CN109555530B - Cutting head connecting structure of heavy tunneling machine and tunneling machine - Google Patents
Cutting head connecting structure of heavy tunneling machine and tunneling machine Download PDFInfo
- Publication number
- CN109555530B CN109555530B CN201811516738.8A CN201811516738A CN109555530B CN 109555530 B CN109555530 B CN 109555530B CN 201811516738 A CN201811516738 A CN 201811516738A CN 109555530 B CN109555530 B CN 109555530B
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- China
- Prior art keywords
- cutting head
- nut
- heavy
- counter bore
- heading machine
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- 238000005520 cutting process Methods 0.000 title claims abstract description 106
- 230000005641 tunneling Effects 0.000 title description 4
- 230000001681 protective effect Effects 0.000 claims abstract description 31
- 239000004519 grease Substances 0.000 claims abstract description 13
- 230000001050 lubricating effect Effects 0.000 claims abstract description 13
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000011435 rock Substances 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1006—Making by using boring or cutting machines with rotary cutting tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1006—Making by using boring or cutting machines with rotary cutting tools
- E21D9/104—Cutting tool fixtures
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Road Repair (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention relates to the field of manufacturing of heavy-duty heading machines, in particular to a cutting head connecting structure of a heavy-duty heading machine and the heading machine, which comprise a cutting head, a cutting main shaft and a floating sealing seat, wherein the cutting head and the end part of the cutting main shaft are axially connected and fixed through at least two groups of studs and super nuts; the front end of the cutting head is provided with cutting head counter bores with the same number as that of the studs, and the outer side end of the studs is in threaded fit with a super nut arranged in the cutting head counter bore; the nut protective cover is detachably arranged on the outer side of the cutting head counter bore, the sealing space formed by the nut protective cover and the cutting head counter bore is filled with lubricating grease, and the lubricating grease is commonly used No. 2 extreme pressure lithium-based lubricating grease for a development machine.
Description
Technical Field
The invention relates to the field of manufacturing of heavy heading machines, in particular to a cutting head connecting structure of a heavy heading machine and the heavy heading machine.
Background
In China, aiming at coal mine all-rock tunnels or public and railway all-rock tunnels with the rock hardness f less than or equal to 12, a large-power heavy cantilever type heading machine is mostly selected. Because the tunnel environment is quite severe, the high-power heavy cantilever type heading machine has higher requirements on safety, stability and maintenance convenience, and particularly aims at the cutting heads participating in direct rock breaking, the cutting head connecting structure is required to be safe and reliable, the cutting heads are not easy to loosen in the use process, and the installation and maintenance are simple and convenient.
At present, a cutting head of a high-power heavy-duty cantilever type heading machine is generally axially connected with a cutting main shaft through two M30 or larger bolts, and the two bolts are screwed down according to a certain moment value to prevent loosening. In the practical use process, the connection mode has the following problems: firstly, the bolt tightening torque is larger and generally exceeds 1800N.m, while the bolt Zhou Weibu is provided with a pick box, a torque multiplier cannot be used, and the bolt tightening torque is time-consuming and labor-consuming only through a torque wrench; secondly, the two bolts are directly screwed by a torque wrench, so that enough and correct pretightening force is not easy to generate, the bolts are easy to loosen under the condition that a heading machine cuts rocks and vibrates greatly, and the connecting spline of the cutting head and the cutting main shaft is severely worn; thirdly, when the cutting head is dismounted once or the loose connecting bolt is replaced once, the connecting bolt is required to be directly screwed once, and excessive abrasion and scrapping of threads matched with the bolt on the cutting main shaft are easily caused.
Disclosure of Invention
The invention aims to overcome the defects described in the background art, thereby realizing a heavy-duty heading machine cutting head connecting structure and a heading machine, wherein the tightening is time-saving and labor-saving, threads matched with a stud on a cutting main shaft are not easy to wear, and the connection is reliable and is not easy to loosen.
