CN114251091A - Cooling device for cutting part of coal mining machine - Google Patents
Cooling device for cutting part of coal mining machine Download PDFInfo
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- CN114251091A CN114251091A CN202210126584.1A CN202210126584A CN114251091A CN 114251091 A CN114251091 A CN 114251091A CN 202210126584 A CN202210126584 A CN 202210126584A CN 114251091 A CN114251091 A CN 114251091A
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- 238000001816 cooling Methods 0.000 title claims abstract description 22
- 239000003245 coal Substances 0.000 title claims abstract description 20
- 238000005065 mining Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 146
- 238000005507 spraying Methods 0.000 claims abstract description 51
- 230000005540 biological transmission Effects 0.000 claims description 68
- 230000007246 mechanism Effects 0.000 claims description 18
- 230000008859 change Effects 0.000 claims description 14
- 239000007921 spray Substances 0.000 abstract description 17
- 239000002699 waste material Substances 0.000 abstract description 5
- 230000009471 action Effects 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/06—Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
- E21C25/10—Rods; Drums
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D31/00—Other cooling or freezing apparatus
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- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
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- General Engineering & Computer Science (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The application discloses a cooling device for a cutting part of a coal mining machine, which comprises the cutting part, a water spraying assembly for spraying water to the cutting part and an adjusting assembly for adjusting the water quantity of the water spraying assembly; the water spraying assembly comprises a water spraying pipeline, the adjusting assembly comprises a valve assembly, the valve assembly is arranged in the water spraying pipeline, and the valve assembly is linked with the cutting part and can adjust the opening degree of the valve assembly according to the rotating speed of the cutting part. The water yield that this application can be according to the rotational speed adjustment water spray of cutting part thereby cools down cutting part, can reduce the water waste.
Description
Technical Field
The application relates to the technical field of coal mining machines, in particular to a cooling device for a cutting part of a coal mining machine.
Background
Make the most machinery in coal mining work exactly the coal-winning machine, the cutting part of coal-winning machine makes the most important part, also is the core operating device of coal-winning machine, the cutting part can normally work is the important part of guaranteeing that whole coal-winning machine can normally work, in the course of the work of coal-winning machine, because the high-speed rotation of cutting portion long time, and contact with the coal cinder, cutting portion can accumulate a lot of heats, thereby make its temperature rise, the too high temperature can make cutting portion very easily damage, be unfavorable for normal work, so need cool down the processing.
Most of current coal mining machine cutting units adopt the mode at cutting unit shell welding water course to cool off, but no matter how the real-time behavior of coal mining machine cutting unit is, its water yield is certain, need use a large amount of water resources to cool down cutting unit all the time to cause the waste of water resource, be not conform to green's theory.
Therefore, a cooling device for the cutting part of the coal mining machine, which can adjust the water amount according to the real-time working condition of the cutting part of the coal mining machine, needs to be designed.
Disclosure of Invention
The utility model provides a coal-winning machine cutting units cooling device is thereby provided to the not enough of prior art is overcome to aim at of this application, thereby can cool down cutting units according to the water yield of the rotational speed adjustment water spray of cutting units, can reduce the water waste.
The technical scheme of the application provides a cooling device for a cutting part of a coal mining machine, which comprises the cutting part, a water spraying assembly for spraying water to the cutting part and an adjusting assembly for adjusting the water quantity of the water spraying assembly;
the water spraying assembly comprises a water spraying pipeline, the adjusting assembly comprises a valve assembly, the valve assembly is arranged in the water spraying pipeline, and the valve assembly is linked with the cutting part and can adjust the opening degree of the valve assembly according to the rotating speed of the cutting part.
Preferably, the water spraying pipeline comprises a water inlet pipe, a communicating pipe and a water outlet pipe, the communicating pipe is communicated with the water inlet pipe and the water outlet pipe, the water outlet pipe is provided with a plurality of water outlet pipes, and the plurality of water outlet pipes are arranged along the circumferential direction of the cutting part at intervals.
Preferably, the adjusting assembly further comprises a linkage assembly, the linkage assembly is connected with the valve assembly, and the linkage assembly is linked with the cutting part;
when the rotating speed of the cutting part is increased, the linkage assembly drives the valve assembly to move towards the opening direction, so that the opening degree of the valve assembly is increased, and the flow of the water spraying pipeline is increased;
when the rotating speed of the cutting part is reduced, the linkage assembly drives the valve assembly to move towards the closing direction, so that the opening degree of the valve assembly is reduced, and the flow of the water spraying pipeline is reduced.
Preferably, the cutting device further comprises a driving shaft, wherein the driving shaft is connected with the cutting part and drives the cutting part to rotate;
the linkage assembly comprises a transmission shaft and a radial moving part, the transmission shaft is in transmission connection with the driving shaft, the radial moving part is movably connected with the transmission shaft and can move along the radial direction of the transmission shaft, and the radial moving part is in linkage with the valve assembly and is used for controlling the opening degree of the valve assembly.
Preferably, the radial moving part includes movable part and the variable ring portion of diameter, the movable part with transmission shaft swing joint can follow the radial activity of transmission shaft, the movable part with the ring portion is connected, the ring portion with the valve assembly linkage, the movable part can be along with the rotational speed of transmission shaft changes and drives the diameter change of ring portion.
