AU2014231578A1 - High-pressure water jet assisted cutting mechanism for heading machine - Google Patents
High-pressure water jet assisted cutting mechanism for heading machine Download PDFInfo
- Publication number
- AU2014231578A1 AU2014231578A1 AU2014231578A AU2014231578A AU2014231578A1 AU 2014231578 A1 AU2014231578 A1 AU 2014231578A1 AU 2014231578 A AU2014231578 A AU 2014231578A AU 2014231578 A AU2014231578 A AU 2014231578A AU 2014231578 A1 AU2014231578 A1 AU 2014231578A1
- Authority
- AU
- Australia
- Prior art keywords
- pressure water
- high pressure
- spray
- cutting
- duct
- 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.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 132
- 239000007921 spray Substances 0.000 claims abstract description 61
- 238000003466 welding Methods 0.000 claims abstract description 23
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 21
- 230000000712 assembly Effects 0.000 claims abstract description 11
- 238000000429 assembly Methods 0.000 claims abstract description 11
- 230000008878 coupling Effects 0.000 claims abstract description 8
- 238000010168 coupling process Methods 0.000 claims abstract description 8
- 238000005859 coupling reaction Methods 0.000 claims abstract description 8
- 239000003595 mist Substances 0.000 claims description 15
- 238000005507 spraying Methods 0.000 claims description 11
- 239000000428 dust Substances 0.000 abstract description 5
- 239000003245 coal Substances 0.000 description 6
- 238000009412 basement excavation Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C45/00—Methods of hydraulic mining; Hydraulic monitors
- E21C45/02—Means for generating pulsating fluid jets
- E21C45/04—Means for generating pulsating fluid jets by use of highly pressurised liquid
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C27/00—Machines which completely free the mineral from the seam
- E21C27/20—Mineral freed by means not involving slitting
- E21C27/24—Mineral freed by means not involving slitting by milling means acting on the full working face, i.e. the rotary axis of the tool carrier being substantially parallel to the working face
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
A high-pressure water jet assisted cutting mechanism for a heading machine comprises a drive apparatus (1), a reducer (2), a cutting arm (3), a cutting head (4), a built-in inner spray and high-pressure water delivery system (5) all sequentially connected. The drive apparatus (1) comprises a motor, a connection frame (1-3) and an output shaft I (1-4). The reducer (2) comprises: a reducer casing, a coupling sleeve (2-1), a sun shaft I (2-2), a first stage planet carrier, a sun shaft II (2-3), a second stage planet carrier, and an output shaft II (2-4). The cutting arm (3) comprises a main spindle (3-1), a housing (3-2), and a connection flange (3-3). The cutting head (4) comprises hydraulic cutting tooth assemblies (4-1), a nozzle (4-2), and a cutting head welding assembly (4-3). The inner spray and high-pressure water delivery system (5) comprises a spray water input duct (5-1), a high-pressure water input duct (5-2), a spray water path (5-3), a high-pressure water pipe (5-4), a spray water output duct (5-5), a high-pressure water output duct (5-6), a spray chamber (5-7), and a high-pressure water chamber (5-8). Based on keeping an inner spray system, high-pressure water is introduced, the layout is proper, the structure is compact, and the objectives of improving efficiency, reducing work dust, and extending service life of a cutting tool are achieved.
