, the assisting mechanism for guiding the movement and reset of the transmission shaft and the high-temperature-resistant drill bit is arranged in the sleeve, the high-temperature-resistant drill bit reversely moves along the direction of the polygonal guide rod during the drilling process, so that the high-temperature-resistant drill bit is quickly moved out of the hole drilled, thereby avoiding the high-temperature-resistant drill bit from being stuck in the hole and being further worn.

[0015] The adjusting sliding rod is elastically and telescopically connected with the main transmission rod and the auxiliary transmission rod through the reset spring, and under the elastic and telescopic adjustment, the adjusting sliding rod can elastically assist the high-temperature-resistant drill bit to reset, so that the drilling equipment can automatically rotate the drill bit when the drilling equipment is stuck, thereby releasing the stuck state and restoring the normal work.

[0016] The directional assisting sliding seat is arranged at equal angles in the sleeve, and the directional assisting sliding seat is connected with the main transmission rod, the auxiliary transmission rod and the reset spring in the vertical direction, which can elastically assist the high-temperature-resistant drill bit to reset in multiple directions, thereby keeping the uniformity of the reset force of the high-temperature-resistant drill bit.

[0017] Further, the polygon guide rod is provided with a detection mechanism for monitoring the transmission shaft and the off-center rotation of the high-temperature-resistant drill bit in real time. When the high-temperature-resistant drill bit is inclined during drilling, the pressure sensor surface of the polygon guide rod periphery is in contact with the inner wall of the transmission shaft, and the pressure sensor surface is pressed to quickly detect the inclination of the high-temperature-resistant drill bit during drilling, thereby avoiding serious wear of the high-temperature-resistant drill bit. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a three-dimensional structure schematic view of the high-temperature-resistant drill bit of the utility model.

[0019] Figure 2 It is a sleeve cross-section structure schematic view of the utility model.

[0020] Figure 3 It is a three-dimensional structure schematic view of the polygon guide rod of the utility model.

[0021] Figure 4 It is a three-dimensional structure schematic view of the directional power sliding seat of the utility model.

[0022] Figure 5 It is a three-dimensional structure schematic view of the auxiliary transmission rod of the utility model.

[0023] Figure 6 It is a three-dimensional structure schematic view of the main transmission rod of the utility model.

[0024] Figure 7 It is a three-dimensional structure schematic view of the pressure sensor of the utility model.

[0025] In the figure: 1, high-temperature-resistant drill bit; 2, transmission shaft; 3, sleeve; 4, polygon guide groove; 5, polygon guide rod; 6, upper fixed ring; 7, lower fixed ring; 8, side groove; 9, directional power sliding seat; 10, main transmission rod; 11, auxiliary transmission rod; 12, adjusting sliding rod; 13, return spring; 14, embedded groove; 15, pressure sensor. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0027] Embodiment one: please refer to Figures 1-7The utility model provides following technical scheme: a reset power -assisted drill bit, including directional drilling's high temperature resistance drill bit 1, high temperature resistance drill bit 1 is coaxially connected with transmission shaft 2, the outside of transmission shaft 2 is slidably connected with sleeve 3 along the radial direction, the polygonal guide slot 4 of radial direction is seted up in transmission shaft 2, the polygonal guide rod 5 of radial direction is slidably connected in polygonal guide slot 4, and the polygonal guide rod 5 is fixedly connected on sleeve 3.

[0028] The power -assisted mechanism includes the upper fixed ring 6 fixed in the sleeve 3 and the lower fixed ring 7 fixed on the end surface of the transmission shaft 2, and the upper fixed ring 6 and the lower fixed ring 7 are distributed in a one-to-one correspondence.

[0029] The power -assisted mechanism includes the directional power -assisted slide 9 distributed in the sleeve 3 at equal angles, and the main transmission rod 10 is rotatably connected to the directional power -assisted slide 9.

[0030] The inside wall of the sleeve 3 is provided with a plurality of side grooves 8 at equal angles, and the directional power -assisted slide 9 is slidingly arranged in the side grooves 8.

