Composite reamer bit

Abstract

The utility model discloses a composite reamer bit, and relates to the technical field of drill bits. The composite reamer bit comprises a bit body, a splicing mechanism is mounted at the top end of the bit body, and a sleeving bit is movably clamped to the outer side of the splicing mechanism; by arranging the splicing mechanism, a drill bit body and a sleeving drill bit can be promoted to be attached through a connecting pile, then a built-in motor in a splicing rod is matched to promote a threaded ring to drive a hinge rod to drive a splicing pin to move transversely through a double-section screw, and the sleeving drill bit and the drill bit body are connected; according to the reamer bit, the drilling diameter of the reamer bit can be effectively increased, the drill bit can adapt to more kinds of drilling requirements through the adjustment, and therefore the universality of the reamer bit is remarkably improved, and the application range of the reamer bit is remarkably widened. The drill bit can provide more flexible and efficient solutions regardless of the requirements of small precision operation or large engineering projects.

Description

TECHNICAL FIELD

[0001] The utility model relates to drill bit technical field, concretely is a compound reaming drill bit. BACKGROUND

[0002] In the process of coal mine drilling, the drill bit is the main tool for breaking rock, and the wellbore is formed by breaking rock with the drill bit. The formation of a wellbore is good or bad, and the length of time used is related to the characteristics of the stratum drilled and the performance of the drill bit itself, and more related to the matching degree between the drill bit and the stratum. The reasonable selection of the drill bit plays an important role in improving the drilling speed and reducing the comprehensive cost of drilling.

[0003] Through the search, in patent announcement No. CN210264527U discloses a rock drill for rock drill, including drill rod, the lower side of the drill rod is fixedly connected with impact drill rod, the lower side of the impact drill rod is fixedly connected with impact drill, the outer side of the impact drill rod is provided with feed drill rod, the lower side of the feed drill rod is fixedly connected with feed drill, the upper side of the feed drill rod is provided with telescopic device, the inner diameter of the feed drill rod is greater than the outer diameter of the impact drill rod, the length of the feed drill rod is less than the length of the impact drill rod, the outer diameter of the feed drill rod is greater than the diameter of the drill rod

[0004] But the above scheme still has certain deficiency in actual use, the patent mainly realizes the switching work of the feed drill and the impact drill by setting compression spring, drill rod, impact drill rod, protective cover and the like, but since the hole diameter of the drill bit of the patent is constant, does not have the adjusting function, when needing to carry out the reaming work to the drill hole bottom, will be affected. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of compound reaming drill bit to solve the problem in background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of compound reaming drill bit, including drill bit body, the top of the drill bit body is equipped with splicing mechanism, the outer side of the splicing mechanism is movably connected with sleeve joint drill bit;

[0007] The splicing mechanism includes connecting pile, the top of the connecting pile is fixedly connected with splicing rod, the inside of the splicing rod is rotatably connected with double-section screw rod by built-in motor, the surface of the double-section screw rod is threadedly connected with two threaded rings, the outer side of two threaded rings is hingedly connected with splicing pin by hinged rod;

[0008] The sleeve joint drill bit includes hollow drill bit, the inside of the hollow drill bit is equipped with inlay opening, the hollow drill bit is movably connected with connecting pile and splicing rod by inlay opening, the inner wall of the inlay opening is equipped with splicing groove, and the splicing pin is located in the inside of the splicing groove.

[0009] Further, the surface of the double-section screw rod is provided with two sections of thread teeth in opposite directions, and the movement directions of the two thread rings are opposite.

[0010] Further, the surface of the splice rod is provided with an extension opening, and the splice pin extends to the outside of the splice rod through the extension opening.

[0011] Further, the inside of the splice rod is movably connected with a locking rack through an electric hydraulic push rod, the surface of the double-section screw rod is fixedly sleeved with a locking rack, and the locking rack is engaged with the locking rack.

[0012] Further, the outside of the hollow drill bit is provided with a protruding block.

[0013] Compared with the prior art, the composite reaming drill bit has the following beneficial effects:

[0014] The composite reaming drill bit is provided with a splice mechanism, the connecting pile can promote the adhesion between the drill bit body and the sleeved drill bit, and the built-in motor in the splice rod can promote the horizontal displacement of the splice pin through the double-section screw rod, so that the sleeved drill bit and the drill bit body are connected, the drilling diameter of the reaming drill bit can be effectively increased, the adjustment makes the drill bit adapt to more types of drilling requirements, and the versatility and application range of the reaming drill bit are significantly improved. Whether it is a small precision operation or a large engineering project, such a drill bit can provide more flexible and efficient solutions. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the utility model;

[0016] Figure 2 It is a splice mechanism schematic view of the utility model;

[0017] Figure 3 It is a splice rod sectional view of the utility model;

[0018] Figure 4 It is Figure 3 It is a structure enlarged schematic view of A in the middle;

[0019] Figure 5 It is a sleeved drill bit schematic view of the utility model.

