CN110965543A - Underwater rock block foundation bed automatic control tamping system with hydraulic driving mechanism - Google Patents
Underwater rock block foundation bed automatic control tamping system with hydraulic driving mechanism Download PDFInfo
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- CN110965543A CN110965543A CN201911242924.1A CN201911242924A CN110965543A CN 110965543 A CN110965543 A CN 110965543A CN 201911242924 A CN201911242924 A CN 201911242924A CN 110965543 A CN110965543 A CN 110965543A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 37
- 239000011435 rock Substances 0.000 title description 3
- 239000004575 stone Substances 0.000 claims abstract description 10
- 230000033001 locomotion Effects 0.000 claims description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 238000005056 compaction Methods 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000008278 dynamic mechanism Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 6
- 239000000725 suspension Substances 0.000 description 6
- 230000005484 gravity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/046—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Abstract
The invention discloses an automatic control tamping system with a hydraulic driving mechanism for an underwater stone foundation bed, which comprises a barge, a tamping hammer and a tamping lifting mechanism used for lifting or putting down the tamping hammer, wherein the tamping lifting mechanism comprises a base. The invention can adjust the position of the rammer according to the requirement, thereby adjusting the position of the ramming point of the rammer, conveniently realizing the positioning of the ramming point, ensuring the construction quality, and having high ramming efficiency.
Description
Technical Field
The invention relates to the technical field of tamping equipment, in particular to an automatic control tamping system with a hydraulic driving mechanism for an underwater stone foundation bed.
Background
In the construction of wharfs, gravity wharfs have the dual functions of wharf structures and soil retaining structures, are widely applied and have a long use history. The underwater block stone foundation bed tamping is an important process in the construction of the gravity wharf, and the tamping mass of the block stone foundation bed is related to the construction period settlement and the post-construction settlement of the wharf foundation and is the key point of the mass control of the gravity wharf. The construction specification requires that the riprap foundation bed is tamped by adopting a method of longitudinally and transversely abutting and semi-tamping, 1 hammer per point, tamping for 1 time respectively by primary tamping and secondary tamping or tamping for multiple times, and the tamping times are determined by trial tamping.
The existing underwater rubble-riprap foundation bed tamping method usually adopts a grab dredger, the grab is replaced by a tamping hammer for tamping, or a flat barge is adopted as a working ship, 1 crawler crane (or a dynamic compactor) is installed on a deck of the barge, and the tamping hammer is quickly hooked after being hoisted to a certain height (about 2-4m) by a single rope, so that the tamping hammer is quickly tamped to a foundation bed like a free falling body. The two tamping methods are realized by longitudinally and transversely adjacent semi-tamping through the rotation angle and the amplitude variation of the suspension arm, and tamping points are arranged in an arc shape.
The tamping methods all have the following disadvantages: the construction cost of the grab dredger is high, the cost of the crawler crane and the dynamic compactor is high, and the tamping point positioning is not facilitated.
It follows that the prior art has certain drawbacks.
Disclosure of Invention
In view of the above, in order to solve the problems in the prior art, the invention provides an automatic control tamping system with a hydraulic driving mechanism for an underwater rock-block foundation bed, which is convenient for positioning a tamping point and has high construction efficiency.
The invention solves the problems through the following technical means:
the utility model provides an underwater lump-rock foundation bed automatic control tamping system with hydraulic drive mechanism, includes barge, ram and is used for with the rammer is lifted or is put down carries ramming mechanism, it includes the frame to carry ramming mechanism, its characterized in that, be fixed with two parallel and interval arrangement's guide rail on the barge, frame sliding connection is two the guide rail, tamping system still includes and is used for driving the gliding hydraulic drive mechanism of frame.
Furthermore, the guide rail is I-shaped steel, the bottom of the machine base is provided with a sliding dynamic mechanism, and the sliding dynamic mechanism enables the machine base to slide on the guide rail more stably.
Furthermore, the sliding moving mechanism comprises two groups of left sliding moving components and two groups of right sliding moving components, the two groups of left sliding moving components are arranged at the left end of the machine base, and two groups of left sliding moving direction components are respectively arranged on two guide rails at the left end of the machine base, two groups of right sliding moving direction components are arranged at the right end of the machine base, and two groups of right sliding motion direction components are respectively arranged on two guide rails at the right end of the machine base, the hydraulic driving mechanism comprises two pushing hydraulic cylinders and two clamping components, the two pushing hydraulic cylinders are arranged at the right end of the machine base, the two pushing hydraulic cylinders correspond to the two right sliding motion direction components one by one, the movable rod of each pushing hydraulic cylinder is connected with the right sliding motion direction component, the fixed part of each pushing hydraulic cylinder is hinged with the right end of the machine base, the clamping assembly is arranged in the right sliding moving assembly and used for locking the right sliding moving assembly to be fixed on the guide rail.
