Exterior replacing device

Abstract

To provide a device which replaces an exterior of a building whose load on an operator is small.SOLUTION: An exterior replacing device 100 used in a building 1 where a guide rail 30 extending vertically is provided includes: a body part 110 oppositely arranged with respect to an outside surface of the building 1; and a lifting part 120 for moving up / down the body part 110. The body part 110 includes: a guide part 160 for moving the body part 110 along the guide rail 30, and for restricting the movement in the horizontal direction of the body part 110; and a replacement part 170 for replacing an exterior material 20 of the building 1.SELECTED DRAWING: Figure 11

Description

[Technical field]

[0001] The present invention relates to a case exchange device. [Background technology]

[0002] When replacing exterior materials such as the exterior walls or curtain walls of a building, scaffolding is set up around the building, and after the replacement work is completed, the scaffolding is dismantled and removed. In this case, there are problems such as the cost of setting up and removing the scaffolding and the length of the construction period.

[0003] Patent Document 1 discloses a lifting device for building renovation that is arranged on the periphery of a building. This lifting device makes it possible to replace the exterior of the building without installing scaffolding around the building. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2022-101207 Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, in the lifting device for building renovation described in Patent Document 1, workers who get on the lifting platform perform building renovation work. Therefore, if the renovation work is performed in rainy weather, the burden on the workers is large.

[0006] The present invention has been made in consideration of the above circumstances, and has an object to provide a device for replacing the exterior of a building that places a small burden on workers. [Means for solving the problem]

[0007] In order to solve the above problems, an exterior replacement device is provided for use in a building equipped with guide rails extending vertically, the exterior replacement device comprising: a main body portion arranged opposite the exterior surface of the building; and a lifting portion for raising and lowering the main body portion, the main body portion having a guide portion for moving the main body portion along the guide rail and regulating the horizontal movement of the main body portion; and a replacement portion for replacing the exterior material of the building. Effect of the Invention

[0008] According to the present invention, the burden on workers is reduced when replacing the exterior of a building. [Brief description of the drawings]

[0009] [Figure 1] FIG. 2 is a diagram showing the configuration of a building 1. [Diagram 2] FIG. 2 is a front view of the building 1 with the exterior material 20 and guide rails 30 omitted. [Diagram 3] 3 is a cross-sectional view taken along line AA in FIG. 2. [Figure 4] FIG. 2 is a front view of the exterior material 20. [Diagram 5] FIG. 2 is a front view of the exterior replacement device 100. [Figure 6] FIG. 2 is a top view of the exterior replacement device 100. [Figure 7] 6 is a cross-sectional view of FIG. 5 taken along line B-B. [Figure 8] 8 is a cross-sectional view taken along CC in FIG. 7 . [Figure 9] FIG. 8 is a cross-sectional view taken along the line DD in FIG. [Figure 10] FIG. 2 is a control block diagram of the exterior exchange device 100. [Figure 11] 1 is a front view of the exterior material replacement device 100 supporting the exterior material 20. FIG. [Figure 12] 12 is a cross-sectional view of FIG. 11 taken along line E-E. [Figure 13] 1 is a diagram showing a state in which the exterior material 20 is attached to the bracket 41. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. However, the embodiment described below is subject to various technically preferable limitations for carrying out the present invention, but the scope of the present invention is not limited to the following embodiment and illustrated examples.

[0011] <Building composition> Fig. 1 is a diagram showing a schematic configuration of a building 1 according to an embodiment of the present invention. The building 1 is, for example, an office building having multiple floors. In Fig. 1, the direction in which multiple floors are stacked is the up-down direction, and the direction perpendicular to the up-down direction is the horizontal direction. The horizontal direction is the direction from the outside to the inside of the building 1 as the front-rear direction, and the direction perpendicular to the front-rear direction is the left-right direction.

[0012] The building 1 comprises a pillar 10, an exterior material 20, and a guide rail 30.

[0013] The pillars 10 are members extending in the vertical direction. Fig. 2 is a front view of the building 1 with the exterior materials 20 and guide rails 30 omitted for the sake of explanation. A beam 11 extending in the horizontal direction is fixed between the two pillars 10. The beam 11 supports a floor slab (not shown), and the floors of the building 1 are separated by the floor slab. The pillars 10 are provided with fasteners 40 near the beams 11.

