JP2005343652A - Heavy object suspension exchange tool for narrow place - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heavy object suspension exchange tool for a narrow place allowing a small number of workers including two persons or less to perform replacement work of a heavy object safely and easily without depending on installation environment of the heavy object. <P>SOLUTION: This heavy object suspension exchange tool for the narrow place is composed of a rail having such strength that withstands load of the heavy object and having a pulley and a hook mounting mechanism in a tip part, a carrier, a commercially available chain block for suspending the heavy object, a movement part for moving the heavy object securely and freely even while the heavy object is suspended on the carrier, an operation part, and a plurality of supporting parts for attaching this device to a member such as a structure supporting member. A chain of the commercially available chain block connects a hook in a lower part of the commercially available chain block with the heavy object through the pulley and the carrier along a rail. By shifting load of the heavy object suspended and supported on an inside structure supporting member in the narrow place such as a cubicle to this device, the heavy object is pulled out of a carrying-out door and is lowered on a floor surface to perform suspension exchange work of the heavy object such as a transformer for measuring instrument safely by saving labor. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a heavy load changing tool for a narrow space where at least two people can safely and easily replace a heavy load attached to the narrow space.

As for the heavy load changing tool for narrow spaces in the prior art, taking electric equipment in the construction industry as an example, Japanese Patent No. 3465166 [H15.8.29] instrument transformer simple replacement device has been devised. To use it, two rails are attached to the side of the suspension base so that the suspension base on which the instrument transformer is suspended, and the instrument transformer is suspended on a movable device with a roller. It is moved and pulled out from the opening to the outside of the cubicle for replacement. A variety of cubicles are manufactured by each manufacturer, and the state of storage of the instrument transformer is also various. When the two rails cannot be attached to the suspension base, the mobile device interferes with the cubicle body. There is nothing that can be used in all situations. From the above, there is no heavy object suspending tool in a narrow space where the instrument transformer can be easily pulled out and replaced regardless of the stored state.
Japanese Patent No. 3465166

  In the construction field, it is necessary to simplify work and improve safety. Considering the replacement work of hanging heavy objects in narrow spaces, there are hydraulic jacks, chain blocks, winches, etc. as typical small and light tools. If these tools can be used, the work of suspending heavy objects can be easily and safely performed by a small number of people.

  However, in order for these devices to perform their functions, a supporting point for supporting the weight is required around the heavy object. For example, the hydraulic jack cannot be used in a situation where there is a soft equipment directly under the heavy object such as an interior surrounded by an exterior material to protect the heavy object. Chain blocks and winches cannot be used if there is no supporting structure or support material directly above the heavy object. In such a situation, the replacement of heavy objects is often performed manually.

  As a requirement for the apparatus, vertical movement is a basic method of use, and there is a demand that vertical movement and horizontal movement cannot be performed at the same time even if the work place is limited. For example, the hydraulic jack may fall if the main body is moved in the horizontal direction while the load is rising. Further, chain blocks, winches, and the like may fall if the horizontal distance from the center of gravity and the fulcrum of the heavy object increases. Whichever device is used, it is a dangerous work with a high possibility of a disaster.

  In addition, the heavy goods transportation work by a large number of people may not be able to respond suddenly to unforeseen obstacles because multiple workers work on heavy goods that one person can not handle. It is likely to be dangerous work. Since the work is performed by a large number of people, the cost is also high.

  Taking the electrical equipment in the construction industry as an example, the interior of the cubicle in which the instrument transformer and the like corresponding to the above-mentioned heavy loads are housed is narrow. A wide variety of cubicles are manufactured by each manufacturer, and there are various storage states of instrument transformers, etc., and wiring materials are laid inside them, so tools such as chain blocks and winches are used. Is difficult. In particular, when the hanging position of the instrument transformer is above the opening for pulling out, it is not easy to pull out instead of replacing the conventional device. Further, in one replacement operation, there is a lot of work for horizontally moving the instrument transformer, and there is a problem that labor saving and safety are lacking.

In order to solve the above-mentioned problem, the heavy-duty rehabilitation tool for narrow spaces of the present invention has a strength that can withstand the weight, a rail provided with a pulley and a hook attachment mechanism at the tip, a carriage that moves on the rail, A commercially available chain block for suspending heavy objects, an operation part that can move reliably and freely even when a heavy object is suspended from a carriage, an operation part, and this device are attached to and supported by a strong member such as a structure support material. The chain of the commercial chain block is connected to the commercial chain block lower hook and a heavy object via a pulley and a carriage along the rail. Remove the nuts of the heavy lifting bolts that are suspended and supported by the structural support material that is fixed to the structure inside the narrow space such as cubicles, and move the load to this equipment to move the cubicles along the fixed rails. A heavy object is pulled out from a carry-out door attached to a narrow exterior material and dropped onto the floor surface, so that the replacement work of the heavy object can be performed safely and labor-saving. The mounting process is the reverse process.
The shape of the support portion for mounting and supporting the apparatus on a strong member can be accommodated by matching the shape of the structure support portion.
Moreover, if the chain of a commercial chain block is loosened by changing the length of the front and rear support portions and taking the gradient on the rail, the outer material can be avoided and it can be pulled out without using human power.

  The heavy load changing tool for a narrow space according to the present invention can use the device regardless of the environment around the heavy load in the replacement work of the heavy load in the narrow space, and can be easily and safely operated. it can.

  The heavy load changing tool for narrow spaces according to the present invention can be operated by a small number of people in the heavy load replacement operation in a narrow space, and has an effect of reducing the cost required for the work.

  The heavy object suspending tool for narrow spaces according to the present invention is characterized in that it can be moved forward, backward, and moved in the vertical direction safely by a lifting device such as a chain block.

  The heavy object changing tool for narrow spaces according to the present invention is characterized in that the number of steps for changing heavy objects in the replacement work is small, so that the danger is small and the work efficiency can be improved.

  The heavy load changing tool for narrow spaces of the present invention can be attached to a support member such as a structure support material having a different shape by an auxiliary tool such as a spacer.

  The heavy load changing tool for narrow spaces according to the present invention can be attached to a structure support material or the like by changing the shape of the fixed hardware according to the support member.

  The heavy object suspending tool for narrow spaces according to the present invention is characterized in that it can be disassembled and assembled and can be easily stored and transported.

  The heavy-duty load changing tool for narrow spaces according to the present invention has a rail having a mounting portion for taking a fulcrum on a support material that supports a heavy load, and has an operation portion and an operation portion that can reliably and freely move the heavy load. Therefore, it is possible to easily and safely work with a small number of people regardless of the surroundings of heavy objects.

Taking the example of electrical equipment in the construction industry and instrument transformer suspension work in a cubicle, the heavy object suspension tool for narrow spaces according to the present invention will be described with reference to the drawings.
FIGS. 1 to 4 are partially omitted schematic explanatory views showing the movement and role of each part of the heavy load changing tool for narrow spaces according to the present invention.

  FIG. 1 shows the current situation of a cubicle, which is a narrow space, and shows the state before and after the replacement work.

FIG. 2 shows a state in which the weight support 4 is removed from the structure support material 3 and the nut 14 is loosened and the structure support material 3 is sandwiched by the support portion 10 of the heavy load changing tool for narrow spaces. is there.
When the structure support material 3 is smaller than the support portion 10, the structure can be fixed by filling the gap using a spacer.

After fixing the heavy load changing tool for narrow spaces by the support portion 10, the heavy load 4 is attached to the hook of the chain block 11.
When the chain is rewound by the operation part and the operation part 12 of the commercial chain block 11, the weight of the heavy load 4 moves from the suspension bolt 13 to the commercial chain block 11.

  After confirming that the weight of the heavy object 4 has completely moved to the commercial chain block 11, the suspension bolt 13 is removed by loosening the nut 14.

  The stopper 8 is tilted, the switching device 9 is attached (see FIG. 5), and the carriage 7 is brought into a state in which the carriage 7 can move horizontally on the rail 6, and the chain is unwound by the operation part and the operation part 12 of the commercially available chain block 11.

