A crawler directional drilling machine for coal mines

Abstract

The present invention relates to the technical field of directional drilling machines, and proposes a crawler-type directional drilling machine for coal mines, including a drilling machine body, an annular cavity and a cleaning member, wherein the drilling machine body is used for drilling operations after installing a drill rod, the drill rod side wall has a spiral groove, an annular cavity, the annular cavity is rotatably arranged on the drilling machine body, the annular cavity is used for sleeved outside the drill rod, the annular cavity has an annular outer wall and an annular inner wall, the annular inner wall is close to the drill rod, the annular outer wall is provided with an outer vent hole, the annular inner wall is provided with an inner vent hole, and a cleaning member is arranged on the annular inner wall, and the cleaning member is used for cleaning the drill rod. Through the above technical scheme, the problem of dust and other dirt on the surface of the drill rod when it is recovered in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of directional drilling machines, and in particular to a crawler-type directional drilling machine for coal mines. Background Art

[0002] Directional drilling rigs are equipment used for underground drilling operations, especially for situations where precise control of the trajectory of the borehole is required. Through the combination of a bottom hole motor and a guide tool, a directional drilling rig can precisely control the trajectory of the borehole and improve the accuracy and efficiency of drilling. Its main components include drill pipes, connectors, bottom hole motors, guide tools, sensors and monitoring equipment, drill bits, mud pumping systems, and control systems. Directional drilling rigs are widely used in oil and gas exploration, municipal engineering, geological exploration, mining, and environmental remediation.

[0003] The current directional drilling rigs need to continuously connect drill rods during directional drilling to meet the corresponding drilling depth requirements. After drilling to the corresponding depth requirements, the drill rods often need to be recovered, disassembled section by section and discharged, waiting to be used next time. However, there will be a lot of dust and dirt on the surface of the drill rod after drilling. If it is not cleaned in time, it may cause problems such as corrosion of the drill rod surface, which is not conducive to the recovery operation of the recovery mechanism. Summary of the invention

[0004] The invention provides a crawler-type directional drilling machine for coal mines, which solves the problem that the surface of the drill rod of the directional drilling machine in the prior art has dirt such as dust when it is recovered.

[0005] The technical solution of the present invention is as follows: A crawler directional drilling rig for coal mines, comprising:

[0006] The drilling rig body is used for drilling operations after installing a drill rod, and the side wall of the drill rod has a spiral groove.

[0007] An annular cavity, the annular cavity is rotatably arranged on the drilling rig body, the annular cavity is used to be sleeved outside the drill rod, the annular cavity has an annular outer wall and an annular inner wall, the annular inner wall is close to the drill rod, the annular outer wall is provided with an outer vent hole, and the annular inner wall is provided with an inner vent hole,

[0008] A cleaning member is arranged on the annular inner wall and is used for cleaning the drill rod.

[0009] As a further technical solution, it also includes:

[0010] An elastic telescopic member, one end of which is arranged on the annular inner wall, and the other end of which is in contact with the side wall of the drill rod and continuously presses the side wall of the drill rod.

[0011] As a further technical solution, it also includes:

[0012] The second cleaning member is arranged on the elastic telescopic member, the free end of the second cleaning member is close to the side wall of the drill rod, the second cleaning member is used to clean the spiral groove, and there is a gap between the second cleaning member and the cleaning member.

[0013] As a further technical solution,

[0014] There are a plurality of outer vent holes and a plurality of inner vent holes, and the plurality of outer vent holes are evenly arranged along the circumference of the annular outer wall, and the plurality of inner vent holes are evenly arranged along the circumference of the annular inner wall.

[0015] As a further technical solution, it also includes:

[0016] An annular filter screen is arranged in the annular cavity.

[0017] As a further technical solution,

[0018] An annular groove is provided on the inner wall of the annular filter screen, an annular cavity is formed between the annular groove and the annular inner wall, and the annular cavity is communicated with the inner vent hole.

[0019] As a further technical solution,

[0020] The annular filter screen is rotatably disposed in the annular cavity.

[0021] As a further technical solution, it also includes:

[0022] an annular guide rail, the annular guide rail is arranged in the annular groove,

[0023] A counterweight block is slidably arranged on the annular guide rail.

