Swing lifting mechanism, lifting device, and method for lifting material and equipment

Abstract

To perform lifting operation efficiently in response to the weight of material and equipment and the condition of the lifting space.SOLUTION: A lifting device comprises a planar ring-shaped swinging rail, a plurality of swinging trolleys moving along the swinging rail, a rotating frame holding the plurality of swinging trolleys at equal intervals, and a plurality of suspension mechanisms installed at equal intervals on the rotating frame to support material and equipment.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a slewing and lifting mechanism for lifting and rotating materials and equipment, a lifting device equipped with the slewing and lifting mechanism, and a method for lifting materials and equipment using the lifting device. [Background technology]

[0002] For example, when replacing the deck of a road bridge, superstructure widening work may be carried out at the same time, widening the superstructure using the median opening to add a lane. Superstructure widening work involves merging the median strip to close the median opening.

[0003] The work to merge the median strips involves cutting and removing the wall parapets adjacent to the median strip openings on the inbound and outbound lanes, adding girders, and installing new deck slabs on the added girders. These processes include lifting materials and equipment to and from the ground and rotating the lifted materials to change their orientation.

[0004] As a device capable of both lifting and rotating such materials and equipment, for example, a sliding-type rotating device is disclosed in Patent Document 1. The sliding-type rotating device of Patent Document 1 includes a ring-shaped third support member, multiple third running members that move along the third support member, and a lifting holder provided on each of the multiple third running members. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 6908962 Summary of the Invention [Problem to be solved by the invention]

[0006] The sliding-type swivel device of Patent Document 1 can lift materials and equipment at multiple points using lifting fixtures provided on each of multiple third traveling members (hereinafter referred to as "swivel trolleys") and move them linearly along the support members.Furthermore, it can rotate along the ring-shaped third support member (hereinafter referred to as "swivel rail").

[0007] However, because the lifting fixture is installed directly on the swivel trolley, even if multiple lifting fixtures are used to lift equipment, the load may not be evenly distributed among the multiple swivel trolleys and rails. For this reason, while this system can handle equipment weighing as much as a chain block, handling heavy items that require the use of a hoist can be problematic.

[0008] In addition, the rotating trolleys on which the lifting fixtures are installed are positioned at equal intervals relative to the rotating rails. Therefore, if the lifting space for the equipment is narrow, the chains and wires of the lifting fixtures attached to the equipment may interfere with structures nearby.

[0009] The present invention has been made in consideration of the above-mentioned problems, and its main object is to efficiently carry out lifting operations in accordance with the weight of the materials and equipment and the state of the lifting space. [Means for solving the problem]

[0010] To achieve this objective, the slewing and lifting mechanism of the present invention is characterized by comprising a slewing rail that is ring-shaped when viewed from above, a plurality of slewing trolleys that move along the slewing rail, a rotating frame that holds the plurality of slewing trolleys at equal intervals, and a plurality of suspension mechanisms that are installed at equal intervals on the rotating frame and support equipment and materials.

[0011] The slewing and lifting mechanism of the present invention is characterized in that the rotating frame comprises an upper frame and a lower frame, the slewing trolley is connected to the upper frame, and multiple suspension mechanisms are supported on the lower frame.

[0012] The slewing and lifting mechanism of the present invention is characterized in that the suspension mechanism is a hoist.

[0013] The slewing lifting mechanism of the present invention is characterized in that the slewing trolley includes an outer running section that runs along the outer periphery of the slewing rail and an inner running section that runs along the inner periphery, the outer running section having a plurality of running wheels adjacent to each other in a direction parallel to the tangent to the slewing rail, and the inner running section having a plurality of running wheels adjacent to each other in a direction along the inner periphery of the slewing rail.

[0014] The lifting device of the present invention is characterized by comprising a swivel lifting mechanism of the present invention, a support frame having pillars, girders, and beams, and a moving mechanism provided within the support frame that supports the swivel lifting mechanism so that it can move in the girder direction and the beam direction.