Description
1 High Pressure Water Jet Assisted Cutting Mechanism for Heading Machine Technical Field The present invention relates to a cutting mechanism, which is a major component associated to a heading machine in engineering equipment for coal mines, mining 5 areas, and tunnels, and employs high pressure water jet for cutting assistance. Technical Background As the mechanized excavation technology for underground headings in coal mines is developed, the continuously improved mechanized excavation tools still can not meet the production requirements. Low power heading machines for excavation in half-coal 10 rocks with thin coal seam, dirt bands, and coal rocks with minor faults have low excavation efficiency, but increasing the power without changing the cutting mechanism to solve the above problems will inevitably result in severe wearing of the cutting tools and bring potential safety hazards. Therefore, it is an urgent task to develop a high pressure water jet assisted cutting mechanism for heading machine; 15 however, there would be too much water at the working face and have a strong impact on coal recovery if high pressure water is used for dust suppression. Thus, a cutting mechanism for heading machine, which introduces high pressure water jet while keeping the internal spraying system, must be developed. Contents of the Invention 20 Object of the invention: in view of the technical problems in the prior art, the object of the present invention is to provide a high pressure water jet assisted cutting mechanism, which can improve working efficiency, reduce working dust, and prolong the service life of cutter. To solve the technical problems described above, the present invention employs the 25 following technical solution: a high pressure water jet assisted cutting mechanism for heading machine, comprising a drive unit, a reducer, a cutting arm, a cutting head, and an internal spraying and high pressure water delivery system, wherein, the drive unit comprises electric motors, a connecting frame, and an output shaft I, the 30 motors are arranged on the connecting frame, and one end of the output shaft I is connected to the rotation shafts of the motors; the reducer comprises a reducer casing, a coupling sleeve, a sun shaft I, a first stage planet carrier, a sun shaft II, a second stage planet carrier, and an output shaft II, one end of the reducer casing is fixed to the connecting frame, the two ends of the 35 coupling sleeve are connected to the other end of the output shaft I and the sun shaft I respectively, and the sun shaft I is connected to one end of the output shaft II via the first stage planet carrier, the sun shaft II, and the second stage planet carrier sequentially; the cutting arm comprises a main spindle, a housing, and a connection flange, one end 2 of the housing is fixed to the other end of the reducer casing, the connection flange is rotatably fitted over the other end of the housing, and one end of the main spindle is connected to the other end of the output shaft II; the cutting head comprises hydraulic cutting tooth assemblies, nozzles, and a cutting 5 head welding assembly, the tail end of the cutting head welding assembly is fixed to the connection flange, the middle part of the cutting head welding assembly is connected to the other end of the main spindle, the hydraulic cutting tooth assemblies and the nozzles are arranged on the surface of the front end of the cutting head welding assembly; 10 the internal spraying and high pressure water delivery system comprises a spray water input duct, a high pressure water input duct, a spray water path, a high pressure water pipe, a spray water output duct, a high pressure water output duct, a spray mist chamber, and a high pressure water chamber, the spray water input duct, spray water path, spray water output duct, and spray mist chamber communicate sequentially with 15 the nozzles, and the high pressure water input duct, high pressure water pipe, high pressure water output duct, and high pressure water chamber communicate sequentially with the hydraulic cutting tooth assemblies. In the present invention, further, the spray water input duct is arranged on the housing, the high pressure water input duct is arranged on the connecting frame, the connecting 20 frame, output shaft I, sun shaft I, sun shaft II, output shaft II, main spindle, and cutting head welding assembly are arranged with a center hole respectively, the high pressure water pipe runs through the center holes, the clearance between the high pressure water pipe and the center holes of the main spindle and the center holes of cutting head welding assembly forms the spray water path; and the spray water output duct, 25 high pressure water output duct, spray mist chamber, and high pressure water chamber are arranged on the cutting head welding assembly. In the present invention, further, the electric motors comprise motor I and motor II, the motor I and motor II are arranged symmetrically on two sides of the connecting frame. 