Downhole advanced joint cutting pressure relief drilling device

Abstract

The utility model relates to the technical field of roadway construction, in particular to an underground advanced joint cutting pressure relief drilling device. According to the technical scheme, the device comprises a crawler trolley and a fixing mechanism, the fixing mechanism is installed between the front side and the rear side of a crawler trolley frame, four stand columns are symmetrically installed at the front end and the rear end of the upper surface of the crawler trolley frame in a pairwise mode, telescopic columns are inserted into the four stand columns, and a transverse installation plate is installed at the tops of the two telescopic columns at the same end; drilling motors are mounted in the middles of the bottoms of the two transverse mounting plates, U-shaped frames are mounted in the middles of the tops of the two transverse mounting plates, circular shafts are rotationally mounted in the middles of cross beams of the two U-shaped frames through bearing seats, the lower ends of the two circular shafts are connected with output shafts of the two drilling motors through flanges correspondingly, mounting seats are mounted at the tops of the two circular shafts, and drilling rods are inserted into the two mounting seats; drill bits are mounted at the tops of the two drill rods. According to the drilling device, drilling is directly conducted through the drill bit, the collapse situation caused when water flow drilling encounters a soft geological structure is avoided, and the practicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, specifically to an underground pre-cutting and pressure-relief drilling device. Background Technology

[0002] The roadway roof refers to the top portion of a tunnel, underground roadway, or mine, which bears the weight of the strata and rocks, as well as other construction and operational loads. The stability of the roadway roof is crucial to the safety of underground engineering projects. In the construction of slotted blasting holes in roadway cutting and pressure relief, a pre-cutting drilling technique is used to construct a row of directional blasting holes in the roadway roof to prepare for blasting and roof cutting during the mining process.

[0003] Traditional advanced slotting and pressure relief drilling devices use water flow for drilling. Due to different geological structures, the drilling location may be in a soft soil layer. Water flow drilling can cause the soft soil layer of the hole wall to collapse, which in turn affects the progress of drilling and subsequent slotting, ultimately affecting the quality of the hole and making it difficult to place explosives inside the hole. Therefore, it has low practicality. Utility Model Content

[0004] The purpose of this utility model is to provide a downhole pre-cutting and pressure relief drilling device, which can directly drill through the drill bit, avoiding the collapse that may occur when water flow drilling encounters soft geological structures, thus improving the practicality of the device and solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a downhole pre-cutting and pressure-relief drilling device, comprising a tracked trolley and a fixing mechanism. The fixing mechanism is installed in the middle of the front and rear sides of the tracked trolley frame. Four columns are symmetrically installed in pairs at the front and rear ends of the upper surface of the tracked trolley frame. Telescopic columns are inserted into the four columns. Horizontal mounting plates are installed on the top of the two telescopic columns at the same end. Drilling motors are installed in the middle of the bottom of the two horizontal mounting plates, and U-shaped frames are installed in the middle of the top of the two horizontal mounting plates. Round shafts are rotatably installed in the middle of the crossbeams of the two U-shaped frames through bearing seats. The lower ends of the two round shafts are connected to the output shafts of the two drilling motors respectively through flanges. Mounting seats are installed on the top of the two round shafts. Drill rods are inserted into the two mounting seats and fixed with screws. Drill bits are installed on the top of the two drill rods.

[0006] Preferably, the fixing mechanism consists of a fixing seat, a fixing plate, and a fixing hydraulic rod. The fixing seat is mounted on the tracked trolley frame, the fixing hydraulic rod is mounted on the top of the fixing seat, and the fixing plate is mounted on the protruding end of the fixing hydraulic rod. By setting up the fixing mechanism, the two ends of the tracked trolley can be fixed during drilling.

[0007] Preferably, a fixing block is installed on the upper inner side of each of the four columns, and a lifting hydraulic rod is installed at the bottom of each of the four fixing blocks. The extended ends of the four lifting hydraulic rods are fixed to two horizontal mounting plates in pairs. By setting up the lifting hydraulic rods, the drill rod can be driven to rise to perform drilling.

[0008] Preferably, the two U-shaped frames are inclinedly mounted with guide channels. By setting the guide channels, the soil generated during drilling is diverted to both ends of the tracked trolley.

[0009] Preferably, four buckles are symmetrically installed on each of the left and right sides of the tracked trolley. These buckles allow for the storage of the drill rod.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] In use, the two drill rods are removed from the clips and installed on the two mounting bases respectively. The two drilling motors drive the two drill rods to rotate, and the rotation of the two drill rods drives the two drill bits to rotate. The four lifting hydraulic rods drive the two drill bits to contact the top of the tunnel for drilling, thereby realizing drilling directly through the drill bits. This avoids the collapse that may occur when water flow drilling encounters soft geological structures, thus improving the practicality of the device. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the drill pipe storage of this utility model;

[0014] Figure 3 This is a partial side view of the present invention.

[0015] In the diagram: 1. Tracked trolley; 2. Fixing plate; 3. Fixing seat; 4. Fixing hydraulic rod; 5. Column; 6. Telescopic column; 7. Guide channel; 8. Horizontal mounting plate; 9. U-shaped frame; 10. Mounting seat; 11. Drill rod; 12. Drill bit; 13. Buckle; 14. Drilling motor; 15. Round shaft; 16. Fixing block; 17. Lifting hydraulic rod. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1 to 3This utility model provides a technical solution for an underground pre-cutting and pressure-relief drilling device: an underground pre-cutting and pressure-relief drilling device includes a tracked trolley 1 and a fixing mechanism. The fixing mechanism is installed in the middle of the front and rear sides of the tracked trolley 1 frame. The fixing mechanism consists of a fixing seat 3, a fixing plate 2 and a fixing hydraulic rod 4. The fixing seat 3 is installed on the tracked trolley 1 frame, and the fixing hydraulic rod 4 is installed on the top of the fixing seat 3. The fixing plate 2 is installed on the extended end of the fixing hydraulic rod 4. In use, the tracked trolley 1 is driven into the roadway. The two fixing hydraulic rods 4 work first to drive the two fixing plates 2 to descend and contact the ground surface, so as to achieve stable support for the tracked trolley 1.