  Since the chain of the commercial chain block 11 is fixed at the upper part of the hook by the switching device 9, the heavy object 4 starts to move on the rail 6 from the inside toward the outside.

  FIG. 3 shows a state in which the horizontal movement of the heavy load 4 is completed and the vertical movement is started.

After confirming that the movement of the heavy object 4 is stopped, the stopper 8 is raised to fix the carriage 7.
After the fixing of the carriage 7 is completed, the switching device 9 is removed, and the weight 4 can be moved vertically.

  After confirming that the heavy article 4 can be vertically moved and unwinding the commercial chain block 11 again, the heavy article 4 descends immediately below the fixed position of the carriage 7.

FIG. 4 shows a state in which the vertical movement of the heavy object 4 is completed and the removal process of the heavy object 4 is completed.
By performing the reverse process of the matters described above, the mounting work can be performed.

FIG. 5 shows a state where the carriage 7 moves horizontally on the rail 6.
A switching device 9 using a part of the carriage 7 is attached to an upper part of the hook of the commercial chain block 11. In this state, the commercial chain block 11 is unwound and rewound so that the carriage 7 moves horizontally on the rail 6. .

FIG. 6 shows a state where the hook portion of the commercial chain block 11 moves vertically.
Raising the stopper 8 of the carriage 7 fixes the carriage wheel 16 so that the carriage 7 cannot move on the rail 6.
When the switching device 9 is removed in this state, the chain feed portion 17 rotates and the hook portion of the commercial chain block 11 moves vertically by its own weight as the commercial chain block 11 is unwound and unwound.

  The material for the rail, carriage, and support may be either metal or resin, but is selected in consideration of strength, durability, weight, and the like. The commercial chain block can be used either manually or automatically. A winch type wire type can also be used.

Partially omitted schematic side view showing the installation of heavy objects in a narrow space Partially omitted schematic side view showing the initial stage of use of a heavy load replacement tool for narrow spaces Partially missing schematic side view showing the intermediate stage of usage of a heavy load replacement tool for narrow spaces Partially missing schematic side view showing the final stage of usage of heavy space replacement tool for narrow spaces Partially missing schematic enlarged side view showing the state of lateral movement of heavy objects during use of a heavy weight replacement tool for narrow spaces Partially missing schematic enlarged side view showing the vertical movement state of heavy objects during use of narrow place heavy goods replacement tool

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Exterior 2 Structure 3 Structure support 4 Heavy object 5 Carry-out door 6 Rail 7 Cargo 8 Stopper 9 Switching device 10 Support part 11 Commercial chain block 12 Operation part, operation part 13 Suspension bolt 14 Nut 15 Floor 16 Cart Wheel 17 Chain feeder

Claims (6)

  It has a support part that can be easily attached to the support part of the structure that supports the heavy object to be resuspended, a robust rail part that supports the heavy object, an operation part that can move the heavy object reliably and freely, and its operation A heavy load changing tool for narrow spaces characterized in that it can be safely and labor-saving for hanging heavy loads in a narrow space.   A retooling tool comprising a carriage having a strength and a structure capable of moving forward and backward along the rail while the rail portion according to claim 1 is suspended while the heavy object to be resuspended is suspended.   A narrow mechanism in which the carriage according to claim 2 is provided with a stopper mechanism for fixing the carriage to an arbitrary position on the rail during forward and backward movement, and a switching device for switching the movement of heavy objects from the forward and backward movement to the vertical vertical direction. A heavy lifting tool.   The support portion according to claim 1 can be easily attached to a structure support material having a different shape by using a spacer, and the length of the front and rear support portions can be changed to give a gradient. Narrow place heavy load suspension tool characterized by being able to.   A heavy load changing tool for narrow spaces, which is easy to disassemble and assemble, can be stored and transported, and can change hanging heavy loads at various locations.   For narrow spaces, which uses commercially available chain blocks for the operating part and the operating part according to claim 1, and can reliably and safely replace heavy objects that are installed suspended in various places. Heavy load change tool.

Images