CN112830406B - Tower crane rotation limiter in tower crane operation - Google Patents
Tower crane rotation limiter in tower crane operation Download PDFInfo
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- CN112830406B CN112830406B CN202110107255.8A CN202110107255A CN112830406B CN 112830406 B CN112830406 B CN 112830406B CN 202110107255 A CN202110107255 A CN 202110107255A CN 112830406 B CN112830406 B CN 112830406B
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- tower crane
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- gear ring
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- 238000009434 installation Methods 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
- B66C23/88—Safety gear
- B66C23/94—Safety gear for limiting slewing movements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention discloses a tower crane rotation limiter in tower crane operation, which comprises a rotation seat and a base which are distributed up and down, wherein the top of the base is rotationally connected with the bottom of the rotation seat through an external tooth rotation support, an outer ring of the external tooth rotation support is meshed with a driving gear, the driving gear is vertically rotationally arranged in a limiter mounting frame through a driving shaft, two limiting devices are arranged at the upper end and the lower end of the driving shaft, each limiting device comprises a bearing, an inner ring is fixedly connected with the outer wall of the driving shaft, a gear ring is rotationally connected on the outer ring of the bearing, a plurality of latches with consistent directions are uniformly distributed on the inner wall of the gear ring, a plurality of limiting ratchet structures are connected on the inner wall of the inner ring of the bearing, and extend to the inner wall of the gear ring and are matched with the latches; the directions of the clamping teeth on the upper limiting device and the lower limiting device are opposite. The directions of the clamping teeth on the upper limiting device and the lower limiting device are opposite, so that when the gear rings on the upper limiting device and the lower limiting device at different positions rotate, the driving shaft can be driven to rotate in different directions.
Description
Technical Field
The invention relates to the technical field of tower crane equipment, in particular to a tower crane rotation limiter in tower crane operation.
Background
The tower crane is a lifting device widely applied in building construction, and the lifting arm is rotated in the horizontal plane by a slewing mechanism, so that a lifting hook can cover a working surface. The crane boom of the tower crane is longer, and because the wind resistance of the crane boom side of the tower crane is far greater than the wind resistance of the balance arm side, when the tower crane is installed, constructed, lifted and dismantled, the wind which is unstable can easily blow the tower crane to rotate. Under increasingly complex construction conditions, interference between the crane boom and surrounding obstacles often occurs, and serious safety accidents are caused even more.
The rotary motion is generated by respectively arranging an upper support and a lower support on the inner country and the outer country of a rotary support, driving a pinion by a rotary motor, and driving the rotary upper support to carry out rotary motion relative to the lower support by the pinion in a corollary way, wherein a stroke limiter is generally arranged on the outer side of a rotary assembly, and the stroke limiter is used for sun-closing the large-tooth country of the rotary support through the pinion and the rotary support, and limiting a rotary sector area of the tower crane through adjusting the stroke limiter. Therefore, the tower crane rotation limiter is used for solving the problems in tower crane operation.
Disclosure of Invention
The invention aims to provide a tower crane rotation limiter in tower crane operation, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the tower crane rotation limiter comprises a rotation seat and a base which are vertically distributed, wherein one side of the rotation seat is fixedly connected with a mounting frame, the top of the base is rotationally connected with the bottom of the rotation seat through an external tooth rotation support, a driving gear is engaged on an outer ring of the external tooth rotation support and is vertically rotationally arranged in the limiter mounting frame through a driving shaft, and the limiter mounting frame is fixedly connected with the other side of the base;
the upper end and the lower end of the driving shaft are provided with two limiting devices, each limiting device comprises a bearing, the inner ring of each bearing is fixedly connected with the outer wall of the driving shaft, the outer ring of each bearing is rotatably connected with a gear ring, the inner wall of each gear ring is uniformly provided with a plurality of latches with consistent directions, the inner wall of each bearing inner ring is connected with a plurality of limiting ratchet structures, and each limiting ratchet structure extends towards the inner wall of each gear ring and is matched with each latch;
the directions of the clamping teeth on the upper limiting device and the lower limiting device are opposite;
the driving assembly is arranged in a limiter mounting frame outside the limiting device and comprises a first hydraulic cylinder horizontally arranged in the limiter mounting frame, a movable frame is fixedly connected with a driving end of the first hydraulic cylinder, a sliding frame is arranged in the movable frame in a sliding mode along the length direction of the movable frame, a driving chain plate is arranged in the sliding frame in parallel, the driving chain plate is movably meshed with a gear ring on the limiting device, and one side of the sliding frame is fixedly connected with the end portion of the movable frame through a second hydraulic cylinder.