Furthermore, the clamping assembly comprises two clamping hydraulic cylinders which are arranged oppositely and a top pressure hydraulic cylinder which is arranged vertically, and movable rods of the two clamping hydraulic cylinders and the top pressure hydraulic cylinder are both provided with a clamping plate.
Furthermore, the left sliding moving component or the right sliding moving component comprises a reverse buckling seat, two guide wheels which are oppositely arranged and can rotate around a self-axis are arranged in the reverse buckling seat, and the outer side surfaces of the two guide wheels are attached to the two outer side surfaces of the guide rail.
Furthermore, the tamper lifting mechanism further comprises a main machine suspension arm, a lifting steel wire rope and a lifting winch, wherein the lower end part of the main machine suspension arm is connected with the base, the inner end of the lifting steel wire rope is fixedly connected with the lifting winch, the outer end of the lifting steel wire rope is fixedly connected with the rammer, and the middle part of the lifting steel wire rope is slidably connected to the upper end part of the main machine suspension arm.
Furthermore, the lower tip of host computer davit with the frame is articulated mutually, the tamping system still includes the bracing piece, the upper end of bracing piece is articulated mutually with the host computer davit, the lower tip of bracing piece can for the frame horizontal migration just is fixed a position on the frame.
Furthermore, an amplitude-variable beam extending along the horizontal direction is fixed on the machine base, a plurality of jacks distributed along the horizontal direction are formed in the amplitude-variable beam, the lower end part of the support rod is hinged with an anchor ear, and the anchor ear is fixed on the amplitude-variable beam through a bolt.
Furthermore, a screw rod extending along the horizontal direction is fixed on the machine base, a hoop is hinged to the lower end portion of the supporting rod, the hoop is in threaded transmission connection with the screw rod, and a first driving motor used for driving the screw rod to rotate is fixed on the machine base.
Compared with the prior art, the invention has the following beneficial effects:
1. the underwater stone block tamping system can adjust the position of the tamping hammer according to the requirement, so that the position of a tamping point of the tamping hammer is adjusted, the positioning of the tamping point is very conveniently realized, the construction quality is ensured, and the tamping efficiency is high;
2. the underwater block stone tamping system can enable the base to slide in parallel, and improve the moving stability of the base;
3. the underwater block stone tamping system can cover the tamping width of the foundation bed at one time, and can tamp a plurality of rows after the working barge is positioned at one time.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a hydraulic drive mechanism according to a first embodiment;
FIG. 3 is a schematic diagram of the left slide steering assembly according to one embodiment;
FIG. 4 is a schematic diagram of the right sliding motion assembly according to one embodiment;
FIG. 5 is a schematic view of a clamping assembly according to one embodiment;
FIG. 6 is a schematic view of the connection between the hoop and the amplitude changing beam in the first embodiment;
fig. 7 is a schematic view of the connection between the anchor ear and the amplitude variable beam in the second embodiment.
Description of reference numerals:
1. a rammer; 2. hoisting a steel wire rope; 3. a main engine suspension arm; 4. a support bar; 5. hoisting a winch; 6. a machine base; 7. an amplitude-variable beam; 7a, a jack; 8. hooping; 9. a barge; 10. a lifting and tamping mechanism; 11. a guide rail; 13. a hydraulic drive mechanism; 14. a back-buckling seat; 15. a screw rod; 16. a first drive motor; 17. a left sliding motion component; 18. a right sliding motion component; 19. a clamping assembly; 20. pushing the hydraulic cylinder; 21. clamping a hydraulic cylinder; 22. jacking and pressing the hydraulic cylinder; 23. a clamping plate; 25. a guide wheel.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It should be noted that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.
It is to be understood that the terms "top," "bottom," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and simplifying the description, and are not intended to indicate or imply that the referenced devices or elements must have the specified orientations, be constructed and operated in the specified orientations, and are not to be construed as limiting the present invention.
The terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", "third" may explicitly or implicitly include one or more of the features. In the description of the present invention, a "set" means two or more unless otherwise specified.
