CN110980548A - Maintenance channel for crane - Google Patents
Maintenance channel for crane Download PDFInfo
- Publication number
- CN110980548A CN110980548A CN201911378794.4A CN201911378794A CN110980548A CN 110980548 A CN110980548 A CN 110980548A CN 201911378794 A CN201911378794 A CN 201911378794A CN 110980548 A CN110980548 A CN 110980548A
- Authority
- CN
- China
- Prior art keywords
- workstation
- crane
- end workbench
- ladder
- workbench
- 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
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/26—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
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- 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
- B66C13/52—Details of compartments for driving engines or motors or of operator's stands or cabins
- B66C13/54—Operator's stands or cabins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/18—Devices for preventing persons from falling
- E06C7/186—Rail or rope for guiding a safety attachment, e.g. a fall arrest system
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C9/00—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes
- E06C9/02—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes rigidly mounted
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Transportation (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
The invention discloses a maintenance channel for a crane, relates to the technical field of cranes, and aims to solve the problems that in the prior art, the crane does not have enough space to replace some crane components, and in order to facilitate the maintenance of damaged parts of the crane, non-related parts needing to be disassembled vacate operating space. The bottom of hoist main part is provided with the bottom workstation, the top of bottom workstation is provided with the middle-end workstation, and the bottom work passes through bolted connection with the middle-end workstation, the top of middle-end workstation is provided with the top workstation, and the middle-end workstation passes through bolted connection with the top workstation, the top of top workstation is provided with lifts by crane the frame, and the top workstation passes through bolted connection with the frame of lifting by crane, the inside of the frame of lifting by crane is provided with fixed hanging wheel subassembly, and fixed hanging wheel subassembly and the frame built-up connection that lifts by crane, one side of middle-end workstation sets up organism control chamber, and organism control chamber and middle-end workstation fixed connection.
Description
Technical Field
The invention relates to the technical field of cranes, in particular to a maintenance channel for a crane.
Background
In 10 b.c., ancient roman architects vitto ruvis have described a hoisting machine in their construction manual. The machine has a mast, a pulley mounted on the mast, a guy cable for fixing the position of the mast, and a winch for pulling the cable through the pulley to lift the weight. Some overweight machines can form a herringbone by using two masts to transversely move a hoisted object, but the range is very small, the operation is very laborious, and the problem is solved only by inventing a rotating arm type crane in Italy in the 15 th century. The crane has an inclined cantilever, and pulleys are arranged on the top of the cantilever, so that the crane can be lifted and rotated. However, until the 18 th century, various lifting machines used by human beings were powered by manpower or animal power, and were limited in lifting capacity, range of use and working efficiency, and in the middle and late 18 th century, after british watt's improvement and the invention of steam engines, powered conditions were provided for the lifting machines. In 1805, the glan engineer ran a first batch of steam cranes for the london dock. In 1846, a steam crane of a new castle dock is changed into a hydraulic crane by armstrong in the uk, and in the early stage of the 20 th century, a tower crane is used in europe, wherein the crane mainly comprises a hoisting mechanism, a running mechanism, a luffing mechanism, a slewing mechanism, a metal structure and the like. The hoisting mechanism is the basic working mechanism of the crane, mostly consists of a hanging system and a winch, and also lifts heavy objects through a hydraulic system.
However, the existing cranes do not have enough space to replace some crane components, so that in order to repair damaged parts of the cranes, non-relevant parts to be disassembled are needed to make up the operating space; therefore, the existing requirements are not met, and a maintenance channel for the crane is provided for the requirement.
Disclosure of Invention
The invention aims to provide a maintenance channel for a crane, which aims to solve the problems that the crane proposed in the background art does not have enough space for replacing some crane components and non-related parts need to be disassembled to free up operating space for the convenience of repairing damaged parts of the crane.
In order to achieve the purpose, the invention provides the following technical scheme: a maintenance channel for a crane comprises a crane main body, wherein a bottom end workbench is arranged at the bottom of the crane main body, a middle end workbench is arranged above the bottom end workbench, the bottom end workbench is connected with the middle end workbench through a bolt, a top end workbench is arranged above the middle end workbench and is connected with the top end workbench through a bolt, a lifting machine base is arranged above the top end workbench and is connected with the lifting machine base through a bolt, a fixed lifting wheel assembly is arranged inside the lifting machine base and is connected with the lifting machine base in a combined manner, a machine body operating chamber is arranged on one side of the middle end workbench and is fixedly connected with the middle end workbench, a second variable frequency control chamber is arranged inside the middle end workbench, a first variable frequency control chamber is arranged inside the top end workbench, and side guardrails are arranged on the outer sides of the first variable frequency control room and the second variable frequency control room.
