JP3773969B2 - Table feeder in bulk goods transportation equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a table feeder used for supplying bulk material discharged from a conveyor, bucket elevator, hopper or the like to a next conveyor or the like in a bulk material transport facility.
[0002]
[Prior art]
For example, when unloading loose materials such as gravel, coal, ore, grain, feed, and wood chips transported by ship, a rail 52 and a wharf conveyor 53 are laid in parallel on the quay 51 as shown in FIG. An unloader is used in which a boom 56 is provided on a swivel base 55 placed on a traveling base 54 that moves on the vehicle so that the boom 56 can be raised and lowered, and a bucket elevator 57 is attached to the tip thereof.
[0003]
The bucket elevator 57 is swung as a whole and the tip collector portion 58 is raised and lowered, moved up and down by the boom 56, and moved by the traveling platform 54 and the swivel platform 55 in the longitudinal direction and the width direction of the ship. It is a continuous unloading that leaves almost nothing.
[0004]
The bulk material carried out from the ship by the bucket elevator 57 is transferred to the boom conveyor 59 installed along the boom 56, and passes through the chute 60 installed on the swivel base 55 and the relay conveyor 61 installed on the traveling base 54. 53. However, since the bucket elevator 57 swivels as a whole to take in the bulk, as described above, the bucket elevator 57 reverses at its upper end and changes the position where the bulk is discharged in the bucket. Therefore, a means for supplying the bulk material supplied to the irregular position on the circle centering on the turning center axis to the boom conveyor 59 becomes indispensable, and the table feeder 62 is used for that purpose.
[0005]
This table feeder 62 is formed in an annular shape so that the bucket elevator 57 passes through the center thereof, and as shown in FIG. 7, an inner frame 65 comprising a table 63 on which loose materials are placed and an inner flange 64 provided on the inner peripheral edge thereof. And an outer flange 66 facing the inner flange 64 disposed along the outer periphery of the table 63, and a scraper 67 for guiding the bulk material placed on the table 63 to the outer chute 69 in order to move it to the boom conveyor 59. It has. The table 63 is horizontally mounted on the wheels 71 of a plurality of drive mechanisms 72 composed of a prime mover 70 and wheels 71 arranged on the circumference and rotated in one direction, and a plurality of tables 63 arranged at appropriate intervals in the circumferential direction. The movement in the radial direction is restricted by bringing the side roller 73 into contact with the outer peripheral surface.
[0006]
[Problems to be solved by the invention]
The scraper 67 is installed obliquely across the table 63, changes the direction of the loose material on the table 63 as indicated by the arrow A, and guides it to the chute 69. As shown in the figure, the chute 69 is pivotally attached to the chute 68 and the tip is brought into contact with the inner flange 64 on the rotating side to block the loose substance and unload to the specific portion on the outer side, that is, the chute 69.
[0007]
In this way, in the table feeder 62 that does not have a fixed structure portion inside the rotating table 63, the scraper 67 is cantilevered, and the inner flange 64 is always free from leaks and bites. Since it can be rotated for contact, the bulk material that is sent almost continuously on the table 63 collides, accumulates, and receives a rotational force caused by pushing.
[0008]
Therefore, from the start to the end of the conveyance of the bulk material, the tip of the scraper 67 pushes the inner flange 64 to act to decenter the inner frame 65. For this reason, the side roller 73 disposed on the pushed side and the bearing portion thereof are In addition to being worn out or damaged early, there is a disadvantage that the resistance to the inner frame 65 increases and the load on the drive mechanism 72 increases.
[0009]
The present invention has an annular loading surface between the inner flange and the outer flange of the table as in the table feeder, for example, and the inner flange is provided on the table and rotates integrally, and the outer flange is separated from the table. There is a chute open on one side, and a scraper that guides loose objects on the loading surface to the chute is installed in a cantilever with the base end attached to the outer flange or chute and the tip in contact with the inner flange The problem to be solved by the table feeder is to solve the problem that some of the side rollers and their bearing parts are worn or damaged early, and the load on the drive mechanism is increased.
[0010]
[Means for Solving the Problems]
That is, according to the present invention, the scraper is fixed to the outer flange or chute so that the base end thereof is non-rotatable, and the guide portion obliquely crosses the loading surface. It shall consist of a sliding contact part.
