CN202992036U - Cutting speed reducer of continuous coal mining machine - Google Patents
Cutting speed reducer of continuous coal mining machine Download PDFInfo
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- CN202992036U CN202992036U CN 201220613777 CN201220613777U CN202992036U CN 202992036 U CN202992036 U CN 202992036U CN 201220613777 CN201220613777 CN 201220613777 CN 201220613777 U CN201220613777 U CN 201220613777U CN 202992036 U CN202992036 U CN 202992036U
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Abstract
The utility model relates to a cutting speed reducer of a continuous coal mining machine. The cutting speed reducer of the continuous coal mining machine comprises a left cutting speed reducing device basic unit and a right cutting speed reducing device basic unit which are symmetrical in structure, wherein each cutting speed reducing device basic unit of the cutting speed reducer comprises a high-speed box body and a speed reducing device, a transmission shaft is arranged between each high-speed box body and each speed reducing device, each speed reducing device comprises a box body, fixed cutting teeth are arranged on each box body, a three-level speed reduction device is arranged in each box body, each first-level speed reduction device is in a bevel gear structure, each second-level speed reduction device and each last-level speed reduction device are planetary gear trains, a planet carrier of each last-level speed reduction device extends out of the box body of each speed reduction device to form middle driving and is meshed with a long main shaft through a spline, the other end of the long main shaft extends out the box body of each speed reduction device and is connected with an end portion drive hub to form end portion driving, the transmission shafts and the long main shaft are all provided with bearing seats and are supported through self-aligning roller bearings, and planet wheels of the second-level speed reduction devices and the last-level speed reduction devices are supported in respective planet carriers through the self-aligning roller bearings.
Description
Technical field
The utility model relates to a kind of continuous miner cutting reducer.Be applicable to cantilever type transverse axis development machine and continuous miner.
Background technique
Along with the fast development of China's economic construction, constantly towards mechanization, automation direction development, the various mechanical coal mining equipment such as coal winning machine more and more are widely used among the coal production of various geological conditions in coal industry.
The continuous miner colliery is with tunnelling and mine in the performing comprehensive coal mining equipment of one, and it comprises cutting portion, running part, loading Department of Transportation and dust pelletizing system etc., is equipped with thereafter shuttle car and suspension roof support, thereby realizes comprehensive mechanical coal mining.The continuous miner cutting portion mainly comprises two cutting motors, cutting reducer and cutting drums, during work, two cutting motors are exported to cutting drum with power by retarder, utilize the broken coal petrography of pick is housed on cutting drum, therefore cutting reducer is of paramount importance core component in continuous miner, and the quality of its Cutting Performance directly affects throughput, digging speed and the efficient of continuous miner.
Please refer to Fig. 1, Fig. 1 is the cross section structure schematic diagram of continuous miner cutting reducer in prior art, and the below briefly introduces the defective that cutting reducer exists at work.
In prior art, as shown in Figure 1, this cutting reducer comprises two speed reducer that are arranged symmetrically with 7, these two speed reducer first order adopt fixed shaft gear train transmission 12, mutually orthogonal bevel gear drive 11 is adopted in the second level, and the third level is adopted the planetary gear train transmission 10 that ring gear is fixed, planet carrier is exported.These two speed reducer are all by giving a long main shaft 26 with transmission of power after above-mentioned three grades of decelerations, and long main shaft 26 drives the cutting drum rotation thus.When this retarder was installed, floating seal 27, rolling bearing 14, middle bearing bracket and intermediate driving wheel hub 13 in the middle of first installing then will long main shaft 26 penetrate installation from an end of retarder, and drive hub and end cap that two ends are installed at last compress.
