JP5651514B2 - Tree lift assisting tool equipped with a two-point locking fall prevention rope and a belt with a choke stand, and a tree lifting method using the same - Google Patents

Description

  The present invention relates to a tree lifting assist tool mainly used in a tree lifting operation and a tree lifting method using the tree lifting assist tool.

  In order to cut a tree branch in contact with an electric wire (referred to as “line cutting”), and for pruning a planted tree, an operator needs to go up and down the tree. As a method of raising and lowering the trees at this time, a method of raising and lowering the steps by leaning a ladder (one ladder main material called a single ladder with many steps with one step) along the tree, and fixing to the tree A method of moving up and down while placing a step (single scaffold) with a rope or belt and about the size of the sole of one foot of an operator at an interval of about 50 cm, attaching brackets with claws to both feet, There is a method of going up and down while biting into a tree.

  The ascending / descending work to the tree and the felling work on the tree become work at a high place, and there is a risk that the worker may fall and be injured. Therefore, the worker wears a pole safety belt with a hooked rope called a lanyard, embraces the trunk of the tree with a rope connected to one of the rings located on both sides of the waist, and hooks the hook at the end of the rope to the other ring To hold the U-shaped posture (called U-shaped fishing) with the tree, and it is connected to the trunk of the tree by this safety belt to prevent a fall if it is accidentally stepped off. Yes. However, when there is a branch or the like and the hook of the lanyard is changed, the connection between the worker and the trunk of the tree is released. At this time, the possibility of a crash is very high.

  In high-altitude work such as construction sites, a safety belt dedicated to single hooks is used, but to prevent a crash when changing hooks, two lanyards are attached and either hook is firmly structured It is connected with the object, and a technique is taken to avoid the state of the unfolded rope (the state where the hook is not locked and the human body and the structure are not connected), and in the event of a crash, the fall distance is shortened and the impact is reduced. In order to reduce the load, the locking point of the lanyard hook is set higher than the waist of the human body. However, when a tree is raised and lowered, a solid structure is a trunk (a branch often cannot provide sufficient strength), and it is difficult to hang a lanyard hook.

  In addition, the lanyard of the pole safety belt is connected to the belt wrapped around the human body by an expansion / contraction adjuster that holds the rope, and the length of the rope, that is, the distance from the tree, can be adjusted by this expansion / contraction adjuster. During this period, the U-shaped posture can be maintained and work can be performed with both hands free. However, in order for the operator to smoothly move up and down the tree, it is necessary to keep a distance by pulling the waist from the trunk to some extent. In this way, when the foot is stepped off with a distance from the tree, it may slide down as it is. Therefore, it is desired to prevent a crash by using a sub lanyard different from the main lanyard.

In particular, in the work of cutting a tree branch that becomes an obstacle to a distribution line, the tree becomes a conductive path, and therefore, an operator needs to wear an insulating (rubber) protective device. For this reason, as an elevating tool or an elevating auxiliary tool (fall prevention tool) used in the elevating operation of trees, it is desired to make the equipment as light as possible.
Also, the work of pruning trees that have been planted for afforestation is often carried out in the mountains far from the forest road. Currently, forestry workers are difficult to carry around lifting and lifting aids that are carried with chainsaws and saws unless they are lightweight.

There exists a thing of Unexamined-Japanese-Patent No. 2006-239183 as a conventional tree raising / lowering auxiliary tool.
This is an elevating tool that rises to a tree while creating a scaffold, and tries to prevent a fall by connecting the elevating tool with a hand-held safety belt.

However, in the conventional product, the support belt attached to the tree in order to support the load at the time of the crash may be close to the operator's feet, which may increase the fall distance and increase the impact load. In the worst case, when a crash occurs at a low position in the tree, there is a risk of crashing into the ground due to the long fall distance. In this conventional product, the main belt and the wrapping belt are connected, so a buckle is used to handle the difference in the diameter of the tree. As a result, the buckle slips and the fall distance becomes longer.
Further, the conventional product may not be used when the tree is bent greatly or there is a branch at a position where the winding belt is wound. Furthermore, it is not easy to carry and lift a large amount around the waist even if you want to move up and down easily, but not only does it require labor, but also increases the risk of being caught by obstacles such as branches.

JP 2006-239183 A

  The main problem to be solved by the present invention is that the incline rope is not connected to the trunk of the tree when there is a branch or the like and the hook of the on-pillar safety belt is changed only with the on-pillar safety belt. This is where the situation occurs. In addition, the technique of Patent Document 1 invented to solve the above problem is an invention of a technical idea that climbs to a tree while making a scaffold, the load supporting point is close to the foot, and the falling distance becomes long, The problem is that the impact load becomes large, that it cannot be mounted depending on the position of bent trees and branches, and that it cannot be lifted and lowered with light equipment.

