JPH06107396A - Hanging load guide device for bridge type crane - Google Patents

Abstract

PURPOSE:To improve a bridge type crane for conducting cargo work between a ship situated alongside the pier and a quaywall while traveling along the quaywall in not only much time required for the positioning to a truck on the quaywall because a hanging load such as a steel plate coil is largely swung at the time of unloading the hanging load but also the danger of causing an accident. CONSTITUTION:A hanging load guide device for bridge type crane is provided with a nearly rectangular movable beam set 10 arranged in the middle level of a bridge type crane leg part and horizontally moving in sea-land direction; a rectangular opening 11 opened in the center part of the movable beam set 10 to vertically pass the hoisting accessory 6 of the crane; and hanging load cushioning positioning means 12, 12, 15 provided on two opposed sides and another one side of the rectangular opening 11 to elastically bring a guide member 20 into contact with a hanging load followed by positioning, and the movable beam set 10 is selectively stopped in a required position of a middle beam 9, and the hanging load is guided to the center of the opening 11 by the cushioning positioning means 12, 12, 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspended crane guide device for a bridge crane.

[0002]

2. Description of the Related Art In a coil yard or the like, when unloading a steel plate coil from a ship or loading it on a ship, a bridge type crane has conventionally been equipped with a coil lifter and moved along a quay by rails or magnetic guidance. The coil lifter of the bridge type crane is used to load or unload the coil carrier from the bogie to the ship or from the ship to the land coil.

[0003]

However, the coil lifter used for loading and unloading cargo of this kind is generally constructed so that the crane hoist can be kept horizontal by its own weight, and the crane hoisting rope has a small span. Since it is supported by hanging,
It is difficult to suppress the swinging of the suspension coil caused by traveling or traversing of the crane during the loading and unloading of the coil, and in particular, it takes time to stop the positioning of the coil for unloading the quay on the bogie, and is dangerous.

The present invention has been proposed in view of the above circumstances, and when the cargo is unloaded from a berth, the suspended load on the quay can be quickly and safely and easily aligned with the carrier truck and hung. An object is to provide a suspended load guide device for a bridge crane.

[0005]

To this end, the present invention provides a substantially rectangular movable beam set which is arranged at an intermediate level of a bridge type crane leg and horizontally moves in the land and sea direction, and a central portion of the movable beam set. The rectangular opening that is opened and allows the crane suspension to pass through in the vertical direction, and the positioning is performed by elastically abutting the guide plates attached to the two opposite sides and the other one side of the rectangular opening to the suspended load. And a suspension load buffer positioning means for performing, the movable beam set is stopped at a required position on the intermediate beam, and the buffer load positioning means guides the suspended load to the center of the opening. .

[0006]

According to this structure, the following actions are performed. The traveling beam set on the intermediate beam is stopped and held at the position by aligning the center of the opening with the center line of the carrier truck that moves on the quay floor by rails or other guide means. The suspended load contact cushioning means on the land side of the opening abuts the suspended load that moves transversely at the height of the guide plate, abuts against the swinging back impact of the suspended load, and shakes the suspended load when the crane stops traversing. It suppresses and stops rapidly at the center position of the opening. In this state, the suspended load contact cushioning means on the front and rear sides of the traveling direction of the crane send out the guide plates to elastically sandwich the suspended load from the front and back, and suppress the swinging of the suspended load in the traveling direction as the crane travels. After the crane travels to the position on the dolly and stops alignment, the hanging load contact cushioning means on the traverse side and traveling side are retracted, and the hoisting device is unwound and the hoisted load descends in a straight line without shaking. It is possible to accurately land on the floor and quickly release it from the hanger. As a result, the lateral movement of the suspended load suspended on the quay side and the swaying of the traveling can be safely and mechanically damped and restrained by the suspended load contact cushioning means, and the load can be landed quickly and easily.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to cargo handling of steel sheet coils will be described with reference to the drawings.

