JP2010241551A - Stacking and discharging device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a preferable stacking and discharging device for easily stacking a cargo to an appropriate place in a storage space, eliminating the need of mounting and transferring a bulk cargo between integral conveyers of a boom, and only rotating the conveyers in respective predetermined directions. <P>SOLUTION: The stacking and discharging device 1 stacks/discharges the bulk cargo to/from the storage space by using the conveyers provided in the turning boom 2. The boom 2 includes (a) a stacking-dedicated stacking conveyer 10 which connects the vicinity of a turn center 2a and a stacking drop position 2b at an intermediate portion of the boom 2, and (b) a discharging-dedicated reclaiming conveyer 20 which connects the distal end of the boom 2 and a discharging drop position 2c at the vicinity of the turn center 2a. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The invention according to the claims relates to a loading / dispensing device (stacker reclaimer) for stacking loose items such as coal and ore to / from the storage.

  Generally, stacking (stacking) and discharging (reclaiming) of loose articles are performed by a boom conveyor. The boom conveyor is an arm-like boom that can be horizontally swiveled, vertically raised and lowered, and is normally provided with one belt conveyor. Carrying bulk goods on the conveyor, transporting them and dropping them to an appropriate place (mounting pile) in the storage area, while loading them, reverse the boom conveyor to reverse the storage place Make a payout by carrying to. A scraping means such as a bucket wheel is provided at the tip of the boom conveyor, and at the time of the above-mentioned dispensing, scraps in the storage are scraped out and placed on the conveyor.

  When using a boom conveyor having a single belt conveyor as described above, scrapes are scraped out from the tip of the boom and then, when stacked, the rose is dropped from the tip of the boom and stored. Form a mountain on the ground. However, if a loose article is dropped from the same boom tip as the scraping end at the time of payout, the loose article may not be compactly stacked at a desired location in a storage area with a limited area. Since the turning angle of the boom is not unlimited, if the reach (the length of the turning arm) to the dropping opening for stacking is too long, the roses cannot be deposited at an appropriate position. Therefore, in Patent Document 1 below, a new loading / dispensing device is proposed that can drop a rose from the middle of the boom during loading.

The loading / dispensing device described in Patent Document 1 has a structure generally shown in FIG. That is,
As in the above example, the two belt conveyors 40 and 50 are arranged so as to partially overlap each other as shown in the figure in the integrated boom 32 that can be horizontally turned, lifted, and run.
The conveyor (boom conveyor) 40 from the vicinity of the turning center 32a of the boom 32 to the middle part of the boom 32 is used for both loading and unloading by rotating forward and reverse. A conveyor (boom feeder) 50 from the position of a certain bucket wheel 34 to the middle of the boom 32 is used only for dispensing.
-When stacking, the boom conveyor 40 is rotated in the forward direction, and the bulk material received near the pivot center 32a of the boom 32 is transported and dropped at the middle of the boom 32 (stacking drop position 32b). In this case, the loose article received from the bucket wheel 34 is conveyed by the boom feeder 50 to the middle of the boom 32, transferred to the reverse boom conveyor 40, and further conveyed to the turning center 32a of the boom 32. It is dropped at the nearby end (dispensing drop position 32c).

Japanese Patent No. 3420285

  The loading / dispensing device (see FIG. 5) described in Patent Document 1 can perform loading and dispensing of roses using an integral boom, and the loading is performed at the middle of the boom. It has the merit that a rose can be compactly deposited in a desired place of a storage place by dropping the rose. However, such a loading / dispensing device is not necessarily advantageous in the following points.