[0024] As a further technical solution, it also includes:

[0025] An air jet assembly is arranged on the drilling rig body and is located at one side of the annular cavity.

[0026] As a further technical solution,

[0027] The jet assembly includes a plurality of nozzles, and the plurality of nozzles are arranged around the circumference of the drill pipe.

[0028] There are two jet assemblies, and the two jet assemblies are respectively located on two sides of the annular cavity.

[0029] The working principle and beneficial effects of the present invention are:

[0030] In the present invention, when the drilling rig body recovers the drill rod, the drill rod may rotate or move only in the axial direction according to actual needs. During this process, the annular cavity rotates, which drives the cleaning member to rotate. On the one hand, the rotation of the cleaning member can clean the entire range of the drill rod, which can be cleaned more thoroughly. On the other hand, the drill rod can move in its axial direction or rotate in its circumferential direction, and the movement speed or rotation speed of the drill rod will change according to the actual control situation. Then, when a part of the drill rod passes through the annular cavity, the cleaning direction of the cleaning member will also change accordingly, so the surface of the drill rod can be better cleaned. Secondly, when the cleaning member rotates, a certain part Cleaning along the groove direction of the spiral groove will make the spiral groove part clean relatively cleaner. In addition, when the cleaning piece cleans the drill pipe, there will definitely be dust that can easily cause environmental pollution. External air vents and internal air vents are respectively opened on the annular outer wall and the annular inner wall. When the annular cavity rotates, the air flow rate at the annular outer wall is large, which will cause the external air vent to extract the gas in the annular cavity to make the annular cavity have a negative pressure. Then the internal air vent will intake air into the annular cavity, and the dust will be drawn into the annular cavity, which has the effect of dust absorption, reduces the dust content in the environment, and the impact on the health of the staff who stay in this environment for a long time will also be smaller. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] Figure 1 The structure of the present invention is shown in FIG. Figure 1 ;

[0033] Figure 2 The structure of the present invention is shown in FIG. Figure 2 ;

[0034] Figure 3 It is a schematic diagram of the three-dimensional structure of the annular cavity part of the present invention;

[0035] Figure 4 This is a schematic diagram of the main structure of the annular cavity of the present invention;

[0036] Figure 5 It is a right side structural schematic diagram of the annular cavity part of the present invention;

[0037] Figure 6 For the present invention Figure 5 Schematic diagram of the AA section structure;

[0038] Figure 7 For the present invention Figure 5 Schematic diagram of the BB cross-section structure;

[0039] Figure 8 It is a schematic diagram of the drill rod structure of the present invention;

[0040] In the figure: 1-drilling rig body, 2-drill rod, 21-spiral groove, 3-annular cavity, 31-annular outer wall, 32-annular inner wall, 33-external vent, 34-inner vent, 4-cleaning member, 51-elastic telescopic member, 53-second cleaning member, 54-gap, 6-annular filter, 61-annular groove, 62-annular cavity, 63-annular guide rail, 64-counterweight, 7-jet assembly, 71-nozzle. DETAILED DESCRIPTION

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0042] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0043] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0045] like Figure 1-8As shown, the present invention proposes a crawler directional drilling rig for coal mines, including a drilling rig body 1, an annular cavity 3 and a cleaning member 4. The drilling rig body 1 is used for drilling operations after a drill rod 2 is installed. A spiral groove 21 is provided on the side wall of the drill rod 2. The annular cavity 3 is rotatably arranged on the drilling rig body 1. The annular cavity 3 is used to be sleeved outside the drill rod 2. The annular cavity 3 has an annular outer wall 31 and an annular inner wall 32. The annular inner wall 32 is close to the drill rod 2. An outer vent hole 33 is opened on the annular outer wall 31, and an inner vent hole 34 is opened on the annular inner wall 32. The cleaning member 4 is arranged on the annular inner wall 32. The cleaning member 4 is used to clean the drill rod 2.

