Precise righting device for tunnel ultra-deep pipe shed drilling

Abstract

The utility model discloses a tunnel ultra-deep pipe shed drilling accurate righting device which comprises a drilling machine, a rotary power head is installed on one side of the drilling machine, a drilling rod is installed on one side of the rotary power head, a down-the-hole hammer is installed at one end of the drilling rod, a drill bit is installed at one end of the down-the-hole hammer, and the drill bit is installed at the other end of the down-the-hole hammer. A righting mechanism is installed at the end, away from the drill bit, of the down-hole hammer and comprises a rack fixedly connected with the down-hole hammer, the rack is of a cylindrical structure, and a plurality of sets of hydraulic cylinders are installed on the outer side of the rack at equal intervals. By arranging the righting mechanism, when a drill bit deviates in the drilling process, the height of an arc-shaped adjusting piece can be adjusted by a hydraulic cylinder through the stroke of the hydraulic cylinder below one adjusting piece on the rack, the angle of the drill bit can be adjusted after the adjusting piece makes contact with the hole wall, the drilling precision is improved, and the working efficiency is greatly improved; the construction quality of the pipe shed is improved, and the drilling cost in the construction of the pipe shed is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ultra-deep pipe-roof drilling in tunnels, in particular to a precise straightening device for ultra-deep pipe-roof drilling in tunnels. Background Art

[0002] Long pipe shelters are a common advanced support structure, primarily used in challenging locations such as extremely fractured rock, landslides, sandy soil formations, highly expansive strata, highly rheological strata, fractured rock, fault fracture zones, and shallow, high-bias surrounding rock. Existing tunnel pipe shelters are typically 10-45m long and are typically drilled using a horizontal drilling rig.

[0003] During the drilling process, due to the excessive weight of the drilling rig and the soft underlying soil, the head of the pipe jacking machine is prone to sinking, and the end position is getting farther and farther away from the tunnel excavation contour line. If not handled in time, it will cause the tunnel axis to deviate, seriously affecting the construction progress and quality. The existing technology is to set an angle detector for the drilling machine, set the external insertion angle of the pipe jack upward from the horizontal axis at the front of the drilling, adjust the drilling rig angle during drilling, and adjust the distance between the borehole and the horizontal axis through compensation. This adjustment method has poor adjustment accuracy, which reduces drilling accuracy and work efficiency. Utility Model Content

[0004] The main purpose of the utility model is to provide a precise straightening device for ultra-deep pipe-roof drilling in a tunnel.

[0005] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0006] A precise straightening device for ultra-deep pipe-roof drilling in a tunnel comprises a drilling rig, a rotary power head being mounted on one side of the drilling rig, a drill rod being mounted on one side of the rotary power head, a down-the-hole hammer being mounted on one end of the drill rod, a drill bit being mounted on one end of the down-the-hole hammer, a straightening mechanism being mounted on an end of the down-the-hole hammer away from the drill bit, the straightening mechanism comprising a frame fixedly connected to the down-the-hole hammer, the frame being a cylindrical structure, a plurality of groups of hydraulic cylinders being equidistantly mounted on the outside of the frame, an adjusting plate being fixed to the output end of the hydraulic cylinder, and the adjusting plate being an arc-shaped structure, and a protective mechanism being mounted on the adjusting plate.

[0007] Preferably, the protection mechanism includes a slot symmetrically provided on the adjustment plate, and a guide rod is fixed in the slot.

[0008] Preferably, a return spring is fixed at one end in the empty slot and located outside the guide rod, and one end of the return spring is connected to a sliding seat.

[0009] Preferably, the sliding seat is slidably connected to the guide rod, and a protective plate is installed on the top of the sliding seat.

[0010] Preferably, connecting seats are installed at both ends of the top and bottom of the hydraulic cylinder, and both sides of the connecting seat are fixedly connected to the frame and the adjusting plate respectively.

[0011] Preferably, a plurality of sets of fixing bolts are equidistantly installed on the frame, and the frame is connected to the down-the-hole impactor via the fixing bolts.

[0012] Preferably, a plurality of support seats are installed in the frame, and the support seats are against the drill rods.

[0013] The beneficial technical effects are:

[0014] By setting up a straightening mechanism, when the drill bit deviates during the process, the hydraulic cylinder can adjust the height of the arc-shaped adjusting plate through the stroke of the hydraulic cylinder under one of the adjusting plates on the frame. After the adjusting plate contacts the hole wall, the angle of the drill bit can be adjusted to improve the drilling accuracy, greatly improve work efficiency, improve the quality of pipe roof construction, and reduce the cost of drilling in pipe roof construction.

