JP3739666B2 - Equipment for moving heavy objects - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for moving a heavy object, which is used for movement between a mold conveying device and a mold mounting portion when exchanging molds such as a press machine.
[0002]
[Prior art]
As this type of conventional one, for example, there is one described in Japanese Utility Model Publication No. 3-21769. The schematic structure is provided so that the base end part of a conveyance rail is cantilever-supported so that it may extend on the upper surface of the bolster which carries in a metal mold | die, for example. The cantilevered support consists of a horizontal shaft provided horizontally at the base end of the transport rail and a semicircular recess provided on a mounting portion that supports the base end of the transport rail and detachably engaged with the horizontal shaft. And a rail-side contact surface provided below the horizontal axis and a bolster-side contact surface with respect to this contact surface. In this configuration, when the mold is placed on the transport rail, the outer peripheral surface of the horizontal axis and the semicircular recess are pressed against each other, and the contact surfaces on the rail side and the bolster side are also pressed against each other. It receives a large acting force according to the mold weight that fits.
[0003]
[Problems to be solved by the invention]
In the conventional transfer device as described above, the contact surface portions that are pressed against each other by the weight of the transported material acting on the transport rail are worn out to some extent, and the free end side of the transport rail is inclined downward. For example, in the conventional apparatus, when the wear of the engaging portion of the upper horizontal shaft and the recess progresses, the contact surface wears evenly in this portion. While maintaining contact, the center axis is slightly displaced from its original position. Even if the lower abutting surface is accurately adjusted to the initial surface contact state, the center axis of the upper horizontal axis is slightly displaced, resulting in a line contact or a single contact state, and uneven wear. Since the uneven wear due to the one-piece contact or the like proceeds faster than the wear of the surface in contact with the wide surface, a situation occurs in which the free end side of the transport rail is inclined downward in a short period of time. In general, it is very difficult to accurately adjust the contact surface to the surface contact state. Strictly speaking, the contact surface is often in a one-sided state, and uneven wear proceeds from the beginning. Is normal. Therefore, the inclination of the transport rail tends to occur early.
[0004]
When the conveyor rail is inclined downward, the normal conveyor rail is provided with a conveyor roller that protrudes from the upper surface, so that even if the inclination is small, it will move naturally due to its own weight, causing inconvenience in the work of moving the mold, etc. There is. Furthermore, since it is necessary to restore this inclination to a horizontal state, there is a problem that the horizontal adjustment must be performed frequently. Further, in order to achieve surface contact, it is necessary to correct the flatness. If the flatness is not good, the flat state is lost, and the horizontal state is impaired at an early stage.
It is an object of the present invention to prevent a downward inclination from being easily generated as a configuration in which a contact surface pressed by a load does not wear unevenly in a heavy article moving feeding device such as a cantilevered rail as described above. .
[0005]
[Means for Solving the Problems]
The means of the present invention is the apparatus for moving heavy objects, wherein the base end part of the carrier bar supporting the heavy object on the upper side is detachably attached to the attachment part in a cantilevered support state. A first pin that is perpendicular to the longitudinal direction of the carrier bar and that is horizontal and a second pin that is parallel to the first pin that is spaced below the first pin are rotatably supported, and the first pin is attached to the mounting portion. A first contact surface in the vertical direction that contacts from the front end side of the carrier bar, a support surface that contacts from the lower side, and a second contact surface in the vertical direction that contacts the second pin from the base end side of the carrier bar. the first pin and the second contact surface in contact with the second pin always plane surface abutting each by weight which acts on the carrier bar a notch planar provided on the peripheral surface in contact with the first abutment surface JP that has been configured to face contact as jostle with To (claim 1).
[0006]
When the carrier bar is attached to the attachment portion in a cantilevered state and a heavy object is placed on the carrier bar, the first pin is formed between the cut-out plane of the first pin and the first contact surface, and the cut-out plane of the second pin is 2 Even when the first pin and the second pin are slightly displaced around the axis, a large force according to the weight of the heavy load that presses against each other is applied between the two contact surfaces. When the force is applied, the first and second pins are rotated and automatically corrected so as to be in surface contact with the respective contact surfaces, and the large force is always supported in the surface contact state. Very little wear on the contact surface. Therefore, the carrier bar is less likely to be inclined due to wear of the contact portion supporting the carrier bar even after long-term use.
