Drill rod and underground drill rig with same

Abstract

The utility model discloses a drill rod and an underground drill rig with the same. The drill rod comprises a rod body and a plurality of blade sets, the blade sets are arranged at intervals in the axial direction of the rod body, each blade set comprises a plurality of blades arranged at intervals in the circumferential direction of the rod body, and the blades are connected with the rod body. The drill rod provided by the embodiment of the utility model is suitable for the underground drill rig, and the plurality of blade groups are arranged, so that the drill rod can drill along a preset track in the drilling process, and the drill rod and a drill bit are always kept in a straight line; therefore, the probability of drilling deviation caused by factors such as the weight of the drill bit, the change of geological conditions, the change of feeding force and the like is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of coal mine drilling rigs, specifically to a drill rod and a tunnel drilling rig having the same. Background Technology

[0002] In coal mine engineering, drilling operations are necessary to prevent geological disasters such as rock bursts, and to achieve purposes such as pressure relief and water injection. Currently, tunnel drilling rigs are commonly used for coal mine drilling. Due to factors such as drilling depth, heavy drill bits, unstable geological structures, and changes in feed force, drilling deviation is prone to occur during the drilling process. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of this utility model propose a drill rod suitable for tunnel drilling rigs. By setting multiple sets of blades, the drill rod can drill along a preset trajectory during the drilling process, and the drill rod and drill bit always maintain a straight line, thereby reducing the probability of borehole deviation caused by factors such as drill bit weight, changes in geological conditions, and changes in feed force.

[0005] The drill pipe of this utility model embodiment includes a rod body and multiple sets of blades. The multiple sets of blades are arranged at intervals along the axial direction of the rod body. Each blade set includes multiple blades arranged at intervals along the circumferential direction of the rod body. The blades are connected to the rod body.

[0006] In some embodiments, the projections of two adjacent sets of blades onto the cross-section of the rod body do not overlap.

[0007] In some embodiments, the number of blade groups is two.

[0008] In some embodiments, the blade has a first side and a second side arranged opposite to each other along the axial direction of the rod body, the first side and the second side gradually approaching each other along the radial direction of the rod body.

[0009] In some embodiments, the blade includes a connecting portion and a blade body arranged radially outward along the rod body, the connecting portion being connected to the rod body, and the blade body being detachably connected to the connecting portion.

[0010] In some embodiments, the leaf body includes a first leaf portion and a second leaf portion, the first leaf portion being detachably connected to the connecting portion, and the second leaf portion being detachably connected to the first leaf portion; wherein a portion of the second side surface is formed on the first leaf portion and another portion is formed on the second leaf portion.

[0011] In some embodiments, the connecting portion has a first groove extending axially along the rod body, and the first blade portion is slidably connected to the first groove; and / or the first blade portion has a second groove extending axially along the rod body, and the second blade portion is slidably connected to the second groove.

[0012] In some embodiments, one end of the first groove has a first groove wall, and the first leaf has a first abutting surface that abuts against the first groove wall; and / or the second groove has a second groove wall, and the first leaf has a second abutting surface that abuts against the second groove wall.

[0013] In some embodiments, the blade further includes a first bolt and nut assembly, wherein the first blade portion is connected to the connecting portion via the first bolt and nut assembly; and / or the blade further includes a second bolt and nut assembly, wherein the second blade portion is connected to the first blade portion via the second bolt and nut assembly.

[0014] The tunnel drilling rig of this utility model includes the drill rod described in any of the above embodiments.

[0015] The drill rod of this utility model embodiment has blades that can increase the contact area between the drill rod and the borehole wall, providing support and guidance for the drill rod, improving the stability of the drill rod during drilling, and enhancing the drill rod's adaptability to complex geological conditions. By setting multiple sets of blades, the drill rod can drill along a preset trajectory during drilling, and the drill rod and drill bit always remain in a straight line, thereby reducing the probability of borehole deviation caused by factors such as drill bit weight, changes in geological conditions, and changes in feed force. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a drill rod according to an embodiment of the present invention.

