JP5870463B1 - Holding type coil lifter and its coil holding method - Google Patents

Abstract

An object of the present invention is to hold a coil lifter with good operability, in which only one of a plurality of slit coils temporarily placed in an upright state can be safely taken out and can be placed side by side with little or no gap at the moving destination. I will provide a. A pair of holding arms 2 that are supported in a hanging direction from a holding machine body frame 1 that is supported by hanging means such as a crane and that are moved up and down, and that face each other and rotate in an opening and closing direction. The main body frame 1 is provided with a push-down shaft 10 that is moved downward by an actuator, and the lower surface of the push-down shaft 10 is added with the top surface of the coil B that supports the lower half side outer surface at the tips of both holding arms 2 in the push-down direction. Hold the coil under pressure. [Selection] Figure 1

Description

  The present invention mainly relates to a holding-type coil lifter that lifts and moves a slit coil while supporting the lower surface of the lower half side of the coil with a pair of holding arms, and a method of lifting the holding coil.

  Generally, there is a coil lifter that moves a coil in which a metal strip such as a strip is wound in a ring shape. In this conventional coil lifter, a support claw inserted into the inner peripheral surface of the coil is projected on the surface facing the tip of a pair of vertical suspension arms, and this is inserted into the center hole of the coil from both ends of the coil. A type that is inserted and lifted (for example, Patent Document 1), and a lifting arm on the upper side of a horizontal U-shaped hanging bracket is hung with a crane, and a lower supporting arm is inserted into the center hole from one side of the coil and lifted. There is a C-type coil lifter (for example, Patent Document 2).

  In addition to a type that lifts by inserting a support claw or support arm into the center hole of the coil, a structure in which the tip of a pair of arc-shaped holding arms is applied to the outer surface of the lower half side of the coil and lifted by both arms (For example, Patent Document 3)

JP 2008-56369 A JP 2005-115128 A Japanese Patent Laid-Open No. 2003-276979

  Among the conventional coil lifters as described above, a type in which support claws are provided on the opposed surfaces of a pair of suspension arms as shown in Patent Documents 1 and 2, or a coil lifter using a C-shaped suspension bracket is lifted.・ If there is enough space on the side of the coil to allow insertion of a C-shaped bracket or a suspension arm with protruding support claws, it is easy to work and highly safe. For example, it cannot be used when there is no space for inserting a metal fitting for lifting between the coils, such as a slit coil that is temporarily placed and immediately after manufacture.

  In addition, in the coil lifter for slit coil of the type that lifts the lower side of the coil by using the pair of holding arms described above, the coil lifter for holding the lower side of the coil holds the coil down. For this reason, in the cited document 3, the arm for preventing the fall is lowered outside both sides of the coil held by the holding arm in order to prevent the fall. Immediately after that, if you try to hold one of the slit coils temporarily placed with a slight gap, the fall prevention arm cannot be inserted between the slit coils, and it may fall down when you lift it up. There was a problem that it was not possible to ensure the safety.

  In addition, narrow slit coils tend to fall when temporarily placed in a self-standing state, so they may be placed leaning against adjacent coils or fall-preventing walls. It is necessary to get upright from the state of leaning on the adjacent coil or wall, and the weight of the coil is large, so it is easy to cause an accident that it falls to the side opposite to the leaning side during the raising work There is a problem that an accident occurs in which the coil is damaged, or in some cases, the operator is caught on the fall side.

  In the present invention, in view of such conventional problems, only one of a plurality of slit coils that are temporarily placed in an upright state with a gap of about the cutter width at the time of manufacture, such as a slit coil immediately after manufacture, can be safely obtained. In addition, the holding type coil lifter and its lifting method can be arranged with a slight gap or no gap at the moving destination, and has good operability when operated with a lifting means such as a crane. It was made for the purpose of provision.

