CN113860146B - Inertial anti-rolling system for lifting hook of offshore crane - Google Patents
Inertial anti-rolling system for lifting hook of offshore crane Download PDFInfo
- Publication number
- CN113860146B CN113860146B CN202111112663.9A CN202111112663A CN113860146B CN 113860146 B CN113860146 B CN 113860146B CN 202111112663 A CN202111112663 A CN 202111112663A CN 113860146 B CN113860146 B CN 113860146B
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- hook
- rotating shaft
- spring
- inertial
- mounting bracket
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/34—Crane hooks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/06—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention discloses an inertial anti-rolling system for a crane hook at sea, and relates to the field of crane hook anti-rolling. The operation of the offshore crane has strict requirements on the rolling angle and the pitching angle of the ship, but the lifting hook can swing more along with the movement of the ship, so that the safety of operators and construction facilities is seriously influenced, and the offshore operation efficiency and the engineering progress are influenced. The invention comprises a damping device, a spring, a slidable inertial transmission device, a transmission connecting rack and a sliding counterweight. When the crane lifting hook is used, the inertia anti-rolling system is arranged on two sides of the side pulley box on the main hook of the crane lifting hook, when the lifting hook moves, the damping device, the spring and the damping buffer effect of the inertia transmission device are mutually overlapped, so that energy storage, release and ablation are realized, vibration and swing of the lifting hook can be effectively reduced, swing amplitude of the lifting hook in the process of offshore lifting operation is reduced, and wave resistance and safety of the offshore crane ship in the process of lifting operation are enhanced.
Description
Technical Field
The invention relates to the field of crane hook stabilization, in particular to an inertial stabilization system for an offshore crane hook.
Background
The large engineering ship mainly comprises a large crane ship, a large crane pipe laying ship, various offshore operation supporting ships and the like, and the large crane equipment is required to be used for carrying out offshore engineering project construction of the engineering ship so as to bear the hoisting operation of offshore large structural objects or equipment. Because the ship is positioned on the sea through an anchoring or dynamic positioning system, the motion state of the ship is a precondition for determining whether the offshore hoisting can be carried out under the action of wind, waves and currents. Meanwhile, the operation of the offshore crane has strict requirements on the rolling angle and the pitching angle of the ship, but under the condition that the crane allows the operation, the crane can swing more along with the movement of the ship in the empty hook state of lifting the derrick mast, hanging the derrick, shackle and releasing the derrick mast, thereby seriously affecting the safety of operators and construction facilities, often causing the shutdown of offshore operation, not only affecting the offshore operation efficiency and the engineering progress, but also increasing the offshore operation cost. The scheme for controlling the swing of the hook head mainly comprises the steps of adding ballast, modifying a ship, adding ship stabilizing equipment, stabilizing the hook head, and the like, and the scheme for modifying the ship and adding the ship stabilizing equipment can effectively improve and improve the wave resistance of the crane ship, but needs great modification and has very high cost.
Disclosure of Invention
The invention aims to solve the technical problems and provide the technical task of perfecting and improving the prior art scheme, and provides an inertial anti-rolling system for a lifting hook of an offshore crane, aiming at reducing and controlling the swinging degree of the lifting hook in an idle state. For this purpose, the present invention adopts the following technical scheme.
The utility model provides an inertia anti-shake system for marine crane lifting hook, includes the casing and locates the anti-shake system main part in the casing, anti-shake system main part include damping device, spring, slidable inertial drive device, transmission connection rack and slip counter weight, the spring include first spring and second spring, damping device include afterbody link firmly vice and attenuator, afterbody link firmly vice through damping slide bar and attenuator sliding connection, first spring cover on damping slide bar, the both ends of first spring link firmly vice and the fender dish elasticity on the attenuator with the afterbody respectively and paste mutually, the attenuator connect and be fixed in inertial drive device on, inertial drive device pass through the transmission connection rack and be connected with the slip counter weight, the transmission connection rack overcoat have the second spring, the both ends of second spring paste respectively with inertial drive device and slip counter weight from left to right, damping device, transmission connection rack and slip are the linear type range that is the straight line type counter weight.
