Cutting pick of coal mining machine

Abstract

The utility model relates to the technical field of parts of coal mining machines, in particular to a cutting pick of a coal mining machine, which comprises a cutter body, a cutter head is mounted on the upper portion of the cutter body, and the cutter body is structurally provided with an embedded mounting portion, a middle connecting portion and a cutter head mounting portion sequentially from bottom to top. The middle connecting part is used for connecting the embedded mounting part and the tool bit mounting part, the outer wall of the embedded mounting part is provided with a cutting pick stabilizing device, the cutting pick stabilizing device comprises a lifting module and a forward-extending extrusion module mechanically matched with the lifting module, the lifting module is mounted at the outer position of the left wall of the embedded mounting part, and the forward-extending extrusion module is mounted at the outer position of the right wall of the embedded mounting part. When the embedded installation part is installed, the ascending module is extruded by the installation space to move upwards and generate reasoning on the forward-extending extrusion module, the forward-extending extrusion module is installed in the embedded installation part, and after being pushed by the external force of the ascending module, the forward-extending extrusion module extends out of the right wall of the embedded installation part and abuts against the installation space where the forward-extending extrusion module is located.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining machine parts, in particular to a coal mining machine pick. Background Art

[0002] Coal mining machines are widely used in coal mining operations. The pick is an important mining component on the coal mining machine and is also one of the vulnerable parts in the coal mining machinery. It is the main tool for dropping and crushing coal. Its performance directly affects the production capacity of the coal mining machinery, power consumption, working stability and the service life of other related parts.

[0003] At present, a Chinese patent with publication number CN220059542U discloses a coal mining machine pick, which includes a cutter body, a cutter head, a docking hole and a disassembly groove formed on the cutter body, the cutter body is provided with a mounting groove for the cutter head to be installed and at least one disassembly through hole communicating with the mounting groove is opened, each of the disassembly through holes is provided with a damping detachable plug-in limit rod and a limit structure for limiting the cutter head from being separated from the mounting groove is formed between each limit rod and the cutter head, the cutter body is provided with a drive hole connecting the bottom of the mounting groove with the outside world, and the drive hole is provided on the cutter body. A driving member is provided in the hole, and an ejection assembly is provided between the driving member and the cutter head. The driving member drives the ejection assembly to make the cutter head leave the mounting groove. Although the above-mentioned coal mining machine pick can realize the convenient replacement of the cutter head and reduce the subsequent maintenance time, thereby having better versatility and practical functions, in the structure of this coal mining machine pick, the cutter head is fixed only by using a limit rod to support the limit slot. This structural method of locking the cutter head has low strength. During the high-intensity use of the cutter head, it is easy for the cutter head to break or the cutter head to separate from the cutter body. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the utility model is to provide a coal mining machine pick, and the above technical purpose is achieved through the following technical solutions:

[0005] A coal mining machine pick, characterized in that it includes a cutter body, a cutter head is installed on the upper part of the cutter body, the structure of the cutter body is sequentially provided with an embedded mounting part, an intermediate connecting part and a cutter head mounting part from bottom to top, the intermediate connecting part is used to connect the embedded mounting part and the cutter head mounting part, the cutter head mounting part is inclined to the left compared with the embedded mounting part, the lower end of the embedded mounting part is provided with a lower docking hole, the upper end of the lower docking hole is provided with an upper docking hole, the outer wall of the embedded mounting part is provided with a pick stabilizing device, the pick stabilizing device includes a rising module and a forward extrusion module that mechanically cooperates with the rising module, the rising module is installed at the outer position of the left wall of the embedded mounting part, when the embedded mounting part is installed, the rising module is affected by the squeezing of the installation space and moves upward and generates inference on the forward extrusion module, the forward extrusion module is installed inside the embedded mounting part, and after the forward extrusion module is pushed by the external force of the rising module, it extends from the right wall position of the embedded mounting part and presses against the installation space where it is located.

[0006] Furthermore, the rising module includes a rising slide groove, a limiting column, a rising slider and a front push block. The rising slide groove is opened at the left wall position of the embedded mounting part. The limiting column is at least provided and fixed in the rising slide groove. The rising slider is assembled in the rising slide groove and slidably assembled on the outside of the limiting column. The front push block is fixedly welded to the side wall of the rising slider and moves synchronously with the rising slider. The right side surface of the top of the front push block is provided with an inclined pushing slope.

