CN216916255U - Base with adjustable marine rotary sail - Google Patents
Base with adjustable marine rotary sail Download PDFInfo
- Publication number
- CN216916255U CN216916255U CN202220177373.6U CN202220177373U CN216916255U CN 216916255 U CN216916255 U CN 216916255U CN 202220177373 U CN202220177373 U CN 202220177373U CN 216916255 U CN216916255 U CN 216916255U
- Authority
- CN
- China
- Prior art keywords
- power
- base
- sliding
- top cover
- side wall
- 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.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Transmission Devices (AREA)
Abstract
The utility model discloses an adjustable base of a marine spinning sail, which relates to the technical field of marine spinning sail bases and comprises a base part, wherein a sealing part is arranged on the base part, and the base part is connected with the sealing part through more than two linkage devices. According to the utility model, the linkage device and the power device are arranged to connect the base plate and the top cover, when the top cover needs to be opened, the power transmission device can be started, the power transmission device pushes the sliding plate to slide rightwards in the sliding groove, at the moment, the sliding plate can push the two power rods to move rightwards, at the moment, the right ends of the two power rods can push the top cover to rotate clockwise by taking a hinge, a rotating shaft or other connection modes as an axis, so that the top cover is unfolded, two effects of tilting and erecting can be realized by the rotary sail equipment during working, and the inclination angles of the linkage rods can be adjusted freely by the linkage device and the power device, so that the function of fixing the rotary sail at any inclination angle of 0-90 degrees is realized.
Description
Technical Field
The utility model relates to a base of a rotary sail for a ship, in particular to an adjustable base of a rotary sail for the ship.
Background
The rotary sail is one of the commonly used sails, the consumption of energy is greatly saved by utilizing wind energy, the rotary sail is the premise of rapid development of future society, the rotary sail base for the ship can support the rotary sail, and when the conventional rotary sail base for the ship is used, the base is inconvenient to adjust, so that certain limitation exists in use.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an adjustable base of a marine jib sail, which solves the problem that the base of the prior base of the marine jib sail is inconvenient to adjust when in use, so that certain limitations exist in use.
In order to achieve the purpose, the utility model provides the following technical scheme: a base with an adjustable rotary sail for a ship comprises a base part, wherein a sealing part is arranged on the base part, the base part is connected with the sealing part through more than two linkage devices, a power device is arranged in the base part, and a locking device is arranged between the base part and the sealing part;
the base member comprises a base plate, the middle part of the base plate is provided with an operation hole with proper size and shape for equipment maintenance to pass in and out, the front side wall, the rear side wall and the left side wall of the base plate are fixedly provided with a plurality of lifting devices which are not limited to lug plates and lifting rings and used for lifting, and a plurality of side walls of the base plate are provided with operation doors;
the sealing element comprises a top cover, two lug plates are fixedly arranged at the front end and the rear end of the left side wall of the top cover close to the lower side, positioning columns are fixedly arranged between the two lug plates at the front side and between the two lug plates at the rear side, an access hole with proper size and shape is formed in the middle of the top cover and used for equipment maintenance to pass in and out, and the bottom side of the top cover is connected with the right side of the base plate through a hinge, a rotating shaft or other connection modes;
the linkage device comprises at least two power rods, wherein a lower trepanning is formed in the bottom ends of the two power rods, an upper trepanning is formed in the top ends of the two power rods, and the two upper trepanning are respectively sleeved with two positioning columns on the front side and the rear side one by one.
According to a preferable technical scheme, the power device comprises sliding grooves, the left sides of the two sliding grooves are respectively provided with a power transmission device, the power transmission devices are hydraulic transmission devices or electric transmission devices, the sliding grooves are formed in the middle of the base plate, the front side wall and the rear side wall of each sliding groove are respectively provided with a positioning groove, sliding plates are arranged in the sliding grooves in a sliding mode, the front side and the rear side of each sliding plate are arranged in the positioning grooves in a sliding mode, the sliding plates are fixedly arranged at the moving ends of the power transmission devices, the right side walls of the two sliding plates are respectively provided with a swinging groove, round rods are fixedly arranged in the swinging grooves, and the two round rods are respectively in one-to-one corresponding sleeving connection with lower sleeving holes at the bottom ends of the two power rods.
As a preferred technical scheme of the utility model, the power device comprises at least two power transmission devices which are arranged in the sliding groove in a detachable bolt mode, the linkage device comprises at least two power rods, one end of each power rod is connected with the power transmission device, and the other end of each power rod is connected with the top cover.
