CN209668643U - Cable Stabilization System for Offshore Floating Cranes - Google Patents

Abstract

The utility model relates to a kind of dead rope systems for marine crane barge, two sets of identical dead rope steel rope systems including being arranged on loop wheel machine, the dead rope steel rope system includes reel and its driving mechanism, transition pulley, well word roller, shackle and rotating prevention sleeve, the reel and its driving mechanism is placed on the turntable under the cantilever crane of loop wheel machine or cantilever crane root position, the transition pulley and well word roller is mounted on cantilever crane, dead rope wirerope (4) passes through transition pulley and well word roller joining shackle and rotating prevention sleeve after releasing from reel, dead rope wirerope (4) leaves cantilever crane by well word roller and connect with lifting object.Compared with prior art, the utility model has the characteristics that stable structure, the service life is long, is applicable to all operations on the sea.

Description

Cable Stabilization System for Offshore Floating Cranes

technical field

The utility model relates to a floating crane system for offshore operations, in particular to a novel cable stabilization system for offshore floating cranes

Background technique

With the development of marine engineering, floating cranes have gradually developed into indispensable lifting equipment for offshore operations. Large-scale floating cranes are widely used in sea salvage, offshore pipe laying, installation and disassembly of offshore platforms, construction of offshore bridges and offshore wind power.

Under the special environmental conditions of offshore operations, the action of sea waves or sea wind causes the hoisting object to shake with the sway of the ship, making the positioning of the hoisting object inaccurate or causing accidents due to large swings. Therefore, the floating cranes for general offshore operations will be equipped with a cable stabilization system (as shown in Figure 10).

The traditional cable stabilization system is composed of drive mechanism II and pulley system (as shown in Figure 10-11). The cable stabilization wire rope 4' leaves the jib frame III through the lead-out pulley 7 and is connected with the hoisting object. Since the lead-out pulley 7 is installed on the jib III, the width of the jib III is limited, and in ocean engineering operations, the hoisting object 8 is often bulky. This causes the angle between the wire rope 4 ' and the center line of the pulley to be relatively large (as Fig. 12, 13). And see from the effect of wire rope 4 ' of stabilizing, for making the shaking decay of hoisting object 8 as soon as possible, this included angle is bigger the better. But the width of pulley rope groove 9 is limited, and when this included angle is too large, the steady cable wire rope 4 ' will produce wear and tear with pulley rope groove 9 edges, thus hastened the damage of steady cable steel rope 4 ', shortens the stability Cable wire rope 4' service life. Moreover, the offshore operation window period is short, and the floating crane often needs to hang the cargo and wait for a long time in the sea wave environment. In case the steel wire rope 4' of the stable cable is damaged during this process, it is easy to cause an accident.

With the development of marine engineering, it is an inevitable trend to increase the size of the floating crane, so the length of the jib is also getting longer and longer. This just causes the length lengthening of steel wire rope on the jib frame, and the weight also increases. Because there is no suspension hook at the free end below the steel wire rope, the weight of the vertical free section of the steel wire rope is lighter. When the tension or weight of the steel wire rope on the boom is greater than the weight of the vertical free section, even if the reel is put out, the free end of the steel wire rope cannot be lowered. Once this situation occurs during offshore operations, construction personnel are often helpless.

When the hoisting object shakes, the tension difference between the two steel wire ropes makes it attenuate rapidly. When the hoisting object shakes suddenly and violently, the tension of the wire rope on the tension side increases sharply, which may easily cause damage to the hoisting object at the fixed point of the wire rope, and may also easily exceed the limit value of the wire rope system and cause damage to the wire rope system.

Utility model content

The purpose of this utility model is to provide a floating crane and cable stabilization system with stable structure and long service life applicable to all offshore operations in order to overcome the above-mentioned defects in the prior art.

The purpose of this utility model can be achieved through the following technical solutions: a cable stabilization system for offshore floating cranes, including two sets of the same cable stabilization wire rope system arranged on the crane, characterized in that the cable stabilization wire rope system It includes a reel and its driving mechanism, a transition pulley, a well-tac-toe roller, a shackle and an anti-rotation sleeve. The reel and its driving mechanism are placed on the turntable under the jib of the crane or at the root of the jib. The transition pulley and the well-tac-toe roller are installed on the jib frame, the steel wire rope is unwound from the drum, and passes through the transition pulley and the well-tac-toe roller to connect the shackle and the anti-rotation sleeve, and the steel wire rope leaves the boom through the well-tac-toe roller Connect with hoisting objects.

