JP2012192495A - Panzer mast dismantling tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem wherein force applied to a screw jack is applied to fixing pieces when a fitting part rusts and is solidified to be hard in a conventional panzer mast dismantling tool, a torque works in a rotating direction with a fastening part as a fulcrum on the fixing piece sides, force for vertically pushing a surface of a panzer mast to lower ends of the fixing pieces is applied by the principles of a lever and a panzer mast is recessed.SOLUTION: This panzer mast dismantling tool includes: a pair of pushing pieces; a first fastening means for fastening the pair of pushing pieces to the panzer mast; jack means oscillably connected to each of the pair of pushing pieces; supporting tables for supporting each of the jack means; the fixing pieces for fixing each of the supporting tables; and a second fastening means for fastening each of the fixing pieces to the panzer mast on an upper side of the supporting tables.

Description

  The present invention relates to an apparatus for disassembling an assembling iron pillar used for a power transmission and distribution line and the like, and more particularly, to a dismantling tool for disassembling an assembling iron pillar called a panza mast while standing upright.

  A panza mast is an assembly-type iron pillar used for transmission and distribution lines. The panza mast is formed by stacking unit masts formed in a conical cylinder shape by pressing and welding high strength steel plates while fitting them in the axial direction. Each unit mast is lightweight because it is conical. Therefore, iron pillars can be established even in inconvenient places where heavy machinery cannot be installed.

  The panza mast that is no longer needed is dismantled and reused. This is because the panza mast is made of metal and may eventually oxidize over time and become brittle and collapse, and for the reuse of resources.

  Conventional dismantling of panza mast is a fitting part between unit masts using a wire rope, tension machine, hanging arrow, etc. after pulling up the constructed panzer mast from the ground using tools such as a pole, winch, crane etc. It was desorbed while hitting. Moreover, the method of cutting | disconnecting a unit mast main body with a gas cutter or an electric cutter was also employ | adopted.

  Further, there is a method of pulling between unit masts of inverted panza masts with a tensioning device (chain block) and pulling out each unit mast for dismantling (Patent Document 1).

  Patent Document 2 discloses a method of using a hydraulic jack to disassemble each unit mast in either a erected state or an inverted state (Patent Document 2).

  The method of disassembling the panza mast and disassembling each unit mast is a workable and easy dismantling method. However, in many cases, the panza mast is originally installed in a mountainous area or the like where the scaffolding is poor, and in many cases it is difficult to pull the panza mast from the ground and invert it.

  More specifically, the mating part that has been mated for many years cannot be easily detached because it is fixed, and requires more labor to disassemble than to install. It becomes. Therefore, it is necessary to secure a scaffold that is stronger than when assembling and a route for carrying in a wide range of equipment. However, such conditions may not be met in mountainous areas.

  In addition, even where the unit mast has been carried and assembled, there may be no place to invert the long panza mast. In view of the above, there is a need for a dismantling tool that can disassemble a panza mast that has been erected for each unit mast and is lightweight and easy to carry.

  The method using the hydraulic jack of Patent Document 2 has many advantages because the force for dismantling can be easily extracted. However, although it is small, the hydraulic jack is heavy, and it takes a lot of labor to lift it to a high place. Further, since the portion on which the hydraulic jack is applied is one side of the panzer mast, when the fitted unit mast is pulled out, a force is applied only to one side, and the fitting portion may be bitten.

  Patent document 3 is disclosing the tool used conventionally. This is a device that pulls out each unit mast using a screw jack, lever block or chain. Since the screw jack is disposed on the left and right side surfaces of the panza mast, it is possible to equally apply a pulling direction force to the rusted and hardened fitting portion. In addition, this apparatus is relatively convenient because it is relatively light in weight and can be easily lifted to a high place.

  FIG. 5 shows the disassembly tool of Patent Document 3. The disassembling apparatus 100 is mounted directly below the fitting portion between the upper unit column body 101 and the lower unit column body 102, and includes the first apparatus 103, the second apparatus 104, the first apparatus 103, and the second apparatus. It consists of a jack 105 connected between 104. The first device 103 includes a wire rope 131, two movable pieces 132 supported by the wire rope 131, and a movable piece 133 having a wire rope tensioning device 134 for tensioning the wire rope 131. .