Preferably, the bottom of the middle-end workbench and the bottom of the top workbench are both provided with a walking platform, the walking platform is connected with the middle-end workbench and the top workbench in a welded mode, and the side guardrails are connected with the walking platform in a welded mode.
Preferably, one side of the crane main body is provided with an external maintenance crawling ladder, the external maintenance crawling ladder is connected with the bottom end workbench, the middle end workbench and the top end workbench through bolts, a metal ladder plate is arranged on the inner side of the external maintenance crawling ladder, and the metal ladder plate is connected with the external maintenance crawling ladder in a combined mode.
Preferably, one side of the external maintenance crawling ladder is provided with an arc-shaped holding rod, the arc-shaped holding rod is connected with the external maintenance crawling ladder through a bolt, the inner side of the arc-shaped holding rod is provided with an inner side locking rod, the inner side locking rod is fixedly connected with the arc-shaped holding rod, the outer side of the arc-shaped holding rod is provided with a movable locking ring, and the movable locking ring is connected with the arc-shaped holding rod in a combined mode.
Preferably, the bottom of bottom workstation is provided with the bearing support, and bearing support passes through bolted connection with the bottom workstation, the inside of bottom workstation is provided with drive element, one side of drive element is provided with the weighing element, and drive element and weighing element built-up connection, the one end of drive element is provided with brake block subassembly, the other end of brake block subassembly is provided with promotes the speed reducer, the below of promoting the speed reducer is provided with the variable amplitude speed reducer.
Preferably, the lifting speed reducer and the amplitude-variable speed reducer are connected with a brake block assembly in a combined manner, the brake block assembly is connected with the driving element in a combined manner, and a control cabinet is arranged on one side of the bottom end workbench.
Preferably, the inside second passageway cat ladder that is provided with of first variable frequency control room, and the second passageway cat ladder passes through bolted connection with the top workstation, the second passageway cat ladder extends to the inside of lifting machine seat, the inside first passageway cat ladder that is provided with of second variable frequency control room, and the first passageway cat ladder passes through bolted connection with the middle-end workstation, the first passageway cat ladder extends to the inside of top workstation.
Preferably, a combined valve cover is arranged above the second channel crawling ladder and the first channel crawling ladder and is rotatably connected with the hoisting machine base and the top end workbench.
Compared with the prior art, the invention has the beneficial effects that:
1. the outer side of the crane of the invention is provided with a maintenance ladder which can reach three workbenches on the crane from the outside, one side of the external maintenance ladder is provided with an arc-shaped handrail, the arc-shaped holding rod is firmly connected with an external maintenance ladder stand through a bolt to ensure the stability, the inner side of the arc-shaped holding rod is provided with the dentate staggered lock rods, the safety rope tied at the waist can be tied on the movable lock ring outside the holding rod when climbing, a user holds the ladder stand with one hand and holds the lock ring with the other hand, the lock ring is continuously adjusted according to the position of the lock rod at the inner side in the climbing process, so that the lock ring synchronously ascends along with the body, therefore, even if an accident occurs during the climbing process of a worker, the lock rings can be intercepted by the lock rods staggered up and down, so that the falling of a human body is prevented, and the life safety is guaranteed;
2. two variable frequency control chambers are respectively arranged in the upper end workbench and the lower end workbench, a second channel ladder stand of a first variable frequency control chamber can extend to the interior of a hoisting machine base, enters the interior of a crane base from the second channel ladder stand through the second channel ladder stand for maintenance operation, a first channel ladder stand in the second variable frequency control chamber extends to the interior of the lower end workbench, and enters the interior of the upper end workbench from the upper end workbench through the first channel ladder stand for maintenance operation.
Drawings
FIG. 1 is an overall front view of the present invention;
FIG. 2 is a schematic structural view of a bottom end table of the present invention;
FIG. 3 is a schematic view of the top end table of the present invention;
FIG. 4 is a schematic view of an external maintenance ladder of the present invention;
fig. 5 is an enlarged structural diagram a of the present invention.