[0015] The lifting device of the present invention is characterized in that the moving mechanism comprises a running rail parallel to the girder, a running trolley attached to the running rail, a lateral girder perpendicular to the running rail, and a lateral trolley attached to the lateral girder, the lateral girder being connected to the running trolley, and the slewing lifting mechanism being connected to the lateral trolley.

[0016] The method for lifting materials and equipment of the present invention is a method for lifting materials and equipment using the lifting device of the present invention, characterized in that the support frame is installed above and spanning the lifting space, and the materials and equipment suspended by the suspension mechanism are lifted using the lifting space.

[0017] The method for lifting materials and equipment of the present invention is characterized in that the lifting space is an opening in the median strip of a road bridge, the support frame is installed on the road bridge, and the materials and equipment suspended by the suspension mechanism are lifted using the opening in the median strip.

[0018] According to the swivel lifting mechanism, lifting device, and method for lifting equipment and materials of the present invention, a rotating frame is used to hold multiple swivel trolleys that move along a swivel rail at equal intervals and to support multiple suspension mechanisms at equal intervals, so that the load of equipment and materials suspended from the multiple suspension mechanisms is evenly distributed to the swivel trolleys and swivel rail via the rotating frame.

[0019] Therefore, compared to when the suspension mechanism is directly supported on each of multiple rotating trolleys, it is possible to lift heavy equipment and materials, and by using a hoist in the suspension mechanism, it is possible to lift heavy equipment and materials that are difficult to lift using a chain block, etc.

[0020] In addition, the suspension mechanism supported by the rotating frame is positioned further inside the swivel rail than the swivel trolley in a plan view. This ensures that even when the lifting space is narrow, sufficient space is secured between the chains and wires of the suspension mechanism suspending the equipment and any structures nearby, enabling safe lifting operations.

[0021] Furthermore, by moving the swivel trolley along the swivel rail, the suspended equipment can be rotated and turned around. This means that no matter what orientation the equipment is brought in, it can be rotated to match the lifting space and then lifted without having to be temporarily placed, further improving work efficiency.

[0022] Furthermore, if the rotating frame is constructed from an upper frame and a lower frame and the lower frame supports the suspension mechanism, the shape of the lower frame can be adjusted appropriately to optimize the number and placement of suspension mechanisms in accordance with the shape and weight of the equipment and materials, as well as the planar shape of the lifting space, making it possible to carry out lifting operations efficiently.

[0023] If a lifting device with such a swivel lifting mechanism mounted within a support frame is positioned across the lifting space, it will be possible to lift materials and equipment regardless of the state the materials and lifting space are in. Therefore, for example, by installing a lifting device across the median opening on a road bridge, it will be possible to efficiently lift materials and equipment between the ground and the road bridge by utilizing the median opening. [Effects of the Invention]

[0024] According to the present invention, by using a rotating frame that holds multiple rotating trolleys at equal intervals as they move along a rotating rail to support multiple suspension mechanisms, it is possible to efficiently carry out lifting operations for equipment and materials even when the lifting space is narrow or the weight of the equipment and materials is heavy. [Brief explanation of the drawings]

[0025] [Figure 1] 1 is a diagram showing a method for lifting materials and equipment in an embodiment of the present invention (part 1). FIG. [Figure 2] FIG. 2 is a diagram showing a method for lifting materials and equipment in an embodiment of the present invention (part 2). [Figure 3] FIG. 10 is a diagram showing a method for lifting materials and equipment in an embodiment of the present invention (part 3). [Figure 4] FIG. 10 is a diagram showing a method for lifting materials and equipment in an embodiment of the present invention (part 4). [Figure 5] 1 is a diagram showing a lifting device according to an embodiment of the present invention; [Figure 6] 1 is a diagram showing a swing and lifting mechanism according to an embodiment of the present invention; [Figure 7] 1 is a diagram showing a movement mechanism according to an embodiment of the present invention; [Figure 8] 10A and 10B are diagrams illustrating another example of a swing and lift mechanism according to an embodiment of the present invention. [Figure 9] 10A and 10B are diagrams illustrating an example of a lower frame provided on a rotating frame of a slewing and lifting mechanism according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0026] The details of the slewing and lifting mechanism, the lifting device, and the method for lifting materials and equipment of the present invention will be described below with reference to FIGS.

