Method for setting up the object and conveying device

Abstract

To provide a method for installing objects and a conveying device that allow for easy installation of the objects. [Solution] The method for installing an object according to the embodiment comprises: placing the object on a transport trolley; driving the transport trolley on which the object is placed to position the object on an installation platform at the destination; supporting the object with a lifting device; moving the transport trolley away from below the object; and lowering the object with the lifting device to install it on the installation platform.

Description

[[Technical Field]]

[0001] Embodiments of the present invention relate to a method for installing an object carrying an electrical panel and a conveying apparatus. [[Background Art]]

[0002] Conventionally, there has been known a technology for constructing electrical equipment by installing large electrical panels such as power receiving and transforming panels, control panels and distribution panels on an installation stand provided, for example, in an electrical room of a building. When an electrical panel is carried in and installed at an installation site, for example, the electrical panel shipped from a factory is first placed on a horizontal pulling jig using a crane, and the jig is pulled to move it to the vicinity of the installation stand. Then, the electrical panel is lifted by a chain block provided on a gantry jig constructed in advance at the installation site, and the gantry jig is moved to a position directly above the installation stand for installation. This installation method requires large equipment such as a gantry jig for lifting the object at the installation site, and also increases the number of work processes. [[Prior Art Literature]] [[Patent Literature]]

[0003] [[Patent Literature 1]] Japanese Unexamined Patent Publication No. Hei 8-2888 [[Patent Literature 2]] Japanese Unexamined Patent Publication No. 2005-29105 [[Summary of the Invention]] [[Problem to be Solved by the Invention]]

[0004] The problem to be solved by the present invention is to provide an object installation method and a conveying device that can easily install an object. [[Means for Solving the Problem]]

[0005] The method for installing an object according to this embodiment comprises: placing the object on a transport trolley; driving the transport trolley on which the object is placed to position the object on an installation platform at the destination; supporting the object with a lifting device; moving the transport trolley away from below the object; and lowering the object with the lifting device to install it on the installation platform. [Brief explanation of the drawing]

[0006] [Figure 1] A plan view showing the configuration of the conveying device according to the embodiment. [Figure 2] A side view showing the electrical panel mounted on the conveying device. [Figure 3] A front view showing the conveying device with the electrical panel mounted on it. [Figure 4] A side view showing part of the electrical panel's configuration. [Figure 5] An explanatory diagram showing a part of the configuration of a transport device and electrical panel according to the first embodiment. [Figure 6] A side view showing the configuration of the engaging member. [Figure 7] A flowchart showing an example of an electrical panel installation method using the transport system according to the first embodiment. [Figure 8] An explanatory diagram showing how to install an electrical panel using the same transport system. [Figure 9] An explanatory diagram showing how to install an electrical panel using the same transport system. [Figure 10] An explanatory diagram showing an example of how to install an electrical panel. [Modes for carrying out the invention]

[0007] The following describes the transport system 1, the transport device 10, and the installation method of the electrical panel 100 according to the embodiment, using Figures 1 to 9. Figure 1 is a plan view showing the configuration of the transport device 10 according to the first embodiment. In Figure 1, for explanatory purposes, the base portion 102 and the lifting device 12 of the electrical panel 100, which is the object to be transported (object), are shown in place. Figure 2 is a side view of the transport device 10 on which the electrical panel 100 is placed. Figure 3 is a front view of the transport device 10 on which the electrical panel 100 is placed. The engaging member 15 is omitted in Figures 2 and 3. Figure 4 is a side view showing a part of the configuration of the electrical panel 100. Figure 5 is an explanatory diagram showing a part of the configuration of the transport device 10 and the electrical panel 100. In Figure 5, a part is shown in cross-section for explanatory purposes. Figure 6 is a side view showing the configuration of the engaging member 15, showing the engaging member 15 attached to the base portion 102 of the electrical panel 100. Figure 7 is a flowchart showing an example of an installation method of the electrical panel 100 using the transport system 1 including the transport device 10. Figures 8 and 9 are explanatory diagrams showing the installation method of the electrical panel 100 using the transport system 1. In the figures, X, Y, and Z represent three mutually orthogonal directions. In this embodiment, as an example, the installation orientation is described by illustrating that the X direction is the direction of travel during installation (first direction), the Y direction is the width direction (second direction), and the Z direction is the vertical direction (third direction).

