JP3224671B2 - Unloader bucket chain elevator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an unloader bucket chain type elevator, and more particularly, to a single bulk carrier having two bulk carriers.
It is useful for providing a bucket chain type elevator of an unloader which is suitable for so-called two-port pick-up in which two ports are sequentially moved and unloaded at these two ports and the amount of bulk load in the bucket is adjustable. It is.

[0002]

2. Description of the Related Art FIG. 8 is a side view showing an L-shaped circulation digging portion of a conventional ordinary unloader bucket chain type elevator, and FIG. 9 is a second port loading / unloading operation of the bucket chain type elevator shown in FIG. FIG. 4 is an explanatory diagram showing a state at the time. FIG.
As shown in FIG. 1, the bucket type elevator 1 has a vertical column 1 'and an L-shaped circulation digging portion provided at the lower end of the vertical column 1'. , A bottom frame 3, a tip sprocket 4, a rear sprocket 5, a swing cylinder 8, a tilt cylinder 9, and a bucket chain line 6. The bucket chain line 6 includes a link chain 6a and the link chain 6a.
And a plurality of buckets 7 attached at predetermined intervals to each other. In addition, 11 in FIG.
Reference numeral 10 denotes a hold wall.

The oscillating frame 2 of the L-shaped circulation excavation section
The upper end is connected to the lower end of a vertical column 1 'supported by the end of a boom of an unloader (not shown), and the intermediate portion is connected to the front end of a swing cylinder 8 supported by the lower end of the vertical column 1'. The swinging cylinder 8 is swung about its upper end by expansion and contraction. The bottom frame 3 has a base end coupled to the lower end of the swing frame 2 and an intermediate portion coupled to a distal end of a tilt cylinder 9 supported on the lower end of the swing frame 2. Along with the swing frame 2, it has a substantially L-shape, and is tilted up and down around the base end by expansion and contraction of the tilt cylinder 9.

[0004] The front sprocket 4 and the rear sprocket 5 are rotatably supported on the front and rear ends of the bottom frame 3, respectively. The bucket chain line 6 is engaged with both sprockets 4 and 5 while the tip sprocket 4
To the rear sprocket 5 (arrow 12 in the figure)
(In the direction indicated by a circle)), and is circulated in a substantially L shape along both frames 3 and 2.

Therefore, according to the L-shaped circulation excavating section having the above structure, when the bucket chain line 6 circulates in the direction of arrow 12, the bucket 7 scrapes the bulk load 11 from the top to the bottom at the tip sprocket 4 and moves backward. (Toward the rear sprocket 5) and the rear sprocket 5
When the moving direction turns upward in the part, the pool of the bulk load 11 formed behind the rear sprocket 5 is used as a reaction force, the bulk load 11 is put into the inside, and the bulk load 11 is conveyed upward to discharge the bulk. . At this time, the bucket chain type elevator 1 moves in a direction perpendicular to the paper surface of FIG.

[0006]

However, in the bucket chain type elevator 1 of the unloader according to the prior art as described above, when the bucket 7 scrapes the bulk load 11, L
A force in the direction of arrow A acts on the circular circulation excavated portion, and this force causes the excavated portion to bend in the same direction. For this reason, the amount of the tip of the L-shaped circulation digging part into the bulk load 11 increases. In particular, when the bulk load 11 on the hold wall 10 side collapses, that is, when the bucket 7 exceeds the predetermined cutting depth of the bucket 7 and the bulk load 1
When the state of excavation (scraping) is obtained, the above-mentioned force is further strengthened.
1, causing a vicious cycle in which the amount of excavation further increases, resulting in endlessly increasing the deflection of the L-shaped circulation excavation section, and finally position control for cargo handling control of the bucket type elevator 1. Make it unstable and difficult.

