Continuous pile driving system for offshore platforms

Abstract

The application provides a continuous pile driving system for offshore platforms and relates to the technical field of offshore hose winches, and comprises a fixing frame, a hollow groove is formed in the middle of the surface of the left and right side plates of the fixing frame, two U-shaped connecting plates are respectively installed on the left and right sides of the bottom plate of the fixing frame, an auxiliary fixing mechanism is rotatably connected in the connecting plate, and a bearing seat is respectively installed on the upper end of the left and right side plates of the fixing frame. In the application, the protective cap is located directly above the locking screw, glue can be applied between the protective cap and the fixing seat to prevent external seawater and other substances from entering the mounting hole, the limiting strip in the protective cap is clamped between the second clamping groove and the first clamping groove, which can prevent the locking screw from loosening accidentally and further lock the locking screw, and the problems that the pile driving hose needs to reverse each pile driving joint and the bolt used for fixing is prone to loosening and external silt or seawater enters the bolt and the bolt hole and causes corrosion of the bolt are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the offshore hose winch technical field, especially to the offshore platform continuous pile driving system. BACKGROUND

[0002] With the global exploitation and utilization of marine resources deepening, offshore platforms play a vital role in many fields such as offshore oil exploitation, offshore wind power generation, cross-sea bridge construction, etc., and in the construction process of offshore platforms, the pile foundation construction is a key link, and its quality is directly related to whether the offshore platform can be safely and stably operated subsequently.

[0003] However, the existing pile driving system still has the following two deficiencies:

[0004] Firstly, during the pile driving operation, the pile leg moves up and down relative to the pile chamber, so the pile driving hose needs to be reversed for each pile driving joint, which requires a lot of manpower and time, which not only makes the entire pile driving operation time-consuming, but also seriously delays the construction period of the offshore platform, increases the cost of manpower and material resources, and reduces the construction efficiency;

[0005] Secondly, the sea is large and the fixed frame will vibrate during pile driving, at which time the bolts used for fixing are prone to loosening, and the external sand or seawater entering the bolt and the screw hole will also cause corrosion of the bolt. SUMMARY

[0006] Therefore, the present application provides an offshore platform continuous pile driving system to solve the problems that the pile driving hose needs to be reversed for each pile driving joint, and the bolts used for fixing are prone to loosening, and the external sand or seawater entering the bolt and the screw hole will cause corrosion of the bolt.

[0007] The present application provides an offshore platform continuous pile driving system, which specifically includes: a fixed frame;

[0008] The left and right side plates of the fixed frame are provided with a hollow groove in the middle of the surface, and the bottom plate of the fixed frame is provided with two U-shaped connecting plates on the left and right sides, respectively, and the inside of the connecting plate is rotatably connected with an auxiliary fixing mechanism, and the upper end of the left and right side plates of the fixed frame is respectively provided with a bearing seat, and the upper end surface of the left side plate of the fixed frame is further provided with a fixed plate;

[0009] A hollow shaft is rotatably connected between the two bearing seats, and one rotating joint is installed at each end of the hollow shaft, and a first water pipe is installed at the end of the rotating joint;

[0010] A driving motor is installed on the outer end surface of the fixed plate, and a driving shaft is drivingly connected to the front end of the driving motor, and a driving gear is fixedly installed at the end of the driving shaft;

[0011] The lifting plate is a long strip structure, and a connecting horizontal plate is arranged at the left and right ends of the lifting plate respectively.

[0012] The wire coil is provided with a hollow sleeve at the middle position.

[0013] Further, the auxiliary fixing mechanism comprises:

[0014] The fixing seat is rotationally connected to the inside of the connecting plate, and the middle position of the fixing seat is provided with a mounting hole.

[0015] Further, the auxiliary fixing mechanism further comprises:

[0016] The locking screw is threadedly connected to the inside of the mounting hole, and the upper end surface of the locking screw is provided with a second clamping groove.

[0017] The protective cap is located directly above the locking screw, and the inner end surface of the protective cap is fixedly provided with a limiting strip.

[0018] Further, the bottom plate surface of the fixing frame is provided with two fixed side plates, the two ends of the fixed side plate are located in the air slot on the surface of the fixing frame, and the inner end surface of the fixed side plate is provided with three vertical sliding grooves.

[0019] Further, the left and right end surfaces of the fixed side plate are respectively provided with a first through hole, and the surface of the connecting horizontal plate is provided with two second through holes.

