JP6982415B2 - Reclaimer and its inspection method - Google Patents

Description

The present invention relates to a reclaimer for transporting loose objects such as coal and an inspection method thereof.

Conventionally, loose objects such as ore and coal that have been landed (hereinafter referred to as “payouts”) are stored in a stockyard having a vast area. The stockyard is equipped with a stacker as a means of loading and a reclaimer as a means of paying out. A stacker / reclaimer that combines the functions of a stacker and a reclaimer may be provided. In this specification and the documents of the claims, the reclaimer and the stacker reclaimer are collectively referred to as "reclaimer".

Such a reclaimer includes a boom capable of turning and undulating, a bucket wheel provided at the tip of the boom, and a boom conveyor provided along the boom. Then, the bucket wheel scrapes off the pile of the items to be paid out, drops them on the boom conveyor, conveys them to the base of the boom conveyor, and then distributes them to a predetermined place by another conveyor or the like. In a general reclaimer, a bucket wheel provided at the tip of the boom conveyor is arranged on the side of the boom conveyor. Therefore, above the boom conveyor, a chute that diagonally drops the payout dropped from the bucket wheel to an appropriate position of the boom conveyor is arranged.

As a prior art of this kind, there is a bucket wheel type reclaimer in which a boom conveyor and a bucket wheel are arranged concentrically and in series (see, for example, Patent Document 1).

Jikkai Sho 63-136625

By the way, a skirt is arranged below the chute that diagonally drops the payout to the boom conveyor, and this skirt prevents the payout from scattering from the boom conveyor. A shatterproof liner (such as a rubber liner, hereinafter simply referred to as a "liner") is attached to the skirt, and the lower end of the shatterproof liner is provided so as to be in contact with the upper surface of the belt of the boom conveyor. For this reason, the lower end of the shatterproof liner is worn, and the gap between the liner and the belt is further expanded, so maintenance work such as daily inspection and adjustment is required for the liner part of the skirt. You will need it.

However, in order to perform maintenance work on the liner part of the skirt, lower the tip side of the boom conveyor, form a scaffolding from the ground using a step stand or aerial work platform, and enter the gap between the bucket wheel and the chute. Adjustment work such as shatterproof liner will be performed from the back side of the skirt, but the skirt on the side where the bucket wheel is placed has a concentration of bucket wheels, ring guides, chutes, etc., and the maintenance space is narrow.

In this way, the maintenance work for the skirt part is a work at a height of about 2 m from the ground, and the work is done from the gap between the narrow bucket wheel and the boom conveyor, which makes the work very poor. ..

In the above prior art, since the boom conveyor and the bucket wheel are arranged in series, such a problem does not occur.

Therefore, an object of the present invention is to provide a reclaimer capable of efficiently performing maintenance work such as a skirt provided under the chute in a configuration in which a bucket wheel and a boom conveyor are arranged in parallel, and an inspection method thereof. do.

In order to achieve the above object, the reclaimer according to the present invention is a reclaimer in which a bucket wheel is arranged at the tip of a boom conveyor, and a payout dropped from the bucket wheel is loaded on the boom conveyor via a chute and discharged. The chute is provided with a pair of side skirts that prevent the payout falling from the chute onto the boom conveyor from scattering, and the chute has the payout dropped from the bucket wheel on the boom. The bucket-side chute has a bucket-side chute that is inclined so as to be guided onto the conveyor, and the bucket-side chute is configured such that a lower portion located above one of the side skirts can be opened and closed.

With this configuration, by opening the lower part of the bucket side chute, an inspection port can be formed above the side skirt on the bucket wheel side. As a result, maintenance work of the outer portion of the chute, that is, the side skirt on the bucket wheel side can be efficiently performed from the inside of the bucket side chute through this inspection port.

Further, the bucket-side chute may be provided with an opening / closing door at the lower end thereof, and the opening / closing door may be configured to be detachable from the boom conveyor on the bucket-side chute.

With this configuration, the inspection port formed at the lower end of the chute on the bucket side by removing the openable door can be used to inspect and adjust the mounting condition of the shatterproof liner attached to the skirt. You can easily do it.