[0027] <<<Outline of the lifting device and slewing lifting mechanism>>> As shown in FIGS. 1 to 5, the lifting device 100 includes a support frame 10, a movement mechanism 20 provided within the support frame 10, and a slewing and lifting mechanism 30 supported by the movement mechanism 20.

[0028] As shown in Figure 6(a), the swivel lifting mechanism 30 comprises a swivel rail 40 that is ring-shaped in plan view, four swivel trolleys 50 that move along the swivel rail 40, and a rotating frame 60 connected to these four swivel trolleys 50. A pair of hoists W hangs down from the rotating frame 60. The pair of hoists W are arranged symmetrically with respect to the central axis C of the swivel rail 40.

[0029] <<<<How to lift equipment>>>> The method of lifting materials and equipment using the above-mentioned lifting device 100 will be explained in detail using the example of the case where, as shown in Figure 1, a central median opening E is used as a lifting space to lift a long girder block G from the ground onto the road bridge H during superstructure widening work on the road bridge H.

[0030] Furthermore, during the superstructure widening work for road bridge H, the wall parapet on the side of the median strip opening E on both the uphill and downhill lanes of road bridge H will be cut and removed. Next, the median strip opening E will be used to lift girder block G from the ground, and this lifted girder block G will be transported to the vicinity of the planned position for the superstructure widening of the median strip opening E.

[0031] After this, a girder block G is added to the cross beam of the road bridge H so as to close the median strip opening E, and the median strips are merged to widen the superstructure. In this embodiment, an example is taken of a case in which the lifting device 100 is used for the lifting work of hoisting the girder block G from the ground onto the road bridge H using the median strip opening E, which is part of the above-mentioned median strip merging work.

[0032] ≪≪Preparation process≫≫ First, as shown in FIG. 1, the lifting device 100 is carried onto the road bridge H, and the support frame 10 is installed so as to straddle the median strip opening E.

[0033] Guide rails 70 have been laid in advance on both sides of the median strip opening E, and the support frame 10 is installed on these guide rails 70. The support frame 10 is then moved along the guide rails 70 and held horizontally, and the lifting device 100 is installed at a lifting position for the girder block G at the median strip opening E. The moving mechanism 20 is also used to adjust the planar position of the slewing and lifting mechanism 30, and it is placed directly above the median strip opening E.

[0034] Simultaneously with or before or after the above work, girder block G is brought into the lifting space of the central median opening E. Girder block G is placed on the loading platform of the loading vehicle, with its extension perpendicular to the bridge axis. After this, wire R is let out from each of the pair of hoists W and connected to girder block G via the lifting balance S.

[0035] ≪≪Lifting process≫≫ As shown in Figure 2, once girder block G is suspended by hoist W, girder block G is rotated 90 degrees in the horizontal plane so that the extension direction of girder block G matches the extension direction (bridge axis direction) of central median opening E. To rotate girder block G, as shown in Figure 6(a), four swivel trolleys 50 synchronized along the swivel rail 40 are moved 90 degrees around the central axis of the swivel rail 40.

[0036] Then, the rotating frame 60, which maintains a constant spacing between the four swivel trolleys 50, rotates 90 degrees around the central axis of the swivel rail 40. As a result, the pair of hoists W hanging down from the rotating frame 60 move 90 degrees around the central axis of the swivel rail 40, so that the girder block G can be safely rotated via the hoisting balance S until its extension direction coincides with the extension direction of the central median opening E, and can then be easily brought to a stop.

