Rotary excavating reamer used on rotary excavating machine

Abstract

The invention relates to a rotary excavating reamer used on a rotary excavating machine, which comprises a whole reamer body, the reamer body consists of an upper working part and a lower connecting part, a plurality of connecting through holes are formed in the connecting part, a working seat is arranged at the top of the working part, a plurality of working heads are mounted on the working seat, and construction operation is performed through the working heads. The thickness of the working seat is larger than that of the connecting part, so that a structure with a thick upper part and a narrow lower part is formed, after the connecting part is inserted into the working area of the rotary drilling machine for installation, the working area of the rotary drilling machine supports the working seat with large thickness to serve as a support of the working seat, and the surfaces of the working seat and the working area of the rotary drilling machine form a whole after the working seat and the working area of the rotary drilling machine are installed. The tooth head has the advantages of being reasonable in structure, convenient to mount and dismount, good in firmness of the whole tooth head structure, ultrahigh in strength, ultrahigh in abrasion resistance and long in service life, and therefore the working efficiency is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of rotary drilling cutters and relates to a rotary drilling cutter used on a rotary drilling machine. Background Art

[0002] The rotary drilling rig is a construction machine suitable for drilling holes in building foundation projects. It is mainly suitable for construction in sandy soil, clay soil, silty soil and other soil layers. It is widely used in various foundation constructions such as cast-in-place piles, continuous walls, foundation reinforcement, etc., and can meet the requirements of various large-scale foundation constructions.

[0003] The rotary reamer of the existing rotary drilling machine is generally a long strip structure, and a carbide tooth tip is installed at the end of the rotary reamer of the long strip structure. However, this structure has the following problems: first, the overall strength of the long strip rotary reamer is insufficient, and the rotary head made of carbide is not wear-resistant after long-term work, and is easily worn and broken, requiring maintenance and replacement, which reduces work efficiency and increases the cost of use. In addition, the existing rotary reamer will vibrate violently during work, which will cause the connection between the rotary reamer and the rotary drilling machine to loosen over a long period of time, affecting work efficiency and bringing certain safety hazards. In addition, during the rotary drilling process, the wastewater or debris generated will adhere to the rotary reamer, which will not only affect the work efficiency but also reduce the service life.

[0004] For this reason, a rotary digging reamer used on a rotary digging machine is designed to overcome the above problems. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a rotary drilling reamer used on a rotary drilling machine which has a reasonable structure, is easy to install and disassemble, has good firmness of the overall tooth head structure, has ultra-high strength and ultra-high wear resistance, has a long service life, greatly improves work efficiency, and ensures assembly accuracy and assembly efficiency.

[0006] The present invention is implemented through the following technical scheme: a rotary drilling reamer used on a rotary drilling machine, which includes a whole reamer body, the body is composed of an upper working part and a lower connecting part, the connecting part is provided with a plurality of connecting through holes, the top of the working part is provided with a working seat, a plurality of working heads are installed on the working seat, construction work is performed by the working heads, the thickness of the working seat is greater than the thickness of the connecting part, so that a structure with a thick top and a narrow bottom is formed, when the connecting part is inserted into the working area of ​​the rotary drilling machine and installed, the working area of ​​the rotary drilling machine supports the thick working seat as a support for the working seat, and the surfaces of the working seat and the working area of ​​the rotary drilling machine form a whole after the installation is completed.

[0007] Preferably: the work seat is located above the connecting part, and a U-shaped boss is arranged at the bottom thereof, and the U-shaped boss is placed on the connecting part to play a limiting role during installation, and a plurality of connecting through holes are opened on the connecting part around the U-shaped boss, and a plurality of recessed notches are arranged on the top of the work seat, and the recessed notches form independent workbenches above the work seat, and a work head is arranged on the workbench, and inclined edges are opened on both sides of the workbench to facilitate waste materials to fall from the notches.

[0008] Preferably, the connecting through hole is located on the side of the connecting part, passes through the entire connecting part, and is composed of a plurality of threaded holes and a plurality of positioning holes, wherein the threaded holes are located around the U-shaped boss, and the aperture of the threaded holes is larger than the aperture of the positioning holes, the positioning holes are arranged below the relative threaded holes, and the apertures of all the positioning holes are the same or different, and an arc-shaped mounting edge is also provided at the bottom of the connecting part.

[0009] Preferably, a plurality of through holes are formed on the side of the working seat, and carbide cylinders are embedded in the through holes. After the carbide cylinders are embedded in the through holes, part of the cylinder heads are exposed.

