Reaming device for underground coal mine geological exploration

Abstract

The utility model discloses a broaching device for underground coal mine geological exploration, which belongs to the technical field of coal mines and is characterized in that a central hole is arranged at the central position of a bottom plate of the device, symmetrical support columns are fixedly connected to the surface of the bottom plate of the device, a lifting plate is slidably connected to the surfaces of the support columns, and symmetrical telescopic rods and motors are fixedly mounted on the surface of the lifting plate; according to the reaming device for underground coal mine geological exploration, through the arrangement of the multiple reaming heads, the inserting columns and the inserting holes, the reaming heads can directly move downwards to be connected with the drill bit into a whole in the reaming process, the reaming convenience is greatly improved, the drilling efficiency is improved, and the drilling efficiency is improved. And meanwhile, the use stability of the drill bit assembly is guaranteed, through the arranged storage rod and a bearing arranged on the reaming head, storage and placement of the reaming head are facilitated, shaking of the drill rod can be limited, and the working stability of the drill rod is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mines, and more specifically to a hole expanding device for underground coal mine geological exploration. Background Art

[0002] Coal mines are areas where humans mine coal resources in coal-rich mining areas. When people conduct coal mining, they generally use reaming devices to drill holes on the ground of the coal mine for exploration. However, when the commonly used reaming devices need to reame holes, the outer diameter of the drill reaming assembly needs to be changed, which makes the connection strength with the drill bit insufficient, easily leads to damage, reduces the stability of use, and the longer drill rod is prone to shaking during rotation, thereby reducing its rotational stability.

[0003] For example, announcement No. CN117328815A discloses a hole expanding device for underground coal mine geological exploration, comprising: a frame-shaped plate, two support rods are fixedly installed on the top of the frame-shaped plate, a cross plate is fixedly installed on the top of the two support rods, two electric push rods are fixedly installed on the bottom of the cross plate, a connecting plate is fixedly installed on the output shafts of the two electric push rods, and a rotating motor is fixedly installed on the bottom of the connecting plate.

[0004] It can be seen from the above-mentioned public scheme that the entire drill bit is expanded after the outer diameter is changed by a truncated cone-shaped push plate arranged on the outside. The connection with the drill bit is cumbersome and cannot be connected as a whole, which reduces its strength and is easy to be damaged during use. In addition, when the motor output shaft or the rotating column is long, it is easy to shake due to drilling or expanding during rotation, which makes the drilling or expanding position inaccurate, reduces the drilling or expanding quality, and reduces the stability of the rotating column. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a reaming device for underground coal mine geological exploration. The reaming device for underground coal mine geological exploration, through the provision of multiple reaming heads and plug-in columns and plug-in holes, can directly move downward to be connected with the drill bit during reaming, thereby greatly improving the convenience of reaming while ensuring the stability of the drill bit assembly. In addition, through the provision of a storage rod and a bearing provided on the reaming head, not only the storage and placement of the reaming head is convenient, but also the vibration of the drill rod can be limited, thereby improving the working stability of the drill rod.

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] A hole-reaming device for underground coal mine geological exploration comprises a device bottom plate, a center hole is provided at the center position of the device bottom plate, a symmetrical support column is fixedly connected to the surface of the device bottom plate, a lifting plate is slidably connected to the surface of the support column, a symmetrical telescopic rod and a motor are fixedly installed on the surface of the lifting plate, the other end of the telescopic rod is fixedly connected to the top plate, a drill rod is provided at the output end of the motor, a drill bit is fixedly installed at one end of the drill rod, a plug-in column is provided at one end of the drill bit, a storage rod is fixedly connected to the bottom of the lifting plate, and a first reaming head, a second reaming head and a third reaming head are slidably sleeved on the surface of the storage rod. The end faces of the first reaming head, the second reaming head and the third reaming head are all provided with connecting holes and plug-in holes, and the center positions of the first reaming head, the second reaming head and the third reaming head are all provided with bearings. The reaming device for underground coal mine geological exploration, through the multiple reaming heads and plug-in columns and plug-in holes, can directly move downward to connect with the drill bit during reaming, thereby greatly improving the convenience of reaming and ensuring the stability of the drill bit assembly. In addition, the storage rod and the bearings provided on the reaming head not only facilitate the storage and placement of the reaming head, but also limit the shaking of the drill rod, thereby improving the working stability of the drill rod.

[0008] Furthermore, the drill bit, the first reaming head, the second reaming head and the third reaming head are all provided with a conical surface, and the surface of the conical surface is provided with teeth. The teeth provided on the drill bit, the first reaming head, the second reaming head and the third reaming head are spiral, so that the drill bit and the third reaming head, the second reaming head and the first reaming head are spliced ​​into a complete cone, thereby ensuring the drilling and reaming strength.

