Mining cross-shaped drill bit convenient to disassemble and assemble

Abstract

The utility model relates to a mining cross-shaped drill bit convenient to disassemble and assemble, which belongs to the technical field of mining equipment and comprises a cross-shaped drill bit and a drill rod, the top of the cross-shaped drill bit is provided with a disassembly and assembly structure, and the disassembly and assembly structure comprises a positioning column fixedly mounted on the outer wall of the top of the cross-shaped drill bit. According to the mining cross-shaped drill bit convenient to disassemble and assemble, the cross-shaped drill bit and a drill rod are rapidly positioned under the action of a positioning column, meanwhile, deviation of the cross-shaped drill bit is prevented under the action of a positioning plate, and the cross-shaped drill bit and the drill rod are connected and fixed under the action of a limiting plate, a semi-annular metal mounting pad and a fastening bolt; and through the effects of the mounting ring, the limiting column, the elastic clamping piece, the mounting base, the fastening bolt and the rhombic clamping column, a nut of the fastening bolt is limited, the mounting stability of the fastening bolt is improved, and therefore the mounting stability of the cross-shaped drill bit and the drill rod is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mining equipment technical field, concretely is a cross drill bit for mining convenient to dismount. BACKGROUND

[0002] Cross drill bit for mining is a kind of drilling tool specially designed for mining, its characteristics are with cross-shaped cutting edge part, it is suitable for the drilling operation of hard geological conditions such as rock.This drill bit can provide strong rock breaking capacity, improve drilling efficiency, and due to its unique design, the drill bit can be quickly replaced after wearing, reduce downtime, reduce maintenance cost.Cross drill bit is usually made of high-strength wear-resistant material to ensure stable performance in harsh mining environment.

[0003] The existing cross drill bit for mining is mostly connected with drill rod by welding, this connection mode can guarantee the stability of drill bit to some extent, but there are certain problems, the drill bit welded connection is complex and time-consuming in replacement process, due to welding fixation, the whole drill bit needs to be cut off from drill rod, then new drill bit is welded, this process is not only time-consuming and laborious, but also easy to cause damage to drill rod, therefore a cross drill bit for mining convenient to dismount is proposed. UTILITARIAN CONTENT

[0004] In view of the deficiencies of prior art, the utility model provides a cross drill bit for mining convenient to dismount, has the advantages such as convenient to dismount and replace cross drill bit, solves the problems that due to welding fixation, the whole drill bit needs to be cut off from drill rod, then new drill bit is welded, this process is not only time-consuming and laborious, but also easy to cause damage to drill rod.

[0005] To achieve the above object, the utility model provides the following technical scheme: a cross drill bit for mining convenient to dismount, including cross drill bit and drill rod, the top of cross drill bit is equipped with dismounting structure;

[0006] The dismounting structure includes the positioning column fixedly installed on the top outer wall of cross drill bit, the top outer wall of cross drill bit is fixedly installed with two positioning plates, the outer peripheral wall of drill rod is fixedly installed with four limiting plates, the outer peripheral wall of drill rod movably installs two half-ring metal mounting pads, the inside of half-ring metal mounting pad is slidably connected with two fastening bolts, and the outer peripheral wall of drill rod is equipped with limiting structure.

[0007] Further, the limiting structure comprises a mounting ring fixedly installed on the outer circumferential wall of the drill rod, two limiting columns are slidably connected in the mounting ring, two elastic clamping pieces are fixedly installed on the outer circumferential wall of the limiting column, two mounting seats are fixedly installed on the outer circumferential wall of the limiting column, a fastening screw is slidably connected in the mounting seat, and a rhombic clamping column is fixedly installed on the bottom outer wall of the limiting column.

[0008] Further, two sliding holes are formed in the mounting ring, and the limiting column is slidably connected in the sliding hole.

[0009] Further, the number of the elastic clamping pieces is four, the elastic clamping pieces are inclined at an angle, and the elastic clamping pieces are attached to the bottom outer wall of the mounting ring.

[0010] Further, four threaded grooves are formed in the mounting ring, and the fastening screw is threadedly connected in the threaded groove in a size-fitting manner.

[0011] Further, the fastening screw comprises a screw and a nut, and the rhombic clamping column is slidably connected between two adjacent nuts.

[0012] Further, a positioning groove is formed in the bottom of the drill rod, and the positioning column is slidably connected in the positioning groove in a size-fitting manner.

[0013] Further, the positioning plate is arc-shaped, an arc-shaped groove is formed in the side of the positioning plate away from the drill rod, the semi-annular metal mounting pad is slidably connected in the arc-shaped groove in a size-fitting manner, two semi-annular metal mounting pads form a metal ring, and the metal ring is slidably connected between the four limiting plates.