Preferably, the inner ring of the external tooth rotary support is fixedly connected with the top of the base, and the outer ring of the external tooth rotary support is fixedly connected with the bottom of the rotary base.
Preferably, the limiter mounting frame is of a hollow cavity structure and is fixedly mounted on the base through bolts, the middle part of the driving shaft is fixedly connected with a mounting bearing, and the mounting bearing is fixedly connected with the inner wall of the limiter mounting frame.
Preferably, the outer wall of the driving shaft is fixedly connected with a plurality of connecting pieces extending outwards, and the outer ends of the connecting pieces are fixedly connected with the inner ring of the bearing.
Preferably, the gear ring is positioned at one side close to the bearing inner ring, the bearing outer ring extends to the gear ring direction to form a plurality of connecting sliding blocks, and the connecting sliding blocks are in sliding clamping connection with an annular sliding groove formed in the end face of the gear ring.
Preferably, the spacing ratchet structure includes the installation axle of fixed mounting on the bearing inner race, the epaxial ratchet that rotates of installation, ratchet cooperates with the latch on the ring gear inner wall, the epaxial winding of installation has the torsional spring, the one end and the ratchet connection of torsional spring, the other end is connected with the installation axle, under the torsional spring effect, ratchet and latch laminating.
Preferably, a limiting cavity for sliding the movable frame is formed in the limiter mounting frame, the limiter mounting frame horizontally moves in the limiting cavity, a dovetail groove is formed in one side, facing the gear ring, of the movable frame, a dovetail block matched with the dovetail groove is mounted at the bottom of the sliding frame, and the sliding frame slides on the movable frame along the length direction of the sliding frame.
Compared with the prior art, the invention has the beneficial effects that:
when the driving chain plate is meshed with the gear ring, the rotation of the gear ring is limited by the driving chain plate, the second hydraulic cylinder drives the driving chain plate to reciprocate on the movable frame, so that the gear ring repeatedly rotates positively and negatively, and when the rotation direction of the gear ring is limited by the limiting ratchet structure, the bearing inner ring is driven to rotate, so that the driving shaft rotates, the number of rotation turns of the driving shaft is controlled, the driving shaft is prevented from rotating too many, and the tower crane accident occurs due to the overlarge rotation angle of the external tooth rotary support.
When the driving chain plate is not meshed with the gear ring, the limiting device can rotate freely without limitation;
the directions of the clamping teeth on the upper limiting device and the lower limiting device are opposite, so that when the gear rings on the upper limiting device and the lower limiting device at different positions rotate, the driving shaft can be driven to rotate in different directions.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram illustrating the installation of a spacing device according to the present invention;
FIG. 3 is a schematic view of a limiting device according to the present invention;
FIG. 4 is a schematic view of the internal structure of the limiting device according to the present invention;
FIG. 5 is a schematic view of an explosion structure of a limiting device according to the present invention;
FIG. 6 is a schematic view of a limit ratchet according to the present invention;
in the figure: 101 base, 102 rotating seat, 103 mounting frame, 104 limiter mounting frame, 2 external tooth rotary support, 3 driving gear, 301 driving shaft, 302 mounting bearing and 303 connecting piece;
4, limiting device: 41 gear ring, 4101 latch, 4102 annular chute, 42 bearing, 4201 connecting slider, 43 spacing ratchet structure: 431 ratchet, 432 mounting shaft, 433 torsion spring;
5 drive assembly: 51, 52 first hydraulic cylinders, 53 sliding frames, 54 driving chain plates, 55 second hydraulic cylinders.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a tower crane gyration stopper in tower crane operation, includes rotation seat 102 and the base 101 that distributes the setting from top to bottom, and one side fixed connection mounting bracket 103 of rotation seat 102, base 101 top are rotated through external tooth gyration support 2 and are connected rotation seat 102 bottom, and the inner circle fixed connection base 101 top of external tooth gyration support 2, the outer lane of external tooth gyration support 2 and rotation seat 102 bottom fixed connection. The rotating seat 102 is connected with the base 101 through the external tooth rotary support 2 existing in the field, which belongs to the conventional technology in the field, and ensures the stability of the connection between the rotating seat 102 and the base 101.
