JP2008100847A - Elevator device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator device for achieving a higher speed and a larger capacity while effectively utilizing the upper part of an elevator shaft. <P>SOLUTION: The elevator device comprises a drive mechanism 2 installed in a pit 3c of the elevator shaft 3, and a hanging rope 7 wound on a traction sheave 1 of the drive mechanism 2 in the state that it is connected and fixed at both ends via warping sheaves 8j, 8k provided on the upper sides of the elevator shaft 3 to a position on the lower side of a car ceiling of a car 4 and to a balancing weight 6, respectively. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an improvement in a traction type elevator apparatus in which a drive device is installed in a hoistway.

  In recent years, especially in urban areas, the efficient use of the building itself has been demanded. For example, the elevator's machine room that protrudes from the rooftop can affect the right to sunshine and damage the aesthetics. It has become.

  So far, various ideas have been made to accommodate the elevator control device in the hoistway and make it compact without particularly installing the elevator machine room. For example, as shown in FIG. 14, a “traction sheave elevator” described in Japanese Patent No. 2593288 includes a flat and thin drive mechanism 2 provided with a traction sheave 1, and a side wall 3 a in the hoistway 3 and an elevator car 4. A suspension rope 7 is installed between a sheave 5a at the bottom of the car 4 and a sheave 5b at the top of the counterweight 6, and is installed between the space formed by the projection surface in the vertical direction. Is fixed to the ceiling wall 3 b of the hoistway 3. FIG. 14 shows that the pit 3c in the hoistway 3 is located below the position 3d on the first floor (1F).

  The elevator shown in FIG. 14 is a system in which a suspension rope 7 is wound around a sheave 5a below the car 4 to drive the car like a moving pulley. With the above configuration, the space on the car 4 can be used effectively. The motor capacity of the drive mechanism can be kept relatively small, and the space occupied by the drive device can be reduced.

  In addition, as shown in FIG. 15, an “elevator device” described in Japanese Patent Application Laid-Open No. 9-156855 has a flat and thin drive mechanism 2 disposed in the upper space of the counterweight 6, and is located at the top of the hoistway 3. The car 4 is configured to be suspended through the provided warping sheaves 8a, 8b, 8c.

  Thus, by installing the flat and thin drive mechanism 2 including the traction sheave 1 between the side wall 3a in the hoistway 3 and the space formed by the vertical projection surface of the elevator car 4, the rooftop Thus, the space occupied by the entire apparatus can be made compact without providing a special machine room, and an elevator apparatus with good space efficiency can be realized.

  For example, in the elevator apparatus shown in FIG. 14, since the so-called 2: 1 roping is constituted by the moving pulley drive system, the rope speed is doubled with respect to the car ascending / descending speed, and the elevator speed is high. It was considered a problem when trying to make it easier. In addition, since the drive mechanism is housed in a space between the elevator car projection surface and the hoistway inner wall, the drive mechanism is configured to be flat and thin, so there is a problem in increasing the capacity. It remained.

  Further, in the elevator apparatus shown in FIG. 15, since the sheave is provided near the hoistway ceiling, the speed of the suspension rope is the same as the elevator car speed, but a space for accommodating the turning sheave is required at the upper part of the hoistway. Therefore, there was a problem in terms of effective use of the space in the hoistway.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide an elevator apparatus capable of simultaneously increasing the speed while suppressing the height of the hoistway without providing a special machine room. .

  In order to solve the above-described conventional problems, the present invention is to move up and down along a pair of guide rails provided in a hoistway, one end is fixed to the car, and the other end is along another guide rail. In an elevator apparatus composed of a suspension rope fixed to a lifting and lowering counterweight and a drive device having a traction sheave wound around the suspension rope, the drive device installed in the pit of the hoistway, and the suspension The ends of the ropes are connected to each other at a position below the car ceiling, and both ends of the suspension ropes wound around the traction sheaves of the drive unit are connected to the car and the warp sheaves respectively provided above the hoistway. It is characterized by being connected and fixed to the counterweight.

  In this way, 1: 1 roping realizes the same speed of the hanging rope and elevator car, and the drive device is installed in the pit, and the hanging rope car is connected and fixed at a position below the ceiling of the car. Therefore, it is possible to provide an elevator apparatus that can effectively use the upper portion in the hoistway, increase the speed, and increase the capacity.

  According to the present invention, 1: 1 roping realizes the same speed of the suspension rope and the elevator car, and the suspension rope is connected and fixed to the car at a position below the ceiling of the elevator car. It can be used effectively, and space saving and high speed can be realized at the same time.

  In addition, since the drive device is installed in the pit of the hoistway, it is possible to realize high speed and large capacity simultaneously with effective use of the upper part in the hoistway.

  The elevator apparatus according to the present invention is configured such that one end of the suspension rope is coupled to the car at a position below the car ceiling, thereby efficiently using the space above the car at the same time as increasing the speed of the elevator. One embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 13. The same components as those of the conventional configuration shown in FIGS. 14 and 15 are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 1 is a perspective view showing a first embodiment of an elevator apparatus according to the present invention, and FIG. 2 is an enlarged plan view thereof. That is, guide rails 9a and 9b for the car 4 having a T-shaped cross section are attached to the side wall 3a of the hoistway 3 via a bracket (not shown), and the left side of the floor 4a of the car 4, that is, the car ceiling of the elevator car 4. A hitch portion 4b projects from a position below 4c, and one end of a suspension rope 7 is connected and fixed to the hitch portion 4b via a hitch spring (not shown).

  Further, as shown in the plan view of FIG. 2, the top of the guide rail 9 a is accommodated in the space between the side wall 3 a of the hoistway 3 and the vertical projection surface of the elevator car 4. A flat and thin drive mechanism 2 having a traction sheave 1 is fixed to a guide rail 9a, and a suspension rope 7 is wound around the traction sheave 1. Guide rails 10a and 10b for guiding the counterweight 6 are provided adjacent to the car guide rail 9a, and the other end of the suspension rope 7 is connected to the upper end of the counterweight 6.

  In the elevator apparatus configured as described above, the elevator car 4 and the counterweight 6 coupled to both ends of the suspension rope 7 are respectively guided by the rotation of the traction sheave 1 coupled to the drive mechanism 2. 9a, 9b, 10a, 10b are guided and moved up and down.

  At this time, since the elevator car 4 is connected to the suspension rope 7 in the hitch portion 4b provided at a position below the car ceiling 4c, when the car 4 is lifted, the car ceiling 4c is attached to the attached drive mechanism. Can rise above 2 heights.

  Therefore, since the elevator apparatus according to the first embodiment is configured by 1: 1 roping as described above, the car 4 and the suspension rope 7 are driven at the same speed to increase the speed. In this embodiment, the drive device including the traction sheave 1 and the drive mechanism 2 is accommodated in a space between the side wall 3a of the hoistway 3 and the vertical projection surface of the elevator car 4, so that the car 4 is The hoistway 3 can be raised to the vicinity of the ceiling, and as a whole, the height of the hoistway 3 can be minimized and space saving can be realized.

  In the first embodiment, it has been described that the drive device is configured by one drive mechanism 2. However, the drive mechanism 2 is configured by two (plural) units, and high capacity is realized in addition to high speed. can do.

  That is, in the elevator apparatus according to the present invention, a second embodiment in which the drive apparatus is constituted by a plurality of drive mechanisms and realizes high speed and large capacity will be described below with reference to FIGS.

  In the elevator apparatus according to the second embodiment, as shown in FIG. 3 or FIG. 4, a flat and thin driving device provided on the top of a guide rail 9a having a T-shaped cross section for the car 4 is provided with a plurality of driving mechanisms 2A. 2B. These drive mechanisms 2A, 2B are arranged in the vertical direction as shown in FIG. 3 or in the depth direction of the car 4 as shown in FIG. 4, and these drive mechanisms 2A, 2B The connected traction sheaves 1A and 1B are each driven.

  Therefore, for example, in FIG. 3, the suspension rope 7 having one end connected to the lower counterweight 6 is wound around the lower half of the lower traction sheave 1B after being wound around the upper half of the upper traction sheave 1A. The upper traction sheave 1 </ b> A is again wound around the upper half circumference and descends downward, and is connected to a hitch portion 4 b provided below the elevator car 4. In this case, since the upper traction sheave 1A is wound twice, the rope groove width of the upper traction sheave 1A is formed to be twice the rope groove width of the lower traction sheave 1B. In FIG. 3, the suspension rope 7 winds the upper half circumference of the upper traction sheave 1A twice, so that the upper and lower sheaves 1A and 1B are finally wound about 3/4 round. Then, it will be connected with the counterweight 6 and the elevator car 4, and this is the same also in the structure shown in FIG.

  Thus, according to the second embodiment, the elevator car 4 moves at a high speed at the same speed as the suspension rope 7, and the car 4 obtains thrust from both of the two (plural) traction sheaves 1A and 1B. Therefore, the capacity can be increased.

  As shown in FIG. 4, when the traction sheaves 1A and 1B are arranged side by side in the depth direction, a large wrapping angle is obtained particularly for both the traction sheaves 1A and 1B, so that there is an advantage that a larger traction performance can be obtained. .

  In the first and second embodiments, the guide rails 9a and 9b of the car have been described as having a T-shaped cross section. However, one of the guide rails 9a is configured to have an H-shaped cross section. It is possible to provide an elevator apparatus that obtains large rigidity and enables more stable traveling.

  That is, a third embodiment of the elevator apparatus according to the present invention in which one of the guide rails for the car 4 has an H-shaped cross section will be described below with reference to FIGS.

  That is, in FIG. 5, one of the guide rails 9a and 9c for the car 4 is configured such that one of the guide rails 9c has an H-shaped cross section as shown in FIG. The rail 9c was fixed to one side wall 3a of the hoistway 3 via a bracket (not shown) so that the parallel side surfaces forming a pair face the car 4 side.

  Further, a flat and thin drive having a traction sheave 1 so as to be housed between the space formed by the vertical projection surface of the car 4 and the side wall 3a of the hoistway 3 at the top of the guide rail 9c. The mechanism 2 is provided.

  Further, in this embodiment, an L-shaped car frame 11 on which the car 4 is placed and supported at the center of gravity is configured, and the vertical beam 11a of the car frame 11 is enlarged as shown in FIG. The guide rollers 12a and 12b having a plurality of rollers 12aa and 12ba are vertically attached so as to sandwich and guide the parallel side portion 9ca closer to the car 4 in the configuration of the guide rail 9c having an H-shaped cross section. .

  Also, a roller 12c for guiding the car 4 along the T-shaped guide rail 9a is attached to the tip of the horizontal beam 11b of the L-shaped car frame 11 as in the other embodiments.

  5 and 6 do not show the guide rails 10a and 10b for the counterweight 6, but they are provided adjacent to the guide rail 9c for the car 4, and one end is connected to the upper portion of the counterweight 6. The suspended rope 7 is wound around the traction sheave 1 of the drive device, and the other end is connected and fixed to a hitch portion 4 b attached below the L-shaped car frame 11.

  In the third embodiment configured as described above, the car 4 is guided by the upper and lower guide rollers 12a and 12b while being supported by the vertical beam 11a, with the length direction of the guide rail 9c as an axis. The swing in the rotation direction is suppressed by the rollers 12aa and 12ba that press one parallel side portion 9ca from the front and back surfaces.

  Further, even when the car 4 swings in the front-rear direction, the guide roller 12c attached to the distal end portion of the cross beam 11b guides the guide rail 9c with the guide rail 9c interposed therebetween, so that the swing is suppressed and stable up-and-down movement is performed.

  As described above, according to the third embodiment, as in the first and second embodiments, it is possible to save space and increase the speed without providing a special machine room on the rooftop or the like. In addition to the above, the use of the guide rail 9c having a H-shaped cross section and high rigidity enables stable up-and-down movement.

  In addition, the car 4 is supported by the horizontal beam 11b of the L-shaped car frame 11 in a light and robust manner with a simple configuration.

  In each of the first to third embodiments, the car 4 and the counterweight 6 are connected to each other by one suspension rope 7. However, two (plural) suspension ropes 7 are used. By connecting, it is possible to further stabilize and speed up the car running.

  Next, FIG. 7 and FIG. 8 show a fourth embodiment of the elevator apparatus according to the present invention configured by connecting the car 4 and the counterweight 6 with two (plural) suspension ropes 7. This will be described below with reference.

  That is, in FIGS. 7 and 8, the flat and thin drive mechanism 2 in which the traction sheave 1 is connected to one of the guide rails 9a and 9b for guiding the car 4 is used in the first to third embodiments. Similarly to the form, the mounting structure is configured so as to be housed in the space between the elevator car 4 and the side wall 3a of the hoistway 3.

  That is, at the top of one guide rail 9a, two sheaves 8d, 8e are parallel to the left and right side surfaces viewed from the entrance side of the elevator car 4 and intersect with this at about 45 degrees. One sheave 8f is provided at a position excluding the space formed by projecting the image vertically.

  Further, below the car 4, hitch parts 4ba and 4bb for connecting the suspension rope 7 are provided. The hitch parts 4ba and 4bb are provided at positions symmetrical with respect to the center of gravity of the car 4. Yes. Further, the sheaves 8d and 8g corresponding to the hitch portions 4ba and 4bb are attached to the side wall 3a of the hoistway 3 so as to exclude the space formed by the vertical projection of the car 4.

  Accordingly, the two suspension ropes 7 connected at one end to the counterweight 6 are turned back by the sheave 8e attached to the ceiling wall 3b of the hoistway 3 above the counterweight 6, and then to the traction sheave 1 of the driving device. It is wound and then divided into two directions, that is, two systems.

  One end portion of the two suspension ropes 7 divided into two systems is one hitch portion provided below the car ceiling 4c via a sheave 8d attached to the wall of the hoistway 3 It is connected to the car 4 at 4ba.

  The other end of the two suspension ropes 7 divided into two systems is also approximately diagonally connected to the right side wall of the hoistway 3 through a sheave 8f attached to the hoistway 3 side wall at an angle of about 45 degrees. It goes down through a sheave 8g attached at 45 degrees, and is connected to the car 4 at the other hitch portion 4bb provided similarly below the car ceiling 4c.

  In the fourth embodiment configured as described above, the suspension rope 7 divided into two systems is driven by the drive mechanism 2 through the sheaves 8d, 8f, and 8g and through the sheaves 8e. The counterweight 6 is moved up and down.

  Therefore, according to the fourth embodiment, the car 4 is moved up and down at a high speed at the same speed as the suspension rope 7 by 1: 1 roping, and the car 4 is moved by the two suspension ropes 7. The car posture is stable because it runs while hanging diagonally on both the left and right sides. In addition, since the sheaves 8 d, 8 e, 8 f, and 8 g including the driving device are provided so as to avoid the space formed by projecting in the vertical direction of the car 4, the ceiling 4 c of the car 4 is the hoistway 3. The elevator apparatus including the hoistway 3 can be made compact by improving the utilization efficiency of the hoistway 3.

  Next, the left and right suspension positions as viewed from the entrance side of the elevator car 4 are arranged so as to be symmetrical with respect to the center of gravity of the car 4, and the driving device as shown in FIG. By providing them on both the left and right sides, the capacity can be increased.

  A fifth embodiment of the elevator apparatus according to the present invention that achieves a large capacity by installing a set of driving devices will be described with reference to FIGS.

  In the fifth embodiment shown in FIGS. 9 and 10, drive mechanisms 2A and 2B are connected and connected to the vicinity of the tops of guide rails 9a and 9b for guiding the car 4, respectively. Two guide rails 10aa, 10ba, 10ab, 10bb for the counterweights 6A, 6B are provided adjacent to the guide rails 9a, 9b for the car 4, respectively. On both the left and right sides of the elevator car 4, hitch portions 4ba and 4bb are attached at left and right symmetrical positions below the car ceiling, and the suspension ropes 7A and 7B, each of which is coupled at one end, are respectively wound around the traction sheaves 1A and 1B. Are connected to the counterweights 4A and 4B.

  In the fifth embodiment configured as described above, the drive mechanisms 2A and 2B on both sides are operated in synchronization, so that they are driven by one control device. The car 4 is driven up and down by two drive mechanisms 2A and 2B to obtain a large thrust. Moreover, since each suspension rope 7A, 7B constitutes 1: 1 roping, the moving speed of the car 4 is the same as that of the suspension ropes 7A, 7B, and the speed is increased.

  Also in this embodiment, as in the other embodiments, the driving devices 1A and 1B are mounted at positions excluding the vertical projection space of the car 4, so that a special machine room is provided on the rooftop or the like. There is no need, and the height of the hoistway 3 can be suppressed. Further, since the suspension positions of the suspension ropes 7A and 7B on the left and right sides are arranged symmetrically with respect to the center of gravity of the car 4, the attitude of the car 4 during the traveling can be stabilized.

  In the fifth embodiment, the counterweights 6A and 6B are provided on the left and right sides of the car 4, respectively, but the configuration can be simplified by using a common counterweight.

  That is, a sixth embodiment of the elevator apparatus according to the present invention, in which the counterweight is shared, will be described in detail below with reference to FIGS. 11 and 12.

  11 and 12, drive mechanisms 2A and 2B having traction sheaves 1A and 1Bb are provided near the tops of guide rails 9a and 9b for guiding the car 4, respectively. In the rear hoistway 3 between the guide rails 9a and 9b, one counterweight 6 connected and used in common is configured to move up and down while being guided by the guide rails 10a and 10b.

  Accordingly, on both the left and right sides of the car 4, to the hitch portions 4ba and 4bb provided below the car ceiling 4c, the suspension ropes 7A and 7B are coupled, and the suspension ropes 7A and 7B are respectively connected to the traction sheave 1A, It is wound around 1B and connected to a common counterweight 6.

  Also in the sixth embodiment configured as described above, the drive devices 2A and 2B on the left and right sides are controlled by one control device, and the car 4 is moved up and down by being driven at the same speed synchronously. Moving. Further, the car 4 receives thrust from the two drive mechanisms 2A and 2B, and moves up and down at the same speed as the suspension ropes 7A and 7B. Similarly to the first to fifth embodiments, the drive device and the sheaves 8ha, 8hb, 8ia, and 8ib are provided so as to avoid the space on the vertical projection surface of the car 4, so that the height of the hoistway 3 can be increased. It is also minimized.

  As described above, in each of the first to sixth embodiments, the drive device can be projected on the top of the guide rail 9a for the car 4 or on the wall of the hoistway 3 and in the vertical direction of the car 4. It has been described that it is attached and configured at a position excluding the space to be formed, but if it is a position excluding the space formed by the vertical projection of the car 4, it is in the hoistway 3 near the floor on the first floor. It can also be attached.

  When the drive unit is fixed to the guide rail, the mounting and fixing is relatively easy. However, when the guide rail is loaded and on the other hand, it is attached to the hoistway 3 wall. It is possible to obtain an effect that the structural load is not required.

  Further, when the drive device 2 is provided near the first floor (1F) of the hoistway, the height to the hoistway ceiling can be limited to the minimum as in the above embodiments, and at the same time, maintenance and inspection near the ground. Since it becomes work, the burden on the worker is reduced.

  Next, in each of the above-described embodiments, the drive device 2 is provided at a position in the upper part of the hoistway or in the vicinity of the first floor so as not to obstruct the raising / lowering movement of the car 4 and the height of the hoistway 3 is suppressed. However, even if the drive device is installed in the pit of the hoistway 3, the height in the hoistway 3 can be used effectively, and the height of the hoistway or the height of the building can be suppressed.

  A seventh embodiment in which the driving device 2 is mounted in the pit 3c of the hoistway 3 will be described with reference to FIG.

  That is, FIG. 13 shows a configuration in which a driving device composed of a traction sheave 1 and a driving mechanism 2 is mounted in a pit 3c of a hoistway 3, and one end portion of a suspension rope 7 wound around the traction sheave 1 Is attached to the hitch portion 4b attached below the car 4 via a sheave 8j attached near the ceiling in the hoistway 3, and the other end is also attached near the ceiling in the hoistway 3. It is fixedly connected to the counterweight 6 via a sheave 8k.

  Therefore, when the car 4 is raised and lowered, it can be effectively used up to the vicinity of the ceiling of the hoistway 3, and a 1: 1 roping is configured to increase the speed.

  In this embodiment, a single drive mechanism 2 is used. However, as with the devices shown in FIGS. 9 to 11, for example, a set of drive devices 2 is installed in the pit 3c to increase the capacity. Can be realized.

It is a principal part perspective view which shows 1st Embodiment of the elevator apparatus by this invention. It is a top view of the apparatus shown in FIG. It is a principal part perspective view which shows the 2nd Embodiment of this invention. It is a principal part perspective view which employ | adopted the other drive device with the apparatus shown in FIG. It is a principal part perspective view which shows the 3rd Embodiment of this invention. It is a top view of the apparatus shown in FIG. It is a principal part perspective view which shows the 4th Embodiment of this invention. It is a top view of the apparatus shown in FIG. It is a principal part perspective view which shows the 5th Embodiment of this invention. It is a top view of the apparatus shown in FIG. It is a principal part perspective view which shows the 6th Embodiment of this invention. It is a top view of the apparatus shown in FIG. It is a principal part perspective view which shows the 7th Embodiment of this invention. It is a principal part perspective view which shows the conventional elevator apparatus. It is a principal part perspective view which similarly shows the other conventional elevator apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traction sheave 2 Drive mechanism 3 Hoistway 3a Hoistway wall 3c Pit 4 Car 4a Floor 4b Hitch part 4c Car ceiling 5a, 5b Sheave 6 Counterweight 7 Suspension rope 8a-8k, Sheave 9a, 9b Car guide rail 10a, 10b Counterweight guide rail 11 L-shaped car frame 11a Vertical beam 11b Horizontal beam

Claims (2)

A hoistway having a hoistway wall and a bottom;
A car and a counterweight that alternately move up and down in the hoistway;
A hoisting machine having a rotatable traction sheave that overlaps with a car projection area in which the car is projected in the upward direction and that is installed at the bottom of the hoistway so that the traction sheave is out of the car projection area When,
A rotatable first sheave and a second sheave installed in the hoistway;
A car suspension part that hangs around the first sheave and suspends the car, and a weight suspension part that hangs around the second sheave and suspends the counterweight,
A suspension rope that is wound around the traction sheave between the cage suspension and the weight suspension;
An elevator apparatus comprising: A hoisting rope fixed to a counterweight, one end of which is fixed to the car and the other end is moved up and down along the other guide rail. In an elevator apparatus composed of a drive device having a traction sheave wound around a suspension rope,
Installing the drive in the pit of the hoistway;
Both ends of the suspension rope wound around the traction sheave of the driving device are respectively connected and fixed to a position below the car ceiling and a counterweight via a warp sheave provided above the hoistway. Elevator device characterized.

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