JPH0728133U - Bucket elevator type continuous unloader table feeder - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a table feeder for a bucket elevator type continuous unloader capable of suppressing wear of a turntable liner and greatly reducing the frequency of liner replacement work. [Structure] A large number of buckets 19 are connected to an endless chain 20.
A rotatable turntable 22 onto which the loose material 7 scraped off by a bucket elevator 8 mounted on the turntable 22 is dropped via a receiving chute 21;
The scraper 23 that scrapes the loose material 7 dropped onto the delivery chute 24 onto the boom conveyor 9
And a scraper elevating device 44 for adjusting the height of the scraper 23. With the scraper elevating device 44 lifting the scraper 23 from the liner on the turntable 22 by a required amount, the loose object 7 is discharged. To do.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a table feeder for a bucket elevator type continuous unloader.

[0002]

[Prior art]

 In recent years, a bucket elevator type continuous unloader has been adopted as a cargo handling machine instead of the grabbed unloader. The bucket elevator type continuous unloader is generally laid on the quay 1 as shown in FIG. A swing frame 5 provided with a tiltable boom 4 is provided on a traveling frame 3 capable of traveling on a rail 2, and a scrap 7 such as iron ore or coal in a hold 6 is scratched at the tip of the boom 4. The bucket elevator 8 that can be picked up and delivered to the table feeder 13 is hung through the top frame 14, and the loose material 7 scraped by the bucket elevator 8 is hung in the boom 4 through the table feeder 13. A boom conveyor 9 that can convey from the front end side to the base end side is provided, and the boom frame 9 is attached to the traveling frame 3 from the boom conveyor 9. It has become by disposing constituting the loose material 7 can output transportable to travel frame 3 out of the discharge conveyor 10 fed through the over bets 11.

The bucket elevator 8 suspends an elevator casing 12 extending in a vertical direction on a top frame 14 pivotally attached to the tip of the boom 4 so that the elevator casing 12 can horizontally swivel, and scrapes the lower end portion of the elevator casing 12 by scraping. The take-up frame 15 is mounted substantially horizontally, the sprockets 16 and 17 are attached to the base end and the tip of the scraping frame 15, and a large number of the sprockets 18 are provided on both the sprockets 16 and 17 and the elevator casing 12. It has a structure in which an endless chain 20 to which a bucket 19 for scraping loose bulk is attached is wound.

Further, as shown in FIGS. 7 to 10, the table feeder 13 integrally connects a receiving chute 21 into which the loose material 7 scraped by the bucket 19 is inserted to the elevator casing 12, On the top frame 14, a donut-shaped turntable 22 for receiving the loose material 7 thrown into the receiving chute 21 is rotatably arranged, and a scraper 23 for scraping off the loose material 7 on the turntable 22; A delivery chute 24 for guiding the loose material 7 scraped off by the scraper 23 onto the boom conveyor 9 is provided.

Rack pins 25 are attached to the inner peripheral surface of the turntable 22 over the entire circumference, and a pinion 27, which is rotationally driven by a motor 26 attached to the elevator casing 12, is engaged with the rack pins 25. A ring-shaped rail 28 is attached to the bottom surface of the turntable 22, and by rotating the pinion 27 by the motor 26, the rail 28 is supported by a supporting roller 29 disposed on the flat surface portion of the top frame 14. The turntable 22 is rotated at a predetermined speed while being supported by the side roller 30 and being restricted from being displaced in the radial direction by the side roller 30.

An endless seal belt 31 is wound around the outer circumference of the turntable 22, and the seal belt 31 is made to follow the rotation of the turntable 22, so that the outer circumference of the turntable 22 of the loose object 7 is extended. Of the plurality of pulleys 32, 33, 34 and 35, the seal belt 31 is wound around the plurality of pulleys 32, 33, 34 and 35 to bypass the seal belt 31 at the position where the scraper 23 is disposed. Therefore, the interference with the scraper 23 is avoided.

A table cover 36 integrally connected to the lower opening of the receiving chute 21 is slidably attached to the upper opening of the turntable 22 via a seal member 37 with respect to the rotation of the turntable 22. In order to prevent the loose material 7 from jumping out of the turntable 22 and the dust from leaking out.

In the figure, 38 is a swivel ring for rotatably supporting the elevator casing 12 of the bucket elevator 8 with respect to the top frame 14, 39 is an inner race fixed to the top frame 14 side of the swivel ring 38, 40 Is an outer race fixed to the elevator casing 12 side of the swivel ring 38, and an rack swing gear 41 is engraved on the inner peripheral surface of the inner race 39 of the swivel ring 38. The pinion 42 is engaged with the rack gear 41, and the pinion 42 is rotationally driven by the elevator turning drive device, whereby the elevator casing 12 can be turned appropriately with respect to the top frame 14.

