JP2864084B2 - Bulk unloading machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an unloading machine for a self-unloader ship for bulk ore such as limestone.

[0002]

2. Description of the Related Art As one of the conventional techniques, as shown in FIGS. 12 to 14, a boom frame 29 provided above an inboard unloading device is mounted on a wire rope hoisting type elevating device 30, and mounted on an upper deck 17 of a hull. Boom frame 2
9, a telescopic chute 44 is provided at the tip of the revolving boom frame 29, and revolving and raising are performed by an inboard horizontal pull-out belt conveyor 36, a dispensing machine 37, an inboard relay belt conveyor 38, and an inboard vertical belt conveyor 39. The load conveyed to the boom belt conveyor 40 is passed through the chute 44 to the receiving hopper 24 on the ground side.
There is a way to supply. In this case, the wire rope hoisting stand 35 is installed on the boom frame 29, and the upper part of the wire rope 31 is supported by the hanger 43 of the sheave 47 on the inboard unloading device upper stand 49. However, in this method, the ship is rocked by waves (particularly in the vertical direction).
Therefore, the telescopic chute 44 and the ground side hopper 24 may come into contact with each other, so that it is necessary to constantly monitor and change the elevation angle F1 of the boom frame 29 from time to time.

Next, as another technique, there is a method in which the tip of the boom frame 29 is exposed to the ground side hopper 24 during operation. In this case, as shown in FIG. 15 to FIG.
Does not cause the problem of contact between the boom frame 29 and the hopper 24 unlike the related art described above, but a device for lowering the boom frame 29 and a device for rotating the boom frame 29 are used. Since the boom frame 29 is not specially provided, a separate crane (not shown) is required when the boom frame 29 is moved to and removed from the ground side hopper 24.
The turning is also performed by another crane about the base of the boom frame 29. Also, the boom frame 29
Since about half of the weight of the hopper 24 is left to the ground-side hopper 24, the hopper 24 needs to be strong in strength.

[0004]

SUMMARY OF THE INVENTION The present invention is to improve the cargo handling work of a conventional bulk carrier, and comprises a turning device for a turning and raising boom belt conveyor and a wire rope hoisting raising device. A swing boom frame mount is installed on the upper deck of the hull, a boom frame swing device is installed on this, and a swing upper frame support of an elevating hoisting device is installed on this swing center line, and a swing and boom frame is installed. Is equipped with a belt conveyor and a winch mount for hoisting the wire rope for raising, and a gravity tension adjusting device for the wire rope suspended from this mount,
An object of the present invention is to provide a bulk unloading machine that can smoothly and safely supply a landside hopper installed at an arbitrary predetermined position regardless of the swing of a ship.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a swiveling and lifting boom which is installed on a bulk carrier and rotates a load of ore and the like carried on the ship by a belt conveyor in the ship. A bulk unloading machine supplied to a land-side hopper by a belt conveyor.
Elevating boom Equipped with a belt conveyor swivel device and a wire rope hoisting elevating device.In a boom frame elevating device consisting of a winch, sheave, wire rope, etc., one end of the wire rope is fixed to the winch drum, and the other end is boom. Fix it to the winch stand installed on the frame, wind a wire rope, drop the take-up weight integrated with the suspended sheave, and raise and lower the take-up weight along the guide suspended by the winch stand. By operating and adjusting the weight of the take-up weight, the tension of the wire rope is adjusted, and the end of the boom frame can be supported by the ground-side hopper by the elevating device.

[0006]

[Operation] By operating the turning device of the swiveling / elevating boom belt conveyor and the wire rope hoisting elevating device, leaving the end of the boom frame to the ground side hopper, setting the weight in the middle of the guide by the elevating winch. By
The tension of the wire rope is always kept at a constant level by the take-up weight. As a result, the wire rope does not come loose or the boom frame and the hopper separate from each other when the ship moves up and down. If there is no take-up weight, the tip of the boom frame will separate from the ground hopper when the ship swings up, and the wire rope will be loosened when swinging down. Further, by keeping the tension of the wire rope constant by the take-up weight, a part of the moment around the pivot pin for elevating the boom frame can be borne, and the ground contact load to the ground side hopper can be reduced. This allows the hopper to be lighter than the second prior art method.