The well-tac-toe roller is composed of two upper idler assemblies, two lower idler assemblies and a well-tac-toe roller bracket, and the cable-stabilizing wire rope is limited to two upper idler assemblies and two lower idler assemblies. between assemblies. Each set of well-tac-toe rollers consists of two upper rollers and two lower rollers, which can limit the steel wire rope between the four rollers. In this way, no matter where the hoisting objects are or how big the hoisting objects are, the steel wire ropes will leave the jib through the cooperation with the outer circumference of the idler roller, which can protect the wire ropes from damage, and is especially suitable for large-scale floating cranes operating at sea demand.

The idler roller and rolling bearing in the well-tac-toe roller are vulnerable parts. Considering the convenience of maintenance, each idler assembly consists of two parts, the support sleeve and the detachable part. Both the upper roller assembly and the lower roller assembly include a detachable part and a support sleeve, the detachable part is fixed on the support sleeve through connecting bolts, and the support sleeve is fixed on the well-tac-toe roller through fixing bolts on the stand.

The detachable parts include rollers, roller shafts, rolling bearings, bearing sleeves, through covers, shaft sleeves and through cover bolts. The rollers are connected to both ends of the roller shafts through rolling bearings, and the rolling bearings are installed on the bearing sleeves. , the through cover is fixed on one side of the bearing sleeve through the through cover bolts, and the shaft sleeve is sleeved on the rolling bearing and is located between the through cover and the rolling bearing.

Wherein, the idler in the upper idler assembly includes two upper idler rollers arranged in parallel, and the idler shaft is an upper idler shaft located between the two upper idler rollers;

The idler in the lower idler assembly includes two lower idler rollers arranged in parallel, and the idler shaft is the lower idler shaft located between the two lower idler rollers;

When parts need to be replaced, just remove the connecting bolts on both sides; loosen the fixing bolts so that the fixing bolts are only connected to the threads of the supporting sleeve; use the fixing bolts as the fulcrum to pull the supporting sleeve to the outside, and the movable The disassembly part is disassembled as a whole. In the removable part, the outer ring of the bearing is installed in the hub of the idler roller through the bearing sleeve. When the bearing needs to be replaced, first remove the through cover bolts and the through cover; then screw the through cover bolts on the bearing sleeve; remove.

The upper idler and the lower idler are respectively supported on the upper idler shaft and the lower idler shaft through rolling bearings, so that the idler can rotate flexibly. When the steel wire rope passes through the idler roller and leaves the jib, the idler roller can follow the movement of the wire rope and rotate, which can protect the wire rope from wear and tear, thereby prolonging the service life of the wire rope.

The shackle and the anti-rotation sleeve include a shackle and an anti-rotation sleeve. The end of the wire rope is connected to the shackle through a wire rope clamp. An anti-rotation sleeve is hung under the shackle, and a lifting chain is connected underneath. The anti-rotation sleeve can release the torsion of the wire rope to protect the wire rope when the free length of the lower end of the wire rope is relatively long. A hoisting chain is hung below the anti-rotation sleeve to act as a counterweight to solve the problem that the weight of the vertical free section of the steel wire rope is too light to be lowered.

The reel and its driving mechanism include a drive motor, a brake, a reduction box and a reel, and the drive motor is sequentially connected to the brake, the reduction box and the reel, and the stable wire rope is stored on the reel, and the drive The motor drives the reel to rotate to unwind or rewind the steel wire rope.

The drive motor has two modes of operation, constant torque and constant power. When the steel wire rope is stabilizing the goods, the motor is in the constant torque mode, so that the maximum tension of the wire rope is a constant value. When the hoisting object is swaying under the action of sea waves, the tension difference between the two steel wire ropes in two directions can play a stabilizing role. When the hoisting object suddenly swings violently, the tension of the steel wire rope will exceed this constant value. At this time, the steel wire rope can move with the cargo to avoid damage to the cargo and the wire rope system itself under the action of a sudden large tension. When the steel wire rope is used as a lifting sling for some light goods, the motor is in constant power mode, and the lifting speed can be adjusted according to the weight of the goods to improve work efficiency.

