CN217458573U - High-safety rotary crane for offshore operation - Google Patents
High-safety rotary crane for offshore operation Download PDFInfo
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- CN217458573U CN217458573U CN202220981828.XU CN202220981828U CN217458573U CN 217458573 U CN217458573 U CN 217458573U CN 202220981828 U CN202220981828 U CN 202220981828U CN 217458573 U CN217458573 U CN 217458573U
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Abstract
The utility model provides a high-safety rotary crane for offshore operation, which comprises a base, a rotary column suspension arm, a hanging basket, a rotating device, a lifting mechanism, a pulley block, a balancing weight and a hand ring, the base is fixed on the offshore platform, the control system of the crane can be operated by wireless remote control or manual operation, the crane is driven by double steel wire ropes, one group of steel wire ropes is accidentally broken, the other group of steel wire ropes still can ensure that the hanging basket does not fall, the steel wire ropes are wound into a plurality of triangular structures between the crane and the hanging basket, the swinging of the hanging basket is reduced, the counterweight weight gravity compensation can ensure that the steel wire ropes between the crane and the hanging basket maintain the lowest tension, the hanging basket is kept in contact with the deck surface, and the safety accident caused by the collision between the deck and the hanging appliance due to the influence of waves is avoided, when the loop crane breaks down and is in an emergency state without assistance of other personnel, the personnel on the hanging basket can pull the bracelet to enable the hanging basket to descend at a preset speed.
Description
Technical Field
The utility model relates to a rotatory loop wheel machine is used in offshore operation of high security.
Background
The personnel access of the existing ship and ocean platform mainly comprises a wave compensation crane, a step bridge, a springboard and the like which are specially installed on the ship, and the equipment is characterized in that the equipment is installed on the ship, and the personnel on the ship can not get on or off the platform when the sea waves are large. Wherein, when the heave compensation crane is installed on the platform, the platform must have an operator. For unattended ocean platforms, wind power platforms, unmanned islands and the like, the platform cannot be used.
The wave compensation crane has the advantages of complex equipment structure, difficult maintenance and high price, and the function of the wave compensation crane is specially used for personnel passing and hoisting cost which is too high, and the wave compensation crane is installed on a small work ship and has great influence on ship stability.
The step bridge is installed on a ship and has the characteristic of convenient passage, but because the step bridge has large weight, complex technology, strict requirement on reliability and high price, the step bridge is installed on a small work ship and also has great influence on the stability of the ship.
The springboard is suitable for the occasions with basically same ship shore height, small span and calm wind and waves, and the safety is difficult to ensure on the sea surface with large stormy waves.
Therefore, in order to meet the operation requirement of the ship under severe sea conditions, a remote control type special crane meeting the requirements of people for getting on and off the ocean platform is required to be developed.
SUMMERY OF THE UTILITY MODEL
To the problem, the utility model provides a rotatory loop wheel machine is used in offshore operation of high security, the loop wheel machine has a plurality of triangle-shaped's stable structure with the wire rope winding mode of hanging flower basket to constitute, in order to reduce and rock. The counterweight weight compensation can ensure that the steel wire rope between the crane and the hanging basket maintains the lowest tension, so that the hanging basket keeps contact with the deck surface, and the safety accident caused by the collision between the deck and the lifting appliance due to the influence of waves is avoided.
The embodiment of the utility model provides a high-safety rotary crane for offshore operation, which comprises a base (1), a rotary column suspension arm (2), a hanging basket (3), a rotating device (4), a lifting mechanism (5), a pulley block (6), a balancing weight (7) and a hand ring (8), wherein the base (1) is fixed on an offshore platform, the rotary column suspension arm (2) comprises a rotary column part and a suspension arm part, the lower end of the rotating device (4) is connected with the upper end of the base (1), the upper end of the rotating device (4) is connected with the lower end of the rotary column suspension arm (2), the pulley block (6) comprises a first guide pulley block arranged at the front end of the suspension arm part, a second guide pulley block arranged at the rear end of the suspension arm part and a third guide pulley block positioned below the first guide pulley block, a movable pulley block is arranged below the second guide pulley block, balancing weight (7) set up in the running block below and with the running block is connected, be equipped with four running pulleys on hanging flower basket (3), four running pulleys are the quadrangle and distribute, hoisting mechanism's (5) hoist engine sends two sets of wire rope, twines in proper order the pulley on first guide pulley group, hanging flower basket (3) the third guide pulley group the second guide pulley group the running block, two sets of wire rope's the other end is fixed on the running block, bracelet (8) set up in hanging flower basket (3) top is connected to through wire rope the brake equipment of hoisting mechanism (5).