Further, a pin having a detachable portion between the opening / closing door and the bucket-side chute around the opening / closing door, and the detachable portion has only an upper portion of a connecting pin for inserting the opening / closing door and the bucket-side chute. It has a connecting portion and a pin engaging portion having a pullable fixing pin fixed to one of the opening / closing doors or the bucket side chute in the left-right direction and a pin hole formed on the other, and the pullable portion is possible. The fixing pin may be configured to be operable from the boom conveyor.

With this configuration, the work of fixing the opening / closing door to the bucket side chute and the work of removing it from the bucket side chute can be performed by attaching / detaching the connecting pin of the pin connecting portion and attaching / detaching the fixing pin of the pin engaging portion. It can be done easily.

On the other hand, the reclaimer inspection method according to the present invention is a reclaimer inspection method in which a bucket wheel is arranged at the tip of a boom conveyor, and a payout dropped from the bucket wheel is loaded on the boom conveyor via a chute and discharged. The openable portion of the lower part of the chute on the bucket side, which is inclined so as to guide the payout dropped from the bucket wheel onto the boom conveyor, is opened on the upper surface of the boom conveyor to open the inspection port. At the inspection port, the portion of the side skirt on the bucket side of the pair of side skirts that prevents the payout falling from the chute on the bucket side onto the boom conveyor is scattered. Check from the top of the boom conveyor.

With this configuration, maintenance work on the side skirt portion on the bucket wheel side can be efficiently performed through the inspection port formed by opening the openable portion of the lower portion of the bucket side chute from above the boom conveyor.

According to the present invention, an inspection port can be formed by opening the lower portion of the bucket-side chute that is inclined so as to guide the payout dropped from the bucket wheel onto the boom conveyor, and the bucket-side chute can be formed from this inspection port. It is possible to efficiently perform maintenance work such as the side skirt provided underneath.

FIG. 1 is a side view showing a reclaimer according to an embodiment of the present invention. FIG. 2 is an enlarged view of a side view showing the front end portion of the reclaimer shown in FIG. FIG. 3 is a cross-sectional view taken along the line III-III shown in FIG. FIG. 4 is an enlarged view showing the mounting structure of the skirt shown in FIG. FIG. 5 is a plan view of the portion of the chute shown in FIG. FIG. 6 is an enlarged view of the bucket-side chute in the VI arrow view shown in FIG. FIG. 7 is a back view of the bucket-side chute shown in FIG. FIG. 8 is a back view of the opening / closing door shown on the upper side of FIG. 7. FIG. 9 is an enlarged view of the attachment / detachment portion shown in FIG. 10 (A) and 10 (B) are drawings showing the configuration of the opening / closing door side of the attachment / detachment portion shown in FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiment, the opening / closing door 25 will be described as an example as a configuration in which the lower portion of the bucket side chute 21 can be opened / closed. Further, although the reclaimer 1 will be described as an example in the following embodiment, it can also be applied to a stacker / reclaimer having both the functions of the reclaimer 1 and the stacker.

(Overall composition of reclaimer)
FIG. 1 is a side view showing the reclaimer 1 according to the embodiment. The reclaimer 1 of this embodiment includes a traveling machine 2 traveling on a rail (not shown), a swivel table 3 that swivels horizontally on the traveling machine body 2, and a boom 4 having a base end supported by the swivel table 3. And have. The swivel base 3 includes an undulating cylinder 5 for undulating the boom 4, and a counterweight 7 supported in the direction opposite to the boom 4. By expanding and contracting the undulating cylinder 5, the boom 4 can undulate at the tip end portion of the boom 4 with the base end portion supported by the swivel base 3 as a fulcrum. Further, the swivel table 3 is provided with a cabin 6, and a cockpit is provided inside the cabin 6. The configuration for undulating the boom 4 is not limited to the undulating cylinder 5, and may be undulating with a winch or the like.

The boom 4 is provided with a boom conveyor 8 extending from the tip end portion to the base end portion, a drive machine (not shown) for driving the boom conveyor 8, and a bucket wheel 10 provided at the tip end portion. The boom conveyor 8 has an endless conveyor belt extending along the boom 4, and conveys and pays out the items to be paid out from the tip end portion to the base end portion of the boom 4. The bucket wheel 10 has a plurality of buckets 11 that scrape the payout and drop it on the boom conveyor 8. The plurality of buckets 11 are provided around the wheel 12, and can be rotated by rotationally driving the wheel 12 by the driving machine 13 (FIG. 3).