[0007]
In the above means, the carrier bar is provided with a plurality of conveying rollers in which a part of the peripheral surface protrudes from the upper surface when in use, and the base end of the roller is the first pin. It is good to have the structure supported so that it can rotate freely (Claim 2). The roller supported by the first pin can be provided at a position closest to the base end of the carrier bar. For example, when the die is moved to the upper surface of the bolster of the press machine, the roller is positioned close to the conveying roller or ball on the bolster side. The interval between the rollers can be reduced. In this way, the pitch at which the conveying rollers are provided can be reduced because the weight to be moved is always two when the bottom surface has a recess or the bottom surface has a small size in the longitudinal direction of the carrier bar. This is advantageous in that the roller can be in contact with the lower surface. That is, since a heavy object can be reliably supported by a roller, it is advantageous for smooth movement. As a result, the conventional problem that the distance to the nearest transport roller or transport ball on the side on which the carrier bar can be attached tends to be large is solved.
[0008]
In the above means, the second contact surface is formed in a protruding portion protruding toward the tip end side of the carrier bar, and the upper surface of the protruding portion has a concave shape and the carrier bar has the tip downward. It is preferable that the hook is formed to be engageable with the second pin in a substantially vertical state. The carrier bar can be supported in a suspended state by removing the carrier bar from the mounting portion and engaging the second pin with the hook. This hanging state is a folded state and does not interfere with other work when not in use.
[0009]
In the above means, a fulcrum surface provided at the base end of the carrier bar that becomes the center of rotation in contact with the upper end edge of the vertical surface to which the attachment portion is attached when lifting the distal end side of the carrier bar from the folded state. A small-diameter guided pin projecting from both ends of the second pin, and a guide portion provided in the mounting portion corresponding to both side positions of the hook and the second contact surface, and the guide portion The guide pin may be guided so that the second pin is detached from the hook and moves toward the second abutting surface as the carrier bar rotates about the fulcrum surface ( Claim 4).
[0010]
In this configuration, when changing from the folded state to the used state, if the leading end side of the carrier bar in the folded state is lifted, the carrier bar first rotates around the second pin supported by the hook, and then The fulcrum surface of the base end abuts on the upper edge of the vertical surface on which the mounting portion is attached, and the contacted position rotates as a fulcrum, so that the second pin is separated from the hook and guided. When the pin is guided by the guide portion and further lifted and pivoted until the carrier bar is substantially horizontal, the fulcrum surface is disengaged from the upper edge, and the notch plane of the second pin is thereby second. The base end portion is lowered so that the first pin is located at a position facing the contact surface and the first pin is located at a position facing the first contact surface. That is, the carrier bar is brought into use by lifting the tip end side of the carrier bar to make it substantially horizontal. Therefore, the operability is very good because it can be immediately used as necessary.
[0011]
In the above means, the attachment portion may be formed on a member attached to a vertical wall surface. Since the attachment part which can attach a carrier bar by attaching a member in a desired position is formed, it is easy to install the apparatus for moving a heavy article and to use it easily.
[0012]
In the above-mentioned means, the first pin and the second pin may be provided with an axial retaining means and a small amount of rotational displacement permissible means around the axis. ). Since the first and second pins prevent the first and second pins from coming out of the support holes supported by the carrier bar, it is possible to prevent the carrier bar from being attached to the attachment portion. When the second pin can rotate freely as much as possible, when it is mounted on the mounting portion in a use state, it is greatly displaced from the rotational position where it contacts the first and second contact surfaces. Although it may be difficult to install and troublesome work may occur, such a situation can be prevented with a configuration that only requires a small amount of rotational displacement. Accordingly, it is difficult for the operation to attach the carrier bar to the attachment portion to take time.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment of the present invention will be described with reference to FIGS. The heavy object moving device 1 includes a carrier bar 2 and a mounting portion 3. As shown in FIG. 1, the carrier bar 2 includes an arm-shaped main body 10 provided with a first pin 11, a second pin 12, a plurality of rollers 13 and 14, a stopper 15, and the like. 3 is formed in a block shape, and is provided with a first contact surface 16, a support surface 17, a second contact surface 18, a hook 19 and the like. In this embodiment, two sets of the same carrier bar 2 and mounting portion 3 are used, and the carrier bar 2 and 2 are arranged in parallel and used to support the article to be moved by both carrier bars 2 and 2. In the following description of the structure, one set will be described.
