KR100306297B1 - Power transfer system of gantry crane - Google Patents

Abstract

The present invention relates to a power transmission system of a gantry crane having a structure in which a trolley, a hook, and a spreader are transported while the trolley is circulated including a container, scrap metal, and steel, and coupled to each other. A first clasp 22, a plurality of second clasps 24 for separating and coupling with the trolley 50, and a power connecting means 26 for receiving power from a power source. A spreader 20 having a 22 and a second clasp 24 connected to the power connecting means 26; A plurality of first fastening portions 32 engaged with the first clasp 22 of the spreader 20 and power transmission means 36 engaged with the power connecting means 26 and connected to a power source are formed. Hook 30; And a trolley (50) having a plurality of second fastening portions (56) engaged with the second clasp (22) of the spreader (20). The effect is smooth.

Description

Power transfer system of gantry crane

The present invention relates to a gantry crane for carrying a trolley circulating including a container, scrap metal, and steel, and more particularly, to a power transmission system in a structure in which a trolley, a hook, and a spreader are separated and combined.

At the unloading site of the container, a gantry crane is used with a spreader that can be combined with and detached from the container. The combination of the container and the spreader is carried out by several methods, among which, for example, Japanese Patent Application Laid-open No. Hei 10-508566 (name of invention: shock absorber assembly for spreader) or Korea Patent Publication No. 1998- As disclosed in No. 41984 and the like, a slit-shaped groove is formed in the upper four corners of the container, and the arrow-shaped latch having the head protruding in the left and right directions on the spreader can be rotated at positions corresponding to the grooves of the container, respectively. After the clasp is inserted into the groove of the container, the clasp is rotated 90 degrees so that the protruding portion of the clasp is caught by the container so that the container and the spreader are combined. As disclosed in Publication No. 1998-41984, the same configuration as the latch of the spreader It is also well known for a structure in which a metal is formed in a hook and a groove having the same configuration as that of a container is formed in the spreader so that the spreader can be detached from the hook when the spreader is replaced or serviced. The unloading gantry crane is designed to move the boom path connected to the main tower with the hoist, the hook, the trolley and the spreader coupled or connected with the steel wire. Therefore, since the trolley moves only between the container to be towed and the unloading position, the trolley moves from the land side of the crane to be powered by a curtain line, but it is operated by the horizontal circular gantry crane of Korean Patent No. 134235 and Korean Patent No. 143699 If the trolley is separated and circulated through the track, as in the case of vertical circulation gantry cranes in arcs, the trolley must be operated without power, since power cannot be supplied through the wires connected from the rear of the boom. However, the hoist corresponding to the conventional trolley of the components of the patent has a short moving distance, a slow moving speed, and only need to reciprocate a narrow section several times, so that power is supplied by connecting a power supply track and the like. There is no big difficulty.

In addition, in the existing crane, the spreader and the hook were separated only when the spreader was put on the ground and disassembled from the hook to replace or maintain the spreader. However, in the above-mentioned circulating crane, the disassembly should be freed by remote control from the boom. The spreader and hook or disassembly and assembly of the spreader and trolley must be modified. In addition, the spreader and the trolley need to be operated to perform proper functions even after being removed or separated. Since the upper and lower ends of the boom should be freely circulated after being combined, it is difficult to install a device for power supply and control in the spreader and the trolley. .

In other words, the minimum operation required for the spreader is the separation of the fasteners, the operation of the flipper, the expansion of the spreader, the separation of the safety device, and the like. In a revolving crane, this spreader is operated only when it is powered. In addition, trolleys need to move the boom along the track in the absence of external power, and the ability to start and stop from time to time if necessary. Therefore, in the above-mentioned circular crane, a configuration in which the trolley and the spreader are to be supplied with power in a state of being engaged with the hook is essential.

The present invention is designed to improve such a conventional problem, in order to improve the unloading speed and efficiency of the container unloading, the movement and transportation of the crane is made only by the trolley and the spreader is not connected to the power source and towing and unloading the container When the spreader is engaged with the hook, the spreader is powered by the hook to operate and the trolley is designed to start and stop by interacting with the hoist under the hoist. Its main purpose is to make it possible to circulate.

