CN115973337A - Marine lashing device and method for complete machine transportation of large gantry crane - Google Patents

Abstract

The invention discloses a marine lashing device and method used for the transportation of a large gantry crane, which comprises a strut lashing assembly, a rotating lashing assembly and a jib support assembly; the strut lashing assembly includes a strut and a cart Walking stopper; the rotating binding assembly includes the lower rotating column-gantry binding part, the front reinforcement part of the turntable, the rear reinforcement part of the turntable and the tensioning cable binding part of the door frame; the boom support assembly includes a boom resting Frames, Flexible Lashing Components and Hinge Point Lashing Components. The present invention has less impact on the user's site, good integrity of the whole machine and fast delivery, avoids the use cost of large floating cranes, and reduces installation costs.

Description

Marine lashing device and method for complete machine transportation of large gantry crane

technical field

The invention relates to the marine transportation technology of quay cranes, more specifically, to a marine binding device and method for the transportation of large portal cranes.

Background technique

With the increasing requirements of users for the integrity of large portal cranes, the development of large-scale complete machine transport ships, and the short delivery period on site, large portal cranes gradually adopt the mode of complete machine transportation, and complete machine transportation has become the trend of future development. . Considering the small gauge of the portal crane and the high height of the center of gravity, it is necessary to design a set of lashing devices that meet the safety of large portal cranes in sea transportation to ensure the safety of the portal crane during sea transportation.

Contents of the invention

In view of the above-mentioned defects in the prior art, the object of the present invention is to provide a marine binding device and method for the transportation of a large portal crane, which has little impact on the user's site, and the integrity of the whole machine is good and the machine is delivered to the machine. Faster, eliminating the use of large floating cranes and reducing installation costs.

To achieve the above object, the present invention adopts the following technical solutions:

On the one hand, a marine lashing device used for the transportation of a large portal crane, including a strut lashing assembly, a rotating lashing assembly, and a jib support assembly;

The strut binding assembly includes a strut and a cart travel stop; the upper end of the strut is connected with the gantry of the crane, and the lower end is connected with the deck of the transport ship; the cart travel stop is set on the transport ship on the deck of the crane and is in contact with the wheel rim of the crane;

The rotating binding assembly includes a lower rotating column-gantry binding part, a front reinforcement part of the turntable, a rear reinforcement part of the turntable, and a door frame tensioning cable binding part; the lower rotating column-gantry binding part is used to connect the The lower rotating column and the door frame of the crane; the front reinforcement part of the turntable and the rear reinforcement part of the turntable are used to fix the turntable of the crane; the upper end of the door frame tensioning cable binding part is connected with the crane The turntable is connected, and the lower end is connected with the deck;

The lower rotating column-gantry binding parts are mainly used to fix the relative position between the lower rotating column and the door seat, so as to protect the slewing bearing from the damage of the sea swaying force; the front reinforcement part of the turntable and the rear reinforcement part of the turntable are mainly used to fix the turntable With the gantry, it is protected from the relative displacement of the gantry and the turntable caused by the swaying force of the sea, which in turn produces stress beyond the working conditions and causes the steel plate of the component to tear.

The jib support assembly includes a jib resting frame, a flexible binding assembly and a hinge point binding assembly; the lower end of the jib resting frame is connected to the deck, and the upper end is connected to the boom of the crane; the flexible binding assembly The lower end of the lower end is connected with the deck, and the upper end is connected with the upper end of the jib shelf; the lower end of the hinge point binding assembly is connected with the deck, and the upper end is connected with the hinge point of the jib.

Preferably, 12 struts are arranged symmetrically on the outer side of the mast, among which 8 are arranged along the width direction of the transport ship, and 4 are arranged along the length of the transport ship.

Preferably, the strut includes a spiral tube, and an inserting plate arranged at the end of the spiral tube;

The inserting plate at one end of the spiral tube is welded to the ribs of the door leg partition of the door frame, and the inserting plate at the other end of the spiral tube is welded to the deck.

Preferably, there are 32 symmetrically arranged cart travel stoppers;

The arc edge of the traveling stop of the cart is in contact with the wheel rim, and the bottom edge is welded on the temporary track of the deck.

Preferably, there are 4 groups of the gantry tensioning cable binding parts;

Each group of the gantry tensioning cable binding parts includes a steel strand, an oil cylinder tensioning device, an adjustable screw and a pull plate; the oil cylinder tensioning device is arranged on the deck, and the output of the oil cylinder tensioning device The side is connected to the steel strand rope through the adjustable screw rod, the steel strand rope is connected to the pull plate, and the pull plate is connected to the turntable.

