Assembled reamer bit

Abstract

The utility model relates to the technical field of reamer bits, and discloses an assembled reamer bit which comprises a bit connecting rod, an environment-friendly component and a drilling component, one end of the bit connecting rod is fixedly connected with a guide bit, and the environment-friendly component and the drilling component are arranged on the peripheral wall of the bit connecting rod. The environment-friendly assembly comprises a connecting ring rotationally connected to the position, away from the guide drill bit, of the peripheral wall of the drill bit connecting rod, one end of the connecting ring is in threaded connection with a fixing plate, and one end of the fixing plate is slidably connected with a plurality of evenly-distributed guide rods. The effect of improving the environmental protection performance of the device is achieved, one end of the dustproof cover is kept to abut against the drilling face through mutual cooperation of the guide rod and the spring, scraps generated by reaming are prevented from flying to the external environment, meanwhile, noise generated by reaming is effectively prevented from being spread to the external environment through arrangement of the noise reduction cover, and the service life of the device is prolonged. The health of workers is protected, and the problems that the device lacks a corresponding dustproof noise reduction assembly, and the environmental protection property of the device is difficult to effectively improve are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of reaming drill bits, in particular to an assembled reaming drill bit. Background Art

[0002] A reaming drill bit is used to enlarge an existing hole. Its primary function is to further process an already drilled hole, increasing its diameter, improving accuracy, and reducing surface roughness. Currently, in many large-diameter drilling operations, using a standard large drill bit for a single pass is inefficient, fails to achieve the desired results, and results in significant bit waste. Therefore, a staged reaming process is necessary. However, this requires multiple replacements of drill bits of varying specifications, making it difficult to effectively improve drilling efficiency.

[0003] After searching, the Chinese patent with publication number CN202866658U discloses a mounted reaming drill bit, which includes multiple steel tubes, each of which is processed with internal and external threads on the upper and lower ends respectively, and multiple radial steel ribs are welded around each steel tube, and the tubular drill bit body is welded through the ribs. The multiple steel tubes are connected up and down by threads to form a reaming drill bit with segmented diameters. The diameter of the tubular drill bit body of the reaming drill bit increases successively from the beginning to the end.

[0004] The device can be applied to graded hole expansion for drilling at any depth by replacing tubular drill bit bodies of different diameters. The contact area between the drill bit and the rock is smaller each time the hole is expanded, the resistance is reduced, the drilling efficiency is high, the drill bit body is reusable, and the cost is low.

[0005] However, the device still has the following problems. The device adopts multiple steel pipe bodies for threaded connection, and then fixes the tubular drill body by welding steel ribs to the outer peripheral wall of the steel pipe body. The mutual cooperation between the multiple tubular drill bodies with increasing diameters facilitates the improvement of hole expansion efficiency. However, during the hole expansion process of the device, a large amount of waste chips and long-term noise will be generated, which will affect the health of the workers and cause certain environmental pollution. Because the device lacks corresponding dust and noise reduction components, it is difficult to effectively improve the environmental friendliness of the device. Utility Model Content

[0006] (1) Technical problems solved

[0007] In view of the shortcomings of the existing technology, the utility model provides an assembled reaming drill bit, which solves the problem that the above-mentioned device lacks corresponding dust-proof and noise-reducing components and is difficult to effectively improve the environmental protection of the device.

[0008] (2) Technical solution

[0009] To achieve the above-mentioned object, the present invention provides the following technical solutions: an assembled reaming drill bit, comprising a drill connecting rod, one end of which is fixedly connected to a pilot drill bit, and further comprising an environmental protection component and a drilling component provided on the outer peripheral wall of the drill connecting rod;

[0010] The environmental protection component includes a connecting ring that is rotatably connected to the outer peripheral wall of the drill connecting rod away from the guide drill bit, one end of the connecting ring is threadedly connected to a fixing plate, one end of the fixing plate is slidably connected to a plurality of evenly distributed guide rods, one end of the plurality of guide rods is commonly fixedly connected to a dust cover, the outer peripheral wall of each guide rod is sleeved with a spring, the outer peripheral wall of the dust cover is sleeved with a noise reduction cover, the dust cover and the bottom side of the outer peripheral wall of the noise reduction cover are commonly fixedly connected to a plurality of evenly distributed chip removal pipes, the bottom ends of the plurality of chip removal pipes are commonly fixedly connected to a dust collection box, and the bottom end of the dust collection box is clamped with a cover plate.

[0011] Preferably, the noise reduction cover includes a noise reduction layer 1 arranged on the inner layer, and the outer peripheral wall of the noise reduction layer 1 is fixedly connected to the noise reduction layer 2.