[0014] The fastener 40 is a member that fixes the exterior material 20 to the pillar 10. The fastener 40 includes a bracket 41, a bolt 42, and a nut 43 (an example of a fixing member).

[0015] The bracket 41 is a member for fixing the exterior material 20 to the pillar 10. The bracket 41 is fixed to the left and right side surfaces of the pillar 10. As shown in Fig. 3, the bracket 41 is fixed to the rear of the beam 11 (toward the outside of the building 1) so as to protrude in the left and right directions from the pillar 10. The bracket 41 is provided with a bolt 42.

[0016] The bolt 42 and the nut 43 are members for fastening the exterior material 20 to the bracket 41. The bolt 42 is provided to protrude rearward from the bracket 41. Note that the structure for fixing the exterior material 20 to the column 10 is not limited to the configuration of the bracket 41, the bolt 42, and the nut 43, and various fixing structures known in the art can be used.

[0017] The exterior material 20 is a member that separates the indoors from the outdoors of the building 1. As shown in Fig. 4, the exterior material 20 is a rectangular plate material when viewed in the front-rear direction. The exterior material 20 has fastening holes 21 and support holes 22.

[0018] The fastening holes 21 are holes into which the bolts 42 are inserted. The fastening holes 21 are holes that penetrate the exterior material 20 in the front-rear direction. In this embodiment, the fastening holes 21 are provided in the vicinity of each of the four corners of the exterior material 20.

[0019] The support holes 22 are holes used when replacing the exterior material 20. The support holes 22 are holes that penetrate the exterior material 20 in the front-rear direction. In this embodiment, the support holes 22 are rectangular holes that are long in the left-right direction. Furthermore, a total of four support holes 22 are provided at the top and bottom of the exterior material 20, two on each side, spaced apart in the left-right direction.

[0020] The exterior material 20 is positioned such that bolts 42 are inserted into the four support holes 22. Then, with the front surface of the exterior material 20 and the bracket 41 in contact with each other, the nuts 43 and the bolts 42 are fastened so that the exterior material 20 is sandwiched between the bracket 41 and the nuts 43, thereby fixing the exterior material 20 to the bracket 41, as shown in FIG.

[0021] When the exterior material 20 is fixed to the bracket 41, gaps are generated between adjacent exterior materials 20 and between the exterior material 20 and the column 10. Such gaps are filled with a caulking material (not shown). In addition, when the exterior material 20 is fixed to the bracket 41, the support hole 22 is also filled with a caulking material. Therefore, wind and rain do not enter the interior of the building 1 through the gaps and the support hole 22.

[0022] The guide rail 30 is a member that extends in the vertical direction. As shown in Fig. 3, the guide rail 30 is fixed to the rear surface (the outside of the building 1) of the pillar 10. The guide rail 30 has a rectangular cross section when viewed in the vertical direction, and has a groove 31 provided on the rear surface.

[0023] (Exterior replacement device) Next, a description will be given of the exterior replacement device 100 used when replacing the exterior material 20. The exterior replacement device 100 is a device that replaces the exterior material 20 in a building 1 in which a guide rail 30 is provided. The exterior replacement device 100 includes a main body unit 110, a lifting unit 120, an imaging unit 130, a control unit 140, and a remote control unit 150.

[0024] The main body 110 is a frame constituting the exterior replacement device 100. As shown in FIG. 5, the main body 110 is composed of an upper frame 111 extending left and right, a lower frame 112 also extending left and right, and a pair of left and right side frames 113. The upper frame 111 and the lower frame 112 are connected via the side frames 113 and have a rectangular frame shape when viewed in the front-rear direction. The upper frame 111 and the lower frame 112 have a box shape with a hollow inside. The upper frame 111 has a rectangular through hole 111A provided on the lower surface. Two through holes 111A are provided on the lower surface of the upper frame 111 with a gap therebetween in the left-right direction. In the left-right direction, the distance between the through holes 111A is equal to the center distance between the two support holes 22. On the other hand, the lower frame 112 has a rectangular through hole 112A provided on the upper surface. Two through holes 112A are provided at a distance in the left-right direction on the upper surface of the lower frame 112. The distance in the left-right direction between the through holes 112A is equal to the center-to-center distance between the two support holes 22. The main body 110 has a guide portion 160 and a replacement portion 170.

