CN111410128B - Simple detachable and fixed gantry lifting equipment and detaching method - Google Patents
Simple detachable and fixed gantry lifting equipment and detaching method Download PDFInfo
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- CN111410128B CN111410128B CN202010377849.6A CN202010377849A CN111410128B CN 111410128 B CN111410128 B CN 111410128B CN 202010377849 A CN202010377849 A CN 202010377849A CN 111410128 B CN111410128 B CN 111410128B
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
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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
- B66C23/34—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes
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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
- B66C23/72—Counterweights or supports for balancing lifting couples
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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
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/18—Travelling gear incorporated in or fitted to trolleys or cranes with means for locking trolleys or cranes to runways or tracks to prevent inadvertent movements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Transportation (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses simple detachable and fixed gantry lifting equipment and a detaching method, and belongs to the technical field of tower crane detaching equipment at an undaria. The lifting device is provided with a counterweight arm, a gantry upright post, a gantry cross beam, a longitudinal beam, lifting lugs, a counterweight sheet, a long-chain block and a supporting assembly, wherein the lifting lugs are movably arranged on the longitudinal beam, the counterweight sheet is lifted by the long-chain block to enable the counterweight sheet to freely move on the counterweight arm, the counterweight block is moved to the roof of the apron building through the movable lifting lugs, the counterweight block is transported away by transportation equipment, and finally the crane boom and the counterweight arm 1 are dismantled, so that the dismantling efficiency is greatly improved, and the construction cost is saved.
Description
Technical Field
The invention belongs to the technical field of equipment for dismantling tower cranes at skirts, and particularly relates to equipment and a dismantling method for dismantling large and medium-sized tower cranes in skirts of high-rise buildings.
Background
Due to the development of cities, high-rise buildings are more and more, large-scale complexes such as hotels, shopping malls and the like gradually enter the cities, a plurality of large-scale complexes such as hotels, shopping malls and the like are all of structures of tower buildings and skirt buildings, the tower buildings are high-rise buildings, and the skirt buildings are multi-story buildings; the appearance of the structure can meet the fire-proof standard requirements of multi-storey buildings, maximize the commercial benefits of the large-space skirt building, not only meet the functions of commercial retail, entertainment, large-scale catering and entertainment, but also save cultivated land, beautify cities and increase the urban functions.
In the structure construction process of tower building plus skirt building, the tower crane plays the role of lifting the weight in the construction, all building materials are transported by the tower crane, and whether the arrangement of the tower crane is reasonable or not is directly related to the success or failure of the engineering. However, the arrangement of the tower cranes for the buildings is difficult, the tower cranes are arranged on the tower sides, and the buildings on the skirt building part cannot be covered; the tower crane is arranged beside the skirt building, and the tower crane is attached to the building along with the increase of the building, so that the height of the skirt building is short, and the problem of installation and attachment cannot be solved; often arrange the tower crane in the skirt building plane and be close to tower building one side, solved the attached problem of the coverage of tower crane and tower crane simultaneously, like this, demolish of tower crane is more difficult, demolishs and needs large truck crane. When a basement is arranged beside the skirt building, the top plate of the basement needs to be reinforced when the large truck crane enters a construction site, so that the dismantling cost is increased. Therefore, the problem of dismantling the tower crane in the high-rise building apron building needs to be researched, and an economical and applicable tower crane dismantling method is found.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides simple detachable and fixed gantry lifting equipment and a detaching method.
In order to achieve the purpose, the invention adopts the following scheme:
the utility model provides a simple and easy detachable, fixed portal plays to rise equipment, includes the counter weight arm, fixedly connected with portal stand on the counter weight arm, the top fixedly connected with portal crossbeam of portal stand, the last fixed surface of portal crossbeam is connected with the longeron, swing joint has the lug on the longeron, be connected with long chain block on the lug, bear a plurality of counterweight plate on the counter weight arm, all install supporting component on the counterweight plate, still be equipped with the connecting hole of being connected with long chain block on the counterweight plate.
Furthermore, a positioning piece is fixedly connected to the counterweight arm, and a positioning groove is formed in the upper surface of the positioning piece.
