CN114439479A - Milling and digging head for shaft boring machine - Google Patents
Milling and digging head for shaft boring machine Download PDFInfo
- Publication number
- CN114439479A CN114439479A CN202210157690.6A CN202210157690A CN114439479A CN 114439479 A CN114439479 A CN 114439479A CN 202210157690 A CN202210157690 A CN 202210157690A CN 114439479 A CN114439479 A CN 114439479A
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- China
- Prior art keywords
- boring machine
- milling
- shaft boring
- machine according
- fixing part
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- 238000003801 milling Methods 0.000 title claims abstract description 31
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000005299 abrasion Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000005641 tunneling Effects 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000004021 metal welding Methods 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XEBWQGVWTUSTLN-UHFFFAOYSA-M phenylmercury acetate Chemical compound CC(=O)O[Hg]C1=CC=CC=C1 XEBWQGVWTUSTLN-UHFFFAOYSA-M 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000036346 tooth eruption Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D1/00—Sinking shafts
- E21D1/03—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws
- E21D1/06—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws with shaft-boring cutters
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a milling and digging head for a shaft boring machine, which is provided with a cylinder body, a base, a chisel and a flat blade, wherein the cylinder body comprises a body, a first fixing part and a second fixing part, a plurality of detaching parts and accommodating parts are arranged on the outer surface of the body, the plurality of bases are welded on the cylinder body according to a certain rule, and the chisel and the flat blade are arranged in the bases, so that the ground is milled and dug, the service life is longer, the better abrasion characteristic is realized, and the replacement and maintenance are simpler.
Description
Technical Field
The invention belongs to the technical field of heading machines, and particularly relates to a milling and digging head for a vertical shaft heading machine.
Background
The vertical shaft is an important passage for human beings to enter a deep underground space, and the vertical shaft exploitation technology is a key technical guarantee for deep-ground resource exploitation and underground space development in one country. At present, in order to shorten the construction period of a project and meet the requirements of ventilation, material supply and the like, long-distance railway tunnel engineering is generally constructed in a mode of short opening of a long tunnel and multiple branch holes; branch tunnel types are mostly inclined shafts, the calculation is carried out according to the gradient of 10%, more than 5 inclined shaft branch tunnels with the length of about 5km are required to be built for the tunnel with the average buried depth of 500m and the total length of 30km as auxiliary engineering, the engineering quantity is large, and the construction period is long; in order to quickly and reliably perform shaft construction, a sinking shaft tunneling device VSM is developed by the sea Rake, and the product is widely accepted by the market at present. The unique mechanized open caisson equipment has more advantages in the construction of underground water. In general, the apparatus may be used in stable soft formations having compressive strengths of less than 80 megapascals. The sinking type shaft tunneling equipment consists of two main components: shaft excavation equipment and sedimentation equipment. The vertical shaft excavator is hoisted into the starting well structure and is firmly pressed on the well wall by three mechanical arms. On one telescopic arm, a rotatable milling and digging head (cutting head) is arranged, and cutting teeth are arranged on the milling and digging head. The milling and digging head cuts and digs soil at the bottom of the vertical shaft. The milling and digging head has elasticity and can perform up-rotation, down-rotation and rotation actions. Therefore, the excavation of the whole vertical shaft section can be completed, and certain overbreak can be completed. The construction period is greatly shortened, the construction cost is reduced, and the construction method has great significance in guaranteeing safe and quick construction of long-distance deep-buried railway mountain tunnels. However, the current milling and excavating heads are not ideal in terms of service life, and the replacement of chisels and the like is troublesome.
Disclosure of Invention
In order to solve the problems, the invention discloses a milling and excavating head for a shaft boring machine, which has long service life and is easy to maintain and replace.
The milling and digging head for the shaft boring machine is characterized by comprising a cylinder, a base, a chisel and a flat shovel, wherein the cylinder comprises a cylindrical body, a first fixing part and a second fixing part, the first fixing part and the second fixing part are arranged on two axial sides in the body, and the first fixing part and the second fixing part are disc-shaped; the outer side surface of the body is provided with a plurality of mounting seats, each mounting seat comprises a concave accommodating part for fixing the base and a concave dismounting part for assisting in dismounting the base, the accommodating parts are communicated with the dismounting parts, and the base is fixed on the body through the accommodating parts; the chisels and the flat shovels are fixed on the surface of the body through the base, and the chisels and the flat shovels are arranged on the surface of the body in a staggered mode.
The installation seats are spirally arranged on the surface of the body.
The installation seats are arranged on the surface of the body along 4-16 spiral lines, and the spiral lines are arranged along two sides of the split plane in the body.
The base is welded and fixed with the body, and the edges of the first fixing part and the second fixing part are respectively welded and fixed with the body.
A first through hole is formed in the middle of the first fixing portion, and a second through hole is formed in the middle of the second fixing portion.
