CN115539032A - Semi-suspension cutting device and thin coal seam coal mining machine - Google Patents
Semi-suspension cutting device and thin coal seam coal mining machine Download PDFInfo
- Publication number
- CN115539032A CN115539032A CN202211101661.4A CN202211101661A CN115539032A CN 115539032 A CN115539032 A CN 115539032A CN 202211101661 A CN202211101661 A CN 202211101661A CN 115539032 A CN115539032 A CN 115539032A
- Authority
- CN
- China
- Prior art keywords
- straight
- gear
- cutting
- tooth
- coal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003245 coal Substances 0.000 title claims abstract description 135
- 238000005065 mining Methods 0.000 title claims abstract description 53
- 239000000725 suspension Substances 0.000 title claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 135
- 230000005540 biological transmission Effects 0.000 claims abstract description 118
- 230000009467 reduction Effects 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000000498 cooling water Substances 0.000 claims description 11
- 238000005507 spraying Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000007667 floating Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 5
- 230000001050 lubricating effect Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000036544 posture Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C31/00—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
- E21C31/02—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for cutting or breaking-down devices
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C29/00—Propulsion of machines for slitting or completely freeing the mineral from the seam
- E21C29/22—Propulsion of machines for slitting or completely freeing the mineral from the seam by wheels, endless tracks or the like
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention relates to a semi-suspension cutting device and a thin coal seam coal mining machine, wherein the semi-suspension cutting device comprises a shell, and a cutting motor and a cutting transmission system which are arranged in the shell, the cutting transmission system comprises a first straight-tooth transmission mechanism, a second straight-tooth transmission mechanism, a third straight-tooth transmission mechanism and a planetary reduction mechanism which are sequentially connected in a transmission manner, the planetary reduction mechanism and the first straight-tooth transmission mechanism are positioned at the forefront in the front-back direction, the third straight-tooth transmission mechanism is positioned next to the third straight-tooth transmission mechanism, and finally, a second straight-tooth transmission mechanism is arranged at the end, the cutting motor is arranged at the mining side of the shell in the forward direction, and the rear part of the cutting motor and a motor cylinder body of the cutting motor overhang backwards and exceed the second straight-tooth transmission mechanism; the semi-suspension type cutting device is adopted by both the left cutting device and the right cutting device of the low seam mining machine. The invention can solve the contradiction between the height of the machine face of the thin seam coal mining machine, the installed power, the coal passing space and the stability and the adaptability of the whole machine, and the problems of inconvenient maintenance and high damage and replacement cost of the cutting motor.
Description
Technical Field
The invention relates to a cutting device suitable for a low seam coal mining machine and a coal mining machine applying the cutting device, and belongs to the technical field of coal mining machines.
Background
The coal cutter cutting device of conventional transverse arrangement (the transverse arrangement of the coal cutter cutting device means that the axis of a cutting motor is vertically arranged relative to the advancing direction of the coal cutter, namely the working face direction), because the cutting motor is arranged above two ledge surfaces of the scraper conveyor, the cutting motor can swing up and down along with the cutting device during coal cutting, the safety clearance with a hydraulic support can be influenced during upward swing, the machine face height is correspondingly increased, the coal passing space can be reduced during downward swing, the larger the motor power is, the larger the diameter is, the larger the size of the cutting motor directly influences the machine face height and the coal passing space, the thin coal cutter requires the lower machine face height and the certain coal passing space, and the improvement of the cutting power of the thin coal cutter is restricted.
In the past, the manufacturers proposed to arrange the cutting motor on the coal wall side in the reverse direction and on the same side of the conveyor as the planetary mechanism, and to utilize the space on the coal wall side to avoid the influence of the cutting motor on the height of the machine face and the coal passing space. However, the coal mining machine with the fully suspended arrangement mode has two disadvantages: on one hand, the cutting motor is reversely arranged on the coal wall side, the motor needs to be disassembled from the coal wall side, and the maintenance space required when the motor is disassembled exceeds the roller, so that the cutting motor can touch the solid coal wall which is not exploited by the roller, a special maintenance space needs to be exploited on the coal wall side when in maintenance, the working space of the working surface of the thin coal seam is narrow, and the maintenance and the replacement are very inconvenient; on the other hand, as the main structure part of the whole machine is completely suspended on the coal wall side, the gravity center of the whole machine deviates from the supporting sliding shoe, the stress condition of the coal mining machine in the operation process is deteriorated, the whole machine is difficult to adapt to the fluctuation of the bottom plate, and the operation stability and the adaptability of the coal mining machine are reduced.
