Cofferdam device for hydraulic engineering construction and operation method of cofferdam device

Abstract

The invention discloses a cofferdam device for hydraulic engineering construction and an operation method thereof.The device comprises a cofferdam, buffering mechanisms arranged on the periphery of the exterior of the cofferdam, reinforcing mechanisms arranged on the periphery of the exterior of the cofferdam and driving control mechanisms arranged at the four corners of the cofferdam, and the cofferdam is composed of supporting columns and steel plates and forms a rectangular frame structure; the reinforcing mechanism is connected with a first fixing block and a second fixing block through a reinforcing rod to enhance the stability of the cofferdam, the driving control mechanism is composed of a forward and reverse motor, a sliding groove, a threaded rod and a sliding block and can automatically adjust the position of the buffering mechanism according to the change of the water level, and the buffering mechanism comprises a supporting rod, an arc-shaped first elastic plate, an arc-shaped second elastic plate and a first damper. Impact energy is absorbed through elastic deformation and damping force, and the cofferdam is protected against impact of water flow and floating objects. The position of the buffer mechanism can be automatically adjusted according to the water level condition, and it is ensured that the buffer mechanism is located at the optimal working position all the time so as to meet the buffer requirements under different water level conditions.

Description

Technical Field

[0001] The present invention belongs to the technical field of water conservancy construction, and more specifically, relates to a cofferdam device for water conservancy project construction and an operation method thereof. Background Technique

[0002] A cofferdam refers to a temporary retaining structure built during the construction of water conservancy projects for the construction of permanent water conservancy facilities. Its function is to prevent water and soil from entering the construction location of the building, so as to drain water inside the cofferdam, excavate the foundation pit, and build structures. Generally, it is mainly used in hydraulic construction. Except as part of the formal building, the cofferdam is generally demolished after use.

[0003] Currently, the traditional ones are all steel sheet pile cofferdams, which achieve the function of water isolation by splicing multiple steel sheet piles together, enabling construction to be carried out inside the steel sheet piles under the conditions of no water and safety. The steel sheet piles often bear the inward earth pressure and the external water pressure, and usually internal supports are set inside the steel sheet piles to balance the water pressure and the earth pressure. However, when there are large floating objects such as floating logs in the water impacting the steel sheet piles, only the strength of the steel sheet piles themselves can be relied on to resist the impact, which often causes great damage to the steel sheet pile cofferdam and triggers engineering accidents. Summary of the Invention

[0004] Aiming at the above defects or improvement requirements of the prior art, the present invention provides a cofferdam device for water conservancy project construction and an operation method thereof. By means of a reinforcement mechanism, the compressive capacity of the cofferdam is improved, enabling it to withstand greater water pressure and earth pressure, thereby ensuring the safety of the cofferdam in a complex construction environment. When the water flow beats and impacts the cofferdam, or is impacted by objects such as floating logs in the water, the buffer mechanism can more effectively reduce the vibration transmission, reduce the impact force of the water flow or the floating objects in the water on the cofferdam, and reduce the risk of deformation and damage of the cofferdam, playing a good buffering and protecting role. Through the setting of the drive control mechanism, the intelligent and automated level of the cofferdam device is further improved. It can drive the buffer mechanism to automatically lift according to the rise and fall of the water level, effectively solving the problem that the buffer mechanism in the traditional cofferdam device cannot function due to the change of the water level.

[0005] To achieve the above object, according to a cofferdam device for water conservancy project construction of the present invention, it includes a cofferdam, a buffer mechanism arranged around the outside of the cofferdam, a reinforcement mechanism arranged around the outside of the cofferdam, and a drive control mechanism arranged at the four corners of the cofferdam; wherein,

[0006] The cofferdam includes a plurality of support columns and a plurality of steel plates, which consists of four sides, and support columns are arranged on both sides of each side. Steel plates are arranged between the support columns, and the plurality of support columns and steel plates enclose a rectangular frame structure;

[0007] The reinforcement mechanism includes first fixing blocks fixedly installed on two adjacent outer side walls of the support column. A plurality of second fixing blocks are provided on the outer wall of the steel plate. The first fixing blocks on each surface and the plurality of second fixing blocks are connected by reinforcement rods.

[0008] The drive control mechanism includes a positive and negative motor provided at the top of the support column. A chute is provided on the adjacent outer side walls of the support column facing the outside. A threaded rod is rotatably connected inside the chute. The output end of the positive and negative motor is fixedly connected to the top of the threaded rod. A slider is rotatably connected to the outside of the threaded rod.

[0009] The buffer mechanism includes a support rod and a first elastic plate. The first elastic plate is arc-shaped. Empty slots are provided at both ends of the first elastic plate. The support rod passes through the empty slots at both ends of the first elastic plate. A second elastic plate fixedly installed on the outer side wall of the support rod is provided between the support rod and the first elastic plate. The second elastic plate is arc-shaped. A plurality of top blocks are fixedly installed on the side wall of the first elastic plate facing the second elastic plate. A through groove is provided in the middle of the support rod. A first damper is rotatably connected to the middle of the inner side wall of the second elastic plate. The other end of the first damper passes through the through groove and is rotatably connected to the steel plate.

