Raising / lowering device, moving system for moved body and crane installation method

Abstract

To provide a raising / lowering device that is able to increase the moving speed of a moved body, is able to simplify the configuration, and is easy to reduce the size and weight thereof.SOLUTION: A raising / lowering device 1 has a raising / lowering device body 5 comprising: a pair of guide rods 9 parallel to each other and extending long in a vertical direction; a lower joint portion 11 joining the pair of guide rods 9 at lower end parts of the pair of guide rods 9; and an upper joint portion 13 joining the pair of guide rods 9 at upper end parts of the pair of guide rods 9 and on which a heavy load lifting device 15 for lifting a heavy load by using a cable 19 is installed. The raising / lowering device also has a moving body 7 which is provided with a moved-body installation portion 23 for installing a moved body 21 thereon, is engaged with the pair of guide rods 9 so as to freely move in the vertical direction, and is installed with the cable extending downward from the heavy load lifting device 15 installed on the upper joint portion 13 of the raising / lowering device body 5.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a lifting device, a system for moving an object to be moved, and a method for installing a crane. [Background technology]

[0002] Conventionally, a jack that uses a screw or a hydraulic cylinder to raise and lower an object is known. Also, a crane lifting system that raises and lowers a crane along a permanent column to enable the construction and demolition of a building to be performed in a short period of time is known (see Patent Document 1).

[0003] The crane lifting system described in Patent Document 1 is configured to include a support column which is a permanent column, a crane installation floor which supports a crane, a reaction member installed on the upper part of the support column, and a lifting jack attached to the reaction member for lifting and lowering the crane installation floor. The reaction member is configured to include a pair of locking parts which lock onto the side surfaces of the support column, a connecting beam which is disposed across the support column and connects the pair of locking parts, and a beam moving jack which is attached to the locking part and moves the connecting beam horizontally. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2023-23264 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, with a conventional jack that uses a screw or a hydraulic cylinder to raise and lower an object, it is difficult to increase the moving speed of the object (moved body). Also, with the crane lifting system described in Patent Document 1, the system configuration is complicated, making it difficult to reduce the size and weight.

[0006] The present invention aims to provide a lifting device that can increase the movement speed of a moved object, has a simplified configuration, and is easy to reduce in size and weight, a moving system for a moved object that uses this lifting device, and a method for installing a crane. [Means for solving the problem]

[0007] A lifting device according to one aspect of the present invention is a lifting device comprising a lifting device main body comprising a pair of guide rods extending vertically in parallel with each other, a lower joint which joins the pair of guide rods at their lower ends, and an upper joint which joins the pair of guide rods at their upper ends and on which a heavy-duty lifting device for lifting a heavy duty object using rigging is installed; and a movable body which is provided with a moved body installation section on which a moved body is installed, engages with the pair of guide rods so as to be freely movable in the vertical direction, and on which rigging extending downward from the heavy-duty lifting device installed at the upper joint of the lifting device main body is installed.

[0008] In addition, in a lifting device according to this aspect of the present invention, a caster is provided on at least one of the lower joint of the lifting device main body and the lower end of the guide rod of the lifting device main body, and when the guide rod of the lifting device main body extends vertically on a floor surface or the ground surface, at least one of the lower joint of the lifting device main body and the lower end of the guide rod of the lifting device main body contacts the floor surface or the ground surface and the caster moves away from the floor surface or the ground surface, and when the guide rod of the lifting device main body extends at a predetermined angle relative to the vertical on the floor surface or the ground surface, the lower joint of the lifting device main body and the guide rod of the lifting device main body move away from the floor surface or the ground surface and the wheels of the casters engage with the floor surface or the ground surface forming a rolling pair.

[0009] A system for moving a moved object according to one aspect of the present invention includes a plurality of the lifting devices, and is configured such that a first portion of the moved object is installed on a first moved object installation section, which is a moved object installation section provided on the moving object of a first lifting device among the plurality of lifting devices, and a second portion of the moved object is installed on a second moved object installation section, which is a moved object installation section provided on the moving object of a second lifting device among the plurality of lifting devices.

[0010] In addition, in a movement system for a moved body relating to an aspect of the present invention, the moved body is a hoist support body that supports a hoist of a crane, and the hoist support body is configured to include a beam extending horizontally on which the hoist is installed, and a plurality of pillars extending vertically and supporting the beam, and each of the plurality of pillars is configured to be installed on each of the moving bodies of the plurality of lifting devices.

[0011] A crane installation method according to an aspect of the present invention is a method of installing the crane using a moving system for the moved body, in which each of the plurality of columns is configured by connecting a plurality of column structures in order in their longitudinal direction, the method including a column structure-beam installation step of installing a first group of column structures configured of a plurality of the column structures one by one at a predetermined position and installing the beam on which the hoist is installed on the arranged first group of column structures, and installing each of the movable bodies of the plurality of lifting devices on each of the column structures of the uncompleted hoist support body with the hoist installed, which is formed in the column structure-beam installation step. a pre-completed hoist support lifting step of lifting the uncompleted hoist support by synchronously raising each of the movable bodies of the plurality of lifting devices after installing the plurality of lifting devices in the lifting device installation step; and a column structure adding step of, after lifting the uncompleted hoist support in the pre-completed hoist support lifting step, inserting each of a second group of column structures composed of the plurality of column structures below each of the first group of column structures and adding each of the second group of column structures below each of the first group of column structures.

