JP2001322771A - Double deck elevator - Google Patents

Abstract

(57) [Problem] To provide a double deck elevator capable of adjusting a vertical interval between a pair of upper and lower cabs without giving an impact to the cab or generating large vibration. SOLUTION: A pair of upper and lower car rooms 2 provided on a car frame 1 are provided.
When adjusting the vertical direction between the three cabs 3, the driving means is so arranged that the hydraulic cylinder 13 of the driving means outputs a driving force having a magnitude corresponding to the weight of the cab 3 to be displaced before displacing the cab 3. Control. Thereby, the cab 3 can be displaced in the vertical direction while preventing the cab 3 from being displaced by its own weight, so that the cab 3 is not shocked and large vibration is not generated. The vertical interval between the pair of upper and lower cages 2 and 3 can be smoothly adjusted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double deck elevator capable of adjusting a vertical interval between a pair of upper and lower cabs provided on a car frame, and more particularly to a double deck elevator without causing an impact to the cab. It relates to an improved double-deck elevator with adjustable spacing.

[0002]

2. Description of the Related Art In recent years, a double-deck elevator having a pair of upper and lower cabs that respectively land on the upper and lower two floors of a building has been developed in order to enhance the vertical transportation force using an elevator in a skyscraper. It is getting attention.

[0003] In recent years, many skyscrapers have a stairwell entrance hall or lobby on the first floor to enhance the design, and the height from the floor to the ceiling on the first floor is higher than that on other floors. Many are set large. Therefore, there has been proposed a double deck elevator in which the vertical interval between a pair of upper and lower cabs can be changed in accordance with the vertical interval between floors to be landed.

For example, in a double deck elevator described in Japanese Patent Application Laid-Open No. 10-279231, FIG.
As shown in FIG. 1, a pair of upper and lower car rooms 2 supported by a car frame 1 suspended by a main rope R,
Both are guided by a guide shoe 4 slidably engaged with a guide rail 1b provided on a vertical beam 1a of the car frame 1 so as to be able to move up and down. In addition, a pair of upper and lower cabs 2, 3
Are connected to each other by a pantograph mechanism 5 in which an intermediate portion in the vertical direction is pivotally supported by an intermediate beam 1c of the car frame 1 and both upper and lower ends are pivotally supported by a pair of upper and lower car rooms 2 and 3, respectively. ing. Further, a drive mechanism 6 having a ball screw 6a rotated by a drive motor (not shown) is interposed between the upper car 2 and the upper beam 1d of the car frame 1. Accordingly, when the ball cage 6 is rotated to lower the upper car 3, the lower car 2 is raised by the action of the pantograph mechanism 5, and when the ball car 6 a is rotated to raise the upper car 3, the lower car 2 is raised by the action of the pantograph mechanism 5. Since the lower car 2 descends, a pair of upper and lower cabs 2,
3 can be freely changed in the vertical direction.

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, in step (hereinafter, referred to as S) 1, when the destination floor of the double deck elevator is determined by the button operation of the passenger who got into the cab, in step S2, the hoist is driven to move the double deck elevator up and down to the destination floor. . At this time, in order to adjust the vertical space between the pair of upper and lower car rooms 2 and 3 in accordance with the destination floor while the double deck elevator is moving up and down, the vertical space between the pair of upper and lower car rooms 2 and 3 in S3. Is calculated, and in step 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 car rooms 2 and 3. Then, S
When it is determined in step 5 that the vertical interval between the pair of upper and lower car cabs 2 and 3 is appropriate, the drive motor of the drive mechanism 6 is stopped in step S6. Then, when it is determined in S7 that the vehicle has arrived at the destination floor, the operation of the hoist is stopped in S8.

On the other hand, in the double deck elevator described in Japanese Patent Application 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 supplies pressure oil from a hydraulic supply device 9 to a driving mechanism 8 interposed between the car room 3 and a base 7. Thus, the vertical movement between the pair of upper and lower cages 2 and 3 can be adjusted.

[0007]

By the way, in the double deck elevator shown in FIG. 10, the ball screw 6a of the drive mechanism 6 is prevented from rotating unless the vertical interval between the pair of upper and lower cabs 2, 3 is adjusted. The brake is applied so that the vertical interval between the pair of upper and lower cabs 2 and 3 does not change. Thereby, a pair of upper and lower cabs 2,
When adjusting the vertical distance between the three, the ball screw 6a
It is necessary to release the brake applied to the ball screw 6a so that the ball screw 6a can rotate freely.

