CN110939169A - Milling head of double-wheel stirring drilling machine - Google Patents
Milling head of double-wheel stirring drilling machine Download PDFInfo
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- CN110939169A CN110939169A CN202010010452.3A CN202010010452A CN110939169A CN 110939169 A CN110939169 A CN 110939169A CN 202010010452 A CN202010010452 A CN 202010010452A CN 110939169 A CN110939169 A CN 110939169A
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- 238000003801 milling Methods 0.000 title claims abstract description 57
- 238000003756 stirring Methods 0.000 title abstract description 21
- 238000005553 drilling Methods 0.000 title abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 239000003921 oil Substances 0.000 claims description 18
- 230000009467 reduction Effects 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 9
- 239000000969 carrier Substances 0.000 claims description 7
- 230000001050 lubricating effect Effects 0.000 claims description 7
- 239000004519 grease Substances 0.000 claims description 5
- 239000010687 lubricating oil Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000005461 lubrication Methods 0.000 abstract description 2
- 239000002689 soil Substances 0.000 description 17
- 238000010276 construction Methods 0.000 description 13
- 239000007788 liquid Substances 0.000 description 8
- 239000004568 cement Substances 0.000 description 5
- 239000002002 slurry Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000009545 invasion Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000002173 cutting fluid Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
- E02F5/08—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with digging wheels turning round an axis
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/10—Prefabricated parts, e.g. composite sheet piles made of concrete or reinforced concrete
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- General Details Of Gearings (AREA)
Abstract
A milling head of a double-wheel stirring drilling machine comprises a milling wheel, a driving box, a gear rack, first oil gas holes, second oil gas holes, an air inlet hole, a sun gear, a plurality of planet gears, a fixing ring, an inner fixing ring and an annular cavity, wherein the milling wheel comprises a planet reducing mechanism, the planet gear rack is positioned on the end faces of the left side and the right side of a box body, the first oil gas holes are positioned on the front side and the rear side of the box body, the driving box is positioned on the air inlet hole of the upper end part of the box body, the planet reducing mechanism comprises a central shaft, a bevel gear pair, inner gear rings positioned on the two sides of the; the milling wheels are sleeved on the planet carrier and then arranged on two sides of the driving box; the fixed ring is embedded in the trapezoidal ring groove of the planet wheel carrier through the inner hole ring grooves of the two half circles and then fixedly connected with the inner fixed ring; the inner fixed rings are respectively sleeved on the shaft shoulders at the front ends of the planetary gear frames after being provided with oil seals; the annular cavity is communicated with the transverse through hole of the inner fixing ring and the second oil gas hole. The invention has the characteristics of large output torque of the milling wheel, reliable lubrication and sealing, stable work and the like.
Description
Technical Field
The invention relates to a double-wheel stirring drilling machine for equal-thickness cement soil stirring wall construction, in particular to a milling head of the double-wheel stirring drilling machine.
Background
At present, in the projects of foundation water-stopping curtain walls of buildings, foundation pit supporting, foundation reinforcement of harbor seawalls and reservoir dams, improvement of soft soil foundations and the like, a multi-shaft underground continuous wall construction method (namely an SMW construction method) and an equal-thickness cement soil stirring wall construction method are mainly adopted, a three-shaft or five-shaft stirring drilling machine is adopted in the SMW construction method, and the construction method is low in pile forming efficiency, high in energy consumption and difficult to control verticality. The construction method of the equal-thickness cement-soil mixing wall selects a saw chain type or double-wheel milling type cement-soil deep mixer construction device according to geological conditions, peripheral environmental conditions, wall forming depth, wall thickness, wall body precision and the like, the saw chain type equal-thickness cement-soil mixing wall is suitable for construction of soil layers such as sandy soil, silt soil, cohesive soil and the like, and the double-wheel milling type equal-thickness cement-soil mixing wall is suitable for construction of soil layers such as gravel soil, soft rock and the like. The double-wheel milling cement soil deep layer stirrer has the advantages that the maximum rotating speed of the double-wheel milling power head can reach 35 revolutions per minute, the number of the cutting cutter discs is large, the special cutter head structure ensures that the pile forming time of the whole cutting and stirring process is shortened by about half compared with that of a three-shaft stirring drilling machine, and the construction efficiency is greatly improved; the stirring milling head drills downwards and lifts upwards to move through the guide rod and the guide sleeve in an accurate matching mode, and the perpendicularity of a formed pile is effectively guaranteed. The cutting and stirring mode is labor-saving and energy-saving, and the energy consumption is saved by more than 20% compared with a three-shaft stirring drilling machine.
