KR20000056397A - Gentry crane having improved capacity - Google Patents

Abstract

The present invention relates to a gantry crane with improved processing capacity; A boom horizontally installed at a predetermined height of the pylon; At least one trolley mounted to the boom to be movable; A spreader detachable from the bottom of the trolley, coupled to the trolley when the trolley moves, and separated from the trolley to descend the container; A hook which can be coupled to and detached from the spreader by vertically penetrating the trolley to move up and down, and coupled to the spreader to lower the container; It is installed to be movable to the boom is characterized in that it comprises a hoist for lifting the hook. This gantry crane has a very fast unloading speed and a high processing efficiency because the trolley continuously circulates along the boom and unloads the container. In addition, when the trolley moves, the spreader is coupled to the bottom of the trolley, so that the trolley does not move with the spreader hanging down, and there is no shaking of the spreader due to the change in the speed of the trolley. There is no shaking even when moving to a state, there is an advantage that the unloading can be performed quickly and stably by increasing the moving speed of the trolley.

Description

Gentry crane having improved capacity

The present invention mainly relates to a circulating gantry crane which is a device for unloading a container, and more particularly, to a gantry crane having improved handling capacity by installing a plurality of trolleys.

Container shipments began for the first time by Sea-Land Service in 1957, and in 1958 when Matson Navigation began shipping containers on the Atlantic. Today, more than 80% of cargo transportation, excluding liquid and powder cargo, is accounted for, and this proportion is expected to increase. With such a rapid increase in the use of containers, the processing capacity of container cranes has also improved in capacity compared to the early days due to the increase in capacity of driving motors, the modification of trolleys and spreaders, and the introduction of automatic control systems.

In the conventional gantry crane, as shown in FIG. 1, the boom 14 is horizontally coupled to the main column pillar 12, and the boom 14 is provided with a machine room 16 and a spreader 24. The trolley 22 is equipped to reciprocate. In the conventional gantry crane having the structure as described above, the spreader 24 installed in the trolley 22 is lowered to pick up the container 18, while the trolley 22 moves the boom 14, for example, at a pier. The container 18 is operated to unload the container 18 from the vessel to the pier.

However, in the conventional gantry crane as described above, as the trolley 22 moves along the boom 14, the steel wire 20 is laid down and the spreader 24 is lowered, so that the spreader 24 of the container 18 is moved. The operation time is delayed because it takes longer to be accurately positioned at the upper part, and the motion of the spreader 24 moves up and down as the trolley 22 moves while the container is picked up. It is inconvenient to place the container in the correct place at the time of lamination, and thus there is a problem in that the unloading speed and the unloading efficiency are very low.

The present invention was created to solve the above problems, the container unloading during the unloading of the container unloading is quick and accurate, especially by installing a plurality of trolleys and spreaders to operate the gantry crane with improved processing capacity The purpose is to provide.

1 is a view showing a conventional gantry crane.

2 is a view schematically showing the configuration of the gantry crane with improved processing capacity according to an embodiment of the present invention.

3A and 3B are partial views illustrating the operation of an improved gantry crane according to an embodiment of the present invention.

4 is a plan view of FIG.

<Explanation of symbols for main parts of drawing>

10: Gantry crane 12: Pylon pillar

14,100,120: boom 16: machine room

18: container 20: steel wire

22,102: Trolley 24,104: Spreader

106: land side hoist 108: offshore side hoist

110: hoist motor 112: hoist wheel

114: steel wire 116: hook

120: container hook 122: connector

123: ground 124,125: hook means

126: Trolley hole 128: Hook hole

130: Ship 132: pulley

140: wheels

In order to achieve the above object, the present invention provides a movable pillar column; A boom horizontally installed at a predetermined height of the pylon; At least one trolley mounted to the boom to be movable; A spreader detachable from the bottom of the trolley, coupled to the trolley when the trolley moves, and separated from the trolley to descend the container; A hook which can be coupled to and detached from the spreader by vertically penetrating the trolley to move up and down, and coupled to the spreader to lower the container; It is installed to be movable to the boom is characterized in that it comprises a hoist for lifting the hook.

