Device for accurately drilling roadway working face

Abstract

The utility model discloses a device for accurately drilling a working face of a roadway, which comprises a working face fitting plate, a first clamping rod, a positioning plate, a second clamping rod, a first drilling positioning ring and a second drilling positioning ring, when the device is used, a drill rod firstly extends into the second drilling positioning ring and then extends into the first drilling positioning ring to drill the working face; the axis of the first drilling hole positioning ring and the axis of the second drilling hole positioning ring coincide with the axis of a to-be-drilled hole, then the axis of the drilling rod and the axis of the to-be-drilled hole coincide all the time under limiting of the first drilling hole positioning ring and the second drilling hole positioning ring, and drilling is completed according to a preset azimuth angle and a preset dip angle. During drilling, a drill hole penetrates through the first drilling positioning ring and the second drilling positioning ring, so that the azimuth angle and the inclination angle of the drill rod are the same as those of a preset drill hole, the deviation between the actual angle of the obtained drill hole and the set angle is greatly reduced, and the production requirement is met.

Description

Technical Field

[0001] The utility model belongs to the field of coal mine production, and particularly relates to a device for accurately drilling a roadway working face. Background Technique

[0002] During the construction of a borehole in an excavation working face, there are often large deviations between the designed angle and the construction angle of the borehole, and different degrees of deviation occur in the opening position according to the magnitude of the coal seam firmness coefficient, resulting in the borehole not being constructed according to the design. When the outburst prevention officer conducts the outburst danger prediction of the working face, due to the borehole not being constructed according to the design, the measured data of the outburst prevention index is inaccurate and there are errors in the data. According to the "Determination Standards for Major Hidden Dangers in Coal Mines", it is determined as a major hidden danger, and the company will face high fines.

[0003] In the prior art, simple measurement is carried out at the beginning of drilling, and then direct drilling is carried out. During the continuous shaking of the drill pipe, the worker holding the drill pipe will cause the drill pipe to deviate, resulting in a large deviation between the set angle and the actual angle during the borehole construction process. Content of the Utility Model

[0004] The purpose of the utility model is to provide a device for accurately drilling a roadway working face to solve the problem of large deviation between the set angle and the actual angle during the borehole construction process.

[0005] The utility model adopts the following technical solutions: A device for accurately drilling a roadway working face, comprising:

[0006] A working face fitting plate, which is horizontally arranged, the rear side of which is used to fit on the roadway working face, and the upper side of which is provided with a first positioning groove from top to bottom;

[0007] A first clamping rod, which is vertically arranged, and the lower end of which extends into the first positioning groove from top to bottom and is clamped;

[0008] A positioning plate, which is horizontally arranged, the upper side of which is provided with a second positioning groove from top to bottom. The right end of the positioning plate is integrally connected with the right end of the working face fitting plate, and the left end of the positioning plate is integrally connected with the left end of the working face fitting plate through a side wall connecting plate. The positioning plate, the working face fitting plate, and the side wall connecting plate cooperate with each other to form a right-angled triangle structure; the left side of the side wall connecting plate is used to abut against the roadway side wall and is perpendicular to the working face fitting plate;

[0009] A second clamping rod, which is vertically arranged, and the lower end of which extends into the second positioning groove from top to bottom and is clamped;

[0010] A first drilling positioning ring, the lower side of which is fixedly connected with the upper end of the first clamping rod;

[0011] The second drilling positioning ring is fixedly connected to the upper end of the second clamping rod at its lower side; the drill pipe first extends into the second drilling positioning ring and then into the first drilling positioning ring to drill the working face. The axes of the first drilling positioning ring and the second drilling positioning ring coincide with the axis of the drilling hole to be opened. Thus, under the limitation of the first drilling positioning ring and the second drilling positioning ring, the axis of the drill pipe always coincides with the axis of the drilling hole to be opened, and the drilling is completed according to the predetermined azimuth angle and inclination angle.

[0012] Further, the lower ends of the first clamping rod and the second clamping rod are respectively clamped in the first positioning groove and the second positioning groove through a rotation mechanism, so that the first clamping rod and the second clamping rod can rotate along their axes respectively, thus ensuring that the axes of the first drilling positioning ring and the second drilling positioning ring coincide.

