CN113860146A - Inertial stabilization system for offshore crane hook - Google Patents
Inertial stabilization system for offshore crane hook Download PDFInfo
- Publication number
- CN113860146A CN113860146A CN202111112663.9A CN202111112663A CN113860146A CN 113860146 A CN113860146 A CN 113860146A CN 202111112663 A CN202111112663 A CN 202111112663A CN 113860146 A CN113860146 A CN 113860146A
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- spring
- gear
- inertia
- offshore
- sliding
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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
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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
- 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 stabilization system for an offshore crane hook, and relates to the field of crane hook stabilization. The operation of the offshore crane has strict requirements on the rolling and pitching angles of the ship, but the lifting hook can generate larger swing along with the movement of the ship, so that the safety of operating personnel 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 inertia transmission device, a transmission connecting rack and a sliding counterweight. When the crane lifting hook is in motion, damping buffering effects of the damping device, the spring and the inertia transmission device are mutually superposed, 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 lifting operation process 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 support ships and the like, and the large crane equipment is required for offshore engineering project construction of the engineering ship and is used for bearing the hoisting operation of large offshore structures or equipment. Because the ship is in place at sea through the anchoring or dynamic positioning system, the motion state of the ship is a precondition for determining whether 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 and pitching angles of the ship, but under the condition that the crane allows operation, the lifting hook can swing greatly along with the movement of the ship when the crane is in an empty hook state such as a derrick mast, a hanging buckle, a shackle and a derrick mast, the safety of operators and construction facilities is seriously affected, the offshore operation is frequently stopped, the offshore operation efficiency and the engineering progress are affected, and the offshore operation cost is increased. The scheme for controlling the swinging of the hook head mainly comprises the steps of increasing ballast, reforming a ship shape, increasing ship body anti-rolling equipment, performing anti-rolling control on the hook head and the like, wherein the scheme for reforming the ship shape and increasing the ship body anti-rolling equipment can effectively improve and improve the wave resistance of the crane ship, but large reforming is needed, and the cost is very high.
Disclosure of Invention
The technical problem to be solved and the technical task provided by the invention are to perfect and improve the prior technical scheme, and provide an inertial stabilization system for a lifting hook of an offshore crane, so as to reduce and control the swing degree of the lifting hook in an idle state. Therefore, the invention adopts the following technical scheme.
An inertial anti-rolling system for a lifting hook of an offshore crane comprises a shell and an anti-rolling system main body arranged in the shell, wherein the anti-rolling system main body comprises a damping device, a spring, a slidable inertial transmission device, a transmission connecting rack and a sliding counterweight, the spring comprises a first spring and a second spring, the damping device comprises a tail part fixedly connecting pair and a damper, the tail part fixedly connecting pair is in sliding connection with the damper through a damping sliding rod, the first spring is sleeved on the damping sliding rod, two ends of the first spring are respectively elastically attached to a baffle disc on the tail part fixedly connecting pair and the damper, the damper is connected and fixed on the inertial transmission device, the inertial transmission device is connected with the sliding counterweight through the transmission connecting rack, the second spring is sleeved outside the transmission connecting rack, and two ends of the second spring are respectively attached to the inertial transmission device and the sliding counterweight, the damping device, the inertia transmission device, the transmission connecting rack and the sliding counterweight are linearly arranged from left to right.
During the use, inertia anti-rolling system installs the both sides at the sideslip pulley case on hoist lifting hook owner hook, the curb plate is connected to inertia anti-rolling system accessible, utilize high strength bolt to link firmly together with the pulley case, when the lifting hook takes place the motion, damping device, a spring, inertial drive's damping buffering effect superposes each other, realize the storage of energy, release and melting, can effectively reduce the vibration and the swing of lifting hook, reduce the amplitude of oscillation of lifting hook among the marine jack-up operation process, under the condition that does not carry out large-scale crane ship and reform transform in a large number, reduce the lifting hook characteristic of swaying, marine crane ship's wave resistance and security in the operation process of lifting by crane have been strengthened, structure motion to long period miniaturely is adjusted and is had obvious improvement effect, implementation cost is lower relatively.
