CN112479065A - Rotary platform for tower crane - Google Patents
Rotary platform for tower crane Download PDFInfo
- Publication number
- CN112479065A CN112479065A CN202011274270.3A CN202011274270A CN112479065A CN 112479065 A CN112479065 A CN 112479065A CN 202011274270 A CN202011274270 A CN 202011274270A CN 112479065 A CN112479065 A CN 112479065A
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- gear
- rotary
- bearing
- tower crane
- platform
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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
- B66C23/86—Slewing gear hydraulically actuated
Abstract
The invention discloses a rotary platform for a tower crane, which comprises a base, a rotary table, a driving mechanism and a rotary mechanism, wherein the upper end of the base is fixedly connected with the rotary table, a plurality of shock absorbers are arranged between the rotary table and the base, a bearing plate is welded on the surface of the rotary table, a first fixing frame is fixedly connected with the rotary table through the bearing plate, a hydraulic cylinder is arranged at the bottom end of the bearing plate, the output end of the hydraulic cylinder is fixedly connected with the bearing plate, and the driving mechanism is connected with the upper end surface of the rotary table through bolts. According to the invention, two slewing bearings are arranged at two ends of the main column, and the outer edge of the slewing bearing at the upper end of the main shaft is provided with the gear plate, the fixing plate and the reinforcing rib, so that the stability of the main shaft in the slewing table is reinforced.
Description
Technical Field
The invention relates to the technical field of cranes, in particular to a rotary platform for a tower crane.
Background
The crane refers to a multi-action crane for vertically lifting and horizontally carrying heavy objects within a certain range. Also known as crown blocks, navigation cranes and cranes.
The hoisting equipment has the working characteristics of intermittent movement, namely corresponding mechanisms for taking materials, transporting, unloading and the like in one working cycle alternately work, so that the development and the use of the crane on the market are more and more extensive. Because the weight is lifted without the supporting legs and the lifted weight is frequently used for driving, the driving speed is higher than that of a crawler crane (crawler crane); the operation is stable, the lifting capacity is large, the lifting can be carried out within a specific range, but the road is required to be smooth and firm, the tire air pressure meets the requirement, and the lifting distance from the ground is not more than 50 CM; long distance walking with load is prohibited. In order to ensure the operation safety, the lifting operation without landing legs is basically forbidden in China at present. The crane is matched with steel wire ropes of various types including phosphated coated steel wire ropes, galvanized steel wire ropes and polished steel wire ropes.
The rotary platform enables an extremely important component in the tower crane, and when the tower crane is higher in height and used for lifting heavy objects, the tower crane is fixedly connected with the base through the rotary support, so that the stress between the rotary mechanism and the base is uneven, the rotary mechanism is inclined and shaken under the influence of wind power and gravity separation of the wind power, and the stability of the rotary mechanism is poor.
Disclosure of Invention
The invention aims to provide a rotary platform for a tower crane, which aims to solve the problems that when a heavy object is lifted by the tower crane with higher height, the rotary mechanism and a base are not uniformly stressed due to the fact that the rotary mechanism is fixedly connected with the base through a rotary support, the rotary mechanism is inclined and shaken under the influence of wind power and gravity and the like, and the stability of the rotary mechanism is poor.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a rotary platform for tower crane, includes base, revolving platform, actuating mechanism and rotation mechanism, the upper end fixedly connected with revolving platform of base, be provided with a plurality of bumper shock absorbers between revolving platform and the base, it is a plurality of the even equidistance of bumper shock absorber is arranged between revolving platform and base, the bottom four corners welding of base has the second mount, the skin weld of revolving platform has the loading board, the upper end skin weld of loading board has first mount, first mount passes through loading board and revolving platform fixed connection, the bottom of loading board is provided with the pneumatic cylinder, the output and the loading board fixed connection of pneumatic cylinder, the bottom and the base bolted connection of pneumatic cylinder, revolving platform upper end surface bolted connection has actuating mechanism.