  The second device 104 has a configuration similar to that of the first device 103, and includes a chain 141 and five fixed pieces 142 to 145 fixed or supported by the chain 141 (one in FIG. 3 is one). And a chain tensioning device 146 formed by two fixing pieces 144, 145 of them.

  Then, by fixing the first and second devices 103 and 104 to the panzer mast 102 and operating the jack 105, the first device 103 slides up the surface of the panzer mast 102, and the upper unit column body 101 is moved to the lower unit column. Lift from body 102.

JP-A-8-303059 Utility Model Registration No. 3103725 Japanese Utility Model Publication No. 62-29272

  Since the dismantling device of Patent Document 3 uses a lightweight screw jack, the panza mast can be lifted up to a high place, but after installation, the screw jack must be rotated manually. In addition, if the force is not applied symmetrically as much as possible, the fitting portion bites and becomes more difficult to disassemble.

  Further, since the screw jack 105 pushes up the movable piece 132 by using the lower fixed pieces 142 and 143 as reaction force, if the fitting part of the panza mast is rusted and hardened, the force applied to the screw jack 105 is increased. The fixed pieces 142 and 143 are applied. Then, on the fixed pieces 142 and 143 side, torque acts in the rotation direction with the fastening portion as a fulcrum, and a force that pushes the surface of the panther mast vertically to the lower end of the fixed piece works according to the lever principle.

  The panza mast to be dismantled is often fragile, and cannot resist this force, causing a problem that the surface is recessed. In the method of dismantling with the panza mast erected, the unit mast is pulled out in order from the upper unit mast, so if the surface of the panther mast is recessed at the fixed piece below the dismantling tool, the reaction force receiver that pulls out the upper unit mast is pulled. At the same time as losing, it becomes difficult to pull out the lower unit mast.

  The present invention has been conceived in view of the above problems, and provides a disassembly tool that disassembles each unit mast with the panza mast erected, and that does not easily damage the panther mast with the force applied during disassembly. Is.

More specifically, the panzamast dismantling tool of the present invention is
A pair of push-up pieces,
First fastening means for fastening the pair of lifting pieces to the panza mast;
A jack means swingably connected to each of the pair of push-up pieces;
A support for supporting each of the jack means;
A fixing piece for fixing each of the support bases;
And a second fastening means for fastening each of the fixed pieces to the panther mast above the support base.

  Further, the push-up piece has a magnet.

Further, the jack means includes a movable rod connected to the push-up piece, a jack that expands and contracts the movable rod by rotating, and a gear that is concentric with the rotation shaft of the jack at the end of the support base of the jack. And
The support base includes a speed reduction unit that engages with the gear and exposes a drive shaft.

  In the panther mast dismantling tool of the present invention, the fixing piece is fastened to the panzer mast above the position of the reaction force receiving of the fixed piece. Therefore, the force (force point) that pushes the surface of the panther mast with the tightening position of the fixing piece as a fulcrum is It becomes the same position as (support stand). Therefore, the lever principle does not work and the surface of the panza mast is not easily damaged.

  In addition, since the contact surface between the fixed piece and the panther mast can be formed above the position of the support base, the installation area of the fixed piece can be increased without increasing the length of the panther mast dismantling tool itself, and the reaction force The receiving area can be widened. That is, it is difficult to damage the surface of the panza mast.

  Therefore, even if a reduction gear is provided on the screw jack so that jacking up can be performed with a greater force, a force can be applied to the fitting portion without denting the panther mast.

  Furthermore, by driving the drive shaft of the reducer with an electric motor or the like, the screw jack can be rotated with a larger torque, and an electric motor can be used to jack up the unit mast that has once been disengaged. It can be lifted easily.

  In addition, since the magnet is disposed on the push-up piece, when the push-up piece is first attached to the panzer mast, the push-up piece is attracted to the iron pan pan mast, and the fixing piece is easily tightened.