The feature of the invention described in claim 1 for solving the conventional problems as described above is that the holding device main body frame supported by hanging means such as a crane and moved up and down, and supported from the frame toward the hanging direction. A pair of holding arms that face each other and rotate in the opening and closing direction, and are interposed between the back center height portion of each holding arm and the holding device main body frame, and are extended and contracted, thereby extending the tips of the holding arms. has a pair of telescopic actuators but to open and close operation had direction and opening direction to approach each other, and depressed shaft to and from downwardly to said faces machine body frame, and a pad depressed to the lower end of the depressed axis, wherein both faces Insert the tip of the arm under the outer surface of the lower half of the coil, push the push-down shaft downward with the push-down pad in contact with the top surface of the coil, and The tip of the both faces arms by increasing the suffering machine body frame by the reaction force depressing the causes support the lower half side outer surface of the coil at the tip of the two faced arms in contact with the half-side outer surface under the coil that While holding the coil in a state where the top surface of the coil is pressed in the pressing direction with a pad, the coil is supported by the both holding arms and the pressing pad by lifting the holding device main body frame by the hanging means. It is in a holding coil lifter that is designed to be moved .

  According to a second aspect of the present invention, in addition to the structure of the first aspect, a slide frame is fixed upward on the holding machine main body frame, and is vertically relative to the slide frame by a predetermined length. The suspension frame is fitted so as to be movable, and the suspension frame is lifted and lowered by a lifting means such as a crane.

The feature of the invention described in claim 3 is that the holding device main body frame supported by a suspension means such as a crane and moved up and down, supported in the hanging direction from the frame, and facing each other and rotating in the opening and closing direction. The holding machine main body frame has a push-down shaft that is moved downward by an actuator, a push-down pad is attached to the lower end of the push-down shaft, and the tips of both the holding arms are placed under the coil. Insert the lower half of the outer surface, push the push-down shaft downward with the push-down pad in contact with the top surface of the coil, and lift the machine body frame by the reaction force against the coil. The tip of the holding arm is brought into contact with the outer surface of the lower half of the coil so as to hold the coil, and the slide frame is fixed upward on the holding machine body frame. Using a holding type coil lifter in which a hanging frame is fitted to the slide frame so that it can move up and down by a predetermined length, and the entire holding type coil lifter is lifted by supporting the hanging frame on a hanging means. The holding arm is opened and lowered with respect to the coil, the pressing pad is brought into contact with the top surface of the coil, and the load of the holding-type coil lifter is supported by the coil, and further, a predetermined length. Only by lowering the suspension frame, it is moved downward relative to the slide frame, then the holding arm is moved in the closing direction and both ends thereof are inserted below the outer surface of the lower half side of the coil, Thereafter, the push-down shaft is moved downward and the holding pad main body frame is raised by taking a reaction force on the coil top surface by the push-down pad. Further, the holding type lifter holding the coil is moved by contacting the lower half side outer surface of the coil at the tip of the both holding arms and then lifting the hanging frame by the hanging means. There is a method of lifting the coil lifter.

According to the present invention, suffers Coil lifter, the Idaku example machine body frame, provided with a depressed shaft to and from downwards by the actuator, pad depressed to the lower end of the depressed shaft is mounted, wherein the tip of said both faced arms By supporting the outer surface of the lower half side of the coil and holding the coil in a state where the top surface of the coil is pressed in the pressing direction with the pressing pad, a slit coil or the like in a temporary placement state immediately after manufacturing Thus, even when there is not a sufficient gap between the coils, the coil can be held at an arbitrary position, and the coil is moved in a three-point instruction state with both holding arms and a pressing pad. Therefore, it can be operated safely without causing an accident such as a fall.

According to the present invention , the tips of both holding arms are inserted below the outer surface of the lower half side of the coil, and the pressing shaft is pushed downward while the pressing pad is in contact with the top surface of the coil. By lifting the holding machine body frame with force, the tips of both holding arms are brought into contact with the outer surface of the lower half side of the coil so that the coil is held. Since the coil is supported by the pad and the holding arm is operated in a state in which the coil is prevented from falling, the holding operation by the holding arm is performed safely and stably.

