Hole guiding device and hole guiding method for hard rock stratum

Abstract

The invention discloses a hard rock stratum hole guiding device and method, and belongs to the technical field of geological pile foundation drilling. The hard rock stratum hole guiding device comprises a mounting table, two vertical rails are fixedly mounted at the top of the mounting table, and hole guiding structures are arranged in the two vertical rails; the guide hole structure comprises a sliding frame, first fixing plates are fixedly mounted on the two sides of the outer surface of the sliding frame through bolts, and mounting frames are fixedly mounted in the two first fixing plates through bolts. Through the hole guiding structure, during hole guiding work, an output shaft of the hole guiding structure can drive a connecting rod to rotate through driving of a first servo motor, therefore, the connecting rod can drive a threaded drill rod and a pneumatic down-the-hole hammer to rotate, and after the pneumatic down-the-hole hammer makes contact with the ground, the pneumatic down-the-hole hammer is started, so that hard rock stratum stones can be smashed; and then drilling work is conducted through the threaded drill rod, holes with different depths can be drilled through movement of the sliding frame in the vertical rail, and therefore the purposes of being capable of adapting to various complex geological conditions, high in hole forming speed and high in efficiency are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of geological pile foundation drilling, and specifically to a hard rock pilot hole device and a pilot hole method. Background Technique

[0002] Geological pile foundation drilling is the core technology used in civil engineering to construct pile foundations. It refers to the process of drilling pile holes in the formation through mechanical equipment (such as rotary drilling rigs, percussion drilling rigs, etc.), and placing steel reinforcement cages and pouring concrete in the holes to form a bearing structure.

[0003] Currently, the commonly used methods for geological pile foundation drilling in hard rock mainly include using percussion drills, rotary drills to form holes, down-the-hole drills to form holes, and long spiral drilling rigs to form holes. However, these four methods have slow construction speeds. Except for down-the-hole drills and percussion drills, rotary drills and long spiral drilling rigs are not suitable for forming holes in hard rock geological formations, which affects the quality of pilot holes. Based on the existing technical deficiencies, the present invention designs a hard rock pilot hole device and a pilot hole method. Summary of the Invention

[0004] The present invention provides a hard rock pilot hole device and a pilot hole method, which have the advantages of being able to adapt to a variety of complex geological conditions, fast hole formation speed, and high efficiency, and solve the problems mentioned in the above background technique.

[0005] The present invention provides the following technical solution: A hard rock pilot hole device and a pilot hole method, including an installation platform, on the top of which two vertical rails are fixedly installed. An inner hole structure is provided inside the two vertical rails; the inner hole structure includes a sliding frame, on both sides of the outer surface of the sliding frame, first fixing plates are fixedly installed by bolts. Inside the two first fixing plates, an installation frame is fixedly installed by bolts. On the top of the installation frame, a first fixing ring is fixedly installed. Inside the first fixing ring, a first servo motor is fixedly installed. One end of the output shaft of the first servo motor is fixedly installed with a connecting rod. The end of the connecting rod is fixedly installed with a threaded drill rod through a flange. The end of the threaded drill rod is fixedly installed with a pneumatic down-the-hole hammer through a flange.

[0006] As a preferred technical solution of the present invention, through holes are opened on both sides inside the sliding frame, and a first hinge seat is fixedly installed on one side of the outer surface of the sliding frame.

[0007] As a preferred technical solution of the present invention, a second fixing plate is fixedly installed on one side of the outer surface of the sliding frame. One end of the second fixing plate is fixedly installed with a collar, and the collar is sleeved on the outer surface of the connecting rod.

[0008] As a preferred technical solution of the present invention, a plurality of balls are fixedly installed inside the collar, and the outer surfaces of the plurality of balls are in contact with the connecting rod.

[0009] As a preferred technical solution of the present invention, a moving structure is fixedly installed on the top of the installation table, and the moving structure includes two support plates, a slide rail and an empty groove.

[0010] As a preferred technical solution of the present invention, a threaded rod is rotatably installed between the two support plates, and a second hinge seat is threadedly installed on the outer surface of the threaded rod.

[0011] As a preferred technical solution of the present invention, a hinge rod is hingedly installed inside the second hinge seat, and one end of the hinge rod is hingedly connected to the first hinge seat.

[0012] As a preferred technical solution of the present invention, a second fixing ring is fixedly installed inside the empty groove, a second servo motor is fixedly installed inside the second fixing ring, and one end of the output shaft of the second servo motor is fixedly connected to the threaded rod.

[0013] As a preferred technical solution of the present invention, chutes are opened inside the two vertical rails, slide rods are fixedly installed inside the two chutes, limit top plates are fixedly installed at the tops of the two chutes, reinforcing ribs are fixedly installed on both sides of the top of the installation table, one ends of the two reinforcing ribs are fixedly connected to the vertical rails, support seats are fixedly installed on both sides of the bottom of the installation table, and buffer legs are fixedly installed at both ends of the two support seats.