[0012] In addition, in a moving system for a moved body relating to an aspect of the present invention, the moved body is a stage on which an object is placed, and the stage is configured to include a top plate portion and a plurality of pillars extending in the vertical direction and supporting the top plate portion, and each of the plurality of pillars is configured to be installed on each of the moving bodies of the plurality of lifting devices.

[0013] Furthermore, a method for installing a crane according to an aspect of the present invention is a method for installing a stage using the moving system for the moved object, wherein each of the plurality of columns is configured by connecting a plurality of column components in order in their longitudinal direction, and the method includes a column component / top plate section installation step of arranging a first group of column components configured of a plurality of the column components one by one at a predetermined position and installing the top plate section on the arranged first group of column components; and installing each of the moving bodies of the plurality of lifting devices on each of the column components of the uncompleted stage formed in the column component / top plate section installation step. a pre-completion stage lifting step of lifting the uncompleted stage by synchronously raising each of the movable bodies of the plurality of lifting devices after installing the plurality of lifting devices in the lifting device installation step, and a column structure adding step of, after lifting the uncompleted stage in the pre-completion stage lifting step, inserting each of a second group of column structures composed of the plurality of column structures below each of the first group of column structures and adding each of the second group of column structures below each of the first group of column structures.

[0014] A lifting device according to one aspect of the present invention is configured with a guide portion extending long in the vertical direction, and has a lifting device main body having a heavy object lifting device installation section at its upper end on which a heavy object lifting device that lifts heavy objects using rigging is installed, and a moved object installation section on which a moved object is installed, which engages with the guide portion of the lifting device main body so as to be freely movable in the vertical direction, and a moving object on which rigging extending downward from the heavy object lifting device installed in the heavy object lifting device installation section is installed. Effect of the Invention

[0015] According to the present invention, it is possible to increase the moving speed of the object to be moved, and also to simplify the configuration, thereby making it easy to reduce the size and weight. [Brief description of the drawings]

[0016] [Figure 1] 1 is a plan view of a system for moving a moved object according to an embodiment of the present invention; [Diagram 2] 2 is a front view of the system for moving a moved object according to the embodiment of the present invention, taken along the line II in FIG. 1. [Diagram 3] 1 is a diagram showing a system for moving a moved object and a method for installing a crane according to an embodiment of the present invention; [Figure 4] 4A and 4B are views showing a lifting device according to an embodiment of the present invention, in which FIG. 4B is a view seen from an arrow IVB in FIG. 4A, and FIG. 4C is a view seen from an arrow IVC in FIG. [Diagram 5] 5A is an enlarged view of the VA portion in FIG. 4, and FIG. 5B is a view taken along the line VB in FIG. [Figure 6] 5A is an enlarged view of the VIA portion in FIG. 4, and FIG. 5B is a view showing a state in which the lifting device is tilted from the state shown in FIG. [Figure 7] 6A is an enlarged view of the portion VIIA in FIG. 4, and FIG. 6B is a view seen from the arrow VIIB in FIG. [Figure 8] 5A is an enlarged view of part VIIIA in FIG. 4, and FIG. 5B is a view taken along the line VIIIB--VIIIB in FIG. [Figure 9] 1A and 1B are diagrams showing a moved body (column structure) of a moving system for a moved body according to an embodiment of the present invention, in which (b) is a view taken along the arrow IXB in (a), (c) is a view taken along the arrow IXC in (a), (d) is a diagram showing the IXD-IXD cross section in (b), and (e) is a diagram showing the IXE-IXE cross section in (b). [Figure 10] 1 is a diagram illustrating a support form of a column of a movement system for a moved object according to an embodiment of the present invention. [Figure 11] FIG. 2 is a diagram showing the installation of a moving system for a moved object and a stage according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] 1 to 3, a lifting device (jack lifter) 1 according to an embodiment of the present invention is used, for example, for installing a crane 3, and is configured with a lifting device main body 5 and a moving body (lifting member) 7. The lifting device 1 is designed to be used on an object such as a floor surface 27 or a ground surface 87 (see FIG. 11).

[0018] For ease of explanation, one predetermined horizontal direction (vertical direction) is defined as the X direction, another predetermined horizontal direction (horizontal direction) perpendicular to the X direction is defined as the Y direction, and the up-down direction (height direction) perpendicular to the X and Y directions is defined as the Z direction.

[0019] As shown in Fig. 4 etc., the lifting device main body 5 is configured to include a pair of guide rods 9, a lower joint 11, and an upper joint 13. The guide rod 9 is formed, for example, from a steel material into a rectangular tubular shape (configured from a steel square pipe). The pair of guide rods 9 are slightly spaced apart from each other in the Y direction, are parallel to each other and extend long in the vertical direction (Z direction).

[0020] The lower joint 11 and the upper joint 13 are made of, for example, aluminum or an aluminum alloy. The lower joint 11 is provided integrally with the pair of guide rods 9 at the lower ends of the pair of guide rods 9, and joins the pair of guide rods 9. The upper joint 13 is provided integrally with the pair of guide rods 9 at the upper ends of the pair of guide rods 9, and joins the pair of guide rods 9. In addition, a heavy load lifting device (heavy load lifting / suspending device; for example, a chain block) 15 for hoisting or lowering a heavy load is installed on the upper joint 13.

[0021] To explain further, the housing 17 of the chain block 15 is attached to the upper joint 13 at a middle portion between the pair of guide rods 9 of the upper joint 13. By attaching the housing 17 of the chain block 15 to the upper joint 13, the chain (rigging) 19 for lifting and suspending a heavy load and the hand chain 22 for operation hang down from the housing 17 of the chain block 15. The chain (rigging) 19 for lifting and suspending a heavy load and the hand chain 22 hang down between the pair of guide rods 9.

