Larsen steel sheet pile cofferdam and construction method thereof

Abstract

The invention discloses a Larsen steel sheet pile cofferdam and a construction method thereof, and belongs to the technical field of steel sheet piles.The Larsen steel sheet pile cofferdam comprises a first digging plate used for digging holes, the first digging plate is horizontally and slidably arranged on a mounting frame, a second digging plate is horizontally and slidably arranged on the mounting frame, and the second digging plate is arranged beside the first digging plate; an adjusting mechanism used for adjusting the distance between the first digging plate and the second digging plate is arranged on the mounting frame, a first sliding groove is formed in the bottom face of the first digging plate, a plurality of first inserting plates are vertically arranged in the first sliding groove in a sliding mode, the first inserting plates are adjacent to one another, and a first adjusting and controlling mechanism used for adjusting and controlling vertical sliding of the first inserting plates is arranged on the first digging plate. A second sliding groove is formed in the bottom face of the second digging plate, a plurality of second inserting plates are vertically arranged in the second sliding groove in a sliding mode, the second inserting plates are adjacent to one another, and a second adjusting and controlling mechanism used for adjusting and controlling the second inserting plates to vertically slide is arranged on the second digging plate. The construction method has the effects that a pit hole suitable for placing the steel sheet pile is conveniently excavated, and the possibility of inclination of the steel sheet pile is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of steel sheet piles, and in particular to a Larsen steel sheet pile cofferdam and a construction method thereof. Background Art

[0002] With the development of urban construction, there are more and more river-related projects, such as bridges, sluices, culverts, and communication, electricity, heat, water supply, and drainage pipelines that cross rivers. Due to the water-flowing characteristics of rivers, these projects require diversion and drainage of rivers during construction.

[0003] In the prior art, traditional cofferdams often go crooked during the process of driving steel sheet piles, so it is necessary to use a digging plate to dig a pit that is suitable for the size of the steel sheet piles in advance, and use a ship crane to lift the steel sheet piles into the pit to ensure that the steel sheet piles do not tilt. This method has certain defects. If the size of the pre-excavated pit is not accurate enough, the steel sheet piles cannot be placed if the pit is too small, and the steel sheet piles will still tilt if the pit is too large. The construction is difficult and the construction accuracy is low.

[0004] In view of the above-mentioned related technologies, it is urgent to design and develop a Larsen steel sheet pile cofferdam and a construction method thereof, so as to facilitate the excavation of pits suitable for the placement of steel sheet piles and reduce the possibility of the steel sheet piles tilting. Summary of the invention

[0005] In order to facilitate the excavation of a hole suitable for placing steel sheet piles and reduce the possibility of the steel sheet piles tilting, the present application provides a Larsen steel sheet pile cofferdam and a construction method thereof.

[0006] In the first aspect, the present application provides a Larsen steel sheet pile cofferdam body adopts the following technical solution: A Larsen steel sheet pile cofferdam body comprises a digging plate 1 for digging holes, wherein the digging plate 1 is horizontally slidably arranged on a mounting frame, a digging plate 2 is horizontally slidably arranged on the mounting frame, the digging plate 2 is arranged next to the digging plate, an adjusting mechanism for adjusting the distance between the digging plate 1 and the digging plate 2 is arranged on the mounting frame, a slide groove 1 is provided on the bottom surface of the digging plate 1, a plurality of plug plates 1 are vertically slidably arranged in the slide groove 1, the plurality of plug plates 1 are arranged adjacent to each other, a first adjusting mechanism for regulating the vertical sliding of the plug plate 1 is provided on the digging plate 1, a slide groove 2 is provided on the bottom surface of the digging plate 2, a plurality of plug plates 2 are vertically slidably arranged in the slide groove 2, the plurality of plug plates 2 are arranged adjacent to each other, and a second adjusting mechanism for regulating the vertical sliding of the plug plates 2 is provided on the digging plate 2.

[0007] By adopting the above technical scheme, the digging plate 1 is horizontally slidably arranged on the mounting frame, the digging plate 2 is horizontally slidably arranged on the mounting frame, the digging plate 2 is arranged beside the digging plate, a sliding groove 1 is provided on the bottom surface of the digging plate 1, and a plurality of plug-in plates 1 are vertically slidably arranged in the sliding groove 1, and the plurality of plug-in plates 1 are arranged adjacent to each other, a sliding groove 2 is provided on the bottom surface of the digging plate 2, and a plurality of plug-in plates 2 are vertically slidably arranged in the sliding groove 2, and the plurality of plug-in plates 2 are arranged adjacent to each other. After determining the size of the pit hole, the number of the required plug-in plates 1 and 2 is inferred according to the length and width of the pit hole, and the first regulating mechanism is used to control A relative number of plug plates 1 are controlled to slide down so that the length of the multiple plug plates 1 connected together matches the width of the pit. A relative number of plug plates 2 are controlled to slide down through the second regulating mechanism so that the length of the multiple plug plates 2 connected together matches the width of the pit. The distance between the digging plate 1 and the digging plate 2 is adjusted through the regulating mechanism so that the distance between the digging plate 1 and the digging plate 2 matches the length of the pit. That is, by adjusting the number of plug plates 1 and 2 and the distance between the digging plate 1 and the digging plate 2, a pit suitable for placing the steel sheet pile can be excavated, thereby reducing the possibility of the steel sheet pile tilting.