[0020] Further, the lower end surface of the lifting plate is fixedly provided with three compression springs, and the lower end surface of the compression spring is fixedly connected with the bottom plate of the fixing frame.

[0021] Further, the outer end surface of the sleeve in the wire coil is fixedly provided with a driven gear, and the driven gear and the driving gear are connected through a chain.

[0022] Further, the outer end surface of the wire coil is uniformly provided with a rubber strip, and the inner end surface of the pressing plate is uniformly provided with a groove.

[0023] The present application provides a continuous pile driving system for offshore platforms, which has the following advantages:

[0024] 1. The limiting block is slidably installed in the vertical slide groove, which allows the lifting plate to move up and down along the fixed side plate. When the first through hole is aligned with the second through hole on the connecting horizontal plate, the position of the lifting plate can be fixed by passing the limiting rod through the two. When it is necessary to fix the coil, the limiting rod in the first and second through holes can be removed. Under the elastic force of the compression spring, the lifting plate will move upward, so that the pressure plate contacts the outer end face of the coil, which plays a stabilizing role for the coil.

[0025] 2. The inner end face of the pressure plate is provided with a groove, and the outer end face of the coil is evenly equipped with rubber strips, so that when the pressure plate is in close contact with the coil, the braking effect on the coil can be improved.

[0026] 3. The hollow shaft is rotatably connected between two bearing seats and can rotate flexibly around its axis. The rotary joints at both ends are connected to the hollow shaft on one side and to the first water pipe on the other. The special structure of the rotary joints allows the medium in the first water pipe to be smoothly transported while the hollow shaft rotates, without leakage or blockage due to the rotation of the shaft. This ensures that the pile driving medium can be stably transmitted to the corresponding working position, providing the necessary conditions for the pile driving operation.

[0027] 4. The surface of the fixed base has mounting holes. Bolts pass through the mounting holes and are wedged into the top of the pile fixing chamber, which can play an auxiliary role in fixing the fixed frame. During continuous pile driving operations, the fixed frame itself will vibrate. At this time, the protective cap is located directly above the locking screw. Adhesive can be applied between the protective cap and the fixed base to prevent external substances such as seawater from entering the mounting hole. The limiting strip inside the protective cap is engaged between the second slot and the first slot, which can prevent the locking screw from loosening accidentally and play a further locking role. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0029] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0030] In the attached diagram:

[0031] Figure 1 This is a schematic diagram of the overall device structure of the present invention;

[0032] Figure 2 This is a cross-sectional view of the fixing frame structure of the present invention;

[0033] Figure 3 This is a schematic diagram of the connection structure between the fixing frame and the bearing seat of the present invention;

[0034] Figure 4It is the fixed frame and the pressing plate connecting structure schematic diagram of the application;

[0035] Figure 5 It is the hollow shaft, rotary joint and first water pipe structure schematic diagram of the application;

[0036] Figure 6 It is the fixed side plate and the lifting plate connecting structure schematic diagram of the application;

[0037] Figure 7 It is the pressing plate, lifting plate and compression spring exploded structure schematic diagram of the application;

[0038] Figure 8 It is the fixed seat and the locking screw structure schematic diagram of the application;

[0039] Figure 9 It is the protective cap and the limiting strip structure schematic diagram of the application;

[0040] Figure 10 It is the operation system frame structure schematic diagram of the application.

[0041] The list of reference signs is as follows:

[0042] 1, fixed frame; 101, hollow groove; 102, bearing seat; 103, fixed plate; 104, fixed side plate; 1041, vertical sliding groove; 1042, first through hole; 105, connecting plate; 2, hollow shaft; 201, rotary joint; 2011, first water pipe; 3, driving motor; 301, driving gear; 4, lifting plate; 401, connecting cross plate; 4011, second through hole; 402, limiting block; 403, compression spring; 5, pressing plate; 501, recess; 6, fixed seat; 601, mounting hole; 6011, first clamping groove; 7, locking screw; 701, second clamping groove; 8, protective cap; 801, limiting strip; 9, wire reel; 901, driven gear; 902, rubber strip. DETAILED DESCRIPTION

[0043] The technical solutions of the embodiments of the application will be described clearly and completely in the following with reference to the drawings of the specific embodiments of the application.