In the figure: 1. a crane body; 2. a bottom end working table; 3. a middle-end workbench; 4. a top end table; 5. hoisting the base; 6. a fixed sheave assembly; 7. a first variable frequency control room; 8. side guardrails; 9. a machine body operation chamber; 10. an external maintenance ladder; 11. a first channel ladder; 12. a second variable frequency control room; 13. a walking platform; 14. a control cabinet; 15. a variable amplitude speed reducer; 16. a brake pad assembly; 17. a drive element; 18. a load bearing support; 19. lifting a speed reducer; 20. a weighing element; 21. a second channel ladder; 22. a combined valve cover; 23. a metal ladder plate; 24. an arc-shaped support rod; 25. an inside lock lever; 26. a movable lock ring.
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.
Referring to fig. 1-5, an embodiment of the present invention is shown: a maintenance channel for a crane comprises a crane main body 1, wherein a bottom end workbench 2 is arranged at the bottom of the crane main body 1 and used as a most basic supporting and fixing component, a middle end workbench 3 is arranged above the bottom end workbench 2, the bottom end workbench and the middle end workbench 3 are connected through bolts, a top end workbench 4 is arranged above the middle end workbench 3, the middle end workbench 3 and the top end workbench 4 are connected through bolts, a hoisting machine base 5 is arranged above the top end workbench 4, the top end workbench 4 and the hoisting machine base 5 are connected through bolts, a fixed hoisting wheel component 6 is arranged inside the hoisting machine base 5 to realize hoisting operation, the fixed hoisting wheel component 6 and the hoisting machine base 5 are connected in a combined manner, a machine body operation chamber 9 is arranged on one side of the middle end workbench 3, the machine body operation chamber 9 and the middle end workbench 3 are fixedly connected, a second variable frequency control chamber 12 is arranged inside the middle end workbench 3, the inside of top workstation 4 is provided with first variable frequency control room 7, and internally mounted has the constitutional element of hoist, and the outside of first variable frequency control room 7 and second variable frequency control room 12 all is provided with side guardrail 8, plays safety protection's effect.
Further, the bottom of middle-end workstation 3 and top workstation 4 all is provided with walking platform 13, provides the space of walking of standing, and walking platform 13 and middle- end workstation 3 and 4 welded connection of top workstation, and side guardrail 8 and walking platform 13 welded connection strengthen stability.
Further, one side of the crane main body 1 is provided with an external maintenance ladder stand 10, the external maintenance ladder stand 10 is connected with the bottom end workbench 2, the middle end workbench 3 and the top end workbench 4 through bolts, the external maintenance ladder stand can reach three workbenches on the crane, a metal ladder plate 23 is arranged on the inner side of the external maintenance ladder stand 10, and the metal ladder plate 23 is connected with the external maintenance ladder stand 10 in a combined mode.
Further, one side of outside maintenance cat ladder 10 is provided with arc handrail 24, the staff can put the hand on the handrail of one side when using outside maintenance cat ladder 10, and arc handrail 24 passes through bolted connection with outside maintenance cat ladder 10, the reinforcing stability, the inboard of arc handrail 24 is provided with inboard locking lever 25, when the staff is unexpected in the in-process of climbing, dentate locking lever can intercept the catch, thereby prevent that the human body from falling, and inboard locking lever 25 and arc handrail 24 fixed connection, the outside of arc handrail 24 is provided with movable catch 26, can be with safety rope system on the catch when climbing, in the in-process of climbing, the position of continuous locking lever adjustment catch according to inboard, and movable catch 26 and arc handrail 24 built-up connection.
Further, the bottom of the bottom end workbench 2 is provided with a bearing support 18, the bearing support 18 is connected with the bottom end workbench 2 through a bolt, a driving element 17 is arranged inside the bottom end workbench 2, a weighing element 20 is arranged on one side of the driving element 17, the driving element 17 is connected with the weighing element 20 in a combined mode, one end of the driving element 17 is provided with a brake pad assembly 16, the other end of the brake pad assembly 16 is provided with a lifting speed reducer 19, a variable amplitude speed reducer 15 is arranged below the lifting speed reducer 19, and the variable speed adjusting function of the crane is controlled.
Further, the lifting speed reducer 19 and the amplitude reducer 15 are connected with the brake block assembly 16 in a combined mode, the brake block assembly 16 is connected with the driving element 17 in a combined mode, and the control cabinet 14 is arranged on one side of the bottom end workbench 2 and is convenient to adjust and control.
