Tool and auxiliary device for moving roll-shaped object

Abstract

To provide a tool for moving a roll-shaped object allowing for relieving labor of an operator in moving a roll-shaped object having a through-hole upright in position to a required position on a to-be-loaded surface.SOLUTION: A tool for moving a roll-shaped object 1, to be used in moving a roll-shaped object 3 rested upright in position and having centrally a through-hole 2 by being inserted in the through-hole 2, comprises a base unit 10 that has a lower end to abut against a to-be-loaded surface F, a chuck 6 that is disposed on a center axis L in a manner positioned in line with the base unit 10 and oppositely to the to-be-loaded surface F with respect to the base unit 10 and allowed to firmly hold the roll-shaped object 3 by engaging with an inner peripheral surface of the through-hole 2, a jack unit 7 that is capable of changing a gap between the base unit 10 and the chuck 6, a for-chuck operating unit 8 for allowing the chuck 6 to make hold and release actions of the roll-shaped object 3, and a for-jack-unit operating unit 9 for allowing the jack unit 7 to make nearing and leaving actions of the base unit 10 and the chuck 6.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a roll-like object moving device that is inserted into a through hole in the center when moving a roll-like object in an upright position, and a roll-like object moving assistance device consisting of this roll-like object moving device and a slider board. [Background technology]

[0002] A roll-shaped object having a through hole in the center is formed by winding a strip-shaped sheet such as a plastic film or paper around a hollow core such as a paper tube or a plastic tube. The roll-shaped object is formed in a cylindrical shape, and the hollow part of the core becomes the through hole. In a production factory or processing factory for roll-shaped objects, the roll-shaped object is transported from a processing machine such as a slitter rewinder to a temporary storage location or a shipping location. Some of these roll-shaped objects are heavy, such as 200 kilograms. When transporting such roll-shaped objects in a production factory or processing factory, in order to transport the roll-shaped object relatively stably and efficiently, a plurality of roll-shaped objects are often placed in an upright position on a single pallet and transported together with the pallet. In addition, a large number of roll-shaped objects may be placed in an upright position on a floor or the like for temporary storage. When the roll-shaped object is placed on the pallet in an upright position, the central axis and the through hole of the roll-shaped object face in the vertical direction, and one end surface of the roll-shaped object contacts the upper surface of the pallet, i.e., the placement surface that supports the transported object from below.

[0003] Conventionally, when a roll-shaped object having a through hole in the center is moved in an upright position, a jig for lifting a roll-shaped object, such as that described in Patent Document 1, is used. This jig for lifting a roll-shaped object includes a chuck that can hold the roll-shaped object by engaging a claw member with the inner peripheral surface of the through hole, and an operating shaft that can operate the chuck so that the chuck holds and releases the roll-shaped object. In this jig for lifting, the operating shaft and the chuck are connected to each other, and a hook is provided on the upper end of the operating shaft. To transport a roll-shaped object using the jig for lifting, the holding part of the jig for lifting is inserted into the through hole of the roll-shaped object from the upper end side and the operating shaft is operated to grip the roll-shaped object from the inside with the chuck. After that, for example, a hoist's hoist wire is hung on the hook at the upper end of the operating shaft and wound up, thereby lifting the roll-shaped object together with the jig for lifting. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2002-046976 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, although the conventional lifting tool described above can firmly hold the upper end of the through hole of a roll-like object, it does not have the function of raising and lowering the roll-like object or moving it laterally by itself. Therefore, in order to move a roll-like object to a desired location using this lifting tool, a transport machine such as a hoist, crane truck, or forklift that has the function of raising and lowering the transported object and the function of moving it laterally is required.

[0006] Even if such a conveying machine is used, the range of lateral transport by the conveying machine may not reach the target position of the roll-like object to be transported depending on the arrangement of the roll-like object in the storage area, the arrangement of the pallet, the size of the pallet, etc. In such a case, it is necessary to unload the roll-like object to a place as close to the target position as possible within the range of transport by the conveying machine, and then move the roll-like object to the target position by the labor of the worker. In order for the worker to move the roll-like object to the target position, the worker must place his / her hands on the roll-like object placed in an upright position on the upper surface of a floor, pallet, etc., and push or pull the roll-like object in a lateral direction, or, as when moving a drum, slightly tilt the roll-like object and apply a rotational force to the slightly tilted roll-like object to move it along the upper surface of the floor, pallet, etc. This work of moving the roll-like object is heavy work for the worker, and is dangerous when the weight of the roll-like object is large.

[0007] The present invention has been made in consideration of the above-mentioned problems of the conventional art, and an object of the present invention is to provide a roll-like object moving device that can reduce the labor of an operator when moving a roll-like object having a through hole in an upright position to a required position on a placement surface.

[0008] Another object of the present invention is to provide a roll-like object movement assistance device that can smoothly move a roll-like object even when the surface on which the object is placed has many small gaps and holes, such as a wooden pallet or a plastic pallet, or is prone to denting when a local load is applied.

[0009] According to a first aspect of the present invention, there is provided a roll-like object moving device which is placed in an upright position on a mounting surface and has a through hole in the center, and which is used by inserting the through hole into the through hole when moving the roll-like object, and which can be configured to include a root portion which abuts the mounting surface, a chuck which is arranged on the opposite side of the mounting surface across the root portion so as to be aligned with the root portion on the central axis of the roll-like object moving device which faces the longitudinal direction of the through hole when in use, and which can engage with the inner surface of the through hole to firmly hold the roll-like object, a jack portion which can change the distance between the root portion and the chuck, a chuck operating portion which causes the chuck to hold and release the roll-like object, and a jack portion operating portion which causes the jack portion to move closer to and away from the root portion and the chuck.

