Spiral cutting pick

Abstract

The utility model provides a spiral cutting pick which comprises a cutting pick body, a butt joint groove, a limiting clamping groove, a butt joint sleeve, a positioning block, a limiting clamping block, a first thread groove, a connecting base and an abutting column, the butt joint groove is formed in the upper end face of the cutting pick body, the limiting clamping groove is formed in the butt joint groove, and the butt joint sleeve is arranged above the cutting pick body. A positioning block is arranged on the outer side face of the butt-joint sleeve, a limiting clamping block is rotationally arranged in the butt-joint sleeve, a first threaded groove is formed in the upper end of the inner wall of the butt-joint sleeve, a connecting base is arranged above the butt-joint sleeve, and an abutting column is welded to the lower portion of the connecting base. And through the design of the butt joint sleeve and the limiting clamping block, the cutting pick body can be conveniently and rapidly mounted or dismounted, use is easy and convenient, and practicability is high.

Description

Technical Field

[0001] This utility model is a helical cutting tooth, belonging to the field of cutting tooth technology. Background Technology

[0002] Cutting teeth are parts on mining and tunneling machines, mainly used in coal mining and engineering equipment such as roadways, tunnels, and surface trenching. They are used in equipment such as coal mining machines, tunneling machines, and milling machines. Cutting teeth are one of the most consumed parts in engineering equipment and are replaced frequently.

[0003] Chinese patent CN220167929U proposes a spiral cutting tooth. Although the spiral discharge channel allows the soil generated during drilling to be discharged smoothly, and the cutting tooth body is connected and fixed to the connecting shaft by a collar and screws, soil and gravel may clog the screw holes during actual tunneling, making disassembly inconvenient and hindering the installation and disassembly of the cutting tooth body. Therefore, it has low practicality. There is an urgent need for a spiral cutting tooth to solve the above problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a spiral cutting tooth to solve the problems mentioned in the background technology. This utility model has a reasonable structure. Through the design of the docking sleeve and the limiting block, it is easy to quickly install or disassemble the cutting tooth body. It is simple and convenient to use and has strong practicality.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a spiral cutting tooth, comprising a cutting tooth body, a mating groove, a limiting groove, a mating sleeve, a positioning block, a limiting block, a first threaded groove, a connecting seat, and an abutting post. The upper end face of the cutting tooth body is provided with a mating groove, and a limiting groove is provided inside the mating groove. A mating sleeve is provided above the cutting tooth body, a positioning block is provided on the outer side of the mating sleeve, a limiting block is rotatably provided inside the mating sleeve, a first threaded groove is provided on the upper end of the inner wall of the mating sleeve, a connecting seat is provided above the mating sleeve, and an abutting post is welded below the connecting seat.

[0006] Furthermore, the outer side of the docking sleeve is provided with a through groove, and a rotating connection groove is provided inside the through groove. There are four sets of through grooves of the same specifications.

[0007] Furthermore, the limiting block is provided with rotating connecting shafts on both sides, and the limiting block is rotatably engaged with the rotating connecting groove through the rotating connecting shafts. The limiting block is trapezoidal in shape.

[0008] Furthermore, the docking sleeve and the docking groove are engaged with each other, and four sets of limit slots and limit blocks of equal specifications are provided, with the limit blocks and limit slots engaging with each other.

[0009] Furthermore, a positioning groove is provided inside the docking groove, and two sets of positioning grooves of the same specification are provided. The docking sleeve is slidably engaged with the positioning groove through a positioning block.

[0010] Furthermore, a second threaded groove is provided at the lower end of the outer side of the connecting seat, and the second threaded groove meshes with the first threaded groove.

[0011] Furthermore, the abutting post slides and engages with the inner side of the docking sleeve, and the outer side of the cutting tooth body is provided with a spiral discharge groove.

[0012] Furthermore, a drive shaft is provided on the upper surface of the connecting seat, and the connecting seat is connected to an external driving device through the drive shaft.

