Construction piling platform and method for offshore photovoltaic power station

Abstract

The invention discloses a construction piling platform and method for an offshore photovoltaic power station, and relates to offshore piling equipment and a construction method.The construction piling platform comprises an engineering floating platform and piling devices, the left piling device, the right piling device and piling manipulators are arranged on the front portion of the engineering floating platform, and a floating platform guide part is arranged on the engineering floating platform and located between piles; a driving device and a positioning device are arranged on the engineering floating platform. The construction piling method comprises the following steps: connecting and positioning the engineering floating platform and the seabed; the piles are sunk into the seabed on the left and right sides of the floating platform guide part respectively; the engineering floating platform is moved forwards till the piling device is located at the next piling position; the piles sunk into the seabed are guided by the engineering floating platform on the left side and the right side of the floating platform guide part in the forward moving process of the engineering floating platform; and the steps are repeated, and the operation of sinking the next pair of piles into the seabed is completed till sinking of all the piles in the two rows is completed. The piling platform is simple in structure and convenient to use, can be matched with a construction method, can quickly position a piling position, and is high in working efficiency.

Description

Technical Field

[0001] The invention relates to offshore piling equipment and a construction method, in particular to a construction piling platform and a construction method for an offshore photovoltaic power station. Background Art

[0002] We know that the construction of an offshore photovoltaic power station requires a large number of piles to be driven in as the supporting foundation for solar panels. The existing offshore piling platform includes an engineering floating platform, an anchoring device and a piling device. The piling device is installed on the rear of the engineering floating platform and is used to drive piles into the seabed; the engineering floating platform serves as the installation base of the piling device and the bearing platform of the piles, and is usually implemented using a flat boat. There are at least 4 or even 8 anchoring devices installed on the engineering floating platform. The engineering floating platform uses a total station in conjunction with a satellite positioning system and uses an anchoring device to locate the piling position. Because the wind and waves on the sea surface cause the engineering floating platform to float and swing continuously, it needs to be adjusted and positioned repeatedly, which is cumbersome to operate and inefficient. (Note: At present, the construction of photovoltaic piles on some rivers, lakes and reservoirs is a temporary patchwork with extremely poor safety, and cannot be used for offshore construction.) Existing offshore pile drivers use hammer pile drivers. The pile frame is very high. In order to maintain stability, the hull base needs to be very large, and the displacement is usually more than a thousand tons. Even if the hull base is very large, its wind resistance is still poor. In strong winds and waves, the pile frame needs to be laid down or reinforced, and the pile hammer is usually also dropped to avoid accidents. The construction time is very short every day. Summary of the invention

[0003] The purpose of the present invention is to solve the above-mentioned deficiencies of the prior art and to provide a construction piling platform and method for an offshore photovoltaic power station which has a simple structure, is easy to use, can quickly locate the piling position, and has high working efficiency.

[0004] Another object of the present invention is to provide a construction piling platform and method for an offshore photovoltaic power station which has a relatively low pile frame height, strong wind resistance, no need to lower the pile frame in non-typhoon weather, and can be constructed around the clock.

[0005] The technical solution adopted by the present invention to solve the above-mentioned deficiencies in the prior art is: A construction piling platform for an offshore photovoltaic power station comprises an engineering floating platform and a piling device, characterized in that two left and right piling devices and a piling manipulator or a crane cooperating with the piling devices are arranged on the front of the engineering floating platform, a floating platform guide part cooperating with and guiding the piles (sunk to the seabed by the piling device) is arranged on the engineering floating platform behind the piling device, and the floating platform guide part is located between the (left and right) piles; the length of the floating platform guide part in the front-to-back direction is not less than one pile distance, and the engineering floating platform is provided with a driving device that can drive it to move forward and a positioning device that can be connected to the seabed.