[0011]
The guide part is held at a fixed position without touching the inner flange to block the loose material, and guides it outward to unload it to the chute. Even if it is pushed by the bulk material, the load is fixed at the base end. The part is received and does not work on the rotary table or inner flange. Further, the sliding contact portion is pushed by the bulk material and always contacts the inner flange, so that the bulk material does not leak or bite. And since this sliding contact part should just absorb a manufacturing tolerance, it can be made small, For this reason, the force which presses the inner flange produced by a loose substance is very small, and the influence on a side roller does not generate | occur | produce substantially.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
A preferred embodiment of the present invention will be described with reference to the drawings. FIG. 1 to FIG. 5 are table feeders applied to the bulk transportation equipment for unloading described in the above-described prior art. An inner frame 1 in which a flat circular inner flange 3 is fixed and erected on the inner peripheral edge of the annular table 2 through which the wrapped duct 74 passes, and is arranged concentrically with the inner flange 3 along the outer peripheral edge of the table 2 And an outer frame 5 including a chute 7 installed on the outer side of the outer flange 6 and a base 8 disposed below the table 2.
[0013]
The outer frame 5 does not rotate itself, is fixed to the tip of the boom 56 shown in FIG. 6, and supports the inner frame 1 and the duct 74 in a rotatable manner. That is, the inner frame 1 has a plurality of drive mechanisms 72 including a prime mover 70 such as a hydraulic motor and wheels 71 driven thereby, arranged on the base 8 at appropriate intervals in the circumferential direction, and the table 2 is placed on the wheels 71. It can be rotated in one direction by placing it horizontally. Further, the inner frame 1 is shifted in the radial direction by bringing side rollers 73 rotatably supported by a plurality of brackets 9 arranged on the base 8 at appropriate intervals in the circumferential direction into contact with the outer peripheral surface of the table 2. It rotates on a certain center without any problems.
[0014]
As described above, since the bucket elevator 57 turns to take in the bulk material in the ship, the bulk material discharged from the bucket inverted at the upper end is supplied to the unspecified position of the table 2 through the chute 75 of the duct 74. Is done. A scraper 11 is used to block the loose material supplied to the unspecified position, guide it outward, unload it to the chute 7, and transfer it to the boom conveyor 59 shown in FIG. It is installed at the entrance front end of the chute 7 toward the direction.
[0015]
The scraper 11 includes a rigid and long guide portion 12 and a short sliding contact portion 25 that is rotatably coupled to the tip of the guide portion 12 with reference to FIGS. Mounting flanges 14 and 15, which also serve as reinforcements projecting over the entire length of the back surface of the baffle plate 13, are provided between the flat bottom wall 18 at the side end of the chute 7 and the flange 20 projecting from the side wall 19 above it. The fixing bolt 23 is inserted through the through hole 21 of the flange 20 and the through hole 16 of the upper mounting flange 14 and screwed into the screw hole 17 of the lower mounting flange 15, and the tip is inserted into the through hole 22 of the flat bottom wall 18. Removably attached to the chute 7. Two sets of the through holes 21, 16, 22 and the screw holes 17 are provided at two positions in the front and rear. Therefore, the scraper 11 is fixed to the chute 7 by the two fixing bolts 23 so as not to rotate. Further, the contact pressure between the scraper 11 and the loading surface 10 which is the upper surface of the table 2 can be adjusted by adjusting the screwing amount of the fixing bolt 23 into the screw hole 17.
[0016]
The sliding contact portion 25 is overlapped with a scraper plate 27 made of an elastic material with its tip slightly protruded on the back surface of a back plate 26 made of a flat plate similar to the deflector plate 13, and is fixed to be removable and replaceable by a set screw. A mounting arm 29 protrudes from the upper edge of the base end portion of the plate 26 in the back direction. The mounting arm 29 is fitted into a notch 24 provided at the upper edge of the deflecting plate 13 to attach the base of the back plate 26. The end portion is overlapped on the front surface of the front end portion of the deflector plate 13 and is rotatably coupled to the front end of the guide portion 12 by a pin 30 inserted into the mounting arm 29 and the through holes of the mounting flanges 14 and 15.
[0017]
The lower edges of the baffle plate 13, the back plate 26, and the scraper plate 27 are flush with each other so as to be in uniform contact with the stacking surface 10 of the table 2. In the overlapped state, it is slightly separated from the inner flange 3 or is brought into contact without pressure.