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. Thereby, the ball screw 6 is adjusted to adjust the vertical distance between the pair of upper and lower cages 2 and 3.
As soon as the brake applied to a is released, the ball screw 6a
Rotate, the upper cab 2 is suddenly displaced, giving an impact to the upper cab 2 or causing large vibration. The impact and large vibration generated in the upper cab 2 are transmitted to the lower cab 3 via the pantograph mechanism 5, which gives discomfort to the passengers in the upper and lower cabs 2 and 3. Would.

On the other hand, in the double deck elevator shown in FIG. 13, the hydraulic circuit between the hydraulic supply device 9 and the drive mechanism 8 is controlled by a control valve in order to keep the lower cab 3 at a predetermined vertical position. Is shut off using Thus, when adjusting the vertical interval between the pair of upper and lower car cabs 2 and 3, the control valve must be opened. At this time, if excessive hydraulic oil is supplied from the hydraulic supply device 9 to the drive mechanism 8 when the weight of the lower cab 3 is small, the lower cab 3 rises suddenly, so that the lower cab 3 is raised. 3 or causes a large vibration. Further, when the pressure of the pressure oil supplied from the hydraulic pressure supply device 9 to the drive mechanism 8 is suddenly reduced in a case where the weight of the lower cab 3 is large, the lower cab 3 suddenly descends. An impact is applied to the cab 3 or a large vibration is generated.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art, and when adjusting the vertical distance between a pair of upper and lower cabs, a shock is applied to the cab or a large vibration is generated. An object of the present invention is to provide a double-deck elevator that does not have to be turned off.

[0011]

According to a first aspect of the present invention for solving the above-mentioned problems, the above-mentioned cabs are respectively set on the floor of a pair of upper and lower cabs provided on a car frame. A double-deck elevator that can be adjusted in accordance with the vertical spacing between floors, a driving means for vertically displacing the cab with respect to the car frame, and a weight measuring means for measuring the weight of the cab And control means for controlling the operation of the driving means. And the control means, before displacing the cab, the driving means so that the driving means outputs a driving force of a magnitude corresponding to the weight of the cab obtained from the weight measuring means. Control the operation.

That is, in the double-deck elevator according to the first aspect, before the cab is displaced, the driving means outputs a driving force having a magnitude corresponding to the weight of the cab to be displaced. At this time, the magnitude of the driving force output by the driving means can be obtained by adding the driving force required to displace the cab to the driving force that is proportional to the weight of the cab. Further, after the weight of the cab and the driving force are once balanced, the cab can be displaced by gradually increasing or decreasing the driving force. This allows the cab to be displaced in the vertical direction while preventing the cab from being displaced by its own weight,
The vertical interval between the pair of upper and lower cabs can be smoothly adjusted without giving an impact to the cab or generating a large vibration. The control means stores a map representing the relationship between the weight of the cab and the driving force to be output by the drive means in the storage means, and stores the map based on the cab weight obtained from the weight measurement means. By reference, the magnitude of the driving force to be output by the driving means can be determined.

According to a second aspect of the present invention for solving the above-mentioned problems, a vertical interval between a pair of upper and lower cabs provided on a car frame is set between floors on which the cabs respectively land. A double-deck elevator that can be adjusted in accordance with a vertical interval, and is interposed between the pair of upper and lower cabs, wherein one of the pair of upper and lower cabs is lowered in conjunction with the rise of one of the upper and lower cabs. Raising and lowering interlocking means, a driving means for vertically displacing the car room with respect to the car frame, a weight difference measuring means for measuring a weight difference between the pair of upper and lower car rooms, and an operation of the driving means. And control means for controlling. The control means controls the operation of the driving means so that the driving means outputs a driving force having a magnitude corresponding to the weight difference obtained from the weight difference measuring means before displacing the car room. I do.

That is, in the double deck elevator according to the present invention, the driving means outputs a driving force of a magnitude corresponding to a weight difference between the pair of upper and lower cabs before displacing the cab. Control. At this time, the magnitude of the driving force output by the driving means may be the sum of the driving force required to displace the cab and the driving force that is proportional to the weight difference between the cabs. it can. Further, after the weight difference between the cabs and the driving force are once balanced, the cab can be displaced by gradually increasing or decreasing the driving force. This prevents the pair of upper and lower cabs from being displaced by their own weight while displacing the cabs in the up-down direction, thereby giving a shock to the cab or causing large vibrations. In addition, the vertical interval 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 stores the map in the weight difference obtained from the weight difference measuring means. By referring to this map based on this, it is possible to determine the magnitude of the driving force to be output by the driving means.

