CN115072608B - Platform elevating system - Google Patents
Platform elevating system Download PDFInfo
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- CN115072608B CN115072608B CN202210561851.8A CN202210561851A CN115072608B CN 115072608 B CN115072608 B CN 115072608B CN 202210561851 A CN202210561851 A CN 202210561851A CN 115072608 B CN115072608 B CN 115072608B
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- lifting
- upright post
- platform
- driving devices
- pulley
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- 230000003028 elevating effect Effects 0.000 title description 2
- 229910000831 Steel Inorganic materials 0.000 claims description 26
- 239000010959 steel Substances 0.000 claims description 26
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 238000004804 winding Methods 0.000 description 7
- 230000006978 adaptation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Abstract
The application discloses a platform lifting mechanism, comprising: the platform lifting mechanism is connected with all the lifting driving devices, and all the lifting driving devices are in signal connection with the control system. The platform lifting mechanism provided by the application drives the platform lifting mechanism to lift through the arrangement of the lifting driving devices, the immersed tube is placed on the platform lifting mechanism, when the platform lifting mechanism descends, the immersed tube can be immersed into the sea, after the immersed tube is pulled away, the platform lifting mechanism ascends again, the subsequent immersed tube can be transported, and the stability of transporting the immersed tube can be improved through synchronous control of all the lifting driving devices by the control system.
Description
Technical Field
The invention relates to the technical field of machinery, in particular to a platform lifting mechanism.
Background
Since the sewage of the nuclear power station needs to be discharged to the far sea floor, the total length of the drain pipe is approximately 4km, and the main size of each standard pipe section is 36m 13m 6.8m (length is equal to width is equal to height), and the weight is about 2500 tons. The immersed tube is prefabricated in a seaside site, the immersed tube is transported in an air bag transportation mode, an ultra-high pressure air bag with the diameter phi of 1000mm is selected, the bearing capacity of factory inspection is 0.5MPa, and the pressure limiting value of a safety valve is 0.35MPa. When in longitudinal movement and transportation, 12 air bags are uniformly arranged at the bottom of the immersed tube, the length of each air bag is 15m, and the space between the air bags is 3m. After the immersed tube is conveyed to the steel platform, the immersed tube is lowered into the sea by lowering the steel platform, and the inner cavity of the immersed tube is plugged into the steel buoyancy tank, so that the immersed tube can float upwards and can be towed away by a ship. At present, no equipment similar to the equipment for conveying the immersed tube exists at home and abroad.
In view of the foregoing, it is an urgent problem to be solved by those skilled in the art how to provide a device for transporting immersed tubes.
Disclosure of Invention
It is therefore an object of the present invention to provide a platform lifting mechanism for transporting a immersed tube into the sea.
In order to achieve the above object, the present invention provides the following technical solutions:
A platform lift mechanism, comprising: the lifting platform is connected with all lifting driving devices, and all lifting driving devices are connected with the control system through signals.
Preferably, lifting parts which are consistent in number and correspond to the lifting driving devices one by one are arranged at the edges of two sides of the lifting platform, and all the lifting driving devices are connected with all the lifting parts one by one.
Preferably, the lifting driving device comprises a winch, an upright post and a guiding device arranged on the upright post, a steel wire rope of the winch is arranged along the guiding device and connected with the lifting part, and the upright posts are arranged on two sides of the lifting platform.
Preferably, the guiding device comprises a first guiding pulley and a second guiding pulley, the first guiding pulley is arranged on the outer side of the upright post, the second guiding pulley is arranged on the inner side of the upright post, and the winch is arranged on the outer side of the upright post.
Preferably, the hoisting part is a movable pulley arranged on the hoisting platform, and a steel wire rope of the winch bypasses the movable pulley to be connected with the upright post.
Preferably, a wedge sleeve is arranged at the upper end of the inner side of the upright post, the second guide pulley is arranged in the wedge sleeve, and a steel wire rope of the winch is connected with the wedge sleeve.
Preferably, the upright post comprises a concrete upright post and a steel upright post arranged on the concrete upright post, the first guide pulley is arranged at the upper end of the outer side of the steel upright post, and the distance between the first guide pulley and the winch at the outer side of the concrete upright post is larger than 10m.
Preferably, a ladder is arranged on the side surface of the steel upright post.
Preferably, a concrete wall is arranged around the winch.