Further, the supporting component comprises a supporting rod, guide wheels and a reset spring, the supporting rod is matched with the positioning groove, one end of the supporting rod is fixedly connected to the counterweight plate, the other end of the supporting rod is connected with the two guide wheels through hinge rods in a bilateral symmetry mode, the guide wheels are arranged on the inner side of the positioning piece, and the two guide wheels are connected with the same reset spring between the hinge rods.
Further, be equipped with the brake structure on the lug, the brake structure includes wheel hub, locking pole, regulation pole and position sleeve, wheel hub is equipped with two and equal fixed mounting in one side of the relative longeron upper surface of lug, two wheel hub passes through the connecting axle, locking pole lateral sliding sets up and is used for locking wheel hub to rotate on the connecting axle, wheel hub's one end rotation is kept away from to the locking pole is connected with the connecting rod, the one end rotation that the locking pole was kept away from to the connecting rod is connected on adjusting the pole, the one end that the connecting rod was kept away from to the regulation pole freely runs through the lug and extends to the top of lug, the fixed setting of position sleeve just covers the outside of establishing at the regulation pole on the lug, the top of position sleeve rotates and is connected with adjusting nut, adjusting nut passes through screw thread accordant connection with the regulation pole.
The invention also discloses a dismounting method of the simple detachable and fixed gantry lifting equipment, which comprises the following steps:
s1, adjusting the adjusting nut to enable the adjusting rod to move upwards to drive the locking rod to move towards the center of the connecting shaft, unlocking the wheel hub, pushing the lifting lugs to the upper side of the counterweight sheets, lifting the counterweight sheets one by one through the hooks of the long-chain block, enabling the supporting rods on the counterweight sheets to be separated from the positioning grooves on the positioning piece, then slowly pushing the lifting lugs, enabling the counterweight sheets to synchronously move on the counterweight arms under the action of the guide wheels and the reset springs until all the counterweight sheets are completely unloaded onto the roof of the skirt building, and completely moving the counterweight sheets by using horizontal transportation equipment;
s2, when the truck crane moves to the position that the center of the cargo boom is within the slewing radius of the truck crane, the cargo boom is removed by the truck crane;
s3, after the crane boom is dismantled, the position of the crane boom is left empty, the space in front can ensure the tower crane to be used in a rotating mode, the brake pad of the rotating mechanism of the tower crane is loosened, the weight arm is dragged to rotate to the position of the original crane boom by a hemp rope, the turning radius of the weight arm is reduced in a doubling mode, and the weight arm and other parts of the tower crane are dismantled by the truck crane again until the whole tower crane is dismantled.
Compared with the prior art, the invention can obtain the following technical effects:
the invention is provided with a counterweight arm, a gantry upright post, a gantry beam, a longitudinal beam, a lifting lug, a counterweight sheet, a long chain block and a support component, wherein the lifting lug is movably arranged on the longitudinal beam, the counterweight sheet can freely move on the counterweight arm by lifting the counterweight sheet through the long chain block, the counterweight sheet is moved to the roof of the apron building through the movable lifting lug, the counterweight sheet is transported away by utilizing transportation equipment, and finally the crane boom and the counterweight arm 1 are dismantled, thereby greatly improving the dismantling efficiency and saving the construction cost.
When the counterweight plate is suspended on the counterweight arm, the support rod presses the support rod downwards under the action of the gravity of the counterweight plate so as to be matched in the positioning groove, and the guide wheel is positioned on the inner side of the positioning piece; when the counterweight plate is hoisted, the reset spring acts on the inner side of the positioning piece by the two hinge rods, so that the guide wheels are positioned, and the stability of the overall structure is prevented from being influenced by the swinging caused by the forward and backward movement when the counterweight plate is hoisted.
The lifting lug is also provided with a brake structure which specifically comprises an adjusting nut, a hub, a locking rod and a positioning sleeve, the adjusting nut is adjusted to drive the adjusting rod to move upwards, then the connecting rod drives the locking rod to move towards the middle of the connecting shaft, the locking rod unlocks the hub, and then the lifting lug can be moved to unload the counterweight sheets; the adjusting rod is driven to move downwards through the adjusting nut, then the locking rod is driven to move towards one side, close to the hub, of the connecting shaft through the connecting rod, the locking rod locks the hub, and the lifting lug is fixed at the current position.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a side view of the overall structure of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is an enlarged view of a portion of FIG. 2 at B;
figure 5 is a side view of the connection between the spacer and the support assembly of the present invention.