Disclosure of Invention
The invention aims to provide a semi-suspension type cutting device and a thin seam coal mining machine, which can solve the problems of contradiction between the height of a machine face of the thin seam coal mining machine, installed power, coal passing space and the stability and adaptability of the whole machine, as well as inconvenience in maintenance and high damage and replacement cost of a cutting motor.
The main technical scheme of the invention is as follows:
the utility model provides a half overhang formula cutting device, includes the casing and installs cutting motor and cutting transmission system in the casing, cutting transmission system is including the first order straight-tooth drive mechanism, second level straight-tooth drive mechanism, third level straight-tooth drive mechanism and the planet reduction gears that the transmission connects in proper order, and the axis of all gears all is around the level extends in the cutting transmission system, and planet reduction gears and first order straight-tooth drive mechanism are located the forefront on the fore-and-aft direction, and second level straight-tooth drive mechanism is located the rearmost, and third level straight-tooth drive mechanism is located first, between the second level straight-tooth drive mechanism, cutting motor forward arranges the side of adopting at the casing, cutting motor's power take off end forward with first level straight-tooth drive mechanism's input gear coaxial coupling, third level straight-tooth drive mechanism's output gear forward with planet reduction gears coaxial coupling, cutting motor's rear portion and the motor barrel at cutting motor place backward overhang stretch and surpass second level straight-tooth drive mechanism.
The wiring cavity of the cutting motor is arranged in the motor barrel, and the wiring cavity is preferably arranged at the rear end part of the upper half part of the motor barrel and is in a backward overhanging state relative to the lower half part of the motor barrel.
The cutting motor is preferably a high power density motor.
First order straight-tooth drive mechanism includes according to the direction of drive external gearing's head end gear, idler and coal wall side gear wheel in proper order, second order straight-tooth drive mechanism includes according to the direction of drive external gearing's sky side shaft gear and sky side gear wheel in proper order, third level straight-tooth drive mechanism includes according to the direction of drive external gearing's coal wall side shaft gear in proper order, idler and terminal gear, first, among the tertiary straight-tooth drive mechanism the idler is an idler or a plurality of idlers of external gearing in proper order, coal wall side gear wheel and sky side shaft gear are rotatory respectively through two sets of bearings in the casing, coal wall side gear wheel passes through long spline shaft and the coaxial spline hookup of sky side shaft gear, coal wall side shaft gear is rotatory to be supported in the casing through two sets of bearings that are located its both ends, the sky side gear wheel cover is on coal wall side shaft gear wheel to with coal wall side shaft gear spline hookup, head end gear and terminal gear constitute respectively into first order straight-tooth drive mechanism's input gear and third level straight-tooth drive mechanism's output gear.
The coal wall side shaft gear can be matched with a corresponding hole of the mining side gearwheel through cylindrical surfaces at two ends of a spline of the coal wall side shaft gear to radially center the mining side gearwheel.
An oil storage cavity is arranged between the coal wall side large gear and the mining side shaft gear, and a long spline shaft for connecting the coal wall side large gear and the mining side shaft gear penetrates through the oil storage cavity.
The inner space of the shell is divided into a plurality of closed chambers, the first-stage straight-tooth transmission mechanism, the second-stage straight-tooth transmission mechanism, the third-stage straight-tooth transmission mechanism and the planetary reduction mechanism respectively occupy one closed chamber, and a rotary framework seal is arranged between every two adjacent closed chambers.
A low-pressure water channel and a high-pressure water channel which are not communicated with each other are arranged in a solid structure of the shell wall of the shell, a nozzle is arranged on the shell of the shell, and the inlet of the nozzle is communicated with the low-pressure water channel; the cooling water channel in the big end cover at the input end gear of the first stage straight-tooth transmission mechanism and the cooling water channel in the big end cover at the output end gear of the third stage straight-tooth transmission mechanism are both communicated with the high-pressure water channel, wherein the cooling water channel is connected with the tail end of the high-pressure water channel and is connected with the inlet of the inner spraying water supply mechanism.
A left cutting device and a right cutting device of the thin coal seam mining machine are both provided with the semi-suspension type cutting device, the left cutting device and the right cutting device are arranged on the left side and the right side of a machine body in a bilateral symmetry mode and are hinged to a left traction walking portion and a right traction walking portion respectively, under the condition that the thin coal seam mining machine and a scraper conveyor are installed in a matched mode, cutting motors are located above and on the inner side and the outer side of a coal wall side ledge of the scraper conveyor, the rear end of each cutting motor does not exceed the center of a middle groove of the scraper conveyor backwards, and a cutting transmission system is located on the outer side of the coal wall side ledge of the scraper conveyor.
The first-stage straight-tooth transmission mechanism is positioned in front of the scraper conveyer and keeps a certain interval with the scraper conveyer, and the second-stage straight-tooth transmission mechanism and the third-stage straight-tooth transmission mechanism are positioned above the coal shoveling plate outside the coal wall side ledge.
The left traction walking part shell and the right traction walking part shell are internally provided with a traction motor and a traction transmission system respectively, the traction transmission system comprises a first-stage straight-tooth transmission system, a second-stage straight-tooth transmission system and a two-stage planetary reduction mechanism, and most parts of the traction motor and the traction transmission system are arranged above the coal wall side ledge of the scraper conveyor.
The invention has the beneficial effects that:
the main body part (referred to as the cutting transmission system part of the cutting device) of the semi-suspension cutting device is arranged at the outer side of the coal wall side ledge of the scraper conveyor, the cutting motors are positioned above and at the inner side and the outer side of the coal wall side ledge of the scraper conveyor, and the rear end of the cutting motor does not exceed the center of the middle groove of the scraper conveyor backwards, so that the coal passing space above the middle groove of the scraper conveyor is released, the safety clearance with a hydraulic support is increased, the height of the machine face is relatively reduced, the influence of the cutting motor on the height of the machine face and the coal passing space is avoided, and therefore, the cutting motor with higher power can be configured, and the high-efficiency mining requirement of the working face of a thin coal seam is met.
The cutting motor is arranged on the mining side of the shell in the forward direction, so that the cutting motor is convenient to maintain and replace once being damaged, the cost is saved, and the labor intensity of workers is reduced.
The wiring cavity of the cutting motor is suspended on the upper half part of the motor barrel, and the coal passing space below the cutting motor is not influenced.
The cutting motor preferably adopts a high-power-density motor, so that the axial and radial sizes of the cutting motor can be smaller, and the matching requirements of a three-machine can be better met.
The cutting device is provided with a multi-section cavity-divided lubricating structure, so that the lubricating length of oil is shortened, the cutting device can be ensured to be fully lubricated in small closed spaces when in different postures, and the problem of difficulty in lubrication when the cutting device swings up and down is solved.
The thin seam coal mining machine adopts a brand new complete machine arrangement structure combining the semi-suspension type cutting device and the normal machine body, and effectively solves the contradiction among the installed power, the machine face height and the coal passing space. Because the gravity center of the whole coal mining machine is still positioned above the middle groove of the scraper conveyor, the problems of instability and poor adaptability of the coal mining machine in a full-suspension arrangement mode due to the fact that the gravity center is positioned on the coal wall side are solved, and the stability and the adaptability of the coal mining machine for the thin coal seam are greatly improved.
Drawings
Figure 1 is a front view of one embodiment of a semi-suspended cutting apparatus (left cutting apparatus) of the present invention;
FIG. 2 is a cross-sectional view of the embodiment of FIG. 1;
FIG. 3 is a top view of an embodiment of the thin seam mining machine;
FIG. 4 is a front view of an embodiment of the thin seam shearer;
FIG. 5 is a left side view of an embodiment of the thin seam shearer.
Reference numerals:
1. the automatic cutting machine comprises a shell, 2. A cutting motor, 3. A clutch system, 4. A head end gear, 5. An idler wheel, 6. A coal wall side large gear, 7. A coal wall side shaft gear, 8. An idler wheel, 9. An idler wheel, 10 planetary reduction gears, 11. An inner spraying water feeding mechanism, 12. A roller 13. A left cutting device, 14. A left traction walking part, 15. An electric cabinet, 16. A right traction walking part, 17. A right cutting device, 18. A scraper conveyer, A. A water inlet, B. A water inlet, C. A traction transmission system, D. A traction motor and E. An oil storage cavity.
Detailed Description
The invention discloses a semi-suspension type cutting device (which can be called as a cutting device for short), which comprises a shell 1, a cutting motor 2 and a cutting transmission system, wherein the cutting motor 2 and the cutting transmission system are arranged in the shell, and the cutting transmission system comprises a first-stage straight tooth transmission mechanism, a second-stage straight tooth transmission mechanism, a third-stage straight tooth transmission mechanism and a planetary reduction mechanism 10 which are sequentially connected in a transmission manner. The axes of all gears in the cutting transmission system horizontally extend from front to back. The planetary reduction mechanism and the first-stage straight-tooth transmission mechanism are positioned at the forefront in the front-back direction, the second-stage straight-tooth transmission mechanism is positioned at the rearmost, and the third-stage straight-tooth transmission mechanism is positioned between the first-stage straight-tooth transmission mechanism and the second-stage straight-tooth transmission mechanism. The planetary speed reducing mechanism and the first-stage straight tooth transmission mechanism are arranged side by side at intervals from left to right. The cutting motor is arranged on the mining side of the shell in the forward direction, the power output end of the cutting motor is connected with the input end gear of the first-stage straight-tooth transmission mechanism in the forward direction in a coaxial mode, and the cutting motor can be conveniently dismounted from the mining side of the shell. And a gear at the output end of the third-stage straight tooth transmission mechanism is forward and coaxially connected with a sun gear of the planetary reduction mechanism. The setting position of the first-stage straight-tooth transmission mechanism is close to the coal wall and far exceeds the second-stage and third-stage straight-tooth transmission mechanisms, more installation space can be made for the cutting motor, the cutting motor can be arranged more deviated to the coal wall side, and the influence of the cutting motor on the coal passing channel and the machine face height is greatly reduced. The rear part of the cutting motor and the motor barrel (belonging to a part of the shell) at which the cutting motor is arranged are hung backwards and exceed the second-stage straight-tooth transmission mechanism, namely the rear part of the cutting motor is positioned behind the cutting transmission system, and the whole cutting device is of an approximate h-shaped structure (see figure 2). The shell part where the first-stage straight tooth transmission mechanism is located can serve as a coal baffle plate, so that the roller 12 can be repeatedly charged with coal, and the coal charging effect of the roller is improved.
The power output end of the cutting motor can be connected with the input end gear of the first-stage straight-tooth transmission mechanism through a torque shaft, and the two ends of the torque shaft are preferably connected with the power output end of the cutting motor and the input end gear of the first-stage straight-tooth transmission mechanism through splines. The power is transmitted to the first-stage straight tooth transmission mechanism from the cutting motor through the torque shaft.
The clutch system 3 is arranged at the output end of the cutting motor and is matched with the input end gear of the first-stage straight tooth transmission mechanism to complete the on-off operation.
A wiring cavity of the cutting motor can be arranged in the motor cylinder. The wiring cavity is preferably arranged at the rear end part of the upper half part of the motor cylinder body and is in a state of being hung backwards relative to the lower half part of the motor cylinder body (as seen in a view angle of fig. 5), so that the space below the wiring cavity can be used for passing coal flow, and the coal passing space is increased.
The cutting motor preferably adopts a high-power-density motor, so that the axial and radial sizes of the cutting motor can be smaller, and the matching requirements of a three-machine can be better met.
The first-stage straight tooth transmission mechanism can comprise a head end gear 4, an idler gear 5 and a coal wall side gearwheel 6 which are sequentially meshed outwards in the transmission direction. The second-stage straight tooth transmission mechanism can comprise a mining side shaft gear and a mining side gearwheel which are sequentially and externally meshed in the transmission direction. The third stage straight tooth transmission mechanism can comprise a coal wall side shaft gear 7, idle gears 8 and 9 and a tail end gear which are sequentially and externally meshed in the transmission direction. The idle gear in the first and third stages of straight-tooth transmission mechanisms can be one idle gear or a plurality of idle gears which are externally meshed in sequence, and the number of the idle gears in the first stage of straight-tooth transmission mechanism and the number of the idle gears in the third stage of straight-tooth transmission mechanism can be different. The coal wall side large gear and the mining side shaft gear are respectively and rotatably supported in the shell through two groups of bearings, and the coal wall side large gear is connected with the mining side shaft gear through a long spline shaft and a coaxial spline. The first-stage straight-tooth transmission mechanism transmits power to the second-stage straight-tooth transmission mechanism through the long spline shaft. The coal wall side shaft gear is rotatably supported in the shell through two groups of bearings positioned at two ends of the coal wall side shaft gear, the mining side large gear is sleeved on the coal wall side shaft gear and is in spline connection with the coal wall side shaft gear, and the head end gear and the tail end gear respectively form an input end gear of the first-stage straight-tooth transmission mechanism and an output end gear of the third-stage straight-tooth transmission mechanism.