In order to achieve the above purpose, the technical scheme of the invention is as follows: the cutting head connecting structure of the heavy-duty heading machine comprises a cutting head, a cutting main shaft and a floating seal seat which is sleeved on the cutting main shaft and has an axial positioning function on the cutting head, wherein the cutting head is axially connected and fixed with the end part of the cutting main shaft through at least two groups of studs and super nuts, and the cutting head is circumferentially positioned and connected with the cutting main shaft through splines; the front end of the cutting head is provided with cutting head counter bores with the same number as that of the studs, the studs are inserted from the bottom of the cutting head counter bores, the inner side end of each stud is in threaded fit with the cutting spindle, the outer side end of each stud is in threaded fit with a super nut arranged in each cutting head counter bore, and the depth of each cutting head counter bore is larger than the height of each super nut; the outside of the cutter head counter bore is detachably provided with a nut protective cover, a sealed space formed by the nut protective cover and the cutter head counter bore is filled with lubricating grease, and the lubricating grease is generally No. 2 extreme pressure lithium-based lubricating grease commonly used by a development machine;
the super nut comprises a nut body, pushing screws and a hard washer, at least 6 pushing threaded through holes are axially formed in the circumference of the outer edge of the nut body, the pushing screws are matched in the pushing threaded through holes, the length of each pushing screw is larger than that of each pushing threaded through hole, the hard washer is sleeved on the periphery of the double-end stud between the nut body of the super nut and the bottom surface of the counter bore of the cutting head, the hard washer is tightly attached to the bottom surface of the counter bore of the cutting head, and the tail ends of the pushing screws are propped against the outer side of the hard washer.
As the preferable technical scheme of the invention, one end of the stud matched with the super nut is coaxially provided with the outer hexagonal head of the stud, so that the other end of the stud can be conveniently screwed into the cutting main shaft by a tool.
The head end of the pushing screw is coaxially provided with an outer hexagon head of the pushing screw, so that the pushing screw can be conveniently screwed into and penetrates through the pushing threaded through hole by a tool.
As a preferable technical scheme of the invention, a cover body through hole with internal threads is axially arranged at the center of the nut protective cover, a protective cover bolt is matched in the cover body through hole, and the nut protective cover is fixedly arranged at the outer end face of the stud through the protective cover bolt; the outer side of the cover body through hole is coaxially provided with a protective cover counter bore, and the protective cover bolt is screwed into the cover body through hole in a matched mode from the bottom of the protective cover counter bore.
As a preferable technical scheme of the invention, the outer surface of the nut protective cover is spherical, and a spigot is processed on the inner side of the nut protective cover and is in excessive fit with the counter bore of the cutting head.
The invention also provides a heading machine, which is provided with the cutting head connecting structure of the heavy heading machine.
The cutting head connecting structure of the heavy-duty heading machine and the heading machine have the beneficial effects that:
1. according to the cutting head connecting structure of the heavy-duty heading machine, the pushing screw on the super nut is screwed by using the tool, the pushing screw can prop against the bottom surface of the counter bore of the cutting head or the hard gasket, so that the stud can obtain enough and correct pretightening force through pure tension, the cutting head fixing bolt is not easy to loosen under the conditions that the heading machine cuts rock and vibrates greatly, and the condition that the cutting head and the cutting main shaft are seriously worn is avoided.
2. According to the cutting head connecting structure of the heavy-duty heading machine, provided by the invention, the stud can obtain enough and correct pretightening force only by screwing the pushing screw by using an ordinary wrench, the cutting head is simple and convenient to fix, and the conditions of larger screw tightening torque and difficult single screw tightening are avoided.
3. According to the heavy-duty heading machine cutting head connecting structure, the detachable nut protective cover is used for preventing the super nut from being extruded and worn in the heading machine cutting process, the lubricating grease can prevent sludge, dust and the like from contacting with the super nut, an antirust effect is achieved, and threads matched with the stud on the cutting main shaft are not easy to wear.
