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CN-122013801-A - Underwater sinking and floating cofferdam device with double water stopping functions

CN122013801ACN 122013801 ACN122013801 ACN 122013801ACN-122013801-A

Abstract

The invention relates to the technical field of underwater cofferdam construction equipment, in particular to an underwater sinking and floating cofferdam device with double water stopping, which comprises a pontoon, a supporting frame and a steel cofferdam which is suspended and settled by a manual hoist, wherein the bottom of the steel cofferdam is provided with a double water stopping mechanism, the steel cofferdam is provided with a supporting plate, a sliding plate, a first spring and an outer rubber sleeve, the sliding plate is pressed down by the spring to enable the rubber sleeve to be attached to the water bottom to realize the first mechanical water stopping, the inner side of the steel cofferdam is provided with an air pump and an air bag, the air bag expands and extrudes the rubber sleeve to fill a gap to realize the second pneumatic water stopping, the outer wall is provided with a stabilizing mechanism which is used for driving a presser foot barb to catch ground by a gear rack, a spring damping buffer mechanism is arranged on a flank, and a ratchet locking and connecting mechanism is arranged at the top. The invention can realize double tight blocking by self-adapting to complex underwater topography, greatly improves the anti-flow impact and anti-slip capability, effectively solves wave shock and pulling, and provides dry land safe operation space for structural repair.

Inventors

  • JIA XINSHENG
  • ZHOU SHAOFENG
  • LI DIANJI
  • ZHANG LIANGFANG
  • SHAO SHIWEI
  • AN TINGTING

Assignees

  • 南水北调东线山东干线有限责任公司

Dates

Publication Date
20260512
Application Date
20260313

Claims (10)