As a preferable technical means: inertia transmission include installing support, pinion, well gear, gear wheel, first flywheel and second flywheel, pinion and gear wheel engagement, pinion and first flywheel locate in the first pivot, gear wheel, well gear and second flywheel locate in the second pivot, well gear and transmission connect the rack toothing, first pivot and second pivot rotationally connect on the installing support and first pivot and second pivot about according to parallel arrangement. Effectively realize inertia transmission structure, simple structure.
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 positioned on the front side and the rear side of the mounting support. The double gears and the double flywheel increase the stability of the system transmission.
As a preferable technical means: the installing support be equipped with preceding gear groove, well gear groove and back gear groove, pinion and gear wheel meshing are in groups, two sets of gear groove and back gear groove before being located respectively, well gear position in well gear groove, the transmission connect the rack pass the right side wall of installing support and stretch into in the gear groove and with well gear groove sliding fit. The stability is better because of the symmetrical arrangement.
As a preferable technical means: the pinion, the gearwheel, the middle gear and the transmission connecting rack all adopt 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 big gear is 8, the transmission ratio is 2, and the modulus of the middle gear and the transmission connecting rack is 8. The module and the transmission ratio are reasonable, and the inertia transfer capacity is better.
As a preferable technical means: the first rotating shaft and the second rotating shaft are both rotatably arranged on the mounting bracket through bearings. A stable and reliable rotatable structure is achieved.
As a preferable technical means: first pivot and second pivot all be connected with the installing support through 4 bearings, 4 bearings are located respectively on the wall of both sides around the installing support and the wall of both sides around the well gear groove. Through 4 bearing support, it is more reliable and more stable to rotate the support.
As a preferable technical means: and sliding small wheels are arranged at the bottoms of the mounting bracket and the sliding counterweight. The sliding is smoother and the sliding resistance is small.
Has the advantages that: by using the inertia anti-rolling system on the cranes of a large-scale crane ship and a large-scale crane pipe-laying ship, when the lifting hook moves, the damping buffering effects of the damping device, the spring and the inertia transmission device are mutually superposed, the energy storage, release and ablation are realized, the vibration and the swing of the lifting hook can be effectively reduced, the swing amplitude of the lifting hook in the process of offshore crane operation is reduced, the swing characteristic of the lifting hook is reduced under the condition that the large-scale crane ship is not greatly transformed, the wave resistance and the safety of the offshore crane ship in the process of crane operation are enhanced, the inertia anti-rolling system has obvious improvement effect on the structural motion regulation in a long period and a small range, the implementation cost is relatively low, the safety of operating personnel and facilities is improved, the operation efficiency is improved, and the offshore construction period is shortened.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a schematic structural diagram of the main body of the anti-rolling system of the invention.
Fig. 3 is a schematic view of the installation position of the present invention in use.
In the figure: 1. a damping device; 2. an inertial drive; 3. the transmission is connected with the rack; 4. sliding the counterweight; 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. a damping slide bar; 103. a damper; 104. a catch tray; 201. mounting a bracket; 202. a second flywheel; 203. a first flywheel; 204. a pinion gear; 205. a bull gear; 206. a middle gear; 207. a first rotating shaft; 208. a second rotating shaft; 209. a bearing; 20101. a front gear groove; 20102. a middle gear groove; 20103. a rear gear groove.
Detailed Description
The technical scheme of the invention is further explained in detail by combining the drawings in the specification.