[0009] Furthermore, an axial hole is provided at the center position of the inner ring of the bearing, and the drill rod passes axially through the axial hole. The inner diameter of the axial hole is larger than the outer diameter of the drill rod, and contacts the inner wall of the axial hole when the drill rod shakes, thereby causing the inner ring of the bearing to rotate, while limiting the vibration amplitude of the drill rod, thereby ensuring the position accuracy of drilling and reaming.

[0010] Furthermore, there are three storage rods, which are evenly spaced and arranged in a ring shape with the drill rod as the center. One end of the storage rod is threadedly connected to a knob. The three storage rods can ensure the stability of the storage position of the reaming head.

[0011] Furthermore, an anti-slip sleeve is provided at one end of the knob, a threaded hole is provided at the center position of the knob and the anti-slip sleeve, and a screw is provided at one end of the storage rod to facilitate the user to manually rotate the knob.

[0012] Furthermore, the number of the connecting holes and the plug-in holes are both three, and they are all equidistantly spaced in a ring shape with the shaft hole as the center, thus ensuring the stability of storage and splicing.

[0013] Furthermore, there are three plug-in columns, and the surfaces of the plug-in columns are all provided with external threads, so that the expansion heads can be fastened together by nuts after splicing.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] (1) The present invention provides multiple reaming heads, plug-in columns, and plug-in holes, which can be directly moved downward to be connected with the drill bit during reaming, thereby greatly improving the convenience of reaming and ensuring the stability of the drill bit assembly.

[0016] (2) The present invention provides a storage rod and a bearing for the reaming head, which not only facilitates the storage and placement of the reaming head, but also limits the vibration of the drill rod, thereby improving the working stability of the drill rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0018] Figure 2 It is a top view of the first reaming head structure of the utility model;

[0019] Figure 3 This is a top view of the drill bit structure of the utility model;

[0020] Figure 4 It is a front view of the storage rod structure of the utility model.

[0021] Description of the numbers in the figure:

[0022] 1 device bottom plate, 11 center hole, 12 support column, 13 top plate, 2 lifting plate, 21 motor, 22 drill rod, 23 drill bit, 24 plug column, 25 telescopic rod, 3 storage rod, 31 knob, 32 anti-slip sleeve, 4 first reaming head, 41 connecting hole, 42 plug hole, 43 bearing, 44 shaft hole, 5 second reaming head, 6 third reaming head. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1

[0025] See also Figure 1-4A hole-enlarging device for underground coal mine geological exploration comprises a device bottom plate 1, a center hole 11 is arranged at the center position of the device bottom plate 1, a symmetrical support column 12 is fixedly connected to the surface of the device bottom plate 1, a lifting plate 2 is slidably connected to the surface of the support column 12, a symmetrical telescopic rod 25 and a motor 21 are fixedly installed on the surface of the lifting plate 2, the telescopic rod 25 is a hydraulic telescopic column or an electric telescopic column, which is convenient for driving the lifting plate 2 to move up and down, the other end of the telescopic rod 25 is fixedly connected to the top plate 13, the motor 21 is a forward and reverse motor, which belongs to the prior art, a drill rod 22 is arranged at the output end of the motor 21, a drill bit 23 is fixedly installed at one end of the drill rod 22, the drill bit 23 is used for drilling, a plug-in column 24 is arranged at one end of the drill bit 23, and the number of the plug-in columns 24 is three , and the surfaces are all provided with external threads, which are convenient for the expansion heads to be fastened together through nuts after splicing. The bottom of the lifting plate 2 is fixedly connected with a storage rod 3, and the surface of the storage rod 3 is slidably sleeved with a first expansion head 4, a second expansion head 5 and a third expansion head 6. The outer diameters of the first expansion head 4, the second expansion head 5 and the third expansion head 6 decrease from top to bottom, which is convenient for expansion operations of different sizes. The end faces of the first expansion head 4, the second expansion head 5 and the third expansion head 6 are all provided with connecting holes 41 and plug-in holes 42. The number of the connecting holes 41 and the plug-in holes 42 is three, and they are all centered on the shaft hole 44 and are divided into circular sections with equal intervals, which ensures the stability of storage and splicing. The center positions of the first expansion head 4, the second expansion head 5 and the third expansion head 6 are all provided with bearings 43.

[0026] The drill bit 23, the first reaming head 4, the second reaming head 5 and the third reaming head 6 are all provided with a conical surface, and the surface of the conical surface is provided with teeth. The teeth provided on the drill bit 23, the first reaming head 4, the second reaming head 5 and the third reaming head 6 are spiral, so that the drill bit 23 and the third reaming head 6, the second reaming head 5 and the first reaming head 4 are spliced ​​into a complete cone, thereby ensuring the drilling and reaming strength. An axial hole 44 is provided at the center position of the inner ring of the bearing 43, and the drill rod 22 axially passes through the axial hole 44. The inner diameter of the axial hole 44 is larger than the outer diameter of the drill rod 22. When the drill rod 22 shakes, it contacts the inner wall of the axial hole 44, thereby causing the inner ring of the bearing 43 to rotate, while limiting the shaking amplitude of the drill rod 22, thereby ensuring the position accuracy of drilling and reaming.