According to this reclaimer 1, the angle of the boom 4 is adjusted to the pile angle of the payout by the undulating cylinder 5 provided on the swivel table 3, and the wheel 12 of the bucket wheel 10 is rotated to be scraped off by the bucket 11. The payout is loaded on the boom conveyor 8. The payout loaded on the boom conveyor 8 is conveyed to the base end portion, then transshipped to another conveyor or the like and conveyed to a desired location.

(Composition of boom tip)
FIG. 2 is an enlarged view of a side view showing the tip portion of the reclaimer 1 shown in FIG. FIG. 3 is a cross-sectional view taken along the line III-III shown in FIG. FIG. 4 is an enlarged view showing the mounting structure of the skirt shown in FIG. In FIG. 2, the bucket wheel 10 is shown only by a turning circle, and the side chute 23 (FIG. 5) is not shown.

As shown in FIGS. 2 and 3, the bucket wheel 10 is arranged on the side of the tip end portion of the boom conveyor 8, and the bucket wheel 10 has an oblique arrangement in which the upper portion is inclined toward the boom conveyor 8. The bucket wheel 10 is supported by a wheel support frame 9 extending from the boom 4, and the wheel support frame 9 is provided with a drive device 13. The payout scraped up by the bucket 11 of the bucket wheel 10 is dropped in the vicinity where the bucket 11 is located at the rotation center C of the bucket wheel 10.

Therefore, at the portion where the payout is dropped from the bucket wheel 10, a chute 20 for loading the dropped payout into the central portion in the width direction on the boom conveyor 8 is provided. The chute 20 has a bucket-side chute 21 and a side chute 23 provided on the side of the boom conveyor 8, and a rear chute 22 provided on the tip of the boom conveyor 8. Further, below the chute 20, a pair of side skirts 30 are provided to prevent the payouts loaded on the boom conveyor 8 from the chute 20 from scattering laterally. Further, a rear skirt 39 is also provided to prevent scattering from the boom conveyor 8 to the rear (direction opposite to the transport direction of the payout). The side skirt 30 and the rear skirt 39 are provided with a shatterproof liner 33 (rubber liner or the like) in contact with the upper surface of the belt of the boom conveyor 8. In FIG. 2, the side skirt 30 is divided in the extending direction of the boom conveyor 8, but the number of divisions of the side skirt 30 is not limited to the illustrated example. Further, in this embodiment, an example is shown in which the side skirt 30 can be moved up and down by the elevating mechanism 15 provided on the frame 14 of the boom 4, but the presence or absence of the elevating mechanism 15 is not limited. The explanation is omitted.

As shown in FIG. 4, the bucket-side side skirt 30 shown on the right side of the figure is the side on which the bucket wheel 10 is provided, and is arranged diagonally at an angle similar to the angle of the bucket-side chute 21. There is. The side skirts 30 shown on the left side of the figure are arranged vertically to form a wall so that the payout dropped from the bucket side chute 21 (FIG. 3) on the right side of the figure does not scatter to the opposite side. There is. Hereinafter, the right side skirt 30 will be described. The same components of the left side skirt 30 are designated by the same reference numerals, and the description thereof will be omitted.

The support member 31 of the side skirt 30 is fixed to the configuration of the elevating mechanism 15 (FIG. 2) provided in the frame 14 (FIG. 3) of the boom 4, and the metal liner 32 is attached to the front side of the support member 31. It is provided. A shatterproof liner 33 is provided on the back side of the support member 31. The shatterproof liner 33 is attached so that the lower end thereof is in contact with the upper surface of the belt of the boom conveyor 8. On the outside of the shatterproof liner 33, a pressing member 34 that sandwiches the shatterproof liner 33 with the support member 31 is attached to the support member 31 with a bolt 34a. In the pressing member 34, the lower reinforcing portion 35 is pressed by the holding member 36 in the direction of the supporting member 31. The holding member 36 is pressed in the direction of the pressing member 34 by inserting the fixing member 38 from the lateral direction into the hole portion 37a of the bracket 37 provided in the supporting member 31. The method of inserting the fixing member 38 into the hole 37a of the bracket 37 and fixing it is a so-called cotter method. In this embodiment, the method of fixing the shatterproof liner 33 is a cotter method, but the method of fixing the shatterproof liner 33 is not limited to the cotter method.

