JP4313183B2 - Elevator equipment - Google Patents

Description

  The present invention relates to an elevator apparatus, and more particularly to an elevator apparatus configured to raise and lower two passenger cars in the same hoistway.

  Conventionally, an elevator apparatus configured to raise and lower two cars in the same hoistway has already been proposed as described in Patent Document 1, for example.

JP 2001-335259 A

  The elevator apparatus described in Patent Document 1 guides two cars in the same hoistway so that they can be raised and lowered, and lifts and lowers these two cars by using a dedicated hoist and a counterweight. Is.

  Since the elevator apparatus described in Patent Document 1 has a counterweight, the floor area of the car is limited by the counterweight, and it has been difficult to improve the passenger's transportation capacity with respect to the hoistway cross-sectional area. Moreover, since two hoisting machines are used for two cars, there is a limit to energy saving.

  The objective of this invention is providing the elevator apparatus which can improve the passenger | crew's transport capability with respect to hoistway cross-sectional area, and can contribute to energy saving.

  In order to achieve the above object, the present invention is configured such that an upper car and a lower car that are lifted and lowered in the same hoistway are suspended by a common main rope, and this main rope is driven by a single hoisting machine. It was.

  As described above, by hanging the upper car and the lower car with a common main rope, one side of the upper car and the lower car can function as a counterweight on the other side. As a result, the counterweight can be eliminated, and accordingly, the floor area of the car with respect to the hoistway cross-sectional area can be expanded, and the passenger's transportation capacity can be improved. In addition, since the two cars are driven by a single hoisting machine via a common main rope, energy consumption is reduced compared to the conventional case where two cars are driven by two hoisting machines. It can be reduced and energy saving can be measured.

  As described above, according to the present invention, it is possible to obtain an elevator apparatus that can improve passenger transportation capacity with respect to a hoistway cross-sectional area and can save energy.

  Hereinafter, a first embodiment of an elevator apparatus according to the present invention will be described with reference to FIGS.

  An elevator apparatus having an upper car and a lower car for moving up and down in the same hoistway is roughly composed of a pair of car guide rails 3A and 3B laid in one hoistway 2 formed in the building structure 1. The lower passenger car 5 serving the lower floors 4A and 4B of the building structure 1 guided by the guide rails 3A and 3B for the car and the upper passenger serving the upper floors 4C and 4D of the building structure 1 A car 6, a main rope 7 that suspends the lower car 5 and the upper car 6, and a hoisting machine 8 that winds and drives the main rope 7 are provided.

  The main rope 7 is engaged with a suspension beam 9A provided with one end 7A approaching the side wall of the hoistway that is substantially in the middle of the hoistway 2, and the other end 7B is hoisted at the top of the hoistway 2. It is suspended by engaging with a suspension beam 10A provided close to the side wall.

  The main rope 7 suspended from the suspension beam 9A extends upward through sheaves 11A and 11B pivotally supported on both sides in the rail gauge direction under the floor of the lower car 5, and is the same height as the suspension beam 9A. It is wound around suspension vehicles 12A and 12B supported by suspension beams 9B provided close to the opposite hoistway side wall at this position and extends downward. The main rope 7 extending downward from the suspension vehicles 12A and 12B passes through a turning pulley 13A that is pivotally supported by a fixed member between a traveling section in which the lower car 5 travels and a side wall of the hoistway 2 and changes its direction. And extend upwards. The main rope 7 whose direction has been changed upward from the turning pulley 13A is that of the hoisting machine 8 fixed below the suspension wheels 12A and 12B between the traveling section in which the lower car 5 travels and the side wall of the hoistway 2. After being wound around the sheave 14, it extends downward and is wound around a turning pulley 13B supported by the measuring direction of the turning pulley 13A. The main rope 7 wound around the turning pulley 13B is provided close to the opposite hoistway side wall at the same height as the suspended beam 10A between the traveling section of the upper car 6 and the hoistway side shadow. It is wound around suspension wheels 15A and 15B that are pivotally supported by the suspended beam 10B and extends downward. The main rope 7 that extends downward extends upward through sheaves 16A and 16B that are pivotally supported on both sides in the rail gauge direction under the floor of the upper car 6, and is engaged with the suspension beam 10A. To the other end 7B.

  Reference numerals 17A and 17B denote support columns for supporting the suspended beams 9A and 9B and the suspended beams 10A and 10B in the hoistway 2.

  In the above configuration, the reference floor of the lower car 5 is the lower floor 4A, the reference floor of the upper car 6 is the upper floor 4D, and the elevator 8 is driven when raising and lowering each car in this state. . By driving the hoisting machine 8, the lower car 5 and the upper car 6 are moved up and down at a constant speed and moved to the destination floor. However, since the raising and lowering of one side of the lower car 5 and the upper car 6 restricts the raising and lowering of the other side, the calls and destination registrations of the lower car 5 and the upper car 6 are monitored with each other so that there is no waste. Need to control.

