CN113387285A - Tower crane with rotary assembly and lifting large arm - Google Patents
Tower crane with rotary assembly and lifting large arm Download PDFInfo
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- CN113387285A CN113387285A CN202110772443.2A CN202110772443A CN113387285A CN 113387285 A CN113387285 A CN 113387285A CN 202110772443 A CN202110772443 A CN 202110772443A CN 113387285 A CN113387285 A CN 113387285A
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- slewing
- assembly
- slewing mechanism
- boom
- tower body
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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
- B66C23/84—Slewing gear
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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
- B66C23/28—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 constructed to operate at successively higher levels
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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
-
- 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
- B66C23/64—Jibs
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Transportation (AREA)
- Jib Cranes (AREA)
Abstract
一种回转总成及大臂可升降的塔式起重机，涉及塔式起重机领域。回转总成及大臂可升降的塔式起重机包括多个依次连接的标准节组成的塔身、套设于塔身上的回转总成、用于驱动回转总成沿塔身升降的升降装置、起重臂和平衡臂；回转总成包括内回转机构和外回转机构及将外回转机构可旋转地连接于内回转机构的回转支承，外回转机构的两端分别与起重臂和平衡臂连接，内回转机构铰接有与其可拆卸连接的翻转梁架，翻转梁架可转动搭设于任一标准节顶部并与内回转机构连接或脱离内回转机构和对应标准节。回转总成及大臂可升降的塔式起重机能够在塔身顶部安全高效地进行标准节加减节作业，且回转总成可带动起重臂和平衡臂沿塔身升降适应不同高度的使用需求。
A slewing assembly and a tower crane whose boom can be lifted and lowered relates to the field of tower cranes. The slewing assembly and the boom liftable tower crane include a tower body composed of a plurality of standard sections connected in sequence, a slewing assembly sleeved on the tower body, a lifting device for driving the slewing assembly to go up and down along the tower body, and a lifting device. Heavy arm and balance arm; the slewing assembly includes an inner slewing mechanism and an outer slewing mechanism and a slewing bearing that rotatably connects the outer slewing mechanism to the inner slewing mechanism, and the two ends of the outer slewing mechanism are respectively connected to the boom and balance arm, The inner slewing mechanism is hinged with an overturning beam frame which is detachably connected with it, and the overturning beam frame can be rotatably erected on the top of any standard section and connected with the inner slewing mechanism or separated from the inner slewing mechanism and the corresponding standard section. The slewing assembly and the tower crane with liftable boom can safely and efficiently perform standard section addition and subtraction operations on the top of the tower body, and the slewing assembly can drive the boom and balance arm to rise and fall along the tower body to meet the needs of different heights. .
Description
Technical Field
The application relates to the field of tower cranes, in particular to a tower crane with a rotary assembly and a large arm capable of being lifted.
Background
Tower cranes, referred to as tower cranes, are widely used in the construction industry as common vertical transportation equipment. At present, the self-elevating tower crane capable of being added with joints is adopted on the construction site to adapt to different increased construction building heights, the swing mechanism of the self-elevating tower crane capable of being added with joints is fixedly connected with the standard joint at the top of a tower body, the working height of the swing mechanism is fixed at the top of the tower body along with the increase and decrease of the standard joint and can not be adjusted at will, meanwhile, the lower part of the swing mechanism of the self-elevating tower crane capable of being added with joints is generally provided with an outer sleeve frame and a lifting device, the lifting of the outer sleeve frame and the upper tower crane can be realized through the expansion and contraction of a lifting oil cylinder of the lifting device, the increase and decrease of the standard joint are carried out at the position of the outer sleeve frame, in the process of adding joints and reducing joints of the tower crane, the weight of equipment at the top of the tower crane is supported by the outer sleeve frame and the lifting device for a long time, the normative operation requirement on operators is higher, and casualty accidents can easily occur in the actual operation process.
Disclosure of Invention
An object of this application is to provide a tower crane of gyration assembly and big arm liftable, it can carry out standard festival at the tower body top safely high-efficiently and add the festival operation, and the gyration assembly can drive jib loading boom and balance arm and adapt to the not user demand of co-altitude along the tower body lift.
The embodiment of the application is realized as follows:
the embodiment of the application provides a tower crane with a rotary assembly and a lifting large arm, which comprises a tower body consisting of a plurality of sequentially connected standard sections, the rotary assembly sleeved on the tower body, a lifting device used for driving the rotary assembly to lift along the tower body, a crane boom and a balance arm; the slewing assembly comprises an inner slewing mechanism and an outer slewing mechanism which are sleeved on the tower body, a slewing bearing which can connect the outer slewing mechanism to the inner slewing mechanism in a rotating mode around a vertical axis, two ends of the outer slewing mechanism are respectively connected with the crane boom and the balance arm, the slewing assembly further comprises a turnover beam frame, one end of the turnover beam frame is hinged to one end of the top of the inner slewing mechanism, the other end of the turnover beam frame is detachably connected with the other end of the top of the inner slewing mechanism, and the turnover beam frame is configured to be rotatably arranged on the top of any standard joint and connected with or separated from the inner slewing mechanism and the corresponding standard joint.
