CN116513974B - Span-adjustable gantry crane - Google Patents
Span-adjustable gantry crane Download PDFInfo
- Publication number
- CN116513974B CN116513974B CN202310799006.9A CN202310799006A CN116513974B CN 116513974 B CN116513974 B CN 116513974B CN 202310799006 A CN202310799006 A CN 202310799006A CN 116513974 B CN116513974 B CN 116513974B
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- Prior art keywords
- frame
- assembly
- driving
- driving piece
- limiting
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- 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.)
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- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C11/00—Trolleys or crabs, e.g. operating above runways
- B66C11/02—Trolleys or crabs, e.g. operating above runways with operating gear or operator's cabin suspended, or laterally offset, from runway or track
- B66C11/04—Underhung trolleys
- B66C11/06—Underhung trolleys running on monorails
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C5/00—Base supporting structures with legs
- B66C5/02—Fixed or travelling bridges or gantries, i.e. elongated structures of inverted L or of inverted U shape or tripods
- B66C5/04—Fixed or travelling bridges or gantries, i.e. elongated structures of inverted L or of inverted U shape or tripods with runways or tracks supported for movements relative to bridge or gantry
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/08—Runners; Runner bearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/14—Trolley or crane travel drives
-
- 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
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
Abstract
The application relates to the field of cranes, and particularly discloses a span-adjustable portal crane, which comprises: a track frame; the limiting underframe assembly is connected with the track frame; the connecting portal frame assembly is connected with the limiting underframe assembly; the top frame assembly is connected with the connecting door frame assembly; the driving adjusting device is connected with the top frame assembly; the hoisting device is connected with the driving adjusting device; wherein, spacing chassis subassembly includes: the wheel carrier assembly is connected with the track frame; the device can drive the two sides to be connected with the portal assembly for span adjustment under the drive of the top frame assembly, and then is matched with the drive adjusting device and the hoisting lifting device, so that the application range and the transportation efficiency of the lifting equipment can be enlarged.
Description
Technical Field
The application relates to the crane industry, in particular to a span-adjustable portal crane.
Background
Gantry cranes are a variant of bridge cranes, also called gantry cranes. The device is mainly used for loading and unloading operations of outdoor goods yards, stock yards and bulk cargoes. The portal crane has the characteristics of high field utilization rate, large operation range, wide application range, strong universality and the like, and is widely used in port cargo yards.
Most spans of existing portal cranes are fixed, and therefore when different specifications of cargoes are transported in a lifting mode, the using range and the cargo transportation efficiency of the crane are limited, and in order to solve the problem, development of the portal crane with the adjustable span is needed.
Disclosure of Invention
The application aims to provide a span-adjustable portal crane so as to solve the problems in the background technology.
In order to achieve the above purpose, the present application provides the following technical solutions:
a span-adjustable gantry crane, comprising:
a track frame;
the limiting underframe assembly is connected with the track frame;
the connecting portal frame assembly is connected with the limiting underframe assembly;
the top frame assembly is connected with the connecting door frame assembly;
the driving adjusting device is connected with the top frame assembly;
the hoisting lifting device is connected with the driving adjusting device and is used for being matched with the driving adjusting device to finish hoisting lifting;
wherein, spacing chassis subassembly includes:
the wheel carrier assembly is connected with the track frame;
and the positioning locking assembly is connected with the wheel frame assembly and used for connecting the locking fixation of the portal frame assembly.
Compared with the prior art, the application has the beneficial effects that: this device reasonable in design, under the drive of roof-rack subassembly, can drive both sides and connect the portal subassembly and carry out span adjustment, and the cooperation drives adjusting device and hoist and mount hoisting apparatus again can enlarge lifting apparatus's application range and conveying efficiency, has improved current lifting apparatus's not enough, has higher practicality and market prospect, is fit for using widely on a large scale.
Drawings
Fig. 1 is a schematic structural diagram of a span-adjustable gantry crane according to an embodiment of the present application.
Fig. 2 is a schematic structural view of a limiting frame in a span-adjustable gantry crane according to an embodiment of the present application.
Fig. 3 is a schematic view of a partial structure at a in fig. 1.
Fig. 4 is a schematic structural view of an adjusting trough frame in a span-adjustable gantry crane according to an embodiment of the present application.
