JP2017149561A - Lifting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lifting device capable of easily hanging up or hanging down a cutoff gate whose cutoff face is leveled.SOLUTION: A lifting device 10 includes: a cutoff gate 70 having a suspension metal fitting 72 in an opening provided on an upper end face of a gate body, and having a plate-like guide extending along a cutoff face of the gate body; and a lifting beam 20 having hook parts 30 tips of which are each suspended from a lower end face of a beam body 22, and which are fitted to the suspension metal fitting 72. Each hook part 30 includes: a joint 32 rotatable around the shaft of a first pin 24 arranged on the beam body 22 along a direction orthogonal to the longitudinal direction of the lifting beam 20; and a suspension hook 40 rotatable around the shaft of a second pin 34 arranged at the joint 32 along a direction orthogonal to the longitudinal direction of the first pin 24.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a lifting device used for work for attaching / detaching a water stop gate to / from a water channel.

  A dust removing device is installed in a water channel for taking cooling water from an industrial water channel or a power plant. This dust removal device removes the dust in the water channel with a mesh screen, and is a part installed in seawater and river waterways, where the shells and seaweed adhere and the adhering surface crevice corrodes or changes the tide level. Particularly susceptible to corrosion.

  For this reason, the water stop gate which stops a water flow is regularly installed in the water channel of the upstream of a dust removal apparatus, and the maintenance check or maintenance work of a dust removal apparatus is performed. As an example, the water channel in which the dust removing device is installed has a water channel width of 4 to 5 m and a depth of about 10 m. The water stop gate installed in such a water channel has a flat plate shape with a small thickness with respect to the water stop surface (the surface that blocks the flow path when the water stop gate is installed in the gate groove of the water channel), and the depth of the water channel A structure in which the weight per sheet is reduced by dividing into a plurality of parts in the vertical direction facilitates the attachment / detachment work.

  When the water stop gate is attached to the water channel, the crane hook is hooked to the two suspension fittings provided on the end surface in the thickness direction of the water stop gate and then lifted. At this time, a special lifting beam is used to lift the beam so that it can be attached and detached without human intervention by a special hook provided on the beam body. As a result, even when the water stop gate is inserted deeply into the water channel, it can be easily attached and detached from the ground without a person entering the water channel and removing the hook.

  Conventionally, the angle drop (water stop gate) attachment / detachment device disclosed in Patent Document 1 is provided with a weight attachment portion and a locking portion on a hook body that is hooked to a hanging bracket, and the center of gravity of the hook body is the center of rotation of the hook body. The hook body is configured so as to be positioned closer to the closing side than the straight line connecting the rotation center and the concave portion of the locking portion. The weight attaching portion is formed so that the center of gravity when the weight of the hook body is attached is located on the open side of the locking portion from the straight line. As a result, the hanging bracket and the hook can be hooked automatically.

  Further, as a similar work, the hanging tool disclosed in Patent Document 2 in which the screen can be attached to and detached from the water channel lowers the hanging body to bring the connecting bar on the load into contact with the contact portion of the swinging arm of the hanging body. ing. Then, when the hook is rotated around the swing fulcrum and the contact between the connecting bar and the contact part of the swing arm passes, the hook reverses due to the action of the weight, and the hook is hooked on the connecting bar and can be automatically attached and detached. I have to.

Japanese Utility Model Publication No. 64-18086 JP-A-9-151071

In general, a water stop gate in the storage state has a water stop surface stacked horizontally. Such a water stop gate with the water stop surface horizontal and the upper end face provided with the hanging metal fittings sideways faces the side of the opening of the hanging metal fittings. It cannot be hooked only by itself. For this reason, it has been necessary to stand a water stop gate in advance using a lifting crane and to direct the opening of the lifting bracket to the upper surface. A separate lifting crane is required for the work of setting up the water stop gate. And it was difficult to adjust the tension balance between the crane and the lifting beam. Also, it was a work that should be avoided in terms of safety.
In addition, the attachment / detachment device or the hanging tool disclosed in Patent Documents 1 and 2 has an opening of a hanging bracket provided on the upper end surface (a surface along the thickness direction of the water stop gate) with the water stop surface of the water stop gate horizontal. There is no disclosure of hooking a hook in a sideways state.

  Accordingly, in view of the above-described problems of the prior art, the present invention provides a lifting device that makes it easy to lift or suspend a water stop gate in which the water stop surface is horizontal and the upper end surface provided with a suspension fitting is horizontal. It is an object.