  As described above, according to the present embodiment, since the lower car 5 and the upper car 6 are suspended in a slidable manner via the main rope 7, one of the cars functions as the other counterweight. To do. As a result, there is no need for a counterweight for the car, and the hoistway cross-sectional area can be reduced or the car floor area can be expanded by the amount that the counterweight is no longer needed. Can improve the transport capacity.

  Furthermore, since the lower car 5 and the upper car 6 are moved up and down by one hoisting machine 8, energy saving can be achieved as compared with the conventional case where each car is lifted and lowered by each hoisting machine. Can be planned.

  In the above embodiment, the turning pulleys 13A and 13B can be installed at any position below the suspension beams 9A and 9B between the traveling section of the lower car 5 and the hoistway wall. Therefore, the hoisting machine 8 can be installed between the traveling section of the lower car 5 and the hoistway wall at a position where it does not become an obstacle to the turning pulleys 13A and 13B below the suspension wheels 12A and 12B. The best arrangement in consideration of the installation and maintainability of the machine 8 can be selected.

  Moreover, in the said embodiment, in order to improve the passenger | crew's transport capability with respect to the hoistway cross-sectional area, the said hoisting machine 8 narrows as much as possible between the driving | running | working area of the lower car 5, and a hoistway wall. The thin hoisting machine has a smaller axial dimension than the radial dimension.

  FIG. 4 shows a second embodiment of the elevator apparatus according to the present invention, and the installation position of the hoisting machine 8 is greatly different from that of the first embodiment shown in FIG. Therefore, the same reference numerals as those in FIG. 1 denote the same components, and thus detailed description thereof is omitted.

  Specifically, in the present embodiment, the hoisting machine 8 is installed at a position corresponding to the uppermost stop floor of the upper car 6 between the traveling section of the upper car 6 and the hoistway wall. is there. Accordingly, the turning pulley 13B is also installed below the hoisting machine 8 between the traveling section of the upper car 6 and the hoistway wall.

  According to the present embodiment, it is possible to improve the passenger's transportation capacity and save energy with respect to the same hoistway cross-sectional area as in the first embodiment. Further, since the turning pulley 13B can be installed at an arbitrary position between the hoistway wall below the hoisting machine 8 and the traveling section of the upper car 6, the hoisting machine 8 is a hoisting car. Installation at any position below 15A and 15B and above the turning pulley 13B is possible, and as a result, the best arrangement in consideration of installation and maintainability can be selected.

  Next, a third embodiment of the elevator apparatus according to the present invention will be described with reference to FIGS. The same reference numerals as those in FIGS. 1 to 4 indicate the same components, and thus detailed description thereof is omitted.

  In the present embodiment, the installation position of the hoisting machine 8 in the first embodiment is the car non-running zone Z between the lower car 5 and the upper car 6, and the hoisting machine 8 is configured. For example, the vertical projection of the driving machine 8M such as a flat motor is installed so as to overlap with the car (the lower car 5 and the upper car 6). The vertical projection of the sheave 14 constituting the hoisting machine 8 is positioned between the traveling section of the car (the lower car 5 and the upper car 6) and the hoistway wall.

  According to the present embodiment, the vertical projection of the entire hoisting machine 8 is located between the traveling section of the car (the lower car 5 and the upper car 6) and the hoistway wall. As compared with the above, the distance between the traveling section of the car (the lower car 5 and the upper car 6) and the hoistway wall can be reduced. As a result, the floor area of the car with respect to the hoistway cross-sectional area can be expanded, and the passenger's transport capacity with respect to the hoistway cross-sectional area can be further improved.

  FIG. 8 shows a fourth embodiment of the elevator apparatus according to the present invention, which corresponds to the extension of the main rope 7 and the change in the height of the hoistway 2.

  Cams 18 and 19 are attached to the lower car 5 and the upper car 6, respectively, and a switch 20 for detecting that the lower car 5 is at the landing level of the lower floor 4A at the bottom is provided in the hoistway. A switch 21 is provided in the hoistway to detect that the upper car 6 is at the landing level of the uppermost upper floor 4D, and the level difference between the upper car 6 and the upper floor 4D is provided. A switch 22 for detecting B is installed below the switch 21 in the B dimension. These switches 20 to 22 and the respective 18 and 19 constitute a rope stretch detecting means.

  Further, a control device (not shown) for controlling the hoisting machine based on the detection signal of the switch 22 is provided.