First, in FIG. 1, 1 is a bridge crane installed on a quay 2 and traversing along the quay line, 3 is a traveling leg of the crane, 4 is a horizontal main girder of the crane, and 5 is on a main girder 4. A traverse trolley, 6 is a coil cargo lifting device supported by a hoisting rope 7 of the trolley 5, and 8 is a load coil held by the lifting device 6.
9 is a pair of left and right parallel intermediate beams, both ends of which are supported at the intermediate level of the crane leg 3, and 10 are supported by the parallel intermediate beams 9 and 9 via rollers, and can be moved in the land and sea direction (front-back direction). Horizontal traveling beam assembly having a flat convex shape of
Is a rectangular opening formed in the central portion of the traveling beam assembly 10 for vertically passing the lifting device 6, 12 is a suspended load contact cushioning means provided on the traveling beam assembly 10 so as to be able to advance and retreat to the central portion of the land edge of the rectangular opening 11. Is a pallet of a constant track guidance type coil receiving dolly placed on the quay floor under the traveling legs 3, and 14 is a coil carrier which is berthed to the quay 2.

2 to 3, reference numeral 15 is a lateral load buffering means for a suspended load, which is disposed opposite to the central portion of the right and left ends of the rectangular opening 11, and 12 is a longitudinal load buffering means for a suspended load. This is such that the lower end is axially mounted on a slide table 18 which moves in the front-rear direction by driving a hydraulic cylinder 17 on a table 16 fixed on a movable beam assembly 10, and an elastic force is retained on the coil 8 side via a hydraulic cylinder 19. And a load-contact plate 20 facing each other is provided, and the left-right direction cushioning means 15 has a lower end pivotally mounted on the traveling beam set 10 and elastically abuts the coil 8 via the hydraulic cylinder 21. A plate 22 is provided and configured.

In such a structure, as shown in FIGS. 1 to 3, the traveling beam assembly 10 is located at a position on the center line of one of the pallets 13 and 13 'of a plurality of trucks under the crane 1, as required. After selectively moving, aligning and stopping and fixing, the hanger 6 traverses and transfers the coil 8 from the coil carrier 14 to a position on the movable beam assembly 10 as indicated by an arrow.
Both of the suspended load contact cushioning means 12, 15 on the upper side are guide plates 20, 2.
2, the coil 8 is elastically received and restrained by the hydraulic cylinders 17, 19 and 21 to prevent the coil from swinging, and the coil 11 is aligned and held in the center of the opening 11 so that the crane can be placed on the predetermined pallet 13 or 13 '. After stopping at the position of 1, the suspended load contact cushioning means 12 and 15 are moved to the retracted position, and the suspending tool 6 is lowered to lower the coil 8 through the rectangular opening 11 immediately below and place it on the pallet 13.

At this time, when engaging with the suspended coil, the buffer means 12 sends out the slide base 18 by extending the hydraulic cylinder 17 as shown in FIG. 4, and the hydraulic pressure is adjusted according to the size of the coil 8 to be unloaded. By adjusting the cylinder 19, the guide plate 2
0 is set at a position required for centering the coil 8 and the opening 11. The hanger 6 and the hanging coil 8 are conveyed from the left side of the figure to the position shown in the traverse of the trolley 5, and when the trolley 5 is stopped, the hanging coil 8 collides with the guide plate 20 due to the inertia of the traverse and guides. The plate 20 cushions the shock by the elasticity of the hydraulic cylinders 19 and 17, and rapidly suppresses the swinging of the suspended coil 8 in the front-rear direction and makes it stationary.

Here, the suspended load contact cushioning means 15 in the traveling direction of the crane (horizontal direction) retracts the contact plate 22 'by the contraction of the hydraulic cylinder 21 as shown by the broken line in FIG. And the guide plate is sent to the solid line position 22 while the suspended load coil 8 is stationary, and pressed against both side circumferential surfaces of the suspended load coil 8. In this state, the suspended load coil 8 swings in the traveling direction as the crane 1 travels. Stop. When the crane 1 stops at a predetermined position on the pallet 13, the suspended load contact cushioning means 12, 15 contract the hydraulic cylinders 17, 19 and 21, respectively, and as shown in FIGS. 5 and 7, the retracted position. To lift the suspending tool 6 vertically to lower the inside of the opening 11 to land the hanging load coil 8 on the pallet 13 and release it from the suspending tool 6, and the suspending tool 6 is hoisted, traversed and traveled. 14 and sends the suspended load contact cushioning means 12 to the position shown in FIG. 4 to prepare for the next receipt of the suspended load coil 8.

