JPH0513898U - Underwater tools - Google Patents

Abstract

(57) [Summary] [Purpose] Perform work in water more easily and efficiently. [Structure] A fluid pressure gripper 3 is attached to a lower portion of a rod 1, and a pair of air tanks 7 and 17 are installed around the rod 1. Hoses 9 and 19 are connected to the air tanks 7 and 17 so that air is sent from the fluid pressure source 12 through the flow rate adjusting valves 10 and 20 and the direction switching valves 11 and 21, respectively. Therefore, air is sent to the individual air tanks 7 and 17, and the underwater work tool 22 moves.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention relates to an underwater work tool applied to underwater maintenance work, and is applicable to a nuclear reactor or the like.

[0002]

[Prior Art]

 A conventional underwater working tool is shown in FIG. As shown in this figure, the underwater working tool 52 is held by hanging the wire 48 on the eyebolt 45 located at the upper end of the rod 41 and suspending the weight of the entire tool by the hook 49 of the crane. Was there. In addition, the operator operates the handle 46 based on the image displayed by the TV camera 42 to move or rotate the hexagon wrench 44 attached as an adapter at the tip to use the tool 52. ..

[0003]

[Problems to be solved by the device]

 Since the weight of the underwater working tool 52 is held by the hook 49 of the crane via the wire 48, it is necessary to operate the crane when moving the tool 52 in the vertical direction. Therefore, there is a problem that it is difficult to make fine adjustments and it is difficult to perform fine work.

[0004]

[Means for Solving the Problems]

 The underwater work tool according to the present invention includes a rod that detachably supports a tool body for underwater work at the tip, and a plurality of rods around the rod that is above the center of gravity of the rod and is submerged in water. It is characterized by having an installed air tank and an air supply adjustment mechanism connected to this air tank and adjusting the amount of air in this air tank.

That is, an air tank for a weight balance is provided above the center of gravity in a submerged portion of a tool for underwater work, and the amount of air in the air tank is adjusted by operating a valve that constitutes an air supply adjusting mechanism. Then adjust the overall balance and balance against the eccentric load.

[0006]

[Action]

 The buoyancy of the air tank and the weight of the tool are balanced by supplying and adjusting the amount of air in the balancing air tank provided on the rod of the underwater work tool by the air supply adjustment mechanism. This eliminates the apparent weight on the handle of the tool operated by the operator when the tool is moved vertically as well as horizontally.

[0007]

【Example】

 One embodiment of the underwater working tool of the present invention is shown in FIGS. 1 and 2, and this embodiment will be described based on these drawings. 1 is an overall configuration diagram of an underwater working tool according to one embodiment, and FIG. 2 is a front view of a main portion showing an example in which an adapter at a tip of the tool is replaced.

As shown in FIG. 1, a television camera 2 for monitoring is attached to the tip of the rod 1 that constitutes the underwater working tool 22 under the water surface 13 of the rod 1, and the television camera 2 for monitoring is used for monitoring. While working, a fluid pressure gripper 3, which is a tool body, is also installed at the tip of the rod 1. The fluid pressure gripper 3 is formed with a fluid inlet 3a on the side for releasing the gripper and a fluid inlet 3b on the side for tightening the gripper, and the fluid pressure clipper 3 operates by introducing the fluid into the respective fluid inlets 3a, 3b. Further, an eyebolt 5 and an operating handle 6 for lifting with a crane when the underwater working tool 22 is moved are attached to an upper portion of the rod 1. Therefore, the operator can operate underwater from the floor above the water.

Further, a pair of balancing air tanks 7 and 17 are installed around the rod 1 above the center of gravity of the rod 1 near its center of gravity. These air tanks 7 and 17 have water drain holes 7a and 17a at the bottom and air supply ports 7b and 17b at the top, and a float 8 for stabilizing the water surface is enclosed inside the tanks 7 and 17. Has been done. The air supply ports 7b and 17b are connected to the directional control valves 11 and 21 by the hoses 9 and 19 via the flow rate adjusting valves 10 and 20, respectively, and are air from the fluid pressure source 12 such as a pump. The outflow direction and flow rate of the compressed air are adjusted by the valves of the flow rate adjusting valves 10 and 20 and the direction control valves 11 and 21. That is, the flow rate adjusting valves 10 and 20, the direction control valves 11 and 21, the fluid pressure source 12 and the like constitute the air supply adjusting mechanism 25.

As described above, by individually adjusting the amount of air in the pair of air tanks 7 and 17, the balance of the entire underwater working tool 22 is adjusted so that the worker can easily work.

As shown in FIG. 2, the hydraulic gripper 3 installed at the tip of the rod 1 can be replaced with an adapter 23 having a hexagonal wrench 4, which is replaced with the hexagonal wrench 4. In this case, the same work can be performed by adjusting the amount of air in the air tanks 7 and 17.

[0012]

[Effect of the device]

 According to the underwater work tool of the present invention, by adjusting the amount of air in the plurality of air tanks installed around the rod of the underwater work tool, the water in the air tank is discharged and the buoyancy of the air tank is increased. , The apparent weight of the tool in water is eliminated.

As a result, the underwater working tool can be freely operated in the water in the horizontal direction and the vertical direction, and the working efficiency is significantly improved.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an underwater work tool according to an embodiment of the present invention.

FIG. 2 is a front view of relevant parts showing an example in which the adapter at the tip of the tool is also replaced.

FIG. 3 is an overall configuration diagram of an underwater working tool according to a conventional technique.

[Explanation of symbols] 1,41 Rod 2,42 Television camera 3 Fluid pressure gripper 4,44 Hexagonal wrench 5,45 Eye bolt 6,46 Handle 7,17 Air tank 8,18 Float 9,19 Hose 10,20 Flow rate control valve 11 , 21 Directional switching valve 12 Fluid pressure source 13 Water surface 22, 52 Underwater working tool 25 Air supply adjusting mechanism

Claims (1)

[Scope of utility model registration request] 1. A rod that detachably supports a tool body for underwater work at its tip, and a plurality of air tanks installed above the center of gravity of the rod and around the rod that is submerged in water. An underwater working tool connected to an air tank and having an air supply adjusting mechanism for adjusting the amount of air in the air tank.