AU2019320140A1 - Cutting apparatus of tunneling machine, and tunneling machine - Google Patents
Cutting apparatus of tunneling machine, and tunneling machine Download PDFInfo
- Publication number
- AU2019320140A1 AU2019320140A1 AU2019320140A AU2019320140A AU2019320140A1 AU 2019320140 A1 AU2019320140 A1 AU 2019320140A1 AU 2019320140 A AU2019320140 A AU 2019320140A AU 2019320140 A AU2019320140 A AU 2019320140A AU 2019320140 A1 AU2019320140 A1 AU 2019320140A1
- Authority
- AU
- Australia
- Prior art keywords
- positioning
- component
- tunneling machine
- fixing sleeve
- cutting apparatus
- 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.)
- Granted
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 62
- 230000005641 tunneling Effects 0.000 title claims abstract description 38
- 239000011148 porous material Substances 0.000 claims abstract description 41
- 238000010586 diagram Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/16—Machines slitting solely by one or more rotating saws, cutting discs, or wheels
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/16—Machines slitting solely by one or more rotating saws, cutting discs, or wheels
- E21C25/18—Saws; Discs; Wheels
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/02—Locking equipment for slewable parts
-
- 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)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Details Of Cutting Devices (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Surgical Instruments (AREA)
- Road Repair (AREA)
Abstract
A cutting apparatus of a tunneling machine, comprising: a shaft (1); a cutting component (2) that is provided with a pore channel (3) extending towards the shaft (1); a threaded fastening member (4) that runs through the pore channel (3) and is connected with the shaft (1) so as to connect the cutting component (2) and the shaft (1) together; a fixing sleeve (5) that is provided in the pore channel (3) and sleeved between the threaded fastening member (4) and the cutting component (2), wherein the fixing sleeve (5) and the threaded fastening member (4) are fixed relative to each other; and a positioning part used for limiting the rotation of the fixing sleeve (5) within the pore channel (3), wherein the positioning part comprises multiple positioning teeth (6) circumferentially arranged along the threaded fastening member (4) and a positioning component (7) used for limiting the circumferential rotation of the positioning teeth (6) around the threaded fastening member (4), and one of the positioning tooth (6) and the positioning component (7) is provided on the fixing sleeve (5), and the other one is provided on the cutting component (2). In addition, also disclosed is a tunneling machine comprising the cutting apparatus.
Description
[0001] The present invention relates to the field of construction machinery, and in particular to
a tunneling machine cutting apparatus and a tunneling machine.
[0002] FIG. 1 shows a structural schematic diagram of a tunneling machine cutting apparatus
in the prior art. As shown in FIG. 1, the tunneling machine cutting apparatus in the prior art
includes the rotating shaft ' and the cutting head 2' sleeved at the end portion of the rotating
shaft 1. The cutting head 2' is provided with the pore channel 3' extending toward the rotating
shaft 1'. The bolt 4' is connected to the rotating shaft ' through the pore channel 3' to connect
the cutting head 2' and the rotating shaft 1'. During the cutting operation of the cutting apparatus,
the bolt connecting the rotating shaft ' and the cutting head 2' is easy to loosen due to a large
impact, which affects the normal cutting operation.
[0003] The present invention aims to provide a tunneling machine cutting apparatus and a
tunneling machine to solve the problem that the threaded fastener in the prior art is easy to
loosen.
[0004] According to one aspect of an embodiment of the present invention, the present
invention provides a tunneling machine cutting apparatus, including:
[0005] a shaft;
[0006] a cutting component, provided with a pore channel extending toward the shaft;
[0007] a threaded fastener, connected to the shaft through the pore channel to connect the cutting component and the shaft;
[0008] a fixing sleeve, provided in the pore channel and sleeved between the threaded fastener and the cutting component, wherein the fixing sleeve and the threaded fastener are fixed relative to each other; and
[0009] a positioning part, configured for limiting a rotation of the fixing sleeve in the pore channel, wherein the positioning part includes a plurality of positioning teeth arranged along the circumference of the threaded fastener and a positioning component configured for limiting a circumferential rotation of the positioning teeth around the threaded fastener, one of the positioning tooth and the positioning component is provided on the fixing sleeve, and the other one is provided on the cutting component.
[0010] Optionally, the positioning component is movable relative to the positioning teeth to switch between a first position that limits the rotation of the positioning teeth and a second position that allows the rotation of the positioning teeth.
[0011] Optionally, the tunneling machine cutting apparatus further includes an elastic component configured for pushing and pressing the positioning component toward the first position.