1 is a schematic diagram of a gantry crane to which the present invention is applied;

2 is an explanatory view of a container towing operation of the gantry crane of the present invention;

3 is an explanatory view of a container unloading operation of the gantry crane of the present invention;

4 is a front view showing the configuration of the gantry crane according to the present invention;

5 is a perspective view illustrating a coupling relationship between a hook and a spreader;

6 is a perspective view illustrating a coupling relationship between a trolley and a spreader;

<Explanation of symbols for the main parts of the drawings>

20 .. Spreader 30 .. Hook

40 .. Hoist 50 .. Trolley

22,24 .. Latch 26 .. Power connection means

32, 56. Fasteners 36. Power transmission means

Power transmission system of the 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:

A plurality of first latches 22 for separating and coupling with the hook 30, A plurality of second latches 24 for separating and coupling with the trolley 50, and a power connecting means for receiving power from a power source ( A spreader 20 in which 26 is formed;

A plurality of first fastening portions 32 engaged with the first clasp 22 of the spreader 20 and power transmission means 36 engaged with the power connecting means 26 and connected to a power source are formed. Hook 30; And

And a trolley (50) formed with a plurality of second fastening portions (56) engaged with the second clasp (22) of the spreader (20).

When the power transmission means 36 and the power connection means 26 is connected to the power is transmitted to the spreader is characterized in that the stretching operation of the spreader and the traction operation of the container 10 is performed.

In the power transmission system of the gantry crane according to the present invention, the first clasp 22, the second clasp 24 and the power connecting means 26 formed on the spreader 20 are on the spreader 20. Protrudingly formed, the first fastening portion 32 and the power transmission means 36 formed in the hook 30 is concave, the second fastening portion 56 formed in the trolley 50 is concave Is preferably formed.

In addition, in the power transmission system of the gantry crane according to the present invention, the container guide means 28 of the form spread toward the lower end to guide the container when combined with the spreader 20 and the container 10, the spreader 20 It is formed to be connected to the power connecting means 26 at the bottom four corners of the, the plurality of guide means 28 is preferably rotated upward after the coupling with the container 10 is completed.

In addition, in the power transmission system of the present invention, it is preferable that hook guide means 58 having a shape spread toward the lower end is formed to guide the movement of the hook 30 before and after the lower end of the trolley 50.

In addition, in the power transmission system according to the present invention, an elongated first slit 25 and a second slit 27 are formed side by side on the upper left and right surfaces of the spreader 20, and the hook 30 Thin plate-shaped first fastening plates 35 are inserted into the first slits 25 and fastened by pins, respectively, and the left and right lower ends of the trolley 50 are connected to the second slits 27. It is preferable that the thin plate-shaped second fastening plates 57 inserted and fastened by pins are respectively formed.

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 while the plurality of trolleys 50 form a circulation path of the closed loop along the boom 100, and the two hoists 40 are towing and unloading positions of the container. It is located at. The closed loop through which the trolley circulates and moves can be applied either horizontally or vertically.

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 are movable in the direction of arrow a when 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 the spreader is combined with the trolley 50 to move to the required position by the trolley to unload the container. The plurality of trolleys 50 moving along the boom 100 are combined with the moving steel wire 60 instead of a separate power and move along the turning path (see FIG. 6).

Spreader 20 is repeatedly coupled and separated with the trolley 50 and the hook 30, respectively, for unloading and transporting the container 10. First, see FIG. 2 and FIG. It will be described with reference to, and then the specific configuration of each of the components and the components for the coupling and separation will be described.

2 and 3 is a schematic view for explaining the unloading and transporting operation of the container while the components of the gantry crane according to the present invention repeat the separation, Figure 2 is entered into the bottom of the hoist 40 is located on the land side And an operation of the trolley and the spreader to advance, and FIG. 3 is a view illustrating the operation of the trolley and the spreader to enter the lower portion 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 under 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. Accordingly, the empty spreader 20 having the container lowered may be coupled to the trolley 50 and moved to the position where the container is coupled with the container again along the trajectory, thereby repeating the container towing operation.