[0007] Also, a plurality of types of bulk goods 11 having different specific gravities.
When the bulk load 11 having a high specific gravity is unloaded, the bucket 7 is fully loaded when the rear sprocket 5 turns upward and the bucket 7 is lifted as it is. Since the weight of the load 11 becomes too large and excessive tension is applied to the link chain 6a, it is necessary to control the filling rate of the bulk load 11 into the bucket 7, but such control is difficult and unstable. As a result, the cargo handling capacity per hour fluctuates greatly,
Stability cannot be maintained. Further, when the bucket 7 is loaded with a heap of bulk loads, the bucket 7 swings or impacts at the time of engagement with an upper sprocket (not shown) and the like, resulting in dropping of the load, such as lowering of the cargo handling efficiency and generation of dust. Failure occurs.

In the case of carrying out two-port pick-up, if the central portion of the bulk load 11 is greatly depressed as shown in FIG. Since the bulk load cannot be scooped, it is necessary to once break the bulk load 11 on the hold wall 10 side as shown in FIG. 9B and level the bulk load 11 as shown in FIG. 9C. Becomes
Loss time is correspondingly reduced and the unloading efficiency is reduced.

The present invention has been made in view of the above-mentioned prior art, and there is no danger that the deflection of the L-shaped circulation excavation section will be increased without limit, and the unloading operation can be efficiently performed even when the central portion of the bulk load is greatly depressed. It is another object of the present invention to provide a bucket-chain type elevator of an unloader, which can easily adjust a filling rate of a bulk load in a bucket.

[0010]

According to a first aspect of the present invention which achieves the above object, a bucket chain line comprising a link chain at a lower end thereof and a plurality of buckets fixed to the link chain is provided. In a bucket chain type elevator of an unloader having an L-shaped circulation digging portion configured to circulate in a substantially L-shape and scrape a bulk load, the bucket chain line is moved from a rear portion to a tip portion of the L-shaped circulation digging portion. And the link chain so that when the bucket is moved from the rear part to the tip part along with the circulating movement of the bucket chain line, the opening is directed toward the tip part. Attached to
The amount of the bulk load in the bucket is reduced by the falling of the bulk load from the bucket caused by the inclination when the inclined portion of the bucket chain line which inverts from the tip end of the L-shaped circulation excavation part and rises obliquely upward. In order to adjust, the bucket is adjusted to give a predetermined angle of repose to the bucket in the inclined portion.

[0011]

A second aspect of the present invention to achieve the above objects, in the first configuration, a receiving platform facing lower and side surfaces of the bucket when increasing the inclination of the bucket chain line A spilled load discharging device is provided.

According to a third aspect of the present invention, which achieves the above object, in the above-mentioned second aspect, the load receiving platform is provided such that the lower surface of the bucket and the surface of the load receiving platform facing the lower surface of the bucket have a small gap. It is characterized in that an opening capable of adjusting an opening degree is provided on the surface of the receiving table. In addition,
A fourth configuration of the present invention to be achieved is the same as the second configuration described above.
An opening in the surface of the loading table facing the lower surface of the bucket.
Is provided, a substantially U-shaped and hollow member having an upper portion and
The lower opening is open and the upper opening communicates with the opening of the cradle.
And the lower opening occupies the outside of the link chain
A discharge chute is provided.

According to a fifth aspect of the present invention, which achieves the above object, the first, second, third, or fourth aspect has the following features.
The bucket is configured such that the side edge protrudes from the bottom side edge at the opening side thereof, and the protruding portion defines the side edge.
Next to the bulk load as it falls from the bucket
It is characterized in that spillage is prevented .