[0014]
As shown in FIGS. 1 (a), (b), (c) and FIGS. 3 (a), (b), the main body 10 of the carrier bar 2 includes two side plates 20, 20 having the same side surface shape. These are joined together by an appropriate number of rivets 21 at a predetermined interval to form an arm shape. As shown in the front view of FIG. 1B, the arm-shaped main body 10 has an upper edge 22 that is a straight line, the left end portion has a small vertical dimension, and the right base end portion has a large vertical dimension. The base end portion side is attached to the attachment portion 3 in a cantilever state. In the figure, reference numeral 23 denotes a hole punched for weight reduction.
[0015]
The first pins 11 provided on the main body 10 are provided with notched flat surfaces 24, that is, notches, at both ends of the short cylindrical body, as shown in FIG. It is provided to form a plane 24 parallel to the axis, and is supported horizontally and rotatably about the central axis so that the shaft hole is provided at the upper position of the base end of the main body 10 and both ends protrude. ing. As shown in FIG. 3, the first pin 11 is provided with small notches 25 at both ends on the opposite side of the notch plane 24, and the notch 25 rotates simultaneously with the retaining action. A member 26 that acts as a stopper is screwed to the carrier bar body 10. In the figure, 27 is a gap for allowing a small amount of rotation of the first pin 11.
[0016]
As shown in FIG. 1A, the second pin 12 is hatched for easy understanding, and a notch plane 28, that is, a notch is provided in the middle portion in the longitudinal direction of the short cylindrical body to be parallel to the axis. A flat hole 28 is formed, and a shaft hole is provided at a position slightly below the carrier bar tip side below the first pin 11 so that the shaft hole can be accommodated within the width of the main body 10 of the carrier bar 2. 1 pin 11 is supported so as to be rotatable around its own central axis.
[0017]
Further, the plurality of rollers 13 and 14 are for conveyance, and are rotatably supported by the main body 10 of the carrier bar 2 so that a part of the peripheral surface protrudes from the upper edge 22 of the main body 10. The protruding ends are in contact with the same plane. The roller 14 from the most proximal end of the plurality of rollers 13 and 14 is axially supported by the first pin 11 via a bearing. The other rollers 13 are rotatably supported on the carrier bar main body 10 via bearings at appropriate intervals, and a snap ring 29 is used to prevent the shaft from coming off.
[0018]
The stopper 15 regulates the movement of the heavy object so that the heavy object placed on the carrier bar does not come off the carrier bar 2 when the heavy object moves to the free end side. A downwardly inclined slope, the base end side is a vertical stopper surface, and a substantially triangular shape protrudes upward from the upper edge 22. The stopper 15 is rotatably supported by a shaft 30 on the lower side, has an arm portion 31, and presses a steel ball against a hole in the side plate with a spring (not shown) acting on the arm portion. The portion 31 is pressed against the pin 32 side, and the stopper 15 is held in the protruding state. The stopper 15 can be lowered to the position of the upper edge 22 when the inclined surface is pushed from the tip side. This is because the heavy object is supported by another support portion at the same height as the support by the carrier bar 2 and the carrier bar. When moving from the front end side, the stopper 15 is pushed by the heavy object and automatically descends to allow passage.
[0019]
1 (c) and FIG. 2 (b) is a concave shape in which the shape shown in the side view in FIG. 1 (c) and FIG. 2 (b) is continuous between the side walls 33 and 33 with the lower part 34, and the lower part 34 from the front side (carrier bar mounting side). It consists of a block-shaped main body 35 formed by cutting so that its thickness in the front-rear direction becomes thin, and a hook 19 attached to the front-facing surface of the cut-out portion. Rear facing first contact surfaces 16, 16 formed by cutting a predetermined dimension from the side (opposite the carrier bar mounting side), a second contact surface 18 formed by the front end surface of the hook 19, and a desired A rear surface 36 for attaching to the vertical wall surface of the, and an insertion hole for the attachment bolt 37. The first contact surface 16 corresponds to the first pin 11 and is a vertical surface in a state in which the mounting portion 3 is mounted on a predetermined vertical wall surface, and an upward horizontal surface following the lower end of the first contact surface 16. The horizontal plane is used as the support surface 17 of the first pin. The hook 19 is fixed to the main body 35 with a mounting screw 38, the second contact surface 18 is formed perpendicular to the front end, and the upper surface is formed in a recess 39 having a semicircular arc cross section corresponding to the second pin 12. The hook can support the intermediate portion of the two pins 12.