[0018]
When the loose pieces discharged from the bucket elevator 57 are placed on the table 2 while driving the wheels 71 by the prime mover 70 and rotating the inner frame 1 counterclockwise in FIGS. It is sent toward the entrance of the chute 7 without being scattered by the flange 6, stopped by the scraper 11, and redirected outward and guided to the chute 7.
[0019]
Even if a loose object pushes the guide portion 12 of the scraper 11, the load is held by the two fixing bolts 23 and held at a fixed position without rotating. On the other hand, the sliding contact portion 25 is pushed by the loose object and pivots clockwise in FIGS. 1 and 3 around the pin 30, and the scraper 27 always contacts the inner flange 3 to absorb the manufacturing tolerance. Work so as not to cause leakage or biting. That is, since the sliding contact portion 25 is pivotally attached to the tip of the guide portion 12 for the purpose of absorbing manufacturing tolerances, it can be made sufficiently small. Therefore, a very small amount of loose material strikes this portion. Thus, the force pressing the inner flange 3 becomes extremely small, and the application of a load to the side roller 73 disposed on the pressed side of the scraper 11 is substantially eliminated.
[0020]
In the illustrated embodiment, the portion that contacts the inner flange 3 of the sliding contact portion 25 is a scraper 27 made of an elastic material, so that it adheres closely without increasing the pressing force of the inner flange 3 and is made of fine grains such as grains. The loose material can also be completely damped, and the scraper 27 is removable so that it can be easily replaced when worn.
[0021]
In addition, the guide part 12 can be fixed to the outer flange 6 in a non-rotatable manner using not only the chute 7 but also appropriate means such as welding or riveting using three or more fixing bolts 23.
[0022]
Further, the table feeder according to the present invention has a structure in which the inner flange 3 for preventing the dispersion of loose materials rotates integrally with the table 2 and the outer flange 6 does not rotate. Therefore, the bucket elevator 57 passes through the center portion. The table 2 is not limited to a disk, and the table 2 is a disk, and loose materials are loaded from a hopper, conveyor, etc. in a wide range, multiple locations, and unspecified locations on the peripheral loading surface 10 and then unloaded sequentially at the specified locations. It can be applied to various bulk transportation facilities.
[0023]
【The invention's effect】
As described above, in a table feeder in which the inner flange rotates integrally with the table and does not have a portion capable of fixing the tip of the scraper, only the tip portion rotates without turning the entire scraper. According to the present invention which is brought into contact with the flange, only the tip portion presses the inner flange with the pressure of the loose material blocked by the scraper, and the load acting on the side roller for regulating the radial movement of the table is hardly increased. Accordingly, there is no risk of early wear or damage to the side roller on the pushed side and its bearing portion, stable operation can be performed for a long time, maintenance work can be reduced, and the motor for driving the table is further reduced. The inconvenience of increasing the load more than necessary can be avoided.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of FIG.
FIG. 3 is an enlarged partial view of FIG. 1;
4 is an enlarged cross-sectional view taken along line XX of FIG.
FIG. 5 is an enlarged cross-sectional view taken along line YY in FIG.
FIG. 6 is a schematic diagram of a bulk transportation facility to which the present invention is applied.
7 is a partial plan view showing a conventional example of the table feeder in FIG. 6;
[Explanation of symbols]
1 inner frame, 2 table, 3 inner flange, 5 outer frame, 6 outer flange, 7 chute, 10 stacking surface, 11 scraper, 12 guide section, 23 fixing bolt, 25 sliding contact section, 27 scraper, 30 pin, 72 Driving mechanism, 73 side rollers,

Claims (2)

An annular loading surface is formed between the inner flange and the outer flange of the table, the inner flange is provided on the table and rotates integrally, and the outer flange is separate from the table, and a chute is provided on one side thereof. The scrap on the loading surface is guided to the chute by a scraper installed in a cantilever with the base end attached to the outer flange or chute and the tip in contact with the inner flange, and the table is In a table feeder in a bulk transport facility in which radial movement is restricted by a plurality of side rollers in contact with the outer peripheral surface;
The scraper includes a guide portion whose base end is fixed to the outer flange or chute so as not to rotate and obliquely crosses the loading surface, and a sliding contact portion which is rotatably connected to the tip and contacts the inner flange. A table feeder characterized by comprising: The said table is annular | circular shaped, and the said inner flange is provided in the inner periphery, and it has mounted horizontally on the wheel of several drive mechanisms consisting of the motor | power_engine and wheel arrange | positioned on the circumference. Table feeder in bulk transport equipment.

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