  Therefore, the present invention can be used in combination with a tree lifting tool that is generally used by underlined logging and pruning operators. An object of the present invention is to provide a tree lifting assisting tool and a tree lifting method using the same, which can reduce the impact load in the event of a fall by setting the load support point on which the hook is placed higher than the waist.

  In order to solve the above-described problems, the present invention includes an eye part (an annular part obtained by processing a rope or a belt) that is folded and sewn on one end of the belt, and a plurality of the belts in the vicinity of the other end and the other end of the belt. Embrace the tree with a belt with a choke base provided with a ring part, and insert the eye part of one end into the ring of the ring part near the other end or the other end, and fix the base part (load or object) Part). On the other hand, two hooks that can be locked to the eye part of the belt with a choke stand are provided at the tip of the safety belt fall prevention rope, and the worker and the tree are separated by the fall prevention rope and the belt with the choke stand that hangs around the tree. Can be connected. Using a plurality of belts with choke bases and fall prevention ropes that are mounted in order, the operator always moves up and down with at least one hook connected to the belt with choke bases.

  Each of the other end of the belt with the choke base and the ring portion in the vicinity of the other end is formed in a ring shape having substantially the same diameter, and is provided in a continuous manner at substantially equal intervals on the belt body. By selecting and using the most appropriate ring portion among the ring portions, the operator can wrap the belt with the chalk base around the trees having different diameters and use the belt with a safe length.

  In order to connect one end of the fall prevention rope and two hooks in parallel, a third ring (attachment plate) is used. With this connection method, even when wearing thick gloves, the hooks are connected in a state of being separated from each other. Therefore, the hooks can be easily selected and gripped without overlapping, and workability is improved.

The operator first wraps the first belt with the chalk base around the tree so that it is at the height of his / her height, and one hook a at the tip of the fall prevention rope is attached to the eye part of the belt with the first chalk base. Lock to prevent crash. Next, the first choke base belt is raised to a position higher than one's waist using the lifting tool. Next, wrap another second belt with a chalk base around the tree so that it is at the height of your height, and lock the other hook b of the fall prevention rope to the eye of the second belt with a chalk base. To prevent the crash. Subsequently, the hook a is removed from the eye part of the first choke base belt, and the first choke base belt is removed from the tree. Then, the worker rises until the second belt with the chalk base comes to his / her waist position. This process or the reverse procedure is repeated to move up and down.
In these processes, the operator is constantly connected to the trunk of the tree by the lifting assist tool of the present invention. Moreover, the load support point which is a winding part of the belt with the choke base is constantly higher than the waist of the operator.

In the previous paragraph, the first and second choke base belts were lifted up and down, but the first, second, third, fourth and multiple choke base belts were prepared, and the choke base belts were made of trees. There is also a method of ascending and descending while arranging them.
The operator first wraps the first belt with the chalk base around the tree so that it is at the height of his / her height, and one hook a at the tip of the fall prevention rope is attached to the eye part of the belt with the first chalk base. Lock to prevent crash. Next, the first choke base belt is raised to a position higher than one's waist using the lifting tool. Next, wrap another second belt with a chalk base around the tree so that it is at the height of your height, and lock the other hook b of the fall prevention rope to the eye of the second belt with a chalk base. To prevent the crash. Subsequently, the hook a is removed from the eye part of the first belt with a choke base. Subsequently, the worker rises until the second belt with the chalk base comes to his / her waist position. Then, wrap a third belt with a chalk base around the tree so that it is at the height of your height, and attach one hook a at the tip of the fall prevention rope removed from the belt with the first chalk base to the third chalk base. Locks to the eye part of the attached belt to prevent falling. In the same manner, when ascending and descending to a predetermined position, the same reverse procedure is repeated while sequentially removing from the belt with the chalk base installed last.
In these processes, the operator is constantly connected to the trunk of the tree by the lifting assist tool of the present invention. Moreover, the load support point which is a winding part of the belt with the choke base is constantly higher than the waist of the operator.

  By using the tree raising / lowering assisting tool according to the present invention, it is possible to avoid the state of the unfolded rope when the hook of the safety belt is changed. The load support point for hooking the hook of the safety belt is higher than the waist, which has the effect of reducing the impact load in the event of a fall. Moreover, the tree raising / lowering auxiliary tool of this invention can prevent a fall without being influenced by the bending of a tree and the position of a branch. Furthermore, since it is light and easy to carry and is not bulky, there is little risk that the tree lifting aid of the present invention will be caught by an obstacle such as a branch and the posture of the operator will be lost.

