Self-rotating cutting pick for coal mine and tunneling

Abstract

The utility model relates to the technical field of cutting picks, in particular to a self-rotating cutting pick for coal mine and tunnel boring, which comprises a cutting pick body, a fixed column is mounted in the cutting pick body, a cutting pick head is mounted on the top surface of the fixed column, a mounting bearing is mounted on the outer surface of the fixed column, a ladder frame is mounted on the top surface of the cutting pick head, and the ladder frame is mounted on the outer surface of the fixed column. An alloy tool bit is mounted on the top surface of the step frame, the step frame is step-shaped and is provided with four groups of steps, a spiral assembly is arranged on the outer surface of the cutting pick head, and the spiral assembly comprises a W-shaped abutting block. According to the utility model, raw materials can be quickly broken through the sharp head, so that not only can the outer surfaces of the alloy tool bit and the cutting pick head be protected, but also the contact area with the raw materials can be enlarged, and the raw materials can be quickly dispersed.

Description

Technical Field

[0001] This utility model relates to the field of cutting tooth technology, specifically a self-rotating cutting tooth for coal mine and tunnel excavation. Background Technology

[0002] As an important component of coal mining machines and tunneling machines, the cutting teeth directly affect the working efficiency of these machines.

[0003] In response, existing technology patent publication number CN221879379U discloses a highly impact-resistant spin-rotating pick-shaped cutting tooth, comprising a cutting tooth body, a cutting tooth head disposed on the upper surface of the cutting tooth body, a carbide cutting tip fixedly sleeved on the inner surface of the cutting tooth head, and a groove formed on the upper surface of the cutting tooth body; a spin mechanism disposed on the cutting tooth head, a self-selection mechanism used to reduce the uneven wear of the cutting tooth, the self-selection mechanism including a conical helical surface disposed on the outer surface of the carbide cutting tip; and a disassembly and assembly mechanism disposed on the cutting tooth body, used for disassembling and replacing the cutting tooth head, the disassembly and assembly mechanism including a fixing post disposed on the lower surface of the cutting tooth head. This highly impact-resistant spin-rotating pick-shaped cutting tooth not only allows the cutting tooth to rotate along the force direction of the conical helical surface, but also allows the cutting tooth head to rotate independently when the cutting resistance is small, effectively preventing uneven wear of the carbide cutting tip.

[0004] However, in actual use, the cutter head comes into direct contact with raw materials such as coal, and its outer surface does not have a layered rotating component. Therefore, the cutter will be worn during use. At the same time, the conical spiral surface in the existing technology does not have a sharp block to directly contact the raw material, so the raw material is still in a clump and cannot be quickly broken down. Therefore, improving and perfecting the above-mentioned problems has become an urgent issue to be solved. Utility Model Content

[0005] The purpose of this invention is to provide a self-rotating cutting tooth for coal mines and tunnel excavation, in order to solve the problems mentioned in the background art, where the cutting head directly contacts raw materials such as coal during use, and its outer surface does not have a layered rotating component, so the cutting head will be worn during use. At the same time, the conical spiral surface in the prior art does not have a sharp block to directly contact the raw material, so the raw material is still in a clump and cannot be quickly broken off.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a self-rotating cutting tooth for coal mines and tunnel excavation, comprising a cutting tooth body, a fixing column installed inside the cutting tooth body, a cutting tooth head installed on the top surface of the fixing column, a mounting bearing installed on the outer surface of the fixing column, a stepped frame installed on the top surface of the cutting tooth head, an alloy cutter head installed on the top surface of the stepped frame, the stepped frame being stepped and having four sets of steps, and a spiral assembly provided on the outer surface of the cutting tooth head, the spiral assembly including an abutment block, the abutment block being "W" shaped.

[0007] Preferably, the abutment block is installed on the outer surface of the cutting tooth head, and inclined plates are installed on both the front and rear surfaces of the abutment block, and a stabilizing ring is installed on one side of the surface of the cutting tooth body.

[0008] Preferably, the outer surface of the stepped frame is fitted with an alloy blade, which is triangular in shape.

[0009] Preferably, the right side surface of the fixing column is provided with a positioning hole and a positioning groove from top to bottom, and the centers of the positioning hole and the positioning groove are on the same plane.

[0010] Preferably, a locking assembly is installed on the outer surface of the cutting tooth body. The locking assembly includes a mounting cylinder, which is installed on the outer surface of the cutting tooth body.

