Drill bit and drill rod assembly with wear-resistant bottom and engineering machinery

Abstract

The utility model discloses a drill bit and drill rod assembly with a wear-resistant bottom and engineering machinery, the drill bit and drill rod assembly with the wear-resistant bottom comprises a drill bit and a drill rod, the drill bit is arranged at one end of the drill rod, the other end of the drill rod is suitable for being connected into the engineering machinery to drive the drill rod to work, and blades are wound on the drill rod. A first wear-resistant structure is arranged on the edge of the structural section, close to the drill bit, of the blade, the drill bit comprises a tooth holder fixing plate and drill teeth, the tooth holder fixing plate is arranged on the drill rod, a second wear-resistant structure is arranged on the edge of the tooth holder fixing plate, a mounting seat is arranged on the tooth holder fixing plate, and the drill teeth are arranged on the mounting seat. The thickness of the bottom blade of the spiral drill rod is increased, the first wear-resistant structure is additionally arranged on the outer edge of the bottom blade, and the second wear-resistant structure is additionally arranged on the outer side face of the tooth holder fixing plate, so that the service life of the drill rod is effectively prolonged, and the drilling efficiency of a drill bit is improved; and the thickness of the blade is increased to reduce abrasion of the blade, so that the replacement frequency is reduced, and the use cost of the drill rod is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling equipment, in particular to a drill bit and drill pipe assembly with wear-resistant bottom. In addition, it also relates to a construction machinery. Background Art

[0002] The working range of the auger drill bit mainly focuses on soil layers and strongly weathered rock layers. During the construction process, if encountering relatively hard strata, such as moderately weathered rock layers, pebble-containing layers or pebble-cemented layers, generally a relatively large drilling torque is required, which puts higher usage requirements on the strength of the drill bit. If the strength of the drill bit is too low, it is easy to cause cracks (even fractures) at the edges of the blades or bend the spiral blades, thus affecting the construction progress.

[0003] Moreover, during the pile driving process of the drill bit, due to different geological conditions, various rock layers are often encountered during pile driving. The drill bit and the blades at the bottom of the drill pipe are in long-term contact with the rock, resulting in wear of the drill bit and the blades on the drill pipe. Furthermore, it is necessary to frequently replace the drill pipe, increasing the cost.

[0004] In view of this, it is necessary to design a drill bit and drill pipe assembly with wear-resistant bottom to solve the above problems. Summary of the Utility Model

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art.

[0006] For this purpose, the utility model provides a drill bit and drill pipe assembly with wear-resistant bottom, which can improve the service life of the drill pipe by increasing the wear-resistant structures at the bottom of the auger drill pipe and the outer edges of the blades.

[0007] According to a drill bit and drill pipe assembly with wear-resistant bottom provided by the first aspect of the utility model, it includes a drill bit and a drill pipe. The drill bit is arranged at one end of the drill pipe, and the other end of the drill pipe is suitable for being connected to a construction machinery to drive the drill pipe to work. Blades are wound around the drill pipe. A first wear-resistant structure is arranged on the structural section of the blade close to the drill bit. The first wear-resistant structure is arranged at the edge of the blade. And the drill bit includes a tooth seat fixing plate and drill teeth. The tooth seat fixing plate is arranged on the drill pipe. A second wear-resistant structure is arranged at the edge of the tooth seat fixing plate. An installation seat is opened on the tooth seat fixing plate, and the drill teeth are arranged on the installation seat.

[0008] Preferably, both the first wear-resistant structure and the second wear-resistant structure are Z-shaped wear-resistant weld seams, and the Z-shaped wear-resistant structure is formed into a serrated shape.

[0009] Further preferably, the thickness of the structural section of the blade close to the drill bit is greater than the thickness of the structural section away from the drill bit.

[0010] Preferably, the mounting seat formed on the tooth seat fixing plate is an inclined cutting surface, and the inclined cutting surface is adapted to be completely attached to the mounting surface of the drill tooth.

[0011] Further preferably, after the inclined cutting surface is completely attached to the mounting surface of the drill tooth, welding is performed.

[0012] Preferably, a plurality of mounting seats are spirally arranged on the circumferential side of the tooth seat fixing plate.

[0013] Further preferably, the drill teeth arranged on the plurality of mounting seats are simultaneously arranged in a clockwise or counterclockwise direction.

[0014] Preferably, the inclined cutting surface formed by the mounting seat on the tooth seat fixing plate is opened on the upper plate surface of the tooth seat fixing plate, and the inclined cutting surface is formed by the upper plate surface of the tooth seat fixing plate extending obliquely towards the lower plate surface of the tooth seat fixing plate.

[0015] Further preferably, a main drill tooth is further provided in the middle of the tooth seat fixing plate, and the main drill tooth is adapted to penetrate the tooth seat fixing plate and be directly connected to the drill pipe.

[0016] In a second aspect of the present invention, a construction machine is provided, which adopts the drill pipe assembly with wear-resistant bottom of the first aspect of the present invention.

