JP2014136636A - Double deck elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a double deck elevator capable of automatically correcting extension of a rope, and enabling a maintenance operator to accurately and easily grasp timing necessary to adjust the rope.SOLUTION: A double deck elevator includes: cord elements 17 suspending an upper car and a lower car; a fixed-member moving device 25 including a linearly moving portion 25a that vertically moves; a fixed member 42 that is fixed to the linearly moving portion 25a, to which one end of each cord element 17 is fixed, and that includes a protrusion portion 50; a switch 51; and a control device 8 connected to the fixed-member moving device 25 and the switch 51, and moving the linearly moving portion 25a. The control device 8 moves the linearly moving portion 25a upward to move the fixed member 42 upward by as much as a difference between a stop position of the upper car or the lower car when a load of the upper and lower cars is zero and a specified stop position of the upper car or the lower car. The switch 51 is operated by the protrusion portion 50 in response to movement of the fixed member 42 and transmits a signal to the control device 8. The control device 8 receives the signal and displays information on timing of adjusting the cord elements 17 on a monitor 70.

Description

  The present invention relates to a double deck elevator having a plurality of cars in a car frame.

  The double deck elevator has a plurality of cars in a car frame. In the following, a double deck elevator having two upper and lower cars, an upper car and a lower car, in the car frame will be described as an example. There is a type of double deck elevator that can be installed in buildings with different floor heights so that the upper and lower cars can be moved within the car frame to change the distance between the cars.

  In conventional double deck elevators, a car position adjustment rope is wrapped around pulleys provided under the upper car and under the lower car, respectively, and the rope is driven by a driving device installed at the top of the car frame. There are things that change the distance. In the double deck elevator, when the load applied to the main rope (main rope) for suspending the car frame and the car position adjusting rope changes, the rope extends in accordance with the change, and the floor position of the car changes.

  Patent Document 1 describes a double deck elevator provided with an elongation absorbing device (hitch moving device) that absorbs the elongation of a suspended body (rope). This hitch moving device has an actuator, adjusts the length of the rope by displacing the rope hitch in the vertical direction, and absorbs the aging of the rope and the elongation due to load fluctuations.

JP 2007-331871 A

  In conventional double deck elevators as described in Patent Document 1, the amount of rope hitch movement is structurally limited, so if the rope stretches continuously, the rope tightening adjustment Or truncation adjustment is required. However, since the degree of elongation of the rope varies depending on the use situation, it is difficult to accurately grasp when the rope is required to be tightened or trimmed, and it is difficult to know until confirmation at the time of inspection.

  An object of the present invention is a double-deck elevator that can automatically correct the stretch of the rope and enables the inspector to accurately and easily grasp the timing when the rope tightening adjustment or trimming adjustment is necessary. Is to provide.

  The double deck elevator according to the present invention has the following features.

  A car frame that moves up and down in the hoistway, an upper car that is arranged to move up and down inside the car frame, a lower car that is arranged to move up and down below the upper car inside the car frame, Positioning plates provided on the car frame for determining the stop positions of the upper car and the lower car, respectively, and provided on the upper car and the lower car, respectively, and stopped for the upper car and the lower car, respectively. A car position detecting device for detecting a position; a load detecting device for detecting a load applied to each of the upper car and the lower car; provided in each of the upper car and the lower car; A car position adjustment drive for moving the upper car and the lower car up and down inside the car frame, and both ends are attached to the car frame, wrapped around the car position adjustment drive, and the upper car And a double-deck elevator comprising a cable-like body that holds the lower car, and a fixed member moving device that is fixed to the car frame and has a linear motion part that moves in the vertical direction, and is fixed to the linear motion part, One end of the cord-like body is fixed, provided on the car frame with a fixing member having a protruding portion, and operated by the protruding portion when the fixing member moves by a predetermined distance. And a switch connected to the fixed member moving device and the switch, moving the linear motion portion to move the fixed member, and a monitor connected to the control device. The control device detects by the car position detection device of the upper car when it is determined that the loading amount of the upper car and the lower car obtained from the load detected by each load detection device is zero. The distance between the stop position of the upper car and the stop position of the upper car defined by the positioning plate of the upper car, or the stop position of the lower car detected by the car position detector of the lower car And the fixed member is moved upward by moving the linear motion portion upward by the distance of the difference between the lower car stop position determined by the positioning plate of the lower car and the lower car. The switch transmits a signal to the control device when operated by the protrusion by movement of the fixing member. When the control device receives the signal from the switch, the control device displays information on the adjustment time of the cords on the monitor.

  According to the present invention, it is possible to automatically correct the elongation of the rope, and the double deck elevator that allows the inspector to accurately and easily grasp the time when the rope tightening adjustment or the truncation adjustment is necessary. Can be provided.