It is explanatory drawing by which the use condition of the tree raising / lowering auxiliary tool which concerns on embodiment of this invention was shown. It is the front view by which the fall prevention rope 1 which concerns on Example 1 of this invention was shown, and the attachment figure to the D ring 33 of the pole safety belt | band | zone 3. FIG. It is the front view by which the 3rd ring (attachment plate) 12 of the fall prevention rope 1 which concerns on Example 1 of this invention was shown. It is the front view and side view in which the belt 2 with a choke stand which concerns on Example 1 of this invention was shown. It is the side view by which the modification of the belt 2 with a choke stand which concerns on Example 1 of this invention was shown. It is the front view in which the safety belt 3 on a pillar used by the operator who raises / lowers a tree is shown. It is explanatory drawing in which the process of the tree raising / lowering method 1-1 of Example 1 of this invention was shown. It is explanatory drawing by which the process of the tree raising / lowering method 1-2 of Example 1 of this invention was shown. It is the front view and side view in which the fall prevention rope 5 which concerns on Example 2 of this invention was shown. It is the front view and side view in which the belt 6 with a choke stand which concerns on Example 2 of this invention was shown. It is the front view by which the fall prevention rope 7 which concerns on Example 3 of this invention was shown.

<Elevating tool and safety belt used together with the tree lifting aid of the present invention when ascending and descending to a tree>
Embodiments according to the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram showing a use state of a tree lifting assist tool. First, the worker wears the pole safety belt 3 provided with the main lanyard 31, holds the trunk of the tree in the main lanyard 31, and then locks the hook of the main lanyard 31 to the D ring 33 of the safety belt. . Next, step 4 (single scaffold) having a size about the sole of one foot of the operator and provided with a rope or a belt for fixing to the tree is set to the first distance at which the operator can move up and down (about 50 cm). Step 4A, second step 4B, and third step 4C, and climb to the tree while sequentially arranged. After arriving at the work position, the U-shaped posture is maintained between the trees and both hands are operated freely. When descending from the tree, descend in the reverse order while step 4 is removed.
In addition, in order to simplify description, the description regarding the attachment and removal of step 4 is omitted below.

As shown in FIG. 1, the tree lift assisting tool of the present invention is provided with a fall prevention rope 1 having two hooks 13a and 13b at the tip, an eye portion 22 at one end, and a plurality of pieces at the other end. It comprises at least two belts 2 with choke bases provided with ring portions 23, 24, 25.
As will be described in detail later, the number of the belts 2 with choke bases may be two when the belts 2 with choke bases are rearranged as the operator moves up and down. Further, in the case of sequentially arranging when climbing and removing sequentially when descending without reordering, the necessary number of belts 2 with choke bases is determined by the height of the trees to be raised and lowered.

  Fig.2 (a) is the front view by which the fall prevention rope 1 which concerns on Example 1 of this invention was shown. The fall prevention rope 1 includes a rope 11, a third ring (attachment plate) 12, and two hooks 13 a and 13 b.

  FIG. 3 is a front view showing a third ring (attachment plate) 12 of the fall prevention rope 1 according to the first embodiment of the present invention. As shown in FIG. 3, the third ring 12 has two hook connection holes 121 a and 121 b and a rope connection hole 122. The hook connection holes 121a and 121b are provided opposite to both sides of the central axis YY. The rope connecting hole 122 is provided with its center on the central axis YY.

  As shown in FIGS. 2A and 3, one end of the rope 11 is knitted into the rope connection hole 122 of the third ring 12, and the hooks 13a and 13b are hooked to the hook connection holes 121a and 121b by the U shackles 14a and 14b. Connected in parallel. The other end of the rope 11 is knitted in an annular shape to form an annular portion 15.

  The rope 11 has the same specifications as the auxiliary lanyard used by the operator using the safety belt on the pole when changing over the main lanyard, and is usually a nylon rope having a diameter of 10 to 12 mm. Knitting is a method of knitting called “satsuma processing”. In this embodiment, a fiber rope is used. However, as long as it has a predetermined strength (tensile strength of 15.0 kN or more), it may be sewn using a belt strap or the like. Here, the “specified strength” refers to standard values of “safety belt standard” and “safety belt structure guideline”.

  Here, the length of the fall prevention rope 1 is not particularly specified, but it is desirable that the fall prevention rope 1 is as short as possible so as not to hinder the work in order to keep the impact load at the time of dropping in the unlikely event. Specifically, the lanyard length (rope length + hook length) of the secondary lanyard to be attached to the safety belt on the pillar may not be specified for the hanging object to be hooked, and is 1.6 to 1.7 m as a standard. However, in this embodiment, as shown in FIG. 1, the belt 2 with the choke base, which is a hook for hooking the fall prevention rope 1, has a height from the waist to the head in front of the operator's body. Since this is the position, the lanyard length can be set to 1.0 to 1.4 m.

  The third ring 12 is made of iron or aluminum and has a predetermined strength (tensile strength of 11.5 kN or more), and is manufactured by punching a plate, laser cutting, or forging. . The third ring 12 has three holes, but the number of holes is not limited as long as the rope 11 and the two hooks 13a and 13b can be connected. Specifically, one hole may be used, and the rope 11 and the U shackles 14a and 14b may be connected to the one hole. However, it is desirable that the hook 13a and the hook 13b are connected to different holes so that the hook 13a and the hook 13b are not confused when the operator locks the hook.