[0010] Preferably, the working head on the workbench is cylindrical and lies on its side on the workbench, and its cylindrical tooth tip is a PCD tooth tip, and a cemented carbide layer is welded on the cylindrical ridge behind the tooth tip, and the cemented carbide layer includes a granular cemented carbide layer or a powdered cemented carbide layer.

[0011] Preferably, the table top of the workbench is inclined, and the inclined workbench makes the PCD tooth tips of the upper working head present at different angles, thereby expanding the entire rotary drilling range.

[0012] The beneficial effects of the present invention are as follows: The working head of the present invention adopts ultra-high strength and ultra-high wear-resistant cylindrical PCD tooth tips to replace traditional cemented carbide tooth tips. The cylindrical tooth tips adopt high-strength and high-wear-resistant powdered cemented carbide or crushed alloy surfacing technology to form a surfacing layer. At the same time, high-strength and high-wear-resistant cemented carbide cylinders are inlaid in an orderly manner on the side of the working seat, which enhances the strength and wear resistance of the surface, jointly protects the tooth head and the body, and greatly improves the product life and work efficiency. The bottom of the rotary reamer body adopts a U-shaped boss, an arc-shaped mounting edge and two positioning holes to limit the position, and is fixed by three bolt holes, so that the overall installation is more stable and easy to install and disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the first structure of the present invention.

[0014] Figure 2 This is a schematic diagram of the second structure of the present invention.

[0015] Figure 3 for Figure 1 Side view of.

[0016] Figure 4 for Figure 1 Top view of the .

[0017] Figure 5 for Figure 2 Side view of.

[0018] Figure 6 for Figure 2 Top view of the . DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to more clearly understand the objectives, technical solutions and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] In the description of the present invention, it is necessary to understand that the orientation or position relationship indicated by the terms such as "up", "down", "left", "right", "inside", "outside", "horizontal" and "vertical" is based on the orientation or position relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or original referred to must have a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] The present invention will be described in detail below with reference to the accompanying drawings: Figure 1 As shown, a rotary drilling reamer used on a rotary drilling machine comprises a whole reamer body 1, wherein the body 1 is composed of an upper working portion 2 and a lower connecting portion 3, wherein the connecting portion 3 is provided with a plurality of connecting through holes 4, and a working seat 5 is provided on the top of the working portion 2, wherein a plurality of working heads 6 are mounted on the working seat 5, and construction work is performed through the working heads 6, wherein the thickness of the working seat 5 is greater than the thickness of the connecting portion 3, so as to form a structure which is thick at the top and narrow at the bottom, and when the connecting portion 3 is inserted into the working area of ​​the rotary drilling machine and installed, the working area of ​​the rotary drilling machine bears against the thick working seat 5 as a support for the working seat 5, and the surfaces of the working seat 5 and the working area of ​​the rotary drilling machine form a whole after the installation is completed.

[0022] like Figure 3-6As shown, the working seat 5 is located above the connecting portion 3, and a U-shaped boss 7 is arranged at the bottom thereof. The U-shaped boss 7 is placed on the connecting portion 3 to play a limiting role during installation. A plurality of connecting through holes 4 are provided on the connecting portion 3 around the U-shaped boss 7. A plurality of recessed notches 8 are provided on the top of the working seat 5. The recessed notches 8 form independent working tables 9 above the working seat 5, and a working head 6 is arranged on the working table 9. Inclined edges 10 are provided on both sides of the working table 9 to facilitate waste materials to fall from the notches 8, which can effectively prevent waste materials from sticking to the rotary reamer (affecting the work for a long time and corroding the rotary reamer), thereby ensuring the normal operation of the rotary reamer and improving the overall service life to a certain extent.

[0023] The present invention can also improve the overall work efficiency by setting up independent workbenches and arranging a work head on each workbench. When the work head is damaged, it only needs to be replaced individually, which greatly reduces the subsequent maintenance cost and facilitates replacement, and also improves the work efficiency to a certain extent.

[0024] The connecting through hole 4 is located on the side of the connecting part 3, passes through the entire connecting part 3, and is composed of a plurality of threaded holes 11 and a plurality of positioning holes 12, wherein the threaded holes 11 are located around the U-shaped boss 7, and the aperture of the threaded holes 11 is larger than the aperture of the positioning holes 12, the positioning holes 12 are arranged below the threaded holes 11, and the apertures of all the positioning holes 12 are the same or different, and an arc-shaped mounting edge 13 is also provided at the bottom of the connecting part.

[0025] The multiple threaded holes in the present invention ensure that the connection part is installed and fixed as a whole, thereby ensuring that the rotary reamer is stably assembled after installation and will not be displaced due to vibration.

