CN115506802A - Impact rock cracking equipment and method - Google Patents
Impact rock cracking equipment and method Download PDFInfo
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- CN115506802A CN115506802A CN202211267818.0A CN202211267818A CN115506802A CN 115506802 A CN115506802 A CN 115506802A CN 202211267818 A CN202211267818 A CN 202211267818A CN 115506802 A CN115506802 A CN 115506802A
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- rotary table
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- 239000011435 rock Substances 0.000 title claims abstract description 40
- 238000005336 cracking Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000009412 basement excavation Methods 0.000 claims abstract description 50
- 238000009527 percussion Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 6
- 230000005641 tunneling Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 3
- 230000007246 mechanism Effects 0.000 description 7
- 238000010276 construction Methods 0.000 description 6
- 238000005422 blasting Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000003721 gunpowder Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000009964 serging Methods 0.000 description 1
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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
-
- 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
- E21D9/1093—Devices for supporting, advancing or orientating the machine or the tool-carrier
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- 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)
- Earth Drilling (AREA)
Abstract
The invention provides an impact rock cracking device and method, wherein the impact rock cracking device comprises a base, a first-stage rotary table, a folding arm, a large arm and a breaking hammer, wherein the first-stage rotary table, the folding arm, the large arm and the breaking hammer are sequentially hinged; wherein, be equipped with folding arm every single move regulating part between one-level revolving stage and the folding arm, be equipped with big arm every single move regulating part between second grade revolving stage and the big arm, be equipped with quartering hammer every single move regulating part between big arm and the quartering hammer. The invention has the advantages that the working surface of the breaking hammer is combined with the tunnel excavation surface through the first-stage turntable, the folding arm, the large arm and the second-stage turntable, so that zero over excavation and zero under excavation of tunnel excavation are realized; the invention has stable structure and convenient operation, is beneficial to the rapid tunneling of the tunnel and realizes zero over-excavation and zero under-excavation.
Description
Technical Field
The invention relates to the technical field of tunneling machinery, in particular to impact rock cracking equipment and an impact rock cracking method.
Background
With the rapid development of railways and highways, tunnel construction under various complex conditions puts higher requirements on construction methods. In the traditional construction, a harder surrounding rock tunnel is constructed by adopting a drilling and blasting method, but if the surrounding environment is complex, particularly when the tunnel passes through a city area, the tunnel is close to a residential area, buildings are dense, and the vibration in the construction process needs to be strictly controlled so as to prevent the influences of disturbing residents, building vibration cracking on the overlying ground surface and the like. With the limitation of gunpowder use and the improvement of environmental protection requirements, many projects are subject to the requirements of initiating explosive device management and environmental protection, and the construction time cannot be guaranteed. The non-blasting excavation method is one of the methods for avoiding the problems, and is a construction method which can not be carried out by adopting corresponding equipment through a blasting mode due to the influences of factors such as surrounding environment, management requirements, surrounding rock conditions and the like.
The existing mechanical excavation equipment realizes full-section tunnel excavation through a multi-stage folding arm support and a swing mechanism, but the existing non-explosive excavation mechanical equipment has insufficient freedom degree of the arm support, dead corners in local areas of a tunnel face cannot be reached, and zero over excavation and zero under excavation of a tunnel cannot be realized. And tunnel excavation of full section can be realized through adding up multistage folding cantilever crane and setting up a plurality of rotation mechanism, but the structure is complicated and poor stability, is unfavorable for using the quartering hammer to carry out hard rock breakage, tunnels.
In view of the above, there is a need for an apparatus and method for percussive breaking of rock that solves the problems of the prior art.