When the crane lifting hook is used, the inertia anti-rolling system is arranged on two sides of the side pulley box on the main hook of the crane lifting hook, the inertia anti-rolling system can be connected with the side plates through the connecting side plates, the high-strength bolts are fixedly connected with the pulley box, when the lifting hook moves, the damping device, the springs and the damping buffer effect of the inertia transmission device are mutually overlapped, so that energy storage, release and ablation are realized, vibration and swing of the lifting hook in the process of offshore lifting operation can be effectively reduced, swing amplitude of the lifting hook is reduced, swing characteristics of the lifting hook are reduced under the condition that a large-scale lifting ship is not transformed, wave resistance and safety of the offshore lifting ship in the process of lifting operation are enhanced, and the crane lifting hook has obvious improvement effect on long-period small-range structural movement adjustment and is relatively low in implementation cost.
As a preferable technical means: the inertia transmission device comprises a mounting bracket, a pinion, a middle gear, a large gear, a first flywheel and a second flywheel, wherein the pinion is meshed with the large gear, the pinion and the first flywheel are arranged on a first rotating shaft, the large gear, the middle gear and the second flywheel are arranged on a second rotating shaft, the middle gear is meshed with a transmission connecting rack, the first rotating shaft and the second rotating shaft are rotatably connected to the mounting bracket, and the first rotating shaft and the second rotating shaft are arranged in a left-right parallel mode. The structure of the inertial transmission device is effectively realized, and the structure is simple.
As a preferable technical means: the number of the small gears and the number of the large gears are 2, the small gears and the large gears are symmetrically arranged on two axial sides of the middle gear, and the first flywheel and the second flywheel are respectively arranged on the front side and the rear side of the mounting bracket. The double gears and the double flywheel increase the stability of the system transmission.
As a preferable technical means: the mounting bracket is provided with a front gear groove, a middle gear groove and a rear gear groove, the small gears and the large gears are meshed into groups, the two groups of small gears and the large gears are respectively positioned in the front gear groove and the rear gear groove, the middle gears are positioned in the middle gear groove, and the transmission connecting rack penetrates through the right side wall of the mounting bracket and stretches into the middle gear groove to be in sliding fit with the middle gear groove. The symmetrical arrangement is better in stability.
As a preferable technical means: the pinion, the large gear, the middle gear and the transmission connecting rack are all straight teeth. The straight teeth are simple to process, universal to use and low in cost.
As a preferable technical means: the modulus of the small gear and the large gear is 8, the transmission ratio is 2, and the modulus of the middle gear and the transmission connecting rack is 8. The modulus and the transmission ratio are reasonable, and the inertia transmission capability is good.
As a preferable technical means: the first rotating shaft and the second rotating shaft are rotatably arranged on the mounting bracket through bearings. A stable and reliable rotatable structure is achieved.
As a preferable technical means: the first rotating shaft and the second rotating shaft are connected with the mounting bracket through 4 bearings, and the 4 bearings are respectively arranged on the front side wall and the rear side wall of the mounting bracket and the front side wall and the rear side wall of the middle gear groove. Through 4 bearing supports, the rotation support is more reliable and stable.
As a preferable technical means: the bottoms of the mounting bracket and the sliding counterweight are provided with sliding small wheels. So that the sliding is smoother and the sliding resistance is small.
The beneficial effects are that: through using this inertia anti-shake system on the hoist of large-scale crane ship, large-scale jack-up pipe-laying ship, when the lifting hook takes place the motion, damping device, the spring, inertial drive's damping buffer effect stacks each other, realize the storage of energy, release and ablation, can effectively reduce the vibration and the swing of lifting hook, reduce the swing range of lifting hook in the marine hoisting operation in-process, under the condition that does not carry out large-scale crane ship and reform transform in a large number, reduce lifting hook swing characteristic, the wave resistance and the security of marine crane ship in the hoisting operation in-process have been strengthened, have obvious improvement effect to long period small-scale structural motion regulation, the implementation cost is relatively lower, the safety of operating personnel and facility has been improved, offshore operation efficiency has been improved, and offshore construction period is shortened.