[0013] Further, the cross-section in the first positioning groove or the second positioning groove is inverted "T" shaped;

[0014] The rotation mechanism includes:

[0015] A limiting plate, the two ends of which respectively extend into the first positioning groove or the second positioning groove; a rotating blind hole is opened on its upper wall from top to bottom;

[0016] A clamping platform, the lower end of which is located in the rotating blind hole, and the upper end of which is fixedly connected to the lower end of the first clamping rod or the second clamping rod. The clamping platform is columnar, and a clamping groove is opened along the outer wall of the middle part thereof;

[0017] A clamping plate, which is "L" shaped. The horizontal section thereof is used to extend into the clamping groove, and the vertical section thereof extends downward and is fixedly connected to the upper side of the limiting plate. A positioning hole is penetrated through from top to bottom near the free end of the horizontal section of the clamping plate;

[0018] A positioning column, which is arranged vertically. The lower end of the positioning column passes through the positioning hole and abuts against the upper side of the limiting plate, so that the free end of the horizontal section of the clamping plate is clamped in the clamping groove, thus limiting the clamping platform to prevent the clamping platform from rotating. The positioning column is used to loosen the limiting plate so that the clamping platform can rotate freely, and when the axes of the first drilling positioning ring and the second drilling positioning ring coincide, it abuts against the limiting plate again to limit the clamping platform.

[0019] Further, a first protractor is sleeved on the first clamping rod, and the first protractor is used to measure the azimuth angle of the drill pipe.

[0020] Further, a second protractor is fixed on the upper side of the side wall connecting plate, and the second protractor is used to measure the inclination angle of the drill pipe.

[0021] Further, a scale is arranged on the upper side of the working face attaching plate to determine the distance between the drilling hole and the side wall of the roadway.

[0022] The beneficial effects of the utility model are:

[0023] When the utility model drills a hole, the drill bit passes through the first drilling positioning ring and the second drilling positioning ring, so that the azimuth angle and dip angle of the drill pipe are the same as those of the preset drilling hole, and thus the deviation between the actual angle of the obtained drilling hole and the set angle is greatly reduced, meeting the production requirements;

[0024] When the utility model is in use, the rear side of the working surface fitting plate is abutted against the working surface of the roadway, the left side of the side wall connecting plate is abutted against the side wall of the roadway, and then the position of the drilling hole is determined through the scale of the working surface fitting plate. Then, the first clamping rod and the first drilling positioning ring are slid along the first positioning groove to a position corresponding to the position of the drilling hole for fixation. Then, according to the azimuth angle of the predetermined drilling hole, the second clamping rod and the second drilling positioning ring are slid along the second positioning groove to the predetermined position, that is, at this time, the connection line of the first drilling positioning ring and the second drilling positioning ring coincides with the azimuth angle of the drilling hole; Then, keep the rear side of the side wall connecting plate abutted against the working surface of the roadway and tilt the side wall connecting plate upward or downward according to the dip angle of the predetermined drilling hole, so that the included angle between the side wall connecting plate and the horizontal plane is equal to the dip angle of the predetermined drilling hole. Finally, the drill pipe is first inserted into the second drilling positioning ring and then into the first drilling positioning ring to drill the working surface;

[0025] The utility model can control the dip angle and azimuth angle of the drill pipe, thereby obtaining a drilling hole with a predetermined dip angle and azimuth angle, and further obtaining a drilling hole with a smaller deviation from the set angle, thereby improving the opening accuracy of the drilling hole;

[0026] The utility model clamps the lower ends of the first clamping rod and the second clamping rod in the first positioning groove and the second positioning groove through a self-rotation mechanism, so that the first clamping rod or the second clamping rod can rotate around its axis, and ensures that the axes of the first drilling positioning ring and the second drilling positioning ring coincide, thereby improving the opening accuracy of the drilling hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a structural schematic diagram of the utility model;

[0028] Figure 2 is a structural schematic diagram of the self-rotation mechanism of the utility model.

[0029] Wherein: 10, working surface fitting plate; 11, first clamping rod; 12, positioning plate; 13, second clamping rod; 14, first drilling positioning ring; 15, second drilling positioning ring; 16, first positioning groove; 17, second positioning groove; 18, limiting plate; 19, clamping platform; 20, clamping plate; 21, positioning column; 22, clamping groove; 23, side wall connecting plate. DETAILED DESCRIPTION OF THE INVENTION

[0030] The utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more. The "orientation" in the present utility model is described based on the Figure 1 orientation when the present utility model is in the

[0032] The present utility model discloses a device for accurately drilling a roadway working face, as Figure 1 shown, which includes a working face fitting plate 10, a first clamping rod 11, a positioning plate 12, a second clamping rod 13, a first drilling positioning ring 14, and a second drilling positioning ring 15.

[0033] The working face fitting plate 10 is horizontally arranged, and the rear side of the working face fitting plate 10 is used to fit on the roadway working face. A first positioning groove 16 is opened from top to bottom on the upper side of the working face fitting plate 10; the first clamping rod 11 is vertically arranged, and the lower end of the first clamping rod 11 extends into the first positioning groove 16 from top to bottom and is clamped.

