A rotary rock drill

Abstract

This invention discloses a rotary rock drill, comprising a drill body, a propulsion cylinder, a mounting base, an actuator cylinder, a first rotating cylinder, a second rotating cylinder, and a base. The base includes a seat body, a first bearing, and a first drive device. The first rotating cylinder includes a first cylinder body, a first driven gear, a second bearing, and a second drive device. The second rotating cylinder includes a second cylinder body, a second driven gear, and a pressure-bearing body. The mounting base includes a mounting section and a connecting section. The propulsion cylinder and the drill body are sequentially installed in the mounting section from top to bottom. Multiple actuator cylinders are evenly distributed around the outer side of the second cylinder along its axial direction. In this rotary rock drill, both the first and second rotating cylinders can rotate 360°, and their rotation planes are obliquely intersecting. Simultaneously, the mounting base can rotate within a certain range. Therefore, the drill body can rotate to drill holes in all directions around the working face, enabling multi-angle drilling in confined spaces and effectively improving drilling efficiency.

Description

Technical Field

[0001] This invention relates to the field of tunnel and mining machinery and equipment technology, specifically to a rotary rock drill. Background Technology

[0002] A rock drill is a construction device used to drill holes in rock strata. Existing tunnel and mining projects often use rock drills to drill holes in the inner walls of tunnels and roadways, as well as in rocks, in order to install support facilities, place explosives, etc.

[0003] Rock drills generally include handheld rock drills and mechanical carrier rock drills. Handheld rock drills have relatively low working efficiency, while mechanical carrier rock drills have relatively high efficiency. Existing mechanical carrier rock drills include a vehicle carrier, a propulsion beam mounted on the vehicle carrier, and a rock drill body mounted on the propulsion beam. Existing rock drills have the following shortcomings:

[0004] 1. The swing angle of a mechanical carrier rock drill is determined by the swing angle of the propulsion beam. Since the swing angle of the propulsion beam is very small, when encountering a narrow space and when the mechanical carrier rock drill is difficult to move, the propulsion beam cannot swing, which will restrict drilling operations on different sides of the rock mass.

[0005] 2. The propulsion beam is relatively large, and even with slight oscillation, it occupies a lot of space, which is not conducive to performing multiple tasks simultaneously on the same working face. In addition, due to the large size of the propulsion beam, its oscillation takes a long time, which affects the working efficiency of the rock drill.

[0006] 3. For multi-beam rock drills, if the angles of the two push rods cannot be adjusted in a confined space, the two push beams may interfere with each other, thus preventing normal construction. Summary of the Invention

[0007] The present invention aims to provide a rotary rock drill that can adjust the angle of the rock drill to a large scale to adapt to drilling in confined spaces.

[0008] To achieve the above objectives, the present invention provides a rotary rock drill, comprising a rock drill body, a propulsion cylinder, a mounting base, an actuator cylinder, a first rotating cylinder, a second rotating cylinder, and a base;

[0009] The base includes a hollow cylindrical body, a first bearing fixed to the inner wall of the upper end of the body, and a first drive device installed axially inside the body.

[0010] The first rotating cylinder includes a first cylinder body, a first driven tooth circumferentially fixed to the inner wall of the lower end of the first cylinder body, a second bearing circumferentially fixed to the inner wall of the upper end of the first cylinder body, and a second driving device installed inside the first cylinder body and obliquely perpendicular to the axial direction of the first cylinder body. The lower end of the first cylinder body is fastened to the inner wall of the rotating disk of the first bearing. The driving part of the first driving device is driven and engaged with the first driven tooth. The upper end face of the first cylinder body is a chamfered surface. The axial direction of the rotating part of the second bearing is perpendicular to the upper end face of the first cylinder body.

[0011] The second rotating cylinder includes a second cylinder body, a second driven tooth circumferentially fixed to the inner wall of the lower end of the second cylinder body, and a pressure-bearing body fixed to the middle section of the second cylinder body. The lower end of the second cylinder body is fastened to the inner wall of the rotating part of the second bearing. The driving part of the second driving device is driven and engaged with the second driven tooth. The pressure-bearing body has a circular flared groove on the side facing the upper end of the second cylinder body.

[0012] The mounting base includes a cylindrical mounting section and a rod-shaped connecting section. The propulsion cylinder and the rock drill body are installed sequentially from top to bottom in the mounting section, and the propulsion end of the propulsion cylinder is drivenly connected to the rock drill body. The drill rod of the rock drill body extends from the upper end of the mounting section. The free end of the connecting section has a spherical surface, which can be rotatably pressed against a circular flared groove.