In the figure: 1. a counterweight arm; 11. a positioning member; 12. positioning a groove; 2. a portal column; 3. a gantry beam; 4. a stringer; 5. lifting lugs; 51. a hub; 52. a lock lever; 53. adjusting a rod; 54. a positioning sleeve; 55. adjusting the nut; 6. a weight plate; 61. a return spring; 62. a support bar; 63. a guide wheel; 7. a long chain block; 8. and connecting the holes.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1:
as shown in fig. 1, fig. 2, fig. 4, fig. 5, a simple detachable fixed gantry lifting device, including a counterweight arm 1, four gantry columns 2 are symmetrically and fixedly connected to the upper surface of the counterweight arm 1, a gantry beam 3 is fixedly connected to the tops of two opposite gantry columns 2, a longitudinal beam 4 is fixedly connected to the upper surface of the gantry beam 3, a lifting lug 5 is movably connected to the longitudinal beam 4, a long-chain block 7 is connected to the lifting lug 5, a plurality of counterweight plates 6 are loaded on the counterweight arm 1, supporting components are installed on the counterweight plates 6, the counterweight plates 8 are suspended on the counterweight arm 1 through the supporting components, and connecting holes 8 connected with the long-chain block 7 are further formed in the counterweight plates 6. Utilize long chain block 7 to lift up counterweight 6, moving counterweight 6 to the skirt building roof department through removing lug 5, at last demolish jib loading boom and counterweight arm 1 can, improve its efficiency of demolising greatly, practice thrift its construction cost.
In this embodiment, it is further preferable that a positioning member 11 is fixedly connected to the counterweight arm 1, a positioning slot 12 is formed in an upper surface of the positioning member 11, and the positioning member 11 is used to position-limit the counterweight plates 6.
Further preferred scheme in this embodiment, supporting component includes bracing piece 62, leading wheel 63 and reset spring 61, bracing piece 62 and constant head tank 12 adaptation, the one end fixed connection of bracing piece 62 is on the weight piece 6, the other end rotates and is connected with two articulated arms and connects the leading wheel 63 that corresponds through the articulated arm, leading wheel 63 sets up the inboard at setting element 11, be connected with same reset spring 61 between two articulated arms, when weight piece 6 is mentioned, reset spring 61 will be used to two articulated arms and cause leading wheel 63 still to move at the inboard of setting element 11, prevent to appear when lifting by crane weight piece 6 that the back-and-forth movement leads to the fact to rock the stability that influences overall structure.
Example 2:
as shown in fig. 2 and 3, based on the embodiment 1, it is further preferable that the lifting lug 5 is provided with a braking structure, the braking structure comprises a hub 51 and a locking rod 52, adjust pole 53 and position sleeve 54, wheel hub 51 is equipped with two and equal fixed mounting in the one side of the relative longeron 4 upper surface of lug 5, two wheel hub 51 connect into whole through the connecting axle, locking pole 52 lateral sliding sets up and is used for locking wheel hub 51 to rotate on the connecting axle, the locking pole is kept away from the one end rotation of wheel hub 51 and is connected with the connecting rod, the one end rotation connection that locking pole 52 was kept away from to the connecting rod is on adjusting pole 53, adjust the top that pole 53 kept away from the one end of connecting rod and freely run through lug 5 and extend to lug 5, the fixed setting of position sleeve 54 is on lug 5 and the cover is established in the outside of adjusting pole 53, the top of position sleeve 54 is rotated and is connected with adjusting nut 55, adjusting nut 55 passes through screw thread accordant connection with adjusting pole 53. The adjusting nut 55 is adjusted to drive the adjusting rod 53 to move upwards, then the connecting rod drives the locking rod 52 to move towards the middle of the connecting shaft, the locking rod 52 unlocks the hub 51, and then the lifting lug 5 can be moved to unload the weight plate 6; the adjusting rod 53 is driven to move downwards by adjusting the adjusting nut 55, then the locking rod 52 is driven by the connecting rod to move towards one side of the connecting shaft, which is close to the hub 51, the locking rod 52 locks the hub 51, and the lifting lug 5 is fixed at the current position.
