Directional drilling and reaming drill rod for coal mine

Abstract

The utility model provides a coal mine directional drilling and chambering drill rod, and relates to the technical field of drilling equipment, the coal mine directional drilling and chambering drill rod comprises a drill rod body, a mounting groove is formed in the drill rod body, a chambering plate is arranged in the mounting groove in a limiting sliding mode, and a driving assembly, a supporting assembly and a shielding assembly are arranged in the mounting groove; the driving assembly is used for driving the chambering plate to stretch out of or retract into the mounting groove, the supporting assembly is used for supporting the chambering plate, and the shielding assembly is used for shielding an opening of the mounting groove; the drill rod integrates a reaming function on the drill rod body, a reaming drill bit does not need to be replaced, and the working efficiency is improved; the drill rod is provided with the supporting assembly, so that the stability in the reaming process is ensured; the drilling rod is provided with the shielding assembly, so that the situation that broken stone or soil enters the mounting groove in the drilling process to cause blockage and affect normal stretching and retracting of the reaming plate is prevented, and therefore the fault rate of the drilling rod is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drilling equipment, in particular to a coal mine directional drilling reaming drill rod. BACKGROUND

[0002] In the process of coal mine gas extraction, first drilling operation is needed, and then reaming treatment is needed for the deep part of the drill hole to improve the extraction efficiency. However, the current operation process requires the drill rod to be taken out first, and then the reaming drill bit is replaced for reaming, which needs to be completed in two steps, takes a long time, and at the same time, deviation phenomenon is easy to occur during reaming, directional reaming cannot be achieved, thereby affecting the accuracy of reaming. SUMMARY

[0003] The purpose of the embodiment of the present application is to provide a coal mine directional drilling reaming drill rod, which can solve the technical problem that the coal mine gas extraction needs to be drilled first and then reamed to improve the efficiency, but the existing process needs to replace the drill bit in two steps, which takes time and is easy to deviate, affecting the accuracy of reaming.

[0004] The embodiment of the present application provides a coal mine directional drilling reaming drill rod, which comprises a drill rod body, an installation slot is formed in the drill rod body, a reaming plate is limitedly and slidably arranged in the installation slot, and a driving assembly, a supporting assembly and a shielding assembly are arranged in the installation slot, the driving assembly is used to drive the reaming plate to extend out of or retract into the installation slot, the supporting assembly is used to support the reaming plate, and the shielding assembly is used to shield the opening of the installation slot.

[0005] Among them, the driving assembly is a gas cylinder, the gas cylinder is fixedly arranged in the installation slot, and the gas cylinder drives the reaming plate to extend out of or retract into the installation slot.

[0006] Among them, the supporting assembly comprises a supporting rod, a first motor, a first screw rod and a guide rod, a first sliding groove is formed in the drill rod body, the first sliding groove is in communication with the installation slot, the first screw rod is rotatably arranged in the first sliding groove through a bearing, the first motor drives the first screw rod to rotate, the guide rod is fixedly arranged in the first sliding groove, the supporting rod is threadedly sleeved on the first screw rod, and the supporting rod is slidably sleeved on the guide rod, a trapezoidal groove is formed in the inner side of the reaming plate, and the supporting rod can abut against the inner wall of the trapezoidal groove and the outer wall of the reaming plate.

[0007] The shielding assembly comprises a shielding plate, a second motor and a second screw rod, a second sliding groove is formed in the drill rod body, the second sliding groove is communicated with the mounting groove, the second screw rod is rotatably arranged in the second sliding groove through a bearing, the second motor drives the second screw rod to rotate, the shielding plate is limitingly and slidably arranged in the second sliding groove, and the shielding plate is threadedly sleeved on the second screw rod.

[0008] The support assembly is provided with two, and the two support assemblies are arranged on the upper and lower sides of the trapezoidal groove.

[0009] The shape of the shielding plate is matched with the shape of the outer wall of the reamer plate.

