JP4524434B2 - Columnar lifting tool - Google Patents

Description

  The present invention relates to a lifting tool used for mounting on a columnar body such as a tree or a power pole to facilitate lifting, and more particularly to a columnar body lifting tool having a fall prevention function in cooperation with a safety belt.

Even when a long and heavy metal ladder cannot be used, a device described in Patent Document 1 is known as a lifting tool that can safely move up and down to a columnar body such as a tree or a utility pole.
This lifting tool is composed of a combination of a tightening belt, a scaffold frame, and a rope ladder of an appropriate length. The fastening belt is attached to the outer periphery of the tree by fastening with a fastening tool. The scaffolding frame is made of steel bars, is composed of an incomplete circular ring and a rectangular frame perpendicular to it, and is fixed to the tree by a fastening belt. The rope ladder is detachably suspended from the scaffolding frame.
When using this lifting tool, the worker first fixes the scaffold frame to the required height position of the tree by fastening the fastening belt. Suspend the rope ladder from the fixed scaffolding frame. Next, the operator moves up onto the scaffolding frame of the first-stage lifting tool by holding a pair of lifting tools for the second stage. Then, the second stage lifting tool is attached to the tree in the same manner as the first stage. In this way, the number of steps of the lifting tool is increased one after another.
Japanese Utility Model Publication No. 6-56498

In the above-mentioned conventional columnar lifting tool, the plurality of lifting tools to be used are configured separately and cannot be carried by the operator, so that the mounting work becomes complicated, and the usage and structure are considerable. It must be large, and therefore it is not always easy to transport to a work site such as a mountainous area. In addition, no inherent fall prevention measures are taken.
Therefore, the present invention provides a columnar body lifting tool that can be easily carried on a columnar body such as a tree, and can be easily carried by a worker in the mountains and the like, and has an excellent fall prevention function in cooperation with a safety belt. With the goal.

In order to solve the above-mentioned problem, in the present invention, a columnar body is composed of a lifting device main body mounted on a columnar body A such as a tree and a holder that is coupled to an operator safety belt B and holds an unmounted lifting device body. Configure the lifting tool. The lifting tool body is composed of a long main belt, a plurality of fastening belts, a plurality of scaffold members, and a plurality of connecting members. The fastening belt is configured to be detachably attached to the outer periphery of the columnar body in a state where the main belt is coupled to the main belt at an appropriate interval in the length direction and the main belt is along the columnar body in the longitudinal direction. The scaffold member is coupled to the main belt at an appropriate interval in the lengthwise direction, and protrudes from the columnar body so as to provide a scaffold for the operator when mounted on the columnar body. The connecting members are coupled to the main belt at appropriate intervals in the length direction, and are configured to be freely engaged and disengaged from the holders. The holder is configured to be able to hold the unmounted main belt according to the mounting order by engaging the connecting member.
Of the above-mentioned scaffold members, the ones at predetermined intervals are also used as connecting members, and are configured so as to be freely disengageable from the holder locked to the worker's safety belt when not attached, and the holder is not attached The connecting member serving as the connecting member can be configured to be overlapped and engaged in accordance with the arrangement order on the main belt.

  Each time the operator removes one connecting member from the holder locked to the safety belt, the operator can feed the main belt of one span from the holder. The extended main belt can be fixed to the upper portion of the columnar body together with the scaffold member with a fastening belt, and can be climbed to the columnar body using the scaffold member. Even if the worker steps off the scaffold member, the worker is coupled to the main belt via the connecting member locked to the holder of the safety belt, and the main belt is fixed to the columnar body by the tightening belt below. Therefore, it is supported by the main belt and can be avoided. Since the lifting device also serves as a safety device, no separate safety device is required. If a part of the scaffold member is also used as a connecting member and is configured to be freely disengaged from the holder, the structure can be simplified.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view showing a use state of the lifting tool of the present invention, FIG. 2 is a perspective view of the lifting tool body of the present invention, FIG. 3 is a perspective view of a scaffold member, and FIG. 4 is a lifting tool of the present invention. It is a perspective view of a non-wearing state.

  In FIG. 1, the lifting / lowering tool 1 includes a lifting / lowering tool body 2 mounted on a columnar body A such as a tree, and a holder 3 coupled to a worker's safety belt B. The holder 3 can fold and hold the unmounted lifting tool body 2.

  As shown in FIG. 2, the lifting device body 2 includes a long main belt 4, a plurality of fastening belts 5 coupled to the main belt 4, and a plurality of scaffold members 6, 7. The lifting / lowering tool main body 2 can be connected to another lifting / lowering tool main body 2 at the connecting portions 4a at both ends of the main belt 4, and an appropriate number of the lifting / lowering tool main bodies 2 are connected and used according to the height of the tree to be climbed.

  A plurality of tightening belts 5 are coupled to the main belt 4 so as to extend in a direction perpendicular to the main belt 4 with an appropriate interval (for example, 150 cm) in the length direction. The fastening belt 5 can be fastened by being wound around the outer periphery of the columnar body A in a state where the main belt 4 is aligned along the columnar body A in the vertical direction.

  A plurality of the scaffold members 6 and 7 are coupled to the main belt 4 with an appropriate interval (for example, 50 cm) in the length direction. The scaffold members 6, 7 are configured to protrude from the columnar body A so as to provide a scaffold to the worker when mounted on the columnar body A. In the illustrated embodiment, the scaffold member 6 at predetermined intervals is coupled to the main belt 4 together with the tightening belt 5, but the coupling position is not necessarily the same as the tightening belt 5. The scaffold member 6 functions as a connecting member for the holder 3. That is, the scaffold member 6 is configured to be freely disengaged from the holder 3 and to be held by the operator by being engaged with the holder 3 when not attached to the columnar body A. In the illustrated embodiment, the scaffold members 6, 7 are formed by bending an aluminum plate in a substantially L shape, and provide contact portions 6 a, 7 a that contact the outer periphery of the columnar body A when worn, and a worker's scaffold. Step units 6b and 7b. As shown in FIG. 3, the scaffold member 6 at predetermined intervals includes an engagement hole 6c in the step portion 6b. The scaffold member 7 may have the same shape as the scaffold member 6.

  In the illustrated embodiment, the scaffold member 6 at a predetermined interval constitutes a connection member that can be engaged and disengaged with respect to the holder 3. However, a single-function connection member such as an annular bracket is provided separately from the scaffold member 6. You can also.

  As shown in FIG. 4, the holder 3 is configured so that a plurality of scaffold members 6 in an unmounted state can be stacked and held according to the arrangement order on the main belt 4. That is, the holder 3 includes an openable / closable hook 8 that can engage with the engagement hole 6 c of the scaffold member 6.

  When climbing the tree A using the lifting / lowering tool 1, an operator first winds and fastens the fastening belt 5 on the lower end side of the lifting / lowering tool body 2 at a predetermined height position of the tree A on the ground. The scaffold member 6 of the unmounted portion of the lifting / lowering tool body 2 can be removed from the holder 3 in such a manner that the lower one is stacked on top of the upper one, that is, the lower one is sequentially removed. Engage with the hook 8. Therefore, the unmounted portion of the lifting tool body 2 is suspended from the worker's safety belt B. The operator climbs the tree A using the safety band rope C together and shifting it upward while using the scaffold member 7 as a foothold. The safety belt rope C surrounds the tree A and is connected to the safety belt B at both ends. After climbing up to the scaffold member 6 at the position of the fastening belt 5 fixed to the tree A, the worker now puts himself on the safety belt rope C and is in a stable state, and then only the new scaffold member 6 to be fixed next. Is removed from the hook 8, and the fastening belt 5 is wound around the tree A at a predetermined height to be fastened and fixed. Similarly, the worker climbs the tree A using the scaffold member 7 as a foothold while shifting the safety belt rope C upward. When the worker reaches the scaffold member 6, the same operation is repeated until the tree A reaches the required height position. Climb and do the necessary work. When descending, conversely, every time the lower scaffold member 6 is reached, the fastening belt 5 is unwound and the upper scaffold member 6 is sequentially removed and engaged with the hook 8 of the holder 3. In this way, the operator is always connected to the tree by the fastening belt 5 through the scaffold member 6 locked to the hook 8 and the main belt 4 connected thereto, so that the operator should step off the scaffold members 6 and 7 by any chance. However, it is stopped by the fastening belt 5 directly below and does not fall to the ground.

  The present invention is used, for example, for ascending and descending to a tree when performing work such as pruning of neighboring trees during maintenance work of a transmission line.

It is explanatory drawing which shows the use condition of the lifting tool of this invention. It is a perspective view of the installation state of the lifting tool main body of this invention. It is a perspective view of the scaffold member in the raising / lowering tool main body of this invention. It is a perspective view of the mounting state of the lifting tool of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lifting tool 2 Lifting tool main body 3 Holder 4 Main belt 5 Fastening belt 6 Scaffolding member (connection member)
6a Contact part 6b Step part
6c Engagement hole 7 Scaffolding member 7a Contact part 7b Step part 8 Hook A Tree (columnar body)
B Safety belt C Safety belt rope

Claims (4)

It consists of a lifting device main body attached to a columnar body such as a tree, and a holder for holding the lifting device main body that is not attached to the operator's safety belt,
The lifting / lowering device main body is coupled to the main belt and the main belt at an appropriate distance from each other in the longitudinal direction, and the main belt can be attached to and detached from the outer periphery of the columnar body with the main belt extending in the vertical direction. A plurality of fastening belts, a plurality of scaffold members coupled to the main belt at appropriate intervals in the longitudinal direction, and an engagement / disengagement from the holder that is coupled to the main belt at appropriate intervals in the longitudinal direction. A plurality of free connecting members,
The scaffold member protrudes from the columnar body to provide a scaffold to the operator when mounted on the columnar body;
The holder is configured to be able to hold the main belt in an unmounted state according to the mounting order by engaging the connecting member.   The columnar body lifting tool according to claim 1, wherein at least a part of the plurality of scaffold members also serves as the connecting member. Each of the plurality of scaffold members at predetermined intervals also serves as the connecting member, each having an engaging portion for the holder,
The columnar body lifting tool according to claim 2, wherein the holder includes an openable / closable hook that can disengage and disengage the engaging portion of the scaffold member that also serves as the connecting member.   The columnar body lifting tool according to claim 1, wherein the lifting tool body is configured to be connectable to another lifting tool body at both ends of the main belt.

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