The platform lifting mechanism provided by the application drives the lifting platform to lift through the plurality of lifting driving devices, the immersed tube is placed on the lifting platform, when the lifting platform descends, the immersed tube can be immersed into the sea, after the immersed tube is pulled away, the lifting platform ascends again, the subsequent immersed tube can be transported, and the stability of transporting the immersed tube can be improved through synchronous control of all the lifting driving devices by the control system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of a platform lift mechanism provided by the present invention;
FIG. 2 is a top view of a platform lift mechanism according to the present invention;
FIG. 3 is a side view of a platform lift mechanism provided by the present invention;
Fig. 4 is a plan view of the hoist provided by the present invention.
In fig. 1-4:
1-steel upright post, 2-second guide pulley, 3-first guide pulley, 4-concrete upright post, 5-hoist engine, 6-lift platform, 7-movable pulley.
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.
The core of the invention is to provide a platform lifting mechanism to facilitate the transport of a immersed tube into the sea.
Referring to fig. 1 to 4, a platform lifting mechanism includes: the lifting platform 1 is connected with all lifting driving devices, and all lifting driving devices are connected with the control system through signals.
It should be noted that, all lifting driving devices are respectively located at two sides of the lifting platform 1, and lifting driving devices with the same number and corresponding positions are respectively arranged at two sides of the lifting platform 1, all lifting driving devices are connected with a control system through signals, and the control system can synchronously control all lifting driving devices to drive the lifting platform 1 to lift at the same time so as to improve the lifting stability of the lifting platform 1.
According to the platform lifting mechanism provided by the application, the lifting platform 1 is driven to lift by the plurality of lifting driving devices, the immersed tube is placed on the lifting platform 1, when the lifting platform 1 descends, the immersed tube can be immersed into the sea, after the immersed tube is pulled away, the lifting platform 1 ascends again, the subsequent immersed tube can be conveyed, and the stability of conveying the immersed tube can be improved by synchronously controlling all the lifting driving devices through the control system.
On the basis of the above embodiment, as a further preferable aspect, lifting portions corresponding to the lifting driving devices in number and one-to-one are provided at two side edges of the lifting platform 1, and all the lifting driving devices are connected to all the lifting portions one by one. Lifting parts are uniformly distributed along two sides of the lifting platform 1, and all lifting driving devices are uniformly distributed along two sides of the lifting platform 1, so that lifting stability of the lifting platform 1 is improved.
On the basis of the above embodiment, as a further preferable mode, the lifting driving device includes a hoist 5, a column and a guiding device provided on the column, a wire rope of the hoist 5 is installed along the guiding device and connected with the hoisting part, and both sides of the lifting platform 1 are provided with the column. The number of the winches 5 is eight, four winches 5 are respectively arranged on two sides of the lifting platform 1, the maximum pulling force of a single steel wire rope of each winch 5 is 300kN, and each winch 5 is provided with an encoder and a travel switch, so that the height position of each lifting point can be accurately detected.
Further preferably, on the basis of the above embodiment, the guiding device includes a first guiding pulley 3 and a second guiding pulley 2, the first guiding pulley 3 is disposed on the outer side of the upright, the second guiding pulley 2 is disposed on the inner side of the upright, and the hoist 5 is disposed on the outer side of the upright. The wire rope winds around the first guide pulley 3 and the second guide pulley 2 in turn along the outer side of the upright post, and the sliding grooves of the first guide pulley 3 and the second guide pulley 2 are positioned on the same straight line so as to ensure that the wire rope is driven along the straight line.
Further preferably, in the above embodiment, the hoisting portion is a movable pulley 7 provided on the hoisting platform, and the wire rope of the hoist 5 bypasses the movable pulley 7 and is connected to the column. Since the movable pulley 7 is to be sunk into the sea floor, the movable pulley 7 adopts a tight seal type to prevent seawater from entering the bearing.
The first guide pulley 3, the second guide pulley 2 and the movable pulley 7 form a pulley block, the multiplying power of the pulley block is 12 times, and the winding quantity of the steel wire rope is large due to large multiplying power and large lifting height, so that a broken line winding drum suitable for multi-layer winding is needed for excessively large deflection angle of the steel wire rope on the winding drum, and the steel wire rope is ensured to be wound neatly on the winding drum and is not rotated.
Further preferably, in the above embodiment, a wedge sleeve is provided at an upper end of an inner side of the upright, the second guide pulley 2 is provided at the wedge sleeve, and a wire rope of the hoist 5 is connected to the wedge sleeve. The wedge sleeve is protruded along the inner side of the upright post, so that the lifting width of the second guide pulley 2 is increased, the distance between the lifting platform and the upright post is increased, and lifting of the lifting platform is facilitated.