[0022] The movable body 7 is provided with a movable body installation section (lifted material installation section) 23 on which a movable body (lifted material) 21 is installed. The movable body 7 is engaged with a pair of guide rods 9 so as to be movable in the vertical direction. A rigging 19 (for example, the lower end of the rigging 19) extending downward from a chain block 15 installed on an upper joint 13 of the lifting device main body 5 is joined to the movable body 7 and installed thereon.

[0023] The movable body 7 is lifted up or suspended by rigging 19 extending downward from the housing 17 of the chain block 15 installed at the upper joint 13. By changing the extension length of the rigging 19 extending downward from the housing 17 of the chain block 15 installed at the upper joint 13, the movable body 7 moves up and down while engaging with the pair of guide rods 9. That is, when the extension length of the rigging 19 becomes shorter, the movable body 7 moves upward, and when the extension length of the rigging 19 becomes longer, the movable body 7 moves downward.

[0024] When the moved body 21 is placed on the moved body installation section 23 of the moving body 7, the moving body 7 and the moved body 21 are joined together and integrated, so that the moved body 21 also moves in the Z direction together with the moving body 7.

[0025] The lifting device 1 is elongated in the vertical direction so that it can fit into a narrow space, and its external dimensions are small in the vertical direction (X direction) and horizontal direction (Y direction) and large in the height direction (Z direction). For example, the external dimension value of the lifting device 1 in the Y direction is larger than the external dimension value of the lifting device 1 in the X direction. In this case, the external dimension value of the lifting device 1 in the Z direction / the external dimension value of the lifting device 1 in the Y direction is about 5 to 15 times. The range of 5 to 15 times may be 5 to 10 times, 5 to 8 times, or 6 to 7 times.

[0026] Moreover, the external dimension values ​​of the lifting device 1 in the X and Y directions are approximately the same as those of the pillar 39 (pillar constituent body 69) in the X and Y directions. For example, the external dimension values ​​of the lifting device 1 in the X and Y directions are slightly larger than those of the pillar 39 (pillar constituent body 69) in the X and Y directions. Note that the external dimension values ​​of the lifting device 1 in the X and Y directions may be equal to those of the pillar 39 (pillar constituent body 69) in the X and Y directions. Furthermore, the external dimension values ​​of the lifting device 1 in the X and Y directions may be smaller than those of the pillar 39 (pillar constituent body 69) in the X and Y directions.

[0027] 5 and other drawings, the lifting device 1 is provided with casters 25. The casters 25 are provided on at least one of the lower joint 11 of the lifting device main body 5 and the lower end of the guide rod 9 of the lifting device main body 5.

[0028] The state in which the guide rod 9 of the lifting device main body 5 extends vertically (Z direction) on a horizontally deployed, planar floor surface 27 is referred to as the lifting device standing state. In the lifting device standing state, at least one of the lower joint 11 of the lifting device main body 5 and the lower end of the guide rod 9 of the lifting device main body 5 is in contact with the floor surface 27. The casters 25 are also separated from the floor surface 27 (see FIG. 6(a)).

[0029] The state in which the guide rod 9 of the lifting device body 5 extends at a predetermined angle with respect to the vertical direction on the floor surface 27 is referred to as the inclined state of the lifting device. In the inclined state of the lifting device, the lower joint 11 of the lifting device body 5 and the guide rod 9 of the lifting device body 5 are separated from the floor surface 27, and the wheels 29 of the casters 25 are configured to engage with the floor surface 27 in a rolling pair (see FIG. 6(b)).

[0030] In other words, when the lifting device 1 is in an inclined state, only the wheels 29 of the casters 25 are in contact with the floor surface 27, and the lifting device 1 can be moved on the floor surface 27 with a small force by rolling the wheels 29.

[0031] Next, a moving system 31 for a moved object using the lifting device 1 will be described. The moving system 31 for a moved object includes a plurality of lifting devices 1, as shown in Fig. 1 and Fig. 2. A first portion 21A of a moved object 21 is installed on a first moved object installation portion 23A, which is a moved object installation portion 23 provided on a moving object 7 of a first lifting device 1A of the plurality of lifting devices 1. A second portion 21B of a moved object 21 (a second portion distant from the first portion 21A) is installed on a second moved object installation portion 23B, which is a moved object installation portion 23 provided on a moving object 7 of a second lifting device 1B of the plurality of lifting devices 1.

[0032] When the movable body 7 of the lifting device 1 is installed on the object to be moved 21 and viewed from above, the center of gravity of the object to be moved 21 is located between the first portion 21A and the second portion 21B. When the movable bodies 7 of the two lifting devices 1 are installed on each of them to move the object to be moved 21, the movable body 7 of the first lifting device 1A and the movable body 7 of the second lifting device 1B move substantially in synchronization with each other (at substantially the same height position).

[0033] When three lifting devices are provided, a third lifting device 1C is added to the embodiment using the above-mentioned two lifting devices 1A and 1B. A third portion 21C of the moved object 21 is installed on a third moved object installation portion 23C, which is a moved object installation portion 23 provided on the moving object 7 of the third lifting device 1C. The third portion 21C is separated from the first portion 21A and the second portion 21B.

[0034] In a plan view, the center of gravity of the object to be moved 21 is located inside a triangle whose corners are the first portion 21A, the second portion 21B, and the third portion 21C. When the object to be moved 21 is moved by being installed on each of the moving bodies 7 of the three lifting devices 1, the moving body 7 of the first lifting device 1A, the moving body 7 of the second lifting device 1B, and the moving body 7 of the third lifting device 1C move approximately in synchronization with each other.