[0046] In this embodiment, when the drilling rig body 1 recovers the drill rod 2, the drill rod 2 may rotate or only move axially according to actual needs. During this process, the annular cavity 3 rotates, which will drive the cleaning member 4 to rotate. On the one hand, the rotation of the cleaning member 4 can clean the entire range of the drill rod 2, which can be cleaned more thoroughly. On the other hand, the drill rod 2 can move along its axial direction or rotate along its circumference, and the movement speed or rotation speed of the drill rod 2 will change according to the actual control situation. Then, when a part of the drill rod 2 passes through the annular cavity 3, the cleaning direction of the cleaning member 4 will also change accordingly, so the surface of the drill rod can be better cleaned. Secondly, when the cleaning member 4 rotates, a certain part will move along the spiral groove Cleaning the groove direction of the groove 21 will make the spiral groove 21 part relatively cleaner. In addition, when the cleaning piece 4 cleans the drill rod 2, there will definitely be dust that can easily cause environmental pollution. An outer air vent 33 and an inner air vent 34 are respectively provided on the annular outer wall 31 and the annular inner wall 32. When the annular cavity 3 rotates, the air flow rate at the annular outer wall 31 is large, which will cause the outer air vent 33 to extract the gas in the annular cavity 3 to make the annular cavity 3 have a negative pressure. Then the inner air vent 34 will intake air into the annular cavity 3, and the dust will be drawn into the annular cavity 3, which has the effect of dust collection, reduces the dust content in the environment, and the impact on the health of the staff who stay in this environment for a long time will also be smaller.

[0047] Furthermore, it also includes an elastic telescopic member 51 , one end of which is arranged on the annular inner wall 32 , and the other end of which contacts with the side wall of the drill rod 2 and continuously presses the side wall of the drill rod 2 .

[0048] In this embodiment, the free end of the elastic telescopic member 51, that is, the end used to contact the side wall of the drill rod 2, during the movement of the drill rod 2, the free end of the elastic telescopic member 51 will penetrate into the spiral groove 21, and under the continuous movement of the drill rod 2 and the driving action of the spiral groove 21, the elastic telescopic member 51 will move along the spiral groove 21, so that the annular cavity 3 can be driven to rotate, which is very convenient. Of course, in addition to the drive of the spiral groove 21, the annular cavity 3 can also be driven to rotate by a motor arranged on the drilling rig body 1. The elastic telescopic member 51 can be a cylinder or a telescopic rod, and the free end of the elastic telescopic member 51 is connected to a plastic slider.

[0049] Furthermore, it also includes a second cleaning member 53, which is arranged on the elastic telescopic member 51, and the free end of the second cleaning member 53 is close to the side wall of the drill pipe 2. The second cleaning member 53 is used to clean the spiral groove 21, and there is a gap 54 between the second cleaning member 53 and the cleaning member 4.

[0050] In this embodiment, when the elastic telescopic member 51 slides in the spiral groove 21, the second cleaning member 53 will specifically clean the dust and dirt in the spiral groove 21. In addition, the existence of the gap 54 can prevent the cleaning member 4 close to the spiral groove 21 from blocking the dust and dirt in the spiral groove 21 from coming out, so that the spiral groove 21 can be cleaned more thoroughly.

[0051] Furthermore, there are a plurality of outer vent holes 33 and a plurality of inner vent holes 34 . The plurality of outer vent holes 33 are evenly arranged along the circumference of the annular outer wall 31 , and the plurality of inner vent holes 34 are evenly arranged along the circumference of the annular inner wall 32 .

[0052] In this embodiment, the plurality of outer vents 33 on the annular outer wall 31 and the plurality of inner vents 34 on the annular inner wall 32 of the annular cavity 3 continue to function. When the annular cavity 3 rotates, the air flow rate at the outer vents 33 is fast, so that a negative pressure is formed in the annular cavity 3, and then the air of the cleaned dust and dirt is sucked into the annular cavity 3 through the inner vents 34. The design of uniformly arranging the plurality of outer vents 33 along the circumference of the annular outer wall 31 and uniformly arranging the plurality of inner vents 34 along the circumference of the annular inner wall 32 ensures the uniformity and stability of the air flow, further improves the dust collection efficiency of the cleaned dust and dirt, effectively reduces the dust content in the environment, and provides a cleaner working environment for the staff.

[0053] Furthermore, an annular filter screen 6 is included, and the annular filter screen 6 is arranged in the annular cavity 3.

