Efficient construction drill bit of threaded pile machine

Abstract

The utility model relates to a construction drill bit, belongs to the technical field of building construction equipment, and particularly relates to an efficient construction drill bit of a threaded pile machine, which comprises a threaded drill rod, a spiral blade is fixedly mounted on the peripheral wall of the threaded drill rod, and a plurality of straight screw cutting teeth are uniformly and fixedly mounted on the spiral blade. A mounting groove is formed in the bottom of the threaded drill rod; the utility model achieves the effect of high-efficiency piling and drilling, and solves the problems that only one threaded rod is used as a main way for piling and drilling in a retrieval patent, the drilling way is too single, and drilling cannot be carried out or the drilling efficiency is relatively low when a strong weathered rock stratum is encountered like an existing threaded pile drill bit. And a series of problems of discontinuous concrete pouring and the like are possibly caused, so that the pile forming quality is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction equipment, in particular to a high-efficiency construction drill bit for a threaded pile driver. Background Art

[0002] In the field of construction, threaded piles are a dry-process soil-squeezing pile that does not require mud wall protection like rotary drilling piles. They are quieter than rotary drilling piles and have better friction between the pile body and the soil. Compared with ordinary cast-in-place piles, they significantly save costs. They are the most advanced pile type in modern times and are currently being promoted and applied.

[0003] After searching, the Chinese patent with publication number CN219754481U discloses a pile driving drill bit that is easy to replace for pile foundation engineering, including a mounting plate, a fixed plate is provided at the bottom end of the mounting plate, a rectangular groove is opened on the fixed plate, a drive shaft is rotatably connected to the upper end of the rectangular groove, a drive mechanism is provided at the upper end of the drive shaft, a mounting shaft is provided at the bottom end of the drive shaft, a drill bit body is rotatably connected to the bottom end of the fixed plate, a mounting groove is provided at the bottom end of the mounting shaft that is adapted to the upper end of the drill bit body, the upper end of the drill bit body passes through the side wall of the fixed plate and extends into the mounting groove, and is slidably connected to the side wall of the mounting groove, and a resistance plate is provided on both sides of the rectangular groove, and the two resistance plates are provided with an adjustment mechanism.

[0004] Based on the above search and combined with existing technology findings;

[0005] The above patent only uses a threaded rod as the main method for pile drilling, and the drilling method is too simple. Like the existing threaded pile drill bit, it cannot drill or has low drilling efficiency when encountering strongly weathered rock formations, and may cause a series of problems such as discontinuous concrete pouring, thereby affecting the quality of the pile. Therefore, it has certain limitations. Utility Model Content

[0006] In order to solve the above technical problems, the utility model proposes a high-efficiency construction drill bit for a threaded pile driver. By setting a three-level drill tooth design, it can not only improve the efficiency of drilling and piling, but also drill into harder rock formations.

[0007] The technical solution to achieve the purpose of the utility model is: a threaded pile driver high-efficiency construction drill bit, including a threaded drill rod, the outer peripheral wall of the threaded drill rod is fixedly mounted with a spiral blade, a plurality of straight screw picks are evenly fixedly mounted on the spiral blade, and the bottom of the threaded drill rod is provided with a mounting groove.

[0008] Preferably, bucket teeth are symmetrically fixedly mounted on the outer peripheral wall of the threaded drill rod near the bottom end.

[0009] Preferably, a valve baffle is slidably installed inside the installation groove, and fastening bolts are threadedly connected between the two ends of the valve baffle and the threaded drill rod.

[0010] Preferably, a pair of oblique cone screw picks are symmetrically fixedly mounted on the valve baffle.

[0011] Compared with the prior art, the present invention has the following significant advantages:

[0012] First: The utility model sets three drilling processes on the threaded drill rod, and uses the welded oblique cone screw pick as the first-stage drilling drill bit, which can perform the first step of drilling. As the depth decreases, when the bucket tooth contacts the ground, the second-stage drilling process begins, which can further expand the aperture. When the spiral blade contacts the ground with the straight screw pick, the third-stage drilling begins. The three-stage drilling processes are carried out in sequence, thereby ensuring the quality of drilling and piling.

[0013] Second, the utility model's oblique cone screw pick, bucket teeth, and straight screw pick are all made of wear-resistant or hard alloy materials with high strength and good wear resistance, so that they can drill into harder rock formations and improve the efficiency of drilling.