Further, at least four hooking means are provided on the bottom of the trolley and the hook, respectively, and a trolley hole and a hook hole corresponding to the positions of the hooking means are coupled to the hooking means of the trolley and the hooking means of the hook on the upper surface of the spreader. It is formed is possible to be detachable, the hoist is characterized in that the coupling between the spreader and the trolley when the hook and the spreader is coupled, characterized in that the coupling between the spreader and the trolley release the hook and the spreader.

In addition, the hook is connected to the hoist motor and the steel wire in the hoist, the length of the steel wire is adjusted according to the operation of the hoist, and the lifting movement of the hook is made, the hoist installed on the boom is located on the land side hoist and the marine side located on the land side It is composed of a located offshore side hoist, the trolley is configured separately from the hoist, characterized in that the trolley and the hoist can move independently from each other in the boom.

In addition, at least four hooking means are formed on the bottom of the trolley and the hook, respectively, and a trolley hole and a hook hole corresponding to the positions of the hooking means are coupled to the hooking means of the trolley and the hooking means of the hook. And the hoist releases the coupling of the spreader and the trolley when the hook and the spreader are coupled, and releases the coupling of the hook and the spreader when the spreader and trolley are coupled, and the hook is connected by the hoist motor and the steel wire in the hoist. As the length of the steel wire is adjusted according to the operation of the hoist, the lifting movement is made, and the hoist installed on the boom is composed of the land side hoist located on the land side and the sea side hoist located on the sea side. In addition, the hoist includes a hoist motor and a hoist wheel for guiding the steel wire connected to the hoist motor to the hook side, and enables linear movement with respect to the boom, and the boom has one closed loop to allow the trolley to circulate along the boom. Configured to achieve.

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

2 is a view showing the configuration of the gantry crane with improved processing capacity according to an embodiment of the present invention.

As shown, the gantry crane 10 according to the present embodiment is a pylon column 12 movable with respect to the ground 123, a boom (boom, 100) horizontally installed on the pylon pillar 12, and It moves along the boom 100 and transports the container 18 to the unloading place, and the land side hoist 106 and the marine side hoist installed in the upper portion of the boom 100 to elevate the hook 116 Side hoist 108.

The size of each of the elements is dependent on the docking capacity and loading level of the port, it is of course possible to add a reinforcement member as necessary to support the boom 100 stably. In addition, a space is provided below the main column pillar 12 so that the container 18 to be unloaded arrives in advance and waits.

The boom 100 located at a predetermined height of the main column pillar 12 is positioned horizontally, as shown in FIG. 4 in this embodiment, a plurality of trolleys 102 by forming a closed loop (closed loop) Is circulated along the boom 100 is configured to perform the unloading. In addition, the structure of the boom may have a variety of shapes as long as it forms a closed loop, and the vertical circulation gantry crane and the selection (patent registration number) according to the selection (patent registration number 143699) known by the applicant Of course, it is possible to use a boom applied to the horizontal circulation gantry crane according to (134235).

Two hoists 106 and 108 are installed on the upper side of the boom 100. The hoists 106 and 108 consist of a land side hoist 106 located on the land side and a sea side hoist 108 located on the sea side. The land side hoist 106 and the sea side hoist 108 is capable of movement in the direction of arrow a with respect to the boom 100, respectively, when position adjustment is necessary, and the hoist motor 110 and the hoist wheel 112 therein. In addition, it includes various electrical facilities such as substation equipment (not shown) and various control means (not shown). In particular, the marine side hoist 108 is preferably such that the range of the reciprocating motion relative to the land side hoist 106 so that the container 18 can be lowered in place in a wide unloading place. Of course, the hoists 106 and 108 are provided with motors (not shown) for reciprocating the hoists 106 and 108 themselves.

In the hoists 106 and 108 configured as described above, devices other than the hoist wheels 112 may be constructed by forming a separate machine room (not shown) independent of the hoists 106 and 108. In this case, only the hoist wheel 112 is installed inside each hoist 106 and 108, so that the hoist 106 and 108 can be moved quickly and lightly.

