JPH06100176A - Bucket elevator of continuous unloader - Google Patents

Abstract

PURPOSE:To efficiently rake bulk cargoes by surely holding the position of a bucket and provide a long service life of a chain without exerting excessive load on the chain over the full length of a frame of an expandable raking part. CONSTITUTION:A guide rail 25 which extends in the longitudinal direction and guides a guide roller 24 of a bucket 19 so as to be brought into contact with its outer side is arranged to the lower part of an inner frame 14 constituting a frame of an expandable raking part, and a guide rail 29 which extends in the longitudinal direction and guides the guide roller 24 of the bucket 19 so as to be brought into contact with its inner side is arranged to the lower part of an outer frame 14. This constitution allows the raking of bulk cargoes without exerting excessive load on a chain 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bucket elevator for a continuous unloader.

[0002]

2. Description of the Related Art In recent years, a continuous unloader has been adopted as a cargo handling machine instead of a grabbed unloader, and the continuous unloader is generally a rail laid on a quay 1 as shown in FIG. 2, a swing frame 5 having a tiltable boom 4 is provided on a traveling frame 3 that can travel on the top of the traveling frame 3.
The bucket elevator 8 that can be carried out to the outside of the hold 6 is hung, and at the same time, the boom conveyor 9 that can convey the loose material 7 scraped by the bucket elevator 8 to the base end side of the boom 4 is suspended in the boom 4. The moving frame 3 is provided with a carrying-out conveyor 10 capable of carrying out the loose material 7 fed from the boom conveyor 9 through the chute 11 to the outside of the running frame 3. There is.

In the continuous unloader, the cargo hold 6
The loose material 7 in the inside is scraped off by the bucket elevator 8 and loaded outside the hold 6, and is conveyed from the tip end side of the boom 4 to the base end side by the boom conveyor 9 and the chute 1
1 is dropped onto the carry-out conveyor 10 and is carried out of the traveling frame 3 by the carry-out conveyor 10.

On the other hand, the bucket elevator 8 is shown in FIG.
As shown in FIGS. 4 to 4, at the lower end of the vertically extending main body frame 12 pivotally attached to the tip of the boom 4, an inner frame frame 14 is extendable and retractable so as to be nested with respect to an outer frame frame 13 having an open end surface. The outer frame 13 of the scraping part frame 15 disposed on the
Through the sprocket 16, 17 at the base end of the outer frame 13 and the tip of the inner frame 14, and the sprocket 16, 17 and the sprocket 18 provided on the main body frame 12 It has a structure in which an endless chain 20 to which a bucket 19 for scraping off the bulk is attached is wound.

The expansion and contraction of the inner frame 14 with respect to the outer frame 13 is performed by the expansion and contraction operation of the cylinder 21, and the tension of the chain 20 changes as the inner frame 14 expands and contracts. In order to eliminate the
On the other hand, when the cylinder 21 extends and the inner frame 14 extends with respect to the outer frame 13 as shown by the solid line in FIG. The cylinder 21
The cylinder 22 extends in conjunction with the operation of the lifting frame 2
3, the outer frame 13 rises in the form of being drawn toward the main body frame 12 side, while the cylinder 21 contracts as shown by the phantom line in FIG. When contracting, the cylinder 2
The cylinder 22 contracts in conjunction with the operation of No. 1 and the outer frame 13 descends via the elevating frame 23 while being separated from the main body frame 12 side, so that the tension of the chain 20 is always kept constant. Has become.

Further, as shown in FIG. 4, a guide rail 25 extending in the longitudinal direction and capable of guiding the guide roller 24 on the upper surface of the bucket 19 is provided under the inner frame 14.
A guide rail 26 that can guide the chain 20 is provided below the outer frame 13.

In the bucket elevator 8 as described above, when the chain 20 is driven in a state where the inner frame 14 is extended with respect to the outer frame 13 in order to scrape the loose material 7 from the inner portion of the hold 6, the chain 20 is driven. The bucket 19 moves with the chain 20, and the bucket 19 that has passed through the sprocket 17 at the tip of the inner frame 14 scratches the loose object 7 with its guide roller 24 being guided by the guide rail 25 of the inner frame 14. After moving while picking up and passing through the portion of the inner frame 14, the guide roller 24 is freed, but the chain 20 is scraped while the chain 20 is guided by the guide rail 26 of the outer frame 13. While moving, it goes up through the sprocket 16 at the base end of the outer frame 13.