As described above, the gantry crane according to the present invention is configured to move the trajectory at a high speed while repeatedly combining and detaching the trolley, the spreader and the hook from each other. Therefore, the gantry crane of the present invention must be provided with a power interruption system according to the separate coupling between the trolley, the spreader, and the hook. In addition, since such separation is performed in the air, in order to improve safety, it is preferable that both the coupling of the spreader and the hook or the coupling of the spreader and the trolley have a double coupling device, but in this embodiment, only one coupling device is provided. Listen and explain.

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

As shown, the hoist 40 is mounted to the upper portion of the boom 100 to be movable, the hook 30 is mounted to the hoist 40 to be liftable, and is movable to the bottom of the boom 100. The trolley 50 is mounted, the spreader 20 is disposed under the hook 30, and the container 10 is coupled to the lower portion of the spreader 20.

5 is an exploded perspective view of the hook 30, the spreader 20 and the container 10.

As shown, the upper four corners of the container 10 is formed with a slit-shaped groove 12, the lower portion of the spreader 20 is provided with a latch (not shown) of the same configuration as the conventional configuration described above, The coupling and separation of the spreader and the container are performed in the same manner as in the related art by coupling and separating the latch and the groove 12 of the container.

On the upper surface of the main body of the spreader 20, four first clasps 22 for coupling to the hook 30, four second clasps 24 for coupling with the trolley 50, and a power source of the hook 30 are provided. A plurality of power connection means 26 are formed to protrude. On the outside of each of the first clasps 22, as described below, a fastening guide plate 23 for guiding the clasps and the fasteners to be properly engaged when the hooks 30 are engaged is mounted. Four first clasps 22 are formed at each of the four corners of the main body of the spreader 20, and four second clasps 24 are preferably formed at the outer side of the first clasp 22. This is because the hook 30 is configured to move up and down through the trolley 50 (see Fig. 4). In the present embodiment, each of the first and second clasps is coupled to a groove formed in a conventional spreader as disclosed in the clasp or the Republic of Korea Patent Publication No. 1998-41984, which is coupled to the groove of the container under the spreader described above. Like the clasp provided in the hook, the engaging jaw is formed in the form of an arrow and protrudes from side to side and is rotatably installed. The first clasp and the second clasp are connected to the power connecting means 26, and the power connecting means 26 is connected to the power transmitting means 36 of the hook 30, which will be described later, and the power transmitting means ( 36 is connected to the power source of the hook 30, which will be described later, and the clasps 22 and 24 are inserted into the fastening part described later, and then receive power from the driving source of the hook through the power connection means and the power transmission means. It is fastened to the fastening part by rotating 90 degrees.

The left and right telescopic arms 21 of the spreader 20 are connected to the power connecting means 26 and stretched to fit the length of the container 10. The container guide plate 28 is attached to each edge of the arm 21 of the spreader 20. The guide plate 28 serves to guide the container 10 to properly engage the spreader 20 when the spreader 20 is engaged with the container 10. Therefore, the lower end portion of the guide plate 28 is preferably in an outward shape, and the existing one is used as it is. As described above, the spreader 20 is coupled to the trolley 50 to circulate along the movement path of the boom 100. Therefore, the guide plate 28 is rotated 90 to 270 ° in the direction of the arrow A after the coupling with the container is completed so as not to interfere with the movement during the movement of the spreader 20 is rotated to the top of the spreader 20. Guide plate 28 is connected to the power connection means 26 is configured to be rotated by the power.