[0015]

According to the first aspect of the present invention, the bucket circulates in the direction opposite to that of the conventional one and scoops the bulk load at the tip of the L-shaped circulating excavator. For this reason, a force in the direction from the tip to the rear acts on the L-shaped circulation digging portion due to the reaction force of the bulk load, and the L-shaped circulation digging portion is directed to the rear, that is, the tip portion faces the hold wall by this force. In this state, bending occurs in a direction away from the hold wall. As a result, the bulk load on the hold wall side collapses and covers the leading end of the L-shaped circulation excavation section, and even if a large force is applied to the bucket occupying the leading end, the bulk load applied to the bucket by the bucket may be large. Since the deflection acts in the direction of escaping from the vehicle, there is no danger that the deflection of the L-shaped circulation excavation part will increase endlessly, and therefore, the position control for the cargo handling control of the bucket chain type elevator will be unstable. Absent. Further, even when the central portion of the bulk load is greatly depressed, the unloading operation can be started immediately by merely causing the leading end of the L-shaped circulation excavating section to enter the bulk load on the upwardly inclined surface on the hold wall side.

[0016] According to the present invention having the above first configuration,
Even if a pile of heavily loaded bulk material enters the bucket at the tip of the L- shaped circulation excavation part, the excess bulk load falling over the angle of repose falls due to the inclination of the bucket when it rises up the slope of the bucket chain line. Is generated, and the filling rate of the bulk load in the bucket can be maintained at a predetermined value.

According to the second configuration of the present invention, the second configuration
In addition to the operation of the above configuration, the bulk load spilled from the bucket moving on the inclined portion of the bucket chain line is discharged from the lower end of the load receiving table to the front of the tip of the L-shaped circulation digging section, and the bulk load is discharged on the link chain. To prevent the link chain from circulating.

According to the third aspect of the present invention, the third configuration
In addition to the operation of the second configuration, by adjusting the opening degree of the opening of the load receiving table, it is possible to adjust the amount of the bulk load discharged from this opening and to adjust the filling amount of the bulk load in the bucket. According to the fourth configuration of the present invention, the bucket
Excess bulk material that has fallen from
Lower opening of discharge chute through upper opening of chute
From the outside of the link chain.

According to the present invention of the fifth configuration, the first
In addition to the operation of the first, second, third or fourth configuration, the side surfaces of the bucket prevent the bulk load from spilling when the bulk load falls from the bucket. This prevents bulk loads from spilling onto the link chain and hindering the circulating movement of the bucket chain, and makes it easy and reliable to adjust the amount of bulk loads discharged from the opening of the load receiving tray to fill the bulk in the bucket. Easy volume adjustment.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described in detail with reference to FIG. The same parts as those in the prior art are denoted by the same reference numerals, and redundant description will be omitted.

FIG. 1 is a side view showing an L-shaped circulation digging portion of a bucket chain type elevator of an unloader according to a first embodiment of the present invention. As shown in the figure, the bucket chain type elevator 21 has a vertical column 1 'and an L-shaped circulation digging portion provided at the lower end of the vertical column 1'. 2, a bottom chain 3, a front sprocket 4, a rear sprocket 5, a swing cylinder 8, a tilt cylinder 9, a link chain 6a, and a bucket chain line 26 constituted by a plurality of buckets 22.

In the bucket chain type elevator 21 according to the first embodiment, the bucket 22 is in the opposite direction to the conventional bucket 7 shown in FIG. The opening 22a is attached to the link chain 6a so that the opening 22a faces the direction of the tip sprocket 4 when moving horizontally between
The bucket chain line 26 is circulated in the direction opposite to the conventional bucket chain line 6 shown in FIG. 8, that is, in the direction from the rear sprocket 5 to the tip sprocket 4 as indicated by an arrow 23.

Accordingly, with the circulation movement of the bucket chain line 26, the bucket 22 moves horizontally from the rear sprocket 5 to the tip sprocket 4, and scoops the bulk load 11 from the bottom to the top at the tip sprocket 4.

The bucket chain line 6 has an inclined portion 26a which rises from the tip sprocket 4 at a predetermined gentle inclination angle.
And the bucket 2 inclined by the inclined portion 26a
From 2, the excess bulk load exceeding the given angle of repose among the bulk loads 11 in the bucket 22 falls naturally (see FIG. 5), and the filling rate set in the bucket 22 is approximately 10%.
It is configured to hold the bulk load 11 of about 0 to 110% and transport it upward.

