CN114908672A - Underwater directional cutting equipment for concrete removal and cutting method thereof - Google Patents

Underwater directional cutting equipment for concrete removal and cutting method thereof Download PDF

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Publication number
CN114908672A
CN114908672A CN202210517865.XA CN202210517865A CN114908672A CN 114908672 A CN114908672 A CN 114908672A CN 202210517865 A CN202210517865 A CN 202210517865A CN 114908672 A CN114908672 A CN 114908672A
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China
Prior art keywords
block
underwater
concrete
rope saw
fixing groove
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CN202210517865.XA
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Chinese (zh)
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CN114908672B (en
Inventor
谢志杰
刘则邹
黄茂兴
张润德
罗锦雄
罗海腾
何玉婷
黎锦钊
梁何龙
钟政坤
王君杰
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Sheyang Runyang Concrete Engineering Co ltd
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Guangdong Yuantian Engineering Co Ltd
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Priority to CN202210517865.XA priority Critical patent/CN114908672B/en
Publication of CN114908672A publication Critical patent/CN114908672A/en
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/02—Piers; Abutments ; Protecting same against drifting ice
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00—Material constitution of bridges
    • E01D2101/20—Concrete, stone or stone-like material
    • E01D2101/24—Concrete
    • 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
    • Y02E10/20—Hydro energy

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The invention relates to the technical field of concrete removal, in particular to underwater directional cutting equipment for concrete removal and a cutting method thereof, wherein the underwater directional cutting equipment comprises a driving mechanism and a clamp; the driving mechanism drives the rotating disc to drive the rope saw to rotate so as to cut the concrete building; the other end of the rope saw passes through the clamp; the clamp can be fixed on an underwater concrete building under the condition that workers do not go underwater; according to the underwater directional cutting equipment for cutting concrete, after entering water through the first block, the second block and the third block, a worker pulls the rope saw to enable the first block and the second block to rotate around a pier, then electromagnets on the first block and the second block enable the first block and the second block to be adsorbed together, the output end of the electric push rod extends into the second fixing groove to fix and tighten the first block and the second block, the first block and the second block are prevented from being separated, the clamp can be fixed on the pier by the worker without launching water, and safety and convenience of the worker are guaranteed.

Description

Underwater directional cutting equipment for concrete removal and cutting method thereof
Technical Field
The invention relates to the technical field of concrete removal, in particular to underwater directional cutting equipment for concrete removal and a cutting method thereof.
Background
Concrete generally refers to cement as a cementing material, and sand and stone as aggregates; the cement concrete is mixed with water (containing an additive and an admixture) according to a certain proportion and stirred to obtain the cement concrete, also called as common concrete, which is widely applied to civil engineering; the concrete has the characteristics of rich raw materials, low price and simple production process, so that the consumption of the concrete is increased more and more, and the concrete is widely applied to buildings such as houses, bridges and the like in the construction industry;
an underwater concrete building (such as a bridge pier) is placed below the water surface, a worker cuts the underwater concrete building by a rope saw method commonly, the worker sleeves one end of a rope saw on a rotating disc driven by a motor or a diesel engine, the other end of the rope saw needs the worker to launch, and a clamp with a roller for changing the direction of the rope saw is fixed on the underwater concrete building; when the concrete building is in a deep area, workers need to wear diving equipment and dive underwater to fix the clamp on the concrete building, and the concrete building is very inconvenient.
In view of the above, in order to overcome the above technical problems, the present invention provides an underwater directional cutting device for concrete removal and a cutting method thereof, which solve the above technical problems.
Disclosure of Invention
In order to make up for the defects of the prior art, the underwater directional cutting equipment for concrete removal and the cutting method thereof provided by the invention have the advantages that after the underwater directional cutting equipment for concrete removal enters water through the first block, the second block and the third block, a worker pulls the rope saw to enable the first block and the second block to rotate around a pier, then electromagnets on the first block and the second block enable the first block and the second block to be adsorbed together, the output end of the electric push rod extends into the second fixing groove to fixedly tighten the first block and the second block, and the first block and the second block are prevented from being separated, so that the clamp can be fixed on the pier by the worker without launching, and the safety of the worker is guaranteed and the worker is more convenient.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to underwater directional cutting equipment for concrete removal, which comprises:
a drive mechanism; the driving mechanism drives the rotating disc to drive the rope saw to rotate so as to cut the concrete building; in the embodiment, the driving mechanism is a motor; the rope saw is annular;
a clamp; the rope saw passes through the clamp; the clamp can be fixed on an underwater concrete building under the condition that workers do not go into water;
a controller; the controller is used for controlling the operation of the driving mechanism and the power utilization part on the clamp.
Preferably, the clamp comprises a first block, a second block and a third block; the first block and the second block are respectively connected to two sides of the third block; sliding channels are formed in the first block and the second block; the sliding channel is L-shaped, and a roller is fixedly connected in the sliding channel; the rope saw penetrates through the sliding channels on the first block and the second block;
electromagnets are embedded in the first block and the second block; a first fixing groove and a second fixing groove are respectively formed in the first block and the second block; an electric push rod is fixedly connected in the first fixing groove; the output end of the electric push rod can enter the second fixing groove; the electromagnets on the first block and the second block are powered by power supplies embedded in the first block and the second block.
Preferably, the first fixing groove and the second fixing groove are obliquely arranged.
Preferably, the left side of the third block is provided with a first rotating groove, and the right side of the third block is provided with a second rotating groove; two adjacent third blocks are rotationally connected through the same bolt; the bolts are inserted into the first groove and the second groove and are in threaded connection with the bottom of the second groove; two third blocks close to the first block and the second block are respectively connected with the first block and the second block on the left side and the right side in a rotating mode.
Preferably, the output end of the electric push rod is fixedly connected with a sealing block with the same diameter as the output end of the electric push rod; the sealing block is made of rubber.
Preferably, a fixed block for increasing friction force is fixedly connected to the contact surface of the third block and the concrete; the fixed block is made of rubber.
Preferably, the shape of the third block is an arc.
Preferably, the outer side of the third block is fixedly connected with a protective net.
Preferably, the first block and the second block are both provided with a guide-out groove; the guide-out groove is communicated with the corner of the sliding channel.
The underwater directional cutting method for concrete removal is suitable for the underwater directional cutting equipment for concrete removal, and comprises the following steps:
s1: firstly, a driving mechanism is placed on the ground beside water, an annular rope saw is sleeved on a rotating disc, and the other end of the rope saw penetrates through a first block and a second block;
s2: the worker lifts the rope saws at the two ends of the first block and the second block, the first block, the second block and the third block are sunk under water, the electromagnet is electrified, and then the rope saws are pulled backwards to be pulled, so that the first block and the second block are adsorbed together around a bridge pier, and the third block is wound on the bridge pier;
s3: the controller controls the electric push rod to push the sealing block into the second fixing groove, so that the first block and the second block are fixed, and then the driving device is started to drive the rotating disc to rotate the rope saw to cut the bridge pier;
s4: after the cutting is finished, the driving device is stopped, the electromagnet is powered on, the electric push rod is controlled to drive the sealing block to return to the first fixing groove, the worker pulls the rope saws at the two ends of the first block and the second block, and the first block, the second block and the third block are pulled out of the water surface.
The invention has the following beneficial effects:
1. according to the underwater directional cutting equipment for cutting concrete, after entering water through the first block, the second block and the third block, a worker pulls the rope saw to enable the first block and the second block to rotate around a pier, then electromagnets on the first block and the second block enable the first block and the second block to be adsorbed together, the output end of the electric push rod extends into the second fixing groove to fix and tighten the first block and the second block, the first block and the second block are prevented from being separated, the clamp can be fixed on the pier by the worker without launching water, and safety and convenience of the worker are guaranteed.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a partial cross-sectional view of the second block of the present invention;
FIG. 3 is a partial cross-sectional view of a first block and a second block of the present invention;
FIG. 4 is a cross-sectional view of block number three of the present invention;
FIG. 5 is a flow chart of a method of the present invention for underwater directional cutting for concrete removal;
in the figure: 1. a drive mechanism; 2. rotating the disc; 3. a rope saw; 4. a clamp; 41. a first block; 42. a block number two; 43. a third block; 44. a lead-out slot; 5. a slide channel; 51. a roller; 52. an electromagnet; 53. a first fixing groove; 54. a second fixing groove; 55. an electric push rod; 56. a sealing block; 6. a first rotating groove; 61. a second rotary groove; 62. a bolt; 7. a fixed block; 71. and (4) a protective net.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
An underwater directional cutting apparatus for concrete removal, comprising:
a drive mechanism 1; the driving mechanism 1 drives the rotating disc 2 to drive the rope saw 3 to rotate, and the concrete building is cut; in the embodiment, the driving mechanism 1 is a motor; the rope saw 3 is annular;
a clamp 4; the rope saw 3 passes through the clamp 4; the clamp 4 can be fixed on an underwater concrete building under the condition that workers do not go underwater;
a controller; the controller is used for controlling the operation of the electric parts on the driving mechanism 1 and the clamp 4.
As an embodiment of the present invention, the jig 4 includes a first block 41, a second block 42, and a third block 43; the first block 41 and the second block 42 are respectively connected to two sides of the third block 43; the first block 41 and the second block 42 are provided with sliding channels 5; the sliding channel 5 is L-shaped, and a roller 51 is fixedly connected in the sliding channel 5; the rope saw 3 passes through the sliding channels 5 on the first block 41 and the second block 42;
electromagnets 52 are embedded in the first block 41 and the second block 42; a first fixing groove 53 and a second fixing groove 54 are respectively formed on the first block 41 and the second block 42; an electric push rod 55 is fixedly connected in the first fixing groove 53; the output end of the electric push rod 55 can enter the second fixing groove 54; the electromagnets 52 on the first block 41 and the second block 42 are powered by power sources embedded in the first block 41 and the second block 42.
As an embodiment of the present invention, the first fixing groove 53 and the second fixing groove 54 are obliquely disposed.
When the underwater concrete cutting device works, taking the bridge pier as an example, the bridge pier is installed below the water surface, a worker cuts an underwater concrete building by a rope saw 3 method commonly, the worker sleeves one end of the rope saw 3 on a rotating disc 2 driven by a motor or a diesel engine, the other end of the rope saw 3 needs to be launched by the worker, and a clamp 4 with a roller 51 for changing the direction of the rope saw 3 is fixed on the underwater concrete building; when the concrete building is in a deep water area, workers need to wear diving equipment and dive underwater to fix the clamp 4 on the concrete building, which is very inconvenient;
therefore, when using the underwater directional cutting equipment for concrete cutting, a worker firstly places the driving mechanism 1 on the ground beside the water and sleeves the annular rope saw 3 on the rotating disc 2; the worker puts the first block 41, the second block 42 and the third block 43 into a row, then two hands lift the rope saws 3 at two ends of the first block 41 and the second block 42, the first block 41, the second block 42 and the third block 43 are put into water and close to a concrete pier and other buildings at the bottom of the water, and the electromagnets 52 on the first block 41 and the second block 42 are controlled by the controller to pass through current with opposite flow directions, so that the electromagnets 52 of the first block 41 and the second block 42 are opposite in magnetism; then, the two hands of the worker pull the rope saw 3 backwards, so that the rope saw 3 drives the first block 41 and the second block 42 to move towards the mutually approaching direction, the third block 43 is wound on a bridge pier until the first block 41 and the second block 42 approach each other and are mutually adsorbed under the action of the electromagnet 52, the third block 43 surrounds the bridge pier, the controller controls the output end of the electric push rod 55 to extend out, the output end of the electric push rod 55 extends out, the second fixing groove 54 on the second block 42 is clamped, the first block 41 and the second block 42 are relatively fixed, the clamp 4 is fixed on the bridge pier, the first fixing groove 53 and the second fixing groove 54 are obliquely arranged, and compared with the vertical arrangement, the output end of the electric push rod 55 can still be clamped in the second fixing groove 54 when a force is applied in the vertical direction; the operator controls the driving mechanism 1 to drive the rotating disc 2 to rotate through the controller, so that the rotating disc 2 drives the annular rope saw 3 to rotate, the rope saw 3 changes direction through the sliding channel 5 on the first block 41 and the second block 42 and through the roller 51, the direction is perpendicular to the axial direction of the bridge pier, the rope saw 3 is driven by the rotating disc 2 to rotate, and the bridge pier at the first block 41 and the second block 42 is cut; after cutting, the operator controls the driving mechanism 1 to stop rotating through the controller, then controls the output end of the electric push rod 55 to retract into the first fixing groove 53, stops introducing current into the electromagnets 52 on the first block 41 and the second block 42, then pulls the rope saw 3, pulls the rope saws 3 at the two ends of the first block 41 and the second block 42 towards the direction away from each other, so that the first block 41 and the second block 42 are separated, and pulls the rope saw 3 upwards to drive the first block 41, the second block 42 and the third block 43 to ascend together and pull out of the water surface;
after the underwater directional cutting equipment for cutting concrete enters water through the first block 41, the second block 42 and the third block 43, a worker pulls the rope saw 3 to enable the first block 41 and the second block 42 to rotate around a pier, then electromagnets 52 on the first block 41 and the second block 42 enable the first block 41 and the second block 42 to be adsorbed together, the output end of an electric push rod 55 extends into the second fixing groove 54 to fix and tighten the first block 41 and the second block 42, and the first block 41 and the second block 42 are prevented from being separated, so that the worker can fix the clamp 4 on the pier without launching, and the safety of the worker is guaranteed and the worker is more convenient.
As an embodiment of the present invention, the first rotation groove 6 is formed on the left side of the third block 43, and the second rotation groove 61 is formed on the right side; two adjacent third blocks 43 are rotatably connected through the same bolt 62; the bolt 62 is inserted into the first groove and the second groove and is in threaded connection with the bottom of the second groove; two third blocks 43 adjacent to the first block 41 and the second block 42 are rotatably connected to the left side and the right side of the first block 41 and the second block 42, respectively.
When a worker prepares for work on the shore, the number of the third blocks 43 arranged between the first block 41 and the second block 42 is set according to the diameter of the pier, all the third blocks 43 are arranged between the first block 41 and the second block 42 and have a structure similar to that of a chain, the worker screws the bolts 62 to screw the bolts 62 out of the second grooves, so that the connection between the two adjacent third blocks 43 is disconnected, the worker can install other prepared third blocks 43 between the two disconnected third blocks 43, then insert the bolts 62 into the corresponding first grooves and second grooves and screw the bolts 62 into the second grooves, so that the number of the third blocks 43 between the first block 41 and the second block 42 is increased, the device can be arranged on the pier with a larger diameter, and the application range of the device is increased.
As an embodiment of the present invention, the output end of the electric push rod 55 is fixedly connected with a sealing block 56 having the same diameter as the output end; the sealing block 56 is made of rubber.
As an implementation mode of the invention, a fixed block 7 for increasing friction force is fixedly connected to the contact surface of the third block 43 and concrete; the fixed block 7 is made of rubber.
In one embodiment of the present invention, the third block 43 has an arc shape.
As an embodiment of the present invention, a protective net 71 is attached to the outside of the third block 43.
As an embodiment of the present invention, the first block 41 and the second block 42 are both provided with a lead-out groove 44; the lead-out groove 44 communicates with the corner of the slide passage 5.
