Gas control directional long borehole casing device

Abstract

The utility model relates to borehole casing device technical field discloses a kind of gas management directional long borehole casing devices, including casing, fixed seat and drill bit, fixed seat is threadedly connected with casing, the bottom of fixed seat is penetrated by pull rod, is set in the cylindrical groove on drill bit, the bottom of cylindrical groove is set with square groove, the bottom of square groove is clamped with threaded hole, the upper portion of pull rod is sleeved with return spring, the upper end of pull rod is fixedly connected with stop block by bolt, the bottom of fixed seat is integrally configured with outer thread column, outer thread column is threadedly connected with upper push tube, the bottom of upper push tube is integrally configured with multiple lugs, push-in seat is clamped into cylindrical groove, the top of push-in seat is set with multiple grooves, the bottom of push-in seat is set with through hole two, push-in seat top is set with clamping groove, the lower portion of pull rod is fixedly connected with pressure block. The utility model detachable push-in seat and upper push tube structure facilitate later replacement, reduce equipment use cost.

Description

Technical Field

[0001] This utility model belongs to the technical field of drilling casing device, specifically a directional long drilling casing device for gas control. Background Technology

[0002] Directional long borehole casing is a method used for gas control in coal mines. Methane gas in coal mines is a harmful gas that poses a significant threat to miners and mine safety, thus requiring control measures. Directional long borehole drilling is a method of drilling underground, allowing for drilling at greater depths and providing a degree of control over the borehole direction.

[0003] A search revealed a gas control directional long borehole casing device published in announcement number CN220539578U. Its main features are: a casing, one end of which is equipped with a rotary drilling rig; the surface of the rotary drilling rig is provided with a connecting mechanism for connecting the casing; the other end of the casing has a cam groove arranged in a ring; a connector is fitted onto the other end of the casing; one end of the connector is fixedly connected to a limit ring; and one end of the connector is fixedly connected to multiple sliders, which are evenly arranged in a ring and cooperate with the cam groove. The connector has an internal telescopic mechanism.

[0004] In practical use, the applicant found that the cam groove and slider of the aforementioned existing gas control directional long drilling casing device suffer significant wear after prolonged use. Since the structure in this application is an integral unit and cannot be replaced, when the cam groove and slider are severely worn, the casing and drill bit must be replaced directly, resulting in high equipment operating costs. To address these issues, a gas control directional long drilling casing device is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a directional long borehole casing device for gas control in order to solve the problems mentioned above.

[0006] The technical solution adopted by this utility model is as follows: A casing installation device for directional long drilling in gas control includes a casing, a fixed base, and a drill bit. The fixed base is threadedly connected to the casing. A through hole is formed at the bottom of the fixed base, and a pull rod passes through the through hole. A cylindrical groove is formed on the drill bit, and a square groove is formed at the bottom of the cylindrical groove. A threaded hole is fitted at the bottom of the square groove. The lower end of the pull rod is threadedly connected to the threaded hole. A return spring is fitted onto the upper part of the pull rod, and a stop is fixedly connected to the upper end of the pull rod by bolts. The block has an integrally formed external threaded post at the bottom of the fixed base. An upper push tube is connected to the external thread of the external threaded post. Multiple protrusions are integrally formed around the bottom of the upper push tube. A lower push seat is inserted into the cylindrical groove. Multiple grooves are formed around the top of the lower push seat. The grooves are adapted to the protrusions. A second through hole is formed at the bottom of the lower push seat. The lower push seat is sleeved on the pull rod through the second through hole. A slot is formed at the top of the lower push seat. A pressure block is fixedly connected to the lower part of the pull rod. The pressure block is adapted to and engaged with the slot.

[0007] In a preferred embodiment, the top of the fixed base is provided with a movable groove, and both the stop block and the spring are disposed within the movable groove.

[0008] In a preferred embodiment, the lower end of the fixing base is movably connected to the cylindrical groove.

[0009] In a preferred embodiment, the upper end of the fixing seat is provided with a tapered external thread head, and the lower end of the sleeve is provided with a tapered internal thread groove, wherein the tapered external thread head is threadedly connected to the tapered internal thread groove.

