JP2556043Y2 - Bulk cargo handling equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

INDUSTRIAL APPLICABILITY The present invention is capable of efficiently discharging bulk materials in a storage tank for loading or discharging various granular materials into a storage tank, in particular, bulk materials in a storage tank surrounded by a three-sided wall. It relates to a reclaimer or a stacker reclaimer with loading and dispensing functions.

[0002]

2. Description of the Related Art As a loading / discharging facility for bulk materials such as coal, minerals, and grains, a storage tank surrounded by a wall is raised on three sides, and a piece from an open low wall (front wall) to an opposite side. There has been proposed a stacker / reclaimer in which a bridge-shaped girder is installed over a wall (rear wall), and an elevator type reclaimer and a tripper type stacker are juxtaposed on the girder so as to be able to run in the longitudinal direction of the girder (practical application). Hei 4-36813). In this case, the bucket elevator of the reclaimer is supported by the bogie traveling on the girder so as to be able to turn up and down, and as the bogie moves from the front side wall to the rear side wall on the open side of the storage tank, the bucket elevator Paying while moving from the front to the rear wall side in the inclined position, and finally, tracing the tank bottom in the upright posture and paying out the pile at the corner between the rear wall and the tank bottom I do.

As another example, one end of a carrying-out jib is pivotally supported on the tank end on the paying-out side so as to be able to turn up and down, and a carrying-out chain is endlessly bridged between both ends of the jib. There is a structure in which piles piled up in a mountain shape are discharged from one side of the slope while falling down to the bottom of the tank (Japanese Patent Publication No. 57-24289). In addition, a gantry column connected to the mountain shape is provided so as to be able to run on the ground surface, at least one end of the scraper arm is pivotally connected to the base of one of the gantry columns, and piled up on the ground surface between the two gantry columns in a mountain shape. There is also known a bulk material discharging device for discharging a bulk material stack from the base of the gantry support onto a conveyor with the lateral movement of the scraper arm (Japanese Patent Publication No. 58-39740).

[0004]

The structure in which a bulk material is transported upward from a pile by a bucket elevator and then sent to a ground conveyor via a conveyor in a girder is used because the bulk material is lifted high and then sent downward again to consume power. The volume is large, the setting of the bucket elevator on the first pile surface is difficult and the operation is complicated. In particular, there is a danger that loose objects may fall at the corners while the bucket elevator is in a vertical state parallel to the wall from an inclined position near the wall such as one side, and the payout capacity is reduced due to the collapse in automatic operation. Therefore, it is necessary to work carefully by manual operation by skilled work.

[0005] In the above-described bulky sediment transporting device disclosed in Japanese Patent Publication No. 57-24289, the jib tip comes into contact with the tank bottom because the unloading jib is not bent in the middle. In this state, dead space is generated below the jib, and it is impossible to make the bottom bottom. In addition, there is a danger that loose materials remaining on the tank wall on the jib tip side and the base side (pivot side) of the unloading jib may collapse, and the storage capacity of the loose materials is not sufficient on the tank structure. The bulk material transporting device disclosed in Japanese Patent Publication No. 58-39740 discloses that a bulk material deposited in a flat storage place without taking the form of a storage tank surrounded by walls on three sides is formed along the entire slope on one side. It is a structure that scrapes off with a scraper, and when scraping a mountain of new bulk material, the tip of the scraper arm projects greatly upward from the upper end of the pile,
Since the scraper chain is wrapped around both ends of the arm endlessly, there is a problem that the carrying-out efficiency is poor.

The present invention provides a bulk material which can be dispensed with a small amount of collapsing and residual amount at the bottom of the storage tank, especially the portion adjacent to the wall, is easy to operate, and can be dispensed with a large volume from a large volume. An object of the present invention is to provide a cargo handling device.

[0007]