[0008] Preferably, a sliding groove is provided on the bottom surface of the mounting frame, the digging plate 1 is slidably arranged in the sliding groove, the digging plate 2 is slidably arranged in the sliding groove, and a sliding groove is provided on the side wall of the sliding groove, and the adjusting mechanism includes a double-headed motor arranged in the sliding groove, a screw 1 fixed on the output shaft of the double-headed motor 1, a screw 2 fixed on the other output shaft of the double-headed motor, a slider 1 threadedly sleeved on the screw 1, and a slider 2 threadedly sleeved on the screw 2, the screw 1 is rotatably arranged in the sliding groove, the screw 2 is rotatably arranged in the sliding, the slider 1 is connected to the digging plate 1, the slider 1 is horizontally slidably arranged in the sliding groove, the slider 2 is connected to the digging plate 2, and the slider 2 is horizontally slidably arranged in the sliding groove.

[0009] By adopting the above technical scheme, a sliding groove is provided on the bottom surface of the mounting frame, digging plate one is slidably arranged in the sliding groove, digging plate two is slidably arranged in the sliding groove, a sliding groove is provided on the side wall of the sliding groove, a double-headed motor is arranged in the sliding groove, a screw rod one is fixed on the output shaft of the double-headed motor one, a screw rod one is rotatably arranged in the sliding groove, a slider one is threadedly sleeved on the screw rod one, a slider one is horizontally slidably arranged in the sliding groove, a slider one is connected with digging plate one, a screw rod two is fixed on the other output shaft of the double-headed motor, a screw rod two is rotatably arranged in the sliding groove, a slider rod two is threadedly sleeved on the screw rod two, a slider two is horizontally slidably arranged in the sliding groove, and a slider two is connected with digging plate two. When it is necessary to adjust the distance between digging plate one and digging plate two, the double-headed motor is driven to drive screw rod one and screw rod two to rotate forward or reversely, thereby driving slider rod one and slider rod two to approach or move away from each other, and then driving digging plate one and digging plate two to approach or move away from each other, so as to facilitate the adjustment of the distance between digging plate one and digging plate two.

[0010] Preferably, the first regulating mechanism includes a mounting bar 1 arranged on the digging plate 1, a motor 1 arranged in the mounting bar 1, and a stud 1 fixed on the output shaft of the motor 1, and the stud 1 is threadedly inserted in the plug plate 1, and the second regulating mechanism includes a mounting bar 2 arranged on the digging plate 2, a motor 2 arranged in the mounting bar 2, and a stud 2 fixed on the output shaft of the motor 2, and the stud 2 is threadedly inserted in the plug plate 2.

[0011] By adopting the above technical scheme, mounting bar 1 is arranged on digging plate 1, motor 1 is arranged in mounting bar 1, stud 1 is fixed on the output shaft of motor 1, stud 1 is threadedly inserted in plug plate 1, mounting bar 2 is arranged on digging plate 2, motor 2 is arranged in mounting bar 2, stud 2 is fixed on the output shaft of motor 2, and stud 2 is threadedly inserted in plug plate 2. When it is necessary to adjust plug plate 1 to slide down or move up, driving motor 1 drives stud 1 to rotate forward or reversely. Under the limiting action of slide groove 1, plug plate 1 slides down or moves up, which is convenient for adjusting the position of plug plate 1. When it is necessary to adjust plug plate 2 to slide down or move up, driving motor 2 drives stud 2 to rotate forward or reversely. Under the limiting action of slide groove 2, plug plate 2 slides down or moves up, which is convenient for adjusting the position of plug plate 2.

[0012] Preferably, a limiting groove 1 is provided on the side wall of the slide groove 1, a limiting block 1 is arranged on the side of the plug plate 1, and the limiting block 1 is vertically slidably arranged in the limiting groove 1, a limiting groove 2 is provided on the side wall of the slide groove 2, a limiting block 2 is arranged on the side of the plug plate 2, and the limiting block 2 is vertically slidably arranged in the limiting groove 2.

[0013] By adopting the above technical scheme, a limiting groove 1 is provided on the side wall of the slide groove 1, a limiting block 1 is arranged on the side of the plug plate 1, and the limiting block 1 is vertically slidably arranged in the limiting groove 1; a limiting groove 2 is provided on the side wall of the slide groove 2, a limiting block 2 is arranged on the side of the plug plate 2, and the limiting block 2 is vertically slidably arranged in the limiting groove 2; the limiting block 1 prevents the plug plate 1 from being separated from the digging plate 1, thereby improving the stability of the connection between the plug plate 1 and the digging plate 1; the limiting block 2 prevents the plug plate 2 from being separated from the digging plate 2, thereby improving the stability of the connection between the plug plate 2 and the digging plate 2.

[0014] Preferably, a positioning mechanism is provided next to the mounting frame, and the positioning mechanism includes a mounting tube provided next to the mounting frame, a turntable rotatably provided on the mounting tube, a cylinder 1 provided in the mounting tube, and a positioning column which can be inserted into the river channel, the mounting frame is slidably provided on the turntable, and the positioning column is fixed on the output shaft of the cylinder 1.

[0015] By adopting the above technical solution, the mounting tube is arranged next to the mounting frame, the turntable is rotatably arranged on the mounting tube, the mounting frame is slidably arranged on the turntable, the cylinder one is arranged in the mounting tube, and the positioning column is fixed on the output shaft of the cylinder one. Before excavating the pit, it is necessary to position the mounting frame first. By driving the cylinder one, the positioning column can be inserted into the river channel, so that the mounting frame can operate stably in the river channel, and then it is convenient to excavate the pit.

