CN214365142U

CN214365142U - Mud cutting device for integrally removing large offshore structure

Info

Publication number: CN214365142U
Application number: CN202022460514.9U
Authority: CN
Inventors: 周绪强; 都光明; 叶亚龙; 徐永琦; 王道能
Original assignee: Yantai Salvage Bureau Of Ministry Of Transport
Current assignee: Yantai Salvage Bureau Of Ministry Of Transport
Priority date: 2020-05-22
Filing date: 2020-10-29
Publication date: 2021-10-08
Anticipated expiration: 2030-10-29

Abstract

The utility model provides a mud cutting device for integral demolition of large-scale marine structures, which comprises two bilaterally symmetrical cutting mechanisms, wherein each cutting mechanism comprises an anti-sinking seat bottom frame, the front end of the top of the anti-sinking seat bottom frame is fixed with a cutting suspension arm extending to the front upper part, and the anti-sinking seat bottom frame is hinged with a cutting arm extending to the front lower part below the cutting suspension arm; an anchoring bottom grabbing suspension arm extending upwards backwards is fixed at the rear end of the top of the anti-sinking seat underframe, and an anchoring bottom grabbing auxiliary arm extending downwards backwards is hinged below the anchoring bottom grabbing suspension arm of the anti-sinking seat underframe; a diamond wire saw horizontally arranged is arranged between the lower ends of the two cutting arms. The cutting arm and the anchoring bottom grabbing auxiliary arm realize lifting movement through a steel wire rope, a pulley and the like. The utility model can realize the integral cutting of large-scale structures, has small disturbance and no spark in the cutting process, has little pollution to the ocean, and avoids the danger of oil gas explosion; the cutting cost is low, and the time consumption is short.

Description

Mud cutting device for integrally removing large offshore structure

Technical Field

The utility model relates to a remove cutting technical field under coastal waters oil well platform pipe mud, particularly be a cutting device under mud that is used for marine large-scale structure whole to remove.

Background

At present, with the long-term collection of offshore oil and gas field resources in China, the offshore oil and gas field resources are increasingly exhausted, and a large number of waste platforms need to be dismantled. In order to ensure the safety of offshore channels and environmental protection, the abandoned oil production platform structure is required to be cut and dismantled at a position which is not less than 4m below the underwater natural mud surface, and sparks cannot be generated during cutting. According to the requirements, most of the abandoned oil-gas pipes and protection piles cannot be cut and dismantled, and the situations of high maintenance cost, high risk, insufficient utilization of offshore sea surfaces and the like exist.

SUMMERY OF THE UTILITY MODEL

According to the technical problem, the mud cutting device for integrally removing the large offshore structure is provided.

The utility model discloses a technical means as follows:

a mud cutting device for integrally removing large offshore structures comprises two bilaterally symmetrical cutting structures, wherein each cutting structure comprises an anti-settling base frame, a cutting suspension arm extending forwards and upwards is fixed at the front end of the top of the anti-settling base frame, and a cutting arm extending forwards and downwards is hinged below the cutting suspension arm of the anti-settling base frame;

an anchoring bottom grabbing suspension arm extending upwards backwards is fixed at the rear end of the top of the anti-sinking seat underframe, and an anchoring bottom grabbing auxiliary arm extending downwards backwards is hinged below the anchoring bottom grabbing suspension arm of the anti-sinking seat underframe;

one end of a steel wire rope I is fixedly connected with the end part of the cutting suspension arm after sequentially passing through a plurality of direction changing pulleys I fixed on the top of the anti-sinking seat underframe, a cutting suspension arm pulley I fixed on the end part of the cutting suspension arm and a cutting arm pulley I fixed on the lower part of the cutting arm, the other end of the steel wire rope I is fixedly connected with one side of a lifting hook I on a floating crane ship, and the lifting hook I is suspended above the anti-sinking seat underframe;

the other side of the lifting hook I is fixedly connected with one end of a steel wire rope II, and the other end of the steel wire rope II is fixedly connected with the end part of the anchoring bottom-grabbing suspension arm after sequentially passing through a plurality of direction-changing pulleys II fixed at the top of the anti-sinking seat underframe, an anchoring bottom-grabbing suspension arm pulley I fixed at the end part of the anchoring bottom-grabbing suspension arm and an anchoring bottom-grabbing auxiliary arm pulley I fixed at the lower part of the anchoring bottom-grabbing auxiliary arm;

one end of a steel wire rope III is fixedly connected with a lifting hook II on the floating crane, and the other end of the steel wire rope III is fixedly connected with the lower part of the anchoring and bottom grabbing auxiliary arm after sequentially passing through a direction changing pulley III fixed on the anti-sinking base underframe, an anchoring and bottom grabbing auxiliary arm pulley II fixed on the lower part of the anchoring and bottom grabbing auxiliary arm and a cutting arm pulley II fixed on the lower part of the cutting arm;

two be equipped with the diamond wire saw that the level set up between the lower extreme of cutting arm, the both ends of diamond wire saw respectively with the one end fixed connection who is connected wire rope, just connect wire rope's the other end and get into the bottom of cutting arm, and follow the top of cutting arm is worn out the back and is set up prevent sinking and sit chassis top the cutting lifting hook fixed connection of floating crane ship.