In the figure: the device comprises a 1-track frame, a 2-limiting underframe component, a 3-wheel frame component, a 4-positioning locking component, a 5-connecting portal frame component, a 6-top frame component, a 7-driving adjusting device, an 8-hoisting lifting device, 301-first driving parts, 302-underframe, 303-limiting frames, 304-first limiting grooves, 305-second limiting grooves, 401-fixing frames, 402-positioning inserting rods, 403-second driving parts, 501-first connecting frames, 502-portal frames, 503-second connecting frames, 504-positioning inserting plates, 601-top frames, 602-bidirectional telescopic frames, 603-limiting grooves, 604-third driving parts, 605-driving frames, 701-adjusting grooves, 702-third limiting grooves, 703-fourth limiting grooves, 704-fourth driving parts, 705-fifth driving parts, 801-connecting ropes, 802-sixth driving parts, 803-clamping frames and 804-frames.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In one embodiment of the present application, as shown in fig. 1, a span-adjustable gantry crane includes: a track frame 1; the limiting underframe assembly 2 is connected with the track frame 1; the connecting portal frame assembly 5 is connected with the limiting underframe assembly 2; a top frame assembly 6, the top frame assembly 6 being connected to the connection mast assembly 5; a drive adjustment device 7, the drive adjustment device 7 being connected to the top frame assembly 6; the hoisting device 8 is connected with the driving and adjusting device 7 and is used for being matched with the driving and adjusting device 7 to finish hoisting; wherein, spacing chassis subassembly 2 includes: the wheel carrier assembly 3 is connected with the track frame 1; and the positioning locking assembly 4 is connected with the wheel frame assembly 3 and is used for locking and fixing the connecting portal frame assembly 5.
In one embodiment of the application:
as shown in fig. 1 and 2, the wheel carrier assembly 3 includes: a plurality of first driving members 301, wherein the first driving members 301 are connected with the track frame 1; the first driving member 301 is an electric wheel frame; a chassis 302, the chassis 302 being connected to the first driving member 301; a limiting frame 303, wherein the limiting frame 303 is connected with the underframe 302; the first limiting groove 304 is formed in the limiting frame 303; a second limiting groove 305, wherein the second limiting groove 305 is arranged inside the limiting frame 303;
under the drive of a plurality of first driving piece 301 in both sides, can drive chassis 302 and top component and remove, according to the hoist and mount cargo specification that needs, adjust the relative distance of both sides connection portal subassembly 5 through roof-rack subassembly 6, after the regulation is accomplished, carry out spacing locking to connection portal subassembly 5 through location locking subassembly 4, cooperate with hoist and mount hoisting apparatus 8 through drive adjusting device 7, hoist and mount the cargo of treating, under the drive of drive adjusting device 7 and wheel carrier subassembly 3, remove the cargo of hoist and mount completion to the settlement position.
In one embodiment of the application:
as shown in fig. 1, the positioning locking assembly 4 includes: the fixing frame 401, wherein the fixing frame 401 is connected with the limiting frame 303; the positioning inserting rod 402 is movably connected with the fixing frame 401 in an inserting way; the second driving piece 403, the second driving piece 403 penetrates through the fixing frame 401 and is connected with the positioning inserting rod 402; the second driving member 403 is an electric telescopic rod;
when the two-side connecting portal frame assembly 5 is adjusted through the top frame assembly 6, the bottom side of the connecting portal frame assembly 5 is slidably adjusted in the limiting frame 303, after the adjustment is completed, the positioning inserting rod 402 is driven to longitudinally move and adjust in the fixing frame 401 under the driving of the second driving piece 403, the positioning inserting rod 402 is inserted into the connecting portal frame assembly 5, positioning locking of the connecting portal frame assembly 5 is completed, and the connecting stability of the connecting portal frame assembly 5 is further improved;
in the present application, the second driving member 403 is not limited to an electric telescopic rod, and a linear motor, an electric cylinder, or a cylinder driving may be used, so long as the movement adjustment of the positioning plunger 402 can be achieved, and the present application is not limited thereto.