[0007]

Embodiments of the present invention will be described with reference to the drawings. 1 to 11 show an embodiment of the present invention, and FIGS. 12 to 17 show a conventional example. FIG. 1 is a side view showing a part of the port side of the hull. In FIG. 1, the solid line position Y of the boom frame 29 is the horizontal position, and the two-dot chain line positions U, X, and Z are the vertical tilt position of the boom frame 29. The position of each ground-side receiving hopper 24 is shown. FIG. 2 is a plan view of FIG. 1 and shows a boom belt conveyor 40 on the bow side and an elevating device 3.
0, the upper side indicates the stern side, the lower side indicates the bow side, and the same unloading machine is installed on the stern side symmetrically with this figure. FIG. 3 shows a port cross section taken along the line AA in FIG. 1 and is a clamped state diagram when the boom belt conveyor 40 is at rest. Clamp mount 25 is upper deck 1
7. FIG. 4 is a sectional view taken along line BB of FIG. FIG. 5 is a partially enlarged view of FIG. 6 is a plan view of the elevating device, FIG. 7 is a front view of the take-up weight portion taken along the line CC in FIG. 1, and FIG. 8 shows the elevating positions of the boom belt conveyor 40 and the elevating device 30. 9 is a side view of the upper support device of the turning device, FIG.
FIG. 11 is a side view of a hanging portion of a take-up weight guide, FIG. 12 is a side view of one conventional example, FIG. 13 is a plan view of FIG. 12, and FIG. 1
2 is a partial cross-sectional view of FIG. 2, FIG. 15 is a front view of another conventional example taken along line D-D in FIG. 16, FIG. 16 is a side view of FIG.
16 is a partial plan view of FIG. In the drawing, reference numeral F1 denotes the direction of the elevation of the boom frame 29 (elevation angle), F
Reference numeral 2 denotes a turning direction (turning angle) of the boom frame 29. U is the raised position of the boom frame 29 and the position of other parts related thereto, X is the position of the raised middle position of the boom frame 29 and other related parts, and Y is the horizontal position of the boom frame 29 and The position of another related portion, Z, indicates the lowering position of the boom frame 29 and the position of another portion related thereto.

[0008] The bulk unloading machine of the present invention is installed on a bulk carrier, swivels the load of ore and the like carried onboard by the collective belt conveyor 11 in the ship, and lifts the boom belt conveyor 40 on the land side. Hopper 24
A lifting / lowering boom belt conveyor 40, a turning device 20 and a wire rope hoisting raising / lowering device 30, and a winch W, boom sheaves 6, 7, gantry sheaves 8, 9, and In the elevating device 30 of the boom frame 29 composed of the wire rope 31, one end of the wire rope 31 is connected to the winch drum 27.
, And the other end is fixed to the winch mount 5 installed on the boom frame 29, a wire rope 31 is wound therearound, and a take-up weight 28 integral with the sheep 21 suspended is provided.
Guide 1 suspended from the winch stand 5
The take-up weight 28 is moved up and down along 0 and the weight of the take-up weight 28 is adjusted to adjust the tension of the wire rope 31, and the tip of the boom frame 29 is supported by the ground-side hopper 24. The ground reaction force can be adjusted, and the tip of the boom frame 29 can be supported by the ground side hopper 24 by the elevating device 30.

The swivel unit 20 of the swivel / elevation boom belt conveyor 40 has the swivel base 16 mounted on a swivel boom frame mount 19 installed on the upper deck 17, and the swivel unit 20 is provided on the swivel base 16. By rotating the swivel base 16, the boom frame 29 is moved to the center line O-.
A device is installed so that it can turn around O. Swivel 16
A boom frame 29 is mounted on the boom frame pivot pin 22 so as to be able to be raised, and a winch mount 5, a winch W for raising, a mount sheave 8,
9, le, ヲ are installed. A guide 10 is suspended from the winch base 5, and the take-up weight 28 and the sheave 21 can be moved up and down along the guide 10 according to the elevation of the boom frame 29. Wheels 18 for leaving the boom frame 29 to the hopper 24 are provided at the tip of the boom frame 29.
Here, a shoe can be used instead of the wheel 18 at the end of the boom frame 29.