That is,
・ When the payout is performed, the loose article is transferred from the boom feeder to the boom conveyor as described above in the middle part of the boom, and vibration is generated accordingly. This vibration tends to promote wear of each part of the conveyor and increase the maintenance burden.
-Since the boom conveyor is driven in forward and reverse rotations during loading and unloading, it can be worn out very quickly, requiring frequent replacement of parts.
A skirt-shaped guide member (reference numeral 55 in FIG. 5) is required at the portion where the transfer from the boom feeder to the boom conveyor is performed when the payout is performed so that the loose article can be transferred to the center of the boom conveyor. When the boom conveyor is normally driven to perform stacking, it is necessary to retract the guide member so as not to come into contact with the loose objects on the boom conveyor.
・ It is necessary to provide a work passage in the boom for maintenance of the two belt conveyors, but it is difficult to secure a sufficient work space in the passage in the vicinity where the above transfer is performed. This is because the skirt-shaped guide member, its operating means, and the boom feeder drive unit must be provided in the vicinity thereof.
・ Because the boom conveyor is rotated forward and backward and does not have a length that covers the entire length of the boom, the belt is likely to meander, and troubles are likely to occur. It should be noted that the conveyor belt tends to meander even when the forward and reverse rotations are repeated and the length is short.
・ As shown in Fig. 5, the boom feeder is generally provided with an inclination so that the tip side is down compared to the boom. May be difficult to transport.
-It is impossible to position the end of the boom conveyor near the pivot center of the boom at a location that is advantageous for both loading and unloading. That is, as shown in FIG. 5, the end 32 c is located at a position beyond the turning center 32 a (to the right in FIG. 5) so that loose objects can be received from the chute 37 a at the upper end of the tripper conveyor 37 during stacking. Although it is provided, at that position, when a payout is performed, a loose article cannot be dropped to the center position of the unloading hopper 35, and the volume of the hopper 35 may not be fully utilized.
In addition, the format shown in FIG. 6 can be considered as an application example of the prior art. In this configuration, the stacking conveyor 41 is arranged so as to be fed back from the tip in the conventional form of a stacker reclaimer called a boom conveyor capable of rotating forward and reverse.
However, with this arrangement, even if there is the same function as the above-described prior art, there is a problem that the load on the boom 32 is heavy because the tip is heavy.

  The claimed invention has been completed in consideration of the above points, and it is not necessary to transfer loose objects between conveyors in an integral boom, and each of these conveyors only rotates in a certain direction. A preferred loading / dispensing device is provided.

The stacking / dispensing device according to the claimed invention uses a conveyor provided on a boom that swivels (or moves up and down or horizontally) to load and store roses from the storage. In the loading / dispensing device that performs
In the boom,
a) A stacking conveyor dedicated to stacking from the vicinity of the center of rotation to the stacking and dropping position in the middle of the boom,
b) It is characterized by the attachment of a reclaiming conveyor dedicated to the delivery from the tip of the boom (the part where the scraping means such as bucket wheel is provided) to the delivery drop position near the center of the turn. FIG. 1 schematically shows an example of such an apparatus, in which reference numeral 2 is a boom, 2a is a turning center, 10 is a stacking conveyor, and 20 is a reclaiming conveyor.

In the stacking / dispensing device having such a configuration, the packing and dispensing of the roses can be performed as follows. First, at the time of stacking, the stacking conveyor is driven in the direction of the arrow shown in the figure, and the bulk material received in the vicinity of the pivot center of the boom is transported and dropped at a stacking drop position in the middle of the boom. On the other hand, when paying out, the reclaiming conveyor is driven in the direction of the arrow shown in the figure, and the bulk material received from the scraping means at the tip of the boom is transported by the reclaiming conveyor to drop out near the turning center. Drop in position.
For this reason, in this apparatus, it is not necessary to transfer a loose article between the two conveyors, both when loading and when paying out. Further, the two conveyors are exclusively for loading or discharging, and the driving directions are constant and do not need to be reversed. Due to such operational characteristics, this device has the following advantages. That is,
・ There is no vibration caused by transfer of loose objects between conveyors. Therefore, the consumption of each part of the conveyor is slow, and the maintenance burden is reduced compared to the example of FIG.
-Since the conveyors used for loading and unloading are different, there is no inconvenience that wear is biased toward one of the conveyors.
-Since there is no need to transfer loose objects between the conveyors, there is no need for a guide (skirt-like) member, and no means and operation for retracting it.
-The drive section of each conveyor can be provided in the vicinity of the pivot center of the boom, so that it is not necessary to arrange the drive section of the conveyor and the skirt-shaped guide member in the middle of the boom, so that the work path has a sufficient space. Can be provided on the boom.
・ Because none of the above conveyors is driven by switching between normal rotation and reverse rotation, belt meandering and the like are unlikely to occur, and accordingly troubles are less likely to occur.
-Since there is no need to transfer loose objects between conveyors, none of the conveyors need to have a specific inclination with respect to the boom. Therefore, even when the boom is tilted for use, it is difficult to cause a disadvantage with respect to the conveyance of loose objects.
・ Since the stacking conveyor dedicated to loading and the reclaiming conveyor dedicated to dispensing are separate and independent, the end of each conveyor is positioned at each location advantageous for loading and unloading near the pivot center of the boom. be able to.