[0014] A hole-drilling method for a hard rock hole-drilling device based on the above includes the following steps:

[0015] S1: Move the installation table to the position where hole drilling is required;

[0016] S2: During the hole-drilling operation, driven by the first servo motor, its output shaft can drive the connecting rod to rotate, thereby enabling the connecting rod to drive the threaded drill rod and the pneumatic down-the-hole hammer to rotate. After the pneumatic down-the-hole hammer contacts the ground, start the pneumatic down-the-hole hammer, thereby enabling it to break the harder rock blocks, and then perform the hole-drilling operation through the threaded drill rod;

[0017] S3: Driven by the second servo motor, its output shaft drives the threaded rod to rotate. Due to the limitation of the slide rail, the threaded rod can horizontally move on the outer surface of the second hinge seat. Since both ends of the hinge rod are hinged to the second hinge seat and the first hinge seat, when the threaded rod moves, the hinge rod can pull the sliding frame to slide downward inside the vertical rail, thereby adjusting the hole-drilling depth;

[0018] S4: Through the setting of the collar and the ball, the ball can contact the connecting rod and limit it, which can prevent the threaded drill rod and the pneumatic down-the-hole hammer from vibrating during the hole-drilling operation, causing the connecting rod to shift, resulting in the hole-drilling position shifting.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. For the hard rock hole-leading device and hole-leading method, during the hole-leading operation, through the hole-leading structure, driven by the first servo motor, its output shaft can drive the connecting rod to rotate, thereby enabling the connecting rod to drive the threaded drill rod and the pneumatic down-the-hole hammer to rotate. After the pneumatic down-the-hole hammer contacts the ground, the pneumatic down-the-hole hammer is started, so that the harder rock blocks can be broken. Subsequently, the threaded drill rod is used for drilling work. By moving the sliding frame in the vertical rail, holes of different depths can be drilled, thus achieving the purpose of being able to adapt to various complex geological conditions, with a fast hole-forming speed and high efficiency;

[0021] 2. For the hard rock hole-leading device and hole-leading method, during the hole-leading operation, through the moving structure, driven by the second servo motor, its output shaft drives the threaded rod to rotate. Due to the limitation of the slide rail, the threaded rod can move horizontally on the outer surface of the second hinge seat. Since both ends of the hinge rod are hinged to the second hinge seat and the first hinge seat, when the threaded rod moves, the hinge rod can pull the sliding frame to slide downward inside the vertical rail, thereby adjusting the hole-leading depth, thus avoiding the situation that the traditional hole-leading device is too high and causes the device to be unstable and shake;

[0022] 3. For the hard rock hole-leading device and hole-leading method, during the hole-leading operation, through the hole-leading structure, through the setting of the collar and the ball, the ball can contact the connecting rod and limit it, which can prevent the threaded drill rod and the pneumatic down-the-hole hammer from being offset due to vibration during the drilling work, resulting in the deviation of the drilling position. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the external structure of the present invention;

[0024] Figure 2 is a schematic diagram of the hole-leading structure of the present invention;

[0025] Figure 3 is a schematic diagram of the structure of the first hinge seat of the present invention;

[0026] Figure 4 is a schematic diagram of the ball structure of the present invention;

[0027] Figure 5 is a schematic diagram of the moving structure of the present invention;

[0028] Figure 6 is a schematic diagram of the reinforcing rib structure of the present invention;

[0029] Figure 7 is a schematic diagram of the slide bar structure of the present invention.

[0030] In the figure: 1, mounting table; 2, vertical rail; 21, sliding groove; 22, sliding rod; 23, limiting top plate; 3, hole-drilling structure; 31, sliding frame; 32, first fixing plate; 33, mounting frame; 34, first fixing ring; 35, first servo motor; 36, connecting rod; 37, threaded drill rod; 38, pneumatic down-the-hole hammer; 39, through hole; 310, first hinge seat; 311, second fixing plate; 312, collar; 313, ball; 4, moving structure; 41, support plate; 42, slide rail; 43, threaded rod; 44, second hinge seat; 45, hinge rod; 46, second fixing ring; 47, second servo motor; 48, empty groove; 5, support seat; 6, buffer leg; 7, reinforcing rib. Specific implementation manner

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figure 1-7 , a hard rock hole-drilling device and a hole-drilling method, including a mounting table 1, two vertical rails 2 are fixedly installed on the top of the mounting table 1, and a hole-drilling structure 3 is arranged inside the two vertical rails 2; the hole-drilling structure 3 includes a sliding frame 31, two sides of the outer surface of the sliding frame 31 are fixedly installed with first fixing plates 32 through bolts, an installation frame 33 is fixedly installed inside the two first fixing plates 32 through bolts, a first fixing ring 34 is fixedly installed on the top of the installation frame 33, a first servo motor 35 is fixedly installed inside the first fixing ring 34, one end of the output shaft of the first servo motor 35 is fixedly installed with a connecting rod 36, the end of the connecting rod 36 is fixedly installed with a threaded drill rod 37 through a flange, and the end of the threaded drill rod 37 is fixedly installed with a pneumatic down-the-hole hammer 38 through a flange.

