JP2007204937A - Apparatus and method for diagnosing driving condition of wire rope of elevator-type parking equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To automatically diagnose the driving condition of a wire rope for hoisting/lowering an ascending/descending platform. <P>SOLUTION: On the basis of the effect of output from a pulse generator and a detection means including a detection part Z01 and a plate ST01 to be detected, the numbers PNa0 and PNax of pulses depending on the amount of the rotation of a rotary motor are acquired between the timings when the ascending/descending platform detects the height of each floor, and the driving conditions of a wire rope and a driving sheave are diagnosed according to the numbers PNa0 and PNax of the pulses. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a technique for diagnosing a driving state of a rope body that raises and lowers a lifting platform in an elevator parking apparatus.

  As a general elevator-type parking device, an elevator hoistway is formed in the center of the parking tower, and parking shelves are provided in a hierarchical manner in the left and right spaces of this hoistway, and are placed on the lowermost part of the hoistway. There is something that forms the entrance and entrance and exit. The hoistway is provided with an elevating platform having a substantially rectangular frame structure so as to be movable up and down, so that the vehicle mounting pallet or the vehicle itself is transferred between the elevating platform and each parking shelf. It is configured. In addition, the four corners of the lifting platform are suspended by four sets of wire ropes as suspension ropes. Each of these four sets of wire ropes passes through a turning pulley provided at the uppermost part of the hoistway, and is then rotated and driven by the elevating drive part of the uppermost machine room of the parking tower. It is connected to the counterweight on the other end side through the sheave.

  In such an elevator-type parking apparatus, the four shelf columns surrounding the hoistway are provided with detected plates corresponding to the entrance floor and each parking floor, and the elevator platform detects the detected plate. A contact sensor is provided. And when a raising / lowering stand raises / lowers, a non-contact sensor detects the to-be-detected board, and recognizes the present position of a raising / lowering stand and stops it on the target floor.

  By the way, in such an elevator-type parking apparatus, due to long-term use, the diameter of the wire rope is reduced due to wear or elongation, and the sheave groove of the drive sheave is worn. These phenomena not only cause fluctuations in the correspondence between the rotational speed of the motor and the lifting speed of the lifting platform, but also cause problems in the speed control of the lifting platform, and also cause problems in the lifting operation itself of the lifting platform. .

  This will be described more specifically. FIG. 9 shows a state in which the wire rope 110 is wound around the sheave groove 122 of the drive sheave 120. As shown in FIG. 9A, in the initial state, the wire rope 110 is wound around the sheave groove 122. In this state, the diameter of the wire rope 110 is D0, and the sinking amount of the wire rope 110 is h0. On the other hand, as shown in FIG. 9B, when the sheave groove 122 is worn, even when the wire rope 110 is not worn, the sinking amount h1 of the wire rope 110 is smaller than the initial sinking amount h0. Also grows. Further, as shown in FIG. 9C, when the wire rope 110 is worn to a diameter D1, even if the sheave groove 122 is not worn, the sinking amount h2 of the wire rope 110 is the initial sinking. It becomes larger than the quantity h0. Further, as shown in FIG. 9 (d), when the sheave groove 122 is worn and the wire rope 110 is worn to the diameter D2, the sinking amount h3 of the wire rope 110 is the initial sinking amount h0. Bigger than.

  If the sinking amount of the wire rope 110 is increased, the drive radius of the drive sheave 120 is consequently reduced. As a result, the ratio between the rotation of the motor that rotationally drives the drive sheave 120 and the amount of lifting of the lifting platform changes from the initial ratio. Normally, speed control when raising and lowering the lifting platform is realized by controlling the rotational speed of the motor. As described above, the ratio between the rotation of the motor and the lifting amount of the lifting platform changes from the initial ratio. Then, it becomes difficult to control the lifting speed of the lifting platform.

  In addition, if the wire rope has a reduced diameter and the sheave groove is extremely worn, the wire rope may slide in the sheave groove, which may cause the elevator 32 to be inclined.

  Variations in the correspondence relationship between the rotational speed of the motor and the lifting speed of the lifting platform can be dealt with, for example, by appropriately correcting the correspondence relationship (ratio).

  However, conventionally, there has been no simple method for dealing with problems caused by wire rope slippage caused by wire rope shrinkage and sheave groove wear. That is, as disclosed in Patent Document 1 and Patent Document 2, the wear state of these drive sheaves and wire ropes is inspected manually by maintenance personnel to determine whether or not it is within an allowable range.

Japanese Utility Model Publication No. 61-193303 Japanese Patent Laid-Open No. 11-37703

  However, since the drive sheave and the like are at the top of the parking tower and the diagnosis work itself is a very detailed inspection such as the degree of wear or diameter reduction, it is very troublesome to perform the diagnosis work frequently. It is.

  Therefore, an object of the present invention is to easily diagnose the driving status of a cable body that raises and lowers a lifting platform.

  The driving state diagnostic device for the rope body in the elevator type parking apparatus according to the present invention includes a vehicle storage means having a hoistway extending in the vertical direction, and a plurality of parking shelves provided in a hierarchy along the hoistway, A lifting platform that is movable up and down along the hoistway, a cable body that suspends the lifting table, a rotation driving unit, and a driving force by the rotation driving unit around which the cable body is wound. An elevating drive device having a rotation transmission body that transmits and elevates the elevating table, and detecting means for detecting each timing when the elevating table reaches a plurality of reference height positions set in the hoistway; Based on the output results from the rotation drive amount acquisition means for acquiring the rotation amount by the rotation drive section, and the detection means and the rotation drive amount acquisition means, the rotation drive section between the detection timings by the detection means Seek movement amount, in which and a diagnosis sectional control means for diagnosing the driving state of the rigging and the rotation transmitting member on the basis of the amount of rotation.