[0025] The guide portion 160 moves the main body portion 110 along the guide rail 30, and restricts horizontal movement of the main body portion 110. The guide portion 160 has a roller attachment portion 161 and a roller 162.

[0026] The roller mounting portion 161 is a portion where the roller 162 is attached. The roller mounting portion 161 is provided to protrude forward from the front surface (the surface facing the building 1) of the upper frame 111 and the lower frame 112. The roller mounting portions 161 are provided on the upper frame 111 and the lower frame 112 so as to form a left-right pair. The left-right distance between the pair of left-right roller mounting portions 161 is equal to the distance from the groove 31 of one guide rail 30 to the groove 31 of the other guide rail 30 of two adjacent guide rails 30 of the building 1. The width of the roller mounting portion 161 is smaller than the width of the groove 31.

[0027] The roller 162 is a cylindrical member. The roller 162 is attached to the front end of the roller attachment portion 161 so as to be rotatable relative to the roller attachment portion 161 with the left-right direction as a rotation axis. In this embodiment, two rollers 162 are attached to one roller attachment portion 161 so as to sandwich the roller attachment portion 161. The diameter of the roller 162 is smaller than the length of the guide rail 30 in the front-rear direction. In addition, the combined length of the two rollers 162 and the roller attachment portion 161 in the left-right direction is smaller than the inner length of the guide rail 30.

[0028] The replacement parts 170 are elements used in the replacement work of the exterior material 20. In this embodiment, a total of four replacement parts 170 are provided, two on the upper frame 111 and two on the lower frame 112. The replacement parts 170 have a support part 171, a horizontal movement part 172, and an attachment / detachment part 173.

[0029] The support portion 171 is a member that supports the exterior material 20. The support portion 171 is composed of a claw portion 171A extending in the front-rear direction and an upper and lower support portion 171B extending in the up-down direction from the rear end of the claw portion 171A, and is formed in a substantially L-shape when viewed in the left-right direction. The width (length in the left-right direction) of the claw portion 171A is shorter than the long side of the support hole 22. In addition, the thickness (length in the up-down direction) of the claw portion 171A is shorter than the short side of the support hole 22. The front end of the claw portion 171A is formed with a protrusion that protrudes upward from the upper surface of the claw portion 171A. The rear end of the claw portion 171A is continuous with one end of the upper and lower support portion 171B. In addition, the other end of the upper and lower support portion 171B is attached to the horizontal movement portion 172.

[0030] The horizontal movement units 172 move the support units 171 in the front-rear direction. Two horizontal movement units 172 are provided inside the upper frame 111, and two are provided inside the lower frame 112. The horizontal movement units 172 have a motor and a roller connected to the motor and rotatably provided. The horizontal movement units 172 move along rails 174 provided inside the upper frame 111 or the lower frame 112.

[0031] The rails 174 provided inside the upper frame 111 are provided in a pair on both the left and right sides of the through hole 111A along the through hole 111A. The pair of rails 174 extend in the front-rear direction. The left-right distance between the pair of rails 174 is approximately the same as or longer than the width of the horizontal moving part 172 with the through hole 111A as the center. Since the rails 174 are provided in this manner, the horizontal moving part 172 moves in the front-rear direction along the rails 174. In addition, the other end of the vertical support part 171B is attached to the lower surface of the horizontal moving part 172. The vertical support part 171B protrudes from the inside to the outside of the upper frame 111 through the through hole 111A.

[0032] Meanwhile, the rails 174 provided inside the lower frame 112 are provided in a pair on both the left and right sides of the through hole 112A along the through hole 112A. The pair of rails 174 extend in the front-rear direction. The left-right distance between the pair of rails 174 is approximately the same as or longer than the width of the horizontal moving part 172 with the through hole 112A as the center. Since the rails 174 are provided in this manner, the horizontal moving part 172 moves in the front-rear direction along the rails 174. In addition, the other end of the vertical support part 171B is attached to the upper surface of the horizontal moving part 172. The vertical support part 171B protrudes from the inside to the outside of the lower frame 112 through the through hole 112A.

[0033] The attachment / detachment part 173 is a part for attaching and detaching a fixing member that fixes the exterior material 20 to the building 1. In this embodiment, the attachment / detachment part 173 is an electric impact wrench for tightening the nut 43 attached to the bolt 42. The attachment / detachment part 173 is provided on the upper and lower support parts 171B. Note that the attachment / detachment part 173 may use an appropriate tool depending on the structure of the fastener 40.

[0034] The lifting unit 120 moves the main body unit 110 in the up and down direction while hanging it. The lifting unit 120 includes a winch device 121 and a wire 122.

[0035] The winch device 121 pays out and winds up the wire 122. The winch device 121 is composed of a drum to which the base end of the wire 122 is connected and around which the wire 122 is wound, and a motor that pays out and winds up the wire 122 by rotating the drum. The tip of the wire 122 is fixed to the upper surface of the upper frame 111. When the winch device 121 pays out the wire 122, the main body 110 descends. When the winch device 121 winds up the wire 122, the main body 110 ascends. In this embodiment, the winch device 121 is installed on the roof of the building 1. The winch device 121 may be a lifting device such as a crane.

[0036] The photographing unit 130 photographs the working area of ​​the replacement unit 170. The photographing unit 130 is, for example, a camera capable of photographing video. In this embodiment, the photographing unit 130 is installed on the upper surface of the upper frame 111. Note that a plurality of photographing units 130 may be installed in the main body unit 110, and may be installed in a location other than the upper frame 111.

[0037] The control unit 140 controls the operation of the lifting unit 120, the photographing unit 130, and the replacement unit 170. FIG. 9 is a control block diagram of the exterior replacement device 100. The control unit 140 is connected to the winch device 121, the photographing unit 130, the remote control unit 150, the horizontal movement unit 172, and the attachment / detachment unit 173 so as to be capable of wireless communication. The control unit 140 receives a control signal from the remote control unit 150 and transmits the control signal to the winch device 121, the photographing unit 130, the horizontal movement unit 172, and the attachment / detachment unit 173. The control unit 140 also receives image information transmitted from the photographing unit 130 and transmits the image information to the remote control unit 150. The control unit 140 may be connected to the winch device 121, the photographing unit 130, the remote control unit 150, the horizontal movement unit 172, and the attachment / detachment unit 173 by wired communication.

[0038] The remote control unit 150 is an operation device for an operator to operate the exterior replacement device 100 from a remote location. The remote control unit 150 is, for example, a terminal device such as a personal computer, a tablet terminal, or a smartphone. The remote control unit 150 is connected to the control unit 140 so as to be capable of wireless communication. The remote control unit 150 has a display unit 151 that displays image information captured by the imaging unit 130, programs to be executed by each element communicatively connected to the control unit 140, and the like, and an input unit 152 through which the operator inputs a control program to be transmitted to each element communicatively connected to the control unit 140, or selects and executes the control program.

[0039] (Replacing exterior materials using exterior replacement equipment) Next, a method for replacing the exterior material 20 using the exterior replacement device 100 will be described. Note that, before starting to replace the exterior material 20, the worker removes the caulking material blocking the gaps and support holes 22 formed on the outer periphery of the exterior material 20 before replacement.

[0040] [S1: Deploy and lower the exterior replacement device] First, the worker places the exterior replacement device 100 on the roof of the building 1. Next, the worker suspends the exterior replacement device 100 using a crane or the like placed on the roof of the building 1, and moves the exterior replacement device 100 so that the rollers 162 are placed inside the guide rail 30. Then, the worker lowers the exterior replacement device 100 so that all the rollers 162 are placed inside the guide rail 30, and removes the exterior replacement device 100 from the crane or the like. That is, the main body 110 is placed facing the outer surface of the building 1. Next, the worker operates the input unit 152 to lower the exterior replacement device 100 along the outer surface of the building 1. At this time, since the rollers 162 move only in the vertical direction by the guide rail 30, the exterior replacement device 100 is restricted from moving in the horizontal direction and moves only in the vertical direction. Next, the worker lowers the exterior replacement device 100 to a location where the exterior material 20 to be replaced is attached. Then, the worker stops the descent of the exterior replacement device 100 at a position where the exterior replacement device 100 is disposed in front of the exterior material 20 to be replaced. At this time, the worker adjusts the vertical position of the exterior replacement device 100 so that the position of the claw portion 171A is the same as the position of the support hole 22 in the vertical direction.

