WO2020174746A1

WO2020174746A1 - Multi-car elevator

Info

Publication number: WO2020174746A1
Application number: PCT/JP2019/041770
Authority: WO
Inventors: 森　和久; 大沼　直人; 洋平松本; 孝道星野; 勇来齊藤; 利治松熊
Original assignee: 株式会社日立製作所
Priority date: 2019-02-27
Filing date: 2019-10-24
Publication date: 2020-09-03
Also published as: CN113396117A; JP2020138830A; CN113396117B

Abstract

This multi-car elevator is provided with a plurality of cars, a distance sensor, and a determination unit. The distance sensor measures the distance between each of the cars and a to-be-detected object provided on a movement path. The determination unit detects the speed at which the movement direction of the car changes from a first direction to a second direction, on the basis of distance information measured by the distance sensor.

Description

\¥0 2020/174746 1 ((17) 2019/041770 Clarification

Title of invention: Multi-Car Elevator

Technical field

[0001] The present invention relates to a multi-car elevator in which a plurality of cars move in a moving path.

Background technology

[0002] In recent years, a multi-car elevator has been proposed in which a plurality of cars move in one moving path. A conventional multi-car elevator of this type is, for example, one described in Patent Document 1.

[0003]In addition, Patent Document 1 discloses an electrical equipment including an acoustic signal conductor that is installed along a hoistway and propagates an acoustic signal, and a leaky coaxial cable that is installed along the hoistway and receives a radio signal. The beta is listed. This elevator also detects the acoustic signal and converts it into an electrical signal, a signal output antenna that transmits a radio signal to the leaky coaxial cable, and an acoustic signal from one end of the acoustic signal conductor. And a signal input device for transmitting. Then, in the technique described in Patent Document 1, the position and speed of the car are detected.

Prior art documents

Patent literature

[0004] Patent Document 1: Japanese Unexamined Patent Publication No. 2 0 0 8 _ 1 1 0 8 4 2

Summary of the invention

Problems to be Solved by the Invention

However, the technique described in Patent Document 1 does not detect the speed of the car at the point where the car reverses from upward movement to downward movement. Therefore, there is a problem that the speed of the car of the car cannot be detected when the moving direction of the car changes.

[0006] An object of the present invention is to provide a multi-car elevator capable of detecting the speed of a car when the moving direction changes, in consideration of the above problems. 〇 2020/174746 2 卩 (: 171? 2019 /041770 Means to solve the problem

[0007] In order to solve the above problems and to achieve the object, a multi-car elevator has a plurality of movable units in the same moving path in a first direction and a second direction intersecting the first direction. It is equipped with a car, a distance sensor, and a determination unit. The distance sensor is installed in the car and measures the distance between the object to be detected and the car provided on the moving path. The determination unit detects the speed at which the moving direction of the car changes from the first direction to the second direction based on the distance information measured by the distance sensor. Effect of the invention

[0008] According to the multi-car elevator with the above configuration, it is possible to accurately detect the position of the car when the moving direction changes.

Brief description of the drawings

[0009] [Fig. 1] Fig. 1 is a schematic configuration diagram showing a multi-car elevator according to a first embodiment.

[Fig. 2] Fig. 2 is an explanatory view showing a configuration of a car and a reversing section in the multi-car elevator according to the first embodiment.

FIG. 3 is a block diagram showing a control system provided in the multi-car elevator according to the first embodiment.

[FIG. 4] A block diagram showing a configuration of a determination unit in the multi-car elevator according to the first embodiment.

FIG. 5 is a block diagram showing the configuration of a drive control unit in the multi-car elevator according to the first embodiment.

FIG. 6 is a flow chart showing the reversing operation of the car in the multi-car elevator according to the first embodiment.

FIG. 7 is an explanatory diagram showing a car reversing operation in the multi-car elevator overnight according to the first embodiment.

FIG. 8 is an explanatory diagram showing a car reversing operation in the multi-car elevator according to the first embodiment.

[Fig. 9] Car cage in a multi-car elevator according to the first embodiment 〇 2020/174746 3 (:171? 2019 /041770

FIG. 6 is an explanatory view showing the inversion operation of FIG.

FIG. 10 is an explanatory diagram showing a method of calculating the speed at the time of reversing operation of the car in the multi-car elevator according to the first embodiment.

FIG. 11 is a schematic configuration diagram showing a multi-car elevator according to a second embodiment.