  Further, in this embodiment, U shackles 14a and 14b are used to connect the third ring 12 and the hooks 13a and 13b. However, a method having a predetermined strength similar to that of the third ring 12 is used. If so, the connection method is not limited. As the simplest connection method, it is also possible to connect the rope 11 directly to the ring portions of the hooks 13a and 13b. That is, the third ring 12 and the U shackles 14 a and 14 b are not essential elements constituting the fall prevention rope 1. However, considering the ease of assembly during manufacture and the handleability of the hook during operation, it is desirable to include the third ring 12 and U shackles 14a and 14b.

  FIG. 2B is an attachment diagram of the fall prevention rope 1 according to the first embodiment of the present invention to the D ring 33 of the safety belt 3. As shown in FIG. 2B, after the annular portion 15 at the end of the rope 11 is inserted into the D ring 33, the third ring 12 having two hooks 13a and 13b connected thereto is inserted into the annular portion 15. By setting the ring of the annular portion 15 to be tightened, the fall prevention rope 1 is connected to the D ring 33 of the column safety belt 3. Therefore, the size of the ring of the annular portion 15 is such that the third ring 12 connecting the two hooks 13a and 13b can be inserted. In this embodiment, the annular portion 15 is provided at the other end of the fall prevention rope 1, but it may be connected to the D ring 33 of the pole safety belt 3 using a hook or a carabiner.

  4 (a) and 4 (b) are a front view and a side view showing the belt 2 with a choke base according to the first embodiment of the present invention. As shown in FIGS. 4 (a) and 4 (b), the belt 2 with a choke base is an eye formed in a ring shape having a size capable of locking the hook collar of the fall prevention rope 1 to one end of the belt main body 21. A portion 22 is provided, and a plurality of ring portions 23, 24, and 25 are formed at the other end of the belt main body 21 and are formed in a ring shape that allows the eye portion 22 to be inserted.

  The eye portion 22 is formed with a ring (about φ50 mm) large enough to be easily locked on the tree by folding one end of the belt main body 21 so that the hooks of the hooks 13a and 13b can be locked on the tree. Sutured in length. This predetermined length means a predetermined strength (a tensile strength of 11.5 kN or more in the state of chalk hanging in use) and durability (a performance that resists deterioration due to wear, ultraviolet rays, etc. during normal use). The suture length determined in consideration. Further, since the metal hooks 13a and 13b are locked to the eye portion 22, the ring-shaped portion is covered with a wear preventing cloth 221 that is a protective member for preventing wear, A heat-shrinkable tube 222 is covered to prevent deterioration of the sewing thread due to wear.

The ring portion 23 is folded back at the other end of the belt body 21 in the same manner as the eye portion 22 to form a ring having a size (about φ50 mm) into which the eye portion 22 can be inserted. The belt is sewn at a predetermined length from the end of the belt.
The ring portions 24 and 25 are formed by folding a separate belt to form a ring of a size (about 50 mm) into which the eye portion 22 can be inserted. The belt main body has a predetermined length from the folded belt end. 21 is sewn.
The predetermined length of these stitches is the same as that of the eye part 22, and a heat-shrinkable tube 222 is covered on the stitched part to prevent deterioration of the sewing thread due to wear.

Each of the ring portions 23, 24, and 25 is formed in a ring shape having substantially the same diameter, and is provided on the belt main body 21 in a continuous manner at almost equal intervals. As shown in FIG.4 (b), the ring parts 23, 24, and 25 are arrange | positioned in the position of the grade which the ring-shaped part and the stitching | suture part of an adjacent ring part do not overlap. As a result, when squeezing and wrapping around a tree like a chalk, it is possible to cope with various tree diameters by selecting one of the ring parts 23, 24 and 25 according to the diameter of the tree and inserting the eye part 22. it can. As a matter of course, trees have different diameters depending on their sizes, and even a single tree has different diameters depending on its height position. For this purpose, the choke base belt 2 is prepared with several types of overall lengths. However, by providing a plurality of overlapping ring portions, one type can substantially cope with the difference in diameter depending on the height position of the tree.
Further, in the present embodiment, the ring-shaped portions are three ring portions 23, 24, 25, and the number of the ring-shaped portions is appropriately determined depending on the total length of the belt 2 with the choke base. Furthermore, even if the diameter of the ring-shaped part is not the same, even if the arrangement positions of the ring parts are not equally spaced, the diameter of the ring-shaped part and the arrangement position of the ring part may be combined to correspond to various diameters of trees. .