[0007] Furthermore, the forward extending extrusion module includes a force block, a transverse movable column, a force spring, an intermediate pushing plate, a right fastening plate and a fastening block, the force block is placed at the left end of the embedded mounting part, and the force block is installed at a position above the front pushing block, and its left end is provided with a force inclined surface mechanically matched with the pushing inclined surface, the transverse movable column is at least provided with one, and the transverse movable column is laterally installed in the embedded mounting plate, and it is located inside the embedded mounting part and slides transversely, and a gap groove is provided inside the embedded mounting part, and the gap groove is located above the upper docking hole, the force spring and the intermediate pushing plate are both installed in the space between the gap grooves, the intermediate pushing plate is fixed to the outside of the transverse movable column, one end of the force spring is installed on the right side of the intermediate pushing plate, and the other end is installed on the right end face of the gap groove, the right fastening plate is fixedly welded to the rightmost end of the transverse movable column, the fastening block is at least provided with one group, and the fastening block is welded and fixed to the right end face of the right fastening plate.

[0008] Furthermore, a movable groove for movement of the right fastening plate is provided at the right wall of the embedded mounting portion, and limiting rails welded to the inner wall of the movable groove are provided at both ends of the movable groove, and limiting blocks integrally formed therewith are provided at both ends of the right fastening plate, and the limiting blocks are slidably assembled inside the limiting rails.

[0009] Furthermore, the lower-layer docking hole is in the shape of a curved arc, the upper-layer docking hole is in the shape of a circular hole, and a connecting groove is provided between the upper-layer docking hole and the lower-layer docking hole to open up the spaces between the two.

[0010] Furthermore, a first exhaust groove is provided inside the middle connection part for exhausting the upper docking hole and the lower docking hole, and a second exhaust groove connected to the first exhaust groove is provided inside the embedded connection part, and the lower end of the second exhaust groove extends to the interior of the upper docking hole.

[0011] Furthermore, a cutter head mounting seat is installed inside the cutter head mounting part, and at least one mounting seat positioning column is provided inside the cutter head mounting seat. The mounting seat positioning column passes through the cutter head mounting seat and the cutter head mounting part, and is tightened and fixed by a nut. The root thread of the cutter head is assembled inside the cutter head mounting seat.

[0012] In summary, the utility model has the following beneficial effects:

[0013] ① The cutter head of the utility model is easy to disassemble and install, which helps to realize the convenient replacement of the cutter head and reduce the subsequent maintenance time, thus having better versatility and practical functions;

[0014] ② The utility model is equipped with an exhaust groove inside, which is convenient for exhausting the internal air after docking installation, greatly reducing the installation gap between the pick and the drum, and improving the installation effect;

[0015] ③ The utility model is equipped with a complete set of pick stabilizing devices. During the installation of the pick, the internal mechanical cooperation of the device is utilized to firmly press the installation part inside the installation space, thereby enhancing the stability and reliability of the pick after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application, but do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 It is a front view of the utility model;

[0018] Figure 2 It is a left view of the utility model;

[0019] Figure 3 It is a right view of the utility model;

[0020] Figure 4 It is a cross-sectional view of the utility model;

[0021] Figure 5 It is a schematic diagram of a cutter head and a cutter head mounting seat of the utility model.

[0022] In the figure, 1, blade body; 2, blade head; 3, embedded mounting part; 4, middle connecting part; 5, blade head mounting part; 6, lower docking hole; 7, upper docking hole; 8, rising slide groove; 9, limiting column; 10, rising slider; 11, front push block; 12, pushing inclined plane; 13, force block; 14, transverse movable column; 15, force spring; 16, middle push plate; 17, right fastening plate; 18, fastening block; 19, clearance groove; 20, movable groove; 21, limiting rail; 22, limiting slider; 23, force inclined plane; 24, first exhaust groove; 25, second exhaust groove; 26, blade head mounting seat; 27, mounting seat positioning column. DETAILED DESCRIPTION

[0023] The above and other technical contents, features and functions of the present invention are described in detail below with reference to the attached Figure 1 To Attachment Figure 5 The detailed description of the embodiments will clearly show that the structural contents mentioned in the following embodiments are all based on the drawings in the specification.