Disclosure of Invention
In order to solve the problems that the mechanical excavation equipment in the prior art is difficult to realize full-face tunnel excavation and a complex folding rotary arm support is poor in stability, the invention provides impact rock cracking equipment and a method, the impact rock cracking equipment adopts three-stage folding and two-stage rotation to realize full-face tunnel excavation, a breaking hammer can carry out breaking operation by being attached to a tunnel excavation surface, and zero over excavation and zero under excavation are realized, and the specific technical scheme is as follows:
the impact rock cracking equipment comprises a base, a first-stage rotary table, a folding arm, a large arm and a breaking hammer, wherein the first-stage rotary table, the folding arm, the large arm and the breaking hammer are sequentially hinged; a folding arm pitching adjusting piece is arranged between the first-stage turntable and the folding arm, and the pitching angle of the folding arm relative to the first-stage turntable is adjusted through the folding arm pitching adjusting piece; a large arm pitching adjusting piece is arranged between the secondary turntable and the large arm, and the pitching angle of the large arm relative to the secondary turntable is adjusted through the large arm pitching adjusting piece; a breaking hammer pitching adjusting piece is arranged between the large arm and the breaking hammer, and the pitching angle of the breaking hammer relative to the large arm is adjusted through the breaking hammer pitching adjusting piece;
the first-stage rotary table rotates around a first rotation center, and the second-stage rotary table rotates around a second rotation center.
Preferably, the folding arm comprises a first arm and a second arm which are connected in series and hinged with each other, a second arm pitching oil cylinder is hinged between the first arm and the second arm, and the pitching angle of the second arm relative to the first arm is adjusted through a second arm pitching adjusting piece; one end of the first arm, which is far away from the second arm, is hinged with the first-stage turntable, and one end of the second arm, which is far away from the first arm, is provided with the second-stage turntable.
Preferably, the folding arm pitching adjusting piece is a folding arm pitching oil cylinder, the large arm pitching adjusting piece is a large arm pitching oil cylinder, the breaking hammer pitching adjusting piece is a breaking hammer pitching oil cylinder, and the two-arm pitching adjusting piece is a two-arm pitching oil cylinder.
Preferably, the pitch directions of the first arm and the second arm are located on the same vertical plane.
Preferably, the plane of revolution of the primary turntable is arranged along a horizontal line.
Preferably, the breaking hammer is a high-frequency vibration breaking hammer.
Preferably, the working face of the breaking hammer is attached to the tunnel excavation face through the rotary motion of the first-stage rotary table and the second-stage rotary table and the pitching motion of the folding arm and the large arm.
In addition, the invention also provides an impact rock cracking method which is applied to the impact rock cracking equipment and specifically comprises the following steps:
firstly, adjusting the positions of a secondary turntable, a large arm and a breaking hammer through the rotary motion of a primary turntable and the pitching motion of a folding arm;
secondly, moving the breaking hammer to the position near the tunnel excavation surface through the rotary motion of the secondary turntable and the pitching motion of the large arm, and enabling the plane where the pitching motion direction of the pitching cylinder of the breaking hammer is located to be vertical to the tunnel excavation surface through the rotary motion of the secondary turntable and the pitching motion of the large arm in the process;
thirdly, adjusting the pitching angle of the breaking hammer to enable the working surface of the breaking hammer to be parallel to the tunnel excavation surface, and enabling the working surface of the breaking hammer to be attached to the tunnel excavation surface by adjusting the folding angle of the folding arm;
and fourthly, starting the breaking hammer to break the hard rock of the tunnel.
The technical scheme of the invention has the following beneficial effects:
(1) According to the impact rock cracking equipment provided by the invention, the working surface of the breaking hammer is matched with the tunnel excavation surface through the combination of the primary rotary table, the folding arm, the large arm and the secondary rotary table, and zero over excavation and zero under excavation of tunnel excavation are realized. In addition, the folding arm can be a two-stage folding arm consisting of the first arm and the second arm, the position of the breaking hammer can be adjusted on the premise that the working face angle of the breaking hammer is not changed by pitching motion between the first arm and the second arm, the breaking hammer can be attached to the tunnel excavation face conveniently, the tunneling width of the impact rock breaking equipment is improved, and the combined structure of the first-stage turntable, the first arm, the second arm, the large arm and the second-stage turntable is stable, so that the breaking hammer can be used for breaking hard rock conveniently, and zero over-excavation and zero under-excavation of tunnel tunneling are guaranteed.