In the preferred technical scheme of the high-safety rotary crane for offshore operation, the first guide pulley block comprises two groups of fixed pulleys, the first group of fixed pulleys comprises a fixed pulley 6a and a fixed pulley 6b, the second group of fixed pulleys comprises a fixed pulley 6c and a fixed pulley 6d, four movable pulleys on the hanging basket (3) are respectively a movable pulley 6e, a movable pulley 6f, a movable pulley 6g and a movable pulley 6h, the third guide pulley block comprises a fixed pulley 6i and a fixed pulley 6j, the second guide pulley block comprises a fixed pulley 6k and a fixed pulley 6l, the movable pulley block comprises a movable pulley 6m and a movable pulley 6n, the first group of steel wire ropes sent by the winch of the lifting mechanism (5) are sequentially wound along the fixed pulley 6a, the movable pulley 6e, the fixed pulley 6i, the movable pulley 6f, the fixed pulley 6b, the fixed pulley 6k and the movable pulley 6m, the end parts of the first group of steel wire ropes are fixed on the fastening buckles on the side surfaces of the movable pulleys 6m, the second group of steel wire ropes sent by a winch of the hoisting mechanism (5) are sequentially wound along the fixed pulleys 6c, the movable pulleys 6g, the fixed pulleys 6j, the movable pulleys 6h, the fixed pulleys 6d, the fixed pulleys 6l and the movable pulleys 6n, and the end parts of the second group of steel wire ropes are fixed on the fastening buckles on the side surfaces of the movable pulleys 6 n.
In the above-mentioned high-safety rotary crane for offshore operations, the rotating device (4) is driven by a motor or manually.
In the preferable technical scheme of the high-safety rotary crane for offshore operation, the hoisting mechanism (5) adopts a remote control or manual control working mode.
In the preferable technical scheme of the rotary crane for offshore operation with high safety, the rear part of the rotary column suspension arm (2) is provided with a limiter.
In the preferable technical scheme of the high-safety rotary crane for offshore operation, a limit switch is arranged at the highest position of the hanging basket (3).
In the preferred technical scheme of the rotary crane for offshore operation with high safety, the rotary column part and the boom part of the rotary column boom (2) adopt an integrated structure or a split structure.
In the preferable technical scheme of the high-safety rotary crane for offshore operation, the bottom of the hanging basket (3) is provided with an anti-skid shock absorber.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the steel wire rope winding mode has certain wind-proof and shake-proof capacity in heavy wind and heavy wave weather, and avoids danger caused by too much shaking of personnel.
2. This application has certain passive wave compensation, and what adopt is the physics nature principle of balancing weight action of gravity, does not need control element such as electro-hydraulic pressure, and reliability and maintainability are good.
3. This application adopts two wire rope drives, and any a set of wire rope breaks accidentally, and another group still can guarantee that the hanging flower basket does not fall.
The invention can be operated by passers-by through wireless remote control or by operators.
4. This application is equipped with the bracelet that passerby's oneself controlled on the hanging flower basket for emergent release.
Drawings
The following describes an embodiment of the distribution line inspection ground discharge device according to the present invention with reference to the drawings. The attached drawings are as follows:
fig. 1 is a schematic side view of a high-safety rotary crane for offshore operations according to the present invention;
fig. 2 is a schematic top view of a high-safety rotary crane for offshore operations according to the present invention;
fig. 3 is a schematic diagram of the winding of the steel wire rope provided by the present invention.
Description of reference numerals:
1: a base;
2: a base;
3: a base;
4: a rotating device;
5: a hoisting mechanism;
6: a pulley block;
7: a balancing weight;
8: a hand ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back) are provided in the embodiments of the present invention, they are only used to explain the relative position relationship between the components and the motion situation in a specific posture, and if the specific posture is changed, the directional indication is changed accordingly.