[0008] As shown in Figure 8, the transport system 1 comprises a transport device 10, a suspension device 11, and a lifting device 12. The transport system 1 is used to transport a heavy object 100 from a source to a destination 110 within a building. For example, the object 100 is an electrical panel, and the destination 110 is a platform on which the object 100 is installed. In the following description, the object 100 will be referred to as the electrical panel 100, and the destination 110 as the platform 110.

[0009] Here, as shown in Figures 2 and 3, the electrical panel 100 comprises a cabinet 101 on which various electrical components (equipment) are mounted, and a base portion 102 provided at the bottom of the cabinet 101. The electrical panel 100 is a large electrical panel such as a power receiving and transforming panel, control panel, or distribution panel. For example, the electrical panel 100 is a cubicle-type gas-insulated switchgear (C-GIS) with SF6 (sulfur hexafluoride) gas, which has excellent insulating properties, sealed inside.

[0010] Cabinet 101 is an enclosure that forms an internal storage space. Cabinet 101 is configured, for example, in the shape of a rectangular parallelepiped. The bottom surface of Cabinet 101 is configured in the shape of a rectangle or square.

[0011] As shown in Figures 1 to 5, the base portion 102 is provided at the bottom of the cabinet 101. The base portion 102 comprises a plurality of base frames 103. For example, the base portion 102 is constructed by assembling a total of four base frames 103, two sets of which extend in two orthogonal directions, into a rectangular frame shape with an opening in the center. For example, the four base frames 103 are arranged opposite each other, overlapping the lower edges of the four outer edges of the rectangular bottom surface of the cabinet 101.

[0012] As shown in Figure 5, each base frame 103 is a channel steel integrally comprising, for example, a lower wall portion 103a, a vertical wall portion 103b which is a mounting wall portion, and an upper wall portion 103c. The base frame 103 has a groove 103d, which is a recess that opens to the outside of the base portion 102. The groove 103d is formed along the longitudinal direction of each base frame 103. For example, the lower wall portion 103a and the upper wall portion 103c protrude outward from the vertical wall portion 103b toward the rectangular frame-shaped base portion 102. In other words, the vertical wall portion 103b is positioned recessed inward toward the base portion 102 compared to the lower wall portion 103a and the upper wall portion 103c. In this embodiment, as an example, the outer edges of the lower wall portion 103a and the upper wall portion 103c are positioned directly below the outer edge of the bottom surface of the cabinet 101, and the vertical wall portion 103b is positioned set back inward from the outer edge of the cabinet 101 within the base portion 102.

[0013] As shown in Figures 4 to 6, the base frame 103 is configured to allow attachment of an engaging member 15, which is supported by the lifting hook 121 of the lifting device 12 during jacking operations in the transport process, and to allow removal of the engaging member 15 after the installation work is completed. For example, the base frame 103 has female screw holes 103e (mounting holes) into which the engaging member 15 is fastened by bolts B. The arrangement of the screw holes 103e is determined by conditions such as the size of the electrical panel 100 and its arrangement with surrounding members. For example, the engaging member 15 can be fastened from the outside to the outer surface of the vertical wall portion 103b by bolts B. The position of the screw holes 103e is set so that the lifting hook 121 of the lifting device 12 can be engaged with the fastened engaging member 15, and the lifting device 12 can be installed without interfering with surrounding members.

