Rotary excavating reamer used on rotary excavating machine

Abstract

The utility model 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 arranged on 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 working efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to rotary excavating reamer technical field relates to the rotary excavating reamer used on rotary excavator. BACKGROUND

[0002] Rotary excavator is a kind of construction machinery suitable for hole forming operation in building foundation engineering. It is mainly suitable for sand soil, cohesive soil, silty soil and other soil construction, and is widely used in various foundation construction such as cast-in-place pile, continuous wall, foundation reinforcement, etc., which can meet the requirements of various large-scale foundation construction.

[0003] The existing rotary excavating reamer of rotary excavator is generally in strip-shaped structure, and hard alloy tooth tip is installed at the end of the strip-shaped structure, but the structure has the following problems: first, the overall strength of the strip-shaped rotary excavating reamer is not enough, and the rotating head made of hard alloy is not wear-resistant after long-time work, which is easy to wear and break, so maintenance and replacement are needed, which reduces work efficiency and increases use cost, and the existing rotary excavating reamer will vibrate violently during work, which will cause the connection between the rotary excavating reamer and the rotary excavator to be loose after long time, affecting work efficiency and causing certain safety hazards, and the waste water or debris generated during rotary excavation will adhere to the rotary excavating reamer, which affects work efficiency and reduces service life.

[0004] Therefore, a rotary excavating reamer used on rotary excavator is designed to overcome the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the deficiencies in the prior art, and provides a rotary excavating reamer used on rotary excavator, which has reasonable structure, is convenient to install and disassemble, has good overall tooth head structure firmness, super-high strength and super-high wear resistance, long service life, greatly improves work efficiency, ensures assembly accuracy and assembly efficiency.

[0006] The utility model is realized through the following technical scheme: a rotary excavating reamer used on rotary excavator, which comprises a whole reamer body, the body is composed of a working part at the top and a connecting part at the bottom, a plurality of connecting through holes are formed in the connecting part, a working seat is formed at the top of the working part, a plurality of working heads are installed on the working seat, and working operation is carried out through the working heads, the thickness of the working seat is greater than that of the connecting part, so that an upper-thick lower-narrow structure is formed, when the connecting part is inserted into the working area of the rotary excavator and installed, the working area of the rotary excavator bears the thick working seat as the support of the working seat, and the surface of the working seat forms a whole after the installation of the working seat and the working area of the rotary excavator is completed.

[0007] As preferred: the working seat is located above the connecting part, the bottom of which is provided with a U-shaped boss, which is arranged on the connecting part and plays a limiting role during installation, a plurality of connecting through holes are arranged around the U-shaped boss on the connecting part, the top of the working seat is provided with a plurality of recessed notches, which form independent workbenches above the working seat, a working head is arranged on the workbench, and inclined edges are arranged on both sides of the workbench to facilitate the falling of waste from the notches.

[0008] As preferred: the connecting through holes are arranged on the connecting part side body and penetrate through the entire connecting part, and are composed of a plurality of threaded holes and a plurality of positioning holes, wherein the threaded holes are arranged around the U-shaped boss, the hole diameter of the threaded holes is larger than that of the positioning holes, the positioning holes are arranged below the threaded holes, and the hole diameters of all the positioning holes are the same or different, and an arc-shaped mounting edge is further arranged on the bottom of the connecting part.

[0009] As preferred: a plurality of through holes are arranged on the side body of the working seat, and a hard alloy cylinder is embedded in the through hole.

[0010] As preferred: the working head on the workbench is in a cylindrical shape and is laid on the workbench, the tooth tip of the cylindrical shape is a PCD tooth tip, a hard alloy layer is welded on the back ridge of the cylindrical shape behind the tooth tip, and the hard alloy layer comprises a granular hard alloy layer or a powder hard alloy layer.

[0011] As preferred: the table top of the workbench is in an inclined shape, the PCD tooth tip of the working head above the inclined workbench is in different angles, and the entire rotary digging range is larger.

