CN102927208B - A kind of continuous miner cutting reducer - Google Patents
A kind of continuous miner cutting reducer Download PDFInfo
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- CN102927208B CN102927208B CN201210469635.7A CN201210469635A CN102927208B CN 102927208 B CN102927208 B CN 102927208B CN 201210469635 A CN201210469635 A CN 201210469635A CN 102927208 B CN102927208 B CN 102927208B
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Abstract
The present invention relates to a kind of continuous miner cutting reducer, comprise two cut speed reducer elementary cells of left and right symplex structure, wherein: the cut speed reducer elementary cell of 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 fixing pick, is provided with three grades of decelerations in casing, and wherein the first order is slowed down as bevel gear structure, and slow down in the second level and final reduction is planetary gear train; The casing that planet carrier in final reduction stretches out speed reducer forms midway drive, and the planet carrier in final reduction is engaged with long main shaft by spline simultaneously, and the casing that the long main shaft the other end stretches out speed reducer is connected with end drive hub, forms end and drives; Transmission shaft and long main shaft are equipped with bearing support, and they are supported by selfaligning roller bearing, the second level slow down and final reduction in planet wheel be all supported in respective planet carrier by selfaligning roller bearing.
Description
Technical field
The present invention 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, coal industry is constantly towards mechanization, automation direction development, and the various mechanical coal mining such as coal winning machine equipment is more and more widely used among the coal production of various geological condition.
The tunnelling of continuous miner colliery and mine in one performing comprehensive coal mining equipment, 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, thus realizes comprehensive mechanical coal mining.Continuous miner cutting portion mainly comprises two cutting motors, cutting reducer and cutting drums, during work, power is exported to cutting drum by retarder by two cutting motors, utilize on cutting drum and the broken coal petrography of pick is housed, therefore cutting reducer is of paramount importance core component in continuous miner, and the quality of its Cutting Performance directly affects the throughput of continuous miner, digging speed and efficiency.
Please refer to Fig. 1, Fig. 1 is the cross section structure schematic diagram of continuous miner cutting reducer in prior art, briefly introduces the defect that cutting reducer exists at work below.
In prior art, as shown in Figure 1, this cutting reducer comprises two speed reducer be arranged symmetrically with 7, these two speed reducer first order adopt fixed shaft gear train transmission 12, the second level adopts mutually orthogonal bevel gear drive 11, and the third level adopts the planetary gear train transmission 10 that ring gear is fixed, planet carrier exports.These two speed reducer are all by giving a long main shaft 26 by transmission of power after above-mentioned three grades of decelerations, and long main shaft 26 drives cutting drum to rotate thus.When this retarder is installed, first install middle floating seal 27, rolling bearing 14, middle bearing bracket and midway drive wheel hub 13, then long main shaft 26 is penetrated installation from one end of retarder, drive hub and the end cap of finally installing two ends compress.
Continuous miner is in mine, colliery and engineering tunnel exploitation, and due to the complexity of geological condition, can produce strong impact when the rock that cut is hard, vibration is large, therefore can produce the parts such as rolling bearing 14 grade of cutting reducer inside and damage.Simultaneously, transmission shaft 17 due to cutting reducer of the prior art is positioned at the input end of second level transmission, its input torque is large, and the very little about 86mm of cutting speed reducer box height low speed joint transverse dimension, if too wide, then can leave very wide coal petrography and can not be broken during coal cutting rock, thus the object of coal petrography cutting can not be reached.Therefore by the restriction of cutting speed reducer box height low speed joint, transmission shaft 17 diameter can not do greatly, thus causes transmission shaft 17 insufficient strength, when retarder in the prior art works, often the faults such as transmission shaft 17 fracture occurs.In addition, in the prior art, middle floating seal 27 radial seal size is large, and floating seal seat requirement on machining accuracy is high, and installation requirement is harsh, often occurs the fault such as leakage of oil and floating seal 27 damage during work.Above-mentioned cutting reducer is after rolling bearing 14, floating seal 27 damage, whole long main shaft 26 need be disassembled, just can keep in repair, and the restriction in knocked down condition and space is subject to when down-hole, dismantle 26, whole long main shaft to be difficult to realize, can only the whole retarder of spot replace, cause difficult in maintenance, cost intensive.