Continuous miner due to the complexity of geological condition, can produce strong impact when the hard rock of cut in mine, colliery and engineering tunnel exploitation, vibration is large, therefore can produce rolling bearing 14 parts such as grade of cutting reducer inside and damage.Simultaneously, be positioned at the input end of second level transmission due to the transmission shaft 17 of cutting reducer of the prior art, its input torque is large, and the very little approximately 86mm of the high low speed of cutting speed reducer box joint transverse dimension, if too wide, staying very wide coal petrography in the time of can the coal cutting rock can not be broken, thereby can not reach the purpose of coal petrography cutting.Therefore be subjected to the restriction of the high low speed of cutting speed reducer box joint, transmission shaft 17 diameters can not be done greatly, thereby cause transmission shaft 17 insufficient strength, when retarder is in the prior art worked, the faults such as transmission shaft 17 fractures often occur.In addition, in the prior art, middle floating seal 27 radial seal sizes are large, and floating seal seat requirement on machining accuracy is high, and installation requirement is harsh, often occurs the faults such as leakage of oil and floating seal 27 damages during work.Above-mentioned cutting reducer is after rolling bearing 14, floating seal 27 damage, need whole long main shaft 26 is disassembled, just can keep in repair, and be subjected to the restriction in knocked down condition and space when the down-hole, dismantling 26, whole long main shaft is difficult to realize, can only on-the-spot change whole retarder, cause difficult in maintenancely, cost is expensive.
Therefore, how on the prior art basis, change the structure of cutting reducer, develop the dismounting of a kind of down-hole, installation, cutting reducer easy to maintenance, solving simultaneously the frequent fracture of transmission shaft and the faults such as middle floating seal leakage of oil and damage, is the problem that the existing technical staff should solve.
The model utility content
The purpose of this utility model is: a kind of new continuous miner cutting reducer is provided, after solving the damage of traditional continuous miner cutting reducer internal bearings and middle floating seal, down-hole dismounting, installation, problem difficult in maintenance, solve simultaneously transmission shaft and because of the frequent fracture of insufficient strength and middle floating seal, the faults such as leakage of oil and damage often occur, maintain easily, reduce maintenance cost.
The purpose of this utility model is achieved in that a kind of continuous miner cutting reducer, two cut speed reducer elementary cells that comprise left and right symplex structure, the middle output terminal of two the cut speed reducer elementary cells in left and right is connected by flat key, cutting drum in the middle of common the driving, two ends are exported by flat key separately and are driven the end cutting drum that is positioned at two ends, it is characterized in that:
The cut speed reducer elementary cell of a, cutting reducer comprises high speed casing and speed reducer, is provided with transmission shaft between described high speed casing and speed reducer; Described speed reducer comprises casing, and casing is provided with fixedly pick, is provided with three grades of decelerations in casing, and wherein first order deceleration is the bevel gear structure, and slow down in the second level and final stage is slowed down is planetary gear train; Transmission shaft one end is arranged in the high speed casing and is connected with the output terminal of motor, and the casing that the other end is arranged in speed reducer is connected with the bevel pinion that the first order is slowed down;
Bevel pinion during b, the first order are slowed down and bevel gear wheel engagement, the sun gear spline joint in slowing down in bevel gear wheel and the second level;
Sun gear during slow down in c, the second level and final stage is slowed down and planet carrier suspend and are sleeved on long main shaft, the casing that planet carrier during final stage is slowed down stretches out speed reducer forms middle the driving, planet carrier during final stage is slowed down is simultaneously by spline and long main shaft engagement, the casing that the long main shaft the other end stretches out speed reducer is connected with the end drive hub, forms the end and drives;
D, transmission shaft and long main shaft are equipped with bearing support, and they support by selfaligning roller bearing, and the planet wheel during slow down in the second level and final stage is slowed down all is supported in separately planet carrier by selfaligning roller bearing.
In the technical solution of the utility model: the end that transmission shaft is positioned at the high speed casing is connected with motor output shaft by internal spline, and the bevel pinion during the other end slows down by external splines and the first order is connected.
In the technical solution of the utility model: described end drive hub is connected with long main shaft by spline, the end drive hub also is furnished with expansion set and end cap simultaneously, end cap is connected with long spindle nose by bolt, prevent end driving force wheel hub axial float, simultaneously by tightening the bolt on expansion set, the extruding expansion set improves the frictional force of long main shaft and end drive hub with this, long main shaft by spline and expansion set to end drive hub carry-over moment; The end drive hub is passed to the outer end cutting drum by flat key with power.