  5 (a), 5 (b) and 5 (c) are side views showing a modification of the belt 2 with a choke base according to the first embodiment of the present invention. As shown in FIG. 5A, the ring portions 23, 24, and 25 may be appropriately sewn not only on one side of the belt body 21 but also on both sides. As shown in FIG. 5B, the ring portion 23 may be sewn with a separate belt without folding the belt main body 21. As shown in FIG. 5C, a plurality of ring-shaped portions may be provided by folding the belt main body 21 and sewing it without sewing the ring portions 24 and 25 with a separate belt.

The belt constituting the belt 2 with the choke base of the present invention is formed of a flexible material so that it can be easily wound around a tree. Specifically, nylon, polyester, aramid fiber, or the like can be used. The width and thickness are selected as light as possible within a range having a predetermined strength (tensile strength of 15.0 kN or more). Specifically, if it is about 20 mm × 3 mm, it is easy to handle.
In this embodiment, a belt is used. However, a fiber rope or the like may be used as long as it has a predetermined strength.

  FIG. 6 is a front view showing the on-pillar safety belt 3 used by an operator who moves up and down a tree. As shown in FIG. 6, the pole safety belt 3 includes a main lanyard 31 and a body belt 32. A D-ring 33 is provided on the body belt 32. As shown in FIG. 2 (b), the fall prevention rope 1 is connected to the D ring 33 of the pole safety belt 3.

  The method of ascending and descending the tree using the step 4 and the pole safety belt 3 as the lifting tool has been described above. Here, a tree lifting assist tool composed of the fall prevention rope 1 and the belt 2 with the choke stand is used. A method of safely ascending and descending while preventing crashes will be described.

  First, the operator holds the trunk of the tree with the first belt 2A with a chalk base (first belt with a chalk base) at a height position of his height, and the eye part 22 is connected to the ring parts 23, 24, After being inserted into any one of 25, it is squeezed like a chalk hanging and wound around a tree. Then, one hook 13a of the fall prevention rope 1 connected to the pole safety belt 3 is locked to the eye part 22 of the belt with the first choke base. Subsequently, the process proceeds to the first step 4. At this time, the locking point of the hook 13a hung on the belt with the first chalk base is at a position higher than the operator's waist, and even if it falls, the impact load is suppressed.

  Next, the worker winds the second belt 2B with the choke base (second choke base belt) around the tree in the same manner as the belt with the first choke base at the height position of his height. Then, after the other hook 13b of the fall prevention rope 1 is locked to the eye portion 22 of the belt with the second choke base, the one hook 13a of the fall prevention rope 1 is removed from the belt with the first choke base. Subsequently, the process proceeds to the second step 4. At this time, the locking point of the hook 13b hung on the belt with the second choke base is at a position higher than the operator's waist, and even if it falls, the impact load is suppressed. Thereafter, this procedure is repeated to ascend. When getting off, repeat this reverse procedure.

Thus, one of the hooks 13a and 13b of the fall prevention rope 1 is connected to the belt 2 with the choke base at a position higher than the waist of the operator. When there is a branch or the like and the hook of the main lanyard 31 of the pole safety belt 3 is changed, the state of the no-tuna rope can be avoided.
Since the method of attaching the belt 2 with the chalk base to the tree is a chalk tightening method, the belt 2 can be wound even if the tree is bent. Moreover, even if there is a branch at the position to be wound, the attachment point can be changed and the winding can be performed. Therefore, the tree raising / lowering assisting tool of the present invention can prevent a fall without being affected by the bending of the tree or the position of the branch. Specifically, even if an unstable state occurs in which the trunk is extremely inclined and step 4 cannot be attached, the fall can be prevented by attaching the tree lifting aid of the present invention.
Furthermore, when the lifting platform and the fall prevention tool are integrated as in Patent Document 1, the lifting and working positions are limited, but in the present invention, raising and lowering while preventing fall at any position of 360 ° of the trunk.・ Work is possible. Specifically, even when the route for ascending and descending the tree is 180 ° on the opposite side across the trunk, the belt 2 with the choke base can be loosened and easily reversed.

  In addition, the present invention is a method in which a tree trunk is hugged by the belt 2 with a chalk base, and the eye part 22 is inserted into any of the ring parts 23, 24, 25 and then squeezed like a chalk suspension and wound around the tree. There are other methods, such as attaching to the trunk of a tree using a buckle. However, in this method, when a large load is applied, such as in the event of a fall, the slip of the buckle is added to the elongation of the belt, and the fall distance becomes long and the impact load becomes large. On the other hand, the choke type is only a factor of belt elongation, and the fall distance is suppressed.

  When an operator performs a work such as felling on a tree, the worker entrusts his / her weight to the main lanyard 31 of the pole safety belt 3 to perform the work. One of the causes of the crash at this time is a hook hook error. Specifically, the hook is often hung on a simple hook for hanging a tool or a simple carabiner without being hooked on the D-ring to be originally locked. In the present invention, since any one of the hooks 13a and 13b of the fall prevention rope 1 is connected to the belt 2 with the choke base at a position higher than the operator's waist, the operator can perform the felling operation with both hands with peace of mind. .