Example one
As shown in figures 1-2, the invention discloses an automatic control tamping system with a hydraulic driving mechanism for an underwater stone foundation bed, which specifically comprises a barge 9, a tamping hammer 1 and a tamper lifting mechanism 10 for lifting or lowering the tamping hammer 1, wherein the tamper lifting mechanism 10 comprises a machine base 6, and is characterized in that two guide rails 11 which are parallel to each other and arranged at intervals are fixed on the barge 9, the machine base 6 is connected with the two guide rails 11 in a sliding manner, and the tamping system further comprises a hydraulic driving mechanism 13 for driving the machine base 6 to slide. This tamping system includes barge 9, ram 1 and carries rammer mechanism 10, carry rammer mechanism 10 and can mention ram 1 and put down after the take the altitude, ram 1 moves under the action of gravity, until strike on the stone foundation bed of block under water, under the drive of hydraulic drive mechanism 13, make and carry rammer mechanism 10 and slide on two guide rails 11, can adjust the position of ram 1 as required, thereby adjust the rammer point position of ram 1, very convenient realization is to the location of rammer point, guarantee construction quality, and it is efficient to tamp.
Preferably, the guide rail 11 is an i-steel, and a sliding moving mechanism is arranged at the bottom of the machine base 6, so that the machine base 6 can slide on the guide rail 11 more stably.
As shown in fig. 2, in this embodiment, the sliding motion mechanism includes two sets of left sliding motion components 17 and two sets of right sliding motion components 18, the two sets of left sliding motion components 17 are disposed at the left end of the base 6, the two sets of left sliding motion components 17 are disposed on the two guide rails 11 at the left end of the base 6 respectively, the two sets of right sliding motion components 18 are disposed at the right end of the base 6, the two sets of right sliding motion components 18 are disposed on the two guide rails 11 at the right end of the base 6 respectively, the hydraulic driving mechanism 13 includes two pushing hydraulic cylinders 20 and two clamping components 19, the two pushing hydraulic cylinders 20 are disposed at the right end of the base 6, the two pushing hydraulic cylinders 20 correspond to the two right sliding motion components 18 one by one, the movable rods of the pushing hydraulic cylinders 20 are connected to the right sliding motion components 18, and the fixing portions of the pushing hydraulic cylinders 20 are hinged to the right end of the base 6, the clamping assembly 19 is arranged in the right sliding moving direction assembly 18, and the clamping assembly 19 is used for locking the right sliding moving direction assembly 18 to be fixed on the guide rail 11. The clamping assembly 19 locks the right sliding steering assembly 18 to be fixed on the guide rail 11, and the two pushing hydraulic cylinders 20 are used as fixed supporting points to push or pull the stand 6. The hydraulic push-pull rod can move once after one tamping point is punched according to the PLC program, the stroke of the oil cylinder is 50cm, and manual calibration of the guide rail 11 is not needed.
As shown in fig. 5, in the present embodiment, the clamping assembly 19 includes two opposite clamping hydraulic cylinders 21 and a vertically arranged pressing hydraulic cylinder 22, and a clamping plate 23 is disposed on the movable rod of each of the two clamping hydraulic cylinders 21 and the movable rod of the pressing hydraulic cylinder 22. The two oppositely arranged clamping hydraulic cylinders 21 drive the clamping plates 23 to move oppositely until the clamping plates are pressed against the two outer side surfaces of the guide rail 11, the jacking hydraulic cylinders 22 drive the clamping plates 23 to move downwards until the clamping plates are pressed against the top surface of the guide rail 11, and the right sliding moving direction assembly 18 is locked on the guide rail 11 by clamping the three surfaces of the guide rail 11.
As shown in fig. 3-4, in the present embodiment, each of the left sliding motion assembly 17 and the right sliding motion assembly 18 includes a reverse buckling base 14, two guide wheels 25 are disposed in the reverse buckling base 14 and can rotate around a self-axis, and outer side surfaces of the two guide wheels 25 abut against two outer side surfaces of the guide rail 11. The structure that the lateral surface of leading wheel 25 and two lateral surfaces of guide rail 11 are leaned on mutually makes frame 6 slide on guide rail 11 more steadily, smoothly, and at the gliding in-process of frame 6, leading wheel 25 can rotate around the axis certainly, is sliding friction between leading wheel 25 and the boss, and frictional force between the two is littleer, can reduce the wearing and tearing between the two, improves life.
