A rotary excavating reamer with welded teeth

Abstract

The utility model discloses a rotary excavating reamer with welded teeth, including rotary excavating reamer body, the rotary excavating reamer body is composed of mounting base and working head, is provided with assembly recess in the position of one end of mounting base near top, the working head that is matched with assembly recess is inlayed and welded in assembly recess, this working head partly exposes in assembly recess, is used to facilitate the rotary excavating operation, is provided with at least one assembly through -hole on the side of mounting base, and the hard alloy strip that is same with assembly through -hole shape is inlayed and installed in each assembly through -hole, is used for improving the strength and wear resistance of mounting base side, the mounting base is inlayed and installed on rotary excavating machine, realizes the connecting installation between rotary excavating reamer body and rotary excavating machine. The utility model has many advantages such as reasonable structure, assembly stable, good firmness, convenient installation and disassembly, high hardness and high wear resistance, greatly improve work efficiency and service life etc.

Description

Technical Field

[0001] This utility model belongs to the technical field of rotary drilling machine accessories, and relates to a rotary drilling cutter with welded teeth. Background Technology

[0002] Rotary drilling rigs are construction machines suitable for hole-forming operations in building foundation engineering. They are mainly suitable for construction in soil layers such as sand, cohesive soil, and silty soil, and are widely used in various foundation constructions such as cast-in-place piles, continuous walls, and foundation reinforcement, meeting the requirements of various large-scale foundation constructions. Existing rotary drilling rigs generally have a long, strip-shaped cutter head with carbide teeth at the end. However, this structure has the following problems: firstly, the overall strength of the long, strip-shaped cutter head is insufficient, and the carbide-made head is not wear-resistant after prolonged use, easily wearing down and breaking, requiring maintenance and replacement, reducing work efficiency and increasing operating costs. Secondly, the side surface lacks protective devices, making it prone to wear and deformation over long periods of operation. Furthermore, the existing rotary drilling rigs experience severe vibrations during operation, which can lead to loosening of the connection between the cutter head and the drilling rig over time, affecting work efficiency and posing certain safety hazards. Therefore, a rotary drilling rig with welded teeth is designed to overcome the above problems. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a rotary reamer with welded teeth that has a reasonable structure, stable assembly, good firmness, convenient installation and disassembly, high hardness and high wear resistance, and greatly improves working efficiency and service life.

[0004] This utility model is achieved through the following technical solution: a rotary reamer with welded teeth, comprising a rotary reamer body, the rotary reamer body being composed of a mounting base and a working head, wherein an assembly groove is provided at one end of the mounting base near the top, and a working head matching the assembly groove is embedded and welded into the assembly groove, the working head being partially exposed outside the assembly groove for convenient rotary drilling operations; at least one assembly through hole is provided on the side of the mounting base, and a hard alloy strip of the same shape as the assembly through hole is embedded in each assembly through hole to improve the strength and wear resistance of the side of the mounting base; the mounting base is embedded and installed on a rotary drilling machine to realize the connection and installation between the rotary reamer body and the rotary drilling machine.

[0005] Preferably, the mounting base is a block-shaped body with a fan-shaped structure. The outer arc surface and the inner arc surface of the block-shaped body are the first assembly surface and the second assembly surface, respectively. A working head is welded to the top of the block-shaped body between the first assembly surface and the second assembly surface, and a third assembly surface is provided at the bottom of the block-shaped body. The mounting base is embedded and installed on the rotary drilling machine by the cooperation of the first assembly surface, the second assembly surface and the third assembly surface, and then the rotary drilling operation is performed by the working head.

[0006] Preferably, the first mounting surface protrudes outward at the middle to form a long strip-shaped first positioning post, and oblique limiting mounting surfaces are symmetrically arranged on both sides of the first positioning post. A hard alloy layer is welded to the outer surface of the first positioning post near the working head, and a concave limiting groove is provided on the block body between the first positioning post and the working head. The limiting groove and the first positioning post cooperate to facilitate the assembly of the mounting base and ensure that the rotary drilling rig is firmly fixed to the outer side of the mounting base.

[0007] Preferably, the middle part of the second assembly surface protrudes outward to form a long strip-shaped second positioning post. On both sides of the second positioning post, oblique slope surfaces are symmetrically arranged on the block body of the fan-shaped structure. The second positioning post and the slope surfaces cooperate to facilitate the assembly of the mounting base and ensure that the rotary drilling rig is firmly fixed to the inner side of the mounting base.

[0008] Preferably, the middle part of the third assembly surface protrudes outward to form a long strip-shaped third positioning post, which is used to facilitate the stable assembly between the bottom surface of the installation base and the rotary drilling rig.

[0009] Preferably, the cemented carbide layer is composed of granular cemented carbide or powdered cemented carbide.

[0010] Preferably, the mounting base has three assembly through holes of the same size and circular structure, which are evenly distributed on the side of the mounting base in a triangular arrangement. A cylindrical hard alloy strip is embedded in each assembly through hole, with both ends of the hard alloy strip partially exposed on both sides of the mounting base, in order to improve the strength and wear resistance of the side of the mounting base.