The present invention is, for between push above suffers machine body frame and lowering shaft, comprises a cushion spring which biases the depressed shaft below the extrusion direction, the elastic force of the cushion spring, depressed in the depressed shaft tip By applying the coil top surface pressing force by the pad, the pad pressure for pressing when holding the coil becomes the strength set in advance by the cushion spring, and it is pressed with a constant pressure regardless of the operation of the operator Therefore, higher safety can be obtained.

The present invention is Idaku example machine body frame are slide frame is upwardly fixed, fitted hanging frame in relatively movable in the up and down by a predetermined length with respect to the slide frame, the the hanging Ri frame crane, etc. The lifting frame is lifted by the lifting means so that when the holding machine body frame is raised to bring the tip of the holding arm into contact with the outer peripheral surface of the lower side of the coil, the lifting frame is increased by the rising length. Thus, the coil holding operation can be performed without changing the suspension height by the suspension means, and the operability is improved.

Suffer lifting method suffers Coil lifter according to the present invention, the faces machine body frame which is moved up and down and is supported by the hanging means, such as a crane, is supported towards the hanging direction from the frame, the opening and closing directions opposite to each other A pair of holding arms that rotate to each other, and the holding machine body frame is provided with a pressing shaft that is moved downward by an actuator, and a pressing pad is attached to the lower end of the pressing shaft, and the tips of the both holding arms Is inserted under the outer surface of the lower half side of the coil, the pressing shaft is pushed downward with the pressing pad in contact with the top surface of the coil, and the machine body frame is raised by the reaction force against the coil. Thus, the ends of the holding arms are brought into contact with the outer surface of the lower half side of the coil so as to hold the coil, A holding-type coil lifter in which a frame is fixed upward and a suspension frame is fitted so that the frame can be moved up and down by a predetermined length with respect to the slide frame is used. The entire coil lifter was lifted, lowered with respect to the coil with the holding arm open, and the pushing pad was brought into contact with the top surface of the coil to support the load of the holding coil lifter on the coil Thereafter, the suspension frame is further lowered by a predetermined length so as to move downward relative to the slide frame, and then the holding arm is moved in the closing direction so that both ends thereof are on the lower half side of the coil. The holding machine body is inserted under the outer surface, and then the push-down shaft is moved downward and the reaction force is applied to the coil top surface by the push-down pad. By raising the ram, the tips of the holding arms are brought into contact with the outer surface of the lower half side of the coil, and then the holding frame lifter holding the coil is moved by lifting the hanging frame by the hanging means. By doing so, like the slit coil immediately after manufacture, it has a gap about the cutter width at the time of manufacture, and only one piece is safely taken out from a plurality of slit coils temporarily placed in an upright state, At the destination, they can be placed side by side with little or no gap, and the operability when operated by a lifting means such as a crane is improved.

It is a side view showing the whole example of implementation of a holding type coil lifter concerning the present invention. It is a vertical side view which shows the pushing down mechanism of the holding | maintenance type coil lifter same as the above, the frame for a slide, and the frame for suspension. It is a longitudinal front view same as the above. (A)-(c) is process drawing which shows the first half side of the coil raising operation | movement by the holding | maintenance type coil lifter shown in FIG. (D)-(e) is process drawing which shows the latter half side of the coil raising operation | movement by the holding | maintenance type coil lifter shown in FIG. (A)-(c) is process drawing which shows the first half side of a coil descent | fall operation | movement from the coil raising state by the holding | maintenance type coil lifter shown in FIG. (D)-(e) is process drawing which shows the latter half side of coil descent | fall operation | movement from the coil raising state by the holding | maintenance type coil lifter shown in FIG.

  Next, an embodiment of the holding type coil lifter according to the present invention will be described based on the embodiment shown in FIGS.