  1. 1. The utility model provides a take underwater sink-float cofferdam device of double-channel stagnant water, its characterized in that, including a plurality of flotation pontoon (1), a plurality of flotation pontoon (1) top is through support frame (2) fixed connection, a plurality of be connected with between flotation pontoon (1) and support crossbearer (13), support frame (2) downside is provided with a plurality of manual hoist (3), manual hoist (3) end swing joint has steel cofferdam (4), sealing mechanism is installed to steel cofferdam (4) bottom, coupling mechanism is installed to steel cofferdam (4) upper surface one side, buffer gear is installed to steel cofferdam (4) flank upper surface, stabilizing mean is installed near support crossbearer (13) one side to steel cofferdam (4) outer wall; The water stopping mechanism comprises a supporting plate (5), the upper surface of the supporting plate (5) is fixedly connected to the lower surface of a steel cofferdam (4), a sliding plate (6) is slidably connected to the inner side of the supporting plate (5), a first spring (7) is arranged between the upper surface of the sliding plate (6) and the inner side of the supporting plate (5), a rubber sleeve (8) is arranged on the lower surface of the steel cofferdam (4), the rubber sleeve (8) is sleeved outside the sliding plate (6) and the first spring (7), a plurality of supporting cross frames (13) are connected between the pontoons (1), an air pump (9) is fixedly connected to one side of the upper surface of each supporting cross frame (13), a transmission pipe (10) is fixedly connected to the output end of each air pump (9), one end of each transmission pipe (10) is fixedly connected with an air bag (11), one side of the outer wall of each air bag (11) is fixedly connected to the upper side of the steel cofferdam (4), and the inner wall of each air bag (11) is close to the upper side of the rubber sleeve (8), and the outer side of each air bag (11) is fixedly connected with a three-way valve (12). The novel water pump is characterized in that a water pump (14) is fixedly connected to the other side of the upper surface of the supporting transverse frame (13), a liquid discharge pipe (15) is fixedly connected to the input end of the water pump (14), a water discharge pipe for discharging a water source is fixedly connected to the output end of the water pump (14), and a propeller (16) is fixedly connected to the middle of the upper surface of the supporting transverse frame (13).
  2. 2. The underwater submerged and floating cofferdam device with double water stopping functions according to claim 1, wherein the stabilizing mechanism comprises a sliding rail (17), one side of the outer wall of the sliding rail (17) is fixedly connected with one side of the outer wall of a steel cofferdam (4), the outer wall of the sliding rail (17) is slidably connected with an L-shaped rack plate (21), one side of the outer wall of the L-shaped rack plate (21) is fixedly connected with a sliding block (20), one side of the outer wall of the steel cofferdam (4) close to the L-shaped rack plate (21) is fixedly connected with a second connecting block (22), a rotating rod (23) is connected in an internal rotating mode, the outer wall of the rotating rod (23) is fixedly connected with a gear (24), the gear (24) is meshed with the outer wall of the L-shaped rack plate (21) to rotate, a positioning assembly is installed on the outer wall of the rotating rod (23), and a driving assembly is installed on the outer wall of the steel cofferdam (4) close to one side of the sliding rail (17).
  3. 3. The underwater submerged and floating cofferdam device with double water stopping functions according to claim 2, wherein the positioning assembly comprises a rotating plate (25), one side inside the rotating plate (25) is fixedly connected to one side of the outer wall of the rotating rod (23), the other side of the outer wall of the rotating plate (25) is fixedly connected with a presser foot (26), and the lower surface of the presser foot (26) is fixedly connected with a plurality of barbs (27).
  4. 4. The underwater submerged and floating cofferdam device with the double-channel water stop function according to claim 2, wherein the driving assembly comprises a plurality of first connecting blocks (18), the two first connecting blocks (18) are fixedly connected to one side of the outer wall of the steel cofferdam (4) in an up-down symmetrical mode, a threaded rod (19) is rotatably connected to the inside of the first connecting blocks (18), a sliding block (20) is connected to the outer wall of the threaded rod (19) in a threaded mode, and one side of the outer wall of the sliding block (20) is fixedly connected to one side of the outer wall of the L-shaped rack plate (21).
  5. 5. The underwater submerged and floating cofferdam device with double water stopping functions according to claim 1, wherein the buffer mechanism comprises a connecting cross rod (33), a first chain (34) and a second chain (35), two ends of the connecting cross rod (33) are respectively fixed on the inner side of the supporting frame (2), the upper end of the first chain (34) is fixed on the lower surface of the connecting cross rod (33), the lower end of the second chain (35) is fixed on the upper surface of a side wing of the steel cofferdam (4), and a buffer assembly is installed between the first chain (34) and the second chain (35).
  6. 6. The underwater submerged and floating cofferdam device with double water stopping functions according to claim 5, wherein the buffer assembly comprises a connecting shell (36), the lower surface of the connecting shell (36) is fixedly connected with the upper end of a second chain (35), a sliding block (38) is slidably connected inside the connecting shell (36), a connecting rod (39) is fixedly connected with the upper surface of the sliding block (38), the upper end of the connecting rod (39) is fixedly connected with the lower end of a first chain (34), a spring damper (37) is fixedly connected with the lower surface of the sliding block (38), and the lower end of the spring damper (37) is fixedly connected with the bottom of the inner wall of the connecting shell (36).
  7. 7. The underwater submerged and floating cofferdam device with double water stopping according to claim 6, wherein a second spring (40) is sleeved on the outer wall of the connecting rod (39), the upper end of the second spring (40) is abutted to the top of the inner wall of the connecting shell (36), and the lower end of the second spring (40) is abutted to the upper surface of the sliding block (38).
  8. 8. The underwater submerged and floating cofferdam device with the double-way water stop function according to claim 1, wherein the connecting mechanism comprises a support (28), the lower surface of the support (28) is fixedly connected to one side of the upper surface of the steel cofferdam (4), a rotating roller (29) is rotatably connected inside the support (28), a connecting chain rope (30) is fixedly connected to the outer wall of the rotating roller (29), and a locking assembly is installed on the outer wall of the rotating roller (29).
  9. 9. The underwater submerged and submerged cofferdam device with double water stopping function according to claim 8, wherein the locking assembly comprises a ratchet wheel (31) and a pawl (32), the ratchet wheel (31) is fixedly connected to the outer wall of the rotating roller (29), one side of the pawl (32) is arranged on one side of the upper surface of the bracket (28), and the ratchet wheel (31) is meshed with the outer wall of the pawl (32).
  10. 10. The underwater submerged cofferdam device with double water stop according to claim 1, wherein the upper end of the first spring (7) is abutted against the inner side of the supporting plate (5), the lower end of the first spring (7) is abutted against the upper surface of the sliding plate (6), and the lower surface of the sliding plate (6) is abutted against the inner wall of the rubber sleeve (8).