[0014] As shown in FIGS. 2, 3 and 5, the installation base 110, also called a channel base, is a base formed of, for example, C-shaped steel, L-shaped steel or the like, to which the electric panel 100 is fixed. The installation base 110 forms an installation surface 111 arranged at a predetermined height H0 from the floor of the electrical room. The installation surface 111 corresponds to the shape of the bottom surface of the electric panel 100, and is dimensioned to receive, for example, a base portion 102 provided at the lower part of the electric panel 100. As an example, the installation surface 111 of the installation base 110 is configured such that the dimension along the first direction during installation is longer than the length of the bottom surface portion of the electric panel 100 in the first direction. In addition, the width dimension of the installation surface 111 in the second direction is set to be approximately the same as the width dimension of the bottom surface portion of the electric panel 100 in the second direction and the width dimension of the base portion 102.

[0015] Next, the configuration of the conveying device 10 will be described with reference to FIGS. 1 to 6. As shown in FIGS. 1 and 5, the conveying device 10 includes a conveying carriage 13 and an engaging member 15. The conveying device 10 is a jig used for conveying the electric panel 100 from a conveying source to the installation base 110 at a conveying destination, and placing the electric panel 100 on the installation base 110.

[0016] As shown in FIGS. 1 to 3 and 5, the conveying carriage 13 is configured to be movable while the electric panel 100 is placed thereon. For example, the conveying carriage 13 can carry the electric panel 100, which is an object, from a conveying source to a conveying destination, and can position the electric panel 100 on the installation base 110 by straddling the installation base 110 at the conveying destination. The conveying carriage 13 includes a pair of support bases 30.

[0017] The support base 30 comprises a frame steel 31 serving as a support member and a pair of casters 32 serving as a traveling member, respectively. The pair of support bases 30 are not connected to each other and are configured to be movable independently. For example, when the electric panel 100 is conveyed, the pair of support bases 30 are arranged such that the longitudinal direction of the frame steels 31 is along the second direction, and are respectively arranged below two sides extending in the second direction among the outer edges of the bottom surface portion of the electric panel 100 to support the electric panel 100. The pair of support bases 30 are configured such that the electric panel 100 can be arranged directly above the installation table 110 without interfering with the installation table 110 installed at the conveyance destination.

[0018] The longitudinal dimension of the pair of frame steels 31 is configured to be larger than the dimension of the installation table 110 in the second direction. Further, the lower surface of the frame steel 31 is arranged above the installation surface 111. The frame steel 31 is used in a posture where the longitudinal direction is along the second direction when positioning the conveyance carriage 13 on the installation table 110.

[0019] As shown in FIG. 1 to FIG. 3 and FIG. 5, the plurality of casters 32 are respectively provided below both end portions of each frame steel 31. That is, in the conveyance carriage 13, the casters 32 are provided at a total of four locations at both end portions of the pair of frame steels 31. The casters 32 are arranged on the floor surface of the electrical room which is the traveling surface, and support the frame steel 31 at a position higher than the installation surface 111. That is, as shown in FIG. 5, the frame steel 31 is supported at a position where the height H1 from the floor surface to the lower surface of the frame steel 31 is larger than the height H0 of the installation surface 111. Further, as shown in FIG. 3, the pair of casters 32 provided on each frame steel 31 are arranged with an interval W1 larger than the width W0 of the installation table 110 in the second direction intersecting the first direction which is the traveling direction of the conveyance carriage 13 when positioning the target object on the installation table 110. Therefore, a space into which the installation table 110 can enter is formed between the plurality of casters 32 on the lower side of the support base 30 of the conveyance carriage 13.

[0020] The casters 32 only need to be able to transport the support base 30 to which the electrical panel 100 is fixed, and their position and number can be set as appropriate. Multiple casters 32 are composed of swivel wheels, or a combination of swivel wheels and fixed wheels. For example, the casters 32 are tilt rollers.

[0021] As shown in Figure 1, the engaging members 15 are attached in pairs to each of the four base frames 103 that make up the base portion 102, specifically to the pair of base frames 103 that extend in the first direction during installation. The engaging members 15 are positioned so as not to interfere with the casters 32. For example, the engaging members 15 are positioned at a predetermined distance from both ends of the pair of base frames 103.