[0024] Various exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. Example

[0025] A coal mining machine pick:

[0026] It includes a blade body 1, a blade head 2 is installed on the upper part of the blade body 1, and the structure of the blade body 1 is provided with an embedded mounting portion 3, an intermediate connecting portion 4 and a blade head mounting portion 5 from bottom to top. The intermediate connecting portion 4 is used to connect the embedded mounting portion 3 and the blade head mounting portion 5, and the blade head mounting portion 5 is inclined to the left compared to the embedded mounting portion 3.

[0027] Through the above scheme, the cutter head mounting portion 5 is used to install and fix the position of the cutter head 2. In the present embodiment, the cutter head 2 is also convenient to install and disassemble. Since the cutter head 2 is a wearing part on the cutting tooth, the replaceable structure is particularly important. The damaged cutter head 2 can be replaced in time to maintain the working efficiency of the cutting tooth.

[0028] Furthermore, a cutter head mounting seat 26 is installed inside the cutter head mounting portion 5, and at least one mounting seat positioning column 27 is provided inside the cutter head mounting seat 26. The mounting seat positioning column 27 passes through the cutter head mounting seat 26 and the cutter head mounting portion 5, and is tightened and fixed by a nut. The root of the cutter head 2 is threadedly assembled inside the cutter head mounting seat 26. The above scheme realizes quick disassembly and installation of the cutter head 2. For example, during the installation process, the cutter head mounting seat 26 needs to be placed in an installation station equipped with the cutter head mounting portion 5. In this embodiment, two mounting seat positioning columns 27 are provided. The mounting seat positioning columns 27 are screwed between the cutter head mounting portion 5 and the cutter head mounting seat 26, and are tightened by nuts, so that the position of the cutter head mounting seat 26 is fixed inside the cutter head mounting portion 5. Subsequently, it is only necessary to screw the root of the cutter head 2 into the cutter head mounting seat 26. The disassembly process is the same, and it is only necessary to reverse the installation order.

[0029] A lower layer docking hole 6 is provided at the lower end of the embedded installation portion 3 , and an upper layer docking hole 7 is provided at the upper end of the lower layer docking hole 6 .

[0030] Furthermore, the lower docking hole 6 is in the shape of a curved arc, and the upper docking hole 7 is in the shape of a circular hole. Two groups of hole grooves with docking functions are provided, and the shapes are set to different structures to facilitate better positioning and installation.

[0031] Furthermore, a connecting groove is provided between the upper docking hole 7 and the lower docking hole 6 to connect the spaces between the two, a first exhaust groove 24 is provided inside the middle connecting portion 4 for exhausting the upper docking hole 7 and the lower docking hole 6, and a second exhaust groove 25 connected to the first exhaust groove 24 is provided inside the embedded connecting portion, and the lower end of the second exhaust groove 25 extends to the interior of the upper docking hole 7.

[0032] Through the above solution, the first exhaust groove 24 and the second exhaust groove 25 are directly connected to the upper docking hole 7 and the lower docking hole 6, which facilitates the exhaust of internal gas after positioning and installation, thereby enhancing the reliability of installation.

[0033] The outer wall of the embedded mounting part 3 is provided with a pick stabilizing device, which includes a rising module and a forward extending extrusion module that mechanically cooperates with the rising module. The rising module is installed at the outer position of the left wall of the embedded mounting part 3. When the embedded mounting part 3 is installed, the rising module moves upward due to the squeezing of the installation space and exerts an inference on the forward extending extrusion module. The forward extending extrusion module is installed inside the embedded mounting part 3. After being pushed by the external force of the rising module, the forward extending extrusion module extends from the right wall of the embedded mounting part 3 and presses against the installation space where it is located.