  In this case, when the diagnosis control unit determines that the rotation amount by the rotation drive unit between the detection timings by the detection unit is outside a predetermined allowable range set in advance, the drive status determination May be output.

  Further, the diagnosis control means obtains a rotation amount by the rotation drive unit between detection timings by the detection means in accordance with an allowable range setting command input via the input means, and sets a predetermined range before and after the allowable range. It may be set to a range.

  Further, the detection means detects a detector provided at one of a plurality of reference height positions in the elevator and the hoistway, and detects the detector as the elevator is provided on the other. And a detector.

  The rotational drive amount acquisition means may be a rotary encoder that detects the rotational amount of the rotational drive unit.

  The plurality of reference height positions may be set to a position corresponding to the first floor above the ground and a position corresponding to the top floor.

  Moreover, the driving state diagnosis method for the rope body in the elevator type parking apparatus according to the present invention includes a vehicle storage means having a hoistway extending in the vertical direction and a plurality of parking shelves provided in a hierarchy along the hoistway. A lifting platform that is movable up and down along the hoistway, a cable body that suspends the lifting table, a rotation driving unit, and a driving force by the rotation driving unit around which the cable body is wound. A lifting drive device having a rotation transmission device that transmits to the cable body and moves the lift table up and down, and a method for diagnosing the drive state of the cable body in an elevator-type parking apparatus, wherein the lift table is in the hoistway The amount of rotation by the rotation drive unit is obtained between each timing when a plurality of set reference height positions are reached, and the drive status of the cord body and the rotation transmission body is diagnosed based on the amount of rotation.

  According to the driving state diagnostic device of the rope body in the elevator type parking apparatus of the present invention, a lifting platform provided so as to be movable up and down along the hoistway, a rope body that suspends the lifting platform, a rotation driving unit, Since the cable body is wound around the cable body, the structure includes a lifting drive device having a rotation transmission body that transmits a driving force from the rotation driving unit to the cable body and lifts the lifting platform. When the diameter of the cable body is reduced or the rotating body is worn, the amount of rotation of the rotation drive unit required to raise and lower the lifting platform between a plurality of reference height positions varies. Therefore, based on the output results from the detection means and the rotation drive amount acquisition means, the rotation amount by the rotation drive unit is obtained between the detection timings by the detection means, and the cord and the rope are determined based on the rotation amount. By diagnosing the driving state of the rotation transmitting body, it is possible to easily and automatically diagnose the driving state of the rope body that raises and lowers the lifting platform.

  In addition, when the diagnosis control unit determines that the rotation amount by the rotation drive unit between the detection timings by the detection unit is outside a predetermined allowable range set in advance, a drive status failure determination is output. Then, the failure can be automatically determined.

  Further, the diagnosis control means obtains a rotation amount by the rotation drive unit between detection timings by the detection means in accordance with an allowable range setting command inputted through the input means, and sets a predetermined range before and after the allowable range. When the range is set, for example, if an allowable range setting command is input after the manual adjustment and installation of the lifting platform, an appropriate allowable range can be set according to the actual installation state of the elevator parking apparatus.

  Further, the detection means detects a detector provided at one of a plurality of reference height positions in the elevator and the hoistway, and detects the detector as the elevator is provided on the other. With the configuration including the detection unit, arrival at each reference height position of the lifting platform can be detected more accurately.

  Further, when the rotational drive amount acquisition means is a rotary encoder that detects the rotational amount of the rotational drive unit, the rotational amount can be detected more accurately.

  Further, when the plurality of reference height positions are set to a position corresponding to the first floor above the ground and a position corresponding to the top floor, the diagnosis can be performed relatively accurately and quickly.

  According to the driving state diagnosis method of the rope body in the elevator type parking apparatus of the present invention, a lifting platform provided so as to be movable up and down along the hoistway, a rope body that suspends the lifting platform, a rotation driving unit, In the configuration provided with the lifting drive device having the rotation transmission body that is wound around the rope body and transmits the driving force by the rotary drive unit to the rope body to raise and lower the lifting platform, the rope body is worn or stretched. When the diameter is reduced or the rotating body is worn, the amount of rotation of the rotation driving unit necessary for raising and lowering the lifting platform between a plurality of reference height positions varies. Therefore, the amount of rotation by the rotation drive unit is obtained between each timing when the lifting platform reaches a plurality of reference height positions set in the hoistway, and the rope and the rotation transmission body are determined based on the amount of rotation. By diagnosing the driving state, it is possible to easily diagnose the driving state of the rope body that raises and lowers the lifting platform without directly visualizing the rope body and the rotation transmission body.

  Hereinafter, a driving state diagnosis apparatus for a rope body and a driving situation diagnosis method for a rope body in an elevator type parking apparatus according to an embodiment of the present invention will be described.

<Overall description of the elevator parking system>
First, an overall configuration of an elevator parking apparatus to which the present invention is applied will be described. FIG. 1 is a diagram showing an overall configuration of the elevator parking device, and FIG. 2 is a diagram showing an elevator device portion in the elevator parking device.

  The elevator parking apparatus includes a parking tower 10 as a storage unit having a parking shelf 20 and an elevator apparatus 30 that raises and lowers a lifting platform 32. Then, the vehicle 2 received from outside is moved up and down by the lifting platform 32 and transferred to and stored in the parking shelf 20 which is an empty shelf, and the vehicle 2 stored in any parking shelf 20 is moved up and down. It is configured to be moved downward by the table 32 and discharged outside. Hereinafter, each part will be described in more detail.

<Parking tower inside>
The parking tower 10 has a storage space extending along the vertical direction. And the hoistway 12 extended along an up-down direction is provided in the approximate center part of the accommodation space, and the several parking shelf 20 has the space | interval more than the height dimension of the vehicle 2 on both sides of this hoistway 12. It is provided in a hierarchy.

  The hoistway 12 is formed in a substantially rectangular space in plan view, and supports 14FR, 14FL, 14RR, and 14RL are erected at four corners in the plan view shape. The elevator platform 32 described later moves up and down along the main columns 14FR, 14FL, 14RR, and 14RL.

  In addition, at the lowermost part of the parking tower 10 and corresponding to the hoistway 12, a loading / unloading port 16 is provided. The external vehicle 2 enters the elevator platform 32 at the bottom of the parking tower 10 via the main entrance / exit 16 and, conversely, enters the entrance 16 from the elevator 32 at the bottom of the parking tower 10. Issued to the outside via That is, the first floor on the ground, which is the lowest part of the parking tower 10, is configured as an entry floor 17 for vehicle entry / exit. Here, an example in which the boarding floor 17 is the first floor above the ground will be described. However, the boarding floor does not necessarily have to be the first floor above ground, and may be provided on the middle floor or the top floor.

  Furthermore, a machine room 11 is provided at the uppermost part of the parking tower 10, and an elevator drive device 40 for the elevator device 30 is stored in the machine room 11.

<Elevator device>
The elevator apparatus 30 includes a lifting platform 32 provided so as to be movable up and down along the hoistway 12 and a lifting drive device 40 that moves the lifting platform 32 up and down.

  The lifting platform 32 is formed into a substantially rectangular member in plan view by forming a plurality of frame members or by a plate-like member, and is configured to be movable up and down in the hoistway 12 in a substantially horizontal posture. Has been.

  A pallet 24 is disposed on the main lifting platform 32 and each parking shelf 20, and rails that movably support the pallet 24 are provided on the main lifting platform 32 and each parking shelf 20. The rails are arranged in a straight line in a state where the lifting platform 32 is moved up and down to the height position of the parking shelf 20 at a predetermined level. In addition, the lifting platform 32 is provided with a pallet transfer device 36 for moving the pallet 24. And in the state which the raising / lowering stand 32 was raised / lowered to the height position of the parking shelf 20 in a predetermined | prescribed stage, by the drive of the pallet transfer apparatus 36, the raising / lowering stand 32 to the parking shelf 20 or from the parking shelf 20 to the raising / lowering stand 32 The pallet 24 moves. Further, by such transfer of the pallet 24, the vehicle 2 mounted on the pallet 24 is transferred from the lifting platform 32 to the parking shelf 20 or from the parking shelf 20 to the lifting platform 32. Yes.

  A configuration in which the pallet 24 is omitted and the vehicle 2 is directly transferred between the lifting platform 32 and each parking shelf 20 may be employed.

  Further, in this parking apparatus, in order to align the height positions of the elevator platform 32 and the parking racks 20 with each other, for example, a positioning locking device as disclosed in JP-A-2003-97077 (see FIG. 5). Is incorporated.

  The elevating drive device 40 is means for moving the elevating table 32 up and down. That is, the lift drive device 40 is installed in the machine room 11 and includes a lift drive unit 42 and a drive sheave 44. The elevating drive unit 42 includes a forward / reverse rotating motor 42a with a brake for elevating and lowering the elevating platform 32, a speed reducer 42b, and a drive shaft 42c that is rotationally driven by these.

  The forward / reverse rotation motor 42a is provided at a fixed position in the machine room 11, and serves as a rotational drive unit that rotationally drives in both forward and reverse directions to raise and lower the elevator 32 in accordance with a command from the parking device controller 50 described later. Function.

  The forward / reverse rotation motor 42a incorporates a pulse generator 43 such as a rotary encoder as a rotation amount acquisition means for acquiring the rotation amount (see FIG. 5). The pulse generator 43 is connected to the rotation shaft of the forward / reverse rotation motor 42a, generates a pulse signal corresponding to the amount of rotation of the forward / reverse rotation motor 42a from a predetermined origin position, and will be described later. The unit 50 is provided. With this pulse generator 43, the amount of rotation of the motor 42a can be detected more accurately. The pulse generator 43 is not necessarily connected to the rotating shaft of the forward / reverse rotating motor 42a, and may be connected to the rotating shaft of the drive sheave 44 or the turning sheave 46, for example.

  The drive sheave 44 is attached to the drive shaft 42c and is driven to rotate in both forward and reverse directions by the drive of the elevating drive unit 42. Further, a turning sheave 46 is rotatably provided near the drive sheave 44. Each of the drive sheave 44 and the turning sheave 46 is formed with a plurality of (here, four) sheave grooves 44a and 46a. The drive sheave 44 functions as a rotation transmission body that transmits the driving force from the rotating motor 42a to the wire rope 48 to move the lifting platform 32 up and down.

  Further, four turning pulleys 47 are provided in the machine room 11 and at respective positions above the four corners of the hoistway 12.

  Further, one end portions of the four wire ropes 48 as the rope bodies are respectively fixed to the four corners of the lifting platform 32. The wire ropes 48 are wound around the turning pulleys 47, and are wound around the sheave grooves 44a of the drive sheave 44 in an assembled state, and are further wound around the sheave grooves 46a of the turning sheave 46. Wrapped. A counterweight 49 is connected to the other end of each wire rope 48.

  Then, the drive sheave 44 is rotated in the normal rotation direction or the reverse rotation direction by driving the elevating drive unit 42 so that the wire rope 48 is wound or unwound, and the lifting platform 32 moves up and down in the hoistway 12. It is supposed to move.

<Detection means>
In addition, the lifting platform 32 and the columns 14FR, 14FL, 14RR, and 14RL incorporate detection means for detecting each timing when the lifting platform 32 reaches a plurality of reference height positions set in the hoistway 12. Yes. Here, an example will be described in which each reference height position is set in the hoistway 12 to the position of the entrance floor 17 and each parking shelf 20, that is, the position corresponding to each floor from the first floor to the top floor. However, each reference height position does not need to be set to a position corresponding to each floor, and is set to an arbitrary floor (for example, the top floor) above the ground floor and between the floors. May be.

  FIG. 3 is a perspective view showing a means for detecting whether or not the lifting platform has reached the respective reference height positions. As shown in FIGS. 2 and 3, a detection unit Z01 and a detection unit Z02 are provided at one of the four corners of the lifting platform 32. Further, of the support posts 14FR, 14FL, 14RR, and 14RL, the support posts 14RR corresponding to the detection units Z01 and Z02 are at the height positions (reference height positions) corresponding to the entrance floor 17 and the parking racks 20, respectively. Detected plates ST01 and ST02 are provided as detected elements. The detection plates ST01 and ST02 correspond to the detection units Z01 and Z02, respectively. In each floor where the elevator 32 is moving up and down, the detection unit Z01 detects the detection plate ST01 when passing the height position corresponding to the detection plate ST01, and the detection unit Z02 detects the detection plate Z02. The detected plate ST02 is detected when passing through a height position corresponding to ST02.

  The detected plates ST01 and ST02 are provided so as to be shifted up and down by a predetermined amount D in such a manner that the detected plate ST01 is downward and the detected plate ST02 is upward. And while the elevator 32 is raised, the detection unit Z02 detects the detected plate ST02 at a timing after the detector Z01 detects the detected plate ST01, and when the elevator 32 is lowered, the detection is detected. Subsequently, the detection unit Z01 detects the detected plate ST01 at a timing after the portion Z02 detects the detected plate ST02. Thereby, while raising / lowering the raising / lowering stand 32 is discriminate | determined, raising / lowering control of the raising / lowering stand 32, etc. can be performed by counting and determining each arrival floor.

  The parking device control unit 50, which will be described later, controls the driving of the motor 42a in accordance with the detection timing of the detection plates ST01, ST02 by the detection units Z01, Z02, so that the elevator 32 is placed on the entrance floor 17 or predetermined parking. The rack 20 is raised and lowered to stop. Further, a drive status diagnosis process described later is performed based on the detection timing by the detection unit Z01. That is, in the present embodiment, the detection unit Z01 and the detection plate ST01 provided on each floor function as detection means for detecting each timing when the lifting platform 32 reaches each reference height position. In particular, the timing when the elevator 32 reaches each floor can be detected more accurately by the detection unit Z01 provided on the elevator 32 and the detection plate ST01 provided on each floor.

  As the detection units Z01 and Z02, those having a non-contact type or contact type sensor are used. As the sensor, it is preferable to use a non-contact type sensor such as a photoelectric sensor that performs detection based on the presence or absence of light shielding by the detector, or a magnetic sensor that performs detection based on the presence or absence of a magnetic reaction by the detector.

<Electrical configuration of elevator parking device>
FIG. 5 is a block diagram showing an electrical configuration of the elevator parking apparatus. In this elevator type parking device, a parking device control unit 50, a drive unit 60, a detector 70, a pulse generator 43, an operation panel 80, a guidance indicator 55, and a transmission / reception device 90 are interconnected via an input / output device 58. It is set as the structure.

  The parking device control unit 50 is configured by a general microcomputer including a storage unit 51 such as a ROM 51a and a RAM 51b, a CPU 52, and the like. And the parking apparatus control part 50 performs arithmetic operation by the software program stored beforehand, and governs the whole control of this parking apparatus including the raising / lowering operation control of the raising / lowering stand 32, etc. FIG. Further, as will be described in detail later, the parking device control unit 50 obtains the rotation amount by the rotary motor 42a between the detection timings by the detection means, based on the output results from the detection means and the pulse generator 43, Based on the rotation amount, it functions as a diagnosis control means for executing a process for diagnosing the drive status of the wire rope 48 and the drive sheave 44.

  The drive unit 60 includes an elevating drive unit 42 that elevates the elevating table 32, a pallet transfer driving unit 36a that transfers the pallet 24 between the elevating table 32 and each parking shelf 20, and a parking system that drives the positioning locking device. There are provided a rocking drive unit 64 of the shelf 20 / elevating platform 32, an entry / exit door drive unit 66 for opening / closing an opening / closing door (not shown) provided at the entrance / exit 16 of the parking tower 10.

  Each of the drive units 42, 36a, 64, 66 is driven in accordance with an operation command given from the parking device control unit 50 via the input / output device 58.

  The detector 70 includes an entrance floor landing detector group 72, a parking floor landing detector group 74, an entrance floor vehicle detector group 78, and the like.

  The entrance floor landing detector group 72 has at least one sensor (not shown) that detects whether or not the lifting platform 32 has landed on the entrance floor 17.

  The parking floor landing detector group 74 includes the detection units Z01, Z02 and the like, and is configured to detect whether the lifting platform 32 has landed on the parking floor corresponding to each parking shelf 20. ing.

  The entrance floor vehicle detector group 78 includes at least one sensor (not shown) provided on the entrance floor 17, and detects the presence or absence of the vehicle 2 on the entrance floor 17.

