Directional mechanical hole forming device

Abstract

The utility model provides a directional mechanical hole forming device, and relates to the field of mechanical hole forming. Threads are arranged at the bottom end of the directional drill rod, a moving part capable of freely moving up and down is installed at the bottom end of the directional drill rod through a bottom groove, the two sides of the moving part are each fixedly provided with a positioning block for positioning, and the bottom end of the connection conversion backstop is connected with the mechanical variable-diameter reamer through the threads. The directional mechanical hole-making device is applied to bedding directional long drilling construction in a construction area, the gas extraction amount of a drilled hole constructed by using the directional mechanical hole-making device is 6 times of the shipment amount of a drilled hole constructed by common rotary drilling, 4 times of the gas extraction amount and 2.8 times of the gas extraction concentration, and safe and efficient implementation of bedding directional area measures on a driving working face is ensured; the problems that a common directional mechanical hole making device and directional drilling have certain limitation in application under complex geological conditions of an underground coal mine, and serious hole collapse and drill jamming phenomena occur in soft coal seam holes are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical cavitation, in particular to a directional mechanical cavitation device. Background Art

[0002] Directional drilling technology has been widely used in coal mine gas control. Coal mine gas control is an important part of ensuring coal mine safety production. It involves comprehensive control measures in many aspects, including gas extraction, monitoring, local ventilation, oil-free power supply equipment, etc. When gas extraction is carried out, for non-outburst coal seam uncovering and coal roadway excavation, if there are abnormalities such as suction drill, drill clamping, blowhole, and gas outburst, it is necessary to collect "four indicators" data in accordance with the "Detailed Rules for Preventing and Controlling Coal and Gas Outbursts". If all indicators reach or exceed their critical values, an outburst tendency identification should be carried out, and the coal mining face should adopt comprehensive extraction technology. The gas extraction method should be selected according to the gas outburst volume. These measures together constitute A comprehensive system for gas control in coal mines has been developed, aiming to effectively prevent and control the occurrence of gas accidents and ensure the safety of coal mine production through scientific management and technical means. However, the directional mechanical cavitation device commonly used in the market for gas control in coal mines has certain limitations in its application under complex geological conditions in coal mines. During the long directional drilling along the layer in the working face construction area, if soft coal seams are encountered, serious hole collapse and drill jamming will occur in the hole, which will have a great impact on the safe construction and gas extraction of directional drilling in the working face. In addition, the directional drill rod has a large torque and a limited service life when it is connected to the connection conversion check valve. In addition, the directional guide is prone to collision or objects during movement, which affects the smoothness of the movement of the directional guide. Utility Model Content

[0003] The disclosed embodiment relates to a directional mechanical hole-making device, wherein when the directional guide contacts or collides with an object, the directional guide is automatically tilted by force, so that the connector structure can freely adjust the angle inside the bottom end of the inner hole, and at the same time, the guide rod squeezes the sealing ring and the push rod, and with the help of elasticity, eliminates the collision force and tilting force, and automatically adjusts the angle while avoiding damage to the directional guide and affecting the smoothness of the movement of the directional guide.

[0004] According to a first aspect of the present disclosure, a directional mechanical hole-making device is provided, which specifically includes: a directional drill rod; a thread is provided at the bottom end of the directional drill rod, and a movable part that can be freely displaced up and down is installed at the bottom end of the directional drill rod through a bottom groove, and a positioning block is fixed on both sides of the movable part for positioning, and the movable part, the positioning block and the bottom end of the directional drill rod are inserted into the interior of the positioning groove, and the positioning groove is arranged inside the top end of a connection conversion check valve, and the bottom end of the connection conversion check valve is connected to a mechanical variable diameter reamer through a thread; a bottom rod structure; the bottom rod structure is fixed to the bottom of the mechanical variable diameter reamer, and the bottom rod structure is connected to the guide rod through a moving bin, and a connecting head structure with a spherical structure is fixed to the bottom end of the guide rod, and the connecting head structure is connected to the directional guide.