Next, a second embodiment of the present invention will be described in detail with reference to FIGS. The same parts as those in the first embodiment are denoted by the same reference numerals, and redundant description will be omitted.

FIG. 2 is a side view showing an L-shaped circulation excavating portion of a bucket chain type elevator of an unloader according to a second embodiment of the present invention, FIG. 3 is an enlarged view of a main part of FIG. 2, and FIG. FIG. 5 is a cross-sectional view taken along line IV-IV of FIG. 3, FIG. 5 is a cross-sectional view taken along line VV of FIG. 4, and is an explanatory view showing a state in which a bulk load spills from a bucket. Perspective view, FIG.
FIG. 3 is an explanatory diagram showing a state of the bucket chain type elevator shown in FIG. 2 during a cargo handling operation at a second port.

As shown in FIG. 2, the bucket chain type elevator 21 'has a vertical column 1' and an L-shaped circulation digging portion provided at the lower end of the vertical column 1 '. The section has a swing chain 2, a bottom frame 3, a tip sprocket 4, a rear sprocket 5, a swing cylinder 8, a tilt cylinder 9, a link chain 6a, and a bucket chain line 26 'composed of a plurality of buckets 22'. are doing.

Of these, the bucket chain line 26 '
Has a configuration similar to that of the bucket chain line 26 except that a part of the configuration of the bucket 22 'is different from the bucket 22 of the bucket chain line 26 in the first embodiment (see FIG. 1). Circulates in the direction shown by the arrow and the inclined portion 26 of the bucket chain line 26.
has an inclined portion 26a 'corresponding to a.

The bucket 22 'is attached to the link chain 6a via a chain mounting portion 22a' as shown in FIG. 6, and the side plate 2 is provided at the opening 22a 'side.
2b 'is formed so that a protruding portion 22b "protrudes from the edge of the bottom plate 22c'. Like the bucket 22, this bucket 22 'also has an opening when it moves horizontally from the rear sprocket 5 toward the tip sprocket 4. 22 a ′ is attached to the link chain 6 a so as to face the tip sprocket 4.

As shown in FIGS. 3 and 4, the spilled load discharging device 24 has a load receiving table 25, a discharge chute 31, an opening adjusting plate 29, and an opening / closing cylinder 30. Receiving stand 25
Is constituted by an upper side receiving base 25a and a lower receiving base 25b which are separated from each other at a predetermined interval from each other, and the bucket 22 when one of the upper side receiving bases 25a rises the inclined portion 26a '. ′ Side plate 22b ′,
The other lower receiving tray 25b faces the bottom plate 22c 'of the bucket 22' when ascending the same inclined portion 26a ', and these are supported by two sets of support frames 27 so that the height can be adjusted. That is, the bottom plate 22c 'of the bucket 22' and the lower receiving tray 25b when ascending the inclined portion 26a '
Is adjusted so as to maintain a small gap with the upper surface 25b '. Therefore, the bucket 22 'holds the small gap and the inclined portion 2 so that the chain mounting portion 22d' passes through between the upper side receiving tray 25a and the lower receiving tray 25b.
6a '.

An opening 28 is provided at the center of the upper surface 25b 'of the lower receiving tray 25b. Opening adjustment plate 29
Is fixed to the end of an opening / closing cylinder 30 supported on the lower surface 25b ″ of the lower receiving tray 25b, and moves in the left-right direction in FIG. To adjust.

As shown in FIG. 4, the discharge chute 31 is a substantially U-shaped and hollow member, and has upper and lower openings (openings 31a, 31b, 31c). Further, the discharge chute 31 is configured such that the upper opening 31a is connected to the lower receiving tray 2.
5b and the lower openings 31b, 3
1c is supported by the support frame 27 so as to occupy the outside of the link chain 6a (left and right sides in FIG. 4).