[0034] The positioning plate 12 is horizontally arranged. A second positioning groove 17 is opened from top to bottom on the upper side of the positioning plate 12. The right end of the positioning plate 12 is integrally connected to the right end of the working face fitting plate 10. The left end of the positioning plate 12 is integrally connected to the left end of the working face fitting plate 10 through a side wall connecting plate 23. The positioning plate 12, the working face fitting plate 10, and the side wall connecting plate 23 cooperate with each other to form a right triangle-shaped structure; the left side of the side wall connecting plate 23 is used to abut against the roadway side wall and is perpendicular to the working face fitting plate 10.

[0035] The second clamping rod 13 is vertically arranged, and the lower end of the second clamping rod 13 extends into the second positioning groove 17 from top to bottom and is clamped; the lower side of the first drilling positioning ring 14 is fixedly connected to the upper end of the first clamping rod 11.

[0036] The lower side of the second drilling positioning ring 15 is fixedly connected to the upper end of the second clamping rod 13; the second drilling positioning ring 15 is used for the drill rod to first extend into the second drilling positioning ring 15 and then into the first drilling positioning ring 14, and then drill holes in the working face. The axes of the first drilling positioning ring 14 and the second drilling positioning ring 15 coincide with the axis of the drill hole to be opened. Thus, under the limitation of the first drilling positioning ring 14 and the second drilling positioning ring 15, the axis of the drill rod always coincides with the axis of the drill hole to be opened, and the drilling is completed according to the predetermined azimuth and inclination angle.

[0037] The lower ends of the first clamping rod 11 and the second clamping rod 13 are both clamped in the first positioning groove 16 and the second positioning groove 17 through a self-rotation mechanism. Thus, the first clamping rod 11 and the second clamping rod 13 can rotate along their axes respectively, which ensures that the axes of the first drilling positioning ring 14 and the second drilling positioning ring 15 coincide.

[0038] The cross-section in the first positioning groove 16 or the second positioning groove 17 is inverted "T" shaped; and as Figure 2 shown, the self-rotation mechanism includes: a limiting plate 18, a clamping platform 19, a clamping plate 20, and a positioning column 21.

[0039] Both ends of the limiting plate 18 extend into the first positioning groove 16 or the second positioning groove 17 respectively; a rotating blind hole is opened from top to bottom on the upper wall of the limiting plate 18; the lower end of the clamping platform 19 is located in the rotating blind hole, the upper end of the clamping platform 19 is fixedly connected to the lower end of the first clamping rod 11 or the second clamping rod 13, the clamping platform 19 is columnar, and a clamping groove 22 is opened along the outer wall in the middle of it.

[0040] The clamping plate 20 is "L" shaped. The horizontal section of the clamping plate 20 is used to extend into the clamping groove 22, the vertical section of the clamping plate 20 extends downward and is fixedly connected to the upper side of the limiting plate 18, and a positioning hole is penetrated from top to bottom near the free end of the horizontal section of the clamping plate 20.

[0041] The positioning column 21 is arranged vertically. The lower end of the positioning column 21 passes through the positioning hole and abuts against the upper side of the limiting plate 18. Thus, the free end of the horizontal section of the clamping plate 20 is clamped in the clamping groove 22, and the clamping platform 19 is limited to prevent the clamping platform 19 from rotating. The positioning column 21 is used to loosen the limiting plate 18 so that the clamping platform 19 can rotate freely, and when the axes of the first drilling positioning ring 14 and the second drilling positioning ring 15 coincide, it abuts against the limiting plate 18 again to limit the clamping platform 19.

[0042] A first protractor is sleeved on the first clamping rod 11, and the first protractor is used to measure the azimuth angle of the drill rod. A second protractor is fixed on the upper side of the side wall connecting plate 23, and the second protractor is used to measure the inclination angle of the drill rod. A scale is arranged on the upper side of the working face fitting plate 10, so as to determine the distance between the drill hole and the side wall of the roadway.

[0043] When the utility model is in use, the rear side of the working surface attaching plate 10 is abutted against the working surface of the roadway, the left side of the side wall connecting plate 23 is abutted against the side wall of the roadway, and then the position of the drill hole is determined through the scale of the working surface attaching plate 10. Then, the first clamping rod 11 and the first drill hole positioning ring 14 are slid along the first positioning groove 16 to a position corresponding to the position of the drill hole for fixation. Then, according to the azimuth angle of the predetermined drill hole, the second clamping rod 13 and the second drill hole positioning ring 15 are slid along the second positioning groove 17 to a predetermined position, that is, at this time, the connection line between the first drill hole positioning ring 14 and the second drill hole positioning ring 15 coincides with the azimuth angle of the drill hole. Then, the rear side of the side wall connecting plate 23 is abutted against the working surface of the roadway and remains stationary, and the side wall connecting plate 23 is tilted upward or downward according to the inclination angle of the predetermined drill hole, so that the included angle between the side wall connecting plate 23 and the horizontal plane is equal to the inclination angle of the predetermined drill hole. Finally, the drill rod is first inserted into the second drill hole positioning ring 15 and then into the first drill hole positioning ring 14 to drill the working surface.