[0005] In at least some embodiments, the bottom end of the directional drill rod is provided with a bottom groove of a circular ring structure, and a control block is respectively provided on both sides of the interior of the bottom groove; the outside of the directional drill rod is provided with a pull groove arranged in a ring shape, and the interior of the pull groove is connected with the top of the bottom groove; the bottom end of the directional drill rod is connected to the connection conversion check valve through a thread, and a spring is installed on the top of the moving part of the circular tubular structure, and is continuously pushed downward by the spring, and the control block passes through the moving part; a pulling part is fixed to the outside of the top of the moving part, and the pulling part is in the inside of the pull groove and can move freely up and down, the top of the positioning groove is a circular structure, and the bottom of the positioning groove is a cross structure.

[0006] In at least some embodiments, a mobile bin with a T-shaped shaft structure is provided at the bottom of the bottom rod structure, a spring is installed inside the mobile bin, a freely pullable guide rod is inserted into the inside of the mobile bin, and the bottom end of the spring is in contact with the top end of the guide rod; an inner hole is provided at the top of the directional guide, the bottom end of the inner hole is a spherical structure, the top end of the inner hole is a circular structure, a connector structure is inserted into the bottom end of the inner hole, a push rod evenly arranged in an annular shape is fixed to the top of the directional guide, and the inner end of the push rod made of elastic metal is in sliding contact with the outside of the guide rod; a sealing ring made of rubber is inserted into the top of the inner hole, the sealing ring is mounted on the outside of the guide rod, the outer side of the sealing ring is provided with an annularly arranged outer groove, and the push rod is embedded in the inner part of the outer groove.

[0007] The utility model provides a directional mechanical cavitation device, which has the following beneficial effects:

[0008] The connecting conversion check valve is used during the high-pressure water hole making process to prevent the mechanical reducer reamer from being blocked by the high-pressure coal dust in the hole flowing back into the mechanical reducer reamer after the water supply is stopped.

[0009] The directional mechanical hole-making device is used in the construction of long directional drilling holes along the layers in the construction area. The gas extraction volume of the boreholes constructed using the directional mechanical hole-making device is 6 times the output of ordinary rotary drilling construction boreholes, 4 times the gas extraction volume, and 2.8 times the gas extraction concentration. The application of the directional mechanical hole-making device in the regional long directional drilling holes along the layers can achieve the purposes of targeted section coal seam pressure relief, efficient slag discharge, and increased gas extraction, ensuring the safe and efficient implementation of directional regional measures along the layers at the excavation working face.

[0010] After the directional drill rod is connected to the connection conversion backstop, the spring continuously pushes the moving part and the positioning block to move together, so that the positioning block is inserted into the bottom end of the positioning groove, thereby improving the connection strength and preventing the directional drill rod from being damaged when subjected to a large torque.

[0011] During the movement of the device, when the directional guide contacts or collides with an object, the directional guide is automatically tilted by force, so that the connector structure can freely adjust the angle inside the bottom end of the inner hole. At the same time, the guide rod squeezes the sealing ring and the push rod, and with the help of elasticity, eliminates the collision force and tilting force. While automatically adjusting the angle, the directional guide is prevented from being damaged and the smoothness of the movement of the directional guide is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings of the embodiment will be briefly introduced below.

[0013] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0014] In the attached picture:

[0015] Figure 1 A three-dimensional structural schematic diagram of the present application is shown;

[0016] Figure 2 The exploded three-dimensional structure diagram of the present application is shown;

[0017] Figure 3 A schematic diagram of the exploded three-dimensional structure of the directional drill pipe of the present application is shown;

[0018] Figure 4 A schematic diagram of the exploded structure of the directional drill pipe of the present application is shown;

[0019] Figure 5 A partial cross-sectional three-dimensional structural schematic diagram of the bottom rod structure of the present application is shown;

[0020] Figure 6 A schematic diagram of a partial cross-section exploded three-dimensional structure of the bottom rod structure of the present application is shown;

[0021] Reference numerals list

[0022] 1. Directional drill rod; 101. Bottom groove; 102. Pull groove; 103. Moving part; 104. Positioning block; 105. Pulling part; 106. Connection conversion check valve; 107. Positioning groove; 108. Mechanical variable diameter reamer;

[0023] 2. Bottom rod structure; 201. Mobile bin; 202. Guide rod; 203. Connector structure; 204. Directional guide; 205. Inner hole; 206. Push rod; 207. Sealing ring; 208. Outer groove. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1: Please refer to Figures 1 to 6 :