Therefore, as shown in FIG. 5, the inclined portion 26a '
When the extra bulk load 11 'of the internal bulk load 11 that exceeds the angle of repose θ falls out of the rising bucket 22',
The excess bulk load 11 'that has fallen off is
It is discharged from the openings 31b and 31c to the outside of the link chain 6a through 1a. At this time, the discharge amount of the bulk load 11 is adjusted by adjusting the opening degree of the opening 29 by the opening adjusting plate 29.

As described above, according to the first and second embodiments, as shown in FIGS. 1 and 2, the L-shaped bucket chain type elevators 21, 21 'are operated by operating an unloader main body (not shown). The circulation excavation part is inserted into the hold and the bucket chain lines 26, 26 'are circulated in the direction of arrow 23, and the buckets 22, 22' occupying below the bottom frame 3 form the bulk load 11 in the hold. When the height of the L-shaped circulation excavation part is adjusted so that it sinks by a predetermined depth from the surface, the buckets 22 and 22 'scoop up the bulk load 11 from below at the tip sprocket 4 part. Unloading of the bulk load 11 is started.

Therefore, at this time, a force in the direction of arrow B is applied to the L-shaped circulation excavating portion of the bucket chain type elevators 21, 21 'by the reaction force of the bulk load 11, as shown in FIGS. Due to this force, the L-shaped circular excavating portion bends in a direction away from the hold wall 10 in a direction of arrow B, that is, in a state where its tip is directed toward the hold wall 10.
For this reason, for example, the bulk load 11 on the upward slope on the hold wall 10 side
Collapses and covers the tip of the L-shaped circulation excavation section, and even when a large force is applied to the buckets 22 and 22 'occupying the tip, the buckets 22 and 22' cover the tip. The bending acts in a direction away from the bulk load 11. Therefore, there is no possibility that the deflection of the L-shaped circulation excavating portion is increased endlessly unlike the conventional case, and the position control for the cargo handling control of the bucket chain type elevators 21 and 21 'can be performed stably and easily.

Also, at the time of unloading of the second port in two-port picking,
Even when the central portion of the bulk load 11 is greatly depressed, FIG.
(A) and (b) (only the bucket chain type elevator 21 'is shown as a representative), the tip of the L-shaped circulation excavation part in which the bucket chain lines 26 and 26' are circulating is moved to the hold wall 10 side. The unloading of the bulk load 11 can be started immediately simply by entering the bulk load 11 on the upwardly inclined surface and moving the bulk load 11 in a direction perpendicular to the paper surface of FIG. Therefore, the work of leveling the bulk load 11 as in the related art is not required, and there is no time loss for the work, and the unloading efficiency is improved.

At the time of unloading, the tip sprocket 4
Buckets 22 and 2 scooping up bulk goods 11 in the section
While the 2 'reaches the inclined portions 26a, 26a' and rises there, of the bulk loads 11 in the buckets 22, 22 ', the extra bulk 11' exceeding the specific angle of repose θ which differs depending on the specific gravity or the particle size. (See FIG. 5) falls off naturally. For this reason, the buckets 22 and 22 'can uniformly hold a bulk load of about 100 to 110% of the set fill rate and convey the bulk load upward. Therefore, the link chain 6a
Therefore, the apparatus can be reduced in weight correspondingly without excessive tension, and a stable cargo handling ability can be exhibited even when disturbance of the bulk load 11 due to collapse of the load or the like is applied. In the case of handling a plurality of bulk loads having different specific gravities, if the filling rate is set so as to leave 60 to 70% of bulk loads in the buckets 22 and 22 'when unloading bulk loads having a large specific gravity, the buckets 22 and 22' run out. And the likelihood of falling from the buckets 22 and 22 'due to impact or the like at the time of engagement with an upper sprocket (not shown).

Further, according to the second embodiment, as shown in FIG. 5, the excess bulk load 11 '(ore or the like) spilling from the bucket 22 rising on the inclined portion 26a' is transferred to the bucket chain through the load receiving stand 25. Since it is discharged to the outside of the link chain 6a, the bulk load 11 'may fall on the link chain 6a and be caught by the link chain 6a, causing a problem that prevents the link chain 6a from engaging with the tip sprocket 4. Absent.