The hoist wheel 112 installed in the hoists 106 and 108 is connected to the hook 116 by the steel wire 114. The steel wire 114 is hoisted by the hoist motor 110, the hoist wheel 112 is wound up to lift the hook 116, and has a sufficient length to bring the container 18 to the bottom of the vessel (130 in Fig. 3b) Can be lowered. In addition, when the hoist motor 110 is driven to raise the hook 116 as much as possible, the hook 116 is raised to the bottom of the hoists 106 and 108 to be positioned. Thus, even if the trolley 102 circulates the boom 100 and passes through the lower portions of the hoists 106 and 108, the trolley 102 may pass through the lower portion of the hook 116 without hitting the hook 116.

The hook 116 is an element that supports the spreader 104 to the upper side in combination with the spreader 104 to be described later, and the hook is inserted into the hook hole (128 in FIG. 3A) formed on the upper surface of the spreader 104. The means (125 of FIG. 3A) is formed, and the pulley 132 by which the steel wire 114 is wound is provided in the upper part. Therefore, the hook 116 can be lifted and lifted by the hoist motor 110 hanging on the steel wire 114 in a state coupled with the spreader 104.

On the other hand, the plurality of trolleys (102) moving along the boom 100, the wheel 140 and a motor (not shown) for driving the wheel 140 therein, the circular movement along the boom 100 do. The drive of the trolley 102 is remotely controlled in a separate cab (not shown).

A hook means 124 is formed at the bottom of the trolley 102 to engage the trolley hole (126 in FIG. 3A) formed on the upper surface of the spreader 104 to move the spreader 104 in a suspended state. Therefore, a hook hole 128 that engages with the hook 116 and a trolley hole 126 that engages with the trolley 102 are formed on the upper surface of the spreader 104. In addition, as will be described later, the trolley 102 stops once at the bottom of the land side hoist 106 and once at the bottom of the marine side hoist 108 to unload the container 18.

The combination of the trolley 102 and the spreader 104 and the hook 116 and the spreader 104 are not made at the same time, and are configured to be selectively made by various known control means. Selective coupling means that when the spreader 104 and the hook 116 are newly engaged, the coupling between the trolley 102 and the spreader 104 that is being coupled is released, and the spreader 104 is coupled to the trolley 102. In other words, the coupling means that the coupling of the hook 104 and the spreader 104 which are engaged is released. Such selective combination may be variously implemented by various known kinematic devices.

In addition, the coupling mechanism of the spreader and the trolley and the coupling mechanism of the spreader and the hook are not only applied to the circulating gantry crane of the present invention, but also various kinds of transfer cranes that are installed and used in a yard or other logistics base. Of course, it can be applied to the crane.

3A and 3B are schematic views for explaining an operation for unloading containers of a gantry crane according to an embodiment of the present invention, and FIG. 3A is a trolley 102 arriving at the bottom of the land side hoist 106. ) And the spreader 104, and FIG. 3B is a view showing the operation of the trolley and the spreader arriving at the bottom of the marine side hoist 108. In addition, for the sake of convenience, although several hoists 106 and 108 are shown in the drawings, the land side hoist 106 and the sea side hoist 108 are each provided as described above.

The same reference numerals as the above reference numerals denote the same members having the same function.

As shown, the trolley 102 and the spreader 104 coupled to the bottom of the trolley 102, which are remotely operated from separate cabs (not shown) and move along the boom 100 in the direction of arrow b, It arrives at the lower part of the side hoist 106, and pauses. As described above, since the hook means 124 formed on the bottom surface of the trolley 102 is inserted into the trolley hole 126 formed on the upper surface of the spreader 104, the movement speed of the trolley 102 changes. The spreader 104 is positioned stably without shaking at the bottom of the trolley 102.

The land side hoist 106 is positioned in the vertical upper portion of the container 18 in advance, and the hook 116 is pulled to the bottom of the land side hoist 106 to maintain the ascending position. As a method of positioning the hoist 106 in place, a separate cockpit (not shown) may be provided in each hoist 106, 108 to allow an operator to adjust the position of the hoist 106, 108. Operation of the 106 and 108 may be performed through remote control as in the trolley 102.