Preferably, the movable part comprises at least 3 groups of sliding mechanisms, and the sliding mechanisms are respectively arranged around the transmission shaft at equal intervals;
the sliding mechanism comprises a sliding rail and a sliding block, the sliding rail is fixedly connected with the transmission shaft and arranged along the radial direction of the transmission shaft, the sliding block is arranged on the sliding rail in a sliding mode and can slide along the radial direction of the transmission shaft, and the sliding block is connected with the circular ring part and can drive the circular ring part to change the diameter.
Preferably, the sliding mechanism further includes a first elastic member disposed between the slider and the drive shaft or between the circular ring portion and the drive shaft;
when the driving shaft rotates, the driving shaft drives the sliding block to rotate around the driving shaft;
when the acting force of the sliding block in the radial direction is larger than the elastic force of the first elastic piece, the sliding block slides in the radial direction and drives the diameter of the circular ring part to be enlarged, and the circular ring part drives the opening of the valve component to be enlarged;
when the acting force of the sliding block in the radial direction is smaller than the elastic force of the first elastic piece, the sliding block slides in the radial direction and drives the diameter of the circular ring part to be reduced, and the circular ring part drives the opening of the valve component to be reduced.
Preferably, the circular ring part is of an elastic structure, and when the driving shaft rotates, the driving shaft drives the sliding block to rotate around the driving shaft;
when the acting force of the sliding block in the radial direction outwards is larger than the elastic force of the circular ring part, the sliding block drives the circular ring part to expand in diameter, and the circular ring part drives the opening of the valve component to increase;
when the radial outward acting force of the sliding block is smaller than the elastic force of the circular ring part, the diameter of the circular ring part is reduced, and the circular ring part drives the opening of the valve component to be reduced.
Preferably, the circular ring part is composed of a plurality of groups of arc-shaped blocks, the arc-shaped blocks are movably arranged along the radial direction of the driving shaft, the movable part is fixedly connected with the arc-shaped blocks, the valve assembly is linked with the arc-shaped blocks, the driving shaft drives the movable part to rotate when rotating, and the movable part drives the arc-shaped blocks to rotate;
when the movable part moves outwards along the radial direction, the movable part drives the arc-shaped block to move outwards along the radial direction, so that the diameter of the circular ring part is enlarged, and the arc-shaped block drives the valve component to move towards the opening direction;
when the movable part moves inwards along the radial direction, the movable part drives the arc-shaped block to move inwards along the radial direction, so that the diameter of the circular ring part is reduced, and the arc-shaped block drives the valve component to move towards the closing direction.
Preferably, the linkage assembly further comprises a linkage rod, the linkage rod is connected with the valve assembly, and the linkage rod is linked with the circular ring part;
when the diameter of the circular ring part is enlarged, the circular ring part drives the linkage rod to act, and the linkage rod drives the valve component to act towards the opening direction, so that the opening degree of the valve component is increased;
when the diameter of the circular ring part is reduced, the circular ring part drives the linkage rod to act, and the linkage rod drives the valve component to act towards the closing direction, so that the opening degree of the valve component is reduced.
After adopting above-mentioned technical scheme, have following beneficial effect:
the valve component can be linked with the cutting part and can adjust the opening of the valve component, so that the flow of the water spraying pipeline is controlled, when the rotating speed of the cutting part is increased, the opening of the valve component is increased, the flow of the water spraying pipeline is increased, and the water spraying amount of the water spraying component to the cutting part is increased; when the rotating speed of the cutting part is reduced, the opening degree of the valve component is reduced, so that the flow of the water spraying pipeline is reduced, and the water spraying amount of the water spraying component to the cutting part is reduced; this application can adjust the size of water spray volume through the operating condition according to the cutting part to can the water economy resource, avoid extravagant.
Drawings
The disclosure of the present application will become more readily understood by reference to the drawings. It should be understood that: these drawings are for illustrative purposes only and are not intended to limit the scope of the present application. In the figure:
FIG. 1 is a schematic view of the overall structure of the present invention in one embodiment thereof;
FIG. 2 is a schematic view of another aspect of the present invention in one embodiment thereof;
FIG. 3 is a schematic diagram of the internal structure of the present invention in one embodiment thereof;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
FIG. 5 is a schematic structural view of a linkage assembly in one embodiment of the present invention;
FIG. 6 is a schematic view of the structure of the annular ring portion in one embodiment of the present invention;
FIG. 7 is a schematic view of the radially movable member of the present invention in an alternative embodiment.
Reference symbol comparison table:
cutting part 1: a driving shaft 11, a connecting column 12 and a driving gear 13;
the water spraying pipeline 2: a water inlet pipe 21, a communicating pipe 22, a water outlet pipe 23 and a movable pipe 24;
valve assembly 3: a stop ball;
the linkage assembly 4: the device comprises a transmission shaft 41, a transmission gear 411, a mounting base 412, a fixed block 413, a radial movable piece 42, a circular ring portion 421, an arc-shaped block 4211, a sliding mechanism 422, a sliding block 4221, a sliding rail 4222, a first elastic piece 4223, a guide wheel 4224, a linkage rod 43, a stop block 431, a second elastic piece 432 and a roller 433.
Detailed Description
Embodiments of the present application are further described below with reference to the accompanying drawings.
It is easily understood that according to the technical solutions of the present application, those skilled in the art can substitute various structures and implementations without changing the spirit of the present application. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical solutions of the present application, and should not be construed as limiting or restricting the technical solutions of the present application in their entirety.