30 In the present invention, further, an end seal is arranged between the main spindle and the output shaft II. In the present invention, further, a separating seal is arranged between the spray water path and the high pressure water output duct. Benefits: according to the invention, on the basis of keeping an internal spraying 35 system, high pressure water is introduced, the layout is reasonable, the structure is compact, and the purposes of improving efficiency, reducing working dust, and prolonging service life of cutting tools are realized. Description of Drawings Fig. 1 is a sectional view of the high pressure water jet assisted cutting mechanism for 40 heading machine according to the present invention; 3 Fig.2 is a sectional view of the internal spraying and high pressure water delivery system. In the figures: 1 - drive unit, 1-1 - motor I, 1-2 - motor II, 1-3 - connecting frame, 1-4 - output shaft I, 2 - reducer, 2-1 - coupling sleeve, 2-2 - sun shaft I, 2-3 - sun shaft II, 5 2-4 - output shaft II, 3 - cutting arm, 3-1 - main spindle, 3-2 - housing, 3-3 connection flange, 4 - cutting head, 4-1 - hydraulic cutting tooth assembly, 4-2 nozzle, 4-3 - cutting head welding assembly, 5 - internal spraying and high pressure water delivery system, 5-1 - spray water input duct, 5-2 - high pressure water input duct, 5-3 - spray water path, 5-4 - high pressure water pipe, 5-5 - spray water output 10 duct, 5-6 - high pressure water output duct, 5-7 - spray mist chamber, 5-8 - high pressure water chamber, 5-9 - end seal, 5-10 - separating seal. Embodiments Hereunder the present invention will be further detailed, with reference to the accompanying drawings. 15 As shown in Fig. 1 and Fig.2, the high pressure water jet assisted cutting mechanism for heading machine according to the present invention comprises a drive unit 1, a reducer 2, a cutting arm 3, a cutting head 4, and an internal spraying and high pressure water delivery system 5. The drive unit 1 comprises a motor I 1-1, a motor II 1-2, a connecting frame 1-3, and 20 an output shaft I 1-4. The motor I 1-1 and motor 11 1-2 are arranged symmetrically on two sides of the connecting frame 1-3, the output shaft I 1-4 is arranged on the middle part of the connecting frame 1-3, and one end of the output shaft I 1-4 is connected to the rotation shafts of motor I -1 and motor 111-2 via gears respectively. The reducer 2 is a two-stage planetary reducer, comprising a reducer casing, a 25 coupling sleeve 2-1, a sun shaft I 2-2, a first stage planet carrier, a sun shaft II 2-3, a second stage planet carrier, and an output shaft II 2-4. One end of the reducer casing is fixed to the connecting frame 1-3 by bolts. The two ends of the coupling sleeve 2-1 are connected via involute splines to the other end of the output shaft I 1-4 and the sun shaft I 2-2 respectively, the sun shaft I 2-2 is connected to the first stage planet carrier 30 via a gear, the first stage planet carrier is connected to the sun shaft II 2-3 via an involute spline, the sun shaft II 2-3 is connected to the second stage planet carrier via a gear, and the second stage planet carrier is connected to one end of the output shaft II 2-4 via an involute spline. The cutting arm 3 comprises a main spindle 3-1, a housing 3-2, and a connection 35 flange 3-3. One end of the housing 3-2 is fixed to the other end of the reducer casing by bolts, the connection flange 3-3 is rotatably fitted over the other end of the housing 3-2, and one end of the main spindle 3-1 is connected to the other end of the output shaft II 2-4 via an involute spline. The cutting head 4 comprises hydraulic cutting tooth assemblies 4-1, nozzles 4-2, and 40 a cutting head welding assembly 4-3. The tail end of the cutting head welding 4 assembly 4-3 is fixed to the connection flange 3-3 by bolts, the middle part of the cutting head welding assembly 4-3 is connected to the other end of the main spindle 3-1 via an involute spline, and the hydraulic cutting tooth assemblies 4-1 and nozzles 4-2 are arranged on the surface of the front end of the cutting head welding assembly 5 4-3. The internal spraying and high pressure water delivery system 5 comprises a spray water input duct 5-1, a high pressure water input duct 5-2, a spray water path 5-3, a high pressure water pipe 5-4, a spray water output duct 5-5, a high pressure water output duct 5-6, a spray mist chamber 5-7, and a high pressure water chamber 5-8. 10 The spray water input duct 5-1 is arranged on the housing 3-2, the high pressure water input duct 5-2 is arranged on the connecting frame 1-3; the connecting frame 1-3, output shaft I 1-4, sun shaft I 2-2, sun shaft II 2-3, output shaft II 2-4, main spindle 3-1, and cutting head welding assembly 4-3 are arranged with a center hole respectively, the high pressure water pipe 5-4 runs through the center holes; the 15 clearance between the high pressure water pipe 5-4 and the center holes of main spindle 3-1 and the center holes of cutting head welding assembly 4-3 forms the spray water path 5-3; the spray water output duct 5-5, high pressure water output duct 5-6, spray mist chamber 5-7, and high pressure water chamber 5-8 are arranged on the cutting head welding assembly 4-3, and the spray mist chamber 5-7 and the high 20 pressure water chamber 5-8 are separated from each