[0033] Please refer to Figure 1-4 , through holes 39 are opened on both sides inside the sliding frame 31, and a first hinge seat 310 is fixedly installed on one side of the outer surface of the sliding frame 31. A second fixing plate 311 is fixedly installed on one side of the outer surface of the sliding frame 31, one end of the second fixing plate 311 is fixedly installed with a collar 312, and the collar 312 is sleeved on the outer surface of the connecting rod 36. A plurality of balls 313 are fixedly installed inside the collar 312, and the outer surfaces of the plurality of balls 313 are in contact with the connecting rod 36.

[0034] Through the arrangement of the collar 312 and the balls 313, the balls 313 can be in contact with the connecting rod 36 and limit it, which can avoid the connecting rod 36 being offset due to vibration of the threaded drill rod 37 and the pneumatic down-the-hole hammer 38 during the drilling operation, resulting in the drilling position being offset.

[0035] Please refer to Figure 1-5 Figure 1-5 , a moving structure 4 is fixedly installed on the top of the installation table 1. The moving structure 4 includes two support plates 41, a slide rail 42, and an empty slot 48. A threaded rod 43 is rotatably installed between the two support plates 41, and a second hinge seat 44 is threadedly installed on the outer surface of the threaded rod 43. An articulated rod 45 is hingedly installed inside the second hinge seat 44, and one end of the articulated rod 45 is hingedly connected to the first hinge seat 310. A second fixing ring 46 is fixedly installed inside the empty slot 48, and a second servo motor 47 is fixedly installed inside the second fixing ring 46. One end of the output shaft of the second servo motor 47 is fixedly connected to the threaded rod 43. Slide grooves 21 are opened inside the two vertical rails 2, slide rods 22 are fixedly installed inside the two slide grooves 21, and limit top plates 23 are fixedly installed at the tops of the two slide grooves 21. Reinforcing ribs 7 are fixedly installed on both sides of the top of the installation table 1, one end of the two reinforcing ribs 7 is fixedly connected to the vertical rail 2, and support seats 5 are fixedly installed on both sides of the bottom of the installation table 1. Buffer legs 6 are fixedly installed at both ends of the two support seats 5.

[0036] Driven by the second servo motor 47, its output shaft drives the threaded rod 43 to rotate. Due to the limitation of the slide rail 42, the threaded rod 43 can horizontally move on the outer surface of the second hinge seat 44. Since both ends of the articulated rod 45 are hinged to the second hinge seat 44 and the first hinge seat 310, when the threaded rod 43 moves, the articulated rod 45 can pull the sliding frame 31 to slide downward inside the vertical rail 2, thereby adjusting the depth of the pilot hole, and thus avoiding the situation of instability and shaking of the device caused by the traditional pilot hole device being erected too high.

[0037] A pilot hole method for a hard rock pilot hole device includes the following steps:

[0038] S1: Move the installation table 1 to the position where the pilot hole is required;

[0039] S2: During the pilot hole operation, driven by the first servo motor 35, its output shaft drives the connecting rod 36 to rotate, thereby enabling the connecting rod 36 to drive the threaded drill rod 37 and the pneumatic down-the-hole hammer 38 to rotate. After the pneumatic down-the-hole hammer 38 contacts the ground, start the pneumatic down-the-hole hammer 38, thereby enabling it to break the harder rock blocks, and then perform the drilling operation through the threaded drill rod 37;

[0040] S3: Driven by the second servo motor 47, its output shaft drives the threaded rod 43 to rotate. Due to the limitation of the slide rail 42, the threaded rod 43 can horizontally move on the outer surface of the second hinge seat 44. Since both ends of the articulated rod 45 are hinged to the second hinge seat 44 and the first hinge seat 310, when the threaded rod 43 moves, the articulated rod 45 can pull the sliding frame 31 to slide downward inside the vertical rail 2, thereby adjusting the depth of the pilot hole;

[0041] S4: Through the settings of the collar 312 and the ball 313, the ball 313 can contact the connecting rod 36 and position-limit it, which can prevent the connecting rod 36 from shifting due to the vibration of the threaded drill rod 37 and the pneumatic down-the-hole hammer 38 during the drilling operation, thus avoiding the deviation of the drilling position.

