Coal mining machine cutting pick cylindrical drill with adjusting structure

Abstract

The utility model discloses a coal mining machine cutting tooth cylindrical drill with an adjusting structure, which comprises a cylindrical drill body, one end of the cylindrical drill body is provided with an internal spline, the other end of the internal spline is integrally provided with a first limiting piece, an inner cavity of the internal spline is meshed with a slidable external spline, one side of the external spline is provided with a second limiting piece capable of penetrating through the first limiting piece, and the second limiting piece is provided with a second limiting piece capable of penetrating through the second limiting piece. The internal spline and the external spline are meshed with each other and matched with the first limiting piece and the second limiting piece, so that the internal spline and the external spline can be connected in a sliding mode, the electric push rod extends out to push the first connecting rod connected with the electric push rod to rotate, and the distance between the flange plate and the internal spline can be adjusted through the adjusting assembly. The first connecting rod pushes the second connecting rod to drive the flange plate to move, so that the outer spline is driven to extend out of the inner spline, even if the barrel drill body extends out, the mining depth can be adjusted along with extension of the barrel drill body, and connection between the barrel drill body and an existing transmission part is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of pick barrel drills, in particular to a pick barrel drill for a coal mining machine with an adjustment structure. Background Art

[0002] The mining of thin and ultra-thin coal seams has successively adopted blasting, coal cutter combined with blasting, ordinary mechanized coal mining and comprehensive mechanized coal mining. Coal mining machine pick barrel drill is a commonly used drill, but in the prior art, coal mining machine pick barrel drill generally does not have an adjustable telescopic structure, which is not convenient for adjusting the cutting depth. For this reason, we propose a coal mining machine pick barrel drill with an adjustment structure. Utility Model Content

[0003] The utility model aims to provide a pick barrel drill for a coal mining machine with an adjustment structure to solve the problems raised by the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coal mining machine pick barrel drill with an adjustment structure, comprising a barrel drill body, one end of the barrel drill body is installed with an internal spline, the other end of the internal spline is integrally formed with a first limit piece, the inner cavity of the internal spline is meshed with a slidable external spline, one side of the external spline is installed with a second limit piece that can penetrate the first limit piece, the second limit piece is connected with a flange, and the flange can be adjusted to have a spacing with the internal spline by an adjustment component, the adjustment component comprises a first connecting rod, a second connecting rod, and an electric push rod, the outer wall of the internal spline is symmetrically hinged to two groups of the first connecting rods, the outer wall of the flange is symmetrically hinged to two groups of the second connecting rods, the first connecting rod is hinged to the second connecting rod, one side of the first connecting rod is movably connected to the output end of the electric push rod, and the other end of the electric push rod is hinged to the barrel drill body.

[0005] Preferably, a first baffle is welded on the outer wall of the barrel drill body in a threaded shape, and a plurality of groups of first cutting teeth are equidistantly mounted on the outer wall of the first baffle.

[0006] Preferably, a second baffle is welded to the outer wall of the end of the barrel drill body away from the internal spline, and a tooth seat is installed on the second baffle at an angle equidistantly around the end away from the internal spline. The tooth seat is plug-in connected to a second pick, and the second pick is locked by a fastening bolt.

[0007] Preferably, the fastening bolt is threadedly connected to the outer wall of the tooth seat, and the threaded end thereof can be inserted into the second cutting tooth.

[0008] Preferably, a plurality of sets of third cutting teeth are installed at one end of the barrel drill body away from the internal spline.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. The utility model meshes the inner spline with the outer spline, and cooperates with the first limit piece and the second limit piece to make the two slidably connected. By extending the electric push rod, the first connecting rod connected thereto can be pushed to rotate, and the first connecting rod pushes the second connecting rod to drive the flange to move, thereby driving the outer spline to extend from the inner spline, even if the barrel drill body is extended. Compared with the prior art, as the barrel drill body is extended, the mining depth can be adjusted, and it will not affect the connection between the barrel drill body and the existing transmission parts.

[0011] 2. The first pick, the second pick and the third pick of the utility model are all used for coal mining. The first baffle is threaded, so that the raw coal can flow out along the first baffle after the pick has mined coal, thereby playing a guiding role. By rotating the fastening bolt, the bolt can penetrate into the tooth seat, thereby fixing the second pick connected to the tooth seat in a plug-in manner, thereby facilitating the disassembly and assembly of the pick and facilitating replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a left front schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a right rear schematic diagram of the overall structure of the utility model;

[0014] Figure 3 It is a half-exploded view of the overall structure of the utility model.

[0015] In the figure: 1. barrel drill body, 2. internal spline, 3. first limit piece, 4. external spline, 5. second limit piece, 6. flange, 7. first connecting rod, 8. second connecting rod, 9. electric push rod, 10. first baffle, 11. first pick, 12. second baffle, 13. tooth seat, 14. second pick, 15. fastening bolt, 16. third pick. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] Embodiment 1

[0018] Please refer to Figure 1-3As shown, the utility model provides a coal mining machine pick barrel drill with an adjustment structure, including a barrel drill body 1, one end of the barrel drill body 1 is installed with an internal spline 2, the other end of the internal spline 2 is integrally formed with a first limit piece 3, the inner cavity of the internal spline 2 is meshed with a slidable external spline 4, one side of the external spline 4 is installed with a second limit piece 5 that can penetrate the first limit piece 3, the second limit piece 5 is connected with a flange 6, the flange 6 can adjust the distance with the internal spline 2 through an adjustment component, the adjustment component includes a first connecting rod 7, a second connecting rod 8, and an electric push rod 9, the outer wall of the internal spline 2 is symmetrically hinged with two groups of first connecting rods 7, the outer wall of the flange 6 is symmetrically hinged with two groups of second connecting rods 8, the first connecting rod 7 is hinged with the second connecting rod 8, one side of the first connecting rod 7 is movably connected to the output end of the electric push rod 9, and the other end of the electric push rod 9 is hinged to the barrel drill body 1.

