JP4109794B2 - Asphalt compound silo vertical transfer device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vertical conveying device for an asphalt mixture silo for temporarily storing asphalt mixture used as a road pavement material.
[0002]
[Prior art]
The asphalt composite silo vertical transport device has a guide rail installed on a frame that extends from the ground surface to the material inlet at the top of the silo body, and the composite transport bucket is raised and lowered by the winch along the guide rail. As described in Japanese Utility Model Publication No. 60-33130, the bucket has a gate structure in which one end of the gate is pivotally supported and opened and closed by pivoting about the pivotal support. In order to move the bucket for a long distance, the gate is always pressed and urged in the closing direction by a cylinder that is compressed and compressed with an elastic body such as a coil spring, and this bucket reaches the material inlet at the top of the silo body. Then, the roller disposed under the gate is guided to the guide rail, and the gate is opened against the coil spring of the cylinder so that the asphalt mixture is discharged.
[0003]
[Problems to be solved by the invention]
However, in the conventional gate structure in which the gate is pivotally supported on one end side and opened and closed as in the conventional case, the cylinder using the coil spring is used in order to support the weight of the asphalt composite material and the gate charged in the bucket with the force of the cylinder. The size is considerably large and the cost is high, and the weight is considerable and the burden on the winch and the wire is large.
[0004]
An object of the present invention is to provide a vertical conveyance device for an asphalt composite silo in which the gate opening / closing mechanism of the bucket is simplified to reduce the cost.
[0005]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention provides a guide rail on a frame that extends from the ground surface to a material inlet at the top of the silo body, and a roller that rotates in sliding contact with the sliding surface of the guide rail. In an asphalt composite silo vertical transfer device that lifts and lowers a rope by forward and reverse rotation of a winch, the bucket gate has a double-opening structure with a two-part gate, and the upper end of each gate The gates are pivotally supported by the buckets, and the gates are connected via link members so as to open and close in conjunction with each other, and the gates are kept closed by their own weights. while while the side disposed a pressing means which always presses and biases the gate only in the closing direction at a predetermined pressure, disposing the rotatable gate rollers to the gate lower portion of this one, the difference B is the upper body of the material inlet upper disposed a guide rail for opening one of the gates against the pressure of the pressing means to induce the gate roller, the link member with the opening of the one of the gates And the other gate is also opened .
[0006]
Further, the pressing means is a gas spring filled with high-pressure gas.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
In the asphalt composite silo vertical transfer apparatus according to the present invention, the gate of the bucket has a double-divided structure of the gate divided into two, and the upper end of each gate is pivotally supported by the bucket and each gate is Since they are connected via link members so as to open and close in conjunction with each other, when the bucket is in a horizontal posture, the closed state is maintained by the weight of the gate, and the gate is pressed. Therefore, a sufficient closed state can be maintained only by pressing and urging in the closing direction with a force that is not so large.
[0008]
In addition, when asphalt composite material is mounted on a bucket and raised, the bucket as a whole inclines and the gate also inclines.At this time, the gate located below tries to open by its own weight, and the gate located above by its own weight. In order to close, the gate is balanced by the link material connecting both gates, making it difficult for the gate to rotate. By pressing the gate in the closing direction with a little force by the pressing means, Sufficient closed state can be maintained. When the bucket reaches the upper part of the material inlet of the silo body, the gate roller is guided by the guide rail, and one gate is rotated in the opening direction against the pressing force of the pressing means. Rotate the gate in the opening direction to pay out the asphalt mixture.
[0009]
In this way, if the bucket gate has a double-split double-open structure and the gates are interlocked with each other in the opposite direction by the link material, the closed state can be sufficiently maintained by a small pressing means, and the structure is simplified. Cost is also reduced.
[0010]
If a gas spring filled with high-pressure gas is used as the pressing means, this gas spring is small and lightweight and exhibits a sufficient function, and the price is low enough to be disposable, thus reducing the cost. I can plan.
[0011]
【Example】
Hereinafter, an embodiment of a vertical conveying apparatus for an asphalt composite silo according to the present invention will be described with reference to the drawings.
[0012]
1 in the figure is a silo body placed on a pedestal 2, which temporarily stores an asphalt mixture of about 160 ° C. manufactured by an asphalt plant (not shown), and has a heat insulation structure, with a material at the top. The inlet 3 has a material outlet 4 at the bottom.
[0013]
Reference numeral 5 denotes a vertical transfer device, in which a frame 6 is installed from the ground surface to the upper part of the silo body 1, and a pair of guide rails 7 having a substantially U-shaped inner surface as sliding surfaces are opposed to the frame 6. And disposed along the longitudinal direction of the frame 6. The guide rail 7 is provided with a bucket 9 in which a roller 8 slidably in contact with the sliding surface is rotatably arranged. One end of the rope 10 is fastened to the bucket 9 and the other end. Is wound around the winch 12 via the pulley 11, and the rope 10 is wound and unwound by forward / reverse rotation of the winch 12 to raise and lower the bucket 9 along the guide rail 7.
[0014]
The bucket 9 has a material inlet 13 at the top and a discharge port 14 at the bottom. The lower discharge port 14 has two substantially fan-shaped gates that are divided into two gates that open and close the discharge port 14. A double-open structure is formed by the shaped gates 15 and 15 ′, and upper ends of the gates 15 and 15 ′ are pivotally supported by pivot pins 16 and 16 ′ fixed to the side wall of the bucket 9. Further, link arms 17 and 17 'are formed on the gates 15 and 15' and connected by a link member 18, and the gates 15 and 15 'can be opened and closed in conjunction with each other in the opposite direction by the link member 18. It is said.
[0015]
Since the gates 15 and 15 'have a double-opening gate structure as described above and are opened and closed in conjunction with each other by the link member 18, when the bucket 9 is in the horizontal posture, 15 'is closed by its own weight, and when the bucket 9 is tilted by raising and lowering, the lower gate 15 tries to rotate in its opening direction by its own weight, while the upper gate 15' is closed by its own weight. However, the gates 15 and 15 'are difficult to rotate because of the balance between the link members 18 connecting the two gates, and the gates 15 and 15' are inclined. It is a structure that is unlikely to be open to large.
[0016]
Reference numeral 19 denotes a gas spring as an embodiment of a pressing means for pressing one of the gates 15 and 15 ′ in the closing direction. One end of the cylindrical body 20 filled with high-pressure gas is placed at an appropriate position on the side wall of the bucket 9. In addition to being axially attached, the tip of the piston rod 21 is axially attached to the protruding piece 22 of the gate 15 so as to be able to appear and retract in the cylindrical body 20.
[0017]
As shown in FIG. 3, the gas spring 19 is divided into a gas chamber 24 and an oil chamber 25 by a slidable free piston 23 in the cylinder 20, and the gas chamber 24 has a high-pressure gas such as nitrogen. The oil chamber 25 is filled with oil, and a piston 26 having a piston rod 21 fixed therein is slidably mounted in the oil chamber 25. The high pressure gas in the gas chamber 24 constantly pressurizes the oil chamber 25 with a constant pressure via the free piston 23, and constantly urges the piston rod 21 in the extending direction. A small gas spring 19 having a repulsive force in the extending direction due to such gas pressure is inexpensive and can be disposable in terms of price.
[0018]
A gate roller 27 is rotatably attached to both sides of the gate 15 and is disposed above the material charging unit 3 when the bucket 9 ascends above the material charging unit 3 above the silo body 1. The gate roller 27 is guided by a substantially mountain-shaped guide rail 28 and lifted upward to rotate one gate 15 in the opening direction against the gas pressure of the gas spring 19, and at the same time via the link member 18. The other gate 15 ′ is also rotated in the opposite opening direction to open the discharge port 14 of the bucket 9.
[0019]
Thus, when the asphalt composite material is transported by the vertical transport device, the asphalt composite material manufactured by the asphalt plant is put into the bucket 9 that is kept waiting at the lower portion of the frame 6 of the vertical transport device. The bucket 9 is in a horizontal state when the mixture is put in, and the gates 15 and 15 'are suspended by the pivot pins 16 and 16' at the upper end of the gate, and the gate is applied even when the weight of the asphalt mixture is applied. 15 and 15 ′ are naturally closed, and in addition to this, one gate 15 is pressed and biased in the closing direction by the gas spring 19, and the other gate 15 ′ is also closed via the link member 18. The gates 15 and 15 'are maintained in a sufficiently closed state because they are biased in the direction.
[0020]
Then, when the winch 12 is driven to wind up the rope 10 and the bucket 9 is pulled up along the guide rail 7, the bucket 9 is inclined and the lower gate 15 is rotated in the opening direction by its own weight. On the other hand, the upper gate 15 ′ tries to turn in the closing direction by its own weight, but the gates 15 and 15 ′ are difficult to turn because they are balanced by the link member 18 connecting both gates. Therefore, it is unlikely that the bucket 9 will be opened greatly just because the bucket 9 is inclined, and the gates 15, 15 ′ are pressed by the gas spring 19 in the closing direction. Sufficient closed state is maintained.