As a preferred technical scheme of the present invention, the locking device includes at least two butt-joint grooves, the two butt-joint grooves are respectively formed in the front and rear sides of the left end of the upper surface of the base plate, the two butt-joint grooves are respectively adapted with butt-joint blocks, the two butt-joint blocks are respectively fixedly disposed in the front and rear sides of the top end of the left side wall of the top cover, and the top ends of the two butt-joint blocks are respectively provided with a locking groove.
As a preferred technical scheme of the utility model, a square groove is formed in the left side of the base plate, a pull rod is arranged on the right side of the square groove, and springs are fixedly arranged at the front end and the rear end of the left side wall of the pull rod and fixedly connected with the left side wall of the square groove.
As a preferred technical scheme, the right sides of the front end and the rear end of the square groove are respectively provided with a connecting groove communicated with the two butt-joint grooves, the two butt-joint grooves are respectively internally provided with a clamping block, the left ends of the two clamping blocks respectively penetrate through the two connecting grooves to be fixedly connected with the front end and the rear end of the pull rod, and the upper surfaces of the right sides of the two clamping blocks are respectively provided with an inclined surface.
As a preferable technical scheme of the utility model, the middle part of the left side wall of the pull rod is fixedly provided with a pull block, the middle part of the left side wall of the square groove is provided with a notch, and the pull block is arranged in the notch.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, the linkage device and the power device are arranged to connect the base plate and the top cover, when the top cover needs to be opened, the power transmission device can be started, the power transmission device pushes the sliding plate to slide rightwards in the sliding groove, at the moment, the sliding plate can push the two power rods to move rightwards, at the moment, the right ends of the two power rods can push the top cover to rotate clockwise by taking a hinge, a rotating shaft or other connection modes as an axis, so that the top cover is unfolded, two effects of tilting and erecting can be realized by the rotary sail equipment during working, and the inclination angles of the linkage rods can be adjusted freely by the linkage device and the power device, so that the function of fixing the rotary sail at any inclination angle of 0-90 degrees is realized.
2. According to the utility model, the base member and the sealing member are connected through the locking device, after the top cover is sealed on the upper surface of the base plate, the two butt-joint blocks are clamped into the two butt-joint grooves, the two clamping blocks are clamped into the locking grooves on the two butt-joint blocks, and further after the top cover is closed, the top cover cannot shake greatly due to external force between the top cover and the base plate, so that the stability after the top cover is closed is ensured.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic rear perspective view of the present invention;
FIG. 3 is a perspective view of the skateboard of the present invention;
FIG. 4 is a schematic perspective view of a docking bay according to the present invention;
FIG. 5 is a schematic perspective view of a linkage assembly according to the present invention;
fig. 6 is a schematic perspective view of a drawbar in accordance with the present invention.
In the figure: the device comprises a base member 1, a base plate 11, an operation hole 12, a hoisting device 13, an operation door 14, a sealing member 2, a top cover 21, an ear plate 22, a positioning column 23, a manhole 24, a linkage device 3, a power rod 31, a lower trepanning 32, an upper trepanning 33, a power device 4, a sliding groove 41, a power transmission device 42, a positioning groove 43, a sliding plate 44, a swinging groove 45, a round rod 46, a locking device 5, a butt joint groove 51, a butt joint block 52, a locking groove 53, a square groove 54, a pull rod 55, a connecting groove 56, a clamping block 57, an inclined plane 58, a spring 59, a notch 510 and a pull block 511.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 6, the present invention provides a technical solution: a base with an adjustable rotary sail for a ship comprises a base part 1, wherein a sealing element 2 is arranged on the base part 1, the base part 1 is connected with the sealing element 2 through more than two linkage devices 3, a power device 4 is arranged in the base part 1, and a locking device 5 is arranged between the base part 1 and the sealing element 2;
the base member 1 comprises a base plate 11, an operation hole 12 which is in proper size and shape and used for equipment maintenance access is formed in the middle of the base plate 11, a plurality of lifting devices 13 which are not limited to lug plates and lifting rings and are used for lifting are fixedly arranged on the front side wall, the rear side wall and the left side wall of the base plate 11, the lifting devices 13 adopt the lug plates, the lifting rings and other lifting design forms and can be used for lifting during installation or maintenance of rotary sail equipment, operation doors 14 are arranged on a plurality of side walls of the base plate 11, and the operation doors 14 are used for entering the base plate 11 to perform movable operation;
the sealing element 2 comprises a top cover 21, two lug plates 22 are fixedly arranged at the front end and the rear end of the left side wall of the top cover 21 close to the lower side, positioning columns 23 are fixedly arranged between the two lug plates 22 at the front side and between the two lug plates 22 at the rear side, an access hole 24 which is in proper size and shape and used for equipment maintenance to go in and out is formed in the middle of the top cover 21, the bottom side of the top cover 21 is connected with the right side of the base plate 11 through hinges, rotating shafts or other connecting modes, and the access hole 24 can be used for conveying equipment or an access tool in a rotary cylinder during equipment maintenance in the rotary cylinder;
the linkage device 3 comprises at least two power rods 31, lower trepanning 32 is arranged at the bottom ends of the two power rods 31, upper trepanning 33 is arranged at the top ends of the two power rods 31, and the two upper trepanning 33 are respectively sleeved with the two positioning columns 23 on the front side and the rear side one by one.
