Cooler for cutting unit of coal mining machine

Abstract

The utility model relates to the technical field of coal mining machine cooling, in particular to a coal mining machine cutting unit cooler which comprises a body and cutting teeth, a protective barrel is arranged outside the body, a cutting tooth rotating speed sensing assembly is arranged inside the protective barrel, and the cutting tooth rotating speed sensing assembly comprises a photoelectric coded disc, a fixed disc, a photosensitive piece and a fixed light source. The fixed disc is welded and fixed to the side wall of the cutting tooth, the photosensitive pieces are embedded and installed in the fixed disc, the photoelectric coded disc is installed on one side of the fixed disc, a connecting column is arranged between the photoelectric coded disc and the fixed disc, and the photoelectric coded disc, the fixed disc and the photosensitive pieces synchronously rotate along with the cutting tooth. The fixed light source is fixedly welded to the lower end of one set of supporting pieces, the bottom face of the fixed light source is welded to the outer side of the body, and the fixed light source faces the photoelectric coded disc and the photosensitive pieces.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining machine cooling, in particular to a cooler for a cutting part of a coal mining machine. Background Art

[0002] Coal mining machine is one of the important equipment for realizing mechanization and modernization of coal mine production. It is a large and complex system integrating mechanical, electrical and hydraulic functions. Mechanized coal mining can reduce physical labor, improve safety, and achieve the goals of high output, high efficiency and low consumption. Coal mining machine is mainly used in longwall coal mining working face. It uses working mechanism to break coal from the coal body (breaking coal) and load it into the working face conveyor (loading coal). Coal mining machine can travel (traction) at the set traction speed, so that the coal breaking and loading processes can be carried out continuously.

[0003] The cutting part of the coal mining machine is the most important component and also the working mechanism of the coal mining machine. During the operation of the coal mining machine, since the cutting part needs to rotate at high speed for a long time and is in contact with the coal blocks, a lot of heat will be accumulated, thereby increasing the temperature. Excessive temperature will damage the cutting part and the coal mining work cannot be carried out normally. For example, a Chinese patent with publication number CN210919044U discloses a cooling device for the cutting part of a coal mining machine, which includes a cutting part body, one end of the outer surface of the cutting part body is fixedly connected to a cutting head, the outer surface of the cutting head is fixedly connected to cutting teeth, the outer surface of the cutting part body is fixedly connected to a fixing column, one end of the outer surface of the fixing column is provided with a mounting groove, and the interior of the mounting groove is fixedly connected to an annular water channel.

[0004] The cutting part cooling device of the coal mining machine is realized by welding an annular water channel on the outer shell of the cutting part, and fixing twelve water outlet pipes on a side close to the cutting part, and fixing a nozzle at each water outlet pipe. Cold water is sprayed from the nozzle to the cutting part through the annular water channel, so that the cutting part can be fully cooled, and the main body of the cutting part can be cooled evenly, thereby solving the problem of uneven cooling, which will cause partial breakage and damage of the cutting part.

[0005] Although this cooling device for the cutting part of the coal mining machine solves the problem of uniform cooling, the water output of this cooling device cannot be controlled. Regardless of the rotation speed of the cutting teeth of the cutting part, the flow rate of the cooling water sprayed is unrelated to it. When the rotation speed of the cutting teeth is low, the flow rate is small, which easily causes a waste of water resources. When the rotation speed of the cutting teeth is high, it is easy to cause poor cooling effect. In addition, the opening and closing of the valve needs to be opened by operating the manual operating handle, which is very inconvenient. Utility Model Content

[0006] 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 cutting part cooler, and the above technical purpose is achieved through the following technical solutions:

[0007] A coal mining machine cutting part cooler, characterized in that: comprising a cutting part, the cutting part comprising a body and cutting teeth, a support member is welded on the outer wall of the body, a total of six groups of the support members are equidistantly distributed around the outer side of the body, a first support ring welded and fixed to the upper end of each group of support members is installed on the outer side of the support member, and a protective tube is welded on one side of the first support ring;

[0008] One end of the protective tube extends to cover the end close to the cutting tooth, and a cutting tooth speed sensing component is provided inside the protective tube, and the cutting tooth speed sensing component includes a photoelectric encoder, a fixed disc, a photosensitive component, and a fixed light source. The fixed disc is welded and fixed to the side wall of the cutting tooth, and a plurality of photosensitive components are provided and embedded and installed inside the fixed disc. The photoelectric encoder is installed on one side of the fixed disc, and a connecting column is provided between the photoelectric encoder and the fixed disc. The photoelectric encoder, the fixed disc, and the photosensitive component rotate synchronously with the cutting tooth. The surface of the photoelectric encoder is provided with grating openings equal to the number of photosensitive components. The fixed light source is welded and fixed to the lower end of one group of support members, and the bottom surface of the fixed light source is welded to the outside of the main body. The direction of the fixed light source is toward the photoelectric encoder and the photosensitive component.