[0020]
The heavy goods moving device 1 configured as described above uses the carrier bar 2 in a use state with respect to the attachment portion 3 attached at a desired position, and stores it in a folded state when not in use. The installation and storage procedures will be described with reference to FIG. First, the operator lifts the carrier bar 2 and places both ends of the first pin 11 on the mounting portion 3 as shown in (a), and lifts the carrier bar 2 slightly forward (to the right in the figure). ) When pushed, as shown in (b), the first pin 11 and the base end portion of the carrier bar 2 begin to fall into the attachment portion 3, and are dropped as they are, and the support surface 17 supports both ends of the first pin. As a result, the notch planes 24 at both ends of the first pin 11 face the first abutment surface. Subsequently, when the force lifting the carrier bar 2 is gradually loosened and released, the notch plane 28 of the second pin 12 is released. It contacts the second contact surface 18 and enters the use state as shown in FIG.
[0021]
Further, when changing from the use state to the non-use state, the operator lifts the carrier bar 2 slightly, and the first pin 11 is positioned upward from the attachment portion 3 as shown in FIG. At that position, the front end side of the carrier bar 2 is slightly lowered as shown in (e), and the second pin 12 is positioned on the upper side of the hook 19 as shown in (f). When the weight of the portion is deposited and then the tip end side of the carrier bar is rotated downward, as shown in (g), the folded storage state is obtained.
[0022]
For example, as shown in FIG. 5, the heavy article moving apparatus 1 has a mounting part 3 attached to the edge of a bolster 41 of a press machine 40 by means of the mounting bolt 37 and the carrier bar 2 is used as required. The mold 42 is used for loading and unloading the mold 42 with respect to the upper surface of the bolster 41. The rollers 13 and 14 of the carrier bar can move the heavy metal mold 42 with a small force. When the die 42 is placed on the upper surface of the carrier bar 2 installed in use, the notch plane 24 of the first pin 11 and the first contact surface 16 of the mounting portion 3 are pressed against each other, and the second pin 12 The load is supported in a state where the notch plane 28 and the second contact surface 18 of the attachment portion 3 are pressed against each other. This is because the first and second pins 11 and 12 can rotate, so even if the first and second pins are not in contact with each other at the beginning, if the ends of the cutout planes 24 and 28 are pushed by the mating plane, they rotate and naturally face. It is because it rotates to the state which contacts. Therefore, it is always used in a surface contact state, uneven wear of the contact surface does not occur, and the carrier bar 2 is maintained in a predetermined horizontal cantilever support state over a long period of time. In addition, what is shown by 43 in Fig.5 (a) is a movement apparatus for positioning, carrying out, and carrying-in movement of a metal mold | die with the rotatable ball which is made into the state which protrudes by air pressure from the bolster 41 upper surface. 45 is a slide.
[0023]
In this heavy goods moving device 1, when the contact portion is worn out by long-term use and the horizontal state of the carrier bar is damaged, the hook 19 and the attachment portion forming the attachment surface are formed. 3 is adjusted horizontally by interposing a shim of an appropriate thickness between 44 (see FIGS. 2A and 2C). At this time, it is not necessary to adjust the flatness of the surface contact portion.
[0024]
A second embodiment of the present invention will be described with reference to FIGS. In this embodiment, the configuration for quickly installing the folded storage state to the use state in the first embodiment is applied. For this purpose, as shown in FIG. 6, a fulcrum surface 50 is provided at the base end portion of the carrier bar 2a, guided pins 51 are provided at both ends of the second pin 12, and a guide portion 52 is provided at the attachment portion 3a. . These will be described below, and the other parts are substantially the same as those of the first embodiment, and therefore, the equivalent parts are denoted by the same reference numerals and the description thereof is omitted.
[0025]
The fulcrum surface 50 is formed as an inclined surface inclined from the end surface 53 to the lower surface 54 at the base end of the carrier bar 2a in the use state, and the attachment portion 3a is attached when the front end side of the carrier bar 2a is lifted from the folded state. It contacts the upper edge 56 of the mounting surface 55 and becomes the center of rotation.
The guided pin 51 is formed by protruding pins having a smaller diameter than the second pin at both ends of the second pin 12.
The guide portion 52 is provided so as to protrude to the front side of the attachment portion 3 a corresponding to the both side positions of the hook 19 and the second contact surface 18. The illustrated guide part 52 is formed by punching a metal plate and bending it, and symmetrical parts on both sides are attached with bolts 57. The guide 52 guides the guided pin 51 according to the rotation of the carrier bar 2a about the fulcrum surface when the carrier bar 2a is lifted from the folded state, and the second pin 12 Has a vertical surface 58 and an inclined surface 59 so as to move slightly upward from the position supported by the hook 19 and move diagonally forward and upward, and a convex portion having a rounded shape is formed on the inclined surface 58. Then, the outer vertical surface 60 extending vertically downward and the flank surface 61 inclined downward to the second contact surface 18 are further ended. The slope 59, the outer vertical surface 60, and the middle of the flank 61 are guided when changing from the folded state to the used state, and are guided when the inclined surface 59 is folded.