The power device 4 comprises sliding grooves 41, the left sides in the two sliding grooves 41 are respectively provided with a power transmission device 42, the power transmission devices 42 are hydraulic transmission devices or electric transmission devices, the sliding grooves 41 are arranged in the middle of the base plate 11, the front side wall and the rear side wall of each sliding groove 41 are respectively provided with a positioning groove 43, the sliding grooves 41 are internally provided with sliding plates 44 in a sliding manner, the front side and the rear side of each sliding plate 44 are arranged in the positioning grooves 43 in a sliding manner, the sliding plates 44 are fixedly arranged at the moving ends of the power transmission devices 42, the right side walls of the two sliding plates 44 are respectively provided with a swinging groove 45, round rods 46 are fixedly arranged in the swinging grooves 45, the two round rods 46 are respectively sleeved with the lower sleeve holes 32 at the bottom ends of the two power rods 31 in a one-to-one correspondence manner, when the top cover 21 needs to be opened, the power transmission devices 42 can be started, the power transmission devices 42 push the sliding plates 44 to slide rightwards in the sliding grooves 41, at the moment, the sliding plates 44 can push the two power rods 31 to move rightwards, the right-hand member of two power bars 21 can promote top cap 21 and use the hinge, pivot or other forms's connected mode is axle center clockwise rotation, and then realize launching top cap 21, the during operation can empty and upright two kinds of effects through this rotary sail equipment, and the inclination of gangbar can be adjusted wantonly to aggregate unit and power device, and then realize fixing rotary sail at 0 to 90 arbitrary inclination's function, the extension distance of end is removed through control power transmission 42 this moment, to the inclination control of two power bars 31, and then realize promoting top cap 21 to incline at 0 to 90 arbitrary inclination.
The power device 4 comprises at least two power transmission devices 42 which are arranged in the sliding groove 41 in a detachable bolt mode, the linkage device 3 comprises at least two power rods 31, one end of each power rod 31 is connected with the power transmission device 42, and the other end of each power rod 31 is connected with the top cover 21.
The connecting groove 56 and the two butt-joint grooves 51 are formed in the right sides of the front end and the rear end of the square groove 54, clamping blocks 57 are arranged in the two butt-joint grooves 51, the left ends of the two clamping blocks 57 penetrate through the two connecting grooves 56 respectively and are fixedly connected with the front end and the rear end of the pull rod 55, and inclined surfaces 58 are arranged on the upper surfaces of the right sides of the two clamping blocks 57.
A pull block 511 is fixedly arranged in the middle of the left side wall of the pull rod 55, a notch 510 is formed in the middle of the left side wall of the square groove 54, the pull block 511 is arranged in the notch 510, after the top cover 21 and the base plate 11 are closed, the two butt-joint blocks 52 on the top cover 21 can slide into the two butt-joint grooves 51, and when the butt-joint blocks 52 slide into the butt-joint grooves 51, the two butt-joint blocks 52 extrude the two clamping blocks 57 through the inclined surfaces 58, the two clamping blocks 57 can extrude into the connecting groove 56 and the square groove 54, after the butt-joint blocks 52 completely enter the butt-joint grooves 51, under the pushing of the spring 59, the pull rod 55 moves rightwards to reset, the two clamping blocks 57 can be pushed to slide rightwards in the connecting groove 56 and clamped into the locking grooves 53 on the 4 butt-joint blocks 52, so as to lock the butt-joint blocks 52 in the butt-joint grooves 51, so as to fix the top cover 21 on the upper surface of the base plate 11, and when the top cover 21 needs to be opened later, the pull rod 55 can be driven to move leftwards in the square groove 54 by swinging the pull block 511 in the notch 510 leftwards, the two clamping blocks 57 are driven to be separated from the two locking grooves 53, and the top cover 51 can be normally unfolded.