In some optional embodiments, two hinge columns and two connecting columns are respectively arranged at two ends of the top of the internal rotation mechanism, two sides of one end of the overturning beam frame are respectively hinged with the two hinge columns, and two sides of the other end of the overturning beam frame are respectively detachably connected with the two connecting columns through fixing pins.
In some optional embodiments, the lifting device comprises an upper lifting seat connected with two sides of the bottom of the inner swing mechanism respectively and a lower lifting seat located below the two upper lifting seats respectively, at least one lifting cylinder is hinged between each upper lifting seat and the corresponding lower lifting seat respectively, two ends of each upper lifting seat and two ends of each lower lifting seat are connected with a turning claw capable of rotating along a vertical plane respectively, two outer walls of two sides of the standard knot are connected with a plurality of steps arranged at intervals along the height direction of the standard knot respectively, and the steps are used for supporting the turning claws which rotate to the horizontal direction.
In some alternative embodiments, the upper lifting seat and the lower lifting seat are respectively provided with a turnover motor for driving the corresponding turnover claws to rotate.
In some optional embodiments, two ends of the top of each standard knot are respectively connected with a standard knot hoisting structure ring buckle.
The beneficial effect of this application is: the tower crane with the liftable rotating assembly and the big arm provided by the embodiment comprises a tower body consisting of a plurality of sequentially connected standard sections, the rotating assembly sleeved on the tower body, a lifting device used for driving the rotating assembly to lift along the tower body, a crane boom and a balance arm; the slewing assembly comprises an inner slewing mechanism and an outer slewing mechanism which are sleeved on the tower body, a slewing bearing which can connect the outer slewing mechanism to the inner slewing mechanism in a rotating mode around a vertical axis, two ends of the outer slewing mechanism are respectively connected with the crane boom and the balance arm, the slewing assembly further comprises a turnover beam frame, one end of the turnover beam frame is hinged to one end of the top of the inner slewing mechanism, the other end of the turnover beam frame is detachably connected with the other end of the top of the inner slewing mechanism, and the turnover beam frame is configured to be rotatably arranged on the top of any standard joint and connected with or separated from the inner slewing mechanism and the corresponding standard joint. The tower crane of gyration assembly and big arm liftable that this embodiment provided can carry out standard festival at the tower body top and add the festival operation of subtracting, has the advantage that the efficiency of construction is high and the safety in utilization is high, and the gyration assembly can drive jib loading boom and balance arm and go up and down to adapt to not co-altitude user demand along the tower body.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a slewing assembly and a tower crane with a liftable large arm provided in an embodiment of the present application;
fig. 2 is a schematic partial structural view of a tower crane with a liftable large arm and a swing assembly provided in an embodiment of the present application;
fig. 3 is a schematic structural diagram of a first view angle at which a rotation assembly, a lifting device, and a tower body are connected in the tower crane in which the rotation assembly and the large arm can be lifted and lowered according to the embodiment of the present application;
fig. 4 is a schematic structural diagram of a second view angle at which the slewing assembly, the lifting device, and the tower body are connected in the slewing assembly and the tower crane with the liftable and lowerable jib according to the embodiment of the present application;
fig. 5 is a schematic structural diagram of a lifting device in a tower crane in which a slewing assembly and a boom can be lifted and lowered according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a standard knot in a tower crane with a slewing assembly and a liftable large arm provided in the embodiment of the present application.