When the output end of the electric push rod 55 and the sealing block 56 are positioned in the first fixing groove 53, the opening of the first fixing groove 53 is blocked by the sealing block 56, so that water cannot contact with the electric push rod 55 along the first fixing groove 53 after the clamp 4 is filled with water; when the output end of the electric push rod 55 extends out, the sealing block 56 enters the second fixing groove 54, part of the sealing block 56 is still positioned in the first groove, and the first fixing groove 53 is still in a sealing state, so that water is prevented from entering the first fixing groove 53 and damaging the electric push rod 55; the third block 43 is arranged into an arc shape, and the fixing block 7 is fixedly connected to the side face, which is in contact with the pier, so that the third block 43 is more attached to the pier, the friction force between the third block 43 and the pier is increased, the rope saw 3 is prevented from rotating, and the concrete pier is cut under the condition that the friction force between the third block 43 and the pier is too small and the concrete pier shakes; the outer side of the third block 43 is fixedly connected with a protective net 71, and all the protective nets 71 shield the section of the rope saw 3 in contact with the pier, so that peripheral water flow is prevented from being driven to flow when the rope saw 3 rotates, and garbage suspended in the water flow enters the section of the rope saw 3 in contact with the pier under the driving of the water flow, and the cutting effect of the rope saw 3 is influenced; set up on a piece 41 and No. two piece 42 sliding channel 5's corner and derive groove 44 to carry the muddy leading soil granule behind rope saw 3 cutting concrete, because the velocity of flow changes after getting into rope saw 3 sliding channel 5 corner, the concrete granule is through deriving groove 44 outflow after sliding channel 5 department deposit, thereby prevents that the concrete granule from deposiing in sliding channel 5, influences the effect of gyro wheel 51 transmission rope saw 3.
The underwater directional cutting method for concrete removal is suitable for the underwater directional cutting equipment for concrete removal, and comprises the following steps:
s1: firstly, the driving mechanism 1 is placed on the ground beside the water, the annular rope saw 3 is sleeved on the rotating disc 2, and the other end of the rope saw 3 penetrates through the first block 41 and the second block 42;
s2: the worker lifts the rope saws 3 at the two ends of the first block 41 and the second block 42, the first block 41, the second block 42 and the third block 43 are submerged under water, the electromagnet 52 is electrified, and then the rope saws 3 are pulled backwards, so that the first block 41 and the second block 42 are adsorbed together by bypassing the bridge pier, and the third block 43 is wound on the bridge pier;
s3: the controller controls the electric push rod 55 to push the sealing block 56 into the second fixing groove 54, so that the first block 41 and the second block 42 are fixed, and then the driving device is started to drive the rotating disc 2 to rotate the rope saw 3 to cut the bridge pier;
s4: after cutting, the driving device is stopped, the electromagnet 52 is powered on, the electric push rod 55 is controlled to drive the sealing block 56 to return to the first fixing groove 53, the worker pulls the rope saws 3 at the two ends of the first block 41 and the second block 42, and the first block 41, the second block 42 and the third block 43 are pulled out of the water surface.
While there have been shown and described what are at present considered to be the fundamental principles of the invention, its essential features and advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is to be accorded the full scope of the invention as hereinafter claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. An underwater directional cutting apparatus for concrete removal, comprising:
a drive mechanism (1); the driving mechanism (1) drives the rotating disc (2) to drive the rope saw (3) to rotate, so as to cut the concrete building; in the embodiment, the driving mechanism (1) is a motor; the rope saw (3) is annular;
the method is characterized in that:
a clamp (4); the rope saw (3) passes through the clamp (4); the clamp (4) can be fixed on an underwater concrete building under the condition that workers do not go underwater;
a controller; the controller is used for controlling the work of the power utilization parts on the driving mechanism (1) and the clamp (4).