[0013] The beneficial effects of this utility model are as follows: This utility model provides a spiral cutting tooth. Because it adds a first threaded groove, a second threaded groove, a mating sleeve, a limiting block, and a limiting slot, when the cutting tooth body needs to be replaced, the external driving device rotates in the opposite direction and retracts the tooth. This causes the first threaded groove and the second threaded groove to loosen continuously until the abutment post can be removed from the inner side of the mating sleeve. After the abutment post is no longer abutting, the limiting block and the limiting slot will no longer engage, thus releasing the connection between the mating sleeve and the cutting tooth body, which facilitates the replacement of a new cutting tooth body. Attached Figure Description

[0014] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0015] Figure 1 This is a schematic diagram of the structure of a spiral cutting tooth according to the present invention;

[0016] Figure 2 This is a schematic diagram of the disassembly structure of a spiral cutting tooth according to the present invention;

[0017] Figure 3 This is a partial cross-sectional view of a spiral cutting tooth according to the present invention.

[0018] Figure 4 This is a schematic diagram of the structure of the connecting sleeve in the spiral cutting tooth according to the present invention;

[0019] Figure 5 This is a cross-sectional view of the connecting sleeve in a spiral cutting tooth according to the present invention.

[0020] Figure 6 This is a cross-sectional view of a spiral cutting tooth according to the present invention.

[0021] In the figure: 1-cutting tooth body, 11-spiral discharge groove, 2-butt groove, 21-positioning groove, 3-limiting slot, 4-butt sleeve, 41-through groove, 42-rotational connection groove, 5-positioning block, 6-limiting block, 61-rotational connection shaft, 7-first threaded groove, 8-connecting seat, 81-drive shaft, 82-second threaded groove, 9-abutting post. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Please see Figures 1-6 This utility model provides a technical solution: a spiral cutting tooth, including a cutting tooth body 1, a docking groove 2, a limiting groove 3, a docking sleeve 4, a positioning block 5, a limiting block 6, a first threaded groove 7, a connecting seat 8, and an abutment post 9. The cutting tooth body 1 has a docking groove 2 on its upper end face, and a limiting groove 3 is formed inside the docking groove 2. The docking sleeve 4 is provided above the cutting tooth body 1, and a positioning block 5 is provided on the outer side of the docking sleeve 4. A limiting block 6 is rotatably provided inside the docking sleeve 4. A first threaded groove 7 is provided at the upper end of the inner wall of the docking sleeve 4. A connecting seat 8 is provided above the docking sleeve 4, and an abutment post 9 is welded below the connecting seat 8. This design solves the problem that the original spiral cutting tooth is not convenient to install and disassemble.

[0024] As the first embodiment of this utility model: a through groove 41 is provided on the outer side of the docking sleeve 4, and the limiting block 6 can rotate on the inner wall of the through groove 41. A rotating connecting groove 42 is provided inside the through groove 41. Four sets of through grooves 41 are provided with the same specifications. Rotating connecting shafts 61 are provided on both sides of the limiting block 6. The limiting block 6 is rotatably engaged with the rotating connecting groove 42 through the rotating connecting shafts 61. The rotating connecting shafts 61 and the rotating connecting groove 42 can fix the position of the limiting block 6. The limiting block 6 can rotate freely about the rotating connecting shaft 61 as the center. The limiting block 6 is trapezoidal. The docking sleeve 4 and the docking groove 2 are engaged with each other. Four sets of limiting grooves 3 are provided with the limiting block 6 with the same specifications. The limiting block 6 and the limiting groove 3 are engaged with each other. The design of the limiting block 6 and the limiting groove 3 can fix the docking sleeve 4. The position between the cutting tooth body 1 and the positioning groove 2 is provided with a positioning groove 21 inside. There are two sets of positioning grooves 21 of the same specifications. The positioning sleeve 4 is slidably engaged with the positioning groove 21 through the positioning block 5. The design of the positioning block 5 and the positioning groove 21 can position the installation angle of the positioning sleeve. The lower end of the outer side of the connecting seat 8 is provided with a second threaded groove 82. The second threaded groove 82 is engaged with the first threaded groove 7. The first threaded groove 7 and the second threaded groove 82 can fix the position between the connecting seat 8 and the connecting sleeve 4. The abutment post 9 is slidably engaged with the inner side of the connecting sleeve 4. The outer side of the cutting tooth body 1 is provided with a spiral discharge groove 11. The upper end face of the connecting seat 8 is provided with a drive shaft 81. The connecting seat 8 is connected to an external drive device through the drive shaft 81. The drive shaft 81 facilitates the connection of the connecting seat 8.

