JP4541498B2 - Double deck elevator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a double deck elevator capable of adjusting the vertical distance between a pair of upper and lower cabs provided in a car frame, and more specifically, improved so that the vertical distance can be adjusted without causing an impact on the cab. Related to a double deck elevator.
[0002]
[Prior art]
  In recent years, double deck elevators with a pair of upper and lower cabs that respectively land on the two upper and lower floors of the building are attracting attention in order to enhance the vertical transportation capacity using elevators in skyscrapers. .
[0003]
  By the way, modern skyscrapers often have an atrium entrance hall or lobby on the first floor to enhance design, and the height from the floor to the ceiling on the first floor is set higher than that on other floors. There are many things.
  Therefore, a double deck elevator has been proposed that can change the vertical distance between a pair of upper and lower cabs in accordance with the vertical distance between floors to be landed.
[0004]
  For example, in a double deck elevator described in Japanese Patent Application Laid-Open No. 10-279231, a pair of upper and lower cabs 2 and 3 supported by a car frame 1 suspended by a main rope R as shown in FIG. Both are guided by a guide shoe 4 slidably engaged with a guide rail 1b provided on the vertical beam 1a of the car frame 1 so as to be movable up and down.
  The pair of upper and lower car chambers 2 and 3 are pivotally supported by the intermediate beam 1c of the car frame 1 in the vertical direction, and both upper and lower ends are pivotally supported by the pair of upper and lower car chambers 2 and 3, respectively. The pantograph mechanism 5 is connected to each other.
  Further, a drive mechanism 6 having a ball screw 6 a that is rotationally driven by a drive motor (not shown) is interposed between the upper car 2 and the upper beam 1 d of the car frame 1.
  Accordingly, when the ball screw 6a is rotated and the upper car 3 is lowered, the lower car 2 is raised by the action of the pantograph mechanism 5, and when the ball screw 6a is rotated and the upper car 3 is raised, the action of the pantograph mechanism 5 is raised. Since the lower car 2 is lowered, the vertical distance between the pair of upper and lower car rooms 2 and 3 can be freely changed.
[0005]
  At this time, the floor correction device including the pantograph mechanism 5 and the drive mechanism 6 operates according to the flowchart shown in FIG.
  That is, when the destination floor of the double deck elevator is determined by the button operation of the passenger who has entered the cab in step (hereinafter referred to as S) 1, the hoisting machine is driven and the double deck elevator is moved up and down to the destination floor in S2. .
  At this time, the vertical distance between the pair of upper and lower cabs 2 and 3 is adjusted in S3 in order to adjust the vertical distance between the pair of upper and lower cabs 2 and 3 according to the destination floor while the double deck elevator is moving up and down. In S4, a drive motor (not shown) of the drive mechanism 6 is operated to adjust the vertical interval between the pair of upper and lower cabs 2 and 3.
  After that, when it is determined in S5 that the vertical distance between the pair of upper and lower cabs 2 and 3 has become an appropriate distance, the drive motor of the drive mechanism 6 is stopped in S6.
  When it is determined in S7 that the vehicle has arrived at the destination floor, the operation of the hoisting machine is stopped in S8.
[0006]
  On the other hand, in the double deck elevator described in Japanese Patent Laid-Open No. 4-303378, the upper car room 2 is fixed to the car frame 1 and does not move up and down, but the lower car room 3 has a base 7. The vertical movement between the pair of upper and lower cabs 2 and 3 can be adjusted by supplying pressure oil from the hydraulic pressure supply device 9 to the drive mechanism 8 interposed therebetween. Yes.
[0007]
[Problems to be solved by the invention]
  by the way,FIG.In the double deck elevator shown in FIG. 1, when the vertical distance between the pair of upper and lower cabs 2 and 3 is not adjusted, a brake is applied so that the ball screw 6a of the drive mechanism 6 does not rotate. The vertical spacing is kept from changing.
  Thus, when adjusting the vertical distance between the pair of upper and lower cabs 2 and 3, it is necessary to release the brake applied to the ball screw 6a so that the ball screw 6a can freely rotate.
[0008]
  At this time, if the weight difference between the pair of upper and lower cabs 2 and 3 is large, a large external force is applied from the upper cab 2 to the ball screw 6a.
