Auxiliary soil unloading device for drill bit of rotary drilling machine

Abstract

The utility model belongs to the technical field of rotary drilling rigs, and discloses an auxiliary soil unloading device for a drill bit of a rotary drilling rig, which comprises a main rod, a supporting rod, a base and a fixing structure, the main rod and the supporting rod are of rod-shaped structures, and the main rod and the supporting rod are fixedly connected and are vertically arranged; the main rod is perpendicular to the base and fixedly connected with the base, and the fixing structure is fixedly connected with the base. The problem that soil is difficult to unload when the drill bit of the rotary drilling machine encounters soil with many broken stones and large viscidity is solved, and the device is simple in structure, does not generate noise pollution or waste other resources, and has a good effect.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary drilling rigs, in particular to a rotary drilling rig drill bit auxiliary soil unloading device. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] At present, the construction technology of bored piles is becoming more and more mature, and the frequency of use of rotary drilling machines is also increasing. However, in the actual construction process, we often encounter complex environments such as gravel and clay in the soil layer, which makes the soil too sticky. This makes it difficult for the drill to unload the soil during the construction process. The existing technology uses methods such as knocking the drill bit and flushing the drill bit with a high-pressure water gun, which causes noise pollution, waste of water resources, equipment damage and other problems. In order to solve the above problems, the utility model provides a rotary drilling machine drill bit auxiliary unloading device. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the embodiments of the utility model is to provide a rotary drilling rig drill bit auxiliary soil unloading device to solve the problem of difficulty in unloading soil by the rotary drilling rig drill bit in the prior art.

[0005] In order to achieve the above-mentioned purpose, the embodiment of the utility model provides the following technical solutions:

[0006] A rotary drilling rig drill bit auxiliary soil unloading device, comprising:

[0007] Main pole, support pole, base and fixed structure,

[0008] The main rod and the supporting rod are both rod-shaped structures, the main rod and the supporting rod are fixedly connected, and the two are arranged vertically;

[0009] The main rod is perpendicular to the base and fixedly connected to the base, and the fixed structure is fixedly connected to the base.

[0010] The utility model is a simple rod-type structure, which is directly fixed to the ground through a fixed structure. The rotary drill bit carrying soil is rotated and pressed down, so that the main rod and the support rod of the device penetrate into the drill bit. The support rod rubs with the clay and gravel in the rotary drill bit, forcing the soil to loosen, thereby completing the soil unloading. At the same time, the downward pressure of the rotary drill bit is transmitted to the base through the device, thereby enhancing the friction between the base and the ground, so that the device is firmly combined with the ground.

[0011] In some embodiments, multiple layers of support rods are arranged on the main rod, and the distances between the support rods in adjacent layers are the same.

[0012] In some embodiments, a plurality of support rods are provided in each support rod layer, and the support rods in the same layer are arranged at equal intervals.

[0013] In some embodiments, four struts are provided per strut layer.

[0014] In some embodiments, the main rod and the support rod are both round rods, and the diameter of the main rod is greater than the diameter of the support rod.

[0015] In some embodiments, the main rod and the supporting rod are integrally formed or connected by welding.

[0016] In some embodiments, one end of the support rod connected to the main rod is a fixed end, and the diameter of the free end of the support rod is smaller than the diameter of the fixed end to prevent the rotary drill bit from breaking during rotation.

[0017] In some embodiments, the fixed structure is a plurality of fixed steel columns perpendicular to the base, fixing the base on the ground.

[0018] In some embodiments, the base is a square plate, and a plurality of fixed steel columns are respectively disposed at the four corners of the base.

[0019] In some embodiments, the main rod, the support rod and the base are all made of stainless steel.

[0020] One or more technical solutions provided in the embodiments of the present utility model have at least the following technical effects or advantages:

[0021] 1. The device of the utility model has a simple structure, and is composed of a base, a main rod and its additional support rods. The structure is simple, strong and easy to maintain. When cooperating with the rotary drilling rig to unload soil, it is only necessary to fix the device on the ground, and the rotary drilling rig itself rotates and slowly presses down to make the device penetrate into the drill bit to loosen the soil, so that the soil in the drill bit can be loosened and unloaded. At the same time, the downward pressure of the rotating drill bit is reasonably used to enhance the friction between the base and the ground, so that the device is firmly combined with the ground, and the problem that the device rotates with the drill bit and affects the operation because the torque of the drill bit is greater than the friction between the base and the ground is solved.