In the loading / dispensing device according to the invention, a stacking conveyor is provided above the reclaiming conveyor in the boom, and the stacking and dropping device is moved to the loading and dropping position without being transferred from the front end of the stacking conveyor to the reclaiming conveyor. A guide chute for dropping an object may be provided. That is, the conveyors are arranged as shown in FIG. 1, for example. Further, for the guide chute, for example, the loose article may be discharged from the right side and / or the left side of the reclaiming conveyor to the lower part.
In such a case, during stacking, loose objects dropped by the upper stacking conveyor at the stacking drop position can be smoothly loaded through the guide chute without being placed on the reclaiming conveyor below. Fall into.

Or, conversely, a reclaiming conveyor is provided above the stacking conveyor in the boom, and a guide chute is used for dropping loose articles from the front end of the reclaiming conveyor onto the stacking conveyor at the dispensing drop position. May be provided. That is, the vertical relationship between the stacking conveyor and the reclaiming conveyor is reversed from the example of FIG. 1, and the installation position of the guide chute is also changed.
In such a case, when the material is dispensed, the loose article dropped by the upper reclaiming conveyor at the dispensing drop position falls smoothly onto the hopper or the like through the guide chute without being placed on the stacking conveyor below. .
If the width of the boom can be increased, the stacking conveyor and the reclaiming conveyor are arranged adjacent to each other in the width direction at the same height level, rather than either one of them being upward or downward. It's also good. Even in this case, if the two conveyors are close to each other, it is preferable to provide the guide chute as described above at the loading drop position or the discharge drop position (or both).

The stacking conveyor and the reclaiming conveyor are preferably provided in parallel (including the case of being substantially parallel) with respect to the boom length direction.
In the stacking / dispensing device of the invention, there is no reason to give a specific inclination angle between the conveyors, unlike the example of FIG. 5, because the bulk material is not transferred between the conveyors as described above. . Therefore, the two conveyors can be arranged parallel to the boom as described above, and when doing so, when the boom is tilted for loading and unloading, both conveyors are inclined at an inclination angle greater than that of the boom. Since there is no such thing, it is difficult for a situation in which it is difficult to be transported due to slipping of a loose article.

As for the stacking conveyor and the reclaiming conveyor, both drive units may be provided near the turning center of the boom.
The vicinity of the turning center is a portion corresponding to the base end portion of the boom, can have high mechanical rigidity, and can easily provide a wide work space. Therefore, if the drive section of each conveyor is provided in the vicinity thereof, the influence of vibration during driving can be reduced, and a work space can be increased to facilitate maintenance work and the like.

In the vicinity of the center of swiveling in the boom, it is particularly preferable that the payout drop position, which is the end of the reclaiming conveyor, and the end of the stacking conveyor are provided at different positions.
As described above, in the stacking / dispensing device of the invention, the stacking conveyor dedicated for loading and the reclaiming conveyor dedicated for dispensing are separate and independent, so that the discharging drop position and stacking which are the end of the reclaiming conveyor are separated. In this way, it is possible to provide the end portions of the conveyor at different positions. If both are provided at different positions, the stacking conveyor will surely receive the bulk material from the tripper conveyor during stacking, and the reclaiming conveyor will be placed at the optimal position in the hopper during dispensing. Can be dropped. For example, as shown in FIG. 1, the end 11 of the stacking conveyor 10 is provided at a position beyond the chute 7a of the tripper conveyor 7 (to the right of the turning center 2a in FIG. 1), and the end of the reclaiming conveyor 20 22 is the front of the lower hopper 5 (slightly to the left of the swivel center 2a in FIG. 1), the stacking conveyor 10 reliably receives loose objects from the chute 7a and reclaims. The conveyor 20 will drop loose objects in the proper position to maximize the volumetric efficiency of the hopper 5.

According to the loading / dispensing device of the invention, as in the loading / dispensing device described in Patent Document 1, it is possible to stack and pay out loose articles by an integral boom, and in the loading, the boom The roses can be dropped from the middle, so that the roses can be deposited at a preferred location in the storage area. In addition, it is not necessary to transfer loose articles between the conveyors in the boom, and it is not necessary to reverse the driving direction of each conveyor during loading and unloading. From this point, for example, the following effects can be obtained.
・ No vibration caused by transfer of loose objects between conveyors, reducing the maintenance burden on conveyors.
・ A work passage with sufficient space can be provided in the boom.
・ Because the driving direction is constant for all conveyors in an integrated boom, the belt is difficult to meander and therefore troubles are less likely to occur.

In particular, in the vicinity of the pivot center of the boom, if the end of each conveyor is provided at a preferred position,
・ A favorable condition is realized in which the stacking conveyor reliably receives loose objects from the tripper conveyor during loading and the reclaiming conveyor drops the loose objects to the optimal position in the hopper during dispensing. .