[0026]
A process when the carrier bar 2a is operated from the folded state to the used state will be described with reference to FIGS. The state (a) is a folded state, and the carrier bar 2a is a state in which the second pin 12 is supported by the recess 39 of the hook 19 and hangs down. When the leading end side of the carrier bar 2a is lifted from this state, the fulcrum surface 50 comes into contact with the upper end edge 56 of the mounting surface 55 as shown in FIG. As shown in (c), the second pin 12 starts to move from the recess 39 of the hook 19 to the upper left of the recess diagonally to the upper left as shown in FIG. The guide pin 51 is guided to the slope 59 of the guide portion 52. When the leading end side of the carrier bar 2a is further lifted, the guided pin 51 is sequentially guided to the slope 59 following the vertical surface 58 of the guide portion 52 as shown in (d), (e), and (f). Then, the tip end side of the carrier bar 2a becomes higher than the base end side, and the fulcrum surface 50 is attached to the mounting surface 55 by the dead weight of the carrier bar 2a as shown in (h) and (i) when it climbs over the slope as shown in (g). When the sliding base end side is displaced downward along the upper end edge 56 of the first pin 11 and the notch planes 24 at both ends of the first pin 11 are brought into contact with the first contact surface, the base end portion is lowered as shown in (j), In the middle of the depression, the guided pin 51 is guided by the outer vertical surface 60 of the guide portion 52 and the flank 61 that follows the guide pin 52, and is disengaged from the flank 61 at the end of the depression. Notch of the second pin 12 on the contact surface 16 When the surface 28 is in a position facing the second contact surface 18 and the lifting force on the leading end side of the carrier bar 2a is released at this stage, the notch plane and the contact surface come into contact with each other so that the carrier bar 2a becomes (k) It becomes the use condition shown in. In other words, as an operation for setting the use state, the use state is obtained by lifting the tip end side of the folded carrier bar and making it substantially horizontal.
[0027]
A process when the carrier bar 2a is changed from the use state to the folded state will be described with reference to FIGS. (A) is the same use state as FIG.8 (k). After slightly lifting the tip of the carrier bar 2a from this state to the state (b), the whole is lifted directly above to bring the first pin 11 to a state (c) higher than the mounting portion 3a. The guide pin 51 is moved to the lower right and engaged so as to be placed on the inclined surface 59 of the guide portion 52, the most part of the weight of the carrier bar 2a is left in the state (d), and the tip side is slightly changed as it is. When it is lowered step by step (e), after passing through the state of (f), the second pin 12 is in the state of (g) in the recess 39 of the hook 19, and when the tip side is further lowered, the state of (h) After the state, the folded state shown in (i) is obtained. In other words, as a folding operation, the carrier bar 2a is once lifted, the guided pin 51 of the second pin 12 is engaged with the guide portion to support most of the weight, and then the tip end side is rotated downward. What is necessary is just to be a drooping state.
[0028]
As described above, by providing the fulcrum surface 50, the guided pin 51, and the guide portion 52, it can be put into a use state or a folded state by a simpler operation.
[0029]
【The invention's effect】
According to the first aspect of the present invention, the carrier bar is less likely to be inclined due to wear of the contact portion supporting the carrier bar even after long-term use.
According to the second aspect of the present invention, there is an effect that the conventional problem that the distance from the closest transport roller or the transport ball on the side on which the carrier bar is attached tends to be large can be solved.
The invention according to claim 3 has an effect of being able to be in a folded storage state that does not interfere with other work when not in use.
According to the fourth aspect of the present invention, there is an effect that it is easy to install and use the apparatus for moving heavy objects.
According to the fifth aspect of the present invention, the operation of attaching the carrier bar to the attachment portion is facilitated, and there is an effect that it is difficult to cause a troublesome operation for the operation to be used.
[Brief description of the drawings]
FIG. 1 shows a first embodiment of the present invention, where (a) is a plan view, (b) is a front view, and (c) is a left side view.
2A and 2B show a mounting portion of the embodiment, wherein FIG. 2A is a plan view, FIG. 2B is a left side view, and FIG. 2C is a cross-sectional view taken along line AA in FIG.
