Window suspension tool and window mounting method

Abstract

To provide a window suspension tool capable of directly transmitting an operation force of a worker when mounting a fixed window in an opening of a wall panel, thereby enabling fine adjustment of an inclination angle of the fixed window.SOLUTION: A window suspension tool 10 comprises: a first arm part 26 extending from a suspension part 20; and a holding part 30 rotatably journaled on a tip part of the first arm part 26. The window suspension tool 10 includes a gear 50 provided on a bottom edge part of the suspension part 20, and a pinion 52 engaged with the gear 50. The pinion 52 is rotatably supported by a second arm part 60, and moves in a circumferential direction of the gear 50 by being rotated normally / reversely with manual operation. The pinion 52 is connected to the holding part 30 via the second arm part 60, and thus, by carrying out a rotary operation with respect to the pinion 52 through a first operation part 70, can tilt the second arm part 60 relative to the first arm part 26 and incline the fixed window 12 held by the holding part 30 at an arbitrary angle.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a window hanger and a method for installing a window. [Background technology]

[0002] When installing a window in an opening in a wall panel on the exterior wall of a building, the heavy window needs to be lifted and carried to the specified installation position. Since this work would require heavy physical labor if performed directly by a worker, it is preferable to hoist the window using a crane or similar device.

[0003] For example, Patent Document 1 describes a method of assembling a bay window sash in which a wall panel onto which the bay window sash is to be assembled is fixed to an assembly point of the wall panel, and before a roof panel is installed above the wall panel, the pre-assembled bay window sash is placed on a suspension rack and hoisted by a crane or the like to the assembly point and assembled. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 4-034192

[0005] There is a known type of fixed window in which a sheet of window glass is fitted and fixed in an opening in a wall panel. The fixed window is lifted to the height of the opening in the wall panel, and then one of the upper and lower ends is fitted into the opening while the entire window is tilted at an angle. Then, while returning the window to its original position, the other end is pushed into the wall surface to fit into the opening. If the window is pushed into the wall surface too strongly during this fitting process, excessive stress is applied to the sash of the fixed window, which may cause distortion.

[0006] Some electric hoisting tools attached to cranes use electric power from a motor or other power source to tilt the fixed window in any direction. However, such electric hoisting tools are designed to allow the hoist to be in any position during transportation, and it is difficult to finely adjust the angle. Therefore, in the fitting work, it is desirable to be able to directly transmit the operating force of the worker and finely adjust the tilt angle of the fixed window. Summary of the Invention [Problem to be solved by the invention]

[0007] In consideration of the above, the present invention aims to provide a window hanger and a window installation method that can directly transmit the operating force of the worker when installing a fixed window into an opening in a wall panel, and fine-tune the inclination angle of the fixed window. [Means for solving the problem]

[0008] The window hanger of the first aspect comprises a hanger attached to the tip of a crane, a first arm extending from the hanger, a holding part rotatably supported on the tip of the first arm and capable of holding the glass surface of a fixed window, a gear provided at the lower end of the hanger, a pinion that meshes with the gear and moves circumferentially of the gear as it rotates, a second arm rotatably supporting the pinion and connecting the pinion to the holding part, and a first operating part connected to the second arm and configured to manually operate the forward and reverse rotation of the pinion, and which tilts the second arm relative to the first arm by rotating the pinion, thereby tilting the fixed window held by the holding part to any angle.

[0009] The window hanger according to the first aspect has a first arm extending from a hanger and a holding part rotatably supported at a tip of the first arm. The holding part is capable of holding the glass surface of the fixed window. The window hanger also has a gear provided at a lower end of the hanger and a pinion meshed with the gear. The pinion is rotatably supported by the second arm, and rotates forward and backward by manual operation of the first operating part, and moves along the circumferential direction of the gear. Here, the pinion is connected to the holding part via the second arm. In this window hanger, by performing a rotation operation on the pinion through the first operating part, the second arm can be tilted relative to the first arm, and the fixed window held by the holding part can be tilted to any angle. As a result, when attaching a fixed window to an opening in a wall panel, the operating force of the worker to the first operating part can be directly transmitted to fine-tune the tilt angle of the fixed window.

[0010] The window hanger of the second aspect has the configuration described in the first aspect, wherein the second arm portions are arranged in a pair on both axial sides of the pinion, and the first arm portion is arranged inside the pair of second arm portions.