[0026] The utility model proposes a directional mechanical hole making device, comprising: a directional drill rod 1; a thread is arranged at the bottom end of the directional drill rod 1, a moving part 103 which can freely move up and down is installed at the bottom end of the directional drill rod 1 through a bottom groove 101, and a positioning block 104 is driven to move downward together, and a positioning block 104 for positioning is fixed on both sides of the moving part 103, respectively, and the moving part 103, the positioning block 104 and the bottom end of the directional drill rod 1 are inserted into the inside of the positioning groove 107, so as to improve the strength of the connection position and avoid the connection position from being broken when encountering a large torque, and the positioning groove 107 is arranged inside the top end of the connection conversion check 106, and the bottom end of the connection conversion check 106 is connected to the mechanical variable diameter reamer through a thread. 108 is connected, and the conversion check valve 106 is connected to prevent the mechanical variable diameter reamer 108 from being blocked by the high-pressure water hole making process due to the high-pressure coal dust in the hole being backflowed into the mechanical variable diameter reamer 108 after the water supply is stopped; the bottom rod structure 2; the bottom rod structure 2 is fixed to the bottom of the mechanical variable diameter reamer 108, and the bottom rod structure 2 is connected to the guide rod 202 through the movable bin 201. The bottom end of the guide rod 202 is fixed with a connecting head structure 203 with a spherical structure. The connecting head structure 203 is connected to the directional guide 204, so that the directional guide 204 can be freely adjusted in multiple directions outside the connecting head structure 203, so as to avoid the directional guide 204 encountering greater resistance during the movement, thereby improving the service life.

[0027] In the present disclosure, Figure 3 and Figure 4 As shown, the bottom end of the directional drill rod 1 is provided with a bottom groove 101 of an annular structure, and a control block is respectively provided on both sides of the bottom groove 101 to control the vertical up and down movement of the moving member 103. The outside of the directional drill rod 1 is provided with a pull groove 102 arranged in an annular shape, and the inside of the pull groove 102 is connected with the top of the bottom groove 101, so that the pulling member 105 is guided to move inside it; the bottom end of the directional drill rod 1 is connected with the connection conversion check valve 106 through a thread, and the top of the moving member 103 of the circular tubular structure is installed with a spring, and is continuously pushed downward by the spring, and the control block passes through the moving member 103; a pulling member 105 is fixed to the outside of the top of the moving member 103, and the pulling member 105 is in the inside of the pull groove 102 and can move up and down freely, so that the moving member 103 can be controlled to move together by the pulling member 105, and the top of the positioning groove 107 is a circular structure, and the bottom end of the positioning groove 107 is a cross structure, which is used to position the positioning block 104.

[0028] In the present disclosure, Figure 5 and Figure 6 As shown, a mobile bin 201 of a T-shaped shaft structure is provided at the bottom of the bottom rod structure 2, a spring is installed inside the mobile bin 201, and the collision force encountered by the directional guide 204 is eliminated by means of elasticity, a freely withdrawable guide rod 202 is inserted into the mobile bin 201, and the bottom end of the spring contacts the top end of the guide rod 202; an inner hole 205 is provided at the top end of the directional guide 204, the bottom end of the inner hole 205 is a spherical structure, the top end of the inner hole 205 is a circular structure, and a connector structure 203 is inserted into the bottom end of the inner hole 205, and the directional guide 2 A push rod 206 that is evenly arranged in a ring shape is fixed to the top of 04. The inner end of the push rod 206 made of elastic metal is in sliding contact with the outside of the guide rod 202, continuously pushing the guide rod 202, so that when the directional guide 204 tilts, the tilting force is reduced; a sealing ring 207 made of rubber is inserted into the top of the inner hole 205, and the sealing ring 207 is sleeved on the outside of the guide rod 202 to assist in sealing and support the guide rod 202. The outer side of the sealing ring 207 is provided with an outer groove 208 that is arranged in a ring shape, and the inner part of the outer groove 208 is embedded with the push rod 206.