[0037] In this way, the extension direction of the girder block G is aligned with the extension direction of the median strip opening E, and then the wire R of each hoist W is wound up and the girder block G is lifted up to a position above the road bridge H, as shown in Figure 3. Then, as shown in Figure 4, the transport platform 80 is brought in within the support frame 10 of the lifting device 100 so as to straddle the median strip opening E. The girder block G is lowered onto this transport platform 80 and placed on it, and then the girder block G is transported to the vicinity of the planned position for widening the superstructure of the median strip opening E.

[0038] As described above, by using the lifting device 100 equipped with the swivel lifting mechanism 30, even if the girder block G is transported by a loaded vehicle in a position extending perpendicular to the bridge axis below the median strip opening E, the swivel lifting mechanism 30 can be used to lift the girder block G from the loading platform, rotate its extension direction to the bridge axis direction, and lift it onto the road bridge H. This eliminates the need to unload the girder block G from the loading platform using a crawler crane or the like, while also changing its extension direction to the bridge axis direction and temporarily storing it there.

[0039] Furthermore, because the girder block G can be suspended at two points by two hoists W, load sway is suppressed, and it is possible to avoid situations in which the girder block G comes into contact with structures surrounding the median strip opening E. In this way, according to the method for lifting materials and equipment using the lifting device 100, the median strip opening E can be used to efficiently perform lifting operations for the girder block G and rotation operations to change the orientation of the girder block G.

[0040] <<<<<<Details of the lifting device>>>>> Details of the lifting device 100 used to lift the girder block G from the ground onto the road bridge H using the above-mentioned median strip opening E will now be described.

[0041] <<Support Frame>> As shown in Figures 4 and 5, the support frame 10 comprises pillar members 11, beam members 12, and girder members 13. As shown in Figure 4, a portal frame is formed by providing a beam member 12 so as to connect a pair of pillar members 11.

[0042] The portal frames each made up of the pillar members 11 and beam members 12 are arranged in parallel with a gap between them, and as shown in Figures 5 and 7, the beam members 12 are connected to each other by a pair of girder members 13. This gives the support frame 10 a generally rectangular shape in plan view.

[0043] The column members 11, beam members 12, and girder members 13 are all made of long steel material, and any of square steel pipes, H-shaped steel, etc. may be used. As shown in FIG. 4, the column members 11 are provided with running parts 111 at their lower ends, and as described above, are movable along guide rails 70 laid on the road bridge H. The running parts 111 may be provided with running wheels or the like, or may be provided with sliding members so as to slide along the guide rails 70. A movement mechanism 20 is connected to the underside of the beam members 12.

[0044] ≪≪Moving mechanism≫≫ As shown in Figure 7, the moving mechanism 20 is composed of a pair of running rails 21 arranged parallel to the girder member 13, a running trolley 22 that moves along the running rails 21, a pair of lateral rails 23 arranged parallel to the beam member 12, and a lateral trolley 24 that moves along the lateral rails 23.

[0045] The pair of traveling rails 21 are made of H-shaped steel and, as shown in Fig. 4, are arranged in parallel with a gap between them, with their upper surfaces fixed to the lower surface of the beam member 12. The traveling trolley 22 is made up of a roughly U-shaped trolley body 221 and a plurality of traveling parts 222 such as traveling wheels provided inside the trolley body 221.

[0046] In the traveling trolley 22 configured as described above, the roughly U-shaped trolley body 221 is arranged so as to fit into the lower side of the traveling rail 21, and the traveling part 222 moves on the lower flange of the H-shaped steel that forms the traveling rail 21. A pair of lateral rails 23 are connected so as to span across the trolley bodies 221 of the pair of traveling trolleys 22 that move along such a pair of traveling rails 21.

[0047] As shown in Figure 7, the pair of traverse rails 23 are arranged parallel to the pair of traveling rails 21 with a gap between them and perpendicular to them. Both ends of the traverse rails 23 are connected to the trolley body 221 of the opposing traveling trolley 22. The traverse trolley 24 that moves along the traverse rails 23 is composed of a roughly U-shaped trolley body 241 and a plurality of running parts 242 such as running wheels provided inside the trolley body 241.

[0048] 5, the horizontal trolley 24 configured as described above is arranged so that the roughly U-shaped trolley body 241 fits into the lower side of the horizontal rail 23, and the running part 242 moves on the lower flange of the H-shaped steel that forms the horizontal rail 23. A slewing and lifting mechanism 30 is connected to the underside of the paired horizontal trolley 24.

[0049] In this way, the swivel lifting mechanism 30 is connected to the traverse trolley 24, and the traverse rail 23 on which the traverse trolley 24 moves is connected to the paired traveling trolley 22. This allows the swivel lifting mechanism 30 to freely adjust its position in a plan view within the support frame 10.

[0050] Therefore, as explained in the above-mentioned method for lifting materials and equipment (preparation process), after the support frame 10 of the lifting device 100 is installed at a predetermined position on the road bridge H across the central median opening E, the planar position of the swivel lifting mechanism 30 relative to the central median opening E can be easily adjusted using the moving mechanism 20.

[0051] <<Slewing and lifting mechanism>> As described above with reference to FIGS. 5 and 6(a), the swivel lifting mechanism 30 includes the swivel rail 40, the swivel trolley 50, and the rotating frame 60.

[0052] <Rotating Rail> As shown in Fig. 6(a), the swivel rail 40 is made of a long steel member processed into a ring shape in a plan view. In this embodiment, a steel member having a cross section similar to that of an H-shaped steel beam is used, and as shown in Fig. 5, the upper flange 41 is connected to the trolley body 241 of the traversing trolley 24.

[0053] <Rotating trolley> As shown in Fig. 6(a), four swivel trolleys 50 are installed on the swivel rail 40, and as shown in Fig. 6(b), each is composed of a trolley body 51 and an outer circumferential running section 52 and an inner circumferential running section 53 provided inside the trolley body 51. As shown in Fig. 5, the trolley body 51 of the swivel trolley 50 is arranged so as to fit into the lower flange 42 and the lower side of the web 43 of the swivel rail 40.

[0054] 6(b), the outer circumferential running portion 52 moves on the outer bottom flange 42 sandwiching the web 43 of the swivel rail 40, and the inner circumferential running portion 53 moves on the inner bottom flange 42 sandwiching the web 43 of the swivel rail 40. The outer circumferential running portion 52 and the inner circumferential running portion 53 may have the same structure, but in this embodiment, they have different shapes.

[0055] 6(b), outer circumferential running section 52 has a pair of running wheels 523 each equipped with a gear 522 arranged on a flat base plate 521. Running wheels 523 each equipped with gear 522 are arranged at an interval on the same straight line parallel to a tangent line of swivel rail 40, and pinion 524 meshing with gear 522 is arranged between them. As a result, by operating a motor (not shown) to rotate pinion 524, the pair of running wheels 523 rotate via gear 522 and run on lower flange 42 outer than web 43 of swivel rail 40.

[0056] The inner circumference side running portion 53 is a driven wheel of the outer circumference side running portion 52, and has a pair of running wheels 533 with gears 532 arranged on a base plate 531, with a pinion 534 meshing with the gears 532 arranged between them. However, the inner circumference side running portion 53 differs from the outer circumference side running portion 52 in that the base plate 531 is bent into a roughly dogleg shape in a plan view, and the pair of running wheels 533 are arranged next to each other in a direction along the inner circumference of the turning rail 40.

[0057] In this way, the pair of running wheels 533 are arranged so that their respective running directions face the extension direction of the swivel rail 40. For this reason, the gears 532 are both formed into a truncated cone shape, and the gears 532 that mesh with them are also formed into a truncated cone shape. As a result, when the pinion 534 rotates, the pair of running wheels 533 rotate via the gears 532 and run on the lower flange 42 that is inside the web 43 of the swivel rail 40.