[0010] Further, a conical head is provided at the bottom of each support column. Vertical grooves are provided on two adjacent side walls of each support column facing the inside of the cofferdam along its length direction. The end of the steel plate is embedded in the groove, so as to realize the tight connection between the steel plate and the support column.

[0011] Further, grooves are provided at the tops of the first fixing blocks and the second fixing blocks. The first fixing blocks and the second fixing blocks are on the same horizontal line. The reinforcement rods are embedded in the grooves of the first fixing blocks and the second fixing blocks.

[0012] Further, connection blocks are fixedly connected to both ends of the support rod. The connection blocks and the slider are fixedly connected by bolts to fix the buffer mechanism on the slider.

[0013] Further, pulleys are rotatably connected inside the empty slots, and the outer side wall of the support rod abuts against the pulleys.

[0014] Further, a first spring is fixedly installed between the end of the first elastic plate and the connection block. Two second springs are fixedly installed between the second elastic plate and the support rod, and the two second springs are respectively located on both sides of the first damper.

[0015] Further, the buffer mechanism further includes a hollow box. The hollow box includes a first transverse side wall and a second transverse side wall arranged in parallel. Longitudinal side walls are fixedly installed between both ends of the first transverse side wall and the second transverse side wall. The buffer mechanism is fixedly connected to the sliders on both sides of each surface of the cofferdam through the second transverse side wall.

[0016] A slide plate is slidably connected inside the hollow box. There is a hard plate outside the hollow box, which is parallel to the first lateral side wall. There are two through holes on the first lateral side wall. An activity rod passing through the through holes on the first lateral side wall is fixedly installed between the hard plate and both ends of the slide plate. An airbag is arranged between the hard plate and the first lateral side wall.

[0017] Further, an outer surface of the airbag is wrapped with a layer of high-elasticity and corrosion-resistant protective layer, and the protective layer includes but is not limited to rubber, polyurethane or polyurethane composite material.

[0018] Further, the two ends of the slide plate close to the end parts are rotatably connected to the piston end of the second damper, the other end of the second damper is rotatably connected to the second lateral side wall, and a third spring located between the two second dampers on both sides is fixedly installed between the slide plate and the second lateral side wall;

[0019] The second lateral side wall is fixedly installed with parallel baffles facing the inside of the hollow box. A plurality of fourth springs are fixedly installed on the side walls of the baffles facing the same direction. The other ends of the plurality of fourth springs are fixedly installed with a top plate. The top plate is slidably connected to the inner wall of the second lateral side wall. A connecting rod is rotatably connected between each top plate and the first lateral side wall.

[0020] According to the second aspect of the present invention, there is provided an operation method of a cofferdam device for water conservancy project construction, which is realized by applying the cofferdam device for water conservancy project construction, and includes:

[0021] S100: Align both sides of the steel plate with the grooves on the support columns respectively and insert them into the grooves. By using the cone head at the bottom of the support column and through mechanical hammering or other driving devices, quickly drive the support columns into the bottom of the water to ensure that they are firmly embedded in the riverbed or the bottom soil;

[0022] S200: Place the reinforcement rod accurately in the grooves of the first fixing block and the second fixing block and fix it through a buckle to further enhance the overall structural strength of the cofferdam;

[0023] S300: Install a buffer mechanism on each surface of the cofferdam and fixedly install the buffer mechanism on two sliders on each surface of the cofferdam;

[0024] S400: When the water flow slaps, impacts or the floating objects in the water hit the buffer mechanism, the buffer mechanism can absorb the impact energy and consume the vibration energy, thereby reducing the vibration amplitude to achieve the buffer protection effect on the cofferdam;

[0025] S500: When the water level changes, the liquid level sensor installed on the cofferdam will monitor the water level change in real time and transmit the signal to the controller. The controller, according to the preset program, controls the forward and reverse motor to drive the threaded rod to rotate forward and backward. The rotation of the threaded rod will drive the buffer mechanism to rise or fall through the slider to adapt to the change of the water level so that the buffer mechanism is always in the best working position, continuously playing a buffer protection role for the cofferdam.

[0026] Generally speaking, compared with the prior art through the above technical solutions conceived by the present invention, the following beneficial effects can be achieved:

[0027] 1. For the cofferdam device for water conservancy project construction of the present invention, the compression resistance of the cofferdam is improved through the reinforcement mechanism, enabling it to withstand greater water pressure and earth pressure, thus ensuring the safety of the cofferdam in a complex construction environment. When the water flow beats and impacts the cofferdam, or is impacted by floating logs and other objects in the water, the buffer mechanism can more effectively reduce the vibration transmission, reduce the impact force of the water flow or floating objects in the water on the cofferdam, and reduce the risk of deformation and damage of the cofferdam, playing a good buffer protection role. The setting of the drive control mechanism further improves the intelligent and automated level of the cofferdam device, which can drive the buffer mechanism to automatically rise and fall according to the rise and fall of the water level, effectively solving the problem that the buffer mechanism in the traditional cofferdam device cannot play a role due to the change of the water level.