[0006] The driving device described in the present invention is an underwater towing device; a transmission column that can slide vertically up and down is installed at the front (center) of the engineering floating platform, and the lower end of the transmission column is connected to the underwater towing device; the positioning device is provided with a guide slide rail on the frame of the underwater towing device, and a power head that can move freely up and down is provided on the guide slide rail. A pressurized lifting oil cylinder is provided between the power head and the frame of the underwater towing device, and the pressurized lifting oil cylinder can drive the power head to move freely up and down on the guide slide rail; a positioning drill bit that can drill into the seabed is installed on the power head. When it is necessary to connect the engineering floating platform to the seabed, the pressurized lifting oil cylinder works and drives the power head to press downward, and the power head works and drives the positioning drill bit to rotate and drill into the seabed, and the underwater towing device is fixed on the seabed, so as to realize the positioning connection between the engineering floating platform and the seabed. The specific structure is: the front side of the engineering floating platform is provided with (two upper and lower) guide sleeves, and the transmission column can be freely slid up and down and is installed in the guide sleeve; the lower end of the transmission column is connected to the underwater towing device through a ball joint pair. The underwater towing device is any one of a crawler walking device, a walking walking device, an underwater crawler chassis, an underwater crawler vehicle, an underwater tractor or an underwater robot.

[0007] The engineering floating platform described in the present invention includes a floating platform head and a floating platform guide part. The floating platform guide part is a strip-shaped floating platform with left and right sides parallel to each other. The width of the floating platform head in the left and right directions is greater than the width of the floating platform guide part in the left and right directions. The front end of the floating platform guide part is connected to the middle part of the rear side of the floating platform head to form a T-shaped engineering floating platform. The floating platform heads on the left and right sides of the floating platform guide part are respectively provided with piling devices. The piles sunk to the seabed by the two piling devices are located at the rear side of the floating platform head and the left and right sides of the floating platform guide part, and the distance between the piles and the left and right sides of the floating platform guide part is less than 10 cm, preferably 1-3 cm according to actual requirements. The piles that have sunk to the seabed limit the left and right sides of the engineering floating platform and limit its forward movement.

[0008] The positioning device described in the present invention is a sinking positioning hole that is vertically connected from top to bottom on the engineering floating platform, and the engineering floating platform is provided with a pile sinking device that sinks the positioning pile to the seabed through the sinking positioning hole. The engineering floating platform is provided with a pipe rolling machine, and the pile sinking device is a pipe rolling machine; the pipe rolling machine can quickly sink the circular tubular positioning pile to the seabed through the positioning hole to position the engineering floating platform. The driving device is a mounting slide that can slide freely forward and backward on the floating platform guide part of the engineering floating platform, and a driving mechanism is provided between the mounting slide and the engineering floating platform to drive the two to move relative to each other in the forward and backward directions.

[0009] The structures of the driving device and positioning device described in the present invention are as follows: a guide installation groove (long strip in the front-to-back direction) that runs through the middle of the floating platform guide part is provided, and a mounting slide that can slide freely forward and backward is provided on the guide installation groove; pulley grooves are provided on the left and right side walls of the guide installation groove, and pulleys that match the pulley grooves are installed on the left and right sides of the mounting slide; two sinking positioning holes arranged in the front-to-back direction are provided on the mounting slide, and a pile sinking device that sinks the positioning piles to the seabed through the two sinking positioning holes is provided on the mounting slide; a driving mechanism that can drive the mounting slide and the floating platform guide part to move relative to each other forward and backward is connected to the mounting slide. The pile sinking device is a pipe rolling machine; the pipe rolling machine can quickly sink the circular tubular positioning piles to the seabed through the positioning holes and connect the mounting slide to the seabed. The driving mechanism is as follows: a power source capable of bidirectional rotation is provided on the head of the floating platform in front of the installation slide, a transmission sprocket is provided on the power source, a guide sprocket is provided on the engineering floating platform behind the installation slide, the front side of the installation slide is connected to one end of the transmission chain, the other end of the transmission chain extends backward after bypassing the transmission sprocket, passes through the lower side of the installation slide, bypasses the guide sprocket and extends forward, and finally connects to the rear side of the installation slide. The power source is a hydraulic motor or motor with a self-locking function, such as a servo motor; the power source drives the transmission sprocket to rotate forward or backward, and the transmission chain pulls the installation slide to move forward or backward in the guide slot. The driving mechanism can also be that winches are provided on the engineering floating platforms in front of and behind the installation slide, and the traction ropes of the two winches are connected to the front and rear sides of the installation slide respectively. The driving mechanism can also be that an oil cylinder is provided on the engineering floating platform in front of or behind the installation slide, and the piston rod of the oil cylinder is connected to the front or rear side of the installation slide.