In addition, if a description of "first", "second", etc. is referred to in the present invention, it is used for descriptive purposes only and not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The following detailed description is given to the specific implementation of the present invention with reference to the specific embodiments:
referring to fig. 1 to 3, the embodiment of the present invention provides a high-safety rotary crane for offshore operations, comprising a base 1, a rotary column boom 2, a basket 3, a rotating device 4, a lifting mechanism 5, a pulley block 6, a counterweight 7, and a bracelet 8, wherein the base 1 is fixed on an offshore platform, the rotary column boom 2 comprises a rotary column part and a boom part, the lower end of the rotating device 4 is connected with the upper end of the base 1, the upper end of the rotating device 4 is connected with the lower end of the rotary column boom 2, the pulley block 6 comprises a first guide pulley block arranged at the front end of the boom part, a second guide pulley block arranged at the rear end of the boom part, and a third guide pulley block located below the first guide pulley block, a movable pulley block is arranged below the second guide pulley block, and the counterweight 7 is arranged below the movable pulley block and connected with the movable pulley block, be equipped with four movable pulleys on the hanging flower basket 3, four movable pulleys are the quadrangle and distribute, hoisting mechanism 5's hoist engine sends two sets of wire rope, twines in proper order pulley on first direction assembly pulley, the hanging flower basket 3 the third direction assembly pulley the second direction assembly pulley the movable pulley, two sets of wire rope's the other end is fixed on the movable pulley, bracelet 8 set up in 3 tops of hanging flower basket are connected to through wire rope hoisting mechanism 5's brake equipment.
In this embodiment, preferably, the first guide pulley block includes two sets of fixed pulleys, the first set of fixed pulleys includes a fixed pulley 6a and a fixed pulley 6b, the second set of fixed pulleys includes a fixed pulley 6c and a fixed pulley 6d, the four movable pulleys on the basket 3 are respectively a movable pulley 6e, a movable pulley 6f, a movable pulley 6g and a movable pulley 6h, the third guide pulley block includes a fixed pulley 6i and a fixed pulley 6j, the second guide pulley block includes a fixed pulley 6k and a fixed pulley 6l, the movable pulley block includes a movable pulley 6m and a movable pulley 6n, the first set of steel wire ropes sent by the hoisting machine of the hoisting mechanism 5 are sequentially wound along the fixed pulley 6a, the movable pulley 6e, the fixed pulley 6i, the movable pulley 6f, the fixed pulley 6b, the fixed pulley 6k and the movable pulley 6m, the end portions of the first set of steel wire ropes are fixed on the fastening buckles on the side surfaces of the movable pulley 6m, and a second group of steel wire ropes sent by a winch of the hoisting mechanism 5 are sequentially wound along the fixed pulley 6c, the movable pulley 6g, the fixed pulley 6j, the movable pulley 6h, the fixed pulley 6d, the fixed pulley 6l and the movable pulley 6n, and the end parts of the second group of steel wire ropes are fixed on the fastening buckles on the side surfaces of the movable pulley 6 n.
In this embodiment, the rotating device 4 is preferably driven by a motor or manually.
In this embodiment, the hoisting mechanism 5 is preferably operated remotely or manually.
In this embodiment, the rear part of the column rotating suspension arm 2 is preferably provided with a stopper.
In this embodiment, a limit switch is preferably arranged at the highest position of the basket 3.
In the present embodiment, the column turning part and the boom part of the column turning boom 2 are preferably of an integrated structure or a split structure.
In this embodiment, the bottom of the basket 3 is preferably provided with an anti-skid damper.
Wherein, base 1 is a steel construction, and bottom and platform fixed connection can adopt the welding mode, also can adopt bolted connection mode, and the top plane links to each other with rotating device 4 supports.
The rotary column suspension arm 2 is also of a steel structure, wherein the rotary column part is of a cylinder steel structure, the suspension arm is of a square-frame-shaped long strip structure, a certain angle is bent above the rotary column part, and the suspension arm extends outwards to form a cantilever for suspending the hanging basket 3. The rotary column part and the suspension arm part can be welded or assembled, and the assembled type can be connected through a bolt or can be connected with a support rod through a pin shaft to form a triangular connection.
The top of the rotary column part and the front part of the suspension arm part are provided with a plurality of guide pulley blocks.