As a first means for solving the above-mentioned problems, the present invention provides an opening in the upper end surface of the gate body, has a hanging metal fitting inside, and extends from the peripheral edge of the opening along the water stop surface of the gate body. A water stop gate having a flat plate-shaped guide, and a lifting beam having a hook portion that hangs downward from the lower end surface of the beam main body and fits to the hanging bracket, and the hook portion includes: A joint that can rotate around the axis of the first pin arranged in the beam body along a direction orthogonal to the longitudinal direction of the lifting beam, and an axis of the second pin arranged in the joint along the longitudinal direction of the lifting beam An object of the present invention is to provide a lifting device characterized by having a hanging hook that can rotate around.
According to the first means, the hook is inserted and suspended only by hanging the beam main body into the opening of the suspension fitting on the upper end surface of the water stop gate with the water stop surface horizontal and the upper end surface turned sideways. Since it can be hooked on the metal fitting, it is possible to easily attach and detach the horizontal water stop gate.

As a second means for solving the above-mentioned problem, in the first means, the present invention provides a counterweight rotatable around the axis of the first pin together with the hook portion. An object of the present invention is to provide a lifting device characterized in that an angle between a center line along a direction and a perpendicular passing through the first pin can be arbitrarily set.
According to the second means, when the suspension hook is hooked to the suspension bracket, the urging force is applied in the direction in which the suspension hook approaches the suspension bracket or when the suspension hook is detached from the suspension bracket. Work can be done.

As a third means for solving the above-mentioned problems, in the first or second means, the present invention is characterized in that the suspension hook rotates at least ± 90 degrees with respect to a perpendicular passing through the axis of the second pin. It is an object of the present invention to provide a lifting device characterized in that it is possible.
According to the said 3rd means, it can insert in the opening provided with the hanging fitting of the water stop gate arrange | positioned in the both sides of the front and back of a hanging hook.

As a fourth means for solving the above-mentioned problems, the present invention provides the stopper according to any one of the first to third means, wherein the lifting beam is in contact with the upper end surface of the water stop gate at the lower end surface. It is another object of the present invention to provide a lifting device characterized in that
According to the fourth means, it is possible to prevent the hook portion from coming into contact with the upper end surface of the water stop gate and damaging it while the beam body is suspended.

  According to the present invention, the hook is inserted by the vertical movement of the beam body into the opening of the suspension fitting on the upper end surface of the water stop gate with the water stop surface horizontal and the upper end surface turned sideways, and hooked to the suspension fitting. Therefore, it is possible to easily lift the leveled water stop gate.

It is a front view of the lifting device of the present invention. It is a side view of the lifting device of the present invention. It is explanatory drawing of the water stop gate of a lifting apparatus. It is explanatory drawing of the attachment work of the water stop gate using the lifting apparatus of this invention. It is explanatory drawing of the removal operation | work of the water stop gate using the lifting apparatus of this invention.

  Embodiments of the lifting device of the present invention will be described below in detail with reference to the accompanying drawings.

[Lifting device 10]
FIG. 1 is a front view of the lifting device of the present invention. FIG. 2 is a side view of the lifting device of the present invention.
The lifting device 10 of the present invention has the lifting beam 20 and the water stop gate 70 as main constituent elements.

[Lifting beam 20]
The lifting beam 20 has a beam main body 22, a hook portion 30, a guide roller 50, and a stopper 60 as main components.
The beam main body 22 is a flat plate-like member that can be inserted between the gate grooves installed in the water channel so as to face the upper end surface of the water stop gate 70. The beam main body 22 is provided with a lifting tool 23 that is hooked to a crane hook or a wire of a lifting crane on the upper surface.

The hook portion 30 is a member that hangs down from the lower surface of the beam body 22 and is hooked to the hanging fitting 72 of the water stop gate 70, and includes a joint 32, a hanging hook 40, and a counterweight 45.
The joint 32 is pivotally supported by a first pin 24 having an axis centered on the beam body 22 along the width direction (direction perpendicular to the longitudinal direction) of the beam body 22. When the lifting or hanging direction of the lifting device is the X axis, the longitudinal direction of the beam body 22 is the Y axis, and the direction orthogonal to the X and Y axes is the Z axis, the joint 32 swings around the Z axis. It is possible.

The hanging hook 40 is pivotally supported by a second pin 34 whose axial center is disposed at the tip of the joint 32 along the longitudinal direction of the beam body 22. One end of the hanging hook 40 is pivotally supported by the second pin 34, and the other end is formed in the shape of a hook that can be hooked to the hanging fitting 72. The suspension hook 40 is swingable about the axis (Y axis) of the second pin 34 arranged along the longitudinal direction of the beam body 22. The suspension hook 40 is rotatable at least ± 90 degrees with respect to a normal passing through the axis of the second pin 34. As a result, the suspension hook 40 can be bent on either side of the beam body 22 when viewed from the front.
One end of the counterweight 45 is pivotally supported by the first pin 24, and a weight portion is provided on the other end side. The counterweight 45 can swing around the axis (Z axis) of the first pin 24 together with the joint 32. The counterweight 45 can change the angle between the center line along the longitudinal direction of the main body and the perpendicular passing through the first pin 24 to an arbitrary set angle.

The setting angle of the counterweight 45 is an angle at which the suspension hook 40 is inclined to the opposite side (the end portion side of the beam body 22) to the side where the suspension hook 40 is latched to the suspension fitting 72 with respect to the perpendicular passing through the first pin 24. As an example, it is set to 45 degrees. Thereby, the hook point of the hanging hook 40 can be urged in a direction approaching the hanging bracket 72.
On the other hand, at the time of removal, the angle at which the hanging hook 40 is inclined to the same side (the center side of the beam main body 22) as the side where the hanging hook 40 is hooked to the hanging bracket 72 with respect to the perpendicular passing through the first pin 24 is set to 30 degrees as an example. ing. Thereby, the hook point of the hanging hook 40 can be urged in a direction away from the hanging fitting 72.
Two such hook portions 30 are attached to a position that is line-symmetric with respect to the center of the beam main body 22 and a perpendicular line that passes through the suspension fitting 72 of the water stop gate 70.

The guide rollers 50 are rollers provided at both ends of the beam body 22. The guide roller 50 is provided with rollers on three surfaces facing the three surfaces of the gate groove, and slides in the vertical direction (X-axis direction) of the water channel in contact with the three surfaces of the gate groove.
The stopper 60 is a member that extends from the lower surface of the beam body 22 in a direction orthogonal to the longitudinal direction. The stopper 60 is set to such a length that the tip end surface is fitted between the second pin 34 and the hook point (hook tip).

[Water stop gate 70]
FIG. 3 is an explanatory view of a water stop gate of the lifting device. The water stop gate 70 is a plate-like member that is inserted between the gate grooves of the water channel and blocks the water channel.
In the water stop gate 70 of the present embodiment, a surface that blocks the flow path when the water stop gate is installed in the gate groove of the water channel is a water stop surface, and a surface along the thickness direction of the gate is an end surface. On the upper end surface of the water stop gate 70, an opening 74 having a suspension fitting 72 is provided inside the hole. The hanging bracket 72 is a rod-shaped member having an axis centered along the width direction of the water stop gate 70.
Further, the water stop gate 70 is provided with a guide 76 on the upper end surface. The guide 76 is a flat plate member that extends in the direction orthogonal to the upper end surface from the periphery of the opening 74 on the upper end surface. Such a guide 76 is attached so that the angle formed between the main surface and the upper end surface is a right angle. Thereby, when the water stop surface of the water stop gate 70 is horizontal, the main surface of the guide 76 is also horizontal.

[Action]
A method for lifting and hanging the water stop gate using the lifting device of the present invention will be described below.

FIG. 4 is an explanatory view of a work for attaching a water stop gate using the lifting device of the present invention. FIGS. (1) to (5) show a front view and a side view of the hook portion 30, respectively.
As shown in FIG. 1A, the counterweight 45 is on the opposite side (the end side of the beam body 22) from the side where the suspension hook 40 is hooked to the suspension fitting 72 with respect to the perpendicular passing through the first pin 24. The tilt angle is set to 45 degrees as an example.
As shown in FIG. 2B, when the lifting device is lowered, the tip of the suspension hook 40 of the hook portion 30 comes into contact with the upper surface of the guide 76 of the water stop gate 70 with the water stop surface horizontal.