  Detection results from these detector groups 72, 74, and 78 are provided to the parking device control unit 50 via the input / output device 58.

  The operation panel 80 is provided on an outer wall or the like of the parking tower 10 and includes an operation mode changeover switch 82, an inspection mode changeover switch 83, a display unit 85, and the like.

  The driving mode changeover switch 82 is an input means for selectively switching the driving mode of the parking apparatus to an automatic mode, a manual mode, or a maintenance / inspection mode.

  The inspection mode changeover switch 83 is an input means for switching the inspection mode in the parking apparatus to the floor height diagnosis mode. Then, in the state where the parking apparatus is switched to the maintenance / inspection mode, the floor height diagnosis mode is designated and a predetermined command is input, thereby executing a driving state diagnosis process described later. The processing diagnosis result is displayed on the display unit 85.

  The operation panel 80 includes a power on / off key switch 81 for turning on / off the power of the entire parking apparatus, an input key 84 such as a numeric keypad, a card insertion slot 86, and the like. It is designed to accept various inputs necessary for proper operation.

  The input received by the operation panel 80 is given to the parking device control unit 50 via the input / output device 58, and the processing result in the parking device control unit 50 is displayed on the display unit 85 and the like. Yes.

  The guidance display 55 includes a warehousing guidance display 56 and a warehousing / unloading guidance display 57 that perform predetermined guidance to the driver of the vehicle 2 when the vehicle 2 is loaded and unloaded. And according to the display command from the parking apparatus control part 50, a garage guidance display etc. come to be displayed with respect to the driver | operator of the vehicle 2 through the warehousing guidance display device 56 and the warehousing / extraction guidance display device 57 at a predetermined timing. ing.

  The transmission / reception device 90 is a device for connecting the elevator parking device to an external communication network 92. That is, the elevator parking apparatus is communicably connected from the transmission / reception apparatus 90 to a remote maintenance computer 94 or a portable terminal 96 in an external remote maintenance center or the like via a communication network 92. In response to a command from the remote maintenance computer 94 or the portable terminal 96, the horizontal degree diagnosis process is executed, and the diagnosis result can be transmitted to the remote maintenance computer 94 or the portable terminal 96.

  The communication network 92 here may be wired or wireless, or may be a public communication network or a communication network using a dedicated line.

<Description of operation>
The elevator parking apparatus configured as described above performs the storing operation of the vehicle 2 in the same manner as a conventional general elevator parking apparatus. That is, at the time of warehousing, the elevator platform 32 on which the pallet 24 is mounted is lowered to the entry floor 17 where the vehicle 2 is placed on the pallet 24. And the vehicle 2 is transferred with the pallet 24 to the parking shelf 20 of the said floor | bed with the raising / lowering stand 32 raised to the predetermined floor. At the time of delivery, the vehicle 2 stored in the parking shelf 20 on the predetermined floor is transferred together with the pallet 24 to the lifting platform 32, and then the lifting platform 32 is lowered to the entry floor 17. Then, the vehicle 2 is taken out of the parking tower 10 from the pallet 24. Since these entering / exiting operations are well known in the art, a detailed description thereof is omitted here.

  This elevator type parking apparatus has a function of performing a driving condition diagnosis process for the wire rope 48 and the drive sheave 44 in addition to the above-described entry / exit process of the vehicle 2, and the driving condition diagnosis process is more detailed. Explained.

  First, in performing the driving condition diagnosis process of the wire rope 48 and the drive sheave 44 in this elevator type parking apparatus, it is necessary to perform the teaching process in advance, and the teaching process will be described.

  FIG. 6 is a flowchart showing the teaching process.

  First, the power on / off key switch 81 is switched to the “on” state, the operation mode switch 82 is switched to the “maintenance / inspection mode”, and the inspection mode switch 83 is switched to the “floor height diagnosis mode”. In the initial state, the lifting platform 32 is in a state where it is landed on the origin floor (origin position, for example, the entrance floor 17) without the pallet 24 mounted. In this state, all the detection units Z01 and Z02 of the lifting platform 32 are in the on state, and the lifting platform 32 is locked at the boarding floor 17. Furthermore, the entrance / exit floor 17 is unmanned and the entry / exit door is also closed.

  In this state, a command (allowable range setting command) for executing the teaching process is given via the input key 84 or the like. Then, the following processing is executed under the control of the parking device control unit 50. In other words, the lock on the lifting platform 32 is released, and as shown in step S1, the lifting platform 32 rises from the origin floor.

  Note that the origin floor (origin position) need not be the entrance floor. For example, an origin sensor is additionally provided in the vicinity of the entrance floor or other places, and when it is detected that the elevator 32 has reached a predetermined height position through the origin sensor, the elevator 32 is brought to the origin position. It may be determined that there is a reset (return to origin).

  Next, in step S2, it is determined whether or not the detection unit Z01 is turned off, and the determination process in step S2 is repeated until the detection unit Z01 is turned off. And if the raising / lowering stand 32 raises more than predetermined amount, the fall to the OFF state of the detection part Z01 will be determined, and it will progress to following step S3.

  In step S3, based on the output from the pulse generator 43, the number of pulses of the pulse generator 43 (the number of pulses counted from the origin position) at the timing when the detection unit Z01 is switched to the OFF state is stored in the storage means 51. Remembered. The number of pulses is a numerical expression of the amount of rotation by the rotary motor 42a.

  Next, in step S4, it is determined whether or not the detection unit Z01 has been turned on, and the process in step S4 is repeated until it is determined that the detection unit Z01 has been switched to the on state. When it is determined that the elevator platform has reached the next upper floor and the detection unit Z01 has been turned on, the process proceeds to the next step S5.