[0031] During the drilling process of the high temperature resistance drill bit 1, if the drilling deviation or jamming occurs, during the process of controlling the reverse movement of the high temperature resistance drill bit 1, the high temperature resistance drill bit 1 controls the directional movement of the transmission shaft 2 inside the sleeve 3, the transmission shaft 2 is movably arranged outside the polygonal guide rod 5 through the polygonal guide slot 4, the adjusting slide rod 12 provides the elastic adjustment of the reset spring 13 penetrating the main transmission rod 10 and the auxiliary transmission rod 11, and pushes the directional power -assisted slide 9 to slidingly move inside the side grooves 8, the elastic structure provides the reset power for the high temperature resistance drill bit 1, and the directional power -assisted slide 9, the main transmission rod 10, the auxiliary transmission rod 11 and the reset spring 13 are arranged at equal angles inside the sleeve 3, which can uniformly assist the reset of the high temperature resistance drill bit 1 in multiple directions, and avoid the situation that the high temperature resistance drill bit 1 cannot move in the drilling hole due to the drilling deviation or jamming.

[0032] In the embodiment one, the detection mechanism is further disclosed, and the specific structure is as follows: the polygonal guide rod 5 is provided with a detection mechanism for monitoring the off-axis rotation of the transmission shaft 2 and the high temperature resistance drill bit 1 in real time.

[0033] When the high-temperature-resistant drill bit 1 is in the process of drilling, the transmission shaft 2 and the sleeve 3 are misaligned when the drilling is unstable and the high-temperature-resistant drill bit 1 is deflected, at this time, the polygon guide rod 5 is inserted into the polygon guide groove 4 and is close to the deflected side of the drilling, so that the pressure sensor 15 on the outer side of the polygon guide rod 5 is pressed on the inner wall of the polygon guide groove 4 on the inner side of the transmission shaft 2, and the deflection of the high-temperature-resistant drill bit 1 can be quickly sensed according to the pressure value change of the pressure sensor 15, so that the high-temperature-resistant drill bit 1 is quickly reset, and the depth of the deflected drilling is prevented from being too deep to aggravate the wear of the high-temperature-resistant drill bit 1, thereby prolonging the service life of the high-temperature-resistant drill bit 1.

[0034] In the description of the present application, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0035] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A reset assisted drill bit comprising a high temperature resistant drill bit (1) for directional drilling, characterised in that: The high-temperature-resistant drill bit (1) is coaxially connected with a transmission shaft (2), and the outer part of the transmission shaft (2) is slidingly connected with a sleeve (3) along the radial direction; A polygonal guide groove (4) is formed in the transmission shaft (2) along the radial direction, and a polygonal guide rod (5) is slidingly connected in the polygonal guide groove (4), and the polygonal guide rod (5) is fixedly connected to the sleeve (3); The sleeve (3) is provided with a power assisting mechanism for guiding the movement of the transmission shaft (2) and the high-temperature-resistant drill bit (1) to reset.

2. A reset assisted drill bit according to claim 1, wherein: The power assisting mechanism comprises an upper fixed ring (6) fixed in the sleeve (3) and a lower fixed ring (7) fixed on the upper end surface of the transmission shaft (2), and the upper fixed ring (6) and the lower fixed ring (7) are arranged in a one-to-one correspondence. A plurality of elastic power assisting components are arranged at equal angles in the circumferential direction between the upper fixed ring (6) and the lower fixed ring (7).

3. A reset assisted drill bit according to claim 2, wherein: The elastic power assisting component comprises a directional power assisting slide (9) arranged at equal angles in the circumferential direction in the sleeve (3), and a main transmission rod (10) is rotatably connected to the directional power assisting slide (9). A plurality of auxiliary transmission rods (11) are rotatably connected to the upper fixed ring (6) and the lower fixed ring (7) at equal angles, and a reset spring (13) is connected between the auxiliary transmission rod (11) and the main transmission rod (10).

4. A reset assisted drill bit according to claim 3, wherein: A plurality of side grooves (8) are formed at equal angles in the inner side wall of the sleeve (3), and the directional power assisting slide (9) is slidingly arranged in the side groove (8).

5. A reset assisted drill bit according to claim 3, wherein: An adjusting slide rod (12) is slidingly connected between the main transmission rod (10) and the auxiliary transmission rod (11), and the reset spring (13) is elastically sleeved on the outer part of the adjusting slide rod (12).

6. A reset assisted drill bit according to claim 1, wherein: The polygonal guide rod (5) is provided with a detection mechanism for monitoring the off-center rotation of the transmission shaft (2) and the high-temperature-resistant drill bit (1) in real time.

7. A reset assisted drill bit according to claim 6, wherein: The detection mechanism comprises an embedded groove (14) formed at equal angles on the polygonal guide rod (5), and a pressure sensor (15) is embeddedly installed in the embedded groove (14); The pressure sensor (15) is correspondingly arranged at the position of the inner side wall of the transmission shaft (2).

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