[0011] In the window hanger according to the second aspect, the second arm portions are arranged in a pair on both sides of the pinion in the axial direction, and the first arm portion is arranged inside the pair of second arm portions. Therefore, the pair of second arm portions are connected to the holding portion that holds the fixed window with the first arm portion at the center. This makes it possible to stabilize the tilting movement of the holding portion relative to the first arm portion, thereby improving workability.

[0012] The window hanging device of the third aspect has the configuration described in the first or second aspect, wherein the first operating part has an operating handle extending from the second arm part toward an operating position of an operator, and the operating handle can be set to a lock position that fixes the pinion and a release position that releases the fixation of the pinion by a rotational operation about an axis along the extension direction of the second arm part.

[0013] In the window hanger according to the third aspect, the first operating part has an operating handle extending from the second arm part toward the operating position of the operator, and the operating handle fixes the pinion in the locked position and releases the pinion in the released position. Thus, the operator can operate the rotation of the pinion after changing the operating handle from the locked position to the released position. Here, the operation of the operating handle is a rotation operation about an axis along the extension direction of the second arm part. Therefore, the second arm part is less likely to swing back and forth or left and right due to the operating force applied to the operating handle, and the load swing of the fixed window in the lifted state can be suppressed.

[0014] The window hanger of the fourth aspect has the configuration described in the first or second aspect, and further has a second operating part attached to the hanging part, and the second operating part has a first handle located on the right side of the hanging part and a second handle located on the left side of the hanging part when viewed from an operating position where the hanging part is located in front, and is capable of operating the movement of the hanging part in the front-rear and left-right directions while holding the first handle and the second handle, and the first operating part is located between the first handle and the second handle.

[0015] The window hanger according to the fourth aspect has a second operating part attached to the hanging part. The second operating part has a first operating handle and a second operating handle arranged on the left and right of the hanging part when viewed from an operating position where the hanging part is arranged in front. An operator can operate the movement of the hanging part in the front-rear and left-right directions while holding the first handle and the second handle. Here, the first operating part is arranged between the first handle and the second handle arranged on the left and right. This allows, for example, an operator to place one hand on the first handle or the second handle while operating the first operating part with his / her dominant hand. This makes it possible to effectively suppress the swinging of the hanging part and to increase safety.

[0016] The window hanger of the fifth aspect has the configuration described in the fourth aspect, wherein the first handle and the second handle include a vertical gripping portion extending along the vertical direction and a horizontal gripping portion extending along the horizontal direction.

[0017] In the window hanger according to the fifth aspect, each of the first and second handles has a vertical gripping portion extending vertically and a horizontal gripping portion extending horizontally, which allows the handles to grip a portion that is easy to apply operating force to in accordance with the movement direction of the hanger, resulting in excellent operability.

[0018] A window hanger according to a sixth aspect has the configuration described in the fourth aspect, and the holding portion comprises a vacuum pad that is adhered to the glass surface of a fixed window and a support frame that supports the vacuum pad, and the vacuum pad is configured to be able to adhere to the glass surface and hold the fixed window when the air pressure in the pad is made negative, and a controller that controls the air pressure in the pad and a meter unit that measures the air pressure in the pad are provided on at least one of the first handle and the second handle.

[0019] In the window hanger according to the sixth aspect, a controller that controls the air pressure in the pad and a meter unit that measures the air pressure in the pad are provided on at least one of the first handle and the second handle, on the left and right of the first operating unit. This allows the controller and meter unit to be located close to the worker's hands, reducing the amount of eye movement of the worker and improving operability.

[0020] A window installation method according to a seventh aspect is a method of installing a fixed window in an opening of a wall panel using the window hanger according to any one of the first to sixth aspects, and includes: a holding step of holding the fixed window via the holding part; a lifting step of lifting the lifting part with a crane after the holding step; a first fitting step of operating the first operating part so that the pinion rotates in the forward direction at a position facing the wall panel after the lifting step, and fitting one of the upper end and the lower end of the fixed window into the opening in a state in which the fixed window held by the holding part is tilted at an arbitrary angle; and a second fitting step of operating the first operating part so that the pinion rotates in the reverse direction after the first fitting step, and fitting the other of the upper end and the lower end of the fixed window into the opening.