(2) According to the rock burst impacting method, the working surface of the breaking hammer is matched with the tunnel excavation surface by sequentially adjusting the primary rotary table, the folding arm, the secondary rotary table, the large arm and the breaking hammer, so that the breaking hammer breaks the hard rock of the tunnel and simultaneously guarantees zero over excavation and zero under excavation of tunnel excavation.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 3 is a schematic illustration of the demolition hammer of FIG. 1 during demolition;
FIG. 4 is a schematic diagram of the percussion rock breaking apparatus of FIG. 1 during a tunneling operation;
fig. 5 is a schematic view of a high-depression breaking of the percussion cracking apparatus of fig. 1.
The system comprises a base 1, a primary turntable 2, a large arm 3, a large arm pitching cylinder 3.1, a breaking hammer 4, a link mechanism 4.1, a breaking hammer pitching cylinder 4.2, a first arm 5, a first arm pitching cylinder 5.1, a second arm 6, a second arm pitching cylinder 6.1, a secondary turntable 7, a first gyration center a and a second gyration center b.
Detailed Description
Embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
Example 1:
referring to fig. 1, the embodiment discloses an impact rock cracking device, which includes a base 1, and a first-stage rotary table 2, a folding arm, a large arm 3 and a breaking hammer 4 which are hinged in sequence, wherein the preferred folding arm of the embodiment includes a first arm 5 and a second arm 6, the first-stage rotary table 2 is arranged on the base 1 and connected with the first arm 5, the first arm 5 is hinged with the second arm 6, a second-stage rotary table 7 is arranged at one end of the second arm 6 far away from the first arm 5, and the second-stage rotary table 7 is hinged with the large arm 3.
Further, the primary turntable 2 performs a revolving motion around a first revolving center a, and the secondary turntable 7 performs a revolving motion around a second revolving center b. The first-stage rotary table 2 and the second-stage rotary table 7 can complete 360-degree rotation angles, power sources of the first-stage rotary table 2 and the second-stage rotary table 7 are motors, and all-dimensional no-dead-angle covering operation is achieved.
Preferably, the power source of the first-stage rotary table 2 can also be a deflection oil cylinder, the deflection oil cylinder realizes 120-degree deflection of the first-stage rotary table 2, and the impact rock cracking equipment is used for crushing hard rock in a tunnel, so that the deflection central line of the first-stage rotary table 2 is the same as the tunneling excavation direction of the tunnel. The secondary turntable 7 is a hydraulic rotary table.
Further, a pitching adjusting piece for driving the corresponding component is arranged between the first-stage turntable 2 and the first arm 5, between the first arm 5 and the second arm 6, between the second-stage turntable 7 and the large arm 3, and between the large arm 3 and the breaking hammer 4, the preferred pitching adjusting piece in the embodiment is a pitching cylinder, the pitching cylinder comprises a cylinder body and a piston rod, and the specific setting is as follows:
an arm pitching oil cylinder 5.1 is arranged between the first-stage rotary table 2 and the arm 5, an oil cylinder body of the arm pitching oil cylinder 5.1 is hinged to the first-stage rotary table 2, a piston rod of the arm pitching oil cylinder 5.1 is hinged to the arm 5, and the arm pitching oil cylinder 5.1 is used for driving the arm 5 to perform pitching motion relative to the first-stage rotary table 2.
A two-arm pitching oil cylinder 6.1 is arranged between the first arm 5 and the second arm 6, an oil cylinder body of the two-arm pitching oil cylinder 6.1 is hinged to the first arm 5, a piston rod of the two-arm pitching oil cylinder 6.1 is hinged to the second arm 6, and the two-arm pitching oil cylinder 6.1 is used for driving the first arm 5 to perform pitching motion relative to the second arm 6. It should be noted that, in this embodiment, the two arm pitching cylinders 6.1 are arranged on the first arm 5 along the hinge point of the second arm 6 and the first arm 5 in bilateral symmetry, so that the stability of the folding arm support can be improved, and it is ensured that the breaking hammer can be stably excavated along the set route in the working process.
