Drill bit device of rotary drilling rig for cutting cement soil

Abstract

The utility model discloses a drill bit device of a rotary drilling rig for cutting cement soil, and relates to the technical field of mechanical engineering. The drill bit device of the rotary drilling rig for cutting the cement soil comprises a connecting piece; the threaded sleeve is rotationally connected under the connecting piece; one end of the adjusting screw rod is positioned in the threaded sleeve, and the adjusting screw rod is in threaded connection with the threaded sleeve; the ball head is stably connected to the position under the adjusting screw rod, and an adjusting groove is formed in the ball head; the multiple cutting pieces are evenly distributed on the periphery of the ball head, and one end of each cutting piece is stably connected with the connecting piece; and one end of each tool bit is rotationally connected with the other end of the cutting part. According to the drill bit device of the rotary drilling rig for cutting the cemented soil, the angle of the tool bit can be adjusted according to the cemented soil with different hardness, and meanwhile, due to the arrangement of structures such as fasteners and bolts, shaking and rotation possibly generated in the working process of the drill bit device can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical engineering, and in particular to a drill bit device of a rotary drilling rig for cutting cement soil. Background Art

[0002] In modern building and foundation engineering construction, the treatment of cement soil is a common and critical task. As a soil material solidified by cement, cement soil has high strength and stability and is widely used in engineering fields such as foundation reinforcement and underground continuous wall; rotary drilling rigs, as an efficient drilling equipment, play an important role in foundation construction.

[0003] The drill bit in the prior art usually has a fixed structure and non-adjustable cutting parts. When cutting cement soil of different hardness, the drill bit often needs to be replaced and then the cement soil is cut. This frequent replacement of the drill bit is not only cumbersome and time-consuming, but also greatly increases the construction cost. Moreover, in the process of replacing the drill bit, improper installation may occur, affecting the subsequent cutting effect and construction quality. In addition, due to the differences in performance and specifications of different drill bits, frequent replacement may also affect the stability and continuity of the construction, making it difficult to ensure the efficiency and accuracy of the drilling work. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a drill bit device for a rotary drilling rig for cutting cement soil, which solves the technical problems that the drill bit needs to be replaced when cutting cement soil of different hardness and the adjusting screw and the threaded sleeve are prone to rotation when the drill bit is cutting cement soil.

[0005] Technical solution: To achieve the above purpose, the utility model is implemented by the following technical solution: a rotary drilling rig drill bit device for cutting cement soil, comprising: a connecting piece; a threaded sleeve, rotatably connected to the lower part of the connecting piece; an adjusting screw, one end of which is located in the threaded sleeve, and the adjusting screw is threadedly connected to the threaded sleeve; a ball head, firmly connected to the lower part of the adjusting screw, and an adjusting groove is provided on the ball head; a plurality of cutting pieces, and the cutting pieces are evenly distributed on the periphery of the ball head, and one end of the cutting piece is firmly connected to the connecting piece; a plurality of cutter heads, one end of which is connected to the cutting piece The other end is rotatably connected, and a sliding part is provided on the cutter head, one end of the sliding part is firmly connected to the cutter head, and the other end is in the adjusting groove, and the sliding part is adapted to the adjusting groove. The sliding part is slidably connected to the adjusting groove, and the vertical center lines of the connecting part, threaded sleeve, adjusting screw and ball head coincide. The shape and size of the connecting part should be precisely designed according to the specifications and working requirements of the entire drill bit device, and its surface needs to be specially treated to improve wear resistance and corrosion resistance. The thread accuracy of the threaded sleeve should be high to ensure close fit and precise adjustment with the adjusting screw. Its material should have good strength and toughness, and the smoothness of the inner wall must also meet the requirements. The thread pitch and length of the adjusting screw should be designed according to the required adjustment range and accuracy. The thread on its surface needs to be strengthened to prevent wear and deformation. The material of the ball head needs to have high hardness and wear resistance. The shape and size of the adjustment groove must perfectly match the sliding part, and the edge needs to be chamfered to reduce stress concentration. A cutting structure for cutting cement soil can also be set under the ball head. The number and distribution angle of the cutting parts should be optimized according to actual cutting needs. The material should be made of high-strength, high-wear-resistant alloy material, and the surface needs to be coated to enhance the cutting performance. The fitting clearance between the sliding part and the adjustment groove must be strictly controlled to ensure smooth sliding and accuracy. A cutting structure can also be added to the outside of the cutter head to enhance its cutting ability.

[0006] In a further embodiment, the cutting blade is located on the side of the cutting piece away from the ball head, and one end of the cutting blade is firmly connected to the cutting piece, and is used to cut cement soil. The cutting edge of the cutting blade must undergo special grinding and heat treatment processes to improve hardness and sharpness, and its shape and cutting edge angle can be set according to actual needs.