[0012] Optionally, the positioning tooth include:
[0013] a first side, abutting against the positioning component to limit a rotation of thefixing sleeve in a first direction; and
[0014] a second side, facing away from the first side and configured for pushing and pressing the fixing sleeve toward the second position when the fixing sleeve rotates in a second direction, wherein the second direction is opposite to the first direction.
[0015] Optionally,
[0016] the first side is inclined downstream of the first direction in a direction away from the threaded fastener; and
[0017] the second side is inclined downstream of the first direction in the direction away from the threaded fastener.
[0018] Optionally, the shape of the positioning component is adapted to the shape of a groove between two adjacent positioning teeth.
[0019] Optionally, at least two positioning components are provided. The distance between two adjacent positioning teeth is L1 , the distance between two adjacent positioning components
is L 2 , L 1 ~n L 2, and L 2*n L 1 , where n is a natural number.
[0020] Optionally, the number of the positioning components is N, L 2>L, and Li/ N.
[0021] Optionally, the tunneling machine cutting apparatus further includes a limiting component configured for limiting the fixing sleeve in the pore channel.
[0022] According to another aspect of the present invention, a tunneling machine is further provided, including the tunneling machine cutting apparatus described above.
[0023] By means of the technical solution of the present invention, the fixing sleeve is capable of limiting the rotation of the threaded fastener, thereby overcoming the problem that the threaded fastener is easily loosened.
[0024] Other features and advantages of the present invention will become apparent through the detailed description of exemplary embodiments of the present invention with reference to the drawings.
[0025] In order to more clearly illustrate embodiments of the present invention or technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art are briefly introduced below. Obviously, the drawings in the following description are merely some embodiments of the present invention, based on these drawings, those of ordinary skill in the art may obtain other drawings without creative efforts.
[0026] FIG. 1 shows a schematic diagram of the structure of a tunneling machine cutting apparatus in the prior art;
[0027] FIG. 2 shows a schematic diagram of the structure of a tunneling machine cutting apparatus according to an embodiment of the present invention;
[0028] FIG. 3 shows a side view of the structure of FIG. 2;
[0029] FIG. 4 shows an enlarged view of the portion A encircled in FIG. 2;
[0030] FIG. 5 shows a side view of the structure of FIG. 4;
[0031] FIG. 6 shows a schematic diagram of the internal structure of FIG. 4;
[0032] FIG. 7 shows a schematic diagram of the structure of a cutting component of the tunneling machine cutting apparatus according to the embodiment of the present invention;
[0033] FIG. 8 shows a side view of the structure of FIG. 7;
[0034] FIG. 9 shows a schematic diagram of the structure of a fixing sleeve of the tunneling machine cutting apparatus according to the embodiment of the present invention; and
[0035] FIG. 10 shows a side view of the structure of FIG. 9.
[0036] In the figures:
[0037] 1, shaft; 2, cutting component; 3, pore channel; 4, threaded fastener; 4a, nut; 4b, threaded rod; 5, fixing sleeve; 6, positioning tooth; 6a, first side; 6b, second side; 7, positioning component; 8, elastic component; 9, elastic retaining ring; 10, limiting component; 11, receiving cavity.
[0038] Hereinafter, the technical solution in the embodiments of the present invention will be
clearly and completely described in conjunction with the drawings in the embodiments of the
present invention. Obviously, the described embodiments are only part of the embodiments of
the present invention, rather than all the embodiments. The following description of at least one
exemplary embodiment is merely illustrative and is in no way intended to limit the present
invention and its application or use. Based on the embodiments of the present invention, all
other embodiments obtained by those of ordinary skill in the art without creative efforts shall
fall within the scope of protection of the present invention.
[0039] FIG. 2 shows a schematic diagram of the structure of a tunneling machine cutting
apparatus according to the present embodiment. FIG. 3 shows a side view of the structure of
FIG. 2. FIG. 4 shows an enlarged view of the portion A encircled in FIG. 2. FIG. 5 shows a side
view of the structure of FIG. 5.
[0040] As shown in FIGS. 1 to 5, the tunneling machine cutting apparatus in the present
embodiment includes the shaft 1, the cutting component 2 provided with the pore channel 3
extending toward the shaft 1, the threaded fastener 4 connected to the shaft 1 through the pore
channel 3, the fixing sleeve 5 provided in the pore channel 3 and sleeved between the threaded
fastener 4 and the cutting component 2, and the positioning part configured for limiting the
rotation of the fixing sleeve 5 in the pore channel 3. In the present embodiment, the threaded
fastener 4 is connected to the end face of the shaft 1. The pore channel 3 and the shaft 1 extend
in the same direction.