Preferably, in order to enable the lifting platform 1 to lift and accurately position and bear the horizontal force of the lifting platform 1 on the immersed tube roller, four protrusions corresponding to the stand columns one by one are respectively arranged on two sides of the lifting platform 1, concrete guide grooves are formed in the inner sides of the eight stand columns, and all the protrusions are located in the corresponding concrete guide grooves.
On the basis of the above embodiment, as a further preferable mode, the upright comprises a concrete upright 4 and a steel upright 1 arranged on the concrete upright 4, the first guide pulley 3 is arranged at the upper end of the outer side of the steel upright 1, and the distance between the first guide pulley 3 and the winch 5 outside the concrete upright 4 is larger than 10m. In the arrangement of the pulley block, the deflection angle between the steel wire rope and the winding drum is smaller than 1.5 degrees, and the integral structure of the concrete column and the steel upright column 1 is adopted, so that the distance between the first guide pulley 3 and the winding drum is more than 10m.
On the basis of the above embodiment, as a further preferable mode, a concrete wall is arranged around the hoist 5 to prevent the sea wave from beating on the hoist 5 and to improve the service life of the hoist 5.
In order to facilitate maintenance or replacement of the first guide pulley 3 and the second guide pulley 2, a ladder is provided on the side of the steel upright 1.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The platform lifting mechanism provided by the invention is described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (1)
1. A platform lifting mechanism, comprising: the lifting platform (1) is connected with all lifting driving devices, all the lifting driving devices are respectively positioned at two sides of the lifting platform (1), and the lifting driving devices with the same number and corresponding positions are respectively arranged at two sides of the lifting platform (1); all the lifting driving devices are connected with the control system through signals, and the control system synchronously controls all the lifting driving devices to drive the lifting platform (1) to lift;
lifting parts which are consistent in number and correspond to the lifting driving devices one by one are arranged at the edges of two sides of the lifting platform (1), and all the lifting driving devices are connected with all the lifting parts one by one; the hoisting parts are uniformly distributed along the two sides of the lifting platform (1), and all lifting driving devices are uniformly distributed along the two sides of the lifting platform (1);
The lifting driving device comprises a winch (5), an upright post and a guiding device arranged on the upright post, wherein a steel wire rope of the winch (5) is arranged along the guiding device and connected with the lifting part, and the upright posts are arranged on two sides of the lifting platform (1);
The upper end of the inner side of the upright post is provided with a wedge sleeve, a second guide pulley (2) is arranged on the wedge sleeve, and a steel wire rope of the winch (5) is connected with the wedge sleeve; the wedge sleeve protrudes along the inner side of the upright post;
The guiding device comprises a first guiding pulley (3) and a second guiding pulley (2), the first guiding pulley (3) is arranged on the outer side of the upright post, the second guiding pulley (2) is arranged on the inner side of the upright post, and the winch (5) is arranged on the outer side of the upright post; the steel wire rope of the winch (5) sequentially bypasses the first guide pulley (3) and the second guide pulley (2) along the outer side of the upright post, and the sliding grooves of the first guide pulley (3) and the second guide pulley (2) are positioned on the same straight line;
the hoisting part is a movable pulley (7) arranged on the hoisting platform, and a steel wire rope of the winch (5) bypasses the movable pulley (7) and is connected with the upright post;
The vertical columns comprise concrete vertical columns (4) and steel vertical columns arranged on the concrete vertical columns (4), the first guide pulleys (3) are arranged at the upper ends of the outer sides of the steel vertical columns, and the distance between the first guide pulleys (3) and the windlass (5) at the outer sides of the concrete vertical columns (4) is larger than 10m; a ladder is arranged on the side surface of the steel upright post;
Concrete walls are arranged around the windlass (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210561851.8A CN115072608B (en) | 2022-05-23 | Platform elevating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210561851.8A CN115072608B (en) | 2022-05-23 | Platform elevating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115072608A CN115072608A (en) | 2022-09-20 |
| CN115072608B true CN115072608B (en) | 2024-07-02 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106185677A (en) * | 2016-08-29 | 2016-12-07 | 安徽马钢工程技术集团有限公司 | A kind of hoisting mechanism and the jacking system of large-sized structural parts based on this mechanism |
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106185677A (en) * | 2016-08-29 | 2016-12-07 | 安徽马钢工程技术集团有限公司 | A kind of hoisting mechanism and the jacking system of large-sized structural parts based on this mechanism |
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