According to a third aspect of the present invention, there is provided a double deck elevator according to the first or second aspect, wherein the cab is vertically displaced with respect to the car frame. It is further provided with holding means which can be held unavoidably and whose operation is controlled by the control means. Then, the control means releases the holding of the cab by the holding means after the driving means outputs a driving force for displacing the cab.

That is, in the double deck elevator according to the third aspect, the holding of the cab is released after the driving means outputs a driving force according to the weight of the cab or the weight difference between the pair of upper and lower cabs. Therefore, as soon as the cab is released from holding, the cab will not be displaced in the vertical direction due to its own weight, and therefore, will not be impacted or cause large vibrations, and The vertical spacing between the car cabs can be smoothly adjusted.

The weight of the cab can be measured based on the amount of deformation and the spring constant of the elastic body elastically supporting the cab, or can be directly measured using a load cell.

Further, the weight difference between the pair of upper and lower cabs can be obtained by measuring the weight of the pair of upper and lower cabs individually using the above-described means, and then calculating the difference. The weight difference between the pair of upper and lower cabs causes an external force applied to the lifting interlocking means interposed between the pair of upper and lower cabs, for example, a bending moment acting on each link in a pantograph mechanism, and acting on a ball screw. The torsional torque and the like can be obtained by measuring each using a strain gauge. In the case where a holding means for holding the car room so as not to be displaced in the vertical direction, for example, a disk brake is provided, it can be obtained by measuring the torsional torque acting on the brake disk using a strain gauge. Further, the weight difference between the pair of upper and lower cabs can be obtained by measuring the reaction force received by the driving means from the cab using, for example, a load cell or the like interposed between the driving means and the car frame. .

According to a tenth aspect of the present invention for solving the above-mentioned problems, a vertical space between a pair of upper and lower cabs provided in a car frame is set between floors on which the cabs respectively land. A double-deck elevator which can be adjusted in accordance with a vertical interval, and further comprising a drag adding means for adding a drag against a vertical displacement of the cab.

That is, in the double deck elevator according to the tenth aspect, when the cab is displaced in the vertical direction, a drag force against the displacement is added, so that the cab is not suddenly displaced. Therefore, the vertical interval between the pair of upper and lower cabs can be smoothly adjusted without giving an impact to the cab or generating large vibration. At this time, a drag can be added to the cab, the driving means, and the elevating / lowering interlocking means. Further, as the added drag, for example, a frictional force obtained by pressing a friction piece against a disc brake that holds the cab in a vertically displaceable manner can be used. Further, a guide shoe for guiding the vertical displacement of the car room relative to the car frame may be used. In addition, an electromagnetic force obtained by generating an eddy current in the disk brake by arranging a magnet near the disk brake can be used. Further, the viscosity of a fluid such as a liquid or gas can be used. The shock absorber or the like using the viscosity of the fluid is interposed between a car frame and a car room, or between two points at which a vertically interlocking mechanism interposed between a pair of upper and lower car rooms is relatively displaced. can do.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A double deck elevator according to each embodiment of the present invention will be described below in detail with reference to FIGS. In the following description, the same parts as those of the above-described conventional double deck elevator are denoted by the same reference numerals, and the description thereof will be omitted.

First Embodiment First, a double deck elevator according to a first embodiment of the present invention will be described with reference to FIG.

The double deck elevator 10 shown in FIG.
0 is the car frame 1 suspended by the main rope R
And a pair of upper and lower cabs 2 and 3 are provided. The upper car room 2 is elastically supported by an intermediate beam 1 c of the car frame 1 via an elastic body 10. On the other hand, the lower cab 3
Is elastically supported via an elastic body 10 on a base 11 which can be displaced in the vertical direction with respect to the car frame 1.

A linear former (weight measuring means) 12 is interposed between the lower cab 3 and the base 11. Thereby, the spring constant of the elastic body 10 and the linear former 1
The weight of the lower cab 3 can be measured by the amount of vertical displacement of the lower cab 3 with respect to the base 11 measured by 2.

The base 11 includes a pair of left and right hydraulic cylinders 13.
It is supported on the lower beam 1e by the car frame 1. Pressure oil is supplied to the hydraulic cylinder 13 from a pressure oil supply device as shown in FIG.
The vertical interval between the pair of upper and lower car cabs 2 and 3 is adjusted by raising and lowering the cab.