[FIG. 12] A plan view showing a multi-car elevator according to a second embodiment.

FIG. 13 is a schematic configuration diagram showing a multi-car elevator according to a third embodiment.

MODE FOR CARRYING OUT THE INVENTION

[0010] Hereinafter, a multi-car elevator according to an embodiment will be described with reference to FIGS.

This will be explained with reference to 1 3. In each figure, common members are designated by the same reference numerals.

[001 1] 1. Example of first embodiment

1 — 1 .Multi-Car Elevator Configuration Example

First, the configuration of the multi-elevator system according to the first embodiment (hereinafter referred to as “this example”) will be described with reference to FIGS. 1 and 2.

FIG. 1 is a schematic configuration diagram showing a multi-car elevator in this example.

[0012] The multi-car elevator 1 shown in FIG. 1 is an elevator overnight in which a plurality of cars 10 move in a moving path 100 formed in a building structure. A plurality of cars 10 can be stopped so that they can be stopped at a boarding/alighting place 120 provided on each floor of the building structure.

[0013] The multi-car elevator 1 has a plurality of pairs of cars (3 pairs in this example) for carrying people and luggage, namely, 108, 10 and 100, and 1 and 8, 10 cars. , A drive control unit 6 for controlling 100 operation. In addition, the multi-car elevator _ 1 includes a first drive pulley 2, a second drive pulley 3, a first lower pulley 4, a second lower pulley 5, a first main opening 8, and a second main pulley 8. It has a main mouth 9 and. 〇 2020/174746 4 (:171? 2019 /041770

[0014] The moving path 100 is an ascending path 10.8 showing the first moving path in which the car 10 moves up and down, and a descending path 10.00 showing the second moving path in which the car 10 moves downward. There is a pit. The ascending path 100 and the descending path 100 are adjacent to each other in the horizontal direction which is the second direction orthogonal to the vertical direction which is the first direction. Hereinafter, the vertical direction will be referred to as the first direction, and the horizontal direction intersecting the vertical direction will be referred to as the second direction.

[0015]Furthermore, in the first direction upper ends of the ascending path 1008 and the descending path 100m in the moving path 100, the direction of the moving direction of the car 10 is reversed from ascending to descending. A first inversion path 1 0 0 <3 is provided. In addition, at the lower end of the ascending road 100 8 and the descending road 100 0 in the moving path 100 in the first direction, the moving direction of the car 10 reverses from descending to ascending. 2 Inversion path 100 0 0 is provided.

[0016] A pair of cars 108, 108 in the plurality of cars 10 are connected to the first main port _8 and the second main port -9. The first main opening 8 and the second main opening 9 are formed in an endless shape with both ends connected. The car 108 is connected to the first main mouth loop 8 via the first connecting portion 11 and is connected to the second main mouth loop 9 via the second connecting portion 12.

[0017] The first main rope 8 is mounted on a first drive pulley 2 showing an example of a drive unit and a first lower pulley 4. The first drive pulley 2 is installed on the first reversing path 100, which is the upper part of the moving path 100 in the first direction, and the first lower pulley 4 is installed on the first path in the moving path 100. It is installed in the second inversion path 100 0 0, which is the lower part of the direction.

Further, the second main rope 9 is mounted on a second drive pulley 3 showing an example of a drive unit and a second lower pulley 5. The second drive pulley 3 is installed in the first reversing path 100, which is the upper part of the moving path 100 in the first direction, and the second lower pulley 5 is installed in the moving path 100. It is installed at the 100th second inversion path, which is the lower part of the first direction. The pair of cars 108, 108 are arranged in symmetrical positions so as to function as counterweights for each other while holding the first main mouth loop 8 and the second main rope 9. ing. 〇 2020/174746 5 卩 (: 171? 2019 /041770

[0019] Three sets of the first main mouth group 8 and the second main mouth group 9 are provided in accordance with the pair of the car 10. There are also three sets of the first drive pulley 2, the second drive pulley 3, the first lower pulley 4 and the second lower pulley 5 corresponding to the pairs of the car 10.

The three sets of the first drive pulley 2 and the second drive pulley 3 are respectively connected to the three loop controllers 78, 7 and 70 provided in the drive controller 6. Then, the drive control unit 6 controls the movement or stop of the car 10 by driving the first drive pulley 2 and the second drive pulley 3.