In one embodiment of the application:
as shown in fig. 1, the connecting gantry assembly 5 includes: the first connecting frame 501 is slidably connected with the first limiting groove 304; a door frame 502, wherein the door frame 502 is connected with the first connecting frame 501, and penetrates through the second limiting groove 305 to be in sliding contact with the underframe 302; a second connecting frame 503, wherein the second connecting frame 503 is connected with one end of the gantry 502 away from the first connecting frame 501; a positioning plugboard 504, wherein the positioning plugboard 504 is connected with the portal 502;
under the drive of roof-rack subassembly 6, can drive both sides portal 502 level adjustment, when both sides portal 502 level adjustment, first link 501 can be followed the spacing slip of first spacing groove 304, and second link 503 can be followed the spacing slip of roof-rack subassembly 6 inside, further improves the regulation stability of portal 502, is provided with a plurality of positioning slot (not shown in the figure) in first link 501 inside, after the both sides portal 502 position is confirmed, the second driving piece 403 drives positioning inserted bar 402 and moves down, inserts the inside positioning slot of corresponding position, accomplishes the fixed locking to first link 501 and portal 502.
In one embodiment of the application:
as shown in fig. 1, the top frame assembly 6 includes: the top frame 601, wherein the top frame 601 is slidably connected with the second connecting frame 503, and is movably connected with the door frame 502 in a sleeved manner; a bi-directional expansion bracket 602, wherein the bi-directional expansion bracket 602 is connected with the top frame 601; the limiting groove frame 603 is fixedly connected with the top frame 601 and is sleeved and movably connected with the positioning plugboard 504; a third driving member 604, wherein the third driving member 604 is connected with the bidirectional expansion bracket 602; the third driving member 604 is an electric telescopic rod; at least two driving frames 605, one end of the driving frame 605 is movably connected with the third driving piece 604, and the other end is movably connected with the door frame 502;
a through groove (not shown in the figure) is formed in the middle of the top frame 601 for moving and communicating the door frames 502, when the third driving piece 604 is contracted and matched with the two side driving frames 605, the top frame 601 moves horizontally to drive the two side door frames 502 to move and adjust back, and when the third driving piece 604 is lifted and matched with the two side driving frames 605, the top frame 601 moves horizontally to drive the two side door frames 502 to move and adjust back to back;
in the present application, the third driving member 604 is not limited to an electric telescopic rod, and a linear motor, an electric cylinder, or a cylinder driving device may be used, so long as the third driving member can cooperate with the transmission frame 605 to achieve the horizontal adjustment of the top frame 601, which is not specifically limited herein.
In one embodiment of the application:
as shown in fig. 1 and 4, the drive adjustment device 7 includes: an adjusting tank frame 701, wherein the adjusting tank frame 701 is connected with the two side top frames 601; a third limiting groove 702, wherein the third limiting groove 702 is arranged inside the adjusting groove frame 701; a fourth limiting groove 703, wherein the fourth limiting groove 703 is disposed inside the adjusting groove frame 701; the fourth driving piece 704, wherein the fourth driving piece 704 is in sleeved sliding connection with the adjusting groove frame 701 and is in sliding connection with the third limiting groove 702 and the fourth limiting groove 703; the fourth driving member 704 is an electric sliding seat; a fifth drive member 705, said fifth drive member 705 being connected to a fourth drive member 704; the fifth driving piece 705 is a chain driving machine;
the fifth driving piece 705 drives the hoisting device 8 to adjust the longitudinal height, then the hoisting device 8 is used for fixing the goods, then the fifth driving piece 705 is used for adjusting the longitudinal height of the goods, and the fourth driving piece 704 is used for adjusting the horizontal position of the goods.
In one embodiment of the application:
as shown in fig. 1 and 3, the hoisting device 8 includes: a connecting rope 801, the connecting rope 801 being connected to a fifth driving member 705; a sixth driving member 802, wherein the sixth driving member 802 is connected to an end of the connecting rope 801 away from the fifth driving member 705; the sixth driving member 802 is an electric telescopic rod; at least two clamping frames 803, wherein the clamping frames 803 are movably connected with one end of the sixth driving piece 802 far away from the connecting rope 801; a linkage frame 804, wherein one end of the linkage frame 804 is connected with the sixth driving member 802, and the other end is movably connected with the clamping frame 803;
after the clamping frame 803 is adjusted to the periphery of the goods to be hoisted through the connecting rope 801, the clamping connection to the position of the goods fixing buckle can be completed through the clamping frame 803 which can be adjusted in an opening and closing mode, when the sixth driving piece 802 operates, the two side linkage frames 804 can be matched, the two side clamping frames 803 can be driven to be adjusted in an opening and closing mode, further the clamping fixation to the goods fixing buckle can be completed, and after the fixation is completed, the goods can be longitudinally or horizontally moved and transported.
The working principle of the application is as follows: during the use, the goods to be hoisted and lifted are placed in the middle parts of two sides of the portal 502, the fixed connection of the goods is completed through the driving adjusting device 7 and the hoisting and lifting device 8, under the driving of a plurality of first driving pieces 301 on two sides, the underframe 302 and the top component thereof can be driven to move, according to the specification of the goods to be hoisted and lifted, the relative distance between the two sides of the connecting portal component 5 is adjusted through the top frame component 6, after the adjustment is completed, the connecting portal component 5 is limited and locked through the positioning and locking component 4, the goods to be hoisted are hoisted through the matching of the driving adjusting device 7 and the hoisting and lifting device 8, the hoisted goods are moved to the set position under the driving of the driving adjusting device 7 and the wheel frame component 3, when the two sides of the connecting portal component 5 are adjusted through the top frame component 6, the bottom side of the connecting portal component 5 is slidingly adjusted in the limiting frame 303, after the adjustment is completed, the positioning inserting rod 402 is driven to longitudinally move and adjust in the fixing frame 401 by the driving of the second driving member 403, the positioning inserting rod 402 is inserted into the connecting portal frame assembly 5 to complete the positioning locking of the connecting portal frame assembly 5, the connection stability of the connecting portal frame assembly 5 is further improved, the second driving member 403 is not limited to an electric telescopic rod device, and can also adopt a linear motor, an electric cylinder or an air cylinder driving or the like, so long as the movement adjustment of the positioning inserting rod 402 can be realized, the specific limitation is not made herein, the two side portal frames 502 can be driven to horizontally adjust by the driving of the top frame assembly 6, when the two side portal frames 502 horizontally adjust, the first connecting frame 501 can slide along the first limiting groove 304 in a limiting manner, the second connecting frame 503 slide along the inner portion of the top frame assembly 6 in a limiting manner, and the adjustment stability of the portal frames 502 is further improved, a plurality of positioning slots (not shown) are formed in the first connecting frame 501, and after the positions of the two side door frames 502 are determined, the second driving piece 403 drives the positioning inserting rod 402 to move downwards, and inserts into the positioning slots in the corresponding positions, so that the first connecting frame 501 and the door frames 502 are fixed and locked;
the middle part of the top frame 601 is provided with a through groove (not shown in the figure) for moving and communicating the portal 502, when the third driving piece 604 contracts and is matched with the two side transmission frames 605, the top frame 601 horizontally moves and can drive the two side portal 502 to move and adjust, when the third driving piece 604 is lifted and is matched with the two side transmission frames 605, the top frame 601 horizontally moves and can drive the two side portal 502 to move and adjust, the third driving piece 604 is not limited to an electric telescopic rod device, a linear motor, an electric cylinder or an air cylinder can be adopted for driving, and the like, so long as the horizontal adjustment of the top frame 601 can be realized by matching with the transmission frame 605, the vertical height adjustment can be realized by driving the hoisting lifting device 8 without specific limitation, then the cargo is fixed by the lifting device 8, then the vertical height adjustment of the cargo is carried out by the fifth driving piece 705, the horizontal position adjustment can be carried out by the fourth driving piece 704, after the clamping frame is adjusted to the periphery of the cargo through the connecting rope 801, the clamping frame 802 of the position of the fixed cargo can be completed by the clamping frame 803 of the opening and closing adjustment, the clamping frame 803 can be opened and closed, the cargo can be clamped and the cargo can be further moved and fixed by the opening and closing the clamping frame 803 can be further moved, and the cargo can be fixed and fixed.
To sum up, this device can drive both sides and connect portal subassembly 5 under the drive of roof-rack subassembly 6 and carry out span adjustment, and the drive adjusting device 7 and hoist and mount hoisting apparatus 8 of cooperation again can enlarge lifting device's application range and conveying efficiency, has improved current lifting device's not enough, has higher practicality and market prospect, is fit for using widely on a large scale.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (1)
1. A span-adjustable gantry crane, comprising:
a track frame;
the limiting underframe assembly is connected with the track frame;
the connecting portal frame assembly is connected with the limiting underframe assembly;
the top frame assembly is connected with the connecting door frame assembly;
the driving adjusting device is connected with the top frame assembly;
the hoisting lifting device is connected with the driving adjusting device and is used for being matched with the driving adjusting device to finish hoisting lifting;
wherein, spacing chassis subassembly includes:
the wheel carrier assembly is connected with the track frame;
the positioning locking assembly is connected with the wheel frame assembly and used for connecting locking and fixing of the portal frame assembly;
the wheel carriage assembly includes:
the first driving pieces are connected with the track frame;
the underframe is connected with the first driving piece;
the limiting frame is connected with the underframe;
the first limiting groove is arranged in the limiting frame;
the second limiting groove is arranged in the limiting frame;
the positioning and locking assembly comprises:
the fixing frame is connected with the limiting frame;
the positioning inserting rod is movably connected with the fixing frame in an inserting way;
the second driving piece penetrates through the fixing frame and is connected with the positioning inserting rod; the second driving piece is an electric telescopic rod;
the connection portal assembly includes:
the first connecting frame is connected with the first limiting groove in a sliding manner;
the door frame is connected with the first connecting frame, penetrates through the second limiting groove and is in sliding abutting connection with the underframe;
the second connecting frame is connected with one end of the door frame far away from the first connecting frame;
the positioning plugboard is connected with the door frame;
the roof rack assembly includes:
the top frame is connected with the second connecting frame in a sliding way and is movably connected with the door frame in a sleeved mode;
the bidirectional expansion bracket is connected with the top frame;
the limiting groove frame is fixedly connected with the top frame and is movably connected with the positioning plugboard in a sleeved mode;
the third driving piece is connected with the bidirectional expansion bracket;
one end of the transmission frame is movably connected with the third driving piece, and the other end of the transmission frame is movably connected with the door frame;
the drive adjustment device includes:
the adjusting groove frames are connected with the top frames at the two sides;
the third limiting groove is arranged in the adjusting groove frame;
the fourth limiting groove is arranged in the adjusting groove frame;
the fourth driving piece is sleeved with the adjusting groove frame, is connected with the third limiting groove and the fourth limiting groove in a sliding manner;
the fifth driving piece is connected with the fourth driving piece;
the hoisting device comprises:
a connecting rope connected to the fifth driving member;
the sixth driving piece is connected with one end of the connecting rope, which is far away from the fifth driving piece;
the clamping frames are movably connected with one end, far away from the connecting rope, of the sixth driving piece;
and one end of the linkage frame is connected with the sixth driving piece, and the other end of the linkage frame is movably connected with the clamping frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310799006.9A CN116513974B (en) | 2023-07-03 | 2023-07-03 | Span-adjustable gantry crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310799006.9A CN116513974B (en) | 2023-07-03 | 2023-07-03 | Span-adjustable gantry crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116513974A CN116513974A (en) | 2023-08-01 |
| CN116513974B true CN116513974B (en) | 2023-09-22 |
Family
ID=87401506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310799006.9A Active CN116513974B (en) | 2023-07-03 | 2023-07-03 | Span-adjustable gantry crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116513974B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116835455B (en) * | 2023-09-04 | 2024-01-19 | 河南省中原矿山设备有限公司 | Barrier-free hoisting device for farmland erection electric power iron tower |
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| CN217297041U (en) * | 2022-03-31 | 2022-08-26 | 河南科欧矿山起重机械有限公司 | Gantry crane |
| CN218204022U (en) * | 2022-09-29 | 2023-01-03 | 北京深华科交通工程有限公司 | Traffic portal with wind resistance |
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2023
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2445043A1 (en) * | 2003-10-09 | 2005-04-09 | Corven Healthcare, Inc. | Adjustable support frame |
| CA2853144A1 (en) * | 2013-06-03 | 2014-12-03 | Masafumi Nakamura | Jib attachment/detachment mechanism |
| CN208327151U (en) * | 2018-06-04 | 2019-01-04 | 中交三航局第二工程有限公司 | A kind of ship lock large size template installing and dismounting Combined manual portal frame system |
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| CN210286538U (en) * | 2019-08-29 | 2020-04-10 | 中鹏联合重工集团有限公司 | Bridge type double-beam crane |
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| CN218204022U (en) * | 2022-09-29 | 2023-01-03 | 北京深华科交通工程有限公司 | Traffic portal with wind resistance |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116513974A (en) | 2023-08-01 |
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