In the prior art, the power head of the double-wheel milling cement soil deep mixer has more defects, because the power head and the milling head thereof are positioned in an underground groove body and are always in invasion and surrounding of cement paste, cutting fluid, curing fluid and sandy soil, the lubrication and sealing problems are always difficult to solve, the sealing mode of the milling wheel and a mounting shaft thereof generally adopts a mode of combining an O-shaped sealing ring and an oil seal, and the sealing principle is dependent on the extrusion effect of a sealing element. Lubricating grease is forcibly filled into a gap between an O-shaped sealing ring and an oil seal at a rotating position through a high-pressure oil gun in a specified lubricating period of a double-wheel stirring drilling machine, so that when a milling wheel and a cutter head of each moving part cut an underground groove body, the O-shaped sealing ring and the oil seal are greatly influenced due to the fact that slurry containing digging liquid and curing liquid and sand particles contained in a stratum have great damage to the sealing ring, abrasion and breakage are easy to generate, the sealing performance of the O-shaped sealing ring and the oil seal is reduced, the slurry containing the digging liquid and the curing liquid is caused to be poured into a rotating gap of the milling wheel, abrasion of each supporting bearing is increased, equipment failure is caused, and the operation efficiency is reduced. Therefore, a sealing structure and a sealing mode between moving parts in the milling head of the double-wheel stirring drilling machine are needed, and the structural strength and the working reliability are further improved, so that the adaptability of the double-wheel stirring drilling machine is met, and the construction requirements of the ultra-deep equal-thickness cement-soil stirring wall are met.
Disclosure of Invention
The invention aims to provide a double-wheel stirring drilling machine milling head which can effectively improve the lubricating and sealing performance of the milling head according to the defects in the prior art, has the characteristics of large output torque of the milling wheel, stable and reliable operation and the like, ensures the stable operation of equipment, and effectively improves the operating efficiency.
The invention is realized by the following technical scheme:
a two-wheel churning machine milling head comprising:
the milling wheel consists of a wheel body and a plurality of rows of milling heads positioned on the excircle of the wheel body;
the driving box consists of a box body, a planetary reduction mechanism, planetary wheel carriers positioned on the end faces of the left side and the right side of the box body, first oil and gas holes positioned on the front side and the rear side of the box body and an air inlet hole positioned on the upper end part of the box body; the planetary reduction mechanism comprises a central shaft, a bevel gear pair, inner gear rings positioned at two sides of the bevel gear pair, a sun gear and a plurality of planetary gears, wherein the sun gear and the plurality of planetary gears are respectively sleeved at two ends of the central shaft;
the fixing ring consists of two semicircular rings with inner hole ring grooves;
the inner fixing ring comprises a plurality of inner ring grooves and transverse through holes;
and a ring cavity;
the method is characterized in that:
the milling wheels are respectively arranged on the left side and the right side of the box body along the left and right directions of the driving box, and are respectively sleeved on the outer circle of the planet carrier and then fixed with the planet carrier through screws; when the milling heads are arranged on the excircle of the wheel body, the milling heads are arranged in layers at equal intervals along the axial direction of the wheel body and are arranged in a crossed and symmetrical mode along the radial direction of the wheel body;