Preferably, the revolving platform includes supporting frame, mounting hole, bearing, strengthening rib, fixed plate and toothed plate, the mounting hole has been seted up on supporting frame's top surface, and the mounting hole runs through supporting frame, supporting frame internal weld has the fixed plate, the bottom of fixed plate is provided with the strengthening rib, the one side and the fixed plate fixed connection of strengthening rib, the inner wall fixed connection of another side and supporting frame, the upper end surface joint of fixed plate has the bearing, the upper end surface of bearing is provided with toothed plate.
Preferably, actuating mechanism includes driving motor, reduction gear, transmission shaft and gear, the driving motor bolt mounting is on the upper end surface of revolving platform, one side bolted connection that driving motor was kept away from to the revolving platform has the reduction gear, driving motor's output and reduction gear transmission are connected, the output of reduction gear and the one end fixed connection of transmission shaft, driving motor passes through the reduction gear and is connected with the transmission shaft transmission, the other end of transmission shaft runs through supporting frame and gear fixed connection, the reduction gear passes through the transmission shaft and is connected with gear transmission.
Preferably, the slewing mechanism comprises a main shaft, a first slewing bearing, a second slewing bearing and a gear shaft, wherein one end of the main shaft is rotatably connected with the first slewing bearing, the other end of the main shaft is rotatably connected with the second slewing bearing, the first slewing bearing is in transmission connection with the second slewing bearing through the main shaft, and the gear shaft is arranged on the bottom end surface of the second slewing bearing.
Preferably, the first slewing bearing comprises a first outer ring, a first inner ring, a first rolling body and an inner gear edge, the first rolling body is arranged between the first outer ring and the first inner ring, the first outer ring is in rolling connection with the first inner ring through the first rolling body, the first inner ring is located inside the first outer ring, and the inner gear edge is arranged on the surface of the inner wall of the first inner ring.
Preferably, the second slewing bearing comprises a second outer ring, a second inner ring, a second rolling body and an outer gear edge, the second rolling body is arranged between the second outer ring and the second inner ring, the second outer ring is in rolling connection with the second inner ring through the second rolling body, the second inner ring is located inside the second outer ring, and the outer gear edge is arranged on the outer wall surface of the second outer ring.
Preferably, the gear shaft is fixedly installed on the bottom end surface of the second outer ring, the gear shaft is fixedly installed at the bottom end of the second slewing bearing through the second outer ring, and the second slewing bearing is fixedly connected with the fixing plate through the gear shaft.
Preferably, the gear is meshed with the outer gear, and the driving motor is in transmission connection with the second rotary support through the gear.
Preferably, the upper end surface of the rotary table is provided with a plurality of driving mechanisms, the driving mechanisms are arranged on the upper end surface of the rotary table at equal intervals, and the plurality of driving mechanisms run synchronously.
Preferably, the main shaft, the first slewing bearing and the second slewing bearing are coaxially arranged.
Compared with the prior art, the invention provides a rotary platform for a tower crane, which has the following beneficial effects:
the two ends of the main column are provided with two slewing bearings, the outer edge of the slewing bearing at the upper end of the main shaft is provided with the gear plate, the fixing plate and the reinforcing ribs, the stability of the main shaft in the slewing table is reinforced, meanwhile, four corners of the bottom end of the outer side of the slewing table are provided with the hydraulic cylinders, the gear plate, the fixing plate and the reinforcing ribs, the stability of the slewing mechanism in the slewing table is enhanced under the action of the hydraulic cylinders, the gear plate, the fixing plate and the reinforcing ribs, and meanwhile, the slewing table is fixedly connected with the base through the hydraulic cylinders and the main shaft, so that the force of the slewing mechanism in the slewing table is uniformly applied, the stability between the slewing table.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention without limiting the invention in which:
FIG. 1 is a schematic structural diagram of a rotary platform according to the present invention;
FIG. 2 is a schematic structural diagram of a turntable according to the present invention;
FIG. 3 is a schematic top view of a turntable according to the present invention;
fig. 4 is a schematic view of a first slewing bearing structure according to the present invention;
FIG. 5 is a schematic view of a second pivoting support structure according to the present invention;
FIG. 6 is a schematic view of a gear engagement structure according to the present invention;
in the figure: 1. a base; 2. a turntable; 21. a support frame; 22. mounting holes; 23. a bearing; 24. reinforcing ribs; 25. a fixing plate; 26. a gear plate; 3. a drive mechanism; 31. a drive motor; 32. a speed reducer; 33. a drive shaft; 34. a gear; 4. a first fixing frame; 5. a carrier plate; 6. a hydraulic cylinder; 7. a shock absorber; 8. a second fixing frame; 9. a swing mechanism; 91. a main shaft; 92. a first slewing bearing; 921. a first outer race; 922. a first inner race; 923. a first rolling element; 924. an inner gear edge; 93. a second slewing bearing; 931. a second outer race; 932. a second inner race; 933. a second rolling element; 934. an outer gear side; 94. a gear shaft.