[0010] In a preferred embodiment, the bottom of the push base is integrally constructed with a square block, which is adapted to engage with the square groove.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0012] 1. In this utility model, the upper push tube is connected to the external threaded post of the fixed seat, which facilitates the disassembly of the upper push tube. When the protrusion is severely worn, it can be replaced. The lower push seat is pressed and fixed on the drill bit by the pressure block of the pull rod. In the future, the lower push seat can be disassembled by simply removing the pull rod. When the groove is severely worn, it can be replaced. The whole structure facilitates the replacement and maintenance of the upper push tube and the lower push seat, thereby reducing the equipment operating cost. Attached Figure Description

[0013] Figure 1 This is a simplified schematic diagram of the internal structure of this utility model from the front view;

[0014] Figure 2 This is a simplified exploded structural diagram of the present invention;

[0015] Figure 3 This is a simplified schematic diagram of the three-dimensional structure of the square block in this utility model.

[0016] The markings in the diagram are: 1-sleeve, 2-fixed seat, 3-drill bit, 4-through hole one, 5-pull rod, 6-cylindrical groove, 7-square groove, 8-threaded hole, 9-return spring, 10-stop block, 11-external threaded post, 12-upper push tube, 13-protrusion, 14-lower push seat, 15-groove, 16-through hole two, 17-slot, 18-pressure block, 19-movable groove, 20-tapered external thread head, 21-tapered internal thread groove, 22-square block. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] The following will combine Figures 1-3 A detailed description is provided of a gas control directional long borehole casing device according to an embodiment of this utility model. Example:

[0019] This utility model provides a gas control directional long borehole casing installation device, referencing... Figures 1 to 3As shown, the device includes a sleeve 1, a fixing seat 2, and a drill bit 3. The fixing seat 2 is threadedly connected to the sleeve 1. A through hole 4 is opened at the bottom of the fixing seat 2, through which a pull rod 5 passes. A cylindrical groove 6 is opened on the drill bit 3, and a square groove 7 is opened at the bottom of the cylindrical groove 6. A threaded hole 8 is engaged at the bottom of the square groove 7. The lower end of the pull rod 5 is threadedly connected to the threaded hole 8. A return spring 9 is fitted onto the upper part of the pull rod 5. A stop block 10 is fixedly connected to the upper end of the pull rod 5 by bolts. An externally threaded post 11 is integrally constructed at the bottom of the fixing seat 2. An upper push tube 12 is threaded onto the outside of the externally threaded post 11. Multiple protrusions 13 are integrally constructed around the bottom of the upper push tube 12. A lower push seat 14 is engaged in the cylindrical groove 6. Multiple grooves 15 are opened around the top of the lower push seat 14. The groove 15 is adapted to the protrusion 13. The bottom of the push seat 14 is provided with a through hole 16. The push seat 14 is sleeved on the pull rod 5 through the through hole 16. The top of the push seat 14 is provided with a slot 17. The lower part of the pull rod 5 is fixedly connected to a pressure block 18. The pressure block 18 is adapted to and engaged with the slot 17. The above structure constitutes a gas control directional long drilling casing device. When in use, the rotation of the casing 1 will drive the upper push tube 12 on the fixed seat 2 to rotate. The upper push tube 12, through the protrusion 13, cooperates with the groove 15 of the push seat 14, thereby driving the drill bit 3 to rotate. When the resistance is too great during the rotation of the drill bit 3, the protrusion 13 of the upper push tube 12 will move along the groove 15 of the push seat 14. At this time, under the action of the return spring 9, the drill bit 3 will vibrate, thereby facilitating drilling.

[0020] Furthermore, in use, the upper push tube 12 is connected to the external threaded post 11 of the fixed seat 2, which facilitates the disassembly of the upper push tube 12. When the protrusion 13 is severely worn, it can be replaced. The lower push seat 14 is pressed and fixed on the drill bit 3 by the pressure block 18 of the pull rod 5. Thus, the lower push seat 14 can be disassembled by simply removing the pull rod 5. When the groove 15 is severely worn, it can be replaced. The entire structure facilitates the replacement and maintenance of the upper push tube 12 and the lower push seat 14, thereby saving maintenance costs.

[0021] It should be noted that the upper end of casing 1 is connected to a rotary drilling rig, which is a well-known piece of equipment in the field, so this application will not describe it in detail here.

[0022] refer to Figures 1 to 3 As shown, the bottom of the push base 14 has an integrally constructed square block 22, which is adapted to and engaged with the square groove 7. This structure uses the square block 22 in conjunction with the square groove 7 to limit the push base 14 and prevent it from rotating.