the planet wheel carrier is in a round cover shape, a plurality of trapezoidal ring grooves are formed in the shaft shoulder position of the front end of the outer circle of the planet wheel carrier, and a plurality of convex shafts which are symmetrically arranged along the radial direction of the inner bottom of the cover are arranged at the inner bottom of the cover; an inner hole step at one end of the planet carrier is provided with a bearing and then supported on the excircle of the left and right inner gear rings;
the fixed ring is embedded in the trapezoidal ring grooves of the left planet wheel carrier and the right planet wheel carrier of the driving box through the inner hole ring grooves of the two half circles and then is fixedly connected with the inner fixed ring respectively; thus, a labyrinth sealing area is formed between the inner hole ring groove and the trapezoid ring groove;
the inner ring grooves of the inner fixing ring are respectively sleeved on the shaft shoulders at the front ends of the outer circles of the left planet wheel carrier and the right planet wheel carrier of the driving box after being provided with oil seals;
two end shaft shoulders of the central shaft are respectively provided with a sun gear which is respectively meshed with a plurality of planetary gears; the planetary gear is sleeved on each convex shaft of the planetary gear carrier and is meshed with the inner gear ring; thus, the left and right planetary gear carriers rotate by taking the central shaft as the center, and are subjected to transmission speed reduction on the bevel gear pair, the sun gear, the planetary gear and the inner gear ring, so that the left and right milling wheels fixedly mounted with the left and right planetary gear carriers realize low-speed rotation and horizontal large-torque output;
the annular cavity is an annular space formed after the fixed ring, the inner fixed ring and the planet carrier are fixedly arranged, and the annular cavity is communicated with the transverse through hole of the inner fixed ring and the second oil gas hole;
the first oil-gas hole is respectively arranged inside the front side plate and the rear side plate of the box body along the vertical direction of the driving box and is communicated with the second oil-gas hole in the side plates; an oil-gas pipeline from an external gas injection and oil injection system is fixedly arranged at an orifice of the end part of the side plate of the first oil-gas hole; and the end part of the air inlet is fixedly provided with an air pipeline from an external air injection system.
The lubricating oil and the lubricating grease injected into the first oil-gas hole can be uniformly stirred according to the ratio of 1: 3.
The pressure value of the high-pressure air injected into the first oil-gas hole and the air inlet hole is less than or equal to 1.5 MPa.
The invention can also be characterized in that the fit tolerance of the inner hole ring grooves of the two half circles and the inner diameters of the groove bottoms and the outer diameters of the groove tops of the trapezoidal ring grooves of the planet wheel carrier is F8/h 7.
The number of the plurality of planet wheels meshed with the sun wheel and the inner gear ring in the planetary reduction mechanism can be 3, 4, 5 or 7, and the number of the convex shafts of the planet wheel carrier used for mounting the planet wheels is respectively 3, 4, 5 or 7.
Drawings
FIG. 1 is a block diagram of a milling head of a two-wheel churning machine according to the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a sectional view taken along line A-A of FIG. 1;
FIG. 4 is a sectional view taken along line B-B of FIG. 3;
fig. 5 is a partially enlarged view of portion C of fig. 4.
Detailed Description
The structure of the milling head of the double-wheel stirring drilling machine is further explained by combining the attached drawings.