As shown in FIG. 4, a first fastening part 32 is formed at a position corresponding to the first clasp 22 on the bottom of the hook 30, and the power connecting means 26 may be inserted therein. The power transmission means 36 is formed. The first fastening portion 32 is a hole corresponding to the first clasp 22 so that the head of the first clasp 22 can be inserted, and the power transmission means 36 has a hook 30. It is connected to a power source such as a motor mounted on the. Thus, the spreader 20 and the hook 30 approach each other so that the head of the first clasp 22 is inserted into the first fastening portion 32 and the power connecting means 26 is coupled to the power transmitting means 36. If so, power from the power source of the hook 30 is transmitted to the first clasp 22 through the power connecting means 26 and the power transmitting means 36 in the adjusting chamber, and the first clasp 22 is rotated 90 degrees. By rotating, the head of the first clasp 22 can be engaged with the first fastening portion 32 to engage the spreader 20 and the hook 30. On the other hand, when the hook 30 and the spreader 20 are separated, the first latch 22 engaged with the first fastening portion 32 of the hook 30 is rotated in the opposite manner to the above-described coupling process so as to rotate the first latch ( What is necessary is just to cancel engagement of the head of 22 and the 1st fastening part 32. FIG. The operation of the expansion arm 21, the second latch 24, and the guide plate 28 of the spreader 20 can also be controlled by the driving source, the power connection means 26, and the power transmission means 36 in the adjustment chamber. do.

In general, the weight of the container and the spreader is very heavy, such as several tens of tonnes, causing large accidents when falling. Therefore, a safety device is essential when the spreader is separated and the container is towed, and a separate safety device other than the fastener described above is required. Accordingly, a thin plate-shaped first fastening plate 35 is formed along the longitudinal side of the lower left and right sides of the hook 30, and the fastening plate 35 is inserted into the left and right sides of the spreader 20 when the hook and the spreader are coupled to each other. The first slit 25 is formed. The fastening plate 35 is preferably in the form of a centered pants so as not to interfere with the expansion and contraction mechanism of the spreader, and the holes 34 for inserting pins (not shown) are inserted into the slits 25 so as not to fall out. It is preferable to be formed one by one. As such, the engagement of the hook and the spreader is more reliably ensured by the double coupling of the fastening plate and the fastener.

6 is an exploded perspective view illustrating a coupling relationship between the trolley 50 and the spreader 20.

As shown, a second fastening portion 54 corresponding to the second clasp 24 is formed at the lower end of the lower protruding leg 51 of the trolley 50. The shape of the second fastening portion 54 is the same as that of the first fastening portion. The second clasp 24 is also connected to the power connecting means 26. Therefore, the second clasp 24 may be controlled in a state in which the spreader 20 and the hook 30 are coupled to each other. That is, when the trolley 50 and the spreader 20 approach and the second clasp 24 is inserted into the second fastening portion 54 while the hook 30 is lifted with the spreader 20 engaged, the first clasp In the same manner as when the 22 and the first fastening portion 32 are engaged, the second clasp 24 through the power source, the power connecting means 26 and the power transmission means 36 of the hook 30 in the adjustment chamber. Rotate) to engage the fastening portion 54 to engage the trolley 50 and the spreader 20. On the other hand, when the trolley 50 and the spreader 20 are separated, the second clasp 24, which is engaged with the second fastening portion 54 of the trolley 50, is rotated in the opposite manner to the above-described coupling process so as to rotate the second clasp ( The engagement of the head of 24 and the second fastening portion 54 may be cancelled. In addition, like the hook 30, second fastening plates 57 are formed at the lower left and right sides of the trolley, respectively, and a second slit 27 into which the second fastening plates 57 are inserted is formed in the spreader 20. Similarly, the second fastening plate 57 is formed with a hole 53 into which a pin (not shown) can be inserted. Therefore, when the spreader and the trolley are coupled, the double coupling is made by the second fastening plate in addition to the fastener described above. On the other hand, the first fastener and the second fastener is separated and fastened by the same pin, any one of which is preferably configured to be coupled to the spreader for safety. After the spreader 20 is coupled to the trolley 50 as described above, the hook 30 is separated from the spreader 20, and only the trolley 50 and the spreader 20 travel along the driving path. .