The hanging basket 3 is a basket with four pulleys, the bottom of the hanging basket 3 is provided with an anti-skidding shock absorber, and when the crane works, personnel or materials enter the hanging basket 3.
The rotating device 4 is arranged between the lower part of the rotary column hanging arm and the upper plane of the base and is connected with the upper plane of the base through a bolt. The rotary power adopts a push rod to drive the rotation, and the rotation angle is generally 90 degrees. The push rod is electric or hydraulic, can be remotely controlled in a wireless way, and can be manually rotated beside the crane in an emergency state. When the rotation angle is too large, the rotation gear can be used for driving.
The hoisting mechanism 5 is arranged on the rotary column part, and the output of the steel wire rope from the winding drum is four-rope double-output or four-output. The lifting mechanism 5 can be lifted by wireless remote control or manually. In an emergency state, under the condition that no person is beside the crane, a person in the hanging basket 3 can pull the hand ring 8 to open the brake of the lifting mechanism, the hanging basket 3 descends under the pulling of the self weight of the hanging basket 3, and the speed limiter in the lifting mechanism 5 enables the hanging basket 3 to descend according to the set speed.
The counterweight 7 is arranged at the rear part of the rotary column, and the counterweight 7 can vertically lift under the traction of a steel wire rope and stop after contacting a limit stop block on the rotary column. The counterweight 7 pulls the steel wire rope to change the distance between the suspension arm and the hanging basket.
The winch drum of the hoisting mechanism 5 sends out a steel wire rope, and the steel wire rope is wound to a pulley on the hanging basket 3 through a guide pulley on the hanging arm head, then wound to another guide pulley on the hanging arm head, wound to another pulley on the hanging basket 3, wound to a guide pulley on a balancing weight 7 on the top of the rotating column and then fixed on a movable pulley on the balancing weight 7.
The working process of the utility model is as follows:
when needing to go to the ship from the platform, personnel get into hanging flower basket 3, remote control is opened hoisting mechanism 5, hanging flower basket 3 rises to the highest position, because wire rope twines into a plurality of triangle-shaped structures between loop wheel machine and hanging flower basket 3, can make hanging flower basket 3 be difficult to take place to rock, through the guide effect of assembly pulley, wire rope also pulls balancing weight 7 to upper limit, remote control starts rotating device 4, it is rotatory to the suitable position in boats and ships top to hang flower basket 3, remote control starts hoisting mechanism 5, hang flower basket 3 directly over the deck, choose to descend to the deck before boats and ships reach the trough, stop when reaching the trough, at this moment because hanging flower basket 3 still pulls wire rope, balancing weight 7 is located upper limit, personnel can come out from hanging flower basket 3.
When boats and ships rise under the effect of wave, hanging flower basket 3 follows the rising, because wire rope traction force reduces, balancing weight 7 descends under the action of gravity, makes wire rope keep the state of tightening all the time, and balancing weight 7 descends to be exactly the biggest compensation ability of allowwing when spacing down, and wire rope just can relax.
When a platform needs to be lifted up from a ship, the hanging basket 3 is always in contact with the deck and the steel wire rope is in a tightened state under the gravity compensation of the balancing weight 7, personnel enter the hanging basket 3, when the ship is in a lifting stage, the lifting mechanism 5 is remotely controlled to be started, the hanging basket 3 is lifted through the steel wire rope, the balancing weight 7 is pulled up to an upper limit position through the steel wire rope, the hanging basket 3 is lifted to the highest position when the peak is reached, the rotating device 4 can be remotely controlled to be started after the hanging basket 3 touches a limit switch, the hanging basket 3 is rotated to the landing position of the platform, and the hanging basket 3 is lowered onto the platform.
So far, the technical solutions of the present invention have been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.