And the cutting arm is provided with a high-pressure mud blowing mechanism.

The anti-sinking seat bottom frame comprises a base body and an anti-sinking plate fixed at the bottom of the base body.

Lifting lug structures are respectively fixed on the front side and the rear side of the top of the anti-sinking seat underframe, a lifting hook of the floating crane ship is suspended above the anti-sinking seat underframe, and two ends of the lifting hook are respectively connected with the lifting lugs through lifting steel wire ropes.

The cutting arm includes linking arm and cutting knife, the upper end of linking arm with it is articulated to prevent sinking to sit the chassis, the lower extreme and the cutting knife fixed connection of linking arm, the cutting knife sets up the inboard of linking arm, just cutting arm pulley I is fixed the bottom outside of linking arm, high pressure blows mud mechanism and installs linking arm bottom inboard, and it is located the cutting knife top, cutting arm pulley II is fixed linking arm lower part inboard, and it is located high pressure blows mud mechanism top.

The anchoring bottom grabbing auxiliary arm comprises a supporting arm and a ground grabbing anchor, the upper end of the supporting arm is hinged to the anti-sinking sitting base, the ground grabbing anchor is fixedly connected with the lower end of the supporting arm, the ground grabbing anchor is arranged on the inner side of the supporting arm, an anchoring bottom grabbing auxiliary arm pulley I is fixed on the outer side of the bottom of the supporting arm, and an anchoring bottom grabbing auxiliary arm pulley II is fixed on the inner side of the bottom of the supporting arm and located above the ground grabbing anchor.

Compared with the prior art, the utility model has the advantages of it is following:

the integral cutting of large-scale structures can be realized, and particularly, the operation efficiency can be obviously improved for pile group structures; the device performs overwater control, does not use divers to perform underwater operation, and reduces underwater operation risks; the cutting process has small disturbance, no spark and little pollution to the ocean, and avoids the danger of oil gas explosion; the cutting cost is low, the time consumption is short, and the economic benefit is good.

Based on the above reason the utility model discloses can extensively promote in fields such as the cutting of the submarine mud body.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic view of the using state of an underwater mud cutting device for integrally removing large marine structures according to an embodiment of the present invention.

Fig. 2 is a schematic structural view of a cutting structure in an embodiment of the present invention (the cutting arm and the anchoring and bottom-grasping auxiliary arm are not put down, and a connecting wire rope is provided).

Fig. 3 is a schematic view of the cutting structure according to the embodiment of the present invention (the cutting arm and the anchoring and bottom-grasping auxiliary arm are put down, and the connecting wire rope is removed).

In the figure: 1. a cutting mechanism; 2. an anti-sinking seat bottom frame; 21. a base body; 22. an anti-sinking plate; 23, a lifting lug structure; 24. hoisting a lifting hook; 25. hoisting the steel wire rope; 3. cutting the suspension arm; 31. a lifting hook I; 32. a steel wire rope I; 33. a direction-changing pulley I; 34. cutting a suspension arm pulley I; 35. a cutting arm pulley I; 4. a cutting arm; 41. a connecting arm; 42. a cutting knife; 5. anchoring the bottom grabbing suspension arm; 51. a steel wire rope II; 52. a direction-changing pulley II; 53. anchoring a bottom grabbing suspension arm pulley I; 54. anchoring a bottom grabbing auxiliary arm pulley I; 6. anchoring the grabbing auxiliary arm; 61. a lifting hook II; 62. a steel wire rope III; 63. a direction-changing pulley III; 64. anchoring a bottom grabbing auxiliary arm pulley II; 65. a cutting arm pulley II; 66. a support arm; 67. grabbing a ground anchor; 7. a diamond wire saw; 71. Connecting a steel wire rope; 72. cutting the hook; 8. a high-pressure mud blowing mechanism; 9. a floating crane vessel; 91. the structure is discarded.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below 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. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element in question must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

As shown in fig. 1 to 3, the mud cutting device for integral dismantling of large marine structures comprises two bilaterally symmetrical cutting structures 1, wherein each cutting structure 1 comprises an anti-settling base frame 2, a cutting suspension arm 3 extending forwards and upwards is fixed at the front end of the top of the anti-settling base frame 2, and a cutting arm 4 extending forwards and downwards is hinged below the cutting suspension arm 3 on the anti-settling base frame 2;

an anchoring bottom grabbing suspension arm 5 extending upwards backwards is fixed at the rear end of the top of the anti-sinking base frame 2, and an anchoring bottom grabbing auxiliary arm 6 extending downwards backwards is hinged below the anchoring bottom grabbing suspension arm 5 of the anti-sinking base frame 2;

one end of the steel wire rope I32 is fixedly connected with the end part of the cutting suspension arm 3 after sequentially passing through a plurality of direction changing pulleys I33 fixed on the top of the anti-sinking base frame 2, a cutting suspension arm pulley I34 fixed on the end part of the cutting suspension arm 3 and a cutting arm pulley I35 fixed on the lower part of the cutting arm 4; the other end of the steel wire rope I32 is fixedly connected with one side of a lifting hook I31 on the floating crane ship 9, and the lifting hook I31 is suspended above the anti-sinking sitting underframe 2;

a steel wire rope II 51 is arranged on the other side of the lifting hook I31, the other end of the steel wire rope II 51 is fixedly connected with the lifting hook I31, and the other end of the steel wire rope II 51 is fixedly connected with the end part of the anchoring bottom-grabbing lifting arm 5 after sequentially passing through a plurality of direction-changing pulleys II 52 fixed on the top of the anti-sinking base frame 2, an anchoring bottom-grabbing lifting arm pulley I53 fixed on the end part of the anchoring bottom-grabbing lifting arm 5 and an anchoring bottom-grabbing auxiliary arm pulley I54 fixed on the lower part of the anchoring bottom-grabbing auxiliary arm 6;

one end of a steel wire rope III 62 is fixedly connected with a lifting hook II 61 on the floating crane 9, the lifting hook II 61 is suspended above the anti-sinking seat underframe 2, and the other end of the steel wire rope III 62 is fixedly connected with the lower part of the anchoring and grabbing auxiliary arm 6 after sequentially passing through a direction-changing pulley III 63 fixed on the anti-sinking seat underframe 2, an anchoring and grabbing auxiliary arm pulley II 64 fixed on the lower part of the anchoring and grabbing auxiliary arm 6 and a cutting arm pulley II 65 fixed on the lower part of the cutting arm 4;

two be equipped with the diamond wire saw 7 of level setting between the lower extreme of cutting arm 4, the both ends of diamond wire saw 7 respectively with the one end fixed connection of connecting wire rope 71, just connecting wire rope 71's the other end gets into the bottom of cutting arm 4, and follow the back is worn out with the setting at the top of cutting arm 4 prevent sinking and sit chassis 2 top the cutting lifting hook 72 fixed connection of floating crane 9. The connecting wire rope 71 is turned inside the cutting arm 4 by means of a plurality of fixed pulleys.

The cutting arm 4 is provided with a high-pressure mud blowing mechanism 8, and the high-pressure mud blowing mechanism 8 is connected with a high-pressure water pump through a high-pressure resistant water pipe.

The anti-sinking seat underframe 2 comprises a base main body 21 and an anti-sinking plate 22 fixed at the bottom of the base main body 21.

Lifting lug structures 23 are respectively fixed on the front side and the rear side of the top of the anti-sinking seat underframe 2, a lifting hook 24 for suspending the floating crane ship 9 is arranged above the anti-sinking seat underframe, and two ends of the lifting hook 24 are respectively connected with the lifting lugs 23 through lifting steel wire ropes 25.

Cutting arm 4 includes connecting arm 41 and cutting knife 42, the upper end of connecting arm 41 with it is articulated to prevent heavy sitting chassis 2, the lower extreme and the cutting knife 42 fixed connection of connecting arm 41, cutting knife 42 sets up the inboard of connecting arm 41, just cutting arm pulley I35 is fixed the bottom outside of connecting arm 41, high pressure blows mud mechanism 8 and installs connecting arm 41 bottom is inboard, and it is located the cutting knife 42 top, cutting arm pulley II 65 is fixed connecting arm 41 lower part is inboard, and it is located high pressure blows mud mechanism 8 top.

