JP2501923Y2 - Continuous unloader - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous unloader for scraping and unloading bulk materials loaded on a ship by a bucket conveyor which is circularly driven.

[0002]

2. Description of the Related Art In an unloader for unloading loose materials such as coal or ore or powder or the like loaded on a ship, the loose materials on the ship are continuously scraped and unloaded by a circulating bucket conveyor. A continuous unloader is used.

As shown in FIG. 3, the continuous unloader comprises a boom 3 supported by a traveling unit 2 which is capable of traveling on a pier 1 so that it can be swung up and down, and a top support frame which is connected to the tip of the boom 3. 4, an elevator casing 7 that is supported in the vertical direction and accommodates the elevator portion 6 of the bucket conveyor 5, and a scraping portion 8 of the bucket conveyor 5 that extends horizontally at the lower end of the elevator casing 7.
And a drive device 9 for circulatingly driving the bucket conveyor 5 between the elevator part 6 and the scraping part 8, and in the case of loading and unloading bulk materials and the like in the ship 10, from the hatch 11 The bucket conveyor 5 is inserted and the scraps 12 are scraped off by the scraping section 8, and the scraped scraps 12 are conveyed upward along the elevator casing 7, and the bucket conveyor 5 is inverted to convey the scraps. Thirteen
Was transferred to and unloaded.

Further, in the above-mentioned continuous unloader,
The scraping part 8 is formed by an expandable telescopic frame 14 so that the bulk material 12 on the port side can be scraped off from the elevator part 6 vertically inserted from the hatch 11, and the bulky material 12 on the port side is unloaded by extending this. It was supposed to do.

[0005]

However, in the above-mentioned one, since the length of the bucket conveyor 5 is invariable, when the telescopic frame 14 is expanded and contracted, the belt conveyor 5 is not changed.
Telescopic frame 1 due to insufficient length or slack
There is a problem in that an elevating mechanism for elevating the scraping unit 8 in correspondence with the expansion and contraction of No. 4 is required, and the mechanism becomes complicated.

As another example, a parallelogram link is provided between the lower end of the elevator casing 7 and the scraping section 8 so that the scraping section 8 can be moved horizontally through the parallelogram link. There is something I did.

However, in such a structure, there is a problem that if the unloader becomes large, the link mechanism becomes large and the weight of the entire apparatus increases, leading to an increase in cost. When used, the scraping unit 8 cannot be swung at an arbitrary angle. Therefore, when the ship bottom is tilted, the scraping unit 8 can be slid along the slope.
There was a problem that you could not move.

Therefore, in the present invention, in order to solve the above problems, the scraping portion can be horizontally moved by a simple mechanism.
Another object of the present invention is to provide a continuous unloader capable of swinging the scraping unit at an arbitrary angle.

[0009]

In order to achieve the above object, the present invention divides an elevator casing for accommodating an elevator portion of a bucket conveyor into upper and lower parts, and rotatably connects a lower casing to an upper casing. In addition, a scraping portion of a bucket conveyor extending horizontally is swingably connected to the lower end of the lower casing, and a tilting cylinder for adjusting the tilt angle of the lower casing is connected between the upper and lower casings. In addition, a tilting movement cylinder that expands and contracts according to tilting is provided between the casings, and a swinging cylinder that adjusts the swinging angle of the scraping unit is provided between the lower casing and the scraping unit. In order to keep the scraping part horizontal by following the angle, the cylinder chambers of the tilt-motion cylinder and the rocking cylinder are connected via a hydraulic pipe. It is obtained by configuration Te.

[0010]

[Operation] When unloading loose materials etc. on board, the elevator casing forming the bucket conveyor and the scraping part are inserted from the hatch into the ship, and the scraping parts are scraped off and transferred to the upper side. When unloading bulk items on the port side, the lower casing may be tilted at an arbitrary angle before unloading.

At this time, when the lower casing is tilted at an arbitrary angle, the tilting-following cylinder expands and contracts according to the tilting angle, and the rocking cylinder is expanded and contracted by the working oil discharged by the expansion and contraction, and the scraping portion. Is swung, the swing angle of the scraping unit is adjusted in accordance with the tilting angle of the lower casing, and the horizontal level of the scraping unit is automatically maintained.

Further, by operating only the rocking cylinder, the scraping section can be swung at an arbitrary angle regardless of the lower casing, and even if the ship bottom is slanted, the scraping section can be slid along the slant. Can be moved and unloaded.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

1 and 2 illustrate an embodiment of the continuous unloader of the present invention.

In this embodiment, the same components as those of the conventional example shown in FIG. 3 are designated by the same reference numerals and detailed description thereof will be omitted.