Further, inside second passageway cat ladder 21 that is provided with of first variable frequency control room 7, and second passageway cat ladder 21 passes through bolted connection with top workstation 4, second passageway cat ladder 21 extends to the inside of lifting by crane frame 5, enter into the inside of lifting by crane frame 5 from second passageway cat ladder 21 through second passageway cat ladder 21 and carry out maintenance operation, inside first passageway cat ladder 11 that is provided with of second variable frequency control room 12, and first passageway cat ladder 11 passes through bolted connection with middle-end workstation 3, first passageway cat ladder 11 extends to the inside of top workstation 4, thereby can follow the inside that middle-end workstation 3 got into to top workstation 4 through first passageway cat ladder 11 and carry out maintenance operation.
Further, a combined valve cover 22 is arranged above the second channel crawling ladder 21 and the first channel crawling ladder 11, and the combined valve cover 22 is rotatably connected with the hoisting machine base 5 and the top end workbench 4 and can be opened in a rotating mode from the inside to the outside, so that people can enter and exit.
The working principle is as follows: when the lifting device is used, a worker can reach three working tables on the crane through the external maintenance crawling ladder 10 on one side of the crane, one side of the external maintenance crawling ladder 10 is provided with the arc-shaped holding rod 24 which is firmly connected with the external maintenance crawling ladder 10 through bolts to guarantee stability, the inner side of the arc-shaped holding rod 24 is provided with the tooth-shaped staggered locking rods, a safety rope tied to the waist can be tied on the movable locking ring 26 outside the holding rod during climbing, one hand of the user holds the crawling ladder while the other hand holds the locking ring during climbing, the locking ring is continuously adjusted according to the position of the locking rod on the inner side during climbing, the locking ring can synchronously ascend along with the body, and therefore, even when accidents occur during climbing of the worker, the locking rods staggered up and down can intercept the locking ring, so that the falling of a human body is prevented, and the life safety is guaranteed, and all be provided with a walking platform 13 in one side of middle-end workstation 3 and top workstation 4, can provide the space that the staff stood the walking, and the outside of platform still installs, be provided with two variable frequency control rooms respectively in the inside of middle-end workstation 3 and top workstation 4 at last, second passageway cat ladder 21 at first variable frequency control room 7 can extend to the inside of lifting by crane frame 5, the inside that enters into crane frame 5 from second passageway cat ladder 21 through second passageway cat ladder 21 carries out the maintenance operation, and the inside first passageway cat ladder 11 of second variable frequency control room 12 then extends to the inside of top workstation 4, thereby it carries out the maintenance operation to get into the inside to top workstation 4 from middle-end workstation 3 through first passageway cat ladder 11.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. A maintenance passageway for a crane, comprising a crane main body (1), characterized in that: the bottom of the crane main body (1) is provided with a bottom end workbench (2), a middle end workbench (3) is arranged above the bottom end workbench (2), the bottom end workbench is connected with the middle end workbench (3) through bolts, a top end workbench (4) is arranged above the middle end workbench (3), the middle end workbench (3) is connected with the top end workbench (4) through bolts, a hoisting machine base (5) is arranged above the top end workbench (4), the top end workbench (4) is connected with the hoisting machine base (5) through bolts, a fixed hoisting wheel assembly (6) is arranged inside the hoisting machine base (5), the fixed hoisting wheel assembly (6) is connected with the hoisting machine base (5) in a combined manner, one side of the middle end workbench (3) is provided with an organism operating chamber (9), and the organism operating chamber (9) is fixedly connected with the middle end workbench (3), the inside of middle-end workstation (3) is provided with second variable frequency control room (12), the inside of top workstation (4) is provided with first variable frequency control room (7), the outside of first variable frequency control room (7) and second variable frequency control room (12) all is provided with side guardrail (8).
2. A service aisle for cranes as claimed in claim 1, characterised in that: the bottom of middle-end workstation (3) and top workstation (4) all is provided with walking platform (13), and walking platform (13) and middle-end workstation (3) and top workstation (4) welded connection, side guardrail (8) and walking platform (13) welded connection.
3. A service aisle for cranes as claimed in claim 1, characterised in that: one side of the crane main body (1) is provided with an external maintenance ladder stand (10), the external maintenance ladder stand (10) is connected with the bottom end workbench (2), the middle end workbench (3) and the top end workbench (4) through bolts, a metal ladder plate (23) is arranged on the inner side of the external maintenance ladder stand (10), and the metal ladder plate (23) is connected with the external maintenance ladder stand (10) in a combined mode.