[0010] With the above-mentioned configuration, the roll-like object moving device is inserted into the through hole of the roll-like object placed on the placement surface in an upright position until the base part abuts against the placement surface, and the chuck is engaged with the inner peripheral surface of the through hole to firmly hold the roll-like object from the inside, and then the jack part is operated to protrude the base part from the through hole, so that the roll-like object can be lifted up from the placement surface with the base part abutting against the placement surface, and in this state, a known conveying means having a small thickness, such as a slider board, is inserted between the lower surface of the roll-like object and the placement surface, and then the roll-like object is lowered, so that the roll-like object can be transferred to the conveying means without being damaged. Therefore, by using this roll-like object moving device, the upright roll-like object having the through hole can be moved to a required position on the placement surface without using a large transport machine such as a hoist, a crane vehicle, or a forklift, and the labor of the worker when moving the roll-like object can be reduced.

[0011] According to the second aspect of the present invention, the chuck can be configured to have a claw member for engaging with the inner surface of the through hole, the claw member can be advanced and retreated in the radial direction of the through hole, and when the claw member is engaged with the inner surface of the through hole to hold a roll-like object, the load of the roll-like object acts in a direction that advances the claw member.

[0012] With this configuration, when the roll-like object is lifted from the placement surface, the load of the roll-like object acts in a direction that advances the claw members, so that the roll-like object can be securely held while being moved.

[0013] According to the third aspect of the present invention, the chuck comprises a cylindrical main body arranged on the central axis, a cam surface provided on the cylindrical main body, extending along the central axis and gradually inclining away from the central axis as it approaches the base portion, a claw member arranged on the cam surface for engaging with the inner surface of the through hole, and an actuator mounted on the cylindrical main body so as to be slidable in the direction of the central axis and holding the claw member movable forward and backward in the radial direction of the through hole, and the chuck operating unit can be configured to operate the actuator to cause the chuck to hold and release the roll-like object.

[0014] With the above-mentioned configuration, when the chuck grasps a roll-like object, the weight of the lifted roll-like object acts to cause the claw members to advance in the radial direction of the through hole through the cam surface, thereby securely holding the roll-like object as it moves.

[0015] According to the roll-like object moving device according to the fourth aspect of the present invention, the chuck operating portion can be configured to include a wire material connected to the actuating body or a rod capable of pushing and pulling the actuating body.

[0016] With the above-mentioned configuration, the roll-shaped object moving device can have a simple structure and can be made lighter.

[0017] According to the roll-like object moving device of the fifth aspect of the present invention, the jack portion comprises a female threaded hole formed in the cylindrical body of the chuck and a male threaded rod connected to the base portion and screwed into the female threaded hole, and the operating portion for the jack portion can be configured to include a rod member joined to the male threaded rod or a transmission rod consisting of an extension portion of the male threaded rod.

[0018] With this configuration, even if the roll-like object is heavy, the force that the worker applies to the jack operating part in order to lift it can be reduced.

[0019] According to the roll-like object moving device relating to the sixth aspect of the present invention, the base portion can be configured to include a rolling element that abuts against the mounting surface, and a rolling element holding portion that holds the rolling element so that it can roll.

[0020] According to the above-mentioned configuration, when a lateral moving force is applied to the roll-shaped object in a state where the roll-shaped object is lifted from the mounting surface, the rolling body rolls on the mounting surface, so that the lateral moving force required to move the roll-shaped object is sufficiently smaller than the lateral moving force required to resist the frictional force between the roll-shaped object and the mounting surface. And since the roll-shaped object moving device itself has a function of lifting the roll-shaped object, the roll-shaped object in an upright position can be moved to a required position on the mounting surface without the aid of a transporting machine having a function of lifting and lowering the transported object and a function of moving the transported object in a lateral direction, such as a crane or a forklift, as in the past. Therefore, according to the above-mentioned configuration, the labor of the worker when moving the upright roll-shaped object having a through hole in the center to a required position on the mounting surface relative to the roll-shaped object can be significantly reduced. Also, the roll-shaped object can be moved by simply lifting it slightly from the mounting surface, and the possibility of the roll-shaped object falling over during the movement is reduced, so that the worker can perform the moving work relatively safely.

[0021] The roll-like object moving device according to the seventh aspect of the present invention can further be configured to include a transmission part capable of transmitting a rotational driving force supplied from above the through hole to the rolling elements.

[0022] With the above-described configuration, when a rotational driving force is supplied to the transmission part, the rotational driving force is transmitted to the rolling body via the transmission part, so that the rolling body can be driven to rotate and the roll-shaped object can be easily moved.

[0023] According to the eighth aspect of the present invention, the roll-like object moving device can be configured so that the rolling element comprises a wheel, the rolling element holding part includes a holding arm that holds the axle of the wheel, and the transmission part includes a drive shaft that rotatably passes through the hollow parts of the transmission rod and the male threaded rod, and a gear transmission device that is provided along the holding arm between the rolling element and the end of the drive shaft on the rolling element side.

[0024] With the above-mentioned configuration, a compact roll-shaped object transferring device with a small outer diameter can be obtained.

[0025] According to the roll-like object moving device of the ninth aspect of the present invention, the base portion can be configured to include an axial body fixed to the male threaded rod, and a base body that is rotatably attached to the axial body about the central axis and abuts the placement surface.

[0026] With this configuration, even if the base portion is pressed against the surface to be placed under the heavy load of the roll-shaped material, the shaft body can rotate relative to the base body, so the rotation resistance of the male threaded rod does not increase. Therefore, the operating force applied to the jack operating part can be kept small.

[0027] A roll-like object moving assistance device according to a tenth aspect of the present invention can be configured to include a roll-like object moving device according to the first aspect of the present invention described above, and a pair of slider boards or a slider board having a notch for receiving a base portion of the roll-like object moving device, which is inserted between the roll-like object raised above the mounting surface by the roll-like object moving device and the mounting surface and laid on the mounting surface, for placing and sliding the roll-like object on top of the slider board.