  The fall prevention rope 1 according to the present invention is obtained by adding a third ring 12 and a hook 13b to a conventional secondary lanyard, and the belt 2 with a choke base is made of a fiber belt to ensure safety. Is very lightweight. Since it requires only minimal equipment, it has excellent workability. Therefore, both the undercutting operator and the afforestation worker working in the mountains can use the lifting assist tool of the present invention without reducing the work efficiency.

FIG. 7A to FIG. 7E are explanatory diagrams showing the steps of the tree lifting / lowering method 1-1 according to the first embodiment of the present invention.
As shown in FIG. 7 (a), in step (a), the operator wraps the first belt 2A with the choke base around the tree so that his height is about his height, The hook 13a is locked to the eye portion 22 of the first choke base belt 2A.
As shown in FIG. 7B, in step (b), the worker moves up one step using step 4A. At this time, the first belt with the choke base is at a position higher than its own waist.
As shown in FIG. 7 (c), in the step (c), the operator wraps a separate second belt 2B with a choke base around the tree so that the height of his / her height is about his own height, and the fall prevention rope The other hook 13b of 1 is locked to the eye part 22 of the second choke base belt 2B.
As shown in FIG. 7 (d), in the step (d), the operator removes the hook 13a from the eye portion 22 of the first choke base belt 2A and removes the first choke base belt 2A from the tree. .
As shown in FIG. 7E, in step (e), the worker moves up one step using step 4B. At this time, the second belt with the chalk base is at a position higher than its own waist.

  These steps (a) to (e) are defined as one cycle, and the operator repeats each step and rises to the tree. Repeat the reverse procedure to get off the tree. Accordingly, at least one hook is connected to any one of the belts with the choke table at a position higher than the operator's waist from the start to the end of the ascent and descent to the tree.

FIG. 8A to FIG. 8F are explanatory diagrams showing the steps of the tree lifting method 1-2 according to the first embodiment of the present invention.
As shown in FIG. 8 (a), in step (a), the operator wraps the first belt 2A with the choke base around the tree so that the height of his / her height is about his / her height, The hook 13a is locked to the eye portion 22 of the first choke base belt 2A.
As shown in FIG. 8B, in step (b), the worker moves up one step using step 4A. At this time, the first belt 2 </ b> A with the choke base is at a position higher than its own waist.
As shown in FIG. 8 (c), in the step (c), the operator wraps a separate second belt 2B with a choke base around the tree so that the height of his / her height is about his own height, and the fall prevention rope The other hook 13b of 1 is locked to the eye part 22 of the second choke base belt 2B.
As shown in FIG. 8D, in the step (d), the operator removes the hook 13a from the eye portion 22 of the first choke base belt 2A.
As shown in FIG. 8E, in step (e), the worker moves up one step using step 4B. At this time, the second belt 2B with the choke base is at a position higher than its own waist.
As shown in FIG. 8 (f), in the step (f), the operator winds the belt 2C with the third choke base around the tree so as to be at a height of his height, and the first choke base is attached. One hook 13a at the tip of the fall prevention rope removed from the belt 2A is engaged with the eye portion 22 of the third belt 2C with a choke base.

Similarly, it rises to a predetermined position. At this time, the plurality of belts with choke bases 2 are sequentially arranged on the tree as in Step 4. When getting off, the same reverse procedure is repeated while moving up and down while sequentially removing the belt with the chalk base installed at the end.
Accordingly, at least one hook is connected to any one of the belts with the choke table at a position higher than the operator's waist from the start to the end of the ascent and descent to the tree.

Usually, a safety belt used by an operator who goes up and down the tree is a safety belt called a pole safety belt 3 in which a main lanyard 31 called a rope is attached to the trunk belt 32. However, the tree lifting aid of the present invention can be used even if it is intended to be lifted and lifted even if it is of a type that is not attached to the trunk line and cannot be used for U-shaped fishing.
As described in the method of moving up and down while placing step 4 as a method for the operator to move up and down the tree, when using a single ladder, or when using a bracket with claws on both feet However, the tree lifting aid of the present invention can be used as well. That is, the tree raising / lowering assisting tool of the present invention can be used in combination with a tree raising / lowering tool that is generally used by a line felling or pruning operator.

  Embodiment 2 of the present invention will be described below. The same parts as those in the first embodiment will be denoted by the same reference numerals, and the description thereof will be omitted. Only the structure having a difference in the second embodiment with respect to the first embodiment will be described.