To keep the lower car room 3 at a predetermined vertical position with respect to the car frame 1, a pair of left and right hydraulic cylinders 1
The control valve (holding means) provided in the middle of the hydraulic circuit for supplying the pressure oil to 3 is closed to prevent the pair of left and right hydraulic cylinders 13 from expanding and contracting. Thus, when changing the vertical position of the lower car room 3, it is necessary to open the control valve so that the pair of left and right hydraulic cylinders 13 can expand and contract.

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
The control is performed 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 room 3 in the vertical direction is the sum of the driving force required to displace the car room 3 and the driving force that is proportional to the weight of the car room 3. It was made. And a pair of left and right hydraulic cylinders 1
After controlling the pressure of the pressure oil supplied to 3 as described above,
The control valve is opened to supply pressure oil.

Therefore, when the control valve is opened to change the vertical position of the lower cab 3, the weight of the lower cab 3 and the pair of left and right hydraulic cylinders 13 move the cab 3 vertically. And the driving force to be supported is substantially balanced. Then, since the pair of left and right hydraulic cylinders 13 is expanded and contracted in a state where both are almost balanced, the lower cab 3
The vertical interval between the pair of upper and lower car rooms 2 and 3 can be smoothly adjusted without giving an impact or generating a large vibration.

Second Embodiment Next, a double deck elevator according to a second embodiment of the present invention will be described with reference to FIG.

The double-deck elevator 200 shown in FIGS. 2 and 3 is provided with a pair of upper and lower cages 2 and 3 provided on a cage frame 1 suspended by a main rope R so as to be relatively displaceable in a vertical direction. is there. The upper cab 2 is elastically supported by a base 14, and the lower cab 3 is elastically supported by an elastic body 10 with respect to a base 11, respectively. A linear former (weight measuring means) 15 is provided between the upper cab 2 and the base 14, and a linear former (weight measuring means) 13 is provided between the lower cab 3 and the base 11. Are interposed respectively. Thus, the weights of the cabs 2 and 3 are individually determined based on the spring constant of the elastic body 10 and the amount of vertical displacement of the cabs 2 and 3 with respect to the bases 14 and 11 measured by the linear formers 15 and 12. Can be measured.

The bases 14 and 11 are mounted on the car frame 1 and extend in the vertical direction with ball screws (elevating and interlocking means) 16
, Respectively, via ball screw nuts (not shown). On the other hand, the direction of the ball screw 16 is reversed in the upper half 16a and the lower half 16b as illustrated. Thus, when the ball screw 16 is rotated in both the forward and reverse directions using the electric motor (drive means) 17 mounted on the upper portion of the car frame 1, the upper and lower pairs of car chambers 2 and 3 are moved closer to and away from each other in the up and down direction. Or can be.

A disk-shaped brake disk 18 is fixed to the upper part of the ball screw 16 and the car frame 1
A brake device (holding means) 19 which is engaged with a brake disk 18 so as to be able to freely engage and disengage with the brake disk 18 is attached. As a result, when the brake disk 18 is sandwiched by the brake device 19, the ball screw 16 cannot be rotated. Therefore, the pair of upper and lower car rooms 2 and 3 can be held in the car frame 1 so as not to be displaced in the vertical direction.

Next, control means for controlling the operation of the electric motor 17 and the brake device 19 will be described with reference to FIG.

The control means 20 shown in FIG. 3 has a target speed command section 21 for instructing a target rotation speed of the electric motor 17. The target speed command unit 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 gets into the cab arrives at the destination floor designated by button operation. , A target rotation speed of the electric motor 17 is commanded. On the other hand, a 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 a speed conversion processing unit 23. Then, 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 a proportional element 27, an integral element 28, and a proportional element 29, and then the electric motor torque control unit 30 Is output as a torque command signal 31 for

At this time, in the second embodiment, a torque command signal 31 output to the electric motor torque control unit 30
Then, by adding the torque command signal 33 output from the cab weight difference measuring unit (weight difference measuring means) 32, the magnitude of the driving torque for rotating the ball screw 16 by the electric motor 17 is corrected. ing.

That is, in the upper car weight measuring section (weight measuring means) 34 of the car cabin weight difference measuring section 32, the spring constant of the elastic body 10 elastically supporting the upper car chamber 2 is determined by:
Upper cab 2 measured by linear former 15
Of the upper cab 2 is measured from the amount of vertical displacement with respect to the base 14. Similarly, in the lower car weight measuring section (weight measuring means) 35, the spring constant of the elastic body 10 elastically supporting the lower car room 3 and the lower car room 3 measured by the linear former 12. The weight of the lower cab 3 is measured from the vertical displacement of the base 11 with respect to the base 11.

The weight of the upper car room 2 obtained from the upper car weight measuring section 34 is converted into a torque command signal for the electric motor 17 in the upper car weight conversion processing section 36.
At this time, the torque command signal output from the upper car weight conversion processing unit 36 outputs a torque that cancels the torque that causes the upper car room 2 to rotate the ball screw 16 in the forward direction due to its weight. Is output.

Similarly, the weight of the lower car room 3 obtained from the lower car weight measuring section 35 is converted to the lower car weight conversion processing section 37.
Is converted into a torque command signal for the electric motor 17. At this time, the torque command signal output from the lower car weight conversion processing unit 37 outputs a torque that cancels the torque that causes the lower car room 3 to rotate the ball screw 16 in the reverse direction due to the weight of the electric motor. 17 instructs to output.

Thus, the cab weight difference measuring section 32, which is obtained by subtracting the torque command signal output from the lower car weight conversion processing section 37 from the torque command signal output from the upper car weight conversion processing section 36, The torque command signal 33 to be output is an electric torque that is necessary to prevent the ball screw 16 from being rotated in either the forward or reverse direction due to the weight difference between the pair of upper and lower cages 2 and 3. Motor 17
Is output.

That is, in the double-deck elevator 200 according to the second embodiment, the driving torque output by the electric motor 17 for driving the ball screw 16 to rotate is:
A torque component for canceling rotation of the ball screw 16 in either the forward or reverse direction due to a weight difference between the pair of upper and lower cabs 2 and 3 and a vertical interval between the pair of upper and lower cabs 2 and 3 are adjusted. In this case, a torque component for rotating the ball screw 16 is used.

Further, the control means 20 causes the electric motor 17 to output the drive torque determined as described above,
The operation of the brake device 19 is released to allow the pair of upper and lower cabs 2 and 3 to be vertically displaced with respect to the car frame 1.

Therefore, in the double deck elevator 200 according to the second embodiment, the brake device 1
Even when 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 car cabs 2 and 3. The car rooms 2 and 3 are not suddenly displaced vertically. Thereby, according to the double-deck elevator 200 of the second embodiment, the upper and lower pair of cabs 2 and 3 can be moved between the pair of upper and lower cabs 2 and 3 without giving an impact to the upper and lower pair of cabs 2 and 3. The vertical spacing can be adjusted smoothly.

Third Embodiment Next, a double-deck elevator according to a third embodiment of the present invention will be described with reference to FIG.

In the above-described second embodiment, the weight of the pair of upper and lower cabs 2 and 3 is measured individually,
The weight difference between the pair of upper and lower cages 2, 3 was calculated. On the other hand, the third embodiment has a pair of upper and lower cabs 2 and 3.
The difference between the weights can be measured directly.

For this reason, in the double deck elevator 300 according to the third embodiment, the strain gauge 51 is attached to the brake disk 18 as shown in FIG. 4, and the stress value generated in the brake disk 18 is measured.

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 cages 2 and 3. At this time, if the brake disk 18 is held by the brake device 19 and the ball screw 16 is held so as not to rotate, a stress proportional to the weight difference between the pair of upper and lower cages 2 and 3 is generated in the brake disk 18. Therefore, by measuring the stress value generated in the brake disk 18, the pair of upper and lower cabs 2, 3
The weight difference between them can be measured directly.

In the control means 50 for controlling the operation of the drive motor 17, as shown in FIG. 5, the weight difference between the pair of upper and lower cages 2, 3 obtained from a load sensor such as a strain gauge 51 is determined. The converted signal is converted into a torque command signal 53 for the electric motor 17 by the conversion processing unit 52. Then, the torque command signal 5 output from the conversion processing unit 52
3 is added to the torque command signal 31 input to the electric motor torque control unit 30.

The weight difference between the pair of upper and lower car cabs 2 and 3 is directly measured by measuring the value of the stress generated in the ball screw 16 instead of measuring the value of the stress generated in the brake disk 18. Can also.

Fourth Embodiment Next, a double deck elevator according to a fourth embodiment of the present invention will be described with reference to FIG.