Therefore, how on 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 transmission shaft simultaneously and fracture and the fault such as middle floating seal leakage of oil and damage often occur, is the problem that existing technical staff should solve.
Summary of the invention
The object of the invention is to: a kind of new continuous miner cutting reducer is provided, after solving traditional continuous miner cutting reducer internal bearings and the damage of middle floating seal, down-hole dismounting, installation, problem difficult in maintenance, simultaneously solve transmission shaft because of insufficient strength often occur fracture and middle floating seal often there is the fault such as leakage of oil and damage, maintain easily, reduce maintenance cost.
The object of the present invention is achieved like this: a kind of continuous miner cutting reducer, comprise two cut speed reducer elementary cells of left and right symplex structure, the intermediate output of two the cut speed reducer elementary cells in left and right is connected by flat key, cutting drum in the middle of common driving, two ends export the end cutting drum driving and be positioned at two ends each via flat key, 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 fixing pick, is provided with three grades of decelerations in casing, and wherein the first order is slowed down as bevel gear structure, and slow down in the second level and final reduction is planetary gear train; Transmission shaft one end is arranged in 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;
B, the first order slow down in bevel pinion engage with bevel gear wheel, bevel gear wheel and the second level slow down in sun gear spline joint;
Sun gear in c, second level deceleration and final reduction and planet carrier suspend and are sleeved on long main shaft, the casing that planet carrier in final reduction stretches out speed reducer forms midway drive, planet carrier in final reduction is engaged with long main shaft by spline simultaneously, the casing that the long main shaft the other end stretches out speed reducer is connected with end drive hub, forms end and drives;
D, transmission shaft and long main shaft are equipped with bearing support, and they are supported by selfaligning roller bearing, the second level slow down and final reduction in planet wheel be all supported in respective planet carrier by selfaligning roller bearing.
In the inventive solutions: one end that transmission shaft is positioned at high speed casing is connected with motor output shaft by internal spline, the other end is connected by the bevel pinion during external splines slows down with the first order.
In the inventive solutions: described end drive hub is connected with long main shaft by spline, end drive hub is also 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, 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; Power is passed to outer end cutting drum by flat key by end drive hub.
In the inventive solutions: the second level slow down in sun gear be connected by the bevel gear wheel during spline slows down with the first order; Planet carrier output terminal in the deceleration of the second level directly processes the internal tooth mated with sun gear in final reduction, and is directly engaged with the sun gear in final reduction by internal tooth.
In the inventive solutions: slow down in the second level and ring gear in final reduction is an one-piece element, and located by the casing of bolt and locating stud and speed reducer and fix.
In the inventive solutions: transmission shaft is provided with bearing support and axle sleeve, the outside framework oil seal with secondary lip is provided with between axle sleeve and bearing support; Planet carrier in final reduction is provided with transparent cover, and final reduction planet carrier output terminal is equipped with axle sleeve, and the outside framework oil seal with secondary lip is contained between axle sleeve and transparent cover.
In the inventive solutions: described axle sleeve is spacing by shaft block ring, is also furnished with O type circle in axle sleeve.
In the inventive solutions: be provided with float grease seal between described end drive hub and bearing support and seal.