In the technical solution of the utility model: the sun gear in slowing down in the second level is connected with bevel gear wheel in first order deceleration by spline; The internal tooth of sun gear coupling during planet carrier output terminal in slowing down in the second level is directly processed and slowed down with final stage, and the sun gear in slowing down by internal tooth and final stage directly meshes.
In the technical solution of the utility model: the ring gear during slow down in the second level and final stage is slowed down is an one-piece element, and locates fixing by the casing of bolt and locating stud and speed reducer.
In the technical solution of the utility model: be provided with bearing support and axle sleeve on transmission shaft, be provided with the outside framework oil seal with secondary lip between axle sleeve and bearing support; Planet carrier during final stage is slowed down is provided with transparent cover, and final stage reduction planetary carrier output terminal is equipped with axle sleeve, is contained between axle sleeve and transparent cover with the outside framework oil seal of secondary lip.
In the technical solution of the utility model: described axle sleeve is spacing by shaft block ring, also is furnished with O type circle in axle sleeve.
In the technical solution of the utility model: be provided with the float grease seal sealing between described end drive hub and bearing support.
The utility model has the advantage of: drive the skeleton oil seal that adopts between planet carrier and transparent cover with secondary lip in the middle of this retarder, because secondary lip has dustproof effect, therefore both had the effect of the sealing gear oil of high reliability, can prevent that again a large amount of dusts from entering in retarder, thereby cause the damage of bearing and gear; In addition, even when the intermediate bearing of cutting reducer or outside framework oil seal are damaged, left and right two the mutual symmetrical speed reducer that also can exchange fully of this employing, only need speed reducer is on one side disassembled from cutting portion, again the transparent cover of centre is pulled down, can be keeped in repair and change the component of damage, need not long main shaft is pulled down, greatly improve the operability that safeguard the down-hole, reduced maintenance cost; Simultaneously, cutting reducer of the present utility model, the first order adopts bevel gear drive, with the input shaft of transmission shaft as the first order, thereby greatly reduce the moment that acts on transmission shaft, greatly improve the intensity of transmission shaft, can meet the requirement of cutting reducer operating mode fully, improved the working life of cutting reducer; Cutting reducer of the present utility model, second and third level is slowed down and is adopted planet gear transmission speed reduction, has greatly reduced the volume and weight of cutting reducer.Adopt bolt closing between continuous miner cutting reducer and cutting arm, by the location of the bearing support projection in the high speed casing, guarantee when left and right cut speed reducer is installed coaxial.All be welded with fixedly pick on the cut speed reducer, can broken cutting drum can not cut coal petrography.The internal tooth of sun gear coupling during planet carrier output terminal in slowing down in the second level is directly processed and slowed down with final stage, and directly mesh by the sun gear in internal tooth and final stage deceleration, simplified linkage structure, make retarder compacter.The utility model compact structure, easy to maintenance, reliable operation, safety coefficient is high, long service life.
Description of drawings
Fig. 1 is continuous miner cutting reducer structural representation in prior art;
Fig. 2 is the utility model embodiment's structural representation;
Fig. 3 is the partial enlarged drawing in I zone in the utility model embodiment;
Fig. 4 be in the utility model embodiment the II zone partial enlarged view.
in figure, 1, the elementary cell of cut speed reducer, 2, flat key, 3, casing, 4, fixing pick, 5, bearing support, 6, selfaligning roller bearing, 7, the high speed casing, 8, end cap, 9, the end drive hub, 10, the final stage planetary gear train slows down, 11, second level bevel gear is slowed down, 12, first order fixed shaft gear train gearing down, 13, the intermediate driving wheel hub, 14, rolling bearing, 15, bevel gear wheel, 16, bevel pinion, 17, transmission shaft, 18, ring gear, 19, outside framework oil seal with secondary lip, 20, transparent cover, 21, the final stage reduction planetary carrier, 22, shaft block ring, 23, final stage deceleration sun gear, 24, second level reduction planetary carrier, 25, second level deceleration sun gear, 26, long main shaft, 27, floating seal, 28, expansion set, 29, bolt, 30, axle sleeve, 31, O type circle.