The outer ring of the external tooth rotary support 2 is engaged with and connected with a driving gear 3, the driving gear 3 is vertically rotatably installed in a limiter installation frame 104 through a driving shaft 301, the limiter installation frame 104 is fixedly connected with the other side of the base 101, the limiter installation frame 104 is of a hollow cavity structure and is fixedly installed on the base 101 through bolts, the middle part of the driving shaft 301 is fixedly connected with a mounting bearing 302, and the mounting bearing 302 is fixedly connected with the inner wall of the limiter installation frame 104. The stopper mount 104 is used to mount a stopper.
The upper end and the lower end of the driving shaft 301 are provided with two limiting devices 4, each limiting device 4 comprises a bearing 42, the inner ring of each bearing 42 is fixedly connected with the outer wall of the driving shaft 301, a gear ring 41 is rotatably connected on the outer ring of each bearing 42, a plurality of latches 4101 with the same direction are uniformly distributed on the inner wall of each gear ring 41, a plurality of limiting ratchet structures 43 are connected on the inner wall of the inner ring of each bearing 42, and each limiting ratchet structure 43 extends towards the inner wall of each gear ring 41 and is matched with each latch 4101.
The limit ratchet structure 43 comprises a mounting shaft 432 fixedly mounted on the inner ring of the bearing 42, a ratchet 431 is rotatably connected to the mounting shaft 432, the ratchet 431 is matched with a latch 4101 on the inner wall of the gear ring 41, a torsion spring 433 is wound on the mounting shaft 432, one end of the torsion spring 433 is connected with the ratchet 431, the other end of the torsion spring 433 is connected with the mounting shaft 432, and the ratchet 431 is attached to the latch 4101 under the action of the torsion spring 433.
Further, in order to ensure the connection stability between the inner ring of the bearing 42 and the driving shaft 301, the outer wall of the driving shaft 301 is fixedly connected with a plurality of outwardly extending connecting members 303, and the outer ends of the connecting members 303 are fixedly connected with the inner ring of the bearing 42.
Further, in order to ensure the connection between the outer ring of the bearing 42 and the gear ring 41, and not to affect the free rotation of the gear ring 41, a plurality of connecting blocks 4201 extend toward the gear ring 41 on the outer ring of the bearing 42, and the connecting blocks 4201 are slidably engaged in a ring chute 4102 provided on the end surface of the gear ring 41.
More important is: the latches 4101 on the upper and lower limiting devices 4 are opposite in direction, so that when the gear rings 41 on the limiting devices 4 at different positions are rotated, the driving shaft 301 can be driven to rotate in different directions.
The drive assembly 5 is installed in the stopper mounting bracket 104 outside the stop device 4, the drive assembly 5 includes the first pneumatic cylinder 52 of horizontal installation in the stopper mounting bracket 104, the drive end rigid coupling of first pneumatic cylinder 52 has the movable frame 51, slidable mounting has the carriage 53 along its length direction in the movable frame 51, parallel mounting has the drive link joint 54 in the carriage 53, the movable engagement of ring gear 41 on drive link joint 54 and the stop device 4, and carriage 53 one side is through second pneumatic cylinder 55 and movable frame 51 tip rigid coupling.
A limiting cavity for sliding the movable frame 51 is formed in the limiter mounting frame 104, the limiter mounting frame 104 horizontally moves in the limiting cavity, a dovetail groove is formed in one side, facing the gear ring 41, of the movable frame 51, a dovetail block matched with the dovetail groove is mounted at the bottom of the sliding frame 53, and the sliding frame 53 slides on the movable frame 51 along the length direction of the sliding frame 53.
