KR100617383B1 - Machine-room-less elevator device - Google Patents

Abstract

The elevator apparatus according to the present invention includes a car 3 that moves up and down along the car rail 4 provided in the hoistway 1, and a counterweight 6 that moves up and down along the counterweight rail 7 provided in the hoistway 1. And a hoisting machine (9) having a pulley (10) and a motor portion (11) for driving the pulley (10), arranged at an upper portion of the hoistway (1) so that the rotating surface of the pulley (10) is horizontal. The first and second diverting pulleys 13 and 14 disposed on the upper part of 1), the car 3 is connected to one end, and the counterweight 6 is connected to the other end, so that the first and second turning directions are connected. The main rope 8 is wound around the pulleys 13 and 14 and the pulley 10 to suspend the car 3 and the counterweight 6.

Hoistway, car, counterweight, pulley, motor

Description

Inorganic Room Elevator Device {MACHINE-ROOM-LESS ELEVATOR DEVICE}

1 is a longitudinal sectional view of an elevator apparatus to which the present invention is applied.

FIG. 2 is a cross sectional view of an elevator apparatus to which the present invention is applied and FIG.

3 is a cross-sectional view of the winding machine assembly in section III-III of FIG.

FIG. 4 is a view showing the vicinity of the hoist in the IV-IV cross-sectional view of FIG. 2, showing the mounting structure of the hoist.

5 is a view showing the installation method of the rope between the pulley and the first and second turning pulley of the elevator apparatus to which the present invention is applied, (a) is a view from the top of the hoistway, (b) is in the horizontal direction This is the figure.

6 is a longitudinal cross-sectional view of the elevator apparatus to which the present invention is applied, and a VI-VI cross-sectional view in FIG. 7.

Fig. 7 is a cross sectional view of an elevator apparatus to which the present invention is applied, and Fig. 6 is a sectional view taken along line VII-VII in Fig. 6.

It is a figure which shows the vicinity of the hoisting machine in the VIII-VIII cross-sectional view of FIG. 7, and shows the installation structure of the hoisting machine.

9 is a longitudinal cross-sectional view of the elevator apparatus to which the present invention is applied, and is a VIII-VIII cross-sectional view in FIG. 10.

FIG. 10 is a cross sectional view of an elevator apparatus to which the present invention is applied, and FIG.

11 is an overall configuration diagram of a conventional elevator apparatus.

It is sectional drawing which shows the upper part of the hoistway of the conventional elevator apparatus in FIG.

<Explanation of symbols for main parts in drawing>

1. hoistway, 2. hoistway walls,

3. car, 4. car rail,

5. car frames, 6. counterweight,

7. counterweight, 8. main rope,

9. hoisting machine, 10. sheave,

11.motor, 12.brake,

13. The first diverting pulley, 14. The second diverting pulley,

15. Hoist assembly, 16. Flat top plate,

17. edge portion, 18. hoisting aid,

19. Brake check opening, 20. Pleat angle,

21. first opening, 22. second opening,

23. Hatch Gate, 24. Top floor entrance floor.

The present invention relates to an inorganic chamber elevator apparatus without a machine room.

11 is an inorganic chamber elevator apparatus, which is shown in Japanese Patent Laid-Open No. 10-139321. In the drawing, 1 has a hoistway, 3 has two undercarriage pulleys 26 on the bottom, and are suspended by the main rope 8 via the undercarriage pulley 26 and guided by the rail 4 while the hoistway is guided. (1) The car, 6, which elevates the inside, has an equilibrium pulley pulley 27 at the upper part and is suspended by the main rope 8 via the counterweight pulley pulley, and is guided by the counterweight rail 7 while the hoistway 1 9) The counterweight, which elevates the inside, is composed of a pulley 10 winding the main rope 8 and a motor unit 11 driving the pulley 10 so that the rotating surface of the pulley 10 becomes horizontal and the pulley ( A hoist disposed above the hoistway 1 such that 10 is lower than the motor unit 11, 13 is a first turning pulley disposed above the hoistway 1, and 14 is arranged above the hoistway 1. One second diverting pulley.

In addition, the main rope 8 has one end at the first fixed point 28 and the other end at the second fixed point 29. The main rope 8 includes a counterweight pulley 27 attached to the counterweight 6 at the first fixed point 28, a first diverting pulley 13 disposed on the hoistway 1, and a hoisting machine. The second way through the pulley 10 of (9), the second turning pulley 14 disposed above the hoistway 1, and the undercarriage pulley 26 arranged on the front surface of the car 3, in order. It was configured to reach a fixed point 29.

12 is a cross-sectional view showing an upper portion of the hoistway 1 of the conventional elevator apparatus in FIG. In the figure, the frame 31 which always connected to the pivot arm 30 and arrange | positioned the hoist 9 is shown. The pivot arm 30 is rotatable at the position indicated by the broken line by the pivot axis 32. Therefore, the conventional elevator apparatus is advantageous in that attachment, maintenance, and repair work of the hoisting machine 9 can be performed easily.

However, since the conventional elevator device is composed of 2: 1 roping, two undercarriage carriages 26 are arranged on the bottom surface of the car 3, and the counterweight pulleys 27 are placed on the counterweight 6; It was necessary to arrange | position, and the structure became complicated and the flexibility of the layout in a hoistway was impaired.

Moreover, when the hoisting machine 9, the 1st turning pulley 13, and the 2nd turning pulley 14 are arrange | positioned in the upper part of the hoistway 1 like the conventional elevator apparatus, the width | variety of the height direction of the hoistway 1 will be The sum of the thickness of the hoist 9 and the diameter of the first diverting pulley 13 or the second diverting pulley 14 increases the size of the gap in the upper part of the hoistway 1 above the car 3. .

Moreover, when performing repair or inspection of the hoisting machine 9, it is necessary to rotate the pivot arm 30, and it was not easy to perform maintenance or inspection.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an elevator apparatus which can achieve space saving in a hoistway and can easily perform maintenance inspection.

An elevator apparatus according to the present invention includes a car that elevates along a car rail provided in an hoistway, a counterweight that moves up and down along a counterweight rail provided in the hoistway, a pulley, a motor part that drives the pulley, and a brake part that controls the motor part. And a hoisting means disposed on an upper end of the hoistway, and a suspension means wound on the pulley to suspend the car and the counterweight, which is fixed to an upper end of the hoistway and includes a hoisting assembly for mounting the hoisting machine. .
Here, the hoist may be arranged such that the pulley is positioned above the hoist assembly.
In addition, the hoisting assembly may be supported by the carrail or the counterweight rail.
In addition, the hoisting assembly may be supported by a wall of the hoistway.
In addition, the hoist may be disposed at a corner in the plan view of the hoistway.
In addition, the hoist may be arranged to extend from the vertical projection surface of the car at the same time as the corner in the plan view of the hoistway.

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Next, an Example is demonstrated about this invention as follows.

Embodiment 1.

First, the elevator apparatus to which this invention is applied is demonstrated using FIG.

In Fig. 1, 1 is a hoistway, 2 is a hoistway wall, 3 is a car that is guided by the car rail 4 and lifts in the hoistway 1, 5 is a car frame constituting the periphery of the car 3, 6 Is a counterweight that is guided by the counterweight rail (7) to elevate in the hoistway (1), 8 is the main rope suspending the car (3) and counterweight (6), 9 is a pulley that winds the main rope (8) And the motor unit 11 driving the pulley 10 so that the rotational surface of the pulley 10 is horizontal and the pulley 10 is above the motor portion 11 so that the upper portion of the hoistway 1 is elevated. It is a hoisting machine arrange | positioned at the inside, and the brake part 12 is provided in the motor part 11 inside. Therefore, the brake part 12 is provided also like the motor part 11 so that it may face downward.

13 is a first diverting pulley disposed on an upper part of the hoistway 1, 14 is a second diverting pulley disposed on an upper part of the hoistway 1, and 15 is a planar substrate 16 as a bottom face and a side of both ends thereof. It is composed of an edge portion 17 formed in a shape and supported by the car rail 4 and the counterweight rail 7, and the hoisting machine 9, the first turning pulley 13 and the second turning pulley ( 4) A hoisting assembly for attaching, 18 is a hoisting supporter positioned to be parallel to the edge portion 17 of the hoisting assembly 15 at a corner on the surface of the substrate 16, 19 is a hoisting aid in the substrate 16; It is a brake part inspection opening of the hoist provided opening in the area | region between the support stand 18 and the edge part 17 of the hoist assembly 15. As shown in FIG.

21 is a first opening that is opened to the substrate 16, 22 is a second opening that is opened to the substrate 16, 23 is a lifting gate, and 24 is a top floor porch.

The main rope 8 is fixed at its one end at the point at which the car frame 5 is at the center position of the car 3 in the hoist plan view, and the other end of the counterweight at the hoist plan view at the top of the counterweight 6. It is fixed to the point which becomes the substantially center position of (6). The main rope 8 ascends vertically at a fixed point with the car frame 5, changes to the horizontal direction via the first turning pulley 13, and is returned from the hoisting machine 9 pulley 10. It switches vertically downward via the two-direction pulley 14 to reach a fixed point with the counterweight 6.

The hoisting machine 9 is installed to span the edge portion 17 of the hoisting assembly 15 and the hoisting auxiliary support 18 so that the brake check hole 19 is provided on the vertical projection surface of the hoisting machine 9 with respect to the substrate 16. It is supposed to be located. The hoisting machine 9 is provided such that the rotational surface of the pulley 10 is horizontal and the pulley 10 faces the ceiling side of the hoistway 1 so that the motor portion 11 and the brake portion 12 face downward. The hoisting machine 9 is arranged at the corner on the lifting gate 23 side in the floor plan of the hoistway 1.

In addition, the hoist 9 has a thin configuration in the direction of the rotation axis. So-called thin winding machine. The thin hoisting machine refers to a hoisting machine whose thickness in the rotation axis direction is thinner than the thickness in the rotation axis direction and the vertical direction, or a thin hoisting machine that can be accommodated in the gap between the car 3 in the uppermost position and the entire surface of the hoistway 1. have. The thin winding machine is introduced as an example in Japanese Patent Laid-Open No. 12-289954, and a detailed description thereof will be omitted.

3, in the height direction of the hoistway 1, the height of the hoist 9 in the height (height A in the figure) of the 1st direction turning pulley 13 and the 2nd direction turning pulley 14 is shown. Most of the height B in the middle is arranged to be accommodated. That is, by arranging the hoisting machine 9 on the upper side, the motor part of the hoisting machine 9 is arrange | positioned in the height A of the 1st diverting pulley 13 and the 2nd diverting pulley 14, and the 1st diverting pulley 13 is carried out. And the height of the height A of the second diverting pulley 14 and the height B of the hoist 9 are minimized.

In addition, in the height direction of the hoistway 1, the height of the hoisting assembly 15 (the height C in the figure) is the height of the device mounted directly on the hoisting assembly 15, that is, the first direction switching pulley 13 and It is accommodated in the height (height A in the middle) of the 2nd turning pulley 14.

The counterweight 6 is arranged to move up and down along the hoistway wall 2 on the side opposite to the hoisting door 23. That is, the elevator apparatus of this embodiment arrange | positions the counterweight 6 on the side facing the lifting gate 23. As shown in FIG. That is, the "balance counter drop method" is shown.

The first diverting pulley 13 is rotatably supported by two opposing side surfaces of the first opening 21, and part of the first diverting pulley 13 protrudes below the substrate 16. have. Similarly, part of the second diverting pulley 14 protrudes below the substrate 16.

Next, the maintenance and inspection of the hoist will be described in detail, and FIG. 4 is used for description.

As described above, the hoist 9 is installed to span the edge portion 17 of the hoist assembly 15 and the hoisting auxiliary support 18 so that the brake unit check hole is provided on the vertical projection surface of the hoist 9 on the surface of the substrate 16. (19) is located.

Moreover, the hoist 9 is provided so that the motor part 11 and the brake part 12 may face downward. Therefore, the motor part 11 and the brake part 12 can be visually inspected from the direction of the arrow D shown in FIG. 4, and the maintenance work can be performed from the direction of the arrow D. FIG.

Next, a method of installing the rope between the main rope 8 and the first diverting pulley 13 will be described in detail, and FIG. 5 will be used for description. In general, a plurality of main ropes 8 are used, so that a rope is formed between the pulley 10 of the first turning pulley 13 and the hoisting machine 9 as the first turning pulley 13 or pulley 10 as a tile. It is wound with an angle of a pleat angle 20 for each rope groove in. If the pleat angle 20 is large, the side of the rope groove and the main rope 8 are in strong contact, and the life of the main rope 8 is shortened. Therefore, in order to reduce the pleat angle 20, the first turning pulley 13 and the pulley 10 may be spaced apart as much as possible.

Therefore, in the present Example, the hoisting machine 9 is arrange | positioned at the corner of the elevation door 23 side in the top view of the hoistway 1. As shown in FIG. Moreover, the counterweight 6 is arrange | positioned at the side facing the lifting gate 23 side, and the distance between the hoisting machine 9 and the 2nd direction switching pulley 14 is provided in the largest size.

In addition, since the relationship between the 2nd turning pulley 14 and the pulley 10 is the same as the relationship between the 1st turning pulley 13 and the pulley 10, description is abbreviate | omitted.

 In the above elevator device, since it is composed of 1: 1 roping, two undercarriage pulleys 26 and counterweight pulleys 27 of the counterweight 6 are unsuitable on the bottom of the car 3, and thus the score of parts is reduced. Can be reduced and the configuration can be simplified. Therefore, the flexibility of the layout in the hoistway can be improved.

Moreover, since it is comprised by 1: 1 roping, the length of the main rope 8 can be shortened and cost reduction can be achieved.

In addition, the hoisting machine 9 is installed so that the pulley 10 is located above the motor portion 11 and the brake portion 12, so that the first direction change pulley 13 and the second direction change in the height direction of the hoistway 1. Most of the height of the hoist 9 can be accommodated within the height of the pulley 14. Therefore, the overhead dimension (OH size in FIG. 1) can be made small and the space saving of the hoistway 1 can be achieved.

Moreover, since the rotating surface of the pulley 10 of the hoisting machine 9 is horizontal, the overhead dimension (OH size in FIG. 1) can be made small, and space saving of the hoistway 1 can be achieved.

In addition, since the thin winding machine having the thin structure of the hoisting machine 9 can reduce the overhead dimension (OH size in FIG. 1), the space saving of the hoistway 1 can be achieved.

The hoisting machine 9 is provided so that the motor part 11 and the brake part 12 face downward, and the brake part check opening 19 is provided on the vertical projection surface of the hoisting machine 9 so that the hoisting machine 9 can be easily installed. Maintenance work and inspection work can be done.

Moreover, since the board | substrate 16 is supported by the car rail 4 or the counterweight rail 7, it is not necessary to provide the member which supports the board | substrate 16 separately, and it can reduce cost.

Moreover, since the board | substrate 16 is supported by the wall of the hoistway 1, it is not necessary to provide the member which supports the separate board 16, and can reduce cost.

Moreover, since the hoist 9 is arrange | positioned at the corner of the elevation door 23 side in the top view of the hoistway 1, the 1st direction turning pulley 13 and the 2nd direction turning pulley 14, and the pulley 10 are located. Since the space | interval can be installed as much as possible, the pleat angle 20 can be enlarged. Therefore, the life of the main rope 8 can be extended.

Further, the hoist 9 is arranged to extend from the vertical projection surface of the car 3 in the plan view of the hoistway 1, so that the first diverting pulley 13 and the second diverting pulley 14 and the pulley 10 are arranged. Since the space | interval with a maximum can be provided, the pleat angle 20 can be enlarged. Therefore, the life of the main rope can be extended.

Embodiment 2.

The elevator apparatus in another Example to which this invention is applied is demonstrated using FIG. In addition, in the present Example, the same code | symbol as Embodiment 1 shows the same or an equivalent part.

In each figure, 15 is comprised of the board | substrate 16 of a planar surface as a bottom surface, the edge part 17 of which both sides were formed in the "c" shape, and the hoisting aid part 25 which protruded from the long side of one side, and the both sides of the short side. It is supported on the hoistway wall 2, and is a hoisting assembly for coupling the first diverting pulley 13 to the substrate 16. Both ends of the hoisting machine 5 are fixed on the side opposite to the installation side of the lifting gate 23 of the hoistway wall 2 and the installation side of the hoisting gate 23.

18 is a hoisting auxiliary support fixed to the hoistway wall 2 so as to be parallel to the edge portion 17 of the hoisting assembly 15 on the hoistway wall 2 side facing the hoisting aid 25.

The hoisting machine 9 is disposed at the corner of the hoisting door 23 side in the plan view of the hoistway 1, which extends across the edge portion 17 and the hoisting aid support 18 of the hoisting assembly 15. As in the hoisting machine 9, as in the first embodiment, the rotating surface of the pulley 10 is horizontal, the pulley 10 faces the ceiling shaft of the hoistway 1, and the motor part 11 and the brake part 12 are lowered. It is installed to face. The hoist 9 is arranged at a corner of the hoisting door 23 side in the plan view of the hoistway 1.

A pair of counterweight rails 7 are provided along the hoistway wall 2 on the side where the hoisting auxiliary support 18 in the plan view of the hoistway 1 is provided. That is, the counterweight 6 moves up and down along the hoistway wall 2 on the side provided on the hoisting auxiliary support 18 in the plan view of the hoistway 1, so that the counterweight 6 becomes a so-called "balance weight side drop type". In addition, one side of the counterweight rail 7 is disposed at a corner of the side facing the lifting door 23 in the plan view of the hoistway 1 so that the pulley 10 of the second turning pulley 14 and the hoisting machine 9 can be mounted. The gap between) is installed to the maximum. This is because the pleat angle 20 is reduced as described in the first embodiment.

The second turning pulley 14 is disposed on the hoistway 1 in the lifting direction of the counterweight 6 simultaneously with the hoisting aid 25 and the hoisting aid 18 of the hoisting assembly 15. .

The method of mounting the first divert pulley 13 on the substrate 16 is the same as that of the first embodiment.

Next, the maintenance and inspection of the hoist will be described in detail, and FIG. 8 will be used for explanation.

As described above, the hoist 9 is provided to span the edge 17 and the hoisting support 18 of the hoisting assembly 15.

Moreover, the hoist 9 is provided so that the motor part 11 and the brake part 12 may face downward. Therefore, the motor part 11 and the brake part 12 can be visually inspected in the direction of the arrow E shown in FIG. 8, and the maintenance work can be performed in the direction of the arrow E. FIG.

Since the said elevator apparatus is comprised by the counterweight side drop system and 1: 1 roping, the same effect as Embodiment 1 can be acquired also in a counterweight side drop system. In addition, the hoisting machine 9 is installed so that the motor part 11 and the brake part 12 face downward, and the hoisting machine 9 is attached to the edge part 17 and the hoisting aid support 18 of the hoisting assembly 15. Since it installed so that it may be installed, the maintenance work and inspection work of the hoisting machine 9 can be performed easily, without providing the brake part inspection tool 19 in an Example.

Embodiment 3.

In the elevator apparatus according to another embodiment to which the present invention is applied, particularly in the counterweight sidedlock type elevator apparatus having a larger winding angle with respect to the pulley of the main rope than the elevator apparatus in Embodiment 2, FIGS. 9 and FIG. Explain using 10. In addition, in the present Example, the same code | symbol as Embodiment 1 shows the same or an equivalent part.

Compared with Embodiment 1, this embodiment differs only in the arrangement | positioning of the counterweight 6 and the counterweight rail 7, and the point is demonstrated. For convenience of explanation, two surfaces of the hoistway wall 2 in the plan view of the hoistway 1 that contact the installation side of the hoist gate 23 are referred to as the side surfaces.

In each figure, the hoist 9 is provided in one side surface of the hoistway wall 2. The counterweight 6 and the counterweight rail 7 are disposed between the car rail 4 and the installation side of the lifting door 23 of the hoistway wall 2 so as to contact the other side of the hoistway wall 2. . Accordingly, the position of the second diverting pulley 14 is also different from that of the first embodiment, and is provided above the counterweight 6 located above the hoistway 1.

The hoisting assembly 15 is supported by the car rail 4 and the counterweight rail 7. The hoisting machine 9, the first diverting pulley 13 and the second diverting pulley 14, which are installed in the hoisting assembly 15, are almost half surface of the elevating door 23 side in the plan view of the hoistway 1. Since the hoisting assembly 15 is about half the size compared with Embodiment 1, since it is concentrated to. In addition, the installation method of the hoisting machine 9, the 1st turning pulley 13, and the 2nd turning pulley 14 to the hoisting assembly 15 is the same as that of 1 at the time of implementation.

As can be seen from FIG. 10, the lifting angle of the main rope 8 to the pulley 10 is larger than that of the first embodiment, and the pulling ability of the pulley 10 can be further improved.

In addition, the lifting angle of the main rope 8 to the pulley 10 is varied by the shape of the top view of the car 3 and the hoistway 1, and according to the conditions for installing the elevator apparatus, according to the second embodiment or the ball embodiment You can choose the one with the best condition.

In the above elevator apparatus, the same effects as those in the first embodiment can be obtained, and the lifting angle can be increased with respect to the pulley 10 of the main rope 8 as necessary, thereby improving the towing capacity of the pulley 10. can do.

Moreover, the area of the board | substrate 16 can be made small and cost reduction can be aimed at.

The effect of the elevator apparatus of this invention is as follows.

The elevator apparatus according to the present invention has a car, which is lifted along a car rail installed in a hoistway, a counterweight that moves up and down along a counterweight rail installed in a hoistway, a pulley, a motor part for driving a pulley, a brake part for controlling a motor part, and a rotating surface of the pulley. The car is connected to the first and second diverting pulleys arranged on the upper part of the hoistway, the first and second diverting pulleys arranged on the upper part of the hoistway, and the counterweight is connected to the other end side to be horizontal, and the first and second diverting pulleys are connected to each other. Since the main rope is wound around the pulley to suspend the car and the counterweight, space saving in the hoistway can be achieved.

Further, the thickness of the hoisting machine in the rotational axis direction is thinner than the thickness in the vertical direction perpendicular to the rotational axis direction, so that space in the hoistway can be saved.

Moreover, since it is provided in the upper part of the hoistway and equipped with the hoister assembly which mounts a hoisting machine and a 1st and 2nd direction switching pulley, space saving in an hoistway can be aimed at. In addition, since the hoisting assembly is supported by the car rail or the counterweight rail, it is not necessary to separately install a member for supporting the hoisting assembly.

In addition, since the hoisting assembly is supported by the wall of the hoistway, there is no need to separately install a member for supporting the hoisting assembly.

In addition, the hoisting assembly has a height in the height direction of the hoistway, which is located within the height of the first turnover pulley or the second turnover pulley, thereby achieving space saving in the hoistway.

In addition, since the hoist is disposed at a corner in the plan view of the hoistway, it is possible to maintain a large gap between the first diverting pulley or the second diverting pulley.

In addition, the hoist is disposed so as to extend from the vertical projection surface of the car in the floor plan of the hoistway and at the same time, it is possible to maintain a large gap between the first divert pulley or the second divert pulley.

In addition, the hoisting machine is arranged so that the brake part is located below the hoistway, and maintenance can be easily performed.

In addition, the hoist is disposed on the upper surface of the hoisting assembly so that the brake part faces the lower side of the hoistway, and the hoisting assembly has an inspection opening provided to penetrate the vertical projection surface of the hoisting machine, so that maintenance can be easily performed.

Claims (10)

A car that moves up and down along a car rail installed in a hoistway, Counterweights lifting up and down along the counterweight rail installed in the hoistway, A pulley having a pulley, a motor part for driving the pulley, a brake part for controlling the motor part, and a hoist disposed at an upper end of the hoistway; and A suspension means wound on the pulley to suspend the car and the counterweight; A hoisting assembly for mounting the hoisting machine, The hoisting assembly is installed on the upper end of the hoistway, characterized in that the weapon-based elevator apparatus is always fixed so as not to move on the upper portion of the car rail or the counterweight. The method of claim 1, The hoisting machine is characterized in that the pulley is disposed so that the upper portion of the hoisting assembly, inorganic machine room elevator apparatus. delete delete delete A car that moves up and down along a car rail installed in a hoistway, Counterweights lifting up and down along the counterweight rail installed in the hoistway, A hoist having a pulley, a motor part for driving the pulley, a brake part for controlling the motor part, and a hoist disposed at an upper end of the hoistway, Suspension means wound on the pulley to suspend the car and the counterweight; It is fixed to the upper end of the hoistway, and includes a hoisting assembly for mounting the hoisting machine, The hoisting assembly is fixed and supported at all times so as not to move by the wall of the hoistway. delete The method of claim 1, The hoisting machine is disposed at a corner in the plan view of the hoistway, inorganic machine room elevator apparatus. The method of claim 1, And the hoist is arranged to extend from the vertical projection surface of the car at the same time as the corner in the plan view of the hoistway. delete

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