4. The cutting head connecting structure of the heavy-duty heading machine has the advantages of reliable and durable cutting head connection, convenient and quick maintenance, high reliability and difficult damage.
Drawings
FIG. 1 is a schematic structural view of a heavy duty heading machine cutter head connection structure of the present invention;
fig. 2 is an enlarged schematic view of the structure of fig. 1 a.
In the figure: the novel high-strength steel ball screw comprises a 1-cutting head, a 2-cutting main shaft, a 3-floating sealing seat, a 4-double-end stud, a 401-double-end stud outer hexagon head, a 5-super nut, a 501-nut main body, a 502-pushing screw, a 521-pushing screw outer hexagon head, a 6-spline, a 7-cutting head counter bore, an 8-nut protective cover, a 801-protective cover counter bore, a 9-protective cover bolt, a 10-spigot and an 11-hard washer.
Detailed Description
The cutting head connecting structure of the heavy-duty heading machine and the heading machine are described in more detail below by means of specific embodiments with reference to the accompanying drawings.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Examples:
the invention discloses a cutting head connecting structure of a heavy-duty heading machine, which comprises a cutting head 1, a cutting main shaft 2 and a floating seal seat 3 sleeved on the cutting main shaft 2 and having an axial positioning function on the cutting head 1, wherein the cutting head 1 is axially connected and fixed with the end part of the cutting main shaft 2 through two groups of studs 4 and super nuts 5, and the cutting head 1 is circumferentially positioned and connected with the cutting main shaft 2 through splines 6; the front end of the cutting head 1 is provided with cutting head counter bores 7 the same as the number of the studs 4, the studs 4 are inserted from the bottom of the cutting head counter bores 7, the inner side end of the studs 4 is in threaded fit with the cutting spindle 2, the outer side end of the studs 4 is in threaded fit with a super nut 5 arranged in the cutting head counter bores 7, and the depth of the cutting head counter bores 7 is larger than the height of the super nut 5; the outside of the cutter head counter bore 7 is detachably provided with a nut protective cover 8, a closed space formed by the nut protective cover 8 and the cutter head counter bore 7 is filled with lubricating grease, and the lubricating grease adopts No. 2 extreme pressure lithium-based lubricating grease commonly used by a development machine;
the super nut 5 comprises a nut main body 501, a pushing screw 502 and a hard washer 11, 6 pushing threaded through holes are axially formed in the circumference of the outer edge of the nut main body 501, the pushing screw 502 is matched and arranged in the pushing threaded through holes, the length of the pushing screw 502 is larger than that of the pushing threaded through holes, the hard washer 11 is sleeved on the periphery of the stud 4 between the nut main body 501 of the super nut 5 and the bottom surface of the cutting head counter bore 7, the hard washer 11 is tightly attached to the bottom surface of the cutting head counter bore 7, and the tail end of the pushing screw 502 is propped against the outer side of the hard washer 11.
One end of the stud 4 matched with the super nut 5 is coaxially provided with a stud outer hexagon head 401, so that the other end of the stud 4 can be conveniently screwed into the cutting main shaft 2 by a tool; the head end of the pushing screw 502 is coaxially provided with a pushing screw outer hexagon 521, so that the pushing screw 502 can be conveniently screwed into and pass through the pushing threaded through hole by a tool.
A cap body through hole with internal threads is axially formed in the center of the nut protective cap 8, a protective cap bolt 9 is arranged in the cap body through hole in a matched mode, and the nut protective cap 8 is fixedly arranged at the outer end face of the stud 4 through the protective cap bolt 9; the outer side of the cover body through hole is coaxially provided with a protective cover counter bore 801, and the protective cover bolt 9 is screwed into the cover body through hole in a matched manner from the bottom of the protective cover counter bore 801; the outer surface of the nut protection cover 8 is a spherical surface, a spigot 10 is processed on the inner side of the nut protection cover 8, and the spigot 10 and the cutter head counter bore 7 form excessive fit.