The invention has the advantages that: between this retarder midway drive planet carrier and transparent cover, adopt the skeleton oil seal with secondary lip, because secondary lip has dustproof effect, therefore both there is the effect of the sealing gear oil of high reliability, can prevent again a large amount of dust from entering in retarder, thus cause the damage of bearing and gear; In addition, even if when the intermediate bearing of cutting reducer or outside framework oil seal are damaged, left and right two the mutually symmetrical and speed reducer that can exchange completely of this employing, only speed reducer on one side need be disassembled from cutting portion, again the transparent cover of centre being pulled down, the component keeping in repair and change damage can being carried out, without the need to being pulled down by long main shaft, substantially increase the operability that down-hole is safeguarded, reduce maintenance cost; Simultaneously, cutting reducer of the present invention, the first order adopts bevel gear drive, using the input shaft of transmission shaft as the first order, thus greatly reduce the moment acted on transmission shaft, substantially increase the intensity of transmission shaft, the requirement of cutting reducer operating mode can be met completely, improve the working life of cutting reducer; Cutting reducer of the present invention, second and third level is slowed down and is adopted planet gear transmission speed reduction, greatly reduces the volume and weight of cutting reducer.Adopt bolt closing between continuous miner cutting reducer and cutting arm, by the bearing support projection location in high speed casing, coaxial when ensureing that left and right cut speed reducer is installed.Cut speed reducer is all welded with fixing pick, can broken cutting drum can not the coal petrography of cut.Planet carrier output terminal in the deceleration of the second level directly processes the internal tooth mated with sun gear in final reduction, and is directly engaged with the sun gear in final reduction by internal tooth, simplifies linkage structure, makes retarder compacter.Compact structure of the present invention, easy to maintenance, reliable operation, safety coefficient is high, long service life.
Accompanying drawing explanation
Fig. 1 is continuous miner cutting reducer structural representation in prior art;
Fig. 2 is the structural representation of the embodiment of the present invention;
Fig. 3 is the partial enlarged view in I region in the embodiment of the present invention;
Fig. 4 is the partial enlarged view in II region in the embodiment of the present invention.
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, high speed casing, 8, end cap, 9, end drive hub, 10, 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, midway drive wheel hub, 14, rolling bearing, 15, bevel gear wheel, 16, bevel pinion, 17, transmission shaft, 18, ring gear, 19, with the outside framework oil seal of secondary lip, 20, transparent cover, 21, final reduction planet carrier, 22, shaft block ring, 23, final reduction 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
Accompanying drawing is nonrestrictive discloses concrete structure of the invention process, and below in conjunction with accompanying drawing, the present invention is further described.
As seen from Figure 2, the present invention includes two cut speed reducer elementary cells 1 of left and right symplex structure, the intermediate output 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, make a concerted effort to drive middle cutting drum, two ends export the end cutting drum driving and be positioned at two ends each via flat key 2, 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 fixing pick 4, is provided with three grades of decelerations in casing 3, and wherein the first order is slowed down as bevel gear structure, and slow down in the second level and final reduction is planetary gear train; Transmission shaft 17 one end is positioned at high speed casing 7 and is 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; The first order slow down in bevel pinion 16 engage with bevel gear wheel 15, bevel gear wheel 15 and the second level slow down in sun gear 25 spline joint; Planet carrier 24 in sun gear 25 in the deceleration of the second level, the sun gear 23 in final reduction and second level deceleration, the planet carrier 21 in final reduction suspend and are sleeved on long main shaft 26, the casing 3 that planet carrier 21 in final reduction stretches out speed reducer forms midway drive, planet carrier 21 in final reduction is engaged with long main shaft 26 by spline simultaneously, the casing 3 that long main shaft 26 the other end stretches out speed reducer is connected with end drive hub 9, forms end and drives; Transmission shaft 17 and long main shaft 26 are equipped with bearing support 5, and they are supported by selfaligning roller bearing 6.Planet wheel in the deceleration of the second level and the planet wheel in final reduction are all supported in respective planet carrier by selfaligning roller bearing 6.
In the present embodiment: one end that transmission shaft 17 is positioned at high speed casing 7 is connected with motor output shaft by internal spline, the other end is connected by the bevel pinion 16 during external splines slows down with the first order.
In the present embodiment: described end drive hub 9 is connected with long main shaft 26 by spline, end drive hub 9 is also 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.Long main shaft 26 is by spline and expansion set 28 pairs of end drive hub 9 carry-over moments; Power is passed to outer end cutting drum by flat key 2 by end drive hub 9.
In the present embodiment: described long main shaft 26 inner end is spacing by shaft block ring 22, prevent long main shaft 26 and final reduction planet carrier 21 axial float, outer end adopts end cap 8 to be connected with long main shaft 26 end by bolt 29, prevents end driving force wheel hub axial float.