[0035] When four lifting devices 1 are provided, a fourth lifting device 1D is added to the embodiment in which the above-mentioned three lifting devices 1 are used. Figs. 1 to 3 show the case in which four lifting devices 1 are provided. A fourth portion 21D of the moved object 21 is set on a fourth moved object installation portion 23D, which is a moved object installation portion 23 provided on the moving object 7 of the fourth lifting device 1D. The fourth portion 21D is separated from the first portion 21A, the second portion 21B, and the third portion 21C.

[0036] 1, in plan view, the center of gravity of the object to be moved 21 is located inside a rectangle having the first portion 21A, the second portion 21B, the third portion 21C, and the fourth portion 21D as corners. When the object to be moved 21 is moved by being installed on each of the moving bodies 7 of the four lifting devices 1, the four moving bodies 7 from the moving body 7 of the first lifting device 1A to the moving body 7 of the fourth lifting device 1D move in almost synchronization with each other. The same can be considered when five or more lifting devices 1 are provided.

[0037] 1 to 3, the object to be moved 21 is a hoist support body (hoisting device support body) 35 that supports a hoist (hoisting device) 33 of a crane 3. The hoist support body 35 is configured to include a beam 37 that extends horizontally and on which the hoist 33 is installed, and a plurality of pillars 39 that extend vertically below the beam 37 and support the beam 37. Each of the plurality of pillars 39 (39A, 39B, 39C, 39D) is configured to be installed on each of the movable bodies 7 of the plurality of lifting devices 1 (1A, 1B, 1C, 1D).

[0038] The moving system 31 for the moved object will now be described in more detail.

[0039] First, the lifting device 1 will be described. The lower joint 11 is configured with two flat plate-like portions 41 and 43, and is "L" shaped when viewed in the Y direction, as shown in Fig. 4(b) and Fig. 6. The lower joint 11 extends in the Y direction from an end of one guide rod 9A of the pair of guide rods 9 to an end of the other guide rod 9B of the pair of guide rods 9. The end of the guide rod 9A is the end opposite to the guide rod 9B, and the end of the guide rod 9B is the end opposite to the guide rod 9A. The lower joint 11 is joined to the pair of guide rods 9 using fasteners such as bolts and nuts (not shown).

[0040] The flat portion 41 contacts the side surfaces of the pair of guide rods 9 with its thickness direction aligned in the X direction, and the flat portion 43 contacts the lower ends of the pair of guide rods 9 with its thickness direction aligned in the Z direction. When viewed in the Z direction, the pair of guide rods 9 are located inside the lower joint portion 11, as shown in Figures 4(c) and 5(b).

[0041] As shown in Figures 4, 5, etc., one lifting device 1 is provided with two casters 25. The casters 25 are attached to the lower end of the guide rod 9 via caster supports 45. Two caster supports 45 are provided, with the first caster support 45 and the first caster 25 being provided on the guide rod 9A, and the second caster support 45 and the second caster 25 being provided on the guide rod 9B.

[0042] When viewed in the Y direction, as shown in Fig. 6(a), the caster support 45 is formed in a trapezoid shape with one corner being a right angle. As a result, a slope 47 inclined with respect to the Z direction is formed in the caster support 45. A wheel support 49 that supports the wheel 29 of the caster 25 is integrally provided on this slope 47. The caster 25 and the caster support 45 are located on the opposite side to the flat plate-like portion 41 of the lower joint 11 in the X direction.

[0043] As shown in FIG. 7 and other drawings, the movable body 7 is formed in a generally rectangular parallelepiped shape. The movable body 7 is provided with a pair of through holes 51. The through holes 51 are formed in a rectangular prism shape and pass through the movable body 7 in the Z direction. The pair of through holes 51 are spaced apart from each other in the Y direction. A pair of guide rods 9 (9A, 9B) pass through each of the pair of through holes 51. A gap 53 that is shaped like a square (rectangular ring) when viewed in the Z direction is formed between the movable body 7 and the guide rod 9 that passes through the through holes 51.

[0044] Further, the movable body 7 is provided with a plurality of notches 55. In the embodiment shown in FIG. 7, eight notches 55 are provided. Two cam followers 57 are provided at one notch 55. The two cam followers 57 are arranged in the notch 55. In the embodiment shown in FIG. 7, sixteen cam followers 57 are provided. An outer ring 59 of the cam follower 57 is engaged with the guide rod 9 to form a rolling pair. This allows the movable body 7 to move only in the Z direction relative to the guide rod 9 without any rattle.

[0045] One end face 61 of the movable body 7 in the X direction (the end face on the flat portion 41 side of the lower joint 11; the end face opposite the caster 25) serves as the movable body installation portion 23. Although not shown, the end face 61 shown in Fig. 7 is provided with a female screw or the like for fixing the movable body 21. Furthermore, the end face 61 protrudes in the X direction beyond the flat portion 41 of the lower joint 11 (is farther away from the guide rod 9).

[0046] The lower end of the rigging 19 of the chain block 15 is joined to the upper end surface 63 of the movable body 7. The portion of the upper end surface 63 of the movable body 7 to which the lower end of the rigging 19 of the chain block 15 is joined is located at the center of the movable body 7 in the X direction, and is also located at the center of the movable body 7 in the Y direction.