The invention also provides a heading machine, which is provided with the cutting head connecting structure of the heavy heading machine, and because the cutting head connecting structure is the same as the cutting head connecting structure, description is not repeated, and other structures and structural characteristics of the heading machine are all in the prior art, so that redundant description is omitted.
The foregoing description of the exemplary embodiments of the invention is not intended to limit the scope of the invention, and any equivalent changes and modifications made by those skilled in the art without departing from the spirit and principles of the invention should be considered as falling within the scope of the invention.
Claims (8)
1. The utility model provides a heavy entry driving machine cutting head connection structure which characterized in that: the cutting head is axially connected and fixed with the end part of the cutting spindle through at least two groups of studs and super nuts, and the cutting head is circumferentially positioned and connected with the cutting spindle through splines; the front end of the cutting head is provided with cutting head counter bores with the same number as that of the studs, the studs are inserted from the bottom of the cutting head counter bores, the inner side end of each stud is in threaded fit with the cutting spindle, the outer side end of each stud is in threaded fit with a super nut arranged in each cutting head counter bore, and the depth of each cutting head counter bore is larger than the height of each super nut; the nut protective cover is detachably arranged on the outer side of the cutting head counter bore, and the sealing space formed by the nut protective cover and the cutting head counter bore is filled with lubricating grease;
the super nut comprises a nut body, pushing screws and a hard washer, at least 6 pushing threaded through holes are axially formed in the circumference of the outer edge of the nut body, the pushing screws are matched in the pushing threaded through holes, the length of each pushing screw is larger than that of each pushing threaded through hole, the hard washer is sleeved on the periphery of the double-end stud between the nut body of the super nut and the bottom surface of the counter bore of the cutting head, the hard washer is tightly attached to the bottom surface of the counter bore of the cutting head, and the tail ends of the pushing screws are propped against the outer side of the hard washer.
2. The heavy-duty heading machine cutting head connection structure as defined in claim 1, wherein: one end of the stud matched with the super nut is coaxially provided with an outer hexagonal head of the stud, and the other end of the stud is conveniently screwed into the cutting main shaft by a tool.
3. The heavy-duty heading machine cutting head connection structure as defined in claim 1, wherein: the head end of the pushing screw is coaxially provided with an outer hexagon head of the pushing screw, so that the pushing screw can be conveniently screwed into and penetrates through the pushing threaded through hole by a tool.
4. The heavy-duty heading machine cutting head connection structure as defined in claim 1, wherein: the nut protecting cover is characterized in that a cover body through hole with internal threads is formed in the center of the nut protecting cover along the axial direction, a protecting cover bolt is arranged in the cover body through hole in a matched mode, and the nut protecting cover is fixedly arranged at the outer end face of the stud through the protecting cover bolt.
5. The heavy-duty heading machine cutting head connection structure as recited in claim 4, wherein: the outer side of the cover body through hole is coaxially provided with a protective cover counter bore, and the protective cover bolt is screwed into the cover body through hole in a matched mode from the bottom of the protective cover counter bore.
6. The heavy-duty heading machine cutting head connection structure according to claim 1 or 4, characterized in that: the outer surface of the nut protective cover is a spherical surface, a spigot is machined on the inner side of the nut protective cover, and the spigot and the counter bore of the cutting head form excessive fit.
7. The heavy-duty heading machine cutting head connection structure as defined in claim 1, wherein: the lubricating grease adopts No. 2 extreme pressure lithium-based lubricating grease commonly used by a development machine.