other by a partition plate. The spray water input duct 5-1, spray water path 5-3, spray water output duct 5-5, and spray mist chamber 5-7 communicate sequentially with the nozzles 4-2, forming an internal spraying system. The high pressure water input duct 5-2, high pressure water pipe 5-4, high pressure water output duct 5-6, and high pressure water chamber 5-8 25 communicate sequentially with the hydraulic cutting tooth assemblies 4-1, forming a high pressure water jetting system. In addition, to prevent the spray water from flowing towards the reducer 2, an end seal 5-9 is added between the main spindle 3-1 and the output shaft II 2-4; to prevent the high pressure water from flowing towards the spray mist chamber 5-7, a separating seal 5-10 is arranged between the spray 30 water path 5-3 and the high pressure water output duct 5-6, and a separating seal 5-10 is also arranged at the partition plate between the spray mist chamber 5-7 and the high pressure water chamber 5-8. Working principle: the motor I 1-1 and motor II 1-2 on the drive unit 1 transfer mechanical power to the output shaft I 1-4 at the same time, and then the mechanical 35 power is transferred to the main spindle 3-1 of the cutting arm via the two-stage planetary mechanism, to drive the entire cutting head 4 to rotate and cut; at the same time, internal spray water and high pressure water are injected into the spray water input duct 5-1 and high pressure water input duct 5-2 respectively, and enter into the cutting head 4 via the spray water path 5-3 and the high pressure water pipe 5-4, 40 wherein, the internal spray water enters into the spray mist chamber 5-7 via the spray water output duct 5-5 and then is injected into the each of nozzles 4-2 to create spray mist for dust suppression; the high pressure water enters into the high pressure water chamber 5-8 via the high pressure water output duct 5-6 and then is injected into each 5 of the hydraulic cutting tooth assemblies 4-1 to create water jets for cutting assistance. While the present invention has been illustrated and described with reference to some preferred embodiments, the present invention is not limited to these. Those skilled in the art should recognize that various variations and modifications can be made 5 without departing from the spirit and scope of the present invention. All of such variations and modifications shall be deemed as falling into the protected scope of the present invention.
Claims (5)
1. A high pressure water jet assisted cutting mechanism for heading machine, comprising a drive unit (1), a reducer (2), a cutting arm (3), a cutting head (4), 5 and an internal spraying and high pressure water delivery system (5), wherein, the drive unit (1) comprises electric motors, a connecting frame (1-3), and an output shaft I (1-4), the motors are arranged on the connecting frame (1-3), one end of the output shaft 1 (1-4) is connected with the rotation shafts of the motors; the reducer (2) comprises a reducer casing, a coupling sleeve (2-1), a sun shaft I 10 (2-2), a first stage planet carrier, a sun shaft 11 (2-3), a second stage planet carrier, and an output shaft II (2-4), one end of the reducer casing is fixed to the connecting frame (1-3), the two ends of the coupling sleeve (2-1) are connected to the other end of the output shaft I (1-4) and the sun shaft I (2-2) respectively, the sun shaft I (2-2) is connected to one end of the output shaft 11 (2-4) via the 15 first stage planet carrier, the sun shaft 11 (2-3), and the second stage planet carrier sequentially; the cutting arm (3) comprises a main spindle (3-1), a housing (3-2), and a connection flange (3-3), one end of the housing (3-2) is fixed to the other end of the reducer casing, the connection flange (3-3) is rotatably fitted over the other 20 end of the housing (3-2), and one end of the main spindle (3-1) is connected to the other end of the output shaft 11 (2-4); the cutting head (4) comprises hydraulic cutting tooth assemblies (4-1), nozzles (4-2), and a cutting head welding assembly (4-3), the tail end of the cutting head welding assembly (4-3) is fixed to the connection flange (3-3), the middle part of 25 the cutting head welding assembly (4-3) is connected to the other end of the main spindle (3-1), the hydraulic cutting tooth assemblies (4-1) and the nozzles (4-2) are arranged on the surface of the front end of the cutting head welding assembly (4-3); the internal spraying and high pressure water delivery system (5) comprises a 30 spray water input duct (5-1), a high pressure water input duct (5-2), a spray water path (5-3), a high pressure water pipe (5-4), a spray water output duct (5-5), a high pressure water output duct (5-6), a spray mist chamber (5-7), and a high pressure water chamber (5-8), the spray water input duct (5-1), spray water path (5-3), spray water output duct (5-5), and spray mist chamber (5-7) communicate 35 sequentially with the nozzles (4-2), the high pressure water input duct (5-2), high pressure water pipe (5-4), high pressure water output duct (5-6), and high pressure water chamber (5-8) communicate sequentially with the hydraulic cutting tooth assemblies (4-1).