[0028] With the above-mentioned configuration, the roll-like object slides and moves on the slider board laid on the mounting surface, so the load of the roll-like object acts on the mounting surface in a distributed manner via the slider board, and even if the mounting surface has many small holes or gaps or is easily deformed by localized loads, the roll-like object can be moved smoothly and stably. In addition, the slider board is relatively thin, light, and flexible, making it easy to handle. Therefore, the burden on the worker is small, and the amount of lifting and lowering of the roll-like object by the roll-like object moving device can be kept small. [Brief description of the drawings]

[0029] [Figure 1] 1 is a front view of a roll-shaped object moving device according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a side view of the roll-shaped object moving device shown in FIG. [Diagram 3] FIG. 2 is a perspective view showing an example of a roll-shaped object. [Figure 4] FIG. 3 is an enlarged cross-sectional view taken along the line AA in FIG. 2. [Diagram 5] 13 is a front view showing the roll-shaped object moving device with the claw members retracted. FIG. [Figure 6] 1 is a front view showing a state in which the roll-shaped object moving device is attached to a roll-shaped object. FIG. [Figure 7] FIG. 11 is a front view showing the roll-shaped object being lifted up. [Figure 8] FIG. 11 is a front view of a roll-shaped object moving device according to a second embodiment of the present invention. [Figure 9] FIG. 13 is an explanatory view of a modified embodiment of the chuck. [Figure 10] FIG. 13 is an explanatory view of another modified embodiment of the chuck. [Figure 11] FIG. 13 is an explanatory view of yet another modified embodiment of the chuck. [Figure 12] FIG. 11 is a front view of a roll-shaped object movement assistance device according to a third embodiment of the present invention. [Figure 13] 13 is a perspective view showing a state in which the roll-shaped object movement assisting device shown in FIG. 12 is in use. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0030] Hereinafter, the embodiments of the present invention will be described with reference to the drawings. However, the embodiments shown below are examples of a roll-shaped object moving device and a roll-shaped object moving assistance device for embodying the technical idea of ​​the present invention, and the present invention does not specify them as follows. In addition, this specification never specifies the members shown in the claims to the members of the embodiments. In particular, the dimensions, materials, shapes, and relative positions of the components described in the embodiments are not intended to limit the scope of the present invention to those, and are merely explanatory examples, unless otherwise specified. Note that the size and positional relationship of the members shown in each drawing may be exaggerated to clarify the explanation. Furthermore, in the following explanation, the same name and symbol indicate the same or similar members, and detailed explanation will be omitted as appropriate. Furthermore, each element constituting the present invention may be configured as a form in which multiple elements are composed of the same member and one member serves multiple elements, or conversely, the function of one member can be shared by multiple members. First embodiment

[0031] FIG. 1 is a front view of a roll-like object moving device according to a first embodiment of the present invention, and FIG. 2 is a side view of the same. The roll-like object moving device 1 is used by inserting it into the through hole 2 when moving a roll-like object 3 in an upright position having a through hole 2 in the center as shown in FIG. 3. This roll-like object moving device 1 includes a rolling object holding part 5 that holds the rolling object 4 so that it can roll toward a placement surface F, a chuck 6 that is arranged on the central axis L in line with the rolling object holding part 5 and on the opposite side of the placement surface F of the rolling object holding part 5 and can engage with the inner circumferential surface of the through hole 2 to firmly hold the roll-like object 3, a jack part 7 that can change the distance between the rolling object holding part 5 and the chuck 6, a chuck operation part 8 that causes the chuck 6 to perform a holding operation and a releasing operation of the roll-like object 3, and a jack operation part 9 that causes the jack part 7 to perform an approaching operation and a separating operation between the rolling object holding part 5 and the chuck 6. (Rolling element holding part)

[0032] The rolling element 4 and the rolling element holding part 5 constitute the base part 10 of the roll-like object moving device 1, and the rolling element 4 abuts against the placement surface F. The rolling element 4 is made of a wheel rotatably mounted on an axle 41, and the rolling element holding part 5 holds the axle 41 of the wheel with a holding arm 51. In this embodiment, when the jack part 7 is operated, the holding arm 51 and the axle 41 of the rolling element holding part 5 rotate about the central axis L together with the rolling element 4 placed on the placement surface F. In order to reduce the rotational resistance due to friction between the rolling element 4 and the placement surface F during the rotation, two rolling bearings are mounted on the axle 41, and the outer rings of the rolling bearings serve as the rolling element 4. (Chuck)

[0033] The chuck 6 and the jack portion 7 in Fig. 1 are shown in longitudinal section. Also, Fig. 4 shows enlarged cross sections of the chuck 6 and the jack portion 7. The chuck 6 is composed of a cylindrical main body 62 arranged on the central axis L, a cam surface 61 provided on the cylindrical main body 62, which extends along the central axis L and is inclined so as to gradually move away from the central axis L as it approaches the base portion 10, a claw member 63 arranged on the cam surface 61 for engaging with the inner peripheral surface of the through hole 2, and an operating body 64 slidably mounted on the cylindrical main body 62 along the central axis L and holding the claw member 63 so as to be movable forward and backward in the radial direction of the through hole 2.

[0034] In this embodiment, a groove 65 extending in the longitudinal direction is formed on the cylindrical outer peripheral surface of the cylindrical main body 62, and the bottom surface of this groove 65 serves as the cam surface 61. The actuator 64 is made of a tubular member and is attached to the outer peripheral surface of the cylindrical main body 62 so as to be slidable in the extension direction of the central axis L. An opening is formed in the actuator 64 at a position corresponding to the claw member 63, and the claw member 63 passes through this opening so as to be slidable in the radial direction of the through hole 2. Therefore, when the actuator 64 slides on the outer peripheral surface of the cylindrical main body 62 and moves in the direction of the central axis L, the claw member 63 also moves together with the actuator 64 in the extension direction of the cam surface 61. The claw member 63 gradually advances farther from the outer peripheral surface of the actuator 64 as the actuator 64 moves toward the base portion 10.