[0015] By setting up a protective mechanism, during the correction process, when the adjusting piece contacts the hole wall, the drill bit is in a forward drilling state. At this time, the protective plate in the protective mechanism contacts the hole wall and is subjected to friction, which can enable the sliding seat to move along the guide rod in the empty groove and stretch the reset spring. By reducing the friction between the adjusting piece and the hole wall, the service life of the adjusting piece is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of a preferred embodiment of a precise straightening device for ultra-deep pipe-roof drilling in a tunnel according to the utility model;

[0017] Figure 2 This is a schematic diagram of the positional relationship between the adjusting piece and the protective mechanism in a preferred embodiment of a precise straightening device for ultra-deep pipe-roof drilling in a tunnel according to the present invention;

[0018] Figure 3 The figure is a schematic diagram showing the positional relationship among the straightening mechanism, the connecting seat and the supporting seat in a preferred embodiment of a precise straightening device for ultra-deep pipe-roof drilling in a tunnel according to the present invention.

[0019] The following are the descriptions of the reference numerals:

[0020] 1. Drilling rig; 2. Rotary power head; 3. Drill rod; 4. Down-the-hole impactor; 5. Drill bit; 6. Straightening mechanism; 601. Frame; 602. Hydraulic cylinder; 603. Adjusting plate; 7. Protective mechanism; 701. Slot; 702. Guide rod; 703. Return spring; 704. Sliding seat; 705. Protective plate; 8. Connecting seat; 9. Fixing bolt; 10. Support seat. DETAILED DESCRIPTION

[0021] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is described in further detail below with reference to embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0022] like Figure 1-Figure 3 As shown, the embodiment provides a precise straightening device for ultra-deep pipe-roof drilling in a tunnel, comprising a drilling rig 1, a rotary power head 2 installed on one side of the drilling rig 1, the drilling rig 1 drives a drill rod 3 to rotate through the rotary power head 2, a drill rod 3 installed on one side of the rotary power head 2, the drill rod 3 drives a down-the-hole hammer 4 to rotate, a down-the-hole hammer 4 installed on one end of the drill rod 3, the down-the-hole hammer 4 drives a drill bit 5 to rotate, a drill bit 5 installed on one end of the down-the-hole hammer 4, the drill bit 5 can drill, and a straightening machine is installed on the end of the down-the-hole hammer 4 away from the drill bit 5. Structure 6, the straightening mechanism 6 includes a frame 601 fixedly connected to the down-the-hole hammer 4, the frame 601 can support the hydraulic cylinder 602, the frame 601 is a cylindrical structure, and multiple groups of hydraulic cylinders 602 are equidistantly installed on the outside of the frame 601, the hydraulic cylinder 602 can adjust the position of the adjusting plate 603, and the output end of the hydraulic cylinder 602 is fixed with an adjusting plate 603. After the adjusting plate 603 contacts the hole wall, the angle of the drill bit 5 can be adjusted, and the adjusting plate 603 is an arc-shaped structure, and a protective mechanism 7 is installed on the adjusting plate 603.

[0023] like Figure 2 As shown, the protection mechanism 7 includes a slot 701 symmetrically opened on the adjustment piece 603 , and a guide rod 702 is fixed in the slot 701 , so that the guide rod 702 can be conveniently installed on the adjustment piece 603 through the slot 701 .

[0024] like Figure 2 As shown, a return spring 703 is fixed at one end of the slot 701 outside the guide rod 702, and one end of the return spring 703 is connected to a sliding seat 704, which can enable the return spring 703 to drive the sliding seat 704 to reset, thereby resetting the protective plate 705.

[0025] like Figure 2 As shown, the sliding seat 704 is slidably connected to the guide rod 702 , and a protective plate 705 is installed on the top of the sliding seat 704 , which enables the sliding seat 704 to drive the protective plate 705 to move along the guide rod 702 .

[0026] like Figure 1 and Figure 3 As shown, connecting seats 8 are installed at both ends of the top and bottom of the hydraulic cylinder 602, and the two sides of the connecting seats 8 are fixedly connected to the frame 601 and the adjusting plate 603 respectively, so that both sides of the hydraulic cylinder 602 are conveniently connected to the frame 601 and the adjusting plate 603 through the connecting seats 8.