[0022] As shown in Figures 5 and 6, the engaging member 15 integrally comprises a fastening piece 51 that is fastened to the vertical wall portion 103b of the base frame 103, and a claw portion 52 that extends to one side from the fastening piece 51.

[0023] The fastening piece 51 is configured in a flat plate shape and has a bolt hole 51a, and is fastened by a bolt B to the outer surface, which is one of the main surfaces of the vertical wall portion 103b in the groove 103d.

[0024] The claw portion 52 integrally comprises a pair of connecting pieces 52a and a bottom piece 52b extending from the main surface on one side of the fastening piece 51. When the engaging member 15 is attached to the base frame 103, a portion of the claw portion 52 is positioned within the groove 103d. The pair of connecting pieces 52a are, for example, triangular plate-shaped and have an upper edge that slopes downward and outward when attached. The bottom piece 52b is a plate-shaped member that connects the lower ends of the pair of connecting pieces 52a. For example, the bottom piece 52b is configured as a flat plate that is perpendicular or intersects the vertical direction when the engaging member 15 is attached to the base portion 102, and becomes an engaging portion into which the lifting hook 121 of the lifting device 12 engages during jack-up work in the conveying process. When the engaging member 15 is attached to the base portion 102, a gap G is formed between the bottom piece 52b and the lower wall portion 103a into which the lifting hook 121 of the lifting device 12 can be inserted. The lower surface of the bottom piece 52b forms an engagement surface 52c that is lifted by a jacking jig.

[0025] As shown in Figure 8, the suspension device 11 is, for example, a crane. The suspension device 11 supports the electrical panel 100 from a transport source, such as an outdoor transport source.

[0026] As shown in Figures 1 and 5, the lifting device 12 comprises a lifting hook 121 that engages with the engagement surface 52c, and a drive unit that moves the lifting hook 121 up and down. The lifting device 12 is, for example, a hydraulic jack. As shown in Figure 5, the lifting device 12 lifts the bottom piece 52b by raising the lifting hook 121 while it is inserted into the gap G formed on the underside of the bottom piece 52b, thereby contacting the engagement surface 52c, which is the underside of the bottom piece 52b.

[0027] Next, the installation method of the electrical panel 100, which is part of the manufacturing method for electrical equipment that constructs the electrical equipment using the transport system 1, will be explained with reference to Figures 7 to 9. As shown in Figures 7 and 8, the method for installing an electrical panel 100 using the transport system 1 involves transporting the electrical panel 100, which is suspended from a transport source inside or outside a building containing an electrical room, to the installation base 110 in the electrical room when constructing electrical equipment in an electrical room. The method for installing an electrical panel 100 using the transport system 1 comprises placing the electrical panel 100 on the support base 30 of the transport trolley 13, moving the transport trolley 13 to position the electrical panel 100 directly above the installation base 110 at the transport destination, supporting the electrical panel 100 with the lifting device 12, moving the transport trolley 13 to a safe place, and lowering the electrical panel 100 and installing it on the installation base 110. For example, each of the following steps is performed by one or more workers. In this embodiment, the pair of frame steels 31 travel above the installation base 110 in a position extending in a direction intersecting the direction of travel.

[0028] As a specific example, as shown in Figures 7 and 8, first, as a preliminary step, the electrical panel 100 is suspended and supported in advance by a suspension device 11 such as a crane, and a transport cart 13 is positioned directly below the suspended electrical panel 100 (step ST1). At this time, the orientation and position of the transport cart 13 are set according to the orientation of the electrical panel 100 on the installation base 110, for example. Then, the electrical panel 100 is lowered by the suspension device 11 and placed on the transport cart 13 (step ST2). In step ST2, with the transport cart 13 positioned directly below the suspension position, the suspended electrical panel 100 is lifted down, and the electrical panel 100 is installed on a pair of support bases 30 of the transport cart 13. At this time, the base portion 102 of the electrical panel 100 and the pair of support bases 30 may be fixed together with fastening members or the like.