It is a figure which shows the structure of the panther mast dismantling tool of this invention. FIG. 2 is a partially enlarged view of FIG. 1. FIG. 2 is a partially enlarged view of FIG. 1. It is a figure explaining the effect | action of the fixed piece of the panther mast dismantling tool of this invention. It is a figure which shows the structure of the conventional panther mast dismantling tool.

  Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a panther mast dismantling tool 1 of the present invention (hereinafter also simply referred to as “dismantling tool 1”). The figure shows the state fixed to the panther mast. 2 and 3 are partially enlarged views of FIG. 1, and will be referred to as appropriate. Even in the case where a pair of components indicated by reference numerals is described as being a pair in this specification, there is a case in which only one of them is indicated in FIG. 2 or FIG. However, the symbols are not explicitly shown in the drawings and actually exist.

  The panther mast dismantling tool 1 of the present invention includes a pair of push-up pieces 2a and 2b (hereinafter simply referred to as “push-up piece 2” when described without distinction) and jack means 3a and 3b connected to them swingably. (Hereinafter, simply described as “jack means 3” when described without distinction) and support bases 4a and 4b that support the jack means 3 (hereinafter referred to as “support base 4” when described without distinction). The first and second fixing pieces 5a and 5b for fixing the support base 4 (hereinafter simply referred to as “fixing piece 5” if not described in distinction), the push-up piece 2 and the fixing piece 5 are fastened to the panther mast 9. 2 fastening means 6, 7.

  The push-up piece 2 has at least a pair (2a, 2b) and is installed on the surface of the panther mast 9 in the substantially diametrical direction. The number of push-up pieces 2 is not particularly limited to two. If there are multiple, install them at equal angles. This is to apply a force evenly to the panza mast 9 along the circumference of the fitting portion 10. However, it is simplest for one worker to apply force equally to the push-up piece 2 with both hands, so at least a pair is sufficient. The upper unit mast in FIG. 1 is denoted by reference numeral 9a, and the lower unit mast is denoted by reference numeral 9b.

  Magnets are disposed on the surfaces 2af and 2bf of the push-up piece 2 that are in contact with the surface of the panther mast 9. This is because it is adsorbed on the surface of the iron panza mast 9. As will be described later, the disassembling tool 1 of the present invention is often divided into individual parts to be lifted on the panther mast 9 and assembled from the push-up piece 2 downward. Further, since the push-up piece 2 is arranged and tightened at a position corresponding to a 180 ° relationship on the peripheral surface of the panza mast 9, when it is attracted to the panza mast 9, the push-up piece 2 is easily tightened and workability is remarkably improved.

  Referring to FIG. 2, the push-up piece 2 has an upper end 2 at and 2 bt (hereinafter simply referred to as “upper end 2 t” when referred to without distinction) on an end surface (lower end surface) 10 t of the fitting portion 10 of the unit mast to be disassembled. To be placed in contact). This is because the upper end 2t of the push-up piece 2 is pushed up from below and the upper unit mast 9a is pushed up and disassembled. The lower end surface 10t of the fitting portion 10 of the upper unit mast 9a is the lower end surface 10t of the upper unit mast 9a, and is an annular surface that is substantially perpendicular to the side surface of the upper unit mast 9a and has the thickness of the upper unit mast 9a. is there.

  The upper end 2t of the push-up piece 2 does not need to have a special shape. However, the lower end surface 10t of the upper unit mast 9a has only a plate thickness 9t of the upper unit mast 9a of about 1 to 2 mm, and the lower end surface 10t must be pushed up efficiently. Therefore, the upper end 2t of the push-up piece 2 preferably has a surface formed in a direction perpendicular to the surface of the panther mast 9 from a position as close as possible to the surface of the panther mast 9.