Example 3:
a method for dismounting simple detachable and fixed gantry lifting equipment is characterized by comprising the following steps:
s1, the adjusting rod 53 moves upwards to drive the locking rod to move towards the center of the connecting shaft by adjusting the adjusting nut 55, the hub 51 is unlocked, the lifting lugs 5 are pushed to the upper part of the counterweight sheets 6, the counterweight sheets 6 are lifted one by one through the hooks of the long chain block 7, the supporting rods 62 on the counterweight sheets 6 are separated from the positioning grooves 12 on the positioning piece 11, then the lifting lugs 5 are pushed slowly, the counterweight sheets 6 synchronously move on the counterweight arms 1 under the action of the guide wheels 63 and the reset springs 61 until all the counterweight sheets 6 are unloaded on the roof of the skirt building, and the counterweight sheets 6 are completely removed by horizontal transportation equipment;
s2, when the truck crane moves to the position that the center of the cargo boom is within the slewing radius of the truck crane, the cargo boom is removed by the truck crane;
s3, after the crane boom is dismantled, the position of the crane boom is left empty, the space in front can ensure the tower crane to be used in a rotating mode, the brake pad of the rotating mechanism of the tower crane is loosened, the weight arm 1 is dragged to rotate to the position of the original crane boom by a hemp, the turning radius of the weight arm 1 is reduced in a doubling mode, and the weight arm 1 and other parts of the tower crane are dismantled by the truck crane again until the whole tower crane is dismantled.
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.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (3)
1. The simple detachable and fixed gantry lifting equipment comprises a counterweight arm (1), and is characterized in that a gantry upright post (2) is fixedly connected to the counterweight arm (1), a gantry beam (3) is fixedly connected to the top of the gantry upright post (2), a longitudinal beam (4) is fixedly connected to the upper surface of the gantry beam (3), a lifting lug (5) is movably connected to the longitudinal beam (4), a long-chain hand chain hoist (7) is connected to the lifting lug (5), a plurality of counterweight sheets (6) are loaded on the counterweight arm (1), supporting assemblies are mounted on the counterweight sheets (6), and connecting holes (8) connected with the long-chain hand chain hoist (7) are further formed in the counterweight sheets (6);
a positioning piece (11) is fixedly connected to the counterweight arm (1), and a positioning groove (12) is formed in the upper surface of the positioning piece (11);
the supporting component comprises a supporting rod (62), guide wheels (63) and a reset spring (61), the supporting rod (62) is matched with the positioning groove (12), one end of the supporting rod (62) is fixedly connected to the counterweight plate (6), the other end of the supporting rod is connected with two guide wheels (63) through hinge rods in a bilateral symmetry mode, the guide wheels (63) are arranged on the inner side of the positioning part (11), and the two guide wheels are connected with the same reset spring (61) between the hinge rods.
2. The simple detachable fixed gantry lifting device as claimed in claim 1, wherein a brake structure is arranged on the lifting lug (5), the brake structure comprises a hub (51), a locking rod (52), an adjusting rod (53) and a positioning sleeve (54), the hub (51) is provided with two parts, and both of the two parts are fixedly mounted on one side of the lifting lug (5) opposite to the upper surface of the longitudinal beam (4), the two hubs (51) are connected through a connecting shaft, the locking rod (52) is transversely slidably arranged on the connecting shaft for locking the rotation of the hub (51), one end of the locking rod, far away from the hub (51), is rotatably connected with a connecting rod, one end of the connecting rod, far away from the locking rod (52), is rotatably connected to the adjusting rod (53), and one end of the adjusting rod (53), far away from the connecting rod, freely penetrates through the lifting lug (5) and extends above the lifting lug (5), the positioning sleeve (54) is fixedly arranged on the lifting lug (5) and covers the outer side of the adjusting rod (53), the top of the positioning sleeve (54) is rotatably connected with an adjusting nut (55), and the adjusting nut (55) is in threaded matching connection with the adjusting rod (53).