[0021] In a window installation method according to a seventh aspect, after holding the fixed window, the hanging part is lifted by a crane. Then, the first operating part is operated so that the pinion rotates in the forward direction at a position facing the wall panel. This allows the fixed window held by the holding part to be inclined at an arbitrary angle, and one of the upper end and the lower end of the fixed window can be fitted into the opening. Then, the first operating part is operated so that the pinion rotates in the reverse direction, and the other of the upper end and the lower end of the fixed window is fitted into the opening, completing the installation of the fixed window. In this process, the configuration of the window hanger described above allows the operating force of the worker to be directly transmitted, allowing fine adjustment of the inclination angle of the fixed window. Effect of the Invention

[0022] As described above, according to the window hanger and window installation method of the present invention, when installing a fixed window in an opening in a wall panel, the operating force of the worker can be directly transmitted to fine-tune the inclination angle of the fixed window. [Brief description of the drawings]

[0023] [Figure 1] FIG. 1 is a perspective view of a window hanger according to an embodiment of the present invention. [Diagram 2]FIG. 2 is a partially enlarged side view of the window hanger according to the embodiment, showing the pinion in a locked state. [Diagram 3] FIG. 2 is a partially enlarged side view of the window hanger according to the embodiment, showing the pinion in a released state. [Figure 4] FIG. 1 is a front view showing a first operating part according to this embodiment, where (A) shows a state in which the operating lever is set to a fixed position, and (B) shows a state in which the operating lever is set to a release position. [Diagram 5] FIG. 4 is a perspective view showing a second operating section according to the embodiment. [Figure 6] 2 is a block diagram showing a configuration of a main part of a holding section according to the embodiment; FIG. [Figure 7] 5(A) to 5(F) are schematic diagrams showing the steps of the window mounting method according to the present embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] [First embodiment] The window hanger 10 according to this embodiment will be described below with reference to Figures 1 to 7. Note that the arrows FR, UP, and RH shown as appropriate in each figure indicate the front, upper, and right sides as viewed from the operating position P of the operator (worker) of the window hanger 10. Furthermore, when the directions of front / rear, up / down, and left / right are used in the following description unless otherwise specified, they refer to the front / rear, up / down, and left / right as viewed from the operating position P.

[0025] Fig. 1 is a perspective view of a window hanger 10. As shown in this figure, the window hanger 10 is used when a window member having a flat glass surface is hoisted and transported by a crane. In this embodiment, the transportation of a fixed window 12 will be described as an example. The fixed window 12 has a glass plate 14 constituting a transparent window member and a sash 16 supporting the glass plate 14, and is known as a window that is fitted and fixed into an opening in the outer wall of a building or the like.

[0026] The fixed window 12 is fitted with its upper end (or lower end) in an opening in an exterior wall or the like while being tilted as a whole, and then the lower end (or upper end) is pushed into the wall while returning the tilt, so that the whole is fitted in. If the pushing into the wall side is too strong in this fitting operation, excessive stress acts on the sash 16 of the fixed window 12, which may cause distortion.

[0027] In addition, there are electric lifting devices that are attached to cranes that use the electric power of a motor or other power source to tilt the lifted fixed window in any direction. However, such electric lifting devices are intended to allow the window to be in any position during transportation, and it is difficult to make fine angle adjustments.

[0028] For the above reasons, the fixed window 12 is usually lifted by a crane and transported to a specified installation position, and then multiple workers lift the fixed window 12 and fine-tune the inclination while fitting it into the opening. For this reason, installation of the fixed window 12 is often heavy labor performed by multiple workers, and is not an easy task.

[0029] In contrast, the window hanger 10 of this embodiment is characterized in that after the fixed window is transported to a predetermined mounting position, it can be attached to the opening of the wall panel while still in the lifted state.

[0030] (Hanging part) The window hanger 10 has a hanger 20 that is attached to the tip of a crane 18. The hanger 20 has a horizontal part 22 that extends forward when viewed from the operating position P, and a vertical part 24 that hangs down vertically from the rear end of the horizontal part 22.

[0031] A ring-shaped eyebolt 21 is fixed to the horizontal portion 22, and the eyebolt 21 enables connection to a hook 19 attached to the tip of the crane 18. The vertical portion 24 is disposed approximately in the center in the width direction (left-right direction) when viewed from the operating position P, and extends along the vertical direction (up-down direction).

[0032] (First arm part) The hanging portion 20 is connected to the holding portion 30 (described later) via a first arm portion 26 extending from the vertical portion 24. The first arm portion 26 extends substantially horizontally toward the front side from the lower end of the vertical portion 24, and its tip portion is pivotally supported by a second arm portion 60 (described later). Similar to the vertical portion 24, this first arm portion 26 is disposed approximately in the center in the width direction (left-right direction) when viewed from the operation position P.

[0033] (holding part) 1 and 2, the holding unit 30 includes a plurality of vacuum pads 32 (A-D) that are attached to the glass surface of the fixed window 12, and a support frame 34 that supports the plurality of vacuum pads 32 (A-D). The support frame 34 in this embodiment is rectangular, and has vacuum pads 32A-32D installed at each of the four corners. In addition, a tip of a second arm unit 60 (described later) is connected to the rear side of the support frame 34.

[0034] Each vacuum pad 32 is connected to a tube 36 that communicates with the inside of the pad and an ejector 38 that exhausts air from the tube 36. When the ejector 38 is operated with each vacuum pad 32 in contact with the glass surface of the fixed window 12, the air is exhausted, creating a negative pressure in the pad, and the vacuum pad 32 can be attached to the glass surface of the fixed window 12. The operation of the ejector 38 is controlled by a controller 40 operated by an operator. The air pressure in each of the four vacuum pads 32 is monitored by vacuum sensors 42 (A to D). The tubes 36 extending from the four vacuum pads join just before the ejector 38, and the air pressure at this joining point is also monitored by a vacuum sensor 42 (E). The detection values ​​of these five vacuum sensors 42 are displayed on a meter section 44.

[0035] (Gear and Pinion) Returning to Fig. 1, a gear 50 is provided at the lower end of the vertical portion 24. The gear 50 is fixed to the lower end of the vertical portion 24 in an orientation in which the left-right direction is the axial direction. Teeth 50A of the gear 50 are arranged in an arc shape protruding toward the rear operation position P in a side view along the left-right direction, and mesh with teeth 52A of a pinion 52 arranged on the rear side of the gear 50.

[0036] In this embodiment, as shown in Fig. 3 and Fig. 4, the gear 50 and the pinion 52 are covered with transparent cover bodies 54A, 54B. The cover bodies 54A, 54B are made of, for example, a resin molded product. Therefore, the meshing position of the gear 50 and the pinion 52 is visible from the operating position P of the operator.

[0037] (Second arm part) The pinion 52 is disposed in a position in which the left-right direction is the axial direction, and is rotatably supported by the second arm portion 60. The second arm portions 60 are disposed in a pair on both sides of the pinion 52 in the axial direction. The first arm portion 26 is disposed inside the pair of second arm portions 60. The pair of second arm portions 60 extend in the front-rear direction along the first arm portion 26, and the tip portions are formed in a bracket shape extending in the approximately vertical direction. The tip portions are fixed to span the upper and lower ends of the support frame 34 that supports the vacuum pad 32. A first rotating shaft 62 having an axial direction in the left-right direction is spanned between the tip portions of the pair of second arm portions 60, and the tip portion of the first arm portion 26 is rotatably supported around the axis of the first rotating shaft 62. As a result, the support frame 34 of the holder 30 is rotatably supported at the tip portion of the first arm portion 26 via the second arm portion 60 and the first rotating shaft 62.

[0038] Here, a second rotating shaft 64 having an axial direction in the left-right direction is spanned between the base ends of the pair of second arm portions 60. Inside the pair of second arm portions 60, a pinion 52 is supported rotatably around the axis of the second rotating shaft 64. As a result, the pinion 52 moves along the circumferential direction of the gear 50 as it rotates, tilting the second arm portion 60 relative to the first arm portion 26. As a result, the holding portion 30 connected to the tip end of the second arm portion 60 tilts in conjunction with the second arm portion 60, and the fixed window 12 held by the holding portion 30 can be tilted at any angle (see FIGS. 3 and 4).

[0039] (1st operation section) As shown in FIG. 5(A) and FIG. 5(B), the pinion 52 can be rotated in the forward and reverse directions manually via the first operating unit 70. The first operating unit 70 has a support bracket 72 attached to the base end of the second arm unit 60 and an operating handle 74 supported by the support bracket 72. The support bracket 72 is disposed on the side of the pinion 52. The operating handle 74 is formed in a rod shape extending from the base end of the second arm unit 60 toward the operating position P, and a lock piece 76 is provided at the tip end disposed opposite the teeth 52A of the pinion 52. In addition, the operating handle 74 has a grip 78 formed at the base end protruding rearward (toward the operating position P) to be held by the operator. The operator of the window hanger 10 can rotate the pinion 52 forward and reverse by standing at the operating position P, holding the grip 78 of the operating handle 74, and pushing down and pulling up the handle to move it up and down.

[0040] In addition, the operating handle 74 is supported by the support bracket 72, so that it can be rotated about an axis along the extension direction (front-rear direction) of the second arm portion 60. The operating handle 74 can be set to a locked position and an unlocked position by a predetermined rotation operation. When the operating handle 74 is set to the locked position, the lock piece 76 engages with the teeth 52A of the pinion 52, and the pinion 52 can be fixed in the engaged position (FIG. 5(A)). When the operating handle 74 is set to the unlocked position, the lock piece 76 is moved to a position where it does not overlap with the teeth 52A of the pinion 52, and the fixation of the pinion 52 can be released (FIG. 5(B)).

[0041] (2nd operation section) As shown in Fig. 6, the window hanger 10 has a second operating part 80 attached to the hanging part 20 described above. The second operating part 80 has a first handle 82 arranged on the right side of the vertical part 24 and a second handle 84 arranged on the left side of the vertical part 24 when viewed from an operating position P where the vertical part 24 of the hanging part 20 is arranged in front of the operator. The first handle 82 and the second handle 84 are connected in the left-right direction via a support arm part 86 attached to the middle part of the vertical part 24 via a bracket (reference number omitted). The operator of the window hanger 10 can push and pull the fixed window 12 to move it forward and backward, and can operate it laterally to move it left and right, while holding the first handle 82 and the second handle 84.

[0042] The first handle 82 and the second handle 84 are preferably disposed at a position higher than the height of the lower end of the hanging part 20 (i.e., the height of the gear 50, the pinion 52, and the first operating part 70). This improves visibility around the first operating part 70 when viewed from the operating position P, making it easier to adjust the inclination of the second arm part 60.

[0043] Furthermore, in this embodiment, a controller 40 for operating the ejector 38 is provided on a first handle 82 located on the right side of the hanging part 20. Also, a meter section 44 of the vacuum sensor 42 is provided on a second handle 84 located on the left side of the hanging part 20. This allows the operator to perform operations required for lifting, transporting, and installing the fixed window 12 with minimal eye movement while keeping his or her gaze directed forward from the operating position P.

[0044] Here, the first handle 82 and the second handle 84 have a vertical grip portion 90 extending vertically and a horizontal grip portion 92 extending horizontally. The vertical grip portion 90 can efficiently transmit the operating force of the operator in a push-pull operation to move the fixed window 12 in the front-rear direction. The horizontal grip portion 92 can efficiently transmit the operating force of the operator in a lateral operation to move the fixed window left-right. Therefore, the operator can select a grip portion that provides good operability depending on the moving direction of the fixed window, thereby reducing the burden on the operator during work.

[0045] Moreover, when viewed from the operating position P, the operating handle 74 of the first operating unit 70 is disposed between the first handle 82 and the second handle 84 of the second operating unit 80. With such an arrangement, both right-handed and left-handed operators can operate the operating handle 74 with their dominant hand while placing the other hand on the first handle 82 or the second handle 84 as an aid to perform work.

[0046] (Window installation instructions) Hereinafter, with reference to Fig. 7, a process of attaching a fixed window 12 to an opening 102 of a wall panel 100 using the window hanger 10 configured as described above will be described. As an example, the wall panel 100 is attached to the framework of a building unit in a factory. The window hanger 10 is used by attaching it to the tip of a crane 18 installed on the ceiling in the factory, and the fixed window 12 is lifted up to a predetermined height and transported to a predetermined installation position in the factory.

[0047] (holding process) First, at a predetermined position in the factory, the fixed window 12 placed on the pallet 106 is held by the window hanger 10. In this process, an operator operates the controller 40 to activate the ejector 38, and the vacuum pads 32 (A to D) are attached to the glass surface of the fixed window 12 (FIGS. 7(A) to 7(B)).