[0018] Four uprights 5 are symmetrically installed at both the front and rear ends of the upper surface of the tracked trolley 1 frame. Telescopic columns 6 are inserted into the interior of each upright 5. Fixing blocks 16 are installed on the upper inner sides of each upright 5. Lifting hydraulic rods 17 are installed at the bottom of each fixing block 16. The extended ends of the four lifting hydraulic rods 17 are fixed to two horizontal mounting plates 8 in pairs. A horizontal mounting plate 8 is installed on the top of each of the two telescopic columns 6 at the same end. A drilling motor 14 is installed in the middle of the bottom of each horizontal mounting plate 8, and a U-shaped frame 9 is installed in the middle of the top. Guide channels 7 are installed at an angle around each of the two U-shaped frames 9. A round shaft 15 is rotatably mounted in the middle of the crossbeams of each of the two U-shaped frames 9 via bearing seats. The lower ends of the two round shafts 15 are connected to the output shafts of the two drilling motors 14 respectively via flanges. The tops of the two round shafts 15 are... The tracked trolley 1 is equipped with two mounting bases 10, into which drill rods 11 are inserted and fixed with screws. Drill bits 12 are installed on the top of each drill rod 11. Four clips 13 are symmetrically installed on the left and right sides of the tracked trolley 1. The two drill rods 11 are removed from the clips 13 and installed on the two mounting bases 10 respectively. The two drilling motors 14 work to drive the two round shafts 15 to rotate. The rotation of the two round shafts 15 drives the two drill rods 11 to rotate. The rotation of the two drill rods 11 drives the two drill bits 12 to rotate. The four lifting hydraulic rods 17 work to drive the two horizontal mounting plates 8 to rise, thereby driving the two drill bits 12 to contact the top of the tunnel to drill holes. The soil produced by drilling falls onto the guide channel 7 and is guided to the side of the tracked trolley 1 through the two guide channels 7.

[0019] All motors in this utility model are designed using the small servo motor model 14HS2408. This model of motor is only for reference by those skilled in the art. Those skilled in the art can select motors with the same parameters and functions for installation and debugging according to actual production needs. This utility model will not elaborate further.

[0020] When this utility model is in use, the tracked trolley 1 is driven into the tunnel. The two fixed hydraulic rods 4 first work to drive the two fixed plates 2 to descend and contact the ground surface. Then, the two drill rods 11 are removed from the buckles 13 and installed on the two mounting seats 10 respectively. The two drilling motors 14 work to drive the two round shafts 15 to rotate. The rotation of the two round shafts 15 drives the two drill rods 11 to rotate. The rotation of the two drill rods 11 drives the two drill bits 12 to rotate. The four lifting hydraulic rods 17 work to drive the two horizontal mounting plates 8 to rise, thereby driving the two drill bits 12 to contact the top of the tunnel to drill holes. The soil produced by drilling falls onto the guide channel 7 and is guided to the side of the tracked trolley 1 through the two guide channels 7.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A downhole ahead-of-fracture pressure-relief borehole device comprising a caterpillar trolley (1) and a fixing mechanism, characterized in that: The crawler trolley (1) frame front and rear side is provided with a fixing mechanism, the crawler trolley (1) frame upper surface front and rear ends are provided with four columns (5) in pairs, four columns (5) are provided with telescopic columns (6) inserted in the inside, the same end two telescopic columns (6) are provided with horizontal mounting plates (8) installed on the top, two horizontal mounting plates (8) are provided with drilling motors (14) installed on the bottom and U-shaped frames (9) installed on the top, two U-shaped frames (9) are provided with circular shafts (15) rotatably installed on the beam through bearing seats, two circular shafts (15) are connected with the output shafts of two drilling motors (14) through flanges, two circular shafts (15) are provided with mounting seats (10) installed on the top, two drilling rods (11) are inserted in the inside of two mounting seats (10) and are fixed through screws, two drilling rods (11) are provided with drill bits (12) installed on the top.

2. A downhole ahead-of-fracture pressure-relief drilling device according to claim 1, characterized in that: The fixing mechanism is composed of a fixing base (3), a fixing plate (2) and a fixing hydraulic rod (4), the fixing base (3) is installed on the crawler trolley (1) frame, the fixing base (3) is provided with the fixing hydraulic rod (4) installed on the top, and the fixing hydraulic rod (4) is provided with the fixing plate (2) installed on the extending end.

3. A downhole ahead-of-fracture pressure-relief drilling device according to claim 1, characterized in that: Four columns (5) are provided with fixing blocks (16) installed on the inside upper end, four fixing blocks (16) are provided with lifting hydraulic rods (17) installed on the bottom, and four lifting hydraulic rods (17) are fixed on two horizontal mounting plates (8) in pairs on the extending end.

4. A downhole ahead-of-fracture pressure-relief drilling device according to claim 1, characterized in that: Two U-shaped frames (9) are provided with guide grooves (7) installed in a surrounding and inclined manner.

5. A downhole ahead-of-fracture pressure-relief drilling device according to claim 1, characterized in that: The crawler trolley (1) body left and right sides are provided with four buckles (13) in pairs.

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