  In the figure, A denotes a holding coil lifter according to the present invention, B denotes a slit coil, C denotes a table for the slit coil B, and 1 denotes a holding machine main body frame that is lifted and lowered by hanging means such as a crane. ing. Reference numeral F denotes a power source battery mounted on the holding machine body frame 1.

  A pair of holding arms 2 and 2 are supported downward on the holding machine body frame 1. The holding arms 2 and 2 are formed in an arc shape in which the sides facing each other are concave, and the upper ends of the holding arms 2 and 2 are rotatably supported by support shafts 3 and 3 parallel to the holding device main body frame 1.

  Electric cylinders 4 and 4 which are telescopic actuators are interposed between the center height of the back surface of the respective holding arms 2 and 2 and the holding machine body frame 1. The two and two tips are opened and closed in a holding direction and an opening direction in which they approach each other. Each electric cylinder 4, 4 is provided with a closing limit switch 6, 6 that is operated at the closing operation of the holding arms 2, 2, that is, at the end of the operation on the coil holding side.

  Holding pads 5 and 5 are attached to the tips of the holding arms 2 and 2 in a detachable manner so as to come into contact with the lower outer peripheral surface of a coil to be described later.

  A push-down mechanism 10 is provided at the center position of the support shafts 3 and 3 of the holding arms 2 and 2 of the holding machine body frame 1. The push-down mechanism 10 prevents the tilt coil B from being tilted by pressing the upper surface of the slit coil B, and as shown in FIGS. And a push-down shaft 12 fitted in the guide cylinder 11 so as to be movable up and down, and an electric cylinder 13 which is a telescopic actuator for moving the push-down shaft 12 up and down relatively with respect to the holding device body frame 1. Have.

  At the lower end of the push-down shaft 12, a push-down pad 14 for detachably fixing to the top of the slit coil B is fixed. When the slit coil B is lifted, The slit coil B is supported at three points with the two holding pads 5 and 5 at the tips of the holding arms 2 and 2 described above.

  On the upper surface of the holding machine main body frame 1, a rectangular tube type slide frame 20 is fixed coaxially with the upper end side extension portion of the guide cylinder 11 described above, and is provided in an arrangement in which the upper end side protrudes upward.

  In the slide frame 20, the upper end of the support shaft 21 for the push-down shaft 12 is inserted into a trunnion 22 fixed to the slide frame 20 so as to be movable in the axial direction. A limit plate 26 is fixed to the upper end of the support shaft 21 by a nut 27 on the trunnion 22.

  The upper end of the electric cylinder 13 is connected to the lower end of the support shaft 21 via a universal joint 23 using clevis. The push-down shaft 12 is connected to the lower end of the electric cylinder 13 via a universal joint 24.

  A cushion spring 25 is fitted on the outer periphery of the support shaft 21 between the trunnion 22 and the universal joint 23. The cushion spring 25 is configured by stacking a number of disc springs with their orientations alternately changed.

  The cushion spring 25 urges the support shaft 21 downward so that the limit plate 26 is in pressure contact with the trunnion 22.

  The insufficiency due to the cushion spring 25 has a strength that does not bend even when the weight of the sliding frame 20 of the holding type coil lifter A or less is applied in the compression direction. 14 and holding the slit coil B at three points of the holding pads 5 and 5 at the tips of the holding arms 2 and 2, and then when the electric cylinder 13 is operated in a direction to further push down the pressing pad 14, The strength is set to be bent by the operating force.

  A suspension frame 30 is fitted to the slide frame 20 so as to be movable up and down by a predetermined length. The suspension frame 30 is formed in a rectangular tube shape, and is fitted to the outside of the slide frame 20 via a slide plate 31 as shown in FIG.