[0021] The three pairs of cages 10 installed as described above are moved at a predetermined moving speed by the driving of the three first driving pulleys 2 and the three second driving pulleys 3, respectively. Within 0, it is configured to circulate on the same orbit and stop on the same orbit. For example, the three pairs of cars 10 ascend along the ascending path 1008, and the direction of the moving direction thereof reverses from ascending to descending at the first inversion path 100 ⁽ 3. The paired car 10 has its ascending path 1 0 8 8 to descending path 1 0 as the moving direction thereof continuously changes from the 1st direction to the 2nd direction in the 1st inversion path 1 0 0 0. Move to 0.

[0022] Then, the three pairs of cages 10 descend along the descending path 100, and the direction of the moving direction is reversed from descending to ascending at the second anti-reverse path 100. In addition, the three pairs of cars 10 move up from the downhill 1100 by continuously changing the moving direction from the 1st direction to the 2nd direction at the 2nd inversion path 100 Move to road 1.08. As a result, the three pairs of cars 10 cyclically move on the moving path 100.

[0023] FIG. 2 is an explanatory diagram showing a configuration around the car 10 and the first inversion path 100O. In addition, in FIG. 2, the first drive pulley 2 and the second drive pulley 3 are omitted from illustration.

As shown in FIG. 2, the multi-car elevator 1 has a first object 17 to be detected, a second object 18 to be detected, and a lane determination object plate 19 to be detected. The first object to be inspected 17 is arranged so as to extend along the ascending path 100. Second detected 〇 2020/174746 6 卩 (：171? 2019 /041770

The body 18 is arranged so as to extend along the descending path 100. The first object to be detected 17 and the second object to be detected 18 are provided with graduations and bar codes that can be detected by the position sensors 15 3 and 15 described later.

[0024] The lane determination detection target plate 19 is arranged near the first inversion path 1 00 <3 at the boundary between the ascending path 1 08 and the descending path 1 0 0. A lane determination detected object (not shown) is also arranged in the second inversion path 100.

[0025] Further, the car 10 is provided with two distance sensors 1 43, 1 4 13 and two position sensors 1 5 3, 15 15. The two position sensors 153 and 155 are located above the car 10.

[0026] Further, the first position sensor 153 is installed at one end of the car 10 in the second direction, and the second position sensor 15 is connected to the second position of the car 10 It is installed at the other end of the direction. When the car 10 moves on the ascending path 100, the first position sensor 1553 faces the first object 17 to be detected. The first position sensor 153 reads the scale or bar code provided on the first object to be detected 17 and detects the position on the ascending path 108 in the car 10. Further, when the car 10 moves on the descending road 100, the second position sensor 15 faces the second object 18 to be detected. Then, the second position sensor 15 reads the scale or bar code provided on the second object to be detected 18 and detects the position on the descending path 1900 of the car 10.

[0027] The first distance sensor 143 is installed above the car 10. The first distance sensor 143 emits light !_ 1 from the upper part of the car 10 upward in the vertical direction, and receives the light reflected by the object to be measured. As the measurement target, for example, a ceiling 110 or a beam of the moving path 100, a beam, a detected object for lane determination provided on the second inversion path 100, or another car 10 is applied. It The first distance sensor 1 4 ₃ detects the distance of the car 1 0 Take the measurement object.

[0028] The second distance sensor 14 is installed under the car 10. The second distance sensor 14 emits light !_ 2 downward from the lower part of the car 10 in the vertical direction and receives the light reflected by the object to be measured. As an object to be measured 〇 2020/174746 7 卩 (：171? 2019 /041770

Is, for example, the floor surface 1 1 1 of the moving path 100 (see Fig. 1), the lane determination detection plate 19 provided on the first reversing path 100 0, and another car 10 etc. Applied. The second distance sensor 14 detects the distance between the object to be measured and the car 10.

[0029] 1 — 2. Control system for multi-car elevator

Next, the configuration of the control system of the multi-car elevator-1 having the above-described configuration will be described with reference to FIGS.

FIG. 3 is a block diagram showing the control system of the multi-car elevator _1.