Embodiment
The nonrestrictive concrete structure that discloses the utility model enforcement of accompanying drawing further illustrates the utility model below in conjunction with accompanying drawing.
As seen from Figure 2, the utility model comprises two cut speed reducer elementary cells 1 of left and right symplex structure, the middle output terminal of two the cut speed reducer elementary cells 1 in left and right is connected by flat key 2, jointly output power to middle cutting drum, cutting drum in the middle of making a concerted effort to drive, two ends drive by flat key 2 outputs the end cutting drum that is positioned at two ends separately, wherein: the cut speed reducer elementary cell 1 of cutting reducer comprises high speed casing 7 and speed reducer, is provided with transmission shaft 17 between described high speed casing 7 and speed reducer; Described speed reducer comprises casing 3, and casing 3 is provided with fixedly pick 4, is provided with three grades of decelerations in casing 3, and wherein first order deceleration is the bevel gear structure, and slow down in the second level and final stage is slowed down is planetary gear train; Transmission shaft 17 1 ends are positioned at high speed casing 7 and are connected with the output terminal of motor, and the casing 3 that the other end is arranged in speed reducer is connected with the bevel pinion 16 that the first order is slowed down; Bevel pinion 16 during the first order is slowed down and bevel gear wheel 15 engagements, sun gear 25 spline joints during bevel gear wheel 15 slows down with the second level; Planet carrier 21 during planet carrier 24 in slowing down in sun gear 23 during sun gear 25 in slowing down in the second level, final stage are slowed down and the second level, final stage are slowed down suspends and is sleeved on long main shaft 26, the casing 3 that planet carrier 21 during final stage is slowed down stretches out speed reducer forms middle the driving, planet carrier 21 during final stage is slowed down is simultaneously by spline and long main shaft 26 engagements, the casing 3 that long main shaft 26 the other ends stretch out speed reducer is connected with end drive hub 9, forms the end and drives; Transmission shaft 17 and long main shaft 26 are equipped with bearing support 5, and they support by selfaligning roller bearing 6.Planet wheel during planet wheel in slowing down in the second level and final stage are slowed down all is supported in separately planet carrier by selfaligning roller bearing 6.
In the present embodiment: the end that transmission shaft 17 is positioned at high speed casing 7 is connected with motor output shaft by internal spline, and the bevel pinion 16 during the other end slows down by external splines and the first order is connected.
In the present embodiment: described end drive hub 9 is connected with long main shaft 26 by spline, end drive hub 9 also is furnished with expansion set 28 simultaneously, by tightening the bolt on expansion set, extruding expansion set 28 improves the frictional force of long main shaft 26 and end drive hub 9 with this.Main shaft 26 is by spline and 28 pairs of end drive hub 9 carry-over moments of expansion set; End drive hub 9 is passed to the outer end cutting drum by flat key 2 with power.
In the present embodiment: described long main shaft 26 inner ends are spacing by shaft block ring 22, prevent long main shaft 26 and final stage reduction planetary carrier 21 axial floats, the outer end adopts end cap 8 to be connected with long main shaft 26 ends by bolt 29, prevents end driving force wheel hub axial float.
In the present embodiment: the sun gear 25 in slowing down in the second level is connected with bevel gear wheel 15 in first order deceleration by spline; The internal tooth of sun gear 23 couplings during planet carrier 24 output terminals in slowing down in the second level are directly processed and slowed down with final stage, and in slowing down by internal tooth and final stage, sun gear 23 directly meshes.
In the present embodiment: the ring gear 18 during slow down in the second level and final stage is slowed down is an one-piece element, and locates fixing by the casing 3 of bolt 29 and locating stud and speed reducer.
In the present embodiment: be provided with float grease seal 27 sealings between described end drive hub 9 and bearing support 5, the radial dimension of sealing is little, can realize higher sealing effect, is in simultaneously cutting reducer two ends dismounting, easy to maintenance.