  As a result, the ball screw 6a rotates as soon as the brake applied to the ball screw 6a is released in order to adjust the vertical distance between the pair of upper and lower car chambers 2, 3, so that the upper car chamber 2 is suddenly displaced. The upper cab 2 is impacted or a large vibration is generated.
  And since the impact and big vibration which arose in the upper cab 2 are transmitted to the lower cab 3 via the pantograph mechanism 5, the passengers in the upper and lower cabs 2 and 3 are uncomfortable. End up.
[0009]
  On the other hand, in the double deck elevator shown in FIG. 13, in order to keep the lower cab 3 at a predetermined position in the vertical direction, a hydraulic circuit between the hydraulic pressure supply device 9 and the drive mechanism 8 is controlled using a control valve. It is shut off.
  Thereby, when adjusting the space | interval of the up-down direction between a pair of upper and lower cabs 2 and 3, you have to open a control valve.
  At this time, if excessive hydraulic oil is supplied from the hydraulic pressure supply device 9 to the drive mechanism 8 when the weight of the lower cab 3 is small, the lower cab 3 rises suddenly and the lower cab 3 3 is shocked or a large vibration is generated.
  Further, when the hydraulic pressure of the pressure oil supplied from the hydraulic pressure supply device 9 to the drive mechanism 8 is suddenly lowered when the weight of the lower cab 3 is large, the lower cab 3 is suddenly lowered, so that the lower cab 3 is lowered. An impact is given to the cab 3 or a large vibration is generated.
[0010]
  Accordingly, an object of the present invention is to eliminate the above-mentioned problems of the prior art and to give an impact to the car room or generate a large vibration when adjusting the vertical distance between the pair of upper and lower car rooms. The aim is to provide a double-deck elevator that never happens.
[0011]
[Means for Solving the Problems]
  The means according to claim 1 of the present invention for solving the above-mentioned problems is as follows.
  A double deck elevator capable of adjusting the vertical distance between a pair of upper and lower cabs provided in a car frame according to the vertical distance between floors on which the cabs are respectively landed,
  An ascending / descending interlocking means interposed between the pair of upper and lower car chambers, wherein one of the upper and lower pair of car rooms is interlocked with the raising of either one of the upper and lower car rooms;
  AboveA pair of top and bottomDrive means for displacing the car room in the vertical direction with respect to the car frame;
  A weight difference measuring means for measuring a weight difference between the pair of upper and lower cages;
  Control means for controlling the operation of the drive means,
  The ascending and descending interlocking means is a ball screw attached to the car frame and extending in the vertical direction, wherein the direction of the screw of the part that respectively engages with the part that respectively supports the pair of upper and lower car chambers is reversed.
  The driving means is a motor that is attached to the car frame and rotationally drives the ball screw in both forward and reverse directions,
  The control means includes theA pair of top and bottomBefore displacing the cage, a driving force having a magnitude corresponding to the weight difference obtained from the weight difference measuring means is applied.MotorTo outputMotorIt is characterized by controlling the operation.
[0012]
  That is, the claim1In the double deck elevator described in 1), before the cab is displaced, control is performed such that the driving means outputs a driving force having a magnitude corresponding to the weight difference between the pair of upper and lower cabs.
  At this time, the magnitude of the driving force output by the driving means may be the sum of the driving force necessary to displace the cab and the driving force having a magnitude commensurate with the weight difference between the cabs. it can.
  In addition, after balancing the weight difference between the car rooms and the driving force, the car room can be displaced by gradually increasing or decreasing the driving force.
  As a result, it is possible to displace the car room in the vertical direction while preventing the pair of upper and lower car rooms from being displaced by the weight difference, thereby giving an impact to the car room or causing a large vibration. The vertical space between the pair of upper and lower cabs can be adjusted.
  The control means stores a map representing the relationship between the weight difference between the pair of upper and lower cabs and the driving force to be output by the driving means in the storage means, and also calculates the weight difference obtained from the weight difference measuring means. By referring to this map based on this, the magnitude of the driving force that the driving means should output can be determined.
[0013]
  Further, the claims of the present invention for solving the above-mentioned problems2The means described in claim1To the double deck elevator described inLeave,
  AboveA pair of top and bottomFurther comprising holding means capable of holding the cab without being displaced in the vertical direction relative to the car frame, and the operation of which is controlled by the control means;
  The holding means is a brake device attached to the car frame, which is detachably and frictionally engaged with a disc-like brake disk fixed to the ball screw and rotating integrally.
