CN118545610A - A quay crane crossing mechanism - Google Patents

Abstract

The invention discloses a bridge crossing mechanism for a quay crane, which relates to the technical field of lifting machinery, and comprises a rear beam and a front beam, wherein the rear beam is provided with a sea side upper cross beam 1, and a winch and a sea side ladder frame are arranged on the land side of the sea side upper cross beam 1, and a pulley block 2 is arranged on the land side of the top cross beam of the sea side ladder frame, and the front beam is gradually raised around the hinge point of the rear beam, and when the head of the front beam and the sea side ladder frame are at the same horizontal position, the quay crane reaches a bridge crossing state, and after the bridge crossing or after the loading and unloading ship arrives at the destination port terminal, the winch is used to reversely release the wire rope to put the sea side ladder frame and the front beam in place, and after the entire quay crane upper structure is put in place, the winch and the entire winding system are dismantled to complete the bridge crossing process, and the mechanism mainly solves the height limit problem of small quay crane crossing, has little impact on the delivery cycle of the quay crane, and has simple arrangement of bridge crossing tooling, no need to separately set tooling support rods, and greatly reduces the cost.

Description

A quay crane crossing mechanism

Technical Field

The invention relates to the technical field of lifting machinery, and in particular to a quay crane crossing mechanism.

Background Art

When the quay crane loading and unloading ship is sailing in the inner harbor channel, it often needs to pass through high-altitude obstacles such as cross-sea bridges or cross-river cables. In order to enable the quay crane to pass these high-altitude obstacles smoothly, the upper structure is usually lowered as a whole or the ladder frame is tilted to the sea side to reduce the navigation height. The upper structure lowering solution is to lower the upper structure of the quay crane as a whole for transportation through special lifting tooling before loading, and then lift the upper structure of the quay crane into place after arriving at the destination port for unloading. This method requires re-electrical debugging after the upper structure is lifted into place, the delivery cycle is long, and the tooling layout is complicated;

The solution for the sea side dumping of the ladder frame is to design the sea side ladder frame and the rear support pipe to be hinged, arrange a pulley on the top of the sea and land side ladder frame, arrange a traction device on the bottom structure of the quay crane or on the deck of the loading and unloading ship, lower the sea side ladder frame by the traction device before crossing the bridge, and pull up and assemble the ladder frame after arriving at the destination port terminal. In this way, in order to support the front beam when the ladder frame dumps to the sea side, it is necessary to arrange a strong tooling support rod between the front beam and the sea side door leg, which has high manufacturing cost and is inconvenient to disassemble and assemble the tooling support rod.

Summary of the invention

In view of the deficiencies in the prior art, the present invention provides a shore crane crossing mechanism, which solves the technical problems of the prior shore crane crossing mechanism, such as long delivery cycle, complex tooling arrangement, high manufacturing cost and inconvenient assembly and disassembly of the tooling arrangement due to the strong tooling struts arranged between the front beam and the sea side door legs. The shore crane crossing mechanism realizes the tilting of the sea side ladder frame toward the land side by the retraction and release of the wire rope. When the sea side ladder frame tilts toward the land side, on the one hand, it drives the pull rod 1 and the front beam to move, and on the other hand, the two connecting rods of the rear support pipe of the sea side ladder frame fold with each other. The sea side ladder frame tilts around the connection hinge point between the sea side ladder frame and the sea side upper cross beam 1, and the front beam gradually rises around the hinge point of the rear beam. When the front beam head and the sea side ladder frame are at the same horizontal position, the shore crane reaches the crossing state, and the bridge is ready to be crossed. After the loading and unloading ship arrives at the destination port terminal, the winch is used to release the wire rope in the reverse direction to put the sea side ladder frame and the front beam into place. After the entire shore crane superstructure is in place, the winch and the entire winding system are removed to complete the bridge crossing process. This mechanism mainly solves the height limit problem of small shore cranes crossing the bridge, and has a small impact on the shore crane delivery cycle. The bridge crossing tooling is simple to arrange, and there is no need to set up tooling struts separately, which greatly reduces the cost. Pulley block 1 and pulley block 2 are connected to the balancing shaft through the pulley block connecting plate 1, and the balancing shaft is connected to the ear plate 2 on the sea side ladder frame through the balancing shaft connecting plate 2. The load of the pulley block (pulley block 1 and pulley block 2) is transmitted to the ear plate 2 on the sea side ladder frame in a multi-stage dispersed form. On the one hand, the load is more balanced, and on the other hand, the compact layout of the ear plate 2 is conducive to reducing the bending moment of the shaft.