[0020] In the figure: 1, drill bit body; 2, splicing mechanism; 201, connecting pile; 202, splicing rod; 203, built-in motor; 204, double-section screw rod; 205, threaded ring; 206, articulated rod; 207, splicing pin; 208, extension port; 209, electric hydraulic push rod; 210, locking rack; 211, locking rack ring; 3, sleeved drill bit; 301, hollow drill bit; 302, protruding block; 303, inlaid port; 304, splicing groove. DETAILED DESCRIPTION

[0021] 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 protection scope of the utility model.

[0022] Please refer to Figures 1-5 The utility model discloses a composite reaming drill bit, including drill bit body 1, the top of drill bit body 1 installs splicing mechanism 2, the outside of splicing mechanism 2 swing has sleeve joint drill bit 3, splicing mechanism 2 includes connecting pile 201, the top of connecting pile 201 is fixedly connected with splicing rod 202, the inside of splicing rod 202 is rotatably connected with double-section screw rod 204 through built-in motor 203, the surface of double-section screw rod 204 is connected with two threaded rings 205, the surface of double-section screw rod 204 is provided with two sections of opposite direction thread tooth, the movement direction of two threaded rings 205 is opposite, the outside of two threaded rings 205 is through articulated rod 206 and is hinged with splicing pin 207.

[0023] Sleeve joint drill bit 3 includes hollow drill bit 301, the inside of hollow drill bit 301 is set up inlaid port 303, hollow drill bit 301 is through inlaid port 303 and is movably connected with connecting pile 201 and splicing rod 202, the inner wall of inlaid port 303 is set up with splicing groove 304, splicing pin 207 is located in the inside of splicing groove 304.

[0024] By setting the splicing mechanism 2, the drill bit body 1 and the sleeve drill bit 3 can be connected by the connecting pile 201, and the sleeve drill bit 3 and the drill bit body 1 can be connected by the built-in motor 203 in the splicing rod 202 through the double-section screw rod 204 to drive the threaded ring 205 to drive the splicing pin 207 to move horizontally, so that the sleeve drill bit 3 and the drill bit body 1 are connected, which can effectively increase the drilling diameter of the reaming drill bit. Such adjustment makes the drill bit adapt to more types of drilling requirements, thereby significantly improving the versatility and application range of the reaming drill bit. Whether it is for small precision work or large engineering project needs, such drill bit can provide more flexible and efficient solutions.

[0025] Specifically, the surface of the splicing rod 202 is provided with an extension opening 208, and the splicing pin 207 extends to the outside of the splicing rod 202 through the extension opening 208.

[0026] In the embodiment, the extension opening 208 can limit the movement track of the splicing pin 207, avoid the splicing pin 207 from deviating during movement, and ensure the accurate connection between the sleeve drill bit 3 and the drill bit body 1.

[0027] Specifically, the inside of the splicing rod 202 is movably connected with a locking rack 210 through an electric hydraulic push rod 209, and the surface of the double-section screw rod 204 is fixedly sleeved with a locking tooth ring 211, and the locking tooth ring 211 is engaged with the locking rack 210.

[0028] In the embodiment, the electric hydraulic push rod 209 and the locking rack 210 are arranged in the inside of the splicing rod 202. When the sleeve drill bit 3 and the drill bit body 1 are connected, the operator can start the electric hydraulic push rod 209 to drive the locking rack 210 to move. The locking rack 210 is engaged with the locking tooth ring 211, and the locking rack 210 limits the rotation of the double-section screw rod 204, thereby preventing the sleeve drill bit 3 from accidentally falling off due to external factors, and ensuring the safety and stability during operation.

[0029] Specifically, the outside of the hollow drill bit 301 is provided with a protrusion 302.

[0030] In the embodiment, the protrusion 302 can increase the force of the hollow drill bit 301 on the rock and soil, thereby improving the drilling efficiency.