It is the schematic which shows the whole structure of the double deck elevator by the Example of this invention. It is the schematic which shows the structure of the car frame of the double deck elevator by a present Example. It is a schematic diagram which shows the position of the front-end | tip of a fixed member moving apparatus and a linear motion part of a fixed member moving apparatus. It is a graph which shows the amount of aged growth of a rope. It is the schematic which shows the structure of the edge part attached to the upper beam of the cage | basket | car frame of the cage position adjustment rope in the double deck elevator by a present Example.

  A double deck elevator according to an embodiment of the present invention will be described with reference to the drawings. Note that in the drawings for describing the embodiments of the present invention, the same elements are denoted by the same reference numerals, and repeated description thereof may be omitted.

  FIG. 1 is a schematic diagram showing the overall configuration of a double deck elevator according to an embodiment of the present invention. The double deck elevator includes a hoistway 1, a car frame 2 that moves up and down in the hoistway 1, a counterweight 4 that moves up and down in the hoistway 1, one end connected to the car frame 2, and the other end connected to the counterweight 4. And a machine room 5 installed in the upper part of the hoistway 1.

  The car frame 2 and the counterweight 4 are suspended by the main rope 3 and move up and down in the hoistway 1 in opposite directions. In the machine room 5, a driving device 6, a deflecting wheel 7, and a control device 8 are installed. The driving device 6 is wound around the main rope 3 and drives the main rope 3 to lift the weight 4 against the car frame 2. The baffle wheel 7 is disposed in the vicinity of the driving device 6 and the main rope 3 is wound around it. The control device 8 controls the operation of the double deck elevator. The driving device 6 and the control device 8 are connected via a cable 36a. The control device 8 is connected to a control device 18 that controls the driving of the upper car 12 and the lower car 13 in the car frame 2 via a cable 36b.

  Inside the car frame 2, an upper car 12 and a lower car 13 positioned below the upper car 12 are arranged. The upper car 12 and the lower car 13 can move up and down within the car frame 2. Two upper car pulleys 9 a and 9 b are attached to the lower part of the upper car 12. Two lower car pulleys 10 a and 10 b are attached to the lower part of the lower car 13.

  In this embodiment, the interval between the landing floors of the upper floor 1a is larger than the interval between the landing floors of the lower floor 1b. That is, H1> H2, where the distance between the landing floors of the upper floor 1a is H1 and the distance between the landing floors of the lower floor 1b is H2.

  FIG. 2 is a schematic diagram showing the configuration of the car frame 2 of the double deck elevator according to the present embodiment. The car frame 2 includes an upper beam 2a provided at the upper part, an intermediate beam 2d provided at the intermediate part, a lower beam 2e provided at the lower part, and a pair connecting the upper beam 2a, the intermediate beam 2d, and the lower beam 2e. Vertical frames 2b and 2c. The vertical frame 2c protrudes above the upper beam 2a. The protruding portion includes four switches, which will be described later with reference to FIG. 5, that is, a first upper limit position switch 51, a second upper limit position switch 53, and a first switch. The lower limit position switch 52 and the second lower limit position switch 54 are provided.

  The car frame 2 moves up and down in the hoistway 1 while being guided by a pair of car frame guide rails 14 provided in the hoistway 1. Although not shown, the counterweight 4 is guided by a counterweight guide rail provided in the hoistway 1 and moves up and down in the hoistway 1.

  A car position adjustment driving device 11 is placed on the upper beam 2a via a vibration isolating rubber. The car position adjustment drive device 11 includes a car position adjustment drive sheave 11 a and moves the upper car 12 and the lower car 13 up and down inside the car frame 2.

  A pair of upper car guide rails 15 and a pair of lower car guide rails 16 are provided inside the car frame 2. The upper car 12 can move up and down along the pair of upper car guide rails 15 in the space between the upper beam 2a and the intermediate beam 2d. The lower car 13 can move up and down along the pair of lower car guide rails 16 in the space between the intermediate beam 2d and the lower beam 2e.

  The intermediate beam 2d is provided with a shock absorber 24a for supporting the upper car 12 from below and reducing the collision between the upper car 12 and the intermediate beam 2d when the upper car 12 is lowered too much in the car frame 2. It has been. The lower beam 2e includes a shock absorber 24b for supporting the lower car 13 from below and reducing the collision between the lower car 13 and the lower beam 2e when the lower car 13 is lowered too much in the car frame 2. It has been. A spring, a hydraulic damper, or the like can be used for the shock absorbers 24a and 24b.

  The distance between the upper car 12 and the lower car 13 can be changed by a car position adjusting rope 17 which is a cable-like body. As shown in FIG. 2, one end of the car position adjusting rope 17 is attached to the upper beam 2a via the elastic body 19, the fixing member 42, and the fixing member moving device 25, and the upper car pulleys 9a, 9b The upper car 12 is hung around the position adjustment drive sheave 11a. Thereafter, the car position adjusting rope 17 is wound around the two lower car pulleys 10a and 10b, and the other end is fixed to the intermediate beam 2d via the elastic body 19 and the fixing member 43, so that the lower car 13 is attached. Hold it. The elastic body 19 can be a spring, rubber, or elastic resin. In this embodiment, a spring is used.

  In addition, a positioning plate 20a for determining a stop position (position in the height direction) of the car frame 2 is provided on each floor inside the hoistway 1, and the car frame position detecting device 20 is provided in the car frame 2. Is provided. The car frame position detection device 20 detects the stop position of the car frame 2 in the hoistway 1 using the positioning plate 20a.

  Inside the car frame 2, there are provided a positioning plate 21 a for determining the stop position of the upper car 12 and a positioning plate 22 a for determining the stop position of the lower car 13 inside the car frame 2. The upper car 12 is provided with an upper car position detecting device 21 for detecting a stop position of the upper car 12 inside the car frame 2 and a load sensor 23a as a load detecting device. The lower car 13 is provided with a lower car position detecting device 22 for detecting a stop position of the lower car 13 inside the car frame 2 and a load sensor 23b as a load detecting device. The load sensor 23a detects a load applied to the upper car 12, and the load sensor 23b detects a load applied to the lower car 13. From these loads, the loading capacity of the upper car 12 and the lower car 13 can be obtained.

  As shown in FIG. 2, information obtained by the car frame position detection device 20, the upper car position detection device 21, the lower car position detection device 22, the load sensor 23 a, and the load sensor 23 b is transmitted to the control device 8.

  The car frame position detection device 20 detects the stop position of the car frame 2 with respect to the landing position of the hoistway 1 by the positioning plate 20a. The upper car position detection device 21 detects the stop position of the upper car 12 with respect to the car frame 2 by the positioning plate 21a, and the lower car position detection device 22 has the stop position of the lower car 13 with respect to the car frame 2 by the positioning plate 22a. Is detected. These position detection devices 20, 21, and 22 also detect changes in the car stop position due to load changes in the car. The stop position of the car frame 2, the stop position of the upper car 12, and the stop position of the lower car 13 detected by the position detection devices 20, 21, and 22 are transmitted to the control device 8. In addition, the existing position detection apparatus can be used for these position detection apparatuses 20, 21, and 22.

  The control device 8 uses the stop position of the car frame 2 detected by the car frame position detection device 20 to match the stop position of the car frame 2 with the position of the positioning plate 20a. A controller 18 that controls driving of the upper car 12 and the lower car 13 in the car frame 2 is connected to the controller 8 via a cable 36b (see FIG. 1). Further, the control device 8 uses the stop position of the upper car 12 detected by the upper car position detection device 21 to adjust the stop position of the upper car 12 to the position determined by the positioning plate 21a, and at the same time the lower car position detection device 22. The stop position of the lower car 13 is adjusted to the position determined by the positioning plate 22a using the stop position of the lower car 13 detected. Further, the control device 8 is connected to a monitor 70 installed in a monitoring room or the like, and provides the inspector with information on the time when the car position adjustment rope 17 needs to be tightened or trimmed.

  The control device 18 drives the car position adjustment drive device 11 in accordance with instructions from the control device 8, rotates the car position adjustment drive sheave 11 a and moves the car position adjustment rope 17, thereby moving the upper car inside the car frame 2. 12 and the lower car 13 are moved in opposite directions. In this way, the control device 8 causes the stop position of the upper car 12 and the stop position of the lower car 13 to be set to the position determined by the positioning plate 21a and the position determined by the positioning plate 22a via the control device 18, respectively. Match.

  As shown in FIG. 1, when the car frame 2 stops on the upper floor 1a, the control device 18 changes the distance between the upper car 12 and the lower car 13 to H1 because the distance between the landing floors is H1. When the car frame 2 stops at the lower floor 1b, the distance between the landing floors is H2, so the distance between the upper car 12 and the lower car 13 is changed to H2. In addition, the space | interval of the landing floor shown here is an illustration, and the space | interval of an actual landing floor differs with the conditions of a building, respectively.

  In general, in elevators, elastic bodies (springs) at the end of the rope that suspends the car, anti-vibration rubber provided between the car frame and the lower part of the car, and anti-vibration provided in the drive that drives the rope that suspends the car Since the rubber and the rope itself expand and contract according to the load change, the stop position of the car also changes according to the load change. For this reason, the stop position of the car may change by several tens of millimeters due to passengers getting on and off the car or loading luggage.

  In the double deck elevator according to the present embodiment, the stop position is changed by the change in the load applied to the car frame 2 and the upper car 12 and the lower car 13 in the car frame 2. For the car frame 2, the control device 8 drives the driving device 6 to adjust the position of the car frame 2, thereby correcting the change in the stop position. For the upper car 12 and the lower car 13, the control device 8 drives the car position adjustment drive device 11 via the control device 18, thereby moving the car position adjustment rope 17 to correct the change in the stop position and controlling the car. The apparatus 8 drives the fixed member moving device 25 to move the fixed member 42 up and down together with the car position adjusting rope 17 to adjust the positions of the upper car 12 and the lower car 13, thereby changing the stop position. Correct.