[0041] [S2: Remove the exterior material] Next, the worker operates the input unit 152 to move the horizontal moving unit 172 forward. Then, the claw portion 171A is inserted into the support hole 22. Also, the attachment / detachment portion 173 reaches the position of the nut 43 fastened to the bolt 42. Next, the worker operates the input unit 152 to activate the attachment / detachment portion 173 and remove the nut 43 from the bolt 42. Next, the worker operates the input unit 152 to slightly raise the exterior replacement device 100 and place the exterior material 20 on the claw portion 171A. Next, the worker operates the input unit 152 to move the horizontal moving unit 172 backward. Then, a protrusion provided at the front end of the claw portion 171A hooks the exterior material 20, and the exterior material 20 moves backward in accordance with the movement of the horizontal moving unit 172. As a result, the exterior material 20 is removed from the bolts 42, and is stored between the upper frame 111 and the lower frame 112 of the main body 110, as shown in FIG. 12. Next, the worker operates the input unit 152 to raise the exterior material replacement device 100 to the roof of the building 1. Then, the worker collects the exterior material 20 from the exterior material replacement device 100.

[0042] [S3: Attaching exterior materials] Next, the worker loads a new exterior material 20 onto the exterior replacement device 100. The worker loads the exterior material 20 onto the exterior replacement device 100 so that the claw portions 171A are inserted into the support holes 22 of the exterior material 20. Next, the worker operates the input unit 152 to lower the exterior replacement device 100 to the position where the exterior material 20 was removed in S2 (see FIG. 11). At this time, the worker adjusts the vertical position of the exterior replacement device 100 so that the positions of the fastening holes 21 of the loaded exterior material 20 are aligned with the positions of the bolts 42 in the vertical direction.

[0043] Next, the worker operates the input unit 152 to move the horizontal movement unit 172 forward. Then, the bolt 42 is inserted into the fastening hole 21, and the front surface of the exterior material 20 comes into contact with the rear surface of the bracket 41. Next, the worker operates the input unit 152 to actuate the attachment / detachment unit 173 and attach the nut 43 to the bolt 42. As a result, the exterior material 20 is fixed to the bracket 41 in the state shown in FIG. 13. Next, the worker operates the input unit 152 to slightly lower the exterior replacement device 100 and move the claw portion 171A away from the exterior material 20 in the vertical direction. Next, the worker operates the input unit 152 to move the horizontal movement unit 172 backward. Then, the claw portion 171A moves away from the exterior material 20 in the front-rear direction and is accommodated between the upper frame 111 and the lower frame 112 of the main body unit 110. Next, the worker operates the input unit 152 to raise the exterior replacement device 100 to the roof of the building 1.

[0044] The above is the method for replacing the exterior materials 20 attached to a certain portion of the exterior surface of the building 1. When replacing exterior materials 20 attached to another portion of the same row, the above S2 and S3 can be repeated to replace the exterior materials 20 in order. When replacing exterior materials 20 attached to a different row, in the above S1, a worker hoists the exterior replacement device 100 using a crane or the like, and moves the exterior replacement device 100 so that the rollers 162 are positioned inside another guide rail 30.

[0045] After replacing the exterior materials 20, the worker seals the gaps between adjacent exterior materials 20, the gaps between the exterior materials 20 and the columns 10, and the support holes 22 of the exterior materials 20 fixed to the brackets 41 with caulking material.

[0046] <Effects> The exterior replacement device 100 of this embodiment is used in a building 1 that is provided with guide rails 30 extending vertically, and comprises a main body unit 110 that is arranged opposite the outer surface of the building 1, and a lifting unit 120 that raises and lowers the main body unit 110. The main body unit 110 has a guide unit 160 that moves the main body unit 110 along the guide rails 30 and regulates the horizontal movement of the main body unit 110, and a replacement unit 170 that replaces the exterior material 20 of the building 1.

[0047] According to the exterior replacement device 100 described above, since the main body 110 has the replacement unit 170 that replaces the exterior material 20 of the building 1, a worker can replace the exterior material 20 without getting into the exterior replacement device 100. As a result, when performing the exterior material 20 replacement work in rainy weather, the worker's exposure to rain can be reduced. Therefore, the burden on the worker when replacing the exterior material 20 of the building 1 can be reduced.