By attaching the shatterproof liner 33 to the side skirt 30 in this way so that the lower end of the shatterproof liner 33 is in contact with the upper surface of the belt of the boom conveyor 8, the payouts falling on the boom conveyor 8 are scattered. Is being prevented. Since the portion of the shatterproof liner 33 in contact with the rotating boom conveyor 8 is worn, maintenance work such as position adjustment is required as described above.

According to the above-mentioned mounting structure of the shatterproof liner 33, when the position of the shatterproof liner 33 is adjusted, the pressing of the pressing member 34 by the holding member 36 is released by removing the fixing member 38. This makes it possible to adjust the position of the shatterproof liner 33 sandwiched between the pressing member 34 and the supporting member 31. After adjusting the position of the shatterproof liner 33, the fixing member 38 is inserted into the hole portion 37a of the bracket 37, so that the holding member 36 presses the shatterproof liner 33 and the shatterproof liner 33 is between the support member 31. Can be sandwiched between.

(Shoot composition)
FIG. 5 is a plan view of the portion of the chute 20 shown in FIG. FIG. 6 is an enlarged view of the bucket-side chute in the VI arrow view shown in FIG. FIG. 7 is a back view of the bucket-side chute shown in FIG. In FIG. 5, the bucket wheel 10 is not shown.

As shown in FIG. 5, since the payout is dropped from the bucket wheel 10 (FIG. 3) juxtaposed with the boom conveyor 8 to the boom conveyor 8, the direction in which the bucket wheel 10 of the boom conveyor 8 is arranged (this). (Upper part of the figure) is provided with a bucket-side chute 21 that is inclined so as to guide the payout onto the boom conveyor 8. A side chute 23 is provided in the vertical direction in the direction opposite to the boom conveyor 8 facing the bucket side chute 21. Further, since the payout dropped from the bucket wheel 10 is also scattered in the tip direction of the boom conveyor 8, a rear chute 22 is provided in the tip direction. The chute 20 is formed in a substantially U-shape in a plan view by the bucket side chute 21, the side chute 23, and the rear chute 22, and has a wall on which the payout dropped from the bucket 11 is piled up on the boom conveyor 8. It is formed. Liners 28 are fixed to the inner surfaces of the bucket side chute 21, the side chute 23, and the rear chute 22 by fixing bolts 28a (shown in FIGS. 6 and 7. The fixing bolts 28a are simply indicated by “circles”. ).

Then, as shown in FIG. 6, the bucket-side chute 21 from which the payout is dropped from the bucket wheel 10 is provided with an opening / closing door 25 which is an openable / closable portion at the lower portion. In this embodiment, the horizontally long rectangular opening / closing door 25 is provided in two in the vertical direction. By removing the opening / closing door 25, an inspection port can be formed above the side skirt 30. The opening / closing door 25 is provided so as to be closer to the base end direction of the boom conveyor 8 with respect to the rotation center C of the bucket wheel 10 of the bucket side chute 21. The portion where the opening / closing door 25 is provided is near the position where the payout dropped from the bucket wheel 10 falls, and is also the portion where the shatterproof liner 33 of the side skirt 30 is adjusted most.

As shown in FIG. 7, on the back surface of the bucket side chute 21, a detachable portion 40 is provided on the back surface of the bucket side chute 21 so that the opening / closing door 25 can be attached / detached to / from the peripheral portion of the opening / closing door 25. The attachment / detachment portion 40 is inserted between a pin engaging portion having a fixing pin 41 for positioning and locking the opening / closing door 25 with respect to the lower portion of the bucket side chute 21 and the opening / closing door 25 and the bucket side chute 21. It has a pin connecting portion having a connecting pin 42 for fixing the opening / closing door 25 to the bucket side chute 21.

(Composition of open / close door)
FIG. 8 is a back view of the opening / closing door 25 shown on the upper side of FIG. 7. FIG. 9 is an enlarged view of the attachment / detachment portion 40 shown in FIG. 10 (A) and 10 (B) are drawings showing the configuration of the attachment / detachment portion 40 shown in FIG. 9 on the opening / closing door side. Hereinafter, the upper opening / closing door 25 will be described as an example.