  The control means includes themotorSaidA pair of top and bottomAfter outputting the driving force to displace the cabRelease the brake device and allow vertical displacement of the pair of upper and lower cabs relative to the car frame.It is characterized by that.
[0014]
  That is, the claim2In the double-deck elevator described in (4), since the driving means outputs the driving force corresponding to the weight of the car room or the weight difference between the upper and lower pair of car rooms, the car room is released. As soon as the car is released, the cab does not move up and down due to its own weight, so the vertical space between the upper and lower cabs does not impact the cab or cause large vibrations. Can be adjusted smoothly.
[0015]
  Further, according to a third aspect of the present invention for solving the above-mentioned problems, in the double deck elevator according to the second or third aspect, the weight difference measuring means is a stress value generated in the brake disc. The weight difference is obtained by measuring.
[0016]
  According to a fourth aspect of the present invention for solving the above-mentioned problems, in the double-deck elevator according to the second or third aspect, a drag force against the vertical displacement of the pair of upper and lower cabs is added. The drag adding means further includes a friction body that slides on the surface of the brake disk, and a coil spring that presses the friction body against the surface.
[0017]
  Further, the means according to claim 5 of the present invention for solving the above-mentioned problems is the double deck elevator according to claim 2 or 3,AboveA pair of top and bottomDrag adding means to add drag to resist vertical displacement of the cabFurther, the drag addition means is a magnet attached to the car frame that is arranged in the vicinity of the surface of the brake disc and generates eddy current.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
  Hereinafter, each embodiment according to the present inventionAnd for each reference exampleThe double deck elevator will be described in detail with reference to FIGS. In the following description, the same reference numerals are used for the same parts as those of the conventional double deck elevator described above, and the description thereof is omitted.
[0019]
  First reference example
  First, referring to FIG.First reference exampleThe double deck elevator will be described.
[0020]
  The double deck elevator 100 shown in FIG. 1 is provided with a pair of upper and lower cabs 2 and 3 in a car frame 1 suspended by a main rope R.
  The upper car chamber 2 is elastically supported by the intermediate beam 1 c of the car frame 1 via the elastic body 10. On the other hand, the lower car chamber 3 is elastically supported via an elastic body 10 on a base 11 that can be displaced in the vertical direction with respect to the car frame 1.
[0021]
  A linear former (weight measuring means) 12 is interposed between the lower cab 3 and the base 11.
  Thus, the weight of the lower cab 3 can be measured based on the spring constant of the elastic body 10 and the amount of vertical displacement of the lower cab 3 relative to the base 11 measured by the linear former 12. it can.
[0022]
  The base 11 is supported on the lower beam 1 e of the car frame 1 by a pair of left and right hydraulic cylinders 13. The hydraulic cylinder 13 is supplied with pressure oil from a pressure oil supply device as shown in FIG. 13 and moves up and down the lower car chamber 3 by its expansion and contraction, thereby moving the upper and lower car chambers 2 and 3 in the vertical direction. The interval is adjusted.
[0023]
  When the lower car chamber 3 is kept at a predetermined vertical position with respect to the car frame 1, a control valve (holding means) provided in the middle of a hydraulic circuit that supplies pressure oil to the pair of left and right hydraulic cylinders 13 is provided. Close and prevent the pair of left and right hydraulic cylinders 13 from expanding and contracting.
  As a result, when changing the vertical position of the lower cab 3, it is necessary to open the control valve so that the pair of left and right hydraulic cylinders 13 can expand and contract.
[0024]
  At this time, before opening the control valve, the hydraulic pressure of the pressure oil supplied from the pressure oil supply device to the hydraulic cylinder 13 is controlled according to the weight of the lower cab 3.
  That is, the magnitude of the driving force by which the hydraulic cylinder 13 displaces the car chamber 3 in the vertical direction is the sum of the driving force necessary for displacing the car chamber 3 to the driving force having a magnitude commensurate with the weight of the car chamber 3. It has been made.
  Then, after controlling the pressure of the pressure oil supplied to the pair of left and right hydraulic cylinders 13 as described above, the control valve is opened to supply the pressure oil.
[0025]
  Therefore, when the control valve is opened to change the vertical position of the lower car chamber 3, the weight of the lower car chamber 3 and the pair of left and right hydraulic cylinders 13 support the car chamber 3 in the vertical direction. The driving force is almost balanced.