[0035] Furthermore, in order to enable the claw members 63 to press the inner circumferential surface of the through hole 2 without applying a moving force to the actuator 64 from outside the through hole 2 when the roll-like object moving device 1 is inserted into the through hole 2, the chuck 6 is provided with a biasing portion 66 that biases the actuator 64 in the direction in which the claw members 63 protrude. The biasing portion 66 applies a pressing force to the actuator 64 by a compression coil spring. Note that the biasing portion 66 is not necessary if the claw members 63 can reliably grip the roll-like object 3 by gravity acting on the actuator 64 and the claw members 63 before the jack portion 7 is operated. (Jack part)

[0036] The jack portion 7 comprises a female threaded hole 71 formed in the cylindrical body 62 of the chuck 6 and a male threaded rod 72 which is connected to the base 52 of the holding arm of the rolling element holding portion 5 and is screwed into the female threaded hole 71. (Jack operation unit)

[0037] The jack operating unit 9 is provided with a transmission rod 91 made of a rod member joined to the male threaded rod 72. The transmission rod 91 has a length such that the upper end of the transmission rod 91 protrudes from the upper end of the through hole 2 during use of the roll-like object moving device 1, and a hand-operated handle 92 is provided at the upper end of the transmission rod 91. The transmission rod 91 is made of a shaft body 91a to which the hand-operated handle 92 is fixed, and a hollow shaft body 91b. One end of the hollow shaft body 91b is fixed to the shaft body 91a, and the other end is fixed to the male threaded rod 72. A transmission rod receiving hole 67 having an inner diameter slightly larger than the outer diameter of the transmission rod 91 is provided above the female threaded hole 71 of the cylindrical main body 62 to rotatably receive the lower end of the transmission rod 91, and the transmission rod 91 is rotatable with respect to the cylindrical main body 62 of the chuck 6 and movable in the direction of the central axis L. (Chuck operation part)

[0038] The chuck operating unit 8 includes a wire member 81 connected to the operating body 64 to move the operating body 64 in the longitudinal direction of the cylindrical body 62 relative to the cylindrical body 62. In this embodiment, a wire rope is used as the wire member 81, but the wire member 81 may be any long, continuous material such as a rope, string, or metal wire made of metal, synthetic resin, or vegetable fiber, as long as it has the required tensile strength. Both ends of the wire member 81 are formed in a ring shape, and the both ends of the ring shape are penetrated by bolts 82 to be engaged with the operating body 64. The wire member 81 extends from the chuck 6 in the opposite direction to the rolling body 4, that is, upward in FIG. 1, and has a length that allows the top portion to be operated from above the through hole 2 during use of the roll-shaped object moving device 1. A hook 83 for hanging the wire member 81 is provided near the upper end of the transmission rod 91. The hook 83 is held rotatably relative to the transmission rod 91 and immovable in the longitudinal direction of the transmission rod 91. It should be noted that a rod capable of pushing and pulling the actuator 64 may be used instead of the wire member 81. When this rod is used, the actuator 64 can be pushed through the rod to advance the claw member 63, and the biasing portion 66 using the compression coil spring may be omitted. (Roll-shaped product)

[0039] 6, in this embodiment, the roll-like material 3 is formed by winding a strip-shaped sheet around a hollow core 31, and a disk 33 having a hole with an outer diameter substantially the same as the outer diameter of the winding roll 32 and an inner diameter substantially the same as the inner diameter of the core 31 is placed on the upper and lower end faces of the winding roll 32, and an annular flanged cap 34 with an outer diameter substantially the same as the through hole 2 is inserted to attach the disk 33 to the end face of the roll-like material 3, and in order to hold the disk 33 more securely, a fastening band 35 is passed through the through hole 2 and hung on the outer circumferential surface of the disk 33 and the winding roll 32 to fasten the disk 33. If there is no risk of damage to the winding roll 32 during movement, the disk 33, the flanged cap 34, and the fastening band 35 may not be used, and only the winding roll 32 may be moved as the roll-like material 3 by the roll-like material moving device 1. (How to use the roll-shaped object moving device)

[0040] Next, a method for moving the roll-like object 3 using the roll-like object moving device 1 configured as above will be described.

[0041] As shown in Figs. 1 and 2, when the roll-like object moving device 1 is not inserted into the through hole 2 of the roll-like object 3, the chuck 6 is in a state in which the claw member 63 is largely advanced. The rolling body 4 is usually in a retracted position with the rolling body holding part 5 and the chuck 6 approaching each other as shown in Fig. 1. This state is the initial state of the roll-like object moving device 1. If the rolling body 4 is not in the retracted position, the jack unit 7 is caused to move the rolling body holding part 5 and the chuck 6 closer to each other via the jack operation part 9, so that the rolling body 4 is placed in the retracted position as shown in Fig. 1. To do this, the actuator 64 or the claw member 63 is held with one hand, and the handwheel 92 of the jack operation part 9 is turned in the reverse direction with the other hand. Then, the male screw rod 72 of the jack unit 7 rotates in the reverse direction with respect to the female screw hole 71 together with the transmission rod 91, and the rolling body holding part 5 approaches the chuck 6.

[0042] To move the roll-like object 3 in an upright position using the roll-like object moving device 1, first, the claw members 63 are retracted as shown in FIG. 5 so that the roll-like object moving device 1 can be inserted into the through-hole 2 of the roll-like object 3. To do this, the chuck 6 is caused to perform the release operation of the roll-like object 3 via the chuck operating part 8, and the actuator 64 of the chuck 6 is lifted. To cause the chuck 6 to perform the release operation of the roll-like object 3 via the chuck operating part 8, the transmission rod 91 is held with one hand, the upper part of the wire material 81 is hooked with the other hand, and the wire material 81 is lifted against the biasing force of the biasing part (compression coil spring) 66.

[0043] Next, while maintaining the claw members 63 in a retracted state as shown in Fig. 5, the roll-like object moving device 1 is inserted into the through hole 2 of the roll-like object 3 placed on the placement surface F as shown in Fig. 6. Then, the central axis L of the roll-like object moving device 1 faces the longitudinal direction of the through hole 2. The insertion operation of the roll-like object moving device 1 into the through hole 2 is completed when the rolling elements 4 abut against the placement surface F. At this time, the chuck 6 is at a height close to the lower end of the roll-like object 3, and the cylindrical body 62 of the chuck 6 is held at a constant height by the rolling elements 4, the rolling element holding portion 5, and the male threaded rod 72.