Preferably, the pitch space of the first arm 5 and the pitch direction of the second arm 6 are located on the same vertical plane, so that the stability of the folding arm can be improved, the service life of the folding arm can be prolonged, and the rapid loss of parts of a hinge part in the folding arm caused by multi-stage folding can be avoided.
The large arm pitching oil cylinder 3.1 is arranged between the second-stage rotary table 7 and the large arm 3, an oil cylinder body of the large arm pitching oil cylinder 3.1 is hinged to the second-stage rotary table 7, a piston rod of the large arm pitching oil cylinder 3.1 is hinged to the large arm 3, and the large arm pitching oil cylinder 3.1 is used for driving the large arm 3 to perform pitching motion relative to the second-stage rotary table 7. It should be noted that, in this embodiment, the two cylinder bodies are arranged on the large arm pitching cylinders 3.1 symmetrically arranged on the second-stage turntable 7 along the hinge point of the large arm 3 and the second-stage turntable 7, so that the stability of the foldable arm support can be improved, and the stable excavation along the set route in the operation process of the breaking hammer 4 can be ensured.
Be equipped with link mechanism 4.1 and quartering hammer every single move hydro-cylinder 4.2 between big arm 3 and the quartering hammer 4, 4 articulated link mechanisms 4.1 of quartering hammer, the piston rod of the articulated quartering hammer every single move hydro-cylinder 4.2 of link structure, the articulated big arm 3 of hydro-cylinder body of quartering hammer every single move hydro-cylinder 4.2, link structure and 4.2 combinations realization quartering hammer 4 carries out the pitching motion for big arm 3, link mechanism 4.1 and quartering hammer every single move hydro-cylinder 4.2 can realize the every single move angle of quartering hammer 0 to 100 degrees.
Specifically, as shown in fig. 2, the link mechanism 4.1 includes a first link 4.11 and a second link 4.12, the first link 4.11 includes a first end 4.11-a and a second end 4.11-b, the second link 4.12 includes a third end 4.12-a and a fourth end 4.12-b, the first end 4.11-a is hinged with the breaking hammer 4, the third end 4.12-a is hinged with the large arm 3, and the second end 4.11-b and the fourth end 4.12-b are hinged with the piston rod of the breaking hammer pitch cylinder 4.2.
Preferably, all the hinges in this embodiment are implemented by pin connections.
Preferably, the rotary plane of the first-stage rotary table 2 is arranged along the horizontal direction, so that the impact cracking equipment is more stable, and the stability of the impact cracking equipment in the process of crushing and excavating is improved.
Preferably, quartering hammer 4 is the high-frequency vibration quartering hammer, the broken tooth of high-frequency vibration quartering hammer is the broken tooth structure of board type, can laminate the tunnel excavation face better, realizes zero super digging.
In addition, the embodiment further provides an impact rock cracking method based on the impact rock cracking equipment, which includes the following specific steps:
referring to fig. 3, in this embodiment, the positions of the second-stage turntable 7, the large arm 3 and the breaking hammer 4 can be adjusted by the deflection of the first-stage turntable 2 and the pitching of the first arm 5 and the second arm 6, the breaking hammer 4 is moved to the vicinity of the tunnel excavation surface by 360-degree rotary motion of the second-stage turntable 7 and the pitching cylinder 3.1 of the large arm, and the second-stage turntable 7 and the pitching cylinder 3.1 of the large arm are adjusted to make the pitching surface of the pitching cylinder 4.2 of the breaking hammer perpendicular to the tunnel excavation surface, and then the pitching angle of the breaking hammer 4 is adjusted by the pitching cylinder 4.2 of the breaking hammer, so that the breaking teeth of the breaking hammer 4 are attached to the tunnel excavation surface, if a certain distance still exists between the breaking hammer 4 and the tunnel excavation surface, the pitching motion can be performed by the first arm 5 and the second arm 6, and on the premise that the angle of the breaking hammer is not changed, the breaking hammer is started to break the hard rock of the tunnel, and zero overedging and the zero undermining are realized.