[0023] refer to Figures 1 to 3 As shown, the top of the fixed base 2 is fitted with a movable groove 19, and the stop block 10 and the return spring 9 are both set in the movable groove 19. The movable groove 19 facilitates the extension and retraction of the pull rod 5.

[0024] refer to Figures 1 to 3 As shown, the lower end of the fixed base 2 is movably connected to the cylindrical groove 6.

[0025] refer to Figures 1 to 3 As shown, the upper end of the fixing seat 2 is provided with a tapered external thread head 20, and the lower end of the sleeve 1 is provided with a tapered internal thread groove 21. The tapered external thread head 20 and the tapered internal thread groove 21 are threadedly connected. In this structure, the fixing seat 2 is connected to the tapered internal thread groove 21 of the sleeve 1 through the tapered external thread head 20, thereby realizing the connection between the fixing seat 2 and the sleeve 1.

[0026] The implementation principle of a gas control directional long drilling casing device according to an embodiment of this application is as follows: When in use, the rotation of the casing 1 will drive the upper push tube 12 on the fixed seat 2 to rotate. The upper push tube 12, through the protrusion 13 cooperating with the groove 15 of the lower push seat 14, drives the drill bit 3 to rotate. When the resistance is too great during the rotation of the drill bit 3, the protrusion 13 of the upper push tube 12 will move along the groove 15 of the lower push seat 14. At this time, under the action of the return spring 9, the drill bit 3 will generate a vibration effect, thereby facilitating drilling.

[0027] When it is necessary to replace the upper push tube 12 and the lower push seat 14, the operator first removes the fixed seat 2 from the sleeve 1, then removes the stop block 10 from the pull rod 5, and then pulls the pull rod 5 out of the fixed seat 2, so that the drill bit 3 can be removed from the fixed seat 2. Then the operator can remove the upper push tube 12 from the external threaded post 11 of the fixed seat 2, so as to facilitate the replacement of the upper push tube 12. Then the operator removes the pull rod 5 from the drill bit 3. At this time, the pressure plate 18 loses its pressure on the lower push seat 14, so the operator can remove the lower push seat 14, so as to facilitate the replacement of the lower push seat 14. Then the reverse operation can restore the equipment.

[0028] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A casing installation device for directional long borehole drilling in gas control, comprising a casing (1), a fixing base (2), and a drill bit (3), characterized in that: The fixed base (2) is threadedly connected to the sleeve (1). The bottom of the fixed base (2) has a through hole (4). A pull rod (5) passes through the through hole (4). The drill bit (3) has a cylindrical groove (6). The bottom of the cylindrical groove (6) has a square groove (7). The bottom of the square groove (7) has a threaded hole (8). The lower end of the pull rod (5) is threadedly connected to the threaded hole (8). A return spring (9) is fitted into the upper part of the pull rod (5). A stop block (10) is fixedly connected to the upper end of the pull rod (5) by bolts. The bottom of the fixed base (2) has an integrally constructed external threaded column (11). The outer edge of the external threaded column (11) The upper push tube (12) is threadedly connected to the upper push tube (12). The bottom of the upper push tube (12) has a plurality of protrusions (13) integrally formed around it. The lower push seat (14) is inserted into the cylindrical groove (6). The top of the lower push seat (14) has a plurality of grooves (15) around it. The grooves (15) are adapted to the protrusions (13). The bottom of the lower push seat (14) has a through hole (16). The lower push seat (14) is sleeved on the pull rod (5) through the through hole (16). The top of the lower push seat (14) has a slot (17). The lower part of the pull rod (5) is fixedly connected to a pressure block (18). The pressure block (18) is adapted to and engaged with the slot (17).

2. The gas control directional long borehole casing installation device as described in claim 1, characterized in that: The top of the fixed base (2) is fitted with a movable groove (19), and the stop block (10) and the return spring (9) are both located in the movable groove (19).

3. The gas control directional long borehole casing installation device as described in claim 1, characterized in that: The lower end of the fixed base (2) is adapted to be movably inserted into the cylindrical groove (6).

4. The gas control directional long borehole casing installation device as described in claim 1, characterized in that: The upper end of the fixed seat (2) is provided with a tapered external thread head (20), and the lower end of the sleeve (1) is provided with a tapered internal thread groove (21). The tapered external thread head (20) is threadedly connected to the tapered internal thread groove (21).

5. The gas control directional long borehole casing installation device as described in claim 1, characterized in that: The bottom of the push base (14) has an integrally constructed square block (22), which is adapted to engage with the square groove (7).

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