[0027] like Figure 1 and Figure 3As shown, multiple groups of fixing bolts 9 are equidistantly installed on the frame 601 , and the frame 601 is connected to the down-the-hole hammer 4 through the fixing bolts 9 , making it convenient to install the frame 601 on the down-the-hole hammer 4 through the fixing bolts 9 .

[0028] like Figure 1 and Figure 3 As shown, multiple sets of support seats 10 are installed in the frame 601, and the support seats 10 are against the drill rods 3, and the stability of the frame 601 can be ensured by the support seats 10.

[0029] The working principle of this device: When the device is used, the staff uses the fixing bolts 9 to fix the frame 601 on the down-the-hole hammer 4, and then the drilling rig 1 drives the drill rod 3 to rotate through the rotary power head 2, the drill rod 3 drives the down-the-hole hammer 4 to rotate, and the down-the-hole hammer 4 drives the drill bit 5 to rotate to achieve drilling. When the drill bit 5 deviates during the drilling process, the hydraulic cylinder 602 adjusts the height of the arc-shaped adjusting piece 603 through the stroke of the hydraulic cylinder 602 under one of the adjusting pieces 603 on the frame 601, and the adjusting piece 603 is aligned with the hole. After the wall is in contact, the angle of the drill bit 5 can be adjusted to improve the drilling accuracy, greatly improve the work efficiency, improve the quality of pipe roof construction, and reduce the cost of drilling in pipe roof construction. At the same time, since the drill bit 5 is in a forward drilling state when the adjusting piece 603 contacts the hole wall, the protective plate 705 in the protective mechanism 7 contacts the hole wall and is subjected to friction, which can enable the sliding seat 704 to move along the guide rod 702 in the empty groove 701 and stretch the reset spring 703, thereby increasing the service life of the adjusting piece 603 by reducing the friction between the adjusting piece 603 and the hole wall.

[0030] The above are only further embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present invention based on the technical solution and concept of the present invention, which fall within the protection scope of the present invention.

Claims

1. A precise straightening device for ultra-deep pipe-roof drilling in tunnels, characterized by: The invention comprises a drilling rig (1), wherein a rotary power head (2) is installed on one side of the drilling rig (1), a drill rod (3) is installed on one side of the rotary power head (2), a down-the-hole hammer (4) is installed on one end of the drill rod (3), a drill bit (5) is installed on one end of the down-the-hole hammer (4), a straightening mechanism (6) is installed on the end of the down-the-hole hammer (4) away from the drill bit (5), the straightening mechanism (6) comprises a frame (601) fixedly connected to the down-the-hole hammer (4), the frame (601) is a cylindrical structure, a plurality of groups of hydraulic cylinders (602) are equidistantly installed on the outside of the frame (601), an adjusting plate (603) is fixed to the output end of the hydraulic cylinder (602), and the adjusting plate (603) is an arc-shaped structure, and a protective mechanism (7) is installed on the adjusting plate (603).

2. The precise straightening device for ultra-deep pipe-roof drilling in a tunnel according to claim 1, characterized in that: The protection mechanism (7) comprises a slot (701) symmetrically arranged on the adjustment plate (603), and a guide rod (702) is fixed in the slot (701).

3. The precise straightening device for ultra-deep pipe-roof drilling in a tunnel according to claim 2, characterized in that: A return spring (703) is fixed at one end of the empty slot (701) and located outside the guide rod (702), and one end of the return spring (703) is connected to a sliding seat (704).

4. The precise straightening device for ultra-deep pipe-roof drilling in a tunnel according to claim 3, characterized in that: The sliding seat (704) is slidably connected to the guide rod (702), and a protective plate (705) is installed on the top of the sliding seat (704).

5. The precise straightening device for ultra-deep pipe-roof drilling in a tunnel according to claim 1, characterized in that: Connecting seats (8) are installed at both top and bottom ends of the hydraulic cylinder (602), and both sides of the connecting seat (8) are fixedly connected to the frame (601) and the adjusting plate (603) respectively.

6. The precise straightening device for ultra-deep pipe-roof drilling in a tunnel according to claim 1, characterized in that: A plurality of sets of fixing bolts (9) are equidistantly mounted on the frame (601), and the frame (601) is connected to the down-the-hole impactor (4) via the fixing bolts (9).

7. The precise straightening device for ultra-deep pipe-roof drilling in a tunnel according to claim 1, characterized in that: A plurality of support seats (10) are installed in the frame (601), and the support seats (10) are against the drill rod (3).

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