[0022] 2. This device is a rod-shaped structure with an appropriate spacing between support rods. When the soil is unloaded deep inside the drill bit, the clay inside the drill bit will not be squeezed more densely due to excessive pressure. Instead, the soil inside the drill bit will become loose through the friction between the support rods and the rotating drill bit, so as to achieve the purpose of unloading soil.

[0023] 3. This device is independent of the rotary drilling rig and is used to cooperate with the rotary drilling rig in construction. It is not connected to the rotary drilling rig and can be withdrawn at any time when not in use. The soil is unloaded from the inside of the drill bit by stirring, and basically no noise is generated, achieving the practical, efficient and environmentally friendly effects of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0025] Figure 1 It is a structural front view of the drill bit auxiliary soil unloading device for a rotary drilling rig provided by an embodiment of the utility model;

[0026] Figure 2 It is a top view of the structure of the rotary drilling rig drill bit auxiliary soil unloading device provided by the embodiment of the utility model;

[0027] Figure 3 It is a bottom view of the structure of the rotary drilling rig drill bit auxiliary soil unloading device provided by the embodiment of the utility model;

[0028] In the figure: 1. Support rod; 2. Main rod; 3. Base; 4. Fixed steel column.

[0029] In order to show the positions of various parts, the distances or sizes between them are exaggerated and the schematic diagram is for reference only. DETAILED DESCRIPTION

[0030] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0031] As introduced in the background technology, when the rotary drilling rig drill bit encounters soil with a lot of gravel and high viscosity, it is difficult to unload the soil. The methods used in the prior art have the problems of high noise, waste of resources and poor effect. In order to solve the above technical problems, the utility model proposes a rotary drilling rig drill bit auxiliary soil unloading device.

[0032] like Figure 1 As shown, an embodiment of the utility model records a rotary drilling rig drill bit auxiliary soil unloading device, including a main rod 2, a support rod 1, a base 3 and a fixed structure. The main rod 2 and the support rod 1 are both rod-shaped structures. The main rod 2 is fixedly connected to the support rod 1, and the two are vertically arranged; the main rod 2 is perpendicular to the base 3 and is fixedly connected to the base 3, and the fixed structure is fixedly connected to the base 3. The base 3 and the entire device are fixed to the ground through the fixed structure. The main rod 2 and the support rod 1 of the device penetrate into the drill bit, and the support rod 1 rubs against the soil to loosen the soil, thereby realizing the soil unloading function.

[0033] Optionally, multiple layers of support rods 1 are arranged on the main rod 2, the distances between the support rods 1 of adjacent layers are the same, and the distance between the upper and lower textures is set to 5-15 cm, which is adjusted according to actual needs.

[0034] like Figure 2As shown, optionally, multiple support rods 1 are provided on each support rod layer 1, and the support rods 1 on the same layer are arranged at equal intervals; specifically, four support rods 1 are provided on each support rod layer 1, and the four support rods 1 are arranged at equal intervals, that is, the four support rods 1 are arranged in a cross shape.

[0035] Optionally, the main rod 2 and the support rod 1 are both round rods, and the diameter of the main rod 2 is larger than the diameter of the support rod 1. The round rod has the smallest force-bearing area, which can effectively reduce the pressure of the soil on the support rod 1. At the same time, the setting of the round rod can also increase the force level of the support rod 1, preventing the support rod 1 and the main rod 2 from breaking. At the same time, the setting of the round rod support rod 1 also makes the rod body of the support rod 1 less prone to damage, preventing the support rod 1 from collapsing when encountering gravel.

[0036] The sizes of the main rod 2 and the support rod 1 can be adjusted according to actual needs. Preferably, the main rod 2 is a cylinder with a length of 1.5m and a diameter of 15cm. The main rod 2 is vertically fixed on the base 3, and one end of the main rod 2 is firmly connected to the base 3; the support rod 1 is a steel column with a length of 10cm and a diameter of 3cm, and one end of the support rod 1 is fixed on the main rod 2.

[0037] Optionally, the main rod 2 and the support rod 1 are integrally formed or connected by welding.