[0019] In this embodiment, the flange 6 cooperates with the screws to facilitate the installation of the drill body 1, the internal spline 2 and the external spline 4 are meshed with each other, and cooperate with the first limit piece 3 and the second limit piece 5 to make the two slidingly connected, and the electric push rod 9 is extended to push the first connecting rod 7 connected thereto to rotate, and the first connecting rod 7 pushes the second connecting rod 8 to drive the flange 6 to move, thereby driving the external spline 4 to extend from the internal spline 2, even if the drill body 1 is extended. Compared with the prior art, as the drill body 1 is extended, the mining depth can be adjusted, and it will not affect the connection between the drill body 1 and the existing transmission parts.

[0020] Please refer to Figure 1-3 As shown, the outer wall of the barrel drill body 1 is welded with a first baffle 10 in a threaded shape, and a plurality of groups of first cutting teeth 11 are equidistantly installed on the outer wall of the first baffle 10, and a second baffle 12 is welded to the outer wall of the barrel drill body 1 away from the internal spline 2, and the second baffle 12 is circumferentially equidistantly inclined and installed with a tooth seat 13 toward the end away from the internal spline 2, and the tooth seat 13 is plug-in connected to the second cutting tooth 14, and the second cutting tooth 14 is locked by a fastening bolt 15, and the fastening bolt 15 is threadedly connected to the outer wall of the tooth seat 13, and the threaded end of the fastening bolt 15 can be inserted into the second cutting tooth 14, and a plurality of groups of third cutting teeth 16 are installed at the end of the barrel drill body 1 away from the internal spline 2.

[0021] In this embodiment, the first pick 11, the second pick 14 and the third pick 16 are all used for coal mining. The first baffle 10 is threaded, and after the picks have mined coal, the raw coal can flow out along the first baffle 10, thereby playing a guiding role. By rotating the fastening bolt 15, the bolt is inserted into the tooth seat 13 to fix the second pick 14 connected to the tooth seat 13 in a plug-in manner, thereby facilitating the disassembly and assembly of the picks and facilitating replacement.

[0022] Working principle: First, the inner spline 2 and the outer spline 4 are meshed with each other, and cooperate with the first limit piece 3 and the second limit piece 5 to make the two slidably connected. By extending the electric push rod 9, the first connecting rod 7 connected thereto can be pushed to rotate, and the first connecting rod 7 pushes the second connecting rod 8, driving the flange 6 to move, thereby driving the outer spline 4 to extend from the inner spline 2, even if the barrel drill body 1 is extended. Compared with the prior art, as the barrel drill body 1 is extended, the mining depth can be adjusted, and it will not affect the connection between the barrel drill body 1 and the existing transmission parts. The first pick 11, the second pick 14 and the third pick 16 are all used for coal mining. The first baffle 10 is threaded, and after the pick mining, the raw coal can flow out along the first baffle 10, which plays a guiding role. By rotating the fastening bolt 15, it is penetrated into the tooth seat 13, and the second pick 14 plug-in connected to the tooth seat 13 is fixed, which is convenient for disassembly and assembly of the pick, and convenient for replacement.

[0023] The contents not described in detail in this specification belong to the prior art known to professionals in this field.

[0024] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A coal mining machine pick drill with an adjustment structure, comprising a drill body (1), characterized in that: An inner spline (2) is installed at one end of the barrel drill body (1), and a first limiting member (3) is integrally formed at the other end of the inner spline (2). The inner cavity of the inner spline (2) is meshed with a slidable outer spline (4). A second limiting member (5) that can penetrate the first limiting member (3) is installed on one side of the outer spline (4). The second limiting member (5) is connected to a flange (6). The flange (6) can be adjusted to have a spacing with the inner spline (2) by an adjustment component. The adjustment component comprises a first connecting rod (7), a second connecting rod (8), and an electric push rod (9). The outer wall of the inner spline (2) is symmetrically hinged to two groups of the first connecting rods (7), and the outer wall of the flange (6) is symmetrically hinged to two groups of the second connecting rods (8). The first connecting rod (7) is hinged to the second connecting rod (8). One side of the first connecting rod (7) is movably connected to the output end of the electric push rod (9), and the other end of the electric push rod (9) is hinged to the barrel drill body (1).

2. A coal mining machine pick drill with an adjustment structure according to claim 1, characterized in that: The outer wall of the barrel drill body (1) is welded with a first baffle (10) in a threaded shape, and a plurality of groups of first cutting teeth (11) are equidistantly mounted on the outer wall of the first baffle (10).

3. A coal mining machine pick drill with an adjustment structure according to claim 1, characterized in that: A second baffle (12) is welded to the outer wall of the end of the barrel drill body (1) away from the internal spline (2); a tooth seat (13) is installed on the second baffle (12) at an angle and equidistantly around the circumference of the end away from the internal spline (2); a second pick (14) is pluggably connected to the tooth seat (13); and the second pick (14) is locked by a tightening bolt (15).

4. A coal mining machine pick barrel drill with an adjustment structure according to claim 3, characterized in that: The fastening bolt (15) is threadedly connected to the outer wall of the tooth seat (13), and the threaded end of the fastening bolt (15) can be inserted into the second cutting tooth (14).

5. The coal mining machine pick barrel drill with an adjustment structure according to claim 1, characterized in that: A plurality of sets of third cutting teeth (16) are installed on one end of the barrel drill body (1) away from the internal spline (2).

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