3. A method of dismantling a simple detachable fixed gantry lifting apparatus as claimed in claim 2, comprising the steps of:
s1, the adjusting rod (53) is moved upwards to drive the locking rod to move towards the center of the connecting shaft by adjusting the adjusting nut (55), the hub (51) is unlocked, the lifting lugs (5) are pushed to the upper side of the counterweight sheets (6), the counterweight sheets (6) are lifted one by one through the hooks of the long-chain block (7), the supporting rods (62) on the counterweight sheets (6) are separated from the positioning grooves (12) on the positioning piece (11), then the lifting lugs (5) are pushed slowly, the counterweight sheets (6) synchronously move on the counterweight arms (1) under the action of the guide wheels (63) and the reset springs (61) until all the counterweight sheets (6) are completely unloaded on the roof of the skirt building, and the counterweight sheets (6) are completely moved away by horizontal transportation equipment;
s2, when the truck crane moves to the position that the center of the cargo boom is within the slewing radius of the truck crane, the cargo boom is removed by the truck crane;
s3, after the crane boom is dismantled, the position of the crane boom is left empty, the space in front can ensure the tower crane to be used in a rotating mode, the brake pad of the rotating mechanism of the tower crane is loosened, the weight arm (1) is dragged to rotate to the position of the original crane boom by a hemp, the turning radius of the weight arm (1) is reduced in a doubling mode, and the weight arm (1) and other parts of the tower crane are dismantled by the truck crane again until the whole tower crane is dismantled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010377849.6A CN111410128B (en) | 2020-05-07 | 2020-05-07 | Simple detachable and fixed gantry lifting equipment and detaching method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010377849.6A CN111410128B (en) | 2020-05-07 | 2020-05-07 | Simple detachable and fixed gantry lifting equipment and detaching method |
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| Publication Number | Publication Date |
|---|---|
| CN111410128A CN111410128A (en) | 2020-07-14 |
| CN111410128B true CN111410128B (en) | 2022-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010377849.6A Active CN111410128B (en) | 2020-05-07 | 2020-05-07 | Simple detachable and fixed gantry lifting equipment and detaching method |
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| CN (1) | CN111410128B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203295087U (en) * | 2013-05-24 | 2013-11-20 | 浙江省建设机械集团有限公司 | High-altitude counterweight assembly and disassembly device |
| CN104386599A (en) * | 2014-11-25 | 2015-03-04 | 广西大学 | Balancing weight moving and clamping device for tower crane |
| CN104495645A (en) * | 2014-12-31 | 2015-04-08 | 徐州建机工程机械有限公司 | Structure capable of mounting and dismounting balancing weight automatically by tower crane |
| CN205114903U (en) * | 2015-11-21 | 2016-03-30 | 广东庞源工程机械有限公司 | Demolition structure of tower crane counter weight |
| CN205222535U (en) * | 2015-12-24 | 2016-05-11 | 湖南建工华旺租赁有限公司 | Dismounting device of tower machine balancing weight piece |
| CN206375600U (en) * | 2016-12-26 | 2017-08-04 | 广东庞源工程机械有限公司 | A kind of adjustable counterweight self-unloading frame |
| CN210193239U (en) * | 2019-04-22 | 2020-03-27 | 中天建设集团有限公司 | Supplementary portal frame device of dismantling construction tower crane counterweight |
-
2020
- 2020-05-07 CN CN202010377849.6A patent/CN111410128B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203295087U (en) * | 2013-05-24 | 2013-11-20 | 浙江省建设机械集团有限公司 | High-altitude counterweight assembly and disassembly device |
| CN104386599A (en) * | 2014-11-25 | 2015-03-04 | 广西大学 | Balancing weight moving and clamping device for tower crane |
| CN104495645A (en) * | 2014-12-31 | 2015-04-08 | 徐州建机工程机械有限公司 | Structure capable of mounting and dismounting balancing weight automatically by tower crane |
| CN205114903U (en) * | 2015-11-21 | 2016-03-30 | 广东庞源工程机械有限公司 | Demolition structure of tower crane counter weight |
| CN205222535U (en) * | 2015-12-24 | 2016-05-11 | 湖南建工华旺租赁有限公司 | Dismounting device of tower machine balancing weight piece |
| CN206375600U (en) * | 2016-12-26 | 2017-08-04 | 广东庞源工程机械有限公司 | A kind of adjustable counterweight self-unloading frame |
| CN210193239U (en) * | 2019-04-22 | 2020-03-27 | 中天建设集团有限公司 | Supplementary portal frame device of dismantling construction tower crane counterweight |
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| Publication number | Publication date |
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| CN111410128A (en) | 2020-07-14 |
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