[0038] Optionally, the diameter of the free end of the support rod 1 is smaller than the diameter of the fixed end. The fixed end of the support rod refers to the end where the support rod 1 is connected to the main rod 2, and the free end refers to the end of the support rod 1 extending outward. The connection point between the support rod 1 and the main rod 2 increases the diameter of the support rod 1, making the connection between the support rod 1 and the main rod 2 more secure, avoiding the support rod 1 from falling off due to excessive torque, and during operation, it can fully withstand the pressure generated by clay and gravel during the rotation and downward pressure of the drill bit.

[0039] Optionally, the fixing structure is a plurality of fixing steel columns 4 perpendicular to the base 3, fixing the base 3 on the ground.

[0040] Optional, such as Figure 3 As shown, the base 3 is a square plate, and a plurality of fixed steel columns 4 are respectively arranged at the four corners of the base 3. Preferably, 16 fixed steel columns 4 are arranged, with 4 at each corner.

[0041] The sizes of the base 3 and the fixed steel column 4 can be adjusted according to actual needs. Preferably, the base 3 is set to a 1m square steel plate with a thickness of 1cm. A fixed steel column 4 is fixed on the base 3. The fixed steel column 4 is 5cm long and 3cm in diameter.

[0042] In some embodiments, the main rod 2, the support rod 1, the base 3 and the fixed steel column 4 are all made of stainless steel.

[0043] When in use, the device is fixed within the operating radius of the rotary drilling rig, and the device is fixed to the ground by fixing the steel column 4. After the rotary drilling rig completes drilling, when the drill bit carrying clay or clay mixed with crushed stone is pulled out of the pile hole to unload the soil, the drill bit is moved to the top of the device, and the drill bit is slowly lowered. During the lowering process, the drill bit is slowly rotated so that the device is slowly inserted into the drill bit. As the drill bit rotates deeper, the support rod 1 contacts the clay or crushed stone clay in the drill bit, and the torque generated by the rotation causes the support rod 1 of the device to rub against the clay or crushed stone clay to achieve the soil unloading effect. When the clay or crushed stone clay in the drill bit is loosened and falls off, the drill bit is slowly rotated and raised to separate the device from the drill bit, and the next drilling operation is started.

[0044] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A rotary drilling rig drill bit auxiliary soil unloading device, characterized in that: include: Main pole, support pole, base and fixed structure, The main rod and the supporting rod are both rod-shaped structures, the main rod and the supporting rod are fixedly connected, and the two are arranged vertically; The main rod is perpendicular to the base and fixedly connected to the base, and the fixed structure is fixedly connected to the base.

2. The rotary drilling rig drill bit auxiliary soil unloading device according to claim 1, characterized in that: Multiple layers of support rods are arranged on the main rod, and the distances between the support rods in adjacent layers are the same.

3. The rotary drilling rig drill bit auxiliary soil unloading device according to claim 2, characterized in that: Each layer of support rods is provided with a plurality of support rods, and the support rods on the same layer are arranged at equal intervals.

4. The rotary drilling rig drill bit auxiliary soil unloading device according to claim 3, characterized in that: Each layer of support poles is provided with 4 support poles.

5. The rotary drilling rig drill bit auxiliary soil unloading device according to claim 1, characterized in that: The main rod and the supporting rod are both round rods, and the diameter of the main rod is larger than the diameter of the supporting rod.

6. The rotary drilling rig drill bit auxiliary soil unloading device according to claim 1, characterized in that: The main rod and the supporting rod are arranged in one piece or connected by welding.

7. The rotary drilling rig drill bit auxiliary soil unloading device according to claim 1, characterized in that: One end of the support rod connected to the main rod is a fixed end, and the diameter of the free end of the support rod is smaller than the diameter of the fixed end of the support rod, so as to prevent the rotary drill bit from breaking during the rotation process.

8. The rotary drilling rig drill bit auxiliary soil unloading device according to claim 1, characterized in that: The fixed structure is a plurality of fixed steel columns perpendicular to the base, which fix the base to the ground.

9. The rotary drilling rig drill bit auxiliary soil unloading device according to claim 8, characterized in that: The base is a square plate, and a plurality of fixed steel columns are respectively arranged at the four corners of the base.

10. The rotary drilling rig drill bit auxiliary soil unloading device according to claim 1, characterized in that: The main rod, support rod and base are all made of stainless steel.

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