[0047] Like the lower joint 11, the upper joint 13 is also configured to include two flat plate-like portions 65, 67, and is "L" shaped when viewed in the Y direction, as shown in Fig. 8(b). Like the lower joint 11, the upper joint 13 also extends in the Y direction from an end of one guide rod 9A of the pair of guide rods 9 to an end of the other guide rod 9B of the pair of guide rods 9. The upper joint 13 is also joined to the pair of guide rods 9 using fasteners such as bolts and nuts (not shown).

[0048] The flat portion 65 contacts the side surfaces of the pair of guide rods 9 with its thickness direction aligned in the X direction, and the flat portion 67 contacts the upper ends of the pair of guide rods 9 with its thickness direction aligned in the Z direction. When viewed in the Z direction, the pair of guide rods 9 are located inside the upper joint 13. The chain block 15 (housing 17) is suspended from the flat portion 67 of the upper joint 13 at the center of the flat portion 67.

[0049] As shown in Figs. 1 to 3, the crane 3 is configured to include a hoist 33 and a hoist support 35. A weight load (not shown) is suspended by the hoist 33. The suspended weight load is designed to be easily moved, for example, in the X direction.

[0050] The hoist support 35 is made of, for example, a steel material, and includes a beam 37 and a pillar 39. For example, three beams 37 are provided, and for example, four pillars 39 are provided.

[0051] The four pillars 39 (39A, 39B, 39C, 39D) stand upright from the floor surface 27, spaced apart in the X and Y directions and with their longitudinal directions aligned in the Z direction. When viewed from above, as shown in FIG. 1, the four pillars 39 (39A, 39B, 39C, 39D) are located at the four corners of a rectangle.

[0052] The beams 37 are, for example, H-shaped steel or I-shaped steel, and three beams are provided. The first beam 37A extends long in the Y direction and is installed integrally with columns 39A and 39C located on one side in the X direction and separated from each other in the Y direction. One end of the first beam 37A in the longitudinal direction is installed at the upper end of column 39A, and the other end of the first beam 37A in the longitudinal direction is installed at the upper end of column 39C.

[0053] The second beam 37B extends long in the Y direction and is integrally installed on pillars 39B, 39D located on the other side in the X direction and separated from each other in the Y direction. One end in the longitudinal direction of the second beam 37B is installed at the upper end of the pillar 39B, and the other end in the longitudinal direction of the second beam 37B is installed at the upper end of the pillar 39D.

[0054] The third beam 37C extends long in the X direction and is disposed above the first beam 37A and the second beam 37B. One end of the third beam 37C in the longitudinal direction is joined to the first beam 37A at the longitudinal center of the first beam 37A. The other end of the third beam 37C in the longitudinal direction is joined to the second beam 37B at the longitudinal center of the second beam 37B.

[0055] A hoist 33 is suspended from the third beam 37C, and this suspended hoist 33 is movable in the X direction relative to the third beam 37C.

[0056] Each of the plurality of columns 39 is configured by connecting a plurality of column constituent bodies 69 in sequence in the longitudinal direction.

[0057] 9, the pillar constructing body 69 is configured to include four rectangular, thin, flat side plate portions 71, one rectangular, thin, flat bottom plate portion 73, one rectangular, thin, flat top plate portion 75, and one rectangular, thin, flat reinforcing plate portion 77. The outer shape of the pillar constructing body 69 is a quadrangular pillar shape.

[0058] A plurality of through holes 79 formed in a small diameter circle are provided in the side plate portion 71, the bottom plate portion 73, and the upper plate portion 75. The through holes 79 penetrate the side plate portion 71, the bottom plate portion 73, and the upper plate portion 75 in the thickness direction thereof. The through holes 79 are provided, for example, to join the column constituent bodies 69 together, and a bolt passes through the through holes 79.

[0059] The side plate portion 71 is provided with a large rectangular through hole 81 for reducing the mass of the side plate portion 71 and for allowing a hand or a tool for turning a nut to be placed inside. The through hole 81 penetrates the side plate portion 71 in the thickness direction. The bottom plate portion 73, the upper plate portion 75, and the reinforcing plate portion 77 are provided with a circular through hole 83 for reducing the mass of the bottom plate portion 73, the upper plate portion 75, and the reinforcing plate portion 77.

[0060] The column constructing body 69 is formed by joining, for example, by welding, a side plate portion 71, a bottom plate portion 73, an upper plate portion 75, and a reinforcing plate portion 77. When two column constructing bodies 69 are joined in this longitudinal direction, the bottom plate portion 73 of the second column constructing body 69 is in contact with the upper plate portion 75 of the first column constructing body 69.

[0061] Next, a method for installing (assembling) the crane 3 using the moving system 31 for the object to be moved will be described. The method for installing the crane 3 includes a procedure for installing the column structure and beam, a procedure for installing the lifting device, a procedure for lifting the hoist support body before completion, and a procedure for adding the column structure.

[0062] In the column structure / beam installation procedure, a first group of column structures 69A consisting of a plurality of column structures 69 are arranged one by one at a predetermined position on the floor surface 27, which is a horizontal plane (see Figs. 1 and 2). A beam 37 on which a hoist 33 is installed is installed on the first group of column structures 69A thus arranged.

[0063] In the column structure / beam installation procedure, the beam 37 is installed on the first group of column structures 69A using fasteners such as bolts, nuts, and other connecting members (not shown). The work in this column structure / beam installation procedure is performed with the soles of the shoes worn by the worker in contact with the floor surface 27, or with the worker standing on a step stool with a height of about 50 cm at most, and holding tools such as commercially available spanners and wrenches in his / her hands. In other words, the work height in the column structure / beam installation procedure is, for example, about 2 m at most.

