Lever construction device for offshore temporary quay for upper assembly of floating bodies

Abstract

The application discloses a lever construction device for offshore temporary wharf to assemble a floating body upper part, which comprises: a lever construction device for limiting the swing of a floating body foundation on the sea surface by a crane cable. The crane provides upward pulling force for the floating platform and the floating body foundation fixedly connected with the floating platform through the cable. The floating platform can only rotate up and down relative to the auxiliary mechanism through the lever. The lever can control the left and right swing of the floating platform through the auxiliary mechanism. The problem that the crane cable easily swings with the floating body foundation on the sea surface when being blown by the sea wind is solved.

Description

Technical Field

[0001] This invention relates to a lever construction device for assembling the upper part of a floating structure at a nearshore temporary dock, belonging to the field of sea breeze assembly construction technology. Background Technology

[0002] Offshore wind turbine equipment modules are pre-assembled and then hoisted onto the floating foundation. To prevent excessive local stress on the floating foundation 9, which could cause it to sink or tilt, the floating foundation 9, which floats on the sea surface 10, needs to be hoisted using a crane 12 installed on the dock 11 to provide upward tension. See [link / details]. Figure 6 As shown.

[0003] When the crane's hoisting cable is connected to the floating foundation, the crane's hoisting cable can easily cause the floating foundation to sway on the sea surface when blown by the sea breeze. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a lever construction device for assembling the upper part of a floating structure at a near-shore temporary dock.

[0005] The present invention is achieved through the following technical solutions.

[0006] This invention provides a lever construction device for assembling the upper part of a floating structure at a near-shore temporary dock, comprising: A lever construction device that restricts the swinging of the crane cable carrying the floating foundation on the sea surface.

[0007] When in use, it is a fixed support, on which a connecting seat for expanding the area is fixed. An auxiliary mechanism is installed on the connecting seat, and a lever is rotatably hinged to the auxiliary mechanism. The middle part of the lever can only rotate up and down relative to the auxiliary mechanism. The auxiliary mechanism restricts the forward and backward displacement of the lever and controls the left and right swing of the lever. The lever end is fixedly connected to a bracket via a connecting arm, and a support mechanism is sleeved on the bracket; a floating platform for connecting to the floating body foundation is fixed on the top of the support mechanism, the floating platform is fixedly connected to the floating body foundation, and the floating platform is connected to the crane cable.

[0008] The auxiliary mechanism includes a housing fixedly connected to the connecting seat, a rotatable connecting shaft installed inside the housing, a worm gear fixedly connected to the bottom of the connecting shaft, the worm gear meshing with a worm, the worm being connected to a motor, and the motor housing being fixed to the connecting seat.

[0009] The top of the connecting shaft is fixed with a base, and the base has a groove to accommodate the lever. The lever can only rotate up and down in the groove of the base by means of a fixing nut. The motor drives the worm gear to rotate, the worm gear drives the worm gear at the bottom of the connecting shaft to rotate, the connecting shaft drives the base to rotate, and the base drives the lever to rotate and swing left and right.

[0010] The support mechanism includes a sleeve that is below the sea surface during use, and the inside of the sleeve is hollow. The top of the sleeve has a vent for seawater to enter its interior.

[0011] A fixing block is fixed inside the sleeve located below the inlet. The fixing block is provided with a fixing block for liquid flow. A first limiting ring and a second limiting ring are fixed inside the sleeve above and below the fixing block, respectively. A second spring is installed between the fixed block and the first limiting ring. The top of the second spring contacts the first limiting ring through the second piston. A first spring is installed between the fixed block and the second limiting ring. The bottom of the first spring contacts the second limiting ring through the first piston. The second piston and the first piston can slide inside the sleeve. The space between the second piston and the first piston forms a piston space, which contains liquid water.

[0012] The second piston has a float mounted on its top, and a connecting post is fixedly mounted on the float. The top of the connecting post can slide through the top of the sleeve, and the connecting post is fixedly connected to the bottom surface of the floating platform. A rotating shaft is fixedly installed on the outer side of the top of the sleeve. The rotating shaft is sleeved with the bracket, and the bracket can only rotate up and down relative to the sleeve with the rotating shaft as the axis of rotation.