[0010] In the present invention, the side away from the installation slide is the outer side, and the side close to the installation slide is the inner side.

[0011] The present invention is further improved, the floating platform guide part includes a guiding body and a width adjusting device, the guiding body is a strip-shaped floating platform with left and right sides parallel to each other, and the width adjusting device is respectively hinged with at least two supporting swing arms on the left and right sides of the guiding body, the inner ends of the supporting swing arms are hinged to the guiding body, the outer end (left end) of the supporting swing arm on the left side of the guiding body is hinged with a left guide rod parallel to the left side of the guiding body, and the outer end (right end) of the supporting swing arm on the right side of the guiding body is hinged with a right guide rod parallel to the right side of the guiding body; the guiding body is provided with a left adjusting cylinder and a right adjusting cylinder for driving the left guide rod and the right guide rod to move and adjust the distance between the two; the cylinder body of the left adjusting cylinder is hinged to the left side of the guiding body, and the piston rod is hinged to the left guide rod or the supporting swing arm, and the cylinder body of the right adjusting cylinder is hinged to the right side of the guiding body, and the piston rod is hinged to the right guide rod or the supporting swing arm. The left adjustment cylinder and the right adjustment cylinder can respectively drive the left and right support swing arms to swing, and adjust the distance between the left guide rod and the right guide rod according to the pile distance of the piles sunk into the seabed as needed; the floating platform heads on the left and right sides of the floating platform guide part are respectively provided with left and right adjustable pile driving platforms, and the pile driving device is installed on the pile driving platform; the pile driving platform includes a pile driver mounting frame and a floating platform connecting frame, the floating platform connecting frame is arranged at the rear lower side of the pile driver mounting frame, the pile driving device is installed on the pile driver mounting frame, and the floating platform connecting frame is movably or detachably connected to the rear side and / or upper side of the floating platform head. The pile driver mounting frame described in the present invention is a mounting plate with a pile driving hole in the middle, and a vertical connecting plate that cooperates with the rear side of the floating platform head and is connected by bolts is arranged at the lower front side of the mounting plate, and at least two groups of vertical connecting plate mounting holes are arranged on the rear side of the floating platform head in the left and right directions. The vertical connecting plate can be selectively installed on different groups of vertical connecting plate mounting holes by bolts, and the left and right position of the mounting plate can be adjusted, thereby adjusting the left and right position of the pile driving device. Furthermore, the front side of the mounting plate is provided with a transverse connecting plate that matches the upper side of the floating platform head and is connected by bolts, and at least two groups of transverse connecting plate mounting holes are provided on the upper side of the floating platform head in the left and right directions; the transverse connecting plate strengthens the firmness of the connection between the mounting plate and the floating platform head. Further improvement, a lower support plate vertically connected to the outer side of the lower side of the mounting plate and the rear side of the vertical connecting plate is provided between the two to improve the bearing performance and make the construction more stable.

[0012] As a further improvement, the floating platform described in the present invention has side platforms detachably connected to the left and right sides of the floating platform head, which can increase the overall weight of the engineering floating platform, provide loading space and improve the stability of the engineering floating platform.

[0013] A construction piling method for an offshore photovoltaic power station, characterized in that it comprises the following steps: Step 1: Use a positioning device to connect the engineering floating platform to the seabed for positioning; Step 2: Use a pile driving device to sink (drive) piles into the seabed on the left and right sides of the floating platform guide part of the engineering floating platform; Step 3: Use the driving device and the positioning device to work together to move the engineering floating platform forward until the piling device is located at the next piling position; during the forward movement of the engineering floating platform, the piles that have sunk to the seabed are guided on the left and right sides of the floating platform guide part to prevent them from moving left and right; Step 4: Repeat steps 1-3 to sink the next pair of piles into the seabed until all the piles in two rows are sunk.

[0014] In the method, after step 2 is completed, the pile clamp of the pile driving device is separated from the pile, and then step 3 is performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 yes Figure 1 A partial enlarged view of point A.

[0016] Figure 3 yes Figure 1 Schematic diagram of the structure from above after removing the crane.

[0017] Figure 4 It is a second structural schematic diagram of the present invention.

