JPS6320651Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a bridge-type unloader for discharging bulk materials.

(Prior art and its problems) Generally, a bulldozer is used to scrape up loose materials left on the bottom of a ship during cargo handling operations using an unloader.
Conventionally, the grab bucket was replaced with a bulldozer hoist and an unloader was used, or a crane separate from the unloader was used.

However, the former method involves a lot of lost time due to the work of replacing the grab bucket and bulldozer.
The latter method had the disadvantage of requiring a separate crane, which was costly.

Therefore, as a measure to eliminate these problems, it has been considered to have a bull-hanging trolley carried along with the main trolley that suspends the grab bucket cart (see Japanese Patent Application Laid-open No. 58-207225), but this method is similar to the former method. However, when loading and unloading the bulldozer, cargo handling operations using grab buckets were not possible, resulting in a reduction in cargo handling efficiency.

(Purpose of the invention) The present invention was devised to solve the above-mentioned conventional problems, and it is possible to perform cargo handling work using a grab bucket by checking the loose material grasping state of the grab bucket, and to improve the loading and unloading work using a bulldozer. The purpose is to increase cargo handling efficiency by allowing operations to be carried out in parallel.

(Structure of the invention) The present invention provides a bridge-type unloader for discharging bulk materials, on the outer surface of one of the two girders provided with the first traversing rail for the main trolley.
A rail support frame is provided to extend, a second transverse rail for bull suspension is provided at the lower part of the unloader center side of one of the girders and near the tip of the rail support frame, and a bull suspension trolley is horizontally mounted on the second transverse rail. The bull-hanging trolley is movably suspended, and the bull-hanging trolley is provided with a driver's cab, a hoisting device for raising and lowering a wire supporting a bulldozer hoisting tool, and a traveling drive device for horizontally moving the bull-hanging trolley. do.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

In the figure, reference numeral 1 denotes a girder, which is composed of a main girder 3 fixedly supported by a main body frame 2, and a undulation girder 5 pivotally connected to one end of the main girder 3 and supported by a levitation device 4 such that it can be erected. ing.

6 is the first trolley for the main trolley laid on the girder 1.
A main trolley 7 is movably mounted on the rail 6 in a rope trolley manner. A grab bucket cart 8 is suspended from the main trolley 7 so that it can be raised and lowered via a wire 9 and can be opened and closed via a wire 10.

Reference numeral 11 denotes a second transverse rail supported by a rail support frame 12 extending from the side of one of the girders 1, and is a set of two rails, one of which is attached to one of the two girders 1. It is located at the lower part of the center side of the unloader, and the other one is located extending outside the unloader of the same girder 1. A bull hanging trolley 13 is movably suspended from the rail 11.

14 is a drive device mounted on the bull hanging trolley 13, and the output shaft of the device 14 has a sprocket 1.
5 is installed. A chain 18 is wound around this sprocket 15 and a sprocket 17 mounted coaxially with the wheel 16.

A hoisting device is mounted on the bull-hanging trolley 13, and the hoisting device is composed of a drive device 20 and a hoisting winch 21.

Reference numeral 22 denotes a hanging tool for hanging bulls, and has a structure in which hooks 24 are provided at both ends of a frame 23, and a sheave 25 is rotatably mounted in the middle. This hanging tool 22
is suspended by a wire 26 whose one end is attached to the bull suspension trolley 13 and whose other end is hooked to a sheave 25 and wound around the hoisting winch 21 so as to be able to rise and fall.

27 is a driver's cab provided on the sea side (the girder tip side) of the bull-hanging trolley 13.

In addition, 28 is a bulldozer suspended from the hanging tool 22 via the wire 29, and 30 is a ship that is alongside the quay 31 on which the present unloader is installed.

(Function) When carrying the bulldozer 28 into the ship's hold, the chain sprocket mechanism 1 is moved by the drive device 14.
5, 17, and 18 to advance the bull hanging trolley 13 to a position directly above the hatch of the ship 30, and then the hoisting winch 21 is rotationally driven by the drive device 20. Then, lower the bulldozer 28 to the bottom of the ship.

After the bulldozer 28 has scraped up loose materials remaining on the ship's bottom, when the remaining cargo is to be unloaded, the bull-hanging trolley 13 lowers the bulldozer 28 and stops directly above the hatch of the ship 30. Since the operator's cab 27 is provided in the hanging trolley 13, the operator can see the loose object grasping state of the grab bucket 8. Therefore, the cargo handling operation using the grab bucket cart 8 can be carried out as before.

When the bulldozer 28 is to be carried out from inside the ship, the procedure for carrying it in is reversed.

If the second traversing rail 11 is installed with respect to the first traversing rail 6 so that the grab bucket 8 and the bulldozer 28 do not interfere with each other, the grab bucket 8
Before the end of the cargo handling work by the bulldozer 2, the bulldozer 2 is
8 can be lifted, and then the grab bucket 8 and bulldozer 28 can be retreated to the land side. Furthermore, even during cargo handling operations using the grab bucket cart 8, the bulldozer 28 can be advanced toward the sea. Therefore, the loading and unloading operation of the bulldozer 28 can be performed separately from the cargo handling operation using the grab bucket cart 8.

Note that the bull hanging trolley 13 may be moved by a trolley type, cable type, chain type, etc.

(Effect of the invention) As described above, the present invention increases the distance between the center of the rails of the second traversing rail and the center of the first traversing rail, so that when the main trolley and the bull-hanging trolley pass each other, the grab bucket Because the structure allows the bulldozer and the bulldozer to not interfere with each other, and the loading and unloading work of the bulldozer can be performed separately from the cargo handling work using the grab bucket.
Compared to the conventional method in which a bull-hanging trolley is carried by a main trolley, cargo handling time can be shortened and cargo handling efficiency can be increased. In addition, compared to the conventional bridge-type unloader with a mobile operator's cab, a bull-hanging trolley equipped with a hoisting device for raising and lowering the bull-hanging equipment is used, and a driver's cab is attached to this trolley. Therefore, the rise in equipment costs can be kept low. Also, since the second transverse rail has a structure of two rails and one set,
Since the running path width of the bull-hanging trolley can be widened, the stability of the bull-hanging trolley is improved.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram showing one embodiment of the present invention;
1, FIG. 3 is an enlarged view of the main part of FIG. 1, and FIG. 4 is a sectional view taken along the line .about. in FIG. 3. DESCRIPTION OF SYMBOLS 1... Girder, 2... Main body frame, 6... First transverse rail, 7... Main trolley, 8... Grab bucket, 9, 10... Wire, 11... Second transverse rail, 12... Rail support Frame, 13...
Bull hanging trolley, 14... Drive device, 19... Hoisting device, 22... Hanging tool, 26... Wire, 27...
...Driver's cabin, 28...Bulldozer, 29...Wire, 30...Ship.

Claims (1)

[Scope of utility model registration request] In a bridge type unloader for discharging bulk materials, a rail support frame is provided extending from the outer surface of one of the two girders provided with the first traversing rail for the main trolley, and the unloader of the one girder is A second transverse rail for suspending bulls is provided at the lower part of the center side and near the tip of the rail support frame, and a bull-suspending trolley is horizontally movably suspended from the second transverse rail, and the bull-suspending trolley is operated. A bridge-type unloader characterized in that it is provided with a chamber, a hoisting device for raising and lowering a wire supporting a bulldozer hoisting tool, and a traveling drive device for horizontally moving a bulldozer lifting trolley.