As shown in fig. 1-5, a milling head for a two-wheel agitator drill includes: the milling wheel 1 consists of a wheel body 10 and a plurality of rows of milling heads 11 positioned on the excircle of the wheel body; the driving box 2 consists of a box body 20, a planetary reduction mechanism 22, a planetary carrier 21 positioned on the end faces of the left side and the right side of the box body, first oil and gas holes 201 positioned on the front side and the rear side of the box body, and an air inlet hole 203 positioned on the upper end part of the box body, wherein the planetary reduction mechanism 22 comprises a central shaft 220, a bevel gear pair 221, an inner gear ring 222 positioned on the two sides of the bevel gear pair, a sun gear 223 and a plurality of planetary gears 224 which are respectively sleeved at the two ends of the central shaft; the fixed ring 8 consists of two half circles 81 with inner hole ring grooves 811; the inner fixing ring 9 comprises a plurality of inner ring grooves 91 and transverse through holes 92; and an annular chamber 7; wherein:
the milling wheels 1 are respectively arranged at the left side and the right side of the box body 20 along the left and the right directions of the driving box 2, and are respectively sleeved on the excircle of the planet carrier 21 and then fixed with the planet carrier through screws; when the milling heads 11 are arranged on the outer circle of the wheel body 10, the milling heads are arranged in layers at equal intervals along the axial direction of the wheel body and are arranged in a crossed and symmetrical mode along the radial direction of the wheel body.
The planet wheel carrier 21 is in a round cover shape, a plurality of trapezoidal ring grooves 211 are formed in the shaft shoulder position of the front end of the outer circle of the planet wheel carrier, and a plurality of convex shafts 212 symmetrically arranged along the radial direction of the inner bottom of the cover are arranged; the inner hole step at one end of the planet carrier 21 is mounted with a bearing and then supported on the excircle of the left and right ring gears 222.
The fixed ring 8 is embedded in the trapezoidal ring grooves 211 of the left planet carrier 21 and the right planet carrier 21 of the driving box 2 through the inner hole ring grooves 811 of the two half circles 81 and then is fixedly connected with the inner fixed ring 9 respectively; thus, a labyrinth seal area is formed between inner bore ring groove 811 and trapezoidal ring groove 211; the gap between the two is filled with lubricating oil and grease, as well as air under a certain pressure. The fit tolerance between the inner hole ring grooves 811 of the two half circles 81 and the inner diameter of the groove bottom and the outer diameter of the groove top of the trapezoidal ring groove 211 of the planet wheel carrier 21 is F8/h 7. So as to match the labyrinth seal between the inner hole ring groove and the trapezoid ring groove and ensure that the annular cavity 7 is higher than the external pressure. Therefore, the invasion of slurry containing digging liquid and curing liquid and sand particles in the stratum can be effectively resisted, the sealing performance of the milling head is improved, and the service life of the equipment is prolonged.
The inner ring groove 91 of the inner fixed ring 9 is respectively sleeved on the front end shaft shoulders of the outer circles of the left planet carrier 21 and the right planet carrier 21 of the driving box 2 after being provided with the oil seals 66.
The two end shoulders of the central shaft 220 are respectively provided with a sun gear 223 which is respectively meshed with a plurality of planet gears 224; the planetary gear 224 is sleeved on each convex shaft 212 of the planetary carrier 21 and is meshed with the inner gear ring 222; thus, the left and right planetary carriers 21 rotate around the central shaft 220, and are decelerated in the transmission of the bevel gear pair 221, the sun gear 223, the planetary gear 224 and the inner gear ring 222, so that the left and right milling wheels 1 fixedly mounted with the left and right milling carriers realize low-speed rotation and horizontal large-torque output; the number of the planetary gear 224 engaged with the sun gear 223 and the ring gear 222 in the planetary reduction mechanism 22 may be 3, 4, 5, or 7, and the number of the protruding shafts 212 of the planetary carrier 21 for mounting the planetary gear is 3, 4, 5, or 7. Further satisfy low-speed rotation and the output of the big moment of torsion of level, increase the load capacity of milling head to improve the factor of safety of equipment.