[0018] Figure 5 yes Figure 4 Schematic diagram of the top view structure.

[0019] Figure 6 It is a schematic diagram of the connection structure between the piling device and the floating platform head in the present invention. DETAILED DESCRIPTION Example 1

[0020] like Figure 1 , Figure 2 , Figure 3 The construction piling platform for an offshore photovoltaic power station shown in the figure includes an engineering floating platform and a piling device 3. The engineering floating platform includes a floating platform head 12 and a floating platform guide 11. The floating platform guide 11 is a strip floating platform with left and right sides parallel to each other. The width of the floating platform head 12 in the left and right directions is greater than the width of the floating platform guide 11 in the left and right directions. The front end of the floating platform guide 11 is connected to the middle of the rear side of the floating platform head 12 to form a T-shaped engineering floating platform. Figure 3It can be seen that the front end of the floating platform guide part 11 is detachably connected to the rear side of the floating platform head 12 via a connecting seat and bolts; the two can be disassembled for transportation. The length of the floating platform guide part 11 in the front-to-back direction is 1.8 times the pile spacing. Two piling devices 3 are respectively arranged on the rear side of the floating platform head 12 on the left and right sides of the floating platform guide part 11; the piling device 3 is a static pile driving device, including a pile driving frame, a mounting seat, a pile driving cylinder and a pile clamp. The static pile driving device has a low height and strong wind resistance; it can also be any one of a vibration pile driving device or a hammer pile driving device, or a combination of any two of them. A crane 4 that cooperates with the piling device is provided in the center of the floating platform head 12. From Figure 3 It can be seen that a pile driver installation groove that runs vertically through is provided on the rear side of the floating platform head 12, and the pile driving device 3 is fixedly installed in the pile driver installation groove. The piles 1 sunk to the seabed by the two pile driving devices 3 are located at the rear side of the floating platform head and on the left and right sides of the floating platform guide part, and the distance between the piles and the left and right sides of the floating platform guide part does not exceed 2 cm, and the distance is as small as possible within the allowable error range; the piles 1 that have sunk to the seabed limit the left and right sides of the engineering floating platform, so that it can only move forward and not move left and right.

[0021] The engineering floating platform is provided with a driving device that can drive it to move forward and a positioning device that can be connected to the seabed. In this embodiment, the driving device is an underwater tractor 9; a guide sleeve 5 is provided at the front center of the floating platform head 12, and a transmission column 6 is installed in the guide sleeve 5 so that it can slide freely up and down; the lower end of the transmission column 6 is connected to the frame of the underwater tractor 9 through a ball joint pair. The underwater tractor 9 is any one of a crawler walking device, a walking walking device, an underwater tractor or an underwater robot. The positioning device is provided with a guide rail on the frame of the underwater towing device 9, and a power head 7 that can move freely up and down is provided on the guide rail. A pressurized lifting cylinder 10 is provided between the power head 7 and the frame of the underwater towing device, and the pressurized lifting cylinder 10 can drive the power head 7 to move freely up and down on the guide rail; a positioning drill bit 8 that can drill into the seabed is installed on the power head 7; when it is necessary to connect the engineering floating platform with the seabed, the pressurized lifting cylinder 10 works and drives the power head 7 to press downward, and the power head 7 works and drives the positioning drill bit 8 to rotate and drill into the seabed, so that the underwater towing device is fixed on the seabed, so as to realize the connection between the engineering floating platform and the seabed.

[0022] This embodiment is further improved, the left and right sides of the floating platform guide part 11 are respectively provided with a counterweight cargo part 2, the distance between the counterweight cargo part 2 and the floating platform guide part 11 is greater than the diameter of the pile 1, preferably 1.1 times, and can be guided in conjunction with the floating platform guide part, and the front end of the counterweight cargo part 2 is detachably connected to the rear side of the floating platform head 12 through a connecting seat and bolts. The counterweight cargo part 12 is used to increase the weight of the engineering floating platform, which is beneficial to the pile pressing work of the static pile pressing device, and piles can be placed on it without the need for a transport ship to follow all the time.

