JPH0733178B2 - Unloader scraping device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an unloader scraping device, and more particularly to an unloader scraping device having improved scraping performance for a transported object having poor fluidity. Is.

[Prior Art] Conventionally, as an underer scraping device, those shown in FIGS. 10 and 11 are known.

As shown in the figure, a conveyor belt b having lateral ridges a ... Is arranged in the vertical direction over the entire length, and a seal belt c is arranged along the conveyor belt b. The transfer belt d and the seal belt c form a transfer path d. The transported object e is scooped between the two adjacent horizontal rods a, a of the transport belt b, is sealed by the seal belt c, and is transported upward in the transport path d.

A scraping device g is provided at the carry-in end f which is the lower end of the transfer path d. This scraping device g is mainly provided with the carry-in end f.
And an impeller h for feeding the conveyed object e to the transfer path d, and screw blades i that are continuously provided on both sides of the impeller h and scrape the surrounding conveyed object e to the impeller h. , j and. Incidentally, k is a casing that supports the impeller h and the screw blades i and j. Since the casing k pivotally supports both ends l and m of the screw blades i and j, it covers the both ends l and m and the impeller h.

[Problems to be Solved by the Invention] However, in the scraping device g having the above structure, since both ends l and m of the screw blades i and j are covered with the casing k, both ends l and m are close. The object e to be conveyed cannot be scraped directly by the screw blades i and j.

When the transported object e is a loose material having poor fluidity (hereinafter referred to as “flow-prone”), the transported object e near both ends l and m of the screw blades i and j and near the impeller h are both ends l thereof. , m and the impeller h for the casing k, the screw blades i, j
Difficult to flow into. Therefore, as shown in FIG. 11 and FIG. 12, ridge lines o and p are formed near the both ends l and m and the impeller h, and the scraping amount of the transported object e by the scraping device g is significantly reduced. There was a problem of doing.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an unloader scraping device having a significantly improved scraping performance for a difficult-to-flow transported object.

[Means for Solving the Problems] In order to solve the above problems, the present invention has a transfer path for ascending and transferring a conveyed object such as a bulk object, and opens the transfer path so as to cover the carry-in end of the transfer path. An unloader that coaxially supports an impeller for introducing the object to be conveyed to the carry-in end and screw blades disposed on both sides of the impeller for scraping the object to the impeller in the casing. In the scraping device, the shaft end of the screw blade is extended in the axial direction to extend to the outside of the casing, and the extension portion scrapes the non-flowable object outside the casing to the screw blade side. A side screw formed to have a smaller diameter than the screw blade to be broken is spline-fitted and detachably attached.

[Operation] If the transported object is a non-flowable bulk material, the scraping means is attached to the screw blade to perform scraping work.

The scraping device scrapes the transported object around the scraping device with a screw blade and sends the scraped object to the impeller to move the transfer path upward. At the same time, the scraping means scrapes the transported object near the axial end edge of the screw blade, which cannot be scraped by the screw blade, and sends it to the screw blade.

[Embodiment] An embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 4, in the arm portion 2 of the unloader 1, a conveyor belt 3 provided with horizontal ridges 8 ... (See FIG. 5) at equal intervals over the entire length, and a seal belt 4 are arranged. The transport belt 5 is formed by the transport belt 3 and the seal belt 4. Then, the transported object 7 such as a loose object in the hold 6 is
The carrier belt 3 is picked up between the two adjacent horizontal ledges 8 and is sealed by the seal belt 4, and is transferred upward in the transfer path 5.

The carrying-in end 11 (the fifth end of the transfer path 5 which is the tip of the arm portion 2)
(See the drawing), the scraping device 12 of the present invention is provided.
The scraping device 12 is configured as shown in FIGS. 5 and 6. An impeller 14 for sending the transported object 7 to the carry-in end 11 of the transfer path 5.
Is provided so as to face the carry-in end 11. This impeller 4
On both sides of the rotation axis of the
Screw blades 15 and 16 for sending to the impeller 14 are provided. The scraping device 12 including the impeller 14 and the screw blades 15 and 16 is pivotally supported by the casing 18.
It is adapted to be driven by a drive motor 19. On the outside of the casing 18, side screws 21 and 22 are provided as the scraping means of the present invention continuously from the screw blades 15 and 16.

The side screws 21, 22 are detachably provided on the rotary shafts 15a, 16a of the screw blades 15, 16. Specifically, as shown in FIG. 1 (in FIG. 1, only the side screw 22 is shown), the rotary shaft 16a of the screw blade 16 is
It is pivotally supported by the casing 18 via a bearing 25. Axis of rotation
A sprocket for rotating the shaft 16a by the drive motor 19 is provided at a portion of the 16a located inside the casing 18.
26 is installed. Lubricating oil 27 for lubricating the sprocket 26 is stored in the lower portion of the casing 18. Between the casing 18 and the rotating shaft 16a, the lubricating oil 2
Seals 29 and 30 are provided to prevent the outflow of 7 to the outside of the casing 18 and the inflow of the transported object 7 and the like into the casing 18. Incidentally, 31 is a grease supply port for supplying grease to the seal 30.