[0017] Figure 2 This is a schematic projection of the drill rod in the cross-section of one embodiment of the present invention.

[0018] Figure 3 This is an exploded schematic diagram of the blades of a drill rod according to an embodiment of the present invention.

[0019] Figure label:

[0020] 100. Drill pipe;

[0021] 1. Rod body;

[0022] 2. Blade; 21. First side surface; 22. Second side surface; 23. Connecting part; 231. First groove; 2311. First groove wall; 24. First blade; 241. Second groove; 2411. Second groove wall; 242. First slide bar; 2421. First stop surface; 25. Second blade; 251. Second slide bar; 2511. Second stop surface;

[0023] 3. First bolt and nut assembly;

[0024] 4. Second bolt and nut assembly. Detailed Implementation

[0025] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0026] like Figure 1 As shown, the drill pipe 100 of this utility model embodiment includes a pipe body 1 and multiple sets of blade groups. The multiple sets of blade groups are arranged at intervals along the axial direction of the pipe body 1. Each blade group includes multiple blades 2 arranged at intervals along the circumferential direction of the pipe body 1. The blades 2 are connected to the pipe body 1.

[0027] In this embodiment of the invention, the blades 2 of the drill rod 100 increase the contact area between the drill rod 100 and the borehole wall, providing support and guidance for the drill rod 100, improving the stability of the drill rod 100 during drilling, and enhancing the adaptability of the drill rod 100 to complex geological conditions. By setting multiple sets of blades, the drill rod 100 can drill along a preset trajectory during drilling, and the drill rod 100 and the drill bit always remain in a straight line, thereby reducing the probability of borehole deviation caused by factors such as drill bit weight, changes in geological conditions, and changes in feed force.

[0028] Optionally, such as Figure 1 As shown, the blade group consists of three blades 2.

[0029] Optionally, such as Figure 1 As shown, the blade group includes multiple blades 2 that are evenly arranged along the circumference of the rod body 1.

[0030] In some embodiments, such as Figure 2 As shown, the projections of two adjacent sets of blades onto the cross-section of the rod body 1 do not overlap.

[0031] With the above settings, the two adjacent sets of blades 2 can also establish multiple support points between the circumference of the rod body 1 and the borehole wall, improving the support stability of the drill rod 100 and thus further reducing the probability of borehole deviation.

[0032] In some embodiments, the number of blade groups is two.

[0033] The two sets of blades can form a dual guiding and supporting function, ensuring that the drill pipe 100 maintains a straight movement during drilling and reducing the chance of borehole deviation; at the same time, the number of blade sets is not too large, which can reduce costs.

[0034] In some embodiments, such as Figure 1 and Figure 2 As shown, the blade 2 has a first side surface 21 and a second side surface 22 arranged opposite to each other along the axial direction of the rod body 1, and the first side surface 21 and the second side surface 22 gradually approach each other along the radial direction of the rod body 1.

[0035] By tilting the first side 21 and the second side 22 along the axial direction of the drill rod 100, the drill rod 100 can be guided to advance, guiding it to drill along a predetermined trajectory and improving its stability during the drilling process.

[0036] As an example, such as Figure 1 As shown, the blade 2 is an isosceles trapezoid in shape to form a first side 21 and a second side 22 that are relatively inclined.

[0037] In some embodiments, such as Figure 3 As shown, the blade 2 includes a connecting part 23 and a blade body arranged radially outward along the rod body 1. The connecting part 23 is connected to the rod body 1, and the blade body is detachably connected to the connecting part 23.

[0038] With the above settings, when the blade 2 or the rod body 1 is deformed or damaged, the blade body and the connecting part 23 can be separated, and the rod body 1 or the blade body can be replaced, thereby reducing the maintenance cost of the drill pipe 100.

[0039] Optionally, the connecting part 23 is welded to the rod body 1.

[0040] In some embodiments, such as Figure 3 As shown, the leaf body includes a first leaf portion 24 and a second leaf portion 25. The first leaf portion 24 is detachably connected to the connecting portion 23, and the second leaf portion 25 is detachably connected to the first leaf portion 24. A portion of the second side surface 22 is formed on the first leaf portion 24, and another portion is formed on the second leaf portion 25.