[0064] In the lifting device installation procedure, each of the movable bodies 7 of the multiple lifting devices 1 is installed on each of the column structures 69A of the pre-completed hoist support body (pre-completed crane) with the hoist installed, which was formed in the column structure / beam installation procedure (see Figures 1 and 2).

[0065] The weight of the uncompleted hoist support body (uncompleted crane) is such that it would not be easy to lift even if multiple workers tried to do so with their bare hands, each holding one of the first group of column structures 69A.

[0066] Before and immediately after the lifting device installation procedure is performed, the movable body 7 of the lifting device 1 is located at the lowest position within this movement range. Also, immediately after the lifting device installation procedure is performed, a portion near the lower end of the first group of column constituents 69A is installed on the moved body installation portion 23 of the movable body 7 of the lifting device 1 using, for example, a bolt not shown (see Figs. 1 and 2).

[0067] In the procedure for lifting the unfinished hoist support, after the installation of the multiple lifting devices 1 in the procedure for installing the lifting devices, each of the movable bodies 7 of the multiple lifting devices 1 is raised in synchronization (raised so that the heights from the floor surface 27 are almost equal to each other). This lifts the unfinished hoist support (see FIG. 3). The working height at this time is also about 2 m at maximum.

[0068] After the hoist support lifting procedure has been performed, the height dimension between the floor surface 27 and the underside of the first group of column structures 69A is slightly larger than the length dimension (height dimension) of the column structures 69.

[0069] In the column construct addition procedure, after lifting the uncompleted hoist support in the hoist support lifting procedure, each of the second group of column constructs 69B consisting of multiple column constructs 69 is inserted below each of the first group of column constructs 69A (see FIG. 3). That is, each of the second group of column constructs 69B is arranged in the space between each of the first group of column constructs 69A and the floor surface 27 so that the longitudinal direction of each of the second group of column constructs 69B is in the Z direction and it is located directly below each of the first group of column constructs 69A. Then, each of the second group of column constructs 69B is added below each of the first group of column constructs 69A. The working height at this time is also about 2m at maximum.

[0070] In the column constructing addition process, the column constructs 69B of the second group are added to the lower sides of the column constructs 69A of the first group, so that the lower ends of the column constructs 69A of the first group and the upper ends of the column constructs 69B of the second group are joined to each other. Also, the column constructs 69A of the first group and the column constructs 69B of the second group are joined to each other by fasteners such as bolts.

[0071] The mass of one pillar structure 69 is, for example, 10 kg or less, so that an adult can easily lift and move it by himself. If the height dimension of the pillar 39 is to be increased further, the pillar structure 69 can be added in the same manner.

[0072] 10, the pillar 39 may be supported by a jack 85 using a screw. This allows the height dimension of the pillar 39 to be adjusted while continuously changing. Furthermore, by using the jack 85, even if the floor surface 27 is slightly irregular, the rattling of the hoist support 35 installed on the floor surface 27 can be eliminated.

[0073] The lifting device 1 comprises a lifting device main body 5 and a moving body 7. The lifting device main body 5 comprises a pair of guide rods 9 that extend vertically, a lower joint 11, and an upper joint 13 on which a chain block 15 is installed. The moving body 7 is engaged with the pair of guide rods 9 so as to be movable vertically, and moves while being suspended by rigging 19 extending from the chain block 15 installed at the upper joint 13. The moving body 7 is provided with a moved body installation section 23.

[0074] This allows the moving body 7 to be moved at a faster speed and with a longer stroke than a jack that uses a screw or hydraulic cylinder to raise and lower an object. Furthermore, the lifting device 1 mainly comprises only the guide rod 9, the lower joint 11, the upper joint 13, and the moving body 7. This simplifies the configuration of the lifting device 1, making it easy to reduce the size and weight of the lifting device 1.

[0075] Moreover, the external dimensions of the lifting device 1 are small in the vertical direction (X direction) and horizontal direction (Y direction) and large in the height direction (Z direction). This increases the degree of freedom in handling the lifting device 1 and allows the lifting device 1 to be used to assemble the crane 3 even in a small space. For example, if the lifting device 1 can be inserted between stacked luggage where the floor surface 27 is exposed, the crane 3 can be assembled.

[0076] In addition, in the lifting device 1, with the guide rod 9 extending vertically on the floor surface 27, the lower joint 11 of the lifting device main body 5 is in contact with the floor surface 27. In addition, in the lifting device 1, with the guide rod 9 extending on the floor surface 27 at a predetermined angle with respect to the vertical direction, the wheels 29 of the casters 25 are engaged with the floor surface 27 in a rolling pair.

[0077] This makes it easier for the lifting device 1 to move on the floor surface 27, and allows the lifting device 1 to transition from a moving state to a used state with a simple operation. Conversely, the lifting device 1 can transition from a used state to a moving state with a simple operation.

[0078] The system 31 for moving an object to be moved is configured to include a plurality of lifting devices 1. In the system 31 for moving an object to be moved, a first portion 21A of the object to be moved 21 is installed on a first object to be moved installation section 23A of a first lifting device 1A. Also, a second portion 21B of the object to be moved 21 is installed on a second object to be moved installation section 23B of a second lifting device 1B.

[0079] As a result, if the moving bodies 7 of each lifting device 1 are moved in synchronization, the body to be moved 21 can be lifted and lowered without tilting it. Furthermore, the lifting device 1 extends long in the vertical direction on the floor surface 27 when in use (when lifting and lowering the body to be moved 21), and would be very likely to tip over if it existed alone. In contrast, in the moving system 31 for the body to be moved, each lifting device 1 is integrated with the body to be moved 21, and is rather supported by the body to be moved 21. This prevents the lifting device 1 from tipping over even if it extends long in the vertical direction on the floor surface 27.