  Below the push-up piece 2, there are connecting portions 2aj and 2bj to the jack means 3 (hereinafter simply referred to as “connecting portion 2j” when described without distinction). The structure of the connecting portion 2j with the jack means 3 is not particularly limited as long as the jack means 3 can swing at least in the direction away from the surface of the lower unit mast 9b with the connecting portion 2j as a pivot. This is because as the upper unit mast 9a is pushed up, the angle θ formed between the jack means 3 and the lower unit mast 9b becomes smaller, so that it is necessary to be able to swing in this direction.

  Further, the push-up piece 2 includes holding portions 2av and 2bv for the first tightening means 6 to hold the push-up piece 2 to the lower unit mast 9b (hereinafter referred to simply as “holding portion 2v”). Is formed.). This is because the push-up piece 2 needs to be brought into pressure contact with the surface of the panther mast 9 so that the upper end 2t of the push-up piece 2 can effectively push up the lower end face 10t of the upper unit mast 9a. The holding part 2v may be a hole or a groove.

  Referring to FIG. 1 again, the first tightening means 6 is not particularly limited as long as it can restrain the push-up piece 2 to the surface of the panther mast 9. Although the push-up piece 2 is fastened to the surface of the panther mast 9, the push-up piece 2 is moved upward by the jack means 3, and therefore, a method that can be fastened to a movable degree is desirable. More specifically, a cloth band, a wire rope, or the like can be used.

  The jack means 3 is connected to each push-up piece 2. Accordingly, there are at least a pair (3a, 3b) of jack means 3, which are connected to the respective push-up pieces 2a, 2b. The jack means 3 is preferably a screw jack, but may be another jack. This is because there is a case where the work is performed in an environment where it can be lifted up to the work place even if the weight is slightly increased. The screw jack expands and contracts the movable rod by rotating about the axis in the length direction as the movable rods 3av and 3bv (hereinafter simply described as “movable rod 3v” when there is no distinction). It consists of jacks 3aj and 3bj (hereinafter simply described as “jack 3j” when described without distinction).

  The screw jack usually has a shape in which a movable rod 3v is inserted into a cylindrical jack 3j. A male screw is formed on the side surface of the movable rod 3v, and a female screw that is screwed into the male screw is formed at the tip of the jack 3j. When the jack 3j rotates around the longitudinal axis, the jack means 3 expands and contracts as the male screw of the movable rod 3v screwed to the female screw advances or retreats. The relationship between the male screw and the female screw provided on the movable rod 3v and the jack 3j may be reversed.

  Referring to FIG. 3, the jack 3j may be formed with gears 3ag and 3bg for rotating the jack 3j (hereinafter simply referred to as “gear 3g” when described without distinction). . This is because it is effective to rotate the jack 3j with a tool for rotating it in order to reduce work effort. The gear 3g may be provided at the lower end of the jack 3j. This is because the gears 3g provided at the lower end of the jack 3j can be easily engaged with the speed reducers 12a and 12b (hereinafter simply referred to as “the speed reducer 12” when described without distinction).

  The lower end of the jack means 3 is supported by a support base 4. Since the reaction force of the force applied by the jack means 3 to the push-up piece 2 is applied to the support base 4, it is formed firmly. Further, it also serves as a connecting member for connecting the fixed piece 5 and the jack means 3. The support base 4 may be formed integrally with the fixed piece 5. That is, the support base 4 is a portion where the jack means 3 is connected to the fixed piece 5, and it does not matter whether it is formed integrally with the fixed piece 5 or separated from the fixed piece 5.

  A reduction gear 12 that engages a gear 3 g provided at the lower end of the jack means 3 may be mounted on the support base 4. The speed reducer 12 can rotate the gear 3g at the lower end of the jack 3j by increasing the rotational torque of the drive shaft. In particular, since a large force is required to start moving the upper unit mast 9a, if a large rotational torque can be obtained by the speed reducer 12, a force can be applied to the push-up piece 2 with a large force. In addition, the reduction gear 12 and the support stand 4 may be made integrally.