[0041] The fixing sleeve 5 is fixed relative to threaded fastener 4, and the positioning part
limits the rotation of fixing sleeve 5 in the pore channel 3 to limit the rotation of threaded
fastener 4, which solves the problem that the threaded fastener in the prior art is easily loosened.
[0042] The tunneling machine cutting apparatus further includes the limiting component 10
configured for limiting the fixing sleeve 5 in the pore channel 3 and the elastic retaining ring
provided at one side of the limiting component 10 facing away from the fixing sleeve 5.
[0043] The threaded fastener 4 includes the threaded rod 4b and the nut 4a provided atone end of the threaded rod 4b. The pore channel 3 includes a first pore channel adjacent to the shaft 1 and a second pore channel connected to the first pore channel. The inner diameter of the first pore channel is smaller than that of the second pore channel. The threaded rod 4b is connected to the shaft 1 through the first pore channel. The nut 4a is located in the second pore channel. The fixing sleeve 5 is provided in the second pore channel and is sleeved between the nut 4a and the cutting component 2.
[0044] The shape of the inner cavity of the fixing sleeve 5 is adapted to the shape of the nut 4a, and the fixing sleeve 5 is sleeved on the nut 4a to fix the fixing sleeve 5 to the nut 4a. Optionally, both the cross-sectional shape of the nut 4a and the cross-sectional shape of the inner cavity of the fixing sleeve 5 are polygonal so that the fixing sleeve 5 and the nut 4a are fixed relative to each other. Certainly, the fixing sleeve 5 and the nut 4a may have other non-circular shapes.
[0045] Referring to FIGS. 6, 9 and 10, the fixing sleeve 5 is provided with a plurality of positioning teeth 6 arranged along the circumference of the threaded fastener 4. The cutting component 2 is provided with the positioning component 7 configured for limiting the circumferential rotation of the positioning teeth 6 around the threaded fastener 4. The shape of the positioning component 7 is adapted to the groove between two adjacent positioning teeth 6. The positioning component 7 located between the two adjacent positioning teeth 6 limits the rotation of the positioning teeth 6 around the threaded fastener 4 to limit the rotation of the threaded fastener 4 in the pore channel 3, thereby preventing the threaded fastener 4 from loosening.
[0046] Certainly, it is also feasible to arrange the positioning teeth 6 on the cutting component 2 and arrange the positioning component 7 on the fixing sleeve 5.
[0047] The positioning component 7 is movable along the radial direction of the threaded fastener 4 to switch between the first position that limits the rotation of the positioning teeth 6 and the second position that allows the rotation of the positioning teeth 6. When the threaded fastener 4 needs to be removed, the positioning component 7 is moved in a direction away from the positioning teeth 6 to the position that allows the rotation of the fixing sleeve 5, so that the threaded fastener 7 can be removed from the cutting component 2 and the shaft 1 to facilitate separating the cutting component 2 from the shaft 1.
[0048] The tunneling machine cutting apparatus further includes the elastic component 8
configured for pushing and pressing the positioning component 7 toward the first position.
[0049] Referring to FIGS. 7 and 8, the cutting component 2 is provided with the receiving
cavity 11 communicating with the pore channel 3. The receiving cavity 11 extends from the
outside of the cutting component 2 to the pore channel 3 to facilitate installing the positioning
component 7 into the receiving cavity 11 from the outside of the cutting component 2.
[0050] The cross-section of at least one section of the receiving cavity 11 close to the pore
channel 3 is tapered along a direction close to the pore channel 3 to limit the distance that the
positioning component 7 moves toward the inside of the pore channel 3.
[0051] The positioning component 11 is movably disposed in the receiving cavity 11. The
positioning component 11 can extend out of the receiving cavity 11 and engage with the
positioning teeth 6 to limit the rotation of the positioning teeth 6. The positioning component 11
can be retracted into the receiving cavity 11 to allow the fixing sleeve 5 and the threaded
fastener 4 to rotate in the pore channel 3. The position at which the positioning component 7 is
engaged with the positioning tooth 6 is the first position described above, while the position at
which the positioning component 7 retracts into the receiving cavity 11 is the second position
described above.
[0052] In the present embodiment, the positioning part can only limit the rotation of the fixing
sleeve 5 along the first direction, and the fixing sleeve 5 can rotate in the pore channel 3 along
the second direction opposite to the first direction. The first direction is a direction in which the
threaded fastener 4 is loosened, while the second direction is a direction in which the threaded
fastener 4 is tightened.