As shown in fig. 1, in this embodiment, the tamper lifting mechanism 10 further includes a main machine boom 3, a lifting wire rope 2, and a hoisting winch 5, wherein a lower end of the main machine boom 3 is connected to the base 6, an inner end of the lifting wire rope 2 is fixedly connected to the hoisting winch 5, an outer end of the lifting wire rope 2 is fixedly connected to the tamper 1, and a middle portion of the lifting wire rope 2 is slidably connected to an upper end of the main machine boom 3. The hoisting winch 5 can retract or release the hoisting steel wire rope 2, so that the rammer 1 is lifted or put down, and the upper end part of the main machine suspension arm 3 plays a role in supporting the hoisting steel wire rope 2.
As shown in fig. 1, in the present embodiment, the lower end of the main machine boom 3 is hinged to the base 6, the compaction system further comprises a support rod 4, the upper end of the support rod 4 is hinged to the main machine boom 3, and the lower end of the support rod 4 can move horizontally relative to the base 6 and is positioned on the base 6. Host computer davit 3 and bracing piece 4 constitute luffing mechanism, move the lower tip of bracing piece 4 on the horizontal direction, and the upper end of bracing piece 4 can stimulate host computer davit 3 swing, makes the upper end of host computer davit 3 move in the horizontal direction to drive rammer 1 and move on the horizontal direction, the rammer point position of regulation rammer 1 that this structure can be more convenient, and improve the precision of rammer point position control.
As shown in fig. 6, in this embodiment, an amplitude-variable beam 7 extending in the horizontal direction is fixed on the base 6, a plurality of insertion holes 7a distributed in the horizontal direction are formed in the amplitude-variable beam 7, the lower end of the support rod 4 is hinged to an anchor ear 8, and the anchor ear 8 is fixed on the amplitude-variable beam 7 through a bolt. In the structure, under the traction of a traction device such as a variable amplitude winch and the like, the hoop 8 moves along the variable amplitude beam 7 to realize variable amplitude, and the hoop 8 is fixed on the variable amplitude beam 7 through the bolt to realize the positioning of the lower end part of the support rod 4.
Example two
As shown in fig. 7, the structure and principle of the present embodiment are substantially the same as those of the first embodiment, except that a screw rod 15 extending along the horizontal direction is fixed on the base 6, a hoop 8 is hinged to the lower end of the support rod 4, the hoop 8 is in threaded transmission connection with the screw rod 15, and a first driving motor 16 for driving the screw rod 15 to rotate is fixed on the base 6. In this structure, the screw rod 15 is rotated by the driving of the first driving motor 16, so that the anchor ear 8 is moved in the horizontal direction, and the amplitude variation is realized.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. An automatic control tamping system with a hydraulic driving mechanism for an underwater stone foundation bed is characterized by comprising a barge (9), a tamping hammer (1) and a tamper lifting mechanism (10) for lifting or lowering the tamping hammer (1), wherein the tamper lifting mechanism (10) comprises a machine base (6), the automatic control tamping system is characterized in that two guide rails (11) which are parallel to each other and arranged at intervals are fixed on the barge (9), the machine base (6) is connected with the two guide rails (11) in a sliding manner, and the hydraulic driving mechanism (13) for driving the machine base (6) to slide is further comprised.
2. The compaction system according to claim 1, wherein the guide rails (11) are i-steel, and the base (6) is provided at the bottom with a sliding motion mechanism that enables the base (6) to slide on the guide rails (11) more smoothly.
3. The compaction system according to claim 2, wherein the sliding dynamic mechanism comprises two sets of left sliding dynamic components (17) and two sets of right sliding dynamic components (18), the two sets of left sliding dynamic components (17) are arranged at the left end of the machine base (6), the two sets of left sliding dynamic components (17) are respectively arranged on the two guide rails (11) at the left end of the machine base (6), the two sets of right sliding dynamic components (18) are arranged at the right end of the machine base (6), the two sets of right sliding dynamic components (18) are respectively arranged on the two guide rails (11) at the right end of the machine base (6), the hydraulic driving mechanism (13) comprises two pushing hydraulic cylinders (20) and two clamping components (19), the two pushing hydraulic cylinders (20) are arranged at the right end of the machine base (6), and the two pushing hydraulic cylinders (20) correspond to the two right sliding dynamic components (18) one by one, the movable rod of the pushing hydraulic cylinder (20) is connected with the right sliding movement component (18), the fixing part of the pushing hydraulic cylinder (20) is hinged to the right end of the machine base (6), the clamping component (19) is arranged in the right sliding movement component (18), and the clamping component (19) is used for locking the right sliding movement component (18) and is fixed on the guide rail (11).