  Referring to FIG. 1 again, the drive shafts 12ad and 12bd for driving the speed reducer 12 (hereinafter simply referred to as “drive shaft 12d” when described without distinction) may be provided in either direction. However, the operator is positioned facing the panzer mast 9 and operates the dismantling tool 1 while looking at the fitting portion 10 of the upper unit mast 9a. Then, since the operator's hand is directed to both sides of the panther mast 9 or opposite surfaces, the operator's hand is preferably directed upward in parallel with the jack means 3 or toward the operator. Of course, the speed reducer 12 may be installed so as to be able to swing at a certain angle with respect to the support 4 or the fixed piece 5 so that the angle of the drive shaft 12d can be varied.

  The drive shaft 12d may be provided with a connecting portion to the drive shaft of the electric motors 14a and 14b (hereinafter simply referred to as “electric motor 14” when described without distinction). The electric motor 14 can obtain a large rotational torque with a single switch operation by using a commercially available handheld electric drill or electric screwdriver, and the operator can fit between the upper unit mast 9a and the lower unit mast 9b. Work can be done while gazing at the joint 10.

  When the electric motor 14 is used, a driver having a predetermined shape is fixed to the electric motor 14. A receiver fitted to the tip of the driver is provided at the tip of the drive shaft 12d. Also, fixing frames 15a and 15b for fixing the electric drill itself to the support base 4 (or the speed reducer 12) so that the rotational torque of the electric motor 14 does not return to the operator's hand as it is. (Referred to as “fixed frame 15”). For example, the fixed frame 15 is preferably provided with a frame that fits in a cross section that is not a circle in the outer shape of the electric motor 14. This is to prevent the electric motor 14 itself from rotating due to the rotation of the electric motor 14.

  With the configuration as described above, the electric motor 14 can be attached and detached simply by inserting the electric motor 14 into the fixed frame 15, and the operation for connection with the drive shaft 12d becomes unnecessary. Work becomes easy. Of course, the speed reducer 12 is provided for each jack means 3.

  The fixed piece 5 is a plate material having a predetermined length in the length direction of the panther mast 9. The fixed piece 5 is prepared for each jack means 3 and support base 4. Therefore, in the disassembling tool 1 of the present invention, the push-up piece 2, the jack means 3, the support base 4, and the fixed piece 5 each have at least one pair, that is, two each.

  Referring to FIG. 3 again, like the push-up piece 2, the fixed piece 5 is pressed against the panzer mast 9 (referred to simply as “push-contact surface 5 f” hereinafter). Magnets 20a and 20b (hereinafter simply referred to as “magnet 20” when described without distinction) may be disposed. This is because when the support 4 is attached to the fixed piece 5, if the fixed piece 5 can also be attracted to the panzer mast 9, workability is improved. The support 4 is fixed to the fixed piece 5. In the dismantling tool 1 of the present invention, the support base 4 is fixed below the fixed piece 5. Then, the fixing pieces 5 are fastened by the second fastening means 7 above the support 4.

  In addition, when providing the magnet 20 in the fixed piece 5, it is necessary to provide the magnet 20 so that the area of the pressing surface 5f may not become small. This is because, as will be described later, the area of the pressing surface 5f is preferably larger because the force from the jack means 3 is distributed and received. In FIG. 3, the magnet 20 is sandwiched between the pressing surface 5f of the fixed piece 5 and the surface of the lower unit mast 9b. In this case, the pressing surface 5f is the surface of the magnet 20 and the upper unit mast 9a. It becomes the adsorption surface.

  The tightening positions 5ax and 5bx (hereinafter simply referred to as “tightening position 5x” when not distinguished from each other) to which the second tightening means 7 is tightened are positions where the support 4 is fixed to the fixing piece 5. 5ay, 5by (hereinafter referred to as “fixed position 5y” when described without distinction) above (the push-up piece 2 side). As will be described later, by making the relationship between the fixing position 5y of the support base 4 supporting the jack means 3 and the tightening position 5x in this way, the pressing force to the panther mast 9 can be reduced, and the dismantling work is performed. However, there is almost no risk that the lower unit mast 9b is recessed.

