JP2652468B2 - Silo hopper mounting method and mounting jig - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for mounting a hopper on a silo and a jig for mounting the hopper.

[0002]

2. Description of the Related Art Conventionally, in the construction of a silo, to mount a hopper, as shown in FIG. 6, the cylindrical outer plate 1 is assembled to a position slightly higher than the position where the hopper is mounted, and then, as shown in FIG. The hopper 2 assembled and manufactured in the factory is lifted by a crane (not shown), dropped into a predetermined height position marked on the inner surface of the cylindrical outer plate 1 as shown by a dashed line, and the outer peripheral edge thereof is set to the cylindrical outer plate 1. Was fixed to the inner peripheral surface by welding.

However, in such a hopper mounting method, even when the outer diameter of the hopper 2 and the inner diameter of the cylindrical outer plate 1 are accurately assembled and manufactured together, the hopper 2 is lifted up and inserted into the cylindrical outer plate 1. When the hopper 2 is dropped, the hopper 2 is deformed by its own weight and becomes deformed, so that the inner peripheral surface of the cylindrical outer plate 1 and the hopper 2
Does not coincide with the outer peripheral edge of the hopper 2, and therefore the inner peripheral surface of the cylindrical outer plate 1 and the outer peripheral edge of the hopper 2 do not fall easily.
It is very time-consuming. Further, even if the hopper 2 is dropped to a predetermined height position in the cylindrical outer plate 1, the hopper 2 is not horizontal, and the outer peripheral edge of the hopper 2 and the inner peripheral surface of the cylindrical outer plate 1 do not adhere to each other. It is difficult to do. Moreover, since the center of the hopper 2 and the center of the cylindrical outer plate 1 are misaligned, the position accuracy of the outlet 3 is poor. More hopper 2
Is provided with a working annular scaffold 4, on which welding work or the like is performed. Therefore, it is necessary to close the discharge port 3 so as not to worry about falling objects.

On the other hand, as a hopper mounting structure which facilitates the dropping of the hopper into the cylindrical outer plate, makes the hopper horizontal, and facilitates the welding of the hopper, Japanese Utility Model Publication No.
Japanese Patent Application Laid-Open No. 9075/1990 proposes.

In this hopper mounting structure, as shown in FIG. 8, an annular support plate 5 inclined toward the center is provided horizontally on a cylindrical outer plate 1 of a silo, and has a diameter smaller than the inner diameter of the cylindrical outer plate 1 thereon. The hopper 6 having a discharge guide surface having a diameter larger than the inner diameter of the annular support plate 5 and having substantially the same inclination angle as the annular support plate 5 is horizontally supported and fixed by welding.

Incidentally, such a hopper mounting structure requires the annular support plate 5, which requires both mounting and dimensional accuracy, which is extremely troublesome and troublesome. Further, even if the hopper 6 can be made horizontal, the center of the cylindrical outer plate 1 and the center of the hopper 6 are misaligned, so that the positional accuracy of the outlet 3 is still poor. Further, the hopper 6 is provided with a working annular scaffold 4, on which welding work or the like is performed. Therefore, it is necessary to close the discharge port 3 so as not to worry about falling objects.

[0007]

SUMMARY OF THE INVENTION Therefore, according to the present invention, the dropping of the hopper into the cylindrical outer plate can be facilitated, the hopper can be leveled, the work of mounting the hopper can be facilitated, and the center of the silo can be easily moved. An object of the present invention is to provide a hopper mounting method and a mounting jig for a silo capable of aligning the center of the hopper and closing an outlet of the hopper when the hopper is mounted.

[0008]

According to the present invention, there is provided a method for mounting a hopper on a silo according to the present invention, comprising the steps of: Is provided, an adjuster bolt is attached to the tip end surface of each arm, a column is erected at the center of the cross-shaped frame, and a hopper receiver having a conical head is supported on the column so that the height can be adjusted. A hopper mounting jig provided with a length-adjustable brace between the tip of the arm and the hopper mounting jig is installed inside the cylindrical outer plate of the silo, and the center of the hopper mounting jig is positioned at the center of the cylindrical outer plate. Fix the upper hopper mounting jig by adjusting the arm at the tip of each side of the cross-shaped frame and the adjuster bolt, then adjust the height of the hopper mounting jig to the hopper mounting level with the hopper receiver. The hopper is suspended in the cylindrical outer plate with a crane and dropped, and the discharge port of the hopper is fitted to the conical head of the hopper receiver and supported by the upper hopper receiver for centering. Thereafter, the outer peripheral edge of the hopper is fixed to the inner peripheral surface of the cylindrical outer plate of the silo by welding.

The jig for mounting a hopper of a silo according to the present invention is provided with a slidable and fixable arm at the tip of each side of a cross-shaped frame provided with casters on the lower surface, and an adjuster attached to the tip of each arm. A bolt is attached, a column is erected at the center of the cross frame, and a hopper receiver having a conical head is supported on the column so that the height can be adjusted. A length is set between the hopper receiver and the tip of each of the arms. An adjustable brace is provided.

[0010]

As described above, in the silo hopper mounting method of the present invention, the hopper mounting jig is installed in the cylindrical outer plate of the silo, and the center of the hopper mounting jig is set at the center of the cylindrical outer plate. Fix the cruciform frame by adjusting the arm at the tip of each side and the adjuster bolt, and adjust the height of the hopper receiver supported on the center column to the hopper mounting level and fix it. When the hopper is hung in the cylindrical outer plate and dropped, the discharge port of the hopper is guided by the conical head of the hopper receiver in the hopper mounting jig, descends, and fits into the base of the conical head. Since it is placed in the hopper receiver, it is easy to drop the hopper into the cylindrical outer plate, and the center of the hopper automatically matches the center of the cylindrical outer plate, and the hopper is placed on the hopper mounting jig. Humbly it is supported. Moreover, since the outlet of the hopper is closed by the hopper receiver, there is no fear of falling objects during welding work. Furthermore, since the hopper is centered on the cylindrical outer plate and supported horizontally as described above, the outer peripheral edge of the hopper is in close contact with the circumferential surface of the cylindrical outer plate, and the welding operation can be facilitated.

The hopper mounting jig of the present invention has an adjustable outer dimension and height dimension. Therefore, even if the diameter of the silo to be built is changed or the mounting level of the hopper is changed, the hopper mounting jig is not affected. Compatible and versatile. Moreover, according to the hopper mounting jig of the present invention, the hopper dropped into the cylindrical outer plate can be securely held securely, and it is necessary to suspend and support the hopper with a crane until the hopper mounting is completed as in the conventional case. Absent.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for mounting a silo hopper and a mounting jig according to the present invention will be described. First, a hopper mounting jig used for the hopper mounting method will be described with reference to the drawings. As shown in FIGS. 1 and 2, casters 12 are provided below each side 11 of a cross-shaped frame 10 so that the jig can be moved. The arm 13 is slidably inserted into the tip of each side 11 and is fixed by a tightening bolt 14 on the outer surface. An adjuster bolt 15 is attached to the distal end surface of the arm 13 on each side 11. A column 16 is erected at the center of the cross-shaped frame 10, and a hopper receiver 18 having a conical head 17 is inserted into the upper portion of the column 16 so as to be able to move up and down, and is fixed by a fastening bolt 19 on the outer surface. It has become. Brackets 20, 2 are provided on the outer surface of the hopper receiver 18 and the upper surface of the tip of each arm 13, respectively.
1 is provided, and a brace 22 having an adjustable length is provided between the brackets 20 and 21. The length adjustable braces 22 slidably insert a square pipe 23 whose upper end is pivotally supported by the bracket 20 into a square pipe 24 whose lower end is pivotally supported by the bracket 21. It is designed to be fixed by tightening bolts 25.

Next, a hopper mounting method using the hopper mounting jig 26 constructed as described above will be described with reference to the drawings. First, as shown in FIG.
Is assembled and installed in the cylindrical outer plate 1 of the silo. Next, the center of the hopper mounting jig 26 is matched with the center of the cylindrical outer plate 1. That is, the arms 13 on each side 11 of the cross-shaped frame 10 are evenly slid forward by a required amount and fixed by the tightening bolts 14. When the adjuster bolt 15 on the distal end surface of each arm 13 is extended and fixed to the inner surface of the cylindrical outer plate 1, the center of the hopper mounting jig 26 coincides with the center of the cylindrical outer plate 1. Next, the tightening bolt 2 of the braid 22 whose length is adjustable.
With the 5 loosened, the hopper receiver 18 at the top of the column 16 is slid upward by loosening the tightening bolt 19 and stopped at a position corresponding to the lower end of the exhaust port of the hopper corresponding to the hopper mounting level. The hopper receiver 18 is fixed by tightening the bolt 19. By adjusting the height of the hopper receiver 18, the length of the brace 22 is extended, that is, the square pipe 23 is
4 slides inside and extends a predetermined amount outward, so tightening the tightening bolt 25 to support the hopper receiver 18
Is fixed. Next, as shown in FIG. 4, the hopper 2 is hung by the hanging wire 27 of the crane into the cylindrical outer plate 1 and dropped, and the discharge port 3 of the hopper 2 is connected to the conical head of the hopper receiver 18 as shown in FIG. Guided to 17 and descended,
When fitted to the base of the conical head 17 and placed on the hopper receiver 18, the center of the hopper 2 automatically matches the center of the cylindrical outer plate 1, and the hopper 2 is placed horizontally on the hopper mounting jig 26. Supported by Thereafter, the outer peripheral edge of the hopper 2 is fixed to the inner peripheral surface of the cylindrical outer plate 1 by welding. This welding work
As described above, the hopper 2 is centered on the cylindrical outer plate 1 and is horizontally supported on the hopper mounting jig 26 so that the outer peripheral edge of the hopper 2 is in close contact with the inner peripheral surface of the cylindrical outer plate 1.
It can be done easily. The welding operation is performed on the working annular scaffold 8 provided on the hopper 2.
Since the discharge port 3 is placed on the hopper receiver 18 and closed, there is no fear of falling objects during operation. After the mounting of the hopper 2 is completed, the hopper mounting jig 26 is disassembled on the spot, brought into the cylindrical outer plate 1 of another silo, and assembled and installed.
Used for mounting the hopper 2 in the same manner as described above.

The conical head 17 on the hopper receiver 18 of the hopper mounting jig 26 is attached and detached with bolts or the like so that the conical head 17 can be appropriately replaced with one corresponding to the diameter of the discharge port 3 of the hopper 2. Can be made possible.

[0015]

As described above, according to the method of attaching a hopper to a silo of the present invention, it is easy to suspend and drop the hopper into the cylindrical outer plate of the silo, and to center the hopper on the center of the cylindrical outer plate. The hopper can be aligned and the hopper can be supported horizontally, and the outer peripheral edge of the hopper can be in close contact with the inner peripheral surface of the cylindrical outer plate. Therefore, the welding operation is easy, and the hopper can be mounted with high accuracy. In addition, since the discharge port of the hopper is closed during welding work, there is no fear of falling objects and the hopper is safe.

According to the hopper mounting jig of the present invention, the above-mentioned hopper mounting method can be carried out smoothly, and the outer dimensions and height dimensions can be adjusted. Even if the mounting level changes, it can cope with this and is versatile. Further, the hopper mounting jig of the present invention can securely hold the hopper dropped into the cylindrical outer plate securely, and does not need to suspend the hopper with a crane until the hopper is mounted as in the conventional case. .

[Brief description of the drawings]

FIG. 1 is a front view of a hopper mounting jig according to the present invention.

FIG. 2 is a plan view of a hopper mounting jig according to the present invention.

3 to 5 are views showing steps of a method for attaching a hopper to a silo according to the present invention.

6 and 7 are views showing steps of an example of a conventional silo hopper mounting method.

FIG. 8 is a view showing another example of the conventional silo hopper mounting method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylindrical outer plate 2 Hopper 3 Discharge port 10 Cross-shaped frame 11 Each side 12 Caster 13 Arm 15 Adjuster bolt 16 Column 17 Conical head 18 Hopper receiver 22 Bracing 26 Hopper mounting jig

Claims (2)

(57) [Claims] An arm is slidably and slidably provided at an end of each side of a cross-shaped frame having casters on a lower surface, and an adjuster bolt is attached to the end surface of each arm.
A column is erected at the center of the cross frame, and a hopper receiver having a conical head is supported on the column so that the height can be adjusted. The length can be adjusted between the hopper receiver and the tip of each of the arms. A hopper mounting jig provided with a brace is installed inside the cylindrical outer plate of the silo, and the center of the hopper mounting jig is centered on the center of the cylindrical outer plate and the arm and adjuster at the tip of each side of the cross-shaped frame Fix the upper hopper mounting jig by adjusting the bolt, then adjust the hopper receiver of the hopper mounting jig according to the hopper mounting level, adjust the height, and then fix the hopper out of the cylinder with a crane. Hang it into the plate and drop it, fit the outlet of the hopper into the conical head of the hopper receiver, support the centered hopper receiver, and then attach the outer edge of the hopper to the cylindrical outer plate of the silo. By welding on the inner peripheral surface Hopper mounting method of the constant to silo. 2. A slidable and fixable arm is provided at an end of each side of a cross-shaped frame provided with casters on a lower surface thereof,
An adjuster bolt is attached to the end surface of each arm, a column is erected at the center of the cross-shaped frame, and a hopper receiver having a conical head is supported on the column so that the height can be adjusted. A hopper mounting jig provided with a brace that can be adjusted in length between the tip of the hopper.