[0029] The working principle of this embodiment is as follows: first, use a Φ98mm drill bit to directional drill to 30m of the cavitation section, then use a Φ153mm drill bit, a Φ193mm drill bit, and a Φ250mm drill bit to expand the hole to 30m of the cavitation section, withdraw all drilling tools, install a variable-diameter mechanical cavitation device and send it into the hole 10m to start preparing for mechanical cavitation. During the movement, when the directional guide 204 encounters a collision, the angle can be freely adjusted on the outside of the connector structure 203, and at the same time, the spring, the push rod 206, and the sealing ring 207 are squeezed to eliminate the tilting force and increase the service life. At the same time, the positioning block 104 is continuously forced to be inserted into the inside of the positioning groove 107 to improve the connection. Strength, to avoid damage after encountering large torque, the diameter of the tool body of the variable diameter mechanical hole making device is 110mm, and the diameter of the tool body expansion hole is 500mm, which can achieve the large-diameter pressure relief effect. The joint connection is 89mm thread, which increases the reverse anti-blocking function. When mechanical hole making, the pressure to start the mechanical hole knife is 5MPa. As the rack piston moves down, the gear knife arm is pushed, and the knife arm of the variable diameter mechanical hole making device begins to open. As the pressure increases, the knife arm enters the hole making state when it is fully opened. During the hole making process, the advance should be slow to fully crush and discharge the coal blocks in the hole. Repeated mechanical hole making operations in the collapsed hole section until there is no drill cuttings returned in the hole, stop supplying water to the variable diameter mechanical hole making device, and complete the directional drilling mechanical hole making.

[0030] In this article, there are a few points to note:

[0031] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0032] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0033] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A directional mechanical cavitation device, characterized in that: include: A directional drill rod (1); the bottom end of the directional drill rod (1) is provided with a thread; a movable member (103) that can freely move up and down is installed at the bottom end of the directional drill rod (1) through a bottom groove (101); a positioning block (104) for positioning is fixed on both sides of the movable member (103); the movable member (103), the positioning block (104) and the bottom end of the directional drill rod (1) are inserted into the positioning groove (107); the positioning groove (107) is provided at the connection conversion backstop (106) ) is connected to the top of the conversion check valve (106), and the bottom end of the connection conversion check valve (106) is connected to the mechanical variable diameter reamer (108) through a thread; a bottom rod structure (2); the bottom rod structure (2) is fixed to the bottom of the mechanical variable diameter reamer (108), the bottom rod structure (2) is connected to the guide rod (202) through a movable bin (201), a spherical connector structure (203) is fixed to the bottom end of the guide rod (202), and the connector structure (203) is connected to the directional guide (204).

2. A directional mechanical cavitation device according to claim 1, characterized in that: The bottom end of the directional drill rod (1) is provided with a bottom groove (101) of an annular structure, and a control block is provided on both sides of the inside of the bottom groove (101). The outside of the directional drill rod (1) is provided with a ring-shaped pull groove (102), and the inside of the pull groove (102) is communicated with the top of the bottom groove (101).

3. A directional mechanical cavitation device according to claim 2, characterized in that: The bottom end of the directional drill rod (1) is connected to the connection conversion check valve (106) via a thread, a spring is installed at the top end of the moving part (103) with a circular tubular structure, and the moving part (103) is continuously pushed downward by the spring, and the control block passes through the moving part (103).

4. A directional mechanical cavitation device according to claim 3, characterized in that: A pulling member (105) is fixed to the outside of the top end of the moving member (103); the pulling member (105) is located inside the pulling groove (102) and is free to move up and down; the top end of the positioning groove (107) is a circular structure, and the bottom end of the positioning groove (107) is a cross-shaped structure.

5. A directional mechanical cavitation device according to claim 4, characterized in that: A mobile bin (201) with a T-shaped shaft structure is provided at the bottom of the bottom rod structure (2), a spring is installed inside the mobile bin (201), a freely pullable guide rod (202) is inserted into the mobile bin (201), and the bottom end of the spring contacts the top end of the guide rod (202).

6. A directional mechanical cavitation device according to claim 5, characterized in that: The top of the directional guide (204) is provided with an inner hole (205), the bottom of the inner hole (205) is a spherical structure, the top of the inner hole (205) is a circular structure, the bottom of the inner hole (205) is inserted with a connector structure (203), the top of the directional guide (204) is fixed with push rods (206) arranged evenly in a ring shape, and the inner ends of the push rods (206) made of elastic metal material are in sliding contact with the outside of the guide rod (202).

7. A directional mechanical cavitation device according to claim 6, characterized in that: A sealing ring (207) made of rubber is inserted into the top end of the inner hole (205). The sealing ring (207) is sleeved on the outside of the guide rod (202). An outer groove (208) arranged in a ring shape is provided on the outer side of the sealing ring (207). A push rod (206) is embedded inside the outer groove (208).

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