[0016] Preferably, the positioning mechanism includes a reinforcement component, which includes a cylinder 2 arranged in the positioning column and a positioning strip that can be inserted in the river channel, the positioning strip is fixed on the output shaft of the cylinder 2, and the positioning strip is slidably arranged in the positioning column.

[0017] By adopting the above technical solution, cylinder two is arranged in the positioning plug column, the positioning plug is fixed on the output shaft of cylinder two, and the positioning plug is slidably arranged in the positioning plug column. When the positioning plug is inserted in the river channel, cylinder two is driven to push the positioning plug to be inserted in the river channel, thereby further improving the stability of the positioning plug column inserted in the river channel, thereby improving the stability of the excavated pit.

[0018] Preferably, a lateral adjustment mechanism is provided on the turntable, and the lateral adjustment mechanism includes a storage bar arranged on the turntable, a motor three arranged in the storage bar, a screw bar one fixed on the output shaft of the motor three, and a sliding block threadedly sleeved on the screw bar one. A transfer groove is provided on the bottom surface of the storage bar, the screw bar one is rotatably arranged in the transfer groove, the sliding block is horizontally slidably arranged in the transfer groove, and the mounting frame is vertically slidably arranged on the sliding block.

[0019] By adopting the above technical solution, the storage bar is arranged on the turntable, the bottom surface of the storage bar is provided with an adapter groove, the motor three is arranged in the storage bar, the screw bar one is fixed on the output shaft of the motor three, the screw bar one is rotatably arranged in the adapter groove, the sliding block is threadedly sleeved on the screw bar one, the sliding block is horizontally slidably arranged in the adapter groove, and the mounting frame is vertically slidably arranged on the sliding block. When it is necessary to adjust the distance between the mounting frame and the positioning plug column, the driving motor three drives the screw bar one to rotate forward or reversely. Under the limiting action of the adapter groove, the sliding block slides in the direction close to or away from the positioning plug column, thereby facilitating the adjustment of the distance between the mounting frame and the positioning plug column. Preferably, a vertical adjustment mechanism is provided on the sliding block, and the vertical adjustment mechanism includes a connecting strip arranged on the sliding block, a motor four arranged in the connecting strip, a screw bar two fixed on the output shaft of the motor four, and a vertical bar threadedly sleeved on the screw bar two, a placement groove is opened on the bottom surface of the connecting strip, the screw bar two is rotatably arranged in the placement groove, the vertical bar is vertically slidably arranged in the placement groove, and the mounting frame is fixed on the bottom surface of the vertical bar.

[0020] By adopting the above technical scheme, the connecting strip is arranged on the sliding block, a placement groove is opened on the bottom surface of the connecting strip, the motor four is arranged in the connecting strip, the screw bar two is fixed on the output shaft of the motor four, the screw bar two is rotatably arranged in the placement groove, the vertical bar is threadedly sleeved on the screw bar two, the vertical bar is vertically slidably arranged in the placement groove, and the mounting frame is fixed on the bottom surface of the vertical bar. When the height of the mounting frame needs to be adjusted, the driving motor four drives the screw bar two to rotate forward or reversely. Under the limiting action of the placement groove, the vertical bar moves up or down in the connecting strip, thereby facilitating the adjustment of the position of the mounting frame.

[0021] Preferably, a connecting ring is provided on the top surface of the mounting tube, a limiting ring block is provided on the connecting ring, an adapter ring groove is provided on the bottom surface of the turntable, a limiting ring groove is provided on the side wall of the adapter ring groove, the connecting ring is rotatably arranged in the adapter ring groove, the limiting ring block is rotatably arranged in the limiting ring groove, an installation box is provided on the top surface of the turntable, a motor five is provided in the installation box, and the turntable is fixed on the output shaft of the motor five.

[0022] By adopting the above technical scheme, a connecting ring is arranged on the top surface of the mounting tube, a limiting ring block is arranged on the connecting ring, an adaptor ring groove is arranged on the bottom surface of the turntable, a limiting ring groove is arranged on the side wall of the adaptor ring groove, the connecting ring is rotatably arranged in the adaptor ring groove, the limiting ring block is rotatably arranged in the limiting ring groove, an installation box is arranged on the top surface of the turntable, a motor five is arranged in the installation box, the turntable is fixed on the output shaft of the motor five, when the digging plate one, the digging plate two, the plug plate one and the plug plate two complete the excavation of a pit at a certain position, the driving motor five drives the turntable to rotate, and the turntable can drive the mounting frame to rotate, so as to continue to excavate a pit at another location.

[0023] In a second aspect, the present application provides a Larsen steel sheet pile cofferdam construction method, which adopts the following technical solution: A Larsen steel sheet pile cofferdam construction method comprises the following steps: S1, positioning turntable, before digging the pit, by driving cylinder 1, the positioning plug can be inserted into the river channel, and driving cylinder 2 can push the positioning plug to be inserted into the river channel to determine the position of the turntable; S2, positioning the mounting frame, driving motor 5 drives the turntable to rotate, driving motor 3 drives the sliding block to slide towards or away from the positioning plug column, and driving motor 4 drives the vertical bar to move up or down in the connecting bar, thereby determining the position of the mounting frame; S3, digging a hole, controlling a relative number of plug plates 1 to slide down through the motor 1 mechanism, so that the length of multiple plug plates 1 connected together matches the width of the hole, controlling a relative number of plug plates 2 to slide down through the motor 1, so that the length of multiple plug plates 2 connected together matches the width of the hole, adjusting the distance between digging plate 1 and digging plate 2 through the adjustment mechanism, so that the distance between digging plate 1 and digging plate 2 matches the length of the hole, and digging a hole suitable for placing steel sheet piles by adjusting the number of plug plates 1 and 2 and the distance between them.