[0026] When the apertures of the positioning holes in the present invention are set to be different from each other, positive and negative positioning can be well performed to prevent the rotary drilling reamer from being assembled in the reverse direction, thereby improving assembly efficiency and preventing equipment loss caused by misoperation.

[0027] The side of the working seat 5 is provided with a plurality of through holes 14 , in which hard alloy cylinders 15 are embedded. After the hard alloy cylinders 15 are embedded in the through holes 14 , part of the cylinder heads are exposed.

[0028] The invention has a plurality of through holes opened on the working seat and a hard alloy cylinder is embedded in each through hole, thereby greatly improving the overall strength and thus improving the overall service life.

[0029] The working head 6 on the workbench 9 is cylindrical and lies on its side on the workbench 9. Its cylindrical tooth tip is a PCD tooth tip, and a cemented carbide layer is welded on the cylindrical ridge behind the tooth tip. Figure 1-2As shown, the cemented carbide layer includes a granular cemented carbide layer 16 or a powdered cemented carbide layer 17 .

[0030] The table top of the workbench 9 is inclined, and the inclined workbench 9 makes the PCD tooth tips of the upper working head 6 present at different angles, so that the entire rotary drilling range is larger.

[0031] The working head of the present invention adopts ultra-high strength and ultra-high wear-resistant cylindrical PCD tooth tips to replace traditional cemented carbide tooth tips. The cylindrical tooth tips adopt high-strength and high-wear-resistant powdered cemented carbide or crushed alloy surfacing technology to form a surfacing layer. At the same time, high-strength and high-wear-resistant cemented carbide cylinders are inlaid in an orderly manner on the side of the working seat, which enhances the strength and wear resistance of the surface, jointly protects the tooth head and the body, and greatly improves the service life and work efficiency of the product. The bottom of the rotary reamer body adopts a U-shaped boss, an arc-shaped mounting edge and two positioning holes to limit the position, and is fixed by three bolt holes, so that the overall installation is more stable and easy to install and disassemble.

[0032] The specific embodiments described herein are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A rotary drilling reamer used on a rotary drilling machine, comprising a whole reamer body, characterized in that: The main body is composed of an upper working part and a lower connecting part, the connecting part is provided with a plurality of connecting through holes, a working seat is provided on the top of the working part, a plurality of working heads are installed on the working seat, and construction work is performed through the working heads. The thickness of the working seat is greater than the thickness of the connecting part, so as to form a structure that is thick at the top and narrow at the bottom. When the connecting part is inserted into the working area of ​​the rotary drilling rig and installed, the working area of ​​the rotary drilling rig supports the thick working seat as a support for the working seat, and the surfaces of the working seat and the working area of ​​the rotary drilling rig form a whole after the installation is completed.

2. The rotary drilling reamer used on the rotary drilling machine according to claim 1, characterized in that: The work seat is located above the connecting part, and a U-shaped boss is arranged at the bottom thereof. The U-shaped boss is placed on the connecting part to play a limiting role during installation. A plurality of connecting through holes are arranged on the connecting part around the U-shaped boss. A plurality of recessed notches are arranged on the top of the work seat. The recessed notches form independent workbenches above the work seat, and a work head is arranged on the workbench. Inclined edges are arranged on both sides of the workbench to facilitate waste materials to fall from the notches.

3. The rotary drilling reamer used on the rotary drilling machine according to claim 2, characterized in that: The connecting through hole is located on the side of the connecting part and runs through the entire connecting part. It is composed of multiple threaded holes and multiple positioning holes, wherein the threaded holes are located around the U-shaped boss, and the aperture of the threaded holes is larger than the aperture of the positioning holes. The positioning holes are arranged below the relative threaded holes, and the apertures of all positioning holes are the same or different. An arc-shaped mounting edge is also provided at the bottom of the connecting part.

4. The rotary drilling reamer used on the rotary drilling machine according to claim 2, characterized in that: A plurality of through holes are provided on the side of the working seat, and hard alloy cylinders are embedded in the through holes. After the hard alloy cylinders are embedded in the through holes, part of the cylinder heads are exposed.

5. The rotary drilling reamer used on the rotary drilling machine according to claim 2, characterized in that: The working head on the workbench is cylindrical and lies on its side on the workbench. Its cylindrical tooth tip is a PCD tooth tip. A cemented carbide layer is welded on the cylindrical ridge behind the tooth tip. The cemented carbide layer includes a granular cemented carbide layer or a powdered cemented carbide layer.

6. The rotary drilling reamer used on the rotary drilling machine according to claim 5, characterized in that: The table top of the workbench is inclined, and the inclined workbench makes the PCD tooth tips of the upper working head present at different angles, thereby making the entire rotary drilling range larger.

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