The wire rope hoisting type elevating device 30 comprises a winch mount 5 installed on a boom frame 29, a turning upper frame support fixed to an elevating device lower support base 14 and an elevating device upper support base (ship stand) 13. 26 is provided between the revolving caps 46 provided at the upper end so as to be rotatable about the revolving center line OO. The sheave hanger 43 of the boom sheave 6 is rotatably attached to the revolving cap 46 by the pivot 33, and the hanger 5 of the boom sheave 7 is
Numeral 8 is attached to a lower support frame 14 of the elevating device fixed to a boom frame 29 so as to be rotatable about a pivot 34.
The elevating device 30 can simultaneously turn in accordance with the turning of the boom frame 29. One end of the wire rope 31 is fixed to the winch drum 27, and the other end 32 of the wire rope 31 is wound around the boom sheave 6 and the boom sheave 7 several times, and then passes through the gantry sheaves 9, ル, ヲ, 8, and further, a take-up weight. The sheave 21 is fixed to the winch base 5 through the sheaves 21. As shown in FIG. 10, the arrangement of the sheaves is as follows: boom sheave 6 composed of intermediate sheaves, b, b, c, d, and e; boom sheave 7 composed of intermediate sheaves, b, c, and r; The wire rope 31 is wound around these sheaves, and one end of the wire rope 31 is fixed to the winch rack 5 and the other end is fixed to the winch drum 27. As shown in FIG. 11, the upper end of the guide 10 hung on the winch base 5 is supported by a pin 57 fixed to the winch base 5.
And can rotate freely in one direction. A sheave 21 suspended from a wire rope 31 in a guide 10 rotatably suspended on a winch base 5,
The take-up weight 28 can be moved up and down between its upper and lower positions as shown in FIGS. Normally, during the raising operation of the boom frame 29, a tension greater than the tension of the wire rope 31 by the take-up weight 28 is required.
Is in a state where the stopper 53 of the weight 28 has hit the gantry stopper 50 at the upper limit of the guide 10. When the wire rope 31 is wound up or down by the winch W, the boom frame 29 can perform an elevating operation around the boom frame elevating pivot pin 22. FIG. 8 shows the positional relationship between the boom belt conveyor 40 and the elevating device 30. That is, when the winch W is raised and lowered, the positions of the winch W, the sheave 7 and the driven wheel 3 of the belt conveyor 40 are changed to positions U, Y, and Z, respectively, and at the same time, the boom frame 29 (conveyor belt). 41), the winch mount 5 also changes their positions, but the guide 10 always hangs vertically, and changes its position from the position indicated by the solid line to the position indicated by the two-dot chain line.

In the drawing, reference numeral M denotes a three-phase induction motor for driving the belt conveyor 40, MB denotes an electromagnetic brake, MC denotes a Hansen speed reducer, 1 denotes a driving vehicle of the belt conveyor 40, 2, 3,.
4 is a driven vehicle of the belt conveyor 40, 12 is a chute, 1
5 is a collective belt conveyor house, 23 is a dropping tray, 41
Is an upper swiveling, elevating boom conveyor belt, 42 is a lower swiveling, elevating boom conveyor belt, 45 is a guide roller of the belt conveyor 40, 48 is a cover, 51 is a handrail fence,
52 is a winch mounting frame, 56 is a crane, G is a quay, H is a horizontal line of a hull, and L is a sea surface.

As a working procedure, first, the wheel 18 at the tip of the boom frame 29 is brought into contact with the ground side hopper 24 by turning and raising and lowering the boom frame 29. During the raising operation of the boom frame 29, the take-up weight 28
Since the stopper 53 of the weight 28 is in contact with the pedestal stopper 50 at the upper limit of the guide 10, the take-up weight 28 at the upper limit of the guide 10 is lowered to the intermediate position of the guide 10, and the rotation speed reduction motor is used. Turn off the brake (not shown). In this state, the cargo from inside the ship is received by the belt conveyor 40 supported by the boom frame 29 and supplied to the hopper 24. When the ship swings upward, the boom frame 29 slightly rotates downward around the boom frame elevating pivot pin 22, and the take-up weight 28 rises upward. When the ship swings downward, the boom frame 29 slightly rotates upward around the boom frame elevating pivot pin 22, and the take-up weight 28 falls downward. Limit switches 54 and 55 are provided at the upper and lower limits of the guide 10, and when the take-up weight 28 reaches the upper and lower limits, the boom frame 29 is raised or lowered by the elevating winch W to take up the weight 28. Is reset to the middle position of the guide 10. By adjusting the weight of the take-up weight 28, the tension of the wire rope 31 can be adjusted, and the ground reaction force when the tip of the boom frame 29 is supported by the ground-side hopper 24 can be adjusted. In this way, the boom frame 29 can smoothly follow the ground-side hopper 24 with respect to the swing of the ship.

Since the present invention has the above configuration, the bulk load in the ship is transferred onto the swiveling belt conveyor 40, and the belt conveyor 40 descends following the swing of the ship.
Unloading allows safe and efficient cargo handling.

