Cofferdam supporting structure for water conservancy and hydropower construction

Abstract

A water conservancy and hydropower construction cofferdam supporting structure comprises a steel plate cofferdam defined by a plurality of steel plate piles, the steel plate cofferdam prevents external water from entering the steel plate cofferdam, a supporting beam is erected on the steel plate piles, a supporting plate is arranged on the supporting beam, a positioning frame is arranged on the supporting plate, the positioning frame is slidably connected with a pushing mechanism, and the pushing mechanism is pushed by a driving mechanism. The propelling mechanism is connected with an inner supporting mechanism, and the inner supporting mechanism is attached to the inner wall of the steel plate cofferdam. By extending an upper hydraulic rod and contracting a lower hydraulic rod, a pushing conical block moves downwards, a pushing rod is further made to move forwards, the pushing rod pushes a supporting arm to move and extrude an inner supporting plate, the inner supporting plate supports the interior of the steel plate cofferdam, and the upper hydraulic rod and a convex part control a set of inner supporting mechanisms on opposite faces; the lower hydraulic rod and the concave part control the inner supporting mechanism of the other opposite face, and the inner supporting mechanism is divided into two sets so that proper thrust can be conveniently provided for the steel sheet piles on the opposite face according to the actual situation.

Description

Technical Field

[0001] The utility model relates to the technical field of cofferdam support, and more specifically, to a cofferdam support structure for water conservancy and hydropower construction. Background Technique

[0002] The steel sheet pile cofferdam is one of the most commonly used sheet pile cofferdams. Cofferdams are commonly used in water conservancy project construction to prevent water and soil from entering the construction location of a building, so as to drain water inside the cofferdam, excavate the foundation pit, and build the building. It is usually used in hydraulic structures, and a support structure is required in the cofferdam to support the inside of the cofferdam.

[0003] The existing cofferdam support cannot adjust the thrust anymore after the support is completed. When the length of the support rod is insufficient, it takes a large amount of manpower and material resources to make adjustments, and the modification cost is too high. Content of the Utility Model

[0004] The utility model aims to provide a cofferdam support structure for water conservancy and hydropower construction, which can quickly adjust the length of the support rod and then adjust the pressure of the support rod to overcome the above-mentioned situation.

[0005] A cofferdam support structure for water conservancy and hydropower construction includes a steel sheet cofferdam surrounded by a number of steel sheet piles. A support beam is erected on the steel sheet piles, a support plate is arranged on the support beam, a positioning frame is arranged on the support plate, a propulsion mechanism is slidably connected to the positioning frame, the propulsion mechanism is pushed by a driving mechanism, the propulsion mechanism is connected to an inner support mechanism, and the inner support mechanism is attached to the inner wall of the steel sheet cofferdam.

[0006] Further, a connecting hook is fixedly connected to the inner wall of the steel sheet pile. The support beam includes an inner ring and an outer ring. The outer ring is erected on the connecting hook, and the inner ring is integrally cross-shaped.

[0007] Further, the support plate is laid on the inner ring. The support plate includes an edge plate and a core plate, and the edge plate is arranged around the core plate.

[0008] Further, a ladder is detachably connected to the edge plate.

[0009] Further, the propulsion mechanism includes a concave part, a convex part and a propulsion cone block. The outer side of the propulsion cone block is an inclined surface, and the outer side of the propulsion cone block inclines from outside to inside. The propulsion cone blocks are arranged on both sides of the concave part and the convex part, and the concave part is arranged below the convex part.

[0010] Further, the bottom of the positioning frame is four columns, the top of the positioning frame is a rectangular frame, slideways are arranged on the columns, and sliders are arranged on both side walls of the propulsion cone block, and the sliders slide in the slideways.

[0011] Further, the driving mechanism includes an upper hydraulic rod and a lower hydraulic rod. The top of the upper hydraulic rod is fixedly connected to the top of the rectangular frame. The telescopic end of the upper hydraulic rod is fixedly connected to the convex part. The lower hydraulic rod is arranged on the top surface of the core plate, and the telescopic end of the lower hydraulic rod is fixedly connected to the concave part.