[0023] The offshore photovoltaic power station construction piling method completed by using the offshore photovoltaic power station construction piling platform provided in this embodiment includes the following steps: Step 1: At the planned piling position, the pressurized lifting cylinder works to drive the power head to press downward, and the power head works to drive the positioning drill bit to rotate and drill into the seabed, and the underwater towing device is fixed to the seabed to realize the connection between the engineering floating platform and the seabed positioning.

[0024] Step 2: Use a crane to load the two piles into the pile clamps of two piling devices respectively, and use the piling devices to press (sink) the two piles into the seabed.

[0025] Step 3: Control the pile clamp to open and lift up, and separate the pile driving device from the pile; the pressurized lifting cylinder works to drive the power head to pull upward, and the power head works in the reverse direction to drive the positioning drill bit to rotate in the reverse direction and rotate out of the seabed, thereby releasing the fixed relationship between the underwater traction device and the seabed, that is, releasing the connection between the engineering floating platform and the seabed; the underwater traction device is used to drive the engineering floating platform to move forward to the next piling position. During this process, the two piles 1 that have sunk into the seabed guide it on the left and right sides of the floating platform guide part to prevent it from moving left and right; Step 5: Repeat steps 1-3 to sink the next pair of piles into the seabed until all the piles in two rows are sunk.

[0026] The invention has the advantages of simple structure, convenient use, ability to quickly locate the piling position, high working efficiency, etc. Example 2

[0027] like Figure 4 , Figure 5 , Figure 6The construction piling platform for an offshore photovoltaic power station shown in the figure includes an engineering floating platform and a piling device 3. The engineering floating platform includes a floating platform head 12 and a floating platform guide part 11 that cooperates with the piles. The floating platform guide part 11 is a strip-shaped floating platform with left and right sides parallel to each other. The width of the floating platform head 12 in the left and right directions is greater than the width of the floating platform guide part 11 in the left and right directions. The front end of the floating platform guide part 11 is connected to the middle part of the rear side of the floating platform head 12 to form a T-shaped engineering floating platform; the length of the floating platform guide part 11 in the front-to-back direction is 2.6 times the pile distance of two piles in the front-to-back direction designed to sink to the seabed. At this time, the floating platform guide part 11 can cooperate with at least two pairs of piles in the front-to-back direction at any time. When the floating platform guide part moves forward, at least two piles in the front-to-back direction guide it, and the positioning in the left-to-right direction is accurate and the effect is better. A piling device 3 is respectively arranged on the floating platform head 12 on the left and right sides of the floating platform guide part 11, and a piling manipulator 13 cooperating with the piling device is arranged in the center of the floating platform head 12; the piling device is a static pile pressure device, and the piles sunk to the seabed by the two piling devices 3 are located on the rear side of the floating platform head and on the left and right sides of the floating platform guide part, and the distance between the piles and the left and right sides of the floating platform guide part is 1 cm; the piles that have sunk to the seabed limit the left and right sides of the engineering floating platform so that it can only move forward but not left and right.