[0009] A cooling assembly is installed on the outside of the protective tube. The cooling assembly consists of eight groups of independent cooling modules. The eight groups of independent cooling modules are equidistantly distributed on the outside of the protective tube.

[0010] Furthermore, a mounting column is welded to one side of the cutting tooth, and a second support ring is welded and fixed thereto at the other end of the mounting column. The second support ring is installed inside the protective tube, and the protective tube is provided with a rotation groove at the outer side of the second support ring. The outer side of the second support ring is assembled in the rotation groove, and when the cutting tooth rotates, the second support ring is driven to rotate inside the protective tube.

[0011] Furthermore, the independent cooling module includes a cooling nozzle, a first water inlet pipe, a solenoid valve and a second water inlet pipe. The first water inlet pipe is installed on the outside of the protective tube, the second water inlet pipe is also close to the outside of the protective tube, and one end of the second water inlet pipe extends to the outside of the main body. The first water inlet pipe and the second water inlet pipe are fixed by a pipe bracket arranged on the outside of both. The solenoid valve is installed between the first water inlet pipe and the second water inlet pipe. The cooling nozzle is fixed at the front end of the first water inlet pipe, and the spray direction of the cooling nozzle is toward the cutting teeth.

[0012] Furthermore, a closing plate fixed between the fixed disc and the second support ring is provided therebetween, and the closing plate blocks the space on the protective tube close to the cutting tooth side to prevent cooling water from entering the protective tube and affecting the cutting tooth speed sensing component.

[0013] Furthermore, the fixed light source is installed between the protective tube and the body, and the fixed light source does not rotate synchronously with the cutting teeth.

[0014] Furthermore, the independent cooling module is installed on the outside of the protective tube and the main body, and the independent cooling module does not rotate synchronously with the cutting teeth.

[0015] In summary, the utility model has the following beneficial effects:

[0016] The utility model is equipped with an additional speed sensing component for the cutting teeth, which rotates synchronously with the cutting teeth and uses a photoelectric encoder speed measurement method to intuitively grasp the speed of the cutting teeth, which is conducive to grasping the operation information of the cutting part;

[0017] The utility model cooperates with the cutting tooth speed sensing component and the cooling component to adjust the flow of the electromagnetic valve in the cooling component according to the speed of the cutting tooth, thereby saving water resources when the cutting tooth speed is slow and improving the cooling effect when the cutting tooth speed is fast, and the utility model is flexible and adjustable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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:

[0019] Figure 1 It is an oblique view of the utility model;

[0020] Figure 2 It is a side view of the utility model;

[0021] Figure 3 It is a structural diagram of the cutting tooth speed sensing assembly in the utility model;

[0022] Figure 4 It is a schematic diagram of one side of the cutting teeth in the utility model.

[0023] In the figure, 1. main body; 2. cutting teeth; 3. support member; 4. first support ring; 5. protective tube; 6. photoelectric code disk; 7. fixed disc; 8. photosensitive member; 9. fixed light source; 10. connecting column; 11. grating port; 12. mounting column; 13. second support ring; 14. cooling nozzle; 15. first water inlet pipe; 16. solenoid valve; 17. second water inlet pipe; 18. closing plate. DETAILED DESCRIPTION

[0024] 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 4 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.

[0025] Various exemplary embodiments of the present utility model will be described below with reference to the accompanying drawings.

[0026] Embodiment 1: A cooler for the cutting part of a coal mining machine comprises a cutting part, wherein the cutting part comprises a main body 1 and cutting teeth 2, a support member 3 is welded on the outer wall of the main body 1, and a total of six groups of support members 3 are equidistantly distributed around the outer side of the main body 1, and a first support ring 4 welded and fixed to the upper end of each group of support members 3 is installed on the outer side of the support member 3, and a protective tube 5 is welded on one side of the first support ring 4.

