JPH0330341Y2 - - Google Patents

Description

[Detailed description of the invention] (Related technical field) When a vertical screw conveyor type unloader handles bulk items by itself, the height of the remaining load at the bottom is 100 to 200 mm at the center. In addition, it can reach 500 to 600 mm at the corners. The present invention relates to a vertical screw conveyor that is equipped with an auxiliary device that makes it possible to scrape the bottom to reduce the amount of remaining cargo to as little as possible.

(Prior art) Conventionally, the bottom of a ship was scraped using a bulldozer suspended inside the ship. However, raking up cargo using bulldozers is inefficient, and an improvement has been desired.

(Problems to be solved by the invention) The problems of the conventional technology are solved by attaching auxiliary equipment for bottom roughening to the vertical screw conveyor, and storing it above when not during bottom roughening. To provide a vertical screw conveyor type unloader capable of unloading a residual bottom load onto a residual bottom load and immediately moving to bottom scouring work.

(Devised solution) In a vertical screw conveyor type unloader in which a screw conveyor is suspended from the tip of the jib and a bulk material intake is provided at the bottom of the screw conveyor, a screw is installed near the top of the bulk material intake. A rotary cylinder is attached to an outer cylinder rotatably attached to the lower part of the conveyor cylinder, and a drive device for driving the rotary cylinder via gears is provided on the side of the screw conveyor cylinder. , and in the rotating cylinder at a certain distance above the bulk material intake port,
A rotating/fixed frame is provided, one end of a link frame is pivotally connected to the rotating/fixed frame so that it can be raised and lowered, and a bottom leveling device is pivoted to the lower end of the link frame so that it can be raised and lowered. A levitation device consisting of a motor and a chain is provided on the fixed frame to raise and lower the bottom scouring device, and the bottom scouring device is provided with a wide blade on each link of an endless link chain,
This made it possible to find the bottom efficiently.

(Embodiment of the invention) Fig. 1 shows a vertical screw conveyor type unloader (hereinafter simply referred to as an unloader) 1 according to the invention, which is used for loading bulk materials loaded on a ship 2,
Especially when the bottom of the ship is being scraped.

The unloader 1 has a screw conveyor 29 suspended from the tip of the jib 3, and thrusts the screw conveyor 29 into loose materials in the hold, transporting the loose materials onto the jib 3 via the screw conveyor 29. It is now transported horizontally using a conveyor and transferred to a storage tank on land.

The screw conveyor 29 includes a vertical screw 5 driven by a motor 4 at the top, a cylinder 30 of the vertical screw 5, an outer cylinder 31 rotatably attached to the lower part of the cylinder 30, and an outer cylinder 31. It consists of a drive device that rotates the Reference numeral 6 denotes a bulk material intake port formed at the lower end of the outer cylinder 31. A rotating cylinder 27 is rotatably attached to the outer periphery of the outer cylinder 31, and a motor 23 is attached to the cylinder 30 via a ring gear 21 attached to the upper end of the rotating cylinder 27.
It is designed to rotate by the drive of a pinion 22. A ring gear 24 is attached to the upper end of the outer cylinder 31 and meshes with a pinion 25 of a motor 26 attached to the cylinder 30.

Therefore, when the motor 23 is rotated, the rotation is transmitted via the pinion 22 → ring gear 21, and the bottom roughening device 7, which will be described later, is transferred to the screw conveyor 29.
Swirl around. Further, by means of a brake device built into the motor 23, the mounting position of the bottom scraping device 7 relative to the screw conveyor 29 can be changed and fixed.

16 is a rotating shaft attached to the side wall of the rotating cylinder 27.
The rotary/fixed frame 16 is a fixed frame, and is attached to a position slightly above the lower end of the screw conveyor 29, and a bottom roughening device 7 is pivotably mounted thereon via a link frame 15, which will be described later.

The bottom scouring device 7 has a wide rubber blade 9 attached to a link chain 8, and a second
Sprocket wheels 12, 13 as shown in the figure
and screw conveyor 2 via chain 11
It rotates in the direction (arrow a in Fig. 2) of raking the load toward the intake port 6 of 9. A guide side plate 8'' is attached to the link chain winding frame 8' so that the link chain 8 to be wound has an inverted triangular shape in side view (FIG. 4).

The drive is performed by rotating a drive shaft 14 from a motor 10 via a roller chain 11 and sprocket wheels 12 and 13.

The bottom rasping device 7 has a rotating/fixed frame 16 in order to follow the vertical movement of the ship and the tilt angle when the screw conveyor 29 is tilted for cargo handling.
It is pivotally connected to via a link frame 15.

One end of the link frame 15 is pivoted to the lower part of the rotating/fixed frame 16 via a pin 15', and the other end is rotatably connected to the end of the link chain winding frame 8' on the screw conveyor 29 side. ing.

8A is an arm protruding from the link chain winding frame 8', and an engaging portion 8B to the link frame body 15.
The rotating angle of the bottom roughening device 7 with respect to the link frame 15 is regulated.

In addition, the bottom roughening device 7 hoists the chain 18 by means of a motor 17 attached to the rotating/fixed frame 16 when the bottom is not being roughened, that is, when a heavy load or a medium load is being carried out.
The frame 20 of the bottom roughening device 7 is lifted by the hook 19 at the tip of the chain 18, first rotated upward around the drive shaft 14, and after the engaging portion 8B hits the link frame 15, the pin It can be stored by rotating upwards around 15' (the position shown by the imaginary line in Fig. 2). When the reverse chain 18 is loosened, it descends under its own weight to the position shown at the bottom of FIG. 4, that is, to a position approximately parallel to the vertical screw 5. In this state, the screw conveyor 29 also operates a cylinder (not shown) at its upper end to operate the cylinder shown in FIG.
If you tilt it slightly to the bottom of the ship as shown in numbers 3, 4, and 6,
The edges of the scouring device can be used to scouring narrow areas.