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. 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 invention.
Referring to fig. 1-4, the present invention provides a technical solution: a rotary platform for a tower crane comprises a base 1, a rotary table 2, a driving mechanism 3 and a rotary mechanism 9, wherein the upper end of the base 1 is fixedly connected with the rotary table 2, a plurality of shock absorbers 7 are arranged between the rotary table 2 and the base 1, the shock absorbers 7 are uniformly and equidistantly arranged between the rotary table 2 and the base 1, one end of each shock absorber 7 is attached to the rotary table 2, the other end of each shock absorber 7 is attached to a base 0 and is used for lifting a heavy object in the operation of the rotary table 2 to relieve the gravity pressure driven by the heavy object, so that the shaking between the rotary table 2 and the base 1 is relieved, second fixing frames 8 are welded at four corners of the bottom end of the base 1 and used for installing the base 1 on a fixing frame of the tower crane, a bearing plate 5 is welded on the surface of the rotary table 2, a first fixing frame 4 is welded on the surface of the upper end of the bearing plate 5 and used, first mount 4 passes through loading board 5 and 2 fixed connection of revolving platform, the bottom of loading board 5 is provided with pneumatic cylinder 6, the output and the loading board 5 fixed connection of pneumatic cylinder 6, pneumatic cylinder 6 passes through loading board 5 and 2 fixed connection of revolving platform, and do upwards ejecting power with revolving platform 2, alleviate the pressure that revolving platform 2 hoisted the heavy object, set up pneumatic cylinder 6 in the four corners of revolving platform 2, and the pneumatic cylinder synchronous operation in four corners, make the atress of revolving platform 2 more even, thereby better stable revolving platform, the bottom and the base 1 bolted connection of pneumatic cylinder 6, 2 upper end surface bolted connections of revolving platform have actuating mechanism 3.
Specifically, the turntable 2 comprises a supporting frame 21, a mounting hole 22, a bearing 23, reinforcing ribs 24, a fixing plate 25 and a gear plate 26, wherein the top end surface of the supporting frame 21 is provided with the mounting hole 22, the mounting hole 22 penetrates through the supporting frame 21, the supporting frame 21 is internally welded with the fixing plate 25, the fixing plate 25 is used for placing the bearing 23, one surface of the fixing plate 25, provided with the reinforcing ribs 24 at the bottom end, is fixedly connected with the fixing plate 25, and the other surface of the fixing plate 25 is fixedly connected with the inner wall of the supporting frame 21, the reinforcing ribs 24 are provided with a plurality of reinforcing ribs 24 which are uniformly and equidistantly arranged around the fixing plate 25, the reinforcing and stabilizing fixing plate 25 is arranged inside the supporting frame 21 to enable the fixing plate 25 to be more stable, the bearing 23 is clamped on the upper end surface of the fixing plate 25, the gear plate 26 is arranged on the upper, so that the effect of the run has been achieved by the gear plate 26 rotating on the inner ring of the bearing 23.
Specifically, the driving mechanism 3 includes a driving motor 31, a speed reducer 32, a transmission shaft 33 and a gear 34, the driving motor 31 is installed on the upper end surface of the rotary table 2 by bolts, the speed reducer 32 is connected to one side of the rotary table 2 away from the driving motor 31 by bolts, the speed reducer 32 reduces the speed of the driving motor 31 driving the transmission shaft 33, so that the driving gear 34 which is more stable drives the second rotary support 93 to operate, the output end of the driving motor 31 is connected with the speed reducer 32 in a transmission manner, the output end of the speed reducer 32 is fixedly connected with one end of the transmission shaft 33, the driving motor 31 is connected with the transmission shaft 33 by the speed reducer 32 in a transmission manner, the other end of the transmission shaft 33 penetrates through the supporting frame 21 and is fixedly connected with the gear 34, the speed reducer 32 is connected with the gear 34 by the transmission shaft 33 in a, the gear 34 engages the outer gear edge 934, which rotates the second outer ring 931.