Further, the opening of the opening 28 is adjusted by the opening adjusting plate 29, and the bucket 22 'at the inclined portion 26a' is provided to prevent the bulk load 11 from spilling from the bucket 22 'by the projecting portion 22b' of the side plate 22b '. The discharge amount of the bulk load 11 from the bucket 22 'is easily and reliably adjusted, and the adjustment of the filling volume of the bulk load 11 in the bucket 22' is easy. Therefore, it is possible to easily perform adjustment according to the type of the bulk load 11 such as restricting excess discharge of the bulk load 11 having a small specific gravity and being slippery.

Although the spilled load discharging device 24 of the second embodiment has the load receiving table 25 and the discharge chute 31, it may be simply the load receiving table 25. Further, in this case, the opening 28 may not be provided in the receiving table 25. When the opening 28 is provided, the extra bulk load 11 ′ is discharged downward from the opening 28, and when the opening 28 is not provided, the excess bulk load 11 ′ is formed between the load receiving table 25 and the bucket 22 ′ ( (Adjusted appropriately), and is discharged from the lower end of the loading tray 25 to the front of the tip of the L-shaped circulation excavation section (front of the front sprocket 4). Therefore, even in such a case, it is possible to prevent the extra bulk load 11 'spilled from the bucket 22' from falling onto the link chain 6a.

In the first embodiment, a bucket 22 'may be provided instead of the bucket 22. Also in this case, since the extra bulk load 11 'is prevented from spilling over by the protrusion 22b "of the side plate 22b', it is possible to prevent the excess bulk load 11 'from falling onto the link chain 6a. .

The configuration of the present invention is not limited to the one shown in the above embodiment. An unloader in which a bucket chain type elevator is provided in a lower half and a vertical conveyor is combined in an upper half, and a bottom frame 3 are provided. The same may be applied to an unloader or the like configured as a two-stage refraction type in the same manner as described above.
The shape of the bucket, the shape of the receiving table and the shape of the discharge chute, and the like can be appropriately changed in design and implemented.

[0043]

According to the present invention, as described above in detail with the embodiment, the bucket is configured to scoop up the bulk load from the bottom to the top at the tip of the L-shaped circulation digging section. There is no possibility that the deflection of the L-shaped circulation excavation section is increased without limit, and the position control for the cargo handling control of the bucket chain type elevator can be stably and easily performed. In addition, it is possible to improve the unloading efficiency in the case where the central part of the bulk load is greatly depressed as in the case of taking two ports.

Further, since the filling rate of the bulk load in the bucket can be adjusted by the excess bulk load spilling from the bucket at the inclined portion of the bucket chain line, there is no possibility that excessive tension is applied to the link chain. It is possible to reduce the weight of the device and to exert a stable cargo handling ability.

Further, the provision of the spilled load discharging device can prevent the bulk load spilled from the bucket from falling on the link chain and hindering the circulation movement of the link chain.

Further, by providing the spilled load discharging device with an opening whose opening can be adjusted, the discharge amount of the bulk load can be adjusted to adjust the filling amount of the bulk load in the bucket.

Further, since the bucket is configured such that the side edge protrudes from the bottom edge, it is possible to prevent the bulk load from spilling over and prevent the bulk load from falling onto the link chain. Further, by providing the bucket and the spilled load discharging device having an opening whose opening can be adjusted, the discharge amount of the bulk load from the opening can be easily and reliably adjusted, and the filling amount of the bulk load in the bucket can be easily adjusted. can do.

[Brief description of the drawings]

FIG. 1 is a side view extracting and showing an L-shaped circulation digging part of a bucket chain type elevator of an unloader according to a first embodiment of the present invention.

FIG. 2 is a side view extracting and showing an L-shaped circulation digging portion of a bucket chain type elevator of an unloader according to a second embodiment of the present invention.