[0044] Next, the claw members 63 are advanced as shown in FIG. 6 to engage with the inner peripheral surface of the through hole 2. To do so, the chuck 6 is caused to hold the rolled material 3 via the chuck operating unit 8. When the chuck 6 holds the rolled material 3, the claw members 63 advance in the radial direction of the through hole 2. In this embodiment, the actuator 64 is urged downward by the urging unit 66, so that the actuator 64 descends when the operator lowers his / her hand on the wire material 81 or releases his / her hand from the wire material 81. At this time, the cylindrical main body 62 is held at a constant height, so the actuator 64 moves downward relative to the cylindrical main body 62, and the claw members 63 move to the lower cam surface 61 and advance from the actuator 64.

[0045] 7, the roll-like object 3 is lifted from the placement surface F. To do so, the jack section 7 is caused to move the rolling element holding section 5 and the chuck 6 away from each other via the jack operating section 9, and the distance between the rolling element holding section 5 and the chuck 6 is increased, causing the rolling element 4 to advance downward from the through hole 2.

[0046] To cause the jack unit 7 to move the rolling element holding unit 5 and the chuck 6 apart, one hand is hung on the rolled object 3, and the other hand is used to rotate the handwheel 92 of the jack operating unit 9 in the normal direction. At this time, the claw member 63 is engaged with the inner peripheral surface of the through hole 2, so that the cylindrical body 62 is restrained by the rolled object 3 not to rotate. Therefore, the cylindrical body 62 does not rotate relative to the mounting surface F, and the transmission rod 91 rotates relative to the mounting surface F. Then, the male threaded rod 72 of the jack unit 7 rotates in the normal direction together with the transmission rod 91 relative to the female threaded hole 71, and the rolling element holding unit 5 moves away from the chuck 6. Then, the rolling element 4 protrudes downward from the lower end of the through hole 2, and the rolled object 3 rises up from the mounting surface F.

[0047] When the roll-like object 3 rises up from the placement surface F, the load of the roll-like object 3 acts in a direction that presses the claw members 63 down against the cylindrical main body 62, and the claw members 63 try to move downward relative to the cylindrical main body 62, that is, to a higher part of the cam surface 61. Therefore, when the roll-like object 3 rises up from the placement surface F, the claw members 63 try to advance further, so that the chuck 6 can hold the roll-like object 3 strongly.

[0048] Next, as shown in FIG. 7, the roll-like object 3 lifted from the placement surface F by the roll-like object moving device 1 is moved to a position directly above the placement surface F while maintaining its upright position. This moving operation is performed by the labor of the worker. Specifically, the worker places one hand on the transmission rod 91 or the upper part of the roll-like object 3, for example, and while holding the transmission rod 91 as vertically as possible, pushes the body part of the roll-like object 3 in the moving direction with the other hand to apply a moving force to the roll-like object 3. If the posture correction operation for maintaining the upright position of the roll-like object 3 during the movement is performed by placing the hand on the upper part of the roll-like object 3 or the like to raise the point of application of the posture correction force, the posture of the roll-like object 3 can be easily corrected with a relatively small posture correction force. In addition, since the chuck 6 holds the roll-like object 3 at a position close to the lower end, the roll-like object 3 can be reliably held even if the width of the roll-like object 3, i.e., the height of the upper end surface when in the upright position, changes in various ways.

[0049] During the movement of the roll-like material 3, the rolling elements 4 support the load due to gravity acting on the roll-like material 3 while moving while rolling on the support surface F, so that the movement resistance of the roll-like material 3 is significantly reduced compared to the conventional case in which the roll-like material 3 slides on the support surface F.

[0050] Next, the rolled object 3 that has been moved straight up to the target position is lowered onto the placement surface F. To do so, the chuck 6 is operated via the jack operation unit 9 to move the rolling element holding unit 5 and the chuck 6 closer together, and the rolling element 4 is placed in the retracted position. To move the jack unit 7 closer together, one hand is placed on the rolled object 3, and the handwheel 92 of the jack operation unit 9 is turned in the reverse direction with the other hand. This causes the male threaded rod 72 to rotate in the reverse direction relative to the female threaded hole 71, the gap between the rolling element holding unit 5 and the chuck 6 becomes smaller, and the rolling element 4 retracts into the through hole 2. As the rolling element 4 retracts, the rolled object 3 descends, and is finally placed on the placement surface F as shown in FIG. 6.

[0051] Next, the claw members 63 are retracted to release the rolled object 3 from the chuck 6. To do this, the chuck 6 is caused to perform a release operation for the rolled object 3 via the chuck operation part 8, and the claw members 63 are retracted from the inner peripheral surface of the through hole 2. To do this, the filament 81 of the chuck operation part 8 is manually pulled up. Then, the actuator 64 rises relative to the cylindrical main body 62, and the claw members 63 held by the actuator 64 move to the upper cam surface 61 as shown in FIG. 5 and retract in the radial direction of the through hole 2. At this time, since the rolled object 3 is supported by the placement surface F, no large load is applied to the claw members 63. Therefore, a relatively small force is required to pull up the filament 81.

[0052] Next, the roll-like object moving device 1 is pulled upward from the through-hole 2. This completes the operation of moving the roll-like object 3 using the roll-like object moving device 1. Second Embodiment

[0053] 8 is a front view of a roll-like object moving device according to a second embodiment of the present invention. The roll-like object moving device 1 differs from the first embodiment in that it includes a transmission part 11 capable of transmitting a rotational driving force supplied from above the through hole 2 to the rolling body 4.