The preferred standby position of the land side hoist 106 is vertically above the container 18, and the preferred standby position of the marine side hoist 108 is vertically above the container loading position of the vessel (130 in FIG. 3B). Therefore, the position of the land side hoist 106 should be pre-adjusted so as to correspond to the position of the container located on the lower part of the boom loaded on the container transport truck, and the marine side hoist 108 should be positioned in advance above the unloading position of the container desirable.

As shown in FIG. 3A, when the trolley 102 arrives at the lower side of the land side hoist 106 waiting at a certain place, the land side hoist 106 is operated and the hook 116 is pulled as far as it can be. Begins to descend. The hook 116 is lowered, penetrates vertically through the trolley 102 on which the wheels 140 are supported by the boom 100 and reaches the spreader 104 to form an engagement. This coupling is performed by inserting the hook means 125 formed on the bottom surface of the hook 116 as described above into the hook hole 128 formed on the upper surface of the spreader 104. At the same time as the above coupling, the hook means 124 of the trolley 102 is detached from the trolley hole 126 formed on the upper surface of the spreader 104 so that the coupling between the trolley 102 and the spreader 104 is released. The bearing force for hanging up the spreader 104 is switched from the trolley 102 to the hook 116, where the spreader 104 continues to maintain the same height. As described above, the conversion of the bearing capacity can be implemented by various known kinematic methods. For example, an arbitrary signal transmission line (not shown) is provided between the trolley hole 126 and the hook hole 128, and the hooking means 124 is inserted into the trolley hole 126 to perform locking. At the moment, the signal is transmitted to the hook hole 128, and the hook means 125 inserted into the hook hole 128 is unlocked, and on the contrary, the hook means 125 is hooked to the hook hole 128. When the locking is performed, the hook means 124 inserted into the trolley hole 126 may be separated. The hook means 124 and 125 also include various known latches.

As described above, when the hook 116 and the spreader 104 are engaged by the lowering of the hook 116, the coupling between the trolley 102 and the spreader 104 is released and the hoist motor (110 in FIG. 2) and the hoist are simultaneously released. As the wheel 112 continues to operate, the hook 116 lowers the spreader 104 toward the container 18, which is located under the hook. Pulley 132 is installed on the upper portion of the hook 116 is supported by the steel wire 114, the steel wire 114 is released by the hoist motor 110 is driven to descend.

On the other hand, a container hook 120 is formed on the bottom of the spreader 104, and a known coupling tool 122 is formed on the top surface of the container 18 to engage with the container hook 120.

When the spreader 104 descends to reach the container 18, the container hook 120 of the spreader 104 is inserted into the coupling hole 122 formed on the upper surface of the container 18 to perform locking. When the hook 116 is raised in this state, the spreader 104 is pulled up by the hook 116 while picking up the container 18. When the spreader 104 is close to the bottom of the trolley 102, the hooking means 124 of the bottom of the trolley 102 is inserted into the trolley hole 126 of the spreader 104, and the spreader 104 is inserted into the trolley 102. Is fitted. At this moment, the hook 116 is detached from the spreader 104 and continues to rise and stand on the bottom of the land side hoist 106. Eventually, the spreader 104 and the container 18 are coupled to the lower portion of the trolley 102 that is supported by the boom 100 and moves, so that the container 18 moves in the direction of the arrow c by the movement of the trolley 102. It will be possible.

Subsequently, referring to FIG. 3B, the container 18 moving in the direction of the arrow c reaches the lower portion of the marine side hoist 108, which is pre-positioned at the unloading point, and stops. The marine side hoist 108 can be moved to the loading stop in advance by the driver in the cockpit (not shown) provided in the hoist 108, so that the container can be unloaded in place regardless of the area of the loading place. . The marine side hoist 108 can also be remotely controlled from a separate cab, similar to the land side hoist 106.