In the invention, two driving assemblies 5 are arranged to drive the upper limiting device 4 and the lower limiting device 4 respectively, the first hydraulic cylinder 52 controls whether the driving chain plate 54 is meshed with the gear ring 41, and when the driving chain plate 54 is not meshed with the gear ring 41, the limiting device 4 can rotate freely without limitation;
when the driving chain plate 54 is meshed with the gear ring 41, the rotation of the gear ring 41 is limited by the driving chain plate 54, the second hydraulic cylinder 55 drives the driving chain plate 54 to reciprocate on the movable frame 51, so that the gear ring 41 repeatedly rotates positively and negatively, when the rotation direction of the gear ring 41 is limited by the limiting ratchet structure 43, the inner ring of the bearing 42 is driven to rotate, so that the driving shaft 301 rotates, the number of rotation turns of the driving shaft 301 is controlled, the driving shaft 301 is prevented from rotating too many, and the tower crane accident occurs due to the overlarge rotation angle of the external tooth rotary support 3.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a tower crane gyration stopper in tower crane operation, includes rotation seat (102) and base (101) that upper and lower distribution set up, one side fixed connection mounting bracket (103) of rotation seat (102), its characterized in that: the top of the base (101) is rotationally connected with the bottom of the rotating seat (102) through an external tooth rotary support (2), a driving gear (3) is engaged and connected on the outer ring of the external tooth rotary support (2), the driving gear (3) is vertically rotationally arranged in a limiter mounting frame (104) through a driving shaft (301), and the limiter mounting frame (104) is fixedly connected with the other side of the base (101);
two limiting devices (4) are arranged at the upper end and the lower end of the driving shaft (301), each limiting device (4) comprises a bearing (42) with an inner ring fixedly connected with the outer wall of the driving shaft (301), a gear ring (41) is rotatably connected to the outer ring of each bearing (42), a plurality of latches (4101) with the same direction are uniformly distributed on the inner wall of each gear ring (41), a plurality of limiting ratchet structures (43) are connected to the inner wall of the inner ring of each bearing (42), and each limiting ratchet structure (43) extends towards the inner wall of each gear ring (41) and is matched with each latch (4101);
the directions of the latch teeth (4101) on the upper limit device (4) and the lower limit device are opposite;
install drive assembly (5) in stopper mounting bracket (104) in stop device (4) outside, drive assembly (5) are including first pneumatic cylinder (52) of horizontal installation in stopper mounting bracket (104), the drive end rigid coupling of first pneumatic cylinder (52) has movable frame (51), along its length direction slidable mounting in movable frame (51) have carriage (53), parallel mounting has drive link joint (54) in carriage (53), gear ring (41) movable engagement on drive link joint (54) and stop device (4), and carriage (53) one side is through second pneumatic cylinder (55) and movable frame (51) tip rigid coupling.
2. The tower crane rotation limiter in tower crane operation according to claim 1, wherein: the inner ring of the external tooth rotary support (2) is fixedly connected with the top of the base (101), and the outer ring of the external tooth rotary support (2) is fixedly connected with the bottom of the rotary seat (102).
3. The tower crane rotation limiter in tower crane operation according to claim 1, wherein: the limiter mounting frame (104) is of a hollow cavity structure and is fixedly mounted on the base (101) through bolts, the middle part of the driving shaft (301) is fixedly connected with a mounting bearing (302), and the mounting bearing (302) is fixedly connected with the inner wall of the limiter mounting frame (104).
4. The tower crane rotation limiter in tower crane operation according to claim 1, wherein: the outer wall of the driving shaft (301) is fixedly connected with a plurality of connecting pieces (303) extending outwards, and the outer ends of the connecting pieces (303) are fixedly connected with the inner ring of the bearing (42).
5. The tower crane rotation limiter in tower crane operation according to claim 1, wherein: the gear ring (41) is positioned at one side close to the inner ring of the bearing (42), a plurality of connecting sliding blocks (4201) extend towards the gear ring (41) on the outer ring of the bearing (42), and the connecting sliding blocks (4201) are in sliding clamping connection with an annular chute (4102) formed in the end face of the gear ring (41).
6. The tower crane rotation limiter in tower crane operation according to claim 1, wherein: the limiting ratchet structure (43) comprises a mounting shaft (432) fixedly mounted on the inner ring of the bearing (42), one ratchet (431) is rotatably connected to the mounting shaft (432), the ratchet (431) is matched with a latch (4101) on the inner wall of the gear ring (41), a torsion spring (433) is wound on the mounting shaft (432), one end of the torsion spring (433) is connected with the ratchet (431), the other end of the torsion spring is connected with the mounting shaft (432), and the ratchet (431) is attached to the latch (4101) under the action of the torsion spring (433).