[0012] Preferably, the drilling assembly includes a secondary drill bit threadedly connected to the outer peripheral wall of the drill rod near the guide drill bit, and a tertiary drill bit is threadedly connected to the outer peripheral wall of the drill rod near the secondary drill bit.

[0013] Preferably, the outer peripheral walls of the pilot drill bit, the secondary drill bit and the tertiary drill bit are all fixedly connected with a plurality of evenly distributed drill expansion blades.

[0014] Preferably, the outer diameters of the pilot drill bit, the secondary drill bit and the tertiary drill bit are arranged to increase equidistantly.

[0015] (3) Beneficial effects

[0016] 1. The assembled reaming drill bit keeps one end of the dust cover against the drilling surface through the cooperation between the guide rod and the spring, preventing the waste chips generated by reaming from flying into the external environment. At the same time, the setting of the noise reduction cover effectively prevents the noise generated by reaming from being transmitted to the external environment, effectively improving the environmental friendliness of the device and protecting the health of the workers.

[0017] 2. This assembled reaming drill bit is practical, efficient and cleverly designed. Through the cooperation between the connecting pipe and the dust collecting box, it is easy to discharge the waste chips generated by reaming in the dust cover, avoiding the accumulation of waste chips in the dust cover and affecting the drilling efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from the first perspective;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from a second viewing angle;

[0020] Figure 3 This is a schematic diagram of a half-cutaway three-dimensional structure of some components of the present invention;

[0021] Figure 4 This is a schematic diagram of the cross-sectional three-dimensional structure of some environmental protection components of the present invention.

[0022] In the figure: 1. Drill connecting rod; 2. Guide drill bit; 3. Drill bit blade expansion; 4. Second-stage drill bit; 5. Third-stage drill bit; 6. Connecting ring; 7. Fixing plate; 8. Guide rod; 9. Dust cover; 10. Spring; 11. Noise reduction cover; 1101. Noise reduction layer one; 1102. Noise reduction layer two; 12. Chip removal pipe; 13. Dust collection box; 14. Cover plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example: Figure 1 As shown, an assembled reaming drill bit includes a drill connecting rod 1, one end of which is fixedly connected to a guide drill bit 2 by welding, wherein the drill connecting rod 1 and the guide drill bit 2 are both made of composite steel to improve the overall structural strength of the device, and also include an environmental protection component and a drilling component arranged on the outer peripheral wall of the drill connecting rod 1.

[0025] like Figure 2-Figure 4As shown, in a certain embodiment, in order to improve the environmental protection of the device, the environmental protection component includes a connecting ring 6 that is rotatably connected to the outer peripheral wall of the drill connecting rod 1 away from the guide drill bit 2 through a bearing, and one end of the connecting ring 6 is threadedly connected to a fixing plate 7, wherein the connecting ring 6 plays a role in preventing the drill connecting rod 1 from driving the fixing plate 7 to rotate, and one end of the fixing plate 7 is slidably connected to a plurality of evenly distributed guide rods 8, and one end of the plurality of guide rods 8 is fixedly connected to a dust cover 9, wherein the guide rod 8 plays a role in limiting the movement direction of the dust cover 9, and the outer peripheral wall of each guide rod 8 is sleeved with a spring 10, and the dust cover 9 is kept against the drilling surface through the mutual cooperation between the spring 10 and the guide rod 8, and the outer peripheral wall of the dust cover 9 is sleeved with a noise reduction cover 11, and the noise reduction cover 11 includes a noise reduction layer 1101 arranged on the inner layer, wherein the noise reduction layer 1101 is made of rock wool material, has good sound insulation and high temperature resistance effects, and effectively avoids the installation The noise generated by drilling is transmitted to the outside of the noise reduction cover 11, and the outer peripheral wall of the noise reduction layer 1101 is fixedly connected to the noise reduction layer 2 1102, wherein the noise reduction layer 2 1102 is made of polyurethane foam material, which has good sound insulation effect and is relatively lightweight, further improving the noise reduction effect of the device, while reducing the weight of the device and facilitating use. The dust cover 9 and the bottom side of the outer peripheral wall of the noise reduction cover 11 are fixedly connected to a plurality of evenly distributed chip discharge pipes 12. The chip discharge pipes 12 are arranged to facilitate the discharge of the chips generated by the drilling of the device, so as to avoid the accumulation of chips affecting the rotation of each drill bit. The bottom ends of the plurality of chip discharge pipes 12 are fixedly connected to a dust collection box 13. The dust collection box 13 is arranged to facilitate the collection of the chips generated by the drilling of the device, so as to avoid the chips flying into the external environment, thereby effectively improving the environmental protection of the device. The bottom end of the dust collection box 13 is clamped with a cover plate 14, wherein the cover plate 14 serves to facilitate the discharge of the chips collected in the dust collection box 13.