The first fixing part is provided with a first internal thread hole group; the second fixing portion is provided with a second female screw hole group.
The mouth parts on two sides of the body are arranged in a step shape, and the inner diameters of the mouth parts on two sides are gradually reduced from the inside of the outer line; the first fixing part and the second fixing part are respectively fixed at the minimum inner diameter positions of the opening parts at two sides of the body.
The chisels and the flat shovels are arranged in a staggered mode along a spiral line.
The projection distance between the vertex of the chisel blade on the same spiral line and the midpoint of the upper end of the adjacent flat blade is not less than 10 mm.
The projection distance between the top point of the chisel blade and the middle point of the upper end of the adjacent flat blade on the same spiral line is 30mm to 100 mm.
According to the milling and digging head for the vertical shaft tunneling machine, the bases are welded on the barrel body according to a certain rule, and the chisels and the flat shovels are arranged in the bases, so that the ground is milled and dug, the service life is longer, the better abrasion characteristic is realized, and the replacement and maintenance are simpler.
Drawings
FIG. 1 is a schematic structural view of a milling and excavating head of the present invention;
FIG. 2 is a side view of the milling head of the present invention;
FIG. 3 is a schematic structural view of the body of the present invention (without the base, chisel and blade);
fig. 4 is a full sectional view a-a of fig. 3.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 3, the milling and excavating head for the shaft boring machine comprises a cylinder body 1, a base 2, a chisel 3 and a flat blade 4, wherein the cylinder body comprises a cylindrical body 100, a first fixing part 8 and a second fixing part 9 which are arranged on two axial sides in the body, a plurality of sunken detaching parts 6 and accommodating parts 7 are arranged on the outer surface 101 of the body 100, and the accommodating parts 7 and 6 are communicated. The plurality of detaching parts 6 and accommodating parts 7 provided on the outer surface 101 of the body 100 are spirally arranged according to a certain rule. The corresponding number of bases 2 are placed in the accommodating part 7, and the bases 2 are welded and fixed in the accommodating part 7. A corresponding number of chisels 3 and blades 4 are mounted in the base 2. The base 2 is arranged spirally according to a certain rule. This regular helical arrangement is typically provided as a 4 to 16 helix arrangement, with chisels and blades staggered along the helix and the helix arranged on both sides of the bisecting plane M. The base 2 is fixedly connected with the cylinder 1 in a metal welding mode. The distance between the top point 30 of the chisel blade 3 and the middle point 40 of the upper end of the flat shovel 4 on the same spiral line and the projection of the two on the ground is L1, and the size range of L1 is 30mm to 100 mm. The apex 30 of the chisel 3 and the working portion 41 of the blade 4 are formed of wear resistant alloy elements.
In fig. 1, the maximum working width L of the milling head for a shaft boring machine is shown, i.e. the distance from the apex 30 of the leftmost chisel 3 to the apex 30 of the rightmost chisel 3, which has a size in the range of 500mm to 2000 mm. In fig. 2, the maximum working diameter X of the milling head for a shaft boring machine is shown, i.e. the diameter formed by the apex 30 of the chisel 3 mounted in the base 2, which diameter is in the range of 800mm to 1800mm, with the base 2 being arranged around the surface of the cylinder 1.
As can be seen in fig. 3 and 4, the body 100 is formed in a cylindrical hollow cylinder shape, and the first fixing portion 8 and the second fixing portion 9 are provided inside thereof. A first female screw hole group 10 is provided in the first fixing portion 8; the second fixing portion 9 is provided with a second female screw hole group 11. The first fixing portion 8 and the second fixing portion 9 are fixedly connected to the body 100 by metal welding. The first fixing part 8 and the second fixing part 9 are circular disc-shaped, the circle centers of the circle centers are respectively provided with a through hole 12 and a through hole 5, bolts penetrate through the first internal thread hole group 10 and the second internal thread hole group 11 during installation, the milling and digging head is installed and fixed on a corresponding bearing support of the shaft boring machine on two sides, and free rotation of the milling and digging head can be achieved. Barrel 1 has a length L2 and a size in the range of 400mm to 1900 mm. The cylinder body 1 has the maximum diameter phi X2, and the size range is 500mm to 1500mm in the middle of the cylinder body 1; barrel 1 has a minimum diameter phix 1, on both sides of barrel 1, in the size range 400mm to 1400 mm.
In the cross-section of the cylinder 1, which can be seen in fig. 4, the cylinder 1 has a shape with a small diameter at both ends and a large diameter at the middle, the surface 101 of which is constituted by a curve with a radius R and a size ranging between 3000mm and 9000 mm.