7. The tower crane rotation limiter in tower crane operation according to claim 1, wherein: the limiting device is characterized in that a limiting cavity for sliding the movable frame (51) is formed in the limiting device mounting frame (104), the limiting device mounting frame (104) horizontally moves in the limiting cavity, a dovetail groove is formed in one side, facing the gear ring (41), of the movable frame (51), a dovetail block matched with the dovetail groove is mounted at the bottom of the sliding frame (53), and the sliding frame (53) slides on the movable frame (51) along the length direction of the sliding frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110107255.8A CN112830406B (en) | 2021-01-27 | 2021-01-27 | Tower crane rotation limiter in tower crane operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110107255.8A CN112830406B (en) | 2021-01-27 | 2021-01-27 | Tower crane rotation limiter in tower crane operation |
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| Publication Number | Publication Date |
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| CN112830406A CN112830406A (en) | 2021-05-25 |
| CN112830406B true CN112830406B (en) | 2023-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110107255.8A Active CN112830406B (en) | 2021-01-27 | 2021-01-27 | Tower crane rotation limiter in tower crane operation |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3452624A (en) * | 1967-06-26 | 1969-07-01 | Lorence Mfg Corp | Drive mechanism for a slew ring assembly |
| DE2643372A1 (en) * | 1976-09-27 | 1978-03-30 | Vetter Kg Arnold | Tower crane slewing drive - has motor pinion in bearing at motor output end and one in mounting plate |
| JPH09150341A (en) * | 1995-11-29 | 1997-06-10 | Kondo Seisakusho:Kk | Rotating mechanism provided with table |
| US6695157B1 (en) * | 2001-05-15 | 2004-02-24 | Liebherr-Werk Nenzing Gmbh | Rotary crane |
| CN206590795U (en) * | 2017-01-17 | 2017-10-27 | 北京紫竹慧建设服务股份有限公司 | A kind of tower crane rotary caging device |
| CN207226863U (en) * | 2017-10-10 | 2018-04-13 | 深圳市君乐实业有限公司 | A kind of swing mechanism for tower crane |
| CN212292596U (en) * | 2020-04-23 | 2021-01-05 | 郑州市鸿泰建筑设备租赁有限公司 | Rotation limiter of tower crane |
-
2021
- 2021-01-27 CN CN202110107255.8A patent/CN112830406B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3452624A (en) * | 1967-06-26 | 1969-07-01 | Lorence Mfg Corp | Drive mechanism for a slew ring assembly |
| DE2643372A1 (en) * | 1976-09-27 | 1978-03-30 | Vetter Kg Arnold | Tower crane slewing drive - has motor pinion in bearing at motor output end and one in mounting plate |
| JPH09150341A (en) * | 1995-11-29 | 1997-06-10 | Kondo Seisakusho:Kk | Rotating mechanism provided with table |
| US6695157B1 (en) * | 2001-05-15 | 2004-02-24 | Liebherr-Werk Nenzing Gmbh | Rotary crane |
| CN206590795U (en) * | 2017-01-17 | 2017-10-27 | 北京紫竹慧建设服务股份有限公司 | A kind of tower crane rotary caging device |
| CN207226863U (en) * | 2017-10-10 | 2018-04-13 | 深圳市君乐实业有限公司 | A kind of swing mechanism for tower crane |
| CN212292596U (en) * | 2020-04-23 | 2021-01-05 | 郑州市鸿泰建筑设备租赁有限公司 | Rotation limiter of tower crane |
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| Publication number | Publication date |
|---|---|
| CN112830406A (en) | 2021-05-25 |
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Effective date of registration: 20240705 Address after: Room 2008, Building C, Huijing City Center, 5155 Wangjiang West Road, High tech Zone, Hefei City, Anhui Province, China 230000 Patentee after: Hefei Lanyun Intelligent Technology Co.,Ltd. Country or region after: China Address before: Room 209, building D8, innovation industrial park, 800 Wangjiang West Road, high tech Zone, Hefei City, Anhui Province 230000 Patentee before: Anhui Youran cloud Technology Co.,Ltd. Country or region before: China |