The anchoring bottom grabbing auxiliary arm 6 comprises a supporting arm 66 and a ground grabbing anchor 67, the upper end of the supporting arm 66 is hinged to the anti-sinking sitting underframe 2, the ground grabbing anchor 67 is fixedly connected with the lower end of the supporting arm 66, the ground grabbing anchor 67 is arranged on the inner side of the supporting arm 66, the anchoring bottom grabbing auxiliary arm pulley I54 is fixed on the outer side of the bottom of the supporting arm 66, and the anchoring bottom grabbing auxiliary arm pulley II 64 is fixed on the inner side of the bottom of the supporting arm 66 and located above the ground grabbing anchor 67.

In the use state: two floating crane ships 9 are respectively provided with cutting structures 1 at the left side and the right side of a waste structure 91, the cutting structures 1 are placed on a mud surface by utilizing a hoisting hook 24, at the moment, a lifting hook I31 is lowered, the anchoring bottom grabbing sub-arm 6 and the cutting arm 4 move downwards under the action of self gravity, a ground grabbing anchor 67 enters the mud surface, the cutting operation of the cutting structures 1 is realized by the rising of a lifting hook II 61 and the falling of the cutting arm 4 under the gravity, the front and back movement of the diamond rope saw 8 is realized by the up-and-down movement of the cutting hook 72 in the process, the mud surface is cut, the high-pressure water mud blowing mechanism 8 releases high-pressure water in the cutting operation process, and surface layer mud is blown off to reduce the resistance in the movement process of the cutting arm 4. The ground grabbing anchor 67 is of a wide plate structure and has a good soil anchoring effect, and the anchoring bottom grabbing auxiliary arm 6 can be kept still in the cutting process of the cutting arm 4. After use, the cutting arm 4 and the anchoring and bottom-grasping auxiliary arm 6 are lifted by the hook i 31, and then the cutting mechanism 1 is lifted by the lifting hook 24.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The mud cutting device for integrally removing the large offshore structure is characterized by comprising two bilaterally symmetrical cutting mechanisms, wherein each cutting mechanism comprises an anti-settling base frame, a cutting suspension arm extending forwards and upwards is fixed at the front end of the top of the anti-settling base frame, and a cutting arm extending forwards and downwards is hinged below the cutting suspension arm of the anti-settling base frame;

one end of a steel wire rope III is fixedly connected with a lifting hook II on the floating crane, the lifting hook II is suspended above the anti-sinking seat underframe, and the other end of the steel wire rope III is fixedly connected with the lower part of the anchoring and grabbing auxiliary arm after sequentially passing through a direction-changing pulley III fixed on the anti-sinking seat underframe, an anchoring and grabbing auxiliary arm pulley II fixed on the lower part of the anchoring and grabbing auxiliary arm and a cutting arm pulley II fixed on the lower part of the cutting arm;

2. An underwater cutting device for integral demolition of large offshore structures according to claim 1, wherein the cutting arm is mounted with a high pressure mud blowing mechanism.

3. A mud cutting device for integral demolition of large offshore structures according to claim 1 or 2, wherein the anti-sinking seat frame comprises a base body and an anti-sinking plate fixed at the bottom of the base body.

4. The mud cutting device for integral demolition of large offshore structures according to claim 1 or 2, wherein lifting lug structures are fixed to the front side and the rear side of the top of the anti-sinking seat underframe respectively, a lifting hook of the floating crane is suspended above the anti-sinking seat underframe, and two ends of the lifting hook are connected with the lifting lugs through lifting steel wire ropes respectively.

5. The mud underwater cutting device for integrally removing the large offshore structure as claimed in claim 2, wherein the cutting arm comprises a connecting arm and a cutting knife, the upper end of the connecting arm is hinged to the anti-sinking seat base, the lower end of the connecting arm is fixedly connected with the cutting knife, the cutting knife is arranged on the inner side of the connecting arm, the cutting arm pulley I is fixed on the outer side of the bottom of the connecting arm, the high-pressure mud blowing mechanism is mounted on the inner side of the bottom of the connecting arm and located above the cutting knife, and the cutting arm pulley II is fixed on the inner side of the lower portion of the connecting arm and located above the high-pressure mud blowing mechanism.

6. The mud cutting device for integrally removing large offshore structures as claimed in claim 2, wherein the anchoring and bottom grabbing auxiliary arm comprises a supporting arm and a ground grabbing anchor, the upper end of the supporting arm is hinged to the anti-sinking seat frame, the ground grabbing anchor is fixedly connected with the lower end of the supporting arm, the ground grabbing anchor is arranged on the inner side of the supporting arm, the anchoring and bottom grabbing auxiliary arm pulley I is fixed on the outer side of the bottom of the supporting arm, and the anchoring and bottom grabbing auxiliary arm pulley II is fixed on the inner side of the bottom of the supporting arm and located above the ground grabbing anchor.