The method comprises the following operation steps:
when the top cover 21 needs to be opened, the power transmission device 42 can be started, the power transmission device 42 pushes the sliding plate 44 to slide rightwards in the sliding groove 41, at the moment, the sliding plate 44 can push the two power rods 31 to move rightwards, the right ends of the two power rods 21 can push the top cover 21 to rotate clockwise by taking a hinge, a rotating shaft or other connection modes as an axis, and further the top cover 21 is unfolded, two effects of dumping and erecting can be performed through the rotary sail device during working, the inclination angles of the linkage rods can be adjusted at will through the linkage device and the power device, further the rotary sail can be fixed at any inclination angle from 0 degree to 90 degrees, at the moment, the inclination angles of the two power rods 31 are controlled by controlling the extension distance of the moving end of the power transmission device 42, further the top cover 21 is pushed to any inclination angle from 0 degree to 90 degrees, when the moving end of the power transmission device 42 is completely contracted, at this time, the two power rods 31 can be completely accommodated in the sliding groove 41, and simultaneously the two butt-joint blocks 52 on the top cover 21 can slide into the two butt-joint grooves 51, and when the butt-joint blocks 52 slide into the butt-joint grooves 51, the two butt-joint blocks 52 press the two fixture blocks 57 through the inclined surfaces 58, and press the two fixture blocks 57 into the connecting groove 56 and the square groove 54, when the butt-joint blocks 52 completely enter the butt-joint grooves 51, the pull rod 55 is moved to the right to reset under the pushing of the spring 59, and the two fixture blocks 57 are pushed to slide to the right in the connecting groove 56, and are clamped into the locking grooves 53 on the butt-joint blocks 52 4, so as to lock the butt-joint blocks 52 in the butt-joint grooves 51, so as to fix the top cover 21 on the upper surface of the base plate 11, and when the top cover 21 needs to be opened at a later stage, the pull rod 55 can be driven to move to the left in the square groove 54 by swinging the pull block 511 in the notch 510 to drive the two fixture blocks 57 to separate from the two locking grooves 53, thereby enabling the top cover 51 to be normally unfolded.
In the description of the present invention, it is to be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings and are only for convenience in describing the present invention and simplifying the description, but are not intended to indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.
In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly attached, detachably attached, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A base with adjustable marine rotary sail, includes base member (1), its characterized in that: the sealing device is characterized in that a sealing element (2) is arranged on the base member (1), the base member (1) is connected with the sealing element (2) through more than two linkage devices (3), a power device (4) is arranged in the base member (1), and a locking device (5) is arranged between the base member (1) and the sealing element (2);
the base member (1) comprises a base plate (11), an operation hole (12) which is in a proper size and shape and used for equipment maintenance to pass in and out is formed in the middle of the base plate (11), a plurality of lifting devices (13) which are not limited to lug plates and lifting rings and are used for lifting are fixedly arranged on the front side wall, the rear side wall and the left side wall of the base plate (11), and operation doors (14) are arranged on the plurality of side walls of the base plate (11);
the sealing element (2) comprises a top cover (21), two lug plates (22) are fixedly arranged at the front end and the rear end of the left side wall of the top cover (21) close to the lower side, positioning columns (23) are fixedly arranged between the two lug plates (22) at the front side and between the two lug plates (22) at the rear side, an access hole (24) which is in a proper size and shape and used for equipment maintenance access is formed in the middle of the top cover (21), and the bottom side of the top cover (21) is connected with the right side of the base plate (11) in a hinge, rotating shaft or other connection mode;
linkage (3) include two at least power pole (31), two lower trepanning (32) have been seted up to the bottom of power pole (31), two trepanning (33) have been seted up on the top of power pole (31), and two trepanning (33) cup joint one by one with two reference column (23) of front and back side respectively.
2. The adjustable base of claim 1, further comprising: the power device (4) comprises sliding grooves (41), the left sides in the two sliding grooves (41) are respectively provided with a power transmission device (42), the power transmission device (42) is a hydraulic transmission device or an electric transmission device, the sliding groove (41) is arranged in the middle of the base plate (11), positioning grooves (43) are respectively arranged on the front side wall and the rear side wall of the sliding groove (41), a sliding plate (44) is arranged in the sliding groove (41) in a sliding manner, the front side and the rear side of the sliding plates (44) are arranged in the positioning grooves (43) in a sliding manner, the sliding plates (44) are fixedly arranged at the moving end of the power transmission device (42), the right side walls of the two sliding plates (44) are both provided with swinging grooves (45), round rods (46) are fixedly arranged in the swinging grooves (45), and the two round rods (46) are respectively sleeved with the lower sleeve holes (32) at the bottom ends of the two power rods (31) in a one-to-one correspondence manner.
3. The adjustable base of claim 2, further comprising: the power device (4) comprises at least two power transmission devices (42) which are arranged in a sliding groove (41), the installation mode is the detachable bolt installation mode, the linkage device (3) comprises at least two power rods (31), one end of each power rod (31) is connected with the corresponding power transmission device (42), and the other end of each power rod (31) is connected with the top cover (21).
4. The adjustable base of claim 3, further comprising: locking device (5) are including two at least butt joint groove (51), two the side is seted up respectively around the upper surface left end of bed plate (11) to butt joint groove (51), and two equal adaptations in butt joint groove (51) have butt joint piece (52), two butt joint piece (52) are fixed respectively and are set up side, two around the left side wall top of top cap (21) the top of butt joint piece (52) has all seted up locking groove (53).
5. The adjustable base of claim 4, further comprising: square groove (54) have been seted up to the left side in bed plate (11), the right side is provided with pull rod (55) in square groove (54), the left side wall fixed connection who is provided with spring (59) and square groove (54) is all fixed to the left side wall front and back end of pull rod (55).
6. The adjustable base of claim 5, further comprising: the front and rear ends of the square groove (54) are respectively provided with a connecting groove (56) communicated with the two butt joint grooves (51), the two butt joint grooves (51) are internally provided with clamping blocks (57), the left ends of the two clamping blocks (57) respectively penetrate through the two connecting grooves (56) and are fixedly connected with the front and rear ends of the pull rod (55), and the right upper surfaces of the two clamping blocks (57) are respectively provided with an inclined surface (58).
7. The adjustable base of claim 6, further comprising: the middle part of the left side wall of the pull rod (55) is fixedly provided with a pull block (511), the middle part of the left side wall of the square groove (54) is provided with a notch (510), and the pull block (511) is arranged in the notch (510).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220177373.6U CN216916255U (en) | 2022-01-24 | 2022-01-24 | Base with adjustable marine rotary sail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220177373.6U CN216916255U (en) | 2022-01-24 | 2022-01-24 | Base with adjustable marine rotary sail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216916255U true CN216916255U (en) | 2022-07-08 |
Family
ID=82263589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220177373.6U Active CN216916255U (en) | 2022-01-24 | 2022-01-24 | Base with adjustable marine rotary sail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216916255U (en) |
-
2022
- 2022-01-24 CN CN202220177373.6U patent/CN216916255U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211621306U (en) | Novel warning for movable building site device | |
| CN216916255U (en) | Base with adjustable marine rotary sail | |
| CN116513429A (en) | Base with adjustable marine rotary barrel sail | |
| CN214527795U (en) | Detachable tower crane steel structure platform | |
| CN214125043U (en) | Material lifting device for construction convenient to operation | |
| CN212507664U (en) | Anti-toppling type electric power transmission device | |
| CN212292596U (en) | Rotation limiter of tower crane | |
| CN211599985U (en) | Parking area watch-dog adjusting device | |
| CN210021887U (en) | Paint production is with automatic discharge paint mixing equipment | |
| CN112093652A (en) | Concrete pipe lifting appliance and lifting method thereof | |
| CN218204305U (en) | Compaction device for building engineering | |
| CN212044560U (en) | Turnover pedal | |
| CN114976912B (en) | Intelligent power transmission and distribution cabinet with fixing structure | |
| CN212810558U (en) | Portable mobile communication antenna | |
| CN212403312U (en) | Portable lifting device for electric power engineering | |
| CN214732785U (en) | Stacking device for producing cement soil pile foundation | |
| CN219926044U (en) | Traveling base for palletizing robot | |
| CN218758288U (en) | Secondary structure constructional column exempts from formwork device | |
| CN212271696U (en) | Auxiliary supporting structure for construction engineering construction | |
| CN220926029U (en) | Precast box culvert hoist device | |
| CN210025125U (en) | Laborsaving instrument of dismouting cable trench apron | |
| CN215484668U (en) | Butt joint device is consolidated to construction template | |
| CN216756074U (en) | A even device is beaten to portable wall paint for interior architectural decoration engineering | |
| CN216075085U (en) | Reinforcing device for highway bridge pile foundation | |
| CN117533938B (en) | Prefabricated wallboard component overhead hoist |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |