JP2005075552A - Elevator entrance device and its fitting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator entrance device capable of easily constructing a smoke cutout structure by utilizing the existing jamb of the entrance of an elevator and its fitting method. <P>SOLUTION: In this elevator entrance device, a floated structure 8 of U-shape in cross section is formed such that the lower side thereof in U-shape can be mounted on the upper surface of an upper frame 5 with the U-shape opening side facing a door 7A side. A door hanger 11 is fitted to the U-shaped upper side of the floated structure 8, and disposed upward apart from the upper surface of the upper frame 5. In addition, a tilted smoke cutout plate 14 is installed in close contact with the upper surface of the jamb 4 by utilizing a space formed by the floated structure 8. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an elevator doorway apparatus having a smoke shielding structure around a door and a method for attaching the elevator doorway apparatus.

In conventional elevator doorway devices, a smoke shielding shutter is installed at the landing, and the smoke shielding shutter is operated to cover the landing in the event of a fire. Diffusion was prevented. However, there is a problem that the cost for constructing the smoke shielding shutter is increased, the construction structure is restricted and the use of the landing space is hindered, and further, the aesthetic appearance is impaired.
In order to solve this problem, the frame that forms the upper and side edges of the elevator doorway, the sliding door that opens and closes the doorway, and the upper edge of the sliding door are arranged along the upper edge of the sliding door. Along the edge of the sliding door that is inclined toward the frame side of the sliding door closer to the door end of the sliding door and the edge of the frame facing the inclined smoke shielding plate. A contact plate that is in contact with the inclined smoke shield when the sliding door is fully closed, and is arranged along the side edge near the edge of the sliding door, and projects over the frame, and the frame when the sliding door is fully closed. A side edge smoke shield plate that is in contact with the outer edge of the sliding door facing the side edge portion of the sliding door, and when the door is fully closed, the contact between the inclined shield plate and the contact plate, and further the side edge smoke shield plate and the frame Smoke between the platform and the hoistway due to the gap between the frame and the sliding door being closed by contact with the side edge of the body Improved elevator doorway device for blocking the flow has been proposed (e.g., see Patent Document 1).

Japanese Patent No. 2715828

A conventional improved elevator entrance / exit device is configured on the assumption that it will be installed when an elevator is newly installed. In particular, in order to attach a contact plate, the part of the frame constituting the upper edge of the entrance / exit It had a special structure.
Therefore, when applying a conventional improved elevator doorway device to add a smoke shielding structure to the existing elevator doorway device, it is necessary to remove the existing frame body, removing and installing the frame body, Furthermore, there was a problem that wall repair work was performed, resulting in a significant increase in cost.

  It is an object of the present invention to obtain an elevator doorway apparatus and a method for attaching the same, which can easily construct a smoke shielding structure using the existing three-way frame at the doorway of the elevator.

  The present invention includes a three-way frame having an upper frame and a pair of vertical frames constituting an elevator entrance, a hanger case attached to the upper frame, a track extending in the horizontal direction on the hanger case, and a roller. A door hanger suspended from the truck so as to run freely on the track, and attached to a lower end of the door hanger, and moves horizontally along the elevation of the three-way frame to open the doorway. A door that opens and closes, a smoke shielding plate that is in close contact with the upper surface of the upper frame and is attached over the entire length direction of the upper frame, and an entire region of the door in the length direction that is in close contact with the upper surface of the door And a contact plate that is attached so as to extend to the upper frame side, and that contacts the smoke shielding plate when the door is fully closed to close the gap between the door and the upper frame. Elevator entrance / exit device The U-shaped floating structure is attached to the upper surface of the upper frame with the U-shaped opening side facing the door side, and the door hanger is U-shaped of the floating structure. It is attached to the upper side of the upper frame and spaced apart from the upper surface of the upper frame, and the smoke shield plate is in close contact with the upper surface of the three-way frame using the empty space formed by the floating structure. It is what is attached.

  According to the present invention, since the smoke shielding structure can be constructed using the existing three-way frame, it is possible to obtain an elevator entrance / exit device having a smoke shielding structure at a low cost by renovation work.

  Float the hanger case attached to the upper frame of the existing three-way frame to secure the installation space for the smoke shield plate on the upper surface of the upper frame, and install the smoke shield plate in this installation space to use the existing three-way frame The structure is realized.

Embodiment 1 FIG.
1 is a front view showing an elevator doorway apparatus according to Embodiment 1 of the present invention, FIG. 2 is a sectional view taken along the line II-II in FIG. 1, FIG. 3 is a sectional view taken along the line III-III in FIG. Is a sectional view taken along the line IV-IV in FIG. 1, and FIG. 5 is a sectional view taken along the line VV in FIG.

In each figure, 1 is an elevator hoistway, 2 is a platform provided with an entrance 3 that opens into the hoistway 1, and 4 is an upper frame 5 and a pair of vertical frames that constitute the upper edge and both side edges of the entrance 3 A three-way frame 6 and 7 are doors (sliding doors) for opening and closing the doorway 3.
Reference numeral 8 denotes a floating structure formed by forming a steel material into a U-shaped cross section. The U-shaped opening side is directed to the hoistway 1 side, and one side (lower side) of the U-shaped is the upper frame 5 of the three-way frame 4. Are fastened and fixed by bolts 20 and nuts 21. A hanger case 9 is fastened and fixed to the other side (upper side) of the U-shape of the floating structure 8 by bolts 22 and nuts 23, and is separated from the upper frame 5 above the entrance / exit 3 in the hoistway 1. Has been placed. The hanger case 9 is provided with a track 10 that extends in the horizontal direction along the elevational surface of the three-way frame 4. Reference numeral 11 denotes a door hanger. A roller 12 is attached to one end side so as to be rotatable around a horizontal axis, and the other end is fastened and fixed to the upper surface of the door 7 by a bolt 24 and a nut 25. The roller 12 is movably hung on the truck 10 and the door 7 is suspended from the truck 10 and is guided by the truck 10 so as to move in the horizontal direction. Thereby, as shown in FIGS. 3 to 5, the door 7 is arranged to face the three-way frame 4 with a gap D between the three-side frame 4 and along the three-way frame 4. The doorway 3 is opened and closed by moving in the opposite directions in the horizontal direction.

Reference numeral 14 denotes an inclined smoke shielding plate produced by forming a steel material into an L-shaped cross section. The inclined smoke shielding plate 14 has a length substantially the same as the length of the upper frame 5, the center is located on the door 7 side, and the both ends are inclined with respect to the opening / closing path of the door 7 so as to be separated from the door 7. The upper frame 5 is closely attached to the upper surface of the upper frame 5 so as to be positioned in an empty space formed by the floating structure 8.
Reference numeral 15 denotes a contact plate made of a thin steel plate that is easily elastically deformed. The contact plate 15 has substantially the same length as the width of the door 7 (length in the opening and closing direction), is interposed between the lower end of the door hanger 11 and the upper surface of the door 7, and is on the upper frame 5 side. The door hanger 11 and the door hanger 11 are fastened and fixed to the door 7 by bolts 24 and nuts 25. The contact plate 15 is inclined with respect to the opening / closing path of the door 7 so that the extension length of the door 7 on the door end side is short and the extension length of the door 7 on the door pocket end side is long. It is attached to the upper surface of the door 7. Thereby, when the door 7 is fully closed, the contact plate 15 is elastically deformed and comes into contact with the L-shaped standing piece of the inclined smoke shielding plate 14, and the gap D between the upper frame 5 and the door 7 is closed.

Reference numeral 16 denotes a fixing bracket which is manufactured by bending a steel plate into an L shape, and has a height substantially the same as the height of the door 7. One side of the L shape is a bolt 26 and a nut 27 on the door bag side end surface of the door 7. It is fastened and fixed by. Reference numeral 17 denotes a side edge smoke shielding plate made of a thin steel plate that is easily elastically deformed and having substantially the same height as the fixing bracket 16, and one end of the L-shaped other side of the fixing bracket 16 by a bolt 28 and a nut 29. The door 7 is arranged to be orthogonal to the opening / closing direction of the door 7. When the door 7 is fully closed, the side edge smoke shielding plate 17 is elastically deformed and comes into contact with the outer wall surface of the vertical frame 6 of the three-sided frame 4, and the gap D between the vertical frame 6 and the door 7 is closed. .
Reference numeral 18 denotes a lower smoke shield which is manufactured to have a length substantially the same as the width of the door 7 (length in the opening / closing direction) and is attached so as to extend downward from the lower end of the door 7. Is inserted into the groove of the sill 13 and contacts the bottom surface of the groove of the sill 13 to close the gap E between the sill 13 and the lower end of the door 7. Reference numeral 19 denotes a door leg attached to the lower end of the door 7, and the door leg 19 engages with a groove of the sill 13 to suppress swinging of the lower end side of the door 7 in the opening / closing operation of the door 7.

In the elevator doorway apparatus configured as described above, the roller 12 is guided by the truck 10 and travels, and the two doors 7 are opened and closed. When the door 7 is fully closed (when the two doors 7 are in contact with the door), the contact plate 15 is elastically deformed and contacts the L-shaped upright piece of the inclined smoke shielding plate 14. Then, the gap D between the upper frame 5 and the door 7 is closed. Further, the side edge smoke shielding plate 17 is elastically deformed and comes into contact with the outer wall surface of the vertical frame 6 of the three-way frame 4, and the gap D between the vertical frame 6 and the door 7 is closed. Further, the lower smoke shielding plate 18 is accommodated in the groove of the sill 13 and comes into contact with the bottom surface of the groove, and the gap E between the sill 13 and the lower end of the door 7 is closed.
This prevents smoke in the building from entering the hoistway 1 or outflowing from the hoistway 1 to the landing 2 and spreading to the building during a building fire.
In addition, since the floating structure 8 is fastened and fixed to the upper surface of the upper frame 5 of the three-way frame 4 with the U-shaped opening side facing the hoistway 1 side, the inclined smoke shielding plate 14 is fixed. Can be formed on the upper surface of the upper frame 5. Therefore, when a smoke shielding structure is attached to an existing elevator doorway device, the existing three-way frame 4 can be used. This eliminates the need for removing / installing the three-sided frame 4 and further repairing the wall accompanying the removal of the three-sided frame 4 and constructing a smoke shielding structure at low cost. Moreover, there is no restriction | limiting to a building structure, the space of the platform 2 can be used with a high degree of freedom, and also aesthetics are not spoiled.

Here, a method for attaching the smoke shielding structure will be described with reference to FIGS. 6 and 7.
First, as shown in FIG. 6 (a), the existing elevator doorway device has the hanger case 9 fastened and fixed to the upper surface of the upper frame 5 of the three-way frame 4 by bolts 20 and nuts 21, and the roller 12 is connected to the track. 10, the door 7 </ b> A is suspended from the truck 10.
Next, as shown in FIG. 6 (b), the bolt 24 is removed, and the fastening between the door 7A and the door hanger 11 is released. As shown in FIG. Carry to the platform 2 side. Then, the engagement between the roller 12 and the track 10 is released, the door hanger 11 is carried out from the doorway 3 to the landing 2 side, and the state shown in FIG.
Next, the connection between the hanger case 9 and the inner wall surface of the hoistway 1 is released, and the fastening between the hanger case 9 and the upper frame 5 by the bolt 20 is released. 7A, the floating structure 8 is fastened and fixed to the upper surface of the upper frame 5 with bolts 20 and nuts 21, and the hanger case 9 is floated with bolts 22 and nuts 23. Fasten and fix to. Next, although not shown, the hanger case 9 is connected and fixed to the inner wall surface of the hoistway 1. Thereafter, as shown in FIG. 7B, the inclined smoke shielding plate 14 is attached to the upper surface of the upper frame 5.

Next, as shown in FIG. 7C, the door hanger 11 is carried into the hoistway 1 from the doorway 3, the roller 12 is hung on the truck 10, and the door hanger 11 is suspended from the truck 10.
Next, the door 7 which is taller than the door 7 </ b> A by the height of the floating structure 8 is prepared. Then, the fixing bracket 16 and the side edge smoke shielding plate 17 are attached to the door bag side end surface of the door 7. A lower smoke shield 18 and a door leg 19 are attached to the lower end of the door 7. At this time, the lower smoke shield 18 and the door leg 19 may be attached in advance when the door 7 is shipped from the factory. Furthermore, the fixing bracket 16 and the side edge smoke shielding plate 17 may be attached in advance.

  Next, as shown in FIG. 7C, the door 7 to which the side edge smoke shielding plate 17 and the lower smoke shielding plate 18 are attached is carried into the hoistway 1 from the entrance 3. Then, the door hanger 11, the contact plate 15 and the door 7 are fastened and fixed by bolts 24, and the door 7 is suspended from the truck 10 as shown in FIG. Ends.

  Thus, according to the method for attaching the smoke shielding structure, by installing the floating structure 8, a space for installing the inclined smoke shielding plate 14 can be formed on the upper surface side of the upper frame 5. The inclined smoke shielding plate 14 can be attached using the frame 4. Therefore, it is possible to eliminate a great cost increase due to the removal of the three-way frame 4, and it is possible to construct a smoke shielding structure at a low cost and in a short construction period. In addition, waste materials such as landing surface finishes are reduced, making it environmentally friendly.

By installing the floating structure 8, the existing door 7 </ b> A is insufficient in height, and needs to be replaced with a new tall door 7. However, compared with the removal cost and replacement cost of the existing three-sided frame 4 and the wall repair cost, the replacement cost of the door 7 is remarkably low, and the effect of cost reduction by using the existing three-sided frame 4 is not impaired. Absent.
In the first embodiment, the inclined smoke shielding plate 14 is made of a steel material, but the material of the inclined smoke shielding plate 14 is not limited to a steel material, and may be a heat resistant material. For example, ceramics can be used.
In the first embodiment, the contact plate 15 is made of a thin steel plate. However, the material of the contact plate 15 is not limited to the thin steel plate, and may be any heat-resistant material having elasticity. For example, a glass fiber formed into a thin plate shape can be used.
In the first embodiment, the door 7A is removed from the door hanger 11 and carried out from the doorway 3 to the landing 2 side. However, the door 7A and the door hanger 11 are carried out together to the landing 2 side, and at the landing 2 The door 7A may be removed from the door hanger 11. In addition, the door hanger 11, the contact plate 15 and the door 7 are fastened and integrated in the hoistway 1, but the door hanger 11, the contact plate 15 and the door 7 are fastened and integrated at the landing 2, and then lifted and lowered. It may be carried into the road 1 and suspended from the truck 10.

Embodiment 2. FIG.
FIG. 8 is an enlarged cross-sectional view of the main part showing the periphery of the upper frame in the elevator doorway apparatus according to Embodiment 2 of the present invention.
In FIG. 8, a smoke shielding material 30 made of a non-combustible elastic material such as glass fiber, in which glass wool is wound with glass cloth, extends over the entire lengthwise direction of the inclined smoke shielding plate 14 on the upright piece of the inclined smoke shielding plate 14. Attached.
Other configurations are the same as those in the first embodiment.

  In the second embodiment, when the door 7 is fully closed, the smoke shielding material 30 is sandwiched between the elastically deformed contact plate 15 and the upright piece of the inclined smoke shielding plate 14, and the upper frame 5 and the door 7 are The gap D is closed. Therefore, the intrusion of smoke into the hoistway 1 and the outflow of smoke from the hoistway 1 to the landing 2 are prevented.

As described above, also in the second embodiment, the smoke shielding structure can be constructed using the existing three-way frame 4, and the same effect as in the first embodiment can be obtained.
Moreover, since the smoke shielding material 30 is pressed by the elastic deformation force of the contact plate 15 when the door 7 is fully closed, the airtightness when fully closed is improved.

Embodiment 3 FIG.
FIG. 9 is an enlarged cross-sectional view of the main part showing the periphery of the upper frame in the elevator doorway apparatus according to Embodiment 3 of the present invention.
In FIG. 9, the door hanger 11 </ b> A is made longer than the door hanger 11 used in the first embodiment by the height of the floating structure 8, and its lower end is fastened to the upper surface of the door 7 </ b> A by a bolt 24. It is fixed. The contact plate 15A is manufactured by bending a thin steel plate that is easily elastically deformed into a J-shaped cross section. This contact plate 15A has substantially the same length as the width (length in the opening and closing direction) of the door 7A, with the J-shaped folded portion up and the lower end in close contact with the upper surface of the door 7A. It is fixed. The contact plate 15A is inclined with respect to the opening / closing path of the door 7 so that the extension length of the door 7A on the door end side is short and the extension length of the door 7 on the door bag end side is long. ing. As a result, when the door 7A is fully closed, the J-shaped folded tip of the contact plate 15A is elastically deformed to come into contact with the L-shaped upright piece of the inclined smoke shielding plate 14 and the gap between the upper frame 5 and the door 7A. D is occluded.
Other configurations are the same as those in the first embodiment.

  In this third embodiment, when the door 7A is fully closed, the J-shaped folded tip of the contact plate 15A is elastically deformed to come into contact with the upright piece of the inclined smoke shielding plate 14, and the gap D between the upper frame 5 and the door 7A Is blocked. Therefore, the intrusion of smoke into the hoistway 1 and the outflow of smoke from the hoistway 1 to the landing 2 are prevented.

As described above, also in the third embodiment, the smoke shielding structure can be constructed by using the existing three-way frame 4, and the same effect as in the first embodiment can be obtained.
Moreover, since the door hanger 11A having a length corresponding to the height of the floating structure 8 is used, the existing door 7A can be used together with the existing three-way frame 4. And since an expensive door can be utilized compared with a door hanger, the further cost reduction is achieved.

Further, the method of attaching the smoke shielding structure is the same as that of the first embodiment except that the door hanger 11 is replaced with the door hanger 11A after the door 7A is carried out to the landing 2, and the contact plate 15A is attached. To be done.
Therefore, the door hanger 11A and the contact plate 15A are attached at the landing 2, so that the workability is not deteriorated as compared with the first embodiment.

Embodiment 4 FIG.
FIG. 10 is an enlarged sectional view of a main part showing the periphery of the upper frame in the elevator doorway apparatus according to Embodiment 4 of the present invention.
In FIG. 10, a height adjustment structure 31 produced by forming a steel material in a U-shaped cross section is fastened and fixed to the upper surface of the door 7 </ b> A by bolts 24, and the door hanger 11 </ b> B is adjusted in height by bolts 32 and nuts 33. It is fastened and fixed to the structure 31. Moreover, the door hanger 11B and the height adjustment structure 31 are produced in the shape (dimension) which adjusts the fluctuation | variation of the height direction of the existing door 7A and the three-way frame 4 which arises by arrange | positioning the floating structure 8. FIG. Yes. Further, the contact plate 15A is fixed to the height adjusting structure 31 with the J-shaped folded portion facing up and the lower end in close contact with the upper surface of the door 7A. The contact plate 15A is inclined with respect to the opening / closing path of the door 7 so that the extension length of the door 7A on the door end side is short and the extension length of the door 7 on the door bag end side is long. ing. As a result, when the door 7A is fully closed, the J-shaped folded tip of the contact plate 15A is elastically deformed to come into contact with the L-shaped upright piece of the inclined smoke shielding plate 14 and the gap between the upper frame 5 and the door 7A. D is occluded.
Other configurations are the same as those in the first embodiment.

  In this Embodiment 4, since the height adjustment structure 31 is attached, there is no height fluctuation | variation of the door 7A accompanying installation of the floating structure 8. FIG. Therefore, a smoke shielding structure can be constructed using the existing door 7A. When the door 7A is fully closed, the J-shaped folded tip of the contact plate 15A is elastically deformed to come into contact with the upright piece of the inclined smoke shielding plate 14, and the gap D between the upper frame 5 and the door 7A is closed. Thereby, the invasion of smoke into the hoistway 1 and the outflow of smoke from the hoistway 1 to the landing 2 are prevented.

As described above, also in the fourth embodiment, the smoke shielding structure can be constructed using the existing three-way frame 4, and the same effect as in the first embodiment can be obtained.
Moreover, since the door hanger 11B and the height adjustment structure 31 are used, even if the floating structure 8 is installed, the existing door 7A can be used together with the existing three-way frame 4, and the cost can be reduced. Figured.

Further, the smoke shielding structure is attached by removing the door hanger 11 after carrying the door 7A to the landing 2, attaching the height adjusting structure 31 and the door hanger 11B to the door 7A, and attaching the contact plate 15A. Except for the above, the same operation as in the first embodiment is performed.
Therefore, the door hanger 11B, the height adjustment structure 31 and the contact plate 15A are attached at the landing 2, so that the workability is not deteriorated as compared with the first embodiment.
In here, if match the height of the height adjusting structure 31 of float height structure 8 is that it goes without saying that it is possible to use existing door hanger 11.

In addition, although each said embodiment demonstrated the elevator doorway apparatus which has a door which opens both, even if it applies this invention to the doorway apparatus which has a door which opens one side, the same effect is acquired.
Moreover, although each said embodiment demonstrated the elevator doorway apparatus by the side of a landing, even if it applies this invention to the doorway apparatus by the side of a car, the same effect is acquired.

It is a front view which shows the elevator doorway apparatus which concerns on Embodiment 1 of this invention. It is II-II arrow sectional drawing of FIG. FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 1. FIG. 4 is a cross-sectional view taken along arrow IV-IV in FIG. 1. It is a VV arrow sectional view of Drawing 1. It is process sectional drawing explaining the attachment process of the smoke shielding structure in the elevator doorway apparatus which concerns on Embodiment 1 of this invention. It is process sectional drawing explaining the attachment process of the smoke shielding structure in the elevator doorway apparatus which concerns on Embodiment 1 of this invention. It is a principal part expanded sectional view which shows the surroundings of the upper frame in the elevator doorway apparatus which concerns on Embodiment 2 of this invention. It is a principal part expanded sectional view which shows the upper frame periphery in the elevator doorway apparatus which concerns on Embodiment 3 of this invention. It is a principal part expanded sectional view which shows the upper frame periphery in the elevator doorway apparatus which concerns on Embodiment 4 of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Hoistway, 2 platform, 3 entrances, 4 three-way frame, 5 upper frame, 7, 7A door, 8 floating structure, 9 hanger case, 10 truck, 11, 11A, 11B door hanger, 12 roller, 14 inclined smoke shielding Plate, 15, 15A Contact plate, 31 Height adjustment structure.

Claims (5)

A three-way frame having an upper frame constituting a doorway of the elevator and a pair of vertical frames, a hanger case attached to the upper frame, a track extending horizontally in the hanger case, and a roller, A door hanger hung by hanging a roller on the track, and a door attached to the lower end of the door hanger and moving horizontally along the elevation of the three-way frame to open and close the doorway The smoke barrier plate attached to the upper surface of the upper frame in close contact with the upper surface of the upper frame and the upper surface of the door closely attached to the upper surface of the upper frame. And an elevator door provided with a contact plate that is attached so as to extend to the upper frame side and that contacts the smoke shield plate and closes the gap between the door and the upper frame when the door is fully closed. In the device
A floating structure with a U-shaped cross-section is attached to the upper surface of the upper frame with the U-shaped opening side facing the door side, and the door hanger is mounted on the floating structure. The upper surface of the three-sided frame is attached to the upper side of the upper frame and is spaced apart from the upper surface of the upper frame, and the smoke shield plate uses the empty space formed by the floating structure. Elevator doorway device, characterized in that it is closely attached to the doorway.   The door hanger is directly attached to the upper surface of the door, and the height dimension of the door is configured to absorb a height increase of the truck by the floating structure. Item 2. The elevator doorway apparatus according to Item 1.   The elevator doorway apparatus according to claim 1, wherein the door hanger is configured to absorb a height increase of the truck by the floating structure, and is directly attached to the upper surface of the door. .   2. The elevator doorway apparatus according to claim 1, wherein a height adjusting structure that absorbs the height increase of the truck by the floating structure is interposed between the door hanger and the door. . A method for attaching the elevator doorway apparatus according to claim 1,
Removing the door from the door hanger and carrying it out from the doorway to the landing;
Removing the roller from the truck, and carrying the door hanger together with the door hanger to the landing;
The hanger case is removed from the upper frame, the floating structure having a U-shaped cross section is attached to the upper surface of the upper frame with the U-shaped opening facing the hoistway side, and then the hanger case removed is the floating structure. Attaching to the
Attaching the smoke shield plate in close contact with the upper surface of the upper frame using an empty space formed by the floating structure;
Carrying the roller and the door hanger from the doorway into the hoistway, hanging the roller on the track, and hanging the door hanger;
A method of attaching an elevator doorway device comprising: bringing the door into the hoistway; attaching the door to the lower end of the door hanger; attaching the door; and hanging the door.

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