[0013] The actuator cylinders are multiple and are evenly arranged on the outer side of the second cylinder body along the axial direction. The main body end of the actuator cylinder is hinged to the outer wall of the second cylinder body, and the piston rod end of the actuator cylinder is hinged to the lower outer wall of the mounting section.

[0014] The aforementioned rotary rock drill can rotate 360° in both the first and second rotating cylinders, and the rotation planes of the first and second rotating cylinders are obliquely intersecting. At the same time, the mounting base can rotate within a certain range. Therefore, the rock drill body can rotate to drill holes in all directions around the working face, realizing multi-angle drilling in narrow spaces and effectively improving drilling efficiency.

[0015] Preferably, the first driving device includes a first fixed plate, a first hydraulic motor, and a first driving gear. The first fixed plate is fixed to the inner wall of the first cylinder along the radial direction of the first cylinder. The first hydraulic motor is fixed to the first fixed plate, and the first driving gear is mounted on the drive rod of the first hydraulic motor.

[0016] Preferably, the angle between the oblique cut surface and the central axis of the first cylinder is 35°-55°.

[0017] Preferably, the outer wall of the rock drill body is provided with a plurality of grooves extending axially along the base body in a uniform manner in the circumferential direction, and the inner wall of the mounting base is provided with sliding strips that cooperate with the grooves one by one.

[0018] Preferably, it also includes a buffer water tank and multiple spray pipes. The buffer water tank is annular and installed at the upper port of the base. The buffer water tank has multiple water outlets on the side facing the drill rod, and each water outlet is equipped with a spray pipe.

[0019] Preferably, the spray pipe includes a mist outlet pipe, a connecting pipe, and a compressor. The connecting pipe consists of at least two pipes that are sequentially and coaxially slidably connected. The mist outlet pipe is fixed to the foremost connecting pipe. Each connecting pipe has an end cap at its port. A compressor is sandwiched between two adjacent connecting pipes. The two ends of the compressor are respectively fixed to the two end caps of the two adjacent mist outlet pipes that are slidably connected.

[0020] Preferably, the free end of the mist outlet pipe is a closed end, and the pipe wall of the mist outlet pipe is provided with a plurality of spray holes facing the drill rod and obliquely intersecting the connecting pipe.

[0021] Preferably, the spray hole density on the side of the mist outlet pipe facing the drill rod is greater than the spray hole density on the side away from the drill rod.

[0022] Preferably, the free end of the mist outlet pipe has a hemispherical structure.

[0023] Preferably, the bottom of the mounting base is provided with a slide that slides in conjunction with the push beam.

[0024] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below.

[0026] Figure 1 This is a schematic diagram of the structure of the rotary rock drill according to Embodiment 1 of the present invention;

[0027] Figure 2 yes Figure 1 Internal structure diagram;

[0028] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 for Figure 2 Schematic diagram of the structure of the central spray pipe;

[0030] Figure 5 This is a schematic diagram of the installation of the rotary rock drill according to Embodiment 2 of the present invention.

[0031] In the attached diagram,

[0032] Base 1, seat body 11, first bearing 12, first fixing plate 13, first hydraulic motor 14, first driving gear 15, first rotating cylinder 2, first cylinder body 21, first driven gear 22, second bearing 23, second fixing plate 24, second hydraulic motor 25, second driving gear 26, second rotating cylinder 3, second cylinder body 31, second driven gear 32, pressure bearing body 33, circular flared groove 331, actuating cylinder 4, mounting seat 5, mounting section 51, connecting section 52, spherical surface 53, slide bar 54, rock drill body 61, drill rod 62, propulsion cylinder 63, buffer water tank 71, spray pipe 72, mist outlet pipe 721, connecting pipe 722, compression component 723, end cap 724, spray hole 725, hemispherical dust cover 73, propulsion beam 8, slide seat 9. Detailed Implementation

[0033] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. 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.

[0034] Please see Figures 1 to 5 This embodiment discloses a rotary rock drill, including a rock drill body 61, a propulsion cylinder 63, a mounting base 5, an actuating cylinder 4, a first rotating cylinder 2, a second rotating cylinder 3, and a base 1.

[0035] like Figure 1 and Figure 2 As shown, the base 1 includes a seat body 11, a first bearing 12, and a first driving device. The seat body 11 has a hollow cylindrical structure. The first bearing 12 is fixed to the inner wall of the upper end of the seat body 11, and the first driving device is installed axially inside the seat body 11. The first rotating cylinder 2 includes a first cylinder body 21, a first driven gear 22, a second bearing 23, and a second driving device. The lower end of the first cylinder body 21 is fixedly fitted inside the rotating part of the first bearing 12. The first driven gear 22 is circumferentially fixed to the outer wall of the lower end of the first cylinder body 21, and the driving part of the first driving device is driven to cooperate with the first driven gear 22.

[0036] In this embodiment, the first driving device includes a first fixed plate 13, a first hydraulic motor 14, and a first driving gear 15. The first fixed plate 13 is fixed to the inner wall of the first cylinder 21 along the radial direction of the first cylinder 21. The first hydraulic motor 14 is fixed on the first fixed plate 13. The first driving gear 15 is mounted on the drive rod of the first hydraulic motor 14. The first hydraulic motor 14 drives the first driving gear 15 to rotate and drives the first cylinder 21 and the first driven gear 22 to rotate, thereby enabling the first rotating cylinder 2 to rotate 360°.

[0037] like Figure 2 and Figure 3 As shown, the upper end face of the first cylinder 21 is a beveled surface. The second bearing 23 is installed on the inner side of the upper end of the first cylinder 21. The fixing part of the second bearing 23 is an irregular structure adapted to the upper end of the first cylinder 21. The axial direction of the rotating part of the second bearing 23 is perpendicular to the upper end face of the first cylinder 21. The second driving device is fixed inside the first cylinder 21 and parallel to the axial direction of the second bearing 23. The second rotating cylinder 3 includes a second cylinder 31, a second driven tooth 32, and a pressure bearing 33. The lower end of the second cylinder 31 is fastened to the inner wall of the rotating part of the second bearing 23. The driving part of the second driving device is driven and engaged with the second driven tooth 32.

[0038] In this embodiment, the second driving device includes a second fixed plate 24, a second hydraulic motor 25, and a second driving gear 26. The second fixed plate 24 is fixed to the inner wall of the second cylinder 31 along the radial direction of the second cylinder 31. The second hydraulic motor 25 is fixed on the second fixed plate 24. The second driving gear 26 is mounted on the drive rod of the second hydraulic motor 25. The second hydraulic motor 25 drives the second driving gear 26 to rotate and drives the second driven gear 32 and the second cylinder 31 to rotate, thereby enabling the second rotating cylinder 3 to rotate 360°.

[0039] like Figure 2 As shown, the pressure-bearing body 33 is fixed in the middle section of the second cylinder 31. The pressure-bearing body 33 has a circular flared groove 331 on the side facing the upper end of the second cylinder 31. The mounting base 5 includes a mounting section 51 and a connecting section 52 integral with the mounting section 51. The mounting section 51 has a cylindrical structure. The propulsion cylinder 63 and the rock drill body 61 are installed in the mounting section 51 from top to bottom. The propulsion end of the propulsion cylinder 63 is drivenly connected to the rock drill body 61. The drill rod 62 of the rock drill body 61 extends from the upper end of the mounting section 51. The free end of the connecting section 52 has a spherical surface 53. The spherical surface 53 can rotate and press against the circular flared groove 331, so that the mounting base 5 can rotate 360° relative to the second cylinder 31 in multiple planes, so that the rock drill body 61 can rotate and drill in a narrow space, thereby improving the drilling efficiency of the rock drill body 61.

[0040] like Figure 1 As shown, there are multiple actuator cylinders 4, which are evenly arranged on the outer side of the second cylinder 31 around the axis. The main body end of the actuator cylinder 4 is hinged to the outer wall of the second cylinder 31, and the piston rod end of the actuator cylinder 4 is hinged to the lower outer wall of the mounting section 51. Driving the piston of the actuator cylinder 4 to extend and return can drive the mounting base 5 to rotate.

[0041] Based on the above, this embodiment provides a rotary rock drill in which the first rotating cylinder 2 and the second rotating cylinder 3 can both rotate 360°, and the rotation planes of the first rotating cylinder 2 and the second rotating cylinder 3 are obliquely intersecting. At the same time, the mounting base 5 can rotate within a certain range. Therefore, the rock drill body 61 can rotate to drill holes around the working face, realizing multi-angle drilling in a narrow space, which effectively improves drilling efficiency.