[0054] The transmission unit 11 comprises a drive shaft 12 rotatably passing through the hollow portion of the male threaded rod 72, and a gear transmission 13 provided along the retaining arm 51 between the end of the drive shaft 12 on the rolling element 4 side and the rolling element 4. In this embodiment, the rolling element 4 is a wheel rotatably mounted on an axle 41, and the gear transmission 13 includes a first spur gear 13a fixed to the side of the rolling element 4, a second spur gear 13b meshing with the first spur gear 13a, a first bevel gear 13c rotating integrally with the second spur gear 13b, and a second bevel gear 13d fixed to the lower end of the drive shaft 12 meshing with the first spur gear 13a.

[0055] A hand crank 14 for supplying a rotational driving force to the drive shaft 12 is detachably provided on the upper end of the drive shaft 12. When the hand crank 14 is turned, the rotation is transmitted to the rolling body 4 via the drive shaft 12 and the gear transmission 13. When the roll-like object moving device 1 is in use, as shown in FIG. 7, when the roll-like object 3 is lifted from the placement surface F and the hand crank 14 is turned while maintaining the upright position of the roll-like object 3, the rolling body 4 rotates, and the roll-like object 3 moves in a direction along the placement surface F and in a direction perpendicular to the axle 41. Therefore, in a place where the roll-like object 3 cannot be directly pushed in the moving direction, the hand crank 14 can be rotated to move the roll-like object 3.

[0056] In this embodiment, the male threaded rod 72 of the jack part 7 is formed from a hollow shaft member having a length extending from the rolling element holding part 5 to the hand handle 92, and has an extension part 72a on the hand handle 92 side from the part forming the male thread that screws into the female threaded hole 71 of the cylindrical main body 62. The extension part 72a of the male threaded rod 72 is used as the transmission rod 91 of the jack operating part 9. (Changes in chuck)

[0057] 9 is an explanatory diagram of another embodiment of the chuck 6. This chuck 6 includes a cylindrical body 62 disposed on the central axis L, a claw member 63 having an engagement portion 63a that engages with the inner peripheral surface of the through hole 2, a pin 63b attached to the cylindrical body 62 for swingably holding the claw member 63, an actuator 64 slidably mounted on the cylindrical body 62 in the direction of the central axis L, and a motion conversion mechanism 68 for converting the sliding motion of the actuator 64 into swinging motion of the claw member 63. The pin 63b is disposed on the swing central axis of the claw member 63, which is parallel to an axis perpendicular to the central axis L, and holds the claw member 63 such that, when the claw member 63 engages with the inner peripheral surface of the through hole 2, the engagement portion 63a of the claw member 63 with the inner peripheral surface of the through hole 2 is located on the opposite side of the rolling body 4 across the pin 63b, and is located closer to the inner peripheral surface of the through hole 2 than the pin 63b. Therefore, when the claw members 63 are engaged with the inner circumferential surface of the through hole 2 to hold the rolled object 3, the load of the rolled object 3 acts to advance the claw members 63. The wire member 81 of the chuck operation unit 8 is connected to the actuator 64. The motion conversion mechanism 68 is composed of a rack 68a provided on the inner circumferential side of the actuator 64 and a pinion 68b fixed to the claw members 63 and meshing therewith. By operating the actuator 64 to slide upward by pulling up the wire member 81 of the chuck operation unit 8, the chuck 6 can release the rolled object 3, and when the wire member 81 is slackened, the actuator 64 can slide downward by the biasing force of the biasing unit 66, causing the chuck 6 to release the rolled object 3.

[0058] 10 is an explanatory diagram of another embodiment of the chuck 6. In this chuck 6, a four-joint link mechanism 69 is formed in which the lengths of the opposing links 69a of the claw member 63 and the cylindrical body 62 are equal, an actuator 64 is provided that is slidable in the direction of the central axis L concentrically with the transmission rod 91, and the actuator 64 and the four-joint link mechanism 69 are connected by a link 69b. The actuator 64 is reciprocated in the direction of the central axis L by the chuck operation unit 8, so that the claw member 63 advances and retreats. When the connecting portion 69c on the cylindrical body 62 side of the link 69a leading from the cylindrical body 64 to the claw member 63 is located higher than the connecting portion 69d on the claw member 63 side, the claw member 63 engages with the inner circumferential surface of the through hole 2. Therefore, when the claw member 63 is engaged with the inner circumferential surface of the through hole 2 to hold the roll-like object 3, the load of the roll-like object 3 acts to advance the claw member 63.

[0059] 11 is an explanatory diagram of yet another embodiment of the chuck 6. The roll-like object moving device 1 differs from the first and second embodiments in that the chuck 6 is composed of a cylindrical main body 62 arranged on the central axis L, the cylindrical main body 62 having a flange 62a at its lower end and a male screw 62b at its upper end, a rubber cylindrical engaging body 63c fitted to the outer circumferential surface of the cylindrical main body 62, and a cylindrical operating body 64 having a female screw hole 64a screwed into the male screw 62b at the upper end of the cylindrical main body 62, and the lower end surface of the cylindrical operating body 64 and the upper end surface of the flange 62a of the cylindrical main body 62 clamp the engaging body 63c, elastically deforming the engaging body 63c to expand the outer diameter of the trunk part of the engaging body 63c as shown by the two-dot chain line, thereby firmly holding the inner circumferential surface of the through hole 2 of the roll-like object 3. The chuck operation part 8, which causes the chuck 6 to hold the roll-like material 3 by expanding the outer diameter of the trunk part of the engagement body 63c, comprises an operation rod 84 which is an upward extension of the actuator 64, and a hand-operated handle 85 for rotating the operation rod 84, which is provided at the upper end of the operation rod 84. The operation rod 84 is a tubular rod, and a transmission rod 91 which is an extension of the male threaded rod 72 of the jack operation part 9 passes through its hollow part. When the hand-operated handle 85 of the chuck operation part 8 is rotated in the forward direction, the chuck 6 holds the roll-like material 3, and the actuator 64 approaches the flange part 62a, compressing the engagement body 63c. When the hand crank 85 is turned in the reverse direction, the chuck 6 releases the roll-like material 3, the actuator 64 moves away from the flange 62a, the engaging body 63c is released from compression, and the body portion of the engaging body 63c returns to its original outer diameter which is smaller than the inner diameter of the through hole 2. (Roll-shaped object movement assistance device)

[0060] A roll-like object moving tool according to a third embodiment of the present invention and an embodiment of a roll-like object moving assistance device according to the present invention will be described with reference to Figs.