As shown in FIG. 3C, when the lifting device is further lowered, the suspension hook 40 rotates around the axis of the second pin 34, and the tip of the suspension hook 40 slides on the upper surface of the guide 76 to stop the water. It is inserted into the opening 74 of the gate 70.
As shown in FIG. 4 (4), the tip of the suspension hook 40 contacts the suspension fitting 72, and the suspension hook 40 is pushed out to the gate groove side as shown by the dotted line. At this time, the suspension hook 40 is urged by the counterweight 45 so that the hook point approaches the suspension fitting 72, so that the suspension fitting 72 passes over the hook point and fits in the hook. Then, the stopper 60 and the water stop gate 70 come into contact with each other to stop the descent.
As shown in FIG. 5 (5), when the lifting device is lifted, the water stopping gate 70 with the hanging metal fitting 72 hooked on the hanging hook 40 and leveling the water stopping surface rises and can be lifted.

FIG. 5 is an explanatory view of the work of removing the water stop gate using the lifting device of the present invention. FIGS. (1) to (5) show a front view and a side view of the hook portion 30, respectively.
First, as shown in FIG. 1A, the counterweight 45 is set to an angle at which the suspension hook 40 is inclined to the side opposite to the side where the suspension hook 40 is hooked on the suspension fitting 72 (the end side of the beam body 22), for example, 45 degrees. . Then, the lifting beam 20 of the lifting device is lowered into the water channel. The suspension hook 40 is engaged with the suspension fitting 72 of the water stop gate 70 whose upper end surface is upward.
As shown in FIG. 2B, the counterweight 45 is inclined to the same side (the center side of the beam main body 22) as the side where the suspension hook 40 is hooked to the suspension fitting 72 with respect to the perpendicular passing through the first pin 24. The angle is set to 30 degrees as an example. Then, the lifting device is raised to move the water stop gate to the storage location.

As shown in FIG. 3C, when the water stop surface of the water stop gate 70 is lowered so as to be horizontal in the storage place, the suspension hook 40 rotates around the axis of the second pin 34.
As shown in FIG. 4 (4), when the hook of the suspension hook 40 and the suspension fitting 72 is released, the suspension hook 40 is biased by the counterweight 45 in the direction in which the hook point is separated from the suspension fitting 72. From the latched state indicated by the dotted line, the released state is indicated by the solid line.
As shown in FIG. 5 (5), when the lifting device is raised, the suspension hook 40 is discharged from the opening of the water stop gate 70 and can be removed from the water stop gate 70.
As described above, the lifting device of the present invention has been described with respect to the attachment / detachment work of the water stop gate with the upper end surface facing sideways, but can also be applied to the attachment / detachment work of the water stop gate with the upper end surface facing the upper surface. It is.

  According to such a lifting device of the present invention, the hook is inserted by moving the beam body up and down into the opening of the suspension fitting on the upper end surface of the water stop gate with the water stop surface horizontal and the upper end surface turned sideways. Since it can be hung on a hanging metal fitting, it is possible to easily perform a lifting operation of a horizontal water stop gate.

  The lifting device of the present invention can be industrially used in the field of lifting and transporting a flat plate by lifting means such as a winch or a crane.

............ Lifting device, 20 ...... Lifting beam, 22 ...... Beam body, 23 ...... Lifting tool, 24 ...... First pin, 30 ...... Hook part, 32 ...... Joint, 34 ......... Second pin, 40 ......... Hanging hook, 45 ......... Counter weight, 50 ......... Guide roller, 60 ......... Stopper, 70 ......... Water stop gate, 72 ......... Hanging bracket, 74 ……… Open, 76 ……… Guide.

Claims (4)

A water stop gate having a flat guide extending from the periphery of the opening along the water stop surface of the gate body having an opening on the upper end surface of the gate body and having a hanging metal fitting inside;
A lifting beam having a hook portion that hangs downward from the lower end surface of the beam body and fits to the suspension fitting,
The hook portion is disposed at the joint along the longitudinal direction of the lifting beam, and a joint that is rotatable about the axis of the first pin disposed in the beam body along a direction orthogonal to the longitudinal direction of the lifting beam. A lifting device comprising a hanging hook rotatable around the axis of the second pin.   A counterweight that is rotatable around the axis of the first pin together with the hook portion is provided, and the counterweight can arbitrarily set an angle between a center line along the longitudinal direction and a perpendicular line passing through the first pin. The lifting device according to claim 1.   The lifting device according to claim 1 or 2, wherein the hanging hook is rotatable at least ± 90 degrees with respect to a perpendicular passing through the axis of the second pin.   The lifting device according to any one of claims 1 to 3, wherein the lifting beam is provided with a stopper in contact with an upper end surface of the water stop gate at a lower end surface.

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