Underwater buried steel cofferdam structure cleaning device

Abstract

The utility model relates to an underwater buried steel cofferdam structure cleaning device which effectively solves the problem that the inner wall of an underwater cofferdam is difficult to clean. According to the technical scheme, the device comprises a sliding rod and a hammering block, a sliding hole is formed in the hammering block, the sliding rod is arranged in the sliding hole in a penetrating mode so that the hammering block can slide in the axial direction of the sliding rod, and a cleaning unit is arranged on the left side of the hammering block; an inclined water passing groove is formed in the hammering block, one end of the water passing groove is formed in the left side wall of the upper left portion of the hammering block and located above the cleaning unit, the other end of the water passing groove is formed in the bottom face of the lower right portion of the hammering block, and the width of the water passing groove is gradually reduced from the lower right portion to the upper left portion; according to the utility model, the free falling body of the hammering block is used for tamping a soil body, in the falling process of the hammering block, the steel wire brush is used for cleaning the inner wall of the cofferdam, and the brushed inner wall of the cofferdam is flushed through the extrusion of the water passing groove on water, so that the inner wall of the cofferdam is effectively brushed; the operation is simple, the practicability is high, the carrying is convenient, and the repeated utilization rate is high.

Description

Technical Field

[0001] The utility model relates to the field of cofferdam construction, and specifically relates to a cleaning device for the structure of an underwater steel cofferdam that penetrates into the soil. Background Art

[0002] Cofferdam construction is a common technique for underwater concrete pouring. After the underwater excavation of the cofferdam reaches the designed depth, underwater blinding concrete needs to be poured. Before pouring, the inner wall of the cofferdam needs to be cleaned. Otherwise, the muck on the inner wall of the cofferdam will affect the adhesion between the concrete and the cofferdam, resulting in pit defects on the concrete surface. Currently, professional divers are arranged to clean the inner wall of the underwater cofferdam, which has low efficiency, high risk, and is prone to incomplete cleaning.

[0003] The invention patent with the application number CN202310010245.1 discloses a cleaning device for the outer surface of the steel casing inside the cofferdam. It utilizes the fan blades between the inner ring and the outer ring to drive the device to rotate by the impact force of water during the falling process of the device, so that the cleaning head cleans the side wall of the cofferdam. The overall structure of this device is complex, large and heavy in volume, and it can only be applied to the cleaning of circular cofferdams. Therefore, its flexibility and applicability are poor. Summary of the Invention

[0004] In order to solve the problem of difficult cleaning of the inner wall of the underwater cofferdam, the utility model provides a cleaning device for the structure of an underwater steel cofferdam that penetrates into the soil.

[0005] The technical solution it adopts includes a sliding rod and a hammering block. The hammering block is provided with a sliding hole, and the sliding rod is inserted into the sliding hole so that the hammering block can slide axially along the sliding rod. A cleaning unit is provided on the left side of the hammering block. An inclined water passing groove is formed inside the hammering block. One end of the water passing groove is opened on the left side wall of the upper left of the hammering block and is located above the cleaning unit, and the other end is opened on the bottom surface of the lower right of the hammering block, and the width of the water passing groove gradually decreases from the lower right to the upper left.

[0006] The cleaning unit includes a dovetail groove opened on the left side wall of the hammering block. The dovetail groove extends in the front-back direction. A dovetail bar is installed in the dovetail groove. The dovetail bar is fixed in the dovetail groove by bolts, and a wire brush is fixed on the left side of the dovetail bar.

[0007] Multiple groups of the cleaning units are distributed vertically and horizontally on the left side of the hammering block.

[0008] A lifting ring is provided on the top of the hammering block.

[0009] Two sliding rods are arranged side by side in the front-back direction, and the lower ends of the two sliding rods are fixed by a horizontal connecting rod.

[0010] Four fins are provided at the lower end of each sliding rod in the front, back, left, and right directions.

[0011] The utility model utilizes the free fall of the hammer block to complete the compaction of the soil. During the falling process of the hammer block, the inner wall of the cofferdam is cleaned by the wire brush, and the inner wall of the cofferdam swept by the brush is flushed by squeezing water through the water trough, so that the inner wall of the cofferdam is effectively brushed. The utility model has the advantages of simple operation, strong practicality, convenient carrying and high reusability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front sectional view of the utility model.

[0013] Figure 2 It is the right view of the utility model.

[0014] Figure 3 for Figure 1 Enlarged view of position A in the middle. DETAILED DESCRIPTION

[0015] In conjunction with the accompanying drawings, the utility model includes a sliding rod 1 and a hammer block 2. The hammer block 2 is provided with a sliding hole. The sliding rod 1 is inserted into the sliding hole so that the hammer block 2 can slide axially along the sliding rod 1. A cleaning unit is provided on the left side of the hammer block 2. The sliding rod 1 is close to the inner wall of the cofferdam and its lower end is inserted into the soil at the bottom of the cofferdam. The cleaning unit on the left side of the hammer block 2 contacts the inner wall of the cofferdam. The hammer block 2 slides down along the sliding rod 1. The cleaning unit cleans the inner wall of the cofferdam. The hammer block 2 tamps the soil when it falls to the ground. The hammer block 2 An oblique water trough 3 is opened inside, one end of the water trough 3 is opened on the left side wall at the upper left of the hammer block 2, and is located above the cleaning unit, and the other end is opened on the bottom surface at the lower right of the hammer block 2, and the width of the water trough 3 gradually decreases from the lower right to the upper left. When the hammer block 2 falls in the water, water will be filled into the lower right slot of the water trough 3, and as the width of the water trough 3 gradually decreases from the lower right to the upper left, the water flow rate in the slot gradually increases, and finally sprays out from the upper left slot to flush the inner wall of the cofferdam swept by the cleaning unit.