3A and 3B show a base end portion of the carrier bar of the embodiment, where FIG. 3A is a plan view and FIG. 3B is a front view.
FIGS. 4A to 4G are schematic front views showing an operation process in which the carrier bar according to the embodiment is attached to and removed from the attachment portion and put into a storage state. FIGS.
FIG. 5 shows an example in which the embodiment is applied to mold movement of a press machine, where (a) is a plan view, (b) is a left side view, and (c) is a front view.
6A and 6B show a second embodiment of the present invention, where FIG. 6A is a plan view, FIG. 6B is a front view, FIG. 6C is a left side view, and FIG. 6D is a front view of a carrier bar base end. .
7A and 7B are enlarged views of the mounting portion of the embodiment, where FIG. 7A is a plan view, FIG. 7B is a front view, and FIG. 7C is a left side view.
FIGS. 8A to 8K are schematic front views showing a process of changing the carrier bar of the embodiment from a folded state to a used state; FIGS.
9A to 9I are schematic front views showing a process of changing the carrier bar of the embodiment from the use state to the folded state.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Heavy goods movement apparatus 2 Carrier bar 3 Attachment part 10 Main body 11 1st pin 12 2nd pin 13 Roller 14 Roller 15 Stopper 16 1st contact surface 17 Support surface 18 2nd contact surface 19 Hook 20 Plate 21 Rivet 22 Upper edge 23 Hole 24 Notch plane 25 Notch portion 26 Member 27 Gap 28 Notch plane 29 Snap ring 30 Shaft 31 Arm portion 32 Pin 33 Side wall 34 Lower part 35 Main body 36 Rear face 37 Mounting bolt 38 Mounting screw 39 Recess 40 Press machine 41 Bolster 42 Die 43 Ball 44 50 Support point surface 51 Guided pin 52 Guide part 53 End surface 54 Lower surface 55 Mounting surface 56 Upper edge 57 Bolt 58 Vertical surface 59 Slope 60 Outer vertical surface 61 Flank

Claims (6)

In the apparatus for moving heavy objects, the base end of the carrier bar supporting the heavy object on the upper side is detachably attached to the attachment part in a cantilevered support state. A first pin that is horizontal at a right angle and a second pin that is parallel to the first pin that is separated downward from the first pin are rotatably supported, and the mounting portion is connected to the first pin from the front end side of the carrier bar. a support surface for abutting the first abutment surface and the lower abutting vertical, provided with the second contact surface from the carrier bar base end side of the abutting direction perpendicular to the second pin, said first abutment A notch plane is provided on the peripheral surface of the first pin that abuts the surface and the second pin that abuts the second abutment surface, and the abutment surfaces are always pressed against each other by the weight acting on the carrier bar. Heavy load transfer, characterized by contact configuration Apparatus for. The carrier bar according to claim 1 is configured to include a plurality of conveying rollers in which a part of the peripheral surface protrudes from the upper surface in a use state, and the one on the base end side of the roller is the first one. An apparatus for moving heavy objects, wherein the apparatus is rotatably supported by one pin. The heavy load moving device according to claim 1 or 2, wherein the second contact surface is formed in a protruding portion protruding toward a tip end side of the carrier bar, and An apparatus for moving a heavy object, wherein the upper surface is formed in a hook that can be engaged with the second pin in a substantially vertical folded state in which the carrier bar has a concave shape and the tip is downward. 4. The heavyweight moving device according to claim 3, wherein when lifting the tip end side of the carrier bar from the folded state, the carrier bar abuts on an upper end edge of a vertical surface to which the attachment portion is attached and becomes a rotation center. A fulcrum surface provided at the base end of the second pin, a small-diameter guided pin projecting from both ends of the second pin, and a guide portion provided at the attachment portion corresponding to both side positions of the hook and the second contact surface And the guide portion moves the guided pin away from the hook toward the second abutting surface side according to the rotation of the carrier bar about the fulcrum surface. An apparatus for moving heavy objects, characterized by being configured to guide. 5. The heavy article moving device according to claim 1, 2, 3, or 4, wherein the attachment portion is formed on a member attached to a vertical wall surface. Equipment. 6. The heavy article moving device according to claim 1, 2, 3, 4, or 5, wherein the first pin and the second pin are provided with axial retaining means. And an apparatus for moving heavy objects, characterized in that a small amount of rotational displacement allowing means around the axis is provided.

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