In FIG. 1, reference numeral 7 is an elevator casing. The elevator casing 7 accommodates an elevator section 6 of a bucket conveyor 5, and a lower end of the bucket conveyor 5 extends horizontally. Take part 8
Is provided, and the bucket conveyor 5 is connected to the drive chain 15 that circulates between the elevator unit 6 and the scraping unit 8 and is connected to the drive chain 15, and the scraping unit 8 is provided.
And a large number of buckets 16 for scraping and transporting the load.

The elevator casing 7 is rotatably supported on a boom 3 which can be swung up and down via a top support frame 4, and a machine room 17 for accommodating the drive device 9 of the bucket conveyor 5 and the like is provided on the top thereof. In the machine room 17, a drive sprocket 18 around which the drive chain 15 of the bucket conveyor 5 is suspended is rotatably provided, and a drive motor 19 for rotationally driving the drive sprocket 18 is provided. The bucket 16 of the bucket conveyor 5 is provided downstream of the sprocket 18.
Bucket reversing device 20 for reversing and discharging a load
And a table feeder 21 for receiving and discharging the load from the bucket 16 is provided between the machine room 17 and the elevator casing 7 so as to be rotatable around the elevator casing 7 as an axis. A transport conveyor 13 that receives and transports the load discharged from the table feeder 21 is connected to 4.

In the present invention, the elevator casing 7 is divided into an upper casing 22 and a lower casing 23, and the upper casing 22 includes the top support frame 4
Is rotatably supported on the outer periphery of the lower casing 23, and a bulging portion 24 bulging in an arc shape is formed on the outer periphery of the lower end portion of the lower casing 23. A concentric bulge portion 25 (shown by a dotted line in the figure) is formed, and the lower casing 23 is rotatably connected via a tilting shaft 26 that passes through the bulge portions 24 and 25, and is connected to the upper casing 22 and the lower portion. A tilt cylinder 27 for adjusting the tilt angle of the lower casing 23 is provided between the casings 23.
Is provided.

The tilting cylinder 27 is, as shown,
The expansion / contraction upper end is connected to the outer peripheral surface of the bulging portion 24 of the upper casing 22, and the base-side lower end thereof is connected to the outer peripheral surface of the lower casing 23. The expansion / contraction of the expansion / contraction portion 27a rotates the lower casing 23 around the tilt shaft 26. The tilt angle is adjusted accordingly.

Further, between the upper casing 22 and the lower casing 23, there is provided a tilting copying cylinder 28 which expands and contracts according to the tilting of the lower casing 23. As shown in the drawing, the tilting copying cylinder 28 includes the upper casing 22.
Is provided between the outer peripheral surface of the bulging portion 24 and the outer peripheral surface of the lower casing 23 so as to face the tilting cylinder 27, and the expansion / contraction direction of the tilting cylinder 27 is compressed by the compressive force or the tensile force when the lower casing 22 tilts. It is designed to expand and contract in the opposite direction.

A guide frame 29 is provided inside the lower casing 22 for guiding up and down movement of the elevator section 6 of the bucket conveyor 5 along the axis thereof, and the lower end of the guide frame 29 extends downward from the lower casing 22. The scraping portion 8 extending in the horizontal direction is swingably connected to the extended lower end portion, and between the lower end portion of the guide frame 29 and the scraping portion 8, A swing cylinder 30 for adjusting the swing angle of the scraping unit 8 is provided.

As shown in the figure, the scraping portion 8 is swingably connected to a lower end portion of a guide frame 29 with a horizontal frame 31 extending horizontally at equal intervals in both directions. The swing shaft 3 which is inserted in the same axial direction as the tilt shaft 26
It is pivotally mounted at 2, and driven sprockets 33, 34 around which the drive chain 15 of the bucket conveyor 5 is stretched are rotatably provided on both sides of the horizontal frame 31.

The swing cylinder 30 has its base end connected to the cylinder support 35 at the lower end of the guide frame 29, and its expandable end connected to the upper surface of the horizontal frame 31. The horizontal frame 31 swings. When the moving cylinder 30 is expanded and contracted, it is swung around the swing shaft 32.

Further, the cylinder chamber 36 of the swing cylinder 30
Is communicated with a cylinder chamber 37 of the tilting movement cylinder 28 through a hydraulic pipe 38 (shown by a dotted line in the drawing). More specifically, as shown in FIG. 2, the base side cylinder chamber 37a of the tilting movement cylinder 28 and the base side cylinder chamber 36a of the swing cylinder 30 are connected by a hydraulic pipe 38a, and the expansion / contraction side of the tilting movement cylinder 28 is connected. A hydraulic pipe 38 is provided between the cylinder chamber 37b and the cylinder chamber 36b of the rocking cylinder 30 on the side of the expansion / contraction portion.
b, the cylinder chambers 36a, 37a are connected to each other and the cylinder chambers 36b, 3b are connected via these hydraulic pipes 38a, 38b.
7b communicate with each other, and when the tilting movement cylinder 28 expands and contracts due to the tilting of the lower casing 23, the rocking cylinder 31 is expanded and contracted in the opposite direction by the hydraulic oil discharged from the cylinder chamber 36. The swing angle of the horizontal frame 31 is adjusted so as to maintain the horizontal level.