[0048] (Lifting process) After the holding process, the fixed window 12 is hoisted to a predetermined height by operating the crane 18 and transported to a position facing the wall panel 100 to which the fixed window 12 is scheduled to be assembled (Figures 7(C) to 7(D)).

[0049] (1st fitting process) After the lifting process, the first operating part 70 is operated to be pulled up so that the pinion 52 rotates in the forward direction at the position facing the wall panel 100, and the fixed window 12 held by the holding part 30 is tilted forward. In this state, the fixed window 12 is moved forward, and its upper end is fitted into the opening 102 of the wall panel 100 (FIG. 7(E)).

[0050] (Second fitting process) After the first fitting step, the first operating part 70 is operated to push down so that the pinion 52 rotates in the opposite direction to that of the first fitting step, and the lower end of the fixed window 12 is fitted into the opening 102 of the wall panel 100. At this time, the fixed window 12 is held in an upright position so that it is parallel to the wall surface, and is pushed into the wall surface side, so that the entire circumference of the sash 16 of the fixed window 12 fits into the opening 102. This completes the installation of the fixed window 12.

[0051] In the process described above, the operator can directly transmit the operating force of the first operating part 70 of the window hanger 10 by manually operating it, and finely adjust the inclination of the fixed window to any inclination angle. Therefore, it is possible to prevent excessive stress from acting on the sash of the fixed window.

[0052] In the above process, a method is described in which the upper end of the fixed window 12 is fitted into the opening and then the lower end is fitted, but this is not limited to the above, and the upper end may be fitted into the opening and then the lower end of the fixed window 12 is fitted into the opening.

[0053] (Action and Effects) As described above, the window hanger 10 according to this embodiment has the first arm portion 26 extending from the hanging portion 20 and the holding portion 30 rotatably supported at the tip of the first arm portion 26. The holding portion 30 is capable of holding the glass surface of the fixed window 12 (see FIG. 7). The window hanger 10 also has a gear 50 provided at the lower end of the hanging portion 20 and a pinion 52 meshed with the gear 50. The pinion 52 is rotatably supported by the second arm portion 60, and rotates forward and backward by manual operation of the first operating portion 70, moving along the circumferential direction of the gear 50. Here, the pinion 52 is connected to the holding portion 30 via the second arm portion 60.

[0054] In the window hanger 10 described above, by performing a rotation operation on the pinion 52 via the first operating unit 70, the second arm unit 60 can be tilted relative to the first arm unit 26, and the fixed window 12 held by the holding unit 30 can be tilted at any angle. This allows the operating force of the worker to be directly transmitted to the first operating unit 70 when attaching the fixed window 12 to the opening 102 of the wall panel 100, allowing fine adjustment of the tilt angle of the fixed window 12.

[0055] In this embodiment, the second arm portions 60 are arranged in a pair on both axial sides of the pinion 52, and the first arm portion 26 is arranged inside the pair of second arm portions 60. Therefore, the pair of second arm portions 60 are connected to the holding portion 30 that holds the fixed window 12, centering around the first arm portion 26. This makes it possible to stabilize the tilting of the holding portion 30 relative to the first arm portion 26, thereby improving workability.

[0056] In this embodiment, the first operating unit 70 has an operating handle 74 extending from the second arm unit 60 toward the operating position of the operator, and the operating handle 74 fixes the pinion 52 in the lock position shown in FIG. 5(A) and releases the pinion 52 in the release position shown in FIG. 5(B). Therefore, the operator can operate the rotation of the pinion 52 after changing the operating handle 74 from the lock position to the release position. Here, the operation of the operating handle 74 is a rotation operation around an axis along the extension direction of the second arm unit 60. Therefore, the second arm unit 60 is less likely to swing back and forth and left and right due to the operating force applied to the operating handle 74, and the load swing of the fixed window 12 in the lifted state can be suppressed.

[0057] In this embodiment, the second operating unit 80 is attached to the suspending unit 20. The second operating unit 80 has a first handle 82 and a second handle 84 arranged on the left and right of the suspending unit 20 when viewed from the operating position P where the suspending unit 20 is arranged in front. Therefore, the operator can operate the movement of the suspending unit 20 in the front-rear and left-right directions while holding the first handle 82 and the second handle 84. Here, the first operating unit 70 is arranged between the first handle 82 and the second handle 84 arranged on the left and right. This allows, for example, the operator to place one hand on the first handle 82 or the second handle 84 while operating the first operating unit 70 with the dominant hand. This allows the swinging of the suspending unit 20 to be effectively suppressed, thereby improving safety.