As shown in fig. 1 and 2, the top 30 of the chisel 3 and the working part 41 of the blade 4 are in direct contact with the ground material cut by the rapidly rotating cutting head, and the spiral base 2, the chisel 3 and the blade 4 which are arranged according to a certain rule have a guiding function, so that the fine ground material cut by the cutting head can be uniformly collected to the center, and the ground material can be conveniently and intensively conveyed to the outside of a working area for storage. When the apex 30 of the chisel 3 and the working portion 41 of the blade 4 become worn to the point where continued use is not possible, the chisel 3 and blade 4 can be conveniently removed, replaced with a new chisel 3 and blade 4 and reattached.
Therefore, the milling and excavating head for the shaft boring machine is used for milling and excavating the ground by welding the bases 2 on the barrel 1 according to a certain rule and installing the chisel 3 and the flat blade 4 in the bases 2, so that the longer service life, the better wear characteristic and the simpler replacement and maintenance can be realized.
It should be noted that the drawings of the present embodiment are in a very simplified form and all employ non-precise ratios, which are merely used for convenience and clarity in assisting in describing the embodiments of the present invention.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above-listed detailed description is only a detailed description of possible embodiments of the present application, and they are not intended to limit the scope of the application, and equivalent embodiments or modifications made without departing from the technical spirit of the present application should be included in the scope of the present application.
Claims (10)
1. The milling and digging head for the shaft boring machine is characterized by comprising a cylinder body (1), a base (2), a chisel (3) and a flat shovel (4), wherein the cylinder body (1) comprises a cylindrical body (100), and a first fixing part (8) and a second fixing part (9) which are arranged on two axial sides in the body (100), and the first fixing part (8) and the second fixing part (9) are disc-shaped; the outer side surface of the body (100) is provided with a plurality of mounting seats, each mounting seat comprises a concave accommodating part (7) for fixing the base (2) and a disassembling part (6) for assisting in disassembling the base (2), and the accommodating parts (7) are communicated with the disassembling parts (6); the base (2) is fixed on the body (100) through the accommodating part (7); the chisels (3) and the blades (4) are fixedly arranged on the surface of the body (100) through the base (2), and the chisels (3) and the blades (4) are arranged on the surface of the body (100) in a staggered mode.
2. The milling head for a shaft boring machine according to claim 1, characterized in that a plurality of the mounting seats are arranged in a spiral on the surface of the body (100).
3. The milling head for a shaft boring machine according to claim 2, characterized in that a plurality of said mounting seats are arranged on the surface of the body (100) along 4 to 16 spirals and in that the spirals are arranged along the body (100) on both sides of the bisecting plane (M).
4. The milling head for a shaft boring machine according to claim 1, characterized in that the base is welded to the body (100), and the edges of the first (8) and second (9) fastening portions are welded to the body (100).
5. The milling head for a shaft boring machine according to claim 4, characterized in that the first fastening part (8) is provided with a first through-hole (12) in the middle and the second fastening part (9) is provided with a second through-hole (5) in the middle.
6. The milling head for a shaft boring machine according to claim 5, characterized in that the first fixing part (8) is provided with a first set of internally threaded holes (10); a second female screw hole group (11) is provided in the second fixing portion (9).
7. The milling and excavating head for the shaft boring machine according to claim 4, characterized in that the mouth parts at two sides of the body (100) are arranged in a step shape, and the inner diameters of the mouth parts at two sides are gradually reduced from outside to inside; the first fixing part (8) and the second fixing part (9) are respectively fixed at the positions with the minimum inner diameter of the mouth parts at the two sides of the body (100).
8. A milling and excavating head for a shaft boring machine according to claim 3, characterized in that the chisels (3) and the blades (4) are arranged in a staggered manner along a spiral.
9. The milling head for a shaft boring machine according to claim 8, characterized in that the projected distance between the apex (30) of the chisel (3) and the upper midpoint (40) of the adjacent blade (4) on the same helix is not less than 10 mm.
10. A milling and excavating head for a shaft boring machine according to claim 9, characterized in that the projected distance between the apex (30) of the chisel (3) and the midpoint (40) of the upper end of the adjacent blade (4) on the same helix is 30mm to 100 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210157690.6A CN114439479A (en) | 2022-02-21 | 2022-02-21 | Milling and digging head for shaft boring machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210157690.6A CN114439479A (en) | 2022-02-21 | 2022-02-21 | Milling and digging head for shaft boring machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114439479A true CN114439479A (en) | 2022-05-06 |
Family
ID=81374614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210157690.6A Pending CN114439479A (en) | 2022-02-21 | 2022-02-21 | Milling and digging head for shaft boring machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114439479A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115773116A (en) * | 2023-02-10 | 2023-03-10 | 中国建筑西南勘察设计研究院有限公司 | Circular track type drilling equipment and drilling method |
-
2022
- 2022-02-21 CN CN202210157690.6A patent/CN114439479A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115773116A (en) * | 2023-02-10 | 2023-03-10 | 中国建筑西南勘察设计研究院有限公司 | Circular track type drilling equipment and drilling method |
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