[0028] The engineering floating platform is provided with a driving device that can drive it to move forward and a positioning device that can be connected to the seabed. The structure of the driving device and the positioning device is as follows: a guiding installation groove 23 that is through from top to bottom and is long in the front-to-back direction is provided in the middle of the floating platform guide part 11. The size of the guiding installation groove 23 in the front-to-back direction is greater than the distance between two piles in the front-to-back direction that are (expected) to sink into the seabed. In this embodiment, the size of the guiding installation groove 23 in the front-to-back direction is 1.5 times the distance between two piles in the front-to-back direction that are designed to sink into the seabed. A mounting slide 17 that can slide freely forward and backward is provided on the guiding installation groove 23; as can be seen from the figure, pulley grooves are provided on the left and right side walls of the guiding installation groove 23, and pulleys that match the pulley grooves are installed on the left and right sides of the mounting slide 17; two sinking positioning holes are provided on the mounting slide 17 in the front-to-back direction, and a pile sinking device is provided on the mounting slide to sink the positioning pile 15 to the seabed through the sinking positioning holes; a driving mechanism that can drive the mounting slide and the floating platform guide part to move relative to each other forward and backward is installed between the mounting slide 17 and the engineering floating platform. The pile sinking device is a pipe rolling machine 16, or a device such as a full-rotation drilling machine that can sink the positioning pile into the seabed. The positioning pile 15 is in the shape of a round tube, and the positioning pile 15 can slide freely up and down through the sinking positioning hole and be installed on the pipe rolling machine 16; the pipe rolling machine 16 can sink the positioning pile 15 through the positioning hole and the guide installation groove 23 into the seabed, connect the installation slide to the seabed, or lift the positioning pile upward and leave the seabed. The driving mechanism is: a power source 19 that can rotate in both directions is provided on the floating platform head in front of the installation slide 17, a transmission sprocket is provided on the output shaft of the power source 19, and a guide sprocket 14 is provided on the floating platform guide part 11 behind the installation slide 17. The front side of the installation slide 17 is fixedly connected to one end of the transmission chain 18, and the other end of the transmission chain 18 extends backward after bypassing the transmission sprocket, passes through the lower side of the installation slide, bypasses the guide sprocket 14, and then extends forward, and finally connects to the rear side of the installation slide. The power source 19 is a hydraulic motor or an electric motor with a self-locking function, such as a servo motor; the power source drives the transmission sprocket to rotate forward or reversely, and the transmission chain pulls the installation slide to move forward or backward in the guide slide. The driving mechanism can also be that the engineering floating platform in front of and behind the installation slide is respectively provided with a winch, and the traction ropes of the two winches are respectively connected to the front side and the rear side of the installation slide. The driving mechanism can also be that the engineering floating platform in front of or behind the installation slide is provided with an oil cylinder, and the piston rod of the oil cylinder is connected to the front side or the rear side of the installation slide.

[0029] The present embodiment is further improved, the floating platform guide part 11 includes a guiding body and a width adjusting device, the guiding body is a strip-shaped floating platform with left and right sides parallel to each other, the width adjusting device is respectively hinged with at least two supporting swing rods 20 on the left and right sides of the guiding body, the inner ends of the supporting swing rods 20 are hinged to the guiding body, the outer end (left end) of the supporting swing rod 20 on the left side of the guiding body is hinged with a left guide rod 21 parallel to the left side of the guiding body, and the outer end (right end) of the supporting swing rod on the right side of the guiding body is hinged with a right guide rod parallel to the right side of the guiding body; the guiding body is provided with a left adjusting cylinder 22 and a right adjusting cylinder for driving the left guide rod 21 and the right guide rod to move and adjust the distance between the two; the cylinder body of the left adjusting cylinder 22 is hinged to the left side of the guiding body, and the piston rod is hinged to the left guide rod 21, the cylinder body of the right adjusting cylinder is hinged to the right side of the guiding body, and the piston rod is hinged to the right guide rod or the supporting swing rod. The left adjustment cylinder 22 and the right adjustment cylinder can respectively drive the left and right support swing rods 20 to swing, and the distance between the left guide rod and the right guide rod can be adjusted according to the pile distance of the piles sunk to the seabed as required.

[0030] The floating platform head on the left and right sides of the floating platform guide part is respectively provided with a pile driving platform with adjustable left and right positions, and the pile driving device is installed on the pile driving platform; the pile driving platform includes a pile driver mounting frame and a floating platform connecting frame, the floating platform connecting frame is arranged at the rear lower side of the pile driver mounting frame, the pile driving device is installed on the pile driver mounting frame, and the floating platform connecting frame is movably or detachably connected to the rear side and / or upper side of the floating platform head. The pile driver mounting frame described in the present invention is a mounting plate 29 with a pile driving hole in the middle of the left and right directions, and a vertical connecting plate 32 is provided on the lower front side of the mounting plate 29 to cooperate with the rear side of the floating platform head 12 and connected by bolts, and at least two groups of vertical connecting plate mounting holes are provided on the rear side of the floating platform head 12 in the left and right directions. The vertical connecting plate 32 can be selectively installed on different groups of vertical connecting plate mounting holes by bolts, and the left and right positions of the mounting plate 29 can be adjusted, thereby adjusting the left and right positions of the pile driving device. Furthermore, the front side of the mounting plate 29 is provided with a transverse connecting plate 30 that cooperates with the upper side of the floating platform head 12 and is connected by bolts, and at least two groups of transverse connecting plate mounting holes are provided on the upper side of the floating platform head 13 in the left and right directions; the transverse connecting plate strengthens the firmness of the connection between the mounting plate and the floating platform head. Further improvement, a lower support plate 33 vertically connected to the two is provided between the outer side of the lower side of the mounting plate 29 and the rear side of the vertical connecting plate 32, which improves the bearing performance and makes the construction more stable.