2. The high pressure water jet assisted cutting mechanism for heading machine 40 according to claim 1, wherein, the spray water input duct (5-1) is arranged on the 7 housing (3-2), the high pressure water input duct (5-2) is arranged on the connecting frame (1-3), the connecting frame (1-3), output shaft 1 (1-4), sun shaft I (2-2), sun shaft 11 (2-3), output shaft 11 (2-4), main spindle (3-1), and cutting head welding assembly (4-3) are arranged with a center hole respectively, the 5 high pressure water pipe (5-4) runs through the center holes, the clearance between the high pressure water pipe (5-4) and the center holes of the main spindle (3-1) and the center holes of cutting head welding assembly (4-3) forms the spray water path (5-3); and the spray water output duct (5-5), high pressure water output duct (5-6), spray mist chamber (5-7), and high pressure water 10 chamber (5-8) are arranged on the cutting head welding assembly (4-3).
3. The high pressure water jet assisted cutting mechanism for heading machine according to claim 1 or 2, wherein, the electric motors comprise motor I (1-1) and motor 11 (1-2), the motor 1 (1-1) and motor 11 (1-2) are arranged symmetrically on two sides of the connecting frame (1-3). 15
4. The high pressure water jet assisted cutting mechanism for heading machine according to claim 1 or 2, wherein, an end seal (5-9) is provided between the main spindle (3-1) and the output shaft 11 (2-4).
5. The high pressure water jet assisted cutting mechanism for heading machine according to claim 1 or 2, wherein, a separating seal (5-10) is arranged between 20 the spray water path (5-3) and the high pressure water output duct (5-6).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310076719.9A CN103195429B (en) | 2013-03-11 | 2013-03-11 | High pressure water jet assisted cutting mechanism for heading machine |
| CN201310076719.9 | 2013-03-11 | ||
| PCT/CN2014/071066 WO2014139339A1 (en) | 2013-03-11 | 2014-01-22 | High-pressure water jet assisted cutting mechanism for heading machine |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| AU2014231578A1 true AU2014231578A1 (en) | 2014-11-27 |
| AU2014231578B2 AU2014231578B2 (en) | 2016-03-17 |
| AU2014231578B8 AU2014231578B8 (en) | 2016-04-21 |
Family
ID=
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113464577A (en) * | 2021-05-10 | 2021-10-01 | 凯盛重工有限公司 | Adjustable eccentric transmission system for working arm of heading machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113464577A (en) * | 2021-05-10 | 2021-10-01 | 凯盛重工有限公司 | Adjustable eccentric transmission system for working arm of heading machine |
| CN113464577B (en) * | 2021-05-10 | 2022-07-15 | 凯盛重工有限公司 | Adjustable offset transmission system for working arm of heading machine |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112014000088B4 (en) | 2016-12-15 |
| WO2014139339A1 (en) | 2014-09-18 |
| ZA201407047B (en) | 2016-07-27 |
| DE112014000088T5 (en) | 2015-01-22 |
| CN103195429B (en) | 2014-12-10 |
| CN103195429A (en) | 2013-07-10 |
| AU2014231578B2 (en) | 2016-03-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TH | Corrigenda |
Free format text: IN VOL 30 , NO 11 , PAGE(S) 1580 UNDER THE HEADING APPLICATIONS ACCEPTED - NAME INDEX UNDER THE NAME SCIENCE ACADEMY OF CHINA UNIVERSITY OF MINING AND TECHNOLOGY, APPLICATION NO. 2014231578, UNDER INID (71) CORRECT THE APPLICANT NAME TO CHINA UNIVERSITY OF MINING AND TECHNOLOGY |
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| FGA | Letters patent sealed or granted (standard patent) | ||
| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |