JP3004842B2 - Bucket chain elevator drilling rig - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bucket chain elevator excavator used for unloading bulk goods, for example, and is intended to reduce the load on the tip bucket.

[0002]

2. Description of the Related Art Bulk loads such as ores and the like are unloaded by moving a bucket chain elevator excavator into and out of a hold. A conventional bucket chain elevator excavator will be described with reference to FIG. FIG. 11 shows a side view of a conventional bucket chain elevator excavator.

[0003] As shown in the figure, a vertical frame 3 is supported at the lower end of an elevator column 1 via a shaft 2 so as to be swingable about a horizontal axis, and a lower end of the vertical frame 3 is provided with a shaft 4 parallel to the shaft 2. The excavation frame 5 as a horizontal frame is supported rotatably around a horizontal axis via the. The vertical frame 3 and the excavation frame 5 form an L-shaped frame. A main body 6 a of a swing cylinder 6 is rotatably supported on the elevator column 1.
The tip of b is rotatably supported by the vertical frame 3. The vertical frame 3 has a main body 7
a is rotatably supported, and the rod 7b of the rotary cylinder 7 is
Is rotatably supported by the excavation frame 5.
That is, the vertical frame 3 is rocked by the expansion and contraction of the rod 6 b by the driving of the swing cylinder 6, and the excavation frame 5 is rotated by the expansion and contraction of the rod 7 b by the driving of the rotating cylinder 7. Regardless of the swing angle, the excavation frame 5 is kept horizontal, and the L-shaped frame swings (see the dashed line in FIG. 11).

[0004] Guide sprockets 8, 9, 10, 11 are provided at the lower portion of the elevator column 1, the upper end of the vertical frame 3, and both ends of the excavating frame 5, and the guide sprockets 8, 9, 10, 11 are provided inside the elevator column 1. The bucket chain elevator 12 which circulates around is wound.
A large number of buckets 13 are supported by the bucket chain elevator 12, and the bucket chain elevator 12 is cyclically driven by driving means (not shown). As the bucket chain elevator 12 circulates, the bulk load 14 is carried into the elevator column 1 by the bucket 13 and is unloaded. Incidentally, reference numeral 15 in the figure denotes a wall of the hold.

The conventional bucket chain elevator excavator described above, as shown by the solid line in FIG. 11, extends the rod 6b of the oscillating cylinder 6 and contracts the rod 7b of the rotating cylinder 7, thereby making the vertical frame 3 The excavation frame 5 is set in an L-shaped state. In this state, the cargo outlet of the ship is vertically moved in and out, and the unloading operation of the bulk goods 14 near the center in the hold is performed. In addition, as shown by a two-dot chain line in FIG. 11, the rod 6b of the swing cylinder 6 is contracted and the rod 7b of the rotary cylinder 7 is extended, so that the excavation frame 5 is maintained horizontal and the vertical frame 3 Swing forward. In this state, the unloading operation of the bulk goods 14 near the wall 15 is performed.

[0006]

In the conventional bucket chain elevator excavator, the L-shaped frame is laterally moved while the bulk load 14 is scraped off by the bucket 13 to discharge the bulk load. When unloading, the bulk load 14 leaning on the wall 15 may cause unexpected collapse of the load. When the bulk load 14 collapses, the bulk load is applied to the bucket chain elevator 12 at the tip of the excavation frame 5 and a large load is applied, and a large resistance is generated in the circulation drive of the bucket chain elevator 12, and the circulation of the bucket chain elevator 12 is caused. Or damage to the equipment.

In such a state, at the driver's discretion, an operation of retracting the elevator column 1 from the wall 15 and advancing the elevator column 1 a small distance again (indicated by arrows a and b in the figure) and the like is performed manually, and an overload state occurs. Have been around. However, this overload avoidance operation is difficult to cope with accurately, imposing an undue burden on the device, and inevitably reducing the efficiency of the unloading operation.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a bucket chain elevator excavator capable of reducing an overload applied to a digging section, thereby preventing wear of the apparatus due to an overload and improving the efficiency of unloading operation. The purpose is to prevent lowering.

[0009]

According to a first aspect of the present invention, an L-shaped frame comprising a vertical frame and a horizontal frame is supported at the lower end of an elevator column, and is provided at both ends of the horizontal frame. In a bucket chain elevator excavator provided with a bucket chain elevator that wraps around a sprocket and circulates into the elevator column, a protection plate for preventing collapse of the load on the tip bucket is provided at a side or forward position of the tip bucket at the frame tip. At the same time, attach the excavation
Rotate the blade to cut through the bulk according to the movement.
It is characterized by the fact that it has been mounted . Also, the configuration of the second invention
Is an L-shaped file consisting of a vertical frame and a horizontal frame.
Frame at the lower end of the elevator column,
Wrap around the sprockets provided at both ends of the
A bucket chain elevator that circulates into the column is installed.
Bucket chain elevator drilling rig
At the side or forward position of the tip bucket at the tip of the
Tilt the protection plate horizontally to prevent the end bucket from collapsing.
It is mounted movably, and the edge-shaped portions are provided at both ends of the protection plate.
It is characterized by having been formed.

A third aspect of the present invention for achieving the above object is to support an L-shaped frame consisting of a vertical frame and a horizontal frame at the lower end of an elevator column, and wind the frame around sprockets provided at both ends of the horizontal frame. In a bucket chain elevator excavator provided with a bucket chain elevator that rotates and circulates into the elevator column,
Side to front position of tip bucket at frame tip
A protection plate to prevent the collapse of the load on the tip bucket
With kicking, characterized in that a rotational load breaking mechanism having a rotating wheel for performing a load break to the frame distal end portion.

[0011]

According to the first and second aspects of the present invention , the vertical frame is swung with respect to the elevator column to move the tip of the horizontal frame to a predetermined position, and the bucket chain elevator is circulated to excavate a bulk load. During excavation movement, blade
The unloading mechanism such as a blade or a cutting edge advances the unloading while breaking the bulk load, and at the same time, the protection plate prevents the breakage of the load on the tip bucket and reduces the resistance of the load on the advancing side.

In the third invention, the vertical frame is swung with respect to the elevator column to move the leading end of the horizontal frame to a predetermined position, and the bucket chain elevator is circulated for excavating bulk loads. During the excavation movement, the rotating wheel is rotated to break the bulk load and unload while proceeding.
At the same time, the protection plate prevents the tip bucket from collapsing.
Block and reduce the resistance of the load on the advancing side .

[0013]

1 is a side view of an essential part of a bucket chain elevator excavator according to an embodiment of the first invention, FIG. 2 is a view taken along the line II-II in FIG. 1, and FIG. 3 is an arrow in FIG. FIG. 4 shows an enlarged view of the part III, and FIG. 4 is a view taken along the line IV-IV in FIG. still,
The same members as those shown in FIG. 11 are denoted by the same reference numerals, and overlapping description is omitted.

As shown in FIG. 1 and FIG.
The support frames 22 are respectively attached to the attachment shafts 21 of the guide sprockets 10, and the rear ends of the support frames 22 are connected by a connection frame 23. A protection plate 24 is provided across the front ends of the support frame 22,
Bucket 1 at the tip of excavation frame 5 by protection plate 24
The upper part of 3 (tip bucket) is covered. Protection plate 24
Each of the two ends is provided with two unloading blades 25. The unloading blades 25 are rotatable around a vertical axis, and are urged to rotate by a predetermined angle toward the distal end. Reference numeral 26 in the drawing denotes a stay that supports the protection plate 24.