  Then, since the pair of left and right hydraulic cylinders 13 are expanded and contracted in a state in which they are substantially balanced, there is no impact between the lower cab 3 and no significant vibrations, so that there is no vibration between the upper and lower cabs 2 and 3. Can be adjusted smoothly.
[0026]
  First1Embodiment
  Next, referring to FIG.ofFirst1The double deck elevator according to the embodiment will be described.
[0027]
  The double deck elevator 200 shown in FIG. 2 and FIG. 3 has a car frame 1 suspended by a main rope R, and a pair of upper and lower car chambers 2 and 3 provided in a vertically displaceable manner.
  The upper cab 2 is elastically supported by the base 14 and the lower cab 3 is elastically supported by the elastic body 10 with respect to the base 11, respectively.
  A linear former (weight measuring means) 15 is provided between the upper cage 2 and the base 14, and a linear former (weight measuring means) 13 is provided between the lower cage 3 and the base 11. Are intervened.
  Thus, the weights of the car chambers 2 and 3 are individually determined by the spring constant of the elastic body 10 and the amount of vertical displacement of the car rooms 2 and 3 with respect to the bases 14 and 11 measured by the linear formers 15 and 12. Can be measured.
[0028]
  The bases 14 and 11 are engaged with ball screws (elevation interlocking means) 16 attached to the car frame 1 and extending in the vertical direction via ball screw nuts (not shown).
  On the other hand, the direction of the screw of the ball screw 16 is reversed in the upper half 16a and the lower half 16b as shown in the figure.
  Thus, when the ball screw 16 is rotated in both forward and reverse directions using an electric motor (drive means) 17 attached to the upper portion of the car frame 1, the pair of upper and lower car chambers 2, 3 are moved closer to each other and separated from each other. You can make it.
[0029]
  A disc-shaped brake disc 18 is fixed to the upper portion of the ball screw 16, and a brake device (holding means) 19 that is detachably engaged with the brake disc 18 is attached to the car frame 1. .
  As a result, the ball screw 16 cannot be rotated when the brake disc 18 is sandwiched by the brake device 19, so that the pair of upper and lower car chambers 2 and 3 can be held so as not to be displaced in the vertical direction with respect to the car frame 1.
[0030]
  Next, with reference to FIG. 2, the control means for controlling the operation of the electric motor 17 and the brake device 19 will be described.
[0031]
  The control means 20 shown in FIG. 3 has a target speed command unit 21 that commands a target rotational speed of the electric motor 17.
  This target speed command section 21 can adjust the vertical interval between the pair of upper and lower cabs 2 and 3 to a predetermined value until the passenger who has entered the cab reaches the destination floor designated by the button operation. The target rotational speed of the electric motor 17 is commanded.
  On the other hand, the pulse signal obtained from the pulse generator 22 for measuring the rotation speed of the electric motor 17 is converted into a speed signal by the speed conversion processing unit 23.
  The feedback signal 24 output from the speed conversion processing unit 23 is added to the target speed command signal 25 output from the target speed command unit 21.
  Next, the speed difference signal 26 obtained by adding the feedback signal 24 to the target speed command signal 25 is subjected to PI processing by the proportional element 27, the integral element 28, and the proportional element 29, and then the electric motor torque control unit 30. Is output as a torque command signal 31.
[0032]
  This time1In the embodiment, by adding the torque command signal 33 output from the cage weight difference measuring unit (weight difference measuring means) 32 to the torque command signal 31 output to the electric motor torque control unit 30, the electric motor 17 is The magnitude of the driving torque for rotationally driving the ball screw 16 is corrected.
[0033]
  That is, in the upper car weight measuring unit (weight measuring means) 34 of the car room weight difference measuring unit 32, the linear constant 15 is measured by the spring constant of the elastic body 10 that elastically supports the upper car room 2. The weight of the upper cab 2 is measured from the amount of vertical displacement of the upper cab 2 with respect to the base 14.
  Similarly, in the lower car weight measuring unit (weight measuring means) 35, the spring constant of the elastic body 10 that elastically supports the lower car chamber 3 and the lower car chamber 3 measured by the linear former 12. The weight of the lower cab 3 is measured from the amount of vertical displacement of the base 11.
[0034]
  The weight of the upper car room 2 obtained from the upper car weight measuring unit 34 is converted into a torque command signal for the electric motor 17 in the upper car weight conversion processing unit 36.
  At this time, the torque command signal output from the upper car weight conversion processing unit 36 is such that the electric motor 17 cancels the torque that the upper car chamber 2 tries to rotate the ball screw 16 in the forward direction by its weight. Command to output.
[0035]
  Similarly, the weight of the lower car chamber 3 obtained from the lower car weight measuring unit 35 is converted into a torque command signal for the electric motor 17 in the lower car weight conversion processing unit 37.
  At this time, the torque command signal output by the lower car weight conversion processing unit 37 is such that the lower car chamber 3 cancels the torque that causes the ball screw 16 to rotate in the reverse direction due to its weight. 17 instructs to output.
[0036]
  Thereby, the torque output by the cage weight difference measuring unit 32 obtained by subtracting the torque command signal output from the lower car weight conversion processing unit 37 from the torque command signal output from the upper car weight conversion processing unit 36. The command signal 33 indicates the torque required for the electric motor 17 to prevent the ball screw 16 from rotating in either the forward or reverse direction due to the weight difference between the pair of upper and lower cabs 2 and 3. Command to output.
[0037]
  That is, this1In the double deck elevator 200 according to the embodiment, the driving torque output from the electric motor 17 that rotationally drives the ball screw 16 is such that the weight difference between the pair of upper and lower cabs 2 and 3 causes the ball screw 16 to move forward or backward. And a torque component for rotating the ball screw 16 in order to adjust the vertical interval between the pair of upper and lower cabs 2, 3.
[0038]
  Further, the control means 20 outputs the driving torque determined as described above to the electric motor 17, then releases the operation of the brake device 19 and moves the pair of upper and lower cabs 2, 3 in the vertical direction with respect to the car frame 1. Allow displacement.
[0039]
  Therefore, this book1In the double deck elevator 200 according to the embodiment, even if the operation of the brake device 19 is released, the ball screw 16 does not rotate due to the weight difference between the pair of upper and lower cabs 2 and 3. As soon as the operation of 19 is released, the pair of upper and lower cabs 2 and 3 are not suddenly displaced in the vertical direction.
  As a result, this book1According to the double deck elevator 200 of the embodiment, the vertical space between the pair of upper and lower cabs 2 and 3 can be smoothly smoothed without giving an impact to the pair of upper and lower cabs 2 and 3 and causing large vibrations. Can be adjusted.
[0040]
  First2Embodiment
  Next, referring to FIG.2The double deck elevator according to the embodiment will be described.
[0041]
  No. mentioned above1In the embodiment, the weight difference between the pair of upper and lower cabs 2 and 3 is calculated by individually measuring the weights of the pair of upper and lower cabs 2 and 3.
  In contrast to this2In the embodiment, the weight difference between the pair of upper and lower cabs 2 and 3 can be directly measured.
[0042]
  For this reason2In the double deck elevator 300 of the embodiment, as shown in FIG. 4, a strain gauge 51 is attached to the brake disk 18, and a stress value generated in the brake disk 18 is measured.
[0043]
  That is, the ball screw 16 is rotated in either the forward or reverse direction due to the weight difference between the pair of upper and lower cabs 2 and 3.
  At this time, if the brake disc 18 is held by the brake device 19 and held so that the ball screw 16 does not rotate, a stress proportional to the weight difference between the pair of upper and lower cabs 2 and 3 is generated on the brake disc 18.
  Therefore, the weight difference between the pair of upper and lower cabs 2 and 3 can be directly measured by measuring the stress value generated in the brake disk 18.
[0044]
  Further, in the control means 50 for controlling the operation of the drive motor 17, as shown in FIG. 5, a signal representing a weight difference between the pair of upper and lower cabs 2 and 3 obtained from a load sensor such as a strain gauge 51 is provided. The conversion processing unit 52 converts the torque command signal 53 to the electric motor 17.
  The torque command signal 53 output from the conversion processing unit 52 is added to the torque command signal 31 input to the electric motor torque control unit 30.
[0045]
  Instead of measuring the value of the stress generated in the brake disk 18, the weight difference between the pair of upper and lower cabs 2 and 3 can be directly measured by measuring the value of the stress generated in the ball screw 16.
[0046]
  Second reference example
  Next, referring to FIG.Second reference exampleThe double deck elevator will be described.
[0047]
  No. mentioned above2In the embodiment, the weight difference between the pair of upper and lower cabs 2 and 3 is directly measured for a double deck elevator that adjusts the vertical distance between the pair of upper and lower cabs 2 and 3 using the ball screw 16. The method was shown.
  Book against thisSecond reference exampleWill describe a method of directly measuring the weight difference between a pair of upper and lower cabs 2 and 3 for a double deck elevator that adjusts the vertical distance between the pair of upper and lower cabs 2 and 3 using the pantograph mechanism 5. .
[0048]
  Book shown in FIG.Second reference exampleIn the double deck elevator 400, a pair of upper and lower cabs 2 and 3 are connected to each other by a pantograph mechanism 5 pivotally supported by an intermediate beam 1c of the car frame 1.
  A drive mechanism 60 for displacing the car room 3 in the vertical direction is interposed between the lower car room 3 and the lower beam 1e of the car frame 1.
[0049]
  The drive mechanism 60 is configured to rotate a ball screw nut 62 screwed with a ball screw 61 suspended from the lower car chamber 3 by a drive motor (not shown), and the ball screw nut 62 is interposed via a load cell 63. It is attached to the lower beam 1 e of the cage frame 1.
[0050]
  As a result, when the upper car chamber 2 is heavier, an upward external force acts on the lower car chamber 3 by the action of the pantograph mechanism 5, so that the load cell 63 is connected via the ball screw 61 and the ball screw nut 62. Therefore, the vertical compression force acts.
  On the other hand, when the lower cab 3 is heavier, the lower cab 3 tends to descend, so that the load cell 63 receives a tensile force in the vertical direction via the ball screw 61 and the ball screw nut 62. Works.
[0051]
  Therefore, by measuring the magnitude of the external force acting on the load cell 63 of the drive mechanism 60, the weight difference between the pair of upper and lower cabs 2 and 3 can be directly measured. Based on the directly measured weight difference between the pair of upper and lower cabs 2, 3, the driving mechanism 60 controls the magnitude of the driving force applied to the lower cab 3 to give an impact or a large impact. The vertical interval between the pair of upper and lower cabs 2 and 3 can be adjusted smoothly without causing vibration.
[0052]
  Third reference example
  Next, referring to FIG. 7 and FIG.Third reference exampleThe double deck elevator will be described.
[0053]
  Mentioned aboveThe first and second embodiments and the first and second reference examplesThe double deck elevator smoothly adjusts the vertical distance between the pair of upper and lower cabs 2 and 3 by controlling the magnitude of the driving force that displaces the pair of upper and lower cabs 2 and 3 in the vertical direction. It was a thing.
  In contrast, the bookThird reference exampleThe double-deck elevator 500 smoothly adjusts the vertical distance between the pair of upper and lower cabs 2 and 3 by applying a drag force against the vertical displacement of the pair of upper and lower cabs 2 and 3. is there.
[0054]
  That is, in the double deck elevator 500 shown in FIG. 7, a pair of upper and lower cabs 2 and 3 are connected to each other by a pantograph mechanism (elevation interlocking means) 5 pivotally supported by the intermediate beam 1c of the car frame. .
  A shock absorber (drag adding means) 80 is interposed between a pair of left and right fulcrums 5a and 5b that pivotally support each link of the pantograph mechanism 5.
  As a result, the shock absorber 80 is shortened when the vertical distance between the pair of upper and lower cabs 2 and 3 is expanded, and the shock absorber 80 is expanded when the vertical distance is narrowed.
  At this time, the shock absorber 80 is a device similar to that used for automobile suspensions or the like, and uses a viscous force generated when a fluid such as oil or gas passes through an orifice provided in a piston (not shown), and a pantograph mechanism. Add drag to 5
[0055]
  Therefore,This third reference exampleIn the double-deck elevator 500, since the pantograph mechanism 5 cannot be expanded and contracted rapidly, the vertical space between the pair of upper and lower cabs 2 and 3 can be smoothed without giving an impact or generating a large vibration. Can be adjusted.
  Further, as shown in FIG. 8, in the control means 90 for controlling the operation of the conductive motor that drives the pair of upper and lower cabs 2 and 3 in the vertical direction, the difference in weight between the pair of upper and lower cabs 2 and 3 is taken into account. Since the portion for generating the torque command signal based on this becomes unnecessary, the structure can be simplified.