Specifically, the swing mechanism 9 includes a main shaft 91, a first swing bearing 92, a second swing bearing 93, and a gear shaft 94, wherein the main shaft 91, the first swing bearing 92, and the second swing bearing 93 are coaxially disposed so as to rotate the main shaft 91 inside the support frame 21 via the driving motor 31, one end of the main shaft 91 is rotatably connected with the first swing bearing 92, and the other end is rotatably connected with the second swing bearing 93, the first swing bearing 92 is in transmission connection with the second swing bearing 93 via the main shaft 91, the gear shaft 94 is disposed on the bottom end surface of the second swing bearing 93, and the gear shaft 94 is engaged with the gear plate 26 and is rotatably connected with the bearing 23 via the gear plate 26, so as to rotate the second swing bearing 93 inside the support frame 21.
Specifically, the first slewing bearing 92 includes a first outer ring 921, a first inner ring 922, a first rolling element 923 and an inner gear edge 924, the first rolling element 923 is disposed between the first outer ring 921 and the first inner ring 922, the first rolling element 923 may be a ball or a roller, the first outer ring 921 is in rolling connection with the first inner ring 922 through the first rolling element 923, the first inner ring 922 is located inside the first outer ring 921, the first inner ring 922 rolls inside the first outer ring 922 through the rolling element, the inner gear edge 924 is disposed on an inner wall surface of the first inner ring 922, the main shaft 91 is provided with a gear shaft matched with the inner gear edge 924, so that the bottom end of the main shaft 91 is rotatably connected with the first outer ring 921 through the first inner ring 922.
Specifically, the second rotary support 93 includes a second outer ring 931, a second inner ring 932, a second rolling element 933, and an outer gear edge 934, the second rolling element 933 is disposed between the second outer ring 931 and the second inner ring 932, the second rolling element 933 may be a ball or a roller, the second outer ring 931 is in rolling connection with the second inner ring 932 through the second rolling element 933, the top end of the main shaft 91 is in bolted connection with the second outer ring 931, the second inner ring 932 is located inside the second outer ring 931, the outer wall surface of the second outer ring 931 is provided with an outer gear edge 934, the gear 34 is engaged with the outer gear edge 934, under the driving of the driving motor 31, the gear 34 drives the second outer ring 931 to rotate so as to rotate the second rotary support 93, and the second rotary support 93 drives the main shaft 91 to rotate so as to rotate the first inner ring 932 inside the first outer ring 931, thereby implementing the operation of the rotary mechanism 9.
Specifically, the gear shaft 94 is fixedly mounted on the bottom end surface of the second outer ring 931, the gear shaft 94 is fixedly mounted on the bottom end of the second rotary support 93 through the second outer ring 931, the second rotary support 93 is fixedly connected with the fixing plate 25 through the gear shaft 94, the gear 34 is meshed with the outer gear 934, the driving motor 31 is in transmission connection with the second rotary support 93 through the gear 34, when the driving motor 31 drives the gear 34 to rotate, the second rotary bearing 93 rotates and is meshed with the gear plate 26 arranged at the upper end of the fixed plate 25 through the gear shaft 94, the second rotary bearing 93 rotates at the upper end of the fixed plate 26 under the action of the bearing 23, the fixed plate 26 simultaneously provides a certain supporting effect for the second rotary bearing 93, partial force applied to the second rotary bearing is dispersed to the base 1 through the combined bearing frame 21 and the hydraulic cylinder 6, the rotary mechanism 9 is uniformly stressed on the base 1, and the stability of the rotary mechanism 1 is improved.