For example, in the case of pulverized coal, the angle of the blade 9 is
30° is required. If smaller than this, blade 9
The load on top is not discharged at the intake port, and the load is turned over with the load on the blade 9, which is inefficient. blade 9
is made of rubber and is designed to prevent damage to the bottom of the ship due to friction. The load scraped toward the lower end of the screw conveyor 29 is scraped in by the intake port 6 which is driven and rotated, and is conveyed upward by the vertical screw 5.

(Function) Now, we will explain how to unload bulk materials on a ship using the apparatus configured as described above.

1. With the bottom roughening device 7 hoisted up and stored by the chain 18, smooth the topmost layer, remove the 1st layer, remove the 2nd layer, remove the 3rd layer, remove the 4th layer... .

When transporting bulk materials using the screw conveyor 29, the lower end of the screw conveyor 29 is normally inserted to the extent that it is slightly buried in the loose materials, but in this application, the bottom roughening device 7 is inserted into the link frame 15.
Since the lower end of the rotating/fixed frame 16 can be raised and lowered, it can be stored at a certain distance from the lower end of the screw conveyor 29, and will not interfere with the lifting work of bulk materials.

2 When the bottom of the ship is reached after the fourth layer has been removed, the bottom scouring device 7 according to the present invention is lowered and the bottom scouring operation begins.

3 The bottom of the ship is scraped using this device as follows.

a. Move it along the length of the boat, perform side cutting and remove the bottom. This method is shown in Figure 3 1~
Repeat step 6 several times until only the cargo remains in the center of the ship (see the hatched area 28 in the center of Figure 3).

b For the final bottom roughening, the load 28 remaining in the center part is removed by operating the drive device of the rotary cylinder 27, as shown in FIG. 3, while rotating the bottom roughening device 7 in a fan shape. Rotate (by removing the rear cutting) so that there is no problem. In this case, the vertical screw 5 is held vertically or slightly inclined. Even when the bottom scouring device 7 rotates, the bottom scouring is performed by keeping the blade 9 in constant contact with the bottom of the ship.

(Effect of the invention) A bottom roughening device having a rubber blade attached to an endless chain is attached to the lower part of a vertical screw conveyor type unloader via a link frame, and the bottom roughening device is made rotatable and undulating. It can be stored upwards. As a result, no matter which direction the remaining load is located, the bottom rasping device can be rotated in that direction to align the position, making it possible to carry out the bottom rasing work quickly. Since it can follow the vertical movement of the ship, it has become possible to efficiently scrape the bottom of the ship without causing any damage to it.

Therefore, it is no longer necessary to carry out the troublesome work of scraping the bottom of a ship by suspending a bulldozer inside the ship as in the past.

[Brief explanation of the drawing]

FIG. 1 shows a vertical screw conveyor type unloader embodying the present invention. FIG. 2 shows the lower structure of the unloader. FIG. 3 is an example of the bottom scouring process using the unloader according to the present invention. FIG. 4 is a side view of the bottom scouring device, showing the horizontal state, the inclined state, and the retracted state. In the figure: 1... Vertical screw conveyor type unloader (unloader), 2... Ship, 3... Jib, 4... Motor, 5... Vertical screw, 6...
...Intake port, 7... Bottom roughening device, 8... Link chain, 8'... Winding frame, 8''... Guide side plate, 8A... Arm, 8B... Engaging portion, 9...
(Rubber) blade, 10...Motor, 11...
...Roller chain, 12, 13...Sprocket wheel, 14...Drive shaft, 15...Link frame, 15'...Pin, 16...Swivel/fixed frame, 17...Motor, 18...Chain, 19...
... Hook, 20 ... Frame body, 21 ... Ring gear,
22... Pinion, 23... Motor, 24... Ring gear, 25... Pinion, 26... Motor,
27... Rotating tube, 28... Remaining cargo (in the center of the ship), 29... Screw conveyor, 30... Tube,
31... Outer cylinder.

Claims (1)

[Scope of utility model registration request] In a vertical screw conveyor type unloader in which a screw conveyor 29 is suspended from the tip of the jib 3 and a bulk material intake port 6 is provided at the bottom of the screw conveyor 29, a screw is provided near the top of the bulk material intake port 6. A rotatable rotary cylinder 27 is attached to an outer cylinder 31 rotatably attached to the lower part of a cylinder 30 of the conveyor 29, and the drive devices 23 and 22 for driving the rotary cylinder 27 via gears are connected to the screws. A rotating/fixing frame 16 is provided on the side of the tube 30 of the conveyor 29 and at a certain distance above the bulk material intake port 6 on the rotary tube 27. 15
A motor 17 having one end pivotably attached to the lower end of the link frame body 15 so as to be able to raise and lower, and further pivoting the bottom roughening device 7 to the lower end of the link frame 15 so as to be able to raise and lower, and causing the bottom roughening device 7 to be raised and lowered by the rotating/fixed frame 16. and chain 18
The vertical screw conveyor type unloader is characterized in that the bottom roughening device 7 is provided with a wide blade 9 on each link of an endless link chain 8.