  In step S5, the number of pulses of the pulse generator 43 (the number of pulses counted from the origin position) at the timing when it is determined that the detection unit Z01 is turned on in the previous step S4 is stored in the storage unit 51 as PNx. Note that “x” of the pulse number PNx is an initial value “1”, and is a positive integer that increases by “1” every time after passing through step S4.

  In the next step S6, it is determined whether or not the lifting platform 32 has landed on the top floor. Here, the determination is made based on, for example, whether or not the value x has reached the value X corresponding to the top floor. Here, if it is determined that the lifting platform 32 has not landed on the top floor, the process proceeds to step S12. In step S12, the raising / lowering platform 32 continues to rise, and the process returns to step S4 to repeat the processes of steps S4 to S6.

  On the other hand, if it is determined in step S6 that the lifting platform 32 has landed on the top floor, the process proceeds to step S7. In this state, the storage means 51 stores the number of pulses PN0 corresponding to the origin floor and the number of pulses PNx corresponding to each floor from the upper floor to the top floor.

  In step S7, the ascent of the elevator 32 is stopped, and then the process proceeds to step S8.

  In step S8, each of the pulse numbers PN0 and PNx is multiplied by a predetermined coefficient k, and numerically converted into values L0 and Lx that more directly indicate the rising amount of the lifting platform 32. Here, the predetermined coefficient is a coefficient indicating the amount of lifting of the lifting platform 32 per pulse, and is a value obtained theoretically or experimentally. The converted values L0 and Lx are also included in the value indirectly indicating the rotation amount by the rotary motor 42a. That is, the reference rotation amount for performing the diagnosis process includes all numerical values determined according to the rotation amount.

  In subsequent step S9, ΔLx = L0−Lx is obtained as each floor height of the parking floor where each parking shelf 20 is located. Then, ΔLx ± β is stored in the storage means 51 as a floor height reference value (allowable range) based on the obtained floor heights. Note that β is a tolerance, and how much tolerance is allowed is set empirically and experimentally.

  In the next step S10, the lifting platform 32 is lowered. In step S11, it is determined whether or not the lifting platform 32 has landed on the origin floor. When the lifting platform 32 has landed on the origin floor and stopped, the teaching process is terminated.

  Here, the relationship between the on / off timing of the detection unit Z01, the acquisition timing of the pulse numbers PN0 and PNx, and the floor height ΔLx will be described with reference to FIG.

  That is, the pulse number PN0 is acquired at the timing when the elevator 32 is raised from the origin floor and the detection unit Z01 is turned off (see steps S2 and S3). Subsequently, the pulse numbers PN1, PN2,... Are acquired at each timing when the elevator 32 reaches the second floor, the third floor,... And the detection unit Z01 is turned on (see step S4 to step S6). Then, the pulse number PNX is acquired at the timing when the detection unit Z01 is turned on after reaching the top floor X (see steps S4 to S6). Further, each pulse number PN0, PN1, PN2,... PNX is multiplied by a coefficient k to be converted into L0, L1, L2,... LX indicating each floor height (see step S8). Subsequently, by calculating ΔLx = L0−Lx, floor heights ΔL1, ΔL2,... ΔLX corresponding to the floor are obtained. Each of the floor heights ΔL1, ΔL2,... ΔLX is a value calculated based on a coefficient k that is assumed in a certain state such as an initial state. The value fluctuates depending on the condition of the sheave 44 and does not indicate an accurate floor height.

  Next, the drive status diagnosis process of the wire rope 48 and the drive sheave 44 will be described. FIG. 7 is a flowchart showing the drive status diagnosis process.

  First, the power on / off key switch 81 is switched to the “on” state, the operation mode switch 82 is switched to the “maintenance / inspection mode”, and the inspection mode switch 83 is switched to the “horizontal level determination mode”. The initial state is the same as the initial state in the teaching process.

  In this state, an instruction is given to start diagnostic processing via the input key 84 or the like. Then, processing similar to steps S1 to S6 and S12 in the teaching processing is executed. Here, the number of pulses at each parking floor is stored as PNa0 and PNax.

  Here, when the sheave groove 44a of the drive sheave 44 is worn or the wire rope 48 is reduced in diameter due to wear or elongation, the drive radius of the drive sheave 44 is smaller than the state in which the teaching process is performed. . For this reason, the amount of rotation of the rotary motor 42a required to raise the lifting platform 32 by a certain height is larger than that in the case where the teaching process is performed. That is, when the wire rope 48 is reduced in diameter and the drive sheave 44 is worn due to wear or elongation, the pulse numbers PNa0 and PMax corresponding to the respective parking floors obtained here are the pulse numbers obtained by the teaching process. It becomes larger than PNx.

  If it is determined in step S6 that the lift 32 has reached the top floor, the process proceeds to step S28. In step S28, the pulse numbers PNa0 and PNax are multiplied by the predetermined coefficient k, and the values La0 and Lax are digitized.

  In the following step S29, ΔLax = La0−Lax is obtained as each floor height of the parking floor where each parking shelf 20 is located, and this is stored in the storage means 51, and the process proceeds to the next step S30.

  In step S30, it is determined whether or not each floor height ΔLax of the parking floor is within the range of the floor height reference value ΔLx ± β. When each floor height ΔLax is the same as the upper limit value or the lower limit value of the floor height reference value ΔLx ± β, either YES or NO determination may be made.

  When it is determined that each floor height ΔLax of the parking floor is within the range of the floor height reference value ΔLx ± β, the process proceeds to step S31 to make a pass determination. And it is displayed on the display part 85 that it is a pass determination, for example, and it progresses to step S32.

