JPS6231123B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drum device for dispensing drain materials such as long paper drains and plastic board drains, which are cast into soft, water-containing ground for dewatering and consolidation.

Generally, the above type of drain material is wound around a drum in the form of a roll, and its tip is fed out, inserted into a hollow mandrel, exposed through the slit at the tip, and with a cone attached, They are now being placed into soft ground. However, when installing the cone,
First, the tip of the drain material is pulled out to some extent from the slit at the tip of the mandrel, and then the cone is attached.The tip of the drain material is then pulled back into the slit and the cone is installed on the tip surface of the mandrel.

As described above, when attaching the cone, it is necessary to temporarily pull back the drain material, but conventionally this operation has been performed manually by rotating the drum in the winding direction.

However, the above-mentioned manual pull-back operation not only makes the work dangerous but also potentially uncertain, and there are other problems such as the drum having to be installed in a place where people can reach it. It was hot.

Additionally, some conventional drum devices always bias the drum in the winding direction;
This cannot be used for temporary pullback like when a cone is attached, and if the torque is still applied even after the cone is attached, there are problems such as damage to the drain material, so improvement is required. It had been.

Furthermore, with conventional drum devices, the amount of drain material taken up was visually checked by the worker, but due to worker inattention or difficulty in visual inspection, it was difficult to always accurately check the amount taken up. This caused inconveniences such as running out of drain material during pouring work and having to redo the work.

The present invention has been made to solve the above problems, and its purpose is to safely and reliably perform the pull-back operation of the drain material, and to accurately grasp the amount of the drain material to be wound up at all times. To provide a drum device for feeding out drain material, which allows the drum device to be installed at any desired position.

An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a barge moored on the sea surface S, and a crane column 2 is erected on top of the barge. Pulleys 3, 3 are attached to the upper end of the crane column 2, and a wire 4 is routed around the pulleys 3, 3. The upper end of a steel pipe 5 that moves up and down along the crane column 2 is locked to the wire 4, and the steel pipe 5 is pulled by appropriately pulling the wire 4 with a winch (not shown).
It is designed to be driven up and down. A mandrel 6 is attached to the lower end of the steel pipe 5,
It is designed to be inserted into and removed from the seabed ground A.

Reference numeral 7 denotes a drum, which can be integrally attached to the rotating shaft 8 with tightening bolts 9 with left and right flanges 7a and 7b fitted, as shown in FIGS. 2 and 3. ing. One friction plate 1 of a friction clutch 10 is attached to the end of the rotating shaft 8.
0a is fixed. 11 is a drive shaft,
Its axis is aligned with the axis of the rotating shaft 8. A spline (not shown) is formed on the outer periphery of the drive shaft 11, and a friction plate 10b is attached to the spline so as to be slidable in the axial direction. It's starting to engage. A large-diameter gear 12 is fixed to the end of the drive shaft 11, and the output shaft 1 of the electric motor 13
It meshes with a small diameter gear 14 fixed to 3a.

Reference numeral 15 denotes a winding amount detection device for the drain material D, which has a detection rod 15a rotatably mounted thereon. The winding amount of the drain material D is detected by interlocking the detection rod 15a, which rotates as the winding amount changes, with a limit switch, for example.

Since this embodiment is configured as described above,
First, the flange part 7b of the drum 7 is removed from the rotating shaft 8, and then the roll-shaped drain material D is attached, and the flange part 7b is fitted onto the flange part 7a, and then tightened with a nut 9 to be integrally attached to the rotating shaft 8. Attach to.

Next, with the clutch 10 disengaged and the drum 7 free, the tip of the drain material D is let out,
The steel pipe 5 and the mandrel 6 are passed through the pulley 16 provided at the upper end of the crane column 2, and pulled out through the slit 6a made at the tip of the mandrel 6 as shown in FIG. 4A. Attach the cone 17 to the section.

When the attachment of the cone 17 is completed, the friction plate 10b of the clutch 10 is slid to remove the friction plate 10.
Press it against a. The drive shaft 11 of the friction plate 10b is constantly rotated by an electric motor 13 via gears 12 and 14, so when the clutch 10 is engaged, the rotation shaft 8 is driven to rotate, rotating the drum 7 in the direction of the arrow, and draining. Pull material b in the winding direction. Along with this, the drain material D that had been pulled out from the slit 6a at the tip of the mandrel 6 is pulled back, and the cone 17 attached to the tip comes into contact with the tip of the mandrel 6, as shown in FIG. 4B.

Simultaneously with the contact of the cone 17, the pullback resistance of the drain material D increases, so that the clutch 10 automatically slips.

When the setting of the drain material D and the cone 17 is completed as described above, the wire 4 is pulled and the mandrel 6 is driven into the seabed ground, and when it reaches a predetermined depth, it is pulled up. When the mandrel 6 is pulled up, the cone 17 and the drain material D remain in the ground, and when the mandrel 6 is pulled out to the seabed surface, the drain material D is cut and the driving work is completed.

Furthermore, since the winding amount detection device 15 is installed in this drum device, when the winding amount of the drain material D decreases, the detection rod 15a rotates to the imaginary line state, and an alarm is issued or the electric motor 13 or stop it.

The effects of the present invention will be listed below.

(1) Since a clutch is interposed between the drum and the prime mover, the drum can be operated in the winding direction only when temporarily pulling back the drain material, such as when attaching a cone.

(2) Since the clutch is composed of two friction plates, even if the drain material is pulled and an overload is applied to the drum, the clutch automatically slips, and there is no risk of damaging the drain material.

(3) Since a device is installed to detect the amount of drain material taken up, the monitoring burden on workers can be reduced and work can be carried out reliably and efficiently.

[Brief explanation of the drawing]

Figure 1 is an overall schematic diagram of the drain material driving device.
Fig. 2 is a longitudinal sectional view of the drain material feeding drum device, Fig. 3 is a sectional view taken along the - line in Fig. 2,
FIG. 4A is a sectional view of the tip of the mandrel with the drain material pulled out, and FIG. 4B is a sectional view of the tip of the mandrel with the cone attached. 7...Drum, 7a, 7b...Flange part, 8
...Rotating shaft, 9...Tightening nut, 10...Friction clutch, 10a, 10b...Friction plate, 11...
Drive shaft, 12...Large diameter gear, 13...Electric motor, 1
3a...Output shaft, 14...Small diameter gear.

Claims (1)

[Claims] 1 In a device consisting of a drum wrapped with a long drain material and a motor that rotates the drum in the winding direction, a friction clutch 10 is installed at the end of a rotating shaft 8 that rotates integrally with the drum 7. One friction plate 10a is fixed to the output shaft 1 of the prime mover 13.
A friction plate 10 that frictionally engages with the friction plate 10a as necessary on the drive shaft 11 rotationally driven by the friction plate 10a.
A winding amount detecting device 15 has a winding amount detecting device 15, in which a winding amount detecting device 15 is slidably mounted on a winding member b, and a sensing rod 15a is rotatably pivoted so that its tip abuts on the winding outer peripheral surface of the drain material D wound around the drum 7. A drain material feeding drum device characterized by being provided with.