[0011] Preferably, the working head is a PCD tooth head with an integral cylindrical shape, which is used to improve the overall working efficiency.

[0012] Preferably, multiple evenly distributed granular diamonds are embedded and welded on the side of the PCD tooth away from the mounting base to improve working efficiency.

[0013] The beneficial effects of this utility model are as follows:

[0014] This utility model designs a rotary reamer with welded teeth. Its working head uses ultra-high strength and ultra-wear-resistant cylindrical PCD teeth instead of traditional carbide tips. High-strength and high-wear-resistant granular or powdered carbide is used along the ridge (second assembly surface) of the PCD teeth, forming a weld overlay layer. Three high-strength and high-wear-resistant carbide cylinders are simultaneously and horizontally inserted into both sides of the reamer body, enhancing surface strength and wear resistance to protect the teeth and body, significantly improving product lifespan and work efficiency. This utility model has a reasonable overall structure, good robustness, convenient installation and disassembly, ultra-high strength and ultra-wear resistance, and a long service life, thus greatly improving work efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the first structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the second structure of this utility model.

[0017] Figure 3 for Figure 1 A schematic diagram of direction A.

[0018] Figure 4 for Figure 1 A schematic diagram of direction B.

[0019] Figure 5 for Figure 2 A schematic diagram of direction C.

[0020] Figure 6 for Figure 2 A schematic diagram of direction D. Detailed Implementation

[0021] 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.

[0022] 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.

[0023] The present invention will now be described in detail with reference to the accompanying drawings: Figures 1-2As shown, a rotary reamer with welded teeth includes a rotary reamer body, which consists of a mounting base 1 and a working head 2. A mounting groove 3 is provided at one end of the mounting base 1 near the top. A working head 2, matching the mounting groove 3, is embedded and welded into the mounting groove 3. Part of the working head 2 protrudes from the mounting groove 3 to facilitate rotary drilling operations. At least one mounting through hole 5 is provided on the side of the mounting base 1. A carbide strip 6 of the same shape as the mounting through hole is embedded in each mounting through hole 5 to improve the strength and wear resistance of the side of the mounting base 1. The mounting base 1 is embedded and installed on a rotary drilling rig, realizing the connection and installation between the rotary reamer body and the rotary drilling rig.

[0024] The mounting base 1 is a block body 4 with a fan-shaped structure. The outer arc surface and the inner arc surface of the block body 4 are the first assembly surface 7 and the second assembly surface 8, respectively. A working head 2 is welded to the top of the block body between the first assembly surface 7 and the second assembly surface 8. A third assembly surface 9 is provided at the bottom of the block body 4. The mounting base 1 is embedded and installed on the rotary drilling machine by the cooperation of the first assembly surface 7, the second assembly surface 8 and the third assembly surface 9, and then the rotary drilling operation is performed by the working head 2.

[0025] like Figure 3 or Figure 5 As shown, the middle part of the first mounting surface 7 protrudes outward to form a long strip-shaped first positioning post 10, and oblique limiting mounting surfaces 11 are symmetrically arranged on both sides of the first positioning post 10. A hard alloy layer 16 is welded to the outer surface of the first positioning post 10 near the working head 2, and a concave limiting groove 12 is provided on the block body 4 between the first positioning post 10 and the working head 2. The limiting groove 12 and the first positioning post 10 cooperate to facilitate the assembly of the mounting base 1 and ensure that the rotary drilling rig is firmly fixed to the outer side of the mounting base 1.

[0026] like Figure 4 or Figure 6 As shown, the second mounting surface 8 protrudes outward at its center to form a long strip-shaped second positioning post 13. On both sides of the second positioning post 13, symmetrical inclined slope surfaces 14 are arranged on the block-shaped body 4 of the fan-shaped structure. The cooperation between the second positioning post 13 and the slope surfaces 14 facilitates the assembly of the mounting base 1 and ensures a secure fixation between the rotary drilling rig and the inner surface of the mounting base 1. The third mounting surface 9 protrudes outward at its center to form a long strip-shaped third positioning post 15, which facilitates a stable assembly between the bottom surface of the mounting base 1 and the rotary drilling rig.

[0027] This invention uses high-strength and high-wear-resistant granular or powdered cemented carbide at the second assembly surface after the PCD tooth, forming a weld overlay layer using a welding technique. Simultaneously, three high-strength and high-wear-resistant cemented carbide cylinders are horizontally inserted and embedded in an orderly manner on both sides of the reamer body, enhancing the surface strength and wear resistance to jointly protect the tooth and the body, greatly improving the product's service life and working efficiency.