[0027] One end of the protective tube 5 extends to cover the end close to the cutting tooth 2. The interior of the protective tube 5 is provided with a cutting tooth 2 speed sensing component, which includes a photoelectric encoder 6, a fixed disc 7, a photosensitive component 8, and a fixed light source 9. The fixed disc 7 is welded and fixed to the side wall of the cutting tooth 2. The photosensitive component 8 is provided with a plurality of and embedded in the fixed disc 7. The photoelectric encoder 6 is installed on one side of the fixed disc 7, and a connecting column 10 is provided between the photoelectric encoder 6 and the fixed disc 7. The photoelectric encoder 6, the fixed disc 7, and the photosensitive component 8 rotates synchronously with the cutting teeth 2, the surface of the photoelectric code disk 6 is provided with grating openings 11 equal to the number of the photosensitive members 8, the fixed light source 9 is welded and fixed to the lower end of one group of support members 3, the bottom surface of the fixed light source 9 is welded to the outside of the main body 1, the direction of the fixed light source 9 is toward the photoelectric code disk 6 and the photosensitive member 8, the fixed light source 9 is installed at a position between the protective tube 5 and the main body 1, the fixed light source 9 does not rotate synchronously with the cutting teeth 2, the independent cooling module is installed on the outside of the protective tube 5 and the main body 1, and the independent cooling module does not rotate synchronously with the cutting teeth 2.

[0028] A mounting column 12 is welded on one side of the cutting tooth 2, and a second support ring 13 is welded and fixed to the mounting column 12 at the other end. The second support ring 13 is installed inside the protective tube 5. The protective tube 5 is provided with a rotation groove at the outer side of the second support ring 13. The outer side of the second support ring 13 is assembled in the rotation groove. When the cutting tooth 2 rotates, it drives the second support ring 13 to rotate inside the protective tube 5.

[0029] A closing plate 18 is fixed between the fixed disc 7 and the second support ring 13 , and the closing plate 18 blocks the space on the protective tube 5 close to the cutting tooth 2 to prevent cooling water from entering the protective tube 5 and affecting the speed sensing component of the cutting tooth 2 .

[0030] A cooling assembly is installed on the outside of the protective cylinder 5. The cooling assembly consists of eight groups of independent cooling modules. The eight groups of independent cooling modules are equidistantly distributed on the outside of the protective cylinder 5. The independent cooling module includes a cooling nozzle 14, a first water inlet pipe 15, a solenoid valve 16 and a second water inlet pipe 17. The first water inlet pipe 15 is installed on the outside of the protective cylinder 5. The second water inlet pipe 17 is also close to the outside of the protective cylinder 5, and one end of the second water inlet pipe 17 extends to the outside of the main body 1. The first water inlet pipe 15 and the second water inlet pipe 17 are fixed by a pipe bracket arranged on the outside of both. The solenoid valve 16 is installed between the first water inlet pipe 15 and the second water inlet pipe 17. The cooling nozzle 14 is fixed at the front end of the first water inlet pipe 15. The spray direction of the cooling nozzle 14 is toward the cutting tooth 2. It can be seen that the flow of each group of independent cooling modules is controlled by an independent solenoid valve 16. The solenoid valve 16 is linked with the speed sensing component of the cutting tooth 2 to adjust the flow of the solenoid valve 16 according to the speed of the cutting tooth 2.

[0031] When the cutting part is in working state, the cutting tooth 2 rotates continuously, and the photoelectric code disk 6 and the fixed disc 7 rotate with the cutting tooth 2, and their rotation speed is consistent with the rotation speed of the cutting tooth 2. The grating opening 11 on the photoelectric code disk 6 is used for light transmission, and each grating opening 11 has a group of corresponding photosensitive parts 8 on one side. When the fixed light source 9 is irradiated on the photoelectric code disk 6, the light source passing through the grating opening 11 is received by the photosensitive part 8 and a pulse signal is generated. The rotation speed of the cutting tooth 2 can be obtained by the background. According to the rotation speed of the cutting tooth 2, the flow of the solenoid valve 16 can be intuitively assisted to assist the operator. When the rotation speed of the cutting tooth 2 is low, the workload of the cutting tooth 2 is not high at this time, and the flow of the solenoid valve 16 can be appropriately reduced to save cooling water. When the rotation speed of the cutting tooth 2 is high, the workload of the cutting tooth 2 is large at this time, and the flow of the solenoid valve 16 can be appropriately increased to increase the cooling efficiency. The cooling water spray flow rate is adjusted according to the rotation speed of the cutting tooth 2, which is convenient for flexible adjustment.