  On the other hand, if it is determined in step S30 that each floor height ΔLax of the parking floor is outside the range of the floor height reference value ΔLx ± β, the process proceeds to step S34 and a failure determination is made. And it records and displays that it is unacceptable. In the case of displaying the failure, for example, “the sheave groove wear intensification is suspected and the sheave groove repair command” may be displayed. Thereafter, the process proceeds to step S32.

  In step S32, the lifting platform 32 is lowered. Then, in the next step S33, it is determined whether or not the lifting platform 32 has landed on the origin floor, and when the lifting platform 32 has landed on the origin floor and stopped, the drive status diagnosis process is terminated.

  Then, when a failure determination is made in step S34 and a message to that effect is displayed, a maintenance worker enters the machine room 11 of the parking tower 10, and visually inspects the drive sheave 44 and the wire rope 48 in each sheave groove 44a. A detailed investigation is performed by measuring the amount of subsidence and inspecting the sheave groove 122 by photographing.

  In the teaching process and the diagnostic process, the origin position that is the starting position of the elevator platform 32 may be set in addition to the entrance floor 17 or between each floor position above or between each floor. Further, the lifting platform 32 may perform the above processes while descending from the origin position.

  According to the driving state diagnosis device and the driving state diagnosis method of the rope body in the elevator type parking apparatus configured as described above, the driving force by the rotation motor 42a is transmitted to the wire rope 48 via the drive sheave 44, and the lift platform When the wire rope 48 is reduced in diameter or the drive sheave 44 is worn, the rotary motor 42a required to raise and lower the elevator platform 32 between the floors (between a plurality of reference height positions). The amount of rotation varies. Therefore, based on the detection means including the detection unit Z01 and the plate to be detected ST01 and the output result from the pulse generator 43, the rotation amount of the rotary motor 42a is obtained between the timings when the lift 32 detects each floor height, and the rotation By diagnosing the driving status of the wire rope 48 and the driving sheave 44 based on the floor height ΔLax calculated according to the amount, the driving status can be easily diagnosed and can be automatically diagnosed. .

  More specifically, in the past, regardless of the driving conditions of the wire rope 48 and the drive sheave 44, maintenance personnel enter the machine room 11 of the parking tower 10 at regular intervals, and measure calipers, curved scales, and dedicated measurements. The diameter of the plurality of wire ropes 48 is measured using a tool or the like, and the amount of sinking of the wire ropes 48 in the plurality of sheave grooves 44a is measured. And these inspection operations required a long time. However, according to the present drive condition diagnosis apparatus and diagnosis method, by raising the lifting platform 32 from the ground floor, it is possible to automatically measure in a short time a malfunction due to the reduced diameter of the wire rope 48 or wear of the sheave groove 44a. Then, when a problem is diagnosed outside the above-mentioned reference range, a careful inspection work by a maintenance staff may be performed for the first time.

  In particular, when it is determined that the floor height ΔLax corresponding to the rotation amount between the respective timings is outside the range of the predetermined reference value ΔLx ± β set in advance, the failure determination of the driving situation is performed. Since it outputs, a failure can be judged automatically.

  In the present embodiment, the number of pulses PN0 and PNx is converted into a value corresponding to L0 and Lx indicating the amount of increase corresponding to the number of pulses, and the above-described diagnosis processing is performed, but this is not necessarily required. The allowable range may be determined based on the number of pulses PN0 and PNx, and the teaching process and the drive status diagnosis process may be performed. In the present embodiment, the floor height value ΔL between the first floor above the ground and each floor is calculated and the diagnosis process is performed based on this, but this is not necessarily required. For example, the diagnosis processing may be performed by obtaining the number of pulses between the floors or the amount of elevation corresponding to the number of pulses.

  In particular, the number of pulses between the origin floor, which is the first floor above the ground, and the amount of elevation corresponding to the number of pulses may be obtained, and the diagnosis process may be performed in the same manner as described above. Even in this case, since the separation distance between the origin floor, which is the first floor above ground, and the top floor is the largest, the influence of the decrease in the drive radius of the drive sheave 44 is the same as the origin floor set on the first floor above ground. Since it has the greatest influence on the fluctuation of the number of pulses between the top floors, the diagnosis process can be performed relatively accurately. Further, since the detection and diagnosis processing between the floors can be omitted, the diagnosis processing can be performed relatively quickly.

  In addition, the parking device control unit 50 acquires the rotation amount of the rotary motor 42a between the detection timings by the detection means, that is, the pulse numbers PN0 and PNx in accordance with the allowable range setting command, and based on the pulses PN0 and PNx. Since ΔLx ± β is obtained, an appropriate allowable range can be set according to the actual installation state of the elevator parking apparatus.

<Modification>
The tolerance β for each floor height ΔLx may be a different value for each floor height ΔLx. In addition, the difference in the upper limit direction and the tolerance in the lower limit direction may be set separately around each floor height ΔLx. This β is the type of elevator parking device, the number of units accommodated, the type of vehicles to be accommodated, whether it is a tower type or a structure built in a building, whether it is a type in which the pallet 24 turns, etc. Depending on empirical and experimental settings.

  In the present embodiment, the detection means includes a detection unit Z01 provided on the lifting platform 32 and a detection plate ST01 provided on the support column 14RR. It may be provided.