[0044] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A device for accurately drilling holes in a tunnel working surface, characterized in that: include: A working surface bonding plate (10) is arranged horizontally, the rear side of which is used to be bonded to the working surface of the tunnel, and the upper side of which is provided with a first positioning groove (16) from top to bottom; A first clamping rod (11) is arranged vertically, and its lower end extends from top to bottom into the first positioning groove (16) and is clamped; The positioning plate (12) is arranged horizontally, and a second positioning groove (17) is provided on its upper side from top to bottom. The right end of the positioning plate (12) is integrally connected to the right end of the working surface bonding plate (10), and the left end of the positioning plate (12) is integrally connected to the left end of the working surface bonding plate (10) through the side wall connecting plate (23). The positioning plate (12), the working surface bonding plate (10), and the side wall connecting plate (23) cooperate with each other to form a right-angled triangle structure; the left side of the side wall connecting plate (23) is used to abut against the side wall of the tunnel and is perpendicular to the working surface bonding plate (10); A second clamping rod (13) is arranged vertically, and its lower end extends from top to bottom into the second positioning groove (17) and is clamped; A first drilling positioning ring (14), the lower side of which is fixedly connected to the upper end of the first clamping rod (11); The second drilling positioning ring (15) has its lower side fixedly connected to the upper end of the second clamping rod (13); the drill rod is first extended into the second drilling positioning ring (15) and then extended into the first drilling positioning ring (14) to drill the working surface, the axis of the first drilling positioning ring (14) and the axis of the second drilling positioning ring (15) are both coincident with the axis of the borehole to be drilled, and then, under the limitation of the first drilling positioning ring (14) and the second drilling positioning ring (15), the axis of the drill rod is always coincident with the axis of the borehole to be drilled, and the drilling is completed according to the predetermined azimuth and inclination angles.

2. A device for accurately drilling a tunnel working surface according to claim 1, characterized in that: The lower ends of the first clamping rod (11) and the second clamping rod (13) are clamped in the first positioning groove (16) and the second positioning groove (17) through a rotation mechanism, so that the first clamping rod (11) and the second clamping rod (13) can rotate along their axes, thereby ensuring that the axes of the first drilling positioning ring (14) and the second drilling positioning ring (15) coincide with each other.

3. A device for accurately drilling a tunnel working surface according to claim 2, characterized in that: The cross section of the first positioning groove (16) or the second positioning groove (17) is an inverted "T" shape; The self-rotation mechanism comprises: The limiting plate (18) has two ends extending into the first positioning groove (16) or the second positioning groove (17) respectively; and a rotation blind hole is opened on the upper wall from top to bottom; A clamping platform (19), the lower end of which is located in the rotating blind hole, and the upper end of which is fixedly connected to the lower end of the first clamping rod (11) or the second clamping rod (13); the clamping platform (19) is columnar, and a clamping groove (22) is provided in the middle along the outer wall thereof; The card plate (20) is L-shaped, with a horizontal section extending into the card slot (22), and a vertical section extending downward and fixedly connected to the upper side of the limit plate (18), and a positioning hole is provided through the free end of the horizontal section of the card plate (20) from top to bottom; The positioning column (21) is vertically arranged, and its lower end passes through the positioning hole and abuts against the upper side of the limiting plate (18), thereby causing the free end of the horizontal section of the clamping plate (20) to be clamped in the clamping groove (22), thereby limiting the clamping table (19) to prevent the clamping table (19) from rotating. The positioning column (21) is used to loosen the limiting plate (18) so that the clamping table (19) can rotate freely, and when the axes of the first drilling positioning ring (14) and the second drilling positioning ring (15) coincide, it abuts against the limiting plate (18) again to limit the clamping table (19).

4. A device for accurately drilling a tunnel working surface according to claim 1, characterized in that: The first clamping rod (11) is sleeved with a first protractor, and the first protractor is used to measure the azimuth angle of the drill rod.

5. A device for accurately drilling a tunnel working surface according to claim 1, characterized in that: A second protractor is fixed on the upper side of the side wall connecting plate (23), and the second protractor is used to measure the inclination angle of the drill rod.

6. A device for accurately drilling a tunnel working surface according to claim 1, characterized in that: The upper side of the working surface bonding plate (10) is provided with a scale to determine the distance between the drill hole and the side wall of the tunnel.

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