[0053] Referring to FIG. 6, the positioning tooth 6 includes the first side 6a abutting against the positioning component 7. The first side 6a abuts against the positioning component 7 to limit the rotation of the fixing sleeve 5 and the threaded fastener 4 along thefirst direction.
[0054] The positioning tooth 6 further includes the second side 6b facing away from the first
side 6a. The second side 6b is configured for pushing and pressing the positioning component 7
toward the second position against the elastic force of the elastic component 8 when thefixing
sleeve 5 rotates along the second direction.
[0055] The first side 6a is inclined downstream of the first direction along a direction away
from the threaded fastener 4. The second side 6b is inclined downstream of the first direction
along the direction away from the threaded fastener 4.
[0056] Optionally, the end face of the nut 4a is provided with a connection structure fitted
with a tool that rotates the threaded fastener 4. Optionally, the connection structure includes a
polygonal hole formed on the end face of the nut 4a.
[0057] When the threaded fastener 4 is rotated along the first direction using the tool, the
positioning component 7 abuts against the first side 6a of the positioning tooth, and neither the
fixing sleeve 5 nor the threaded fastener 4 can be rotated.
[0058] When the threaded fastener 4 is rotated along the second direction using the tool, the
fixing sleeve 5 is rotated along the second direction with threaded fastener 4, and the second
side 6b of the positioning tooth 6 pushes and presses the positioning component 7 toward the
second position, so that the threaded fastener 4 can rotate along the second direction.
[0059] In the present embodiment, at least two positioning components 7 are provided, the
distance between two adjacent positioning teeth 6 is L, the distance between two adjacent
positioning components 7 is L 2 , Li~n L 2, and L 2 *n L 1 , where n is a natural number. Therefore,
in the two adjacent positioning components 7, the distance that the first positioning component
7 engaged with the positioning tooth 6 rotates relative to the second positioning component 7
engaged with the positioning tooth can be less than the distance between the two adjacent
positioning teeth 6, so that the distance between two adjacent positioning positions of the threaded fastener 4 is smaller.
[0060] The number of the positioning components 7 is N, L2>L, and 1L /L 2-Li N. The
engagement relationship between the positioning component 7 and the positioning tooth 6 forms a structure similar to a vernier caliper so that the distance between the two adjacent positioning positions of the threaded fastener 4 is smaller.
[0061] According to another aspect of the present invention, the present embodiment further provides a tunneling machine, including the tunneling machine cutting apparatus described above.
[0062] The above is merely an exemplary embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements and the like made within the spirit and principles of the present invention shall fall within the scope of protection of the present invention.
Claims (10)
1. A tunneling machine cutting apparatus, comprising:
a shaft (1);
a cutting component (2), provided with a pore channel (3) extending toward the shaft (1);
a threaded fastener (4), connected to the shaft (1) through the pore channel (3) to connect
the cutting component (2) and the shaft (1);
a fixing sleeve (5), provided in the pore channel (3) and sleeved between the threaded
fastener (4) and the cutting component (2), wherein the fixing sleeve (2) and the threaded
fastener (4) are fixed relative to each other; and
a positioning part, configured for limiting a rotation of the fixing sleeve (5) in the pore
channel (3), wherein the positioning part comprises a plurality of positioning teeth (6) arranged
along a circumference of the threaded fastener (4) and a positioning component (7) configured
for limiting a circumferential rotation of the positioning teeth (6) around the threaded fastener
(4), one of the positioning tooth (6) and the positioning component (7) is provided on fixing
sleeve (5), and the other one is provided on the cutting component (2).
2. The tunneling machine cutting apparatus according to claim 1, characterized in that the
positioning component (7) is movable relative to the positioning teeth (6) to switch between a
first position that limits the rotation of the positioning teeth (6) and a second position that
allows the rotation of the positioning teeth (6).
3. The tunneling machine cutting apparatus according to claim 2, further comprising an
elastic component (8) configured for pushing and pressing the positioning component (7) toward the first position.
4. The tunneling machine cutting apparatus according to claim 2, characterized in that the
positioning tooth (6) comprises:
a first side (6a), abutting against the positioning component (7) to limit the rotation of the
fixing sleeve (5) along a first direction; and
a second side (6b), facing away from the first side (6a) and configured for pushing and
pressing the positioning component (7) toward the second position when the fixing sleeve (5)
rotates along a second direction, wherein the second direction is opposite to thefirst direction.