[0013] The beneficial effects of this invention are as follows: the crane provides upward pulling force to the floating platform and the floating body foundation fixedly connected to the floating platform through the lifting cable. The floating platform can only rotate up and down relative to the auxiliary mechanism through the lever. The lever can be controlled by the auxiliary mechanism to swing the floating platform left and right, which solves the problem that the crane lifting cable easily swings the floating body foundation on the sea surface when blown by sea wind. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the lever construction device of the present invention; Figure 2 This is a schematic diagram of the split structure of the lever construction device of the present invention; Figure 3 This is a cross-sectional structural schematic diagram of the auxiliary mechanism of the present invention; Figure 4 This is a cross-sectional structural schematic diagram of the support mechanism of the present invention; Figure 5 This is a schematic diagram of the structure of the support mechanism of the present invention when installed in separate parts; Figure 6 This is a schematic diagram of the force distribution when the crane provides the upward pulling force; In the diagram: 1-support, 2-auxiliary mechanism, 201-shell, 202-motor, 203-worm gear, 204-worm gear, 205-connecting shaft, 206-base, 207-rotating rod, 208-fixing nut, 3-support mechanism, 301-sleeve, 302-port, 303-fixing block, 304-flow channel, 305-first spring, 306-first piston, 307-second spring, 308-second piston, 309-first limiting ring, 310-second limiting ring, 311-limiting tube, 312-rotating shaft, 313-connecting column, 314-buoy, 4-floating platform, 5-connecting seat, 6-lever, 7-connecting arm, 8-support; 9-floating body foundation; 10-sea surface; 11-dock; 12-crane. Detailed Implementation

[0015] The technical solution of the present invention is further described below, but the scope of protection is not limited to what is described.

[0016] like Figures 1 to 5 As shown.

[0017] This application discloses a lever construction device for assembling the upper part of a floating structure at a near-shore temporary wharf, comprising: A support 1 is fixed on the dock or the crane frame. A connecting seat 5 for expanding the area is fixed on the support 1. An auxiliary mechanism 2 is installed on the connecting seat 5. A lever 6 is rotatably hinged to the auxiliary mechanism 2. The middle part of the lever 6 can only rotate up and down relative to the auxiliary mechanism 2. The auxiliary mechanism 2 restricts the forward and backward displacement of the lever 6 and controls the left and right swing of the lever 6.

[0018] The lever 6 is fixedly connected to a bracket 8 via a connecting arm 7 at its end, and a support mechanism 3 is sleeved on the bracket 8. A floating platform 4, which is connected to the floating body foundation 9, is fixedly attached to the top of the support mechanism 3. The floating platform 4 is fixedly connected to the floating body foundation 9 and is connected to the hoisting cable of the crane 12.

[0019] The crane 12 provides upward pulling force to the floating platform 4 and the floating body foundation 9 fixedly connected to the floating platform 4 through the lifting cable. The floating platform 4 can only rotate up and down relative to the auxiliary mechanism 2 through the lever 6. The lever 6 can be controlled by the auxiliary mechanism 2 to swing the floating platform 4 left and right, which solves the problem that the crane lifting cable is easy to swing the floating body foundation on the sea surface when blown by the sea wind.

[0020] The auxiliary mechanism 2 includes a housing 201 fixedly connected to the connecting seat 5. A rotatable connecting shaft 205 is installed inside the housing 201. A worm gear 204 is fixedly connected to the bottom of the connecting shaft 205, and the worm gear 204 meshes with a worm 203. The worm 203 is connected to a motor 202, and the housing of the motor 202 is fixed to the connecting seat 5. A base 206 is fixed to the top of the connecting shaft 205. The base 206 has a groove for accommodating a lever 6. The lever 6 can only rotate up and down within the groove of the base 206 via a fixing nut 208. The motor 202 drives the worm 203 to rotate, which in turn drives the worm gear 204 at the bottom of the connecting shaft 205 to rotate. The connecting shaft 205 then drives the base 206 to rotate, causing the base 206 to swing left and right, thus enabling the auxiliary mechanism 2 to control the left and right swing of the lever 6.

[0021] The support mechanism 3 includes a sleeve 301 that is below the sea surface 10 during use, and the sleeve 301 is hollow inside. The top of the sleeve 301 is provided with a port 302 for seawater to enter its interior. A fixing block 303 is fixed inside the sleeve 301 below the port 302. A fixing block 303 is provided inside the fixing block 303 for liquid flow. A first limiting ring 309 and a second limiting ring 310 are fixed inside the sleeve 301 above and below the fixing block 303, respectively. A second spring 307 is installed between the fixed block 303 and the first limiting ring 309. The top of the second spring 307 contacts the first limiting ring 309 through the second piston 308. A first spring 305 is installed between the fixed block 303 and the second limiting ring 310. The bottom of the first spring 305 contacts the second limiting ring 310 through the first piston 306. The second piston 308 and the first piston 306 can slide within the sleeve 301. The space between the second piston 308 and the first piston 306 forms a piston space containing liquid water. Seawater can press the first piston 306 to drive the first spring 305 upward, maintaining stability when subjected to seawater fluctuations. The float 314 can press the second piston 308 to drive the second spring 307 downward. When the load on the floating platform 4 increases, the floating platform 4 moves downward relative to the float 314, allowing seawater to enter through the opening 302, thus maintaining the stability of the floating platform 4.

[0022] The second piston 308 has a float 314 mounted on its top, and a connecting column 313 is fixedly mounted on the float 314. The top of the connecting column 313 can slide through the top of the sleeve 301, and the connecting column 313 is fixedly connected to the bottom surface of the floating platform 4. A rotating shaft 312 is fixedly mounted on the outer side of the top of the sleeve 301. The rotating shaft 312 is sleeved with the bracket 8, and the bracket 8 can only rotate up and down relative to the sleeve 301 about the rotating shaft 312. However, due to the buoyancy of the seawater on the surface 10, the vertical displacement of the bracket 8 relative to the sleeve 301 is limited.

Claims

1. A lever construction device for assembling the upper part of a floating structure at a near-shore temporary dock, characterized in that, include: A lever construction device that limits the swinging of the crane cable carrying the floating foundation on the sea surface; The lever construction device includes a fixed support (1) during use, a connecting seat (5) for expanding the area fixed on the support (1), an auxiliary mechanism (2) installed on the connecting seat (5), and a lever (6) rotatably hinged to the auxiliary mechanism (2); the middle part of the lever (6) can only rotate up and down relative to the auxiliary mechanism (2), the auxiliary mechanism (2) restricts the forward and backward displacement of the lever (6), and the auxiliary mechanism (2) controls the left and right swing of the lever (6); The lever (6) is fixedly connected to a bracket (8) via a connecting arm (7), and a support mechanism (3) is sleeved on the bracket (8); a floating platform (4) is fixedly connected to the floating body foundation (9) on the top of the support mechanism (3), the floating platform (4) is fixedly connected to the floating body foundation (9), and the floating platform (4) is connected to the hoisting cable of the crane (12); The auxiliary mechanism (2) includes a housing (201) fixedly connected to the connecting seat (5), a rotatable connecting shaft (205) installed inside the housing (201), a worm gear (204) fixedly connected to the bottom of the connecting shaft (205), the worm gear (204) meshing with a worm (203), the worm (203) connected to a motor (202), and the housing of the motor (202) fixed on the connecting seat (5); The top of the connecting shaft (205) is fixed with a base (206), and the base (206) is provided with a groove to accommodate the lever (6). The lever (6) can only rotate up and down in the groove of the base (206) by means of a fixing nut (208). The motor (202) drives the worm gear (203) to rotate, and the worm gear (203) drives the turbine tooth (204) at the bottom of the connecting shaft (205) to rotate. The connecting shaft (205) drives the base (206) to rotate, and the base (206) drives the lever (6) to rotate and swing left and right.

2. The lever construction device for assembling the upper part of a floating structure at a near-shore temporary wharf as described in claim 1, characterized in that: The support mechanism (3) includes a sleeve (301) that is below the sea surface (10) during use, and the inside of the sleeve (301) is hollow; The top of the sleeve (301) is provided with a port (302) for seawater to enter its interior.

3. The lever construction device for assembling the upper part of a floating structure at a near-shore temporary wharf as described in claim 2, characterized in that: A fixing block (303) is fixed inside the sleeve (301) below the opening (302). The fixing block (303) is provided with a flow channel (304) for liquid flow. A first limiting ring (309) and a second limiting ring (310) are fixed inside the sleeve (301) above and below the fixing block (303). A second spring (307) is installed between the fixed block (303) and the first limiting ring (309). The top of the second spring (307) contacts the first limiting ring (309) through the second piston (308). A first spring (305) is installed between the fixed block (303) and the second limiting ring (310). The bottom of the first spring (305) contacts the second limiting ring (310) through the first piston (306). The second piston (308) and the first piston (306) can slide inside the sleeve (301). The space between the second piston (308) and the first piston (306) constitutes a piston space, which contains liquid water.

4. The lever construction device for assembling the upper part of a floating structure at a near-shore temporary wharf as described in claim 3, characterized in that: The second piston (308) has a float (314) installed on its top. A connecting column (313) is fixedly installed on the float (314). The top of the connecting column (313) can slide through the top of the sleeve (301). The connecting column (313) is fixedly connected to the bottom surface of the floating platform (4).

5. The lever construction device for assembling the upper part of a floating structure at a near-shore temporary wharf as described in claim 4, characterized in that: A rotating shaft (312) is fixedly installed on the outer side of the top of the sleeve (301). The rotating shaft (312) is sleeved with the bracket (8). The bracket (8) can only rotate up and down relative to the sleeve (301) with the rotating shaft (312) as the axis of rotation.

Images