[0017] The beneficial effects of the present invention are as follows: by increasing the thickness of the bottom blade of the spiral drill pipe and adding a first wear-resistant structure on the outer edge of the bottom blade, the service life of the drill pipe is effectively improved; by adding a second wear-resistant structure on the outer surface of the tooth seat fixing plate, the service life of the drill pipe is further increased, and the drilling efficiency of the drill bit is improved; and the increase in the blade thickness reduces the wear of the blade, thereby reducing the replacement frequency and saving the use cost of the drill pipe.

[0018] Other features and advantages of the present invention will be described in the following specification, and, in part, will be obvious from the specification, or will be understood by implementing the present invention. The objectives and other advantages of the present invention are achieved and obtained by the structures specifically pointed out in the specification, the claims, and the drawings.

[0019] In order to make the above objectives, features, and advantages of the present invention more obvious and understandable, the following specific preferred embodiments are given, and in conjunction with the accompanying drawings, the detailed description is as follows. Description of the Drawings

[0020] The present invention will be further described below in conjunction with the drawings and embodiments.

[0021] Figure 1 It is a three-dimensional structure diagram of the drill pipe assembly with wear-resistant bottom of the present invention;

[0022] Figure 2 This is an enlarged three-dimensional structure view of the drill bit part of the drill bit drill pipe assembly with wear-resistant bottom of the present utility model;

[0023] Figure 3 This is a structural diagram of the drill teeth of the drill bit drill pipe assembly with wear-resistant bottom of the present utility model;

[0024] Figure 4 This is a top view of the tooth seat fixing plate of the drill bit drill pipe assembly with wear-resistant bottom of the present utility model;

[0025] Figure 5 This is a bottom view of the drill bit of the drill bit drill pipe assembly with wear-resistant bottom of the present utility model.

[0026] Explanation of reference numerals in the drawings:

[0027] 1. Drill pipe; 11. Blade; 111. Bottom blade; 112. Top blade; 113. First wear-resistant structure;

[0028] 2. Drill bit; 21. Tooth seat fixing plate; 211. Second wear-resistant structure; 22. Main drill tooth; 23. Drill tooth; 24. Mounting seat. Detailed implementation manners

[0029] Now, the present utility model will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only showing the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model. In the description of the present utility model, it should be understood that unless otherwise specified, the meaning of "a plurality of" is two or more.

[0030] See Figures 1 to 3 , a drill bit 2 drill pipe 1 assembly with wear-resistant bottom in a specific implementation manner of the present utility model, includes a drill bit 2 and a drill pipe 1. The drill bit 2 is arranged at one end of the drill pipe 1, and the other end of the drill pipe 1 is adapted to be connected to a construction machine to drive the drill pipe 1 to work. In addition, blades 11 are wound around the drill pipe 1, and a first wear-resistant structure 113 is provided on the structural section of the blade 11 close to the drill bit 2, and the first wear-resistant structure 113 is arranged on the edge of the blade 11. The drill bit 2 includes a tooth seat fixing plate 21 and drill teeth 23. The tooth seat fixing plate 21 is arranged on the drill pipe 1, a second wear-resistant structure 211 is provided on the edge of the tooth seat fixing plate 21, a mounting seat 24 is opened on the tooth seat fixing plate 21, and the drill teeth 23 are arranged on the mounting seat 24.

[0031] Specifically, both the first wear-resistant structure 113 arranged on the edge of the blade 11 and the second wear-resistant structure 211 arranged on the edge of the tooth seat fixing plate 21 are Z-shaped wear-resistant welds, and the Z-shaped wear-resistant welds are formed into a serrated shape, so as to improve the acting force of the drill pipe 1 on the surrounding rock blocks during the drilling process of the drill pipe 1, thereby improving the drilling efficiency of the drill pipe 1.

[0032] More specifically, in order to ensure that the blade 11 does not undergo significant deformation during the drilling process and to extend its service life, the structural section of the blade 11 close to the drill bit 2 is the bottom blade 111, and the structural section of the blade 11 away from the drill bit 2 is the top blade 112. The thickness of the bottom blade 111 is set to be greater than that of the top blade 112. Since the structural section of the blade 11 close to the drill bit 2 is the first to be stressed during the drilling process compared to the section away from the drill bit 2, the probability of its deformation is relatively higher. Therefore, setting the thickness of the structural section of the blade 11 close to the drill bit 2 to be thicker can better ensure the stability of the structure of the blade 11 during the drilling process of the drill pipe 1. At the same time, due to the increase in its thickness, it has better wear resistance during the drilling process, improving the wear resistance level.

[0033] In addition, a tooth seat fixing plate 21 is provided on the drill pipe 1. An installation seat 24 is formed on the tooth seat fixing plate 21. The installation seat 24 is an inclined plane, and the drill tooth 23 is arranged on the inclined plane and is completely fitted to the inclined plane, so as to ensure that the drill tooth 23 can be stably installed on the installation seat 24. And in order to ensure the firm connection between the drill tooth 23 and the installation seat 24, after the inclined plane and the installation surface of the drill tooth 23 are completely fitted, a wear-resistant welding rod is used for welding, so as to enhance the wear resistance of the drill tooth 23 and at the same time ensure the stability of the drill tooth 23 installed on the installation seat 24.