2. The underwater directional cutting apparatus for concrete removal according to claim 1, wherein: the clamp (4) comprises a first block (41), a second block (42) and a third block (43); the first block (41) and the second block (42) are respectively connected to two sides of the third block (43); sliding channels (5) are formed in the first block (41) and the second block (42); the sliding channel (5) is L-shaped, and a roller (51) is fixedly connected in the sliding channel (5); the rope saw (3) passes through the sliding channels (5) on the first block (41) and the second block (42);
electromagnets (52) are embedded in the first block (41) and the second block (42); a first fixing groove (53) and a second fixing groove (54) are respectively formed in the first block (41) and the second block (42); an electric push rod (55) is fixedly connected in the first fixing groove (53); the output end of the electric push rod (55) can enter the second fixing groove (54).
3. The underwater directional cutting apparatus for concrete removal of claim 2, wherein: the first fixing groove (53) and the second fixing groove (54) are obliquely arranged.
4. The underwater directional cutting apparatus for concrete removal according to claim 2, wherein: a first rotating groove (6) is formed in the left side of the third block (43), and a second rotating groove (61) is formed in the right side of the third block; two adjacent third blocks (43) are rotationally connected through the same bolt (62); the bolt (62) is inserted into the first groove and the second groove and is in threaded connection with the bottom of the second groove; two third blocks (43) close to the first block (41) and the second block (42) are respectively and rotatably connected with the first block (41) and the second block (42) on the left side and the right side.
5. The underwater directional cutting apparatus for concrete removal according to claim 2, wherein: the output end of the electric push rod (55) is fixedly connected with a sealing block (56) with the same diameter as the electric push rod.
6. The underwater directional cutting apparatus for concrete removal of claim 2, wherein: and a fixed block (7) for increasing friction force is fixedly connected to the contact surface of the third block (43) and the concrete.
7. The underwater directional cutting apparatus for concrete removal according to claim 2, wherein: the third block (43) is arc-shaped.
8. The underwater directional cutting apparatus for concrete removal according to claim 2, wherein: and a protective net (71) is fixedly connected to the outer side of the third block (43).
9. The underwater directional cutting apparatus for concrete removal according to claim 2, wherein: the first block (41) and the second block (42) are both provided with a guide-out groove (44); the guide-out groove (44) is communicated with the corner of the sliding channel (5).
10. An underwater directional cutting method for concrete removal, which is applied to any of the underwater directional cutting apparatuses for concrete removal of claims 1 to 9, characterized in that: the cutting method comprises the following steps:
s1: firstly, a driving mechanism (1) is placed on the ground beside water, an annular rope saw (3) is sleeved on a rotating disc (2), and the other end of the rope saw (3) penetrates through a first block (41) and a second block (42);
s2: the worker lifts the rope saws (3) at the two ends of the first block (41) and the second block (42), the first block (41), the second block (42) and the third block (43) are submerged under water, the electromagnet (52) is electrified, and then the rope saws (3) are pulled backwards, so that the first block (41) and the second block (42) bypass the bridge pier to be adsorbed together, and the third block (43) is wound on the bridge pier;
s3: the controller controls the electric push rod (55) to push the sealing block (56) into the second fixing groove (54), so that the first block (41) and the second block (42) are fixed, and then the driving device is started to drive the rotating disc (2) to rotate the rope saw (3) to cut the bridge pier;
s4: after cutting, the driving device is stopped, the electromagnet (52) is powered on, the electric push rod (55) is controlled to drive the sealing block (56) to return to the first fixing groove (53), and a worker pulls the rope saws (3) at the two ends of the first block (41) and the second block (42) and pulls the first block (41), the second block (42) and the third block (43) out of the water surface.
CN202210517865.XA 2022-05-13 2022-05-13 Underwater directional cutting equipment for concrete cutting and cutting method thereof Active CN114908672B (en)

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Publication number Priority date Publication date Assignee Title
JP2005088129A (en) * 2003-09-17 2005-04-07 Toshiba Plant Systems & Services Corp Underwater cutting device
JP2008185340A (en) * 2007-01-26 2008-08-14 Kobe Steel Ltd Radioactive solid waste cutting device and method
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