As shown in fig. 4, in this embodiment, full-face excavation can be achieved, and the angle between the rotation planes of the first-stage turntable 2 and the second-stage turntable 7 is adjusted by the folding degree of the folding arm, so that zero over-excavation and zero under-excavation covered by the full working face of the tunnel can be achieved.
As shown in fig. 5, the present embodiment can also realize the crushing of the tunnel hard rock with a large depression angle, and the hard rock under the impact rock cracking equipment can be crushed through the folding of the folding arm and the bending between the large arms.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The equipment for rock burst by impact is characterized by comprising a base (1), a first-stage rotary table (2), a folding arm, a large arm (3) and a breaking hammer (4), wherein the first-stage rotary table (2) is sequentially hinged to the base and connected with the folding arm, a second-stage rotary table (7) is arranged at one end, far away from the first-stage rotary table (2), of the folding arm, and the large arm (3) is hinged to the second-stage rotary table (7); a folding arm pitching adjusting piece is arranged between the first-stage rotary table (2) and the folding arm, and the pitching angle of the folding arm relative to the first-stage rotary table (2) is adjusted through the folding arm pitching adjusting piece; a large arm pitching adjusting part is arranged between the secondary turntable (7) and the large arm (3), and the pitching angle of the large arm (3) relative to the secondary turntable (7) is adjusted through the large arm pitching adjusting part; a breaking hammer pitching adjusting piece is arranged between the large arm (3) and the breaking hammer (4), and the pitching angle of the breaking hammer (4) relative to the large arm (3) is adjusted through the breaking hammer pitching adjusting piece;
the primary rotary table (2) rotates 360 degrees around a first rotation center (a), and the secondary rotary table (7) rotates 360 degrees around a second rotation center (b).
2. The percussion rock breaking apparatus according to claim 1, characterized in that the folding arm comprises a first arm (5) and a second arm (6) connected in series and hinged to each other, a second arm pitch ram (6.1) is hinged between the first arm (5) and the second arm (6), and the pitch angle of the second arm (6) relative to the first arm (5) is adjusted by a second arm pitch adjuster; one end of the first arm (5) far away from the second arm (6) is hinged with the first-stage rotary table (2), and one end of the second arm (6) far away from the first arm (5) is provided with the second-stage rotary table (7).
3. The percussive rock breaking apparatus according to claim 2, wherein the folding arm pitch adjustment is a folding arm pitch ram, the large arm pitch adjustment is a large arm pitch ram (3.1), the breaking hammer pitch adjustment is a breaking hammer pitch ram (4.2), and the two arm pitch adjustment is a two arm pitch ram (6.1).
4. The percussion rock breaking apparatus according to claim 2, wherein the pitch directions of the arms (5, 6) lie in the same vertical plane.
5. Percussion rock breaking apparatus according to claim 1, characterized in that the plane of revolution of the primary turret (2) is arranged along a horizontal plane.
6. An impact cracking apparatus according to claim 1, characterized in that the breaking hammer (4) is a high-frequency vibration breaking hammer.
7. The percussion rock breaking apparatus according to claim 1, wherein the breaking hammer (4) is adapted to the working surface of the breaking hammer (4) to the tunnel excavation surface by the gyrating movement of the primary turntable (2) and the secondary turntable (7) and the pitching movement of the folding arm and the large arm (3).