[0027] There are three storage rods 3, and they are distributed in a circular shape with equal intervals around the drill rod 22. One end of the storage rod 3 is connected to a knob 31 through a thread. The three storage rods 3 can ensure the stability of the storage position of the reaming head. An anti-slip sleeve 32 is provided at one end of the knob 31. A threaded hole is provided at the center position of the knob 31 and the anti-slip sleeve 32. A screw is provided at one end of the storage rod 3 to facilitate the user to manually rotate the knob 31.

[0028] When the reaming device for underground coal mine geological exploration is used for reaming operation, the knob 31 is first manually removed counterclockwise, and then the third reaming head 6, the second reaming head 5 or the first reaming head 4 is moved downward to connect with the drill bit 23 according to the actual reaming size. The reaming head is moved downward so that the plug-in column 24 is upwardly sleeved with the plug-in hole 42, and then the nut is tightened with the plug-in column 24 clockwise to fix the installation position of the reaming head, and then the drill rod 22 and the drill bit 23 are driven to rotate by the motor 21, thereby driving the reaming head to rotate. The drill bit 23 is rotated and then pushed downward by the telescopic rod 25 to expand the hole. The multiple expanding heads, the plug-in columns 24 and the plug-in holes 42 can be directly moved downward to be connected with the drill bit 23 during expanding the hole, which greatly improves the convenience of expanding the hole and ensures the stability of the drill bit assembly. The storage rod 3 and the bearing 43 set on the expanding head can not only facilitate the storage and placement of the expanding head, but also limit the shaking of the drill rod 22, thereby improving the working stability of the drill rod 22.

[0029] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A hole expansion device for underground coal mine geological exploration, comprising a device bottom plate (1), a center hole (11) is provided at the center position of the device bottom plate (1), and symmetrical support columns (12) are fixedly connected to the surface of the device bottom plate (1), characterized in that: The surface of the support column (12) is slidably connected to a lifting plate (2), and a symmetrical telescopic rod (25) and a motor (21) are fixedly installed on the surface of the lifting plate (2), and the other end of the telescopic rod (25) is fixedly connected to a top plate (13). The output end of the motor (21) is provided with a drill rod (22), and a drill bit (23) is fixedly installed on one end of the drill rod (22), and a plug-in column (24) is provided on one end of the drill bit (23). The bottom of the lifting plate (2) is fixedly connected to a storage rod (3), and the surface of the storage rod (3) is slidably sleeved with a first reaming head (4), a second reaming head (5) and a third reaming head (6). The end surfaces of the first reaming head (4), the second reaming head (5) and the third reaming head (6) are all provided with connecting holes (41) and plug-in holes (42), and the center positions of the first reaming head (4), the second reaming head (5) and the third reaming head (6) are all provided with bearings (43).

2. The hole expanding device for underground coal mine geological exploration according to claim 1, characterized in that: The drill bit (23), the first reaming head (4), the second reaming head (5) and the third reaming head (6) are all provided with a conical surface, and the surface of the conical surface is provided with teeth, and the teeth provided on the drill bit (23), the first reaming head (4), the second reaming head (5) and the third reaming head (6) are spiral.

3. The hole expanding device for underground coal mine geological exploration according to claim 1, characterized in that: An axial hole (44) is provided at the center of the inner ring of the bearing (43), and the drill rod (22) axially passes through the axial hole (44). The inner diameter of the axial hole (44) is greater than the outer diameter of the drill rod (22).

4. The hole expanding device for underground coal mine geological exploration according to claim 1, characterized in that: The number of the storage rods (3) is three, and they are distributed in a ring-shaped manner with equal intervals around the drill rod (22), and one end of the storage rod (3) is connected to a knob (31) via a thread.

5. The hole expanding device for underground coal mine geological exploration according to claim 4, characterized in that: An anti-slip sleeve (32) is provided at one end of the knob (31), threaded holes are provided at the center positions of the knob (31) and the anti-slip sleeve (32), and a screw rod is provided at one end of the storage rod (3).

6. The hole expanding device for underground coal mine geological exploration according to claim 1, characterized in that: The number of the connecting holes (41) and the plug holes (42) are both three, and they are all equidistantly spaced in a ring shape with the shaft hole (44) as the center.

7. The hole expanding device for underground coal mine geological exploration according to claim 1, characterized in that: The number of the plug-in posts (24) is three, and the surfaces of the posts are all provided with external threads.

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