[0028] 2. For the cofferdam device for water conservancy project construction of the present invention, by setting the buffer mechanism, the impact energy can be efficiently absorbed. When the water flow impacts or the floating object impacts the buffer mechanism, the impact force first acts on the first elastic plate, causing it to undergo elastic deformation, thereby absorbing the initial impact energy. The deformation of the first elastic plate drives the pulley to slide on the support rod, further compressing the first spring to achieve secondary energy absorption, playing a preliminary buffer role. When the impact force is large, the significant deformation of the first elastic plate will push the top block to compress the second elastic plate, causing it to undergo elastic deformation and further absorbing the impact energy. At the same time, the second spring and the first damper are triggered, consuming the vibration energy through elastic deformation and damping force, effectively suppressing the vibration amplitude, reducing the oscillation, and significantly reducing the transmission of the impact force. This multi-stage buffer and energy absorption mechanism not only improves the impact resistance of the cofferdam but also enhances its overall stability in a complex hydrological environment, reduces the risk of structural fatigue and damage, and extends the service life of the cofferdam.

[0029] 3. The cofferdam device for water conservancy project construction of the present invention can effectively absorb and isolate impact energy through buffer components such as hard plates, springs, air bags and dampers. When the water flow beats, impacts or floating objects hit the buffer mechanism, the impact force first acts on the hard plate, and the hard plate transmits the force to the movable rod, pushing the sliding plate to slide in the hollow box. During the sliding process of the sliding plate, the third spring is compressed, and the vibration energy is absorbed through the elastic deformation of the spring, playing a role in shock absorption and buffering. At the same time, the second damper works together, using the flow resistance of the internal liquid to further suppress the vibration amplitude and reduce oscillation. In addition, when the hard plate is impacted, it will also compress the air bag, and the air bag absorbs the impact energy through its own elastic deformation, further reducing the impact force on the cofferdam body. As the sliding plate moves, it will drive two connecting rods to move in opposite directions, and the rotation of the connecting rods pushes the top plate to move, compressing the fourth spring. The elastic deformation of the third spring and the fourth spring absorbs the vibration energy again, further isolating the transmission of vibration, thus achieving the effect of efficient shock absorption and buffering.

[0030] 4. The cofferdam device for water conservancy project construction of the present invention realizes the automatic adjustment function of the buffer mechanism by introducing a liquid level sensor and a control system. The liquid level sensor can monitor the change of the water level in real time and transmit the monitored water level data to the control system in the form of electrical signals. After receiving these signals, the control system will automatically analyze and judge the current water level situation according to the preset program, and then accurately control the running direction of the forward and reverse motor. The forward and reverse motor drives the forward and reverse rotation of the threaded rod, driving the connected buffer mechanism to move up and down in the vertical direction, which can ensure that the buffer mechanism is always in the best working position to meet the buffer requirements under different water level conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic structural diagram of a cofferdam device for water conservancy project construction according to an embodiment of the present invention;

[0032] Figure 2 is a schematic structural diagram of a reinforcement mechanism of a cofferdam device for water conservancy project construction according to an embodiment of the present invention;

[0033] Figure 3 is a schematic structural diagram of a buffer mechanism of a cofferdam device for water conservancy project construction according to an embodiment of the present invention;

[0034] Figure 4 is Figure 1 a partial enlarged schematic diagram at A in

[0035] Figure 5 is an installation schematic diagram of a buffer mechanism of a cofferdam device for water conservancy project construction according to another embodiment of the present invention;

[0036] Figure 6Schematic diagram of the hollow box structure of a cofferdam device for water conservancy project construction according to an embodiment of the present invention;

[0037] Figure 7 Schematic diagram of the buffer mechanism structure of a cofferdam device for water conservancy project construction according to an embodiment of the present invention;

[0038] Figure 8 Schematic flow chart of an operation method of a cofferdam device for water conservancy project construction according to an embodiment of the present invention.

[0039] In all the drawings, the same reference numerals denote the same technical features. Specifically: 1 - Cofferdam, 2 - Support column, 3 - Steel plate, 4 - Cone head, 5 - Groove, 6 - First fixing block, 7 - Second fixing block, 8 - Reinforcing rod, 9 - Support rod, 10 - Connecting block, 11 - First elastic plate, 12 - Empty slot, 13 - Pulley, 14 - First spring, 15 - Top block, 16 - Second elastic plate, 17 - Second spring, 18 - First damper, 19 - Through groove, 20 - Reversible motor, 21 - Slide groove, 22 - Slide block, 23 - Threaded rod, 24 - Hollow box, 241 - First transverse side wall, 242 - Second transverse side wall, 243 - Longitudinal side wall, 25 - Slide plate, 26 - Movable rod, 27 - Hard plate, 28 - Airbag, 29 - Third spring, 30 - Second damper, 31 - Top plate, 32 - Link rod, 33 - Baffle plate, 34 - Fourth spring. Detailed implementation manners