To achieve the above objectives, the present invention is implemented through the following technical solutions:

A shore bridge crossing mechanism comprises a rear beam and a front beam, wherein the rear beam is provided with a sea-side upper cross beam 1, a winch and a sea-side ladder frame are arranged on the land side of the sea-side upper cross beam 1, a pulley block 2 is arranged on the land side of the top cross beam of the sea-side ladder frame, a pulley block 1 is arranged at the node plate at the lower end of the rear support tube of the sea-side ladder frame, wherein a support plate is fixedly installed on the end of the sea-side ladder frame close to the pulley block 1, a steel wire rope is wound on the winch reel, and the steel wire rope is wound back and forth between the pulley block 1 and the pulley block 2, and is finally fixed on the support plate, wherein a pull rod 1 is connected between the sea-side ladder frame and the front beam, the bottom end of the sea-side ladder frame is hingedly connected to the upper end of the sea-side upper cross beam 1, and the front beam is hingedly connected to the opposite ends of the rear beam.

Preferably: a base is installed on the upper cross beam 1 on the sea side, the winch is fixed on the base, a latch 1 is provided on the base, and an ear plate 1 is provided on the upper cross beam 1 on the sea side, wherein the base is fixed to the ear plate 1 of the upper cross beam 1 on the sea side through the latch 1.

Preferably, the pulley block 1 and the pulley block 2 both include a pulley block connecting plate 1, a balancing shaft, a pulley shaft and a balancing shaft connecting plate 2.

Preferably, two ear plates 2 are fixedly mounted on the sea side ladder frame, and each of the balancing shafts is connected to an ear plate 2 via a balancing shaft connecting plate 2.

Preferably: a support rod is fixedly connected between the sea side upper cross beam 1 and the base.

Preferably: the connection between the sea side ladder frame and the sea side upper cross beam is connected by a second pin, wherein the upper and lower ends of the rear support tube of the sea side ladder frame are connected by a third pin, and a pin point is arranged in the middle of the rear support tube.

Preferably, pulley supports are arranged at the top of the sea side ladder frame and at the node plate at the lower end of the rear support pipe.

Preferably, the pulley block 1 and the pulley block 2 are respectively installed on pulley supports.

Preferably: a second land side upper cross beam is fixedly mounted on the rear beam.

The advantages of the present invention are as follows: 1. The tilting of the sea-side ladder frame toward the land-side is achieved by the retraction and release of the steel wire rope. When the sea-side ladder frame tilts toward the land-side, on the one hand, it pulls the pull rod 1 and the front beam to move, and on the other hand, the two connecting rods of the rear support pipe of the sea-side ladder frame fold mutually. The sea-side ladder frame tilts around the connection hinge of the sea-side ladder frame and the sea-side upper cross beam 1, and the front beam gradually rises around the hinge of the rear beam. When the head of the front beam and the sea-side ladder frame are at the same horizontal position, the quay crane reaches the bridge-crossing state. After the bridge is crossed or the loading and unloading ship arrives at the destination port terminal, the steel wire rope is released in the reverse direction by the winch to put the sea-side ladder frame and the front beam in place. After the entire quay crane upper structure is in place, the winch and the entire winding system are removed to complete the bridge-crossing process. The mechanism mainly solves the height limit problem of small quay cranes crossing the bridge, has little impact on the delivery cycle of the quay crane, has a simple arrangement of the bridge-crossing tooling, does not need to set up tooling support rods separately, and greatly reduces the cost.

Second, pulley block 1 and pulley block 2 are connected to the balancing shaft through pulley block connecting plate 1, and the balancing shaft is connected to ear plate 2 on the sea side ladder frame through balancing shaft connecting plate 2. The load of the pulley block (pulley block 1 and pulley block 2) is transmitted to ear plate 2 on the sea side ladder frame in a multi-stage dispersed form. On the one hand, the load is more balanced, and on the other hand, the compact layout of ear plate 2 is conducive to reducing the bending moment of the shaft.

BRIEF DESCRIPTION OF THE DRAWINGS

The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

FIG1 is a structural diagram of the overall structure of the quay crane bridge crossing mechanism of the present invention;

FIG2 is a structural diagram of a steel wire rope winding according to the present invention;

FIG3 is a structural diagram of the installation of the winch of the present invention;

FIG4 is a structural diagram of the balancing shaft connecting plate 2 of the present invention;

FIG5 is a structural diagram of a pulley shaft of the present invention;

FIG6 is a structural diagram of the quay crane in the state of crossing the bridge according to the present invention;

FIG. 7 is a structural diagram of a pulley block connecting plate 1 of the present invention.

Legend: 1. Winch; 2. Wire rope; 3. Pulley block 1; 4. Pulley block 2; 5. Ladder frame on the sea side; 6. Upper crossbeam 1 on the sea side; 7. Ear plate 1; 8. Support rod; 9. Pulley block connecting plate 1; 11. Balance shaft; 12. Pulley shaft; 13. Upper crossbeam 2 on the land side; 14. Rear beam; 15. Balance shaft connecting plate 2; 17. Ear plates 2; 19. Front beam; 21. Pull rod 1.

DETAILED DESCRIPTION

The embodiment of the present application provides a quay crane crossing mechanism, which effectively solves the problems of the existing quay crane crossing mechanism, such as long delivery cycle, complex tooling arrangement, high manufacturing cost by arranging strong tooling struts between the front beam and the sea side door legs, and inconvenient disassembly and assembly of the tooling struts.

Embodiment: As shown in Figures 1, 2, 3, 4, 5, 6 and 7, the technical solution in the embodiment of the present application effectively solves the technical problems that the existing quay crane bridge crossing mechanism has a long delivery cycle, a complex tooling arrangement, a strong tooling brace arranged between the front beam and the sea side door leg, a high manufacturing cost, and inconvenient disassembly and assembly of the tooling brace. The overall idea is as follows:

In view of the problems existing in the prior art, the present invention provides a shore bridge crossing mechanism, including a rear beam 14 and a front beam 19, wherein the rear beam 14 is provided with a sea-side upper cross beam 16, and a winch 1 and a sea-side ladder frame 5 are arranged on the land side of the sea-side upper cross beam 16, and a pulley block 2 4 is arranged on the land side of the top cross beam of the sea-side ladder frame 5, and a pulley block 3 is arranged at the node plate at the lower end of the rear support pipe of the sea-side ladder frame 5, wherein a support plate is fixedly installed on the end of the sea-side ladder frame 5 close to the pulley block 3, and a steel wire rope 2 is wound on the reel of the winch 1, and the steel wire rope 2 is wound back and forth between the pulley block 3 and the pulley block 2 4, and finally fixed on the support plate, wherein a pull rod 21 is connected between the sea-side ladder frame 5 and the front beam 19, and the bottom end of the sea-side ladder frame 5 is hingedly connected to the upper end of the sea-side upper cross beam 16, and the front beam 19 is connected to The two opposite ends of the rear beam 14 are hingedly connected, a base is installed on the upper cross beam 16 on the sea side, the winch 1 is fixed on the base, a latch 1 is provided on the base, an ear plate 7 is provided on the upper cross beam 16 on the sea side, wherein the base is fixed to the ear plate 17 of the upper cross beam 16 on the sea side through the latch 1, the pulley block 13 and the pulley block 24 both include a pulley block connecting plate 19, a balancing shaft 11, a pulley shaft 12 and a balancing shaft connecting plate 2 15, two ear plates 2 17 are fixedly installed on the sea side ladder frame 5, each balancing shaft 11 is connected to the ear plate 2 17 through a balancing shaft connecting plate 2 15, a support rod 8 is fixedly connected between the upper cross beam 16 on the sea side and the base, the sea side ladder frame 5 and the sea side upper cross beam 16 are connected at the connection point by a pin shaft 2, wherein the upper and lower ends of the rear support pipe of the sea side ladder frame 5 are connected by a pin shaft 3, and a The pin point, the pulley support is arranged at the top of the sea-side ladder frame 5 and the node plate at the lower end of the rear support pipe, the pulley block 1 3 and the pulley block 2 4 are respectively installed on the pulley support, and the land-side upper beam 2 13 is fixedly installed on the rear beam 14. When the shore crane needs to pass a ship, the winch 1 winds the wire rope 2, and the sea-side ladder frame 5 is tilted toward the land side by the retraction and release of the wire rope 2. When the sea-side ladder frame 5 tilts toward the land side, on the one hand, it pulls the pull rod 1 21 and the front beam 19 to move, and on the other hand, the two connecting rods of the rear support pipe of the sea-side ladder frame 5 fold with each other, and the sea-side ladder frame 5 tilts around the sea-side ladder frame 5 and the sea-side upper beam 1 6 connection hinge point, and the front beam 19 is gradually raised around the hinge point of the rear beam 14. When the head of the front beam 19 and the sea-side ladder frame 5 are in the same horizontal position, the shore crane reaches the bridge-crossing state, and after crossing the bridge or the loading and unloading ship arrives at the destination port terminal. Then, the wire rope 2 is released in the reverse direction through the winch 1 to put the sea-side ladder frame 5 and the front beam 19 in place. After the entire shore crane superstructure is in place, the winch 1 and the entire winding system are removed to complete the bridge crossing process. This mechanism mainly solves the height limit problem of small shore crane crossing the bridge, has little impact on the shore crane delivery cycle, has a simple layout of the bridge crossing tooling, and does not require separate tooling support rods, which greatly reduces the cost. The pulley block 1 3 and the pulley block 2 4 are both connected to the balance shaft 11 through the pulley block connecting plate 1 9, and the balance shaft 11 is connected to the ear plate 2 17 on the sea-side ladder frame 5 through the balance shaft connecting plate 2 15. The load of the pulley block (pulley block 1 3 and pulley block 2 4) is transmitted to the ear plate 2 17 on the sea-side ladder frame 5 in a multi-stage dispersed form. On the one hand, the load is more balanced, and on the other hand, the compact layout of the ear plate 2 17 is conducive to reducing the bending moment of the shaft.

Working principle:

In the first step, as shown in FIG. 1 , when the quay crane needs to pass a ship, the winch 1 winds the steel wire rope 2, and the sea-side ladder frame 5 is tilted toward the land side by the retraction and release of the steel wire rope 2. When the sea-side ladder frame 5 tilts toward the land side, on the one hand, the pull rod 21 and the front beam 19 are pulled to move, and on the other hand, the two connecting rods of the rear support pipe of the sea-side ladder frame 5 are folded with each other, and the sea-side ladder frame 5 tilts around the connection hinge of the sea-side ladder frame 5 and the sea-side upper cross beam 6, and the front beam 19 is gradually raised around the hinge of the rear beam 14;

In the second step, as shown in FIG6 , when the head of the front beam 19 and the sea-side ladder frame 5 are at the same horizontal position, the quay crane reaches the bridge-crossing state. After the bridge is crossed or the loading and unloading ship arrives at the destination port, the wire rope 2 is reversed by the winch 1 to put the sea-side ladder frame 5 and the front beam 19 in place. After the entire quay crane superstructure is in place, the winch 1 and the entire winding system are removed to complete the bridge-crossing process. This mechanism mainly solves the height limit problem of small quay cranes crossing the bridge, has little impact on the quay crane delivery cycle, and has a simple arrangement of the bridge crossing tooling, and does not require a separate tooling support rod, which greatly reduces the cost;

In the third step, as shown in Figures 4, 5 and 7, pulley block 1 3 and pulley block 2 4 are connected to the balancing shaft 11 through the pulley block connecting plate 1 9, and the balancing shaft 11 is connected to the ear plate 2 17 on the sea side ladder frame 5 through the balancing shaft connecting plate 2 15. The load of the pulley block (pulley block 1 3 and pulley block 2 4) is transmitted to the ear plate 2 17 on the sea side ladder frame 5 in a multi-stage dispersed form. On the one hand, the load is more balanced, and on the other hand, the compact layout of the ear plate 2 17 is conducive to reducing the bending moment of the shaft.

Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims (9)

1. A quay bridge crossing mechanism comprising a rear girder (14) and a front girder (19), characterized in that: the marine crane is characterized in that a marine upper beam I (6) is arranged on the rear girder (14), a winch (1) and a marine ladder frame (5) are arranged on the land side surface of the marine upper beam I (6), a pulley block II (4) is arranged on the land side surface of the top beam of the marine ladder frame (5), and a pulley block I (3) is arranged at a node plate at the lower end of a rear supporting tube of the marine ladder frame (5);

the end part of the sea side ladder frame (5) close to the pulley block I (3) is fixedly provided with a supporting plate, a steel wire rope (2) is wound on a winding shaft of the winding machine (1), the steel wire rope (2) is wound back and forth between the pulley block I (3) and the pulley block II (4), and finally the steel wire rope is fixed on the supporting plate;

The marine ladder frame (5) is connected with a first pull rod (21) between the marine ladder frame and a front girder (19), the bottom end of the marine ladder frame (5) is hinged with the upper end of a first marine upper cross beam (6), and the two opposite ends of the front girder (19) and a rear girder (14) are hinged.

2. A quay bridge crossing mechanism according to claim 1, wherein: a base is arranged on the sea side upper beam I (6), the winch (1) is fixed on the base, a first bolt is arranged on the base, and a first lug plate (7) is arranged on the sea side upper beam I (6);

The base is fixed with an ear plate I (7) of a sea side upper cross beam I (6) through a bolt I.

3. A quay bridge crossing mechanism according to claim 1, wherein: the pulley block I (3) and the pulley block II (4) comprise a pulley block connecting plate I (9), an equalizing shaft (11), a pulley shaft (12) and an equalizing shaft connecting plate II (15).

4. A quay bridge crossing mechanism according to claim 3, wherein: two second ear plates (17) are fixedly arranged on the sea-side ladder frame (5), and each balance shaft (11) is connected with the second ear plates (17) through balance shaft connecting plates (15) respectively.

5. A quay bridge crossing mechanism according to claim 2, wherein: a supporting rod (8) is fixedly connected between the sea side upper beam I (6) and the base.

6. A quay bridge crossing mechanism according to claim 1, wherein: the connection part of the sea side ladder frame (5) and the sea side upper cross beam I (6) is connected by a pin shaft II;

The upper end and the lower end of the rear supporting tube of the sea side ladder-shaped frame (5) are connected by a pin shaft three, and a pin shaft point is arranged in the middle of the rear supporting tube.

7. A quay bridge crossing mechanism according to claim 6, wherein: and pulley supports are arranged at the top of the sea side ladder frame (5) and the node plate at the lower end of the rear supporting tube.

8. A quay bridge crossing mechanism according to claim 7, wherein: the pulley block I (3) and the pulley block II (4) are respectively arranged on the pulley support.

9. A quay bridge crossing mechanism according to claim 1, wherein: the rear girder (14) is fixedly provided with a land side upper cross beam II (13).