  A long slot 32 that is long in the vertical direction is formed in the slide frame 20, and the slide pin 33 that penetrates the suspension frame 13 is fitted in the slot 32 while being prevented from coming off. The pin 33 can move in the inner hole 32 by the length, and thereby the relative movement length of the suspension frame 30 with respect to the slide frame 20 is regulated.

  A hook pin 34 that is horizontally oriented is fixed to the upper end of the suspension frame 30, and a suspension hook of a suspension device such as an overhead crane can be hooked on the hook pin 34.

  A suspension limit switch 35 and a push limit switch 36 are attached in the slide frame 20. The suspension limit switch 35 is configured such that when the suspension frame 30 is lifted by a crane and the slide pin 33 moves to the upper end of the elongated hole 32, the slide pin 33 comes into contact therewith and is operated. .

  When the closing limit switches 6 and 6, the push limit switch 36 and the suspension limit switch 35 are all in the operating state, in this example, they are in the ON state, that is, the holding arms 2 and 2 are moved in the holding direction side. The closing limit switches 6 and 6 are operated, and the holding pad 5 and 5 which will be described later is supported by the pressing pad 14 at the lower end of the pushing support shaft 12 in a state where the outer surface of the lower half side of the coil is supported. The push limit switch 36 is operated by applying force, and the suspension limit switch 35 is operated by the suspension frame 30 being lifted by the crane and moving to the uppermost side with respect to the slide frame 20. When it becomes, all of the holding type coil lifter A becomes the electric cylinder 4, 4, 13 locked state, and the holding of the coil B State is controlled so as not to be released.

In this locked state, when the held coil is placed on the predetermined table C, the suspension frame 30 moves downward with respect to the slide frame 20, and the suspension limit switch 35 is turned OFF. It is sometimes released, so that the holding arms 2 and 2 can be opened and the push-down shaft 12 can be raised.

  Next, the holding operation of the holding type coil lifter A and the releasing operation after moving the coil will be described with reference to FIGS.

  As shown in FIG. 4A, the suspension frame 30 is lifted by a crane, and is moved above the slit coil B on the table C and stopped in a state where the holding arms 2 and 2 are opened.

In the figure, an explanatory diagram (hereinafter referred to as “left shoulder explanatory diagram”) shown on the left shoulder portion is a relative positional relationship between the slide frame 20 and the suspension frame 30 and the slide pin 33 in the elongated hole 32. Indicates the position (the same applies hereinafter).

  At this time, as shown in the left shoulder portion of the slide frame 20 and the suspension frame 30, the slide pin 33 comes into contact with the upper end of the elongated hole 32, and the total weight of the holding type coil lifter A is equal to the suspension frame 30. It is in a state supported by.

  Next, as shown in FIG. 4 (b), the entire holding coil lifter A is lowered by operating the crane, and the pressing pad 14 is brought into contact with the top surface of the slit coil B. At this time, as shown in the left shoulder explanatory view of the same figure, the slide pin 33 is in contact with the upper end of the elongated hole 32.

  Next, when the hook is lowered from the state of FIG. 4B by crane operation as shown in FIG. 4C, the holding device main body frame 1 has the pressing pad 14 in contact with the upper surface of the slit coil B. Accordingly, only the suspension frame 30 is lowered in a state where the lowering operation is stopped. This descent operation is continued for about half the length of the aforementioned long hole 32 and stopped. As a result, the slide pin 33 is moved to the center height position of the elongated hole 32 as shown in the left shoulder explanatory view in FIG.

  The relative position of the push-down pad 14 with respect to the holding arms 2 and 2 at this time is such that when the closing operation of the holding arms 2 and 2 described later is completed, the tip does not contact the floor surface C and the slit coil B, so The push-down pad 14 is moved and placed in advance at a position where the height is inserted below the outer surface of the half side.

  Note that the relative positions of the holding arms 2 and 2 with respect to the pressing pad 14 at this time differ depending on the diameter of the slit coil B to be held, and the stop at the appropriate relative position for each coil is determined by the operator. However, it is possible to use an automatic control mechanism in which a coil diameter is input in advance and the electric cylinder 4 is set to automatically stop at a predetermined relative position.