In the figure, 27 is a support roller rotatably arranged on the outer frame 13 to support the inner frame 14, 28 is rotatably arranged on the main body frame 12 to support the elevating frame 23. It is a support roller for

[0009]

However, in the case of the bucket elevator 8 of the continuous unloader as described above,
So-called side excavation method (side cutting), that is,
While the chain 20 is being driven, the whole bucket elevator 8 is moved in the lateral direction of the bucket 19 (the direction perpendicular to the paper surface in FIG. 2), so that the bulk material 7 is excavated. Will work,
When the bucket 19 passes through the portion of the inner frame frame 14, the guide rollers 24 travel along the guide rails 25 of the inner frame frame 14, so that the bucket 19 is stably held while maintaining its posture. However, although the bulk material 7 can be scraped efficiently, when the bucket 19 passes through the portion of the outer frame frame 13 after passing through the portion of the inner frame frame 14, along the guide rail 26 of the outer frame frame 13. The chain 20 moves to move the guide roller 2
Since No. 4 is free, it is necessary to apply a tension more than the tension required for scraping the bulk material 7 to the chain 20 in order to hold the posture of the bucket 19 and efficiently scrape the bulk material 7. As a result, there is a problem that a heavy load is applied to the chain 20 and the wear of the chain 20 is increased, which shortens the life of the chain 20.

In view of such a situation, the present invention reliably holds the posture of the bucket and efficiently scratches the loose parts without applying an excessive load to the chain over the entire length of the retractable scraping section frame. It is intended to provide a bucket elevator of a continuous unloader which can be taken out and can prolong the life of the chain.

[0011]

SUMMARY OF THE INVENTION According to the present invention, an inner frame is telescopically arranged so as to be telescopic with respect to an outer frame to form a scraping part frame, and the outer frame of the scraping part frame is formed. One of the frame and the inner frame is attached to the lower end of the main body frame extending in the vertical direction so as to be vertically movable and substantially horizontally, and the base end of the one frame and the tip of the other frame described above. A bucket elevator for a continuous unloader, in which a sprocket is attached to both of the sprocket and the sprocket provided on the upper part of the main body frame, and an endless chain having a large number of buckets for scraping loose material is wound A guide rail that extends in the longitudinal direction of the inner frame and guides the bucket guide roller so as to contact the outside. While disposed at the bottom of the outer frame frame, it is characterized in that it has provided a guide rail for guiding in the form of contact a guide roller and the bucket extend in the longitudinal direction on the inside.

[0012]

Therefore, in order to scrape the bulky material from the inner part of the cargo hold, one of the outer frame and the inner frame of the scraping part frame is extended to the other frame. When the entire bucket elevator is moved in the lateral direction of the bucket while driving the chain, the bucket moves together with the chain, and the bucket that has passed through the sprocket at the tip of the inner frame has its guide roller outside the guide rail of the inner frame. The scraper moves while scraping off the bulk while being guided in contact with the guide rail, and after the bucket has passed the inner frame part, the guide roller is guided in contact with the inside of the guide rail of the outer frame. In this state, it moves while scraping the loose material, and goes up through the sprocket at the base end of the outer frame.

As a result, even when a large lateral force is applied to the bucket during excavation of the bulk material, when the bucket is passing through the inner frame portion, the guide roller is guided along the guide rail of the inner frame frame. When the bucket travels through the outer frame, the guide rollers travel along the guide rails of the outer frame, so that the bucket moves stably while its posture is reliably maintained. However, it is possible to efficiently scrape the loose material, and at this time, it is not necessary to apply a tension higher than the tension required for scraping the loose material to the chain. Significantly reduced, chain life is extended.

[0014]

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

FIG. 1 shows an embodiment of the present invention.
2 to 4 represent the same parts, and the basic configuration is the same as the conventional one shown in FIGS. 2 to 4, but the feature of this embodiment is that As shown in FIG. 1, a guide rail 25, which extends in the longitudinal direction of the inner frame 14 and is guided so that the guide rollers 24 of the bucket 19 are in contact with the outside, is arranged at the lower part of the inner frame 14, and at the bottom of the outer frame 13. In addition, a guide rail 29 is provided which extends in the longitudinal direction and is guided so that the guide roller 24 of the bucket 19 is in contact with the inside.