  Therefore, if the level difference B is detected, the hoisting machine 8 is moved by the control device to move the lower car 5 downward, and the upper car 6 is moved upward to reduce the level difference B. Can be reduced.

  It is also possible to provide hydraulic or screw type rope length adjusting means 23 that operates when the switch 22 is operated at one end 7A and the other end 7B of the main rope 7. By providing such a rope length adjusting means 23, if the level difference B is detected by the switch 22 and the rope length adjusting means 23 is operated based on the detected level difference B, the main rope 7 is moved by the dimension corresponding to the level difference B. The tension length can be shortened by pulling, and the level difference B is corrected.

  The switches 20 to 22 are installed on the lowermost floor of the traveling section of the lower car 5 and on the uppermost floor of the traveling section of the upper car 6. It may be installed on the top floor and the bottom floor of the traveling section of the upper car 6.

  As described above, according to the embodiments of the present invention, the counterweight can be eliminated, so that the floor area of the car with respect to the hoistway cross-sectional area can be expanded, thereby the hoistway cross-sectional area. Can improve passenger transportation capacity. Moreover, since two passenger cars can be driven by one hoisting machine, energy saving can be achieved.

  By the way, the lower car 5 and the upper car 6 in each of the above embodiments are obtained by winding the main rope 7 around sheaves 11A, 11B, 16A, and 16B that are pivotally supported at the lower part of the car. These sheaves 11 </ b> A, 11 </ b> B, 16 </ b> A, 16 </ b> B may be supported on the upper parts of the lower car 5 and the upper car 6 and suspended by the main rope 7. Further, a square car frame may be provided without using the sheaves 11A, 11B, 16A, and 16B, and the main rope 7 may be connected to the car frame and suspended.

1 is a longitudinal schematic side view showing a first embodiment of an elevator apparatus according to the present invention. The cross-sectional enlarged plan view which follows the AA line of FIG. The cross-sectional enlarged plan view which follows the BB line of FIG. The longitudinal cross-sectional schematic side view which shows 2nd Embodiment of the elevator apparatus by this invention. The longitudinal cross-sectional schematic side view which shows 3rd Embodiment of the elevator apparatus by this invention. The cross-sectional enlarged plan view which follows the CC line of FIG. FIG. 6 is a cross-sectional enlarged plan view taken along line DD in FIG. 5. The longitudinal cross-sectional schematic side view which shows 4th Embodiment of the elevator apparatus by this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Building structure, 2 ... Hoistway, 3A, 3B ... Car guide rail, 4A, 4B ... Lower floor, 4C, 4D ... Upper floor, 5 ... Lower car, 6 ... Upper car, 7 ... Main rope, 8 ... hoisting machine, 8M ... drive machine, 14 ... sheave, 18, 19 ... cam, 20-22 ... switch, 23 ... rope length adjusting means.

Claims (8)

In an elevator device configured to move up and down so that two cars in the same hoistway, the upper car and the lower car, do not interfere with each other, suspension vehicles are installed at the top and middle of the hoistway , respectively. The two passenger cars are suspended by a common main rope wound around the suspension car, and the main rope between the top and middle suspension cars is suspended in the upper car at the uppermost stop position of the upper car. An elevator apparatus configured to be driven by one hoist installed below the top of the elevator.   The elevator apparatus according to claim 1, wherein the hoisting machine is installed between a traveling section of an upper car and a hoistway wall.   The elevator apparatus according to claim 1, wherein the hoisting machine is installed between a traveling section of a lower car and a hoistway wall.   The elevator apparatus according to claim 1, wherein the hoisting machine is installed in a car non-running section between an upper car and a lower car.   The hoisting machine is installed such that the vertical projection of the driving machine overlaps with the car, and the vertical projection of the sheave of the hoisting machine is positioned between the traveling section of the car and the hoistway wall. The elevator apparatus according to claim 4, wherein the elevator apparatus is provided.   The elevator apparatus according to claim 1, 2, 3, 4, or 5, wherein the upper car and the lower car are suspended by the main rope at a lower part of the car.   The elevator apparatus according to claim 1, 2, 3, 4, or 5, wherein the upper car and the lower car are suspended by the main rope at an upper part of the car. In an elevator device configured to move up and down so that two cars in the same hoistway, the upper car and the lower car, do not interfere with each other, suspension vehicles are installed at the top and middle of the hoistway , respectively. The two passenger cars are suspended by a common main rope wound around the suspension car, and the main rope between the top and middle suspension cars is suspended in the upper car at the uppermost stop position of the upper car. A rope elongation detecting means configured to be driven by a single hoist installed below the top of the rope and detecting the elongation of the main rope between the upper car and the lower car; An elevator apparatus comprising rope length adjusting means for shortening the stretch length of the main rope by a detection signal from the means.

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