CN103058068A - Ocean platform floating crane system provided with three-level variable amplitude and vibration-absorption hedging hydraulic device - Google Patents

Abstract

The invention relates to an offshore platform floating crane system with three-stage amplitude-changing and shock-absorbing hedging hydraulic devices. Including hull, shelf, base, slewing platform, tower column, main hoisting mechanism, three-stage luffing and shock-absorbing hydraulic mechanism. The jib lifting control of the floating crane system has a three-stage luffing and shock-absorbing hydraulic mechanism, which can bear a larger load than the conventional rope; the jib anti-sway stability control of the floating crane system has a pair of symmetrical three-stage luffing and damping The shock hydraulic mechanism acts as a buffer. The two-way plunger hedging deceleration and three-stage buffering can minimize the interference, and play the role of anti-swing and shock absorption for the impact of sea wind and waves, and when the back cable suddenly breaks and the load is not greater than a certain value Under the circumstances, the shock-absorbing hydraulic cylinder can also play a certain buffering role so that the heavy objects will not suddenly fall and cause unnecessary financial losses and casualties. The invention has the advantages of compact structure, low center of gravity, strong wind and wave resistance, and large working space, which is very suitable for the working environment of the offshore platform and has good promotion and application value.

Description

Offshore platform floating crane system with three-stage amplitude-changing and shock-absorbing hedging hydraulic device

technical field

The invention relates to a novel offshore platform floating crane system, in particular to a marine platform floating crane system with three-stage amplitude-changing and shock-absorbing and hedging hydraulic functions.

Background technique

The offshore platform floating crane system is mainly a marine crane used on the offshore platform. It is a special crane that performs transportation operations in the offshore environment. It is mainly used for the transportation and transfer of goods between ships, offshore replenishment, and underwater operating equipment. important tasks like recycling. Its safety and reliability, wind and sea resistance, maintainability, mobility and corrosion resistance have high requirements. It has the characteristics of convenient operation, impact resistance, good stability, safety and reliability, wide adaptability to environmental conditions, and can work in unstable sea conditions.

Due to the limitations of the specific environment of the offshore platform, especially the limitations of severe wind and waves, deep sea oil exploration, etc., the floating crane system is required to have the characteristics of wind resistance, wave resistance, swing resistance and shock absorption. At present, the traditional floating crane system for offshore platforms cannot realize anti-swing and shock absorption very well, which greatly restricts the working area and load bearing capacity of the floating crane system.

Contents of the invention

The purpose of the present invention is to provide a new offshore platform floating crane system mechanism for the above-mentioned defects in the prior art. The mechanism is simple in structure, reliable, impact-resistant, strong in anti-swing and shock-absorbing, and has a wide range of applicable work.

The invention relates to a novel offshore platform floating crane system. It includes a hull, a shelf, a base, a slewing platform, a tower, a main hoisting mechanism, a pair of three-stage luffing and shock-absorbing hydraulic mechanisms. The hull and the base are fixedly connected, the slewing platform and the machine base are connected through a rotating pair, the slewing platform can rotate 360° around its axis, and the tower is fixed on the slewing platform. The main hoisting mechanism is composed of a winch, a pulley block, a wire rope and a hook, and the hook can be lifted by winding the wire rope through the winch to lift heavy objects. The three-stage luffing and damping hydraulic mechanism is respectively connected with the slewing platform and the boom system in the main lifting mechanism through the rotating pair. Among them, the three-stage luffing and shock-absorbing hydraulic mechanism includes: one-stage luffing and shock-absorbing hydraulic cylinder, two-stage luffing and shock-absorbing hydraulic cylinder, and three-stage luffing and shock-absorbing hydraulic cylinder, which utilize the cushioning characteristics and flow control of hydraulic cylinders , so that the swing frequency and swing amplitude of the boom are greatly slowed down during the left and right swinging process of the boom.

Features and advantages of the present invention: a pair of symmetrical three-stage luffing and damping hydraulic mechanisms avoid swings caused by tangential wind and waves. During the rotation of the jib, since obstacles such as surrounding ships or platforms have finer requirements on the amplitude of the pitch and roll of the jib, this pair of three-stage hydraulic buffer devices can play a very good role in stabilizing and when the back rope breaks suddenly and the load is not greater than a certain value, the shock-absorbing hydraulic cylinder can also play a certain buffering role so that the heavy object will not suddenly fall and cause unnecessary financial loss and casualties.

Description of drawings

Figure 1 is a front view of the new floating crane system for offshore platforms.

Figure 2 is a partial enlarged view of the three-stage luffing and damping hydraulic mechanism (B). the

Figure 3 is the internal structure of the first stage luffing and damping hydraulic cylinder (C).

Fig. 4 is the internal structure of the two-stage luffing and damping hydraulic cylinder (D).

Figure 5 is the internal structure of the three-stage luffing and damping hydraulic cylinder (E).

Detailed ways

Preferred embodiments of the present invention are described in detail as follows in conjunction with accompanying drawings:

Referring to Fig. 1-Fig. 5, a new offshore platform floating crane system, a kind of offshore platform floating crane system with three-stage luffing and shock-absorbing hedging hydraulic device, includes a hull 1, a shelf 17, and a base 2 , a slewing platform 3, a tower column 5, a set of main hoisting mechanism A, a pair of three-stage luffing and shock-absorbing hedging hydraulic mechanism B. The hull 1 is fixedly connected to the base 2; the slewing platform 3 and the pedestal 2 are connected through a rotating pair; the slewing platform 3 can rotate 360° around its axis; the tower column 5 is fixed on the slewing platform 3; a pair of three-stage luffing and The damping hydraulic mechanism B is connected to the tower column 5 and the jib frame 10 respectively through a rotating pair.

The structure of the main hoisting mechanism A includes: a winch 4, a lower pulley block 7, an upper pulley block 8, a wire rope 6 and a suspension hook 9. Wherein the winch 4 is fixed on the rotary platform 3, the lower pulley group 7 is installed on the tower column 5, and the upper pulley group 8 is installed on the arm frame 10; the hoist 4 can realize the rise of the suspension hook 9 to lift heavy objects by winding the wire rope 6.

The structure of the three-stage luffing and damping hydraulic mechanism B includes: a first-stage luffing and damping hydraulic cylinder C, a second-stage luffing and damping hydraulic cylinder D, and a third-stage luffing and damping hydraulic cylinder E. The structure of the first-stage luffing damping hydraulic cylinder C includes: plunger 15, cylinder liner 16, gasket set 28, upper start-stop valve 29, upper spring 30, lower spring 31, lower start-stop valve 32; The structure of cylinder D includes: plunger 13, cylinder liner 14, gasket set 23, upper start-stop valve 24, upper spring 25, lower spring 26, and lower start-stop valve 27; the structure of three-stage amplitude-absorbing hydraulic cylinder E includes: plunger 11 , Cylinder liner 12, gasket set 18, upper start and stop valve 19, upper spring 20, lower spring 21, lower start and stop valve 22.

Claims (1)

1. An offshore platform floating crane system with three-stage amplitude-changing and shock-absorbing hedging hydraulic devices, including a hull (1), a shelf (17), a base (2), a slewing platform (3), A tower column (5), a set of main hoisting mechanism (A), a pair of three-stage luffing and shock-absorbing hedging hydraulic mechanism (B). It is characterized in that: the hull (1) and the base (2) are fixedly connected; the slewing platform (3) and the pedestal (2) are connected through a rotating pair; the slewing platform (3) can rotate 360° around its axis; the tower ( 5) Fixed on the slewing platform (3); a pair of three-stage luffing and damping hydraulic mechanisms (B) are respectively connected to the tower column (5) and the jib (10) through the rotating pair; the sea surface is complex and changeable, The disorder and variability of the dynamic load interference make the stability of the boom (10) structure must have a pair of buffer devices to make it run closer to the roadbed test state, and the two-way plunger hedging deceleration will minimize the interference; the main hoisting mechanism (A ) structure includes: hoist (4), lower pulley block (7), upper pulley block (8), wire rope (6) and suspension hook (9); wherein hoist machine (4) is fixed on the slewing platform (3), and lower pulley block ( 7) Installed on the tower column (5), the upper pulley block (8) is installed on the jib (10); the hook (9) can be lifted by winding the wire rope (6) through the hoist (4) to lift heavy objects; three The structure of the stage luffing and damping hydraulic mechanism (B) includes: the first stage luffing shock absorbing hydraulic cylinder (C), the second stage luffing shock absorbing hydraulic cylinder (D), the third stage luffing shock absorbing hydraulic cylinder (E) ; Wherein the structure of the first-stage luffing damping hydraulic cylinder (C) includes: plunger (15), cylinder liner (16), gasket set (28), upper start-stop valve (29), upper spring (30), lower spring ( 31), the lower start-stop valve (32); the gasket set (28) is sleeved on the plunger (15); the lower spring (31) is fixed on the lower start-stop valve (32), and is adjacent to the cavity (a); the upper spring (30) is fixed on the upper stop valve (29), and is adjacent to the through cavity (b); one end of the plunger (15) is closed in the through cavity (b); the through cavity (a), the through cavity (b) are in the During the operation of the equipment, it is filled with compressed oil; the plunger (15) drives the two-stage luffing damping hydraulic cylinder to move upward under the pressure of the oil. Slow down the discharge of oil; the upward movement of the oil hydraulic start-stop valve (32) slows down the injection of oil, so that the oil pressure acts as a buffer; the structure of the two-stage luffing damping hydraulic cylinder (D) includes: plunger (13 ), cylinder liner (14), gasket set (23), upper start-stop valve (24), upper spring (25), lower spring (26), lower start-stop valve (27); washer set (23) set on plunger ( 13) Upper; the lower spring (26) is fixed on the lower start-stop valve (27), and is adjacent to the cavity (c); the upper spring (25) is fixed on the upper start-stop valve (24), and is connected to the cavity (d) Adjacent; one end of the plunger (13) is closed in the through cavity (d); the through cavity (c) and the through cavity (d) are filled with compressed oil during the operation of the equipment; the plunger (13) is under the pressure of the oil Drive the three-stage amplitude-changing shock-absorbing hydraulic cylinder to move upwards. When there is external disturbance and swing, the oil hydraulic start-stop valve (24) moves downward to slow down the discharge of oil; the oil-hydraulic start-stop valve (27) moves upward to make the oil The injection of liquid is slowed down, so that the oil pressure plays a buffer role; among them, the three-stage variable amplitude damping hydraulic cylinder (E) The structure includes: plunger (11), cylinder liner (12), gasket set (18), upper start-stop valve (19), upper spring (20), lower spring (21), lower start-stop valve (22); The gasket set (18) is set on the plunger (11); the lower spring (21) is fixed on the lower start-stop valve (22) and is adjacent to the cavity (e); the upper spring (20) is fixed on the upper start-stop valve (19 ) and adjacent to the cavity (f); one end of the plunger (11) is closed in the cavity (f), and the cavity (e) and cavity (f) are filled with compressed oil during the operation of the equipment; the plunger (11) Under the pressure of the oil, the boom (10) is driven to move upwards. When external interference occurs, the oil hydraulic start-stop valve (19) moves downward to slow down the discharge of oil; the oil-hydraulic start-stop valve ( 22) The upward movement slows down the oil injection, so that the oil pressure acts as a buffer.

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