[0040] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0041] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0042] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, such descriptions of "first", "second", etc. are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between the various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0043] In this patent, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0044] Embodiment 1

[0045] As Figures 1-4As shown in the figure, an embodiment of the present invention provides a cofferdam device for water conservancy project construction, including a cofferdam 1, a buffer mechanism, a reinforcement mechanism, and a drive control mechanism. The buffer mechanism is arranged around the outside of the cofferdam 1, the reinforcement mechanism is arranged around the outside of the cofferdam 1 and below the buffer mechanism, and the drive control mechanism is arranged at the four corners of the cofferdam 1; the reinforcement mechanism provides additional support for the cofferdam, significantly enhancing the overall stability of the cofferdam. During the construction process, the cofferdam may face various complex working conditions, such as the impact of water flow, the change of soil pressure, and the vibration of construction machinery. The existence of the reinforcement mechanism can effectively prevent the cofferdam from tilting or collapsing, ensuring the smooth progress of the construction process. At the same time, the reinforcement mechanism can also improve the compressive capacity of the cofferdam, enabling it to withstand greater water pressure and soil pressure, thereby ensuring the safety of the cofferdam in a complex construction environment and providing a reliable guarantee for water conservancy project construction; when the water flow beats and impacts the cofferdam, or is impacted by floating logs and other objects in the water, the buffer mechanism can more effectively reduce the vibration transmission, reduce the impact force of the water flow or floating objects in the water on the cofferdam, reduce the risk of deformation and damage of the cofferdam, and play a good buffer protection role. Through the buffering effect of the buffer mechanism, the cofferdam can remain relatively stable under the impact of the water flow, extend its service life, reduce the maintenance cost, and at the same time provide a safer construction environment for construction workers. The setting of the drive control mechanism further improves the intelligence and automation level of the cofferdam device. It can drive the buffer mechanism to automatically lift according to the rise and fall of the water level, effectively solving the problem that the buffer mechanism cannot function due to the change of the water level in the traditional cofferdam device. In traditional water conservancy project construction, it is usually necessary to manually adjust the position of the buffer object according to the change of the water level. This method is not only time-consuming and laborious, but also in the case of rapid water level change, manual adjustment often cannot keep up in time, easily resulting in the failure of the buffer mechanism. However, the drive control mechanism in the present invention can monitor the water level change in real time and automatically adjust the position of the buffer mechanism to ensure that the buffer mechanism is always in the best working state, and the processing is more timely and effective, greatly improving the construction efficiency and the safety of the cofferdam.

[0046] As Figure 1As shown in the figure, the cofferdam 1 includes a plurality of support columns 2 and a plurality of steel plates 3. It consists of four sides, and support columns 2 are provided on both sides of each side. A conical head 4 is provided at the bottom of each support column 2, and vertical grooves 5 are provided along the length direction on the two adjacent side walls of each support column 2 facing the inside of the cofferdam 1. A steel plate 3 is provided between adjacent support columns 2, and the end of the steel plate 3 is embedded inside the groove 5, so as to realize the tight connection between the steel plate 3 and the support column 2. The plurality of support columns 2 and steel plates 3 enclose a rectangular frame structure, which can enhance the structural stability of the cofferdam 1, effectively resist external forces, reduce deformation and displacement, and can also evenly distribute external forces, improve the bearing capacity of the cofferdam, so that it can withstand greater water pressure and construction loads. The conical head 4 at the bottom of the support column 2 is designed to enable it to be inserted more firmly into the foundation, enhance the overall stability of the cofferdam 1, and effectively prevent the cofferdam 1 from tilting or displacing under the impact of water flow or external forces, providing a solid safety guarantee for the construction process. Secondly, by arranging the steel plate 3 between adjacent support columns 2 and embedding the end of the steel plate 3 into the groove 5 of the support column 2, the steel plate 3 is tightly combined with the support column 2. The cooperation between the steel plate 3 and the groove 5 simplifies the installation process, not only improves the construction efficiency, but also reduces the installation difficulty and cost.

[0047] As Figure 1 shown, the reinforcement mechanism includes a first fixing block 6, and the first fixing block 6 is fixedly installed on two adjacent side walls of the support column 2 facing the outside. A plurality of second fixing blocks 7 are provided on the outer wall of the steel plate 3. The first fixing block 6 and the second fixing block 7 are on the same horizontal line, and grooves are provided at the tops of the first fixing block 6 and the second fixing block 7. A reinforcing rod 8 is provided in the grooves at the tops of the first fixing block 6 and the second fixing block 7. This reinforcement mechanism can connect the steel plate 3 and the support column 2 into a whole, enhance the overall structural stability of the cofferdam 1, enable the cofferdam 1 to more effectively resist water flow impact, earth pressure and other external forces, reduce the risk of deformation or displacement of the cofferdam 1 during the construction process, improve the compressive capacity of the cofferdam 1, so that it can withstand greater water pressure and construction loads. This is particularly important for construction environments in deep water areas or with complex geological conditions, ensuring the safety and reliability of the cofferdam 1 under high water pressure and high load conditions, and can also optimize the force distribution of the cofferdam 1. The reinforcing rod 8 can evenly disperse external forces to the support column 2 and the steel plate 3, avoiding damage caused by excessive local stress, thereby extending the service life of the cofferdam 1, reducing the frequency of maintenance and repair, and reducing the construction cost.