As shown in FIGS. 3 and 4, a spring hinge 27 is attached to an end of the protection plate 24, and a hinge shaft 28 that rotates around a vertical axis is provided on the spring hinge 27. A spring 29 is interposed between the spring hinge 27 and the hinge shaft 28, and the hinge shaft 28 is urged to rotate clockwise in FIG. still,
The hinge shaft 28 provided at the opposite end of the protection plate 24 is urged to rotate counterclockwise by the same configuration as in FIG. The unloading blade 25 is fixed to the hinge shaft 28, and the stopper surface 30 of the unloading blade 25 is restricted by the contact surface 31 of the spring hinge 27, and the unloading blade 2
Numeral 5 rotates between a position rotated forward by about 45 degrees and a position substantially parallel to the protection plate 24. The unloading blade 25 is rotationally urged in a state of being symmetrically inclined forward by the rotational urging of the hinge shaft 28 by the spring 29.

In FIG. 2, when the bucket chain elevator excavator moves downward (in the direction of the solid arrow) and performs the unloading operation, the unloading blade 25 on the front side in the traveling direction is inclined forward by the spring force of the spring 29. Therefore, the user moves into the bulk load 14 to break the bulk load 14. The load-carrying blade 25 on the rear side in the traveling direction receives the pressure of the bulk load 14 on its front surface, and the protection plate 2 against the spring force of the spring 29.
4, and no resistance is generated to hinder the movement. In the figure, the unloading blade 25 indicated by a solid line is in an operating state when the excavating part moves in the direction of the solid line arrow, and the unloading blade 25 indicated by a dotted line is in an operating state when the excavating part moves in the direction of the dotted arrow. Is shown. In addition, the protection plate 24 prevents the bulk load 14 from falling into the bucket 13 at the tip end, so that the circulation movement of the bucket chain elevator 12 does not cause resistance due to the collapse of the load.

According to the above configuration, excavation is performed while the bulk load 14 is being cut down by the load breaking blade 25 without using a driving mechanism, and the protection plate 24 prevents the bulk load 14 from falling into the bucket 13 at the tip. be able to. Therefore, even when the bulk load 14 has collapsed, the resistance to the circulating movement of the bucket chain elevator 12 can be reduced.

A second embodiment of the first invention will be described with reference to FIGS. FIG. 5 is a plan view of a principal part of the bucket chain elevator excavator according to the second embodiment, and FIG.
The view from the arrow VI is shown. 11 and FIGS. 1 to 4
The same reference numerals are given to the same members as those shown in FIG.

As shown in FIGS. 5 and 6, brackets 31 are fixed to both ends of the protection plate 24, and a rotation shaft 32 is supported on each bracket 31. The rear end of the unloading blade 25 is fixed to each rotating shaft 32, and a lever 33 is attached to the rear end of each unloading blade 25. The levers 33 are connected by a link member 34. When the upper unloading blade 25 in FIG. 5 rotates forward (to the left in the figure), the lower unloading blade 25 in FIG. 5 becomes substantially parallel to the protection plate 24, and the lower unloading blade 25 in FIG. Is turned forward (to the left in the figure).
The length of the link member 34 is set so that the middle and upper unloading blades 25 are substantially parallel to the protection plate 24.
Reference numeral 35 in FIG. 5 is a stopper that regulates the amount of forward rotation of the unloading blade 25.

In FIG. 5, when the bucket chain elevator excavator moves downward (in the direction of the solid arrow) and is operated for unloading, the unloading blade 25 on the front side in the traveling direction receives the pressure of the bulk load 14 on the rear surface and moves forward. Then, the rotation position is held by the stopper 35 and the bulk load 14 is cut off.
The unloading blade 25 on the rear side in the traveling direction includes a link member 36.
As a result, it is kept substantially parallel to the protection plate 24 and does not become a resistance to the movement of the excavated portion. In the figure, the unloading blade 25 shown by a solid line is in an operating state when the excavation part moves in the direction of the solid arrow, and the unloading blade 25 shown by the dotted line is an operation state when the excavation part moves in the direction of the dotted arrow. The operating state is shown.

According to the above configuration, as described above, the bulk load 1 is moved by the load breaking blade 25 without using a driving mechanism.
Excavation can be performed while performing the cutting of 4,
Resistance to the circulating movement of the bucket chain elevator 12 can be reduced.