As shown in FIG. 8, the opening / closing door 25 is formed in a horizontally long rectangular shape, and in the upper part of the opening / closing door 25, a fixing hole 24a (lower opening / closing door 25) provided at the lowermost part of the bucket side chute 21 is provided. In the case of, a plurality of fixing pins 41 to be inserted into the fixing holes (same position and size as the fixing holes 24a) provided in the lower part of the upper opening / closing door 25 are provided at predetermined intervals. The portion where the fixing pin 41 is inserted into the fixing hole 24a and locked is the pin engaging portion. In this example, the opening / closing door 25 is provided with a fixing pin 41, and the fixing hole 24a is provided at the lowermost portion of the bucket-side chute 21 (FIGS. 7 and 9). However, either the opening / closing door 25 or the bucket-side chute 21 is provided. It suffices if the fixing pin 41 is provided on one side and the fixing hole 24a is provided on the other side.

Connecting pins 42 are provided at positions on both sides of the back surface of the opening / closing door 25. In this embodiment, a toggle pin is used as the connecting pin 42. The toggle pin 42 is connected to the back surface of the opening / closing door 25 by a chain 42b. Hereinafter, the connecting pin 42 is also referred to as a toggle pin 42. The opening / closing door 25 has a mounting structure that allows the opening / closing door 25 to fall by pulling out the connecting pin 42 by fixing the top and bottom with the connecting pin 42.

As shown in FIG. 9, the side portion of the opening / closing door 25 has a pin connecting portion for attaching the opening / closing door 25 to the bucket side chute 21 by a toggle pin 42. As shown in FIG. 10A, the back surface of the opening / closing door 25 is provided with a bracket 26 provided with an insertion hole 26a into which the toggle pin 42 is inserted, and a flange portion 27 as shown in FIG. 10B. A pin hole 27a is provided. Further, the flange portion 24 of the bucket side chute 21 is provided with a pin hole 24b for inserting the toggle pin 42 at a position facing the pin hole 27a provided in the flange portion 27 of the opening / closing door 25 (FIG. 9).

As a result, as shown in FIG. 9, the fixing pin 41 provided on the upper part of the opening / closing door 25 is inserted into the fixing hole 24a of the bucket side chute 21. Then, the toggle pin 42 is inserted from the insertion hole 26a of the bracket 26 while the pin holes 27a provided on both sides of the opening / closing door 25 and the pin holes 24b provided on the bucket side chute 21 are held so as to coincide with each other. , It is inserted into the pin hole 24b of the bucket side chute 21 through the pin hole 27a of the flange portion 27 of the opening / closing door 25. As a result, the stopper 42a provided at the tip of the toggle pin 42 rotates downward due to its own weight, and the toggle pin 42 cannot be pulled out in the direction of the opening / closing door 25. Since the base of the toggle pin 42 is locked to the bracket 26, the opening / closing door 25 is kept attached to the bucket side chute 21.

The opening / closing door 25 is divided into upper and lower parts in the present embodiment, but the height dimension of the opening / closing door 25 is such that the operator on the boom conveyor 8 hands from the gap X (FIG. 3) with the side skirt 30. It is restricted to a size that allows the toggle pin 42 to be inserted and removed. Therefore, when removing the opening / closing door 25, the toggle pin 42 is removed in order from the lower side.

(Maintenance work flow)
According to the reclaimer 1 configured as described above, the maintenance work of the portion of the side skirt 30 can be performed without entering a narrow space as described below. First, the belt of the boom conveyor 8 is cured so that the operator can work on the boom conveyor 8. Next, a hand is inserted from the upper surface of the boom conveyor 8 between the lower end of the bucket side chute 21 and the upper end of the side skirt 30, and the toggle pins 42 on both sides fixing the opening / closing door 25 are pinned to the pin holes 24b. Remove from the hole 27a and the insertion hole 26a. Then, the opening / closing door 25 is removed from the bucket side chute 21 by pulling out the fixing pin 41 from the fixing hole 24a and removing it. In the above-described embodiment, since the opening / closing door 25 is divided into upper and lower parts, the lower opening / closing door 25 is removed, and then the upper opening / closing door 25 is removed in the same manner. As a result, the lower part of the bucket-side chute 21 can be opened. Further, since the opening / closing door 25 is divided into two, the weight of one can be suppressed and the operator can hold and remove it by hand.