The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Throughout the description of the present application, it is to be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "coupled" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The foregoing is to be understood as belonging to the specific meanings in the present application as appropriate to the person of ordinary skill in the art.
The invention discloses a cutting part cooling device of a coal mining machine in one embodiment, which comprises a cutting part 1, a water spraying assembly for spraying water to the cutting part 1 and an adjusting assembly for adjusting the water quantity of the water spraying assembly, wherein the water spraying assembly is used for spraying water to the cutting part 1;
the water spraying component comprises a water spraying pipeline 2, the adjusting component comprises a valve component 3, the valve component 3 is arranged in the water spraying pipeline 2, and the valve component 3 is linked with the cutting part 1 and can adjust the opening degree of the valve component 3 according to the rotating speed of the cutting part 1.
Specifically, the water spray pipe 2 is used for carrying the cooling water, and the cooling water can be carried in the water spray pipe 2 and to the blowout of cutting unit 1, and then cools off cutting unit 1, and valve assembly 3 sets up in the water spray pipe 2, can control the discharge in the water spray pipe 2 through the aperture size of adjusting valve assembly 3, and then changes to the size of the discharge of cutting unit 1 spun.
Wherein, valve assembly 3 can link with cutting unit 1 and can adjust valve assembly 3's aperture size according to cutting unit 1's rotational speed change, when cutting unit 1's rotational speed increase promptly, the produced heat of cutting unit 1 operation increase this moment, valve assembly 3's aperture increase for the water flow in the water spray pipe 2 increases, and then makes the water flow that spouts to cutting unit 1 increase, makes cutting unit 1 can be cooled off effectively. When the rotational speed of cutting unit 1 reduces, the produced heat of cutting unit 1 operation this moment reduces, need not to adopt too big rivers to cool off promptly, and the aperture of valve member 3 reduces this moment for the discharge in the spray pipe 2 can reduce, makes the rivers that spout to cutting unit 1 reduce promptly, thereby can realize guaranteeing the water economy resource under the effective refrigerated prerequisite of cutting unit 1, avoids the waste of water resource.
Still further, as shown in fig. 1-3, still include drive shaft 11 and spliced pole 12, wherein, drive shaft 11 sets up in spliced pole 12, drive shaft 11 is connected with cutting unit 1 and is used for driving cutting unit 1 rotatory, spliced pole 12 is unrotatable, water spray assembly and spliced pole 12 fixed connection, valve member 3 is connected between drive shaft 11 and water spray pipe 2, can link valve member 3 when drive shaft 11 rotates and make the aperture of valve member 3 change to change the water flow in the water spray runner, and then change the water yield size of spouting to cutting unit 1.
In some embodiments of the present invention, as shown in fig. 2, the water spraying pipeline 2 includes a water inlet pipe 21, a communication pipe 22 and a water outlet pipe 23, the communication pipe 22 communicates the water inlet pipe 21 and the water outlet pipe 23, the water outlet pipe 23 is provided in plurality, and the water outlet pipes 23 are arranged at intervals along the circumferential direction of the cutting part 1.
Preferably, as shown in fig. 2, communicating pipe 22 is a ring pipe, communicating pipe 22 is arranged along the circumference of cutting unit 1, inlet pipe 21 is provided with one, inlet pipe 21 is used for communicating with an external water source, and inlet pipe 21 communicates communicating pipe 22 and introduces rivers into communicating pipe 22, outlet pipe 23 is provided with a plurality of, a plurality of outlet pipes 23 are respectively communicated with communicating pipe 22 at intervals, can carry out water spray cooling to each part of cutting unit 1 through a plurality of outlet pipes 23, thereby make cooling effect better.
Preferably, as shown in fig. 2, one water inlet pipe 21 is provided, the valve assembly 3 is arranged in the water inlet pipe 21, the input water amount of the water inlet pipe 21 can be changed by changing the opening degree of the valve assembly 3, and then the water output amount of the water outlet pipe 23 is changed, so that the water amount can be adjusted according to the working condition of the cutting part 1, and water resources are saved.
In some embodiments of the invention, as shown in fig. 2 and 3, the adjustment assembly further comprises a linkage assembly 4, the linkage assembly 4 being connected with the valve assembly 3, the linkage assembly 4 being linked with the cutting part 1;
when the rotating speed of the cutting part 1 is increased, the linkage assembly 4 drives the valve assembly 3 to move towards the opening direction, so that the opening degree of the valve assembly 3 is increased, and the flow of the water spraying pipeline 2 is increased;
when the rotating speed of the cutting part 1 is reduced, the linkage assembly 4 drives the valve assembly 3 to move towards the closing direction, so that the opening degree of the valve assembly 3 is reduced, and the flow of the water spraying pipeline 2 is reduced.
Further, as shown in fig. 3, the linkage assembly 4 is movably disposed on the connecting column 12, the communicating pipe 22 is disposed at the periphery of the connecting column 12, one end of the linkage assembly 4 is linked with the driving shaft 11, and the other end is connected with the valve assembly 3, the linkage assembly 4 can link the valve assembly 3 to act according to the rotating speed of the cutting part 1, so that when the rotating speed of the cutting part 1 is high, the opening degree of the valve assembly 3 is increased, the water spraying amount is increased, and when the rotating speed of the cutting part 1 is low, the opening degree of the valve assembly 3 is decreased, and the water spraying amount is decreased.