Preferably, the upper end of the arm frame resting frame is provided with an ear plate, a pin shaft and a card shaft plate connected with the arm frame;

The flexible binding assembly includes 4 φ28 steel wire ropes;

The hinge point binding assembly includes a support on the deck, a hook on the support, and a wire rope for connecting the hook and the hinge.

On the other hand, a marine binding method for the transportation of a large portal crane complete machine, the following steps are performed by using the marine binding device for the transportation of a large portal crane complete machine:

S1. According to the carrying of the transport ship, pre-draw the track line of the cart traveling mechanism of the crane, the center line of the jib shelf and the installation line of the strut;

S2. Install the boom support assembly according to the centerline of the drawn boom shelf;

S3. Towing the crane to the transport ship, installing the traveling stopper of the cart, the strut, and the rotating lashing assembly;

S4, laying down the boom so that it is connected to the boom shelf and fixed;

S5. Install the tensioning cable binding parts of the gantry;

S6. After the transport ship arrives at the destination, remove the struts first, loosen the gantry tensioning cable binding parts and the jib resting frame, and disengage the jib; pull the crane to shore;

S7. Bring back the disassembled related parts.

The marine lashing device and method for the transportation of large portal cranes provided by the present invention use large transport ships to load multiple large portal cranes to the user site at the same time, and only need to debug the traveling mechanism of the cart . The impact on the user's site is small, the integrity of the whole machine is good, and the delivery is fast. The cost of using large-scale floating cranes is eliminated, and installation costs are reduced. The use of multiple pairs of welded struts, portal frame tensioning cable binding parts, and jib shelf racks realizes the transportation of large portal cranes.

Description of drawings

Fig. 1 is a schematic diagram of a strut lashing assembly in a marine lashing device of the present invention;

Fig. 2 is a schematic diagram of the rotating lashing assembly in the marine lashing device of the present invention;

Fig. 3 is a schematic diagram of the lower rotating column-gantry lashing parts in the marine lashing device of the present invention, (a) is the main view, and (b) is a schematic diagram of the A direction in (a);

Fig. 4 is a schematic diagram of the reinforcement part at the front of the turntable in the marine lashing device of the present invention;

Fig. 5 is a schematic diagram of the mast tensioning cable binding parts in the marine binding device of the present invention;

Fig. 6 is a schematic diagram of the jib support assembly in the marine lashing device of the present invention.

Detailed ways

In order to better understand the above-mentioned technical solution of the present invention, the technical solution of the present invention will be further described below in conjunction with the drawings and embodiments.

The marine lashing device provided by the present invention for the complete transportation of a large portal crane includes a strut lashing assembly, a rotating lashing assembly and a jib support assembly.

As shown in FIG. 1 , the strut binding assembly includes a strut 1 and a traveling stopper of a cart.

The upper end of the strut 1 is connected with the mast 2 of the crane, and the lower end is connected with the deck 3 of the transport ship.

There are 12 struts 1 arranged symmetrically on the outside of the portal frame 2, among which 8 are arranged along the ship width direction of the transport ship, and 4 are arranged along the ship length direction of the transport ship. 12 pieces of struts 1 are used to overcome the lateral swing, longitudinal swing and upward throwing force produced by the acceleration of sea transportation.

The strut 1 includes a helical tube, and an inserting plate arranged at the end of the helical tube. The plate at one end of the spiral tube is welded to the ribs with the door leg partition of the door frame 2, and the plate at the other end of the spiral tube is welded to the ribs with the deck 3 to ensure the power transmission at the two ends of the strut 1.

There are 32 symmetrically arranged cart travel stops, the arc edge of the cart travel stop is in contact with the wheel rim, and the bottom edge is welded on the temporary track of deck 3.

The raceway beam on the transport ship is a custom-made special tooling. It is laid according to the roll-on gauge (or base distance) of the transport equipment, and the two ends of the beam are rolled to align with the main ribs on the ship. After the raceway beam is laid, the raceway beam and the ship deck are fixed with clamping plates.

As shown in FIG. 2 , the rotary binding assembly includes a lower rotating column-gate frame binding part 4 , a front reinforcement part 5 of the turntable, a rear reinforcement part 6 of the turntable and a door frame tensioning cable binding part 7 .

As shown in Fig. 3, the lower rotating column-gantry binding part 4 is used to connect the lower rotating column and the mast 2 of the crane, mainly to overcome the relative rotation and overturning between the lower rotating column and the mast 2 due to the acceleration of shipping, To protect the slewing bearing from damage caused by sea swaying force.

As shown in Figure 4, the front reinforcement part 5 of the turntable and the rear reinforcement part 6 of the turntable are used to fix the turntable 8 and the gantry of the crane, so as to avoid the relative displacement of the gantry and the turntable caused by the swaying force of the sea, and then produce a load exceeding the operating conditions. The stress caused the steel plate of the component to tear, and the strut 501 of the reinforcement part 5 at the front of the turntable is connected with the upper support ring to reduce the impact of the rotating part on the mast during shipping.

The upper end of the gantry tensioning cable binding part 7 is connected to the turntable 8 of the crane, and the lower end is connected to the deck 3 to overcome the turning force caused by the roll and pitch of the turntable 8 due to the high center of gravity during shipping.

There are 4 groups of gantry tensioning cable binding parts 7.

As shown in FIG. 5 , each group of gantry tensioning cable binding parts 7 includes a steel strand 701 , an oil cylinder tensioning device 702 , a tool rope 703 and a pull plate 704 ; , the output side of the cylinder tensioning device 702 is sequentially connected to the pull plate 704, the tool rope 703 and finally connected to the steel strand 701.

As shown in FIG. 6 , the boom support assembly includes a boom resting frame 9 , a flexible binding assembly 10 and a hinge point binding assembly.

The lower end of the jib shelf 9 is welded to the deck 3, and the upper end is connected to the jib 11 of the crane through the lug plate, the pin shaft and the clamping plate, so as to overcome the force generated by the lateral swing of the transport ship during the sea transportation. .

The lower end of the flexible binding assembly 10 is connected to the deck 3 , and the upper end is connected to the upper end of the boom resting frame 9 .

The flexible binding assembly 10 includes 4 φ28 steel wire ropes, and matching 10t turnbuckles, rope clips, 16t shackles, etc., and uses 4 φ28 steel wire ropes to stabilize and prevent the overturning of the jib shelf 9.

The lower end of the hinge point binding assembly is connected with the deck, and the upper end is connected with the hinge point of the jib 11 .

The hinge point binding assembly includes a support 12 arranged on the deck 3 , a suspension hook provided on the support and a wire rope 13 for connecting the suspension hook and the hinge point.

The present invention also provides a marine binding method for the transportation of the complete large portal crane, and the following steps are performed by using the marine binding device of the present invention for the complete transportation of the large portal crane:

S1. According to the overall structure of the crane, the lower rotating column-gantry binding part 4, the front reinforcement part 5 of the turntable, and the rear reinforcement part 6 of the turntable can be installed in advance and removed after delivery; the gantry tension cable binding part 7 is medium steel The ear plate of the stranded wire is pre-installed in the production stage of the structural parts, sanded and painted together with the main body (the painting process and paint are the same as the main body structure), and will not be dismantled after delivery. After the unloading of the whole machine is completed, the steel stranded wire and the tensioning cylinder Take it back with the ship after dismantling;

S2. According to the loading of the transport ship, draw out the track line of the traveling mechanism of the crane, the center line of the jib shelf 9 and the installation line of the strut 1 in advance to ensure that the strut 1 is aligned with the strong rib under the deck 3, On the deck 3, pre-weld the lug plate (alignment rib) used for binding the tension cable;

S3. According to the drawn center line of the jib resting frame 9, install the jib resting frame 9, and connect the upper opening of the steel wire rope assembly of the anti-overturning flexible binding assembly 10 with the lug welded on the pre-deck of the ship through a 16T shackle, and connect the 10T Adjust the turnbuckle to the longest, and connect it with the ear plate in advance through the shackle, tighten the turnbuckle to make the wire rope tension;

S4, the crane is pulled onto the ship with 4 self-provided winches on the ship, so that the center line of the cart is basically consistent with the center line drawn in advance on the deck 3. Install the running gear of the large vehicle, adopt symmetrical welding, the arc edge is aligned with the wheel rim, and the bottom edge is welded with the raceway beam panel. Weld the two ends of the strut 1 which has been fabricated as a whole with the door frame 2 and the deck 3 respectively (it must be ensured that it is strong to the ship);

S5, put down the arm frame 11, place the weight of the arm frame 11 on the arm frame shelf 9, install the pin shaft and the clamping shaft plate, and fix the arm frame 11;

S6. Steel strands, pull plates, tensioning devices, and adjusting screw rods are assembled into components, and the strokes are all selected to the maximum. Install the steel strand assembly to the pre-welded lifting lug with a hand chain hoist, and use a special tool hollow cylinder to pull the steel strand to 30T;

S7. After the gantry crane is shipped to the user's wharf, remove the strut 1 first, loosen the tensioning oil cylinder in the gantry tensioning device, remove the tensioning oil cylinder from the lifting lug, turn on the power to pull up the boom 11, and make the boom 11 Disengage from the arm rest shelf 9. Use the winch on the ship to pull the crane to the shore, put the cart into the track of the machine, put the door crane into the anchor position, take windproof measures, and then use an 80t truck crane to remove the steel strands in the tensioning device and the rest of the upper machine.

S8. Put the dismantled pin shafts into boxes and the steel strand assemblies into the frame after being coiled, and all the lashing struts are loaded and stacked, and tied up accordingly, and brought with the ship for use.

Those of ordinary skill in the art should recognize that the above embodiments are only used to illustrate the present invention, rather than as a limitation to the present invention, as long as within the scope of the spirit of the present invention, the above-described embodiments Changes and modifications will fall within the scope of the claims of the present invention.

Claims (7)

1. A marine lashing device used for the transportation of a large portal crane, characterized in that it includes a strut lashing assembly, a rotating lashing assembly and a jib support assembly; The strut binding assembly includes a strut and a cart travel stop; the upper end of the strut is connected with the gantry of the crane, and the lower end is connected with the deck of the transport ship; the cart travel stop is set on the transport ship on the deck of the crane and is in contact with the wheel rim of the crane; The rotating binding assembly includes a lower rotating column-gantry binding part, a front reinforcement part of the turntable, a rear reinforcement part of the turntable, and a door frame tensioning cable binding part; the lower rotating column-gantry binding part is used to connect the The lower rotating column and the door frame of the crane; the front reinforcement part of the turntable and the rear reinforcement part of the turntable are used to fix the turntable of the crane; the upper end of the door frame tensioning cable binding part is connected with the crane The turntable is connected, and the lower end is connected with the deck; The jib support assembly includes a jib resting frame, a flexible binding assembly and a hinge point binding assembly; the lower end of the jib resting frame is connected to the deck, and the upper end is connected to the boom of the crane; the flexible binding assembly The lower end of the lower end is connected with the deck, and the upper end is connected with the upper end of the jib shelf; the lower end of the hinge point binding assembly is connected with the deck, and the upper end is connected with the hinge point of the jib. 2. The marine lashing device for the transportation of large portal cranes according to claim 1, wherein 12 pieces of said struts are arranged symmetrically on the outer side of said portal frame, wherein, along the transportation 8 pieces are set in the ship width direction of the ship, and 4 pieces are set along the ship length direction of the transport ship. 3. The marine lashing device for the transportation of large portal cranes according to claim 2, wherein the struts include spiral tubes and inserting plates arranged at the ends of the spiral tubes; The inserting plate at one end of the spiral tube is welded to the ribs of the door leg partition of the door frame, and the inserting plate at the other end of the spiral tube is welded to the deck. 4. The marine lashing device used for the transportation of large portal cranes according to claim 1, characterized in that: 32 pieces of travel stops of the cart are arranged symmetrically; The arc edge of the traveling stop of the cart is in contact with the wheel rim, and the bottom edge is welded on the temporary track of the deck. 5. The marine binding device for the transportation of large portal cranes according to claim 1, characterized in that: the portal frame tensioning cable binding parts are provided with 4 groups; Each group of the gantry tensioning cable binding parts includes a steel strand, an oil cylinder tensioning device, an adjustable screw and a pull plate; the oil cylinder tensioning device is arranged on the deck, and the output of the oil cylinder tensioning device The side is connected to the steel strand rope through the adjustable screw rod, the steel strand rope is connected to the pull plate, and the pull plate is connected to the turntable. 6. The marine lashing device used for the transportation of large portal cranes according to claim 1, characterized in that: the upper end of the boom resting frame is provided with an ear plate, a pin shaft and a clamping shaft plate and the boom connection; The flexible binding assembly includes 4 φ28 steel wire ropes; The hinge point binding assembly includes a support on the deck, a hook on the support, and a wire rope for connecting the hook and the hinge. 7. A marine binding method for the transportation of a large portal crane, characterized in that it is performed by using the marine binding device for the transportation of a large portal crane according to any one of claims 1-6. The following steps: S1. According to the carrying of the transport ship, pre-draw the track line of the cart traveling mechanism of the crane, the center line of the jib shelf and the installation line of the strut; S2. Install the boom support assembly according to the centerline of the drawn boom shelf; S3. Towing the crane to the transport ship, installing the traveling stopper of the cart, the strut, and the rotating lashing assembly; S4, laying down the boom so that it is connected to the boom shelf and fixed; S5. Install the tensioning cable binding parts of the gantry; S6. After the transport ship arrives at the destination, remove the struts first, loosen the gantry tensioning cable binding parts and the jib resting frame, and disengage the jib; pull the crane to shore; S7. Bring back the disassembled related parts.

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