[0014] Further, the metal ring and the limiting plate are internally provided with mounting holes, the number of the mounting holes of the metal ring is four, the number of the mounting holes of the limiting plate is two, the fastening screw is slidably installed in the mounting hole in a size-fitting manner, and the diameter of the mounting hole is greater than the diameter of the limiting column.

[0015] Further, the cross drill bit is movably installed at the bottom of the drill rod.

[0016] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:

[0017] The cross drill for mining is convenient to disassemble, the cross drill and the drill rod are positioned quickly through the action of the positioning column, deviation of the cross drill is prevented through the action of the positioning plate, the cross drill and the drill rod are connected and fixed through the action of the limiting plate, the semi-annular metal mounting pad and the fastening bolt, thereby the convenience of disassembly of the cross drill and the drill rod is achieved, the nut of the fastening bolt is limited through the action of the mounting ring, the limiting column, the elastic card, the mounting seat, the fastening screw and the rhombic clamping column, the stability of installation of the cross drill and the drill rod is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the utility model;

[0019] Figure 2 It is the utility model Figure 1 It is a partial sectional view structural schematic view;

[0020] Figure 3 It is a mounting ring structural schematic view of the utility model.

[0021] In the drawing:

[0022] 1, cross drill; 2, drill rod; 3, positioning column; 4, positioning plate; 5, limiting plate; 6, semi-annular metal mounting pad; 7, fastening bolt; 8, mounting ring; 9, limiting column; 10, elastic card; 11, mounting seat; 12, fastening screw; 13, rhombic clamping column. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0024] Please refer to Figures 1 to 3 A cross drill for mining convenient to disassemble in the embodiment comprises a cross drill 1 and a drill rod 2, and the top of the cross drill 1 is provided with a dismounting structure.

[0025] The cross drill 1 is movably installed at the bottom of the drill rod 2.

[0026] The dismounting structure comprises a positioning column 3 fixedly installed at the top outer wall of the cross drill 1, the bottom of the drill rod 2 is provided with a positioning groove, the positioning column 3 is slidably connected in the inside of the positioning groove and is suitable in size, the top outer wall of the cross drill 1 is fixedly installed with two positioning plates 4, and the outer peripheral wall of the drill rod 2 is fixedly installed with four limiting plates 5.

[0027] The outer peripheral wall of the drill rod 2 movably installs two semicircular metal mounting pads 6, the positioning plate 4 is arc-shaped, an arc-shaped groove is formed on the side of the positioning plate 4 away from the drill rod 2, the semicircular metal mounting pads 6 are slidably connected in the arc-shaped groove and are appropriately sized, the two semicircular metal mounting pads 6 form a metal ring, and the metal ring is slidably connected between the four limiting plates 5.

[0028] The semicircular metal mounting pads 6 slidably connect two fastening bolts 7, the metal ring and the limiting plate 5 are both internally provided with mounting holes, the number of the mounting holes in the metal ring is four, the number of the mounting holes in the limiting plate 5 is two, the fastening bolts 7 are slidably installed in the mounting holes and are appropriately sized, and the diameter of the mounting holes is larger than the diameter of the limiting column 9.

[0029] The outer peripheral wall of the drill rod 2 is provided with a limiting structure, the limiting structure comprises a mounting ring 8 fixedly installed on the outer peripheral wall of the drill rod 2, and the mounting ring 8 is internally provided with two sliding holes, and the limiting column 9 is slidably connected in the sliding holes.

[0030] The mounting ring 8 is slidably connected with two limiting columns 9, the outer peripheral wall of the limiting column 9 is fixedly installed with two elastic clamping plates 10, the number of the elastic clamping plates 10 is four, the elastic clamping plates 10 are at an inclined angle, and the elastic clamping plates 10 are attached to the bottom outer wall of the mounting ring 8.

[0031] The outer peripheral wall of the limiting column 9 is fixedly installed with two mounting seats 11, the mounting seat 11 is slidably connected with a fastening screw 12, the bottom outer wall of the limiting column 9 is fixedly installed with a rhombic clamping column 13, the fastening bolt 7 comprises a screw and a nut, the rhombic clamping column 13 is slidably connected between two adjacent nuts, the mounting ring 8 is internally provided with four threaded grooves, and the fastening screw 12 is threadedly connected in the threaded grooves and is appropriately sized.

[0032] In the embodiment, the elastic clamping plates 10 limit the limiting column 9, improve the stability of the installation of the limiting column 9, and after the elastic clamping plates 10 are pressed and attached to the outer wall of the limiting column 9, the limiting column 9 can be pulled upward and moved out of the inside of the mounting ring 8.