It is a figure which shows embodiment of invention, Comprising: It is a conceptual diagram which shows the principal part of the loading / dispensing apparatus. It is a side view which shows the loading / dispensing device 1 as a whole. It is a figure which shows the guide chute | shoot 13 grade | etc., Comprising: It is the III-III sectional drawing in FIG. It is a front view which shows the vicinity of the turning center 2a in the loading / dispensing device 1 in detail. It is a conceptual diagram which shows the principal part about the conventional loading / dispensing apparatus. It is a conceptual diagram which shows the principal part about the other loading / dispensing apparatus considered as a prior art.

An embodiment of a loading / dispensing device 1 according to the invention will be described with reference to FIGS.
As shown in FIG. 1, the stacking / dispensing device 1 is a unitary boom 2 in which a stacking belt conveyor 10 dedicated for loading and a reclaiming belt conveyor 20 dedicated for discharging are assembled one by one. The boom 2 is supported by a support structure 3 at the right base end in the figure, and includes a bucket wheel 4 at the left end. The boom 2 can be horizontally swiveled within a predetermined angle range around the turning center 2 a of the support structure 3, and can be lifted (swinged) so that the tip is moved up and down. The provided wheel 6 can travel on a rail (not shown).

The stacking belt conveyor 10 provided in such a boom 2 has end pulleys 11 and 12 at the base end portion (near the turning center 2a) of the boom 2 and the vicinity of the stacking drop position 2b at the middle of the boom 2, respectively. A conveyor belt is wound between them. When stacking loose objects in a storage area (not shown), the belt is circulated in one direction according to the arrow shown so that the loose objects are carried from the base end and dropped to the storage area at the dropping position 2b.
On the other hand, the reclaiming belt conveyor 20 has end pulleys 21 and 22 at the tip end portion of the boom 2 (position close to the bucket wheel 4) and the payout drop position 2c at the base end portion, respectively. A conveyor belt is wound between them. When paying out loose articles from the storage, the belt is circulated in one direction according to the arrows shown in the figure so that the loose articles are carried from the tip and put into the unloading hopper 5 described later at the drop position 2c.
As shown in the figure, the stacking belt conveyor 10 and the reclaiming belt conveyor 20 are spaced apart from each other and arranged substantially parallel to each other. Are assembled to the boom 2 so as to be almost parallel.

  The support structure 3 at the base end portion that supports the boom 2 is provided with a carry-out hopper 5 at a lower position along the turning center 2 a of the boom 2. Under the hopper 5, a quantitative cutout means (not shown) is provided, and a yard conveyor (same) is passed thereunder. The bulk material thrown into the hopper 5 from the reclaiming belt conveyor 20 is conveyed to the place of use via these.

  A chute 7 a provided at the upper end of the tripper conveyor 7 is connected to the upper position of the support structure 3 along the turning center 2 a of the boom 2. When a loose article loaded on a ship or the like (not shown) is conveyed by a yard conveyor and supplied from the chute 7a by the tripper conveyor 7, the loose article can be placed on the belt of the stacking belt conveyor 10. And as above-mentioned, this conveyor 10 conveys a rose thing, and loads a rose thing from the stacking fall position 2b to a storage place.

  In such a loading / dispensing device 1, bulk objects can be stacked and discharged by the integrated boom 2, and the bulk objects can be dropped from the dropping position 2 b located in the middle of the boom. Therefore, it is possible to deposit the roses in a compact place at a preferred place of the storage place (place near the range where the device 1 travels). In addition, there is an advantage that it is not necessary to transfer the bulk material between the conveyors 10 and 20 during loading and unloading, and it is not necessary to reverse the driving directions of the conveyors 10 and 20.

  FIG. 2 is a diagram showing the overall loading / dispensing device 1 of FIG. 1 in detail. The boom 2 is supported by the support structure 3 via the support frame 2d. Further, in order to reduce the mechanical burden for the support, a balance weight 2e is attached to a portion of the support frame 2d that extends to the opposite side of the boom 2 with the structure 3 interposed therebetween. Traveling wheels 7c are also arranged on the support frame 7b of the tripper conveyor 7 so that the tripper conveyor 7 can move horizontally together with the loading / dispensing device 1 that travels horizontally.