[0048] Furthermore, the length of the reinforcing rod 8 is greater than the width of the cofferdam 1, and its thickness is less than the concave width of the first fixing block 6 and the second fixing block 7, which is convenient for the reinforcing rod 8 to be embedded into the grooves of the first fixing block 6 and the second fixing block 7.

[0049] Further, the reinforcing rod 8 is fixedly connected to the first fixing block 6 and the second fixing block 7 through a fastening device, and the fastening device includes but is not limited to bolts or buckles.

[0050] As Figure 1 shown, the drive control mechanism includes a forward and reverse motor 20 provided at the top of the support column 2. A chute 21 is formed on the side wall of the support column 2 adjacent to the outside. A threaded rod 23 is rotatably connected inside the chute 21. The output end of the forward and reverse motor 20 is fixedly connected to the top of the threaded rod 23. A slider 22 is rotatably connected to the outside of the threaded rod 23. The buffer mechanism is fixedly installed on the slider 22. The forward and reverse motor 20 drives the threaded rod 23 to rotate, driving the slider 22 to move up and down in the chute 21, thereby realizing automatic position adjustment of the buffer mechanism without manual intervention, greatly improving the construction efficiency and automation level. Secondly, the buffer mechanism is fixed on the slider 22 and can automatically adjust its height according to the water level change to ensure that it is always in the best working position, effectively absorbing the water flow impact force and external force, reducing the vibration and deformation of the cofferdam 1, and extending its service life. By dynamically adjusting the position of the buffer mechanism, the force distribution of the cofferdam 1 is optimized. Especially under the working conditions of large water level changes or strong water flow impact, the cofferdam 1 can maintain stability, reducing the risk of displacement or damage. In addition, the adaptability of the cofferdam 1 to complex hydrogeological conditions is improved. No matter how the water level changes, the buffer mechanism can maintain a good working state to ensure construction safety. The automatic adjustment function reduces the risk of failure or damage of the buffer mechanism caused by water level changes, extends its service life, and reduces the maintenance and replacement frequency. The automatic adjustment reduces the need for construction personnel to enter the cofferdam for manual operation, reducing the safety risk.

[0051] Furthermore, the drive control mechanism further includes a liquid level sensor and a control system. In the drive control mechanism, the liquid level sensor and the control system are key components for realizing automatic control. The liquid level sensor is responsible for monitoring the change of the water level in real time and converting these changes into electrical signals. It can quickly and accurately detect the rise and fall of the water level and transmit the data to the control system. The control system is equivalent to the "brain" of the entire mechanism. It receives the signals from the liquid level sensor, analyzes and processes them according to the preset control logic and algorithms. Subsequently, the control system will automatically adjust the operating state of the forward and reverse motor 20 according to the change of the water level, drive the threaded rod 23 to rotate, and then drive the slider 22 to move up and down in the chute 21, realizing the automatic adjustment of the position of the buffer mechanism. Through the coordinated work of the liquid level sensor and the control system, the drive control mechanism can quickly respond to the change of the water level. When the water level changes, the liquid level sensor will quickly capture this change and transmit the signal to the control system. The control system will adjust the operation of the forward and reverse motor 20 in a timely manner according to the preset program to ensure that the buffer mechanism is always in the best working position, enhancing the stability and adaptability of the cofferdam 1 and enabling it to better cope with complex hydrogeological conditions.

[0052] As Figures 1-4 shown, the buffer mechanism includes a support rod 9 and a first elastic plate 11. Both ends of the support rod 9 are fixedly connected with connecting blocks 10. The first elastic plate 11 is arc-shaped. Both ends of the first elastic plate 11 are provided with empty slots 12. A pulley 13 is rotatably connected inside the empty slots 12. The support rod 9 passes through the empty slots 12 at both ends of the first elastic plate 11, and the outer sidewall of the support rod 9 abuts against the pulley 13.

[0053] Furthermore, a second elastic plate 16 fixedly installed on the outer sidewall of the support rod 9 is provided between the support rod 9 and the first elastic plate 11. The second elastic plate 16 is arc-shaped. A plurality of top blocks 15 are fixedly installed on the sidewall of the first elastic plate 11 facing the second elastic plate 16, and the other end thereof faces the second elastic plate 16, enabling it to squeeze the second elastic plate 16 from multiple directions.