[0007] In a further embodiment, a bolt is rotatably connected in a threaded sleeve; a fastener is in the threaded sleeve, and the fastener is slidably connected to the threaded sleeve; wherein one end of the bolt is in the fastener, and the bolt is threadedly connected to the fastener, wherein the material and strength of the bolt and the fastener must meet the working requirements, and the accuracy of the thread and the fitting tolerance must be strictly controlled to ensure the reliability of the connection and the accuracy of the adjustment.

[0008] In a further embodiment, the limit member is located in the threaded sleeve and is firmly connected to the bolt to prevent the bolt from detaching from the threaded sleeve, wherein the installation position and fixing method of the limit member must be accurate and reliable, and its material must have good strength and fatigue resistance.

[0009] In a further embodiment, a limiting device is provided on the fastener to prevent the fastener from rotating, wherein the structure and size of the limiting device are designed according to the shape and working conditions of the fastener, and the connection with the fastener is firm and does not hinder the sliding of the fastener.

[0010] In a further embodiment, one end of the fastener away from the bolt is in contact with the adjusting screw, and the end of the fastener away from the bolt is provided with a thread, and the thread on the end of the fastener away from the bolt is adapted to the thread on the adjusting screw, wherein the parameters and precision of the thread must match the thread of the adjusting screw, and the contact surface must be properly treated to improve the friction coefficient and wear resistance.

[0011] In a further embodiment, a limiting structure is provided on the sliding member to prevent the sliding member from escaping from the adjusting groove, wherein the shape of the limiting structure needs to be selected according to actual conditions and must ensure that it can function effectively under various working conditions.

[0012] In a further embodiment, the cutting member and the cutter head are connected via a central shaft, and the cutter head rotates around the axis of the central shaft, wherein the material and diameter of the central shaft are selected based on the cutting force and the weight of the cutter head, and the connection between the cutting member and the cutter head is reinforced to ensure connection strength and rotation accuracy.

[0013] Beneficial effects: 1. Through the cooperation between the above structures, the angle of the cutter head can be adjusted so that it can cut cement soil of different hardness. The flexible change of the cutter head angle is achieved through the linkage between the ball head and the adjustment groove, and the sliding of the sliding part in the adjustment groove; when encountering harder cement soil, the cutter head can be opened to a larger angle to enhance the cutting force and crushing ability, so as to smoothly cut the hard stratum; and when facing softer cement soil, the cutter head can be appropriately retracted to complete the cutting operation more efficiently.

[0014] 2. Through the mutual cooperation between the above structures, the problem of easy rotation of the adjusting screw and the threaded sleeve is effectively solved; by arranging bolts, fasteners and limiters in the threaded sleeve, a stable anti-rotation system is constructed; the threaded connection between the bolts and the fasteners provides a stable support and restriction for the adjusting screw, reducing the shaking and rotation that may occur during the working process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 for Figure 1 Schematic diagram of the main cross-section structure.

[0018] Figure 3 for Figure 1 Schematic diagram of the side section structure.

[0019] Figure 4 for Figure 3 Schematic diagram of the structure at A.

[0020] The reference numerals in the figure are: 1, connecting part; 2, cutting part; 201, cutting knife; 3, cutter head; 4, adjusting screw; 401, ball head; 5, threaded sleeve; 6, bolt; 601, limit part; 7, fastener. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the practical embodiment clearer, the technical solution in the practical embodiment is clearly and completely described. Obviously, the described embodiment is a part of the practical embodiment, not all of the embodiments. Based on the embodiments in this practical, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this practical.

[0022] The embodiment of the present application provides a rotary drilling rig drill bit device for cutting cement soil, which solves the technical problem that the drill bit needs to be replaced to cut cement soil of different hardness, and the threaded sleeve is easy to rotate during cutting. In actual use, the angle of the cutting head is adjusted to adapt to cement soil of different hardness, and the stability of the connection between the threaded sleeve and the adjusting screw is enhanced.