[0058] In this way, the running wheels 533 of the inner running part 53 that runs on the inside of the web 43 of the swivel rail 40 are configured so that their running direction is along the extension direction of the swivel rail 40, thereby allowing the swivel trolley 50 to run more smoothly. A rotating frame 60 is connected to the swivel trolley 50 configured in this way.

[0059] <Rotating Frame> The rotating frame 60 is made by processing steel material such as H-shaped steel, and as described above with reference to Figure 6(a), in addition to maintaining the spacing between the four rotating trolleys 50, it also has the function of supporting a pair of hoists W.

[0060] The rotating frame 60 has a square shape in plan view, with the swivel trolleys 50 connected to its four corners. This allows the four swivel trolleys 50 to be evenly spaced relative to the swivel rail 40, so when a heavy load acts on the four swivel trolleys 50 via the rotating frame 60, the load is evenly distributed across the swivel rail 40. This makes it possible to lift heavy equipment that would be difficult to lift using a chain block or the like.

[0061] Therefore, it is possible to hang a pair of hoists W from the rotating frame 60 and use these hoists W to suspend heavy girder blocks G. If the planned equipment is light and there is no risk of deformation of the swivel rail 40, the rotating frame 60 may be formed into a rectangular shape in plan view that extends beyond the swivel rail 40.

[0062] Furthermore, the pair of hoists W hanging from the rotating frame 60 are positioned in a plan view inside the rotating rail 40, relative to the rotating trolley 50. This ensures a large space between the wires R of the hoists W suspending the girder blocks G and structures or the like close to the median strip opening E, making it possible to carry out lifting operations more safely.

[0063] As described above, according to the swivel lifting mechanism, lifting device, and method for lifting equipment and materials, by using a rotating frame 60 that holds multiple swivel trolleys 50 at equal intervals as they move along the swivel rail 40 to support multiple suspension mechanisms, it is possible to efficiently carry out lifting operations for equipment and materials even when the lifting space is narrow or the weight of the equipment and materials is heavy.

[0064] The slewing and lifting mechanism, the lifting device, and the method for lifting materials and equipment of the present invention are not limited to the above-described embodiments, and various modifications are possible within the scope of the present invention.

[0065] For example, in this embodiment, an example is given of lifting a girder block G from the ground to a road bridge H using a central median opening E, but the lifting device 100 can be used at any construction site.

[0066] In this embodiment, a transport platform 80 is prepared separately, and the girder block G lifted by the hoist W is lowered and placed on the transport platform 80. However, a configuration may also be adopted in which a load receiving means capable of receiving materials and equipment such as the girder block G lifted by the hoist W is provided on the support frame 10 constituting the lifting device 100, and this is utilized.

[0067] Furthermore, a running section 111 is provided on the support frame 10, allowing the guide rail 70 to run, but it is also possible to adopt, for example, a stationary crane that does not move, and have the slewing and lifting mechanism 30 supported on it.

[0068] In addition, in this embodiment, four swivel trolleys 50 are installed on the swivel rail 40, but the number is not limited to four as long as they can be installed at equal intervals on the swivel rail 40. Furthermore, the rotating frame 60 is not limited to a square in plan view, and may be shaped into a regular polygon in plan view according to the number of swivel trolleys 50.

[0069] Furthermore, in this embodiment, the hoist W is used as the suspension mechanism, but this is not limitative, and a chain block or the like may also be used.

[0070] 8, the rotating frame 60 may have a laminated structure including an upper frame 61 and a lower frame 62. Specifically, the lower frame 62 is installed in a suspended state below the upper frame 61 via connecting fittings 63. The upper frame 61 holds four swivel trolleys 50 at equal intervals, and the lower frame 62 supports multiple hoists W.

[0071] In this way, when four swivel trolleys 50 are installed on the swivel rail 40, the upper frame 61 has a square shape in plan view. However, the lower frame 62 can be formed into any shape in plan view without being restricted by the upper frame 61, as long as multiple hoists W can be arranged at equal intervals around the central axis of the swivel rail 40.