As shown in FIG. 3, the multi-car elevator 1 includes a determination unit 30 that receives signals from the distance sensors 1 48, 1 4 and position sensors 1 5 3 and 1 5 The control unit 6 is provided. Determination unit 3 0 is the distance on the basis of the sensor 1 4 _3, 1 4 spoon and the position sensor 1 5 3, 1 5 signals received from the spoon, to detect the position and moving speed of the car 1 0, Maruchikaerebe Data _ 1 Make a safety judgment for the whole. The determination unit 30 also outputs position information and determination information to the drive control unit 6. The drive control unit 6 controls the drive of the first drive pulley 2 and the second drive pulley 3 based on the position information and the determination information of the car 10 received from the determination unit 30.

[0031] [Judgment part]

Next, the configuration of the determination unit 30 will be described with reference to FIG.

FIG. 4 is a block diagram showing the configuration of the determination unit 30.

As shown in Fig. 4, the judgment unit 30 consists of a safety judgment unit 31 for making a safety judgment, a collision prevention judgment unit 32, an overspeed judgment unit 33, a section judgment unit 34, and a reversal speed. It has a derivation unit 35, a speed derivation unit 36, and a changeover switch 37.

[0032] The reversal speed derivation unit 35 receives distance information from the distance sensors 1 4 3 and 14. Based on the distance information received from the range sensors 1 4 3 and 1 4 the reversing speed derivation unit 35 determines whether the first reversing path 1 000 or the second reversing path 1 00 in the car 10 Is calculated, that is, the speed during reverse movement is calculated. The reversal speed derivation unit 35 outputs the calculated reversal speed information to the collision prevention determination unit 3 2 and the overspeed determination unit 33 via the changeover switch 37. In the reversal speed derivation unit 35 〇 2020/174746 8 卩 (: 171? 2019 /041770

The method of calculating the reversal speed will be described later.

The speed derivation unit 36 receives the position information from the position sensors 15 3 and 15.

Then, the speed deriving unit 36 calculates the speed at the ascending path 10.8 and descending path 1100 of the car 10 based on the position information received from the position sensors 15 3 and 15. The so-called linear speed is calculated. The speed derivation unit 36 outputs the calculated speed information to the collision prevention determination unit 3 2 and the overspeed determination unit 3 3 via the changeover switch 37.

The section determination unit 34 receives position information from the position sensors 15 3 and 15.

Then, the section determination unit 34 determines whether the car 10 is located in a straight section of the ascending road 100 8 or the descending road 100 0m based on the position information, or the first inversion road 10 0 ◯ and whether or not it is located in the reversal section of the second reversal path 100 mouth. The section determination unit 34 outputs the determination information to the overspeed determination unit 33.

Furthermore, the section determination unit 34 switches the changeover switch 37 based on the determination result, and the speed information used by the collision prevention determination unit 3 2 and the overspeed determination unit 33 is calculated by the reverse speed derivation unit 3 Switch to the speed information calculated by 5 or the speed information calculated by the speed deriving unit 36. Specifically, when the car 10 is located in the straight line section, the section determination unit 34 switches the changeover switch 37 to use the speed information calculated by the speed derivation unit 36. .. Further, the section determination unit 34 switches to use the speed information calculated by the reversal speed derivation unit 35 when the car 10 is located in the reversal section.

[0036] The collision prevention determination unit 3 2 includes the distance sensor 1 4

1 Receives the distance information from the swoop and the speed information from the reversal speed derivation unit 35 or the speed derivation unit 36. The collision prevention determination unit 32 determines, based on the distance information and the speed information, whether or not the plurality of cars 10 moving on the moving path 100 are closer than a predetermined interval. Then, the collision prevention determination unit 32 outputs the determination result to the safety determination unit 3 1.

The overspeed determination unit 33 receives the position information from the position sensors 15 3, 15 and the speed information from the reversal speed derivation unit 35 or the speed derivation unit 36. And overspeed 〇 2020/174746 9 卩 (：171? 2019 /041770

The constant unit 33 determines whether or not the speed of the car 10 exceeds a predetermined moving speed. The overspeed judging unit 33 outputs the judgment result to the safety judging unit 3 1.

[0038] Based on the collision determination result information received from the collision prevention determination unit 3 2 and the overspeed determination result information received from the overspeed determination unit 33, the safety determination unit 3 1 determines whether the multicar evaluator_ 1 Is currently operating safely. Specifically, when the safety determination unit 31 determines that both the collision determination result information and the overspeed determination result information are safe, the safety determination unit 31 outputs the safety determination information to the drive control unit 6. ..

[Drive Controller]

Next, the configuration of the drive control unit 6 will be described with reference to FIG. FIG. 5 is a block diagram showing the configuration of the drive control unit 6.

As shown in FIG. 5, the drive controller 6 includes a position controller 61, a speed controller 62, a motor controller 63, a current detector 64, and a speed detector 65. have. Further, the drive control unit 6 has a brake circuit 22 connected to the brakes 21 provided on the first drive pulley 2 and the second drive pulley 3, and a power supply circuit 23. Further, the drive control unit 6 has a power cutoff unit 24 and a power converter 25 connected to the motor 20 provided on the first drive pulley 2 and the second drive pulley 3.

[0041] The motor 20 is connected to an external power source 2 via a power converter 25 and a power cutoff unit 24.

Power is supplied from 6. A breaker 27 is provided between the power supply 26 and the power cutoff unit 24.

The position control unit 61 is connected to the operation control unit 4 1 and the determination unit 30. The operation control unit 41 determines which car 10 to allocate according to the operation of the call button provided in the boarding/alighting area 120 of each floor, and outputs the determined operation information to the drive control unit 6. The position control unit 61 calculates the height between the entrances and exits 120 and the distance to the entrances and exits 120 to stop based on the operation information and the position information from the determination unit 30 and creates a speed command. To do. Then, the position control unit 61 outputs the created speed command to the speed control unit 62. 〇 2020/174746 10 卩 (：171? 2019 /041770

[0043] The speed control unit 62 performs feedback control of the speed command received from the position control unit 61 based on the speed information of the motor 20 detected by the speed detector 65, and creates a torque command. .. Then, the speed control unit 62 outputs the created torque command to the motor control unit 63. In addition, current information to the motor 20 detected by the current detector 6 4 is transmitted to the motor control unit 63.

Based on the current information detected by the current detector 64, the motor controller 63 performs feedback control of the torque command and outputs the current command to the power converter 25. The power converter 25 controls the current value supplied to the motor 20 based on the received current command. As a result, the motor 20 is rotationally controlled with a desired torque and speed.

When the safety judgment information from the judgment unit 30 is judged to be unsafe, the drive control unit 6 cuts off the power supply cutoff unit 24 and the brake circuit 22. As a result, the power to the motor 20 is cut off and the brake 21 is activated.

[0046] 1 — 3 Reverse operation of multi-car elevator

Next, the reversing operation of the multi-car elevator _1 having the above configuration will be described with reference to FIGS. 2 and 6 to 9. In the following description, an example will be described in which the car 10 moves from the ascending path 1008 to the descending path 100m via the first inversion path 100k.

Figure 6 is a flow chart showing the reversing operation. 7 to 9 are explanatory views showing the reversing operation of the car.

[0047] First of all, the position sensors 1 5 3 and 1 5 provided on the car 1

Detect the 0 position (step 3 1 1). Next, the determination unit 30 determines whether the car 10 is in the first inversion path 100 0 or the second inversion path 100 0, that is, inversion based on the position information of the position sensors 15 3, 15. It is judged whether or not it is located in the section (step 3 1 2).

[0048] As shown in Fig. 7, when the car 10 is located on the first reversal path 100, which is the reversal section, the position sensors 15 3, 15 are the first object to be detected. It does not face 17 or the second object 18 to be detected. Therefore, in the position sensors 15 3 and 15 〇 2020/174746 1 1 卩 (: 171? 2019 /041770

1 It is not possible to read the scale or bar code on the detected object 17 or the second detected object 18. As a result, the determination unit 30 can determine that the car 10 is located on the first inversion path 10 0 <3.

[0049] It should be noted that a mark indicating the end point of the straight line section may be provided at the end of the scale or the parcode provided on the first detected body 17 or the second detected body 18. As a result, it is possible to determine the section in which the car 10 is located based on the position information of the position sensors 153 and 155.

[0050] In the processing of step 3 1 2, when the determination unit 30 determines that the car 10 is located in the reversal section (determination of step 3 in step 3 1 2), the first distance sensor 1 Measure the distance between the car 10 and the ceiling 110 by 4 ₃ (step 3 13). Next, the determination unit 30 calculates the position of the car 10 on the first reversal path 1 0 0 <3 and the reversal speed based on the distance information measured by the first distance sensor 1 4 3. (Step 3 1 4). The method of calculating the reversal speed will be described later.