As a result, an inspection port having the size of the opening / closing door 25 can be formed at the lower part of the bucket side chute 21. Therefore, the operator can easily perform maintenance work such as adjusting the position of the shatterproof liner 33 located on the outside of the side skirt 30 from the inspection port from the inside of the bucket side chute 21. Even if the space between the buckets 10 is narrow, work can be performed from above the boom conveyor 8.

After the maintenance work, the fixing pin 41 of the upper opening / closing door 25 is inserted into the fixing hole 24a, and the toggle pin 42 is inserted in a state where the pin hole 27a of the opening / closing door 25 and the pin hole 24b of the bucket side chute 21 are aligned. It is inserted from the insertion hole 26a into the pin hole 24b via the pin hole 27a. This completes the work of attaching the upper opening / closing door 25 to the bucket side chute 21. After that, the lower opening / closing door 25 is attached in the same manner. The work of attaching the opening / closing door 25 can also be efficiently performed from above the boom conveyor 8. Then, by removing the curing of the belt, it can be returned to the original state, and the entire maintenance work can be efficiently performed. That is, instead of forming a scaffold for each maintenance work and performing aerial work in a narrow place, an inspection port formed at the lower part of the bucket side chute 21 from a wide place on the boom conveyor 8 by using the boom conveyor 8 is provided. Maintenance work can be performed efficiently through this.

(Other variants)
In the above-described embodiment, an example in which the opening / closing door 25 is used to open / close the lower part of the bucket-side chute 21 has been described. The swing type can be used, and the configuration in which the lower portion of the bucket-side chute 21 can be opened and closed is not limited to the above embodiment.

Further, the number of divisions of the opening / closing door 25, the size of the opening / closing door 25, etc. are examples, and may be set according to the size of the bucket side chute 21 and the distance from the side skirt 30, which impairs the gist of the present invention. Various changes can be made without limitation, and the present invention is not limited to the above-described embodiment.

1 reclaimer
4 boom
8 Boom conveyor 10 Bucket wheel 11 Bucket 20 Chute 21 Bucket side chute 22 Rear chute 23 Side chute 25 Open / close door 30 Side skirt 33 Anti-scattering liner 38 Fixing member 40 Detachable part 41 Fixing pin 42 Connecting pin (toggle pin)
X gap

Claims (3)

A reclaimer in which a bucket wheel is arranged at the tip of the boom conveyor, and the payout dropped from the bucket wheel is loaded on the boom conveyor via a chute and discharged.
A pair of side skirts located in the width direction of the boom conveyor are provided so as to prevent the payout falling from the chute onto the boom conveyor from scattering.
The chute comprises a bucket side chute and a side chute in the width direction of the boom conveyor.
The bucket-side chute is located closer to the bucket wheel than the side chute.
The bucket side chute for tilting the object payout object being dropped from the previous SL bucket wheel to direct onto the boom conveyor comprises an openable and closable door at the lower end portion positioned above the front SL side skirts,
The opening / closing door is configured to be detachably attached to the bucket-side chute from the boom conveyor.
A reclaimer characterized by that. A detachable portion is provided between the opening / closing door and the bucket-side chute around the opening / closing door.
The detachable portion includes a pin connecting portion having only an upper portion of a connecting pin inserted into the opening / closing door and the bucket side chute, and a pullable fixing pin fixed to one of the opening / closing door or the bucket side chute in the left-right direction. With a pin engaging portion having a pin hole formed on the other side,
The pullable fixing pin is configured to be operable from above the boom conveyor.
The reclaimer according to claim 1. The reclaimer inspection method according to claim 1 , wherein a bucket wheel is arranged at the tip of the boom conveyor, and the payout dropped from the bucket wheel is loaded on the boom conveyor via a chute and discharged.
Wherein at the upper surface of the boom conveyor, the open lower openable portion of said bucket side chute inclined to be paid out was to direct onto the boom conveyor forms an inspection opening to be dropped from the bucket wheel,
At the access door, the bucket-side falling from sheet chute onto the boom conveyor device under payout object is the side portion and the portion of the skirt boom on the conveyor in buckets side of the pair of side skirts to prevent the scattering Check from
How to inspect the reclaimer, which is characterized by this.

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