[0031] from Figure 6It can be seen that the pile driving device described in the present invention includes a pile driving frame 18, a mounting seat 26, a pile driving cylinder 25 and a pile clamp 27. The mounting seat 26 can be freely slid up and down and installed in the pile driving frame 18, and the pile clamp 27 is installed on the lower side of the middle part of the mounting seat 26; the lower end of the pile driving frame 28 is connected to the mounting plate 29 through three anchor cylinders (anchor hydraulic cylinders), and the mounting seat 26 is provided with a downwardly extending chuck frame, and the pile clamp 27 is installed on the chuck frame. The chuck frame can drive the pile clamp downward through the pile driving hole and run to the lower side of the mounting plate, so as to statically press the uppermost end of the pile to the lower side of the mounting plate. The displacement of the engineering ship is usually more than 1,000 tons. The present invention can complete the construction piling work of the offshore photovoltaic power station with 200-300 tons. Further improvement, the floating platform described in the present invention is detachably connected to the left and right sides of the head of the floating platform. The side platform can increase the overall weight of the engineering floating platform, provide loading space and improve the stability of the engineering floating platform.

[0032] The present invention uses a piling device, the pile frame of which has a low height and strong wind resistance. In extreme weather, the pile frame does not need to be laid down, and construction can be carried out in all weather conditions.

[0033] The offshore photovoltaic power station construction piling method completed by using the offshore photovoltaic power station construction piling platform provided in this embodiment includes the following steps: Step 1: Use a pipe rolling machine to insert (sink) the positioning pile into the seabed; connect the engineering floating platform to the seabed and position it; Step 2: Use the pile driving manipulator to insert two piles into the pile clamps of the pile driving device respectively, and use the pile driving device to sink (drive) the piles into the seabed on the left and right sides of the floating platform guide part of the engineering floating platform respectively; Step 3: Turn on the pipe rolling machine to pull the positioning pile out of the seabed; the power source rotates forward to drive the installation slide to move forward in the guide installation groove by one pile distance (the distance between two piles in the front and rear direction); use the pipe rolling machine to insert (sink) the positioning pile into the seabed; the pile clamp of the pile driving device is opened and lifted up to separate from the pile; the power source rotates in the reverse direction to drive the engineering floating platform to move forward by one pile distance (until the pile driving device is located at the next piling position), and the piles on the left and right sides of the floating platform guide part that have sunk into the seabed during the forward movement of the engineering floating platform are guided to limit its position (to prevent it from moving left and right); Step 4: Repeat steps 2-3 to sink the next pair of piles into the seabed until all the piles in two rows are sunk.

[0034] The invention has the advantages of simple structure, convenient use, ability to quickly locate the piling position, high working efficiency, etc.

Claims

1. A construction piling platform for an offshore photovoltaic power station, comprising an engineering floating platform and a piling device, characterized in that: Two left and right piling devices and a piling manipulator or crane cooperating with the piling devices are provided on the front of the engineering floating platform. A floating platform guide part cooperating with the piles for guiding is provided on the engineering floating platform behind the piling devices. The floating platform guide part is located between the piles. The length of the floating platform guide part in the front-to-back direction is not less than one pile distance. The engineering floating platform is provided with a driving device that can drive it to move forward and a positioning device that can be connected to the seabed.

2. The construction piling platform for an offshore photovoltaic power station according to claim 1, characterized in that: The driving device is an underwater towing device; a transmission column that can slide vertically up and down is installed at the front of the engineering floating platform, and the lower end of the transmission column is connected to the underwater towing device; the positioning device is provided with a guide slide rail on the frame of the underwater towing device, and a power head that can move freely up and down is provided on the guide slide rail. A pressurized lifting cylinder is provided between the power head and the frame of the underwater towing device, and the pressurized lifting cylinder can drive the power head to move freely up and down on the guide slide rail; a positioning drill that can drill into the seabed is installed on the power head.

