JP5950705B2 - Elevator door apparatus and door diagnosis method - Google Patents

Description

  The present invention relates to an elevator door device and a door diagnosis method for diagnosing an abnormal state of an elevator door.

  If the elevator doors continue to be used, smooth opening and closing may be hindered by the effects of dust accumulated on the sill, foreign matter adhering to the doors, deterioration and wear of parts, changes in installation conditions, and the like. Therefore, elevator doors are regularly inspected by skilled maintenance personnel, and maintenance is performed so that the opening and closing operations are always performed smoothly.

  In addition, an elevator door diagnosis device has been proposed that automatically performs door inspection based on the amount of fluctuation in electric motor driving force when the elevator door is opened and closed, and determines whether maintenance is necessary (for example, Patent Document 1). reference).

JP 2007-70102 A

However, the prior art has the following problems.
The electric motor driving force when the elevator door is opened and closed varies to some extent even when the door is in a normal state. Therefore, in order to determine the necessity of maintenance based on the amount of fluctuation of the motor driving force, the fluctuation range of the motor driving force when maintenance is not necessary (hereinafter referred to as “normal driving force range”). When the motor driving force deviates from the normal driving force range, it is necessary to diagnose that the elevator door is in an abnormal state and determine that maintenance is necessary.

  Here, as for the door of an elevator, generally, the car door provided in the car and the landing door provided in the landing are mutually independent. The car door is driven to open and close by an electric motor provided in the car, and the landing door engages with the car door when the car reaches the predetermined floor and is driven to open and close in conjunction with the opening and closing of the car door. Hereinafter, when the car door and the landing door are collectively referred to, they are simply referred to as a door.

  Therefore, the landing doors engaged with the car doors are different on each floor, so the driving force required to open and close the doors varies depending on the specifications of the landing doors, and both doors (the car door and the landing door) are driven to open and close. The driving force required to do this varies from floor to floor due to differences in specifications of the landing doors to be engaged.

  When the fluctuation in driving force due to the specification difference of the landing door is included in the normal driving force range as a normal fluctuation, the range of the motor driving force for diagnosing that the door is in a normal state is widened. However, there is a problem that the door may be opened or closed abnormally or the door cannot be opened or closed before it deviates from the normal driving force range.

  On the other hand, when the width of the normal driving force range is estimated to be small, even if the door is in a normal state when engaged with a landing door with a large driving force required for opening and closing, the motor driving force is normally driven. There is a problem in that it is possible to deviate from the force range and to judge that the door is in an abnormal state and to determine that maintenance is necessary.

  In order to solve such a problem, it is possible to appropriately diagnose the door state by setting a normal driving force range for each landing door to be engaged. However, in this case, there is a problem that a memory having a large capacity for storing a plurality of normal driving force ranges is required, and the amount of data communicated at the time of abnormality is enormous.

  In addition, when learning the magnitude of the motor driving force required to open and close the door while the door is in a normal state, and comparing the magnitude of the motor driving force at the time of diagnosis with each other, diagnose the door abnormal condition. Therefore, since it is necessary to learn the electric motor driving force necessary for opening and closing the door, there is a problem that learning itself takes time.

  The present invention has been made to solve the above-described problems, and can suppress the memory capacity and the communication data amount, and can diagnose the abnormal state of the door with high accuracy by learning in a short time. An object is to obtain an elevator door device and a door diagnosis method.

An elevator door device according to the present invention includes a car door provided in an elevator car, an electric motor that opens and closes the car door, a landing door provided in the landing, and a closer that applies a door closing force to the landing door. And the average value of the door engaging part that links the opening / closing operation of the landing door with the opening / closing operation of the car door, and the electric motor driving force when the door is opened and the electric motor driving force when the door is closed are stored as the force applied by the closer. calculates a door closing force variation value based on the force given by the closer, estimates the loss variation value from the door closing force variation values, needed to drive both the landing door and car door in conjunction with the door engagement unit The normal driving force range that is the allowable fluctuation range of the motor driving force is set, the motor driving force is calculated based on the current supplied to the motor, the motor driving force, the door closing force fluctuation value, and the loss fluctuation value and the mixture was positive Compares the driving force range, when the motor driving force is outside the normal driving force range, those having a door diagnostic unit for diagnosing an abnormal state of the door of the elevator, the.

The elevator door diagnosis method according to the present invention includes a car door provided in an elevator car, an electric motor that drives the car door to open and close, a landing door provided in the landing, and a force in the door closing direction on the landing door. A door diagnosis method for an elevator comprising a closing door that provides a door and an opening / closing operation of a landing door interlocked with an opening / closing operation of a car door, the electric motor driving force when the door is opened and the electric motor when the door is closed The average value of the driving force is stored as the force given by the closer, the door closing force fluctuation value is calculated based on the force given by the closer, and the loss fluctuation value is estimated from the door closing force fluctuation value; Based on the setting step to set the normal driving force range, which is the allowable fluctuation range of the motor driving force required to drive both the landing door and the car door linked by the joint, and the current supplied to the motor A calculating step of calculating a machine driving force, an electric motor driving force, is compared with the normal driving force range plus the door closing force variation and loss variation value, when the motor driving force is outside the normal driving force range And a diagnostic step for diagnosing an abnormal state of the elevator door.