The annular cavity 7 is an annular space formed after the fixed mounting of the fixed ring 8, the inner fixed ring 9 and the planet carrier 21, and the annular cavity is communicated with the transverse through hole 92 of the inner fixed ring 9 and the second oil-gas hole 202; the first oil and gas holes 201 are respectively arranged in the front and rear side plates 205 of the box body 20 along the vertical direction of the driving box 2, and are communicated with the second oil and gas holes 202 in the side plates 205; an oil-gas pipeline from an external gas injection and oil injection system is fixedly arranged on an orifice of the end part of the side plate 205 of the first oil-gas hole 201; the end of the air inlet 203 is fixedly provided with an air pipeline from an external air injection system. The lubricating oil and the lubricating grease injected into the first oil-gas hole 201 are uniformly stirred according to the ratio of 1: 3. The pressure value of the high-pressure air injected into the first oil-gas hole 201 and the air inlet 203 is less than or equal to 1.5MPa, so that when the 80-meter-deep equal-thickness continuous wall is milled and stirred, the air pressure injected into the milling head driving box is higher than the external water pressure, and the situation that the air pressure invades into the driving box body to cause faults is prevented.
The milling head of the double-wheel stirring drilling machine effectively improves the lubricating and sealing performance of the milling head, is suitable for milling and stirring construction in a slurry environment containing digging liquid and curing liquid and a stratum containing sandy particles, has the characteristics of large output torque of the milling wheel and a cutter disc thereof, stable and reliable operation and the like, and effectively improves the operation efficiency.
Claims (5)
1. A two-wheel churning machine milling head comprising:
the milling wheel (1) consists of a wheel body (10) and a plurality of rows of milling heads (11) positioned on the excircle of the wheel body;
the driving box (2) consists of a box body (20), a planetary reduction mechanism (22), a planetary gear carrier (21) positioned on the end faces of the left side and the right side of the box body, first oil and gas holes (201) positioned on the front side and the rear side of the box body and an air inlet hole (203) positioned on the upper end part of the box body; the planetary speed reducing mechanism (22) comprises a central shaft (220), a bevel gear pair (221), inner gear rings (222) positioned at two sides of the bevel gear pair, a sun gear (223) and a plurality of planetary gears (224), wherein the sun gear (223) and the plurality of planetary gears are respectively sleeved at two ends of the central shaft;
the fixing ring (8) consists of two semicircular rings (81) with inner hole ring grooves (811);
the inner fixing ring (9) comprises a plurality of inner ring grooves (91) and a transverse through hole (92);
and an annular chamber (7);
the method is characterized in that:
the milling wheels (1) are respectively arranged at the left side and the right side of the box body (20) along the left-right direction of the driving box (2), and are respectively sleeved on the outer circle of the planet carrier (21) and then fixed with the planet carrier through screws; when the multiple rows of milling heads (11) are arranged on the outer circle of the wheel body (10), the milling heads are arranged in layers at equal intervals along the axial direction of the wheel body and are arranged in a crossed and symmetrical mode in the radial direction of the wheel body;
the planet wheel carrier (21) is in a round cover shape, a plurality of trapezoidal ring grooves (211) are formed in the shaft shoulder position of the front end of the outer circle of the planet wheel carrier, and a plurality of protruding shafts (212) which are symmetrically arranged along the radial direction of the inner bottom of the cover are arranged at the inner bottom of the cover; an inner hole step at one end of the planet carrier (21) is provided with a bearing and then supported on the excircle of the left and right inner gear rings (222);
the fixed ring (8) is embedded in the trapezoidal ring grooves (211) of the left planet wheel carrier (21) and the right planet wheel carrier (21) of the driving box (2) through the inner hole ring grooves (811) of the two half circles (81) and then is fixedly connected with the inner fixed ring (9) respectively; thus, a labyrinth sealing area is formed between the inner hole ring groove (811) and the trapezoid ring groove (211);