  One end of the car position adjusting rope 17 is fixed to the fixing member 42. The fixing member moving device 25 that moves the fixing member 42 is fixed to the upper beam 2 a of the car frame 2. The other end of the car position adjusting rope 17 is fixed to a fixing member 43, and the fixing member 43 is fixed to the intermediate beam 2 d of the car frame 2. The fixing member 42 is provided with a plate-like or rod-like protrusion 50 which will be described later with reference to FIG. The protrusion 50 is for operating the first upper limit position switch 51, the second upper limit position switch 53, the first lower limit position switch 52, and the second lower limit position switch 54.

  The rope is stretched by a certain amount due to the load applied by the use of the elevator, but this stretch is almost restored when the load is removed. However, ropes have the property that they grow over time while in use and this elongation remains permanently.

  FIG. 3 is a schematic diagram showing the positions of the fixed member moving device 25 and the tip (upper end) of the linear motion portion 25a of the fixed member moving device 25. The fixed member moving device 25 is a linear actuator, and includes a linear motion portion 25a that moves linearly. The linear motion portion 25a moves in the vertical direction to move the fixing member 42 (see FIG. 2 because it is not shown in FIG. 3), corrects the extension of the car position adjusting rope 17, and The change in the stop position of the lower car 13 is corrected.

  The position of the tip (upper end) of the linear motion part 25a changes according to the movement of the linear motion part 25a. The top end position 66, the upper limit position 63, the upper limit position 61 without loading, the lower limit position 62 without loading, the lower limit position 64, and the lowermost position 65 are arranged in order from the top with respect to the front end of the linear motion portion 25a. Define as follows. These positions can be set in advance. FIG. 3 shows a case where the front end of the linear motion portion 25 a is located at the uppermost end position 66 and a case where it is located at the lowermost position 65.

  The uppermost end position 66 is the position of the tip when the linear motion portion 25a is located at the uppermost position. The lowest end position 65 is the position of the tip when the linear motion portion 25a is located at the lowest position. The uppermost end position 66 and the lowermost end position 65 are determined based on the structure and size of the fixed member moving device 25.

  During the actual operation of the linear motion portion 25a, the tip of the linear motion portion 25a is prevented from reaching the uppermost end position 66 or the lowermost position 65 in order to provide a margin (play) in the operation range of the linear motion portion 25a. . The upper limit position is the upper limit position 63 and the lower limit position is the lower limit position 64 in the range in which the tip of the linear motion portion 25a actually moves. The control device 8 drives the fixed member moving device 25 so that the position of the tip of the linear motion portion 25a moves within the range between the upper limit position 63 and the lower limit position 64. The upper limit position 63 and the lower limit position 64 can be arbitrarily determined according to the operation characteristics of the fixed member moving device 25, such as the moving distance of the linear motion portion 25a.

  The lower limit position 62 when there is no load is when the upper car 12 and the lower car 13 are not loaded, and when the car position adjusting rope 17 is not stretched over time (the car position adjusting rope 17 is in the initial state). ) At the tip of the linear motion portion 25a. The upper limit position 61 without loading is when the upper car 12 and the lower car 13 are not loaded, and when the car positioning rope 17 is extended by the maximum allowable length (maximum allowable aging increase). Is the position of the tip of the linear motion portion 25a when the car position adjustment rope 17 is generated). The lower limit position 62 without loading can be determined by the weights of the upper car 12 and the lower car 13, the characteristics (for example, material, structure, and strength) of the car position adjusting rope 17. The distance between the lower limit position 62 without loading and the upper limit position 61 without loading is the maximum allowable aging elongation (allowable aging elongation length) 60 of the car position adjusting rope 17. This is the length of the aging that can be corrected by the car position adjusting rope 17. The allowable aging elongation length 60 of the car position adjusting rope 17 can be arbitrarily set based on the characteristics of the car position adjusting rope 17.

  When the leading end of the linear motion portion 25a reaches the upper limit position 61 when there is no load, the car position adjustment rope 17 is extended by the allowable aging extension length 60, so that the car position adjustment rope 17 is tightened or trimmed. Is the time when When the tip of the linear motion portion 25a reaches the upper limit position 63, the linear motion portion 25a (that is, the fixed member 42) cannot be moved upward any more, and the extension of the car position adjusting rope 17 cannot be corrected. This is a time when tightening adjustment or trimming adjustment of the position adjusting rope 17 is necessary.