[0012] The utility model discloses the beneficial effects are as follows:

[0013] The utility model discloses a working head adopts the cylindrical PCD tooth tip of ultrahigh strength and ultrahigh wear resistance to replace the traditional hard alloy tooth tip, the tooth tip of cylindrical shape adopts the powder hard alloy or the broken alloy surfacing technology of high strength and high wear resistance to form the surfacing layer, and the hard alloy cylinder of high strength and high wear resistance is embedded in order on the side body of working seat, the strength and wear resistance of surface are enhanced, the tooth head and the body are protected together, the product service life and work efficiency are greatly improved, the U-shaped boss, the arc-shaped mounting edge and two positioning holes are used to limit the bottom of rotary digging reamer body, and are fixed through three bolt holes, so that the overall installation is more stable, and the installation and removal are convenient. DRAWINGS

[0014] Figure 1 It is the first kind of structure schematic diagram of the utility model.

[0015] Figure 2 It is the second kind of structure schematic diagram of the utility model.

[0016] Figure 3 for Figure 1 Side view.

[0017] Figure 4 for Figure 1 Top view.

[0018] Figure 5 for Figure 2 Side view.

[0019] Figure 6 for Figure 2 Top view. Detailed Implementation

[0020] To enable those skilled in the art to more clearly understand the purpose, technical solution and advantages of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "horizontal", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] The present invention will now be described in detail with reference to the accompanying drawings: Figure 1 As shown, a rotary drilling auger used on a rotary drilling rig includes a single-piece auger body 1. The body 1 consists of an upper working part 2 and a lower connecting part 3. The connecting part 3 has multiple connecting through holes 4. The top of the working part 2 has a working seat 5, and multiple working heads 6 are installed on the working seat 5. Construction operations are performed through the working heads 6. The thickness of the working seat 5 is greater than the thickness of the connecting part 3, forming a structure that is thicker at the top and narrower at the bottom. When the connecting part 3 is inserted into the working area of ​​the rotary drilling rig, the working area of ​​the rotary drilling rig supports the thicker working seat 5, and the working seat 5 and the working area of ​​the rotary drilling rig form a whole after installation.

[0023] like Figures 3-6As shown, the working seat 5 is located above the connecting part 3, the bottom of which is provided with a U-shaped boss 7 which is placed on the connecting part 3 and plays a limiting role during installation, a plurality of connecting through holes 4 are formed around the U-shaped boss 7 on the connecting part 3, the top of the working seat 5 is provided with a plurality of recessed notches 8, the upper part of the working seat 5 forms an independent workbench 9, a working head 6 is arranged on the workbench 9, and inclined edges 10 are formed on both sides of the workbench 9, which facilitates the falling of waste from the notches 8 and prevents the waste from adhering to the rotary excavating reamer (which affects the working time and corrodes the rotary excavating reamer), thereby ensuring the normal working of the rotary excavating reamer and improving the overall service life to some extent.

[0024] The utility model discloses a independent workbench is arranged, and working head is arranged on every workbench, can also improve the overall work efficiency, and when the working head is damaged, only needs to change alone, greatly reduces the subsequent maintenance cost and facilitates the replacement, also improves work efficiency to some extent.

[0025] The connecting through hole 4 is located on the side of the connecting part 3 and penetrates through the whole 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, the hole diameter of the threaded holes 11 is larger than that of the positioning holes 12, the positioning holes 12 are arranged below the threaded holes 11, and the hole diameters of all the positioning holes 12 are the same or different, and an arc-shaped mounting edge 13 is further formed on the bottom of the connecting part.

[0026] The plurality of threaded holes in the utility model can ensure the installation and fixation of the whole connecting part, ensure the stable assembly of the rotary excavating reamer after installation and prevent displacement due to vibration.

[0027] The hole diameters of the positioning holes are different from each other, which can be well positioned in positive and reverse directions, prevent the rotary excavating reamer from being assembled in reverse direction, thereby improving the assembly efficiency and preventing equipment loss caused by misoperation.