When the trolley 102 arrives at the bottom of the marine side hoist 108 and the spreader 104 and the container 18 are positioned, the hook 116 in the standby state is lowered by the operation of the hoist wheel 112. In combination with the spreader 104. As described with reference to FIG. 3A, when the hook 116 is engaged with the spreader 104, the coupling between the trolley 102 and the spreader 104 is released. When the hook 116 is continuously lowered in this state, the spreader 104 is released. The trolley 102 is spaced apart and the container 18 is lowered to a loading place such as the vessel 130, for example.

The container 18, which has reached the unloading place, is separated from the spreader 104 by a known method, and the spreader 104 rises in the vertical direction again to engage with the trolley 102. At the same time, the hook 116 is detached from the spreader 104 and raised to the marine side hoist 108 side to stand by. The trolley 102 with the hook 116 pulled out and the spreader 104 coupled to the trolley 102 pass through the marine side hoist 108 and move along the boom 100 in the direction of arrow d to the initial position. Go to. At this time, the marine side hoist 108 is moved to the unloading position to put down the next container that continues to be transported along the boom 100 to wait.

4 is a plan view of FIG. 2 showing an example of a boom structure of a gantre crane with improved processing capacity according to an embodiment of the present invention.

The same reference numerals as the above reference numerals denote the same members having the same function.

As shown in the figure, the boom applied to this embodiment forms a closed curve on a plane, and is configured to continuously circulate the trolley 102 along the closed curve. As shown, since the trolley 102 continuously circulates along the boom, the container is unloaded continuously and the processing capacity is very fast.

Although the present invention has been described in detail through specific embodiments, the present invention is not limited to the above embodiments, and various modifications may be made by those skilled in the art within the scope of the technical idea of the present invention.

The improved gantry crane of the present invention made as described above, the trolley continuously circulates along the boom and unloads the container, so the unloading speed is very fast and the processing efficiency is high. In addition, when the trolley moves, the spreader is coupled to the bottom of the trolley, so that the trolley does not move with the spreader hanging down, and there is no shaking of the spreader due to the change in the speed of the trolley. There is no shaking even when moving to the state, the trolley speed of movement has the effect that can be carried out quickly and stably.

Claims (4)

A movable pillar column 12; A boom 100 installed horizontally at a predetermined height of the main column pillar 12; At least one trolley (102) installed to be movable on the boom (100); A spreader 104 detachable from the bottom of the trolley 102, coupled with the trolley 102 when the trolley 102 moves, and separated from the trolley 102 to lower the container 18; A hook 116 which can be coupled to and separated from the spreader 104 by vertically penetrating the trolley 102, and is coupled with the spreader 104 to pick up a container; Gantry crane with improved processing capacity, characterized in that it comprises a hoist (106, 108) installed to be movable on the boom (100) for lifting and lowering the hook (116). According to claim 1, wherein the bottom of the trolley 102 and the hook 116 is provided with at least four hook means (124, 125), respectively, the upper surface of the spreader 104 of the hook means 124 and hook of the trolley The trolley hole 126 and the hook hole 128 corresponding to the positions of the respective hook means 124 and 125 are formed so as to engage with the hook means 125, so that the hoist 106 and 108 may be detachably attached to the hook 116. And the disengagement of the spreader 104 and the trolley 102 when engaging the spreader 104 and the disengagement of the hook 116 and the spreader 104 when the spreader 104 and the trolley 102 are engaged. Characterized by improved gantry cranes. According to claim 2, The hook 116 is connected to the hoist motor 110 and the steel wire 114 in the hoist (106, 108), the length of the steel wire 114 is adjusted by the operation of the hoist (106, 108), so that the hook ( 116, the lifting movement is made, the hoist (106, 108) installed on the boom 100 is characterized in that the processing capacity is characterized by consisting of the land side hoist 106 located on the land side and the sea side hoist 108 located on the sea side Enhanced gantry cranes. The method of claim 1, wherein the trolley (102) is configured separately from the hoists (106, 108), the trolley (102) and the hoist (106, 108) can be moved independently from each other in the boom 100 is improved processing capacity Gantry crane.