In the third embodiment described above, a double deck elevator in which the vertical spacing between a pair of upper and lower cabs 2 and 3 is adjusted using a ball screw 16 is described. The method for directly measuring the difference in weight of the samples was shown. On the other hand, in the fourth embodiment, the weight between the pair of upper and lower car rooms 2 and 3 is about a double deck elevator in which the vertical interval between the pair of upper and lower car rooms 2 and 3 is adjusted using the pantograph mechanism 5. A method for directly measuring the difference will be described.

In the double deck elevator 400 of the fourth embodiment shown in FIG. 6, the intermediate beam 1c of the car frame 1
The pair of upper and lower car cabs 2 and 3 are connected to each other by a pantograph mechanism 5 which is pivotally supported by the car. A drive mechanism 60 for vertically displacing the car room 3 is interposed between the lower car room 3 and the lower beam 1e of the car frame 1.

The drive mechanism 60 is configured to rotate a ball screw nut 62 screwed with a ball screw 61 suspended from the lower car room 3 by a drive motor (not shown). 63
And is attached to the lower beam 1e of the car frame 1 via.

Thus, when the upper cab 2 is heavier, an upward external force acts on the lower cab 3 by the action of the pantograph mechanism 5, so that the load cell 63
, A vertical compressive force acts via a ball screw 61 and a ball screw nut 62. On the other hand, when the lower cab 3 is heavier, the lower cab 3 tends to descend. Therefore, a vertical pulling force is applied to the load cell 63 via the ball screw 61 and the ball screw nut 62. Works.

Therefore, the load cell 6 of the drive mechanism 60
By measuring the magnitude of the external force acting on the upper and lower cages 3, the weight difference between the pair of upper and lower cages 2 and 3 can be directly measured. The driving mechanism 60 controls the magnitude of the driving force applied to the lower cab 3 based on the weight difference between the pair of upper and lower cabs 2 and 3 which is directly measured, thereby giving an impact or a large impact. The vertical interval between the pair of upper and lower car cabs 2 and 3 can be smoothly adjusted without causing vibration.

Fifth Embodiment Next, a double deck elevator according to a fifth embodiment of the present invention will be described with reference to FIGS.

Each of the double deck elevators in the first to fourth embodiments described above has a pair of upper and lower cabs 2,
By controlling the magnitude of the driving force for displacing the upper and lower cages 3 in the vertical direction, the vertical interval between the pair of upper and lower cages 2 and 3 is smoothly adjusted. On the other hand, the double-deck elevator 500 of the fifth embodiment adds a drag force against the vertical displacement of the pair of upper and lower car rooms 2 and 3 so that the pair of upper and lower car rooms 2 and 3 can be connected to each other. The vertical interval is adjusted smoothly.

That is, in the double deck elevator 500 shown in FIG. 7, a pair of upper and lower car rooms 2 and 3 are connected to each other by a pantograph mechanism (elevating and interlocking means) 5 which is pivotally supported by the intermediate beam 1c of the car frame. Have been. A shock absorber (drag adding means) 80 is interposed between a pair of left and right fulcrums 5a and 5b that support each link of the pantograph mechanism 5. This allows
The shock absorber 80 is shortened when the vertical interval between the pair of upper and lower cages 2 and 3 is widened, and the shock absorber 80 is extended when the vertical interval is narrowed. At this time, the shock absorber 80 is a device similar to that used for a suspension of an automobile or the like.
Drag is applied to the pantograph mechanism 5 by using a viscous force generated when a fluid such as oil or gas passes through an orifice provided in a piston (not shown).

Therefore, in the double deck elevator 500 of the fifth embodiment, since the pantograph mechanism 5 cannot expand and contract rapidly, the pair of upper and lower cabs 2 is not impacted and large vibration is not generated. , 3 can be smoothly adjusted. Further, as shown in FIG. 8, in the control means 90 for controlling the operation of the electric conduction motor for driving the pair of upper and lower car rooms 2 and 3 in the vertical direction, the weight difference between the pair of upper and lower car rooms 2 and 3 is reduced. Since a portion for generating a torque command signal based on this is unnecessary, the structure can be simplified.

The shock absorber 80 can be interposed between a pair of upper and lower fulcrums 5c and 5d of the pantograph mechanism 5, or between the cabs 2, 3 and the intermediate beam 1c of the car frame.

Sixth Embodiment Next, a double-deck elevator according to a sixth embodiment of the present invention will be described with reference to FIG.