[0021]
In this state, the bucket 9 further rises, moves to the upper part of the silo body 1, and reaches the position where the discharge port 14 of the bucket 9 faces the material inlet 3 on the upper part of the silo body 1, the gate roller attached to one gate 15. 27 is guided upward by a guide rail 28 disposed on the track, lifted upward, and rotated in the opening direction against the gas pressure of the gas spring 19 biased and pressed in the closing direction. Then, the other gate 15 ′ also rotates in the opening direction via the link member 18, opens the discharge port 14 of the bucket 9, and pays out the asphalt mixture to the material input port 3.
[0022]
When the asphalt mixture is completely dispensed, the winch 12 is reversed and the bucket 9 is lowered by its own weight, so that the gates 15 and 15 ′ return to the closed position by their own weight and the pressing force of the gas spring 19, and the inclined posture Even if it is lowered at, it returns to the original standby position while maintaining a sufficiently closed state as described above.
[0023]
In this way, even when the bucket 9 is in a horizontal state or an inclined state, the gates 15 and 15 'do not apply much force in the opening direction. However, a sufficiently closed state can be maintained, the pressing means can be reduced in size, the bucket weight can be reduced, the structure can be simplified, and the cost can be reduced. Further, if the bucket weight is reduced, the burden on the winch 12 and the rope 10 can be reduced and the life of the parts can be extended. Further, if the gas spring 19 is used as the pressing means, there is a small and lightweight, smooth expansion and contraction operation, the function can be sufficiently exerted, and the price is low enough to be disposable, further reducing the cost. I can plan.
[0024]
In the above embodiment, the gas spring 19 is described as an example of the pressing means that presses and biases the gates 15 and 15 'in the closing direction. However, a coil spring or a small pneumatic cylinder is used instead of the gas spring. You can also.
[0025]
【The invention's effect】
According to the vertical conveying apparatus for asphalt composite silo according to the present invention, the gate of the bucket has a double-open structure with two-divided gates, and the upper end of each gate is pivotally supported by the bucket, and each gate the linked via a link member so as to open and close conjunction with the reciprocal directions, a configuration in which closed state is maintained by the self-weight of each gate, on one side of the gate at a predetermined pressure the gate closing direction only A pressing means for always pressing and urging is provided, and a rotatable gate roller is provided at the lower end of this gate, while the gate roller is guided above the material inlet at the top of the silo body. Since the guide rail that opens one gate against the pressure of the pressing means is arranged , and the other gate is also opened via the link material when the one gate is opened , the bucket Horizontal state Even in the tilted position, the gate does not receive much force in the opening direction, and if it is pressed and urged by a small pressing means with a force that is not so large in the closing direction, a sufficient closed state can be maintained and the structure can be maintained. It can be simplified and the cost can be reduced.
[0026]
In addition, if a gas spring filled with high-pressure gas is used as the pressing means, the gas spring is small and lightweight and fully functions, and the price is low enough to be disposable, thus reducing the cost. .
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of an asphalt composite silo vertical transfer apparatus according to the present invention.
FIG. 2 is an enlarged view of a main part of FIG.
FIG. 3 is a partially cutaway view of a gas spring.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Silo main body 3 ... Material insertion port 5 ... Vertical conveyance apparatus 6 ... Frame 7 ... Guide rail 8 ... Roller 9 ... Bucket 10 ... Rope 12 ... Winch 15, 15 '... Gate 16, 16' ... Pivot pin 18 ... Link material 19 ... Gas spring 20 ... Tube 23 ... Piston rod 27 ... Gate roller 28 ... Guide rail

Claims (2)

A guide rail is disposed on a frame that extends from the ground surface to the material inlet at the top of the silo body, and a bucket in which a roller that is slidably rotated with the sliding surface of the guide rail is disposed. In the vertical transport device of the asphalt composite silo that moves up and down by winding and unwinding, the gate of the bucket has a double-open structure with a two-part gate, and the upper end of each gate is pivotally supported on the bucket, Each gate is connected via a link material so as to open and close in conjunction with each other, and the closed state is maintained by the weight of each gate. The gate is closed at a predetermined pressure on one side of the gate. It disposed a pressing means which always presses and biases only in the direction, while providing the rotatable gate rollers to the gate lower portion of this one, the the silo body upper material inlet upper Induced Torora disposed a guide rail for opening one of the gates against the pressure of the pressing means, through a link member configured to be also other gate opening with the opening of the one of the gates An asphalt composite silo vertical transfer device characterized by that.   The vertical conveying device for asphalt composite silo according to claim 1, wherein the pressing means is a gas spring filled with high-pressure gas.

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