[0061] In order to transport a plurality of roll-like objects 3 in an upright position, they are often placed on, for example, a wooden or plastic pallet P. The surface F of the wooden pallet P is composed of a plurality of deck boards arranged with a certain gap between them, while the surface F of the plastic pallet P is formed in a lattice shape, has many holes, and is easily dented by local load. When the roll-like object 3 placed in an upright position on the surface F having many gaps and holes or the surface F that is easily dented by local load is moved using the roll-like object moving device 1 of the first embodiment or the second embodiment having the rolling body 4 as shown in FIG. 1 or FIG. 8, the radius of the rolling body 4 is suppressed to be equal to or smaller than the radius of the through hole 2 of the roll-like object 3, so that the gaps, holes, and dents on the surface F hinder the rolling of the rolling body 4, and smooth movement of the roll-like object 3 cannot be expected. In addition, the load of the roll-like object 3 is concentrated on the rolling body 4, which may cause the surface F to be dented and damaged. Therefore, in order to enable smooth movement of the roll-like object 3 even on a supporting surface F which has many gaps and holes and is prone to dents, a roll-like object movement assistance device was obtained, which is composed of a roll-like object movement tool 1 shown in Figure 12 and a slider board SB.

[0062] In Figure 12, the roll-like object moving device 1 has a base portion 10 which comprises a shaft body 15 fixed to the male threaded rod 72 of the jack portion 7 and a base body 16 which is rotatably attached to the shaft body 15 about a central axis L and which abuts against the placement surface F, and which differs from the first and second embodiments in that it does not have the rolling body 4 and rolling body holding portion 5 shown in Figures 1 and 8.

[0063] The shaft body 15 is fixed to the lower end of the male threaded rod 72 and has a small diameter shaft portion 15a formed at its lower portion and a small diameter shaft portion 15b formed at its upper portion, and the base body 16 is formed in a disk shape and has a cylindrical fitting portion 16a formed on its upper surface and a small diameter shaft portion 16b formed on the upper surface of the fitting portion 16a. A thrust bearing 17 is attached between the shaft body 15 and the base body 16 by fitting a raceway to the small diameter shaft portion 15b formed at the upper portion and the small diameter shaft portion 16a formed on the upper surface, respectively. A cylindrical holding member 18 is rotatably fitted over each outer peripheral surface of the shaft body 15, the small diameter shaft portion 15b, and the raceway of the thrust bearing 17, and the fitting portion 16a is fitted and fixed to the lower end of the holding member 18, so that the base body 16 is held rotatably and non-detachably with respect to the shaft body 15.

[0064] This roll-like object moving device 1 also differs from the first embodiment in that it does not have a hook 83 as shown in Fig. 1, but a hook 83 may be provided as necessary. Also, instead of the chuck 6 and chuck operating part 8 shown in Fig. 12, the chuck 6 and chuck operating part 8 shown in Fig. 9, 10 or 11 may be used.

[0065] 12, the roll-like object movement assisting device comprises a roll-like object moving device 1 and a pair of slider boards SB. The pair of slider boards SB are used to slide the roll-like object 3 placed thereon, and are inserted between the roll-like object 3 raised above the placement surface F by the roll-like object moving device 1 and the placement surface F, and are used by being laid on the placement surface F.

[0066] The slider board SB is a plastic plate or sheet designed to allow an item placed on it to slide and be easily moved, and is a known commercially available product equivalent to the plastic slide plate described in JP 2007-145598 A, the plastic plate made of polyacetal or the like with multiple ribs arranged along the longitudinal direction of the plate surface described in JP 2016-088683 A, the slider board described in JP 2017-140168 A, the slide plate described in JP 2007-144114 A, etc., or one processed to the required dimensions.

[0067] Next, a method for moving the roll-like object 3 by using this roll-like object movement assistance device will be described.

[0068] First, the roll-like object moving device 1 is inserted into the through hole 2 of the roll-like object 3 until the base portion 10 abuts against the placement surface F, and the roll-like object 3 is held by the chuck 6, and then the roll-like object 3 is lifted up from the placement surface F by the jack portion 7 as shown in Fig. 12. Note that the handling of the roll-like object moving device 1 and the operation of the chuck operating portion 8 and the jack operating portion 9 up to this point are the same as in the first embodiment.

[0069] Next, a pair of slider boards SB are inserted between the lifted roll-like object 3 and the placement surface F, and laid on the placement surface F. At this time, the longitudinal direction of the slider boards SB is oriented in the moving direction of the roll-like object 3. The pair of slider boards SB are also positioned so as to avoid the base portion 10 of the roll-like object moving device 1.

[0070] Next, the jack operating unit 9 is operated to operate the jack unit 7 so that the base portion 10 retracts into the through hole 2, thereby lowering the roll-shaped material 3 and placing it on a pair of slider boards SB as shown in Figure 13.

[0071] Next, the chuck operating part 8 is operated to release the roll-like object 3 from the chuck 6, and then the roll-like object moving device 1 is lifted by hand to remove the roll-like object moving device 1 from the through hole 2 of the roll-like object 3.

[0072] Next, the roll-like object 3 is pushed to slide on the pair of slider boards SB to a required position.