  The initial position of the front end of the linear motion portion 25a (when the car position adjusting rope 17 is not stretched over time) corrects the position of the car when the passenger gets out of the car and the car is displaced upward. It is determined between the upper limit position 63 and the lower limit position 64 while considering the case.

  The aging of the car position adjusting rope 17 will be described with reference to FIG. FIG. 4 is a graph showing the amount of rope stretched over time, with the horizontal axis representing time T and the vertical axis representing rope stretch X. In general, the rope such as the car position adjusting rope 17 is stretched over time according to a curve as shown in FIG. The elongation of the rope varies depending on the usage situation (loading capacity, loading time, operating time, and operating distance). FIG. 4 shows curves when the stretch of the rope is maximum and minimum. The actual amount of rope elongation falls within the range between the curve with the maximum elongation and the curve with the minimum elongation.

  As shown in FIG. 4, the slope of the curve indicating the amount of elongation of the rope is large when the time T is small (initial time), but gradually decreases as time elapses, and after a certain time has elapsed. Is almost constant. This fixed time is determined by the characteristics of the rope.

  In general, the rope is inspected at predetermined intervals. This fixed period can be determined from the time when the rope tightening adjustment or truncation adjustment is necessary. The time when the rope needs to be adjusted can be determined by obtaining the relationship between the elapsed time T and the amount X of rope extension from the graph as shown in FIG. However, as described above, since the elongation of the rope changes according to the use situation, it is difficult to accurately grasp the time when the rope tightening adjustment or the truncation adjustment is necessary.

  In the double deck elevator according to the present embodiment, information about the time when the car position adjustment rope 17 needs to be adjusted or trimmed is provided to the inspector via the monitor 70. It is possible to accurately and easily grasp the time when 17 adjustments are necessary. In the following, with reference to FIG. 5, the extension of the car position adjusting rope 17 of the double deck elevator according to this embodiment is automatically corrected, and information on the time when the car position adjusting rope 17 needs to be adjusted is given to the inspector. A configuration to be provided will be described.

  FIG. 5 is a schematic view showing a configuration of an end portion of the car position adjusting rope 17 attached to the upper beam 2a of the car frame 2 in the double deck elevator according to the present embodiment. FIG. 5 shows a configuration in which the extension of the car position adjusting rope 17 is automatically corrected and information about the time when the car position adjusting rope 17 needs to be adjusted is provided to the inspector. The main components are the fixed member moving device 25, the fixed member 42, the protrusion 50, the first upper limit position switch 51, the first lower limit position switch 52, the second upper limit position switch 53, and the second lower limit position switch. 54, the control device 8, and the monitor 70.

  In this embodiment, it is assumed that the elastic body 19 is a spring and the fixing member 42 is formed of a metal plate. The fixing member 42 is fixed to the linear motion portion 25a of the fixing member moving device 25, and the fixing member moving device 25 is fixed to the upper beam 2a. As shown in FIG. 5, the car position adjusting rope 17 is composed of a plurality of wire ropes, and is fixed to the fixing member 42 through the thimble rod 40. More specifically, the car position adjusting rope 17 is suspended by a nut 41 and fixed to the fixing member 42 via the elastic body 19.

  In this embodiment, a hydraulic cylinder is used as the fixed member moving device 25. The piston portion of the hydraulic cylinder is the linear motion portion 25 a of the fixed member moving device 25. When the pressure generating device 27 supplies and discharges fluid according to the signal from the control device 8, the linear motion portion 25a of the fixed member moving device 25 moves up and down to move the fixed member 42 up and down. In order to move the fixing member 42 stably, a plurality of fixing member moving devices 25 are used. In this embodiment, as an example, two fixing member moving devices 25 are used. The control device 8 determines whether or not the car position adjustment rope 17 has extended over time, and controls the fixed member moving device 25.

  As described above with reference to FIG. 2, the second upper limit position switch 53, the first upper limit position switch 51, and the first lower limit are arranged in order from the top in the portion protruding upward from the upper beam 2 a of the vertical frame 2 c. A position switch 52 and a second lower limit position switch 54 are provided. These switches 51 to 54 are connected to the control device 8 and have projecting operation portions such as levers and knobs. When the operation portion faces upward or downward (or moves upward or downward), the control device 8 to send a signal. In the initial state, the second upper limit position switch 53 and the first upper limit position switch 51 are such that the operation unit faces downward (or is positioned downward), and when the operation unit faces upward (or upward) Is turned on) and sends a signal to the control device 8. In the initial state, the first lower limit position switch 52 and the second lower limit position switch 54 are such that the operation part faces upward (or is located above), and when the operation part faces downward (or downward) Is turned on) and sends a signal to the control device 8. As these switches 51 to 54, toggle switches, tumbler switches, rocker switches, or slide switches can be used.