4. The compaction system according to claim 3, wherein the clamping assembly (19) comprises two oppositely arranged clamping hydraulic cylinders (21) and a vertically arranged jacking hydraulic cylinder (22), and a clamping plate (23) is arranged on the movable rod of each of the two clamping hydraulic cylinders (21) and the jacking hydraulic cylinder (22).
5. The compaction system according to claim 3, wherein the left sliding dynamic component (17) or the right sliding dynamic component (18) comprises a back-buckling seat (14), two guide wheels (25) which are oppositely arranged and can rotate around a self-axis are arranged in the back-buckling seat (14), and the outer side surfaces of the two guide wheels (25) are attached to the two outer side surfaces of the guide rail (11).
6. The compaction system according to claim 1, wherein the tamper lifting mechanism (10) further comprises a main machine boom (3), a lifting wire rope (2) and a lifting winch (5), wherein the lower end of the main machine boom (3) is connected with the base (6), the inner end of the lifting wire rope (2) is fixedly connected with the lifting winch (5), the outer end of the lifting wire rope (2) is fixedly connected with the rammer (1), and the middle part of the lifting wire rope (2) is slidably connected with the upper end of the main machine boom (3).
7. The compaction system according to claim 6, wherein the lower end of the main machine boom (3) is articulated with the machine base (6), the compaction system further comprising a support bar (4), the upper end of the support bar (4) being articulated with the main machine boom (3), the lower end of the support bar (4) being horizontally movable relative to the machine base (6) and being positioned on the machine base (6).
8. The compaction system according to claim 7, wherein the frame (6) is fixed with a luffing beam (7) extending in the horizontal direction, the luffing beam (7) is provided with a plurality of jacks (7a) distributed in the horizontal direction, the lower end of the support rod (4) is hinged with a hoop (8), and the hoop (8) is fixed on the luffing beam (7) through a bolt.
9. The compaction system according to claim 7, wherein a screw rod (15) extending in the horizontal direction is fixed on the machine base (6), the lower end of the support rod (4) is hinged with a hoop (8), the hoop (8) is in threaded transmission connection with the screw rod (15), and a first driving motor (16) for driving the screw rod (15) to rotate is fixed on the machine base (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911242924.1A CN110965543A (en) | 2019-12-06 | 2019-12-06 | Underwater rock block foundation bed automatic control tamping system with hydraulic driving mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911242924.1A CN110965543A (en) | 2019-12-06 | 2019-12-06 | Underwater rock block foundation bed automatic control tamping system with hydraulic driving mechanism |
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| CN110965543A true CN110965543A (en) | 2020-04-07 |
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| CN201911242924.1A Pending CN110965543A (en) | 2019-12-06 | 2019-12-06 | Underwater rock block foundation bed automatic control tamping system with hydraulic driving mechanism |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014108735A (en) * | 2012-12-03 | 2014-06-12 | Kajima Corp | Work barge |
| CN104806269A (en) * | 2015-04-08 | 2015-07-29 | 湖南五新重型装备有限公司 | Full-automatic hydraulic walking system of tunnel lining trolley |
| CN206689781U (en) * | 2017-03-27 | 2017-12-01 | 荆州市祥达机械制造有限公司 | A kind of nut finish-milling tooth clamper |
| CN107859023A (en) * | 2017-10-30 | 2018-03-30 | 中交第四航务工程局有限公司 | A kind of underwater block ground mass bed ramming system |
| CN212335979U (en) * | 2019-12-06 | 2021-01-12 | 中交第四航务工程局有限公司 | Underwater rock block foundation bed automatic control tamping system with hydraulic driving mechanism |
-
2019
- 2019-12-06 CN CN201911242924.1A patent/CN110965543A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014108735A (en) * | 2012-12-03 | 2014-06-12 | Kajima Corp | Work barge |
| CN104806269A (en) * | 2015-04-08 | 2015-07-29 | 湖南五新重型装备有限公司 | Full-automatic hydraulic walking system of tunnel lining trolley |
| CN206689781U (en) * | 2017-03-27 | 2017-12-01 | 荆州市祥达机械制造有限公司 | A kind of nut finish-milling tooth clamper |
| CN107859023A (en) * | 2017-10-30 | 2018-03-30 | 中交第四航务工程局有限公司 | A kind of underwater block ground mass bed ramming system |
| CN212335979U (en) * | 2019-12-06 | 2021-01-12 | 中交第四航务工程局有限公司 | Underwater rock block foundation bed automatic control tamping system with hydraulic driving mechanism |
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