An embodiment of the second invention will be described with reference to FIGS. FIG. 7 is a side view of a main part of the bucket chain elevator excavator according to this embodiment, and FIG.
The line VIII is indicated by an arrow. Note that the same members as those shown in FIG. 11 are denoted by the same reference numerals, and redundant description is omitted.

As shown in FIG. 7 and FIG.
The support frames 42 are respectively attached to the attachment shafts 41 of the guide sprockets 10, and the rear ends of the support frames 42 are connected by a connection frame 43. A sliding rod 44 is slidably supported in each support frame 42 in the front-rear direction (left-right direction in the drawing).
5 is slidably driven. Both ends of a protection plate 46 are rotatably supported at the tip of each sliding rod 44 via a vertical axis 48, and a blade-shaped portion 47 is formed at both ends of the protection plate 46. When the sliding rod 44 is slidably driven by driving the cylinder 45, the protection plate 46 is tilted.

In FIG. 8, when the bucket chain elevator excavator is moved downward (in the direction of the solid arrow) to perform the unloading operation, the cylinder 45 on the front side in the traveling direction is extended and the protection plate 46 is tilted. The blade-shaped portion 47 of the protection plate 46 cuts the bulk load 14 as it advances, and the bulk load 14 is sent to the circulation line of the bucket chain elevator 12 and discharged along the slope of the protection plate 46 as the excavation section advances.
When the excavated part moves in the opposite direction (the direction of the dotted arrow), the protection plate 46 is tilted in the opposite direction (indicated by the dotted line in the figure).

According to the above configuration, excavation can be performed while the bulk load 14 is being cut down by the protection plate 46, so that resistance to the circulating movement of the bucket chain elevator 12 can be reduced, and separate load dumping can be performed. Since there is no need to provide a blade, the configuration is simple.

An embodiment of the third invention will be described with reference to FIGS. FIG. 9 is a side view of a main part of a bucket chain elevator excavator according to an embodiment of the third invention, and FIG. 10 is a view taken along line XX in FIG. Note that the same members as those shown in FIGS. 1 and 2 are denoted by the same reference numerals, and redundant description is omitted.

As shown in FIGS. 9 and 10, a rotary shaft 54 is provided at the tip of the support frame 22 via a bearing 51, and the rotary shaft 54 outside the support frame 22 is provided.
Is mounted with a loading wheel 52 as a rotating wheel. A sprocket 55 is attached to the rotating shaft 54 inside the support frame 22, and an interlocking chain 56 is wound around the sprocket 55 between the sprocket 55 and the guide sprocket 10. In other words, the circulation movement of the bucket chain elevator 12 causes the guide sprocket 1
By rotating 0, the rotating shaft 54 rotates through the interlocking chain 56 and the sprocket 55, the unloading wheel 52 rotates, and the guide sprocket 10, the interlocking chain 5
6, a sprocket 55, a rotating shaft 54, and a loading wheel 52 constitute a rotating loading mechanism.

In FIG. 10, when the bucket chain excavator is moved downward (in the direction of the solid line arrow) to carry out the unloading operation, the unloading wheel 52 rotates with the circulation movement of the bucket chain elevator 12, and the load on the front side of the advance is moved. The breakage wheel 52 breaks the bulk load 14. At this time, the unloading wheel 52 on the rear side proceeds with a small resistance while rotatingly engaging with the bulk load 14 at a shallow depth. Similarly, when the excavation part moves in the opposite direction (the direction of the dotted arrow), the excavation wheel 52 breaks down the bulk load and proceeds.

According to the above configuration, excavation can be performed while the bulk load 14 is being broken down by the load breaking wheel 52, and resistance to circulating movement of the bucket chain elevator 12 can be reduced. still,
In the above configuration, when the protection plate 24 is not provided, the ends of the support frames 22 may be connected to each other with a connecting member to perform reinforcement.

[0030]

According to the bucket chain elevator excavator of the present invention, a load unloading mechanism for unloading is also provided, which also serves as a protection plate for preventing load collapse, so that excavation can be performed while cutting bulk loads. It is possible to prevent the bulk load from falling into the tip bucket. As a result,
Resistance to circulation movement of the bucket chain elevator can be reduced.