In the present embodiment: the second level slow down in sun gear 25 be connected by the bevel gear wheel 15 during spline slows down with the first order; Planet carrier 24 output terminal in the deceleration of the second level directly processes the internal tooth mated with sun gear in final reduction 23, and is directly engaged with sun gear in final reduction 23 by internal tooth.
In the present embodiment: slow down in the second level and ring gear 18 in final reduction is an one-piece element, and located by the casing 3 of bolt 29 and locating stud and speed reducer and fix.
In the present embodiment: be provided with float grease seal 27 between described end drive hub 9 and bearing support 5 and seal, the radial dimension of sealing is little, can realize higher sealing effect, be in cutting reducer two ends dismounting, easy to maintenance simultaneously.
From Fig. 3 and Fig. 4, 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 in final reduction is provided with transparent cover 20, and final reduction planet carrier 21 output terminal is equipped with axle sleeve 30, and the outside framework oil seal 19 with secondary lip is contained between axle sleeve 30 and transparent cover 20.Because secondary lip has dustproof effect, there is the seal action of high reliability, can prevent a large amount of dust from entering in retarder.
In the present embodiment: described axle sleeve 30 is spacing by shaft block ring 22, is also furnished with O type circle 31 in axle sleeve 30.
Power transmission mode of the present invention 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 end by spline joint by transmission of power to bevel pinion 16, after first order bevel gear drive deceleration break-in, the input of the longitudinal direction of cutting motor is become horizontal output.Bevel gear wheel 15 by spline joint by transmission of power to second level deceleration sun gear 25; After being slowed down by the second level, second level reduction planetary carrier 24 adopts gear coupling to be connected with final reduction sun gear 23; After final reduction, a part of power is passed to middle cutting drum by middle flat key 2 by final reduction planet carrier 21, 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 friction carry-over moments, the opposing party's face length main shaft 26 is also provided with spline, this spline is connected with end drive hub 9, so the common carry-over moment of spline and expansion set 28 is to end drive hub 9, power is passed to the cutting drum of outer end by end drive hub 9 by the flat key 2 at two ends.
Claims (7)
1. a continuous miner cutting reducer, comprise two cut speed reducer elementary cells of left and right symplex structure, the output terminal of the midway drive of two the cut speed reducer elementary cells in left and right is connected by flat key, cutting drum in the middle of common driving, two ends export the end cutting drum driving and be positioned at two ends each via flat key, 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 fixing pick, is provided with three grades of decelerations in casing, and wherein the first order is slowed down as bevel gear structure, and slow down in the second level and final reduction is planetary gear train; Position, transmission shaft one end
Be connected in high speed casing and with the output terminal of motor, 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 in the deceleration of b, the first order engages with bevel gear wheel, bevel gear wheel and the second level slow down in sun gear spline joint, planet carrier output terminal in the deceleration of the second level directly processes the internal tooth mated with sun gear in final reduction, and is directly engaged with the sun gear in final reduction by internal tooth;
Sun gear in c, second level deceleration and final reduction and planet carrier suspend and are sleeved on long main shaft, the casing that planet carrier in final reduction stretches out speed reducer forms midway drive, planet carrier in final reduction is engaged with long main shaft by spline simultaneously, the casing that the long main shaft the other end stretches out speed reducer is connected with end drive hub, forms end and drives;
D, transmission shaft and long main shaft are equipped with bearing support, and they are supported by selfaligning roller bearing, the second level slow down and final reduction in planet wheel be all supported in respective planet carrier by selfaligning roller bearing.
2. continuous miner cutting reducer according to claim 1, is characterized in that: one end that transmission shaft is positioned at high speed casing is connected with motor output shaft by internal spline, and the other end is connected by the bevel pinion during external splines slows down with the first order.
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, end drive hub is also furnished with expansion set and end cap simultaneously, end cap is connected with long spindle nose by bolt, prevent end drive hub axial float, simultaneously by tightening the bolt on expansion set, extruding expansion set improves the frictional force of long main shaft and end drive hub, long main shaft by spline and expansion set to end drive hub carry-over moment; Power is passed to the end cutting drum at two ends by end drive hub by flat key.
4. continuous miner cutting reducer according to claim 1, is characterized in that: slow down in the second level and ring gear in final reduction is an one-piece element, and is located by the casing of bolt and locating stud and speed reducer and fix.