In the figure: 100. a tower body; 110. a standard section; 111. stepping; 112. the standard knot hoisting structure is buckled; 120. a cargo boom; 130. a balance arm; 140. an upper lifting seat; 150. a lower lifting seat; 160. turning over the clamping jaws; 170. a lift cylinder; 200. a swing assembly; 210. an internal swing mechanism; 220. an external swing mechanism; 230. a slewing bearing; 231. an inner ring; 232. an outer ring; 240. turning over the beam frame; 250. a hinged column; 260. connecting columns; 270. and fixing the pin.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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 application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when in use, and are used only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The features and performance of the slewing assembly and the tower crane with a liftable and lowerable jib according to the present application will be described in further detail with reference to the following embodiments.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, an embodiment of the present application provides a tower crane with a liftable slewing assembly and a large boom, which includes a tower body 100 composed of fifteen sequentially connected standard joints 110, a slewing assembly 200 sleeved on the tower body 100, a lifting device for driving the slewing assembly 200 to lift along the tower body 100, a boom 120 and a balance arm 130; the swing assembly 200 comprises an inner swing mechanism 210 and an outer swing mechanism 220 sleeved on the tower body 100 and a swing support 230 connecting the outer swing mechanism 220 to the inner swing mechanism 210 in a manner of rotating around a vertical axis, the swing support 230 comprises an inner ring 231 connected with the inner swing mechanism 210 and an outer ring 232 connected with the outer swing mechanism 220, the outer ring 232 is rotatably connected with the inner ring 231, and two ends of the outer swing mechanism 220 are respectively connected with the crane boom 120 and the balance arm 130; the top end of the internal rotation mechanism 210 is hinged with one end of a turnover beam frame 240, the other end of the turnover beam frame 240 is detachably connected with the other top end of the internal rotation mechanism 210, the turnover beam frame 240 is configured to be rotatably arranged on the top of any standard joint 110 and connected with the internal rotation mechanism 210 or separated from the internal rotation mechanism 210 and the corresponding standard joint 110, wherein two hinge columns 250 and two connecting columns 260 are respectively arranged at two ends of the top of the internal rotation mechanism 210, two sides of one end of the turnover beam frame 240 are respectively hinged with the two hinge columns 250, two sides of the other end are respectively detachably connected with the two connecting columns 260 through fixing pins 270, and the fixing pins 270 are separated from or sequentially penetrate through the two connecting columns 260 and then are inserted into two sides of one end of the turnover beam frame 240 when moving axially.
The lifting device comprises upper lifting seats 140 respectively connected with two sides of the bottom of the internal rotation mechanism 210 and lower lifting seats 150 respectively positioned below the two upper lifting seats 140, a lifting cylinder 170 is respectively hinged between each upper lifting seat 140 and the corresponding lower lifting seat 150, two ends of each upper lifting seat 140 and the lower lifting seat 150 are respectively connected with a turning claw 160 capable of rotating along a vertical plane, two outer walls of two sides of the standard knot 110 are respectively connected with four steps 111, the four steps 111 arranged at one side of each standard knot 110 are equally divided into two rows and are arranged along the height direction of the standard knot at intervals, the steps 111 are used for supporting the turning claws 160 arranged in a horizontal direction, in the embodiment, the turning claws 160 are rotatably connected with the corresponding upper lifting seats 140 or lower lifting seats 150 through bolts, when the bolts are unscrewed, the turning claws 160 can be rotated to a vertical arrangement or a horizontal arrangement relative to the upper lifting seats 140 or the lower lifting seats 150, the bolt is then tightened to secure the upset jaw 160 to the corresponding upper or lower lift base 140, 150. Two ends of the top of each standard knot 110 are respectively connected with a standard knot hoisting structure buckle 112.
The tower crane with the liftable rotation assembly and the big arm provided by the embodiment comprises a tower body 100, a rotation assembly 200 and a lifting device, wherein the tower body 100 is formed by sequentially connecting a plurality of standard joints 110, the rotation assembly 200 is sleeved on the tower body 100, the lifting device is used for driving the rotation assembly 200 to lift along the tower body 100, the rotation assembly 200 comprises an inner rotation mechanism 210 and an outer rotation mechanism 220 which are sleeved on the tower body 100, and a rotation support 230 which connects the outer rotation mechanism 220 to the inner rotation mechanism 210 in a rotatable manner around a vertical axis, and two ends of the outer rotation mechanism 220 are respectively connected with a jib boom 120 and a balance arm 130; when the material is required to be hung on the crane boom 120 connected by the external rotation mechanism 220 of the rotation assembly 200, one end of the top of the internal rotation mechanism 210 is hinged with a turning beam frame 240, one end of the turning beam frame 240 far away from the internal rotation mechanism 210 is rotatably erected on the top of a standard knot 110, meanwhile, two fixing pins 270 respectively penetrate through two connecting posts 260 in sequence and then are inserted into two sides of one end of the turning beam frame 240 far away from the internal rotation mechanism 210 for fixation, at the moment, the rotation assembly 200 is erected and fixed on the top of the standard knot 110 through the turning beam frame 240 connected on the top, so that the stability of the material hung on the crane boom 120 