[0034] See Figures 4 to 5 , a plurality of installation seats 24 are spirally arranged on the circumferential side of the tooth seat fixing plate 21, and the drill teeth 23 arranged on the plurality of installation seats 24 are all arranged clockwise or all arranged counterclockwise. In addition, the inclined plane formed by the installation seats 24 on the tooth seat fixing plate 21 is formed on the upper plate surface of the tooth seat fixing plate 21, and the inclined plane is formed by the upper plate surface of the tooth seat fixing plate 21 extending obliquely towards the lower plate surface of the tooth seat fixing plate 21.

[0035] See Figure 5 , a main drill tooth 22 is further provided in the middle of the tooth seat fixing plate 21. The main drill tooth 22 is adapted to penetrate through the tooth seat fixing plate 21 and is directly connected to the end of the drill pipe 1. A plurality of drill teeth 23 arranged on the tooth seat fixing plate 21 are arranged around the main drill tooth 22. When working, first, when the main drill tooth 22 contacts the ground, the initial breakthrough of the ground to be drilled is achieved. At this time, due to the action of the main drill tooth 22 on the ground to be drilled, the ground to be drilled and the surrounding rocks rupture. Then, as the drill pipe 1 continuously penetrates deeper, a plurality of drill teeth 23 arranged on the installation seats 24 and the blades 11 arranged on the drill pipe 1 are driven to cut into the ground to be drilled, so as to further expand the drillable area of the ground and facilitate the further penetration of the subsequent drill pipe 1 to complete the drilling operation.

[0036] A construction machinery in a specific embodiment of the present utility model adopts the drill bit 2 and drill pipe 1 assembly with wear-resistant bottom described in any of the above embodiments, and thus has the above advantages.

[0037] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0038] The above is based on the ideal embodiment of the present utility model as an inspiration. Through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined by the scope of the claims.

Claims

1. A drill bit and drill rod assembly with a wear-resistant bottom, characterized in that: The drill bit (2) and a drill rod (1) are provided, wherein the drill bit (2) is arranged at one end of the drill rod (1), and the other end of the drill rod (1) is suitable for being connected to an engineering machine to drive the drill rod (1) to work. A blade (11) is wound around the drill rod (1), and a first wear-resistant structure (113) is provided on a structural section of the blade (11) close to the drill bit (2). The first wear-resistant structure (113) is arranged on the edge of the blade (11). The drill bit (2) comprises a tooth seat fixing plate (21) and a drill tooth (23). The tooth seat fixing plate (21) is arranged on the drill rod (1), and a second wear-resistant structure (211) is provided on the edge of the tooth seat fixing plate (21). A mounting seat (24) is provided on the tooth seat fixing plate (21), and the drill tooth (23) is arranged on the mounting seat (24).

2. The bottom wear-resistant drill bit and drill rod assembly according to claim 1, characterized in that: The first wear-resistant structure (113) and the second wear-resistant structure (211) are both Z-shaped wear-resistant welds, and the Z-shaped wear-resistant structure is formed in a sawtooth-like shape.

3. The bottom wear-resistant drill bit and drill rod assembly according to claim 2, characterized in that: The thickness of the structural section of the blade (11) close to the drill bit (2) is greater than the thickness of the structural section far from the drill bit (2).

4. The bottom wear-resistant drill bit and drill rod assembly according to claim 3, characterized in that: The mounting seat (24) provided on the tooth seat fixing plate (21) is formed as a beveled surface, and the beveled surface is suitable for completely fitting with the mounting surface of the drill tooth (23).

5. The bottom wear-resistant drill bit and drill rod assembly according to claim 4, characterized in that: The chamfered surface is completely fitted to the mounting surface of the drill tooth (23) and then welded.

6. The bottom wear-resistant drill bit and drill rod assembly according to claim 5, characterized in that: A plurality of mounting seats (24) are spirally provided on the circumferential side of the gear seat fixing plate (21).

7. The bottom wear-resistant drill bit and drill rod assembly according to claim 6, characterized in that: The drill teeth (23) arranged on the plurality of mounting seats (24) are arranged in a clockwise or counterclockwise direction at the same time.

8. The bottom wear-resistant drill bit and drill rod assembly according to claim 7, characterized in that: The beveled surface formed by the mounting seat (24) on the gear seat fixing plate (21) is opened on the upper plate surface of the gear seat fixing plate (21), and the beveled surface is formed by obliquely extending the upper plate surface of the gear seat fixing plate (21) toward the lower plate surface of the gear seat fixing plate (21).

9. The bottom wear-resistant drill bit and drill rod assembly according to claim 8, characterized in that: A main drill tooth (22) is also provided in the middle of the tooth seat fixing plate (21), and the main drill tooth (22) is suitable for passing through the tooth seat fixing plate (21) and being directly connected to the drill rod (1).

10. An engineering machine, characterized in that: A bottom wear-resistant drill bit and drill rod assembly according to any one of claims 1 to 9 is used.

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