[0011] Preferably, an mounting plate is mounted on the top surface of the mounting cylinder, and the mounting plate has an adapter hole inside.

[0012] Preferably, a positioning pin is inserted and installed inside the adapter hole, and the positioning pin is adapted to the positioning hole. A reinforcing column is installed inside the mounting cylinder, and the reinforcing column is adapted to the positioning groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This self-rotating cutting tooth for coal mines and tunnel excavation can directly contact the surrounding raw materials through the setting of the contact block, and the contact block is equipped with two sets of sharp heads. The sharp heads can quickly break off the raw materials. Therefore, this setting can not only protect the outer surface of the alloy cutter head and the cutting tooth head, but also increase the contact area with the raw materials, so that the raw materials can be dispersed quickly.

[0015] 2. This self-rotating cutting tooth for coal mines and tunnel excavation enters the positioning groove through a reinforcing column, thereby enabling the cutting tooth body and the fixed column to be quickly installed and fixed, resulting in a better overall fixing effect and easier operation. It avoids the positional deviation caused by the previous installation using spring ball clamps, demonstrating the functionality of the design. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a three-dimensional schematic diagram of the fixed column and cutting tooth head structure of this utility model;

[0018] Figure 3 This is a three-dimensional schematic diagram of the stepped frame and alloy cutter head structure of this utility model;

[0019] Figure 4 This is a three-dimensional schematic diagram of the contact block structure of this utility model;

[0020] Figure 5 This is a schematic diagram showing the disassembled cutting tooth body and reinforcing column structure of this utility model.

[0021] In the diagram: 1. Cutting tooth body; 2. Fixing post; 3. Mounting bearing; 4. Cutting tooth head; 5. Stepped frame; 6. Carbide cutting tool; 7. Carbide cutting tip; 8. Contact block; 9. Inclined plate; 10. Positioning hole; 11. Positioning groove; 12. Mounting cylinder; 13. Mounting plate; 14. Adapter hole; 15. Positioning pin; 16. Reinforcing post; 17. Stabilizing ring. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-5 One embodiment provided by this utility model:

[0024] A self-rotating cutting tool for coal mines and tunnel excavation is disclosed in this application. The cutting tool body 1, fixing column 2, cutting tool head 4, and alloy cutter head 7 used in this application are all commercially available products. Their principles and connection methods are well-known prior art and will not be described in detail here. The cutting tool body 1 includes a fixing column 2 installed inside. The cutting tool head 4 is mounted on the top surface of the fixing column 2. A mounting bearing 3 is mounted on the outer surface of the fixing column 2. A stepped frame 5 is mounted on the top surface of the cutting tool head 4, and an alloy cutter head 7 is mounted on the top surface of the stepped frame 5. The stepped frame 5 is stepped and has four sets of steps. A helical assembly is provided on the outer surface of the cutting tool head 4, including a contact block 8, which is W-shaped. The contact block 8 is mounted on the outer surface of the cutting tool head 4, and inclined plates 9 are mounted on both the front and rear surfaces of the contact block 8. A stabilizing ring 17 is mounted on one side of the surface of the cutting tool body 1. An alloy blade 6, which is triangular in shape, is mounted on the outer surface of the stepped frame 5. The stepped arrangement of the stepped frame 5 allows the surrounding raw materials to rotate simultaneously as the alloy cutter head 7 rotates. This ensures that the outer surface of the stepped frame 5 contacts the raw materials, increasing the contact area between the materials and the stepped frame 5. This allows for stepped rotation and excavation of the materials. Simultaneously, the alloy blades 6 break and separate the materials, preventing them from accumulating and applying greater pressure to the alloy cutter head 7. The contact block 8 directly contacts the surrounding materials and has two sets of sharp points that quickly break off the materials. Therefore, this arrangement not only protects the outer surfaces of the alloy cutter head 7 and the cutting tooth head 4 but also expands the contact area with the materials, allowing for rapid dispersion of the materials.

