JPH11292296A - Table feeder for unloading unloader - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate work of installing a driving means and reduce noises during driving in rotation by engaging a roller connector which is concentric with a turntable and installed along the circumferential direction and a driving sprocket provided on the boom side with the turntable surrounding a bucket elevator. SOLUTION: On the lower side of a turntable 3, a roller connector 9 is installed through a fitting bracket 18 and a bolt on the radial outside of a ring-like bracket 21 which is concentric with the turntable 3 and extended downward. On the radial outside of the roller connector 9, a driving sprocket 11 engaged therewith is provided on the boom side through a motor 22 and a speed reducer 23. The lower surface of the turntable 3 is provided with a ring-like driving rail 24 concentric with the turntable 3, and a support roller 25 abutting against the lower end surface of the lower side thereof and a side roller 26 abutting against the radial inside surface are arranged in three places in such a manner as to offset from each other by equal pitches in the circumferential direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an unloader discharge table feeder for discharging loads from a bucket elevator onto a boom conveyor.

[0002]

2. Description of the Related Art Unloaders for unloading coal, iron ore, etc.
As shown in FIG. 4, rails 41 provided along the wharf
A boom conveyer 45 is formed on a boom 44 that is rotatably provided on a bogie main body 43 that travels above. At the tip of the boom 44, a bucket elevator 46 is formed to extend downward and scrape a load from a lower hold, and convey it onto a boom conveyor 45 via a table feeder 51. The bucket elevator 46 is rotatable around its axis. It is provided in.

In this bucket elevator 46, sprockets 47 (only the lower part is shown) are arranged on the upper and lower parts, respectively. An endless chain 49 in which a plurality of buckets 48 are arranged is wound around these sprockets 47.
The bucket 4 is driven by the rotation of the sprocket.
8 moves together with the endless chain 49 to carry the load upward. The load conveyed upward is transferred to the boom conveyor 45 and conveyed to a predetermined discharge place (not shown).

A table feeder 51 for transferring a load from the bucket elevator 46 onto the boom conveyor 45 is provided near the upper end of the bucket elevator 46.

[0005] As shown in FIG.
Is provided with a turntable 52 that rotates around the bucket elevator 46 at the tip of the boom 44.
The turntable 52 rotates clockwise in the figure. A discharge end (not shown) of the bucket elevator 46 is disposed above the turntable 52, and the load dropped from the discharge end moves with the rotation of the turntable 52, and is moved by the scraper 53 to the discharge port 54. It is scraped out and paid out to the carry-in end of the boom conveyor 45 below it.

As shown in FIG. 6, a support roller 55 for supporting the load and a side roller 56 for regulating a horizontal position are provided below the turntable 52. In order to rotate the turntable 52, conventionally, a plurality of pins 58 that are annularly mounted at a predetermined pitch inside a cylindrical portion 57 provided inside the turntable 52 are used.
And a drive means provided inside thereof and a drive pinion 59 that meshes with the pin 58.

[0007]

In the above-described table feeder 51, the diameter of the pin 58 is large to secure the strength of the pin 58, and the distance between the adjacent pin 58 is long. As a result, the backlash generated between the pinion 59 and the pinion 59 increases, and the accuracy of the engagement between the pin 58 and the pinion 59 deteriorates, resulting in an increase in noise.

The pin 58 is attached to a bracket 61 provided on a cylindrical portion 57 inside the turntable 52. When the pin 58 is attached, the pin 58 is placed in a narrow space inside the turntable 52. The centering of the hole and the drilling of the bracket 61 must be performed individually, and the pins 58 must be attached, respectively, which makes the operation extremely difficult and requires a lot of processing cost and time. .

Therefore, the present invention has been devised in order to solve the above-mentioned conventional problems, and an object of the present invention is to provide an unloader dispenser capable of easily attaching a driving means and reducing noise during rotational driving. To provide a table feeder.

[0010]

In order to solve the above-mentioned problems,
The present invention relates to a table feeder for discharging a load from a bucket elevator rotatably provided at the tip of a boom provided with a boom conveyor onto the boom conveyor,
At the tip of the boom, a turntable is provided which surrounds the bucket elevator and rotates with the load placed thereon,
A link of equal pitch is connected by a pin and a roller connecting band formed by providing a roller on the pin is formed. This roller connecting band is attached concentrically with the turntable along the circumferential direction thereof, and a roller is connected to the boom side. A drive sprocket that meshes with the band is provided.