The double-deck elevator 500 of the fifth embodiment described above uses a fluid viscous force as a resistance against a vertical displacement of a pair of upper and lower cabs. On the other hand, the double deck elevator according to the sixth embodiment uses a frictional force as a resistance to the vertical displacement of the pair of upper and lower cars.

That is, in the double-deck elevator 600 of the sixth embodiment shown in FIG.
6 is provided with a friction engagement device 110 that frictionally engages with the brake disk 18 attached to the brake disk 6. The friction engagement device 110 includes a lower friction member 112 fixed to the bracket 111 and sliding on the lower surface of the brake disk 18, and a lower friction member 112 attached to the bracket 111 via a coil spring 113 and sliding on the upper surface of the brake disk 18. And the upper friction body 114 which is formed. By adjusting the magnitude of the pressing force by which the coil spring 113 presses the upper friction body 114 against the upper surface of the brake disc 18, the magnitude of the frictional force acting on the brake disc 18 can be adjusted.

When adjusting the vertical distance between the pair of upper and lower cages 2 and 3, the ball screw 16 and the brake disk 18 are integrally rotated by the electric motor 17. At this time, since the friction damping force is applied to the brake disk 18 by the friction engagement device 110, the brake disk 18 and therefore the ball screw 16 cannot start rotating rapidly. This makes it possible to smoothly adjust the vertical interval between the pair of upper and lower car rooms 2 and 3 without giving an impact or generating a large vibration.

Seventh Embodiment Next, a double-deck elevator according to a seventh embodiment of the present invention will be described with reference to FIG.

The double deck elevator 600 according to the sixth embodiment described above uses mechanical frictional force as a resistance to the vertical displacement of a pair of upper and lower cabs. On the other hand, in the double deck elevator according to the seventh embodiment, an electromagnetic force is used as a resistance against the vertical displacement of the pair of upper and lower cabs.

That is, as shown in FIG. 10, a magnet 120 attached to a car frame is provided near the upper surface of the brake disk 18. At this time, since the brake disk 18 is made of a conductive material, when the brake disk 18 rotates integrally with the ball screw 16, an eddy current is generated in the brake disk 18. When the brake disk 18 rotates in a state where an eddy current is generated, an electromagnetic braking force acts on the brake disk.

When adjusting the vertical interval between the pair of upper and lower cages 2, 3, the ball screw 16 and the brake disk 18 are integrally rotated by the electric motor 17. At this time, since an electromagnetic braking force acts on the brake disk 18, the brake disk 18 and therefore the ball screw 16 cannot start rotating rapidly. This makes it possible to smoothly adjust the vertical interval between the pair of upper and lower car rooms 2 and 3 without giving an impact or generating a large vibration.

As described above, each embodiment of the double deck elevator according to the present invention has been described in detail. However, it is needless to say that the present invention is not limited to the above-described embodiment, and various modifications are possible. For example, in the double deck elevators of the above-described first to fourth embodiments,
The drag adding means described in the fifth to seventh embodiments can be combined.

[0069]

As is apparent from the above description, in the double-deck elevator according to the present invention, when adjusting the vertical direction between a pair of upper and lower cabs provided on the car frame, the driving means controls the cabs. Before the displacement, the driving means outputs a driving force having a magnitude corresponding to the weight of the cab to be displaced or the weight difference between the pair of upper and lower cabs. As a result, the cab can be displaced in the vertical direction while preventing the cab from being displaced by its own weight. The vertical spacing between the cabs can be smoothly adjusted. Further, in the double-deck elevator according to the present invention, when adjusting the vertical direction between the pair of upper and lower cabs provided on the car frame, the drag force against the vertical displacement of the cab is adjusted to the cab or the elevator interlocking means. And so on. As a result, since the cab cannot be rapidly displaced, the vertical interval between the pair of upper and lower cabs can be smoothly adjusted without giving an impact to the cab or causing large vibration.

[Brief description of the drawings]

FIG. 1 is a front view schematically showing a double-deck elevator according to a first embodiment of the present invention.

FIG. 2 is a front view schematically showing a double deck elevator according to a second embodiment of the present invention.

FIG. 3 is a block diagram showing control of the double deck elevator shown in FIG. 2;

FIG. 4 is an enlarged perspective view of a main part of a double deck elevator according to a third embodiment of the present invention.

FIG. 5 is a block diagram showing control of the double deck elevator shown in FIG. 4;

FIG. 6 is a front view of a main part of a double deck elevator according to a fourth embodiment of the present invention.

FIG. 7 is a front view of a main part of a double deck elevator according to a fifth embodiment of the present invention.