[0054] In this embodiment, the annular filter screen 6 is arranged in the annular cavity 3. During the dust collection process, the annular filter screen 6 can effectively filter the sucked air containing dust and dirt in the spiral groove 21. Its existence ensures the durability of the dust collection effect, prevents the filtered dust and dirt from escaping and polluting the environment again, and ensures that the staff is always in a relatively healthy working environment during the process of cleaning the drill rod 2.

[0055] Furthermore, an annular groove 61 is formed on the inner wall of the annular filter 6 , and an annular cavity 62 is formed between the annular groove 61 and the annular inner wall 32 . The annular cavity 62 is communicated with the inner vent hole 34 .

[0056] In this embodiment, the annular cavity 62 formed between the annular groove 61 on the inner wall of the annular filter 6 and the annular inner wall 32 plays an important role in the dust collection process. When the air with dust and dirt is sucked into the annular cavity 3, it first enters the annular cavity 62 and then passes through the annular filter 6 for filtration. This design optimizes the air flow path, prevents dust and dirt from accumulating near the inner vent 34 and causing blockage, and improves the dust collection effect and efficiency.

[0057] Furthermore, the annular filter screen 6 is rotatably disposed in the annular cavity 3 .

[0058] In this embodiment, the annular filter screen 6 is rotatably arranged in the annular cavity 3, and the annular filter screen 6 also rotates when the drill rod 2 is cleaned. This design prevents the inhaled dust and dirt from accumulating in a certain part of the filter screen, making the filtering effect more uniform. At the same time, the rotating annular filter screen 6 increases the contact area with the air containing dust and dirt, thereby improving the filtering efficiency.

[0059] Furthermore, it also includes an annular guide rail 63 and a counterweight block 64 . The annular guide rail 63 is arranged in the annular groove 61 , and the counterweight block 64 is slidably arranged on the annular guide rail 63 .

[0060] In this embodiment, the counterweight block 64 can be slid and fixed at any position of the annular guide rail 63. In this way, due to the effect of gravity, a certain part of the annular filter 6 is heavy. When the annular cavity 3 rotates, the annular filter 6 will be rotated relative to the annular cavity 3 due to the effect of the counterweight block 64. The part with the counterweight block 64 will always be close to the ground. Then the annular filter 6 can rotate relative to the annular cavity 3. In addition, the position of the counterweight block 64 is adjusted, which will change the position of the annular filter 6 close to the ground, thereby avoiding the deposition of dirt on the annular filter 6 close to the ground.

[0061] Furthermore, it also includes an air jet assembly 7 , which is arranged on the drilling rig body 1 and located on one side of the annular cavity 3 .

[0062] In this embodiment, the jet assembly 7 is arranged on the drilling rig body 1, and is located on one side of the annular cavity 3. When cleaning the drill rod 2, the jet assembly 7 can spray high-pressure gas onto the surface of the drill rod 2 to assist in cleaning the area around the drill rod. The high-pressure gas can blow away stubborn dust and dirt nearby, further improving the cleaning effect of the drill rod 2.

[0063] Furthermore, the jet assembly 7 includes a plurality of nozzles 71 , which are arranged around the circumference of the drill pipe 2 . There are two jet assemblies 7 , which are respectively located on both sides of the annular cavity 3 .

[0064] In this embodiment, during the cleaning of the drill rod 2, the two jet assemblies 7 can spray high-pressure gas from different directions to the surface of the drill rod 2 to ensure that the spiral groove 21 and its surrounding areas can be fully cleaned. This all-round jet design greatly improves the efficiency and quality of the cleaning work of the spiral groove 21. The jet assemblies 7 located on both sides of the annular cavity 3 both spray toward the center of the annular cavity 3, so that the dust generated will be sucked into the annular cavity 3 by the inner vent 34. At the same time, the airflows generated by the jet assemblies 7 on both sides collide with each other, so that when in the annular cavity 3, the speed is reduced and moves toward the direction close to the inner vent 34, which is more convenient for the inner vent 34 to suck in dust.

[0065] Furthermore, there are several elastic telescopic parts 51, the number of which is the same as the number of spiral grooves 21 on the drill rod 2. The elastic telescopic parts 51 are located on one side of the cleaning part 4. The elastic telescopic parts 51 are provided with a second cleaning part 53. The elastic telescopic parts 51 are circumferentially slidably arranged along the annular inner wall 32. The elastic telescopic parts 51 are provided with a limit part, which is used to limit the position of the elastic telescopic parts 51.