5. continuous miner cutting reducer according to claim 1, 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 in final reduction is provided with transparent cover, and final reduction planet carrier output terminal is equipped with axle sleeve, and the outside framework oil seal with secondary lip is contained between axle sleeve and transparent cover.
6. continuous miner cutting reducer according to claim 5, is characterized in that: described axle sleeve is spacing by shaft block ring, is also furnished with O type circle in axle sleeve.
7. continuous miner cutting reducer according to claim 1, is characterized in that: be provided with float grease seal between described end drive hub and bearing support and seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210469635.7A CN102927208B (en) | 2012-11-20 | 2012-11-20 | A kind of continuous miner cutting reducer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210469635.7A CN102927208B (en) | 2012-11-20 | 2012-11-20 | A kind of continuous miner cutting reducer |
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| CN102927208A CN102927208A (en) | 2013-02-13 |
| CN102927208B true CN102927208B (en) | 2016-03-23 |
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| CN110159293B (en) * | 2019-06-05 | 2021-06-11 | 辽宁工程技术大学 | Drilling and milling type cutting experiment mechanism of heading machine |
| CN110252473B (en) * | 2019-07-17 | 2024-06-14 | 山西煤矿机械制造股份有限公司 | Moment-limiting crushing roller |
| CN110242723B (en) * | 2019-07-17 | 2024-03-29 | 山西煤矿机械制造股份有限公司 | Torque-limiting speed reducer |
| CN110375035B (en) * | 2019-07-17 | 2024-03-29 | 山西煤矿机械制造股份有限公司 | Torque-limiting speed reducer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100617460B1 (en) * | 2005-03-30 | 2006-09-01 | 우영유압주식회사 | Compact variable transmission installed between bevel and differential gear |
| CN101059162B (en) * | 2007-02-14 | 2010-05-19 | 煤炭科学研究总院太原分院 | Speed reducer of continuous coal cutter |
| CN201530690U (en) * | 2009-09-23 | 2010-07-21 | 四川建设机械（集团）股份有限公司 | Large-tonnage tower crane hoisting mechanism |
| CN202280458U (en) * | 2011-10-21 | 2012-06-20 | 三一重型装备有限公司 | Coal mining machine and rocker arm thereof |
| CN202360089U (en) * | 2011-11-09 | 2012-08-01 | 三一重型装备有限公司 | rocker arm and coal mining machine with cutting motor arranged longitudinally |
| CN202992036U (en) * | 2012-11-20 | 2013-06-12 | 中传重型装备有限公司 | Cutting speed reducer of continuous coal mining machine |
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Effective date of registration: 20190724 Address after: 210012 Yuhuatai No. 3, Nanjing, Jiangsu Province Patentee after: Nanjing High-Speed & Accurate Gear Group Co., Ltd. Address before: 210000 No. 8 Tianze Road, Shangfang Industrial Park, Jiangning District, Nanjing City, Jiangsu Province Patentee before: China Transmission Heavy Equipment Co.,Ltd. |
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Effective date of registration: 20190930 Address after: 211103 No. 79 Jianheng Road, Jiangning District, Nanjing City, Jiangsu Province Co-patentee after: Nanjing High Precision Transmission Equipment Manufacturing Group Co., Ltd. Patentee after: Nanjing High Precision Gear Group Co., Ltd. Address before: 210012 Yuhuatai No. 3, Nanjing, Jiangsu Province Patentee before: Nanjing High Precision Gear Group Co., Ltd. |
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Effective date of registration: 20200430 Address after: 211103 No. 79 Jianheng Road, Jiangning District, Nanjing City, Jiangsu Province Patentee after: NANJING HIGH-SPEED & ACCURATE GEAR GROUP Co.,Ltd. Address before: 211103 No. 79 Jianheng Road, Jiangning District, Nanjing City, Jiangsu Province Co-patentee before: Nanjing High Precision Transmission Equipment Manufacturing Group Co., Ltd. Patentee before: NANJING HIGH-SPEED & ACCURATE GEAR GROUP Co.,Ltd. |