Circulating drilling machine capable of automatically connecting drill rods and provided with power head arranged on top

Abstract

The invention relates to a circulating drilling machine with a drill rod automatically connected and a power head arranged at the top. Comprising a walking chassis, a mast, a power head and a drill rod, the mast is vertically arranged on the walking chassis, the power head is arranged on the mast, the power head moves up and down along the mast through a guide rail arranged on the mast and provides driving force through a set of chain driving mechanism, and the top of the drill rod is clamped through the power head; the drilling rod splicing device further comprises a drilling rod splicing module located beside the moving track of the power head, and the drilling rod splicing module is arranged at the lower end of the mast and used for clamping and transferring the drilling rod to the position below the power head, so that the drilling rod is continuously conveyed to the power head when the drilling rod needs to be spliced. According to the circulating drilling machine, a crown block and a matched winch in a traditional mast system are omitted, the structure of the whole machine is simplified, the circulating drilling machine can be matched with a power head driven by a chain on the premise of low clearance, and the high-rigidity and large-stroke drill rod delivery capacity is achieved.

Description

Technical Field

[0001] The invention relates to the field of engineering machinery, in particular to an engineering drilling rig, in particular to a circulating drilling rig with an automatically connected drill rod and an overhead power head. Background Art

[0002] There are several major problems with current engineering drilling rigs: 1. The power head is driven by a winch and a crane, which requires a complex traction system and components such as a crane and a winch, resulting in a relatively complicated structure of the entire device. 2. The power head clamps the drill rod from the middle, resulting in a shorter downward stroke of the entire drill rod, making it impossible to use a single long drill rod; 3. During the drill rod splicing process, the drill rod needs to be lifted by a crane and then spliced ​​with several workers. In this way, the whole process is dangerous and the labor intensity of the workers is very high.

[0003] Based on the above reasons, there are still areas for improvement in the use of current drilling rigs. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned defects and to provide a circulation drilling rig which can realize mechanized connection of drill rods and increase the downward stroke of the drill rods.

[0005] In order to achieve the above object, the present invention is achieved in the following ways: A circulating drilling rig with automatic drill rod splicing and an overhead power head comprises a traveling chassis, a mast, a power head and a drill rod, wherein the mast is vertically arranged on the traveling chassis, and the power head is arranged on the mast, and the power head is used to connect the drill rod; the power head moves up and down along the mast through a guide rail arranged on the mast and provides driving force through a set of chain drive mechanisms, and the top of the drill rod is connected to the power head, and under the drive of the chain drive mechanism, the power head continuously sends the drill rod into the ground from top to bottom along the guide rail on the mast; and also comprises a drill rod splicing module located beside the running track of the power head, and the drill rod splicing device is arranged at the lower end of the mast, and is used to clamp the drill rod and transfer it to the bottom of the power head, so as to continuously transport the drill rod to the power head when the drill rod needs to be spliced.

[0006] The circulating drilling rig with automatic drill pipe splicing and overhead power head, the drill pipe splicing module includes an orifice plate located at the lower part of the mast, the orifice plate is mechanically opened and closed by an oil cylinder, a drill pipe bracket is arranged beside the orifice plate, the drill pipe bracket is used to lift the horizontal drill pipe and turn it to a vertical state after being clamped, and then the power head is rotated and pressurized to realize the splicing of each drill pipe; the splicing adopts automatic rotation of the power head.

[0007] The circulating drilling rig with automatic drill pipe connection and overhead power head, the orifice plate and the drill pipe support are arranged on the same bottom support, the bottom support is located below the mast, one end of the drill pipe support is rotatably connected to the bottom support, and the other end of the drill pipe support is rotatably connected to the bottom support through an oil cylinder, so that the drill pipe support can rotate around the bottom support under the drive of the oil cylinder.

[0008] In the above-mentioned circulating drilling rig with automatic drill pipe splicing and overhead power head, the orifice plate remains closed when the drill pipe is connected to the power head, so that the drill pipe to be spliced ​​is clamped and lifted to a vertical state through the drill pipe bracket, and then the drill pipe is placed on the orifice plate. At this time, the power head moves downward and clamps the drill pipe, and then the orifice plate opens, and the power head moves downward into the hole with the clamped drill pipe to operate or splice different drill pipes by rotating the power head.

[0009] The above-mentioned circulation drilling rig proposed by the present invention has several major advantages: 1. Compared with the existing technology, the drill pipe splicing module is used to realize the drill pipe splicing operation, thereby greatly reducing the work intensity of on-site operators and even enabling all-weather operation.

[0010] 2. The overhead crane and the matching winch in the traditional mast system are omitted, thus simplifying the structure of the whole machine. At the same time, the circulating drilling rig proposed by the present invention can achieve a large range of drill rod delivery under the premise of low clearance.

[0011] 3. Clamp the drill rod from the top so that the length of a single drill rod can be ~; combined with a chain-driven power head, high-rigidity and long-stroke drill rod delivery capabilities can be achieved.

[0012] Furthermore, in order to facilitate the drill rod splicing operation, a crane is arranged on the traveling chassis, and the crane cooperates with the drill rod support in the drill rod splicing module to position and put the drill rod to be spliced ​​into place. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The working state of the circulating drilling rig proposed by the present invention is shown in FIG. Figure 1 .

[0014] Figure 2 The working state of the circulating drilling rig proposed by the present invention is shown in FIG. Figure 2 .

[0015] Figure 3 The working state of the circulating drilling rig proposed by the present invention is shown in FIG. Figure 3 .

[0016] Figure 4 It is a structural schematic diagram of the drill pipe connecting device in the present invention. DETAILED DESCRIPTION

[0017] The technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments in the embodiments of the present application are within the scope of protection requested by the present application.

[0018] A circulating drilling rig with an automatic drill pipe connection and an overhead power head, comprising a traveling chassis, a mast, an electrically driven or hydraulically driven power head and a drill pipe, wherein the mast is vertically arranged on the traveling chassis, and a power head is arranged on the mast, wherein the power head is used to connect the drill pipe; the power head moves up and down along the mast via a guide rail arranged on the mast and provides driving force via a set of chain drive mechanisms.

[0019] Furthermore, the mast is hollow, and a chain drive mechanism for driving the power head is placed in the mast. The chain drive mechanism can be driven by a hydraulic source or by a motor; Furthermore, the top of the drill rod is connected to a power head, and driven by a chain drive mechanism, the power head continuously sends the drill rod into the ground from top to bottom along the guide rail on the mast.

[0020] The circulating drilling rig also includes a drill rod connecting module located beside the running track of the power head. The drill rod connecting device is arranged at the lower end of the mast, which is used to clamp the drill rod and transfer it to the bottom of the power head, so as to continuously transport the drill rod to the power head when the drill rod needs to be connected.

[0021] The drill pipe splicing module includes an orifice plate located at the lower part of the mast, the orifice plate is mechanically opened and closed by an oil cylinder, a drill pipe bracket is arranged beside the orifice plate, the drill pipe bracket is used to lift the horizontal drill pipe after being clamped and turn it to a vertical state, and then the drill pipe is spliced ​​by rotating and pressurizing the power head; the splicing adopts automatic rotation of the power head; Furthermore, the orifice plate and the drill rod support are arranged on the same bottom support, and the bottom support is located below the mast. One end of the drill rod support is rotatably connected to the bottom support, and the other end of the drill rod support is rotatably connected to the bottom support via an oil cylinder. In this way, the drill rod support can rotate around the bottom support under the drive of the oil cylinder.

[0022] Furthermore, during use, the orifice plate remains closed when the drill rod is connected to the power head, so that the drill rod to be connected is clamped and lifted to a vertical state through the drill rod bracket, and then the drill rod is placed on the orifice plate. At this time, the power head moves downward and clamps the drill rod, and then the orifice plate opens, and the power head moves downward into the hole with the clamped drill rod to work or connect different drill rods by rotating the power head.

[0023] When the above-mentioned circulating drilling rig is actually operated, a hollow drill pipe can be selected as needed, and a faucet is set above the power head to transport external mud to the middle of the drill pipe through the faucet, thereby realizing circulating drilling or hole cleaning operations.

[0024] The above are only embodiments provided for the present application and are not intended to limit the present application. Although the present application is described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A circulating drilling rig with automatic drill pipe connection and overhead power head, comprising a traveling chassis, a mast, a power head and a drill pipe, wherein the mast is vertically arranged on the traveling chassis, and the power head is arranged on the mast, and the power head is used to connect the drill pipe; wherein the characteristics are: The power head moves up and down along the mast through the guide rails arranged on the mast and provides driving force through a set of chain drive mechanisms. The top of the drill rod is clamped by the power head. Driven by the chain drive mechanism, the power head continuously sends the drill rod into the ground from top to bottom along the guide rails on the mast. The power head also includes a drill rod connecting module located beside the running track of the power head. The drill rod connecting device is arranged at the lower end of the mast, which is used to clamp the drill rod and transfer it to the bottom of the power head, so as to continuously transport the drill rod to the power head when the drill rod needs to be connected.

2. The circulating drilling rig with automatic drill pipe connection and overhead power head according to claim 1 is characterized in that: The drill rod connection module includes an orifice plate located at the lower part of the mast, which is mechanically opened and closed by an oil cylinder. A drill rod bracket is arranged beside the orifice plate, which is used to lift the horizontal drill rod and turn it to a vertical state after being clamped. Subsequently, the drill rods are connected by rotating and pressurizing the power head; the connection is automatically connected by rotating the power head.

3. The circulating drilling rig with automatic drill pipe connection and overhead power head according to claim 2 is characterized in that: The orifice plate and the drill rod support are arranged on the same bottom support, and the bottom support is located below the mast. One end of the drill rod support is rotatably connected to the bottom support, and the other end of the drill rod support is rotatably connected to the bottom support via an oil cylinder. In this way, the drill rod support can rotate around the bottom support under the drive of the oil cylinder.

4. The circulating drilling rig with automatic drill pipe connection and overhead power head according to claim 2 or 3, characterized in that: When the drill rod is connected to the power head, the orifice plate remains closed, so that the drill rod to be connected is clamped and lifted to a vertical state through the drill rod bracket, and then the drill rod is placed on the orifice plate. At this time, the power head moves downward and connects to the drill rod. After that, the orifice plate opens, and the power head moves downward into the hole with the connected drill rod to operate or connect different drill rods by rotating the power head.

5. The circulating drilling rig with automatic drill pipe connection and overhead power head according to claim 1 is characterized in that: The length of a single drill rod is ~.

6. The circulating drilling rig with automatic drill pipe connection and overhead power head according to claim 1 or 2, characterized in that: A crane is arranged on the walking chassis, and the crane cooperates with the drill rod support in the drill rod connecting module to position and put the drill rod to be connected into place.

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