3. The construction piling platform for an offshore photovoltaic power station according to claim 1 or 2, characterized in that: The engineering floating platform includes a floating platform head and a floating platform guide part. The width of the floating platform head in the left and right direction is greater than the width of the floating platform guide part in the left and right direction. The front end of the floating platform guide part is connected to the middle part of the rear side of the floating platform head. Piling devices are respectively arranged on the floating platform heads on the left and right sides of the floating platform guide part.

4. The construction piling platform for an offshore photovoltaic power station according to claim 3, characterized in that: The structures of the driving device and the positioning device are as follows: a guide installation groove which passes through from top to bottom is provided in the middle of the floating platform guide part, and a mounting slide which can slide freely forward and backward is provided on the guide installation groove; two sinking positioning holes are provided on the mounting slide, and a pile sinking device which sinks the positioning piles to the seabed through the two sinking positioning holes is provided on the mounting slide; a driving mechanism which can drive the mounting slide and the floating platform guide part to move relative to each other forward and backward is connected to the mounting slide.

5. The construction piling platform for an offshore photovoltaic power station according to claim 4, characterized in that: The pile sinking device is a pipe rolling machine; the pipe rolling machine can quickly sink the positioning pile into the seabed through the positioning hole and connect the installation slide to the seabed.

6. The construction piling platform for an offshore photovoltaic power station according to claim 4, characterized in that: The driving mechanism is as follows: a power source is provided on the engineering floating platform in front of the installation slide, a transmission sprocket is provided on the power source, a guide sprocket is provided on the engineering floating platform behind the installation slide, the front side of the installation slide is connected to one end of the transmission chain, the other end of the transmission chain extends backward after bypassing the transmission sprocket, passes through the lower side of the installation slide, bypasses the guide sprocket and extends forward, and finally is connected to the rear side of the installation slide.

7. The construction piling platform for an offshore photovoltaic power station according to any one of claims 1 to 6, characterized in that: The floating platform guide part includes a guide body and a width adjustment device, the guide body is a strip-shaped floating platform parallel to each other on the left and right sides, and the width adjustment device is hinged on at least two supporting swing arms on the left and right sides of the guide body, the inner ends of the supporting swing arms are hinged to the guide body, and the outer ends of the supporting swing arms on the left side of the guide body are hinged with a left guide rod parallel to the left side of the guide body, and the outer ends of the supporting swing arms on the right side of the guide body are hinged with a right guide rod parallel to the right side of the guide body; the guide body is provided with a left adjustment cylinder and a right adjustment cylinder for driving the left guide rod and the right guide rod to move; the floating platform heads on the left and right sides of the floating platform guide part are respectively provided with left and right position adjustable piling platforms, and the piling device is installed on the piling platform frames; the piling platform frames include a pile driver mounting frame and a floating platform connecting frame, the floating platform connecting frame is arranged on the rear lower side of the pile driver mounting frame, the piling device is installed on the pile driver mounting frame, and the floating platform connecting frame is movably or detachably connected to the front side and / or upper side of the floating platform head.

8. The construction piling platform for an offshore photovoltaic power station according to claim 7, characterized in that: The pile driver mounting frame is a mounting plate with a piling hole in the middle, a vertical connecting plate matched with the front side of the floating platform head and connected by bolts is provided on the lower rear side of the mounting plate, and at least two groups of vertical connecting plate mounting holes are provided on the left and right directions of the front side of the floating platform head.

9. The construction piling platform for an offshore photovoltaic power station according to claim 7, characterized in that: The left and right sides of the floating platform head are respectively and detachably connected with side platforms.

10. A piling method for offshore photovoltaic power station construction, characterized in that: The steps include: Step 1: Use a positioning device to connect the engineering floating platform to the seabed for positioning; Step 2: Use a pile driving device to sink piles into the seabed on the left and right sides of the floating platform guide part of the engineering floating platform; Step 3: Use the driving device and the positioning device to work together to move the engineering floating platform forward until the piling device is located at the next piling position; during the forward movement of the engineering floating platform, the piles that have sunk to the seabed are guided on the left and right sides of the floating platform guide part; Step 4: Repeat steps 1-3 to sink the next pair of piles into the seabed until all the piles in two rows are sunk.

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