Specifically, as shown in fig. 4, the valve assembly 3 is a stopper ball 31, a movable pipe 24 for moving the stopper ball 31 is provided in the water inlet pipe 21, the movable pipe 24 is provided along the radial direction of the water inlet pipe 21 and communicates with the water inlet pipe 21, and the stopper ball 31 can move along the movable pipe 24 to adjust the opening degree of the valve assembly 3, thereby adjusting the input water amount of the water inlet pipe 21.
Still further, as shown in fig. 4, the linkage assembly 4 is connected to the stopping ball 31, and when the rotation speed of the cutting part 1 is increased, the linkage assembly 4 drives the stopping ball 31 to move upwards along the movable pipe 24, that is, the area of the stopping ball 31 stopping the water inlet pipe 21 is reduced, so that the opening of the valve assembly 3 is increased, the water inflow of the water inlet pipe 21 is increased, and the water injection amount is increased. When the rotating speed of the cutting part 1 is reduced, the linkage assembly 4 drives the stop ball 31 to move downwards along the movable pipe 24, so that the area of the stop ball 31 stopping the water inlet pipe 21 is increased, namely the opening degree of the valve assembly 3 is reduced, the water inflow of the water inlet pipe 21 is reduced, and the water spraying amount is reduced.
More preferably, when the cutting portion 1 stops rotating, that is, the cutting portion 1 does not need to spray water for cooling at this time, the linkage assembly 4 drives the stop ball 31 to move downwards along the movable pipe 24, so that the stop ball 31 completely plugs the water inlet pipe 21, that is, the valve assembly 3 is closed, and further water cannot be sprayed, and water waste caused by continuous water spraying of the cutting portion 1 when the cutting portion is not used is avoided.
Alternatively, the valve assembly 3 may also be a ball valve or a butterfly valve.
In some embodiments of the present invention, as shown in fig. 2 and 3, a driving shaft 11 is further included, the driving shaft 11 is connected with the cutting part 1 and drives the cutting part 1 to rotate;
as shown in fig. 3, the linkage assembly 4 includes a transmission shaft 41 and a radial movable member 42, the transmission shaft 41 is in transmission connection with the driving shaft 11, the radial movable member 42 is movably connected with the transmission shaft 41 and can move along the radial direction of the transmission shaft 41, and the radial movable member 42 is linked with the valve assembly 3 and is used for controlling the opening degree of the valve assembly 3.
Specifically, as shown in fig. 2 and 3, the connecting column 12 is a cylindrical structure, a cavity is provided in the connecting column 12, the transmission shaft 41 and the driving shaft 11 are both disposed in the cavity of the connecting column 12, the transmission shaft 41 is parallel to the driving shaft 11, and the transmission shaft 41 is connected to the inner wall of the connecting column 12 through the mounting seat 412.
As shown in fig. 3, a driving gear 13 is disposed on the driving shaft 11, a transmission gear 411 is disposed on the transmission shaft 41, the driving gear 13 is engaged with the transmission gear 411, when the driving shaft 11 drives the cutting unit 1 to rotate, the transmission shaft 41 is driven to rotate, the transmission shaft 41 drives the radial movable member 42 to move, so that the radial movable member 42 moves along the radial direction of the transmission shaft 41, and the radial movable member 42 drives the valve assembly 3 to move, thereby controlling the opening degree of the valve assembly 3 according to different rotation speeds of the cutting unit 1.
Further, the driving gear 13 and the transmission gear 411 have the same diameter, so that the driving shaft 11 and the transmission shaft 41 can transmit at the same rotational speed.
Alternatively, the diameters of the driving gear 13 and the transmission gear 411 are different, i.e., the rotation speed of the transmission shaft 41 is increased or the rotation speed of the transmission shaft 41 is decreased.
Alternatively, the drive shaft 11 and the transmission shaft 41 can also be in transmission connection by a belt transmission.
In some embodiments of the present invention, as shown in fig. 5, the radial movable member 42 includes a movable portion and a variable diameter circular portion 421, the movable portion is movably connected to the driving shaft 11 and can move along the radial direction of the driving shaft 41, the movable portion is connected to the circular portion 421, the circular portion 421 is linked with the valve assembly 3, and the movable portion can drive the diameter of the circular portion 421 to change with the change of the rotation speed of the driving shaft 41.
Further, when the driving shaft 11 rotates, the movable portion moves outward in the radial direction under the inertia effect, and at the same time, the movable portion drives the diameter of the circular ring portion 421 to expand, and the circular ring portion 421 drives the valve assembly 3 to move, so as to control the opening degree of the valve assembly 3. When the rotation speed is large, the moving part moves outward in the radial direction for a long distance, so that the diameter of the circular ring part 421 can be increased, and the opening of the valve component 3 is further increased. When the rotation speed is small, the distance that the movable portion moves radially outward is short, and therefore the diameter of the circular portion 421 is relatively small, so that the opening degree of the valve assembly 3 is small.
In some embodiments of the present invention, as shown in fig. 5, the movable portion includes at least 3 sets of sliding mechanisms 422, the sets of sliding mechanisms 422 are respectively disposed at equal intervals around the transmission shaft 41;
the sliding mechanism 422 comprises a sliding rail 4222 and a sliding block 4221, the sliding rail 4222 is fixedly connected with the transmission shaft 41 and is arranged along the radial direction of the transmission shaft 41, the sliding block 4221 is arranged on the sliding rail 4222 in a sliding mode and can slide along the radial direction of the transmission shaft 41, and the sliding block 4221 is connected with the circular ring portion 421 and can drive the circular ring portion 421 to change the diameter.