According to the elevator door device and the door diagnosis method according to the present invention, the average value of the electric motor driving force when the door is opened and the electric motor driving force when the door is closed is stored as the force given by the closer, and the force given by the closer is stored. Based on this, the door closing force fluctuation value is calculated, the loss fluctuation value is estimated from the door closing force fluctuation value (estimation step), and it is necessary to drive both the landing door and the car door linked by the door engaging portion. set the normal driving force range is an allowable variation range of the electric motor drive force (setting step), based on the current supplied to the motor, thereby calculating the motor drive force (operational steps), the electric motor drive force, door closing by comparing the normal driving force range of force variation and loss variation value, when the motor driving force is outside the normal driving force range, to diagnose the abnormal state of the door of the elevator (diagnostic steps) door diagnostic It is equipped with a.
Therefore, the memory capacity and the communication data amount can be suppressed, and the abnormal state of the door can be diagnosed with high accuracy by learning in a short time.

It is a block diagram which shows the door apparatus of the elevator which concerns on Embodiment 1 of this invention. It is a block block diagram which shows the whole door apparatus of the elevator which concerns on Embodiment 1 of this invention. It is a flowchart which shows the general | schematic operation | movement procedure of the door diagnostic part of the door apparatus of the elevator which concerns on Embodiment 1 of this invention. It is a flowchart which shows the procedure of the initial value learning in the door diagnostic part of the door apparatus of the elevator which concerns on Embodiment 1 of this invention. It is explanatory drawing which illustrates the electric motor drive force in the initial value learning in the door diagnostic part of the door apparatus of the elevator which concerns on Embodiment 1 of this invention. It is explanatory drawing which illustrates the door drive loss in the initial value learning in the door diagnostic part of the door apparatus of the elevator which concerns on Embodiment 1 of this invention. It is explanatory drawing which illustrates the door closing force of the door in the initial value learning in the door diagnostic part of the door apparatus of the elevator which concerns on Embodiment 1 of this invention. It is a flowchart which shows the procedure of the door state diagnosis in the door diagnostic part of the door apparatus of the elevator which concerns on Embodiment 1 of this invention. In the elevator door device according to Embodiment 1 of the present invention, it is an explanatory view illustrating the door drive loss when the door drive loss increases due to an abnormality. FIG. In the elevator door device according to Embodiment 1 of the present invention, it is an explanatory view illustrating an electric motor driving force when a door driving loss increases due to an abnormality. FIG. In the elevator door device according to Embodiment 1 of the present invention, it is an explanatory view illustrating the door drive loss when the door drive loss varies depending on the specification. In the elevator door device according to Embodiment 1 of the present invention, it is an explanatory diagram showing a relationship between a landing door driving loss when the door is closed and a door closing force of the landing door when the door driving loss varies depending on specifications. In the elevator door device according to Embodiment 1 of the present invention, it is an explanatory view illustrating the door closing force when the door drive loss varies depending on the specification. In the elevator door device according to Embodiment 1 of the present invention, it is an explanatory diagram showing a relationship between an electric motor driving force and a normal driving force range when a door driving loss varies depending on specifications.

  Hereinafter, preferred embodiments of an elevator door device and a door diagnosis method according to the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts will be described with the same reference numerals.

Embodiment 1 FIG.
1 is a configuration diagram illustrating an elevator door device according to Embodiment 1 of the present invention. Here, the front view which looked at the door apparatus of the elevator from the landing side is shown.

  In FIG. 1, the car door 1 is driven to open and close by a door drive unit 3 to which an electric motor 2 is connected. The car door 1 is suspended from a hanger rail 6 of the door drive unit 3 by a hanger roller 5 attached to the hanger plate 4, and the car door 1 is opened and closed by rolling the hanger roller 5 on the hanger rail 6. .

  An endless belt 9 is wound between the driving pulley 7 of the door driving unit 3 and an idler pulley 8 provided at a symmetrical position in the driving pulley 7 and the door driving unit 3. Further, the electric motor 2 is connected to the driving pulley 7, and the rotation of the electric motor 2 is transmitted to the driving pulley 7.

  A driving-side holding member 10a that holds the lower part of the belt 9 is attached to the driving-side hanger plate 4a of the hanger plate 4, and a driven-side holding member 10b that holds the upper part of the belt 9 is attached to the driven-side hanger plate 4b. It has been. Moreover, the leg 11 is attached to the lower end part of the car door 1, and the leg 11 fits into the groove | channel of the car sill 12, and guides the lower end part when the car door 1 opens and closes.