[0033] In the embodiment, the multiple edges of the rhombic clamping column 13 and the multiple edges of the nut of the fastening bolt 7 are attached to each other, so that the nut cannot be rotated.

[0034] The working principle of the above embodiment is as follows:

[0035] Firstly, the positioning column 3 is slidably connected to the inside of the drill rod 2, then the two half-ring metal mounting pads 6 are slidably mounted in the inside of the positioning plate 4 and connected to each other, at this time, the two half-ring metal mounting pads 6 are located between the four limiting plates 5, then the fastening bolts 7 are penetrated through the inside of the half-ring metal mounting pads 6 and the limiting plates 5, at this time, the elastic card 10 is pinched and attached to the outer circumferential wall of the limiting column 9, then the limiting column 9 is slidably connected to the inside of the mounting ring 8 and moved downward, when the diamond-shaped clamping column 13 is located between two adjacent nuts, at this time, the elastic card 10 is loosened, finally, the fastening screw 12 is penetrated through the mounting seat 11 and is threadedly connected to the inside of the mounting ring 8, at this time, the installation work of the cross drill bit 1 and the drill rod 2 is completed.

[0036] It should be noted that, in this document, the terms "first", "second", and so on are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or device. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0037] Although the embodiments of the present application 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 application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A cross drill for mining, which is easy to disassemble and assemble, comprising a cross drill (1) and a drill rod (2), characterized in that: The top of the cross drill bit (1) is provided with a dismounting structure; The dismounting structure comprises a positioning column (3) fixedly installed on the outer wall of the top of the cross drill bit (1), the outer wall of the top of the cross drill bit (1) is fixedly installed with two positioning plates (4), the outer peripheral wall of the drill rod (2) is fixedly installed with four limiting plates (5), the outer peripheral wall of the drill rod (2) is movably installed with two semi-annular metal mounting pads (6), the inside of the semi-annular metal mounting pad (6) is slidably connected with two fastening bolts (7), and the outer peripheral wall of the drill rod (2) is provided with a limiting structure.

2. The cross drill for mining as claimed in claim 1, wherein: The limiting structure comprises an installation ring (8) fixedly installed on the outer peripheral wall of the drill rod (2), the inside of the installation ring (8) is slidably connected with two limiting columns (9), the outer peripheral wall of the limiting column (9) is fixedly installed with two elastic clamping plates (10), the outer peripheral wall of the limiting column (9) is fixedly installed with two mounting seats (11), the inside of the mounting seat (11) is slidably connected with a fastening screw (12), and the bottom outer wall of the limiting column (9) is fixedly installed with a rhombic clamping column (13).

3. The cross drill for mining according to claim 2, characterized in that: The inside of the installation ring (8) is provided with two sliding holes, and the limiting column (9) is slidably connected in the sliding hole.

4. The cross drill for mining as claimed in claim 2, wherein: The number of the elastic clamping plates (10) is four, the elastic clamping plates (10) are at an inclined angle, and the elastic clamping plates (10) are attached to the bottom outer wall of the installation ring (8).

5. The cross drill for mining as claimed in claim 2, wherein: The inside of the installation ring (8) is provided with four thread grooves, the fastening screw (12) is threadedly connected in the inside of the thread groove through the inside of the mounting seat (11) and is appropriately sized.

6. The cross drill for mining as claimed in claim 2, wherein: The fastening bolt (7) comprises a screw and a nut, and the rhombic clamping column (13) is slidably connected between two adjacent nuts.

7. The cross drill for mining as claimed in claim 1, wherein: The bottom of the drill rod (2) is provided with a positioning groove, and the positioning column (3) is slidably connected in the inside of the positioning groove and is appropriately sized.

8. The cross drill for mining as claimed in claim 2, wherein: The positioning plate (4) is arc-shaped, an arc-shaped groove is formed in the side of the positioning plate (4) away from the drill rod (2), the semi-annular metal mounting pad (6) is slidably connected in the inside of the arc-shaped groove and is appropriately sized, two semi-annular metal mounting pads (6) form a metal ring, and the metal ring is slidably connected between the four limiting plates (5).

9. The cross drill for mining according to claim 8, characterized in that: The inside of the metal ring and the limiting plate (5) is provided with a mounting hole, the number of the mounting holes of the metal ring is four, the number of the mounting holes of the limiting plate (5) is two, the fastening bolt (7) is slidably installed in the inside of the mounting hole and is appropriately sized, and the diameter of the mounting hole is larger than the diameter of the limiting column (9).

10. The cross drill for mining as claimed in claim 1, wherein: The cross drill bit (1) is movably installed at the bottom of the drill rod (2).

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