Specifically, three sets of sliding rails 4222 are respectively arranged along the radial direction of the transmission shaft 41, wherein a fixed block 413 is arranged on the transmission shaft 41, the sliding rails 4222 are fixedly connected with the fixed block 413, and the sliding blocks 4221 are slidably arranged in the sliding rails 4222 and can slide along the sliding rails 4222, i.e., the sliding blocks 4221 can move along the radial direction. When the cutting part 1 works, the driving shaft 11 drives the driving shaft 41 to rotate, the driving shaft 41 drives the sliding rail 4222 and the sliding block 4221 to rotate around the driving shaft 41 when rotating, the sliding block 4221 slides outwards along the sliding rail 4222 under the inertia effect, the sliding block 4221 slides outwards along the radial direction at different sliding distances according to different rotating speeds of the driving shaft 11, the sliding block 4221 pushes the circular ring 421 to change the diameter, the valve component 3 is touched through the circular ring 421, the opening degree of the valve component 3 is changed, the opening degree of the valve component 3 can be further changed according to different rotating speed working conditions of the cutting part 1, and therefore the water spraying amount is changed.
Wherein, three sets of slide rails 4222 set up at interval 120 respectively, and then make the effort that three slider 4221 applyed to ring portion 421 can be even, avoid ring portion 421 to warp.
Preferably, as shown in fig. 5, 4 sets of sliding mechanisms 422 can be provided, and two adjacent sets of sliding mechanisms 422 are respectively provided at intervals of 90 °.
Alternatively, the slide mechanism 422 can be provided in other numbers larger than 3 sets.
In some embodiments of the present invention, as shown in fig. 5, the sliding mechanism 422 further includes a first elastic member 4223, the first elastic member 4223 is disposed between the slider 4221 and the driving shaft 11 or between the annular ring portion 421 and the driving shaft 11;
when the driving shaft 11 rotates, the driving shaft 11 drives the sliding block 4221 to rotate around the driving shaft 11;
when the acting force of the sliding block 4221 in the radial direction is greater than the elastic force of the first elastic member 4223, the sliding block 4221 slides in the radial direction and drives the circular ring portion 421 to expand in diameter, and the circular ring portion 421 drives the valve assembly 3 to increase in opening;
when the radially outward acting force of the sliding block 4221 is smaller than the elastic force of the first elastic member 4223, the sliding block 4221 slides radially inward and drives the circular ring portion 421 to reduce the diameter, and the circular ring portion 421 drives the valve assembly 3 to reduce the opening.
Specifically, the first elastic member 4223 is a tension spring, one end of the tension spring is fixedly connected with the fixed clamping block, the other end of the tension spring is connected with the slider 4221, when the cutting unit 1 does not work, the slider 4221 is subjected to a radially outward acting force which is smaller than the elastic force of the tension spring, at this time, the slider 4221 is kept at an initial position and does not trigger the valve assembly 3 to act, and the valve assembly 3 is kept closed. When the cutting part 1 rotates, the slide block 4221 is subjected to a radially outward acting force which is larger than the elastic force of the tension spring, the slide block 4221 slides radially outward and pushes the circular ring 421 to expand outward, so that the diameter of the circular ring 421 is increased and the valve component 3 is triggered.
Further, the ring portion 421 is made of an elastic material, that is, the ring portion 421 can be elastically deformed to change the diameter. The plurality of sliders 4221 are fixedly connected with the inner wall of the circular ring 421, the transmission shaft 41 rotates to drive the sliders 4221 to rotate around the transmission shaft 41, and the sliders 4221 drive the circular ring 421 to rotate.
Alternatively, as shown in fig. 7, a guide wheel 4224 is provided on the slider 4221, and the guide wheel 4224 abuts against the inner wall of the circular ring 421 and is connected with the circular ring 421. The ring 421 is fixed and can not rotate, and when the slider 4221 rotates, the guide wheel 4224 moves along the inner wall of the ring 421 and pushes the ring 421 to expand outwards.
Optionally, the movable portion may also be a telescopic rod, one end of the telescopic rod is fixedly connected with the fixed portion, the other end of the telescopic rod is connected with the counterweight block, and the counterweight block is connected with the annular portion 421.
In some alternative embodiments of the present invention, the ring portion 421 is an elastic structure, and when the driving shaft 11 rotates, the driving shaft 11 drives the sliding block 4221 to rotate around the driving shaft 11;
when the radially outward acting force of the sliding block 4221 is greater than the elastic force of the circular ring portion 421, the sliding block 4221 drives the circular ring portion 421 to expand in diameter, and the circular ring portion 421 drives the valve component 3 to increase in opening;
when the radially outward acting force of the sliding block 4221 is smaller than the elastic force of the ring portion 421, the diameter of the ring portion 421 is reduced, and the ring portion 421 drives the opening of the valve component 3 to be reduced.
The ring portion 421 has elasticity, when the radially outward acting force of the slider 4221 is smaller than the elastic force of the ring portion 421, the diameter of the ring portion 421 is reduced, and when the radially outward acting force of the slider 4221 is larger than the elastic force of the ring portion 421, the slider 4221 pushes the ring portion 421 to expand.