[0024] By adopting the above technical solution, the positioning plug column can be inserted into the river channel by driving cylinder 1, the positioning plug bar can be inserted into the river channel by driving cylinder 2 to determine the position of the turntable, the turntable can be rotated by driving motor 5, the sliding block can be driven by driving motor 3 to slide in the direction close to or away from the positioning plug column, and the vertical bar can be driven by driving motor 4 to move up or down in the connecting bar, so as to determine the position of the mounting frame, and the relative number of plug plates can be controlled to slide down by motor 1, so that the length of the multiple plug plates connected together matches the width of the pit, and the relative number of plug plates can be controlled by motor 1 The plug plate two slides down so that the length of the multiple plug plates two connected together matches the width of the pit. The distance between the digging plate one and the digging plate two is adjusted through the adjustment mechanism so that the distance between the digging plate one and the digging plate two matches the length of the pit. By adjusting the number of the plug plates one and the plug plates two and the distance between the digging plates one and the digging plates two, a pit suitable for placing the steel sheet pile is excavated. When the digging plates one, the digging plates two, the plug plates one and the plug plates two complete the excavation of a pit at a certain position, the driving motor five drives the turntable to rotate, and the turntable can drive the mounting frame to rotate, so as to continue to excavate another pit.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. A digging plate 1 is horizontally slidably arranged on a mounting frame, a digging plate 2 is horizontally slidably arranged on a mounting frame, and a digging plate 2 is arranged beside a digging plate. A sliding groove 1 is provided on the bottom surface of the digging plate 1, and a plurality of plug plates 1 are vertically slidably arranged in the sliding groove 1, and the plurality of plug plates 1 are arranged adjacent to each other. A sliding groove 2 is provided on the bottom surface of the digging plate 2, and a plurality of plug plates 2 are vertically slidably arranged in the sliding groove 2, and the plurality of plug plates 2 are arranged adjacent to each other. After determining the size of the pit hole, the number of the required plug plates 1 and 2 is inferred according to the length and width of the pit hole, and the relative number is controlled by a first regulating mechanism. A certain number of plug plates 1 slide down so that the length of the connected multiple plug plates 1 matches the width of the pit hole. A relative number of plug plates 2 are controlled to slide down by the second regulating mechanism so that the length of the connected multiple plug plates 2 matches the width of the pit hole. The distance between the digging plate 1 and the digging plate 2 is adjusted by the regulating mechanism so that the distance between the digging plate 1 and the digging plate 2 matches the length of the pit hole. That is, by adjusting the number of plug plates 1 and the plug plates 2 and the distance between the digging plate 1 and the digging plate 2, a pit hole suitable for placing the steel sheet pile can be excavated, thereby reducing the possibility of the steel sheet pile tilting. 2. A sliding groove is provided on the bottom surface of the mounting frame, and the digging plate 1 is slidably arranged in the sliding groove, and the digging plate 2 is slidably arranged in the sliding groove. A sliding groove is provided on the side wall of the sliding groove, and the double-headed motor is arranged in the sliding groove. The screw rod 1 is fixed on the output shaft of the double-headed motor 1, and the screw rod 1 is rotatably arranged in the sliding groove. The slider 1 is threadedly sleeved on the screw rod 1, and the slider 1 is horizontally slidably arranged in the sliding groove. The slider 1 is connected with the digging plate 1, and the screw rod 2 is fixed on the other output shaft of the double-headed motor. The screw rod 2 is rotatably arranged in the sliding groove, and the slider rod 2 is threadedly sleeved on the screw rod 2. The slider 2 is horizontally slidably arranged in the sliding groove, and the slider 2 is connected with the digging plate 2. When it is necessary to adjust the distance between the digging plate 1 and the digging plate 2, the double-headed motor is driven to drive the screw rod 1 and the screw rod 2 to rotate forward or reversely, thereby driving the slider 1 and the slider rod 2 to move closer to or away from each other, and then driving the digging plate 1 and the digging plate 2 to move closer to or away from each other, so as to facilitate the adjustment of the distance between the digging plate 1 and the digging plate 2; 3. Cylinder two is set in the positioning plug column, the positioning plug is fixed on the output shaft of cylinder two, and the positioning plug is slidably set in the positioning plug column. When the positioning plug is inserted in the river channel, cylinder two is driven to push the positioning plug to be inserted in the river channel, thereby further improving the stability of the positioning plug column inserted in the river channel, thereby improving the stability of the excavated pit. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the Larsen steel sheet pile cofferdam construction body in the embodiment of the present application.

[0027] Figure 2 It is a structural schematic diagram of the adjustment mechanism in the embodiment of the present application.

[0028] Figure 3 It is a schematic diagram of the internal structure of digging plate 1 and digging plate 2 in the embodiment of the present application.

[0029] Figure 4 It is a schematic diagram of the internal structure of the turntable in the embodiment of the present application.

[0030] Figure 5 It is a schematic diagram of the internal structure of the mounting frame in the embodiment of the present application.

[0031] Figure 6 It is a schematic diagram of the internal structure of the storage bar in the embodiment of the present application.

[0032] Figure 7 It is a schematic diagram of the internal structure of the connecting strip in the embodiment of the present application.

[0033] Description of reference numerals: 1. Mounting frame; 11. Sliding groove; 12. Sliding groove; 2. Digging plate 1; 21. Sliding groove 1; 211. Limiting groove 1; 22. Inserting plate 1; 221. Limiting block 1; 3. Digging plate 2; 31. Sliding groove 2; 311. Limiting groove 2; 32. Inserting plate 2; 321. Limiting block 2; 4. Adjustment mechanism; 41. Double-headed motor; 42. Screw 1; 43. Screw 2; 44. Sliding block 1; 45. Sliding block 2; 5. First regulating mechanism; 51. Mounting strip 1; 52. Motor 1; 53. Stud 1; 6. Second regulating mechanism; 61. Mounting strip 2; 6 2. Motor 2; 63. Stud 2; 7. Positioning mechanism; 71. Mounting tube; 711. Connecting ring; 712. Limiting ring block; 72. Turntable; 721. Adapter ring groove; 722. Limiting ring groove; 73. Cylinder 1; 74. Positioning plug column; 75. Reinforcement assembly; 751. Positioning plug strip; 8. Horizontal control mechanism; 81. Storage strip; 811. Adapter groove; 82. Motor 3; 83. Screw bar 1; 84. Sliding block; 9. Vertical control mechanism; 91. Connecting strip; 911. Storage groove; 92. Motor 4; 93. Screw bar 2; 94. Vertical strip. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-7 This application is described in further detail.

[0035] The present application embodiment discloses a Larsen steel sheet pile cofferdam construction body. Figure 1 , Figure 2 and Figure 3 As shown, a Larsen steel sheet pile cofferdam body includes a mounting frame 1, a digging plate 1 2, a digging plate 2 3, an adjusting mechanism 4, a first regulating mechanism 5, a second regulating mechanism 6, a positioning mechanism 7, a lateral regulating mechanism 8 and a vertical regulating mechanism 9.

[0036] Reference Figure 1 and Figure 4 As shown, the mounting frame 1 is horizontally arranged, a sliding groove 11 is opened on the bottom surface of the mounting frame 1, a sliding groove 12 is opened on the side wall of the sliding groove 11, there are two sliding grooves 12, and the two sliding grooves 12 are symmetrical about the sliding groove 11, the digging plate 1 2 is slidably arranged in the sliding groove 11, and the digging plate 2 3 is slidably arranged in the sliding groove 11.

[0037] Reference Figure 1 and Figure 2 As shown, there are two groups of adjustment mechanisms 4, and the adjustment mechanisms 4 correspond to the sliding grooves 12 one by one. The adjustment mechanisms 4 include a double-headed motor 41, a screw rod 1 42, a screw rod 2 43, a slider 1 44 and a slider 2 45. The double-headed motor 41 is arranged in the sliding groove 12, the screw rod 1 42 is fixed on an output shaft of the double-headed motor 41, the screw rod 2 43 is fixed on another output shaft of the double-headed motor 41, the screw rod 1 42 is rotatably arranged in the sliding groove 12, and the screw rod 2 43 is rotatably arranged in the sliding groove.

[0038] Reference Figure 2 and Figure 4 As shown, slider 1 44 is threadedly sleeved on screw 1 42, slider 1 44 is horizontally slidably set in the sliding groove 12, slider 1 44 is connected to digging plate 1 2, slider 2 45 is threadedly sleeved on screw 2 43, slider 2 45 is horizontally slidably set in the sliding groove 12, and slider 2 45 is connected to digging plate 2 3.

[0039] Reference Figure 2 and Figure 3 As shown, a slide groove 21 is provided on the bottom surface of the digging plate 2, and a plug plate 22 is vertically slidably arranged in the slide groove 21. There are four plug plates 22, and the four plug plates 22 are arranged adjacent to each other. The first regulating mechanism 5 includes a mounting strip 51, a motor 52 and a stud 53. There are four motors 52 and four studs 53. The studs 53 correspond to the motors 52 one by one, and the studs 53 are fixed on the output shaft of the motor 52. The studs 53 correspond to the plug plates 22 one by one, and the studs 53 are threadedly inserted in the plug plates 22.

[0040] Reference Figure 2 and Figure 3 As shown, a slide groove 21 is provided on the bottom surface of the digging plate 23, and a plug plate 22 is vertically slidably arranged in the slide groove 21. There are four plug plates 232, and the four plug plates 232 are arranged adjacent to each other. The second regulating mechanism 6 includes a mounting strip 21, a motor 262 and a stud 263. There are four motors 62, and there are four studs 63. The studs 263 correspond to the motors 262 one by one, and the studs 263 are fixed on the output shaft of the motor 262. The studs 263 correspond to the plug plates 263 one by one, and the studs 263 are threadedly inserted in the plug plates 263.

[0041] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a relative number of plug plates 22 are controlled to slide down by a motor 52, so that the length of multiple plug plates 22 connected together matches the width of the pit. A relative number of plug plates 32 are controlled to slide down by a motor 52, so that the length of multiple plug plates 32 connected together matches the width of the pit. The distance between digging plate 2 and digging plate 2 3 is adjusted by an adjusting mechanism 4, so that the distance between digging plate 2 and digging plate 2 3 matches the length of the pit. By adjusting the number of plug plates 22 and plug plates 32 and the distance between digging plates 2 and digging plates 3, a pit suitable for placing steel sheet piles is excavated.

[0042] Reference Figure 1 and Figure 3As shown, a limiting groove 211 is provided on the side wall of the slide groove 21, and there are two limiting grooves 211, which are symmetrical about the plug board 22. A limiting block 221 is provided on the side of the plug board 22, and there are two limiting blocks 221, which are symmetrical about the plug board 22. The limiting blocks 221 correspond to the limiting grooves 211 one by one, and the limiting blocks 221 are vertically slidably arranged in the limiting grooves 211.

[0043] Reference Figure 1 and Figure 3 As shown, a limiting groove 311 is provided on the side wall of the second slide groove 31, and there are two limiting grooves 311, which are symmetrical about the second plug board 32. A limiting block 321 is provided on the side of the second plug board 32, and there are two limiting blocks 321, which are symmetrical about the second plug board 32. The limiting blocks 321 correspond to the limiting grooves 311 one by one, and the limiting blocks 321 are vertically slidably arranged in the limiting grooves 311.

[0044] Reference Figure 1 and Figure 3 As shown, the limit block 221 prevents the plug plate 22 from being separated from the digging plate 2, thereby improving the stability of the connection between the plug plate 22 and the digging plate 2, and the limit block 321 prevents the plug plate 32 from being separated from the digging plate 3, thereby improving the stability of the connection between the plug plate 32 and the digging plate 3.

[0045] Reference Figure 1 and Figure 5 As shown, the positioning mechanism 7 includes a mounting tube 71, a turntable 72, a cylinder 73, a positioning column 74 and a reinforcement component 75. The mounting tube 71 is arranged beside the mounting frame 1, the turntable 72 is rotatably arranged on the mounting tube 71, the mounting frame 1 is slidably arranged on the turntable 72, the cylinder 73 is arranged in the mounting tube 71, and the positioning column 74 is fixed on the output shaft of the cylinder 73. Before excavating a hole, it is necessary to position the mounting frame 1 first. By driving the cylinder 73, the positioning column 74 can be inserted into the river channel, so that the mounting frame 1 can run stably in the river channel, and then it is convenient to excavate the hole.

[0046] Reference Figure 1 and Figure 5As shown, the positioning mechanism 7 includes a mounting tube 71, a turntable 72, a cylinder 1 73, a positioning plug 74 and a reinforcement group. There are 4 groups of reinforcement components 75, and the 4 groups of reinforcement components 75 are evenly distributed along the circumferential side of the positioning plug 74. The reinforcement component 75 includes a cylinder 2 and a positioning plug 751. The cylinder 2 is arranged in the positioning plug 74, and the positioning plug 751 is fixed on the output shaft of the cylinder 2. The positioning plug 751 is slidably arranged in the positioning plug 74. When the positioning plug is inserted in the river channel, the cylinder 2 is driven to push the positioning plug 751 to be inserted in the river channel, so as to further improve the stability of the positioning plug 74 inserted in the river channel, thereby improving the stability of the excavated pit.

[0047] Reference Figure 1 and Figure 6 As shown, the lateral regulating mechanism 8 includes a storage bar 81, a motor 3 82, a screw bar 1 83 and a sliding block 84. The storage bar 81 is arranged on the turntable 72. A transfer groove 811 is opened on the bottom surface of the storage bar 81. The motor 3 82 is arranged in the storage bar 81. The screw bar 1 83 is fixed on the output shaft of the motor 3 82. The screw bar 1 83 is rotatably arranged in the transfer groove 811. The sliding block 84 is threadedly sleeved on the screw bar 1 83. The sliding block 84 is horizontally slidably arranged in the transfer groove 811. The mounting frame 1 is vertically slidably arranged on the sliding block 84.

[0048] Reference Figure 1 and Figure 6 As shown, when the distance between the mounting frame 1 and the positioning plug 74 needs to be adjusted, the drive motor 3 82 drives the screw 1 83 to rotate forward or reversely, and under the limiting effect of the adapter groove 811, the sliding block 84 slides toward or away from the positioning plug 74, thereby facilitating the adjustment of the distance between the mounting frame 1 and the positioning plug 74. Reference Figure 1 and Figure 7 As shown, the vertical regulating mechanism 9 includes a connecting bar 91, a motor 92, a screw bar 93 and a vertical bar 94. The connecting bar 91 is arranged on the sliding block 84. A placement groove 911 is opened on the bottom surface of the connecting bar 91. The motor 92 is arranged in the connecting bar 91. The screw bar 93 is fixed on the output shaft of the motor 92. The screw bar 93 is rotatably arranged in the placement groove 911. The vertical bar 94 is threadedly sleeved on the screw bar 93. The vertical bar 94 is vertically slidably arranged in the placement groove 911. The mounting frame 1 is fixed on the bottom surface of the vertical bar 94.

[0049] Reference Figure 1 and Figure 7 As shown, when the height of the mounting frame 1 needs to be adjusted, the driving motor 4 92 drives the screw 2 43 to rotate forward or reversely. Under the limiting action of the placement groove 911, the vertical bar 94 moves up or down in the connecting bar 91, thereby facilitating the adjustment of the position of the mounting frame 1.

[0050] Reference Figure 1and Figure 5 As shown, a connecting ring 711 is arranged on the top surface of the mounting tube 71, a limiting ring block 712 is arranged on the connecting ring 711, an adaptor ring groove 721 is provided on the bottom surface of the turntable 72, a limiting ring groove 722 is provided on the side wall of the adaptor ring groove 721, the connecting ring 711 is rotatably arranged in the adaptor ring groove 721, the limiting ring block 712 is rotatably arranged in the limiting ring groove 722, an installation box is arranged on the top surface of the turntable 72, a motor five is arranged in the installation box, and the turntable 72 is fixed on the output shaft of the motor five.

[0051] Reference Figure 1 and Figure 5 As shown, after digging plate 1 2, digging plate 2 3, plugging plate 1 22 and plugging plate 2 32 complete the excavation of a hole at a certain location, the driving motor 5 drives the turntable 72 to rotate, and the turntable 72 can drive the mounting frame 1 to rotate, so as to continue to excavate another hole.

[0052] The implementation principle of the Larsen steel sheet pile cofferdam construction body in the embodiment of the present application is: By driving cylinder 1 73, the positioning plug 74 can be inserted into the river channel, driving cylinder 2 pushes the positioning plug 751 to be inserted into the river channel to determine the position of the turntable 72, driving motor 5 drives the turntable 72 to rotate, driving motor 3 82 drives the sliding block 84 to slide in the direction close to or away from the positioning plug 74, and driving motor 4 92 drives the vertical bar 94 to move up or down in the connecting bar 91, so as to determine the position of the mounting frame 1, and the relative number of plug plates 22 are controlled to slide down by motor 1 52, so that the length of multiple plug plates 22 connected together meets the width of the pit, and the relative number of plug plates 2 are controlled by motor 1 52 32 slides down so that the length of the multiple plug plates 2 32 connected together matches the width of the pit. The distance between the digging plates 1 2 and the digging plates 2 3 is adjusted through the adjusting mechanism 4 so that the distance between the digging plates 1 2 and the digging plates 2 3 matches the length of the pit. By adjusting the number of the plug plates 1 22 and the plug plates 2 32 and the distance between the digging plates 1 2 and the digging plates 2 3, a pit suitable for placing the steel sheet piles is excavated. After the digging plates 1 2, the digging plates 2 3, the plug plates 1 22 and the plug plates 2 32 complete the excavation of a pit at a certain position, the driving motor 5 drives the turntable 72 to rotate, and the turntable 72 can drive the mounting frame 1 to rotate, so as to continue to excavate another pit.

[0053] The present application also discloses a Larsen steel sheet pile cofferdam construction method, comprising the following steps: S1, positioning the turntable 72. Before digging the pit, the positioning plug 74 can be inserted into the river channel by driving the cylinder 1 73, and the positioning plug 751 can be pushed into the river channel by driving the cylinder 2 to determine the position of the turntable 72; S2, positioning the mounting frame 1, the driving motor 5 drives the turntable 72 to rotate, the driving motor 3 82 drives the sliding block 84 to slide towards or away from the positioning plug 74, and the driving motor 4 92 drives the vertical bar 94 to move up or down in the connecting bar 91, thereby determining the position of the mounting frame 1; S3, digging a hole, controlling a relative number of plug plates 22 to slide down through the motor 52, so that the length of multiple plug plates 22 connected together matches the width of the hole, controlling a relative number of plug plates 32 to slide down through the motor 52, so that the length of multiple plug plates 32 connected together matches the width of the hole, adjusting the distance between digging plate 1 2 and digging plate 2 3 through the adjustment mechanism 4, so that the distance between digging plate 1 2 and digging plate 2 3 matches the length of the hole, and digging a hole suitable for placing steel sheet piles by adjusting the number of plug plates 22 and plug plates 2 32 and the distance between digging plates 1 2 and digging plates 2 3.

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A Larsen steel sheet pile cofferdam body, comprising a digging plate (2) for digging a pit, characterized in that: The digging plate 1 (2) is horizontally slidably arranged on the mounting frame (1), and a digging plate 2 (3) is horizontally slidably arranged on the mounting frame (1). The digging plate 2 (3) is arranged beside the digging plate 1 (2). The mounting frame (1) is provided with an adjustment mechanism (4) for adjusting the distance between the digging plate 1 (2) and the digging plate 2 (3). A sliding groove 1 (21) is provided on the bottom surface of the digging plate 1 (2), and a plurality of plug plates 1 (22) are vertically slidably arranged in the sliding groove 1 (21). The plug plates (22) are arranged adjacent to each other, the digging plate (2) is provided with a first regulating mechanism (5) for regulating the vertical sliding of the plug plates (22), a sliding groove (31) is provided on the bottom surface of the digging plate (3), a plurality of plug plates (32) are arranged vertically in the sliding groove (31), the plurality of plug plates (32) are arranged adjacent to each other, and the digging plate (3) is provided with a second regulating mechanism (6) for regulating the vertical sliding of the plug plates (32).

2. A Larsen steel sheet pile cofferdam body according to claim 1, characterized in that: A sliding groove (11) is provided on the bottom surface of the mounting frame (1), the digging plate 1 (2) is slidably arranged in the sliding groove (11), the digging plate 2 (3) is slidably arranged in the sliding groove (11), a sliding groove (12) is provided on the side wall of the sliding groove (11), and the adjusting mechanism (4) comprises a double-headed motor (41) arranged in the sliding groove (12), a screw rod 1 (42) fixed on one output shaft of the double-headed motor (41), a screw rod 2 (43) fixed on the other output shaft of the double-headed motor (41), and a threaded sleeve. A slider 1 (44) is arranged on the screw rod 1 (42) and a slider 2 (45) is threadedly sleeved on the screw rod 2 (43), the screw rod 1 (42) is rotatably arranged in the sliding groove (12), the screw rod 2 (43) is rotatably arranged in the sliding groove, the slider 1 (44) is connected to the digging plate 1 (2), the slider 1 (44) is horizontally slidably arranged in the sliding groove (12), the slider 2 (45) is connected to the digging plate 2 (3), and the slider 2 (45) is horizontally slidably arranged in the sliding groove (12).