[0044] Embodiment one: please refer to Figures 1 to 10 As shown in the figure:

[0045] The application provides a continuous pile driving system for offshore platforms, which comprises a fixed frame 1;

[0046] The middle position of the left and right side plate surfaces of the fixing frame 1 is provided with a hollow groove 101, the fixing frame 1 is fixedly installed on the top of the pile chamber, the bottom plate of the fixing frame 1 is provided with two U-shaped connecting plates 105 on the left and right sides, the inside of the connecting plate 105 is rotatably connected with an auxiliary fixing mechanism, the left and right side plates of the fixing frame 1 are respectively provided with a bearing seat 102 at the upper end, and the left side plate of the fixing frame 1 is further provided with a fixed plate 103 on the upper end surface;

[0047] The hollow shaft 2 is rotatably connected between the two bearing seats 102, and one end of the hollow shaft 2 is provided with a rotary joint 201.

[0048] The driving motor 3 is installed on the outer end surface of the fixed plate 103, and the front end of the driving motor 3 is drivingly connected with a driving shaft, and the end of the driving shaft is fixedly installed with a driving gear 301.

[0049] The lifting plate 4 is in a strip-shaped structure, and the left and right ends of the lifting plate 4 are respectively provided with a connecting plate 401, and the upper end surface of the lifting plate 4 is fixedly installed with two pressing plates 5.

[0050] The wire disc 9 is provided with a hollow sleeve at the middle position, and the sleeve is sleeved on the outside of the hollow shaft 2.

[0051] The auxiliary fixing mechanism comprises a fixed seat 6 rotatably connected in the inside of the connecting plate 105, an installation hole 601 is formed in the middle position of the fixed seat 6, a thread is formed in the inside of the installation hole 601, and three first clamping grooves 6011 are formed in the inside circumference of the installation hole 601 in a ring shape; a locking screw 7 is threadedly connected in the inside of the installation hole 601, a second clamping groove 701 is formed in the upper end surface of the locking screw 7; a protective cap 8 is located directly above the locking screw 7, a limiting strip 801 is fixedly installed on the inner end surface of the protective cap 8, and when the second clamping groove 701 on the surface of the locking screw 7 is aligned with the first clamping groove 6011 in the inside of the installation hole 601, the limiting strip 801 is clamped in the first clamping groove 6011 and the second clamping groove 701.

[0052] By adopting the above scheme, the protective cap 8 is located directly above the locking screw 7, the protective cap 8 and the fixed seat 6 can be coated with glue, the outside seawater and other substances can be prevented from entering the installation hole 601, the limiting strip 801 in the inside of the protective cap 8 is clamped between the second clamping groove 701 and the first clamping groove 6011, so that the locking screw 7 can be prevented from loosening accidentally, and a further locking effect is achieved.

[0053] Two fixed side plates 104 are mounted on the surface of the bottom plate of the fixed frame 1, the two ends of the fixed side plate 104 are located in the hollow groove 101 on the surface of the fixed frame 1, and three vertical sliding grooves 1041 are formed in the inner end face of the fixed side plate 104.

[0054] The left and right end surfaces of the fixed side plate 104 are respectively provided with a first through hole 1042, and the surface of the connecting horizontal plate 401 is provided with two second through holes 4011; when the first through hole 1042 is aligned with the second through hole 4011, the bolt passes through the first through hole 1042 and the second through hole 4011 to fix the lifting plate 4.

[0055] The lower end face of the lifting plate 4 is fixedly provided with three compression springs 403, the lower end face of the compression spring 403 is fixedly connected with the bottom plate of the fixed frame 1, and in use, after the limiting rod in the first through hole 1042 and the second through hole 4011 is taken out, the compression spring 403 can provide power for the upward movement of the lifting plate 4, so that the pressing plate 5 at the upper end of the lifting plate 4 can be in close contact with the wire reel 9.

[0056] The outer end face of the sleeve in the middle of the wire reel 9 is fixedly provided with a driven gear 901, the driven gear 901 and the driving gear 301 are connected through a chain, and the outer end face of the wire reel 9 is uniformly provided with a rubber strip 902, and the inner end face of the pressing plate 5 is uniformly provided with a groove 501, so that after the pressing plate 5 is in close contact with the wire reel 9, the cooperation of the rubber strip 902 and the groove 501 can improve the braking effect.