[0010] The outer wall of the drill rod body and the outer side of the reamer plate are fixedly provided with drill teeth.

[0011] The beneficial effects of the utility model are as follows:

[0012] The coal mine directional drilling reamer drill rod provided by the utility model can realize normal drilling operation when the reamer plate is retracted in the mounting groove and the opening of the mounting groove is shielded by the shielding assembly; when reaming is needed, the reamer plate is extended out of the mounting groove through the driving assembly, and then the reamer plate is supported through the support assembly, so that the drill rod body can perform reaming operation; the drill rod integrates the reaming function on the drill rod body, so that the reamer drill bit does not need to be replaced, and the operation efficiency is improved; the drill rod is provided with the support assembly, so that the stability during reaming is ensured; the drill rod is provided with the shielding assembly, so that the gravel or soil in the drilling process is prevented from entering the mounting groove to cause blockage, the normal extension and retraction of the reamer plate are affected, and the failure rate of the drill rod is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0014] Figure 1 It is a sectional view of the overall front view structure of the reamer plate in the retracted state in some embodiments of the present application.

[0015] Figure 2 It is a sectional view of the overall front view structure of the reamer plate in the extended state in some embodiments of the present application.

[0016] Figure 3A schematic view of the overall front structure in some embodiments of the present application;

[0017] Figure 4 A schematic view of the overall top structure in some embodiments of the present application;

[0018] Figure 5 A schematic view of the overall front structure in some embodiments of the present application; Figure 1 A schematic view of the enlarged structure at A.

[0019] The reference signs are respectively:

[0020] 1, drill rod body; 11, mounting groove; 12, first sliding groove; 13, second sliding groove; 14, drill bit;

[0021] 2, reamer plate; 21, trapezoidal groove;

[0022] 3, driving assembly; 31, air cylinder;

[0023] 4, support assembly; 41, support rod; 42, first motor; 43, first screw rod; 44, guide rod;

[0024] 5, shielding assembly; 51, shielding plate; 52, second motor; 53, second screw rod. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts fall within the scope of protection of the present application.

[0027] It should be noted that: similar reference signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0028] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0029] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0030] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] As shown in Figures 1 to 5 The present application provides a coal mine directional drilling reaming drill rod, which comprises a drill rod body 1, a mounting groove 11 is formed on the drill rod body 1, a reaming plate 2 is limitingly and slidably arranged in the mounting groove 11, and a driving assembly 3, a supporting assembly 4 and a shielding assembly 5 are arranged in the mounting groove 11. The driving assembly 3 is used to drive the reaming plate 2 to extend out of or retract into the mounting groove 11. The supporting assembly 4 is used to support the reaming plate 2. The shielding assembly 5 is used to shield the opening of the mounting groove 11.

[0032] In use, the reaming plate 2 is retracted in the mounting groove 11, and the shielding assembly 5 shields the opening of the mounting groove 11, so that the drill rod body 1 can perform normal drilling operation. When reaming is needed, the reaming plate 2 is driven by the driving assembly 3 to extend out of the mounting groove 11, and then the reaming plate 2 is supported by the supporting assembly 4, so that the drill rod body 1 can perform reaming operation.

[0033] The drill rod integrates the reaming function on the drill rod body 1, without changing the reaming drill bit, improving the operation efficiency; the drill rod is provided with the supporting assembly 4, ensuring the stability in the reaming process; the drill rod is provided with the shielding assembly 5, preventing the stones or soil in the drilling process from entering the installation groove 11 to cause the blockage, affecting the normal expansion and contraction of the reaming plate 2, thereby reducing the failure rate of the drill rod.

[0034] As shown in Figures 1 to 5 the embodiment, the driving assembly 3 is a gas cylinder 31, the gas cylinder 31 is fixedly arranged in the installation groove 11, and the gas cylinder 31 drives the reaming plate 2 to extend out or retract into the installation groove 11; in use, the gas cylinder 31 is opened to drive the reaming plate 2 to extend out of the installation groove 11; the gas cylinder 31 has the characteristics of fast response speed and large force, and can quickly complete the extension and retraction of the reaming plate 2.