[0034] Furthermore, the rising module includes a rising slot 8, a limiting column 9, a rising slider 10 and a front push block 11. The rising slot 8 is opened at the left wall position of the embedded mounting portion 3. At least one limiting column 9 is provided and fixed in the rising slot 8. The rising slider 10 is assembled in the rising slot 8 and slidably assembled on the outside of the limiting column 9. The front push block 11 is fixedly welded to the side wall of the rising slider 10 and moves synchronously with the rising slider 10. The right side surface of the top of the front push block 11 is provided with an inclined pushing slope 12.

[0035] Furthermore, the forward extrusion module includes a force block 13, a transverse movable column 14, a force spring 15, an intermediate push plate 16, a right fastening plate 17 and a fastening block 18. The force block 13 is placed at the left end of the embedded mounting portion 3, and the force block 13 is installed at a position above the front push block 11, and its left end is provided with a force inclined surface 23 that mechanically cooperates with the push inclined surface 12. At least one transverse movable column 14 is provided, and the transverse movable column 14 is transversely installed in the embedded mounting plate, which is located inside the embedded mounting portion 3 and slides transversely, and the embedded mounting portion 3 A clearance groove 19 is provided inside, and the clearance groove 19 is located above the upper docking hole 7. The force spring 15 and the intermediate push plate 16 are installed in the space between the clearance grooves 19. The intermediate push plate 16 is fixed to the outside of the transverse movable column 14. One end of the force spring 15 is installed on the right side of the intermediate push plate 16, and the other end is installed on the right end surface of the clearance groove 19. The right fastening plate 17 is fixedly welded to the rightmost end of the transverse movable column 14. At least one set of fastening blocks 18 is provided, and the fastening blocks 18 are welded and fixed to the right end surface of the right fastening plate 17.

[0036] Through the above scheme, since the embedded installation part 3 needs to be directly installed in the drum structure matching the pick, after the structure is positioned and installed, affected by space factors, the front push block 11 that was originally in the initial position will gradually rise until the front push block 11 rises to one side of the force block 13, pushing the inclined surface 12 to contact the force inclined surface 23, and the front push block 11 gradually squeezes the position space of the force block 13. The force block 13 is forced to move to the right, and the force block 13 drives the transverse movable column 14 to move to the right. During this process, the middle push plate 16 in the gap groove 19 squeezes the force spring 15 to the right, and the right fastening plate 17 at the rightmost end of the transverse movable column 14 pushes the fastening block 18 to extend to the right. The fastening block 18 itself has a certain deformation ability, and it tightly presses against the installation space on the right side of the embedded installation part 3, thereby achieving the effect of stabilizing and strengthening.

[0037] Furthermore, a movable groove 20 for the right fastening plate 17 to move is provided at the right wall of the embedded installation part 3, and limiting rails 21 welded to the inner wall of the movable groove 20 are provided at both ends of the movable groove 20, and limiting blocks integrally formed therewith are provided at both ends of the right fastening plate 17, and the limiting blocks are slidably assembled inside the limiting rails 21.

[0038] The above is a further detailed description of the present invention in combination with a specific implementation method, and it cannot be determined that the specific implementation of the present invention is limited to this; for technical personnel in the field of the present invention and related technical fields, based on the technical solution of the present invention, the expansion and replacement of operating methods and data should all fall within the protection scope of the present invention.

Claims

1. A coal mining machine pick, characterized in that: The present invention comprises a knife body (1), wherein a knife head (2) is mounted on the upper part of the knife body (1), wherein the structure of the knife body (1) is provided with an embedded mounting portion (3), an intermediate connecting portion (4) and a knife head mounting portion (5) in order from bottom to top, wherein the intermediate connecting portion (4) is used to connect the embedded mounting portion (3) and the knife head mounting portion (5), wherein the knife head mounting portion (5) is inclined to the left relative to the embedded mounting portion (3), wherein a lower layer docking hole (6) is provided at the lower end of the embedded mounting portion (3), and an upper layer docking hole (7) is provided at the upper end of the lower layer docking hole (6), wherein the embedded mounting portion (3) is provided with a lower layer docking hole (6), wherein the embedded mounting portion (3) is provided with a lower layer docking hole (6), wherein the embedded mounting portion (3) is provided with a lower layer docking hole (7) and the lower layer docking hole (6) is provided with an upper layer docking hole (7). The outer wall of the mounting portion (3) is provided with a pick stabilizing device, the pick stabilizing device comprising a rising module and a forward-extending extrusion module that mechanically cooperates with the rising module, the rising module being mounted at an outer position of the left wall of the embedded mounting portion (3), when the embedded mounting portion (3) is installed, the rising module is affected by the squeezing of the mounting space and moves upward and generates a thrust on the forward-extending extrusion module, the forward-extending extrusion module is mounted inside the embedded mounting portion (3), and after being pushed by the external force of the rising module, the forward-extending extrusion module extends from the right wall of the embedded mounting portion (3) and presses against the mounting space where it is located.