According to the bulk cargo handling device of the present invention, a girder provided so as to straddle from one side of a storage tank surrounded by walls on three sides to the open side ground, and a base end. A scraper facing the fixed position on the open side of the storage tank and having an intermediate portion bendably connected to the scraper, wherein the scraper has a first portion extending from the intermediate connection portion to the storage tank one wall side and a storage portion from the halfway connection portion. A two-piece hoisting device having a second portion extending to a fixed position on the tank opening side, and suspending the first portion of the scraper on the girder, and a tip of the first portion of the scraper And a scraper chain suspended vertically from the girder. The scraper has a second end rotatably supported at its base end around the storage tank open side fixed position. Is the tank bottom from the posture bent at the halfway connection Crawling has a displaceable into extended position, wherein the scraper is brought into close mutual agreement on the tank bottom scraping chain is extended close to the piece wall of the reservoir.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. The bulk cargo handling apparatus of this embodiment is an example in which the bulk cargo handling apparatus is configured as a stacker / reclaimer for loading and discharging bulk materials to and from a storage tank 30 surrounded by walls. One side along the longitudinal direction of the storage tank 30 is open, and the opposite side is formed with a wall 31 at the same height as both ends in the longitudinal direction of the tank. On the base floor 32 on the open side, the ground conveyor 13 is mounted, and on the wall 31 on the opposite side, the conveyor 1 having the tripper 2 is installed so as to extend in parallel with the storage tank 30. The girder 8 disposed on the open base floor 32 from the upper surface of the wall 31 so as to straddle the storage tank 30 is provided so as to reciprocate in the longitudinal direction of the tank 30 via rails and wheels 21 and 20 as described above. I have.

Referring to FIGS. 1 and 2, the upper loading conveyor 3 is fixed along the upper part of the girder 8 from the tripper 2 portion of the carry-in conveyor 1 to the middle of the girder. On the lower side, a lower storage conveyor 4 held by a carriage 33 running along the longitudinal direction of the girder 8 is provided so as to be able to reciprocate. It is to be noted that the lower loading conveyor 4 at least partially overlaps the tip of the upper loading conveyor 3 in an arbitrary moving position in the vertical direction. Chutes 5 and 6 are attached to the lower part of the bogie 33 near both ends of the lower stowage conveyor 4, whereby the bulk material taken in from the carry-in conveyor 1 via the tripper 2 to the upper stowage conveyor 3 is lower stowed. The trolley 33 is dispensed onto the conveyor 4 and the trolley 33 is reciprocated to be loaded into the tank 30 from the chute 5 or the chute 6 on the trolley 33. The trolley 33 travels from a position close to the wall 31 such as one side of the storage tank 30 to a position closer to the open side by a distance of about ／ of the tank width. Therefore, the pile 9 deposited in the tank is shown in FIG. 2 or FIG. As shown in the drawing, the upper end is horizontal in the traveling range of the bogie 33, and between the open end stop position of the bogie 33 and the tank open end, the slope is stowed by the angle of repose. By running the girder 8, the entire area in the tank is stowed in the sectional state shown in FIGS.

[0010] A chain winding comprising first to third portions extending from the vicinity of one side wall 31 of the storage tank 30 to the upper side of the discharge conveyor 13 along the longitudinal direction of the girder 8. A dynamic scraper is arranged. The first scraper (first portion) 10 extends from the upper end of the slope of the pile 9 toward the wall 31 on one side when the storage tank 30 is fully loaded, and the second scraper (second portion) 11 includes the first scraper 10. And extends to the lower end of the slope of the pile 9 and is pivotally connected to the lower part of the girder 8 via a pivot at the lower end. A trough 18 is fixed to the lower part of the girder 8 from the tank bottom at the lower end of the second scraper 11 to near the upper part of the carry-out conveyor 13.
8, a third scraper (third portion) 12 from the lower end pivot portion of the second scraper 11 to a position above the carry-out conveyor 13.
Are fixed to the lower part of the girder 8.

The first, second and third scrapers 1
In this embodiment, the chains 0, 11, and 12 are constructed by hanging parallel double-row chains on sprockets at both ends of the long frame 24, and attaching a scraping blade to these chains. The first scraper 10 is suspended from the girder 8 at least at two locations separated in the longitudinal direction by a lifting drive. Specifically, a pair of winches 14, 16 are installed on the girder 8, and the wire rope 15 and the tension bar 34
, The sprocket shaft portion at the base end of the first scraper 10 is suspended, and a halfway portion from the other winch 16 similarly to the distal end of the first scraper 10 via the wire rope 17 and the tension bar 35 is suspended. Have been.

5 and 6, one end of a scraping chain 25 is connected to a bracket 37 protruding from a sprocket shaft 36 in a radial direction. 31 A toothed constant pulley (sprocket) 2 which is supported by a support 38 of the girder 8 above.
The other end is fixed to the upper part of the girder 8 through the gear wheels 6, 27 and a toothed moving pulley (sprocket) 28. A weight 29 is attached to the moving pulley 28, so that the entire scraping chain 25 is kept in tension. The position of the fixed pulley 26 and the length of the chain 25 are such that when the first and second scrapers 10 and 11 are lowered to the tank bottom (described later), the chain 25 extends along the wall 31 on one side to the tank bottom. The position and length are determined as possible.