[0080] In the moving system 31 for the moved body, the moving bodies 7 of the multiple lifting devices 1 are respectively installed on the multiple pillars 39 of the hoist support body 35 on which the hoist 33 is not installed. This allows the moving bodies 7 of the lifting devices 1 to be installed on the pillars 39 of the hoist support body 35 without being obstructed by the hoist 33.

[0081] The installation method of the crane 3 using the moving system 31 for the object to be moved comprises a column structure / beam installation procedure, a lifting device installation procedure, a hoist support lifting procedure, and a column structure extension procedure.

[0082] In the column structure / beam installation procedure, the column structures 69A of the first group are arranged one by one in a predetermined position on the floor surface 27, and the beams 37 are installed on the column structures 69A of the first group. In the lifting device installation procedure, the movable bodies 7 of the multiple lifting devices 1 are installed on the column structures 69 of the hoist support body before completion.

[0083] In the hoist support lifting procedure, the uncompleted hoist support is lifted by synchronously raising the movable bodies 7 of the multiple lifting devices 1. In the column component adding procedure, each of the second group of column components 69B is inserted below each of the first group of column components 69A, and each of the second group of column components 69B is added below each of the first group of column components 69A.

[0084] This allows the pillar components 69 to be added with a simple operation, and the length (standing height) of the pillars 39 can be easily adjusted.

[0085] Incidentally, in the above description, the lifting device 1 is used to install the crane 3, but the lifting device 1 may also be used to install something other than the crane 3 (for example, a stage 89 shown in FIG. 11).

[0086] 11 is taken as an example of the object to be moved 21 in the moving system 31 for moving the object to be moved. The stage 89 is a stage on which an object (e.g., a heavy object; more specifically, a device) 93 is placed, for example, temporarily.

[0087] The stage 89 is configured to include a top plate portion 91 and a plurality of pillars 39 extending in the vertical direction below the top plate portion 91 to support the top plate portion 91. Each of the plurality of pillars 39 is configured to be installed on each of the movable bodies 7 of the plurality of lifting devices 1.

[0088] Regarding the method of installing the stage 89 using the moving system 31 for the moved object, each of the multiple columns 39 is formed by connecting multiple column constituent bodies 69 in order in their longitudinal direction. The method of installing the stage 89 using the moving system 31 for the moved object 21 includes a column constituent body / top board installation procedure, a lifting device installation procedure, a procedure for lifting the stage before completion, and a procedure for adding a column constituent body.

[0089] The column structure / top plate section installation procedure is a procedure for arranging a first group of column structures 69A, which are composed of a plurality of column structures, one by one at a predetermined position on the floor surface 27 or the ground surface 87, and installing a top plate section 91 on the arranged first group of column structures 69A. The lifting device installation procedure is a procedure for installing each of the movable bodies 7 of the multiple lifting devices 1 on each of the column structures 69A of the uncompleted stage formed in the column structure / top plate section installation procedure.

[0090] The uncompleted stage lifting procedure is a procedure for lifting the uncompleted stage by synchronously lifting each of the movable bodies 7 of the multiple lifting devices 1 after the installation of the multiple lifting devices 1 in the lifting device installation procedure. The column component adding procedure is a procedure for inserting each of the second group of column components 69B composed of multiple column components into the lower side of each of the first group of column components 69A after lifting the uncompleted stage in the uncompleted stage lifting procedure, and adding each of the second group of column components 69B to the lower side of each of the first group of column components 69A.

[0091] The installation of the stage 89 using the lifting device 1 will be further described with reference to Fig. 11. Fig. 11 is a diagram showing the state after the installation of the stage 89 has been completed. The stage 89 is used when carrying in, to the second or higher floor of a building 95, equipment 93 that is too heavy to be lifted by human strength or that cannot be carried in by existing elevators or the like.

[0092] The building 95 has a door 99 on its side wall (exterior wall) 97 that can be opened and closed. In a normal state, the door 99 is closed. The door 99 may be opened to carry in the equipment 93 to an upper floor, such as the second floor, of the building 95. At this time, the stage 89 is set up as described above using the multiple lifting devices 1.

[0093] After the stage 89 is set up, the equipment 93 is placed on the stage 89 (top plate portion 91) using a crane 101, so that the equipment 93 is placed on the stage 89. Thereafter, the equipment 93 is carried into the building 95 through the open door 99. Since the equipment 93 is heavy, it is preferable to move the equipment 93 on a dolly (not shown) when carrying it in.

[0094] Although only two pillars 39 of the stage 89 are shown in Fig. 11, the pillars 39 are also lined up in a direction perpendicular to the paper surface of Fig. 11, so that the number of pillars 39 is four. Therefore, the pillar components 69 are added using four lifting devices 1 to form the pillars 39. Also, one pillar 39 of the stage 89 is formed by connecting a plurality of (for example, four) pillar components 69.

[0095] The above-mentioned lifting device 1 is an example of a lifting device having a lifting device main body which is configured with a guide portion extending long in the vertical direction and has a heavy object lifting device installation section at its upper end where a heavy object lifting device that lifts heavy objects using rigging is installed, and a moved object installation section where a moved object is installed, which engages with the guide portion of the lifting device main body so as to be freely movable in the vertical direction, and has a movable object on which rigging extending downward from the heavy object lifting device installed in the heavy object lifting device installation section is installed.