Next, the determination unit 30 determines whether or not the second distance sensor 14 provided in the car 10 has detected the lane determination detection plate 19 (step 3 15 ). When the car 10 moves from the ascending path 1008 in the first reversing path 100 000 to the descending path 100 000, as shown in Fig. 8, the second distance sensor 1 It is possible to detect the determination target plate 19.

[0052] In the processing of step 3 15, when the determination unit 30 determines that the second distance sensor 14 has detected the lane determination detection plate 19 (determination of step 3 in step 3 15) The determination unit 30 recognizes that the lane has moved, that is, the car 10 has moved from the ascending road 1 08 0 to the descending road 1 0 0 9 (step 3 16).

Next, the determination unit 30 determines again whether or not the detected objects 17 and 18 are detected by the position sensors 15 3 and 15 again (step 3 17). As shown in Fig. 9, when the car 10 moves through the first reversal path 100, which is the reversing section, to the straight path, the descending path 100, the second position sensor 15 It faces the second object 18 to be detected. 〇 2020/174746 12 (:171? 2019 /041770

[0054] When the determination unit 30 determines that the position sensors 15 3 and 15 have detected the objects to be detected 17 and 18 in the process of step 3 17 (step 3 17 7) Judgment 3) The judgment unit 30 judges that the car 10 has moved to the descending road 100 0, which is a straight section. As a result, the reversing operation of the car 10 by the multi-car elevator _1 of this example is completed.

[0055] It should be noted that, while the car 10 is located in the inversion section, the determination unit 30 always determines the position of the car 10 based on the distance information from the distance sensors 1 4 3 and 1 4 And calculate the reversal speed.

Next, with reference to FIG. 10, a method of calculating the speed during the reversing operation of the car 10 will be described.

FIG. 10 is an explanatory diagram showing a method of calculating the speed during the reversing operation of the car 10.

[0057] As shown in Fig. 10, in the reversal section, the distance between the car 1 0 and the ceiling 1 10 can be measured by the first distance sensor 1 4 3 provided in the car 10. R. The radii of the first drive pulley 2 and the second drive pulley 3 and the distance between the tops of the first drive pulley 2 and the second drive pulley 3 and the ceiling 110 are known. Therefore, the angle 0 of the car 10 located on the first drive pulley 2 or the second drive pulley 3 in the reversal section can be calculated by the following formulas 1 and 2.

[Formula 1]

Therefore

[Formula 2]

0 = eight 1^3 丨门{ (丫〇—丫+/

[0058] Also, the velocity V in the normal direction in the car 10 and

The relationship with is as shown in Equation 3 below.

[Formula 3]

V = VV 0 0 3 0 〇 2020/174746 13 卩 (: 171? 2019 /041770

Further, the vertical velocity V V can be calculated by the following formula 4 by the derivative of the measured value of the first distance sensor 1 43, actually, time 1: difference.

[Formula 4]

V two! ^ /

Thus, according to the multi-car elevator 1 of this example, the position sensor 15

It is possible to detect the position and speed of the car 10 in the reversing section, which is the position where the 3 and 15 claws are out of the objects to be detected 17 and 18 by the distance sensors 1 4 3 and 1 4 crates. As a result, even in the reversing section, it is possible to perform collision prevention determination of the car 10 and overspeed determination, and improve the safety of the multi-car elevator _1.

[0060] Further, according to the multi-car elevator 1 of this example, the speed of the car 10 in the reversing section is detected by the distance sensors 1 4 3 and 1 4 measuring the distance between the car 10 be able to. That is, the sensor for detecting the distance and the sensor for detecting the speed can be used in common, and the number of parts can be reduced.

[0061] In addition to the distance sensors 1 4 3 and 1 4 which measure the distance between the cages 10, the measurement targets such as the ceiling 1 1 0 and floor 1 1 1 in the moving path 1 0 0 A sensor may be provided to detect the speed of the car 10 in the reversing section by measuring the distance to the object.

[0062] 2. Second embodiment example

Next, a multi-car elevator according to the second embodiment will be described with reference to FIGS. 11 and 12.

FIG. 11 is a schematic configuration diagram showing a multi-car elevator according to the second embodiment, and FIG. 12 is a plan view showing a multi-car elevator according to the second embodiment. is there.

The same parts as those of the multi-car elevator 1 according to the first embodiment are designated by the same reference numerals, and duplicate description will be omitted.