[0072] Therefore, for example, as shown in Figure 9, if the lower frame 62 is formed into a regular octagon in plan view, a pair of hoists W can be hung further inside the swivel rail 40 than when they are connected to the rotating frame 60. This makes it possible to lift materials and equipment using multiple hoists W even in a narrower lifting space. It is also possible to install four hoists W inside the swivel rail 40.

[0073] In this way, by appropriately adjusting the shape of the lower frame 62, the number and placement of the suspension mechanisms can be optimized to correspond to the shape and weight of the equipment and materials, as well as the planar shape of the lifting space, making it possible to carry out lifting operations efficiently. [Explanation of symbols]

[0074] 100 Lifting equipment 10 Support Frame 11 Column members 111 Running part 12 Beam member 13 Girder members 20 Moving mechanism 21 Running rail 22 Traveling trolley 221 Trolley body 222 Running part 23 Traverse rail 24 Traverse trolley 241 Trolley body 242 Running part 30 Swing lifting mechanism 40 Swivel Rail 41 Upper flange 42 Lower flange 43 Web 50 Swivel trolley 51 Trolley body 52 Outer periphery running section 521 Circuit Board 522 Gear 523 Running Wheel 524 Pinion 53 Inner running section 531 Circuit Board 532 Gear 533 Running Wheel 534 Pinion 60 Rotating Frames 61 Upper frame 62 Lower frame 63 Connecting fittings 70 Guide Rail 80 Transport stand W hoist (hanging mechanism) S Hanging balance R wire E. Median strip opening (lifting space) H road bridge Girder Block (Equipment)

Claims

1. A swivel rail having a ring shape in plan view; a plurality of swivel trolleys that move along the swivel rail; a rotating frame that holds the plurality of rotating trolleys at equal intervals; a plurality of suspension mechanisms installed at equal intervals on the rotating frame and supporting the equipment; A slewing and lifting mechanism comprising:

2. The swing and lifting mechanism according to claim 1, the rotating frame comprises an upper frame and a lower frame; A slewing and lifting mechanism, characterized in that the slewing trolley is connected to the upper frame, and a plurality of the suspension mechanisms are supported on the lower frame.

3. The swing and lifting mechanism according to claim 1, A slewing and lifting mechanism characterized in that the suspension mechanism is a hoist.

4. The swing and lifting mechanism according to claim 1, the swivel trolley includes an outer periphery-side running portion that runs along the outer periphery of the swivel rail, and an inner periphery-side running portion that runs along the inner periphery, the outer circumferential running portion includes a plurality of running wheels adjacent to each other in a direction parallel to a tangent to the turning rail, A slewing and lifting mechanism characterized in that the inner circumference side running portion has a plurality of running wheels adjacent to each other in a direction along the inner circumference of the slewing rail.

5. The swing and lift mechanism according to claim 1; a support frame including columns, beams, and rafters; a movement mechanism provided within the support frame and supporting the slewing lifting mechanism so that the mechanism can move in the girder direction and the beam direction.

6. The lifting device according to claim 5, The moving mechanism is a running rail parallel to the beam; a traveling trolley provided on the traveling rail; a traverse girder perpendicular to the traveling rail; a traversing trolley provided on the traversing girder, The traverse girder is connected to the traveling trolley, A lifting device characterized in that the swivel lifting mechanism is connected to the traversing trolley.

7. A method for lifting materials and equipment using the lifting device according to claim 5 or 6, The support frame is installed above and across the lifting space, A method for lifting materials and equipment, characterized in that the materials and equipment suspended by the suspension mechanism are lifted using a lifting space.

8. The method for lifting materials and equipment according to claim 7, The lifting space is a median strip opening of a road bridge, Installing the support frame on the road bridge; A method for lifting equipment and materials, characterized in that the equipment and materials suspended by the suspension mechanism are lifted using the central median strip opening.

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