As shown in fig. 1 and 2, an inertial roll reduction system for a marine crane hook comprises a housing 7 and a roll reduction system body arranged in the housing 7, wherein the roll reduction system body comprises a damping device 1, a spring, a slidable inertial transmission device 2, a transmission connecting 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 part fixedly connecting pair 101 and a damper 103, the tail part fixedly connecting pair 101 is connected with the damper 103 in a sliding way 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 elastically attached to the tail part fixedly connecting pair 101 and a baffle disc 104 on the damper 103, the damper 103 is connected and fixed on the inertial transmission device 2, the inertial transmission device 2 is connected with the sliding counterweight 4 through the transmission connecting rack 3, the transmission connecting rack 3 is sleeved with the second spring 6, two ends of the second spring 6 are respectively attached to the inertial transmission device 2 and the sliding counterweight 4, the damping device 1, the inertia transmission device 2, the transmission connecting rack 3 and the sliding counterweight 4 are linearly arranged from left to right.
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 bull gear 205, a first flywheel 203 and a second flywheel 202, wherein the pinion 204 is meshed with the bull gear 205, the pinion 204 and the first flywheel 203 are arranged on a first rotating shaft 207, the bull 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. Effectively realize inertia transmission 2 structure, simple structure.
In order to increase the stability of the system transmission, the number of the small gears 204 and the large gears 205 is 2, and 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 double gears and the double flywheel increase the stability of the system transmission.
In order to improve the 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 small gear 204 and the large gear 205 are meshed into a group, 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, extends into the middle gear groove 20102 and is in sliding fit with the middle gear groove 20102. The stability is better because of the symmetrical arrangement.
For the convenience of purchase, the pinion 204, the bull gear 205, the middle gear 206 and the transmission connecting rack 3 all adopt straight teeth. The straight teeth are simple to process, universal in use, low in cost and convenient to purchase.
In order to realize better inertia transfer capacity, the module of the small gear 204 and the large gear 205 is 8, the transmission ratio is 2, and the module of the middle gear 206 and the transmission connecting rack 3 is 10. The module and the transmission ratio are reasonable, and the inertia transfer capacity is better.
In order to realize a stable and reliable rotatable structure, the first rotating shaft 207 and the second rotating shaft 208 are rotatably disposed on the mounting bracket 201 through a bearing 209. A stable and reliable rotatable structure is realized.
In order to make the rotational support more stable and reliable, the first rotating shaft 207 and the second rotating shaft 208 are both 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. Through 4 bearings 209 supports, the rotation support is more reliable and more stable.
In order to make the sliding more smooth, the bottom of the mounting bracket 201 and the sliding weight 4 are provided with small sliding wheels. The sliding is smoother and the sliding resistance is small.
As shown in figure 3, during the use, inertia roll reduction system installs the both sides of sideslip pulley case 8 on crane hook owner hook through its casing 7, and the curb plate is connected to inertia roll reduction system's casing 7 accessible, utilizes high strength bolt to link firmly together with pulley case 8, perhaps according to actual conditions, inertia roll reduction system also can install on lifting hook cage, when hook cage is not conform to the installation condition, needs to carry out transformation of certain degree to hook cage.
When the lifting hook moves, the damping buffering effects of the damping device 1, the spring and the inertia transmission device 2 are mutually superposed, energy storage, release and ablation are realized, vibration and swing of the lifting hook can be effectively reduced, the swing amplitude of the lifting hook in the process of offshore lifting operation is reduced, the swing characteristic of the lifting hook is reduced under the condition that a large-scale crane ship is not transformed, the wave resistance and the safety of the offshore crane ship in the process of lifting operation are enhanced, the improvement effect on structural motion regulation in a long period and a small range is obvious, and the implementation cost is relatively low.
The inertial stabilizing system for offshore crane hooks, illustrated in the above figures 1 to 3, is a particular embodiment of the present invention, which has shown the outstanding essential features and remarkable improvements of the present invention, and it is within the scope of protection of the present solution to modify it equally in shape, structure, etc. according to the needs of the actual use, while remaining within the teaching of the present invention.
Claims (9)
1. An inertial roll reduction system for a marine crane hook, characterized by: the damping and stabilizing device comprises a shell (7) and a stabilizing system body arranged in the shell (7), wherein the stabilizing system body comprises a damping device (1), a spring, a slidable inertia transmission device (2), a transmission connecting 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 part fixedly connected pair (101) and a damper (103), the tail part fixedly connected 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 elastically attached to a tail part fixedly connected pair (101) and a baffle disc (104) on the damper (103), the damper (103) is connected and fixed on the inertia transmission device (2), and the inertia transmission device (2) is connected with the sliding counterweight (4) through the transmission connecting rack (3), the second spring (6) is sleeved outside the transmission connecting rack (3), two ends of the second spring (6) are respectively attached to the inertia transmission device (2) and the sliding counterweight (4), and the damping device (1), the inertia transmission device (2), the transmission connecting rack (3) and the sliding counterweight (4) are linearly arranged from left to right;
when the crane hook is used, the inertia anti-rolling system is arranged on two sides of a side sliding pulley box (8) on a main hook of the crane hook through a shell (7), and the shell (7) of the inertia anti-rolling system is fixedly connected with the pulley box (8) through a connecting side plate by using a high-strength bolt; or the inertial stabilization system is arranged on the hook cage of the lifting hook; when the lifting hook moves, the damping buffering effects of the damping device (1), the spring and the inertia transmission device (2) are mutually superposed, so that energy is stored, released and ablated, the vibration and the swing of the lifting hook are reduced, the swing amplitude of the lifting hook in the marine hoisting operation process is reduced, the swing characteristic of the lifting hook is reduced, and the wave resistance and the safety of the marine crane ship in the hoisting operation process are enhanced.
2. An inertial roll reduction system for an offshore crane hook according to claim 1, characterized in that: inertia drive unit (2) including installing support (201), pinion (204), well gear (206), gear wheel (205), first flywheel (203) and second flywheel (202), pinion (204) and gear wheel (205) meshing, pinion (204) and first flywheel (203) locate on first pivot (207), gear wheel (205), well gear (206) and second flywheel (202) locate on second pivot (208), well gear (206) and transmission connect rack (3) meshing, first pivot (207) and second pivot (208) rotationally connect on installing support (201) and first pivot (207) and second pivot (208) according to controlling parallel arrangement.
3. An inertial roll reduction system for an offshore crane hook according to claim 2, characterized in that: 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).
4. An inertial roll reduction system for an offshore crane hook according to claim 3, characterized in that: the mounting bracket (201) is provided with a front gear groove (20101), a middle gear groove (20102) and a rear gear groove (20103), a pinion (204) and a gearwheel (205) are meshed into a group, the two groups of the pinion and the gearwheel are respectively positioned in the front gear groove (20101) and the rear gear groove (20103), a middle gear (206) is positioned in the middle gear groove (20102), and a transmission connecting rack (3) penetrates through the right side wall of the mounting bracket (201) and extends into the middle gear groove (20102) and is in sliding fit with the middle gear groove (20102).
5. An inertial roll reduction system for an offshore crane hook according to claim 4, characterized in that: the pinion (204), the gearwheel (205), the middle gear (206) and the transmission connecting rack (3) all adopt straight teeth.
6. An inertial roll reduction system for an offshore crane hook according to claim 5, characterized in that: 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 8.
7. An inertial roll reduction system for an offshore crane hook according to claim 4, characterized in that: the first rotating shaft (207) and the second rotating shaft (208) are rotatably arranged on the mounting bracket (201) through a bearing (209).
8. An inertial roll reduction system for an offshore crane hook according to claim 7, characterized in that: 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).
9. An inertial roll reduction system for an offshore crane hook according to claim 4, characterized in that: the bottom of the mounting bracket (201) and the bottom of the sliding counterweight (4) are both provided with small sliding 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 |
|---|---|
| CN113860146A true CN113860146A (en) | 2021-12-31 |
| CN113860146B 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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| Country | Link |
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| CN (1) | CN113860146B (en) |
Cited By (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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| CN113860146B (en) | 2023-08-15 |
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