[0023] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] Reference Figure 1-4, a rotary drilling rig drill bit device for cutting cement soil, comprising: a connecting member 1; a threaded sleeve 5, rotatably connected to the connecting member 1 directly below; an adjusting screw 4, one end of which is located in the threaded sleeve 5, and the adjusting screw 4 is threadedly connected to the threaded sleeve 5; a ball head 401, firmly connected to the adjusting screw 4 directly below, and an adjusting groove is provided on the ball head 401; a cutting member 2, a plurality of which are provided, and the cutting members 2 are evenly distributed on the periphery of the ball head 401, and one end of the cutting member 2 is firmly connected to the connecting member 1; a cutter head 3, a plurality of which are provided, one end of the cutter head 3 is rotatably connected to the other end of the cutting member 2, a sliding member is provided on the cutter head 3, one end of the sliding member is firmly connected to the cutter head 3, and the other end is in the adjusting groove, and the sliding member is adapted to the adjusting groove, the sliding member is slidably connected to the adjusting groove, and the vertical center lines of the connecting member 1, the threaded sleeve 5, the adjusting screw 4 and the ball head 401 coincide.

[0025] Through the cooperation between the above structures, the angle of the cutter head 3 can be adjusted to adapt to cutting cement soils of different hardness.

[0026] The cutting blade 201 is located on the side of the cutting member 2 away from the ball head 401, and one end of the cutting blade 201 is firmly connected to the cutting member 2 for cutting cement soil.

[0027] The cutting blade 201 is in direct contact with the cement soil, thereby achieving cutting of the cement soil.

[0028] The bolt 6 is rotatably connected in the threaded sleeve 5; the fastener 7 is in the threaded sleeve 5, and the fastener 7 is slidably connected to the threaded sleeve 5; wherein one end of the bolt 6 is in the fastener 7, and the bolt 6 is threadedly connected to the fastener 7.

[0029] The combined structure of the bolt 6, the fastener 7 and the threaded sleeve 5 is used to enhance the connection stability between the threaded sleeve 5 and the adjusting screw 4 to prevent loosening and rotation.

[0030] The limiting member 601 is located in the threaded sleeve 5 , and the limiting member 601 is firmly connected to the bolt 6 to prevent the bolt 6 from being separated from the threaded sleeve 5 .

[0031] The stopper 601 can play a role of safety protection, preventing the bolt 6 from accidentally falling out, and ensuring the normal operation of the entire device.

[0032] The fastener 7 is provided with a limiting device to prevent the fastener 7 from rotating.

[0033] The limiting device ensures that the fastener 7 remains stable during operation and does not rotate unnecessarily, thereby ensuring effective support and fixation of the adjusting screw 4 .

[0034] One end of the fastener 7 away from the bolt 6 contacts the adjusting screw 4 , and one end of the fastener 7 away from the bolt 6 is provided with threads, and the threads on the end of the fastener 7 away from the bolt 6 match the threads on the adjusting screw 4 .

[0035] The thread-matching contact mode increases the friction force and connection stability between the adjusting screw 4 and the fastener 7, thereby preventing loosening.

[0036] A limiting structure is provided on the sliding member to prevent the sliding member from escaping from the adjusting groove.

[0037] The limiting structure ensures the normal movement of the sliding member in the adjustment groove, and prevents the sliding member from slipping out and causing the adjustment failure of the cutter head 3.

[0038] The cutting piece 2 and the cutter head 3 are connected via a central shaft, and the cutter head 3 rotates around the axis of the central shaft.

[0039] The central axis connection mode enables the cutter head 3 to stably rotate around the axis to achieve flexible changes in angle.

[0040] During use, before use, the operator needs to make a preliminary judgment on the hardness and structure of the cement soil based on the geological survey report of the construction site; when starting construction, the drill bit device of the rotary drilling rig is installed on the drill rod of the rotary drilling rig; the rotary drilling rig is started, and the drill bit starts to rotate and drills downward into the cement soil; when encountering softer cement soil, the cutter head 3 can perform cutting operations in the initial state, and the cutting tool 201 directly contacts the cement soil to complete the cutting; and when encountering harder cement soil, the operator rotates the threaded sleeve 5 through manual operation; the rotation of the threaded sleeve 5 causes the adjusting screw 4 threadedly connected thereto to move up and down; when the adjusting screw 4 moves downward, it drives the ball head 401 downward; the ball head 401 moves downward through the cooperation of the adjusting groove and the sliding member, pushing the sliding member to move outward, so that the cutter head 3 moves in the middle The spindle is rotated outward and opened along the axis to increase the cutting angle and force to adapt to the cutting of hard formations; during the drilling process, the combined structure of the bolt 6, fastener 7 and threaded sleeve 5 always remains stable to prevent loosening and accidental rotation between the adjusting screw 4 and the threaded sleeve 5; the limit device on the fastener 7 ensures that the fastener 7 itself does not rotate, and the limit member 601 ensures that the bolt 6 will not separate from the threaded sleeve 5, further ensuring the stability and reliability of the structure; the limit structure on the sliding part always prevents the sliding part from separating from the adjustment groove to ensure the effective adjustment of the cutter head 3; when drilling of an area is completed, if the angle of the cutter head 3 needs to be changed, the above-mentioned adjustment operation can be performed again; after the construction is completed, the drill bit device of the rotary drilling rig is removed from the drill rod for maintenance and storage for next use.