[0029] Next, the transport cart 13 is operated to move the electrical panel 100 and transport it to the installation stand 110 (step ST3). At this time, the casters 32 are moved to transport the transport cart 13 with the electrical panel 100 on it to the vicinity of the installation stand 110 at the destination.

[0030] The transport operation is primarily performed by pulling, or by pulling and pressing. For example, to avoid applying load to the walls of the electrical panel 100 by pressing its sides, the transport cart 13 on which the electrical panel 100 is placed is pulled and pressed. Specifically, workers are positioned at the front and rear in the direction of travel, and they pull and move the transport cart 13. For example, the direction of travel is not limited to the direction of travel when installing on the mounting base 110.

[0031] Then, near the installation base 110, the orientation of the transport cart 13 is adjusted to match the installation position. For example, if the cart is moved in the second direction to the vicinity of the installation base 110, the orientation is changed by 90 degrees near the installation base 110 so that the extension direction of the pair of frame steels 31 is aligned with the second direction, which is perpendicular to the first direction of travel during installation. Then, the electrical panel 100 supported by the transport cart 13 is positioned directly above the installation base 110 (step ST4).

[0032] Here, as shown in Figures 2, 3, and 9, the pair of frame steels 31 extend along the width direction perpendicular to the direction of travel when positioning the electrical panel 100 on the mounting base 110. The second-direction spacing W1 of the casters 32 provided at each end of the pair of frame steels 31 is greater than the width W0 of the mounting base 110. In the height direction, the frame steels 31 are positioned above the mounting base 110. As a result, the transport cart 13 straddles the mounting base 110, and the electrical panel 100 moves in the direction of travel, passing above the mounting base 110, and is positioned directly above the mounting base 110. That is, the mounting base 110 passes under the frame steels 31, enters the space between the casters 32, and is positioned directly below the electrical panel 100.

[0033] Next, as shown in Figure 8, the electrical panel 100 is jacked up and supported by the lifting device 12 (step ST5). Specifically, as shown in Figure 5, the lifting hook 121 of the lifting device 12 is inserted into the gap G formed on the lower side of the claw portion 52, and the electrical panel 100 is lifted up by engaging it with the engaging surface 52c. If the base portion 102 of the electrical panel 100 and the support base 30 were fixed with fastening members in step ST2, the fastening members should be removed and the fixing released before jacking up. The engaging members 15 are provided on a pair of base frames 103 that are aligned with the direction of travel perpendicular to the frame steel 31, so that the lifting device 12 can be set in a position that does not interfere with surrounding members such as casters 32, making the jacking up operation easier.

[0034] Furthermore, as shown in Figure 8, in step ST6, with the base section 102 and the electrical panel 100 lifted and supported by the lifting device 12, the transport trolley 13 is moved away from directly beneath the electrical panel 100. For example, depending on the arrangement of surrounding components, the pair of support bases 30 may be moved away by moving them horizontally, or they may be moved away by lifting them upwards.

[0035] Next, the lifting device 12 is operated to jack down the electrical panel 100, thereby placing it on the mounting base 110 (step ST7).

[0036] Furthermore, the electrical panel 100, which is placed on the mounting base 110, is fixed to the mounting base 110 using fastening members, etc. (step ST8). Also, the engaging member 15 is removed from the base frame 103 by removing the bolt B that was fixing the engaging member 15. These steps complete the transport and installation of the electrical panel 100. These steps are repeated for all electrical panels 100 used in the electrical equipment, and then the electrical connections and settings of the placed electrical panels 100 are performed to construct the electrical equipment.

[0037] Furthermore, when recovering the electrical panel 100, the electrical panel 100 can be easily recovered by performing steps ST1 to ST8 in reverse order.

[0038] According to the installation method and transport device 10 for the electrical panel 100 of this embodiment, it is possible to reduce the number of work steps when installing the electrical panel 100 on the installation stand 110. This point will be explained using the conventional installation method for the electrical panel 100 shown in Figure 10. Figure 10 is a diagram showing a series of work steps in the transport of the conventional electrical panel 100.