By the above-described configuration, the trolley 50, the hook 30, and the spreader 20 are repeatedly coupled to each other. That is, when the trolley 50 and the spreader 20 are coupled to the container traction position, the hook 30 is lowered to engage with the spreader 20. After the hook 30 and the spreader 20 are coupled, power is transmitted to the second latch 24 of the spreader 20 to rotate to separate the spreader 20 from the trolley 50. Thereafter, the hook 30 is lowered together with the spreader 20 to the container 10 position. When the spreader 20 is coupled to the container 10, the container guide plate 28 is rotated and folded. When the hook 30 is raised to the position of the trolley 50 while towing the container, the second latch 24 is inserted into the second fastening portion 54 and the second fastening plate 57 as the spreader approaches the trolley. The spreader 20 is coupled to the trolley 50 by being inserted into the second slit 27. Thereafter, the first fastening plate 35 of the hook is separated from the first slit 25 of the spreader 20, the first latch and the first fastener are separated, and the hook 30 is separated from the spreader 20, Only the trolley 50, the spreader 20 and the container 10 move to the unloading position along the driving route. In the unloading position, the above-described operation is repeated to unload the container.

In addition, the gantry crane of the present invention is always exposed to the outdoor environment. Therefore, since the clasp, the fastening part, and the like described above are also exposed to the rain or the like, it is preferable to form the clasp with the male and the fastening part with the female so that the fastening part is frozen with ice or the like and is not blocked.

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, a trolley, a hook, and a spreader are separated and combined to smoothly transmit power, which should be interpreted as being included in the scope of the present invention.

According to the present invention, the spreader, the hook, the trolley can be smoothly transmitted from the hook to the spreader in the coupled state while repeating the separate coupling with each other, the operation can be adjusted. For this reason, the spreader is capable of picking up a container while being coupled with a hook, and when coupled with a trolley, the spreader can be moved without a separate power transmission, thereby enabling all necessary operations in the crane. In addition, the detachable coupling structure of the crane exposed to the outside can maintain the robustness with little influence of the climate.

Claims (5)

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: A plurality of first latches 22 for separating and coupling with the hook 30, A plurality of second latches 24 for separating and coupling with the trolley 50, and a power connecting means for receiving power from a power source ( A spreader (20) formed with a first latch (22) and a second latch (24) connected to the power connecting means (26); A plurality of first fastening portions 32 engaged with the first clasp 22 of the spreader 20 and power transmission means 36 engaged with the power connecting means 26 and connected to a power source are formed. Hook 30; And And a trolley (50) formed with a plurality of second fastening portions (56) engaged with the second clasp (22) of the spreader (20). When the power transmission means 36 and the power connection means 26 is connected to the power is transmitted to the spreader is a power transmission system of the gantry crane, characterized in that the stretching operation of the spreader and the traction operation of the container 10 is performed. . The method of claim 1, wherein the first latch 22, the second latch 24 and the power connecting means 26 formed on the spreader 20 protrudes on the spreader 20, the hook ( The gantry, characterized in that the first fastening portion 32 and the power transmission means 36 formed in the 30 is concave, the second fastening portion 56 formed in the trolley 50 is concave. Crane power transmission system. The container guide means 28 of claim 1, wherein the container guide means 28 is formed to be rotatable at the bottom four corners of the spreader 20 so as to guide the container when the spreader 20 and the container 10 are coupled to each other. The gantry crane power transmission system, characterized in that the guide means 28 is connected to the power connection means 26 and rotates upward after the coupling with the container 10 is completed. The power transmission of the gantry crane according to claim 1, wherein hook guide means (58) is formed in a lower direction to guide movement of the hook (30) before and after the lower end of the trolley (50). system. The first and second slits 25 and 27 are formed side by side on the upper left and right surfaces of the spreader 20, respectively, and the first and second lower slits 27 are formed at the lower left and right sides of the hook 30. Thin plate-shaped first fastening plates 35 are inserted into the slits 25 and fastened by pins, respectively, and the left and right lower ends of the trolley 50 are inserted into the second slits 27 and fastened by pins. Gantry crane power transmission system, characterized in that the thin plate-like second fastening plate 57 is formed respectively.