In some embodiments of the present invention, as shown in fig. 6, the circular ring 421 is composed of a plurality of sets of arc-shaped blocks 4211, the arc-shaped blocks 4211 are movably arranged along the radial direction of the driving shaft 11, the movable portion is fixedly connected with the arc-shaped blocks 4211, the valve assembly 3 is linked with the arc-shaped blocks 4211, when the driving shaft 11 rotates, the movable portion is driven to rotate, and the movable portion drives the arc-shaped blocks 4211 to rotate;
when the movable portion moves outwards along the radial direction, the movable portion drives the arc-shaped blocks 4211 to move outwards along the radial direction, so that the diameter of the circular ring portion 421 is enlarged, and the arc-shaped blocks 4211 drive the valve component 3 to move towards the opening direction;
when the movable portion moves radially inward, the movable portion drives the arc-shaped blocks 4211 to move radially inward, so that the diameter of the circular ring portion 421 is reduced, and the arc-shaped blocks 4211 drive the valve component 3 to move in the closing direction.
Specifically, the number of the arc-shaped blocks 4211 corresponds to the number of the sliding blocks 4221, each sliding block 4221 is correspondingly and fixedly connected with one of the arc-shaped blocks 4211, and when the transmission shaft 41 does not rotate, the sliding blocks 4221 drive the arc-shaped blocks 4211 to be spliced together to form a complete circular ring. When the transmission shaft 41 rotates, the sliding blocks 4221 drive the arc-shaped blocks 4211 to move outwards in the radial direction, so that the diameter of the circular ring part 421 is increased.
Optionally, the arc blocks 4211 have hollow channels, and elastic ropes pass through the hollow channels of the arc blocks 4211 and connect the arc blocks 4211 in series, when the arc blocks 4211 expand outwards, gaps are formed between adjacent arc blocks 4211, and the elastic ropes are arranged in the gaps, so that the circular ring 421 is prevented from being jammed when being linked with the valve assembly 3.
In some embodiments of the present invention, as shown in fig. 4 and 5, the linkage assembly 4 further comprises a linkage rod 43, the linkage rod 43 is connected with the valve assembly 3, and the linkage rod 43 is linked with the annular ring portion 421;
when the diameter of the circular ring part 421 is enlarged, the circular ring part 421 drives the linkage rod 43 to move, and the linkage rod 43 drives the valve component 3 to move towards the opening direction, so that the opening degree of the valve component 3 is increased;
when the diameter of the circular ring 421 is reduced, the circular ring 421 drives the linkage rod 43 to move, and the linkage rod 43 drives the valve component 3 to move towards the closing direction, so that the opening degree of the valve component 3 is reduced.
Specifically, as shown in fig. 4, one end of the linkage rod 43 is connected to the stop ball 31, and the other end is linked to the circular ring 421, so that when the diameter of the circular ring 421 is enlarged or reduced, the linkage rod 43 can move up and down and drive the stop ball 31 to act, thereby controlling the amount of water sprayed.
Still further, as shown in fig. 3 and 4, the linkage rod 43 passes through the connecting column 12, the blocking block 431 is arranged on the linkage rod 43, the second elastic member 432 is arranged between the blocking block 431 and the connecting column 12, wherein the second elastic member 432 is a tension spring, the tension spring is connected with the blocking block 431 and the outer wall of the connecting column 12, and when the cutting part 1 does not act, the linkage rod 43 drives the blocking ball 31 to keep a closed state under the elastic force of the tension spring. When the cutting part 1 moves, the acting force applied to the linkage rod 43 by the circular ring part 421 is larger than the elastic force of the tension spring, so that the linkage rod 43 moves upwards and drives the stop ball 31 to move, and the water quantity is increased.
In addition, as shown in fig. 5, a roller 433 is disposed at an end of the linkage rod 43, the roller 433 abuts against an outer wall surface of the circular ring 421, when the rotation speed of the transmission shaft 41 increases, the diameter of the circular ring 421 increases, and the circular ring 421 pushes the linkage rod 43 to act, so as to trigger the stop ball 31 to move. In addition, the roller 433 is arranged at the end of the linkage rod 43, so that the locking of the circular ring 421 and the linkage rod 43 can be avoided. In addition, because the gap formed between the adjacent arc blocks 4211 in the action is small, the diameter of the roller 433 can pass through the gap, so that the clamping cannot be caused.
In a preferred embodiment of the present invention, as shown in fig. 1 to 5, the cutting part cooling device of the coal mining machine comprises a cutting part 1, a driving shaft 11, a connecting column 12, a water spraying assembly and an adjusting assembly, wherein the connecting column 12 is a hollow structure, a cavity is formed inside the connecting column 12, the driving shaft 11 is arranged inside the connecting column 12 and is connected with the cutting part 1, and the driving shaft 11 drives the cutting part 1 to rotate. The water spray assembly is used for cooling water to the cutting part 1, wherein the water spray assembly comprises a water inlet pipe 21, a communicating pipe 22 and a water outlet pipe 23, the communicating pipe 22 is communicated with the water inlet pipe 21 and the water outlet pipe 23, the communicating pipe 22 is in a circular ring shape, the communicating pipe 22 is arranged along the circumferential direction of the cutting part 1, and the water outlet pipes 23 are respectively communicated with the communicating pipe 22 at intervals and cool down by spraying water to different positions of the cutting part 1. The adjusting component is used for adjusting the cooling water outlet amount and comprises a valve component 3 and a linkage component 4, wherein the valve component 3 is a stop ball 31, and the stop ball 31 is movably arranged in the water inlet pipe 21.
Specifically, movable pipe 24 is disposed on inlet pipe 21, and movable pipe 24 is disposed along a radial direction of inlet pipe 21 and is communicated with inlet pipe 21. The linkage assembly 4 comprises a transmission shaft 41, a radial moving part 42 and a linkage rod 43, the transmission shaft 41 is connected with the connecting column 12 through a mounting seat 412, a driving gear 13 is arranged on the driving shaft 11, a transmission gear 411 is arranged on the transmission shaft 41, and the driving gear 13 is meshed with the transmission gear 411. Radial moving piece 42 includes ring portion 421 and slide mechanism 422, ring portion 421 comprises a plurality of equant arc pieces 4211, slide mechanism 422 includes slide rail 4222 and slider 4221, be equipped with fixed block 413 on transmission shaft 41, at least three slide rail 4222 respectively equidistance ground and fixed block 413 fixed connection, slide rail 4222 sets up along the radial of transmission shaft 41, slider 4221 slides and sets up in slide rail 4222 and can follow the radial slip of transmission shaft 41, be connected with the extension spring between slider 4221 and the fixed block 413, every slider 4221 respectively corresponds ground and an arc piece 4211 fixed connection.
One end of the linkage rod 43 is fixedly connected with the stop ball 31, and the other end is provided with a roller 433, wherein a stop block 431 is arranged on the linkage rod 43, a second elastic part 432 is arranged between the stop block 431 and the connecting column 12, the second elastic part 432 is a tension spring, and the roller 433 abuts against the outside of the annular part 421.
The working process of the device is as follows:
when the cutting part 1 does not work, the driving shaft 11 does not rotate at the moment, the stop ball 31 keeps blocking the water inlet pipe 21 under the action of the tension spring, so that the water inlet pipe 21 keeps closed, the cutting part 1 does not need to be cooled at the moment, and no water flow is sprayed out from the water outlet pipe 23. When cutting unit 1 during operation, drive shaft 11 drives cutting unit 1 rotatory, drive shaft 11 drives transmission shaft 41 simultaneously and rotates, drive shaft 41 drives slider 4221 when rotatory and rotates around transmission shaft 41, slider 4221 radially outwards slides along transmission shaft 41 under the inertial action of self, slider 4221 promotes the outside action of arc piece 4211, thereby make the diameter grow of ring portion 421, ring portion 421 promotes the activity that makes progress of gangbar 43, gangbar 43 drives stop ball 31 and removes along opening the direction, thereby make valve assembly 3's aperture increase, improve the water spray flow. When the rotating speed of the cutting part 1 is increased, the distance of outward sliding of the sliding block 4221 is increased correspondingly, so that the opening degree of the valve assembly 3 is increased, water flow is increased, when the rotating speed of the cutting part 1 is reduced, the sliding block 4221 moves inwards under the elastic action of the first elastic piece 4223, so that the opening degree of the valve assembly 3 is reduced, and therefore the device can adjust the water spraying amount according to the rotating speed of the cutting part 1, and the purpose of saving water resources is achieved.
The foregoing is considered as illustrative only of the principles and preferred embodiments of the application. It should be noted that, for a person skilled in the art, several other modifications can be made on the basis of the principle of the present application, and these should also be considered as the scope of protection of the present application.
Claims (10)
1. The cooling device for the cutting part of the coal mining machine is characterized by comprising the cutting part (1), a water spraying assembly for spraying water to the cutting part (1) and an adjusting assembly for adjusting the water quantity of the water spraying assembly;
the water spraying assembly comprises a water spraying pipeline (2), the adjusting assembly comprises a valve assembly (3), the valve assembly (3) is arranged in the water spraying pipeline (2), and the valve assembly (3) is linked with the cutting part (1) and can adjust the opening degree of the valve assembly (3) according to the rotating speed of the cutting part (1).
2. The cooling device for the cutting part of the coal mining machine according to claim 1, wherein the water spraying pipeline (2) comprises a water inlet pipe (21), a communicating pipe (22) and a water outlet pipe (23), the communicating pipe (22) communicates the water inlet pipe (21) and the water outlet pipe (23), the water outlet pipe (23) is provided in plurality, and the water outlet pipes (23) are arranged at intervals along the circumferential direction of the cutting part (1).
3. The shearer cutting unit cooling device according to claim 1, characterized in that the adjusting assembly further comprises a linkage assembly (4), the linkage assembly (4) being connected with the valve assembly (3), the linkage assembly (4) being linked with the cutting unit (1);
when the rotating speed of the cutting part (1) is increased, the linkage assembly (4) drives the valve assembly (3) to move towards the opening direction, so that the opening degree of the valve assembly (3) is increased, and the flow of the water spraying pipeline (2) is increased;
when the rotating speed of the cutting part (1) is reduced, the linkage assembly (4) drives the valve assembly (3) to move towards the closing direction, so that the opening degree of the valve assembly (3) is reduced, and the flow of the water spraying pipeline (2) is reduced.