Claims (8)
1. The rotary crane for offshore operation is high in safety and is characterized by comprising a base (1), a rotary column suspension arm (2), a hanging basket (3), a rotating device (4), a lifting mechanism (5), a pulley block (6), a balancing weight (7) and a hand ring (8), wherein the base (1) is fixed on an offshore platform, the rotary column suspension arm (2) comprises a rotary column part and a suspension arm part, the lower end of the rotating device (4) is connected with the upper end of the base (1), the upper end of the rotating device (4) is connected with the lower end of the rotary column suspension arm (2), the pulley block (6) comprises a first guide pulley block arranged at the front end of the suspension arm part, a second guide pulley block arranged at the rear end of the suspension arm part and a third guide pulley block positioned below the first guide pulley block, a movable pulley block is arranged below the second guide pulley block, the balancing weight (7) is arranged below the movable pulley block and is connected with the movable pulley block, be equipped with four movable pulleys on hanging flower basket (3), four movable pulleys are the quadrangle and distribute, the hoist engine of hoisting mechanism (5) sends two sets of wire rope, twines in proper order pulley on first direction assembly pulley, hanging flower basket (3) the third direction assembly pulley the second direction assembly pulley the movable pulley group, two sets of wire rope's the other end is fixed on the movable pulley group, bracelet (8) set up in hanging flower basket (3) top is connected to through wire rope the brake equipment of hoisting mechanism (5).
2. The high-safety rotary crane for offshore operations according to claim 1, wherein the first guide pulley group comprises two fixed pulley groups, the first fixed pulley group comprises a fixed pulley 6a and a fixed pulley 6b, the second fixed pulley group comprises a fixed pulley 6c and a fixed pulley 6d, the four movable pulleys on the basket (3) are respectively a movable pulley 6e, a movable pulley 6f, a movable pulley 6g and a movable pulley 6h, the third guide pulley group comprises a fixed pulley 6i and a fixed pulley 6j, the second guide pulley group comprises a fixed pulley 6k and a fixed pulley 6l, the movable pulley group comprises a movable pulley 6m and a movable pulley 6n, and the first steel wire rope group sent by the winch of the hoisting mechanism (5) sequentially passes through the fixed pulley 6a, the movable pulley 6e, the fixed pulley 6i, the movable pulley 6f, the fixed pulley 6b, the fixed pulley 6k, the fixed pulley 6h, The movable pulley 6m is wound, the end parts of a first group of steel wire ropes are fixed on the fastening buckles on the side surfaces of the movable pulley 6m, a second group of steel wire ropes sent by a winch of the hoisting mechanism (5) are sequentially wound along the fixed pulley 6c, the movable pulley 6g, the fixed pulley 6j, the movable pulley 6h, the fixed pulley 6d, the fixed pulley 6l and the movable pulley 6n, and the end parts of the second group of steel wire ropes are fixed on the fastening buckles on the side surfaces of the movable pulley 6 n.
3. A high-safety rotary crane for offshore operations, as claimed in claim 1, characterized in that said rotating means (4) are of the motor-driven or manual type.
4. High safety rotating crane for offshore operations according to claim 1, characterized in that the hoisting mechanism (5) is operated remotely or manually.
5. A high safety rotary crane for offshore operations according to claim 1, characterized in that the rear part of the column section of the column boom (2) is provided with a stop.
6. A high safety rotary crane for offshore operations according to claim 1, characterized in that a limit switch is provided at the highest position of the gondola (3).
7. A high-safety rotary crane for offshore operations according to claim 1, characterized in that the column section and the boom section of the column boom (2) are of one-piece or split construction.
8. A high safety rotary crane for offshore operations according to claim 1, characterized in that the bottom of the basket (3) is provided with an anti-skid shock absorber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220981828.XU CN217458573U (en) | 2022-04-26 | 2022-04-26 | High-safety rotary crane for offshore operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220981828.XU CN217458573U (en) | 2022-04-26 | 2022-04-26 | High-safety rotary crane for offshore operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217458573U true CN217458573U (en) | 2022-09-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220981828.XU Active CN217458573U (en) | 2022-04-26 | 2022-04-26 | High-safety rotary crane for offshore operation |
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| CN (1) | CN217458573U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116834901A (en) * | 2023-07-03 | 2023-10-03 | 广东海洋大学 | Marine lifeboat retraction device |
-
2022
- 2022-04-26 CN CN202220981828.XU patent/CN217458573U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116834901A (en) * | 2023-07-03 | 2023-10-03 | 广东海洋大学 | Marine lifeboat retraction device |
| CN116834901B (en) * | 2023-07-03 | 2024-07-19 | 广东海洋大学 | Marine lifeboat retraction device |
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