FIG. 8 shows a flow chart of the unloading operation of the above-mentioned apparatus.
Winding, traversing, running, damping position adjustment of the coil by the buffer means 12, 15 and steady rest, winding on the pallet, coil release, and return of the hanger to the ship can be performed automatically, semi-automatically or manually. It is possible. Such a device is also applicable to the unloading of solid objects other than coils. According to the above-mentioned device, the swinging of the suspended load caused by the traverse of the suspended load and traveling and transportation is automatically adjusted by the suspended load contact cushioning means in the front-rear direction and the left-right direction on the crane machine in correspondence with the landing position. It quickly stops and then comes to rest,
When the crane stops at the unloading position, the hoisting load can be vertically unloaded to unload the suspended load quickly and accurately on the pallet. Further, since the swing of the suspended load is mechanically stopped, the work is safe and easy.

[0014]

According to such an apparatus, the swing of the suspended load conveyed on the crane machine is mechanically and rapidly suppressed by the suspended load contact cushioning means, and the suspended load is stopped at a fixed position. When the crane is stopped, it will be possible to quickly and accurately unload the cargo on the truck or pallet on the ground through the opening. Further, by doing so, it is possible to easily and safely perform the positioning and loading on the cargo carrier or the pallet on the quay.

In short, according to the present invention, a substantially rectangular movable beam set which is disposed at an intermediate level of the bridge type crane leg and horizontally moves in the land and sea direction, and an opening is formed in the central part of the movable beam set.
A rectangular opening that allows the lifting equipment of the crane to pass vertically,
The movable beam assembly is equipped with hanging load buffer positioning means attached to two opposite sides of the rectangular opening and one other side of the rectangular opening to position the guide plates elastically abutting against the hanging load. Positioning the suspended load on the berth on the quay at the time of unloading from the berth by stopping at the required position on the beam and guiding the suspended load to the center of the opening by the buffer positioning means. INDUSTRIAL APPLICABILITY The present invention is extremely useful industrially because it provides a suspended-crane load guide device for performing quick and safe and easy alignment and hoisting.

[Brief description of drawings]

FIG. 1 is an overall schematic side view showing an embodiment in which the present invention is applied to a coil carrier.

FIG. 2 is a plan view taken along the line II-II of FIG.

FIG. 3 is an enlarged view of a main part of FIG.

FIG. 4 is a side view taken along the line IV-IV in FIG.

FIG. 5 is a side view of another operating state corresponding to FIG.

6 is a side view taken along the line VI-VI showing the guideline of the load in FIG.

FIG. 7 is a side view of another operating state corresponding to FIG.

FIG. 8 is an operation flow chart during unloading in FIG.

[Explanation of symbols]

 1 bridge type crane 2 quay 3 traveling leg 4 main girder 5 traverse trolley 6 coil suspension 7 hoisting rope 8 load coil 9 intermediate beam 10 movable beam assembly 11 rectangular opening 12 suspended contact means for pallet 13 pallet 14 coil carrier 15 Left-right buffering means for suspended load 19 Hydraulic cylinder 20 Guide plate 21 Hydraulic cylinder

Claims (1)

[Claims] 1. A substantially rectangular movable beam set which is arranged at an intermediate level of a bridge-type crane leg and horizontally moves in the land and sea direction.
A rectangular opening that is opened in the center of the movable beam assembly and allows the crane suspension to pass through in the up-down direction, and elastically with a guide plate attached to each of the two opposite sides of the rectangular opening and the other side. A suspended load buffering positioning means for positioning the movable beam set by stopping the movable beam set at a required position on the intermediate beam and guiding the suspended load to the center of the opening by the buffer positioning means. A suspended crane load guide device characterized by the above.