8. A heading machine, characterized in that: a heavy-duty heading machine cutting head connection as defined in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811516738.8A CN109555530B (en) | 2018-12-12 | 2018-12-12 | Cutting head connecting structure of heavy tunneling machine and tunneling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811516738.8A CN109555530B (en) | 2018-12-12 | 2018-12-12 | Cutting head connecting structure of heavy tunneling machine and tunneling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109555530A CN109555530A (en) | 2019-04-02 |
| CN109555530B true CN109555530B (en) | 2023-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811516738.8A Active CN109555530B (en) | 2018-12-12 | 2018-12-12 | Cutting head connecting structure of heavy tunneling machine and tunneling machine |
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| Country | Link |
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| CN (1) | CN109555530B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206541A (en) * | 2019-06-28 | 2019-09-06 | 三一重型装备有限公司 | Cutting mechanism and development machine |
| CN110374593A (en) * | 2019-08-29 | 2019-10-25 | 三一重型装备有限公司 | Development machine internal spraying water supply system and development machine |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19740078A1 (en) * | 1997-09-12 | 1999-03-18 | Wirth Co Kg Masch Bohr | Drifting method with combined vibrating and regularly working tool |
| JP2001152788A (en) * | 1999-11-26 | 2001-06-05 | Nishimatsu Constr Co Ltd | Excavator |
| CN101289937A (en) * | 2007-12-14 | 2008-10-22 | 三一重型装备有限公司 | Cutting head structure of tunneling machine |
| CN102839973A (en) * | 2012-08-20 | 2012-12-26 | 三一重型装备有限公司 | Cutting head structure used for heading machine and heading machine |
| CN103939108A (en) * | 2014-05-09 | 2014-07-23 | 中国矿业大学 | Cutting part of hard rock tunnel boring machine |
| CN205714185U (en) * | 2016-06-15 | 2016-11-23 | 西安煤矿机械有限公司 | A kind of high-power heavy type boom-type roadheader cutterhead attachment structure |
| CN106150492A (en) * | 2016-08-05 | 2016-11-23 | 辽宁工程技术大学 | Cutting mechanism for heading machine with double cutterheads |
| CN108825255A (en) * | 2018-06-15 | 2018-11-16 | 中国矿业大学 | A kind of combined type cutting units for boom-type roadheader |
| CN209354150U (en) * | 2018-12-12 | 2019-09-06 | 中铁工程装备集团隧道设备制造有限公司 | A kind of mine heavy roadheader cutterhead connection structure and development machine |
-
2018
- 2018-12-12 CN CN201811516738.8A patent/CN109555530B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19740078A1 (en) * | 1997-09-12 | 1999-03-18 | Wirth Co Kg Masch Bohr | Drifting method with combined vibrating and regularly working tool |
| JP2001152788A (en) * | 1999-11-26 | 2001-06-05 | Nishimatsu Constr Co Ltd | Excavator |
| CN101289937A (en) * | 2007-12-14 | 2008-10-22 | 三一重型装备有限公司 | Cutting head structure of tunneling machine |
| CN102839973A (en) * | 2012-08-20 | 2012-12-26 | 三一重型装备有限公司 | Cutting head structure used for heading machine and heading machine |
| CN103939108A (en) * | 2014-05-09 | 2014-07-23 | 中国矿业大学 | Cutting part of hard rock tunnel boring machine |
| CN205714185U (en) * | 2016-06-15 | 2016-11-23 | 西安煤矿机械有限公司 | A kind of high-power heavy type boom-type roadheader cutterhead attachment structure |
| CN106150492A (en) * | 2016-08-05 | 2016-11-23 | 辽宁工程技术大学 | Cutting mechanism for heading machine with double cutterheads |
| CN108825255A (en) * | 2018-06-15 | 2018-11-16 | 中国矿业大学 | A kind of combined type cutting units for boom-type roadheader |
| CN209354150U (en) * | 2018-12-12 | 2019-09-06 | 中铁工程装备集团隧道设备制造有限公司 | A kind of mine heavy roadheader cutterhead connection structure and development machine |
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| Publication number | Publication date |
|---|---|
| CN109555530A (en) | 2019-04-02 |
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