[0042] In this embodiment, the angle between the oblique cut surface and the central axis of the first cylinder 21 is 35°-55°, that is, the rotation plane of the first cylinder 21 is oblique to the rotation plane of the second cylinder 31. Preferably, the angle between the oblique cut surface and the axial direction of the first cylinder 21 is 45°, and the maximum rotation angle of the mounting base 5 relative to the axial direction of the second cylinder 31 is 45°. At this time, the rock drill body 61 covers a wider drilling area, which can further improve the drilling efficiency of the rock drill body 61.

[0043] like Figure 2 As shown, the outer wall of the rock drill body 61 is provided with a plurality of sliding grooves that extend axially along the base 11 evenly in the circumferential direction. The inner wall of the mounting base 5 is provided with sliding strips 54 that cooperate with the sliding grooves one by one. By using the sliding strips 54 and the sliding grooves, the rock drill body 61 can only move along the axial direction, making the drilling position more accurate.

[0044] like Figure 2 As shown, the rotary rock drill provided in this embodiment also includes a buffer water tank 71 and multiple spray pipes 72. The buffer water tank 71 is annular and installed at the upper port of the base 11. The buffer water tank 71 has multiple water outlets on the side facing the drill rod 62. Each water outlet is equipped with a spray pipe 72. The spray pipe 72 is parallel to the drill rod 62 and sprays water onto the drill rod 62, which can reduce dust and pollution.

[0045] like Figure 4 As shown, the spray pipe 72 includes a mist outlet pipe 721, a connecting pipe 722, and a compressor 723. There are at least two connecting pipes 722, which are connected in a coaxial sliding fit in sequence. The mist outlet pipe 721 is fixed on the foremost connecting pipe 722. Each connecting pipe 722 has an end cap 724 at its port. A compressor 723 is sandwiched between two adjacent connecting pipes 722. The two ends of the compressor 723 are respectively fixed to the two end caps 724 of the two adjacent mist outlet pipes 721 that are slidingly fitted.

[0046] In this embodiment, the sliding fit between two adjacent connecting pipes 722 allows the spray pipe 72 to adapt to uneven rock surfaces, thereby improving the dust suppression effect of spraying.

[0047] In this embodiment, the free end of the mist outlet pipe 721 is a closed end. The pipe wall of the mist outlet pipe 721 is provided with a plurality of spray holes 725 facing the drill rod 62 and obliquely intersecting the connecting pipe 722. Since the dust concentration at the borehole opening is much greater than the dust concentration at other locations, the spray holes 725 obliquely intersecting the connecting pipe 722 are more conducive to dust reduction.

[0048] The inner diameter of the buffer water tank 71 is 5-10 times the diameter of the drill rod 62. There is a dust inlet channel between the buffer water tank 71 and the drill rod 62. Therefore, in this embodiment, a hemispherical dust cover 73 is detachably installed between the buffer water tank 71 and the drill rod 62. The hemispherical dust cover 73 has a through hole in its radial direction for the drill rod 62 to rotate. The dust generated by the drill rod 62 during drilling will fall freely after being suppressed by the water mist sprayed by the spray pipe 72, thus preventing the dust from entering the mounting base 5 body 11.

[0049] In this embodiment, the density of the spray holes 725 on the side of the mist outlet pipe 721 facing the drill rod 62 is greater than the density of the spray holes on the side away from the drill rod 62.

[0050] In this embodiment, the free end of the mist outlet pipe 721 has a hemispherical structure.

[0051] In summary, the rotary rock drill provided in this embodiment can adjust the angle of the rock drill body 61 on a large scale to adapt to drilling in confined spaces. It has a fast drilling and displacement speed and high hole quality. At the same time, it is equipped with a dust suppression device, which helps to improve the air quality of the working space and reduce pollution.

[0052] Example 2

[0053] like Figure 5 As shown, this embodiment is a further optimization based on embodiment 1. The optimization is that the bottom of the mounting base 5 is provided with a sliding seat 9 that slides with the push beam 8.

[0054] By setting the slide block 9, the rotary rock drill can be applied to the rock drill carrier, thereby increasing the application range of the rotary rock drill.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications and substitutions should be covered within the scope of the claims of the present invention. Technical aspects, shapes, and structures not described in detail in this invention are all well-known technologies.