connected by the external rotation mechanism 220 is ensured, when the position of the rotation assembly 200 along the tower body 100 needs to be adjusted, an operator only needs to pull out the two fixing pins 270 respectively on two sides of one end of the two connecting posts 260 and the turning beam frame 240, rotate the turning beam frame 240 to make the crane boom 120 fall off the standard knot 110 and the tower body 100, then, the lifting device is used to drive the rotation assembly 200 to lift along the tower body 100, specifically, taking the lifting device to drive the rotation assembly 200 to lift along the tower body 100 as an example, first the turning claws 160 respectively connected to two ends of the two upper lifting bases 140 are rotated to be vertically arranged, the cylinder rods of the two lifting cylinders 170 are controlled to extend out, at this time, the turning claws 160 respectively connected to two ends of the two lower lifting bases 150 are horizontally arranged and downwardly abut against the steps 111 respectively connected to the outer walls of two sides of the corresponding standard joint 110, so that the cylinder rods extending out through the two lifting cylinders 170 drive the two upper lifting bases 140 and the inner rotation mechanism 210, the rotation support 230 and the outer rotation mechanism 220 to lift to one section of the standard joint 110 above, at this time, the turning claws 160 respectively connected to two ends of the two upper lifting bases 140 are rotated again to be horizontally arranged to abut against the steps 111 respectively arranged on the outer walls of two sides of the corresponding standard joint 110 for supporting, then, the turning claws 160 respectively connected to the two ends of the two lower lifting seats 150 are rotated to be vertically arranged, the cylinder rods of the two lifting cylinders 170 are controlled to be contracted, at this time, the turning claws 160 respectively connected to the two ends of the two upper lifting seats 140 are horizontally arranged and downwardly abut against the steps 111 respectively connected to the outer walls of the two sides of the corresponding standard section 110, so that the two lower lifting seats 150 are driven to ascend to the corresponding standard section 110 by the cylinder rods contracted by the two lifting cylinders 170, the turning claws 160 respectively connected to the two ends of the two lower lifting seats 150 are rotated again to be horizontally arranged to be supported by the steps 111 respectively arranged on the outer walls of the two sides of the corresponding standard section 110, the operation of driving the rotation assembly 200 to ascend along the tower body 100 by using the lifting device is completed, at this time, the turning beam frame 240 can be rotated reversely, and the two fixing pins 270 are respectively inserted into the two sides of one end of the turning beam frame 240 after sequentially passing through the two connecting columns 260 and fixed, the swing assembly 200 is set up and fixed to the top of the corresponding standard knot 110 by the top-coupled flip-flop frame 240.
The both ends of the top both sides of every standard festival 110 are connected with standard festival hoisting structure latch closure 112 respectively, can conveniently hang up standard festival 110 to tower body 100 top through standard festival hoisting structure latch closure 112 and connect in order to add the festival operation to tower body 100.
In other optional embodiments, the upper lifting seat 140 and the lower lifting seat 150 are further respectively connected with a turning motor for driving each turning claw 160 to rotate, and an operator may control the turning motor to drive the turning claws 160 connected to the corresponding upper lifting seat 140 and the corresponding lower lifting seat 150 to rotate to a vertical arrangement for lifting, or rotate to a horizontal arrangement for pressing down the steps 111 respectively disposed on the outer walls of the two sides of the corresponding standard knot 110 for supporting.
The embodiments described above are some, but not all embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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 application.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110772443.2A CN113387285B (en) | 2021-07-08 | 2021-07-08 | Tower crane with rotary assembly and lifting large arm |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110772443.2A CN113387285B (en) | 2021-07-08 | 2021-07-08 | Tower crane with rotary assembly and lifting large arm |
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| Publication Number | Publication Date |
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| CN113387285A true CN113387285A (en) | 2021-09-14 |
| CN113387285B CN113387285B (en) | 2024-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110772443.2A Active CN113387285B (en) | 2021-07-08 | 2021-07-08 | Tower crane with rotary assembly and lifting large arm |
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| CN (1) | CN113387285B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114955894A (en) * | 2022-06-13 | 2022-08-30 | 中建三局集团有限公司 | Top-added-joint self-lifting type folding tower crane |
| CN119976672A (en) * | 2025-01-15 | 2025-05-13 | 武汉船用机械有限责任公司 | Lifting equipment and method for assembling lifting equipment |
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| CN111762699A (en) * | 2020-06-29 | 2020-10-13 | 中建三局集团有限公司 | A safety tower crane and its implementation method |
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| CN103295457A (en) * | 2013-05-22 | 2013-09-11 | 温州建设集团有限公司 | Examining and training teaching aid and method for assembling and disassembling tower crane |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114955894A (en) * | 2022-06-13 | 2022-08-30 | 中建三局集团有限公司 | Top-added-joint self-lifting type folding tower crane |
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| CN119976672A (en) * | 2025-01-15 | 2025-05-13 | 武汉船用机械有限责任公司 | Lifting equipment and method for assembling lifting equipment |
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| Publication number | Publication date |
|---|---|
| CN113387285B (en) | 2024-06-07 |
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