The shaft gear on the coal wall side can be matched with the corresponding hole of the large gear on the mining side through cylindrical surfaces at two ends of the spline to radially center the large gear on the mining side, so that the stability of spline connection is enhanced.
The planetary speed reducing mechanism can obtain lower output rotating speed and larger output torque, and the cutting capacity of the drum is improved. The planetary reduction mechanism adopts a transmission form of meshing four planet wheels, and has the advantages of compact structure, large transmission torque and reliable transmission. The planetary reduction mechanism mainly comprises a sun gear, a planet gear, an inner gear ring, a planet carrier, a bearing seat, a double-cone supporting bearing, a plane floating oil seal and a square connecting sleeve. The spline end of the sun gear of the planetary speed reducing mechanism is connected with the internal spline of the output end gear of the third-stage straight-tooth transmission mechanism, and power is transmitted to the planetary speed reducing mechanism from the third-stage straight-tooth transmission mechanism. When the sun wheel rotates, the planet wheel is driven to rotate around the axis of the sun wheel, the planet carrier is driven to rotate around the axis of the sun wheel, the inner gear ring is still, the planet carrier of the planet speed reducing mechanism is connected with the square connecting sleeve used for mounting the roller through the spline, and the torque is output to the roller. Because the planet speed reducing mechanism adopts a sun gear floating structure, the floating is sensitive, the counter torque is small, the floating amount is controlled by an external spline backlash matched with an output end gear of the third-stage straight-tooth transmission mechanism, and the uniform load among planet gears is ensured. The dynamic seal of the square connecting sleeve is realized through the floating oil seal, and the structure can adapt to the axial movement of the planetary speed reducing mechanism, so that the square connecting sleeve can work for a long time under the severe working condition with coal dust.
An oil storage cavity E is arranged between the coal wall side large gear and the mining side shaft gear, and a long spline shaft for connecting the coal wall side large gear and the mining side shaft gear penetrates through the oil storage cavity. The oil storage cavity can ensure that oil has a large enough circulation space so as to carry out sufficient heat exchange, promote the circulation of the oil, improve the heat dispersion performance and enable the temperature of the cutting device to quickly reach the thermal balance.
The inner space of the shell is preferably divided into a plurality of closed chambers, the first-stage straight-tooth transmission mechanism, the second-stage straight-tooth transmission mechanism, the third-stage straight-tooth transmission mechanism and the planetary reduction mechanism respectively occupy one closed chamber, and two rotary framework seals which are arranged back to back are arranged between every two adjacent closed chambers. The oil storage cavity is a part of a closed cavity occupied by the first-stage straight tooth transmission mechanism. In the process of up-and-down swinging of the rocker arm, oil of the first-stage straight tooth transmission mechanism cannot flow into the second-stage straight tooth transmission mechanism and the third-stage straight tooth transmission mechanism, and oil of the second-stage straight tooth transmission mechanism and the third-stage straight tooth transmission mechanism cannot flow into the planetary reduction mechanism. The multi-section cavity-divided lubricating system shortens the lubricating length of oil, ensures that the oil can be fully lubricated in respective smaller closed space when the cutting device is in different postures, and solves the problem of difficult lubrication when the cutting device swings up and down.
The solid structure of the shell wall of the shell is internally provided with a low-pressure water channel and a high-pressure water channel which are separated from each other and are not communicated with each other, and the low-pressure water channel and the high-pressure water channel respectively correspond to the water inlet A and the water inlet B in the figure 2. The water in the path A enters the low-pressure water channel from the water inlet A after being decompressed to 1.2MPa by the pressure reducing valve, the shell of the shell is provided with a nozzle, the inlet of the nozzle is communicated with the low-pressure water channel, and the cooling water in the low-pressure water channel is cooled by the shell and then sprayed out of the nozzle for external spray cooling, thereby playing a cooling role.
The cooling water channel in the big end cover at the input end gear of the first stage straight-tooth transmission mechanism and the cooling water channel in the big end cover at the output end gear of the third stage straight-tooth transmission mechanism are both communicated with the high-pressure water channel, wherein the latter is connected with the tail end of the high-pressure water channel and is connected with the inlet of the inner spraying water supply mechanism 11. The water in the B path directly enters the high-pressure water channel of the shell from the water inlet B without passing through a pressure reducing valve, then the high-temperature oil liquid near the input gear of the first-stage straight-tooth transmission mechanism is cooled by the tubular cooler, and then enters the cooling water channel in the input gear end cover of the first-stage straight-tooth transmission mechanism, the high-temperature oil liquid near the cooling end cover returns to the high-pressure water channel, and finally the cooling water channel in the output gear large end cover of the third-stage straight-tooth transmission mechanism is connected with the inner spraying water feeding mechanism, and is sprayed out from the nozzle on the roller 12 and used for inner spraying dust reduction, so that the dust reduction effect is achieved.
As shown in fig. 3, 4 and 5, the invention also discloses a thin coal seam mining machine, wherein the left cutting device 13 and the right cutting device 17 both adopt the semi-suspension type cutting device. The body of the coal mining machine is a three-section body and comprises an electric cabinet 15, and a left traction walking part 14 and a right traction walking part 16 which are arranged on two sides of the electric cabinet. The left cutting device and the right cutting device are symmetrically arranged on the left side and the right side of the machine body and are respectively hinged with the left traction walking part 14 and the right traction walking part 16. Under the state that the thin seam coal mining machine is installed with the scraper conveyor 18 in a matched mode, the whole cutting device is suspended on the coal wall side of the coal mining machine body in a half mode, namely the cutting motor is transversely located above and on the inner side and the outer side of the coal wall side ledge of the scraper conveyor, the rear end of the cutting motor does not exceed the center of the middle groove of the scraper conveyor backwards, and the cutting transmission system is located on the outer side of the coal wall side ledge of the scraper conveyor.
Compared with the conventional mode of arranging the cutting motors above the two ledges of the scraper conveyor, the arrangement mode of the cutting motors in the invention has the advantages that the coal passing height within the offset distance range is obviously increased due to the fact that more than half of the cutting motors are offset towards the coal wall side, and therefore the coal passing space is obviously increased; meanwhile, when the cutting device swings upwards and is heightened, the safety clearance between the cutting device and the hydraulic support is increased, interference between the cutting device and a top beam of the hydraulic support is avoided, and the height of the machine face is reduced compared with a conventional arrangement mode.
Because the position of the first-stage straight-tooth transmission mechanism of the cutting device far exceeds the second-stage straight-tooth transmission mechanism and the third-stage straight-tooth transmission mechanism and is close to the coal wall side, the rear part of the cutting motor is favorably ensured not to exceed the center of the scraper conveyor.
Furthermore, the first-stage straight-tooth transmission mechanism is positioned in front of the scraper conveyor and keeps a certain interval with the scraper conveyor, and the second-stage straight-tooth transmission mechanism and the third-stage straight-tooth transmission mechanism are positioned above the coal shoveling plate outside the coal wall side ledge, so that the influence on the coal passing space and the machine face height of the coal mining machine when the cutting device swings up and down can be avoided. Therefore, the cutting motor and the cutting transmission system do not influence the height of the machine surface and the coal passing space.
A traction motor D and a traction transmission system C are respectively arranged in the left traction walking part shell and the right traction walking part shell, and the traction transmission system comprises a first-stage straight-tooth transmission system, a second-stage straight-tooth transmission system and a two-stage planetary reduction mechanism. The traction motor and the traction transmission system are arranged above and at two sides of the coal wall side ledge of the scraper conveyor, so that the space above the coal wall side ledge and the space above the coal shoveling plate can be fully utilized, traction power is only output to the travelling wheels through the long shaft, the machine surface height above the two ledges of the scraper conveyor is reduced, the coal passing space is increased, and the machine surface height is reduced. Therefore, the traction motor D and the traction transmission system C do not have adverse effects on the machine surface height and the coal passing space. The structure effectively solves the contradiction among the installed power, the machine face height and the coal passing space, the gravity center of the whole coal mining machine is still positioned above the middle groove of the scraper conveyor, the problems of instability and poor adaptability of the coal mining machine in a full-suspension arrangement mode due to the fact that the gravity center is positioned on the coal wall side are solved, and the stability and the adaptability of the thin coal seam coal mining machine are greatly improved.