an inner annular groove (91) of the inner fixing ring (9) is respectively sleeved on shaft shoulders at the front ends of the outer circles of a left planet carrier (21) and a right planet carrier (21) of the driving box (2) after being provided with an oil seal (66);
two end shaft shoulders of the central shaft (220) are respectively provided with a sun wheel (223) which is respectively meshed with a plurality of planetary gears (224); the planetary gears (224) are sleeved on the convex shafts (212) of the planetary gear carrier (21) and are meshed with the inner gear ring (222); thus, the left and right planetary gear carriers (21) rotate by taking the central shaft (220) as the center, and are subjected to transmission speed reduction on the bevel gear pair (221), the sun gear (223), the planetary gear (224) and the inner gear ring (222), so that the left and right milling wheels (1) fixedly mounted with the left and right planetary gear carriers realize low-speed rotation and horizontal large-torque output;
the annular cavity (7) is an annular space formed after a fixed fixing ring (8), an inner fixing ring (9) and a planet wheel carrier (21) are fixedly installed, and the annular groove is communicated with a transverse through hole (92) of the inner fixing ring (9) and a second oil gas hole (202);
the first oil-gas hole (201) is respectively arranged in the front side plate (205) and the rear side plate (205) of the box body (20) along the vertical direction of the driving box (2), and is communicated with the second oil-gas hole (202) in the side plates (205); an oil-gas pipeline from an external gas injection and oil injection system is fixedly arranged on an orifice of the end part of the side plate (205) of the first oil-gas hole (201); the end of the air inlet hole (203) is fixedly provided with an air pipeline from an external air injection system.
2. The milling head of a two-wheel mixer-drill according to claim 1, wherein the lubricating oil and the lubricating grease injected into the first oil-gas hole (201) are uniformly mixed in a ratio of 1: 3.
3. The milling head of a two-wheel mixer-drill according to claim 1, characterized in that the pressure value of the high-pressure air injected into the first oil-gas hole (201) and the air inlet hole (203) is less than or equal to 1.5 MPa.
4. The milling head of a double-wheel churning machine according to claim 1, wherein the fit tolerance of the inner hole ring groove (811) of the two half circles (81) and the inner diameter of the groove bottom and the outer diameter of the groove top of the trapezoidal ring groove (211) of the planet wheel carrier (21) is F8/h 7.
5. The milling head of a double-wheel mixing drill according to claim 1, characterized in that the number of the planetary gears (224) engaged with the sun gear (223) and the inner gear ring (222) in the planetary reduction mechanism (22) can be 3, 4, 5 or 7, and the number of the convex shafts (212) of the planetary gear carrier (21) for mounting the planetary gears is 3, 4, 5 or 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010010452.3A CN110939169A (en) | 2020-01-06 | 2020-01-06 | Milling head of double-wheel stirring drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010010452.3A CN110939169A (en) | 2020-01-06 | 2020-01-06 | Milling head of double-wheel stirring drilling machine |
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| Publication Number | Publication Date |
|---|---|
| CN110939169A true CN110939169A (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010010452.3A Pending CN110939169A (en) | 2020-01-06 | 2020-01-06 | Milling head of double-wheel stirring drilling machine |
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| Country | Link |
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| CN (1) | CN110939169A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU1359797A (en) * | 1996-01-19 | 1997-08-11 | Gary Donald Walker | Thread delivery means |
| CN203559444U (en) * | 2013-10-17 | 2014-04-23 | 上海工程机械厂有限公司 | Slot milling machine front-end cutting box |
| CN212078062U (en) * | 2020-01-06 | 2020-12-04 | 上海工程机械厂有限公司 | Milling head of double-wheel stirring drilling machine |
-
2020
- 2020-01-06 CN CN202010010452.3A patent/CN110939169A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU1359797A (en) * | 1996-01-19 | 1997-08-11 | Gary Donald Walker | Thread delivery means |
| CN203559444U (en) * | 2013-10-17 | 2014-04-23 | 上海工程机械厂有限公司 | Slot milling machine front-end cutting box |
| CN212078062U (en) * | 2020-01-06 | 2020-12-04 | 上海工程机械厂有限公司 | Milling head of double-wheel stirring drilling machine |
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