[0039] As shown in Figure 10, in the conventional method of installing the electrical panel 100, first, a mobile gate-shaped support column 240 is assembled near the installation location to be transported (step ST11). Then, multiple casters 230 are placed under the electrical panel 100, which is suspended and supported by a lifting device 210 such as a crane at the transport source. For example, the casters 230 are positioned at each of the four corners of the underside of the electrical panel 100, and the object is lowered by the lifting device 210 and placed on the multiple casters 230 (step ST12). After that, the object is moved by running the casters 230 to directly below the gate-shaped support column 240 assembled near the installation base 250 located at the transport destination (step ST13). Then, the electrical panel 100 is lifted using suspension members such as chain blocks attached to the support column 240 (step ST15), positioned directly above the installation base 250 (step ST16), and lowered using the suspension members to place the electrical panel 100 onto the installation base 250. After that, the gate-shaped support column 240 is removed. These steps complete the transportation and installation of the electrical panel 100. This method requires large equipment such as the gate-shaped support column 240 for lifting at the installation site, and also involves many work steps.

[0040] In contrast, according to the installation method, transport system 1, and transport device 10 of this embodiment, the installation base 110 is configured to be able to enter under the transport trolley 13, making installation on the installation base 110 easier.

[0041] In other words, since the transport trolley 13 has a space formed below the support base 30 and the electrical panel 100 where the installation platform 110 is placed, simply by moving the transport trolley 13 toward the installation platform 110, the transport trolley 13 can straddle the installation platform 110, and the electrical panel 100 can be moved directly above the installation platform 110. By using this transport system 1, the number of work steps can be greatly reduced, and the amount of manpower required can be reduced. Specifically, in the work of installing the electrical panel 100 onto the installation platform 110, it is possible to reduce not only the number of steps but also the amount of work, or man-hours, required.

[0042] Furthermore, the installation method using the transport system 1 according to this embodiment is a simple operation that involves moving the transport trolley 13 horizontally to move the electrical panel 100 and supporting it with the lifting device 12. Compared to, for example, the case where a gate-type jig is used to suspend the panel during installation, this method allows for installation in a smaller space. Also, compared to the case where the electrical panel 100 is suspended from above on the installation base 110 using a suspension device, the effects of shaking and other vibrations can be suppressed, and the posture of the electrical panel 100 can be stabilized. Therefore, it is easier to support the electrical panel 100 in the correct position on the installation base 110, and damage to the electrical panel 100 due to impacts such as shaking can be prevented. In addition, since the transport trolley 13 uses casters 32 such as chill rollers, the direction of travel can be easily defined, allowing for easy changes in direction in a small space.

[0043] Furthermore, since the electrical panel 100 according to the above embodiment is configured to be able to attach an engaging member 15 that engages with the lifting device 12, the skill required of the worker during jack-up work can be reduced. Also, since the engaging member 15 can be removed when installation is complete, the impact on the appearance can be minimized. Note that if the distance from the base frame 103 to the claw portion 52 of the engaging member 15 becomes large, it becomes difficult to lift, but by positioning a part of the engaging member 15 within the groove 103d, the outward protrusion of the claw portion 52 can be suppressed. Therefore, the engaging surface 52c can be secured in a position that makes it easy to lift.

[0044] Furthermore, since the transport trolley 13 is composed of multiple independently movable support bases 30, the shape of the transport trolley 13 can be adjusted to flexibly accommodate the transport of electrical panels 100 of different shapes and sizes. In addition, since the multiple support bases 30 that make up the transport trolley 13 can be moved independently, it is easy to handle, even when the transport trolley 13 needs to be moved out of the way.

[0045] Furthermore, the transport trolley 13 has multiple support bases 30 spaced apart, making it lightweight and reducing the contact area with the bottom surface of the electrical panel 100. As a result, the transport trolley 13 is lightweight, making it easy for workers to set up and remove. In addition, because it is supported on a pair of steel frames 31, the load is more easily distributed compared to a configuration where multiple chill rollers support the four corners.