[0032] 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 cutting part cooler, characterized in that: The cutting part comprises a cutting portion, the cutting portion comprises a body (1) and cutting teeth (2), a support member (3) is welded on the outer wall of the body (1), a total of six groups of the support members (3) are equidistantly distributed around the outer side of the body (1), a first support ring (4) is installed on the outer side of the support member (3) and is welded and fixed to the upper end of each group of support members (3), and a protective tube (5) is welded on one side of the first support ring (4); One end of the protective tube (5) extends to cover an end close to the cutting tooth (2). A cutting tooth (2) speed sensing component is provided inside the protective tube (5). The cutting tooth (2) speed sensing component comprises a photoelectric encoder (6), a fixed disc (7), a photosensitive element (8), and a fixed light source (9). The fixed disc (7) is welded and fixed to the side wall of the cutting tooth (2). A plurality of photosensitive elements (8) are provided and embedded in the fixed disc (7). The photoelectric encoder (6) is installed on one side of the fixed disc (7). side, and a connecting column (10) is provided between the photoelectric code disk (6) and the fixed disk (7), the photoelectric code disk (6), the fixed disk (7), and the photosensitive element (8) rotate synchronously with the cutting teeth (2), the surface of the photoelectric code disk (6) is provided with grating openings (11) equal in number to the photosensitive elements (8), the fixed light source (9) is welded and fixed to the lower end of one group of support members (3), the bottom surface of the fixed light source (9) is welded to the outside of the body (1), and the direction of the fixed light source (9) faces the photoelectric code disk (6) and the photosensitive element (8); A cooling assembly is installed on the outside of the protective cylinder (5), wherein the cooling assembly is composed of eight groups of independent cooling modules, and the eight groups of independent cooling modules are equidistantly distributed on the outside of the protective cylinder (5).

2. A coal mining machine cutting part cooler according to claim 1, characterized in that: A mounting column (12) is welded to one side of the cutting tooth (2), and a second support ring (13) is welded and fixed to the mounting column (12) at the other end. The second support ring (13) is mounted inside the protective tube (5), and the protective tube (5) is provided with a rotation groove at the outer side of the second support ring (13). The outer side of the second support ring (13) is assembled in the rotation groove. When the cutting tooth (2) rotates, the second support ring (13) is driven to rotate inside the protective tube (5).

3. A coal mining machine cutting part cooler according to claim 1, characterized in that: The independent cooling module comprises a cooling nozzle (14), a first water inlet pipe (15), a solenoid valve (16) and a second water inlet pipe (17); the first water inlet pipe (15) is installed on the outside of the protective tube (5); the second water inlet pipe (17) is also closely attached to the outside of the protective tube (5); one end of the second water inlet pipe (17) extends to the outside of the body (1); the first water inlet pipe (15) and the second water inlet pipe (17) are fixed by a pipe bracket arranged outside the first water inlet pipe (15) and the second water inlet pipe (17); the cooling nozzle (14) is fixed to the front end of the first water inlet pipe (15); and the spraying direction of the cooling nozzle (14) is toward the cutting teeth (2).

4. A coal mining machine cutting part cooler according to claim 1, characterized in that: A closing plate (18) is provided between the fixed disc (7) and the second support ring (13), and the closing plate (18) blocks the space on the protective tube (5) close to the cutting tooth (2) to prevent cooling water from entering the protective tube (5) and affecting the speed sensing component of the cutting tooth (2).

5. A coal mining machine cutting part cooler according to claim 1, characterized in that: The fixed light source (9) is installed between the protective tube (5) and the body (1), and the fixed light source (9) does not rotate synchronously with the cutting teeth (2).

6. A coal mining machine cutting part cooler according to claim 3, characterized in that: The independent cooling module is installed on the outside of the protective tube (5) and the main body (1), and the independent cooling module does not rotate synchronously with the cutting teeth (2).

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