Since the stacking belt conveyor 10 is disposed above the reclaiming belt conveyor 20 in the boom 2, a guide chute 13 is provided in the boom 2 at the stacked dropping position 2 b. The guide chute 13 is a cylindrical body whose lower part is bifurcated as shown in FIG. 3 so as to avoid the reclaiming belt conveyor 20. The loose article dropped from the upper stacking belt conveyor 10 (the end pulley 12) at the dropping position 2b is guided by the guide chute 13 and smoothly falls without being placed on the lower reclaiming belt conveyor 20. Stacked in storage. The chute may be discharged from the right or left of the reclaiming conveyor in addition to bifurcated, and a structure may be adopted in which a damper is provided on the chute and the left and right are switched.
However, the guide chute 13 is not limited to such a bifurcated shape. For example, if the position of the stacking belt conveyor 10 is shifted right or left in FIG. It can also be cylindrical.

  FIG. 4 shows the details of the loading / dispensing device 1 in the vicinity of the turning center 2a (support structure 3) at the base end portion of the boom 2. As shown above, the illustrated portion includes the unloading hopper 5, the traveling wheel 6, the chute 7 a of the tripper conveyor 7, and a drive unit (not shown) for turning, lifting, and traveling the boom 2. ing. Further, a drive unit (not shown) for driving the stacking belt conveyor 10 is also provided near the turning center 2a by connecting to the end pulley 11, and a drive unit for driving the reclaiming belt conveyor 20 (same as above). Also, it is connected to the end pulley 22 and is also provided near the turning center 2a. The vicinity of the turning center 2a and the support structure 3 is a portion that firmly supports the boom 2 and has high mechanical rigidity, and is therefore suitable for arranging such a drive unit and the like.

  In the vicinity of the illustrated turning center 2a, the end pulley 11 of the stacking belt conveyor 10 and the end pulley 22 of the reclaiming belt conveyor 20 are provided at different positions not only in the height but also in the horizontal direction as illustrated. . That is, the end pulley 11 of the conveyor 10 is provided at a position that exceeds the turning center 2a by several meters (to the right in the drawing), and the dispensing drop position 2c that is the position of the end pulley 22 of the conveyor 20 is set from the turning center 2a. It was installed at a position several meters in front (left side in the figure). As such, if the conveyor 10 passes directly under the chute 7a and its end pulley 11 extends to a position sufficiently past the chute 7a, the conveyor 10 is less likely to spill loose objects, and the tripper conveyor 7 Receipt of roses is ensured. Also, if the payout drop position 2c of the conveyor 20 is slightly in front of the unloading hopper 5 at the turning center 2a (a position that does not reach the center), a falling object falling along a parabola according to the conveying speed of the conveyor 20 The hopper 5 is charged near the center. If a loose article is thrown toward the center of the hopper 5, the volumetric efficiency of the hopper 5 can be utilized to the maximum, which is advantageous.

DESCRIPTION OF SYMBOLS 1 Loading / dispensing device 2 Boom 2a Turning center 2b Loading drop position 2c Discharging drop position 4 Bucket wheel 5 Hopper 7 Tripper conveyor 7a Chute 10 Stacking belt conveyor 11, 12 End pulley 13 Guide chute 20 Reclaiming belt conveyor 21・ 22 End pulley

Claims (7)

A loading / dispensing device that performs loading and unloading of roses from a storage using a conveyor provided on a swiveling boom,
Dedicated stacking conveyor that connects the boom to the center of the boom from the center of the swivel to the stacking and dropping position in the middle of the boom; A reclaiming conveyor is mounted and a loading / dispensing device characterized by that.   The stacking conveyor is provided above the reclaiming conveyor in the boom, and is used for dropping loose articles from the tip of the stacking conveyor to the reclaiming conveyor at the stacking and dropping position. The loading / dispensing device according to claim 1, further comprising a guide chute.   The reclaiming conveyor is provided above the stacking conveyor in the boom, and guides for dropping loose articles without being transferred from the front end of the reclaiming conveyor to the stacking conveyor at the dispensing drop position. The loading / dispensing device according to claim 1, further comprising a chute.   The stacking / dispensing device according to any one of claims 1 to 3, wherein the stacking conveyor and the reclaiming conveyor are provided in parallel to the length direction of the boom.   The stacking / dispensing device according to any one of claims 1 to 4, wherein the stacking conveyor and the reclaiming conveyor are both provided near a center of rotation in the boom.   3. A payout drop position, which is an end portion of the reclaiming conveyor, and an end portion of the stacking conveyor are provided at different positions in the vicinity of the center of turning in the boom, respectively. Loading / dispensing device described in 1.   3. The loading / dispensing device according to claim 2, wherein the guide chute discharges loose articles from the right side and / or the left side of the reclaiming conveyor to the lower part.

Images