[0046] As described above, the installation method for the electrical panel 100 and the transport device 10 according to this embodiment make it possible to reduce the number of steps and man-hours in the transport operation.

[0047] It should be noted that the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the invention. For example, in the above embodiment, the suspension device 11 is exemplified as a crane device, but it is not limited to this, and may have other configurations, such as a suspension jig with a chain block attached to a support member. Also, the transport trolley 13 is shown as being composed of a pair of frame steels 31 and four casters 32, but it is not limited to this. For example, in the transport trolley 13, it is sufficient that the casters 32 do not interfere with the mounting base 110 and that the mounting base 110 can enter under the object supported by the transport trolley 13, and the specific configuration of the support base 30 is not limited to the above.

[0048] According to the installation method of the electrical panel 100 and the transport device 10 of at least one embodiment described above, the number of steps and man-hours in the transport operation can be reduced.

[0049] While several embodiments of the present invention have been described, these embodiments are presented as examples only and are not intended to limit the scope of the invention. These novel embodiments can be carried out in a variety of other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims of the invention and its equivalents. [Explanation of symbols]

[0050] 1...Conveying system, 10...Conveying device, 11...Suspension device, 12...Lifting device, 13...Conveying trolley, 15...Engaging member, 30...Support base, 31...Frame steel (support member), 32...Caster (running member), 121...Lifting hook, 51...Fastening piece, 51a...Bolt hole, 52...Claw piece, 52a...Connecting piece, 52b...Bottom piece, 52c...Engaging surface, 100...Electrical panel, 101...Cabinet, 102...Base part, 103...Base frame, 103a...Lower wall part, 103b...Vertical wall part (mounting wall part), 103c...Upper wall part, 103d...Groove, 103e...Screw hole, 110...Installation base, 111...Installation surface.

Claims

1. Placing the object on the transport trolley, The transport trolley on which the object is placed is driven, and the object is positioned on the installation platform at the destination. The object is supported by a lifting device, To move the transport trolley away from below the object, By lowering the object using the aforementioned lifting device, it is placed on the aforementioned mounting platform. A method for installing an object, comprising the following features.

2. The transport trolley comprises a pair of support bases, each having a plurality of traveling members and a support member supported by the plurality of traveling members. The method for installing an object according to claim 1, wherein the plurality of the traveling members are arranged at intervals greater than the dimensions of the installation platform in a direction intersecting the direction of travel of the transport trolley when positioning the object on the installation platform.

3. The method for installing an object according to claim 1, further comprising suspending and supporting the object at the source of transport, and positioning the transport trolley beneath the suspended object before placing the object on the transport trolley.

4. A support member on which the object is placed, A plurality of traveling members that support the support member, Equipped with a transport trolley having, A transport device in which multiple traveling members are arranged with space between them that allows a mounting platform for placing the object to enter.

5. With the object placed on the support member, the transport trolley moves along, thereby enabling the object to be positioned on the mounting platform on which it is to be placed. The transport device according to claim 4, wherein the plurality of traveling members are arranged at intervals greater than the dimensions of the mounting platform in a direction intersecting the direction of travel when positioning the object on the mounting platform.

6. A support base comprising the support member and a plurality of the running members is provided in a pair, The support member is a frame steel, and the running member is a caster provided at both ends of the frame steel. The conveying device according to claim 4, wherein, when positioning the object on the mounting base, the frame steel extends above the mounting base in a direction intersecting the direction of travel when positioning the object on the mounting base.

7. The conveying device according to claim 4, wherein the object is an electrical panel comprising a housing for housing equipment and a base portion provided at the lower part of the housing and having a mounting wall portion configured to allow attachment of an engaging member for engaging with a lifting device.

8. The conveying device according to claim 7, wherein the engaging member is fastened to the outer surface of the mounting wall of the base portion, extends outward from the mounting wall portion, and has a claw portion on its lower side that constitutes an engaging surface for engaging with the lifting device.

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