[0028] The cemented carbide layer 16 is composed of granular cemented carbide or powdered cemented carbide, and the composition can be adjusted according to actual conditions without any limitation. The mounting base 1 has three assembly through holes 5, which are the same size and circular in structure. They are evenly distributed on the side of the mounting base 1 and arranged in a triangular pattern. A cylindrical cemented carbide strip 6 is embedded in each assembly through hole 5. The two ends of the cemented carbide strip 6 are partially exposed on both sides of the mounting base 1 to improve the strength and wear resistance of the side of the mounting base 1.

[0029] This invention features three high-strength, high-wear-resistant carbide cylinders horizontally inserted and embedded on both sides of the reamer body. These cylinders enhance surface strength and wear resistance, jointly protecting the tooth and body, and significantly improving product lifespan and work efficiency.

[0030] The working head 2 is a cylindrical PCD tooth 17, designed to improve overall work efficiency. Multiple evenly distributed granular diamonds 18 are embedded and welded into the side of the PCD tooth 17 away from the mounting base to further enhance work efficiency. This invention uses ultra-high strength and ultra-wear-resistant cylindrical PCD tooth tips instead of traditional carbide tooth tips, significantly improving product lifespan and work efficiency, and reducing the need for welding tooth installation and disassembly.

[0031] The specific embodiments described herein are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A rotary reamer with welded teeth, comprising a rotary reamer body, characterized in that: The rotary reamer body consists of a mounting base (1) and a working head (2). An assembly groove (3) is provided at one end of the mounting base (1) near the top. A working head (2) matching the assembly groove (3) is embedded and welded into the assembly groove (3). The working head (2) is partially exposed outside the assembly groove (3) to facilitate rotary drilling operations. At least one assembly through hole (5) is provided on the side of the mounting base (1). A hard alloy strip (6) with the same shape as the assembly through hole is embedded in each assembly through hole (5) to improve the strength and wear resistance of the side of the mounting base (1). The mounting base (1) is embedded and installed on the rotary drilling machine to realize the connection and installation between the rotary reamer body and the rotary drilling machine.

2. The rotary reamer with welded teeth according to claim 1, characterized in that: The mounting base (1) is a block body (4) with a fan-shaped structure. The outer arc surface and the inner arc surface of the block body (4) are the first assembly surface (7) and the second assembly surface (8), respectively. A working head (2) is welded between the first assembly surface (7) and the second assembly surface (8) at the top of the block body with the fan-shaped structure. A third assembly surface (9) is provided at the bottom of the block body (4). The mounting base (1) is embedded and installed on the rotary drilling machine by the cooperation of the first assembly surface (7), the second assembly surface (8) and the third assembly surface (9), and then the rotary drilling operation is performed by the working head (2).

3. The rotary reamer with welded teeth according to claim 2, characterized in that: The first assembly surface (7) protrudes outward at the middle position to form a long strip first positioning post (10), and oblique limiting mounting surfaces (11) are symmetrically arranged on both sides of the first positioning post (10). A hard alloy layer (16) is welded to the outer surface of the first positioning post (10) near the working head (2), and a concave limiting groove (12) is provided on the block body (4) between the first positioning post (10) and the working head (2). The limiting groove (12) and the first positioning post (10) cooperate to facilitate the assembly of the mounting base (1) and ensure that the rotary drilling machine is firmly fixed to the outer side of the mounting base (1).

4. The rotary reamer with welded teeth according to claim 2, characterized in that: The middle part of the second assembly surface (8) protrudes outward to form a long strip-shaped second positioning post (13). On both sides of the second positioning post (13), oblique slope surfaces (14) are symmetrically arranged on the block body of the fan-shaped structure. The second positioning post (13) and the slope surface (14) cooperate to facilitate the assembly of the mounting base (1) and ensure that the rotary drilling machine is firmly fixed to the inner side of the mounting base (1).

5. The rotary reamer with welded teeth according to claim 2, characterized in that: The middle part of the third assembly surface (9) protrudes outward to form a long strip-shaped third positioning column (15), which is used to facilitate the stable assembly between the bottom surface of the base (1) and the rotary drilling machine.

6. The rotary reamer with welded teeth according to claim 3, characterized in that: The cemented carbide layer (16) is composed of granular cemented carbide or powdered cemented carbide.

7. The rotary reamer with welded teeth according to claim 5, characterized in that: The mounting base (1) has three mounting through holes (5), all of the same size and circular in structure, which are evenly distributed on the side of the mounting base (1) and arranged in a triangular pattern. A cemented carbide strip (6) with a cylindrical structure is embedded in each mounting through hole (5). The two ends of the cemented carbide strip (6) are partially exposed on both sides of the mounting base (1) to improve the strength and wear resistance of the side of the mounting base (1).

8. The rotary reamer with welded teeth according to claim 3 or 7, characterized in that: The working head (2) is a PCD tooth head (17) that is cylindrical in shape, which is used to improve the overall working efficiency.

9. The rotary reamer with welded teeth according to claim 8, characterized in that: The PCD tooth (17) has multiple evenly distributed granular diamonds (18) embedded and welded on the side away from the mounting base to improve working efficiency.

Images