  Further, as described above with reference to FIG. 2, a plate-like or rod-like protrusion 50 extending in the vertical direction is fixed to the fixing member 42. The protrusion 50 has a refracting portion at one upper portion and one lower portion, and the first upper limit position switch 51, the second upper limit position switch 53, the first lower limit position switch 52, and The second lower limit position switch 54 is operated. The first upper limit position switch 51 and the second upper limit position switch 53 are provided so as to be operated by the refracting portion on the upper portion of the protruding portion 50 when the fixing member 42 moves upward. And the second lower limit position switch 54 are provided so as to be operated by the refracting portion below the protruding portion 50 when the fixing member 42 moves downward.

  These switches 51 to 54 are each operated by the protrusion 50 when the fixing member 42 moves by a predetermined distance. The moving distance of the fixed member 42 on which the first upper limit position switch 51 is operated is the distance between the initial position of the tip of the linear motion portion 25a of the fixed member moving device 25 and the upper limit position 61 when there is no stacking. . The moving distance of the fixing member 42 on which the second upper limit position switch 53 is operated is a distance between the initial position of the tip of the linear movement portion 25 a of the fixing member moving device 25 and the upper limit position 63. The moving distance of the fixed member 42 on which the first lower limit position switch 52 is operated is the distance between the initial position of the tip of the linear motion portion 25a of the fixed member moving device 25 and the lower limit position 62 when there is no stacking. . The moving distance of the fixing member 42 on which the second lower limit position switch 54 is operated is a distance between the initial position of the tip of the linear motion portion 25 a of the fixing member moving device 25 and the lower limit position 64.

  When the leading end of the linear motion portion 25a of the fixed member moving device 25 reaches the upper limit position 61 when there is no stacking, the upper bent portion of the protrusion 50 of the fixed member 42 is the operating portion of the first upper limit position switch 51 Turn up (or move up). When the front end of the linear motion part 25a reaches the upper limit position 63, the refracting part at the top of the protrusion 50 turns the operation part of the second upper limit position switch 53 upward (or moves it upward). When the leading end of the linear motion portion 25a reaches the lower limit position 62 when there is no stacking, the refracting portion below the protrusion 50 turns the operation portion of the first lower limit position switch 52 downward (or moves downward). ) When the front end of the linear motion portion 25a reaches the lower limit position 64, the refracting portion below the protrusion 50 turns the operation portion of the second lower limit position switch 54 downward (or moves it downward).

  The vertical positions of these switches 51 to 54 are the upper limit position 61 without load and the upper limit position so that the refracting part of the protruding part 50 performs the above-described operation according to the position of the tip of the linear motion part 25a. 63, respectively corresponding to the lower limit position 62 and the lower limit position 64 when there is no loading.

  An example of a method for determining whether or not the car position adjusting rope 17 has been extended over time by the control device 8 will be described. When determining whether or not the car position adjusting rope 17 has been extended over time, the control device 8 uses the upper car position detecting device 21 and the lower car position detecting device 22 to stop the upper car 12 and the lower car 13. The position is detected, and the load applied to the upper car 12 and the lower car 13 is detected using the load sensor 23a and the load sensor 23b. When the load applied to the upper car 12 is equal to the weight of the upper car 12, it is determined that the loading capacity of the upper car 12 is zero, and the load applied to the lower car 13 is equal to the weight of the lower car 13 Determines that the load of the lower car 13 is zero. When it is determined that the loading capacity of the upper car 12 and the lower car 13 is zero, that is, when the upper car 12 and the lower car 13 are unloaded, the stop position of the upper car 12 is determined by the positioning plate 21a. When the position of the lower car 13 is deviated from the stop position or when the position of the lower car 13 is deviated from the stop position determined by the positioning plate 22a, the control device 8 causes the car position adjusting rope 17 to extend due to aging. Judge. Then, the distance of the stop position deviation (stop position difference) is regarded as the amount of aging of the car position adjusting rope 17 over time. When both the stop positions of the upper car 12 and the lower car 13 are shifted, the larger value of the distance of the stop position shift is regarded as the amount of aging of the car position adjusting rope 17 over time.

  The timing for determining whether or not the car positioning rope 17 has been extended over time can be arbitrarily determined (however, it is determined when passengers and luggage are not loaded in the upper car 12 and the lower car 13). desirable).

  When the control device 8 determines that the car position adjustment rope 17 is extended due to aging, the control device 8 controls the fixing member moving device 25 to move the fixing member 42 to correct the extension of the car position adjustment rope 17. The control device 8 moves the fixed member 42 upward by moving the linear motion portion 25a of the fixing member moving device 25 upward by the length of the car position adjusting rope 17 over time. The car position adjusting rope 17 is pulled upward by the distance moved by the fixing member 42 to correct the elongation. As described above with reference to FIG. 3, the upper limit position of the tip of the linear motion portion 25 a is the upper limit position 63, and the car position adjustment rope 17 has a maximum allowable length when the load amount of the car is zero. The position of the tip of the linear motion portion 25a when extended is the upper limit position 61 when there is no stacking.