  Further, it is preferable that the upper ends 5 au and 5 bu of the fixed piece 5 (hereinafter simply referred to as “upper end 5 u” when described without distinction) extend in the direction of the push-up piece 2. This is because the pressing force to the panther mast 9 can be dispersed by extending the upper end 5u in the direction of the push-up piece 2 and increasing the pressure contact area 5S of the fixed piece 5 to the panther mast 9. The pressing area of the fixed piece 5 is determined by the pressing surface 5f. However, as described above, when the magnet 20 is sandwiched therebetween, the area of the magnet 20 is the pressing area 5S.

  Similarly to the first tightening means 6, the second tightening means 7 may use a chain or a metal wire in addition to the cloth band or the rope. This is because the fixed piece 5 needs to be securely fixed to the panther mast 9.

  Next, the operation of the dismantling tool 1 of the present invention, particularly the structure of the fixed piece 5, will be described in detail. FIG. 4 is a diagram for explaining the operation of the fixed piece (FIG. 4A) of the prior art (Patent Document 3) and the fixed piece of the present invention (FIG. 4B). In the conventional fixing piece 50, the lower part of the receiving surface (upper surface) 50 f of the substantially triangular fixing piece 50 receiving the force Fj from the jack means 30 is fixed to the panther mast 59 by the tightening means 70. The jack means 30 is supported by the upper surface 50f of the fixed piece 5, and belongs to the case where the support base 4 and the fixed piece 5 referred to in the present invention are integrally formed.

  In the case of the configuration as in the conventional example, the reaction force receiver of the jack means 30 is the upper surface 50f of the fixed piece 50 and is located above the tightening means 70. Then, the upper surface 50f of the fixed piece 50, the tightening means 70, and the lower end 50b of the fixed piece 50 serve as a force point, a fulcrum, and an action point, respectively, and a large force Fp is applied to the lower end 50b of the fixed piece 50 in the direction of pushing the surface of the panther mast 59 inward. Will be added. Moreover, if the distance from the tightening means 70 to the lower end 50b of the fixed piece 50 is shorter than the distance from the surface of the panza mast 59 to the reaction force receiving (the receiving face 50f that is the upper surface of the fixed piece), the reaction force received from the jack means 30 is amplified. Then, the surface of the panza mast 59 is pressed.

  On the other hand, in the configuration of the present invention (FIG. 4 (b)), the fulcrum (tightening position 5x fixed by the fastening means 7) that changes the reaction force received from the jack means 3 to the surface of the panther mast 9 is the reaction point. Since it is above the point of the force receiver (support base 4), the lever principle does not work in the direction in which the surface of the panther mast 9 is recessed. The point of action is the upper end 5u of the fixed piece 5 because the force Fu acts on the upper end 5u of the fixed piece 5 in a direction away from the surface of the panther mast 9. The force pushing the surface of the panther mast 9 is only the component force Fi of the force Fj from the jack means 3.

  Moreover, even if the fixed piece 5 is extended upward, the length of the dismantling tool 1 itself does not increase. Therefore, since the reaction force from the jack means 3 can be received by the wide surface 5S, the force Fi for denting the surface of the panther mast 9 can be dispersed. In this regard, in the configuration of the conventional example, in order to reduce the force Fp to the surface of the panther mast, it is necessary to extend the lower end 50b of the fixed piece 50 downward. This increases the convenience of handling.

  Next, the usage method of the dismantling tool 1 of this invention is demonstrated. Refer to FIG. 1 again. An operator carries the dismantling tool 1 of the present invention in an individual part or assembled state. Since the panza mast is stacked while the unit mast is fitted, the operator climbs to a position where the fitting unit between the top unit mast and the second unit mast is easy to see.

  In addition, the top unit mast is provided with fishing means or the like so that it can be lifted and lowered to the ground when the fitting portion with the second unit mast is detached.

  After securing the work scaffold, the worker brings the push-up piece 2 into contact with the lower end surface of the top unit mast. In FIG. 1, the position is indicated by a two-dot chain line. Since the magnet 20 is incorporated in the push-up piece 2, it is easily attracted to the iron panza mast. The push-up piece 2 is attached at a position facing the diameter direction of the panther mast, and is fixed to the second unit mast by the first tightening means 6.