[0014]

According to the present invention, the boom frame can be swiveled and the take-up weight makes it possible to change the elevation angle of the boom frame with a wire rope hoisting type elevating device capable of adjusting the tension of the wire rope. From
Even if the ship swings, the boom belt conveyor can follow the hopper on the ground without hindrance, and the hopper on the ground side can be made lighter and more effective.

[Brief description of the drawings]

FIG. 1 is a side view of an unloading machine on the bow port side of a carrier according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a cross-sectional view taken along the line AA of FIG. 1;

FIG. 4 is a cross-sectional view taken along line BB of FIG. 1;

FIG. 5 is a partially enlarged view of FIG. 1;

FIG. 6 is a plan view of the elevating device.

FIG. 7 is a front view of the take-up weight portion taken along the line CC in the figure.

FIG. 8 is an explanatory diagram of the elevating device.

FIG. 9 is a side view of the upper support device of the turning device.

FIG. 10 is a diagram for explaining winding of a wire rope.

FIG. 11 is a side view of a hanging portion of a take-up weight guide.

FIG. 12 is a side view of one conventional example.

FIG. 13 is a plan view of FIG.

FIG. 14 is a partial cross-sectional view of FIG.

FIG. 15 is a front view of another conventional example taken along the line DD in FIG. 16;

FIG. 16 is a side view of FIG.

FIG. 17 is a partial plan view of FIG. 16;

[Explanation of symbols]

1 Driven belt conveyor 2 Driven belt conveyor 3 Driven belt conveyor 4 Driven belt conveyor 5 Winch mount 6 Boom sheave (A, B, H, D, E) 7 Boom sheave (H, T, J, R) 8 Stand sheave (W) 9 Stand sheave (N) Le Stand sheave 架 Stand sheave 10 Guide for take-up weight 11 Inboard collective belt conveyor 12 Chute 13 Elevator upper support base (ship mount) 14 Elevator lower support base 15 Assembly Belt Conveyor House 16 Swivel 17 Upper Deck 18 Wheels 19 Swivel Boom Frame Attachment 20 Swivel Device 21 Take-Up Weight Sheave (f) 22 Boom Frame Elevating Axis Pin 23 Drop Receiving Plate 24 Land Receiving Hopper 25 Clamp Mounting stand 26 Revolving upper frame column 27 Winch drum 2 8 Take-up weight 29 Swivel, Elevating boom frame 30 Wire rope hoisting elevating device 31 Wire rope 32 Wire rope fixed end 33 Boom sheave support pivot 34 Boom sheave support pivot 35 Wire rope hoist gantry 36 Belt Conveyor 37 Dispenser 38 Relay Belt Conveyor 39 Inboard Vertical Belt Conveyor 40 Swivel, Elevating Boom Belt Conveyor 41 Upper Swivel, Elevating Boom Conveyor Belt 42 Lower Swivel, Elevating Boom Conveyor Belt 43 Sheave Hanger 44 Telescopic Chute 45 Conveyor Guide Roller 46 Swivel Cap 47 sheave 48 cover 49 inboard belt conveyor unloading device upper mount 50 mount stopper 51 handrail fence 52 winch mounting frame 53 take-up weight stopper 54 upper limit Switch 55 Lower limit switch 56 Crane 57 Hanging shaft pin 58 Sheave hanger F1 Boom frame elevating direction (elevating angle) F2 Boom frame turning direction (swing angle) G Wharf H Hull horizon L Sea level M Conveyor drive three-phase induction Electric motor MB Electromagnetic brake MC Hansen reducer O Swing center OO Swing center line U Boom frame rising position and other related parts position X Boom frame rising middle position and other related parts positions Y Horizontal position of the boom frame and the position of other parts related thereto Z Lowering position of the boom frame and the position of other parts related thereto W Electric winch for elevating

Claims (1)

(57) [Claims] 1. A bulk unloading machine installed on a bulk carrier, for turning a load of ore conveyed onboard by a belt conveyor inside the ship, and supplying the ore load to a land-side hopper by a lifting boom belt conveyor. Equipped with a swivel device for a swiveling and raising boom belt conveyor and a wire rope hoisting type raising device, a boom frame raising device consisting of a winch, sheave, and a wire rope, where one end of a wire rope is fixed to a winch drum and the other end is Is fixed to the winch mount installed on the boom frame, the wire rope is wound, the take-up weight integrated with the suspended sheave is suspended, and the take-up weight is guided along the guide suspended by the winch mount. The wire rope tension by adjusting the weight of the take-up weight. , And the tip of the boom frame can be supported by the ground-side hopper by the elevating device.