[0041] It is known that during drilling, the physical and chemical properties of the formation may change as the depth of the bottom layer increases. To adapt to these changes, it is necessary to change the drill bit with a different diameter, and the borehole diameter will change accordingly.

[0042] With the above settings, when the borehole diameter changes, the radial dimension of the blade 2 along the rod body 1 can be matched with the borehole diameter by disassembling and assembling the second blade 25. Thus, the blade 2 can play a better guiding and supporting role, allowing the drill rod 100 to drill in the preset direction and reducing the probability of borehole deviation.

[0043] For example, in hard rock formations, smaller diameter drill bits are needed to reduce wear and improve drilling efficiency; in this case, the second blade 25 needs to be removed from the first blade 24 to reduce the overall size of the blade 2, and multiple first blades 24 provide guidance and support for the drill rod 100.

[0044] In soft rock or soil layers, a larger diameter drill bit is required to increase the drilling speed. In this case, the second blade 25 needs to be assembled to the first blade 24 to increase the overall size of the blade 2. The drill rod 100 provides guidance and support through multiple second blades 25.

[0045] In some embodiments, such as Figure 3 As shown, the connecting portion 23 has a first groove 231 extending axially along the rod body 1, and the first blade portion 24 is slidably connected to the first groove 231; and / or the first blade portion 24 has a second groove 241 extending axially along the rod body 1, and the second blade portion 25 is slidably connected to the second groove 241.

[0046] With the above settings, the first leaf 24 is connected to the connecting part 23 by sliding, and the second leaf 25 is connected to the first leaf 24 by sliding, which makes operation more convenient.

[0047] As an example, such as Figure 3 As shown, the connecting part 23 has a first sliding groove 231, and the first blade 24 includes a first sliding strip 242, which is slidably connected to the first sliding groove 231. After the first blade 24 and the connecting part 23 are assembled, the two sides of the first blade 24 arranged opposite each other along the circumference of the rod body 1 are flush with the two sides of the connecting part 23 arranged opposite each other along the circumference of the rod body 1. The first blade 24 has a second sliding groove 241, and the second blade 25 includes a second sliding strip 251, which is slidably connected to the second sliding groove 241. After the second blade 25 and the first blade 24 are assembled, the two sides of the second blade 25 arranged opposite each other along the circumference of the rod body 1 are flush with the two sides of the first blade 24 arranged opposite each other along the circumference of the rod body 1, thereby ensuring the overall strength of the blade 2.

[0048] In some embodiments, such as Figure 3As shown, one end of the first groove 231 has a first groove wall 2311, and the first blade 24 has a first abutting surface 2421 that abuts against the first groove wall 2311; and / or the second groove 241 has a second groove wall 2411, and the first blade 24 has a second abutting surface 2511 that abuts against the second groove wall 2411.

[0049] Through the above settings, the first groove wall 2311 and the second groove wall 2411 can serve as assembly limiters, improving the ease of assembly of the first blade 24 and the second blade 25. For example, when the first stop surface 2421 abuts against the first groove wall 2311, it indicates that the first blade 24 is installed in place; when the second stop surface 2511 abuts against the second groove wall 2411, it indicates that the second blade 25 is installed in place.

[0050] In some embodiments, the blade 2 further includes a first bolt and nut assembly 3, through which the first blade portion 24 and the connecting portion 23 are connected; and / or the blade 2 further includes a second bolt and nut assembly 4, through which the second blade portion 25 and the first blade portion 24 are connected.

[0051] The first bolt and nut assembly 3 enables a stable and detachable connection between the first blade 24 and the connecting part 23, and the second bolt and nut assembly 4 enables a stable and detachable connection between the second blade 25 and the first blade 24.