Claims

1. A rotary rock drill, characterized in that, It includes a rock drill body (61), a propulsion cylinder (63), a mounting base (5), an actuator cylinder (4), a first rotating cylinder (2), a second rotating cylinder (3), and a base (1); The base (1) includes a hollow cylindrical structure seat body (11), a first bearing (12) fixed to the inner wall of the upper end of the seat body (11), and a first driving device installed axially inside the seat body (11). The first rotating cylinder (2) includes a first cylinder body (21), a first driven tooth (22) circumferentially fixed to the inner wall of the lower end of the first cylinder body (21), a second bearing (23) circumferentially fixed to the inner wall of the upper end of the first cylinder body (21), and a second driving device installed inside the first cylinder body (21) and obliquely perpendicular to the axial direction of the first cylinder body (21). The lower end of the first cylinder body (21) is fastened to the inner wall of the rotating disk of the first bearing (12). The driving part of the first driving device is driven and engaged with the first driven tooth (22). The upper end surface of the first cylinder body (21) is a chamfered surface. The axial direction of the rotating part of the second bearing (23) is perpendicular to the upper end surface of the first cylinder body (21). The second rotating cylinder (3) includes a second cylinder body (31), a second driven tooth (32) circumferentially fixed to the inner wall of the lower end of the second cylinder body (31), and a pressure-bearing body (33) fixed to the middle section of the second cylinder body (31). The lower end of the second cylinder body (31) is fastened to the inner wall of the rotating part of the second bearing (23). The driving part of the second driving device is driven and engaged with the second driven tooth (32). The pressure-bearing body (33) has a circular flared groove (331) on the side facing the upper end of the second cylinder body (31). The mounting base (5) includes a cylindrical mounting section (51) and a rod-shaped connecting section (52). The propulsion cylinder (63) and the rock drill body (61) are installed in the mounting section (51) from top to bottom. The propulsion end of the propulsion cylinder (63) is driven to connect with the rock drill body (61). The drill rod (62) of the rock drill body (61) extends from the upper port of the mounting section (51). The free end of the connecting section (52) has a spherical part (53). The spherical part (53) can be rotated and pressed against the circular flared groove (331). The actuator (4) consists of multiple actuators and is evenly distributed around the outer side of the second cylinder (31) along its axial direction. The main body end of the actuator (4) is hinged to the outer wall of the second cylinder (31), and the piston rod end of the actuator (4) is hinged to the lower outer wall of the mounting section (51).

2. A rotary rock drill according to claim 1, characterized in that: The first driving device includes a first fixed plate (13), a first hydraulic motor (14) and a first driving gear (15). The first fixed plate (13) is fixed to the inner wall of the first cylinder (21) along the radial direction of the first cylinder (21). The first hydraulic motor (14) is fixed on the first fixed plate (13). The first driving gear (15) is mounted on the drive rod of the first hydraulic motor (14).

3. A rotary rock drill according to claim 1, characterized in that: The angle between the oblique cut surface and the central axis of the first cylinder (21) is 35°-55°.

4. A rotary rock drill according to claim 1, characterized in that: The outer wall of the rock drill body (61) is provided with a plurality of grooves extending axially along the seat body (11) in a circumferential direction. The inner wall of the mounting seat (5) is provided with slide bars (54) that cooperate with the grooves one by one.

5. A rotary rock drill according to claim 1, characterized in that: It also includes a buffer water tank (71) and multiple spray pipes (72). The buffer water tank (71) is annular and installed at the upper port of the base (11). The buffer water tank (71) has multiple water outlets on the side facing the drill rod (62), and each water outlet is equipped with a spray pipe (72).

6. A rotary rock drill according to claim 5, characterized in that: The spray pipe (72) includes a mist outlet pipe (721), a connecting pipe (722), and a compressor (723). There are at least two connecting pipes (722) that are connected in a coaxial sliding fit. The mist outlet pipe (721) is fixed on the frontmost connecting pipe (722). Each connecting pipe (722) has an end cap (724) at its port. A compressor (723) is sandwiched between two adjacent connecting pipes (722). The two ends of the compressor (723) are fixedly connected to the two end caps (724) of the two adjacent mist outlet pipes (721).

7. A rotary rock drill according to claim 6, characterized in that: The free end of the mist outlet pipe (721) is a closed end, and the pipe wall of the mist outlet pipe (721) is provided with a plurality of spray holes (725) facing the drill rod (62) and obliquely intersecting the connecting pipe (722).

8. A rotary rock drill according to claim 7, characterized in that: The density of the spray holes (725) on the side of the mist outlet pipe (721) facing the drill rod (62) is greater than the density of the spray holes (725) on the side away from the drill rod (62).

9. A rotary rock drill according to claim 7, characterized in that: The free end of the mist outlet pipe (721) has a hemispherical structure.

10. A rotary rock drill according to claim 1, characterized in that: The bottom of the mounting base (5) is provided with a slide (9) that slides in conjunction with the push beam (8).

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