Drawings
Fig. 1 is a schematic diagram of the structure of the present invention.
FIG. 2 is a schematic diagram of the main structure of the stabilizer system of the present invention.
Fig. 3 is a schematic view of the installation position of the present invention in use.
In the figure: 1. damping means; 2. an inertial drive; 3. the transmission is connected with the rack; 4. sliding weights; 5. a first spring; 6. a second spring; 7. a housing; 8. a pulley box; 101. the tail part is fixedly connected with a pair; 102. damping the sliding rod; 103. a damper; 104. a baffle disc; 201. a mounting bracket; 202. a second flywheel; 203. a first flywheel; 204. a pinion gear; 205. a large gear; 206. a middle gear; 207. a first rotating shaft; 208. a second rotating shaft; 209. a bearing; 20101. a front gear slot; 20102. a middle gear groove; 20103. rear gear groove.
Detailed Description
The technical scheme of the invention is further described in detail below with reference to the attached drawings.
As shown in fig. 1 and 2, an inertial anti-rolling system for a crane hook at sea comprises a shell 7 and an anti-rolling system main body arranged in the shell 7, wherein the anti-rolling system main body comprises a damping device 1, a spring, a slidable inertial drive device 2, a drive connection rack 3 and a sliding counterweight 4, the spring comprises a first spring 5 and a second spring 6, the damping device 1 comprises a tail fixing pair 101 and a damper 103, the tail fixing pair 101 is in sliding connection with the damper 103 through a damping sliding rod 102, the first spring 5 is sleeved on the damping sliding rod 102, two ends of the first spring 5 are respectively and elastically attached to a baffle disc 104 on the tail fixing pair 101 and the damper 103, the damper 103 is fixedly connected to the inertial drive device 2, the inertial drive device 2 is connected with the sliding counterweight 4 through the drive connection rack 3, the drive connection rack 3 is sleeved with the second spring 6, and two ends of the second spring 6 from left to right are respectively attached to the inertial drive device 2 and the sliding counterweight 4, and the damping device 1, the inertial drive device 2, the drive connection rack 3 and the sliding counterweight 4 are in a linear arrangement.
In order to realize the structure of the inertia transmission device 2, the inertia transmission device 2 comprises a mounting bracket 201, a pinion 204, a middle gear 206, a large gear 205, a first flywheel 203 and a second flywheel 202, wherein the pinion 204 is meshed with the large gear 205, the pinion 204 is arranged on a first rotating shaft 207 with the first flywheel 203, the large gear 205, the middle gear 206 and the second flywheel 202 are arranged on a second rotating shaft 208, the middle gear 206 is meshed with a transmission connecting rack 3, the first rotating shaft 207 and the second rotating shaft 208 are rotatably connected on the mounting bracket 201, and the first rotating shaft 207 and the second rotating shaft 208 are arranged in a left-right parallel manner. The structure of the inertia transmission device 2 is effectively realized, and the structure is simple.
In order to increase the stability of the system transmission, the number of the pinion gears 204 and the large gears 205 is 2, the pinion gears 204 and the large gears 205 are symmetrically arranged on two axial sides of the middle gear 206, and the first flywheel 203 and the second flywheel 202 are respectively arranged on the front side and the rear side of the mounting bracket 201. The double gears and the double flywheel increase the stability of the system transmission.
For better stability, the mounting bracket 201 is provided with a front gear groove 20101, a middle gear groove 20102 and a rear gear groove 20103, the pinion 204 and the large gear 205 are meshed into groups, the two groups are respectively positioned in the front gear groove 20101 and the rear gear groove 20103, the middle gear 206 is positioned in the middle gear groove 20102, and the transmission connecting rack 3 penetrates through the right side wall of the mounting bracket 201 and stretches into the middle gear groove 20102 to be in sliding fit with the middle gear groove 20102. The symmetrical arrangement is better in stability.
For easy purchase, the pinion 204, the large gear 205, the middle gear 206 and the transmission connecting rack 3 are all straight teeth. The straight teeth are simple to process, universal to use, low in cost and convenient to purchase.
In order to achieve better inertia transfer capability, the modulus of the small gear 204 and the large gear 205 is 8, the transmission ratio is 2, and the modulus of the middle gear 206 and the transmission connecting rack 3 is 10. The modulus and the transmission ratio are reasonable, and the inertia transmission capability is good.
In order to achieve a stable and reliable rotatable structure, the first shaft 207 and the second shaft 208 are rotatably provided on the mounting bracket 201 through bearings 209. A stable and reliable rotatable structure is realized.
In order to make the rotation support more stable and reliable, the first rotation shaft 207 and the second rotation shaft 208 are connected with the mounting bracket 201 through 4 bearings 209, and the 4 bearings 209 are respectively arranged on the front and rear side walls of the mounting bracket 201 and the front and rear side walls of the middle gear groove 20102. The rotary support is more stable and reliable through the support of 4 bearings 209.
In order to make the sliding smoother, the bottom of the mounting bracket 201 and the sliding weight 4 are provided with sliding small wheels. So that the sliding is smoother and the sliding resistance is small.
As shown in fig. 3, when in use, the inertia stabilizer system is installed on two sides of the side pulley box 8 on the main hook of the crane hook through the shell 7, the shell 7 of the inertia stabilizer system can be fixedly connected with the pulley box 8 through connecting side plates by using high-strength bolts, or according to practical situations, the inertia stabilizer system can also be installed on the hook cage, and when the hook cage does not meet the installation condition, the hook cage needs to be modified to a certain extent.
When the lifting hook moves, the damping buffer effects of the damping device 1, the spring and the inertia transmission device 2 are mutually overlapped to realize energy storage, release and ablation, so that vibration and swing of the lifting hook can be effectively reduced, swing amplitude of the lifting hook in the process of marine lifting operation is reduced, swing characteristics of the lifting hook are reduced under the condition that a large-scale lifting ship is not greatly transformed, wave resistance and safety of the marine lifting ship in the process of lifting operation are enhanced, and the device has obvious improvement effect on structural movement regulation with a long period and a small range and is relatively low in implementation cost.
The inertial stabilizer system for the offshore crane hook shown in fig. 1-3 is a specific embodiment of the invention, has been shown to have outstanding substantial features and significant improvements, and can be modified in terms of shape, structure, etc. according to practical use requirements, in the light of the present invention, all within the scope of protection of the present solution.
Claims (6)
1. An inertial stabilization system for an offshore crane hook, characterized by: including casing (7) and locate the anti-shake system main part in casing (7), anti-shake system main part include damping device (1), spring, slidable inertial drive device (2), transmission connection rack (3) and slip counter weight (4), the spring include first spring (5) and second spring (6), damping device (1) including afterbody link firmly vice (101) and attenuator (103), afterbody link firmly vice (101) and attenuator (103) sliding connection through damping slide bar (102), first spring (5) cover on damping slide bar (102), the both ends of first spring (5) are pasted with the fender dish (104) elasticity on afterbody link firmly vice (101) and attenuator (103) respectively, attenuator (103) connect and be fixed in inertial drive device (2) on, inertial drive device (2) pass through transmission connection (3) and slip counter weight (4) are connected, transmission connection rack (3) overcoat have second spring (6) and inertial drive device (2) are pasted with the elasticity of baffle dish (104) on afterbody link firmly vice (101) and attenuator (103) respectively, inertial drive device (2) and the inertial drive device (4) are pasted with each other The transmission connecting rack (3) and the sliding counterweight (4) are arranged in a straight line from left to right;
when the crane is used, the inertia stabilizer system is arranged on two sides of the pulley box (8) on the main hook of the crane hook through the shell (7), and the shell (7) of the inertia stabilizer system is fixedly connected with the pulley box (8) through the connecting side plates by utilizing high-strength bolts; or the inertia stabilizer system is arranged on the hook cage of the lifting hook; when the lifting hook moves, the damping buffer effects of the damping device (1), the spring and the inertia transmission device (2) are mutually overlapped, so that energy is stored, released and ablated, vibration and swing of the lifting hook are reduced, swing amplitude of the lifting hook in the process of offshore lifting operation is reduced, swing characteristics of the lifting hook are reduced, and wave resistance and safety of the offshore crane ship in the process of lifting operation are enhanced;
the inertia transmission device (2) comprises a mounting bracket (201), a pinion (204), a middle gear (206), a large gear (205), a first flywheel (203) and a second flywheel (202), wherein the pinion (204) is meshed with the large gear (205), the pinion (204) and the first flywheel (203) are arranged on a first rotating shaft (207), the large gear (205), the middle gear (206) and the second flywheel (202) are arranged on a second rotating shaft (208), the middle gear (206) is meshed with a transmission connecting rack (3), the first rotating shaft (207) and the second rotating shaft (208) are rotatably connected to the mounting bracket (201), and the first rotating shaft (207) and the second rotating shaft (208) are arranged in parallel left and right;
the number of the small gears (204) and the number of the large gears (205) are 2, the small gears and the large gears are symmetrically arranged on two axial sides of the middle gear (206), and the first flywheel (203) and the second flywheel (202) are respectively arranged on the front side and the rear side of the mounting bracket (201);
the mounting bracket (201) is provided with a front gear groove (20101), a middle gear groove (20102) and a rear gear groove (20103), the pinion (204) and the large gear (205) are meshed into groups, the two groups are respectively positioned in the front gear groove (20101) and the rear gear groove (20103), the middle gear (206) is positioned in the middle gear groove (20102), and the transmission connecting rack (3) penetrates through the right side wall of the mounting bracket (201) and stretches into the middle gear groove (20102) to be in sliding fit with the middle gear groove (20102).
2. An inertial stabilization system for an offshore crane hook according to claim 1, wherein: the pinion (204), the large gear (205), the middle gear (206) and the transmission connecting rack (3) are all straight teeth.
3. An inertial stabilization system for an offshore crane hook according to claim 2, wherein: the modulus of the pinion (204) and the large gear (205) is 8, the transmission ratio is 2, and the modulus of the middle gear (206) and the transmission connecting rack (3) is 8.
4. An inertial stabilization system for an offshore crane hook according to claim 1, wherein: the first rotating shaft (207) and the second rotating shaft (208) are rotatably arranged on the mounting bracket (201) through bearings (209).
5. An inertial stabilization system for an offshore crane hook according to claim 4, wherein: the first rotating shaft (207) and the second rotating shaft (208) are connected with the mounting bracket (201) through 4 bearings (209), and the 4 bearings (209) are respectively arranged on the front side wall and the rear side wall of the mounting bracket (201) and the front side wall and the rear side wall of the middle gear groove (20102).
6. An inertial stabilization system for an offshore crane hook according to claim 1, wherein: the bottoms of the mounting bracket (201) and the sliding counterweight (4) are provided with sliding small wheels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111112663.9A CN113860146B (en) | 2021-09-18 | 2021-09-18 | Inertial anti-rolling system for lifting hook of offshore crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111112663.9A CN113860146B (en) | 2021-09-18 | 2021-09-18 | Inertial anti-rolling system for lifting hook of offshore crane |
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| Publication Number | Publication Date |
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| CN113860146A CN113860146A (en) | 2021-12-31 |
| CN113860146B true CN113860146B (en) | 2023-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111112663.9A Active CN113860146B (en) | 2021-09-18 | 2021-09-18 | Inertial anti-rolling system for lifting hook of offshore crane |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114955912A (en) * | 2022-06-30 | 2022-08-30 | 岳永垒 | High-stability safety type hoist |
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