FIG. 8 is a block diagram showing control of the double deck elevator shown in FIG.

FIG. 9 is an enlarged front view of a main part of a double deck elevator according to a sixth embodiment of the present invention.

FIG. 10 is an enlarged front view of a main part of a double deck elevator according to a seventh embodiment of the present invention.

FIG. 11 is a front view of a double-deck elevator described in Japanese Patent Application Laid-Open No. 10-279231.

FIG. 12 is a flowchart illustrating a control method of the double deck elevator shown in FIG. 11;

FIG. 13 is a perspective view showing a double-deck elevator described in Japanese Patent Application Laid-Open No. 4-303378.

[Explanation of symbols]

 R Rope 1 Car frame 2 Upper car room 3 Lower car room 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 disk 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 Engaging device 120 Magnet 100 Double-deck elevator of the first embodiment 200 Double-deck elevator of the second embodiment 300 Double-deck elevator of the third embodiment 400 Double-deck elevator of the fourth embodiment 500 Fifth embodiment Double-deck elevator 600 double-deck elevator double deck elevator 700 seventh embodiment of the sixth embodiment

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Kazuhiko Takasaki 1 Toshiba-cho, Fuchu-shi, Tokyo F-term in the Fuchu Plant of Toshiba Corporation (reference) 3F002 AA02 CA02 DA07 3F306 CA10

Claims (13)

[Claims] 1. A double-deck elevator in which a vertical space between a pair of upper and lower cabs provided on a car frame can be adjusted in accordance with a vertical space between floors on which the cabs respectively land, Driving means for vertically displacing the room with respect to the car frame, Weight measuring means for measuring the weight of the car room, and Control means for controlling the operation of the driving means, The control means, Before displacing the cab, controlling the operation of the driving means so that the driving means outputs a driving force of a magnitude corresponding to the weight of the cab obtained from the weight measuring means, Features a double deck elevator. 2. A double-deck elevator in which a vertical space between a pair of upper and lower cabs provided on a car frame can be adjusted in accordance with a vertical space between floors on which the cabs respectively land, Elevating and lowering interlocking means interposed between the pair of upper and lower cabs, which lowers one of the cabs in conjunction with the ascent of one of the pair of cabs, and vertically moving the cab with respect to the car frame. A driving means for displacing the cab, a weight difference measuring means for measuring a weight difference between the pair of upper and lower cabs, and a control means for controlling the operation of the driving means. A double-deck elevator, wherein, before displacing, the operation of the driving means is controlled such that the driving means outputs a driving force having a magnitude corresponding to the weight difference obtained from the weight difference measuring means. . 3. The vehicle further comprises holding means capable of holding the car room with respect to the car frame so as not to be displaceable in a vertical direction, and the operation of which is controlled by the control means. 3. The cab release by the holding means after the means outputs a driving force for displacing the cab.
Double-deck elevator as described in. 4. The weight difference measuring means according to claim 2, wherein said weight difference measuring means obtains said weight difference based on the weight obtained from the weight measuring means for measuring the weight of said pair of upper and lower cabs. Double-deck elevator as described in. 5. The weight difference measuring means according to claim 2, wherein the weight difference measuring means measures the weight difference based on an external force applied to the lifting interlocking means from the pair of upper and lower cabs. Double deck elevator. 6. The weight difference measuring means according to claim 3, wherein said weight difference measuring means measures said weight difference based on a reaction force received when said holding means holds said car room to said car frame. Double deck elevator. 7. The double deck elevator according to claim 2, wherein said weight difference measuring means measures said weight difference based on a reaction force received from said car by said driving means. 8. The vehicle of claim 1, wherein the weight measuring means measures the weight of the cab based on a deformation amount of an elastic body elastically supporting the cab. The described double-deck elevator. 9. The double deck elevator according to claim 1, wherein the weight measuring means measures the weight of the cab using a load cell. 10. A double-deck elevator wherein a vertical space between a pair of upper and lower cabs provided on a car frame can be adjusted in accordance with a vertical space between floors on which the cabs respectively land, A double-deck elevator comprising a drag adding means for adding a drag against a vertical displacement of a room. 11. The double deck elevator according to claim 10, wherein said drag adding means adds a fluid viscous force as said drag. 12. The double deck elevator according to claim 10, wherein said drag adding means adds a frictional force as said drag. 13. The double deck elevator according to claim 10, wherein said drag applying means adds an electromagnetic force as said drag.