The pile 9 of bulk materials deposited in the storage tank 30 by the stacker to the specified maximum amount has a flat upper surface reaching the height of the wall 31 and a slope inclined to the open side as described above. The pile 9 has a trapezoidal cross section.
When paying out from this state, first, both winches 14, 1
6 causes the first scraper 10 to be positioned parallel to the horizontal upper surface of the pile 9. At this time, the second scraper 11 bends at the connection portion with the first scraper 10 and assumes a posture along the slope of the pile 9. By rotating the scraper chain with the scraping blade to eject loose materials from the chute 19 below the tip of the third scraper 12 to the carry-out conveyor 13, the winch 14 on the open end side is operated and the broken line in FIG. Then, the first and second scrapers 10 and 11 are lowered until they become linear as shown by. Since the base end of the second scraper 11 is pivotally attached to the lower end of the girder, the tip end (the wall side) of the first scraper 10 is pulled by the scraping chain 25 and moves closer to the wall 31 as one side.

After the first and second scrapers 10 and 11 are aligned, the two winches 14 and 16 are tuned to operate.
While maintaining this linear state, it is lowered to the tank bottom. At this time, the scraping chain 25 hanging the tip of the first scraper 10 extends close to the wall 31 like one side, and
The scraps that adhere to or remain in the vicinity are scraped off. Since the scraping chain 25 extends along the wall 31 under tension by the weight 29, it is possible to effectively scrape loose materials between the rear end of the first scraper 10 and the wall 31 during the scraper dispensing operation. After the girder 8 travels, the bulk material does not fall down from the wall 31, and the small amount can be dispensed to the corner of the storage tank 30 and the portion in contact with the wall.

The cargo handling apparatus of the present invention is not limited to a stacking / discharging machine having a stacker and a reclaimer as in the above-described embodiment, but is configured as a single dispensing machine having only a reclaimer in a girder. Such a form may be included in the present invention.

[0016]

[Effects of the Invention] As described above, according to the present invention, unlike the bucket elevator type, since the bulk material is not lifted to the upper part of the storage tank and then discharged to the conveyor, power consumption is small and the weight is small. It can be made lighter and cost can be reduced. The scraper initially bends along the pile surface,
Since it extends horizontally across the length of the tank near the bottom of the tank, there is no need to move it in the width direction of the tank at the bottom of the tank. On the wall like one side of the storage tank, scraps are scraped off with a chain that suspends the rear end of the scraper,
There is no pile collapse near the wall after dispensing, and a small amount of dispensing can be performed up to the corner of the storage tank. The operation is simple, and effects such as automatic payout by remote control are provided.

[Brief description of the drawings]

FIG. 1 is a plan view of a stacker reclaimer according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along line AA of FIG.

FIG. 3 is a transverse sectional view taken along line BB of FIG. 1;

FIG. 4 is a schematic side sectional view of a first scraper portion taken along line CC of FIG. 3;

FIG. 5 is a partially enlarged view showing a suspended state of a scraper rear end by a scraping chain.

FIG. 6 is a partial side view as viewed from an arrow F in FIG. 5;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 carry-in conveyor 2 tripper 3 upper stacking conveyor 4 lower stacking conveyor 8 girder 9 pile 10 first scraper 11 second scraper 12 third scraper 13 carry-out conveyor 14,16 winch 15,17 wire rope 18 trough 25 scraping chain 29 weight 30 storage tank 31 wall

Claims (2)

(57) [Scope of request for utility model registration] 1. A girder provided so as to straddle from one wall of a storage tank surrounded by walls on three sides to the open side ground, and a middle part bent at a base end facing a fixed position on the open side of the storage tank. A scraper operably connected to the scraper, the scraper having a first portion extending from the halfway connection to the storage tank one wall side and a second portion extending from the halfway connection to the storage tank open side fixed position; A two-piece hoisting device that suspends the first portion of the scraper on the girder, and a scraping chain that suspends the tip of the first portion of the scraper up and down on the girder. The second end of the scraper is supported at its base end so as to be pivotable about the storage tank open side fixed position, and the scraper extends from the bent position at the intermediate connection portion to the bottom of the tank. Can be displaced to There loose material handling device, characterized in that said scraper chain As the close mutual agreement on the tank bottom extending close to the piece wall of the reservoir. 2. A first conveyor movably mounted on the girder adjacent to the scraper and having a chute on a lower side, and the girder partially overlaps above the first conveyor. The bulk material according to claim 1, further comprising a stacker having a second conveyor disposed above and extending to a tripper of a carry-in conveyor installed on the one wall side of the storage tank. Cargo handling equipment.