Further, the bucket chain elevator excavator of the present invention is provided with a rotating unloading mechanism having a rotating wheel for unloading, so that excavation can be performed while the bulk load is being broken down by the rotating wheel. As a result, resistance to the circulating movement of the bucket chain elevator can be reduced.

Accordingly, the overload applied to the excavation portion can be reduced, the resistance during operation can be reduced, the interruption and slowdown of operation, and the damage to the equipment can be reduced, and the efficiency of unloading operation can be improved.

[Brief description of the drawings]

FIG. 1 is a side view of a main part of a bucket chain elevator excavator according to an embodiment of the first invention.

FIG. 2 is a view taken along line II-II in FIG.

FIG. 3 is an enlarged view of an arrow III part in FIG. 2;

FIG. 4 is a view taken along the line IV-IV in FIG. 3;

FIG. 5 is a plan view of a main part of a bucket chain elevator excavator according to a second embodiment of the first invention.

FIG. 6 is a view taken along the line VI-VI in FIG. 5;

FIG. 7 is a side view of a main part of a bucket chain elevator excavator according to one embodiment of the second invention .

FIG. 8 is a view taken along line VIII-VIII in FIG. 7;

FIG. 9 is a side view of a main part of a bucket chain elevator excavator according to one embodiment of the third invention.

FIG. 10 is a view taken along line XX in FIG. 9;

FIG. 11 is a side view of a conventional bucket chain elevator excavator.

[Explanation of symbols]

 5 Excavation Frame 10 Guide Sprocket 12 Bucket Chain Elevator 13 Bucket 14 Bulk Load 22 Support Frame 24 Protective Plate 25 Unloading Blade 42 Support Frame 44 Sliding Rod 45 Cylinder 46 Protective Plate 47 Blade Tip 52 Unloading Wheel 54 Rotating Shaft 55 Sprocket 56 interlocking chain

──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Teruhisa Kobayashi 1 Kimitsu, Kimitsu-shi, Chiba Nippon Steel Corporation Kimitsu Works (72) Inventor Kokichiro Inoue 20-1 Shintomi, Futtsu-shi, Chiba New Nippon Steel Corporation Technology Development Division (56) References JP-A-5-201552 (JP, A) JP-A-58-52123 (JP, A) 57-103933 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B65G 67/60-67/62

Claims (3)

(57) [Claims] 1. An L-shaped frame comprising a vertical frame and a horizontal frame is supported at a lower end of an elevator column,
In a bucket chain elevator excavator equipped with a bucket chain elevator that wraps around sprockets provided at both ends of a horizontal frame and circulates into an elevator column, a side to a front of a tip bucket at a frame tip is provided.
In position, preparative protective plate to prevent the collapsing of the leading bucket
At the same time, on both sides of the protection plate,
The blade for breaking the bulk load is rotatably mounted
A bucket chain elevator excavator characterized by being worn . 2. An L-shaped frame comprising a vertical frame and a horizontal frame is supported at a lower end of the elevator column,
In the bucket chain elevator drilling device provided with a bucket chain elevator circulated into the elevator column wound in a sprocket provided at both ends of the horizontal frame, the side or front of the leading bucket of definitive Frame tip
Position the protection plate to prevent the tip bucket from collapsing with water.
Attach it freely in the horizontal direction and attach it to both ends of the protection plate.
A bucket chain elevator excavator, wherein a cutting edge portion is formed . 3. A vertical frame and a horizontal frame.
Support the L-shaped frame at the lower end of the elevator column,
Wound around the sprockets provided at both ends of the horizontal frame
Bucket elevator that circulates through the elevator column
Chain elevator drilling rig equipped with
Side to front of the tip bucket at the tip of the frame
At the position, install a protection plate to prevent the load from falling into the tip bucket.
At the same time as unloading the front end of the frame.
It is characterized by a rotating unloading mechanism equipped with a rolling wheel
And bucket chain elevator drilling rig.