The hydraulic pipe 38 is connected to a hydraulic power source 40 via a hydraulic circuit 39, and in the middle of the hydraulic pipe 38,
A control valve 41 that is controlled to supply hydraulic oil only to the rocking cylinder 30 is provided, and by closing the control valve 41,
Hydraulic oil is supplied from the hydraulic circuit 39 to the swing cylinder 30, and the horizontal frame 31 is swung at an arbitrary angle by expanding and contracting regardless of the operation of the tilting movement cylinder 28.

Next, the operation of the above embodiment will be described.

When unloading loose items, etc., the boom conveyor 3 is used to insert the bucket conveyor 7 into the boat from the hatch (not shown), and the scraping unit 8 is used to scrape loose items. While taking and accommodating in the bucket 16, the bucket 16 is moved upward along the elevator casing 7,
The bucket 16 is inverted by the bucket reversing device 20 and discharged to the table feeder 21, and then discharged from the table feeder 21 to the transport conveyor 13.

When unloading the cargo on the port side of the ship, the tilting cylinder 27 is expanded / contracted to lower the casing 23.
After tilting in the direction of the port side, the scraping unit 8 may scrape the load and unload it.

At this time, when the tilting cylinder 27 is contracted and the lower casing 23 is tilted by the angle α, the tilting copying cylinder 28 extends, and the working oil in the telescopic portion side cylinder chamber 37b of the tilting copying cylinder 28 is discharged. The hydraulic oil is supplied through the hydraulic pipe 38b into the expansion / contraction part side cylinder chamber 36b of the rocking cylinder 30, and the rocking cylinder 30 is contracted by the hydraulic oil, so that the horizontal frame 31 has the angle α
The horizontal level of the scraping unit 8 is automatically maintained following the tilting of the lower casing.

When the horizontal frame 31 is rocked, the horizontal frame 31 is provided with the sprocket wheels 33 and 34 which are driven by the same distance about the rocking shaft 32, so that the horizontal frame 31 rocks by the angle α. However, the length of the drive belt 15 of the bucket conveyor 7 does not change, and it is not necessary to provide an elevating mechanism for elevating the scraping unit 8 as in the conventional example.

Further, since the rocking cylinder 31 is expanded and contracted by the hydraulic oil discharged from the tilting movement cylinder 28, the device for rocking the scraping portion 8 becomes simple and the cost can be reduced.

Further, when the scraping portion 8 is swung at an arbitrary angle, hydraulic oil from the hydraulic circuit 39 may be supplied to the swing cylinder 30, and even in the case of a ship with an inclined bottom. Since the scraping unit 8 can be swung in accordance with the inclined ship bottom, complete unloading can be performed.

[0033]

In summary, according to the present invention, since the tilting copying cylinder and the rocking cylinder are connected so as to communicate with each other, the scraping portion is automatically kept horizontal by following the tilting angle of the lower casing. Therefore, it is not necessary to specially provide a device for operating the oscillating cylinder, and it is possible to reduce the cost by reducing the weight of the entire device.

Further, since the scraping portion can be swung at an arbitrary angle regardless of the tilting of the lower casing, it is possible to completely unload even the tilted ship bottom.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view illustrating an embodiment of a continuous unloader of the present invention.

FIG. 2 is a schematic diagram illustrating a system of hydraulic pipes.

FIG. 3 is an overall view illustrating a conventional example.

[Explanation of symbols]

 5 Bucket Conveyor 6 Elevator Section 7 Elevator Casing 8 Scraping Section 22 Upper Casing 23 Lower Casing 27 Tilt Cylinder 28 Tilt Copy Cylinder 30 Swing Cylinder 36 Swing Cylinder Chamber 37 Cylinder Chamber of Tilt Copy Cylinder 38 Hydraulic Pipe

Claims (1)

(57) [Scope of utility model registration request] 1. An elevator casing for accommodating an elevator section of a bucket conveyor is vertically divided, a lower casing is rotatably connected to an upper casing, and the lower casing extends horizontally in a lower end portion thereof. The scraping part of the bucket conveyor to be taken out is swingably connected, a tilting cylinder for adjusting the tilt angle of the lower casing is connected between the upper and lower casings, and a tilting copying cylinder that expands and contracts according to the tilting between the casings. On the other hand, an oscillating cylinder for adjusting the oscillating angle of the scraping part is provided between the lower casing and the scraping part, and the scraping part is held horizontally in accordance with the inclination angle of the lower casing. A continuous unloader characterized in that the cylinder chambers of the tilting movement cylinder and the swing cylinder are communicated with each other via a hydraulic pipe.