[0096] Although the present embodiment has been described above, the present embodiment is not limited to this, and various modifications are possible within the scope of the gist of the present embodiment. [Explanation of symbols]

[0097] 1 Lifting device 1A First lifting device 1B Second lifting device 3. Crane 5 Lifting device body 7 Mobile 9 Guide Rod 11 Lower joint 13 Upper joint 15 Heavy lifting equipment (chain block) 19 Rigging 21 Moved object 21A First part of the moving object 21B Second part of the moving object 23 Moved object installation section 23A First movable body installation part 23B Second movable body installation section 25 Caster 27 Floor 29 Caster Wheels 31 Mobility system for mobile objects 33 Hoist 35 Hoist Support 37 Beam 39 Pillars 69 Pillar structure 69A 1st group column structure 69B 2nd group column structure 87 Ground surface 89 Stages 91 Top plate

Claims

1. a lifting device body including a pair of guide rods extending vertically in parallel with each other, a lower joint that joins the pair of guide rods at their lower ends, and an upper joint that joins the pair of guide rods at their upper ends and on which a heavy-duty lifting device that lifts heavy weights using rigging is installed; a movable body on which a movable body installation section is provided and which is engaged with the pair of guide rods so as to be movable in the vertical direction, and on which a rigging extending downward from a heavy load lifting device installed on an upper joint of the lifting device main body is installed; A lifting device having the above structure.

2. A caster is provided on at least one of a lower joint of the lifting device body and a lower end of a guide rod of the lifting device body, The lifting device described in claim 1, wherein when the guide rod of the lifting device main body extends vertically on a floor surface or the ground surface, at least one of the lower joint of the lifting device main body and the lower end of the guide rod of the lifting device main body contacts the floor surface or the ground surface, and the caster moves away from the floor surface or the ground surface, and when the guide rod of the lifting device main body extends at a predetermined angle inclined to the vertical direction on the floor surface or the ground surface, the lower joint of the lifting device main body and the guide rod of the lifting device main body move away from the floor surface or the ground surface, and the wheels of the casters engage with the floor surface or the ground surface forming rolling pairs.

3. A plurality of lifting devices according to claim 1 or 2 are provided, a first portion of the object to be moved is installed on a first object to be moved installation section which is a moved object installation section provided on a moving object of a first lifting device among the plurality of lifting devices; A system for moving a moved object, the system being configured so that a second portion of the moved object is installed on a second moved object installation section, which is a moved object installation section provided on the moving object of a second lifting device among the plurality of lifting devices.

4. The object to be moved is a hoist support body that supports a hoist of a crane, The hoist support includes a beam extending horizontally on which the hoist is installed, and a plurality of columns extending vertically and supporting the beam, 4. The system for moving a moved object according to claim 3, wherein each of the plurality of pillars is configured to be installed on each of the moving objects of the plurality of lifting devices.

5. A method for installing the crane using the system for moving a movable object according to claim 4, comprising the steps of: Each of the plurality of columns is configured by connecting a plurality of column components in sequence in the longitudinal direction, A column structure / beam installation step of erecting a first group of column structures, which is composed of a plurality of the column structures, one by one at a predetermined position, and installing the beam on which the hoist is installed on the first group of column structures thus arranged; a lifting device installation step of installing each of the movable bodies of the plurality of lifting devices on each of the column structures of the hoist support body before completion and on which the hoist is installed, the column structure and beam installation step being formed; a pre-completion hoist support lifting step of lifting the pre-completion hoist support by synchronously raising each of the movable bodies of the plurality of lifting devices after the plurality of lifting devices are installed in the lifting device installation step; a column structure adding step of, after lifting the uncompleted hoist support in the uncompleted hoist support lifting step, inserting each of the second group of column structures composed of the plurality of column structures below each of the first group of column structures, and adding each of the second group of column structures below each of the first group of column structures; A method for installing a crane having the above structure.

6. the movable body is a stage on which an object is placed, The stage is configured to include a top plate and a plurality of columns extending in a vertical direction to support the top plate, 4. The system for moving a moved object according to claim 3, wherein each of the plurality of pillars is configured to be installed on each of the moving objects of the plurality of lifting devices.

7. A method for installing the stage using the system for moving a movable object according to claim 6, comprising the steps of: Each of the plurality of columns is configured by connecting a plurality of column components in sequence in the longitudinal direction, a column structure / top plate part installation step of arranging a first group of column structures, which are composed of a plurality of the column structures, one by one at a predetermined position, and installing the top plate part on the arranged first group of column structures; a lifting device installation step of installing each of the movable bodies of the plurality of lifting devices on each of the column structures of the uncompleted stage formed in the column structure / top plate portion installation step; a pre-completion stage lifting step of lifting the pre-completion stage by synchronously lifting each of the movable bodies of the plurality of lifting devices after the plurality of lifting devices are installed in the lifting device installation step; a column structure adding step of inserting each of the second group of column structures, which are composed of the plurality of column structures, below each of the first group of column structures after lifting the uncompleted stage in the uncompleted stage lifting step, and adding each of the second group of column structures below each of the first group of column structures; A method for setting up a stage having the above structure.

8. A lifting device main body is configured with a guide portion extending long in the vertical direction, and a heavy-weight lifting device installation portion is provided at an upper end portion thereof, on which a heavy-weight lifting device that lifts a heavy weight using a rigging is installed; a movable body on which a movable body installation section is provided and which engages with a guide section of the lifting device main body so as to be movable in the vertical direction, and on which a rigging extending downward from the heavy load lifting device installed on the heavy load lifting device installation section is installed; A lifting device having the above structure.

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