[0054] Furthermore, a through slot 19 is opened in the middle of the support rod 9. A first damper 18 is rotatably connected to the middle of the inner sidewall of the second elastic plate 16. The other end of the first damper 18 passes through the through slot 19 and is rotatably connected to the steel plate 3. Two second springs 17 are fixedly installed between the second elastic plate 16 and the support rod 9, and the two second springs 17 are respectively located on both sides of the first damper 18.

[0055] Furthermore, the connecting block 10 and the slider 22 are fixedly connected by bolts to fix the buffer mechanism on the slider 22.

[0056] Further, a first spring 14 is provided between the end of the first elastic plate 11 and the connecting block 10, which is used to absorb vibration and reduce the impact force when compressed.

[0057] Further, the first damper 18 is a hydraulic underwater damper, and its working principle is to use liquids such as water or oil as the medium. When vibration occurs, the flow of the liquid will generate resistance, and the vibration energy is consumed through this resistance, thereby achieving the purpose of vibration reduction.

[0058] Specifically, when the water flow beats, impacts or the buffer mechanism is impacted by floating logs in the water, the impact force or the impact force first acts on the first elastic plate 11, causing the first elastic plate 11 to undergo elastic deformation and absorb the impact energy; during the elastic deformation of the first elastic plate 11, the pulley 13 will slide and rotate outside the support rod 9, so that both sides of the first elastic plate 11 move in opposite directions along the outside of the support rod 9. The function of the pulley 13 is to enable the first elastic plate 11 to move quickly along the support rod 9 and improve its movement flexibility. When both sides of the first elastic plate 11 move towards both ends of the support rod 9, the first spring 14 will be compressed, causing the first spring 14 to be compressed and deformed, thereby absorbing vibration and reducing the impact force, playing a role of buffering and protection.

[0059] When the impact force of the water flow or the impact force of the log is relatively large, the first elastic plate 11 will undergo significant elastic deformation, and this deformation will drive the top block 15 to press the second elastic plate 16, and the second elastic plate 16 will then also undergo elastic deformation, thereby further absorbing the energy of the impact or collision. During the elastic deformation of the second elastic plate 16, the second spring 17 will be elastically deformed to further absorb the vibration energy. At the same time, the elastic deformation of the second elastic plate 16 will trigger the first damper 18 to generate a damping force, thereby consuming the vibration energy, effectively suppressing the vibration amplitude and reducing the oscillation, so as to play a significant role in vibration reduction and buffering in isolating the vibration transmission.

[0060] Embodiment 2

[0061] As Figure 5 shown, the embodiment of the present invention provides another cofferdam device for water conservancy project construction. In this embodiment, other contents are the same as those in Embodiment 1, except that the buffer mechanism includes a hollow box 24 and a hard plate 27. The hollow box 24 includes a first transverse side wall 241 and a second transverse side wall 242 arranged in parallel with each other, and longitudinal side walls 243 are fixedly installed between the two ends of the first transverse side wall 241 and the second transverse side wall 242.

[0062] Further, a sliding plate 25 is slidably connected inside the hollow box 24. The hard plate 27 is arranged outside the hollow box 24 and is parallel to the first lateral side wall 241. Two through holes are provided on the first lateral side wall 241. An activity rod 26 penetrating through the through holes on the first lateral side wall 241 is fixedly installed between the two ends of the hard plate 27 and the sliding plate 25. An airbag 28 is arranged between the hard plate 27 and the first lateral side wall 241. The outer surface of the airbag 28 is wrapped with a layer of high-elasticity and corrosion-resistant protective layer, which includes but is not limited to rubber, polyurethane or polyurethane composite materials. These materials have good energy absorption characteristics and can effectively absorb and disperse the impact force of water flow.

[0063] The two ends of the sliding plate 25 close to the ends are rotatably connected to the piston end of the second damper 28. The other end of the second damper 28 is rotatably connected to the second lateral side wall 242. A third spring 29 located between the two second dampers 30 on both sides is fixedly installed between the sliding plate 25 and the second lateral side wall 242.

[0064] Further, two mutually parallel baffles 33 are fixedly installed on the second lateral side wall 242 facing the inside of the hollow box 24. A plurality of fourth springs 34 are fixedly installed on the side walls of the baffles 33 facing the same direction. The other ends of the plurality of fourth springs 34 are fixedly installed with a top plate 31. The top plate 31 is slidably connected to the inner wall of the second lateral side wall 242. A connecting rod 32 is rotatably connected between each top plate 31 and the first lateral side wall 241.

[0065] Further, a buffer mechanism is arranged on each surface of the cofferdam 1. The buffer mechanism is fixedly connected to the sliders 22 on both sides of each surface through the second lateral side wall 242.