By Fig. 3 and Fig. 4 as seen, transmission shaft 17 is provided with bearing support 5 and axle sleeve 30, is provided with the outside framework oil seal 19 with secondary lip between axle sleeve 30 and bearing support 5; Planet carrier 21 during final stage is slowed down is provided with transparent cover 20, and final stage reduction planetary carrier 21 output terminals are equipped with axle sleeve 30, is contained between axle sleeve 30 and transparent cover 20 with the outside framework oil seal 19 of secondary lip.Because secondary lip has dustproof effect, have the seal action of high reliability, can prevent that a large amount of dusts from entering in retarder.
In the present embodiment: described axle sleeve 30 is spacing by shaft block ring 22, also is furnished with O type circle 31 in axle sleeve 30.
The utility model power transmission mode is: continuous miner cutting reducer input end is connected with cutting motor by the internal spline of transmission shaft 17, transmission shaft 17 the other ends by spline joint with transmission of power to bevel pinion 16, after first order bevel gear drive deceleration break-in, vertical input of cutting motor is become horizontal output.Bevel gear wheel 15 by spline joint with transmission of power to second level deceleration sun gear 25; After slowing down by the second level, second level reduction planetary carrier 24 adopts gear coupling to be connected with final stage deceleration sun gear 23; After slowing down by final stage, cutting drum final stage reduction planetary carrier 21 passes to a part of power by middle flat key 2 in the middle of, final stage planet carrier 21 is connected with long main shaft 26 by spline simultaneously, the other end of this long main shaft 26 is connected with expansion set 28, on the one hand by both carry-over moments that rubs, also be provided with spline on the opposing party's face length main shaft 26, this spline is connected with end drive hub 9, so spline and the common carry-over moment of expansion set 28 are to end drive hub 9, end drive hub 9 is passed to power the cutting drum of outer end by the flat key 2 at two ends.
Claims (8)
1., a kind of continuous miner cutting reducer, two cut speed reducer elementary cells that comprise left and right symplex structure, the middle output terminal of two the cut speed reducer elementary cells in left and right is connected by flat key, cutting drum in the middle of common the driving, two ends are exported by flat key separately and are driven the end cutting drum that is positioned at two ends, it is characterized in that:
The cut speed reducer elementary cell of a, cutting reducer comprises high speed casing and speed reducer, is provided with transmission shaft between described high speed casing and speed reducer; Described speed reducer comprises casing, and casing is provided with fixedly pick, is provided with three grades of decelerations in casing, and wherein first order deceleration is the bevel gear structure, and slow down in the second level and final stage is slowed down is planetary gear train; Transmission shaft one end is arranged in the high speed casing and is connected with the output terminal of motor, and the casing that the other end is arranged in speed reducer is connected with the bevel pinion that the first order is slowed down;
Bevel pinion during b, the first order are slowed down and bevel gear wheel engagement, the sun gear spline joint in slowing down in bevel gear wheel and the second level;
Sun gear during slow down in c, the second level and final stage is slowed down and planet carrier suspend and are sleeved on long main shaft, the casing that planet carrier during final stage is slowed down stretches out speed reducer forms middle the driving, planet carrier during final stage is slowed down is simultaneously by spline and long main shaft engagement, the casing that the long main shaft the other end stretches out speed reducer is connected with the end drive hub, forms the end and drives;
D, transmission shaft and long main shaft are equipped with bearing support, and they support by selfaligning roller bearing, and the planet wheel during slow down in the second level and final stage is slowed down all is supported in separately planet carrier by selfaligning roller bearing.
2. continuous miner cutting reducer according to claim 1, it is characterized in that: the end that transmission shaft is positioned at the high speed casing is connected with motor output shaft by internal spline, and the other end is connected with bevel pinion during the first order is slowed down by external splines.
3. continuous miner cutting reducer according to claim 1, it is characterized in that: described end drive hub is connected with long main shaft by spline, the end drive hub also is furnished with expansion set and end cap simultaneously, end cap is connected with long spindle nose by bolt, prevent end drive hub axial float, by tightening the bolt on expansion set, the extruding expansion set improves the frictional force of long main shaft and end drive hub simultaneously, long main shaft by spline and expansion set to end drive hub carry-over moment; The end drive hub is passed to the outer end cutting drum by flat key with power.