[0012] Further, the inner support mechanism includes a push rod, a support arm and an inner support plate. The inner support plate is arranged on the inner wall of the steel sheet pile cofferdam. One end of the support arm is attached to the inner support plate, the other end of the support arm is slidably connected to one end of the push rod, and the other end of the push rod is slidably connected to the push cone.

[0013] Further, support rings are arranged on the edge plate and the core plate. The push rod is slidably connected to the support ring, and support columns are also arranged on the edge plate. The support arm is slidably connected to the support column.

[0014] Further, inclined braces are arranged at the ends of two adjacent inner support plates.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] ① By extending the upper hydraulic rod and retracting the lower hydraulic rod, the push cone moves downward, further causing the push rod to move forward. The push rod pushes the support arm to move and squeeze the inner support plate. The inner support plate supports the inside of the steel sheet pile cofferdam to prevent the steel sheet pile cofferdam from tilting inward due to excessive external water pressure. The upper hydraulic rod and the convex part control the inner support mechanism of one set of opposite sides, and the lower hydraulic rod and the concave part control the inner support mechanism of the other set of opposite sides. Dividing them into two groups is convenient for providing appropriate thrust to the steel sheet piles on the opposite sides according to the actual situation. After the steel sheet pile cofferdam tilts, the distance and pressure of the inner support mechanism can be adjusted by the telescoping of the upper hydraulic rod or the lower hydraulic rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0018] Figure 1 is an overall structural schematic diagram of a support structure for a water conservancy and hydropower construction cofferdam.

[0019] Figure 2 is a schematic diagram of a support beam in a support structure for a water conservancy and hydropower construction cofferdam

[0020] Figure 3 is a schematic diagram of a propulsion mechanism in a support structure for a water conservancy and hydropower construction cofferdam.

[0021] Figure 4It is a schematic diagram of a positioning frame and a driving mechanism in a cofferdam support structure for water conservancy and hydropower construction.

[0022] In the figure: 1, steel sheet pile; 11, connecting hook; 2, support beam; 21, inner ring; 22, outer ring; 3, support plate; 31, edge plate; 311, ladder; 32, core plate; 4, propulsion mechanism; 41, concave part; 42, convex part; 43, propulsion cone; 431, slider; 5, positioning frame; 51, pillar; 511, slideway; 52, rectangular frame; 6, driving mechanism; 61, upper hydraulic rod; 62, lower hydraulic rod; 7, inner support mechanism; 71, propulsion rod; 711, support ring; 72, support arm; 721, support column; 73, inner support plate; 8, diagonal brace. Specific implementation manner

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] As Figure 1 shown, a cofferdam support structure for water conservancy and hydropower construction includes a steel sheet cofferdam surrounded by a number of steel sheet piles 1. The steel sheet cofferdam prevents external water from entering the steel sheet cofferdam. A support beam 2 is erected on the steel sheet pile 1, a support plate 3 is provided on the support beam 2, a positioning frame 5 is provided on the support plate 3, a propulsion mechanism 4 is slidably connected to the positioning frame 5, the propulsion mechanism 4 is pushed by a driving mechanism 6, the propulsion mechanism 4 is connected to an inner support mechanism 7, and the inner support mechanism 7 is in contact with the inner wall of the steel sheet cofferdam.

[0025] As Figure 2 shown, a connecting hook 11 is fixedly connected to the inner wall of the steel sheet pile 1. The connecting hook 11 is provided with an upward groove. The support beam 2 includes an inner ring 21 and an outer ring 22. The outer ring 22 is distributed along the inner wall of the steel sheet cofferdam. The outer ring 22 is erected on the connecting hook 11, and the inner ring 21 is in a cross shape as a whole. The inner ring 21 and the outer ring 22 form a framework for erecting the support plate 3, and the inner ring 21 and the outer ring 22 bear the gravity of the inner support plate 73 and its upper components.

[0026] The support plate 3 is laid on the inner ring 21. The support plate 3 includes an edge plate 31 and a core plate 32. The edge plate 31 is arranged around the core plate 32. The edge plate 31 is arranged at the branch of the cross, and the core plate 32 is arranged at the center of the cross. During installation, the edge plate 31 and the core plate 32 are erected together by piecemeal hoisting, avoiding the use of large-load lifting tools for installation, facilitating disassembly, assembly and adjustment. After installation, workers can operate on the support plate 3.

[0027] A ladder 311 is detachably connected to the edge plate 31. There are connecting columns on the edge plate 31. The top of the ladder 311 is provided with a connecting hole. When installing the ladder 311, the connecting column can be inserted into the connecting hole. Workers can enter the bottom of the steel sheet pile cofferdam through the ladder 311 for construction operations.

[0028] As Figure 3 shown, the propulsion mechanism 4 includes a concave part 41, a convex part 42 and a propulsion cone block 43. The outer side of the propulsion cone block 43 is an inclined surface, which inclines from the outside to the inside. The propulsion cone blocks 43 are arranged on both sides of the concave part 41 and the convex part 42. The concave part 41 is arranged below the convex part 42. The surface where the propulsion cone block 43 is connected to the concave part 41 and the convex part 42 is a straight surface. There is a gap between the concave part 41 and the convex part 42, and the height of the gap is greater than or equal to the height of the propulsion cone block 43, so that the concave part 41 will not be interfered when the convex part 42 moves downward.

[0029] As Figure 4 shown, the bottom of the positioning frame 5 is four struts 51, and the top of the positioning frame 5 is a rectangular frame 52. The bottom of the strut 51 is screwed to the core plate 32. A slideway 511 is arranged on the side wall of the strut 51. Slide blocks 431 are arranged on both side walls of the propulsion cone block 43, and the slide blocks 431 slide in the slideway 511. The slideway 511 ensures that the propulsion cone block 43 can only move in the vertical direction.

[0030] The driving mechanism 6 includes an upper hydraulic rod 61 and a lower hydraulic rod 62. The top of the upper hydraulic rod 61 is fixedly connected to the top of the rectangular frame 52. The telescopic end of the upper hydraulic rod 61 is fixedly connected to the convex part 42. The telescopic movement of the upper hydraulic rod 61 drives the convex part 42 and the propulsion cone block 43 on its side wall to move up and down. The lower hydraulic rod 62 is arranged on the top surface of the core plate 32, and the telescopic end of the lower hydraulic rod 62 is fixedly connected to the concave part 41. The telescopic movement of the lower hydraulic rod 62 drives the concave part 41 and the propulsion cone block 43 on its side wall to move.

[0031] The inner support mechanism 7 includes a push rod 71, a support arm 72, and an inner support plate 73. The inner support plate 73 is arranged on the inner wall of the steel sheet pile cofferdam. One end of the support arm 72 has several legs, and the legs of the support arm 72 are in contact with the inner support plate 73. The other end of the support arm 72 is a square tube with a cavity inside. The square tube of the support arm 72 is slidably connected to one end of the push rod 71. After the push rod 71 is inserted into the square tube, the push rod 71 and the support arm 72 will not slide left and right. The push rod 71 can directly transmit force to the support arm 72. The other end of the push rod 71 is slidably connected to the push cone 43. During use, by extending the upper hydraulic rod 61 and retracting the lower hydraulic rod 62, the push cone 43 moves downward, further causing the push rod 71 to move forward. The push rod 71 pushes the support arm 72 to move and press the inner support plate 73. The inner support plate 73 supports the inside of the steel sheet pile cofferdam to prevent the steel sheet pile cofferdam from tilting inward due to excessive external water pressure. The upper hydraulic rod 61 and the convex part 42 control the inner support mechanism 7 of one set of opposite sides, and the lower hydraulic rod 62 and the concave part 41 control the inner support mechanism 7 of the other set of opposite sides. Dividing them into two groups is convenient for providing appropriate thrust to the steel sheet piles 1 on the opposite sides according to the actual situation. After the steel sheet pile cofferdam tilts, the distance and pressure of the inner support mechanism 7 can be adjusted by the telescopic movement of the upper hydraulic rod 61 or the lower hydraulic rod 62.

[0032] Support rings 711 are provided on the edge plate 31 and the core plate 32. The push rod 71 is slidably connected to the support rings 711. The support rings 711 cooperate with the push rod 71 to connect the edge plate 31 and the core plate 32, making the installation of the edge plate 31 and the core plate 32 more stable. The support rings 711 also support the push rod 71, enabling the push rod 71 to be stably positioned at a preset height during installation. Support columns 721 are also provided on the edge plate 31. The support arm 72 is slidably connected to the support columns 721. The support columns 721 prevent the support arm 72 from tilting downward.

[0033] Diagonal braces 8 are provided at the ends of adjacent inner support plates 73. After the inner support plates 73 complete the support, the diagonal braces 8 are welded and installed to make the inner corners of the steel sheet pile cofferdam more stable.

[0034] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A water conservancy and hydropower construction cofferdam support structure, comprising a steel sheet cofferdam surrounded by a plurality of steel sheet piles (1), characterized in that: A support beam (2) is mounted on the steel sheet pile (1), a support plate (3) is mounted on the support beam (2), a positioning frame (5) is mounted on the support plate (3), the positioning frame (5) is slidably connected to a propulsion mechanism (4), the propulsion mechanism (4) is driven by a driving mechanism (6), the propulsion mechanism (4) is connected to an internal support mechanism (7), and the internal support mechanism (7) is in contact with the inner wall of the steel plate cofferdam.

2. A water conservancy and hydropower construction cofferdam support structure according to claim 1, characterized in that: A connecting hook (11) is fixedly connected to the inner wall of the steel sheet pile (1); the support beam (2) comprises an inner ring (21) and an outer ring (22); the outer ring (22) is mounted on the connecting hook (11); and the inner ring (21) is in a cross shape as a whole.

3. A water conservancy and hydropower construction cofferdam support structure according to claim 2, characterized in that: The support plate (3) is laid on the inner ring (21), and the support plate (3) comprises an edge plate (31) and a core plate (32), wherein the edge plate (31) is arranged around the core plate (32).

4. A water conservancy and hydropower construction cofferdam support structure according to claim 3, characterized in that: The edge plate (31) is detachably connected to a ladder (311).

5. A water conservancy and hydropower construction cofferdam support structure according to claim 4, characterized in that: The propulsion mechanism (4) comprises a concave portion (41), a convex portion (42) and a propulsion cone block (43); the outer side of the propulsion cone block (43) is an inclined surface; the outer side of the propulsion cone block (43) is inclined from the outside to the inside; the propulsion cone blocks (43) are arranged on both sides of the concave portion (41) and the convex portion (42); the concave portion (41) is arranged below the convex portion (42).

6. A water conservancy and hydropower construction cofferdam support structure according to claim 5, characterized in that: The bottom of the positioning frame (5) is formed of four pillars (51), the top of the positioning frame (5) is formed of a rectangular frame (52), a slideway (511) is provided on the pillars (51), and sliding blocks (431) are provided on both side walls of the pushing cone block (43), and the sliding blocks (431) slide in the slideways (511).

7. A water conservancy and hydropower construction cofferdam support structure according to claim 6, characterized in that: The driving mechanism (6) comprises an upper hydraulic rod (61) and a lower hydraulic rod (62); the top of the upper hydraulic rod (61) is fixedly connected to the top of the rectangular frame (52); the telescopic end of the upper hydraulic rod (61) is fixedly connected to the convex portion (42); the lower hydraulic rod (62) is arranged on the top surface of the core plate (32); the telescopic end of the lower hydraulic rod (62) is fixedly connected to the concave portion (41).

8. A water conservancy and hydropower construction cofferdam support structure according to claim 7, characterized in that: The inner support mechanism (7) comprises a propulsion rod (71), a support arm (72) and an inner support plate (73); the inner support plate (73) is arranged on the inner wall of the steel plate cofferdam; one end of the support arm (72) is in contact with the inner support plate (73); the other end of the support arm (72) is slidably connected to one end of the propulsion rod (71); and the other end of the propulsion rod (71) is slidably connected to the propulsion cone block (43).

9. A water conservancy and hydropower construction cofferdam support structure according to claim 8, characterized in that: The edge plate (31) and the core plate (32) are provided with a support ring (711), the push rod (71) is slidably connected to the support ring (711), and the edge plate (31) is also provided with a support column (721), and the support arm (72) is slidably connected to the support column (721).

10. A water conservancy and hydropower construction cofferdam support structure according to claim 9, characterized in that: The ends of the two adjacent inner support plates (73) are provided with oblique supports (8).

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