  In this way, by bringing the push-down pad 14 into contact with the top surface of the slit coil B and further lowering the hook of the crane, the suspension frame 30 is lowered by being guided by the slide frame 20 and is held by the crane. The suspension support force of the frame 1 is released. For this reason, the weight excluding the suspension frame 30 portion of the holding type coil lifter A is supported on the upper surface of the slit coil B via the pressing pad 14.

  Next, as shown in FIG. 5D, the holding arms 2 and 2 are moved in the closing direction. This operation is automatically performed by pressing a close button of a coil lifter remote control machine (not shown), and the electric cylinders 4 and 4 are operated and immediately before the tips of the holding arms 2 and 2 come into contact with the table C. It is automatically stopped by closing the limit switch 6 at the position. At this time, the holding pads 5, 5 at the tip portions of the holding arms 2, 2 are inserted upwardly below the lower half without contacting the slit coil B.

  In the state where the tips of both holding arms 2 and 2 are inserted under the slit coil B as described above, the electric cylinder 13 is operated to the extension side as shown in FIG. 5E to push the push-down shaft 12 downward. By this operation, the holding machine body frame 1 is pushed up against the slit coil B by reaction force, and the holding pads 5 and 5 at the tips of the holding arms 2 and 2 come into contact with the outer surface of the lower half side of the slit coil B. The holding body frame 1 is prevented from rising together with the holding arms 2 and 2.

  When the electric cylinder 13 is further operated to the extension side from this state, the cushion spring 25 shown in FIG. 2 is compressed, the support shaft 21 moves up in the trunnion 22, and the limit plate 26 at the upper end pushes the limit switch 36. Make it work. By operating the push limit switch 36, the electric cylinder 13 is stopped, and the push-down operation of the push-down pad 14 is stopped.

  When the electric cylinder 13 is stopped in this manner, the slit coil B is placed on the holding pads 5 and 5 and is pressed by the depressing force of the cushion spring 25 by the pressing pad 14. .

  Next, by lifting the suspension frame 30 with a crane, first, only the suspension frame 30 is lifted, and as shown in the left shoulder explanatory view in FIG. Is moved, the suspension limit switch 35 is operated, and all the limit switches 6, 6, 35, 36 described above are operated (ON state), and each part of the holding type coil lifter A itself is operated. The operation is locked. Furthermore, by lifting the suspension frame 30 with a crane, the entire holding coil lifter A rises with the slit coil B held at three points.

  The holding type coil lifter A holding the slit coil B is moved onto the pedestal C at a desired position by operating the crane, and the slit coil B is placed on the pedestal C by hanging the crane as shown in FIG. 6B. Put on.

Next, as shown in FIG. 6C, after the slit coil B is placed on the mounting table C, the descent operation by the crane is further continued. As shown in the left shoulder explanatory view of FIG. When the intermediate height position of 32 is reached, the crane lifting operation is stopped. As a result, the suspension limit switch 35 returns to the original state (OFF), and the holding arms 2 and 2 can be opened and the push-down shaft 12 can be lifted, that is, the electric cylinders 4 and 4 and 13 can be operated. It becomes a state.

  From this stop state, the electric cylinder 13 is operated in a contracting direction. By this operation, as shown in FIG. 7 (d), the holding arms 2 and 2 are lowered together with the holding machine body frame 1, and the holding pads 5 and 5 are separated from the outer surface of the lower half side of the slit coil B. At this time, the lower surface of the slit coil B is supported by the table C, and is held downward by the weight of the holding coil lifter A excluding the weight of the suspension frame 30 via the pressing pad 14 on the top surface.

  From this state, as shown in FIG. 7E, the electric cylinders 4 and 4 are operated to open the holding arms 2 and 2. As a result, the slit coil B is held down by the weight of the holding coil lifter A excluding the weight of the suspension frame 30 via the push-down pad 14, and the tips of the holding arms 2 and 2 are seen from below the slit coil B. Move to an off position.