[0026] like Figure 1 and Figure 3 As shown, in a certain embodiment, in order to improve the hole expansion efficiency of the device, the drilling assembly includes a secondary drill bit 4 threadedly connected to the outer peripheral wall of the drill bit connecting rod 1 near the guide drill bit 2, and the outer peripheral wall of the drill bit connecting rod 1 is threadedly connected to a tertiary drill bit 5 near the secondary drill bit 4. The outer peripheral walls of the guide drill bit 2, the secondary drill bit 4 and the tertiary drill bit 5 are fixedly connected with a plurality of evenly distributed drill expansion blades 3. The outer diameters of the guide drill bit 2, the secondary drill bit 4 and the tertiary drill bit 5 are arranged to increase equidistantly. Through the mutual cooperation between the guide drill bit 2, the secondary drill bit 4 and the tertiary drill bit 5, it is convenient to quickly drill the hole diameter required by the design without the need to replace the drill bit multiple times, thereby effectively improving the hole expansion efficiency of the device.

[0027] Working principle: When in use, the drill connecting rod 1 is connected to the drive system, and then the guide drill bit 2 is placed in the specified position, so that one end of the dust cover 9 is in contact with the drilling surface to prevent the waste chips generated by the hole expansion from flying to the external environment. At the same time, the noise reduction cover 11 is set to effectively prevent the noise generated by the hole expansion from being transmitted to the external environment, effectively improving the environmental protection of the device and protecting the health of the staff. Then, through the mutual cooperation between the guide drill bit 2 and the secondary drill bit 4, the tertiary drill bit 5 and the drill bit expansion blade 3, the aperture is quickly expanded to the design requirement range without the need to replace drill bits of different specifications many times, which effectively improves the hole expansion efficiency. At the same time, through the mutual cooperation between the guide rod 8 and the spring 10, the dust cover 9 is kept in contact with the drilling surface, which improves the stability of the dust and noise reduction of the device. Then, through the mutual cooperation between the connecting pipe 12 and the dust box 13, the waste chips generated by the hole expansion in the dust cover 9 are easily discharged, and the waste chips in the dust cover 9 are prevented from accumulating and affecting the drilling efficiency of the device.

[0028] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An assembled reaming drill bit, comprising a drill connecting rod (1), one end of which is fixedly connected to a guide drill bit (2), characterized in that: It also includes an environmental protection component and a drilling component arranged on the outer peripheral wall of the drill bit connecting rod (1); The environmental protection component comprises a connecting ring (6) rotatably connected to the outer peripheral wall of the drill bit connecting rod (1) away from the guide drill bit (2), one end of the connecting ring (6) is threadedly connected to a fixing plate (7), one end of the fixing plate (7) is slidably connected to a plurality of evenly distributed guide rods (8), one end of the plurality of guide rods (8) is commonly fixedly connected to a dust cover (9), the outer peripheral wall of each guide rod (8) is sleeved with a spring (10), the outer peripheral wall of the dust cover (9) is sleeved with a noise reduction cover (11), and the bottom side of the outer peripheral wall of the dust cover (9) and the noise reduction cover (11) is commonly fixedly connected to a plurality of evenly distributed guide rods (8). The invention relates to a uniformly distributed chip removal pipe (12), wherein the bottom ends of the plurality of chip removal pipes (12) are fixedly connected to a dust collecting box (13), and the bottom end of the dust collecting box (13) is clamped with a cover plate (14); the noise reduction cover (11) comprises a first noise reduction layer (1101) arranged on the inner layer, and the outer peripheral wall of the first noise reduction layer (1101) is fixedly connected to the second noise reduction layer (1102); the drilling assembly comprises a secondary drill bit (4) threadedly connected to the outer peripheral wall of the drill connecting rod (1) near the guide drill bit (2), and the outer peripheral wall of the drill connecting rod (1) is threadedly connected to a third drill bit (5) near the secondary drill bit (4).

2. The assembled reaming drill bit according to claim 1, characterized in that: The outer peripheral walls of the pilot drill bit (2), the secondary drill bit (4) and the tertiary drill bit (5) are all fixedly connected with a plurality of evenly distributed drill bit expansion blades (3).

3. The assembled reaming drill bit according to claim 1, characterized in that: The outer diameters of the pilot drill bit (2), the secondary drill bit (4) and the tertiary drill bit (5) are arranged to increase in equal proportions.

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