4. A service aisle for cranes as claimed in claim 3, characterised in that: one side of outside maintenance cat ladder (10) is provided with arc and holds up pole (24), and arc holds up pole (24) and passes through bolted connection with outside maintenance cat ladder (10), the inboard of arc holds up pole (24) is provided with inboard locking lever (25), and just inboard locking lever (25) and arc hold up pole (24) fixed connection, the outside of arc holds up pole (24) is provided with movable lock ring (26), and movable lock ring (26) and arc hold up pole (24) built-up connection.
5. A service aisle for cranes as claimed in claim 1, characterised in that: the bottom of bottom workstation (2) is provided with bearing support (18), and bearing support (18) pass through bolted connection with bottom workstation (2), the inside of bottom workstation (2) is provided with drive element (17), one side of drive element (17) is provided with weighing element (20), and drive element (17) and weighing element (20) built-up connection, the one end of drive element (17) is provided with brake block subassembly (16), the other end of brake block subassembly (16) is provided with promotes speed reducer (19), the below of promoting speed reducer (19) is provided with becomes width of cloth speed reducer (15).
6. The maintenance channel of claim 5, wherein: the lifting speed reducer (19) and the amplitude-variable speed reducer (15) are connected with a brake block assembly (16) in a combined mode, the brake block assembly (16) is connected with a driving element (17) in a combined mode, and a control cabinet (14) is arranged on one side of the bottom end workbench (2).
7. A service aisle for cranes as claimed in claim 1, characterised in that: inside second passageway cat ladder (21) that is provided with of first variable frequency control room (7), and second passageway cat ladder (21) and top workstation (4) pass through bolted connection, second passageway cat ladder (21) extend to the inside of lifting by crane frame (5), inside first passageway cat ladder (11) that is provided with of second variable frequency control room (12), and first passageway cat ladder (11) and well end workstation (3) pass through bolted connection, first passageway cat ladder (11) extend to the inside of top workstation (4).
8. The maintenance channel of claim 7, wherein: and a combined valve cover (22) is arranged above the second channel crawling ladder (21) and the first channel crawling ladder (11), and the combined valve cover (22) is rotatably connected with the hoisting machine base (5) and the top end workbench (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911378794.4A CN110980548A (en) | 2019-12-27 | 2019-12-27 | Maintenance channel for crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911378794.4A CN110980548A (en) | 2019-12-27 | 2019-12-27 | Maintenance channel for crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110980548A true CN110980548A (en) | 2020-04-10 |
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ID=70077940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911378794.4A Pending CN110980548A (en) | 2019-12-27 | 2019-12-27 | Maintenance channel for crane |
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| Country | Link |
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| CN (1) | CN110980548A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117361311A (en) * | 2023-12-06 | 2024-01-09 | 山东恒源兵器科技股份有限公司 | Climbing ladder preparation hoisting accessory |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0621228A1 (en) * | 1993-02-24 | 1994-10-26 | Krupp Fördertechnik GmbH | Method of manufacturing and assembling cranes and crane, in particular: shipboard crane |
| CN105384085A (en) * | 2015-12-21 | 2016-03-09 | 太重（天津）滨海重型机械有限公司 | Tower column type three-chord-member boom ship crane |
| CN206705563U (en) * | 2017-04-25 | 2017-12-05 | 中山市劦力重型起重机械有限公司 | A kind of novel pile formula crane |
| CN108252646A (en) * | 2018-02-01 | 2018-07-06 | 中纬建设工程有限公司 | Foundation pit escape ladder |
-
2019
- 2019-12-27 CN CN201911378794.4A patent/CN110980548A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0621228A1 (en) * | 1993-02-24 | 1994-10-26 | Krupp Fördertechnik GmbH | Method of manufacturing and assembling cranes and crane, in particular: shipboard crane |
| CN105384085A (en) * | 2015-12-21 | 2016-03-09 | 太重（天津）滨海重型机械有限公司 | Tower column type three-chord-member boom ship crane |
| CN206705563U (en) * | 2017-04-25 | 2017-12-05 | 中山市劦力重型起重机械有限公司 | A kind of novel pile formula crane |
| CN108252646A (en) * | 2018-02-01 | 2018-07-06 | 中纬建设工程有限公司 | Foundation pit escape ladder |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117361311A (en) * | 2023-12-06 | 2024-01-09 | 山东恒源兵器科技股份有限公司 | Climbing ladder preparation hoisting accessory |
| CN117361311B (en) * | 2023-12-06 | 2024-03-19 | 山东恒源兵器科技股份有限公司 | Climbing ladder preparation hoisting accessory |
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Application publication date: 20200410 |
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