Except the shell, other internal parts of the left cutting device and the right cutting device can be interchanged.
The terms front and rear herein refer to a direction close to the coal wall side and a direction away from the coal wall side, respectively.
Claims (11)
1. The utility model provides a half suspension cutting device which characterized in that: including the casing and install cutting motor and the cutting drive system in the casing, cutting drive system is including the first order straight-tooth drive mechanism, second level straight-tooth drive mechanism, third level straight-tooth drive mechanism and the planetary reduction gear that the transmission connects in proper order, and the axis of all gears all is the front and back level extension in the cutting drive system, and planetary reduction gear and first order straight-tooth drive mechanism are located the forefront on the fore-and-aft direction, and second level straight-tooth drive mechanism is located the rearmost, and third level straight-tooth drive mechanism is located first, between the second level straight-tooth drive mechanism, the mining side at the casing is arranged to cutting motor forward, cutting motor's power take off end forward with first order straight-tooth drive mechanism's input gear coaxial coupling, third level straight-tooth drive mechanism's output gear forward with planetary reduction mechanism's sun gear coaxial coupling, cutting motor's rear portion and the motor barrel at place backward overhang stretch and surpass second level straight-tooth drive mechanism.
2. The semi-suspended cutting apparatus of claim 1, wherein: the cutting machine is characterized in that a wiring cavity of the cutting motor is arranged in the motor barrel, and the wiring cavity is arranged at the rear end part of the upper half part of the motor barrel and is in a backward overhanging state relative to the lower half part of the motor barrel.
3. The semi-suspended cutting apparatus of claim 1, wherein: the cutting motor adopts a high-power density motor.
4. The semi-suspended cutting apparatus of claim 1, wherein: first order straight-tooth drive mechanism includes according to the direction of drive external gearing's head end gear, idler and coal wall side gear wheel in proper order, second order straight-tooth drive mechanism includes according to the direction of drive external gearing's sky side shaft gear and sky side gear wheel in proper order, third level straight-tooth drive mechanism includes according to the direction of drive external gearing's coal wall side shaft gear in proper order, idler and terminal gear, first, among the tertiary straight-tooth drive mechanism the idler is an idler or a plurality of idlers of external gearing in proper order, coal wall side gear wheel and sky side shaft gear are rotatory respectively through two sets of bearings in the casing, coal wall side gear wheel passes through long spline shaft and the coaxial spline hookup of sky side shaft gear, coal wall side shaft gear is rotatory to be supported in the casing through two sets of bearings that are located its both ends, the sky side gear wheel cover is on coal wall side shaft gear wheel to with coal wall side shaft gear spline hookup, head end gear and terminal gear constitute respectively into first order straight-tooth drive mechanism's input gear and third level straight-tooth drive mechanism's output gear.
5. The semi-suspended cutting apparatus of claim 4, wherein: the shaft gear on the coal wall side is matched with the corresponding hole of the large gear on the mining side through cylindrical surfaces at two ends of a spline of the shaft gear on the coal wall side to radially center the large gear on the mining side.
6. The semi-suspended cutting apparatus of claim 4, wherein: an oil storage cavity is arranged between the coal wall side large gear and the mining side shaft gear, and a long spline shaft for connecting the coal wall side large gear and the mining side shaft gear penetrates through the oil storage cavity.
7. The semi-suspended cutting apparatus of claim 1, 2, 3, 4, 5 or 6, wherein: the inner space of the shell is divided into a plurality of closed chambers, the first-stage straight-tooth transmission mechanism, the second-stage straight-tooth transmission mechanism, the third-stage straight-tooth transmission mechanism and the planetary reduction mechanism respectively occupy one closed chamber, and a rotary framework seal is arranged between every two adjacent closed chambers.
8. Semi-suspended cutting apparatus as claimed in claim 1, 2, 3, 4, 5, 6 or 7, characterized in that: a low-pressure water channel and a high-pressure water channel which are not communicated with each other are arranged in a solid structure of the shell wall of the shell, a nozzle is arranged on the shell of the shell, and an inlet of the nozzle is communicated with the low-pressure water channel; the cooling water channel in the big end cover at the input end gear of the first stage straight-tooth transmission mechanism and the cooling water channel in the big end cover at the output end gear of the third stage straight-tooth transmission mechanism are both communicated with the high-pressure water channel, wherein the cooling water channel is connected with the tail end of the high-pressure water channel and is connected with the inlet of the inner spraying water supply mechanism.