4. continuous miner cutting reducer according to claim 1 is characterized in that: the sun gear in slowing down in the second level is connected with bevel gear wheel in first order deceleration by spline; The internal tooth of sun gear coupling during planet carrier output terminal in slowing down in the second level is directly processed and slowed down with final stage, and the sun gear in slowing down by internal tooth and final stage directly meshes.
5. continuous miner cutting reducer according to claim 1 is characterized in that: the ring gear during slow down in the second level and final stage is slowed down is an one-piece element, and locates by the casing of bolt and locating stud and speed reducer and fix.
6. continuous miner cutting reducer according to claim 1, it is characterized in that: transmission shaft is provided with bearing support and axle sleeve, is provided with the outside framework oil seal with secondary lip between axle sleeve and bearing support; Planet carrier during final stage is slowed down is provided with transparent cover, and final stage reduction planetary carrier output terminal is equipped with axle sleeve, is contained between axle sleeve and transparent cover with the outside framework oil seal of secondary lip.
7. continuous miner cutting reducer according to claim 6 is characterized in that: described axle sleeve is spacing by shaft block ring, also is furnished with O type circle in axle sleeve.
8. continuous miner cutting reducer according to claim 1, is characterized in that: be provided with the float grease seal sealing between described end drive hub and bearing support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220613777 CN202992036U (en) | 2012-11-20 | 2012-11-20 | Cutting speed reducer of continuous coal mining machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220613777 CN202992036U (en) | 2012-11-20 | 2012-11-20 | Cutting speed reducer of continuous coal mining machine |
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| Publication Number | Publication Date |
|---|---|
| CN202992036U true CN202992036U (en) | 2013-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220613777 Withdrawn - After Issue CN202992036U (en) | 2012-11-20 | 2012-11-20 | Cutting speed reducer of continuous coal mining machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN202992036U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927208A (en) * | 2012-11-20 | 2013-02-13 | 中传重型装备有限公司 | Cutting reducer for continuous miner |
| CN103511478A (en) * | 2013-10-11 | 2014-01-15 | 无锡洲翔成套焊接设备有限公司 | Gear synchronous adjusting mechanism of spraying positioner |
| CN104234713A (en) * | 2013-06-24 | 2014-12-24 | 李仕清 | Composite rotary-cut mining machine |
| CN104613162A (en) * | 2014-12-31 | 2015-05-13 | 中国煤炭科工集团太原研究院有限公司 | Speed reducer of diggingbolt group cutting device |
| CN105003259A (en) * | 2014-04-20 | 2015-10-28 | 李仕清 | Composite rotary-cutting mining machine |
| CN109252858A (en) * | 2018-08-31 | 2019-01-22 | 沃德传动（天津）股份有限公司 | A kind of towing tank driving wheel structure and assembly technology |
-
2012
- 2012-11-20 CN CN 201220613777 patent/CN202992036U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927208A (en) * | 2012-11-20 | 2013-02-13 | 中传重型装备有限公司 | Cutting reducer for continuous miner |
| CN104234713A (en) * | 2013-06-24 | 2014-12-24 | 李仕清 | Composite rotary-cut mining machine |
| CN103511478A (en) * | 2013-10-11 | 2014-01-15 | 无锡洲翔成套焊接设备有限公司 | Gear synchronous adjusting mechanism of spraying positioner |
| CN105003259A (en) * | 2014-04-20 | 2015-10-28 | 李仕清 | Composite rotary-cutting mining machine |
| CN104613162A (en) * | 2014-12-31 | 2015-05-13 | 中国煤炭科工集团太原研究院有限公司 | Speed reducer of diggingbolt group cutting device |
| CN104613162B (en) * | 2014-12-31 | 2017-12-08 | 中国煤炭科工集团太原研究院有限公司 | A kind of decelerator of rock tunnelling bolting combined machine cutting means |
| CN109252858A (en) * | 2018-08-31 | 2019-01-22 | 沃德传动（天津）股份有限公司 | A kind of towing tank driving wheel structure and assembly technology |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130612 Effective date of abandoning: 20160323 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |