KR20000074278A - Moving system of parts in circulating type gantry crane - Google Patents

Abstract

PURPOSE: An operation part moving system of a cyclic gantry crane moves swiftly a trolley and a crane, thereby improving the loading and unloading speed and efficiency of a container. CONSTITUTION: A moving system includes a pair of first and second steel wires(60), the trolley(50), the spreader(20), a hoist and an elevator(80). The first and second steel wires(60) are connected with a power source and then form a closed loop moving a gantry crane, are positioned at the lower portion of a hoist(40) and then rotate inside a boom(100). The trolley(50) includes a steel wire holder(52), an unlocker(56), and a wheel(59). The pairs of steel wire holders(52) are formed at the upper portion of the trolley(50) and holds the pair of first(60) or second steel wires(60). The unlocker(56) releases coupling between the steel wire(60) and the holder(52). The wheel(59) rolls on a moving track of the boom(100). The elevator(80) is positioned between the first steel wire(60) and the second steel wire.

Description

Moving system of parts in circulating type gantry crane

The present invention relates to a circulating gantry crane or transfer crane carrying a container or the like, or a crane having a similar function and operation structure, and specifically, a crane having a structure in which a trolley, a hook, and a spreader are separated and coupled to circulate a boom. It relates to a mobile system in.

Conventionally used container unloading gantry crane is to move the boom connected to the main tower in a state in which the trolley and the spreader are connected to the steel wire in the rotational movement. Therefore, the crane must be positioned on the container to be towed and the unloading position above, and the moving container must be stopped after moving so that the movement of the trolley must be precisely adjusted. In addition, the conventional crane has a disadvantage in that the work efficiency such as the unloading speed and the unloading efficiency is very low since the towing of the container on the land side and moving to the sea side unloads the container and then returns to the land side.

On the contrary, in the case of the horizontally cyclic crane of Korean Patent No. 134235 or the Korean Patent No. 143699 Vertical Cyclic Crane, the trolley and spreader continuously circulate the boom, and thus, compared with the conventional unloading method. There is an advantage of improving the processing speed by more than four times. Therefore, the trolley and the spreader, which are not present in the conventional gantry crane, must be separated from the hoist and the hook and have a mobile system that can move independently of the boom.

The present invention is designed to improve such a conventional problem, in order to improve the unloading speed and efficiency when unloading the container is carried by the trolley and the spreader only and towing and unloading of the container is made by the hoist, When transporting the container, the trolley and the spreader are connected to the turning steel wire so that the trolley itself can be moved without power, and the trolley and crane are moved quickly and completely apart from the towing and unloading of the container by the hoist. Its main purpose is to allow for significant improvements in speed and efficiency.

1 is a schematic view of a gantry crane according to the present invention;

Figure 2 is a state diagram showing the process of the gantry crane towing the container according to the present invention;

3 is a state diagram showing a process for unloading the container gantry crane according to the present invention;

4 is a layout view of each component of the gantry crane;

5 is a state diagram showing the operating relationship between the trolley and the hoist;

6 is a layout view of the steel wire.

Movement system of the operating part of the circulating gantry crane according to the present invention for achieving the above object,

Spreader 20 to tow the container, hook 30 to engage the spreader, hoist 40 to lift the hook, and trolley 50 to move along the boom 100 in combination with the spreader tow the container is mutually For gantry cranes that are separated in combination:

It is formed on the trolley track 102 formed on the lower inner side to form the trajectory of the trolley 50, the hoist track 104 formed on the inner side to form the trajectory of the hoist 40, and is formed on the upper surface A pair of elongated left and right booms 100 including a spreader track 106 forming a trajectory of the spreader 20;

A pair of elongated left and right first steel wires 60 connected to a power source to form a closed loop for moving the gantry crane, and disposed under the hoist to rotate in the boom 100;

A pair of elongated left and right second steel wires 70 connected to a power source to form a closed loop for moving the gantry crane and disposed above the hoist to rotate in the boom 100;

Two pairs of front and rear are formed in the upper portion of the trolley, the steel wire holder 52 holding the first steel wire 60 or the second steel wire 60 and the holder 52 connected to the steel wire 60 and the holder 52. Trolley (50) comprising an unlocker (56) for releasing the coupling) and a wheel (59) for rolling the trolley track (102) of the boom (100);

A pair of wheels 22 formed at left and right sides of the lower side, the wheels rolling the spreader tracks 106;

An inclined guide 42 for guiding the unlocker 56 of the trolley at the lower front end and the rear end, and a movable and detachable traction with the trolley 50 for pulling and discharging the trolley 50 downward; Hoist 40 in which sphere 44 is formed; And

A box-type elevator 80 disposed between both ends of the first steel wire 60 and the second steel wire 70 disposed up and down, the height being higher than that of the trolley and the spreader assembly and the width being wider than the boom spacing. ,

When the steel wire holder 52 of the trolley 50 to which the spreader 20 is coupled to the lower portion enters the hoist 40 while moving in combination with the first steel wire 60, the wheel of the holder presser 56 ( 54 is pressed downward while passing through the guide 42 in the lower portion of the hoist 40 to release the combination of the steel wire holder 52 and the steel wire 60 to stop the movement of the trolley, the trolley 50 is hoist 40 When moving away from the bottom of the steel wire holder 52 and the steel wire 60 is coupled to move the trolley 50, the movement between the first steel wire 60 and the second steel wire 70 is the elevator 80 When the trolley 50 and the spreader 20 are coupled to the second steel wire 70 of the upper part and move, the wheel 22 of the lower part of the spreader 20 rolls the trajectory of the boom 100. It is characterized by moving.

In addition, in the movement system according to the present invention, the holder 52 is a pair of gripping portions 52-1 which vertically fit the steel wires 60 and 70 and a pair of horizontal bodies 52-2 connected to the gripping portions. It is preferable that it is made.

In addition, in the present invention, the unlocker 56 is a presser 57 for pressing the body on the upper portion of the body 52-2 of the holder 52 and the wheel 58 mounted to the upper end of the presser 57. When the trolley 50 enters under the hoist 40, the wheel 58 is pushed down by the guide 42 of the hoist, and the presser 57 presses the holder body 52-2. By holding the gripper 52-1, it is preferable that the coupling of the holder 52 and the steel wire 60 be released.

Moreover, in this invention, the guide (82) which can move back and forth as a hook-type at the lower end of the said elevator (80) is formed, and the guide (82) engages the trolley (50).

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing the overall configuration of the gantry crane to which the present invention is applied.

As shown, the gantry crane to which the present invention is applied moves the circulation path of the closed loop along the boom 100 in a state in which the plurality of trolleys 50 and the spreader 20 are coupled, and the hoist 40 of the container It is in the towing and unloading position. The closed loop through which the trolley circulates and moves can be applied either horizontally or vertically, but in the present invention, vertically cyclically.

The boom 100 is usually provided with two hoists 40. One hoist is located on the land side and the other hoist is located on the sea side. These hoists 40 can be moved in the direction of arrow a if necessary. The hoist is preferably positioned on top of the position to unload the container 10.

Hook 30 is connected to the hoist 40. The hook 30 may be lifted by an operation of the machine room, and as described later, the hook 30 may be lifted and coupled to the spreader 20. The container is towed by the spreader 20 and moved to the required position by the trolley 50 to be unloaded. The plurality of trolleys 50 moving along the boom 100 are coupled to the moving steel wires 60 and 70 instead of separate power and move along the turning path.

For transporting the container 10, the trolley 50, the spreader 20, and the hook 30 are repeatedly coupled and separated from each other.

2 and 3 are schematic diagrams for explaining the unloading and transporting operation of the container while the components of the gantry crane in accordance with the present invention repeat the separation, Figure 2 is arriving at the bottom of the hoist 40 is located on the land side Figure 3 is a view showing the operation of the trolley and the spreader starting, Figure 3 is a view showing the operation of the trolley and the spreader arriving at the bottom of the hoist positioned on the sea side. Although several hoists 40 are shown for convenience of description, only one actually operates.

As shown in FIG. 2, the trolley 50 moving remotely from a separate cab (not shown) and moving in the direction of the arrow b along the boom 100 and the spreader 20 coupled to the lower portion of the trolley are on land. It reaches the lower part of the side hoist 40 and stops. Normally, the land-side hoist 40 is standing on the vertical upper portion of the container 10 and waiting. When the trolley 50 is positioned below the hoist, the hook 30 descends through the trolley 50 to engage with the spreader 20, and the trolley 50 and the spreader 20 are separated. The lifting movement of the hook is adjusted in a separate cab (not shown). The hook 30 continues to descend with the spreader 20 and descends to the upper surface of the container 10, so that the container 10 is coupled to the spreader 20. The movement of the container to the spreader is also operated in a separate cab.

When the container 10 is coupled to the spreader 20, the hook 30 is raised. When the hook continues to rise and the spreader 20 is positioned directly below the trolley 50, the trolley 50 and the spreader 20 are coupled and the hook 30 and the spreader 20 are separated. The hook 30 is separated from the spreader 20 and continues to rise to the top of the trolley 50. The trolley 50 then moves in the c direction with the spreader and the container.

As shown in FIG. 3, the trolley 50 moves to c direction and moves below the marine side hoist 40 located on the unloading side. When the trolley 50 is positioned below the hoist 40, the hook 30 is lowered from the hoist 50. The hook 30 passes down the trolley 50 to the top of the spreader 20. When the hook 30 contacts the upper surface of the spreader 20, the hook 30 and the spreader 20 are coupled, and the trolley 50 and the spreader 20 are separated. Thereafter, when the hook 30 continues to descend, the spreader 20 and the container 10 are pulled by the hook 30 and lowered together. When the hook 30 continues to descend and descends to the unloading position of the ship, the container 10 is separated from the spreader 20 and loaded at the unloading position. The empty spreader 20 which lowers the container is lifted together with the hook 30, coupled to the trolley 50, and separated from the hook 30. Therefore, the empty spreader 20 which lowers the container is coupled to the trolley 50 and moves in the d direction along the moving trajectory. As will be described later, the trolley 50 and the spreader 20 moved in the d direction and almost moved to the end of the boom stand 100 are uncoupled from the steel wire at the end of the steel wire 60 and lifted up on the elevator 80. After the trolley is combined with the steel wire 70 and moved to the land side and lowered by the elevator 80, the trolley is bitten by the steel wire 70 to form a closed loop operation of repeating the operations of FIGS. Can be repeated (see FIG. 6).

As described above, in the gantry crane according to the present invention, the trolley, the spreader, and the hook are repeatedly coupled and separated from each other, and only the trolley 50 and the spreader 20 are engaged with the steel wires 60 and 70 so that the trajectory is fast. It is supposed to move to. Therefore, the gantry crane of the present invention must be provided with a separate combined movement system of the steel wires 60 and 70 and the trolley.

Figure 4 is a layout view of each element of the gantry crane in accordance with the present invention.

As shown in the figure, trolley tracks 102 are formed on both inner bottom surfaces of the boom 100 to form a moving path of the trolley 50, and on both inner surfaces of the boom 100 of the hoist 40. The hoist track 104 is formed to form a moving path, and there is a power line track (not shown) for supplying power to the hoist, and the spreader 20 is driven at the top of the boom to return the trolley 50. A spreader track 106 can be formed. Hoists, trolleys and spreaders travel on these tracks. That is, the hoist 40 is mounted in the middle of the boom 100 so as to be movable, the hook 30 is suspended from the hoist 40 so as to be liftable, and the trolley 50 is movable in the lower part of the boom 100. Is mounted, the spreader 20 is disposed under the hook 30, the container 10 is disposed below the spreader 20 is coupled to the spreader. As shown, the trolley 50 and the spreader 20 disposed below the hoist 40 are disposed when the trolley 50 and the spreader 20 are engaged with the first steel wire 60 and move along the movement paths of FIGS. 2 and 3, and the hoist 40. The trolley 50 and the spreader 20 disposed on the upper part are engaged with the second steel wire 70 (not shown) to move and rotate the upper part of the boom 100.

Wheels 59 for moving along the track of the boom 100 are mounted on the lower side of the trolley 50. In addition, a steel wire holder 52 detachably attached to the first steel wire 60 is formed to protrude from the left and right of the trolley to the upper portion of the wheel 59. The steel wire holder 52 is composed of a pair of gripping portions 52-1 engaging the steel wire 60 and a pair of bodies 52-2 formed horizontally in the gripping portion to engage the steel wire 60 with the upper and lower portions. The pair of bodies 52-2 of the steel wires have a predetermined interval. The unlocker 56 for releasing the coupling between the holder 52 and the steel wires 60 and 70 is disposed on the upper portion of the body of the steel wire holder 52. The unlocker 56 is composed of a presser 57 and a wheel 58 of the upper end which are in contact with the body 52-2 of the steel wire holder 52 at a right angle. Therefore, when the presser 57 presses the body 52-2, the grip portion 52-1 is opened to uncouple the steel wire 60 and the steel wire holder 52, so that the trolley 50 is removed from the steel wire 60. Are separated. An enlarged portion of FIG. 4 shows a primary state in which the combination of the wire holder 52 and the wire 60 is loosened.

As described above, the hook 30 is suspended from the hoist 40 and moved up and down, and is separated from the trolley and the spreader when the trolley 50 and the spreader 20 move. Thus, the hook and hoist do not interfere with the movement of the spreader and trolley.

The spreader 20 moves in conjunction with the trolley 50. Wheels 22 are mounted on both front and rear ends of the lower and lower sides of the spreader 20. The guider 24 is mounted to the outside of the wheel 22. The guider 24 serves to guide the container 10 when the container 10 is coupled to the spreader 20. Therefore, when the spreader 20 moves the boom 100, the guider 24 maintains the folded state in order to not interfere with the movement. The wheels 22 of the spreader 20 roll along the tracks 106 above the boom 100 when the trolley and the spreader unload the container and then return to the container towing position, ie back to the state of FIG. 2. Exercise. The upper part of FIG. 4 shows a state in which the returner 20 and the trolley 50 are coupled so that the wheel 22 rolls the track 106 and the guider 24 is folded upward. On the other hand, if the height and position of the track 106 is changed, it is also possible to move using the wheel of the trolley rather than the wheel of the spreader.

5 is a side cross-sectional view of the trolley 50 entering the lower hoist 40 and a side cross-sectional view of the trolley 50 and the spreader 20 coupled along the upper track 106 of the boom. . The trolley 50 enters under the hoist 40 while the steel wire holder 52 is engaged with the steel wire 60 and travels along the track 102. Steel wire 60 is located at the bottom of the boom 100 to form a closed loop is rotating at a constant speed. Therefore, when the trolley 50 is engaged with the steel wire, it always moves at the same speed as the steel wire. The spreader 20 is coupled to the lower portion of the trolley 50. On the top of the steel wire holder 52, an unlocker 56 with wheels 58 is disposed.

The trolley 50 and the spreader 20 engaged with the steel wire 60 are in contact with the guide 42 while approaching under the hoist 40 while moving to the right by the movement of the steel wire 60. The guide 42 is disposed before and after the lower end of the hoist 40 and is inclined upward. Therefore, when the trolley 50 enters under the hoist, the wheels 58 of the unlocker 56 of the trolley are pushed down while rolling along the guide 42. In this case, the presser 57 connected to the wheel 58 of the unlocker 56 presses the holder 52 body 52-2 to open the grip portion 52-1 of the holder 52. Thus, the holder 52 is separated from the steel wire 60 (see FIG. 4). When the trolley 50 is located under the hoist, the holder 52 and the steel wire 60 are always separated. The trolley 50 separated from the steel wire 60 stops moving. Thereafter, the trolley 50 is towed by the tow 44 mounted at the bottom of the hoist 40 to be positioned. As described above, the spreader and the hook are coupled in the state where the trolley is in this position, and the trolley and the spreader are separated to engage and pull the container.

When the towing operation of the container 10 is completed, the trolley 50 moves away from the hoist 40 to the right, and this movement is performed while the trolley waiting at the rear moves to push the trolley under the hoist forward. .

When the wheel 58 of the unlocker 56 of the trolley 50 moves away from the lower side of the hoist 40 and moves out of the guide 42 on the right side of the hoist, the unlocker 56 moves upward to move the steel wire holder 52. ) Is coupled to the steel wire 60 again. Therefore, the container 10, the spreader 20 and the trolley 50 combining the containers are simultaneously moved to the unloading position of FIG. 3 at the same speed as the steel wire 60. The trolley, which has reached the hoist in the unloading position of FIG. 3, is uncoupled from the steel wire 60 in the same manner as described above to unload the container.

FIG. 6 is a side view illustrating an arrangement of two steel wires 60 and 70 in the boom 100 of the gantry crane according to the present invention, and an elevator 80 for moving the trolley and the spreader between the two steel wires. .

As shown, the first steel wire 60 is disposed long in the lower portion of the boom 100 to form a closed loop, and the second steel wire 70 is disposed longer in the upper portion of the boom 100 to form a closed loop. An elevator 80 is disposed between both ends of the two steel wires 60 and 70. The first steel wire 60 is a steel wire for moving the trolley so that the trolley and the spreader move to the state shown in Figs. 2 and 3, and the trolley and the spreader have completed the unloading work. It is a steel wire to return to its original position. Since these steel wires should be arranged in a straight line, it is preferable that an appropriate support roller 72 is disposed in the middle to prevent sagging.

The elevator 80 is higher in height than the combination of the trolley and the spreader, the width is preferably in the form of a box similar to the width of the boom 100. The trolley and the spreader, which are engaged with the first steel wire 60 and continue in the d direction of FIG. 3 and reach the right end of the steel wire, are separated from the steel wire and are loaded on the elevator 80 and are lifted in the direction of the arrow A. FIG. When the elevator 80 is raised, the trolley is lowered from the elevator and engaged with the second steel wire 70 to move with the spreader at the same speed as the second steel wire. The wheel 59 of the upper trolley 50 moves along the trolley track 102 below the boom 100 in the engaged state with the first steel wire 60, but the lower wheel in the engaged state with the second steel wire 70. Wheels 22 of spreader 20 move along track 106 above boom 100 (see FIG. 4). Therefore, when the trolley and the spreader are coupled to the steel wire 70 and return to their original positions, the trolley and the spreader may move without being caught by the hoist 40 disposed in the middle of the boom 100. The trolley and the spreader moved to the left end of the boom 100 by the steel wire 70 are lowered in the direction of the arrow B by another elevator 80 to be engaged with the steel wire 60. Thereafter, the operations of FIGS. 2 and 3 are repeated.

The trolley 50 reaches the end of the steel wire 60 and moves to the end of the boom to be stopped in front of the elevator 80. At this time, the hook-shaped guide 82 which is installed at the bottom of the elevator 80 and is movable back and forth is coupled to the trolley 50 to tow the trolley into the elevator to position it. Subsequently, the elevator 80 is raised or lowered, and the guide port 82 pushes the trolley to rest on the boom to engage the steel wires 60 and 70.

As such, a plurality of trolleys installed in the boom 100 continue to move the boom to perform container towing and unloading. In addition, in the above description, the land side is described as the container towing side and the sea side as the unloading side, but the present invention can be similarly applied to the reverse case.

The drawings and specification are merely exemplary of the invention, which are used for the purpose of illustrating the invention only and are not intended to limit the scope of the invention as defined in the appended claims or claims. According to the present invention, the trolley, the hook, and the spreader are coupled to each other so that the configuration of the trolley and the spreader to move the boom will be construed as being included in the scope of the present invention.

According to the present invention, the trolley and the spreader can be combined with the trolley and the spreader to the hoist and the hook in which the trolley and the spreader move along the boom while the spreader, the hook and the trolley are repeatedly coupled to each other. . In addition, since the trolley and the spreader circulates the boom, it is impossible to control the power supply or the movement, but even without the power unit or the control unit, all the operations and operations necessary for the loading and unloading operation are possible. In addition, since the hoist is always in a fixed position or in a necessary position in advance, it is not necessary to precisely control the towing and unloading like conventional cranes, and the shaker of the spreader is fundamentally solved. This savings can dramatically improve the speed of unloading and transporting containers.

Claims (4)

Spreader 20 to tow the container, hook 30 to engage the spreader, hoist 40 to lift the hook, and trolley 50 to move along the boom 100 in combination with the spreader tow the container is mutually For gantry cranes that are separated in combination: It is formed on the trolley track 102 formed on the lower inner side to form the trajectory of the trolley 50, the hoist track 104 formed on the inner side to form the trajectory of the hoist 40, and is formed on the upper surface A pair of elongated left and right booms 100 including a spreader track 106 forming a trajectory of the spreader 20; A pair of elongated left and right first steel wires 60 connected to a power source to form a closed loop for moving the gantry crane, and disposed under the hoist to rotate in the boom 100; A pair of elongated left and right second steel wires 70 connected to a power source to form a closed loop for moving the gantry crane and disposed above the hoist to rotate in the boom 100; Two pairs of front and rear are formed in the upper portion of the trolley, the steel wire holder 52 holding the first steel wire 60 or the second steel wire 60 and the holder 52 connected to the steel wire 60 and the holder 52. Trolley (50) comprising an unlocker (56) for releasing the coupling) and a wheel (59) for rolling the trolley track (102) of the boom (100); A pair of wheels 22 formed at left and right sides of the lower side, the wheels rolling the spreader tracks 106; An inclined guide 42 for guiding the unlocker 56 of the trolley at the lower front end and the rear end, and a movable and detachable traction with the trolley 50 for pulling and discharging the trolley 50 downward; Hoist 40 in which sphere 44 is formed; And A box-type elevator 80 disposed between both ends of the first steel wire 60 and the second steel wire 70 disposed up and down, the height being higher than that of the trolley and the spreader assembly and the width being wider than the boom spacing. , When the steel wire holder 52 of the trolley 50 to which the spreader 20 is coupled to the lower portion enters the hoist 40 while moving in combination with the first steel wire 60, the wheel of the holder presser 56 ( 54 is pressed downward while passing through the guide 42 in the lower portion of the hoist 40 to release the combination of the steel wire holder 52 and the steel wire 60 to stop the movement of the trolley, the trolley 50 is hoist 40 When moving away from the bottom of the steel wire holder 52 and the steel wire 60 is coupled to move the trolley 50, the movement between the first steel wire 60 and the second steel wire 70 is the elevator 80 When the trolley 50 and the spreader 20 are coupled to the second steel wire 70 of the upper part and move, the wheel 22 of the lower part of the spreader 20 rolls the trajectory of the boom 100. Moving system of the circulating gantry crane operating portion, characterized in that moving. The method of claim 1, wherein the holder 52 is characterized in that consisting of a pair of holding parts 52-1 which vertically fit the steel wire (60, 70) and a horizontal body (52-2) connected from the holding part. Movement system of the circulating gantry crane operating part. 3. The locker (56) according to claim 2, wherein the unlocker (56) is a presser (57) for pressing the body on the upper portion of the body (52-2) of the holder (52) and a wheel (58) mounted at the upper end of the presser (57). When the trolley 50 enters under the hoist 40, the wheel 58 is pushed down by the guide 42 of the hoist, and the presser 57 presses the holder body 52-2 so that Movement system of the circulating gantry crane operating part, characterized in that the coupling of the holder (52) and the steel wire (60) is released by opening the earth (52-1). According to claim 1, wherein the lower end of the elevator 80 is provided with a guide 82 which can be moved back and forth as a hook type, the guide 82 is engaged with the trolley 50 to enter and exit the elevator. A moving system of the circulating gantry crane operating part.