A spline is formed in a portion 33 of the rotary shaft 16a extending outside the casing 18 (hereinafter referred to as an extending portion) 33. Then, the side screw 22 is attached to the extending portion 33. The side screw 22 includes a screw blade portion 34 for scraping down the transported object 7 and the blade portion.
34 and a screw boss 35 that is integrally formed with and supports the screw boss 35. Boss hole 35 of this screw boss 35
A spline (not shown) that engages with the spline of the extension 33 is formed on the inner periphery of a, and the side screw 22 is fixed to the extension 33 by the engagement of this spline.

When the side screw 22 is attached to the extension portion 33, the screw boss 35 is attached to the extension portion 33 and fixed by the screw boss fixing end plate 40. Then, the blind plate 42 is attached to the screw boss 35 so that the transported object 7 or the like does not enter therein.

The side screw 22 is attached to the rotary shaft 16 of the screw blade 16 described above.
If it is not attached to a, attach the cap 45 shown in Fig. 3,
As shown in FIG. 2, the rotary shaft 16a is attached so as to cover the extending portion 33 and protects the extending portion 33.

The structure of the side screw 21 is the same as that of the side screw 22.

Next, the operation will be described.

When the transported object 7 is a loose article having good fluidity, a cap 45 is attached to the extending portion 33 of the screw blades 15 and 16,
Only the screw blades 15 and 16 scrape the transported object 7 and send it to the impeller 14.

When the transported object 7 is a non-flowable bulk material, the side screws 21 and 22 are attached to the extending portions 33 of the screw blades 15 and 16. The screw blades 15 and 16 scrape the transported object 7 around it, and the screw blades 15 and 16 cannot scrape the transported object 7 around both sides of the screw blades 15 and 16 because they are blocked by the casing 18. Is scraped by the side screws 21 and 22 and sent to the screw blades 15 and 16. Then, the screw blades 15 and 16 send the transported object 7 to the impeller 14. Next, the transported object 7 is transferred to the transfer path 5 by the impeller 14.
The carrier belt 3 and the seal belt 4 move the transfer path 5 upward, and the ship 6 is unloaded.

As described above, the side screws 21 and 22 scrape the transported object 7 around the side screws 21 and 22 and send it to the screw blades 15 and 16, as shown in FIG. As a result, the transported object 7 in the vicinity of the side screws 21, 22 is scraped as shown in FIG. 8, and the scraping amount of the scraping device 12 is greatly improved.

Further, since the side screws 21, 22 are formed to have a smaller diameter than the screw blades 15, 16, it is possible to reduce the resistance given to the side screws 21, 22 when the transported object 7 is scraped. Therefore, the scraping can be performed smoothly, and the cargo handling efficiency of the to-be-transported object 7 can be improved. Furthermore, since the side screws 21 and 22 are spline-fitted to the extending portion 33 extending to the outside of the casing 18 and are detachably attached, the casing 18 is sandwiched in between to match the twist of the screw blades 15 and 16. Side screw 2
When matching the twists of 1,22 to form a substantially continuous twist, by simply inserting the side screws 21,22 into the extension 33 in accordance with the twist of the screw blades 15,16, the screw blades 15,16 It is possible to position the side screws 21 and 22 with respect to the twist of the, and the side screws 21 and 22 can be easily positioned.

[Effects of the Invention] In summary, according to the present invention, the following effects are exhibited.

(1) Since the side screw is formed to have a smaller diameter than the screw blade, the resistance applied to the side screw when the conveyed object is scraped can be reduced, the scraping can be performed smoothly, and the flow-resistant object The cargo handling efficiency can be improved.

(2) Since the side screw is spline-fitted to the extension part extended to the outside of the casing and is detachably attached, the side screw is twisted in accordance with the twist of the screw blade to form a substantially continuous twist. When forming, the side screw can be easily positioned with respect to the twist of the screw blade.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a state in which a side screw according to the present invention is connected to a screw blade of a scraping device, and FIG. 2 is a side sectional view showing a state in which the side screw is removed in FIG. FIG. 4 is a perspective view showing a cap that protects the extension of the rotary shaft of the screw blade, FIG. 4 is a view showing an unloader according to the present invention, and FIG. 5 is a schematic side view showing a scraping device according to the present invention. 6 is a schematic front view of FIG. 5, FIG. 7 is a view showing a scraped state of a conveyed object by the scraping device of the present invention, FIG. 8 is a sectional view taken along the line VIII-VIII of FIG. 7, FIG. 9 is a schematic side view showing a conventional scraping device, FIG. 10 is a schematic front view of FIG. 9, and FIG. 11 is a diagram showing a scraped state of an object to be conveyed by the conventional scraping device. The drawing is a sectional view taken along the line BB or CC of FIG. In the figure, 5 is a transfer path, 7 is an object to be conveyed, 11 is a loading end, 14 is an impeller, 15 and 16 are screw blades, and 21 and 22 are side screws.

Claims (1)

[Claims] 1. A blade having a transfer path for lifting and transferring an object to be transferred such as a bulk object, and a blade for introducing the object to be transferred to the carry-in end in a casing opened so as to cover the carry-in end of the transfer path. In an unloader scraping device that coaxially supports a wheel and screw blades arranged on both sides of the impeller for scraping the object to be conveyed to the impeller, the shaft end of the screw blade is arranged in the axial direction. The extension is extended to the outside of the casing, and a side screw formed to have a diameter smaller than that of the screw blade is spline-fitted to the extended portion in order to scrape the difficult-to-flow transported object outside the casing to the screw blade side. An unloader scraping device, which is detachably attached.