5. The tunneling machine cutting apparatus according to claim 4, characterized in that
the first side (6a) is inclined downstream of the first direction along a direction away from
the threaded fastener (4); and
the second side (6b) is inclined downstream of the first direction along the direction away
from the threaded fastener (4).
6. The tunneling machine cutting apparatus according to claim 1, characterized in that a
shape of the positioning component (7) is adapted to a shape of a groove between two adjacent
positioning teeth (6).
7. The tunneling machine cutting apparatus according to claim 1, characterized in that at
least two positioning components (7) are provided, a distance between two adjacent positioning
teeth (6) is Li, a distance between two adjacent positioning components (7) is L 2, Li#n L 2 , and
L 2#n Li, wherein n is a natural number.
8. The tunneling machine cutting apparatus according to claim 7, characterized in that a
number of the positioning components (7) is N, L >Li, 2 and L 1 /(L 2 -L)N.
9. The tunneling machine cutting apparatus according to claim 1, further comprising a
limiting component (10) configured for limiting the fixing sleeve (5) in the pore channel.
10. A tunneling machine, comprising the tunneling machine cutting apparatus according to
any one of claims I to 9.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810897379.9A CN108825227A (en) | 2018-08-08 | 2018-08-08 | Development machine cutter device and development machine |
| CN201810897379.9 | 2018-08-08 | ||
| PCT/CN2019/097689 WO2020029803A1 (en) | 2018-08-08 | 2019-07-25 | Cutting apparatus of tunneling machine, and tunneling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2019320140A1 true AU2019320140A1 (en) | 2021-04-01 |
| AU2019320140B2 AU2019320140B2 (en) | 2023-02-02 |
Family
ID=64153805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2019320140A Active AU2019320140B2 (en) | 2018-08-08 | 2019-07-25 | Cutting apparatus of tunneling machine, and tunneling machine |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN108825227A (en) |
| AU (1) | AU2019320140B2 (en) |
| WO (1) | WO2020029803A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825227A (en) * | 2018-08-08 | 2018-11-16 | 徐州徐工基础工程机械有限公司 | Development machine cutter device and development machine |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4304046A1 (en) * | 1993-02-11 | 1994-08-18 | Westfalia Becorit Ind Tech | Fastening of the cutting strip to the body of a coal plough |
| CN201461699U (en) * | 2009-06-19 | 2010-05-12 | 郭武 | Bolt anti-loosing and protecting device |
| WO2011113113A1 (en) * | 2010-03-18 | 2011-09-22 | Southern Engineering Pty Ltd | Cutting pick, wear and mounting system for mining machine |
| CN101963184A (en) * | 2010-09-30 | 2011-02-02 | 赵耀 | Thread fastening device |
| CN201982459U (en) * | 2011-01-27 | 2011-09-21 | 晋德有限公司 | Anti-dismounting bolt |
| EP2514918B1 (en) * | 2011-04-20 | 2015-07-29 | Sandvik Intellectual Property AB | Cutting bit and bit holder |
| CN203717592U (en) * | 2014-01-23 | 2014-07-16 | 凯盛重工有限公司 | Anti-loosening device for locking nut |
| CN203822781U (en) * | 2014-04-18 | 2014-09-10 | 温州市诚一箱包五金有限公司 | Tube firmware |
| CN107202061A (en) * | 2016-03-20 | 2017-09-26 | 深圳带路科技有限公司 | A kind of Anti-looseness bolt device |
| PL3463777T3 (en) * | 2016-05-27 | 2023-12-11 | Joy Global Underground Mining Llc | Cutting device with wear elements |
| CN108071649A (en) * | 2016-11-16 | 2018-05-25 | 孙愉后 | Fastener |
| CN108071656A (en) * | 2016-11-16 | 2018-05-25 | 孙愉后 | Lock washer component |
| CN108825227A (en) * | 2018-08-08 | 2018-11-16 | 徐州徐工基础工程机械有限公司 | Development machine cutter device and development machine |
| CN208831000U (en) * | 2018-08-08 | 2019-05-07 | 徐州徐工基础工程机械有限公司 | Development machine cutter device and development machine |
-
2018
- 2018-08-08 CN CN201810897379.9A patent/CN108825227A/en active Pending
-
2019
- 2019-07-25 WO PCT/CN2019/097689 patent/WO2020029803A1/en active Application Filing
- 2019-07-25 AU AU2019320140A patent/AU2019320140B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020029803A1 (en) | 2020-02-13 |
| AU2019320140B2 (en) | 2023-02-02 |
| CN108825227A (en) | 2018-11-16 |
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| FGA | Letters patent sealed or granted (standard patent) |