[0056]
  The shock absorber 80 can be interposed between the pair of upper and lower fulcrums 5c and 5d of the pantograph mechanism 5, or between the car chambers 2 and 3 and the intermediate beam 1c of the car frame.
[0057]
  First3Embodiment
  Next, referring to FIG.3The double deck elevator according to the embodiment will be described.
[0058]
  Mentioned aboveThird reference exampleThe double-deck elevator 500 uses a fluid viscous force as a resistance against the vertical displacement of the pair of upper and lower cabs.
  On the other hand, this book3The double deck elevator according to the embodiment uses a frictional force as a resistance against a vertical displacement of a pair of upper and lower cars.
[0059]
  That is, the first shown in FIG.3In the double deck elevator 600 of the embodiment, a friction engagement device 110 that frictionally engages with the brake disk 18 attached to the ball screw 16 is provided.
  The friction engagement device 110 is fixed to the bracket 111 and slides on a lower friction body 112 that slides on the lower surface of the brake disk 18, and is attached to the bracket 111 via a coil spring 113 and slides on the upper surface of the brake disk 18. And an upper friction body 114.
  The magnitude of the frictional force acting on the brake disk 18 can be adjusted by adjusting the magnitude of the pressing force with which the coil spring 113 presses the upper friction body 114 against the upper surface of the brake disk 18.
[0060]
  When adjusting the vertical distance between the pair of upper and lower cabs 2 and 3, the ball screw 16 and the brake disk 18 are rotated together by the electric motor 17.
  At this time, since the frictional damping force is applied to the brake disk 18 by the friction engagement device 110, the brake disk 18, and hence the ball screw 16, cannot start to rotate rapidly.
  Thereby, the vertical space between the pair of upper and lower cabs 2 and 3 can be adjusted smoothly without giving an impact or generating a large vibration.
[0061]
  First4Embodiment
  Next, referring to FIG.ofFirst4The double deck elevator according to the embodiment will be described.
[0062]
  No. mentioned above3The double deck elevator 600 of the embodiment uses a mechanical frictional force as a resistance against the vertical displacement of the pair of upper and lower cabs.
  On the other hand, this book4In the double deck elevator of the embodiment, an electromagnetic force is used as a drag force against the vertical displacement of the pair of upper and lower cabs.
[0063]
  That is, as shown in FIG. 10, the magnet 120 attached to the car frame is disposed near the upper surface of the brake disk 18.
  At this time, since the brake disc 18 is manufactured from a conductive material, when the brake disc 18 rotates integrally with the ball screw 16, an eddy current is generated in the brake disc 18.
  When the brake disk 18 rotates while eddy current is generated, an electromagnetic braking force acts on the brake disk.
[0064]
  When adjusting the vertical distance between the pair of upper and lower cabs 2 and 3, the ball screw 16 and the brake disk 18 are rotated together by the electric motor 17.
  At this time, since an electromagnetic braking force acts on the brake disc 18, the brake disc 18, and hence the ball screw 16, cannot start to rotate rapidly.
  Thereby, the vertical space between the pair of upper and lower cabs 2 and 3 can be adjusted smoothly without giving an impact or generating a large vibration.
[0065]
  As mentioned above, each embodiment of the double deck elevator which concerns on this inventionInAlthough the present invention has been described in detail, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications are possible.
[0066]
【The invention's effect】
  As is apparent from the above description, the present inventionofIn a double deck elevator, when adjusting the vertical direction between a pair of upper and lower cabs provided in the car frame, before the driving means displaces the cab, the weight of the cab or the pair of upper and lower cabs The driving means is controlled to output a driving force having a magnitude corresponding to the weight difference.
  As a result, it is possible to displace the car room in the vertical direction while preventing the car room from being displaced by its own weight. The vertical spacing between the cabs can be adjusted smoothly.
  Further, in the double deck elevator according to the present invention, when adjusting the vertical direction between a pair of upper and lower cabs provided in the car frame, the cab and the lift interlocking means resist the vertical displacement of the cab. Etc.
  Thus, since the cab cannot be displaced suddenly, the vertical interval between the pair of upper and lower cabs can be adjusted smoothly without giving an impact to the cab and causing large vibrations.
[Brief description of the drawings]
FIG. 1 relates to the present invention.First reference exampleThe front view which shows typically a double deck elevator.
FIG. 2 is a diagram according to the present invention.1A front view showing typically a double deck elevator of an embodiment.