[0052] As an example, such as Figure 3 As shown, the bolt of the first bolt and nut assembly 3 passes through the two groove walls of the first slide bar 242 and the first slide groove 231, thereby connecting the first blade 24 and the connecting part 23. The bolt of the second bolt and nut assembly 4 passes through the two groove walls of the second slide bar 251 and the second slide groove 241, thereby connecting the second blade 25 and the first blade 24.

[0053] Optionally, there may be multiple first bolt and nut assemblies 3, which are evenly arranged along the axial direction of the rod body 1.

[0054] Therefore, the connection stability between the first leaf 24 and the connecting part 23 can be improved by using multiple first bolt and nut assemblies 3.

[0055] Optionally, such as Figure 3 As shown, there are multiple second bolt and nut assemblies 4, which are evenly arranged along the axial direction of the rod body 1.

[0056] Therefore, the connection stability between the second blade 25 and the first blade 24 can be improved by using multiple second bolt and nut assemblies 4.

[0057] The tunnel drilling rig of this utility model includes the drill rod 100 of any of the above embodiments.

[0058] The tunnel drilling rig of this utility model has blades 2 on its drill rod 100. The blades 2 can increase the contact area between the drill rod 100 and the borehole wall, provide support and guidance for the drill rod 100, improve the stability of the drill rod 100 during the drilling process, and improve the adaptability of the drill rod 100 to complex geological conditions. By setting multiple sets of blades, the drill rod 100 can drill along a preset trajectory during the drilling process, and the drill rod 100 and the drill bit always keep a straight line, thereby reducing the probability of borehole deviation caused by factors such as drill bit weight, changes in geological conditions, and changes in feed force.

[0059] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0060] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0061] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0062] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0063] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0064] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A drill pipe (100), characterized in that, It includes a rod body (1) and multiple sets of blades, the multiple sets of blades are arranged at intervals along the axial direction of the rod body (1), the blades include multiple blades (2) arranged at intervals along the circumferential direction of the rod body (1), and the blades (2) are connected to the rod body (1). The blade (2) has a first side (21) and a second side (22) arranged opposite each other along the axial direction of the rod body (1), and the first side (21) and the second side (22) gradually approach each other along the radial direction of the rod body (1); The blade (2) is generally in the shape of an isosceles trapezoid; The blade (2) includes a connecting part (23) and a blade body arranged radially outward along the rod body (1). The connecting part (23) is connected to the rod body (1), and the blade body is detachably connected to the connecting part (23). The leaf body includes a first leaf portion (24) and a second leaf portion (25), the first leaf portion (24) being detachably connected to the connecting portion (23), and the second leaf portion (25) being detachably connected to the first leaf portion (24); A portion of the second side (22) is formed on the first leaf (24), and another portion is formed on the second leaf (25).

2. The drill pipe (100) according to claim 1, characterized in that, The projections of two adjacent sets of blades onto the cross section of the rod body (1) do not overlap.

3. The drill pipe (100) according to claim 1, characterized in that, The number of blade groups is two.

4. The drill pipe (100) according to claim 1, characterized in that, The connecting portion (23) has a first groove (231) extending axially along the rod body (1), and the first blade (24) is slidably connected to the first groove (231); and / or The first blade (24) has a second groove (241) extending axially along the rod body (1), and the second blade (25) is slidably connected to the second groove (241).

5. The drill pipe (100) according to claim 4, characterized in that, One end of the first groove (231) has a first groove wall (2311), and the first blade (24) has a first abutment surface (2421) that abuts against the first groove wall (2311); and / or The second groove (241) has a second groove wall (2411), and the first leaf (24) has a second abutting surface (2511) that abuts against the second groove wall (2411).

6. The drill pipe (100) according to claim 5, characterized in that, The blade (2) further includes a first bolt and nut assembly (3), wherein the first blade portion (24) is connected to the connecting portion (23) via the first bolt and nut assembly (3); and / or The blade (2) further includes a second bolt and nut assembly (4), wherein the second blade (25) is connected to the first blade (24) via the second bolt and nut assembly (4).

7. A tunnel drilling rig, characterized in that, Includes the drill pipe (100) according to any one of claims 1-6.

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