2. A coal mining machine pick according to claim 1, characterized in that: The ascending module comprises an ascending chute (8), a limiting column (9), an ascending slider (10) and a front push block (11); the ascending chute (8) is opened at the left wall position of the embedded mounting portion (3); at least one limiting column (9) is provided and fixed in the ascending chute (8); the ascending slider (10) is assembled in the ascending chute (8) and slidably assembled outside the limiting column (9); the front push block (11) is fixedly welded to the side wall of the ascending slider (10) and moves synchronously with the ascending slider (10); the right side surface of the top of the front push block (11) is provided with an inclined pushing slope (12).

3. A coal mining machine pick according to claim 1, characterized in that: The forward extending extrusion module comprises a force block (13), a transverse movable column (14), a force applying spring (15), an intermediate pushing plate (16), a right fastening plate (17) and a fastening block (18); the force block (13) is disposed at the left end of the embedded mounting portion (3), and the force block (13) is installed at a position above the front pushing block (11); a force inclined surface (23) mechanically matched with the pushing inclined surface (12) is provided at the left end of the force block (13); at least one transverse movable column (14) is provided, and the transverse movable column (14) is transversely installed in the embedded mounting plate, and is located inside the embedded mounting portion (3) for transverse sliding; the embedded mounting portion (3) is provided with a force inclined surface (23) mechanically matched with the pushing inclined surface (12); There is a gap groove (19), the gap groove (19) is located above the upper docking hole (7), the force spring (15) and the intermediate push plate (16) are both installed in the space between the gap grooves (19), the intermediate push plate (16) is fixed to the outside of the transverse movable column (14), one end of the force spring (15) is installed on the right side of the intermediate push plate (16), and the other end is installed on the right end surface of the gap groove (19), the right fastening plate (17) is fixedly welded to the rightmost end of the transverse movable column (14), and the fastening block (18) is provided with at least one group, and the fastening block (18) is welded and fixed to the right end surface of the right fastening plate (17).

4. A coal mining machine pick according to claim 3, characterized in that: A movable groove (20) for the right fastening plate (17) to move is provided at the right wall of the embedded installation portion (3), and limiting rails (21) welded to the inner wall of the movable groove (20) are provided at both ends of the movable groove (20), and limiting blocks integrally formed therewith are provided at both ends of the right fastening plate (17), and the limiting blocks are slidably assembled inside the limiting rails (21).

5. A coal mining machine pick according to claim 1, characterized in that: The lower layer docking hole (6) is in the shape of a curved arc, the upper layer docking hole (7) is in the shape of a circular hole, and a connecting groove is provided between the upper layer docking hole (7) and the lower layer docking hole (6) to open up the spaces between the two.

6. A coal mining machine pick according to claim 5, characterized in that: A first exhaust groove (24) for exhausting the upper docking hole (7) and the lower docking hole (6) is provided inside the intermediate connection portion (4), and a second exhaust groove (25) communicating with the first exhaust groove (24) is provided inside the embedded installation portion (3), wherein the lower end of the second exhaust groove (25) extends to the interior of the upper docking hole (7).

7. A coal mining machine pick according to claim 1, characterized in that: A cutter head mounting seat (26) is installed inside the cutter head mounting portion (5), and at least one mounting seat positioning column (27) is provided inside the cutter head mounting seat (26). The mounting seat positioning column (27) passes through the cutter head mounting seat (26) and the cutter head mounting portion (5) and is fixed by tightening a nut. The root thread of the cutter head (2) is assembled inside the cutter head mounting seat (26).

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