4. The cutting unit cooling device of the coal mining machine according to claim 3, characterized by further comprising a drive shaft (11), wherein the drive shaft (11) is connected with the cutting unit (1) and drives the cutting unit (1) to rotate;
the linkage assembly (4) comprises a transmission shaft (41) and a radial moving part (42), the transmission shaft (41) is in transmission connection with the driving shaft (11), the radial moving part (42) is in movable connection with the transmission shaft (41) and can move along the radial direction of the transmission shaft (41), and the radial moving part (42) is in linkage with the valve assembly (3) and is used for controlling the opening degree of the valve assembly (3).
5. The cooling device for the cutting part of the coal mining machine according to claim 4, characterized in that the radial movable member (42) comprises a movable portion and a variable diameter circular portion (421), the movable portion is movably connected with the transmission shaft (41) and can move along the radial direction of the transmission shaft (41), the movable portion is connected with the circular portion (421), the circular portion (421) is linked with the valve assembly (3), and the movable portion can drive the diameter of the circular portion (421) to change along with the change of the rotating speed of the driving shaft (11).
6. The shearer cutting portion cooling device of claim 5, wherein the movable portion comprises at least 3 sets of sliding mechanisms (422), the sets of sliding mechanisms (422) being respectively disposed equidistantly around the drive shaft (41);
the sliding mechanism (422) comprises a sliding block (4221) and a sliding rail (4222), the sliding rail (4222) is fixedly connected with the transmission shaft (41) and arranged along the radial direction of the transmission shaft (41), the sliding block (4221) is arranged on the sliding rail (4222) in a sliding mode and can slide along the radial direction of the transmission shaft (41), and the sliding block (4221) is connected with the circular ring portion (421) and can drive the circular ring portion (421) to change the diameter.
7. The shearer cutting section cooling device according to claim 6, wherein the sliding mechanism (422) further comprises a first elastic member (4223), the first elastic member (4223) being disposed between the sliding block (4221) and the drive shaft (11) or between the circular ring portion (421) and the drive shaft (11);
when the driving shaft (11) rotates, the driving shaft (11) drives the sliding block (4221) to rotate around the driving shaft (11);
when the acting force of the sliding block (4221) in the radial direction outwards is larger than the elastic force of the first elastic piece (4223), the sliding block (4221) slides in the radial direction outwards and drives the circular ring part (421) to expand in diameter, and the circular ring part (421) drives the opening of the valve component (3) to increase;
when the acting force of the sliding block (4221) in the radial direction outwards is smaller than the elastic force of the first elastic piece (4223), the sliding block (4221) slides in the radial direction inwards and drives the circular ring part (421) to reduce in diameter, and the circular ring part (421) drives the opening of the valve component (3) to reduce.
8. The cooling device for the cutting part of the coal mining machine according to claim 6, characterized in that the circular ring (421) is of an elastic structure, and when the driving shaft (11) rotates, the driving shaft (11) drives the sliding block (4221) to rotate around the driving shaft (11);
when the acting force of the sliding block (4221) in the radial direction outwards is larger than the elastic force of the circular ring part (421), the sliding block (4221) drives the circular ring part (421) to expand in diameter, and the circular ring part (421) drives the opening of the valve component (3) to increase;
when the acting force of the sliding block (4221) in the radial direction outwards is smaller than the elastic force of the circular ring part (421), the diameter of the circular ring part (421) is reduced, and the circular ring part (421) drives the opening of the valve component (3) to be reduced.
9. The cooling device for the cutting part of the coal mining machine according to claim 5, characterized in that the circular ring part (421) consists of a plurality of groups of arc-shaped blocks (4211), the arc-shaped blocks (4211) are movably arranged along the radial direction of the driving shaft (11), the movable part is fixedly connected with the arc-shaped blocks (4211), the valve assembly (3) is linked with the arc-shaped blocks (4211), the movable part is driven to rotate when the driving shaft (11) rotates, and the movable part drives the arc-shaped blocks (4211) to rotate;
when the movable part moves outwards in the radial direction, the movable part drives the arc-shaped blocks (4211) to move outwards in the radial direction, so that the diameter of the circular ring part (421) is enlarged, and the arc-shaped blocks (4211) drive the valve component (3) to move towards the opening direction;
when the movable part moves inwards in the radial direction, the movable part drives the arc-shaped blocks (4211) to move inwards in the radial direction, so that the diameter of the circular ring part (421) is reduced, and the arc-shaped blocks (4211) drive the valve component (3) to move towards the closing direction.
10. The shearer cutter cooling device according to any one of claims 5 to 9, wherein the linkage assembly (4) further comprises a linkage rod (43), the linkage rod (43) being connected with the valve assembly (3), the linkage rod (43) being linked with the circular ring (421);
when the diameter of the circular ring part (421) is enlarged, the circular ring part (421) drives the linkage rod (43) to act, and the linkage rod (43) drives the valve component (3) to act towards the opening direction, so that the opening degree of the valve component (3) is increased;
when the diameter of the circular ring part (421) is reduced, the circular ring part (421) drives the linkage rod (43) to act, and the linkage rod (43) drives the valve component (3) to act towards the closing direction, so that the opening degree of the valve component (3) is reduced.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210126584.1A CN114251091B (en) | 2022-02-10 | 2022-02-10 | Cooling device for cutting part of coal mining machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210126584.1A CN114251091B (en) | 2022-02-10 | 2022-02-10 | Cooling device for cutting part of coal mining machine |
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