9. A thin coal seam coal mining machine is characterized in that: the left cutting device and the right cutting device are respectively provided with the semi-suspension cutting device as claimed in any one of claims 1 to 8, the left cutting device and the right cutting device are symmetrically arranged on the left side and the right side of the machine body and are respectively hinged with the left traction walking part and the right traction walking part, the cutting motors are positioned above and at the inner side and the outer side of the coal wall side ledge of the scraper conveyor under the state that the thin coal seam mining machine and the scraper conveyor are installed in a matched mode, the rear end of the cutting motor does not exceed the center of the middle groove of the scraper conveyor backwards, and the cutting transmission system is positioned on the outer side of the coal wall side ledge of the scraper conveyor.
10. The thin seam shearer of claim 9, wherein: the first-stage straight-tooth transmission mechanism is positioned in front of the scraper conveyor and keeps a certain interval with the scraper conveyor, and the second-stage straight-tooth transmission mechanism and the third-stage straight-tooth transmission mechanism are positioned above the coal shoveling plate outside the coal wall side ledge.
11. The thin seam shearer of claim 10, wherein: the left traction walking part shell and the right traction walking part shell are internally provided with a traction motor and a traction transmission system respectively, the traction transmission system comprises a first-stage straight tooth transmission system, a second-stage straight tooth transmission system and a two-stage planetary reduction gear, and the whole traction motor and the large part of the traction transmission system are arranged above the coal wall side ledge of the scraper conveyor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211101661.4A CN115539032A (en) | 2022-09-09 | 2022-09-09 | Semi-suspension cutting device and thin coal seam coal mining machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211101661.4A CN115539032A (en) | 2022-09-09 | 2022-09-09 | Semi-suspension cutting device and thin coal seam coal mining machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115539032A true CN115539032A (en) | 2022-12-30 |
Family
ID=84725627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211101661.4A Pending CN115539032A (en) | 2022-09-09 | 2022-09-09 | Semi-suspension cutting device and thin coal seam coal mining machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115539032A (en) |
-
2022
- 2022-09-09 CN CN202211101661.4A patent/CN115539032A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113216957A (en) | External circulating lubrication and cooling system for coal mining machine and cutting device of coal mining machine | |
| CN114321292B (en) | Speed reducer with high stability | |
| CN101793307B (en) | Straight-tooth gear planetary transmission device of nuclear power water circulation cooling pump | |
| CN216866675U (en) | External circulating lubrication and cooling system for coal mining machine and cutting device of coal mining machine | |
| CN117685358B (en) | Industrial robot single-stage hypocycloid speed reducer | |
| CN115539032A (en) | Semi-suspension cutting device and thin coal seam coal mining machine | |
| CN115434703A (en) | Full-suspension cutting device and thin coal seam coal mining machine | |
| CN102562055A (en) | Rocker arm and roller transmission structure of roller coal-mining machine | |
| CN109751402A (en) | A kind of vehicle-mounted coal bed gas drilling machine power head reduction gearbox | |
| CN212892220U (en) | Scraper conveying device of composite furnace coke quenching equipment | |
| CN206170266U (en) | Brick machine disconnect -type wet -type vibrator | |
| CN214836328U (en) | Large-torque cutting transmission system of coal mining machine | |
| CN210800000U (en) | Gear circulation lubricating device of gearbox | |
| CN201915958U (en) | Rocker drum transmission structure of drum shearer | |
| CN212337272U (en) | Wide-adaptability cutting system of thin coal seam coal mining machine | |
| CN209511024U (en) | A kind of gear-box and hard rock mole | |
| CN113202467A (en) | H-shaped cutting device and high-power thin coal seam coal mining machine | |
| CN2931840Y (en) | Water supply end-face flow distribution cycloidal gear motor | |
| CN110360296A (en) | Detachable gear wheel mounting structure | |
| CN215332820U (en) | Cutting transmission main body part structure | |
| CN215332821U (en) | Cutting system of coal mining machine | |
| CN215332818U (en) | Compact transmission connection structure of cutting main body part of coal mining machine | |
| CN201646400U (en) | Rear power takeoff for gear box | |
| CN217833964U (en) | Novel multi-output-head high-speed spindle structure for woodworking machinery | |
| CN112855147A (en) | Compact transmission connection structure of cutting main body part of coal mining machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |