CN116374817A - Crane lifting device capable of stably lifting - Google Patents
Crane lifting device capable of stably lifting Download PDFInfo
- Publication number
- CN116374817A CN116374817A CN202310620204.4A CN202310620204A CN116374817A CN 116374817 A CN116374817 A CN 116374817A CN 202310620204 A CN202310620204 A CN 202310620204A CN 116374817 A CN116374817 A CN 116374817A
- Authority
- CN
- China
- Prior art keywords
- lifting
- sleeve
- mounting frame
- trolley
- connecting plate
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000010030 laminating Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/06—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Leg Units, Guards, And Driving Tracks Of Cranes (AREA)
Abstract
The invention discloses a crane lifting device for stable lifting, which comprises end beams, wherein a main beam is arranged between the end beams, a lifting trolley is operated on the main beam, a lifting appliance is arranged below the lifting trolley, the lifting appliance comprises a mounting frame, and the bottom of the mounting frame is fixedly connected with a lifting hook; a telescopic column is arranged between the mounting frame and the main beam, a guide rail is arranged at the bottom of the main beam, travelling wheels are arranged at the top of the telescopic column, and the travelling wheels move along the guide rail; the telescopic column comprises a plurality of concentrically arranged sleeves, the top of the sleeve at the outermost side is fixedly connected with an upper connecting plate, the bottom of the sleeve at the innermost side is fixedly connected with a lower connecting plate, and the lower connecting plate is fixedly connected at the top of the mounting frame; limiting rings are arranged at the top and the bottom of the inner wall of the sleeve, and an upper limiting block, a roller and a lower limiting block are arranged at the top of the outer wall of the sleeve; the lifting device is simple in structure and convenient to use, does not increase the load of the lifting trolley, and can play a good role in stable lifting of the large-span lifting appliance.
Description
Technical Field
The invention relates to the technical field of lifting equipment, in particular to a crane lifting device capable of stably lifting.
Background
The crane is a multi-action hoisting machine for vertically hoisting and horizontally carrying heavy objects in a certain range, the vertical hoisting adopts a mode of a reel and a steel wire rope matched with a lifting tool, but because the steel wire rope is of a flexible structure, the lifting tool is easy to swing when the crane lifts loads, loading and unloading operations cannot be carried out when the lifting tool swings, the swinging is manually eliminated, the operation is not easy to operate, long working time can be delayed, the working efficiency is affected, and the safety of workers and lifting equipment can be even endangered due to serious swinging. The patent with publication number CN211769838U discloses a stable lifting structure, but the structure is arranged between a lifting trolley and a lifting appliance, so that the load of the lifting trolley is increased, the inertia of the lifting trolley is increased, and the operation precision is affected; in addition, in the structural form, the telescopic rod can only be arranged at the center of the lifting appliance, and the stabilizing effect is not obvious for some lifting appliances with longer lengths.
Disclosure of Invention
The invention aims to provide a lifting device of a crane for stable lifting, which has the advantages of simple structure, convenient use, no increase of load of a trolley and good stable lifting effect on a large-span lifting appliance.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the utility model provides a hoist hoisting device of stable promotion, including two end beams, install two girders between two end beams, be provided with a dolly track on every girder, the operation has the dolly on two dollies tracks, be provided with two reels on the dolly, the below of dolly is provided with the hoist, the hoist includes the mounting bracket, the setting direction of mounting bracket is the same with the setting direction of end beam, the bottom fixedly connected with lifting hook of mounting bracket, the both sides at mounting bracket top are provided with movable pulley block respectively, be provided with the fixed pulley block with movable pulley block assorted on the dolly, every reel corresponds a movable pulley block and a fixed pulley block, wire rope on the reel bypasses corresponding movable pulley block and fixed pulley block and then fixes on the dolly; the two sides of the top of the mounting frame are also provided with telescopic columns, the telescopic columns are vertically arranged between the mounting frame and the main beam, the bottom of the main beam is provided with a guide rail, the top of the telescopic columns is provided with travelling wheels, and the travelling wheels move along the guide rail; the telescopic column comprises a plurality of concentrically arranged sleeves, the diameter of the sleeves is gradually reduced from outside to inside, the top of the sleeve at the outermost side is fixedly connected with an upper connecting plate, the travelling wheels are arranged at the top of the upper connecting plate, the bottom of the sleeve at the innermost side is fixedly connected with a lower connecting plate, and the lower connecting plate is fixedly connected at the top of the mounting frame; limiting rings are arranged at the top and the bottom of the inner wall of the sleeve, an upper limiting block, a roller and a lower limiting block are arranged at the top of the outer wall of the sleeve, the roller is arranged between the upper limiting block and the lower limiting block, and the roller moves in the vertical direction along the inner wall of the adjacent sleeve; when the sleeve is completely contracted, the limiting rings are attached to the adjacent sleeves, and the upper limiting block is attached to the limiting rings at the top.
Optionally, the sleeve on the outermost side is called a first sleeve, a pressure sensor is arranged at the bottom of a limiting ring at the top of the first sleeve, a pressure sensor is also arranged at the top of a limiting ring at the bottom of the first sleeve, and the pressure sensor, the upper limiting block and the lower limiting block are arranged in the same vertical direction.
Optionally, the guide rail is an I-shaped rail, two mounting plates are oppositely arranged at the top of the upper connecting plate, the travelling wheels are provided with two rows and are respectively and rotatably connected to the inner sides of the two mounting plates, and the two rows of travelling wheels are respectively arranged on two sides of the I-shaped rail.
Optionally, a driving motor for driving the travelling wheels to rotate is arranged on the outer side of the mounting plate.
Optionally, the lower connecting plate is detachably and fixedly connected to the top of the mounting frame through bolts.
Optionally, the inner wall of the limiting ring and the outer wall of the sleeve are frosted surfaces.
Optionally, the sleeve is circular in cross-section.
The crane lifting device for stable lifting has the following advantages:
(1) The telescopic columns can limit the swing of the lifting appliance, so that the lifting and moving of the lifting appliance are more stable, the telescopic columns are arranged between the main beam and the lifting appliance, the weight is added on the main beam, no extra load is caused on the trolley, and the operation precision of the trolley is ensured; and two telescopic columns are arranged at the bottoms of two main beams, have larger spans and can be suitable for a lifting appliance with longer length.
(2) The two pressure sensors on the first sleeve correspond to the limit shrinkage state and the limit stretching state of the telescopic column, namely the highest point and the lowest point which can be reached by the lifting appliance, when the numerical value of the pressure sensor reaches a set value, the lifting appliance is indicated to reach the limit position and can not rise or descend any more, and the protection effect on equipment is achieved.
(3) The driving motor can actively drive the telescopic column to synchronously move with the trolley, so that the situation that the telescopic column is blocked due to driven is prevented, and the normal movement of the lifting appliance is influenced.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a top view of the present invention.
Fig. 3 is a side view of the present invention.
Fig. 4 is an enlarged schematic view of the portion a in fig. 3.
Fig. 5 is a schematic view of the telescopic column in a contracted state.
Fig. 6 is a schematic view of the telescopic column in a stretched state.
Fig. 7 is a schematic view of the arrangement of the pressure sensor.
Reference numerals: 1. end beam: 2. and (3) a main beam: 3. lifting trolley: 4. and (3) winding drum: 5. lifting appliance: 6. and (3) mounting frame: 7. telescoping column: 8. movable pulley block: 9. lifting hook: 10. guide rail: 11. and (2) mounting plate: 12. walking wheels: 13. and (3) a driving motor: 14. a sleeve: 15. and (3) an upper connecting plate: 16. the lower connecting plate: 17. limit ring: 18. an upper limiting block: 19. roller: 20. the lower limiting block: 21. a first sleeve: 22. a pressure sensor: 23. a wire rope.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, wherein the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like designate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, and do not designate or imply that the apparatus or elements in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore are not to be construed as limiting the present invention.
The terms "first," "second," and the like, 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.
As shown in fig. 1-7, a crane lifting device for stable lifting comprises two end beams 1, wherein two main beams 2 are installed between the two end beams 1, a trolley track is arranged on each main beam 2, a trolley 3 is operated on the two trolley tracks, two winding drums 4 are arranged on the trolley 3, and a lifting appliance 5 is arranged below the trolley 3. The hoist 5 includes mounting bracket 6, and the setting direction of mounting bracket 6 is the same with the setting direction of end beam 1, and the bottom fixedly connected with lifting hook 9 of mounting bracket 6, and the both sides at mounting bracket 6 top are provided with running block 8 respectively, are provided with on the travelling bogie 3 with running block 8 assorted fixed pulley group, and every reel 4 corresponds a running block 8 and a fixed pulley group, and wire rope 23 on the reel 4 walks around corresponding running block 8 and fixed pulley group after fixing on the travelling bogie 3. The both sides at mounting bracket 6 top still are provided with flexible post 7, and flexible post 7 is located the outside of running block 8, and flexible post 7 is vertical to be set up between mounting bracket 6 and girder 2, and the bottom of girder 2 is provided with guide rail 10, and guide rail 10 is the I-shaped track, and the top of flexible post 7 is provided with two mounting panels 11 relatively, and the inboard rotation of every mounting panel 11 is connected with one row of running wheel 12, and two rows of running wheels 12 set up respectively in the orbital both sides of I-shaped, and running wheel 12 can remove along guide rail 10. The outside of mounting panel 11 is provided with and is used for driving walking wheel 12 pivoted driving motor 13, and driving motor 13 can initiatively drive flexible post 7 and lifting trolley 3 synchronous motion, prevents that flexible post 7 from appearing the condition of jam because of the bottom moves along with mounting bracket 6 and the top is motionless, influences the normal movement of hoist 5.
The telescopic column 7 comprises a plurality of concentrically arranged sleeves 14, the diameter of the sleeve 14 is gradually reduced from outside to inside, the top of the sleeve 14 at the outermost side is fixedly connected with an upper connecting plate 15, the mounting plate 11 is arranged at the top of the upper connecting plate 15, the bottom of the sleeve 14 at the innermost side is fixedly connected with a lower connecting plate 16, and the lower connecting plate 16 is detachably and fixedly connected to the top of the mounting frame 6 through bolts, so that the telescopic column 7 and the lifting appliance 5 are conveniently connected and detached, and daily overhaul and maintenance are facilitated. Limiting rings 17 are arranged at the top and the bottom of the inner wall of the sleeve 14, an upper limiting block 18, a roller 19 and a lower limiting block 20 are arranged at the top of the outer wall of the sleeve 14, the roller 19 is arranged between the upper limiting block 18 and the lower limiting block 20, the roller 19 moves along the inner wall of the adjacent sleeve 14 in the vertical direction, the upper limiting block 18, the roller 19 and the lower limiting block 20 are not arranged on the sleeve 14 at the outermost side, and the limiting rings 17 are not arranged on the sleeve 14 at the innermost side. The cross section of sleeve 14 is circular, is favorable to sleeve 14 to slide smoothly in vertical direction, and when sleeve 14 contracts completely, spacing ring 17 laminating with adjacent sleeve 14 outer wall, and the bottom laminating of spacing ring 17 at upper stopper 18 and top is laminated, and when sleeve 14 stretches completely, lower stopper 20 and the top laminating of spacing ring 17 at bottom. The outermost sleeve 14 is called a first sleeve 21, the bottom of the stop collar 17 at the top of the first sleeve 21 is provided with a pressure sensor 22, the top of the stop collar 17 at the bottom of the first sleeve 21 is also provided with a pressure sensor 22, and the pressure sensor 22, the upper stop block 18 and the lower stop block 20 are in the same vertical direction. The two pressure sensors 22 correspond to the extreme contraction state and the extreme stretching state of the telescopic column 7, namely the highest point and the lowest point which can be reached by the lifting appliance 5, when the pressure value given to the pressure sensor 22 by the upper limiting block 18 or the lower limiting block 20 reaches a set value, the lifting appliance 5 reaches the limit position and cannot ascend or descend any more, and the winding drum 4 does not rotate any more at the moment, so that the equipment is protected. The inner wall of spacing ring 17 and the outer wall of sleeve 14 are the frosting, under the normal condition, have certain self-locking ability between the adjacent sleeve 14, avoid sleeve 14 to all pile up the condition in flexible post 7 bottom, when wire rope 23 appears cracked condition, the flexible post 7 atress of both sides is unbalanced, the condition of slope can appear, frictional force between spacing ring 17 and the sleeve 14 can increase this moment, flexible post 7 can not continue to lengthen, avoid hoist 5 to appear the condition of rapid drop, the security has obtained the improvement.
The principle of the invention is as follows: the swing of the lifting appliance 5 is limited by the rigid structure of the two telescopic columns 7, so that the stability of the lifting appliance 5 in lifting and moving is improved. The telescopic column 7 is arranged between the main beam 2 and the lifting appliance 5, the weight of the telescopic column 7 is added to the main beam 2 instead of the trolley 3, no extra load is caused to the trolley 3, the weight of the trolley 3 is not increased, and the operation precision is ensured. The interval between the two telescopic columns 7 is just the interval between the two main beams 2, and the span is great, can be applicable to the longer hoist 5 of length, guarantees its stability that promotes.
The embodiments described above are merely some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
Claims (7)
1. The utility model provides a hoist hoisting device of stable promotion, includes two end beams, installs two girders between two end beams, is provided with a dolly track on every girder, and the operation has the dolly of lifting on two dolly tracks, its characterized in that: the lifting trolley is provided with two reels, the lifting appliance is arranged below the lifting trolley and comprises a mounting frame, the arrangement direction of the mounting frame is the same as that of the end beam, the bottom of the mounting frame is fixedly connected with a lifting hook, two sides of the top of the mounting frame are respectively provided with a movable pulley block, the lifting trolley is provided with fixed pulley blocks matched with the movable pulley blocks, each reel corresponds to one movable pulley block and one fixed pulley block, and a steel wire rope on the reel bypasses the corresponding movable pulley block and fixed pulley block and is then fixed on the lifting trolley; the two sides of the top of the mounting frame are also provided with telescopic columns, the telescopic columns are vertically arranged between the mounting frame and the main beam, the bottom of the main beam is provided with a guide rail, the top of the telescopic columns is provided with travelling wheels, and the travelling wheels move along the guide rail; the telescopic column comprises a plurality of concentrically arranged sleeves, the diameter of the sleeves is gradually reduced from outside to inside, the top of the sleeve at the outermost side is fixedly connected with an upper connecting plate, the travelling wheels are arranged at the top of the upper connecting plate, the bottom of the sleeve at the innermost side is fixedly connected with a lower connecting plate, and the lower connecting plate is fixedly connected at the top of the mounting frame; limiting rings are arranged at the top and the bottom of the inner wall of the sleeve, an upper limiting block, a roller and a lower limiting block are arranged at the top of the outer wall of the sleeve, the roller is arranged between the upper limiting block and the lower limiting block, and the roller moves in the vertical direction along the inner wall of the adjacent sleeve; when the sleeve is completely contracted, the limiting rings are attached to the adjacent sleeves, and the upper limiting block is attached to the limiting rings at the top.
2. The stably lifting hoist trolley of claim 1, characterized in that: the sleeve on the outermost side is called a first sleeve, a pressure sensor is arranged at the bottom of a limiting ring at the top of the first sleeve, a pressure sensor is also arranged at the top of a limiting ring at the bottom of the first sleeve, and the pressure sensor, an upper limiting block and a lower limiting block are arranged on the same vertical direction.
3. The stably lifting hoist trolley of claim 1, characterized in that: the guide rail is an I-shaped rail, two mounting plates are oppositely arranged at the top of the upper connecting plate, the travelling wheels are provided with two rows and are respectively and rotatably connected to the inner sides of the two mounting plates, and the two rows of travelling wheels are respectively arranged on two sides of the I-shaped rail.
4. A stably lifting crane hoist as claimed in claim 3, characterized in that: the outside of mounting panel is provided with the driving motor who is used for driving walking wheel pivoted.
5. The stably lifting hoist trolley of claim 1, characterized in that: the lower connecting plate can be detached and fixedly connected to the top of the mounting frame through bolts.
6. The stably lifting hoist trolley of claim 1, characterized in that: the inner wall of the limiting ring and the outer wall of the sleeve are frosted surfaces.
7. The stably lifting hoist trolley of claim 1, characterized in that: the cross section of the sleeve is circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310620204.4A CN116374817A (en) | 2023-05-30 | 2023-05-30 | Crane lifting device capable of stably lifting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310620204.4A CN116374817A (en) | 2023-05-30 | 2023-05-30 | Crane lifting device capable of stably lifting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116374817A true CN116374817A (en) | 2023-07-04 |
Family
ID=86969763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310620204.4A Pending CN116374817A (en) | 2023-05-30 | 2023-05-30 | Crane lifting device capable of stably lifting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116374817A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009054226B3 (en) * | 2009-11-21 | 2011-02-24 | Demag Cranes & Components Gmbh | Basic frame of a hoist, in particular cable, with connection options |
| CN201756415U (en) * | 2010-07-13 | 2011-03-09 | 柳州六和方盛机械有限公司 | Guide rod hanger |
| CN108639951A (en) * | 2018-05-12 | 2018-10-12 | 芜湖通恒信息技术有限公司 | A kind of electric hoist crane for communication field |
| CN109264578A (en) * | 2018-11-26 | 2019-01-25 | 新乡市豫新起重机械有限公司 | A kind of electric block is anti-to wave automatic butt type crane |
| CN209038893U (en) * | 2018-11-23 | 2019-06-28 | 新乡市豫新起重机械有限公司 | A kind of fluid pressure type is anti-to wave automatic butt crane |
| CN110329915A (en) * | 2019-07-24 | 2019-10-15 | 河南恒远恒山工业有限公司 | A kind of overhead crane with carrier-beam |
| CN212101590U (en) * | 2020-04-28 | 2020-12-08 | 河南巨人起重机集团有限公司 | Full-automatic steel plate sucker energy-saving crane |
| CN212269240U (en) * | 2020-04-15 | 2021-01-01 | 河南省天桥重型机械有限公司 | Electric single-beam crane trolley |
| CN113321121A (en) * | 2021-06-10 | 2021-08-31 | 中建七局第四建筑有限公司 | Hoisting device for prefabricated components of fabricated building |
| CN214359854U (en) * | 2021-02-22 | 2021-10-08 | 崔永兵 | Anti-swing device of single-beam crane |
| CN113582055A (en) * | 2021-07-28 | 2021-11-02 | 杭州守正供应链服务有限责任公司 | Hoist device is used in logistics supply chain management |
| CN217756573U (en) * | 2022-08-05 | 2022-11-08 | 浙江浙星机械制造有限公司 | Heavy object hoisting mechanism for electric single-beam crane |
-
2023
- 2023-05-30 CN CN202310620204.4A patent/CN116374817A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009054226B3 (en) * | 2009-11-21 | 2011-02-24 | Demag Cranes & Components Gmbh | Basic frame of a hoist, in particular cable, with connection options |
| CN201756415U (en) * | 2010-07-13 | 2011-03-09 | 柳州六和方盛机械有限公司 | Guide rod hanger |
| CN108639951A (en) * | 2018-05-12 | 2018-10-12 | 芜湖通恒信息技术有限公司 | A kind of electric hoist crane for communication field |
| CN209038893U (en) * | 2018-11-23 | 2019-06-28 | 新乡市豫新起重机械有限公司 | A kind of fluid pressure type is anti-to wave automatic butt crane |
| CN109264578A (en) * | 2018-11-26 | 2019-01-25 | 新乡市豫新起重机械有限公司 | A kind of electric block is anti-to wave automatic butt type crane |
| CN110329915A (en) * | 2019-07-24 | 2019-10-15 | 河南恒远恒山工业有限公司 | A kind of overhead crane with carrier-beam |
| CN212269240U (en) * | 2020-04-15 | 2021-01-01 | 河南省天桥重型机械有限公司 | Electric single-beam crane trolley |
| CN212101590U (en) * | 2020-04-28 | 2020-12-08 | 河南巨人起重机集团有限公司 | Full-automatic steel plate sucker energy-saving crane |
| CN214359854U (en) * | 2021-02-22 | 2021-10-08 | 崔永兵 | Anti-swing device of single-beam crane |
| CN113321121A (en) * | 2021-06-10 | 2021-08-31 | 中建七局第四建筑有限公司 | Hoisting device for prefabricated components of fabricated building |
| CN113582055A (en) * | 2021-07-28 | 2021-11-02 | 杭州守正供应链服务有限责任公司 | Hoist device is used in logistics supply chain management |
| CN217756573U (en) * | 2022-08-05 | 2022-11-08 | 浙江浙星机械制造有限公司 | Heavy object hoisting mechanism for electric single-beam crane |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111058618B (en) | Combined type telescopic sleeve jacking device and method thereof | |
| US5314083A (en) | Telescopic tower | |
| CN105384035A (en) | Guide rail installation arrangement and method for installing guide rails | |
| CN215756065U (en) | Quick hoist device of construction is contained to prefabricated box of bridge | |
| CN111017734A (en) | Running mechanism of monorail hoisting and transporting equipment | |
| CN110004834A (en) | A kind of automatic climbing platform for hanging cable construction | |
| JPH0841828A (en) | Bridge girder erection equipment | |
| CN113202020A (en) | Arch rib maintenance vehicle suitable for box type arch rib inspection | |
| CN216038231U (en) | General gantry crane | |
| CN111720124A (en) | Derrick for installing vertical shaft pipeline | |
| CN108928783B (en) | Shear type climbing hoisting machine for existing building additionally installed elevator | |
| CN113638312A (en) | Multi-functional bridge railing construction trolley | |
| CN213085256U (en) | Single-beam portal crane with suspended trolley | |
| CN213011692U (en) | Stable telescopic cantilever crane | |
| CN113443535B (en) | Down extending type lifting equipment for well construction and mounting method thereof | |
| CN116374817A (en) | Crane lifting device capable of stably lifting | |
| CN215925636U (en) | Multi-functional bridge railing construction trolley | |
| CN210856930U (en) | Maintenance system of cable-stay bridge inverted Y-shaped tower column | |
| CN210659199U (en) | Attached detachable multifunctional aerial work platform | |
| CN210886924U (en) | Maintenance platform in retractable double-cable-plane cable-stayed bridge tower stay cable area | |
| CN208087092U (en) | A kind of single track parallel-moving type crane | |
| CN201660377U (en) | Special gantry crane for overlength and large-tonnage parts | |
| CN215669046U (en) | T-beam transverse tensioning operation platform device | |
| CN117886229B (en) | Multifunctional integrated rail type lifting mechanism | |
| CN203821250U (en) | Hanging structure of one-armed box girder bridge erection machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |