Water retaining weir for water conservancy construction

Abstract

The invention relates to a water retaining weir for water conservancy construction, which comprises a first cofferdam plate, a second cofferdam plate and a third cofferdam plate, and the cofferdam plates are respectively and vertically inserted on corresponding bases; inserting sleeves are arranged on the inner sides of the first cofferdam plate, the second cofferdam plate and the third cofferdam plate, inserting rods are inserted into the inserting sleeves, inserting holes are formed in the bases, the inserting rods are inserted into the inserting holes, a first wedge block and a first wedge groove are formed in the left end and the right end of the first cofferdam plate respectively, and a second wedge groove and a third wedge groove are formed in the inner side of the first cofferdam plate. A fourth wedge groove and a second wedge block are arranged at the left end and the right end of the second cofferdam plate respectively, a fifth wedge groove and a sixth wedge groove are formed in the inner side of the second cofferdam plate, and a third wedge block and a fourth wedge block are arranged at the left end and the right end of the third cofferdam plate respectively. The first cofferdam plates, the second cofferdam plates and the third cofferdam plates can define a rectangular frame through matching of the corresponding wedge blocks and the wedge grooves between the adjacent cofferdam plates, water retaining weirs of different sizes can be defined by selecting different numbers of cofferdam plates, use is flexible, and applicability is higher.

Description

Technical Field

[0001] The invention relates to the field of auxiliary devices for water conservancy construction, and in particular to a water retaining weir for water conservancy construction. Background Art

[0002] Water retaining weirs for water conservancy construction are used at construction sites to prevent water or soil from entering the construction or maintenance operation area, play a role in isolating water in the river channel, and facilitate construction. For example, the utility model patent with authorization announcement number CN221878136U discloses a water retaining weir for water conservancy construction, which includes multiple cofferdam baffles, the two ends of the multiple cofferdam baffles are vertically arranged, and the multiple cofferdam baffles are connected end to end to form an internal hollow water retaining weir structure. Each cofferdam baffle is provided with an inclined groove at both ends, and the adjacent cofferdam baffles are 90 degrees, and finally a square construction area is enclosed. This structure is only suitable for specific construction scenarios. Once it is enclosed, it cannot be lengthened, widened, or heightened as needed.

[0003] The invention patent with application publication number CN114319399A discloses a water conservancy construction cofferdam device, which directly adopts a cylindrical cofferdam plate and is vertically arranged in the water when in use. Obviously, the manufactured cofferdam device is only applicable to construction scenes of a specific size and cannot be adjusted according to needs. Summary of the invention

[0004] The object of the present invention is to provide a water retaining weir for water conservancy construction, which can provide a variety of combination methods to adapt to the needs of various construction scenarios.

[0005] To achieve the above object, the present invention adopts the following technical solution: A water retaining weir for water conservancy construction comprises a first cofferdam plate, a second cofferdam plate, a third cofferdam plate, and a first base, a second base, and a third base, wherein the first cofferdam plate, the second cofferdam plate, and the third cofferdam plate are respectively vertically inserted on the first base, the second base, and the third base; the inner sides of the first cofferdam plate, the second cofferdam plate, and the third cofferdam plate are all provided with plug sleeves for inserting plug rods, the first base, the second base, and the third base are all provided with plug holes for inserting the bottom ends of the plug rods, and the upper ends of the plug rods are provided with sockets for inserting the upper plug rods; The first cofferdam plate is provided with a first wedge block and a first wedge groove at left and right ends, respectively; the first cofferdam plate is provided with a second wedge groove and a third wedge groove at left and right intervals on the inner side; the second cofferdam plate is provided with a fourth wedge groove and a second wedge block at left and right ends, respectively; the second cofferdam plate is provided with a fifth wedge groove and a sixth wedge groove at left and right intervals on the inner side; the third cofferdam plate is provided with a third wedge block and a fourth wedge block at left and right ends, respectively; the first wedge block, the second wedge block and the third wedge block have the same structure, and are both wide at the top and narrow at the bottom; the first wedge groove, the second wedge groove, the third wedge groove, the fourth wedge groove, the fifth wedge groove and the sixth wedge groove have the same structure, and can be sealed and fitted with any wedge block; When the first cofferdam plate, the second cofferdam plate and the third cofferdam plate are selected for use, at least two first cofferdam plates are provided, and the first cofferdam plates are installed on the rear side and the right side, at least one second cofferdam plate is provided, and the second cofferdam plate is installed on the left side, and at least one third cofferdam plate is provided, and the third cofferdam plate is installed on the front side. Each of the first cofferdam plates, the second cofferdam plates and the third cofferdam plates can form a rectangular frame by means of the cooperation of the corresponding wedge blocks and wedge grooves between adjacent cofferdam plates.

[0006] Furthermore, the bottoms of the first cofferdam plate, the second cofferdam plate and the third cofferdam plate are all provided with insertion protrusions, the upper sides of the first base, the second base and the third base are all provided with slots, and sealing waterproof strips are provided in the slots along the length direction of the slots. The insertion protrusions are inserted into the slots of the corresponding sockets and squeeze the sealing waterproof strips.

[0007] Furthermore, the lower sides of the first base, the second base and the third base are all provided with nails for inserting into the foundation.

[0008] Furthermore, the left and right ends of the first base and the second base are respectively provided with a first pin hole and a plug pin, and the inner sides of the first base and the second base are provided with two groups of second pin holes spaced apart along the left and right directions. The plug pin can be selectively plugged into the first pin hole and the second pin hole, and when the first base, the second base and the third base are in use, the contact surfaces of adjacent bases are sealed and waterproof.

[0009] Furthermore, the plug sleeve includes a cylinder and a triangular portion located at the lower end of the cylinder, the triangular portion has a guide hole that is larger at the bottom and smaller at the top, and the guide hole is connected to the inner hole of the cylinder for the insertion rod to pass through.

[0010] Furthermore, the first cofferdam plate, the second cofferdam plate, and the third cofferdam plate have the same height, the first cofferdam plate and the second cofferdam plate have the same length, and the length of the first cofferdam plate is greater than that of the third cofferdam plate.

[0011] Furthermore, the lower end of the insertion rod is an external threaded portion, the socket at the upper end is a threaded hole, and the length of the insertion rod is less than the height of the first cofferdam plate.

[0012] Furthermore, the upper sides of the first cofferdam plate, the second cofferdam plate and the third cofferdam plate are provided with mounting grooves, and the mounting grooves are used to cooperate with the inserting protrusions at the lower part of a cofferdam plate stacked above for sealing and waterproofing.

[0013] Furthermore, the water retaining weir for water conservancy construction also includes two connecting components with adjustable deployment angles, and the connecting components are respectively provided with a fifth wedge block and a seventh wedge groove on both sides of the deployment direction, and the connecting components are defined as a first connecting component and a second connecting component. When the first cofferdam plate, the second cofferdam plate, the first connecting component, and the second connecting component are selected, the first connecting component is connected between two adjacent second cofferdam plates, and the fifth wedge block and the seventh wedge groove of the first connecting component respectively cooperate with the fourth wedge groove of a second cofferdam plate and the second wedge block of another second cofferdam plate; the second connecting component is connected between two adjacent first cofferdam plates, and the fifth wedge block and the seventh wedge groove of the second connecting component respectively cooperate with the first wedge groove of a first cofferdam plate and the first wedge block of another first cofferdam plate; the other second cofferdam plate and the other first cofferdam plate are arranged on a slope.

[0014] Furthermore, the connecting assembly includes a first fan-shaped plate and a second fan-shaped plate hinged together, the two contacting surfaces of the first fan-shaped plate and the second fan-shaped plate are sealed and waterproof, the fifth wedge block is arranged on the first fan-shaped plate, and the seventh wedge groove is arranged on the second fan-shaped plate.

[0015] Beneficial effects of the present invention: The water retaining weir for water conservancy construction of the present invention comprises a first cofferdam plate, a second cofferdam plate, a third cofferdam plate and a corresponding base. The first cofferdam plate and the second cofferdam plate are both provided with wedge grooves and wedge blocks, and the wedge grooves are designed in two directions perpendicular to each other, so that the first cofferdam plate and the second cofferdam plate can be connected in sequence in a straight line direction, or can be connected at right angles. The third cofferdam plate is used for final sealing, and the wedge blocks at both ends of the third cofferdam plate can be inserted into the wedge grooves of the two parallel cofferdam plates. The base is used to support and fix the cofferdam plate on the upper side. According to the specific size of the cofferdam area, the corresponding number of cofferdam plates can be selected to quickly splice rectangular frames of different sizes, so that the water retaining weir of the present invention is not limited to a cofferdam area of ​​a specific size, has better applicability, and is modularly designed and easy to assemble.

[0016] Furthermore, a connecting component capable of adjusting the unfolding angle is designed for connecting between two cofferdam plates, thereby being able to adjust the other cofferdam plate to be in an inclined state, which is suitable for use on river slopes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional diagram of the first cofferdam plate of the present invention; Figure 2 is a three-dimensional view from another angle of the first cofferdam plate in the present invention; Figure 3 is a three-dimensional diagram of the second cofferdam plate of the present invention; Figure 4 is a three-dimensional diagram of the third cofferdam plate of the present invention; Figure 5 is a three-dimensional diagram of the first base in the present invention; Figure 6 yes Figure 5 A partial view of one end of the first base; Figure 7 is a three-dimensional diagram of the second base in the present invention; Figure 8 is a three-dimensional diagram of the third base in the present invention; Fig. 9 is a stereoscopic diagram of the insertion rod of the present invention; Fig.10 It is a schematic diagram of a first combined use mode of a water retaining weir for water conservancy construction of the present invention; Fig.11 It is a schematic diagram of the second combined use mode of the water retaining weir for water conservancy construction of the present invention (showing a partial structure); Fig.12 It is a schematic diagram of the third combined use mode of the water retaining weir for water conservancy construction of the present invention; Fig.13 It is a schematic diagram of a fifth combined use mode of a water retaining weir for water conservancy construction of the present invention; Fig.14 yes Fig.13 A three-dimensional diagram of the first connecting member; Fig.15 yes Fig.14 View of the first sector plate.

[0018] The names corresponding to the marks in the figure are: 1. First cofferdam plate; 11. First wedge block; 12. First wedge groove; 13. Second wedge groove; 14. Third wedge groove; 15. Insert sleeve; 151. Cylinder; 152. Triangular portion; 16. Insert convex; 2. Second cofferdam plate; 21. Second wedge block; 22. Fourth wedge groove; 23. Fifth wedge groove; 24. Sixth wedge groove; 3. Third cofferdam plate; 31. Third wedge block; 32. Fourth wedge block; 4. First base; 41. Slot; 4 2. Socket; 43. Pin; 44. First pin hole; 45. Pin; 46. Second pin hole; 5. Second base; 6. Third base; 7. Rod; 71. External threaded portion; 72. Socket; 8. First connecting component; 81. First fan-shaped plate; 811. Fifth wedge block; 8111. First side wall; 812. Sealing groove; 82. Second fan-shaped plate; 821. Seventh wedge groove; 8211. Second side wall; 9. Second connecting component. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] Example: like Figure 1-Figure 15 As shown, a water retaining weir for water conservancy construction includes a first cofferdam plate 1, a second cofferdam plate 2, a third cofferdam plate 3, and a first base 4, a second base 5, and a third base 6. In this embodiment, the structures of these parts are made of steel plates. In order to prevent the cofferdam plates from being too heavy, a vacuum double-layer structure can be adopted. The first cofferdam plate 1, the second cofferdam plate 2, and the third cofferdam plate 3 are three main commonly used cofferdam plates. The three have the same general structure and only differ in local details. When in use, the first cofferdam plate 1, the second cofferdam plate 2, and the third cofferdam plate 3 can be vertically inserted into the first base 4, the second base 5, and the third base 6, respectively, but they do not have to be inserted into the corresponding bases to be used. If used in conjunction with the base, the first cofferdam plate 1, the second cofferdam plate 2, and the third cofferdam plate 3 are respectively compatible with the length of the first base 4, the second base 5, and the third base 6, and are used in pairs.

[0021] The first cofferdam board 1 , the second cofferdam board 2 , and the third cofferdam board 3 have the same height, which can be selected in the range of 1.5 to 3 meters; the first cofferdam board 1 and the second cofferdam board 2 have the same length, preferably about 2 meters; the first cofferdam board 1 is longer than the third cofferdam board 3 .

[0022] like Figure 1-Figure 4 As shown, the inner sides of the first cofferdam plate 1, the second cofferdam plate 2, and the third cofferdam plate 3 are all provided with plug sleeves 15 for inserting the plug rod 7, and each cofferdam plate is provided with two plug sleeves 15. Figure 5-Figure 8 As shown, the first base 4, the second base 5, and the third base 6 are all provided with a socket 42 for the corresponding bottom end of the plug rod 7 to be plugged in. The plug rod 7 located on the inner side can support the corresponding cofferdam plate to prevent it from falling inwards. On the contrary, it is not easy for the cofferdam plate to fall outwards when there is water on the outside. The lower end of the plug rod 7 is an external threaded portion 71, which is threadedly connected to the socket 42. The upper end of the plug rod 7 is provided with a socket 72 and is a threaded hole, so that the upper plug rod 7 can be plugged in when two layers of cofferdam plates are stacked. The length of a single plug rod 7 is less than the height of the first cofferdam plate 1, so as to prevent the connection between the upper and lower plug rods 7 from being directly opposite to the butt joint of the upper and lower cofferdam plates, thereby better improving the support.

[0023] like Figure 1-Figure 2 As shown, the plug sleeve 15 includes a cylinder 151 and a triangular portion 152 located at the lower end of the cylinder 151. The triangular portion 152 has a guide hole that is larger at the bottom and smaller at the top. The lower opening of the guide hole has a larger diameter than the inner hole of the cylinder 151. The guide hole is connected to the inner hole of the cylinder 151 for the insertion rod 7 to pass through. With such a design, when installing and using, the insertion rod 7 can be connected to the corresponding base first, and then the cofferdam plate can be installed from top to bottom. The guidance of the guide hole reduces the difficulty of alignment during installation. After the insertion rod 7 is inserted into the cylinder 151, it plays a positioning role, so that the cofferdam plate can be matched with the base in place.

[0024] like Figure 2 As shown, the bottoms of the first cofferdam plate 1, the second cofferdam plate 2, and the third cofferdam plate 3 are all inserted with insertion protrusions 16, which are arranged along the length direction of the corresponding cofferdam plate, and the thickness of the insertion protrusions 16 is less than the thickness of the cofferdam plate. Figure 5-Figure 8 As shown, the upper sides of the first base 4, the second base 5, and the third base 6 are all provided with slots 41, which are arranged through the length direction of the base. Figure 2 and 6 The insertion protrusion 16 and the slot 41 are shown. A sealing waterproof strip is provided in the slot 41 along the length direction of the slot 41. The insertion protrusion 16 is inserted into the slot 41 of the corresponding socket and squeezes the sealing waterproof strip. The sealing waterproof strip can be a waterproof packing as a sealing strip, which is bonded in the slot 41. Other existing waterproof strips can also be used in other embodiments.

[0025] The lower sides of the first base 4, the second base 5, and the third base 6 are all provided with a pin 43 for inserting into the foundation of the river. The pin 43 shown in the figure is a schematic diagram, and the specific length can be selected. The purpose is to insert it into the foundation to play a certain fixing role. The pin 43 can be in a cone shape with a larger top and a smaller bottom, which is convenient for downward insertion. Some barb structures can also be set on the periphery, which does not affect the downward insertion and can improve the grip; or the outer surface of the pin 43 is designed to be a threaded structure, because a smooth surface is not suitable.

[0026] like Figure 1 and 2 As shown, the left and right ends of the first cofferdam plate 1 are respectively provided with a first wedge block 11 and a first wedge groove 12, and the inner side of the first cofferdam plate 1 is provided with a second wedge groove 13 and a third wedge groove 14 spaced apart on the left and right sides. The wedge mouth direction of the second wedge groove 13 and the third wedge groove 14 is perpendicular to the wedge mouth direction of the first wedge groove 12. When adjacent cofferdam plates are connected in sequence in the left and right directions, the first wedge groove 12 is used, and when a right-angle connection is formed, the second wedge groove 13 and the third wedge groove 14 are used. Further explanation of the orientation: the first wedge block 11 and the first wedge groove 12 are at the two ends in the length direction of the first cofferdam plate 1, that is, the left and right ends mentioned above, not the two ends in the thickness direction of the cofferdam plate.

[0027] like Figure 3 As shown, the left and right ends of the second cofferdam plate 2 are respectively provided with a fourth wedge groove 22 and a second wedge block 21, and the inner side of the second cofferdam plate 2 is provided with a fifth wedge groove 23 and a sixth wedge groove 24 spaced apart from each other. Compared with the first cofferdam plate 1, the fourth wedge groove 22 and the second wedge block 21 are in the same position as the first wedge block 11 and the first wedge groove 12, which can be understood as a head-turning, so that when the second cofferdam plate 2 is vertically connected to the first cofferdam plate 1, the plug-in sleeve 15 on the second cofferdam plate 2 is still located on the inner side (inside and outside are relative to the cofferdam, and the inside of the cofferdam is the inner side).

[0028] like Figure 4As shown, the third wedge block 31 and the fourth wedge block 32 are respectively provided at the left and right ends of the third cofferdam plate 3. The first wedge block 11, the second wedge block 21 and the third wedge block 31 have the same structure, which are wide at the top and narrow at the bottom. The first wedge groove 12, the second wedge groove 13, the third wedge groove 14, the fourth wedge groove 22, the fifth wedge groove 23 and the sixth wedge groove 24 have the same structure and can be sealed with any wedge block; each wedge groove has a large groove depth at the top and a small groove depth at the bottom, and its groove bottom is inclined from top to bottom and is compatible with the inclined surface of the wedge block. Both sides of the groove of each wedge groove are chamfered to form a guide surface for the corresponding wedge block to be inserted. If it is a cofferdam structure that is surrounded by one layer, only one third cofferdam plate 3 is required. When the cofferdam structure is lengthened or widened, multiple first cofferdam plates 1 and second cofferdam plates 2 can be used. In particular, the first cofferdam plate 1 is used the most when the cofferdam area is expanded.

[0029] When the first cofferdam board 1, the second cofferdam board 2 and the third cofferdam board 3 are selected for use, there are several combinations to adapt to the cofferdam size required on site.

[0030] Combination method 1: Fig.10 As shown, there are two first cofferdam plates 1, and the first cofferdam plate 1 is defined as being installed on the rear side and the right side, the second cofferdam plate 2 is defined as being installed on the left side, the third cofferdam plate 3 is defined as being installed on the front side, and each of the first cofferdam plates 1, the second cofferdam plate 2, and the third cofferdam plate 3 can be surrounded by a rectangular frame by the cooperation of the corresponding wedges and wedge grooves between the adjacent cofferdam plates. Specifically, the connection sequence is as follows: the two first cofferdam plates 1 are vertically connected, and the first wedge 11 cooperates with the third wedge groove 14; the second cofferdam plate 2 is vertically connected to the other end of the first cofferdam plate 1, and its second wedge 21 cooperates with the second wedge groove 13 of the first cofferdam plate 1; the third wedge 31 at one end of the third cofferdam plate 3 cooperates with the third wedge groove 14 of the first cofferdam plate 1 on the right side, and the fourth wedge 32 at the other end cooperates with the fifth wedge groove 23 of the second cofferdam plate 2. Since the length of the third cofferdam plate 3 is slightly shorter than that of the other cofferdam plates, it is just inserted between the two parallel first cofferdam plates 1 and the second cofferdam plates 2. The cofferdam plate has a certain deadweight, which can well maintain the close contact between the wedge block and the wedge groove, and has a waterproof function, thereby achieving the purpose of isolating the water outside the cofferdam.

[0031] like Figures 5 to 7As shown, the left and right ends of the first base 4 and the second base 5 are respectively provided with a first pin hole 44 and a latch 45. The inner sides of the first base 4 and the second base 5 are provided with two groups of second pin holes 46 at intervals along the left and right directions. The latch 45 can be selectively plugged into the first pin hole 44 and the second pin hole 46. When the first base 4, the second base 5 and the third base 6 are in use, the contact surfaces of the adjacent bases are sealed and waterproof. Sealing gaskets can be provided on both end surfaces of the base, which have a certain elasticity, so that the adjacent bases can be sealed and waterproof by fitting tightly when docking. The third base 6 is used to support the third cofferdam plate 3. Its length is slightly shorter than that of other bases, and it is clamped between two parallel bases. Therefore, no latch is designed at the end of the third base 6, and it relies on the sealing gasket on the end surface to contact with the side walls of other bases.

[0032] Figures 1 to 4 As shown, the upper sides of the first cofferdam plate 1, the second cofferdam plate 2, and the third cofferdam plate 3 are provided with mounting grooves, which are used to seal and waterproof with the insertion protrusion 16 at the lower part of a cofferdam plate stacked above. The mounting groove is similar to the slot 41 of the base, and will not be described in detail.

[0033] Combination method 2: Based on the above combination method 1, the height can be increased. Fig.11 As shown, for the sake of clear understanding, only one first cofferdam plate 1 is stacked on the first cofferdam plate 1 on the rear side, and the bottom protrusion 16 of the upper first cofferdam plate 1 is matched with the mounting groove on the top of the lower first cofferdam plate 1, and two plug rods 7 are inserted into the two plug rods 7 of the lower layer, and the upper plug rods 7 are inserted into the plug sleeves 15 of the upper first cofferdam plate 1 to achieve the stability of the second cofferdam plate 2. The second cofferdam plate 2 and the third cofferdam plate 3 of the upper layer are also stacked based on the same principle, which will not be repeated. By setting two layers of cofferdam plates, the height is increased to adapt to different water depths.

[0034] Combination method 3: Based on the above combination method 1, it can be deformed and lengthened or widened, such as Fig.12 As shown, two first cofferdam plates 1 connected in sequence are arranged on the rear side, one first cofferdam plate 1 is arranged on the right side, one second cofferdam plate 2 is arranged on the left side, and one first cofferdam plate 1 and one third cofferdam plate 3 are arranged on the front side. Compared with the combination mode 1, there is one more first cofferdam plate 1 on each of the front and rear sides, thereby achieving widening.

[0035] Combination method 4: Based on the above combination method 1, the following deformation can be performed. Since it is easy to understand, no diagram is given. A first cofferdam plate 1 is set on the rear side, two first cofferdam plates 1 connected in sequence are set on the right side, two second cofferdam plates 2 connected in sequence are set on the left side, and a third cofferdam plate 3 is set on the front side. Compared with combination method 1, there is one more second cofferdam plate 2 and first cofferdam plate 1 on each side, so as to achieve lengthening. Lengthening and widening are relative, in short, the area of ​​the cofferdam area is expanded.

[0036] The above is a combination for common rectangular cofferdams, the area of ​​the cofferdam can be adjusted, and the height can also be adjusted. In practice, there is also a type of cofferdam that leans against the river slope, referred to as a U-shaped cofferdam, which is defined as the fifth combination mode. In order to improve adaptability, the present invention designs a connection component.

[0037] The water retaining weir for water conservancy construction also includes two connection components with adjustable deployment angles, such as Fig.14 As shown, the connecting component is provided with a fifth wedge block 811 and a seventh wedge groove 821 on both sides in the unfolding direction, respectively, and the connecting component is defined as a first connecting component 8 and a second connecting component 9. The structure of the second connecting component 9 is the same as that of the first connecting component 8. In other embodiments, the second connecting component may also adopt a mirror structure of the first connecting component.

[0038] like Fig.13 As shown, in Fig.10 The first connecting assembly 8 is connected between two adjacent second cofferdam plates 2, and the fifth wedge block 811 and the seventh wedge groove 821 of the first connecting assembly 8 are respectively matched with the fourth wedge groove 22 of a second cofferdam plate 2 and the second wedge block 21 of another second cofferdam plate 2 (the one on the slope). The second connecting assembly 9 is connected between two adjacent first cofferdam plates 1, and the fifth wedge block and the seventh wedge groove of the second connecting assembly 9 are respectively matched with the first wedge groove 12 of a first cofferdam plate 1 and the first wedge block 11 of another first cofferdam plate 1 (the one on the slope). The other second cofferdam plate 2 and the other first cofferdam plate 1 are on the slope and have a certain inclination angle. The connecting assembly can adapt to the inclination angle within a certain angle range. The other second cofferdam plate 2 and the other first cofferdam plate 1 may not be provided with a base according to the on-site conditions, and the insertion rod 7 is required to be used. When there is no base, the lower end of the insertion rod 7 can be directly inserted into the slope; according to the geological conditions, an additional positioning rod can also be used to insert into the plug-in sleeve on the inner side of the cofferdam plate, and the lower end of the positioning rod is inserted into the slope, which can be inserted deeper to improve stability.

[0039] by Fig.14 Taking the first connecting assembly 8 as an example, it includes a first sector plate 81 and a second sector plate 82 which are hinged together, and the hinge axis is indicated by A in the figure. The two contacting surfaces of the first sector plate 81 and the second sector plate 82 are sealed and waterproof, the fifth wedge block 811 is arranged on the first sector plate 81, and the seventh wedge groove 821 is arranged on the second sector plate 82. Fig.15 As shown, a sealing groove 812 is provided on one side of the first sector plate 81. The sealing groove is a long groove and can be installed with a sealing strip. The sealing groove 812 is designed in a Y shape, but is not limited to this. The position of the sealing groove ensures that the sealing strip is close to the side wall of the second sector plate 82 when the connecting component rotates, that is, the connecting component still has waterproof performance within a certain angle range.

[0040] In order to improve the docking stability of the connecting assembly with the adjacent cofferdam plates, several magnet blocks can be embedded in the fifth wedge block 811 and the seventh wedge groove 821. When docking with the cofferdam plates, the magnet blocks can generate a certain adsorption force on the ends of the cofferdam plates. Fig.14 On the first side wall 8111 and the second side wall 8211, the first side wall 8111 is a side wall of the fifth wedge block 811, and the second side wall 8211 is a side wall of the seventh wedge groove 821. Carbon steel is used for the cofferdam plate and the connecting components, and stainless steel is not selected. Stainless steel has basically no magnetic attraction with magnets and is relatively more expensive. To prevent corrosion, anti-corrosion paint is applied on the surface of the finished product.

[0041] In other embodiments, the connecting component can also be designed to be flexible, and the fifth wedge block and the seventh wedge groove are respectively provided on both sides of the unfolding direction. The middle part is made of flexible waterproof material, and the whole is fan-shaped. The flexible waterproof material adopts existing waterproof cloth, such as waterproof canvas, which can be bent by utilizing its flexibility and can adapt to adjustment within a certain angle range.

[0042] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that are the same or similar to those of the present application fall within the protection scope of the present invention.

Claims

1. A water retaining weir for water conservancy construction, characterized in that: It comprises a first cofferdam plate, a second cofferdam plate, a third cofferdam plate, and a first base, a second base, and a third base. The first cofferdam plate, the second cofferdam plate, and the third cofferdam plate are respectively vertically inserted on the first base, the second base, and the third base; the inner sides of the first cofferdam plate, the second cofferdam plate, and the third cofferdam plate are all provided with plug sleeves for plugging in plug rods, the first base, the second base, and the third base are all provided with plug holes for plugging in the bottom ends of the plug rods, and the upper ends of the plug rods are provided with sockets for plugging in the upper plug rods; The first cofferdam plate is provided with a first wedge block and a first wedge groove at left and right ends, respectively; the first cofferdam plate is provided with a second wedge groove and a third wedge groove at left and right intervals on the inner side; the second cofferdam plate is provided with a fourth wedge groove and a second wedge block at left and right ends, respectively; the second cofferdam plate is provided with a fifth wedge groove and a sixth wedge groove at left and right intervals on the inner side; the third cofferdam plate is provided with a third wedge block and a fourth wedge block at left and right ends, respectively; the first wedge block, the second wedge block and the third wedge block have the same structure, and are both wide at the top and narrow at the bottom; the first wedge groove, the second wedge groove, the third wedge groove, the fourth wedge groove, the fifth wedge groove and the sixth wedge groove have the same structure, and can be sealed and fitted with any wedge block; When the first cofferdam plate, the second cofferdam plate and the third cofferdam plate are selected for use, at least two first cofferdam plates are provided, and the first cofferdam plates are installed on the rear side and the right side, at least one second cofferdam plate is provided, and the second cofferdam plate is installed on the left side, and at least one third cofferdam plate is provided, and the third cofferdam plate is installed on the front side. Each of the first cofferdam plates, the second cofferdam plates and the third cofferdam plates can form a rectangular frame by means of the cooperation of the corresponding wedge blocks and wedge grooves between adjacent cofferdam plates.