[0025] The right side surface of the fixed post 2 has a positioning hole 10 and a positioning groove 11 arranged sequentially from top to bottom, with the centers of the positioning hole 10 and the positioning groove 11 on the same plane. A locking assembly is installed on the outer surface of the cutting tooth body 1. The locking assembly includes a mounting cylinder 12, which is installed on the outer surface of the cutting tooth body 1. A mounting plate 13 is installed on the top surface of the mounting cylinder 12, and an adapter hole 14 is provided inside the mounting plate 13. A positioning pin 15 is inserted into the adapter hole 14, and the positioning pin 15 is mutually adapted to the positioning hole 10. A reinforcing post 16 is installed inside the mounting cylinder 12, and the reinforcing post 16 is mutually adapted to the positioning groove 11. During installation, first, the fixing post 2 is installed inside the cutting tooth body 1. Then, the positioning hole 10 and the positioning groove 11 are aligned with the adapter hole 14 and the mounting cylinder 12, respectively. First, the positioning pin 15 is inserted into the adapter hole 14 to position the cutting tooth body 1 and the fixing post 2. Then, the reinforcing post 16 is installed inside the mounting cylinder 12 and the reinforcing post 16 also enters the positioning groove 11. This allows the cutting tooth body 1 and the fixing post 2 to be quickly and securely installed, resulting in a better overall fixation effect and easier operation. This avoids the positional deviation caused by the previous method of fixing with a spring ball.

[0026] Working principle: The stepped design of the stepped frame 5 allows the surrounding raw materials to rotate simultaneously as the alloy cutter head 7 rotates. This causes the outer surface of the stepped frame 5 to come into contact with the raw materials, increasing the contact area between the raw materials and the stepped frame 5. This allows the raw materials to be rotated and excavated in a stepped manner. At the same time, the alloy blades 6 can also break and separate the raw materials, preventing them from piling up and putting more pressure on the alloy cutter head 7. The contact block 8 can directly contact the surrounding raw materials, and the contact block 8 is equipped with two sets of sharp points. These sharp points can quickly break off the raw materials. Therefore, this design not only protects the outer surfaces of the alloy cutter head 7 and the cutting tooth head 4, but also...

[0027] During installation, first, the fixing post 2 is installed inside the cutting tooth body 1. Then, the positioning hole 10 and the positioning groove 11 are aligned with the adapter hole 14 and the mounting cylinder 12, respectively. First, the positioning pin 15 is inserted into the adapter hole 14, thereby positioning the cutting tooth body 1 and the fixing post 2. Then, the reinforcing post 16 is installed inside the mounting cylinder 12, and the reinforcing post 16 also enters the positioning groove 11, thereby quickly installing and fixing the cutting tooth body 1 and the fixing post 2. The above is the working principle of this utility model.

[0028] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A self-rotating pick for coal mines and tunneling, comprising a pick body (1), a fixed column (2) is mounted inside the pick body (1), a pick head (4) is mounted on the top surface of the fixed column (2), and a mounting bearing (3) is mounted on the outer surface of the fixed column (2), characterized in that: The top surface of the cutting tooth (4) is equipped with a step frame (5), and the top surface of the step frame (5) is equipped with an alloy cutter head (7). The step frame (5) is stepped and has four sets of steps. The outer surface of the cutting tooth (4) is provided with a spiral assembly, which includes an abutment block (8) in the shape of a "W".

2. The self-rotating pick according to claim 1, wherein: The abutment block (8) is installed on the outer surface of the cutting tooth head (4), and inclined plates (9) are installed on both the front and rear surfaces of the abutment block (8). A stabilizing ring (17) is installed on one side of the surface of the cutting tooth body (1).

3. The self-rotating pick according to claim 1, wherein: The outer surface of the stepped frame (5) is fitted with an alloy blade (6), which is triangular in shape.

4. The self-rotating pick according to claim 1, wherein: The right side surface of the fixed column (2) is provided with a positioning hole (10) and a positioning groove (11) from top to bottom, and the centers of the positioning hole (10) and the positioning groove (11) are in the same plane.

5. The self-rotating pick according to claim 1, wherein: The outer surface of the cutting tooth body (1) is equipped with a locking assembly, which includes a mounting cylinder (12) and is installed on the outer surface of the cutting tooth body (1).

6. A self-rotating pick according to claim 5, wherein: The mounting plate (13) is mounted on the top surface of the mounting cylinder (12), and the mounting plate (13) has an adapter hole (14) inside.

7. A self-rotating pick according to claim 6, wherein: A positioning pin (15) is inserted into the adapter hole (14), and the positioning pin (15) is adapted to the positioning hole (10). A reinforcing column (16) is installed inside the mounting cylinder (12), and the reinforcing column (16) is adapted to the positioning groove (11).

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