FIG. 3 is an enlarged view of a main part of FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

5 is a cross-sectional view taken along line VV of FIG. 4, and is an explanatory view showing a state in which a bulk load spills from a bucket.

FIG. 6 is a perspective view of the bucket shown in FIG. 2;

FIG. 7 is an explanatory view showing a state of the bucket chain type elevator shown in FIG. 2 at the time of loading / unloading work at the second port.

FIG. 8 is a side view illustrating an L-shaped circulation excavation portion of a bucket chain type elevator of a conventional general unloader.

9 is an explanatory diagram showing a state of the bucket chain type elevator shown in FIG. 8 at the time of loading / unloading work at the second port.

[Explanation of symbols]

 Reference Signs List 1 'vertical column 2 swing frame 3 bottom frame 4 tip sprocket 5 rear sprocket 6a link chain 8 swing cylinder 9 tilt cylinder 10 hold wall 11 bulk load 11' extra bulk load 21,21 'bucket chain elevator 22,22 'Bucket 22a, 22a' Opening 22b 'Side plate 22c' Bottom plate 22d 'Chain mounting part 22b "Projection 23 Circulation direction 24 Spilled load discharging device 25 Load receiving table 25a Upper side load receiving table 25b Lower receiving table 26, 26' Bucket chain line 27 Support frame 28, 31a, 31b, 31c Opening 29 Opening adjustment plate 30 Opening / closing cylinder 31 Discharge chute

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Nobuto Iwamoto 4-22, Kannonshinmachi, Nishi-ku, Hiroshima-shi, Hiroshima Mitsubishi Heavy Industries, Ltd. Hiroshima Works (56) References JP-A-58-69635 (JP, A) JP-A-61-217437 (JP, A) JP-A 50-1556979 (JP, U) JP-A 61-165934 (JP, U) JP-A 32-15050 (JP, Y1) (58) (Int.Cl. ⁷ , DB name) B65G 67/60-67/62 B65G 17/12-17/14 B65G 17/36 B65G 65/00-65/28

Claims (5)

(57) [Claims] 1. A bucket chain line having a link chain and a plurality of buckets fixed to the link chain at a lower end portion is configured to circulate in a substantially L-shape to scrape a bulk load. In a bucket chain type elevator of an unloader having an L-shaped circulation digging part, the bucket chain line is circulated in a direction from a rear part of the L-shaped circulation digging part to a tip part, and the bucket is connected to the bucket chain line. Attached to the link chain so that the opening faces the direction of the tip when moving from the rear to the tip along with the circulating movement. The falling load from the bucket caused by the inclination when ascending the inclined part of the bucket chain line toward In order to adjust the filling amount of Luo load, bucket chain elevator of the unloader, characterized in that adjusted to provide a predetermined angle of repose in the bucket at the inclined portion. 2. A bucket chain type elevator of an unloader according to claim 1 , further comprising a load receiving platform facing a lower surface and a side surface of the bucket when ascending the inclined portion of the bucket chain line. An unloader bucket chain type elevator equipped with: 3. The bucket chain type elevator of an unloader according to claim 2 , further comprising: a receiving platform provided with a small gap between a lower surface of the bucket and a surface of the receiving platform facing the lower surface of the bucket. A bucket chain type elevator of an unloader, characterized in that an opening whose opening can be adjusted is provided on the surface of the unloader. 4. The bucket of the unloader according to claim 2,
In a Tochen type elevator, An opening is provided in the surface of the receiving table facing the lower surface of the bucket.
Ke It is a substantially U-shaped and hollow member whose upper and lower parts are open.
And the upper opening communicates with the opening of the loading tray.
The lower opening occupies the outside of the link chain Discharge
Unloader bucket chair characterized by having a sheet
En-type elevator. 5. The bucket chain elevator of an unloader according to claim 1, 2 , 3 or 4, wherein the bucket has a side edge protruding from an edge of the bottom face at an opening side thereof, The protrusion
Next to the bulk load as it falls from the bucket
A bucket chain type elevator of an unloader characterized by preventing spillage .