Reference numeral 43 in the drawing denotes a liner attached to the upper surface of the turntable 22.

In the bucket elevator type continuous unloader, the bulk material 7 in the hold 6 is scraped off by the bucket 19 of the bucket elevator 8 and dropped from the receiving chute 21 onto the turntable 22 of the table feeder 13. .

The turntable 22 of the table feeder 13 is constantly rotating at a predetermined speed by the rotational drive of the pinion 27 by the motor 26 during operation of the unloader, and the thrown loose objects 7 are turned on by the turntable 22. Is rotated to move to the scraper 23 side, scraped by the discharge chute 24 by the scraper 23 arranged so as to contact the liner 43 on the turntable 22, and is dropped onto the boom conveyor 9 and then the boom conveyor 9. It is conveyed from the front end side to the base end side of the boom 4 by 9 and falls onto the carry-out conveyor 10 via the suit 11 and is carried out of the running frame 3 by the carry-out conveyor 10.

[0012]

[Problems to be solved by the device]

 However, if the scrap 7 is arranged so as to contact the liner 43 on the turntable 22 to scrape off the loose material 7 onto the delivery chute 24 as described above, the liner 43 will be worn out more frequently and the liner 43 will be frequently replaced. It had the problem of having to do it.

In view of such circumstances, the present invention intends to provide a table feeder for a bucket elevator type continuous unloader capable of suppressing the wear of the turntable liner and greatly reducing the frequency of the liner replacement work. It is a thing.

[0014]

[Means for Solving the Problems]

 The present invention has a rotatable turntable in which loose material scraped by a bucket elevator in which a large number of buckets are attached to an endless chain is dropped through a receiving chute, and is dropped on the turntable. A table feeder for a bucket elevator continuous unloader characterized by comprising a scraper for scraping loose material onto a delivery chute and dropping it onto a boom conveyor, and a scraper lifting device for adjusting the height of the scraper. It is such a thing.

Further, it is effective to dispose an elastic member capable of absorbing upward movement of the scraper in the scraper lifting device.

[0016]

[Action]

 Therefore, while the scraper is lifted up from the liner on the turntable by the required amount by the scraper lifting device, the loose material scraped by the bucket of the bucket elevator is received on the turntable rotating at a predetermined speed. When it is dropped from the scraper, it is moved to the scraper side by the rotation of the turntable, and the scraper is held in a state of being lifted by the required amount from the liner on the turntable. Only the loose material located above the bottom surface of the scraper is scraped off by the delivery chute and dropped onto the boom conveyor, and the remaining loose material remains in the form of being spread on the turntable. The liner of the turntable will play a role as a liner. It is protection, not little wear.

Further, if the scraper lifting device is provided with an elastic member capable of absorbing upward movement of the scraper, the scrap is caught between the scraper and the turntable when scraping the scrap by the scraper. Even if it is applied, the elastic member is compressed and deforms, causing the scraper to escape upward, so there is no concern that excessive force will be applied to the scraper or a large load will act on the turntable, ensuring stable operation. Rolling continues.

[0018]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

1 to 5 show an embodiment of the present invention. In the drawings, the parts denoted by the same reference numerals as those in FIGS. 7 to 10 represent the same parts, and the basic structure is shown in FIG. 10 is similar to the conventional one, but the feature of this embodiment is that, as shown in FIGS. 1 to 5, a scraper lifting device 44 for adjusting the height of the scraper 23 is provided. There is a point.

The scraper raising / lowering device 44 is configured such that a lower large diameter portion 46 a of a support shaft 46 of the scraper 23 is slidable upward and downward via a bearing 47 on a support base 45 installed above the delivery chute 24. On the other hand, a cushion plate 48 is fitted to the upper small diameter portion 46b of the support shaft 46 of the scraper 23, and a screw jack 50 driven up and down by a lift motor 49 is mounted on the support base 45. Then, the connecting frame 51 is mounted between the screw jacks 50 so that the upper small diameter portion 46b of the support shaft 46 of the scraper 23 is loosely fitted in the hole 52 formed in the connecting frame 51 and The support shaft 46 of the scraper 23 is suspended from the connecting frame 51 by screwing the nut 53 onto the upper end of the small diameter portion 46b. It is supported so as to be lowered, and further, an elastic member 54 such as an air spring capable of absorbing upward movement of the scraper 23 is interposed between the connecting frame 51 and the cushion plate 48. ing.

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

As shown in FIG. 4, when the scraper 23 is brought into contact with the liner 43 on the turntable 22 and driven by the lifting motor 49 of the scraper lifting device 44 to drive the screw jack 50 upward, the connecting frame 51 The support shaft 46 is pulled up via the scraper 23, and the scraper 23 is held in a state of being lifted by a required amount from the liner 43 on the turntable 22.