According to this, the pre-assembled roller connecting band is attached to the turntable and rotated by the sprocket, so that the distance between adjacent pins is predetermined, and it is necessary to perform centering work. Not
Pins are precisely arranged at a fine pitch. Therefore, the meshing accuracy between the roller connecting band and the sprocket is improved, and noise can be reduced. Also, the mounting work of the driving means,
Since the integrated roller connecting band may be attached to the turntable, it becomes easier than before.

The link is preferably provided with a bracket for attaching to a turntable.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a sectional view of an essential part showing an embodiment of an unloader discharging table feeder according to the present invention, FIG. 2 is a plan view and a front view showing a roller connecting band, and FIG. 3 is an unloader according to the present invention. It is the top view which showed the embodiment of the payout table feeder.

As shown in FIGS. 1 and 3, a table feeder 1 according to the present invention includes a bucket elevator 2 which is rotatably provided and scrapes a load from below to convey it onto a boom conveyor (not shown). In the vicinity of the discharge end, a ring-shaped turntable 3 that is rotatably supported surrounding the discharge end and receives a load discharged from the discharge end is provided.

On one side surface of the turntable 3, a discharge port 4 for discharging a load to the boom conveyor is formed. The outlet 4 is provided with a scraper 5 extending above the turntable 3. Also, payout port 4
A hopper (not shown) is provided at a lower portion of the boom conveyor and extends to a carry-in end of the boom conveyor. That is, the load carried out from the bucket elevator 2 onto the rotating turntable 3 is scraped out to the payout port 4 by the scraper 5,
Dispensed to the boom conveyor via the hopper.

A cylindrical portion 12 that rises upward from the inner end of the turntable 3 is provided radially inward of the turntable 3. A liner 14 is provided in a portion where the load inside the cylindrical portion 12 and the turntable 3 is placed. On the other hand, a cylindrical portion 15 that rises upward from the outer end is provided radially outside the turntable 3. The cylindrical portion 15 has a height substantially equal to that of the cylindrical portion 12,
The gap between the turntable 3 and the cylindrical portion 15 is a seal rubber 27.
It is sealed substantially all around. The cylindrical portion 15 is provided with a liner 28 equivalent to the liner 14. The cylindrical portion 15 is disposed so as to separate from the turntable 3 and surround the payout port 4 at the payout port 4. That is, the cylindrical portion 12, the turntable 3, and the cylindrical portion 15
This forms a load transport path.

A table cover 16 is provided above the cylindrical portions 12 and 15. The table cover 16 rotates in synchronization with the rotation of the bucket elevator 2. An opening (not shown) is formed at a position below the carry-out end of the bucket elevator 2, from which a load is sent into the table feeder 1.

In the present invention, a driving means for rotating the turntable 3 is improved.

The driving means includes a roller connecting band (see FIG. 2) 9 in which links 6 of equal pitch are connected by pins 7 and a roller 8 is provided on the pins 7, and a driving meshing with the roller connecting band 9. And a sprocket 11.

As shown in FIG. 2, links 6 are provided so as to connect both ends of adjacent pins 7 to each other.
Link 6 is an inner link 6 extending to one adjacent pin 7
a and an outer link 6b located outside the inner link 6a and extending to the other adjacent pin 7.
That is, two adjacent pins 7 are connected by an inner link 6a, a roller 8 is provided on the pin 7 to form a roller connecting body 17, and the adjacent roller connecting bodies 17 are connected by an outer link 6b to form a roller connecting band. 9 is formed. This roller connecting band 9 is formed endless.

The outer link 6b is provided with a mounting bracket 18 for mounting to the turntable 3. The mounting bracket 18 includes upper and lower outer links 6b.
And extends outward in the width direction of the roller connecting band 9. A bolt hole 19 is formed in the mounting bracket 18.

As shown in FIG. 1, a ring-shaped bracket 21 is provided below the turntable 3 so as to extend downward concentrically with the turntable 3. A mounting bracket 18 is in contact with the outer side of the ring-shaped bracket 21 in the radial direction, and the roller connecting band 9 is mounted via a bolt.