[0031] In use, when the connection state between the sleeve drill bit 3 and the drill bit body 1 needs to be adjusted, the operator can start the built-in motor 203, and the output shaft of the built-in motor 203 drives the double-section screw rod 204 to rotate. Since the surface of the double-section screw rod 204 is provided with two sections of thread teeth in opposite directions, when the double-section screw rod 204 rotates, the two thread rings 205 will move in opposite directions, causing the two thread rings 205 to gradually move away.

[0032] With the movement of the thread ring 205, the articulated rod 206 will swing, thereby causing the splicing pin 207 to move laterally in the extension opening 208. When the splicing pin 207 completely separates from the splicing groove 304, the sleeve drill bit 3 can be separated from the drill bit body 1, thereby achieving the quick disassembly of the sleeve drill bit 3.

[0033] When the sleeve drill bit 3 needs to be reconnected, it is only necessary to align the sleeve drill bit 3 with the connection pile 201 and the splicing rod 202, and then reverse start the built-in motor 203 again. At this time, the output shaft of the built-in motor 203 will drive the double-section screw rod 204 to rotate in reverse, and the two thread rings 205 will gradually approach under the drive of the double-section screw rod 204, and push the splicing pin 207 to move along the extension opening 208 to the direction of the splicing groove 304 through the articulated rod 206. When the splicing pin 207 completely enters the inside of the splicing groove 304, the connection between the sleeve drill bit 3 and the drill bit body 1 is completed, and at this time the sleeve drill bit 3 and the drill bit body 1 form an integral whole and can perform drilling work.

[0034] In summary, the composite reaming drill bit, by setting the splicing mechanism 2, can promote the connection between the drill bit body 1 and the sleeve drill bit 3 through the connection pile 201, and the built-in motor 203 in the splicing rod 202 can drive the thread ring 205 through the double-section screw rod 204 to drive the articulated rod 206 to move the splicing pin 207 laterally, so that the sleeve drill bit 3 and the drill bit body 1 are connected, which can effectively increase the drilling diameter of the reaming drill bit. Such adjustment makes the drill bit adapt to more types of drilling needs, thereby significantly improving the versatility and application range of the reaming drill bit. Whether it is for small precision work or large engineering projects, this drill bit can provide more flexible and efficient solutions.

[0035] It should be noted that the specific model specifications of the built-in motor 203 and the electric hydraulic push rod 209 in the composite reaming drill bit need to be determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the art, so it will not be described in detail.

[0036] Moreover, the power supply and principle of the built-in motor 203 and the electric hydraulic push rod 209 in the composite reaming drill bit are clear to those skilled in the art, and will not be described in detail here.

[0037] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A combination reamer bit comprising a bit body (1) characterised in that: The top end of the drill bit body (1) is provided with a splicing mechanism (2), and the outer side of the splicing mechanism (2) is movably clamped with a sleeved drill bit (3); The splicing mechanism (2) comprises a connecting pile (201), the top end of the connecting pile (201) is fixedly connected with a splicing rod (202), the inside of the splicing rod (202) is rotatably connected with a double-section screw rod (204) through a built-in motor (203), the surface of the double-section screw rod (204) is threadedly connected with two threaded rings (205), and the outer sides of the two threaded rings (205) are commonly hinged with a splicing pin (207) through a hinged rod (206). The sleeved drill bit (3) comprises a hollow drill bit (301), the inside of the hollow drill bit (301) is provided with an inlaying opening (303), the hollow drill bit (301) is movably sleeved with the connecting pile (201) and the splicing rod (202) through the inlaying opening (303), the inner wall of the inlaying opening (303) is provided with a splicing groove (304), and the splicing pin (207) is located in the inside of the splicing groove (304).

2. The compound reamer according to claim 1, wherein: The surface of the double-section screw rod (204) is provided with two sections of thread teeth in opposite directions, and the movement directions of the two threaded rings (205) are opposite.

3. The compound reamer according to claim 1, wherein: The surface of the splicing rod (202) is provided with an extension opening (208), and the splicing pin (207) extends to the outside of the splicing rod (202) through the extension opening (208).

4. The compound reamer according to claim 1, wherein: The inside of the splicing rod (202) is movably connected with a locking rack (210) through an electric hydraulic push rod (209), the surface of the double-section screw rod (204) is fixedly sleeved with a locking gear ring (211), and the locking gear ring (211) is engaged with the locking rack (210).

5. The compound reamer bit of claim 1, wherein: The outer side of the hollow drill bit (301) is provided with a protruding block (302).

Images