[0073] According to the present invention, as necessary, balls can be used as the rolling elements 4 instead of wheels. Also, instead of rotating the transmission rod 91 (male threaded rod 72) shown in FIG. 8 with the hand crank 14, for example, a hexagonal hole can be provided at the upper end of the transmission rod 91, and the tip of a hexagonal wrench socket attached to a rechargeable electric drill can be inserted into the hexagonal hole at an appropriate time to start the electric drill, thereby supplying a rotational driving force from the electric drill to the transmission rod 91 to move the roll-like object 3. Also, in the roll-like object movement assist device, instead of the pair of slider boards SB, a slider board SB having a notch for receiving the base part 10 of the roll-like object moving device 1 when inserted between the floating roll-like object 3 and the placement surface F can be used, or a pair of rail-shaped slider boards SB overlapped with their conveying surfaces facing each other can be used. Also, if the slider board SB slides relative to the placement surface F when the roll-like object 3 slides, it can be attached to the placement surface F with, for example, double-sided tape. [Explanation of symbols]

[0074] 1...Roll-shaped object transport device 2...Through hole 3...Roll-shaped object; 31...Core; 32...Winding roll; 33...Disc; 34...Cap with flange; 35...Band for securing cargo 4... rolling element; 41... axle 5... rolling element holding portion; 51... holding arm; 52... base of holding arm 6...Chuck; 61...Cam surface; 62...Cylindrical body; 62a...Flange portion; 62b...Male thread portion; 63...Claw member; 63a...Engagement portion; 63b...Pin; 63c...Engagement body; 64...Actuator; 64a...Female thread hole; 65...Groove; 66...Pressing portion; 67...Transmission rod receiving hole; 68...Motion conversion mechanism; 68a...Rack; 68b...Pinion; 69...4-bar link mechanism; 69a...Link; 69b...Link; 69c...Connecting portion; 69d...Connecting portion 7...jack part; 71...female screw hole; 72...male screw rod; 72a...extension part of male screw rod 8...Chuck operating part; 81...Wire material; 82...Bolt; 83...Hook; 84...Operation rod; 85...Hand handle 9... Jack operating part; 91... Transmission rod; 91a... Shaft body; 91b... Hollow shaft body; 92... Hand handle 10...root part 11...Transmission section 12...Drive shaft 13... gear transmission; 13a... first spur gear; 13b... second spur gear; 13c... first bevel gear; 13d... second bevel gear 14...Hand crank 15...shaft body; 15a...small diameter shaft portion formed at the lower portion; 15b...small diameter shaft portion formed at the upper portion 16: base body; 16a: fitting portion; 16b: small diameter shaft portion formed on the upper surface 17...Thrust bearing 18...Retaining member F…Placement surface L…Center axis line P…Palette SB…Slider board

Claims

1. A roll-shaped object moving device that is used by inserting a through hole in a center of a roll-shaped object placed in an upright position on a placement surface and moving the roll-shaped object, the through hole comprising: A base portion that contacts the mounting surface; a chuck that can engage with an inner circumferential surface of the through hole to firmly hold the roll-like object, the chuck being arranged on the opposite side of the placement surface across the base portion so as to be aligned together with the base portion on a central axis of the roll-like object moving device that faces the longitudinal direction of the through hole during use; a jack portion capable of changing a distance between the base portion and the chuck; a chuck operating portion for causing the chuck to perform a holding operation and a releasing operation of the roll-shaped object; a jack section operation section for causing the jack section to perform an approaching operation and a separating operation between the base section and the chuck; A roll-shaped object moving device comprising:

2. The roll-shaped object moving device according to claim 1, The chuck is provided with a claw member for engaging with the inner surface of the through hole, the claw member can be advanced and retreated in the radial direction of the through hole, and when the claw member is engaged with the inner surface of the through hole to hold a roll-like object, the load of the roll-like object acts in the direction of advancing the claw member.

3. The roll-shaped object moving device according to claim 1, The chuck is A cylindrical main body disposed on the central axis; a cam surface provided on the cylindrical body, the cam surface extending along the central axis and gradually inclining away from the central axis as the cam surface approaches the base portion; a claw member disposed on the cam surface for engaging with an inner circumferential surface of the through hole; an actuator that is slidably mounted on the cylindrical main body in the central axis direction and that holds the claw member so as to be movable forward and backward in the radial direction of the through hole, The chuck operating portion operates the actuator to cause the chuck to hold and release the roll-like object.

4. The roll-shaped object moving device according to claim 3, The chuck operating portion comprises a wire material connected to the actuator or a rod capable of pushing and pulling the actuator.

5. The roll-shaped object moving device according to claim 3, The jack portion is a female screw hole formed in the cylindrical body of the chuck; a male threaded rod connected to the base portion and screwed into the female threaded hole; A roll-shaped object moving device, characterized in that the operating unit for the jack unit comprises a rod member joined to the male threaded rod or a transmission rod consisting of an extension of the male threaded rod.

6. The roll-shaped object moving device according to claim 1, The roll-shaped object moving device, characterized in that the base portion comprises a rolling element that abuts against the placement surface, and a rolling element holding portion that holds the rolling element so that it can roll.

7. The roll-shaped object moving device according to claim 6, A roll-like object moving device comprising: a transmission part capable of transmitting a rotational driving force supplied from above the through hole to the rolling element.

8. The roll-shaped object moving device according to claim 7, The rolling element is a wheel, The rolling element holder includes a holder arm for holding an axle of the wheel, The roll-shaped object moving device is characterized in that the transmission unit comprises a drive shaft that rotatably passes through the hollow portions of the transmission rod and the male threaded rod, and a gear transmission device that is provided along the retaining arm between the end of the drive shaft on the rolling element side and the rolling element.

9. The roll-shaped object moving device according to claim 5, The base portion of the roll-shaped object moving device is characterized in that it comprises an axial body fixed to the male threaded rod, and a base body that is rotatably attached to the axial body around the central axis and abuts the surface to be placed on.

10. The roll-shaped object moving device according to claim 1 ; A roll-like object moving assistance device comprising a pair of slider boards or a slider board having a notch for receiving the base portion of the roll-like object moving device, for placing and sliding the roll-like object on top, which is inserted between the roll-like object floated off the supporting surface by the roll-like object moving device and the supporting surface and laid on the supporting surface.

Images