  In this state, the lifting frame 30 is lifted by the crane, and the slit coil B is lifted and lowered.

A Holding coil lifter B Slit coil C Coil mount D Floor F Battery 1 Holding machine body frame 2 Holding arm 3 Support shaft 4 Electric cylinder 5 Holding pad 6 Close limit switch 10 Pushing mechanism 11 Guide cylinder 12 Pushing shaft 13 Electric Cylinder 14 push-down pad 20 slide frame 21 support shaft 22 trunnion 23 universal joint 24 universal joint 25 cushion spring 26 limit plate 27 nut 30 suspension frame 31 slide plate 32 oblong hole 33 slide pin 35 suspension limit switch 36 push limit switch

Claims (3)

A holding machine body frame that is supported by a lifting means such as a crane and is moved up and down, a pair of holding arms that are supported from the frame in a hanging direction, and face each other and rotate in an opening and closing direction;
A pair of telescopic actuators that are interposed between the back center height part of each holding arm and the holding machine body frame, and are opened and closed in a holding direction and an opening direction in which the tips of the holding arms approach each other. When,
A push-down shaft that goes in and out of the holding machine body frame downward, and a push-down pad at the lower end of the push-down shaft ,
Insert the tips of the holding arms under the outer surface of the lower half of the coil, push the push-down shaft downward with the push-down pad in contact with the top surface of the coil, and hold it with the reaction force against the coil By raising the machine body frame, the tips of the holding arms are brought into contact with the outer surface of the lower half of the coil so that the outer surfaces of the lower half of the coil are supported by the tips of the holding arms, and the coil is supported by the push-down pad. The coil is held in a state where the top surface is pressed in the push-down direction, and the coil is moved while being supported by the both holding arms and the push-down pad by lifting the holding machine body frame by the hanging means. faced type coil lifter made Te.   A slide frame is fixed upward on the holding machine body frame, a suspension frame is fitted to the slide frame so as to be relatively movable up and down by a predetermined length, and the suspension frame is attached by a suspension means such as a crane. The holding-type coil lifter according to claim 1, wherein the lifting and lowering operation is performed. A holding machine main body frame supported by lifting means such as a crane and moved up and down, and a pair of holding arms supported from the frame in a hanging direction and facing each other and rotating in an opening and closing direction;
The holding machine body frame is provided with a push-down shaft that is moved downward by an actuator,
A pressing pad is attached to the lower end of the pressing shaft,
Insert the tips of the holding arms under the outer surface of the lower half of the coil, push the push-down shaft downward with the push-down pad in contact with the top surface of the coil, and hold it with the reaction force against the coil By raising the machine body frame, the tips of both holding arms are brought into contact with the outer surface of the lower half of the coil so as to hold the coil,
Using a holding type coil lifter, in which a sliding frame is fixed upward on the holding machine body frame, and a suspension frame is fitted to the sliding frame so as to be relatively movable up and down by a predetermined length,
The suspension frame is supported by a suspension means and the entire holding-type coil lifter is lifted,
After the holding arm is opened and lowered with respect to the coil, the pressing pad is brought into contact with the top surface of the coil to support the load of the holding-type coil lifter on the coil, and further, a predetermined length. By lowering the suspension frame, the sliding frame is moved downward relative to the slide frame,
Next, the holding arm is moved in the closing direction, and both ends thereof are inserted under the outer surface of the lower half side of the coil, and then the push-down shaft is moved downward to apply a reaction force to the coil top surface by the push-down pad. By taking and raising the holding machine body frame, the tips of the holding arms are brought into contact with the outer surface of the lower half side of the coil,
Thereafter, the holding type coil lifter holding method for lifting the holding type coil lifter holding the coil by lifting the hanging frame by the hanging means.

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