[0042] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0043] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hard rock hole-leading device, comprising an installation table (1), characterized in that: At the top of the installation table (1), two vertical rails (2) are fixedly installed, and a hole-drilling structure (3) is arranged inside the two vertical rails (2); The hole-drilling structure (3) includes a sliding frame (31). On both sides of the outer surface of the sliding frame (31), first fixing plates (32) are fixedly installed by bolts. Inside the two first fixing plates (32), an installation frame (33) is fixedly installed by bolts. At the top of the installation frame (33), a first fixing ring (34) is fixedly installed. Inside the first fixing ring (34), a first servo motor (35) is fixedly installed. At one end of the output shaft of the first servo motor (35), a connecting rod (36) is fixedly installed. At the end of the connecting rod (36), a threaded drill rod (37) is fixedly installed through a flange, and at the end of the threaded drill rod (37), a pneumatic down-the-hole hammer (38) is fixedly installed through a flange.

2. The hard rock pilot hole drilling device according to claim 1, characterized in that: Through holes (39) are formed on both sides inside the sliding frame (31), and a first hinge seat (310) is fixedly installed on one side of the outer surface of the sliding frame (31).

3. The hard rock pilot hole drilling device according to claim 1, characterized in that: A second fixing plate (311) is fixedly installed on one side of the outer surface of the sliding frame (31), and a collar (312) is fixedly installed at one end of the second fixing plate (311). The collar (312) is sleeved on the outer surface of the connecting rod (36).

4. The hard rock pilot hole drilling device according to claim 3, characterized in that: A plurality of balls (313) are fixedly installed inside the collar (312), and the outer surfaces of the plurality of balls (313) are in contact with the connecting rod (36).

5. The hard rock hole-leading device according to claim 1, characterized in that: A moving structure (4) is fixedly installed at the top of the installation table (1). The moving structure (4) includes two support plates (41), a slide rail (42), and an empty groove (48).

6. The hard rock pilot hole device according to claim 5, characterized in that: A threaded rod (43) is rotatably installed between the two support plates (41), and a second hinge seat (44) is threadedly installed on the outer surface of the threaded rod (43).

7. The hard rock pilot hole device according to claim 6, characterized in that: An articulated rod (45) is hingedly installed inside the second hinge seat (44), and one end of the articulated rod (45) is hingedly connected to the first hinge seat (310).

8. The hard rock pilot hole device according to claim 5, characterized in that: A second fixing ring (46) is fixedly installed inside the empty groove (48), and a second servo motor (47) is fixedly installed inside the second fixing ring (46). One end of the output shaft of the second servo motor (47) is fixedly connected to the threaded rod (43).

9. The hard rock pilot hole device according to claim 1, characterized in that: Chute grooves (21) are formed inside the two vertical rails (2). Slide rods (22) are fixedly installed inside the two chute grooves (21). Limit top plates (23) are fixedly installed at the tops of the two chute grooves (21). Reinforcing ribs (7) are fixedly installed on both sides at the top of the installation table (1). One end of the two reinforcing ribs (7) is fixedly connected to the vertical rail (2). Support seats (5) are fixedly installed on both sides at the bottom of the installation table (1). Buffer legs (6) are fixedly installed at both ends of the two support seats (5).

10. A hole-drilling method for a hard rock hole-drilling device according to any one of claims 1-9, characterized in that: Including the following steps: S1: Move the installation table (1) to the position where hole-drilling is required; S2: During the pilot hole operation, driven by the first servo motor (35), its output shaft drives the connecting rod (36) to rotate. Thus, the connecting rod (36) drives the threaded drill rod (37) and the pneumatic down-the-hole hammer (38) to rotate. After the pneumatic down-the-hole hammer (38) contacts the ground, it is started, and thus it can break the harder rock layer stones. Subsequently, the drilling work is carried out through the threaded drill rod (37). S3: Driven by the second servo motor (47), its output shaft drives the threaded rod (43) to rotate. Due to the limitation of the slide rail (42), the threaded rod (43) can horizontally move on the outer surface of the second hinge seat (44). Since both ends of the hinge rod (45) are hinged to the second hinge seat (44) and the first hinge seat (310), when the threaded rod (43) moves, the hinge rod (45) can pull the sliding frame (31) to slide down inside the vertical rail (2), thereby adjusting the depth of the pilot hole. S4: Through the arrangement of the collar (312) and the ball (313), the ball (313) can contact and limit the connecting rod (36), which can prevent the threaded drill rod (37) and the pneumatic down-the-hole hammer (38) from being shaken during the drilling work, resulting in the offset of the connecting rod (36) and causing the offset of the drilling position.

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