In this state, the particles 7 scraped off by the bucket 19 of the bucket elevator 8 are dropped from the receiving chute 21 onto the turntable 22 which is constantly rotating at a predetermined speed by the rotation drive of the pinion 27 by the motor 26. Then, the thrown loose objects 7 move to the scraper 23 side by the rotation of the turntable 22 and are held by the scraper 23 held in a state of being lifted from the liner 43 on the turntable 22 by a required amount. Only the loose material 7 located above the lower surface of the scraper 23 is scraped off by the delivery chute 24 and dropped onto the boom conveyor 9, and the remaining loose material 7 is placed on the turntable 22 as shown in FIG. It remains in the form of being spread over.

As a result, the bulk material 7 itself serves as a liner, and the liner 43 of the turntable 22 is protected by the bulk material 7 and hardly wears.

Further, when the loose material 7 is caught between the scraper 23 and the turntable 22 when the scrap 7 is scraped off by the scraper 23, the elastic member 54 is compressed and deformed. By doing so, the scraper 23 escapes upward, so that stable operation can be continued without any excessive force being applied to the scraper 23 or a large load acting on the motor 26 that rotationally drives the turntable 22. .

When the type of the loose material 7 is changed, the screw motor 50 of the scraper lifting / lowering device 44 drives the screw jack 50 in the lowering direction to drive the connecting frame 51, the elastic member 54, and the cushion plate. The support shaft 46 is pushed down through the 48, the scraper 23 is once brought into contact with the liner 43 on the turntable 22, and all the loose material 7 remaining in the form of being spread on the turntable 22 is sent out by the scraper 23. After scraping off on 24 and dropping onto the boom conveyor 9, the scraper 23 is lifted up from the liner 43 on the turntable 22 by the required amount in the same manner as described above. All you have to do is pay out.

In this way, the wear of the liner 43 of the turntable 22 can be suppressed, the frequency of the replacement work of the liner 43 can be significantly reduced, and the loose object 7 can be caught. Further, it is possible to prevent a large load from being applied to the scraper 23 and the turntable 22, and it is possible to continue the operation stably.

The table feeder of the bucket elevator type continuous unloader of the present invention is not limited to the above-mentioned embodiment, and various modifications can be made without departing from the scope of the present invention. Is.

[0029]

[Effect of device]

 As described above, according to the table feeder of the bucket elevator type continuous unloader of the present invention, wear of the turntable liner can be suppressed, and the frequency of liner replacement work can be significantly reduced. By installing an elastic member that can absorb the upward movement of the scraper in the scraper lifting device, it is possible to prevent a large load from acting on the scraper and turntable even when the loose material is caught. Therefore, an excellent effect that the operation can be stably continued can be obtained.

[Brief description of drawings]

FIG. 1 is a side sectional view of an embodiment of the present invention.

FIG. 2 is a view taken along the line II-II of FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is an enlarged cross-sectional view of section IV in FIG.

5 is a sectional view taken along line VV of FIG.

FIG. 6 is an overall side view showing an example of a bucket elevator type continuous unloader.

FIG. 7 is a side sectional view of a conventional example.

FIG. 8 is a view on arrow VIII-VIII in FIG. 7.

9 is a sectional view taken along line IX-IX in FIG.

10 is a sectional view taken along line XX of FIG.

[Explanation of symbols]

 7 Bulk Items 8 Bucket Elevator 9 Boom Conveyor 12 Elevator Casing 13 Table Feeder 19 Bucket 20 Chain 21 Receiving Chute 22 Turntable 23 Scraper 24 Sending Chute 43 Liner 44 Scraper Lifting Device 54 Elastic Member

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hiromasa Matsuda 1-19-10 Mohri, Koto-ku, Tokyo Ishikawajima Harima Heavy Industries, Ltd. Koto office (72) Hiroaki Tabata 1-19-10 Mohri, Koto-ku, Tokyo No. Ishikawajima Harima Heavy Industries Co., Ltd.Koto Office

Claims (2)

[Scope of utility model registration request] 1. A rotatable turntable on which a loose object scraped by a bucket elevator having a large number of buckets attached to an endless chain is dropped through a receiving chute, and dropped on the turntable. A table feeder for a bucket elevator type continuous unloader, comprising a scraper for scraping loose material onto a delivery chute and dropping it onto a boom conveyor, and a scraper lifting device for adjusting the height of the scraper. 2. The table feeder for a bucket elevator type continuous unloader according to claim 1, wherein the scraper lifting device is provided with an elastic member capable of absorbing upward movement of the scraper.