Specifically, the upper end surface of the rotary table 2 is provided with the plurality of driving mechanisms 3, the driving mechanisms 3 are equidistantly arranged on the upper end surface of the rotary table 2, the plurality of driving mechanisms 3 synchronously operate, and the driving motors 31 of the plurality of driving mechanisms 3 simultaneously drive the plurality of gears 34 to rotate the second rotary support 93, so that the second rotary support 93 is more stable in operation, the stability of the second rotary support 93 is improved, and the second rotary support 93 plays a role in rotation, so that the stability of the rotary mechanism 9 is improved.
The working principle and the using process of the invention are as follows: after the invention is installed, when the invention is used without errors in inspection, the driving motor 31 is started to drive the transmission shaft 33 to rotate, the transmission shaft 33 drives the gear 34 to rotate, the gear 34 is meshed with the outer gear edge 934 to drive the second outer ring 931 to rotate, the second outer ring 931 drives the second rotary support 93 to rotate, the second rotary support 93 rotates at the upper end of the fixed plate 25 under the meshing action of the gear shaft 94 and the gear plate 26, so that the second rotary support 93 drives the main shaft 91 to operate, meanwhile, the fixed plate 25 has certain bearing capacity on the second rotary support 93, and the received force is transmitted to the base 1 through the support frame 21 and the hydraulic cylinder 6, the stress of the rotary mechanism 9 is more uniformly distributed on the base 1, and meanwhile, the hydraulic cylinder 6 exerts upward acting force on the rotary table 2, so that the four corners of the rotary table 2 are stressed more stably, thereby the stability between the rotary table 2 and the base 1 is enhanced, thereby improving the stability between the swing mechanism 9 and the base 1.
In summary, the invention has the advantages that:
the two ends of the main column are provided with two slewing bearings, the outer edge of the slewing bearing at the upper end of the main shaft is provided with the gear plate, the fixing plate and the reinforcing ribs, the stability of the main shaft in the slewing table is reinforced, meanwhile, four corners of the bottom end of the outer side of the slewing table are provided with the hydraulic cylinders, the gear plate, the fixing plate and the reinforcing ribs, the stability of the slewing mechanism in the slewing table is enhanced under the action of the hydraulic cylinders, the gear plate, the fixing plate and the reinforcing ribs, and meanwhile, the slewing table is fixedly connected with the base through the hydraulic cylinders and the main shaft, so that the force of the slewing mechanism in the slewing table is uniformly applied, the stability between the slewing table.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a rotary platform for tower crane, includes base (1), revolving platform (2), actuating mechanism (3) and rotation mechanism (9), its characterized in that: the upper end of the base (1) is fixedly connected with a rotary table (2), a plurality of shock absorbers (7) are arranged between the rotary table (2) and the base (1), the shock absorbers (7) are uniformly and equidistantly arranged between the rotary table (2) and the base (1), the four corners of the bottom end of the base (1) are welded with second fixing frames (8), the surface of the rotary table (2) is welded with a bearing plate (5), the upper end surface of the bearing plate (5) is welded with a first fixing frame (4), the first fixing frame (4) is fixedly connected with the rotary table (2) through a bearing plate (5), the bottom end of the bearing plate (5) is provided with a hydraulic cylinder (6), the output end of the hydraulic cylinder (6) is fixedly connected with the bearing plate (5), the bottom end of the hydraulic cylinder (6) is connected with the base (1) through a bolt, and the surface of the upper end of the rotary table (2) is connected with a driving mechanism (3) through a bolt.
2. The rotary platform for a tower crane according to claim 1, wherein: revolving platform (2) are including supporting frame (21), mounting hole (22), bearing (23), strengthening rib (24), fixed plate (25) and gear plate (26), mounting hole (22) have been seted up on the top surface of supporting frame (21), and mounting hole (22) run through supporting frame (21), supporting frame (21) internal weld has fixed plate (25), the bottom of fixed plate (25) is provided with strengthening rib (24), the one side and fixed plate (25) fixed connection of strengthening rib (24), the inner wall fixed connection of another side and supporting frame (21), the upper end surface joint of fixed plate (25) has bearing (23), the upper end surface of bearing (23) is provided with gear plate (26).