[0014] The invention solves the problem that the search patent only uses a threaded rod as the main method of pile drilling, and the drilling method is too single. Like the existing threaded pile drill bit, it cannot drill into the strongly weathered rock layer or the drilling efficiency is low, and it may cause a series of problems such as discontinuous concrete pouring, thereby affecting the quality of the pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 This is a schematic diagram of the overall first-perspective structure provided by the utility model;

[0017] Figure 2 This is a schematic diagram of the bottom structure of the threaded drill rod provided by the utility model;

[0018] Figure 3 It is a schematic diagram of the structure of the valve baffle provided by the utility model.

[0019] Description of reference numerals:

[0020] 1. Threaded drill rod; 2. Spiral blade; 3. Straight screw pick; 4. Valve baffle; 5. Fastening bolt; 6. Bucket tooth; 7. Mounting slot; 8. Oblique cone screw pick. DETAILED DESCRIPTION

[0021] The following is a detailed description of the present invention, clearly and completely describing the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] The utility model provides an improved high-efficiency construction drill bit for a screw pile driver. The technical solution of the utility model is:

[0023] like Figure 1-3 As shown, a high-efficiency construction drill bit for a threaded pile driver includes a threaded drill rod 1, a spiral blade 2 is fixedly installed on the outer peripheral wall of the threaded drill rod 1, and a plurality of straight screw picks 3 are evenly fixedly installed on the spiral blade 2. A mounting groove 7 is provided at the bottom of the threaded drill rod 1. The straight screw pick 3 provided can further ensure the smooth progress of the drilling process, and the mounting groove 7 provided at the bottom can improve the installation foundation for other components.

[0024] Furthermore, bucket teeth 6 are symmetrically fixedly installed on the outer peripheral wall near the bottom end of the threaded drill rod 1. The provided bucket teeth 6 can play a certain auxiliary role in drilling and piling, making it easier for the straight screw cutter 3 to perform drilling and piling.

[0025] As a further solution of the present invention, a valve baffle 4 is slidably installed inside the mounting groove 7, and fastening bolts 5 are threadedly connected between the two ends of the valve baffle 4 and the threaded drill rod 1. The valve baffle 4 can be stably fixed to the bottom of the threaded drill rod 1 by utilizing the provided mounting groove 7, and fixed by the fastening bolts 5, which is not only convenient for installation, but also easy to disassemble and replace.

[0026] Furthermore, a pair of oblique cone screw picks 8 are symmetrically fixedly mounted on the valve baffle 4. The oblique cone screw picks 8 can first drill holes in the areas where piling is required, and can also crush harder rock formations, thereby ensuring the smooth progress of the drilling process.

[0027] The specific working method is: the valve baffle 4 is stably fixed on the bottom of the threaded drill rod 1 through the fastening bolt 5 and the installation groove 7, and the inclined cone screw pick 8, bucket tooth 6 and straight screw pick 3 are used to achieve three-level pile drilling. During the drilling process, the drilling cutting tools of each level are matched with their operating range, and the soil layer and harder rock layer within the range are efficiently drilled and excavated. Under the three-level drilling mechanism, a combined force is formed to achieve efficient drilling, thereby greatly improving the efficiency and quality of pile drilling.

[0028] The technical means disclosed in the present invention are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacements of the above technical features. Matters not covered in the present invention belong to the common knowledge of those skilled in the art.

Claims

1. A high-efficiency construction drill bit for a threaded pile driver, comprising a threaded drill rod (1), characterized in that: A spiral blade (2) is fixedly mounted on the outer peripheral wall of the threaded drill rod (1), and a plurality of straight screw picks (3) are evenly fixedly mounted on the spiral blade (2). A mounting groove (7) is provided at the bottom of the threaded drill rod (1), and bucket teeth (6) are symmetrically fixedly mounted on the outer peripheral wall of the threaded drill rod (1) near the bottom end. A valve baffle (4) is slidably mounted inside the mounting groove (7), and fastening bolts (5) are commonly connected to the threaded drill rod (1) at both ends of the valve baffle (4), and a pair of oblique cone screw picks (8) are symmetrically fixedly mounted on the valve baffle (4).

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