[0035] As shown in Figures 1 to 5 the embodiment, the supporting assembly 4 includes a supporting rod 41, a first motor 42, a first screw rod 43 and a guide rod 44, the drill rod body 1 is provided with a first sliding groove 12, the first sliding groove 12 is communicated with the installation groove 11, the first screw rod 43 is rotatably arranged in the first sliding groove 12 through a bearing, the first motor 42 drives the first screw rod 43 to rotate, the guide rod 44 is fixedly arranged in the first sliding groove 12, the supporting rod 41 is threadedly sleeved on the first screw rod 43, and the supporting rod 41 is slidably sleeved on the guide rod 44, the inner side of the reaming plate 2 is provided with a trapezoidal groove 21, and the supporting rod 41 can abut against the inner wall of the trapezoidal groove 21 and the outer wall of the reaming plate 2.

[0036] In use, the reaming plate 2 extends out of the installation groove 11, and then the first motor 42 is opened to drive the first screw rod 43 to rotate, the first screw rod 43 drives the supporting rod 41 to move to abut against the inner wall of the trapezoidal groove 21 or the outer wall of the reaming plate 2, so that the supporting rod 41 can support the reaming plate 2; by arranging the trapezoidal groove 21, when the reaming plate 2 extends to a certain length, the supporting rod 41 can abut against the inclined inner wall of the trapezoidal groove 21, and when the reaming plate 2 extends to the maximum length, the supporting rod 41 can abut against the outer wall of the reaming plate 2, no matter how long the reaming plate 2 extends, the supporting rod 41 can support the reaming plate 2; the cooperation of the supporting rod 41 and the guide rod 44 plays a guiding and limiting role on the supporting rod 41.

[0037] As shown in Figures 1 to 5 the embodiment, the shielding assembly 5 includes a shielding plate 51, a second motor 52 and a second screw rod 53, the drill rod body 1 is provided with a second sliding groove 13, the second sliding groove 13 is communicated with the installation groove 11, the second screw rod 53 is rotatably arranged in the second sliding groove 13 through a bearing, the second motor 52 drives the second screw rod 53 to rotate, the shielding plate 51 is limitingly and slidably arranged in the second sliding groove 13, and the shielding plate 51 is threadedly sleeved on the second screw rod 53, and the shielding plate 51 can enter the installation groove 11 and abut against the outer wall of the reaming plate 2.

[0038] When hole enlargement is required, the second motor 52 is turned on to drive the second screw 53 to rotate. The second screw 53 drives the baffle plate 51 to retract into the second slide groove 13. Then, the cylinder 31 is turned on to drive the hole enlargement plate 2 to extend out of the mounting groove 11. Then, the baffle plate 51 is moved into the mounting groove 11 and abuts against the outer wall of the hole enlargement plate 2, which can block the opening of the mounting groove 11 and prevent gravel or soil from entering the mounting groove 11 and causing blockage during the hole enlargement process. The cooperation between the baffle plate 51 and the second slide groove 13 plays a guiding and limiting role for the baffle plate 51.

[0039] like Figures 1 to 5 As shown, in this embodiment, there are two support components 4, which are respectively located on the upper and lower sides of the trapezoidal groove 21. The two support components 4 provide support forces in both the upper and lower directions for the hole-expanding plate 2, which further improves the stability of the hole-expanding plate 2 during the hole-expanding process.

[0040] like Figures 1 to 5 As shown, in this embodiment, the shape of the baffle plate 51 is closely matched with the shape of the outer wall of the expansion plate 2; when the baffle plate 51 enters the mounting groove 11 and abuts against the outer wall of the expansion plate 2, it can fit tightly and effectively prevent the entry of gravel or soil.