  The control device 8 gradually moves the fixing member 42 upward through the fixing member moving device 25 to correct the elongation of the car position adjusting rope 17. When the fixing member 42 moves upward and the refracting portion on the upper part of the protrusion 50 turns on the first upper limit position switch 51, the first upper limit position switch 51 sends the first upper limit signal to the control device 8. Send. When receiving the first upper limit signal, the control device 8 determines that the tip of the linear motion portion 25a of the fixed member moving device 25 has reached the upper limit position 61 when there is no loading. When the fixing member 42 is further moved upward and the refracting portion at the top of the projecting portion 50 turns on the second upper limit position switch 53, the second upper limit position switch 53 causes the controller 8 to move to the second upper limit position switch 53. Send a signal. When receiving the second upper limit signal, the control device 8 determines that the tip of the linear motion portion 25 a of the fixed member moving device 25 has reached the upper limit position 63.

  When the control device 8 determines that the tip of the linear motion portion 25a of the fixed member moving device 25 has reached the upper limit position 61 when there is no loading, and the tip of the linear motion portion 25a of the fixed member moving device 25 is the upper limit position 63. When it is determined that the vehicle position has been reached, information on these determination results, the moving distance of the fixing member 42 (corresponding to the length of extension of the car position adjusting rope 17), and the adjustment time of the car position adjusting rope 17 is displayed in the monitoring room. And the like are displayed on a monitor 70 installed. Then, the inspector is notified that the car position adjustment rope 17 needs to be tightened or trimmed. For example, when it is determined that the leading end of the linear motion portion 25a has reached the upper limit position 61 when there is no load, a notice is given to notify that it is necessary to adjust the car position adjustment rope 17, and the linear motion portion When it is determined that the tip of 25a has reached the upper limit position 63, a warning is issued by notifying that the adjustment of the car position adjusting rope 17 is necessary immediately. The inspector can adjust the car position adjusting rope 17 based on the information displayed on the monitor 70 and can consider the timing of adjustment.

  The controller 8 also corrects the stop position of the car by correcting the extension of the car position adjusting rope 17 even when the car position adjusting rope 17 is extended due to the loading of passengers or luggage on the car and the stop position of the car is changed. can do. For example, when the stop position of the upper car 12 changes due to loading of passengers or luggage, the control device 8 detects the amount of change in the stop position by the upper car position detection device 21. Then, the fixed member moving device 25 moves the fixed member 42 to correct the elongation of the car position adjusting rope 17 so that the change amount of the stop position becomes zero, and the stop position of the upper car 21 is corrected. Even when the stop position of the lower car 13 changes, the control device 8 corrects the stop position of the lower car 13 in the same manner as in the case of the upper car 21.

  As described above, the double deck elevator according to the present embodiment includes the fixed member moving device 25, the fixed member 42, the protrusion 50, the switches 51 to 54, the control device 8, and the monitor 70. It is possible to automatically correct the elongation due to secular change and the elongation due to the loading of passengers and luggage to correct the change in the stop position of the car, and it is necessary to adjust the car position adjusting rope 17 to be tightened or trimmed. The inspector can be notified of the timing. Therefore, it is possible to eliminate the position shift at the floor level with respect to the car and the landing, and to prevent a step from occurring between the car and the landing. In addition, the inspector can accurately and easily grasp the time required for adjusting the car position adjusting rope 17 via the monitor 70 installed in the monitoring room or the like, and inspects the car position adjusting rope 17. The number of times can be reduced. The inspector only needs to monitor the monitor 70 in order to grasp the time when the car position adjusting rope 17 needs to be adjusted, and does not need to stop the elevator operation and enter under the car. . For this reason, it is possible to shorten the time to stop the operation of the elevator and to reduce the number of times.

  In the double deck elevator according to the present embodiment, the inspector determines how much the fixed member 42 has moved, that is, how much the control device 8 has corrected the elongation of the car position adjusting rope 17. It can be grasped visually from above. In a conventional double deck elevator, the inspector needs to enter under the upper car and under the lower car, and measure the distance from the shock absorber placed under the car and the car to understand the rope elongation. is there. However, in the double deck elevator according to the present embodiment, when the extension of the car position adjusting rope 17 is visually grasped, it can be easily grasped only by the work on the car frame 2. Furthermore, since it is not necessary to measure the distance from the car and the shock absorber, the time required to grasp the extension of the car position adjusting rope 17 can be greatly shortened, and the safety of the inspection work can be improved.

  In addition, this invention is not limited to said Example, Various modifications are included. For example, the above-described embodiments are described in detail for easy understanding of the present invention, and the present invention is not necessarily limited to an aspect including all the configurations described.