Description

Underwater sinking and floating cofferdam device with double water stopping functions Technical Field The invention relates to the technical field of underwater cofferdam construction equipment, in particular to an underwater sinking and floating cofferdam device with double water stopping. Background In the daily maintenance and upgrading and reconstruction engineering of water conservancy junctions, water delivery channels and shipping riverways, the structures such as underwater concrete slope protection, water retaining walls and the like are extremely easy to generate surface peeling, cracking, local subsidence and other damage phenomena due to long-term influence of water flow scouring, ship navigation wave disturbance and seasonal freeze thawing alternation. In order to thoroughly repair these damaged underwater structures, construction personnel are typically required to isolate the construction area from the external body of water by means of underwater cofferdam equipment and to perform dry repair operations after draining the internal ponding. Along with the normalized development of modern shipping, most riverways cannot be matched with maintenance by lowering the water level in a large range, so that the adoption of the repeatedly movable submerged and floating underwater cofferdam for carrying out local isolation and evacuation becomes a main technical means for solving the problem of the underwater maintenance at present. When the submerged underwater cofferdam is operated, the submerged underwater cofferdam is lowered to a designated underwater damaged position by means of a hoisting or submerged mechanism, and the bottom edge of the submerged underwater cofferdam is directly seated on the surface of a river bed or a concrete slope protection to be maintained. In order to ensure the safety of the operation after the internal drainage, the bottom of the cofferdam must have extremely reliable sealing water stopping performance. At present, an ordinary rubber water stop is adhered to the edge of the bottom of the existing sinking and floating cofferdam, and after sinking in place, the rubber water stop is pressed downwards by simply relying on the huge gravity of the cofferdam structure, so that compression deformation is generated to fill gaps between the cofferdam and the surface of the bottom layer, and the purpose of blocking external water flow is achieved. However, this conventional water stop method exposes significant limitations in actual complex underwater conditions. The surface of the damaged underwater concrete slope protection or natural river bed is often uneven, and a large number of cracks, sills and irregular peeling pits exist. When the cofferdam made of rigid materials sits on the bottom, the passive deformation of the common rubber belt at the bottom is extremely limited, and the uneven topography with large drop can not be matched with the depth in a self-adaptive manner. Meanwhile, due to the lack of active and continuous flexible extrusion compensation force, the edges of the water stop belt are difficult to tightly fill broken cracks or tiny holes in the mud layer. When the water pump is started to pump water outwards, huge water pressure difference can be formed inside and outside the cofferdam rapidly, and the outside Jiang Shuiji is easy to penetrate inwards along the tiny gaps which are not completely plugged strongly and even cause piping phenomenon, so that a dry land operation environment cannot be formed, and the life safety of constructors in the pits can be seriously threatened. There is a need for a sealing device that can actively adapt to complex and variable underwater topography and that can perform multiple deep packing of fine leakage gaps. Therefore, the invention provides an underwater sinking and floating cofferdam device with double water stopping, which solves the defects in the prior art. Disclosure of Invention Aiming at the defects of the prior art, the invention provides an underwater sinking and floating cofferdam device with double water stopping, which solves the problems that the water stopping structure at the bottom of the existing underwater sinking and floating cofferdam is single and has too high rigidity, and when facing a complex concave-convex riverbed or damaged concrete slope protection, the device cannot adapt to the deep deformation lamination of terrain, so that leakage and piping are extremely easy to occur along a tiny gap under the condition of huge internal and external water pressure difference, and a dry safe operation environment is difficult to form. The underwater sinking and floating cofferdam device with the double water stopping function comprises a plurality of buoys, wherein the buoys are fixedly connected through a supporting frame, a plurality of manual hoists are arranged on the lower side of the supporting frame, the end parts of the manual hoists are movably connected with steel cofferdams, a water stopping m