JP2002046615A - Material transporting dolly - Google Patents

Abstract

PROBLEM TO BE SOLVED: To feed a water leakage cutoff material such as waste certainly near to the place where water leakage is generated. SOLUTION: Wheels 30 of a dolly A for sinking a water leakage cutoff material along the wall surface of the door plate 4 of a flood discharge gate in the hung-down condition are made of magnetic substance, and the water leakage cutoff material is fed certainly near to the place where water leakage is generated by the attracting force generated between the wheels 30 and the door plate 4 made of steel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a trolley for material transportation,
More specifically, it relates to a magnetically attractable material transport trolley, which is used, for example, to transport water-stopping materials to the location of a leak at a spillway gate of a dam, and to wash and inspect ships, culverts, and other steel structures. Can also be used.

[0002]

2. Description of the Related Art In a dam such as a hydroelectric power plant, a spillway gate is installed for the purpose of adjusting the amount of water stored in the dam. When the spillway gate is shut off, in order to prevent water leakage from the lower end of the gate, water-stop materials such as waste cloth and earth and sand are injected into the leak point, and the water-stop material is sent along with the water flow to the leak point at the lower end of the gate to shut off the leak. I am trying to do it.

FIG. 5 is a cross-sectional view of a spillway gate for explaining a conventional water leakage blocking operation. A door body 4 that is curved convexly toward the upstream side of a dam is provided around a rotation shaft 9. It is mounted so that it can swing up and down. When the spillway gate is completely closed, the worker 10 operates the hoisting device 2 to fix the fixing fitting 13 provided at the lower end of the door 4.
Pay out the wire rope 3 whose one end is locked,
As a result, the door body 4 is lowered until its bottom end contacts the gate bottom 7.

[0004] Even after the door body 4 reaches the lower end in this way, a gap is left between the door body 4 and the gate bottom 7 due to the inflow of driftwood or earth and sand. Water 8 may erupt.

[0005]

The water leak 8 from the spillway gate is not only unpleasant for a third party but also unfavorable for maintaining the aesthetic appearance of the dam.

Therefore, when such a water leakage phenomenon occurs, as shown in FIG. 5, a worker 10 attaches the weight 5 and the waste 6 to the tip of the rope 1 and then pays out the rope 1 to leak the waste 6. 8 near the spout point,
The waste 6 was thrown in from the front side of the spillway gate toward the location where water leakage occurred, and the waste 6 was drawn into the location where water leakage occurred using the suction force of the water flow to stop water.

In this conventional method, when the amount of water leakage is small, a sufficient suction force does not act on the waste cloth 6, so that a satisfactory water stopping effect cannot be exhibited. When the amount of water leakage is small, as an alternative, a method has been attempted in which sediment is injected into the area where the water leak occurs to shut off the water leakage. There is a drawback that the water is diffused and a sufficient water stopping effect cannot be obtained unless the operation of charging the earth and sand is repeated many times.

As described above, according to the prior art, irrespective of whether the waste 6 is charged or the earth and sand are charged, a great deal of labor and time is required to completely shut off the water leakage. Nevertheless, there was a problem that complete stoppage of water was impossible.

[0009]

According to the first aspect of the present invention, there is provided a tubular body 20 having at least one of both ends opened, and a lid attached to the open end 21 of the tubular body 20 so as to be openable and closable. Plate 26
And a wheel 30 rotatably attached to the cylindrical container 20,
A first operating member 44 having one end fixed to the cylindrical body 20,
A material transport trolley A having a second operating member 46 having one end fixed to the lid plate 26, wherein the wheels 30 are made of a magnetic material. Since the material transport vehicle A has the wheels 30 made of a magnetic material, it can be magnetically attracted to the door plate 4 made of steel. Then, a water-stopping material such as a rag is packed inside the cylindrical container 20, and the lid 26 is closed by operating the second operating member 46 with the opening end 21 with the lid 26 down. While maintaining the above condition, the first operating member 44 is extended to descend along the door plate 4 to the vicinity of the location where water leakage occurs.
When the material transport trolley A reaches a desired location, the second operating member 46 is operated to open the cover plate 26 and discharge the waste and the like inside.

The first and second operation members 44 and 46 include ropes, strings, tapes, chains, and the like, but are not necessarily limited to flexible members, and may be, for example, rod-shaped members. .

According to a second aspect of the present invention, in the material transporting cart A of the first aspect, the wheel 30 is made up of a permanent magnet 32 and a pair of disks having a diameter larger than that of the permanent magnet 32 and sandwiching the permanent magnet 32.
34, and a pair of bridging pieces 36 that connect the pair of disks 34 to each other at a plurality of positions in the circumferential direction.
Is fixed to an end of an axle 38, and the axle 38 is rotatably supported by a bearing member 40 fixed to the tubular body 20. By sandwiching the magnet 32 between the pair of disks 34 from both sides in the axial direction and fixing the disk 34 to the axle 38, the wheel 30 constituted by the magnets 32 can be firmly fixed to the axle 38. Further, by providing the disk 34 having a diameter larger than that of the magnet 32, a magnetic force line is generated in a direction orthogonal to the axis of the wheel 20, so that a stronger magnetic attraction force than that of the magnet alone can be obtained. As the bearing member 40, a normal bearing (bearing) can be employed, but since it does not rotate at high speed, it can be implemented at low cost by employing a stainless steel or other metal pipe.

According to a third aspect of the present invention, in the material transporting trolley A of the second aspect, the disk 34 is a magnetic material and the axle 38 is a non-magnetic material. When the disk 34 is made of a magnetic material, the lines of magnetic force of the magnets 32 sandwiched between the disks 34 strongly act in a direction perpendicular to the axis of the wheel 30, so that the magnetic attraction of the wheel 30 is increased. On the other hand, when the axle 38 is made of a non-magnetic material such as austenitic stainless steel, the problem that the axle 38 is magnetized and magnetically attracted to the bearing member 40 and hinders smooth rotation of the wheel 30 does not occur. In particular, when the bearing member 40 and the wheel 30 approach or come into contact with each other, it is preferable that the bearing member 40 is also made of a non-magnetic material.

[0013] The invention of claim 4 is the invention of claim 1, 2 or 3.
In the material transport trolley A, the lid plate 26 is attached to the cylindrical body 20 via a hinge mechanism 28, and one end of the second operation member 46 is fixed to the free end side of the lid plate 26. It is characterized by having. Lid plate 26 that can be opened and closed by hinge mechanism 28
In the case of, the weight of the material such as the waste packed inside the cylindrical container 20 and the weight of the lid plate 26 act in the direction in which the lid plate 26 opens, so only by loosening the second operating member 46 The cover plate 26 can be easily opened.

According to a fifth aspect of the present invention, both ends are open (21, 22).
Cylindrical container 20, a lid plate 26 attached to the lower end side container wall of the cylindrical container 20 via a hinge mechanism 28 so as to be openable and closable, and a plurality of fixed to the outer wall surface of the cylindrical container 20 A bearing member 40, an axle 38 made of a non-magnetic material rotatably inserted into each of the bearing members 40, and the axle protruding from the bearing member 40
38, wheels 30 fixed to both ends, a bogie elevating rope 44 fixed at one end to the cylindrical body 20, and a lid plate opening / closing operation rope fixed at one end to the free end side of the lid plate 26 46, the wheel 30 comprises a permanent magnet 32, a pair of disks 34 sandwiching the permanent magnet 32 from both sides in the axial direction, and a plurality of bridging pieces connecting the pair of disks 34. 36, wherein the axle 38 is fixed to one of the pair of disks 34.

The material transporting trolley A, in which the waste is packed into the cylindrical body 20 through the opening 22 at the upper end, is mounted on the wall of the door plate 4 of the spillway gate while the cover plate 26 is kept closed. , And the ropes 44 and 46 are paid out and lowered toward the location where water leakage occurs. When the lid plate operating rope 46 is loosened at the time of reaching the vicinity of the location where the water leakage occurs, the lid plate 26 is opened by the weight and own weight of the waste, and the waste packed in the tubular body 20 is moved to the water leakage occurrence position. Released. Since a water flow is generated due to the water leakage at the location where the water leakage has occurred, the waste discharged to the vicinity is drawn to the water leakage location and acts as a water stop. After the waste has been discharged, the bogie lift operation rope
The material transporting trolley A is lifted up to the standby position above the spillway gate, that is, the trolley operating position 12 by winding up 44.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to FIG.
An embodiment of the present invention will be described with reference to FIG. In the following description, the same components as those in FIG. 5 which describe the related art are denoted by the same reference numerals, and the description of the same items will be omitted. As shown in FIGS. 2 to 4, the material transporting trolley A includes a tubular body 20 having openings (21, 22) at both ends and an opening / closing lid plate 26 attached to a lower end opening 21 of the tubular body 20. , Wheels rotatably mounted on the cylindrical body 20
30, a rope 44 having one end fixed to the cylindrical body 20, and a rope 46 having one end fixed to the free end side of the cover plate 26. The tubular body 20 is made of a thin metal plate or plastic and has a tubular shape with a rectangular cross section with openings (21, 22) at both ends. In this embodiment, the case of a rectangular cross section has been described as an example, but a circular, elliptical or other appropriate cross sectional shape can be adopted. Further, the tubular body 20 does not necessarily need to be open at both ends, and it is sufficient that at least the lower end is open. This is because it is possible to open the lid plate 26 of the lower end opening 21 and pack a rag or the like, or to provide an opening in the side wall instead of the opening at the upper end. As can be clearly understood from FIG. 2, the opening area, that is, the cross-sectional area gradually decreases from the upper end opening 22 to the lower end opening 21. A hinge mechanism 28 is provided at the lower end opening 21 of the cylindrical body 20.
A lid plate 26 is attached so as to be openable and closable via a. In this embodiment, a case where the lower end opening 21 of the cylindrical body 20 is closed by a single lid plate 26 is illustrated, but two lid plates may be provided in a double-opened manner. One end of a rope 46 is fixed to the free end side of the lid plate 26. This rope 46 is a cover plate 26
The other end extends upward through a through hole 24 provided in the wall surface of the cylindrical body 20. One end of another rope 44 is fixed to the upper end of the tubular body 20. This rope 44
Is used for raising and lowering the bogie, and the other end also extends upward. The wheels 30 are rotatable with respect to the cylindrical container 20. In this embodiment, the wheels 30 are fixed to both ends of the axle 38, and the axle 38 is fixed to a bearing member 40 fixed to the cylindrical body 20.
Is rotatably inserted. More specifically, a non-magnetic material attached to the outer wall surface corresponding to the long side of the cross section of the cylindrical body 20 via the fixing bracket 42 in a state where the direction of the axis is oriented in the horizontal direction, for example, A plurality of bearing members 40 made of austenitic stainless steel are fixed. Bearing member 40
Here, a vinyl chloride pipe is used. A non-magnetic axle 38 is rotatably inserted into each bearing member 40. The axle 38 may be a threaded bar having both ends of a steel bar with external threads or an external thread with a full length. The wheels 30 are fixed to both ends of an axle 38 protruding from the bearing member 40. The wheel 30 includes a permanent magnet 32, a pair of disks 34 sandwiching the permanent magnet 32 from both sides in the axial direction, and a bridging piece 36 connecting the disks 34 to each other at a plurality of circumferential positions.
The disk 34 has a larger diameter than the permanent magnet 32. A female screw hole is formed in the center of the disk 34, and a male screw at the end of the axle 38 is screwed into the female screw hole to fix the wheel 30 to the axle 38. The disk 34 is made of a magnetic material such as steel, and not only enables the connection between the axle 38 and the wheel 30 but also functions as a member for enhancing the attraction force by the magnetic force of the permanent magnet 32. The bridging piece 36 is made of a non-magnetic material here.

Next, the operation of the spillway gate to prevent water leakage from the spillway gate using the material carrier trolley A having the above configuration will be described mainly with reference to FIG. First, at the trolley operating position 12 above the spillway gate, the waste 6 is packed in the cylindrical container 20 of the material transporting trolley A with the lid 26 closed. Thereafter, the material transporting trolley A is magnetically attracted to the door plate 4 of the spillway gate by the wheels 30, and the ropes 44 and 46 are extended to move the material transporting trolley A to the door plate 4.
Down to its lower end. When the material transport trolley A reaches the desired location, the cover plate opening / closing operation rope 46 is loosened to open the cover plate 26, and the waste 6 packed in the tubular body 20 is directed to the water leak (8) generation position. Release. After the operation of discharging the waste 6 is completed, the bogie lifting operation rope 44 is wound up, and the material transporting cart A is pulled up to the bogie operating position 12. Reference numeral 11 indicates a dam bottom.

In this embodiment, the material carrier A is
Although the description has been given based on the example of closing the water leaking portion at the lower end of the door plate 4, since stable operability is ensured even in other work under the water surface H, for example, when performing repair work on the door plate 4 It can also be diverted to a carriage for transporting underwater cameras.

[0019]

When the material transporting cart A according to the present invention is used, the waste 6 can be reliably fed to the vicinity of the lower end of the door plate 4 of the spillway gate from which the water 8 gushes. Thus, a reliable water stoppage work can be performed. Also,
Since the structure of the material transporting trolley A is extremely simple, it is possible to carry out the water stopping operation with less trouble and low repair cost.

[Brief description of the drawings]

FIG. 1 is a sectional view of a spillway gate for explaining a method of using a material transporting cart.

FIG. 2 is a front view of a material transport cart.

FIG. 3 is a plan view of a material transport cart.

FIG. 4 is a partially cutaway side view of the material transport cart.

FIG. 5 is a sectional view of a spillway gate for explaining a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rope 2 Hoisting device 3 Wire rope 4 Door plate 5 Weight 6 Waste 7 Gate bottom 8 Water 9 Door body rotation axis 10 Worker 11 Dam bottom 12 Bogie operation position 13 Fixing bracket A Material transport trolley 20 Cylindrical body 21 Lower end Opening 22 Upper end opening 24 Through-hole 26 Lid 28 Hinge mechanism 30 Wheel 32 Permanent magnet 34 Disk 36 Bridge piece 38 Axle 40 Bearing member 42 Fixing bracket 44 Rope (operating member for opening / closing lid plate) 46 Rope (operation for raising and lowering trolley) Element)

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Matsuo Hama 224 F-term (reference) 2D019 EA03 3D050 AA01 BB03 BB08 DD01

Claims (5)

[Claims] 1. A tubular body having at least one of both ends opened, a cover plate openably and closably attached to an open end of the tubular body, and a rotatably attached to the tubular body. A wheel, a first operating member having one end fixed to the cylindrical body, and a second operating member having one end fixed to the lid plate, wherein the wheels are made of a magnetic material. Material transport trolley. 2. A bridge for connecting the wheel to a permanent magnet, a pair of disks having a diameter larger than that of the permanent magnet and sandwiching the permanent magnet, and connecting the pair of disks to each other at a plurality of circumferential positions. And one of the pair of discs is fixed to an end of the axle, and the axle is rotatably supported by a bearing member fixed to the cylindrical body. Item 1 is a material transport trolley. 3. The material carrier according to claim 2, wherein said disk is a magnetic material, and said axle is a non-magnetic material. 4. The lid plate is attached to the tubular body via a hinge mechanism, and one end of the second operating member is fixed to a free end side of the lid plate. The material carrier according to claim 1, 2 or 3. 5. A cylindrical container having an upper end surface and a lower end surface opened,
A cover plate attached to the lower end side wall of the cylindrical body via a hinge mechanism so as to be openable and closable, a plurality of bearing members fixed to an outer wall surface of the cylindrical body, and rotatable with each of the bearing members An axle made of a non-magnetic material inserted into the axle, wheels fixed to both ends of the axle projecting from the bearing member, a lid plate opening / closing operation rope fixed at one end to a free end side of the lid plate,
A bogie lifting / lowering operation rope having one end fixed to the cylindrical body, wherein the wheel connects a permanent magnet, a pair of disks sandwiching the permanent magnet, and the pair of disks. And a plurality of bridging pieces, wherein the axle is fixed to one of the pair of disks.