8. A method for percussion rock breaking, characterized in that a percussion rock breaking apparatus according to any one of claims 1-7 is used, the method being embodied as follows:
firstly, adjusting the positions of a secondary turntable (7), a large arm (3) and a breaking hammer (4) through the rotary motion of a primary turntable (2) and the pitching motion of a folding arm;
secondly, moving the breaking hammer (4) to the position near the tunnel excavation surface through the rotary motion of the secondary rotary table (7) and the pitching motion of the large arm (3), and enabling the plane where the pitching motion direction of the breaking hammer pitching oil cylinder (4.2) is located to be vertical to the tunnel excavation surface through the rotary motion of the secondary rotary table (7) and the pitching motion of the large arm (3) in the process;
thirdly, adjusting the pitching angle of the breaking hammer (4) to enable the working surface of the breaking hammer (4) to be parallel to the tunnel excavation surface, and enabling the working surface of the breaking hammer (4) to be attached to the tunnel excavation surface by adjusting the folding angle of the folding arm;
and fourthly, starting the breaking hammer (4) to break the hard rock of the tunnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211267818.0A CN115506802A (en) | 2022-10-17 | 2022-10-17 | Impact rock cracking equipment and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211267818.0A CN115506802A (en) | 2022-10-17 | 2022-10-17 | Impact rock cracking equipment and method |
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| Publication Number | Publication Date |
|---|---|
| CN115506802A true CN115506802A (en) | 2022-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211267818.0A Pending CN115506802A (en) | 2022-10-17 | 2022-10-17 | Impact rock cracking equipment and method |
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| CN (1) | CN115506802A (en) |
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| CN203569601U (en) * | 2013-09-27 | 2014-04-30 | 安徽惊天液压智控股份有限公司 | Novel breaking and digging loader |
| CN205224134U (en) * | 2015-11-26 | 2016-05-11 | 宜昌长兴机械制造有限公司 | Excavator robotic arm and multi -functional excavator |
| CN106854879A (en) * | 2017-01-23 | 2017-06-16 | 遂宁市长丰机械科技有限公司 | There is the rig on the excavator of quartering hammer |
| CN208917893U (en) * | 2018-04-08 | 2019-05-31 | 中交一航局第二工程有限公司 | A kind of dredger hydraulic efficiency manipulator |
| KR102053725B1 (en) * | 2019-05-13 | 2019-12-09 | 지원섭 | Environment-friendly low-noise vibration-free rock crushing device and method of rock crushing using |
| CN216894410U (en) * | 2022-03-09 | 2022-07-05 | 四川蓝海智能装备制造有限公司 | Mechanical arm for heading machine and heading machine |
| US20220235658A1 (en) * | 2021-01-25 | 2022-07-28 | Shandong Jianzhu University | Travelling-type tunnel hard-rock micro-damage cutting equipment and construction method associated therewith |
| CN217204371U (en) * | 2022-01-29 | 2022-08-16 | 中铁十一局集团有限公司 | Quick excavation machinery crushing head device in subway station tunnel |
-
2022
- 2022-10-17 CN CN202211267818.0A patent/CN115506802A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06136778A (en) * | 1992-10-21 | 1994-05-17 | Yanmar Diesel Engine Co Ltd | All-round rotary type excavator |
| JPH11230744A (en) * | 1998-02-12 | 1999-08-27 | Saeki Kensetsu Kogyo Co Ltd | Float type inclinometer |
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| CN208917893U (en) * | 2018-04-08 | 2019-05-31 | 中交一航局第二工程有限公司 | A kind of dredger hydraulic efficiency manipulator |
| KR102053725B1 (en) * | 2019-05-13 | 2019-12-09 | 지원섭 | Environment-friendly low-noise vibration-free rock crushing device and method of rock crushing using |
| US20220235658A1 (en) * | 2021-01-25 | 2022-07-28 | Shandong Jianzhu University | Travelling-type tunnel hard-rock micro-damage cutting equipment and construction method associated therewith |
| CN217204371U (en) * | 2022-01-29 | 2022-08-16 | 中铁十一局集团有限公司 | Quick excavation machinery crushing head device in subway station tunnel |
| CN216894410U (en) * | 2022-03-09 | 2022-07-05 | 四川蓝海智能装备制造有限公司 | Mechanical arm for heading machine and heading machine |
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