[0063] As shown in Figs. 11 and 12, the first distance sensor 1 43 provided on the upper portion of the car 10 is arranged at the other end in the second direction, and the car 10 At the bottom of 〇 2020/174746 14 卩 (: 171? 2019 /041770

The second distance sensor 14 provided is arranged at one end in the second direction. Further, as shown in Fig. 12, the first distance sensor 1 43 is arranged at the end of the car 10 on the side of the second drive pulley 3 and the second distance sensor 1 4 3 is It is located at the end of the car 10 on the first drive pulley 2 side. That is, the first distance sensor 143 and the second distance sensor 14 are staggered in the upper part and the lower part of the car 10.

[0064] Therefore, when the leading car 10 travels in the reversing section, the light !_ 3 emitted from the first distance sensor 1 4 3 of the following car 10 4 will cause the car 10 8 to move. It is possible to prevent the second distance sensor 14 provided at the lower part from being irradiated. As a result, even when the preceding car 108 moves in the reverse section,

The distance between the two cars 108 and 10 can be measured.

[0065] Since other configurations are the same as those of the multi-car elevator 1 according to the first embodiment, their description will be omitted. With the multi-car elevator having such a configuration, the same operational effects as those of the multi-car elevator 1 according to the first embodiment described above can be obtained.

[0066] 3. Third Embodiment Example

Next, a multi-car elevator according to the third embodiment will be described with reference to FIG.

FIG. 13 is a schematic configuration diagram showing a multi-car elevator according to the third embodiment.

The multi-car elevator according to the third embodiment differs from the multi-car elevator 1 according to the first embodiment in the configuration of the distance sensor. Therefore, the distance sensor will be described here, and portions common to those of the multi-car elevator 1 according to the first embodiment will be denoted by the same reference symbols and redundant description will be omitted.

As shown in FIG. 13, the car 210 is provided with a distance sensor 2 14 and two position sensors 15 3 and 15. The distance sensor 2 14 is installed at a corner of the upper portion of the car 2 10 in the second direction. Distance sensor 2 〇2020/174746 1 5 (:171? 2019 /041770

14 is, for example, a two-dimensional sensor such as a two-dimensional! Then, the distance sensors 2 1 4 are equipped with vertical light !_ 1,! Irradiate _ 2 and light 1-3 in the horizontal direction.

[0069] In the above-described first, second, and third exemplary embodiments, the distance sensor

The case where an optical distance sensor such as a laser is used as 1 4 3, 1 4 13 and 2 1 4 has been described as an example, but the present invention is not limited to this, and a distance sensor of another method is applied. You may. As the distance sensor, for example, a millimeter-wave laser or a sensor using ultrasonic waves may be used when the traveling speed of the cars 10 and 210 is slow and safe for short distances.

[0070] Therefore, the light emitted from the distance sensor 2 1 4 in the horizontal direction!

By being reflected by the wall surface 1 12 of 0 0, the horizontal distance of the car 10 in the reversal section can also be detected. As a result, it is possible to determine the movement of the lane of the car 10 without providing the lane determination target plate 19. Further, since the horizontal velocity component of the car 10 can be calculated, the resolution of the speed detection of the car 10 in the inversion section can be improved.

[0071] Other configurations are similar to those of the multi-car elevator 1 according to the first embodiment, and therefore their description is omitted. With the multi-car elevator having such a configuration, the same operational effects as those of the multi-car elevator 1 according to the first embodiment described above can be obtained.

The present invention is not limited to the embodiments described above and shown in the drawings, and various modifications can be made without departing from the scope of the invention described in the claims. ..

Further, as the multi-car elevator, the multi-car elevator in which the plurality of cars 10 cyclically move in one direction has been described, but the present invention is not limited to this. For example, the present invention can be applied to a multi-car elevator that is configured so that a plurality of cars can move up and down in the moving path 100.

[0074] Further, as a driving method of the car of the multi-car elevator, 〇2020/174746 16 卩(：171? 2019 /041770

A drive method that includes a re-climbing machine and a lifting machine, or a drive method that causes a drive force (thrust) to be generated in the main rope itself by providing an inductive current to the main rope connected to the car by providing a linear drive section. May be used. It can also be applied to a self-propelled multi-car elevator with a drive unit in the car.

The number of cars provided in the multi-car elevator 1 is not limited to six, and the number of cars may be five or less, or seven or more.