[0048] In addition, by using the exterior exterior replacement device 100, there is no need to set up scaffolding around the building 1 when replacing the exterior material 20. Therefore, the construction period required for setting up and removing the scaffolding can be shortened. In addition, the cost required for setting up and removing the scaffolding can be reduced.

[0049] Furthermore, according to the above-described exterior replacement device 100, the guide unit 160 is provided so that the rollers 162 are disposed inside the guide rails 30, so that the horizontal movement of the main body unit 110 is restricted. Therefore, the main body unit 110 is less likely to swing during the replacement work of the exterior material 20, so that the replacement work of the exterior material 20 can be performed with the main body unit 110 in a stable state.

[0050] In addition, the replacement unit 170 of the exterior material replacement device 100 in this embodiment further has a support unit 171 that supports the exterior material 20, a horizontal movement unit 172 that moves the support unit 171 horizontally, and an attachment / detachment unit 173 that attaches and detaches nuts 43 that fix the exterior material 20 to the building 1.

[0051] According to the exterior replacement device 100 described above, the exterior material 20 is supported by the support parts 171, and is moved in the front-rear direction together with the support parts 171 by the horizontal movement parts 172. That is, the exterior material 20 is placed at a predetermined position on the building 1 by the support parts 171 and the horizontal movement parts 172. Furthermore, the nuts 43 that fix the exterior material 20 to the brackets 41 are attached to the bolts 42 by the attachment / detachment parts 173, and the exterior material 20 is fixed to the building 1. In these operations, because the horizontal movement of the main body part 110 is restricted, the transport of the exterior material 20 by the support parts 171 and the horizontal movement parts 172 can be performed in a stable state.

[0052] Moreover, the exterior replacement device 100 according to this embodiment further includes an image capturing unit 130 that captures an image of the working area of ​​the replacement unit 170 .

[0053] According to the exterior replacement device 100 described above, an operator can perform the replacement work of the exterior material 20 while checking the working area of ​​the replacement unit 170 by the photographing unit 130. Therefore, since the operator can easily check the working state of the replacement unit 170, the operator can easily replace the exterior material 20 using the exterior replacement device 100.

[0054] Moreover, the exterior replacement device 100 according to this embodiment further includes a control unit 140 that controls the operations of the lifting unit 120 and the replacement unit 170.

[0055] According to the above-described exterior replacement device 100, the operation of the lifting / lowering unit 120 and the replacement unit 170 is controlled by the control unit 140. Therefore, by preparing a program for controlling the operation of the lifting / lowering unit 120 and the replacement unit 170 in advance in the control unit 140, the replacement work of the exterior material 20 using the exterior replacement device 100 becomes easier.

[0056] Moreover, the exterior replacement device 100 according to this embodiment further includes a remote control unit 150 capable of communicating with the control unit 140.

[0057] According to the above-described exterior replacement device 100, by providing the remote control unit 150 capable of communicating with the control unit 140, an operator can operate the exterior replacement device 100 from a remote location. This further reduces the burden on the operator. [Explanation of symbols]

[0058] 1. Building 20…Exterior material 30…Guide rail 43...Nut (fixing member) 100…Exterior replacement device 110…Main body 120…Lifting section 130…Photography Department 140...Control unit 150…Remote control unit 160…Information Department 170…Exchange department 171...Support part 172…Horizontal moving part 173…Detachable part

Claims

1. An exterior replacement device for use in a building provided with a guide rail extending vertically, A main body portion disposed opposite to an outer surface of the building; A lifting unit that lifts and lowers the main body unit; Equipped with The main body includes a guide portion that moves the main body along the guide rail and restricts horizontal movement of the main body; A replacement unit that replaces the exterior material of the building; An exterior exchange device having the same.

2. The replacement part includes a support part that supports the exterior material, A horizontal movement unit that moves the support unit in a horizontal direction; A detachment unit that attaches and detaches a fixing member that fixes the exterior material to the building; The sheath exchange device of claim 1 further comprising:

3. The exterior replacement device according to claim 1 , further comprising a photographing unit that photographs a working area of ​​the replacement unit.

4. The exterior replacement device according to claim 1 , further comprising a control unit that controls operations of the lifting unit and the replacement unit.

5. The exterior replacement device according to claim 4 , further comprising a remote control unit capable of communicating with the control unit.

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