Compared with the prior art, the utility model has the following advantages:

1. The steel wire rope of the stabilizer leaves the jib and connects with the hoisting object through the well-tac-toe roller device, which can be used for the stabilization of hoisting objects of any size and at any lifting height;

2. The new type of well-shaped roller device makes the cable-steady wire rope match the peripheral surface of the idler roller in any direction, which can protect the cable-steady wire rope from wear and prolong its service life;

3. The well-tac-toe roller device can be disassembled as a whole, which makes it easy to replace the wearing parts;

4. The free end of the steel wire rope adopts a shackle, an anti-rotation sleeve and a counterweight chain, which can release the torsion of the steel wire rope and protect the steel wire rope; it also ensures that the steel wire rope can fall freely under any circumstances .

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the novel cable system;

Fig. 2 is the structural representation of well-tac-toe roller;

Fig. 3 is another side structural representation of well-tac-toe roller;

Fig. 4 is a cross-sectional view along the direction A of Fig. 2;

Figure 5 is a sectional view of the upper roller assembly;

Figure 6 is a sectional view of the lower roller assembly;

Fig. 7 is the end of wire rope of steady cable;

Fig. 8 is a schematic diagram of the reel and its driving mechanism;

Figure 9 is a top view of the reel and its driving mechanism;

Figure 10 is an offshore floating crane system equipped with an existing cable stabilization system;

Fig. 11 is the relationship between the steel wire rope and the hoisting object during the hoisting operation of the prior art;

Fig. 12 is the assembling drawing of existing cable-stabilizing system cable-stabilizing wire rope deriving pulley;

Fig. 13 is a cross-sectional view along line I-I of Fig. 12 .

The numbers in Figure 1-9 indicate:

Drum and its driving mechanism 101, well-tac-toe roller 102, shackle and anti-rotation sleeve 103, upper idler assembly 1, lower idler assembly 2, well-tac-toe roller support 3, wire rope 4; upper idler 21 , upper idler shaft 22, rolling bearing 23, bearing sleeve 24, through cover 25, axle sleeve 26, fixing bolt 27, support sleeve 28, through cover bolt 29, connecting bolt 30; lower idler 31, lower idler shaft 32; Drive motor 41, brake 42, reduction box 43, reel 44, wire rope 45 for stabilizing the cable; rope clamp 51, shackle 52, anti-rotation sleeve 53; transition pulley 6;

Shown in the label among Fig. 10-13: steady cable driving mechanism II, jib III, steady cable steel wire rope 4 ', transition pulley 6 ', lead out pulley 7, hoisting object 8, pulley rope groove 9.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

The above embodiments are only used to illustrate the technical solution of the utility model, and are not limitations to the utility model. The changes, substitutions, modifications and simplifications made by those of ordinary skill in the art within the essential scope of the utility model are all equivalent The transformation of all does not depart from the purpose of the utility model, and also should belong to the scope of protection of the claims of the utility model.

Example 1

A new type of cable stabilization system for offshore floating cranes, including two sets of the same cable stabilization wire rope system arranged on the crane: the left cable stabilization cable system and the right cable stabilization cable system, as shown in Figure 1, the two systems have the same structure , including a reel and its driving mechanism 101, transition pulley 6, well-tac-toe roller 102, shackle and anti-rotation sleeve 103, and the reel and its driving mechanism 101 are placed on the turntable under the jib of the crane or At the root position of the boom, the transition pulley 6 and the well-tac-toe roller 102 are installed on the boom, and the steel wire rope 4 is unwound from the drum and passes through the transition pulley and the well-tac-toe roller to connect the shackle and the anti-rotation sleeve. Steady cable wire rope 4 leaves jib and is connected with hoisting object by the well-tac-toe roller.

Wherein, the structure of the well-tac-toe roller 102 is as shown in Figure 2-4, comprises two upper roller assemblies 1, two lower idler roller assemblies 2 and the well-tac-toe roller support 3, can limit the steel rope 4 of the stable cable to two Between an upper roller assembly 1 and two lower roller assemblies 2. Each set of well-tac-toe rollers consists of two upper rollers and two lower rollers, which can limit the steel wire rope between the four rollers.

The supporting rollers and rolling bearings in the well-tac-toe roller 102 are vulnerable parts. Considering the convenience of maintenance, each idler assembly (i.e. two upper idler assemblies 1 and two lower idler assemblies 2) consists of two parts, the support sleeve 28 and the detachable part. The detachable part It is fixed on the supporting sleeve 28 through the connecting bolt 30, and the supporting sleeve 28 is fixed on the said well-tac-toe roller bracket 3 through the fixing bolt 27. As shown in Fig. 5-6.

The detachable part includes idler roller, idler shaft, rolling bearing 23, bearing sleeve 24, through cover 25, axle sleeve 26 and through cover bolt 29, and the described idler is connected to the two ends of the idler shaft through rolling bearing 23, The rolling bearing 23 is installed on the bearing sleeve 24, the through cover 25 is fixed on one side of the bearing sleeve 24 through the through cover bolt 29, and the shaft sleeve 26 is set on the rolling bearing 23, and is located between the through cover 25 and the rolling bearing 23 .

Wherein, the idler in the upper idler assembly 1 includes two upper idler rollers 21 arranged in parallel, and the idler shaft is an upper idler shaft 22 located between the two upper idler rollers 21; as shown in Figure 5 , The upper idler roller 21 is connected to the two ends of the upper idler roller shaft 22 through rolling bearings 23 .

The idler in the described lower idler assembly 2 includes two lower idler rollers 31 arranged in parallel, and the idler shaft is the lower idler shaft 32 between the two lower idler rollers 31; as shown in Figure 6, The lower idler roller 31 is connected to both ends of the lower idler roller shaft 32 through rolling bearings 23 .

When needing to replace parts, as long as the connecting bolts 30 on both sides are pulled down; the fixing bolts 27 are unscrewed so that the fixing bolts 27 are only threaded with the support sleeve 28; Pull to remove the detachable part as a whole. In the removable part, the outer ring of the bearing 23 is installed in the hub of the idler roller through the bearing sleeve 24 . When the bearing needs to be replaced, first the through cover bolt 29 and the through cover 25 are pulled down; then the through cover bolt 29 is screwed on the bearing sleeve 24; Remove from the roller hub.

The upper idler roller 21 and the lower idler roller 31 are respectively supported on the upper idler roller shaft 22 and the lower idler roller shaft 32 through rolling bearings 23, so that the idler rollers can rotate flexibly. When the steel wire rope passes through the idler roller and leaves the jib, the idler roller can follow the movement of the wire rope and rotate, which can protect the wire rope from wear and tear, thereby prolonging the service life of the wire rope.

As shown in Figure 7, the described shackle and anti-rotation sleeve include a shackle 52 and an anti-rotation sleeve 53, and the end of the wire rope 4 is connected to the shackle 52 through a wire rope clamp 51, and the shackle 52 is lowered. Hang anti-rotation cover 53, connect hoisting chain below. The anti-rotation sleeve can release the torsion of the wire rope to protect the wire rope when the free length of the lower end of the wire rope is relatively long. A hoisting chain is hung below the anti-rotation sleeve to act as a counterweight to solve the problem that the weight of the vertical free section of the steel wire rope is too light to be lowered.

As shown in Figures 8-9, the reel and its drive mechanism include a drive motor 41, a brake 42, a reduction box 43 and a reel 44, and the drive motor 41 is connected to the brake 42, the reduction box 43 and the reel in turn. 44. The wire rope 4 is rolled and stored on the drum 44, and the driving motor 41 drives the drum 44 to rotate to unwind or rewind the wire rope 4.

The drive motor 41 has two modes of operation, constant torque and constant power. When the wire rope 4 is stabilizing the cargo, the driving motor 41 is in the constant torque mode, so that the maximum tension of the wire rope 4 is constant. When the hoisting object swayed under the action of sea waves, the tension difference between the two wire ropes 4 in two directions could play a stabilizing effect. When the hoisting object suddenly swings violently, the tension of the wire rope 4 will exceed this constant value. At this time, the wire rope 4 can move with the cargo to avoid damage to the cargo and the wire rope system itself under the action of a sudden large pulling force. destroy. When the wire rope 4 is used as some light goods such as lifting slings, the driving motor 41 is in the constant power mode, and the lifting speed can be adjusted according to the weight of the goods to improve the operating efficiency.

Claims (10)

1. a kind of dead rope system for marine crane barge, two sets of identical dead rope steel rope systems including being arranged on loop wheel machine, It is characterized in that, the dead rope steel rope system includes reel and its driving mechanism, transition pulley, well word roller, shackle and anti- Pivoted housing, the reel and its driving mechanism are placed on the turntable under the cantilever crane of loop wheel machine or cantilever crane root position, the mistake It crosses pulley and well word roller is mounted on cantilever crane, dead rope wirerope (4) passes through transition pulley and well word roller after releasing from reel Joining shackle and rotating prevention sleeve, dead rope wirerope (4) leave cantilever crane by well word roller and connect with lifting object.

2. a kind of dead rope system for marine crane barge according to claim 1, which is characterized in that the well word roller by Two pop-up roller assemblies (1), two subiculum roller assemblies (2) and well word roller support (3) composition, dead rope wirerope (4) limit System is between two pop-up roller assemblies (1) and two subiculum roller assemblies (2).

3. a kind of dead rope system for marine crane barge according to claim 2, which is characterized in that the upper supporting roller is total It include removable section, support sleeve (28) at (1) and subiculum roller assembly (2), the removable section passes through connection bolt (30) it is fixed on support sleeve (28), support sleeve (28) is fixed on the well word roller support (3) by fixing bolt (27).

4. a kind of dead rope system for marine crane barge according to claim 3, which is characterized in that the detachable part Divide including carrying roller, roller carrier shaft, rolling bearing (23), bearing holder (housing, cover) (24), logical lid (25), axle sleeve (26) and logical bonnet bolt (29), institute The carrying roller stated is connected to roller carrier shaft both ends by rolling bearing (23), and rolling bearing (23) is mounted on bearing holder (housing, cover) (24), described Logical lid (25) be fixed on bearing holder (housing, cover) (24) side by logical bonnet bolt (29), the axle sleeve (26) is covered in rolling bearing (23) On, and be located between logical lid (25) and rolling bearing (23).

5. a kind of dead rope system for marine crane barge according to claim 4, which is characterized in that the upper supporting roller is total It include two upper supporting rollers (21) disposed in parallel at the carrying roller in (1), roller carrier shaft is upper between two upper supporting rollers (21) Roller carrier shaft (22).

6. a kind of dead rope system for marine crane barge according to claim 4, which is characterized in that the snub pulley is total At the carrying roller in (2) include two snub pulleys (31) disposed in parallel, roller carrier shaft be between two snub pulleys (31) under Roller carrier shaft (32).

7. a kind of dead rope system for marine crane barge according to claim 4, which is characterized in that upper supporting roller (21) and under Carrying roller (31) is respectively supported on pop-up roll shaft (22) and subiculum roll shaft (32) by rolling bearing (23), makes carrying roller rotation spirit It is living.

8. a kind of dead rope system for marine crane barge according to claim 1, which is characterized in that the shackle and anti- Pivoted housing includes shackle (52) and rotating prevention sleeve (53), the end of the dead rope wirerope (4) by dead rope steel wire rope clamp (51) with Shackle (52) connection, rotating prevention sleeve (53) are hung under shackle (52), under connect hoisting chain.

9. a kind of dead rope system for marine crane barge according to claim 1, which is characterized in that the reel and its Driving mechanism includes driving motor (41), brake (42), reduction gearbox (43) and reel (44), the driving motor (41) according to Secondary connecting brake (42), reduction gearbox (43) and reel (44), dead rope wirerope (4) volume are stored on reel (44), drive Dynamic motor (41) driving reel (44) rotation unreels or winds dead rope wirerope (4).

10. a kind of dead rope system for marine crane barge according to claim 9, which is characterized in that the driving electricity There are two types of operation modes for machine (41) tool: constant moment of force and invariable power.