  In the above embodiment, the maintenance staff operates the operation panel 80 in the parking tower 10 to execute the drive status diagnosis process. However, the above processes are performed by remote operation via the communication network 92. You may make it let. That is, a command for performing a drive status diagnosis process by designating the date and time is input through a remote maintenance computer 94 or a portable terminal 96 in an external remote maintenance center or the like. The designated date and time is preferably set within a non-operating time zone in which the user is assumed not to use such as midnight. And the parking apparatus control part 50 performs a drive condition diagnostic process at the designated date.

  This diagnosis result is printed by a printer and provided to maintenance personnel at a later time, or is provided to maintenance personnel from the communication network 92 through the portable terminal 96, for example. Thereby, when the maintenance worker performs the periodic maintenance work of the elevator parking apparatus, the procedure to be executed by performing the driving condition diagnosis process can be omitted, and the maintenance work can be performed in a short time.

  The diagnosis result is provided from the communication network 92 to the remote maintenance computer 94, for example. Then, at the remote maintenance center, it can be used for the purpose of creating a maintenance plan such as whether the center maintenance staff can continue operation based on the diagnosis result or whether a repair plan is necessary.

  Further, the entry / exit door may be opened at the stage of executing the driving condition diagnosis process. Moreover, you may make it perform a diagnostic process by raising / lowering the raising / lowering stand 32 by manual operation. When the entry / exit door remains open, it is convenient for performing diagnostic processing while visually monitoring the lifting / lowering state of the lifting / lowering platform 32.

It is a figure which shows the whole structure of an elevator type parking apparatus. It is a figure which shows the elevator apparatus part in an elevator type parking apparatus same as the above. It is a side view which shows the means to detect whether the raising / lowering base reached each said reference height position. It is a top view which shows the means to detect whether the raising / lowering base reached each said reference height position. It is a block diagram which shows the electric constitution of an elevator type parking apparatus. It is a flowchart which shows a teaching process. It is a flowchart which shows a drive condition diagnostic process. It is a figure which shows the relationship between the on-off timing of the detection part Z01, pulse number PN0, PNx, and floor height (DELTA) Lx. It is a figure which shows the problem in an elevator type parking apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Parking tower 14FR, 14FL, 14RR, 14RL Post 17 Entrance floor 20 Parking shelf 30 Elevator device 32 Lifting table 40 Lifting drive device 42a Rotating motor 43 Pulse generator 44 Drive sheave 44a Sheave groove 48 Wire rope 50 Parking device control part 51 Storage means 83 Inspection mode selector switch ST01, ST02 Detected plate Z01, Z02 detector β tolerance

Claims (7)

Vehicle storage means having a hoistway extending in the vertical direction and a plurality of parking shelves provided in a hierarchy along the hoistway;
A lifting platform provided so as to be movable up and down along the hoistway;
A cable body for suspending the lifting platform;
An elevating drive device comprising: a rotation drive unit; and a rotation transmission unit that is wound around the cable body and transmits a driving force from the rotation drive unit to the cable body to move the elevator table up and down.
Detecting means for detecting each timing at which the elevator reaches a plurality of reference height positions set in the hoistway;
A rotational drive amount acquisition means for acquiring a rotational amount by the rotational drive unit;
Based on the output results from the detection means and the rotation drive amount acquisition means, the rotation amount by the rotation drive unit is obtained between detection timings by the detection means, and the rope and the rotation transmission are determined based on the rotation amount. Diagnostic disconnection control means for diagnosing the driving state of the body,
A driving state diagnostic device for a rope body in an elevator type parking apparatus comprising: A driving state diagnostic device for a rope body in the elevator type parking apparatus according to claim 1,
When the diagnosis control unit determines that the amount of rotation by the rotation drive unit between the detection timings by the detection unit is outside a predetermined allowable range set in advance, the diagnosis control unit outputs a drive status failure determination. A driving state diagnostic device for a rope body in an elevator parking device. A driving state diagnosis device for a rope body in the elevator type parking device according to claim 2,
The diagnosis control means obtains a rotation amount by the rotation drive unit between detection timings by the detection means in accordance with an allowable range setting command input via the input means, and sets a predetermined range before and after this to the allowable range. A driving state diagnosis device for a rope body in an elevator parking device to be set. It is the drive condition diagnostic device of the rope body in the elevator type parking device in any one of Claims 1-3,
The detection means includes a detector provided at one of a plurality of reference height positions in the elevator and the hoistway, and a detector provided on the other to detect the detector as the elevator is raised and lowered. A driving state diagnostic device for a rope body in an elevator type parking apparatus. A driving state diagnostic device for a rope body in the elevator type parking apparatus according to any one of claims 1 to 4,
The rotary drive amount acquisition means is a rotary encoder that detects the amount of rotation of the rotary drive unit, and is an apparatus for diagnosing a driving state of a rope body in an elevator parking apparatus. A driving state diagnostic device for a rope body in the elevator type parking apparatus according to any one of claims 1 to 5,
The plurality of reference height positions are set in a position corresponding to the first floor above the ground and a position corresponding to the top floor. Vehicle storage means having a hoistway extending in the vertical direction and a plurality of parking shelves provided in a hierarchy along the hoistway;
A lifting platform provided so as to be movable up and down along the hoistway;
A cable body for suspending the lifting platform;
An elevating drive device comprising: a rotation drive unit; and a rotation transmission unit that is wound around the cable body and transmits a driving force from the rotation drive unit to the cable body to move the elevator table up and down.
A driving state diagnosis method for a rope body in an elevator type parking apparatus comprising:
The amount of rotation by the rotation drive unit is obtained between each timing when the lifting platform reaches a plurality of reference height positions set in the hoistway, and the rope body and the rotation transmission body are driven based on the rotation amount. A method for diagnosing a driving state of a rope body in an elevator type parking apparatus for diagnosing the situation.

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