[0025] As a second embodiment of this utility model: When the user installs the cutting tooth body 1, the docking sleeve 4 is first inserted into the docking groove 2. The design of the positioning block 5 and the positioning groove 21 can position the insertion angle of the docking sleeve 4. During the insertion process, the inner wall of the docking groove 2 will press and abut against the upper inclined surface of the limiting block 6, causing the limiting block 6 to rotate inward and retract until the docking sleeve 4 is inserted to the bottom, at which point the limiting block 6 and the limiting groove 3 are aligned. Then, the cutting tooth body 1 is brought close to the connecting seat 8 through the docking sleeve 4, and the abutment post 9 is inserted into the docking sleeve 4. The outer side of the abutment post 9 presses and abuts against the inner side of the limiting block 6, causing the limiting block 6 to extend outward along the through groove 41 and engage with the limiting groove 3, thereby fixing the position of the docking sleeve 4 and the cutting tooth body 1. Subsequently, the external drive device drives the connecting seat 8 to rotate in the forward direction, causing the first threaded groove 7 and the second threaded groove 82 to mesh and tighten, making it ready for use. At the same time, the forward rotation direction is also the tooth-feeding direction of the cutting tooth body 1. As the cutting tooth body 1 feeds, the first threaded groove 7 and the second threaded groove 82 will be continuously tightened, and the spiral discharge channel 11 will discharge the soil during the excavation process. When it is necessary to replace the cutting tooth body 1, the external drive device is rotated in the reverse direction to retract the teeth, causing the first threaded groove 7 and the second threaded groove 82 to be continuously loosened until the abutment post 9 can be removed from the inner side of the docking sleeve 4. After the abutment post 9 is no longer abutting, the limiting block 6 and the limiting groove 3 will no longer engage, and the connection between the docking sleeve 4 and the cutting tooth body 1 can be released, thus facilitating the replacement of the new cutting tooth body 1.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A helical cutting tooth, comprising a cutting tooth body, a mating groove, a limiting groove, a mating sleeve, a positioning block, a limiting block, a first threaded groove, a connecting seat, and an abutment post, characterized in that: The upper end face of the cutting tooth body is provided with a docking groove, and a limit slot is provided inside the docking groove. A docking sleeve is provided above the cutting tooth body, and a positioning block is provided on the outer side of the docking sleeve. A limit block is rotatably provided inside the docking sleeve. A first threaded groove is provided at the upper end of the inner wall of the docking sleeve. A connecting seat is provided above the docking sleeve, and an abutment post is welded below the connecting seat.

2. The helical cutting tooth according to claim 1, characterized in that: The outer side of the docking sleeve is provided with a through groove, and the inside of the through groove is provided with a rotating connection groove. There are four sets of through grooves of the same specifications.

3. A helical cutting tooth according to claim 2, characterized in that: The limiting block is provided with rotating connecting shafts on both sides, and the limiting block is rotatably engaged with the rotating connecting groove through the rotating connecting shafts. The limiting block is trapezoidal.

4. A helical cutting tooth according to claim 1, characterized in that: The docking sleeve and the docking groove engage with each other, and four sets of limit slots and limit blocks of equal specifications are provided, with the limit blocks and limit slots engaging with each other.

5. A helical cutting tooth according to claim 1, characterized in that: The docking groove is provided with a positioning groove inside. There are two sets of positioning grooves of the same specification. The docking sleeve is slidably engaged with the positioning groove by a positioning block.

6. A helical cutting tooth according to claim 1, characterized in that: The lower end of the outer side of the connector is provided with a second threaded groove, which meshes with the first threaded groove.

7. A helical cutting tooth according to claim 1, characterized in that: The abutting post slides and engages with the inner side of the docking sleeve, and the outer side of the cutting tooth body is provided with a spiral discharge groove.

8. A helical cutting tooth according to claim 1, characterized in that: The upper surface of the connecting seat is provided with a drive shaft, and the connecting seat is connected to an external driving device through the drive shaft.

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