[0058] In this embodiment, each of the first handle 82 and the second handle 84 has a vertical gripping portion 90 extending vertically and a horizontal gripping portion 92 extending horizontally. This allows the gripping of a portion that is easy to apply operating force in accordance with the movement direction of the suspending part 20, resulting in excellent operability.

[0059] [supplementary explanation] Although the window hanger according to the present embodiment has been described above, the present invention is not limited to this. The configurations included in the above embodiment can be modified or combined without departing from the gist of the invention.

[0060] In addition, in the above embodiment, the process of attaching a fixed window to a wall panel assembled to a building unit has been described as an example, but it goes without saying that the present invention is not limited to buildings constructed using the unit construction method, but can also be applied to the construction of buildings constructed using traditional construction methods or steel frame construction methods. [Explanation of symbols]

[0061] 10 Window Hangers 12 Fixed Windows 18 Crane 20 Hanging part 26 First arm section 30 Holding part 32 Vacuum Pad 40 Controller 44 Meter section 50 Gear 52 Pinion 60 Second Arm Section 70 1st operation section 74 Operating handle 80 2nd operation section 82 1st handle 84 Second handle 90 Vertical grip 92 Horizontal grip part 100 wall panels 102 Opening P operation position

Claims

1. A lifting part attached to the tip of the crane; A first arm portion extending from the hanging portion; a holding portion rotatably supported on a tip end portion of the first arm portion and capable of holding a glass surface of a fixed window; A gear provided at a lower end of the hanging portion; a pinion that meshes with the gear and moves in a circumferential direction of the gear as the gear rotates; a second arm portion that rotatably supports the pinion and connects the pinion and the holding portion; a first operation unit connected to the second arm portion and configured to be capable of manually operating the forward and reverse rotation of the pinion, and tilting the second arm portion relative to the first arm portion by rotating the pinion, thereby tilting the fixed window held by the holding unit to an arbitrary angle; A window hanging device having the above structure.

2. The second arm portions are arranged in a pair on both sides in the axial direction of the pinion, and the first arm portion is arranged inside the pair of second arm portions.

2. The window hanger of claim 1.

3. the first operating portion has an operating handle extending from the second arm portion toward an operating position of an operator, The operating handle can be set to a lock position where the pinion is fixed and a release position where the fixation of the pinion is released by a rotation operation around an axis along an extension direction of the second arm portion.

3. A window hanger according to claim 1 or 2.

4. Further comprising a second operating part attached to the hanging part, The second operating part has a first handle arranged on the right side of the hanging part and a second handle arranged on the left side of the hanging part when viewed from an operating position where the hanging part is arranged in front, and is capable of operating the movement of the hanging part in the front-rear and left-right directions while holding the first handle and the second handle, The first operating part is disposed between the first handle and the second handle.

3. A window hanger according to claim 1 or 2.

5. The first handle and the second handle each have a vertical grip portion extending along a vertical direction and a horizontal grip portion extending along a horizontal direction.

5. The window hanger of claim 4.

6. the holding section includes a vacuum pad that is attached to the glass surface of the fixed window and a support frame that supports the vacuum pad, and the vacuum pad is configured to be attached to the glass surface and hold the fixed window by making the air pressure inside the vacuum pad negative; a controller for controlling the air pressure in the pad and a meter for measuring the air pressure in the pad are provided on at least one of the first handle and the second handle; 5. The window hanger of claim 4.

7. 13. A method of installing a fixed window in an opening in a wall panel using the window hanger of claim 1, comprising the steps of: a holding step of holding the fixed window via the holding portion; a lifting step of lifting the suspending portion by a crane after the holding step; a first fitting step of operating the first operating part so that the pinion rotates in a forward direction at a position facing the wall panel after the lifting step, and fitting one of the upper end portion and the lower end portion of the fixed window held by the holding part into the opening while tilting the fixed window held by the holding part at an arbitrary angle; a second fitting step of operating the first operating part so that the pinion rotates in a reverse direction after the first fitting step, and fitting the other of the upper end portion and the lower end portion of the fixed window into the opening portion; Including window installation instructions.

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