  FIG. 9 is a front view and a side view showing the fall prevention rope 5 according to the second embodiment of the present invention. The fall prevention rope 5 includes a rope 51, a third ring 52, and a hook 53. As shown in FIG. 9, the third ring 52 is provided with three holes, and one end of the rope 51 is knitted and connected to the one hole. A hook 53 is connected to the other hole of the third ring 52 by a U shackle 54. The hook locking hole 521, which is the remaining one hole of the third ring 52, is a hole having a size capable of locking the hook 62 of the belt 6 with the choke base described below. Further, the other end of the rope 51 is provided with an annular portion for connection to the D ring 33 of the pole safety belt 3 as in the first embodiment.

  FIGS. 10A and 10B are a front view and a side view, respectively, showing the belt 6 with a choke base according to the second embodiment of the present invention. As shown in FIGS. 10A and 10B, the belt 6 with a choke base has a hook 62 connected to one end of the belt main body 61, and the hook 62 can be inserted into the other end of the belt main body 61. A plurality of ring portions 63, 64, 65 formed in a ring shape of a large size are provided in a continuous manner at almost equal intervals.

In the tree lifting / lowering method 1-1 of the first embodiment, one fall prevention rope 1 and two belts 2 with a choke base are used, and two hooks 13a and 13b of the fall prevention rope 1 are attached to two chokes. Locked to the respective eye portions 22 of the base belt 2, the worker was constantly connected to the trunk of the tree to prevent the fall.
In the second embodiment, the hook 53 of the fall prevention rope 5 is choked by using one fall prevention rope 5, one choke base belt 6, and one choke base belt 2 of the first embodiment. The hook 62 of the belt 6 with the choke base is engaged with the hook engaging hole 521 of the third ring 52 of the fall-preventing rope 5 so that the operator is constantly on the trunk of the tree. Are connected to prevent a crash. That is, in Example 2, the fall prevention rope 5 is connected to the pole safety belt 3 and the belt 6 with the choke base and the belt 2 with the choke base are wound around the trunk of the tree, and then each hook and eye part are connected. While being combined, it is lifted and lowered in substantially the same procedure as in the first embodiment to avoid the state of the unhulled rope when hooks are replaced.

  Since the hook and eye part need to be combined in this way, a plurality of belts 6 with choke bases and belts 2 with choke bases are prepared as in the tree raising / lowering method 1-2 of the first embodiment. In the case of climbing to a tree while being arranged, it is necessary to alternately arrange the belt 6 with chalk base and the belt 2 with chalk base.

  Embodiment 3 of the present invention will be described below. The same parts as those in the first embodiment and the second embodiment are denoted by the same reference numerals, and the description thereof is omitted. Only the structure having a difference in the third embodiment with respect to the first and second embodiments is described. explain.

  FIG. 11 is a front view showing the fall prevention rope 7 according to the third embodiment of the present invention. The fall prevention rope 7 includes a rope 71 and a hook 72. As shown in FIG. 11, one end of the rope 71 is knitted and connected to the ring portion of the hook 72. The other end of the rope 71 is provided with an annular portion for connection to the D ring 33 of the pole safety belt 3 as in the first embodiment.

  In the third embodiment, the two fall prevention ropes 7 and 7 and the two belts 2 and 2 with the choke base of the first embodiment are used. First, the worker connects the two fall prevention ropes 7, 7 to the pole safety belt 3. In this state, it is the same state as the first embodiment in which two hooks are provided on the worker side. The operator winds the belt 2 with the chalk base around the trunk of the tree, and then hooks the hook 72 of the fall prevention rope 7 to the eye portion 22 of the belt 2 with the chalk base, and repeats this in the same manner as in the first embodiment. While going up and down. At this time, the worker is constantly connected to the trunk of the tree to prevent the fall.

  The fall prevention rope 7 according to the third embodiment may use a secondary lanyard called a “safety rope” that is usually used by workers who underline logging. Accordingly, the operator has to install a total of three lanyards, one main lanyard and two fall prevention ropes 7, but there is no need to prepare a special sub lanyard and two If the belt 2 with a choke base is prepared, measures for preventing a fall can be taken. However, in order to keep the impact load at the time of dropping in the unlikely event, it is desirable that the length of the fall prevention rope 7 is as short as possible so as not to hinder the work.

  Although not shown in the drawings, as another embodiment, the fall prevention rope 1 and the belt 2 with the choke base of Example 1 are used, and the belt 2 with the choke base that is wound around the trunk of the tree is lifted without being removed. There is also a way to ascend. However, in order to exchange obstacles such as branches, it is necessary to carry another belt 2 with a chalk base.

  The operator wraps the first belt 2 with the choke stand around the trunk of the tree in the same manner as in the first embodiment, connects one hook 13a of the fall prevention rope 1, and adjusts his / her height to the height position. Ascend while winding up the wound belt 2 with chalk base so that it does not become lower than the waist. And when there is an obstacle such as a branch and it cannot be lifted, wrap the second belt 2 with a choke base carried around the trunk on the upper side of the branch and connect the other hook 13b of the fall prevention rope 1 To do. When getting off, repeat the reverse procedure for rising. As a result, the worker is constantly connected to the trunk of the tree and can prevent a fall. This method can be used when the surface of the tree is relatively smooth.