[0041] like Figures 1 to 5 As shown, in this embodiment, drill teeth 14 are fixedly provided on the outer wall of the drill rod body 1 and the outer side of the reaming plate 2; the design of the drill teeth 14 improves the cutting ability of the drill rod and the reaming plate 2, making the drilling and reaming process smoother.

[0042] Working principle: The reaming drill rod for directional drilling in coal mines provided in this application, when used for drilling, has the reaming plate 2 retracted into the mounting groove 11, and the blocking component 5 blocking the opening of the mounting groove 11. At this time, the drill rod body 1 can perform normal drilling operations. When reaming is required, the second motor 52 is turned on to drive the second screw 53 to rotate. The second screw 53 drives the blocking plate 51 to move back into the second sliding groove 13. Then, the cylinder 31 is turned on to drive the reaming plate 2 to extend out of the mounting groove 11. Then, the blocking plate 51 is moved to enter the mounting groove 11 and abut against the outer wall of the reaming plate 2, thus blocking the opening of the mounting groove 11. Then, the first motor 42 is turned on to drive the first screw 43 to rotate. The first screw 43 drives the support rod 41 to move to abut against the inner wall of the trapezoidal groove 21 or the outer wall of the reaming plate 2. The support rod 41 can then support the reaming plate 2. At this time, the drill rod body 1 can perform reaming operations.

[0043] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A drilling rod for reaming boreholes in coal mines, characterized in that: The device includes a drill rod body (1), on which an installation groove (11) is provided. A reaming plate (2) is slidably disposed in the installation groove (11). A drive assembly (3), a support assembly (4), and a blocking assembly (5) are provided in the installation groove (11). The drive assembly (3) is used to drive the reaming plate (2) to extend or retract from the installation groove (11). The support assembly (4) is used to support the reaming plate (2). The blocking assembly (5) is used to block the opening of the installation groove (11).

2. The coal mine directional drilling and reaming drill rod according to claim 1, characterized in that: The driving component (3) is a cylinder (31), which is fixedly installed in the mounting groove (11) and drives the expansion plate (2) to extend or retract into the mounting groove (11).

3. The coal mine directional drilling and reaming drill rod according to claim 1, characterized in that: The support assembly (4) includes a support rod (41), a first motor (42), a first screw (43), and a guide rod (44). The drill rod body (1) has a first sliding groove (12) connected to the mounting groove (11). The first screw (43) is rotatably mounted in the first sliding groove (12) via a bearing. The first motor (42) drives the first screw (43) to rotate. The guide rod (44) is fixedly mounted in the first sliding groove (12). The support rod (41) is threaded onto the first screw (43) and slidably mounted onto the guide rod (44). The inner side of the expansion plate (2) has a trapezoidal groove (21). The support rod (41) can abut against the inner wall of the trapezoidal groove (21) and the outer wall of the expansion plate (2).

4. The coal mine directional drilling and reaming drill rod according to claim 1, characterized in that: The shielding assembly (5) includes a shielding plate (51), a second motor (52), and a second screw (53). A second sliding groove (13) is provided in the drill rod body (1). The second sliding groove (13) is connected to the mounting groove (11). The second screw (53) is rotatably disposed in the second sliding groove (13) through a bearing. The second motor (52) drives the second screw (53) to rotate. The shielding plate (51) is slidably disposed in the second sliding groove (13) and the shielding plate (51) is threaded onto the second screw (53). The shielding plate (51) can enter the mounting groove (11) and abut against the outer wall of the borehole expansion plate (2).

5. The coal mine directional drilling and reaming drill rod according to claim 3, characterized in that: There are two support components (4), which are respectively located on the upper and lower sides of the trapezoidal groove (21).

6. The coal mine directional drilling and reaming drill rod according to claim 4, characterized in that: The shape of the shield (51) is appropriately matched with the shape of the outer wall of the expansion plate (2).

7. The coal mine directional drilling and reaming drill rod according to claim 1, characterized in that: Drill teeth (14) are fixedly provided on the outer wall of the drill rod body (1) and the outer side of the reaming plate (2).

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