2. The water retaining weir for water conservancy construction according to claim 1 is characterized in that: The bottoms of the first cofferdam plate, the second cofferdam plate and the third cofferdam plate are all provided with insertion protrusions, the upper sides of the first base, the second base and the third base are all provided with slots, and sealing waterproof strips are provided in the slots along the length direction of the slots. The insertion protrusions are inserted into the slots of the corresponding sockets and squeeze the sealing waterproof strips.

3. The water retaining weir for water conservancy construction according to claim 1 is characterized in that: The lower sides of the first base, the second base and the third base are all provided with inserting nails for inserting into the foundation.

4. The water retaining weir for water conservancy construction according to claim 1 is characterized in that: The first base and the second base are respectively provided with a first pin hole and a plug at the left and right ends thereof; two groups of second pin holes are arranged at intervals along the left and right directions on the inner sides of the first base and the second base; the plug can be selectively plugged into the first pin hole and the second pin hole; when the first base, the second base and the third base are in use, the contact surfaces of adjacent bases are sealed and waterproof.

5. The water retaining weir for water conservancy construction according to claim 1 is characterized in that: The plug sleeve comprises a cylinder and a triangular portion located at the lower end of the cylinder. The triangular portion has a guide hole which is larger at the bottom and smaller at the top. The guide hole is connected to the inner hole of the cylinder for the insertion rod to pass through.

6. The water retaining weir for water conservancy construction according to claim 1 is characterized in that: The first cofferdam plate, the second cofferdam plate and the third cofferdam plate have the same height, the first cofferdam plate and the second cofferdam plate have the same length, and the first cofferdam plate is longer than the third cofferdam plate.

7. The water retaining weir for water conservancy construction according to claim 6 is characterized in that: The lower end of the insertion rod is an external threaded portion, the socket at the upper end is a threaded hole, and the length of the insertion rod is less than the height of the first cofferdam plate.

8. The water retaining weir for water conservancy construction according to claim 2 is characterized in that: The upper sides of the first cofferdam plate, the second cofferdam plate and the third cofferdam plate are provided with mounting grooves, and the mounting grooves are used for sealing and waterproofing with the inserting protrusions at the lower part of a cofferdam plate stacked above.

9. The water retaining weir for water conservancy construction according to claim 1, characterized in that: The water retaining weir for water conservancy construction also includes two connecting components with adjustable expansion angles, and the connecting components are respectively provided with a fifth wedge block and a seventh wedge groove on both sides of the expansion direction. The connecting components are defined as a first connecting component and a second connecting component. When the first cofferdam plate, the second cofferdam plate, the first connecting component, and the second connecting component are selected, the first connecting component is connected between two adjacent second cofferdam plates, and the fifth wedge block and the seventh wedge groove of the first connecting component respectively cooperate with the fourth wedge groove of a second cofferdam plate and the second wedge block of another second cofferdam plate; the second connecting component is connected between two adjacent first cofferdam plates, and the fifth wedge block and the seventh wedge groove of the second connecting component respectively cooperate with the first wedge groove of a first cofferdam plate and the first wedge block of another first cofferdam plate; the other second cofferdam plate and the other first cofferdam plate are arranged on a slope.

10. The water retaining weir for water conservancy construction according to claim 9, characterized in that: The connecting assembly includes a first fan-shaped plate and a second fan-shaped plate which are hinged together. The two contacting surfaces of the first fan-shaped plate and the second fan-shaped plate are sealed and waterproof. The fifth wedge block is arranged on the first fan-shaped plate, and the seventh wedge groove is arranged on the second fan-shaped plate.

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