  Next, the jack means 3 and the like are assembled. In the case of the dismantling tool 1 that has already been assembled, the fixing piece 5 is fixed to the second unit mast by the second tightening means 7.

  When the panzer mast dismantling tool 1 is attached to the second unit mast, the electric motor 14 is inserted into the fixed frame 15. As described above, the electric motor 14 can be connected to the drive shaft 12 d of the speed reducer 12 simply by being inserted into the fixed frame 15.

  While gazing at the fitting portion between the top unit mast and the second unit mast, the electric motor 14 is operated to raise the fitting portion 10 upward. At this time, even if the fitting portion 10 is rusted and fixed, as described above, if the fixing piece 5 does not move downward, there is no fear of the surface of the panther mast being depressed. You may operate. Further, since the electric motor 14 does not run idle by the fixed frame 15, the torque of the electric motor 14 can be transmitted to the speed reducer 12 without loss.

  When the first movement starts, the unit mast at the top can be easily pulled up by the jack means 3 thereafter. At this time, the jack means 3 does not expand unless the drive shaft 12d is rotated by the speed reducer 12, but since the electric motor 14 is provided, the operator can lift the unit mast at the top only by operating a button. The raised state is the position of the push-up piece 2 shown by the solid line in FIG. After that, lift the top mast and lower it to the ground. Then, the tightening of the panza mast dismantling tool 1 is loosened, the next unit mast is moved, and the same operation is repeated again.

  As described above, if the disassembling tool of the panther mast according to the present invention is used, even if the fitting portion between the unit masts is fixed, a force can be applied in the direction of pulling out the unit mast without denting the panther mast. It is very useful for dismantling Panzamast installed in places where it is difficult to carry in large equipment, such as mountainous areas where the weather is severe, and where fitting parts are likely to stick due to severe wind and rain.

1 Panzer mast dismantling tool 2, 2a, 2b Pushing piece 2af, 2bf Contact surface 2j, 2aj, 2bj of the raising piece 2z, 2at, 2bt Upper end 2v, 2av, 2bv Holding part 3, 3a, 3b Jack means 3v, 3av, 3bv Movable rod 3j, 3aj, 3bj Jack 3g, 3ag, 3bg Gear 4, 4a, 4b Support base 5, 5a, 5b Fixing piece 5f, 5af, 5bf Pressing surface 5x, 5ax, 5bx Tightening position 5y, 5ay, 5by fixed position 5u, 5au, 5bu upper end 5S pressure contact area 6 first fastening means 7 second fastening means 9 panther mast 9a upper unit mast 9b lower unit mast 9t unit mast thickness 10 fitting part 10t lower part End face 12, 12a, 12b Reducer 12d, 12ad, 12bd Drive shaft 14 14a, 14b electric motors 15, 15a, 15b fixed frame 20, 20a, 20b magnets 30 lower end 50f receiving surface of the jack means 50 fixed piece 50b fixed piece (top)
59 Panzamast 70 Tightening means 100 Dismantling device 101 Upper unit column body 102 Lower unit column body 103 First device 104 Second device 105 Jack 131 Wire rope 132, 133 Movable piece 134 Wire rope tensioning device 141 Chain 142-145 Fixed piece 146 Chain tensioning device

Claims (3)

A pair of push-up pieces,
First fastening means for fastening the pair of lifting pieces to the panza mast;
A jack means swingably connected to each of the pair of push-up pieces;
A support for supporting each of the jack means;
A fixing piece for fixing each of the support bases;
A panther mast dismantling tool having second tightening means for tightening the respective fixing pieces to the panther mast above the support base.   The panza mast dismantling tool according to claim 1, wherein the push-up piece includes a magnet. The jack means has a movable rod connected to the push-up piece, a jack that expands and contracts the movable rod by rotating, and a gear that is concentric with the rotating shaft of the jack at the support base end of the jack,
The panza mast dismantling tool according to claim 1, wherein the support base includes a speed reduction unit that engages with the gear and exposes a drive shaft.