[0066] In this embodiment, a corresponding number of elastic telescopic parts 51 are set according to the number of spiral grooves 21 on the drill rod 2, so that each elastic telescopic part 51 can slide in each spiral groove 21 to clean each spiral groove 21. In addition, it can provide more sufficient force for the rotation of the annular cavity 3. In addition, the elastic telescopic part 51 slides on the annular inner wall 32, and can slide and be fixed to a suitable position according to the position of the spiral groove 21, which is very convenient.

[0067] The free end of the elastic telescopic member 51 is provided with a wheel body, which is used to slide on the surface of the drill rod 2. In addition, the cleaning member 4 and the second cleaning member 53 mentioned above are both cleaning brushes. The external air vent 33 can be connected to the external exhaust fan, and the exhaust fan is used to extract air from the annular cavity 3 to generate negative pressure, thereby achieving the effect of air suction through the internal air vent 34.

[0068] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A crawler directional drilling rig for coal mines, characterized in that: include, A drilling rig body (1), the drilling rig body (1) being used for performing drilling operations after a drill rod (2) is installed, the drill rod (2) having a spiral groove (21) on a side wall thereof, an annular cavity (3), the annular cavity (3) being rotatably arranged on the drilling rig body (1), the annular cavity (3) being used to be sleeved outside the drill rod (2), the annular cavity (3) comprising an annular outer wall (31) and an annular inner wall (32), the annular inner wall (32) being close to the drill rod (2), the annular outer wall (31) being provided with an outer vent hole (33), the annular inner wall (32) being provided with an inner vent hole (34), a cleaning member (4), the cleaning member (4) being arranged on the annular inner wall (32), the cleaning member (4) being used to clean the drill rod (2), There are a plurality of the outer vent holes (33) and the inner vent holes (34), the plurality of the outer vent holes (33) are evenly arranged along the circumference of the annular outer wall (31), and the plurality of the inner vent holes (34) are evenly arranged along the circumference of the annular inner wall (32). an annular filter screen (6), the annular filter screen (6) being arranged in the annular cavity (3), An annular groove (61) is provided on the inner wall of the annular filter (6), an annular cavity (62) is formed between the annular groove (61) and the annular inner wall (32), and the annular cavity (62) is communicated with the inner vent hole (34).

2. A crawler directional drilling rig for coal mines according to claim 1, characterized in that: Also includes, An elastic telescopic member (51), one end of the elastic telescopic member (51) being arranged on the annular inner wall (32), and the other end of the elastic telescopic member (51) being in contact with the side wall of the drill rod (2) and continuously pressing the side wall of the drill rod (2).

3. A crawler directional drilling rig for coal mines according to claim 2, characterized in that: Also includes, A second cleaning member (53), the second cleaning member (53) being arranged on the elastic telescopic member (51), the free end of the second cleaning member (53) being close to the side wall of the drill rod (2), the second cleaning member (53) being used to clean the spiral groove (21), and a gap (54) being provided between the second cleaning member (53) and the cleaning member (4).

4. A crawler directional drilling rig for coal mines according to claim 1, characterized in that: The annular filter screen (6) is rotatably disposed in the annular cavity (3).

5. A crawler directional drilling machine for coal mines according to claim 4, characterized in that: Also includes, an annular guide rail (63), wherein the annular guide rail (63) is arranged in the annular groove (61), A counterweight block (64), wherein the counterweight block (64) is slidably disposed on the annular guide rail (63).

6. The crawler directional drilling rig for coal mine according to claim 1, characterized in that: Also includes, An air jet assembly (7), wherein the air jet assembly (7) is arranged on the drilling rig body (1), and the air jet assembly (7) is located on one side of the annular cavity (3).

7. A crawler directional drilling machine for coal mines according to claim 6, characterized in that: The jet assembly (7) comprises a plurality of jet heads (71), wherein the plurality of jet heads (71) are arranged around the circumference of the drill rod (2). There are two jet assemblies (7), and the two jet assemblies (7) are respectively located on two sides of the annular cavity (3).

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