[0028] A plurality of through holes 14 are formed on the side of the working seat 5, and a hard alloy cylinder 15 is embedded in the through hole 14.

[0029] The utility model discloses a plurality of through holes are formed on the working seat, and a hard alloy cylinder is embedded in every through hole, thereby greatly improving the strength of the whole and the service life of the whole.

[0030] The working head 6 on the workbench 9 is in a cylindrical shape and is horizontally arranged on the workbench 9, the tooth tip of the cylindrical shape is a PCD tooth tip, and a hard alloy layer is welded on the back ridge of the cylindrical shape behind the tooth tip. Figures 1-2As shown, the hard alloy layer includes a granular hard alloy layer 16 or a powdered hard alloy layer 17.

[0031] The table top of the workbench 9 is inclined, which makes the PCD tooth tip of the upper work head 6 have different angles, and makes the whole rotary digging range larger.

[0032] The utility model discloses a work head adopts the cylindrical PCD tooth tip of ultrahigh strength and ultrahigh wear resistance to replace the traditional hard alloy tooth tip, and the tooth tip is formed with a surfacing layer by adopting high-strength and high-wear-resistance powdered hard alloy or crushed alloy surfacing technology, and the high-strength and high-wear-resistance hard alloy cylinder is orderly embedded on the side body of the work seat, the strength and wear resistance of the surface are enhanced, the tooth head and the body are protected together, the product service life and work efficiency are greatly improved, the rotary digging reamer body bottom adopts a U-shaped boss, an arc-shaped mounting edge and two positioning holes to limit, and is fixed through three bolt holes, so that the whole is more stable after installation, and the installation and dismounting are convenient.

[0033] The specific embodiments described herein are merely illustrative of the principles of the utility model and its effects, and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A rotary drilling auger used on a rotary drilling rig, comprising a single-piece auger body, characterized in that: The main body consists of an upper working part and a lower connecting part. The connecting part has multiple connecting through holes, and the top of the working part has a working seat with multiple working heads installed on it. Construction operations are carried out through the working heads. The thickness of the working seat is greater than the thickness of the connecting part, forming a structure that is thicker at the top and narrower at the bottom. When the connecting part is inserted into the working area of ​​the rotary drilling rig, the working area of ​​the rotary drilling rig supports the thicker working seat, and the working seat and the working area of ​​the rotary drilling rig form a whole after installation.

2. The rotary drilling auger used on the rotary drilling rig according to claim 1, characterized in that: The workbench is located above the connecting part, and its bottom is provided with a U-shaped boss. The U-shaped boss is placed on the connecting part and serves as a limit during installation. Multiple connecting through holes are opened around the U-shaped boss on the connecting part. Multiple recessed notches are provided on the top of the workbench. These recessed notches form independent worktables on the top of the workbench. Working heads are arranged on the worktables. Inclined edges are opened on both sides of the worktables to facilitate the falling of waste materials from the notches.

3. The rotary drilling auger used on the rotary drilling rig according to claim 2, characterized in that: The connecting through hole is located on the side of the connecting part, runs through the entire connecting part, and consists of multiple threaded holes and multiple positioning holes. The threaded holes are located around the U-shaped boss, and the diameter of the threaded holes is larger than the diameter of the positioning holes. The positioning holes are arranged below the threaded holes, and all the positioning holes have the same or different diameters. The bottom of the connecting part is also provided with an arc-shaped mounting edge.

4. The rotary drilling auger used on a rotary drilling rig according to claim 2, characterized in that: The work base has multiple through holes on its side, and a cemented carbide cylinder is embedded in the through hole. After the cemented carbide cylinder is embedded in the through hole, part of its head is exposed.

5. The rotary drilling auger used on a rotary drilling rig 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, and a cemented carbide layer is welded on the cylindrical back 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 auger used on a rotary drilling rig according to claim 5, characterized in that: The workbench is inclined, which causes the PCD tooth tips of the upper working head to be at different angles, thus increasing the overall rotary drilling range.

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