[0057] Embodiment two: the offshore platform continuous pile driving system provided by the present application is based on embodiment one, as shown in the figure, further comprising: Figures 1-10 The control box can be installed at the top of the pile fixing chamber for convenient observation and operation, and the personnel operation is convenient, the control box is provided with a manual and automatic switching switch, in the manual state, the lifting button is pressed, the hose in the winch is released, the stop button is pressed, the operation is stopped, the drop button is pressed, the hose in the winch is retracted, and the stop button is pressed, the operation is stopped; in the automatic state, the lifting or lowering signal of the pile driving platform is transmitted to the winch control system, the corresponding action is made automatically following the lifting of the pile driving platform, and before operation, the power switch button needs to be pressed first, at this time the control system of the winch can be connected to the power supply, and under the condition of connecting to the power supply, if the power switch button is pressed again, the power supply can be disconnected at this time.

[0058] Embodiment three: the offshore platform continuous pile driving system provided by the present application is based on embodiment one, as shown in the figure, further comprising: Figures 1-10As shown, the offshore platform continuous pile driving system is mainly composed of a fixing frame 1, a hollow shaft 2, a driving motor 3, a lifting plate 4, a wire reel 9, and an auxiliary fixing mechanism, etc. The fixing frame 1 serves as a basic support structure, and a bearing seat 102 is installed at the upper end of the fixing frame 1 to realize the rotary connection of the hollow shaft 2. In addition, the fixing frame 1 is also provided with related structures for auxiliary fixing and cooperation with other components, such as a connecting plate 105, a fixed side plate 104, etc. The rotary joints 201 at both ends of the hollow shaft 2 are connected with a first water pipe 2011 for related functions such as medium conveying. The driving motor 3 provides power for the rotation of the wire reel 9 through the driving gear 301 and the driven gear 901 of the wire reel 9 by means of chain transmission. The lifting plate 4 realizes up-and-down sliding by cooperating with the vertical sliding slot 1041 of the fixed side plate 104 through its limiting block 402. When the pressing plate 5 at the upper end of the lifting plate 4 is in contact with the wire reel 9, it can play a fixing and limiting role on the wire reel 9.

[0059] The specific use and role of the embodiment are as follows: in the embodiment, the fixing frame 1 is fixedly installed on the top of the pile fixing chamber, thereby providing a stable installation base for the whole pile driving system and ensuring that the components of the system can reliably operate in the special environment of the offshore platform; the fixed side plate 104 cooperates with the lifting plate 4, the limiting block 402 is slidingly clamped in the vertical sliding groove 1041, which enables the lifting plate 4 to move up and down along the fixed side plate 104; when the first through hole 1042 is aligned with the second through hole 4011 on the connecting transverse plate 401, the limiting rod is inserted through the two holes, thereby fixing the position of the lifting plate 4; when it is necessary to fix the wire reel 9, the limiting rod in the first through hole 1042 and the second through hole 4011 is removed; under the elastic force of the compression spring 403, the lifting plate 4 moves upward, so that the pressing plate 5 contacts the outer end surface of the wire reel 9, thereby stably fixing the wire reel 9; the inner end surface of the pressing plate 5 is provided with a groove 501, and the outer end surface of the wire reel 9 is uniformly provided with rubber strips 902, thereby improving the braking effect on the wire reel 9; the hollow shaft 2 is rotatably connected between the two bearing seats 102 and can rotate around the axis, one end of the hollow shaft 2 is connected with the rotary joint 201, and the other end of the hollow shaft 2 is connected with the first water pipe 2011; the special structure of the rotary joint 201 allows the first water pipe 2011 to smoothly convey the medium while the hollow shaft 2 rotates, thereby preventing leakage or blockage and ensuring that the pile driving medium can be stably transmitted to the corresponding working position, thereby providing necessary conditions for the pile driving operation; the driving motor 3 is installed on the outer end surface of the fixed plate 103; after the driving motor 3 is started, the driving shaft connected with the front end of the motor drives the driving gear 301 to rotate; the driving gear 301 is connected with the driven gear 901 through a chain; according to the gear transmission principle, the driving motor 3 can drive the wire reel 9 to rotate around the hollow shaft 2, thereby realizing the functions of winding and unwinding the wire reel 9 and providing power support for the winding and unwinding operation of the rubber pipe during the pile driving operation; the sleeve in the middle of the wire reel 9 is sleeved outside the hollow shaft 2; under the driving of the driving motor 3, the wire reel 9 rotates around the hollow shaft 2; before or after the pile driving operation starts, the wire reel 9 can orderly wind or unwind the rubber pipe, thereby facilitating the storage and management of the rubber pipe and providing a suitable length and position of the rubber pipe for the pile driving; the fixing seat 6 is provided with an installation hole 601; the bolt passes through the installation hole 601 and is wedged into the top of the pile fixing chamber, thereby achieving the auxiliary fixing of the fixing frame 1; during the continuous pile driving operation, the fixing frame 1 itself vibrates; at this time, the protective cap 8 is located above the locking screw 7; the protective cap 8 and the fixing seat 6 are coated with glue, thereby preventing seawater and other substances from entering the installation hole 601; the limiting strip 801 in the protective cap 8 is clamped between the second clamping groove 701 and the first clamping groove 6011, thereby preventing the locking screw 7 from loosening and achieving further locking.

Claims

1. A continuous pile driving system for offshore platforms, characterized in that, include: A fixing frame (1) has a slot (101) in the middle of the left and right side plates. Two fixing side plates (104) are installed on the bottom plate of the fixing frame (1). The two ends of the fixing side plates (104) are located in the slot (101) on the surface of the fixing frame (1). Two U-shaped connecting plates (105) are installed on the left and right sides of the bottom plate of the fixing frame (1). An auxiliary fixing mechanism is rotatably connected inside the connecting plate (105). The auxiliary fixing mechanism includes a fixing seat (6). The fixing seat (6) is rotatably connected inside the connecting plate (105). An installation hole (601) is opened in the middle of the fixing seat (6). The installation hole (601) is threaded inside. (601) has three first slots (6011) in a ring shape on its inner circumference; a locking screw (7) is threaded into the mounting hole (601), and a second slot (701) is provided on the upper surface of the locking screw (7); a protective cap (8) is located directly above the locking screw (7), and a limit strip (801) is fixedly installed on the inner end face of the protective cap (8). When the second slot (701) on the surface of the locking screw (7) is aligned with the first slot (6011) inside the mounting hole (601), the limit strip (801) is engaged in the first slot (6011) and the second slot (701). The upper ends of the left and right side plates of the fixing bracket (1) are respectively equipped with a A bearing seat (102), and a fixing plate (103) is also installed on the upper surface of the left side plate of the fixing frame (1); a hollow shaft (2), which is rotatably connected between the two bearing seats (102), and a rotary joint (201) is installed at each end of the hollow shaft (2), and a first water pipe (2011) is installed at the lower end of the rotary joint (201); a drive motor (3), which is installed on the outer end face of the fixing plate (103), and a drive shaft is connected to the front end of the drive motor (3), and a drive gear (301) is fixedly installed at the end of the drive shaft; a lifting plate (4), which is a long strip structure, and a fixing plate (103) is installed at the left and right ends of the lifting plate (4). A connecting horizontal plate (401) is installed. Three compression springs (403) are fixedly installed on the lower end face of the lifting plate (4). The lower end face of the compression springs (403) is fixedly connected to the base plate of the fixing frame (1). Two pressure plates (5) are fixedly installed on the upper end face of the lifting plate (4). The upper end face of the pressure plate (5) is an arc structure. A first through hole (1042) is opened on the left and right end surfaces of the fixed side plate (104). Two second through holes (4011) are opened on the surface of the connecting horizontal plate (401). When the first through hole (1042) and the second through hole (4011) are aligned, the limiting rod passes through the first through hole (1042) and the second through hole (4011) to fix the lifting plate (4).The coil (9) has a hollow sleeve in the middle, which is fitted onto the outside of the hollow shaft (2). Rubber strips (902) are evenly installed on the outer end face of the coil (9), and grooves (501) are evenly installed on the inner end face of the pressure plate (5).

2. The continuous pile driving system for offshore platforms as described in claim 1, characterized in that: The inner end face of the fixed side plate (104) is provided with three vertical sliding grooves (1041), and three limiting blocks (402) are respectively installed at the front and rear ends of the lifting plate (4). The limiting blocks (402) are slidably locked in the vertical sliding grooves (1041) on the surface of the fixed side plate (104).

3. The continuous pile driving system for offshore platforms as described in claim 1, characterized in that: A passive gear (901) is fixedly installed on the outer end face of the sleeve in the middle of the coil (9), and the passive gear (901) is connected to the active gear (301) by a chain.

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