3. The rotary platform for a tower crane according to claim 1, wherein: actuating mechanism (3) are including driving motor (31), reduction gear (32), transmission shaft (33) and gear (34), driving motor (31) bolt mounting is on the upper end surface of revolving platform (2), one side bolted connection that driving motor (31) were kept away from in revolving platform (2) has reduction gear (32), the output and the reduction gear (32) transmission of driving motor (31) are connected, the output of reduction gear (32) and the one end fixed connection of transmission shaft (33), driving motor (31) are connected with transmission shaft (33) transmission through reduction gear (32), the other end of transmission shaft (33) runs through braced frame (21) and gear (34) fixed connection, reduction gear (32) are connected with gear (34) transmission through transmission shaft (33).
4. The rotary platform for a tower crane according to claim 1, wherein: the slewing mechanism (9) comprises a main shaft (91), a first slewing bearing (92), a second slewing bearing (93) and a gear shaft (94), one end of the main shaft (91) is rotatably connected with the first slewing bearing (92), the other end of the main shaft is rotatably connected with the second slewing bearing (93), the first slewing bearing (92) is in transmission connection with the second slewing bearing (93) through the main shaft (91), and the gear shaft (94) is arranged on the bottom end surface of the second slewing bearing (93).
5. The rotary platform for a tower crane according to claim 1, wherein: first slewing bearing (92) include first outer lane (921), first inner circle (922), first rolling element (923) and internal gear limit (924), be provided with first rolling element (923) between first outer lane (921) and first inner circle (922), first outer lane (921) is through first rolling element (923) and first inner circle (922) roll connection, first inner circle (922) are located inside first outer lane (921), first inner circle (922) inner wall surface is provided with internal gear limit (924).
6. The rotary platform for a tower crane according to claim 1, wherein: the second rotary support (93) comprises a second outer ring (931), a second inner ring (932), a second rolling body (933) and an outer gear edge (934), the second rolling body (933) is arranged between the second outer ring (931) and the second inner ring (932), the second outer ring (931) is in rolling connection with the second inner ring (932) through the second rolling body (933), the second inner ring (932) is located inside the second outer ring (931), and the outer wall surface of the second outer ring (931) is provided with the outer gear edge (934).
7. The rotary platform for a tower crane according to claim 1, wherein: the gear shaft (94) is fixedly installed on the bottom end surface of the second outer ring (931), the gear shaft (94) is fixedly installed at the bottom end of the second rotary support (93) through the second outer ring (931), and the second rotary support (93) is fixedly connected with the fixing plate (25) through the gear shaft (94).
8. The rotary platform for a tower crane according to claim 1, wherein: the gear (34) is meshed with the outer gear edge (934), and the driving motor (31) is in transmission connection with the second rotary support (93) through the gear (34).
9. The rotary platform for a tower crane according to claim 1, wherein: the upper end surface of revolving platform (2) is provided with a plurality of actuating mechanism (3), and actuating mechanism (3) equidistance is arranged at the upper end surface of revolving platform (2), and is a plurality of actuating mechanism (3) synchronous operation.
10. The rotary platform for a tower crane according to claim 1, wherein: the main shaft (91), the first rotary support (92) and the second rotary support (93) are coaxially arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011274270.3A CN112479065A (en) | 2020-11-15 | 2020-11-15 | Rotary platform for tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011274270.3A CN112479065A (en) | 2020-11-15 | 2020-11-15 | Rotary platform for tower crane |
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| Publication Number | Publication Date |
|---|---|
| CN112479065A true CN112479065A (en) | 2021-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011274270.3A Pending CN112479065A (en) | 2020-11-15 | 2020-11-15 | Rotary platform for tower crane |
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| CN (1) | CN112479065A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114941656A (en) * | 2022-05-13 | 2022-08-26 | 马鞍山经纬回转支承有限公司 | Novel slewing bearing for pile-winding crane |
-
2020
- 2020-11-15 CN CN202011274270.3A patent/CN112479065A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114941656A (en) * | 2022-05-13 | 2022-08-26 | 马鞍山经纬回转支承有限公司 | Novel slewing bearing for pile-winding crane |
| CN114941656B (en) * | 2022-05-13 | 2023-12-26 | 马鞍山经纬回转支承股份有限公司 | Novel slewing bearing for pile winding type crane |
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Application publication date: 20210312 |
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