  Each configuration of the control device according to the present invention may be realized by hardware, for example, by designing a part or all of them with an integrated circuit. Some or all of these may be realized by software so that the processor interprets and executes a program that realizes each function. Information such as programs, tables, files, measurement information, and calculation information for realizing each function is stored in a recording device such as a memory, a hard disk, and an SSD (Solid State Drive), or an IC card, an SD card, and a DVD. It can be recorded on a recording medium. Therefore, each function of the control device according to the present invention can be realized as a processing unit, a processing unit, a program module, and the like.

  Further, in each drawing, control lines and information lines are described as necessary for explanation, and not all control lines and information lines necessary as products are necessarily described. In an actual product, it may be considered that almost all components are connected to each other.

  DESCRIPTION OF SYMBOLS 1 ... Hoistway, 1a ... Upper floor, 1b ... Lower floor, 2 ... Car frame, 2a ... Upper beam, 2b, 2c ... Vertical frame, 2d ... Intermediate beam, 2e ... Lower beam, 3 ... Main rope, 4 ... Balance Weight 5 ... Machine room 6 Drive unit 7 Biasing wheel 8 Control unit 9a 9b Upper car pulley 10a 10b Lower car pulley 11 Car position adjusting drive 11a Car position Adjustment drive sheave, 12 ... Upper car, 13 ... Lower car, 14 ... Car frame guide rail, 15 ... Upper car guide rail, 16 ... Lower car guide rail, 17 ... Car position adjustment rope, 18 ... Control device, 19 ... Elasticity Body, 20 ... car frame position detecting device, 20a ... positioning plate, 21 ... upper car position detecting device, 21a ... positioning plate, 22 ... lower car position detecting device, 22a ... positioning plate, 23a, 23b ... load sensor, 24a, 24b ... buffer, 25 ... Fixed member moving device, 25a ... linear motion portion, 27 ... pressure generating device, 36a, 36b ... cable, 40 ... thimble rod, 41 ... nut, 42, 43 ... fixing member, 50 ... projection, 51 ... first upper limit Position switch, 52 ... first lower limit position switch, 53 ... second upper limit position switch, 54 ... second lower limit position switch, 60 ... maximum permissible length of aging of the car positioning rope (allowable) (Elongation over time) 61: Upper limit position without loading, 62: Lower limit position without loading, 63: Upper limit position, 64: Lower limit position, 65: Lowermost position, 66: Uppermost position, 70: Monitor.

Claims (4)

A car frame that goes up and down in the hoistway;
The upper basket arranged to be movable up and down inside the car frame,
Inside the car frame, the lower car arranged to be movable up and down below the upper car,
A positioning plate provided on the car frame for determining the stop positions of the upper car and the lower car;
A car position detecting device that is provided in each of the upper car and the lower car, and detects the stop position of each of the upper car and the lower car;
A load detection device that is provided in each of the upper car and the lower car, and detects a load applied to each of the upper car and the lower car;
A car position adjustment drive device provided in the car frame for moving the upper car and the lower car up and down inside the car frame;
In a double deck elevator comprising both ends attached to the car frame, wound around the car position adjustment drive device, and a rope-like body that holds the upper car and the lower car,
A fixed member moving device fixed to the car frame and having a linear motion part that moves in the vertical direction;
Fixed to the linear motion part, one end of the cord-like body is fixed, and a fixing member having a protrusion;
A switch provided on the car frame and provided to be operated by the protrusion when the fixing member moves by a predetermined distance;
A controller that is connected to the fixed member moving device and the switch and moves the fixed member by moving the linear motion part;
A monitor connected to the control device,
The control device detects by the car position detection device of the upper car when it is determined that the loading amount of the upper car and the lower car obtained from the load detected by each load detection device is zero. The distance between the stop position of the upper car and the stop position of the upper car defined by the positioning plate of the upper car, or the stop position of the lower car detected by the car position detector of the lower car And moving the fixed member upward by moving the linear motion part by the distance of the difference between the stop position of the lower car defined by the positioning plate of the lower car,
When the switch is operated to the projecting portion by movement of the fixing member, the switch transmits a signal to the control device,
When the control device receives the signal from the switch, the control device displays information on the adjustment time of the cord-like body on the monitor.   The double-deck elevator according to claim 1, wherein an installation position of the switch is determined based on an upper limit position of a movement range of an upper end of the linear motion unit.   2. The double deck elevator according to claim 1, wherein an installation position of the switch is determined based on characteristics of the cord-like body between an upper limit position and a lower limit position of a movement range of an upper end of the linear motion portion. At least two of the switches are provided, and one of the switches has an installation position determined based on an upper limit position of a movement range of an upper end of the linear motion unit, and the other one of the switches Between the upper limit position and the lower limit position of the upper end movement range, the installation position is determined based on the characteristics of the cords,
2. The control device according to claim 1, wherein the control device displays different information on the monitor when the signal is received from one of the switches and when the signal is received from another one of the switches. Double deck elevator.

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