FIG. 3 is a block diagram showing control of the double deck elevator shown in FIG. 2;
FIG. 4 is a diagram according to the present invention2The principal part expansion perspective view of the double deck elevator of embodiment.
FIG. 5 is a block diagram showing control of the double deck elevator shown in FIG. 4;
FIG. 6 relates to the present invention.Second reference exampleThe principal part front view of a double deck elevator.
FIG. 7 relates to the present invention.Third reference exampleThe principal part front view of a double deck elevator.
FIG. 8 is a block diagram showing control of the double deck elevator shown in FIG.
FIG. 9 is a diagram according to the present invention3The principal part enlarged front view of the double deck elevator of embodiment.
FIG. 10 is a diagram according to the present invention4The principal part enlarged front view of the double deck elevator of embodiment.
FIG. 11 is a front view of a double deck elevator described in JP-A-10-279231.
FIG. 12 is a flowchart for explaining a control method for the double deck elevator shown in FIG. 11;
FIG. 13 is a perspective view showing a double deck elevator described in JP-A-4-303378.
[Explanation of symbols]
R rope
1 cage
2 Upper cab
3 Lower cab
4 Guide shoe
5 Pantograph mechanism
6 Drive mechanism
6a Ball screw
7 base
8 Drive mechanism
9 Hydraulic supply device
10 Elastic body
11,14 base
12,15 Linear former
13 Hydraulic cylinder
16 Ball screw
17 Electric motor
18 Brake disc
19 Brake device
20 Control means
50 Control means
51 strain gauge
60 Drive mechanism
61 Ball screw
62 Ball screw nut
63 Load cell
80 Shock absorber (Drag adding means)
90 Control means
110 Friction engagement device
120 magnet
100 1stReference exampleDouble deck elevator
200th1Embodiment of double deck elevator
300th2Embodiment of double deck elevator
400Second reference exampleDouble deck elevator
500Third reference exampleDouble deck elevator
600th3Embodiment of double deck elevator
700th4Embodiment of double deck elevator

Claims (5)

A double deck elevator capable of adjusting the vertical distance between a pair of upper and lower cabs provided in a car frame according to the vertical distance between floors on which the cabs are respectively landed,
An ascending / descending interlocking means interposed between the pair of upper and lower car chambers, wherein one of the upper and lower pair of car rooms is interlocked with the raising of either one of the upper and lower car rooms;
Driving means for vertically displacing the pair of upper and lower car chambers with respect to the car frame;
A weight difference measuring means for measuring a weight difference between the pair of upper and lower cages;
Control means for controlling the operation of the drive means,
The ascending and descending interlocking means is a ball screw attached to the car frame and extending in the vertical direction, wherein the direction of the screw of the part that respectively engages with the part that respectively supports the pair of upper and lower car chambers is reversed.
The driving means is a motor that is attached to the car frame and rotationally drives the ball screw in both forward and reverse directions,
Wherein, said prior to displacing the pair of upper and lower cage chambers, controlling the operation of the motor so that the driving force of the magnitude corresponding to the weight difference obtained from the weight difference measuring means said motor output A double-deck elevator characterized by A holding means that can hold the pair of upper and lower car chambers in a vertically displaceable manner with respect to the car frame, and that is controlled by the control means;
The holding means is a brake device attached to the car frame, which is detachably and frictionally engaged with a disc-like brake disk fixed to the ball screw and rotating integrally.
The control means, the motor permits the vertical displacement with respect to the car frame of said pair of upper and lower cage chambers to release the operation of the brake device after outputting the driving force for displacing the pair of upper and lower cage chambers ,
The double-deck elevator according to claim 1 . The double deck elevator according to claim 1 or 2, wherein the weight difference measuring means obtains the weight difference by measuring a stress value generated in the brake disc. A drag addition means for adding a drag force against the vertical displacement of the pair of upper and lower cabs;
4. The double according to claim 2, wherein the drag adding means includes a friction body that slides on a surface of the brake disk, and a coil spring that presses the friction body against the surface. Deck elevator. A drag addition means for adding a drag force against the vertical displacement of the pair of upper and lower cabs;
The double-deck elevator according to claim 2 or 3, wherein the drag addition means is a magnet attached to the car frame that is arranged in the vicinity of the surface of the brake disk and generates eddy currents. .

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