1 Fall prevention rope 11 Rope 12 Third eye ring (mounting plate)
121 Rope connection hole 122a, 122b Hook connection hole 13a Hook (one hook)
13b Hook (the other hook)
14a, 14b U Shackle 15 Annular part 2 Belt with choke base 21 Belt body 22 Eye part 23, 24, 25 Annular part 3 Pillar safety belt 31 Main lanyard 32 Body belt 33 D ring 4 Step (single scaffold)
5 Fall Prevention Rope 51 Rope 52 Third Ring 521 Hook Locking Hole 53 Hook 54 U Shackle 6 Belt with Choke Stand 61 Belt Body 62 Hook 63, 64, 65 Ring 7 Fall Prevention Rope 71 Rope 72 Hook

Claims (5)

A tree lifting aid used when climbing up and down trees,
A fall prevention rope comprising a rope and two hooks, wherein the two hooks are connected in parallel to the tip of the rope;
An eye part formed of a belt is provided at one end of the belt, and an eye part formed in a ring shape with a size capable of engaging the hook hook part of the fall prevention rope, and the eye part can be inserted into the other end of the belt. A belt with at least two choke bases, provided with a plurality of ring portions formed in a ring shape;
A tree lifting assist tool. The choke base belt is constituted by a belt, and one end of the belt is provided with an eye portion formed in a ring shape having a size capable of locking the hook collar portion of the fall prevention rope, and the other end of the belt A plurality of ring portions formed in a ring shape with a size that allows the eye portion to be inserted,
2. The tree lifting assist tool according to claim 1, wherein the plurality of ring portions are each formed in a ring shape having the same diameter, and are continuously provided at equal intervals on the belt. The fall prevention rope includes a rope, a mounting plate, and two hooks,
The mounting plate is provided with two opposing hook connection holes, and a rope connection hole in the middle of the two hook connection holes,
The tree lifting assist tool according to claim 1, wherein the two hooks are connected in parallel to the two hook connecting holes, and the rope is connected to the rope connecting hole. When an operator lifts and lowers a tree using a lifting tool and a safety belt, the other end of the fall prevention rope having two hooks connected in parallel at one end is connected to a safety belt attached to the worker,
The first choke base belt is inserted at a position higher than the operator and the eye part is inserted into a predetermined ring part and wound around a tree, and one hook of the fall prevention rope is attached to the eye of the first choke base belt. A step (a) of engaging with the part, a step (b) in which the worker ascends until the first belt with the chalk base comes to the waist position of the worker, and a second belt with the chalk base separately. The eye part is inserted into a predetermined ring part at a position higher than the operator, wound around the tree, and the other hook of the fall prevention rope is locked to the eye part of the second choke base belt (c) And (d) removing one hook of the fall prevention rope from the eye part of the first choke base belt and removing the first choke base belt from the tree, and the second choke The belt with the base is the worker The worker rises step to come to the position of the hip (e), as one cycle,
By repeating the above steps or repeating the reverse procedure, at least one hook is connected to any one of the belts with the choke table at a position higher than the operator's waist from the start to the end of raising and lowering the tree. The tree raising / lowering method using the tree raising / lowering auxiliary tool in any one of Claims 1 thru | or 3. When an operator lifts and lowers a tree using a lifting tool and a safety belt, the other end of the fall prevention rope having two hooks connected in parallel at one end is connected to a safety belt attached to the worker,
A plurality of the belts with the chalk base are prepared,
The first choke base belt is inserted at a position higher than the operator and the eye part is inserted into a predetermined ring part and wound around a tree, and one hook of the fall prevention rope is attached to the eye of the first choke base belt. A step (a) of engaging with the part, a step (b) in which the worker ascends until the first belt with the chalk base comes to the waist position of the worker, and a second belt with the chalk base separately. The eye part is inserted into a predetermined ring part at a position higher than the operator, wound around the tree, and the other hook of the fall prevention rope is locked to the eye part of the second choke base belt (c) ), Removing one hook of the fall prevention rope from the eye part of the first choke base belt (d), and working until the second choke base belt is at the waist position of the operator. Process (e) where the person rises, The eye portion of the third choke base belt is wound around a tree by inserting the eye portion of the belt with the choke base at a position higher than the operator and passing the eye portion through a predetermined ring portion around the tree. A step (f) of locking to
Similarly, when ascending and descending to a predetermined position, repeat the same reverse procedure while sequentially removing from the belt with the chalk base installed last, from the start to the end of raising and lowering to the tree, from the waist of the operator The tree raising / lowering method using the tree raising / lowering assisting tool according to any one of claims 1 to 3, wherein at least one hook is connected to any one of the belts with the chalk base at a high position.

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