A drive sprocket 11 meshing with the roller connecting band 9 is provided radially outside the roller connecting band 9. The drive sprocket 11 is provided on the boom side, and is provided with a motor 22 and a speed reducer 23.

On the lower surface of the turntable 3, a ring-shaped drive rail 24 is provided concentrically with the turntable 3. The roundness of the drive rail 24 is improved as compared with the conventional one. A support roller 25 is provided below the drive rail 24 to abut and support the lower end surface thereof. The support rollers 25 are provided on the boom side and are arranged at three locations at equal pitch in the circumferential direction. Further, below the drive rail 24, there is provided a side roller 26 which abuts on a radially inner side surface thereof and regulates a horizontal position. The side rollers 26 are provided on the boom side, and are arranged at three positions at equal pitches in the circumferential direction offset from the support roller 25. These support rollers 25 and side rollers 26 are provided with higher precision than conventional ones, so that misalignment can be minimized.

Next, the operation of the present invention will be described.

When attaching the roller connecting band 9 to the turntable 3, first measure the length of the roller connecting band 9 formed in advance, then determine the diameter of the ring bracket 21, and attach the ring bracket 21. It is formed and attached to the lower surface of the turntable 3. Then, the roller connecting band 9 is arranged so as to surround the ring-shaped bracket 21 and is attached with a bolt. As described above, since the roller connecting band 9 pre-assembled and integrated is attached to the turntable 3, it is not necessary to attach each pin individually as in the related art, and the trouble of centering can be saved. In addition, the mounting work of the driving means becomes very easy, and the maintainability is improved.

Further, since the roller connecting band 9 is assembled not in a narrow space but in a wide external space, the pins are precisely arranged at a fine pitch. Further, since the roller connecting band 9 is rotated by the driving sprocket 11 and the accuracy of the driving rail 24, the supporting roller 25 and the side rollers 26 is improved, the backlash between the roller connecting band 9 and the driving sprocket 11 is reduced. In addition, the accuracy of the engagement is improved, and a reduction in noise during rotational driving can be achieved. Furthermore, the wear of the roller connecting band 9 and the driving sprocket 11 is reduced due to the improvement of the meshing accuracy, and a longer life can be achieved.

In the above embodiment, the driving means is mounted on the lower part of the turntable 3, but the mounting place is not limited to this. For example,
The roller connecting band 9 and the driving sprocket 11 may be provided inside the cylindrical portion 12. However, since the lower side of the turntable 3 can secure a wider space than the inside of the cylindrical portion 12, in terms of ease of mounting work,
The above embodiment is optimal.

In the above embodiment, the mounting bracket 18 is provided on the outer link 6b, but may be provided on the inner link 6a. Furthermore, the number of the mounting brackets 18 may be reduced as long as the roller connecting band 9 can be securely fixed to the turntable 3.

[0031]

In summary, according to the present invention, an excellent effect that the driving means can be easily attached and the noise at the time of rotational driving can be reduced can be exhibited.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part showing an embodiment of an unloader dispensing table feeder according to the present invention.

FIG. 2A is a plan view showing a roller connecting band, and FIG.
Is a front view.

FIG. 3 is a plan view showing an embodiment of an unloader dispensing table feeder according to the present invention.

FIG. 4 is a perspective view showing the entire configuration of the unloader.

FIG. 5 is a plan view showing a conventional table feeder.

FIG. 6 is a sectional view of a main part showing a conventional table feeder.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Table feeder 2 Bucket elevator 3 Turntable 6 Link 7 Pin 8 Roller 9 Roller connection band 11 Drive sprocket 18 Mounting bracket (bracket)

Claims (2)

[Claims] 1. A table feeder for discharging a load from a bucket elevator rotatably provided at a tip of a boom provided with a boom conveyor onto the boom conveyor, wherein the table elevator surrounds the bucket elevator at the tip of the boom. A turntable for loading and rotating is provided, and on the other hand, a roller connection band formed by connecting links of equal pitch by pins and providing rollers on the pins is formed, and the roller connection band is concentric with the turntable. An unloader dispensing table feeder, which is provided along a circumferential direction and has a drive sprocket on the boom side for meshing with a roller connecting band. 2. The unloader dispensing table feeder according to claim 1, wherein a bracket for attaching to the turntable is provided on the link.