[0076] In the above-described embodiment, an example is described in which the vertical direction, which is the vertical direction, is applied as the first direction in which the car moves, but the present invention is not limited to this. For example, the first direction may be a horizontal direction orthogonal to the vertical direction or an oblique direction inclined from the horizontal direction, the vertical direction, and the horizontal direction. As a multi-car elevator, a multi-car elevator in which at least a car can move in a first direction and a second direction intersecting with the first direction is applied.

[0077] Further, the multi-car elevator is not limited to the multi-car elevator in which the boarding/alighting area is provided along the first direction. For example, it can also be applied to a multi-car elevator in which the moving path extends in the first direction and the second direction, and the landing areas are provided in both the first direction and the second direction. In this case, it is possible to detect the speed at which the car moves along the corner of the moving path that bends from the first direction to the second direction.

[0078] In this specification, words such as "parallel" and "orthogonal" are used, but these do not mean only strict "parallel" and "orthogonal" but "parallel" and "orthogonal". ", and may be in a state of "substantially parallel" or "substantially orthogonal" within the range in which the function can be exerted.

Explanation of symbols

[0079] 1 multi-car elevator, 2 first drive pulley, 3 second drive pulley, 4 first lower pulley, 5 second lower pulley, 6 drive control section

8 No. 1 main mouth, 9 No. 2 main mouth, 1 0, 10 8 〇 2020/174746 17 卩(：171? 2019 /041770

〇〇 Car, 1 43 1st distance sensor, 1 4 sq. 2nd distance sensor,

1 53 1st position sensor, 1 5th position sensor 2nd position sensor, 1 7, 1 8 detected object, 1 9 lane judgment detection plate, 30 judgment section, 3 1 safety judgment section, 32 collision prevention judgment section, 33 Overspeed judgment unit, 34 Section judgment unit

, 35 Reverse speed derivation unit, 36 Speed derivation unit, 100 Moving path, 1

00 8 Ascending road (1st moving road), 100 Mitsu descending road (2nd moving road), 1 00 〇 1st reversing road, 100 opening 2nd reversing road, 1 1 0 Ceiling (detection object), 1 1 1 Floor surface (object to be detected), 1 1 2 Wall surface (object to be detected)

Claims

\¥0 2020/174746 18 卩 (: 17 2019/041770 Claims

[Claim 1] A plurality of cars that can move in the same direction along a first direction and a second direction that intersects the first direction,

A distance sensor that is installed in the car and that measures a distance between the object to be detected and the car that is provided in the moving path;

A determination unit that detects the speed when the moving direction of the car changes from the first direction to the second direction based on the distance information measured by the distance sensor,

Equipped with a multi-car elevator.

[Claim 2] The distance sensor is installed at one end of the car in the first direction.

The multi-car elevator according to claim 1.

[Claim 3] The distance sensor is a two-dimensional sensor capable of measuring a distance in two directions of the first direction and the second direction.

The multi-car elevator according to claim 2.

[Claim 4] The distance sensor is

A first distance sensor installed at one end of the car in the first direction,

A second distance sensor installed at the other end of the car in the first direction,

The multi-car elevator according to claim 1.

5. The first distance sensor and the second distance sensor are alternately arranged at the one end and the other end of the car.

The multi-car elevator according to claim 4.

[Claim 6] The moving path is

A first moving path along which the car moves along the first direction, and a second moving path along the first direction that is opposite to the first moving path; 〇 2020/174746 19 卩 (：171? 2019 /041770

A reversing path provided between the first moving path and the second moving path, wherein the moving direction of the car changes from the first direction to the second direction,

A detection plate for lane determination is provided in the inversion path,

When the distance sensor detects the lane determination detection plate, the determination unit determines which one of the first travel path and the second travel path the car has moved to. recognize

The multi-car elevator according to claim 4.

[Claim 7] An object to be detected which is arranged to extend along the first direction in the moving path,

A position sensor provided on the car, for detecting the position of the car by detecting the detected object;

The multicar elevator according to claim 1 or 6, further comprising:

[Claim 8] The determination unit

Based on the position information detected by the position sensor, determine the section where the car is located,

According to the determined section, as the speed information of the car, the speed information calculated by the distance information measured by the distance sensor and the speed information calculated by the position information of the position sensor can be switched.

The multi-car elevator according to claim 7.

[Claim 9] The distance sensor measures the distance of another car located in front of or behind the moving direction of the car.

The multi-car elevator overnight according to claim 1.