[0041] The drill rod, control device, power supply device and detection device required above all belong to the prior art and are non-essential technical features in this application, so they are not described or drawn in the documents and drawings of this application.

[0042] In summary, compared with the prior art, the invention has the following beneficial effects: the construction efficiency is significantly improved, and there is no need to frequently replace the drill bit to adapt to cement soil of different hardness, which not only saves the time and labor cost of replacing the drill bit, but also reduces the construction pauses caused by geological changes. At the same time, the cutter head angle is adjustable, which can quickly respond to different geological conditions; at the same time, the cutting ability is enhanced, and the cutter head angle and cutting force can be flexibly adjusted according to the hardness of the cement soil, which can more effectively crush and cut cement soil of various hardnesses. Compared with the drill bit with a fixed structure, it has stronger adaptability to complex geological conditions and better cutting effect; it also reduces costs and reduces the demand for reserves of drill bits of different specifications, thereby reducing the cost of purchasing drill bits, and since the frequency of replacing drill bits is reduced, the cost of equipment maintenance and repair is also reduced; it can prevent the threaded sleeve from rotating; and through a series of structural designs, such as the cooperation of bolts, fasteners, limiters, etc., the rotation of the threaded sleeve is effectively limited, the accuracy and stability of the cutter head adjustment are guaranteed, and the accuracy and efficiency of the cutting operation are further improved.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A rotary drilling rig drill bit device for cutting cement soil, characterized in that: include: Connector (1); A threaded sleeve (5) is rotatably connected to the lower portion of the connecting member (1); An adjusting screw (4), one end of which is located in the threaded sleeve (5), and the adjusting screw (4) is threadedly connected to the threaded sleeve (5); The ball head (401) is firmly connected to the lower part of the adjusting screw (4), and an adjusting slot is formed on the ball head (401); There are multiple cutting pieces (2), and the cutting pieces (2) are evenly distributed around the periphery of the ball head (401), and one end of the cutting piece (2) is firmly connected to the connecting piece (1); A cutter head (3) is provided with a plurality of them, one end of the cutter head (3) is rotatably connected to the other end of the cutting member (2), a sliding member is provided on the cutter head (3), one end of the sliding member is firmly connected to the cutter head (3), and the other end is in an adjustment groove, and the sliding member is adapted to the adjustment groove, the sliding member is slidably connected to the adjustment groove, and the vertical center lines of the connecting member (1), the threaded sleeve (5), the adjustment screw (4) and the ball head (401) coincide.

2. A rotary drilling rig drill bit device for cutting cement soil according to claim 1, characterized in that: Also includes: The cutting blade (201) is located on the side of the cutting piece (2) away from the ball head (401), and one end of the cutting blade (201) is firmly connected to the cutting piece (2) for cutting cement soil.

3. The rotary drilling rig drill bit device for cutting cement soil according to claim 1, characterized in that: Also includes: A bolt (6) is rotatably connected in the threaded sleeve (5); A fastener (7) is located in the threaded sleeve (5), and the fastener (7) is slidably connected to the threaded sleeve (5); One end of the bolt (6) is located in the fastener (7), and the bolt (6) is threadedly connected to the fastener (7).

4. A rotary drilling rig drill bit device for cutting cement soil according to claim 3, characterized in that: Also includes: The limiting member (601) is located in the threaded sleeve (5), and the limiting member (601) is firmly connected to the bolt (6) to prevent the bolt (6) from being separated from the threaded sleeve (5).

5. The drill bit device of a rotary drilling rig for cutting cement soil according to claim 3, characterized in that: The fastener (7) is provided with a limiting device for preventing the fastener (7) from rotating.

6. The drill bit device of a rotary drilling rig for cutting cement soil according to claim 3, characterized in that: The end of the fastener (7) away from the bolt (6) contacts the adjusting screw (4), and the end of the fastener (7) away from the bolt (6) is provided with a thread, and the thread on the end of the fastener (7) away from the bolt (6) is matched with the thread on the adjusting screw (4).

7. The drill bit device of a rotary drilling rig for cutting cement soil according to claim 1, characterized in that: The sliding member is provided with a limiting structure for preventing the sliding member from falling out of the adjusting slot.

8. The rotary drilling rig drill bit device for cutting cement soil according to claim 1, characterized in that: The cutting piece (2) and the cutter head (3) are connected via a central shaft, and the cutter head (3) rotates around the axis of the central shaft.

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