With the above-described structure, the chain 2 is extended with the inner frame 14 extended with respect to the outer frame 13 in order to scrape the loose material 7 from the inner portion of the hold 6.
While driving 0, the entire bucket elevator 8 is bucket 1
9 is moved in the lateral direction (direction perpendicular to the paper surface in FIG. 2), the bucket 19 moves together with the chain 20, and the bucket 19 which has passed through the sprocket 17 at the tip of the inner frame 14 has its guide roller 24 inside. Frame frame 14
After moving the scrap 7 while scraping the loose material 7 in a state of being guided in contact with the outer side of the guide rail 25, the guide roller 24 moves the guide roller 24 to the guide rail 29 of the outer frame 13. While being guided so as to be in contact with the inner side of the, the loose object 7 is moved while being scraped, and then the loose object 7 is moved up through the sprocket 16 at the base end of the outer frame 13.

As a result, even when a large lateral force is applied to the bucket 19 during excavation of the bulk material 7, when the bucket 19 is passing through the portion of the inner frame 14, the guide rails of the inner frame 14 are guided. 25, the guide roller 24 travels along the guide rails 29 of the outer frame 13 when the bucket 19 passes through the outer frame 13. Keeps its posture securely and moves stably to scrape the loose material 7 efficiently. Moreover, at this time, a tension higher than the tension required for scraping the loose material 7 is applied to the chain 20. There is no need to add it, a large load is not applied to the chain 20, the wear of the chain 20 is greatly reduced, and the life of the chain 20 is extended.

Thus, the posture of the bucket 19 can be reliably maintained and scraps can be scraped efficiently without applying an excessive load to the chain 20 over the entire length of the retractable scraping part frame 15. Therefore, the life of the chain 20 can be extended.

The bucket elevator of the continuous unloader of the present invention is not limited to the above-mentioned embodiment, but an inner frame is provided at the lower end of the main frame instead of the outer frame, and the inner frame is On the other hand, it goes without saying that various modifications can be made within the range not departing from the gist of the present invention, such as making the outer frame expandable.

[0020]

As described above, according to the bucket elevator of the continuous unloader of the present invention, the attitude of the bucket can be adjusted without exerting an excessive load on the chain over the entire length of the retractable scraping frame. It is possible to achieve an excellent effect that the dust can be surely held and scraps can be efficiently scraped, and the life of the chain can be extended.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of an embodiment of the present invention (IV- in FIG.
FIG. 4 is a view corresponding to a section IV)

FIG. 2 is an overall side view showing an example of a conventional continuous unloader.

FIG. 3 is a detailed view of a part III in FIG.

4 is a sectional view taken along the line IV-IV in FIG.

[Explanation of symbols]

 7 Bulk Objects 8 Bucket Elevator 12 Main Frame 13 Outer Frame 14 Inner Frame 15 Scraping Frame 16 Sprocket 17 Sprocket 18 Sprocket 19 Bucket 20 Chain 24 Guide Roller 25 Guide Rail 29 Guide Rail

Claims (1)

[Claims] 1. A scraping part frame is formed by arranging an inner frame frame so as to be telescopic with respect to the outer frame frame to form a scraping part frame, and the scraping part frame has an outer frame and an inner frame frame. One of the frames is attached to a lower end portion of a main body frame extending in the vertical direction so as to be movable in the vertical direction and substantially horizontally, and a sprocket is attached to the base end of the one frame and the tip of the other frame. And a sprocket provided on the upper part of the main body frame, which is a bucket elevator of a continuous unloader in which a large number of buckets for scraping loose particles are wound around an endless chain. A guide rail that extends in the longitudinal direction and guides the guide roller of the bucket in contact with the outside, and the outer frame A bucket elevator for a continuous unloader, characterized in that a guide rail that extends in the longitudinal direction of the frame and guides the guide rollers of the bucket so as to be in contact with the inside is disposed at the bottom of the frame.