[0066] Specifically, when the water flow beats, impacts or is impacted by floating logs in the water on the buffer mechanism, the impact force or impact will first act on the hard plate 27. The hard plate 27 itself will not undergo elastic deformation, but will transmit the acting force to the activity rod 26, and then push the sliding plate 25 to slide inside the hollow box 24. During the sliding process of the sliding plate 25, it will compress the third spring 29. The third spring 29 absorbs vibration energy through its own elastic deformation, thereby effectively isolating the transmission of vibration and playing a role in vibration reduction and buffering. At the same time, the second damper 30 will work together to further suppress the vibration amplitude and reduce oscillation. On the other hand, when the hard plate 27 is impacted, it will also compress the airbag 28. The airbag 28 absorbs impact energy through its own elastic deformation, further reducing the impact force on the main body of the cofferdam 1. As the sliding plate 25 moves, it will drive the two connecting rods 32 to move in opposite directions. The rotation of the connecting rods 32 will push the top plate 31 to move and compress the fourth spring 34. The elastic deformation of the third spring 29 and the fourth spring 34 absorbs vibration energy again, further isolating the transmission of vibration, so as to achieve the effect of efficient vibration reduction and buffering.

[0067] Example 3

[0068] Combine Figures 1-3 , such as Figure 4 As shown, the present invention provides an operation method for a cofferdam device used in water conservancy project construction, which is realized by applying the described cofferdam device for water conservancy project construction. The specific steps are as follows:

[0069] S100: Align both sides of the steel plate 3 with the grooves 5 on the support columns 2 respectively, and insert it into them. By using the cone heads 4 at the bottom of the support columns 2, quickly drive the support columns 2 into the bottom of the water through mechanical hammering or other driving equipment to ensure that they are firmly embedded in the riverbed or bottom soil;

[0070] S200: Place the reinforcement rods 8 precisely in the grooves of the first fixing block 6 and the second fixing block 7, and fix them through buckles to further enhance the overall structural strength of the cofferdam 1;

[0071] S300: Install buffer mechanisms on each surface of the cofferdam 1, and fixedly install the buffer mechanisms on two sliders 22 on each surface of the cofferdam 1;

[0072] S400: When the water flow slaps, impacts or floating objects in the water hit the buffer mechanism, the buffer mechanism can absorb the impact energy and consume the vibration energy, thereby reducing the vibration amplitude to achieve the buffer protection effect on the cofferdam 1;

[0073] S500: When the water level changes, the liquid level sensor installed on the cofferdam 1 will monitor the water level change in real time and transmit the signal to the controller. The controller, according to the preset program, controls the forward and reverse motor 20 to drive the threaded rod 23 to rotate forward and backward. The rotation of the threaded rod 23 will drive the buffer mechanism to rise or fall through the slider 22 to adapt to the water level change so that the buffer mechanism is always in the best working position, continuously playing a buffer protection role on the cofferdam 1.

[0074] Those skilled in the art can easily understand that the above is only a preferred embodiment of the present invention and is not used to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cofferdam device for water conservancy project construction, characterized in that, It includes a cofferdam (1), a buffer mechanism arranged around the outside of the cofferdam (1), a reinforcement mechanism arranged around the outside of the cofferdam (1), and a drive control mechanism arranged at the four corners of the cofferdam (1); wherein, The cofferdam (1) includes a plurality of support columns (2) and a plurality of steel plates (3), which are composed of four faces, and support columns (2) are arranged on both sides of each face, and steel plates (3) are arranged between the support columns (2), and the plurality of support columns (2) and steel plates (3) enclose a rectangular frame structure; The reinforcement mechanism includes first fixing blocks (6) fixedly installed on two adjacent side walls of the support columns (2) facing the outside, a plurality of second fixing blocks (7) are arranged on the outer wall of the steel plate (3), and the first fixing blocks (6) and the plurality of second fixing blocks (7) on each face are connected by reinforcement rods (8); The drive control mechanism includes a forward and reverse motor (20) arranged on the top of the support column (2), a chute (21) is opened on the adjacent side wall of the support column (2) facing the outside, a threaded rod (23) is rotatably connected inside the chute (21), the output end of the forward and reverse motor (20) is fixedly connected to the top of the threaded rod (23), and a slider (22) is rotatably connected to the outside of the threaded rod (23); The buffer mechanism includes a support rod (9) and a first elastic plate (11), the first elastic plate (11) is arc-shaped, empty slots (12) are opened at both ends of the first elastic plate (11), the support rod (9) penetrates through the empty slots (12) at both ends of the first elastic plate (11), a second elastic plate (16) fixedly installed on the outer side wall of the support rod (9) is arranged between the support rod (9) and the first elastic plate (11), the second elastic plate (16) is arc-shaped, a plurality of top blocks (15) are fixedly installed on the side wall of the first elastic plate (11) facing the second elastic plate (16), a through slot (19) is opened in the middle of the support rod (9), and a first damper (18) is rotatably connected to the middle of the inner side wall of the second elastic plate (16), and the other end of the first damper (18) passes through the through slot (19) and is rotatably connected to the steel plate (3).

2. A cofferdam device for water conservancy project construction according to claim 1, characterized in that, A conical head (4) is arranged at the bottom of each support column (2), and vertical grooves (5) are arranged on two adjacent side walls of each support column (2) facing the inside of the cofferdam (1) along the length direction thereof, and the end of the steel plate (3) is embedded inside the groove (5), so as to realize the tight connection between the steel plate (3) and the support column (2).

3. A cofferdam device for water conservancy project construction according to claim 1, characterized in that, Grooves are arranged at the tops of the first fixing blocks (6) and the second fixing blocks (7), and the first fixing blocks (6) and the second fixing blocks (7) are on the same horizontal line, and the reinforcement rod (8) is embedded in the grooves of the first fixing blocks (6) and the second fixing blocks (7).

4. A cofferdam device for water conservancy project construction according to any one of claims 1-3, characterized in that, Connection blocks (10) are fixedly connected to both ends of the support rod (9), and the connection blocks (10) and the slider (22) are fixedly connected by bolts to realize the fixed installation of the buffer mechanism on the slider (22).

5. A cofferdam device for water conservancy project construction according to any one of claims 1-3, characterized in that, A pulley (13) is rotatably connected inside the empty slot (12), and the outer side wall of the support rod (9) abuts against the pulley (13).

6. A cofferdam device for water conservancy project construction according to any one of claims 1-3, characterized in that, A first spring (14) is fixedly installed between the end of the first elastic plate (11) and the connecting block (10). Two second springs (17) are fixedly installed between the second elastic plate (16) and the support rod (9), and the two second springs (17) are respectively located on both sides of the first damper (18).

7. A cofferdam device for water conservancy project construction according to claim 1, characterized in that, The buffer mechanism further includes a hollow box (24). The hollow box (24) includes a first transverse side wall (241) and a second transverse side wall (242) arranged in parallel. Longitudinal side walls (243) are fixedly installed between the two ends of the first transverse side wall (241) and the second transverse side wall (242). The buffer mechanism is fixedly connected to the sliders (22) on both sides of each face of the cofferdam (1) through the second transverse side wall (242); A sliding plate (25) is slidably connected inside the hollow box (24). A hard plate (27) is arranged outside it and is parallel to the first transverse side wall (241). Two through holes are provided on the first transverse side wall (241). An activity rod (26) passing through the through holes on the first transverse side wall (241) is fixedly installed between the two ends of the hard plate (27) and the sliding plate (25). An airbag (28) is arranged between the hard plate (27) and the first transverse side wall (241).

8. A cofferdam device for water conservancy project construction according to claim 7, characterized in that, The outer surface of the airbag (28) is wrapped with a layer of highly elastic and corrosion-resistant protective layer, and the protective layer includes but is not limited to rubber, polyurethane or polyurethane composite materials.

9. A cofferdam device for water conservancy project construction according to any one of claims 7 or 8, characterized in that, The two ends of the sliding plate (25) near the ends are rotatably connected to the piston end of the second damper (30). The other end of the second damper (30) is rotatably connected to the second transverse side wall (242). A third spring (29) located between the two second dampers (30) on both sides is fixedly installed between the sliding plate (25) and the second transverse side wall (242); The second transverse side wall (242) fixedly installs parallel baffles (33) towards the inside of the hollow box (24). A plurality of fourth springs (34) are fixedly installed on the side walls of the baffles (33) facing the same direction. The other ends of the plurality of fourth springs (34) are fixedly installed with a top plate (31). The top plate (31) is slidably connected to the inner wall of the second transverse side wall (242). A connecting rod (32) is rotatably connected between each top plate (31) and the first transverse side wall (241).

10. An operating method of a cofferdam device for water conservancy project construction, characterized in that, Implemented by using a cofferdam device for water conservancy project construction as described in any one of claims 1-9, including: S100: Align both sides of the steel plate (3) with the grooves (5) on the support columns (2) respectively, and insert them into the grooves. Using the cone heads (4) at the bottoms of the support columns (2), quickly drive the support columns (2) into the bottom of the water through mechanical hammering or other driving equipment to ensure that they are firmly embedded in the riverbed or bottom soil; S200: Precisely place the reinforcement rods (8) in the grooves of the first fixing block (6) and the second fixing block (7), and fix them through buckles to further enhance the overall structural strength of the cofferdam (1); S300: Install a buffer mechanism on each face of the cofferdam (1), and fixedly install the buffer mechanism on the two sliders (22) on each face of the cofferdam (1); S400: When water flow slaps, impacts or floating objects in the water hit the buffer mechanism, the buffer mechanism can absorb the impact energy and consume the vibration energy, thereby reducing the vibration amplitude to achieve the buffer protection effect on the cofferdam (1); S500: When the water level changes, the liquid level sensor installed on the cofferdam (1) will monitor the water level change in real time and transmit the signal to the controller. The controller controls the positive and negative motor (20) to drive the threaded rod (23) to rotate forward and backward according to the preset program. The rotation of the threaded rod (23) will drive the buffer mechanism to rise or fall through the slider (22) to adapt to the change of the water level so that the buffer mechanism is always in the best working position and continuously plays a buffer protection role on the cofferdam (1).

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