[0016] The cleaning unit includes a dovetail groove 4 opened on the left side wall of the hammer block 2, the dovetail groove 4 is along the front-to-back direction, a dovetail strip 5 is installed in the dovetail groove 4, the dovetail strip 5 is inserted into the dovetail groove 4 from the front end or rear end of the dovetail groove 4, and the dovetail strip 5 is fixed in the dovetail groove 4 by bolts 6, and a wire brush 7 is fixed on the left side of the dovetail strip 5; when the hammer block 2 slides down, the wire brush 7 contacts the inner wall of the cofferdam; after the wire brush 7 is worn, it can be replaced together with the dovetail strip 5.

[0017] The cleaning units are arranged in groups on the left side of the hammer block 2, and the inner wall of the cofferdam is brushed multiple times.

[0018] A lifting ring 8 is provided on the top of the hammer block 2 for lifting the hammer block 2 .

[0019] There are two sliding rods 1 arranged side by side before and after. The lower ends of the two sliding rods 1 are fixed by a horizontal connecting rod 9. The two sliding rods 1 can prevent the hammering block 2 from rotating, and the connecting rod 9 can also prevent the hammering block 2 from falling off.

[0020] Each lower end of the sliding rod 1 is provided with four fins 10 in the front, back, left and right directions. After the lower end of the sliding rod 1 and the fins 10 are inserted into the soil, the fins 10 can increase the resistance in the radial direction of the sliding rod 1 and prevent the lower end of the sliding rod 1 from shifting.

[0021] When the utility model is in use, the sliding rod 1 is lowered into the water close to the inner wall of the cofferdam and inserted into the underwater soil, so that the fins 10 are completely inserted into the soil to play a stable fixing role. The steel wire brush bristles 7 are in contact with the inner wall of the cofferdam. A certain radial force towards the cofferdam is applied to the upper end of the sliding rod 1, so that the steel wire brush bristles 7 are in good contact with the inner wall of the cofferdam and have a certain pressure; the hammering block 2 is lifted by a crane and freely dropped, and this is repeated many times. During the falling process of the hammering block 2, the steel wire brush bristles 7 brush the inner wall of the cofferdam, and water is poured into the lower right slot of the water passing trough 3. As the width of the water passing trough 3 gradually decreases from the lower right to the upper left, the water flow velocity in the trough gradually increases and finally sprays out from the upper left slot to wash the inner wall of the cofferdam brushed by the cleaning unit; in addition, when the hammering block 2 lands, it will compact the soil.

[0022] After the cleaning is completed, the sliding rod 1 is pulled out and moved to the next section to repeat the above operation until the entire inner circle of the cofferdam is completely cleaned.

[0023] The utility model uses the free fall of the hammering block 2 to complete the compaction of the soil. During the falling process of the hammering block 2, the inner wall of the cofferdam is cleaned by using a steel wire brush, and the inner wall of the cofferdam brushed is washed by squeezing water through the water passing trough 3, so that the inner wall of the cofferdam is effectively brushed; the operation is simple, the practicability is strong, it is convenient to carry, and the reuse rate is high.

Claims

1. An underwater soil-entering steel cofferdam structure cleaning device, characterized in that It includes a sliding rod (1) and a hammering block (2). A sliding hole is provided on the hammering block (2), and the sliding rod (1) is inserted into the sliding hole so that the hammering block (2) can slide axially along the sliding rod (1). A cleaning unit is provided on the left side of the hammering block (2); an inclined water passing groove (3) is formed in the hammering block (2). One end of the water passing groove (3) is opened on the left side wall of the upper left of the hammering block (2) and is located above the cleaning unit, and the other end is opened on the bottom surface of the lower right of the hammering block (2), and the width of the water passing groove (3) gradually decreases from the lower right to the upper left.

2. The underwater soil-entering steel cofferdam structure cleaning device according to claim 1, wherein, The cleaning unit includes a dovetail groove (4) opened on the left side wall of the hammering block (2). The dovetail groove (4) extends in the front-rear direction. A dovetail bar (5) is installed in the dovetail groove (4). The dovetail bar (5) is fixed in the dovetail groove (4) by bolts (6). A wire brush (7) is fixed on the left side of the dovetail bar (5).

3. An underwater soil-entering steel cofferdam structure cleaning device according to claim 1 or 2, characterized in that, Multiple groups of the cleaning units are vertically distributed on the left side of the hammering block (2).

4. An underwater soil-entering steel cofferdam structure cleaning device according to claim 1, characterized in that, A lifting ring (8) is provided on the top of the hammering block (2).

5. An underwater soil-entering steel cofferdam structure cleaning device according to claim 1, characterized in that, Two sliding rods (1) are arranged side by side in the front-rear direction, and the lower ends of the two sliding rods (1) are fixed by a horizontal connecting rod (9).

6. The cleaning device for an underwater soil-entering steel cofferdam structure according to claim 1, wherein, Four fins (10) are provided at the lower end of each sliding rod (1) in the front, rear, left, and right directions.

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