3. The Larsen steel sheet pile cofferdam body according to claim 1, characterized in that: The first regulating mechanism (5) comprises a mounting strip (51) arranged on the digging plate (2), a motor (52) arranged in the mounting strip (51) and a stud (53) fixed on the output shaft of the motor (52), wherein the stud (53) is threadedly inserted in the plug plate (22), and the second regulating mechanism (6) comprises a mounting strip (61) arranged on the digging plate (3), a motor (62) arranged in the mounting strip (61) and a stud (63) fixed on the output shaft of the motor (62), wherein the stud (63) is threadedly inserted in the plug plate (32).

4. A Larsen steel sheet pile cofferdam body according to claim 3, characterized in that: A limiting groove (211) is provided on the side wall of the first slide groove (21), a limiting block (221) is provided on the side of the first plug plate (22), and the limiting block (221) is vertically slidably arranged in the first limiting groove (211), a limiting groove (311) is provided on the side wall of the second slide groove (31), a limiting block (321) is provided on the side of the second plug plate (32), and the limiting block (321) is vertically slidably arranged in the second limiting groove (311).

5. The Larsen steel sheet pile cofferdam body according to claim 1, characterized in that: A positioning mechanism (7) is arranged next to the mounting frame (1), and the positioning mechanism (7) comprises a mounting tube (71) arranged next to the mounting frame (1), a turntable (72) rotatably arranged on the mounting tube (71), a cylinder (73) arranged in the mounting tube (71), and a positioning column (74) which can be inserted in the river channel, the mounting frame (1) is slidably arranged on the turntable (72), and the positioning column (74) is fixed on the output shaft of the cylinder (73).

6. A Larsen steel sheet pile cofferdam body according to claim 5, characterized in that: The positioning mechanism (7) comprises a reinforcement component (75), the reinforcement component (75) comprising a second cylinder arranged in the positioning plug column (74) and a positioning plug strip (751) which can be inserted in the river channel, the positioning plug strip (751) being fixed on the output shaft of the second cylinder, and the positioning plug strip (751) being slidably arranged in the positioning plug column (74).

7. The Larsen steel sheet pile cofferdam body according to claim 5, characterized in that: The turntable (72) is provided with a lateral regulating mechanism (8), the lateral regulating mechanism (8) comprising a storage bar (81) arranged on the turntable (72), a motor three (82) arranged in the storage bar (81), a screw bar one (83) fixed on the output shaft of the motor three (82), and a sliding block (84) threadedly sleeved on the screw bar one (83), a transfer groove (811) is opened on the bottom surface of the storage bar (81), the screw rod one (42) is rotatably arranged in the transfer groove (811), the sliding block (84) is horizontally slidably arranged in the transfer groove (811), and the mounting frame (1) is vertically slidably arranged on the sliding block (84).

8. The Larsen steel sheet pile cofferdam body according to claim 7, characterized in that: The sliding block (84) is provided with a vertical regulating mechanism (9), and the vertical regulating mechanism (9) comprises a connecting strip (91) arranged on the sliding block (84), a motor four (92) arranged in the connecting strip (91), a screw bar two (93) fixed on the output shaft of the motor four (92), and a vertical bar (94) threadedly sleeved on the screw bar two (93), a placement groove (911) is opened on the bottom surface of the connecting strip (91), the screw bar two (93) is rotatably arranged in the placement groove (911), the vertical bar (94) is vertically slidably arranged in the placement groove (911), and the mounting frame (1) is fixed on the bottom surface of the vertical bar (94).

9. A Larsen steel sheet pile cofferdam body according to claim 8, characterized in that: A connecting ring (711) is arranged on the top surface of the mounting tube (71), and a limiting ring block (712) is arranged on the connecting ring (711). An adaptor ring groove (721) is arranged on the bottom surface of the rotating disk (72), and a limiting ring groove (722) is arranged on the side wall of the adaptor ring groove (721). The connecting ring (711) is rotatably arranged in the adaptor ring groove (721), and the limiting ring block (712) is rotatably arranged in the limiting ring groove (722). An installation box is arranged on the top surface of the rotating disk (72), and a motor five is arranged in the installation box. The rotating disk (72) is fixed on the output shaft of the motor five.

10. A Larsen steel sheet pile cofferdam construction method, according to a Larsen steel sheet pile cofferdam body according to any one of claims 1 to 9, characterized in that: The steps include: S1, positioning the turntable (72), before digging the pit, by driving the cylinder 1 (73), the positioning plug (74) can be inserted into the river channel, and the driving cylinder 2 pushes the positioning plug (751) to be inserted into the river channel to determine the position of the turntable (72); S2, positioning the mounting frame (1), driving motor five drives the turntable (72) to rotate, driving motor three (82) drives the sliding block (84) to slide in a direction close to or away from the positioning plug column (74), and driving motor four (92) drives the vertical bar (94) to move up or down in the connecting bar (91), thereby determining the position of the mounting frame (1); S3, excavating a hole, controlling a relative number of plug plates (22) to slide down by means of a motor (52), so that the length of the plurality of plug plates (22) connected together matches the width of the hole, controlling a relative number of plug plates (32) to slide down by means of a motor (52), so that the length of the plurality of plug plates (32) connected together matches the width of the hole, adjusting the distance between the digging plate (2) and the digging plate (3) by means of an adjusting mechanism (4), so that the distance between the digging plate (2) and the digging plate (3) matches the length of the hole, and excavating a hole suitable for placing a steel sheet pile by adjusting the number of the plug plates (22) and the plug plates (32) and the distance between the digging plates (2) and the digging plates (3).

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