  The car door 1 is provided with a door engaging portion 13, and the landing door (not shown) is provided with a driving roller 14 that is engaged by the door engaging portion 13 when the door is opened and closed. . When the car door 1 is fully closed, the engagement vane 13a of the door engagement portion 13 and the drive roller 14 are not engaged, and do not collide when the elevator moves up and down.

  On the other hand, when the door opening operation is started by the door drive unit 3 to which the electric motor 2 is connected, the belt 9 wound between the driving pulley 7 and the idler pulley 8 is moved in the left-right direction by the operation of the electric motor 2. The car door 1 is moved and moved in the door opening direction via the drive side gripping member 10a and the driven side gripping member 10b. Thereby, the car door 1 starts to open from the fully closed state.

  At this time, when the car door 1 moves by the gap between the engagement vane 13a and the drive roller 14, the engagement vane 13a of the door engagement portion 13 engages with the drive roller 14 of the landing door, and the car door 1 The door opening power is transmitted to the landing door, and the car door 1 and the landing door are interlocked to perform the door opening operation. Note that the movement of the door to the fully open position is detected by the door fully open detection switch 15a.

  On the other hand, when the door is closed, the operation at the time of opening the door is reversed, and the car door 1 and the landing door start to close in conjunction with the engagement vane 13a and the driving roller 14 engaged. . At this time, before the car door 1 is fully closed, the landing door is fully closed earlier than the car door 1 by the gap between the engagement vane 13a and the driving roller 14, and the engagement is released. Thereafter, only the car door 1 is released. Is driven to the fully closed state.

  Note that the movement of the door to the fully closed position is detected by the door fully closed detection switch 15b. In addition, the landing door is given a force in the door closing direction by a closer (not shown). Hereinafter, the door full open detection switch 15a and the door full close detection switch 15b are collectively referred to as a door full open / full close detection switch 15.

  FIG. 2 is a block configuration diagram showing the entire elevator door device according to Embodiment 1 of the present invention. Here, a system configuration of an elevator door device is shown.

  In FIG. 2, the elevator door device includes an electric motor 2 and a door driving unit 3 to which the electric motor 2 is connected and which drives the door of the elevator to open and close. The electric motor 2 opens and closes the car door 1 via the driving pulley 7 of the door driving unit 3 shown in FIG. The electric motor 2 is directly connected to an encoder 16 that generates a pulse corresponding to the rotational speed.

  The door drive unit 3 includes a door fully open / closed switch comprising a door fully open detection switch 15a for detecting that the door has moved to the fully open position, and a door fully closed detection switch 15b for detecting that the door has moved to the fully closed position. A detection switch 15 is provided.

  The elevator door device also includes a door control unit 20 that controls the opening and closing of the door by driving the electric motor 2, a door diagnosis unit 30 that diagnoses an abnormal state of the door and outputs a diagnosis result, a door control unit 20, and a door diagnosis. The operation switching unit 17 that outputs an opening / closing command to the unit 30, the diagnosis result reporting unit 18 that reports the normal or abnormal diagnostic result in the door diagnostic unit 30 to the maintenance center, and the current value of the current supplied to the motor 2 A current measuring device 19 for measuring is provided.

  Here, the door full open / close detection switch 15, the encoder 16 and the current measuring device 19 output the door position detection signal, the generated pulse signal and the motor current to the door control unit 20 and the door diagnosis unit 30, respectively. Further, the operation switching unit 17 outputs an opening / closing command for normal opening / closing, diagnostic opening / closing, or initial learning opening / closing to the door control unit 20 and the door diagnosis unit 30.

  The door control unit 20 is a part that performs door control of normal opening / closing, diagnostic opening / closing, or initial learning opening / closing, and includes a speed command generation unit 21, a speed calculation unit 22, a speed control unit 23, and a current control unit 24.

  The speed command generation unit 21 stores opening / closing speed command data corresponding to each of normal opening / closing, diagnostic opening / closing, and initial learning opening / closing, and matches the opening / closing command of normal opening / closing, diagnosis opening / closing, or initial learning opening / closing from the operation switching unit 17. Generate a speed command. The speed calculation unit 22 calculates the rotation speed of the electric motor 2 based on the pulse signal from the encoder 16.

  The speed control unit 23 captures the speed command from the speed command generation unit 21 and the rotation speed from the speed calculation unit 22 while checking the reference position of the door based on the detection signal from the door full open / close detection switch 15. A speed control command is output so that the electric motor 2 operates in accordance with the command value. The current control unit 24 feeds back the motor current from the current measuring device 19 based on the speed control command from the speed control unit 23 and controls the current value of the current supplied to the motor 2.

  The door diagnosis unit 30 is a part that diagnoses an abnormal state of the door and outputs a diagnosis result, and includes a command state determination unit 31, an opening / closing position calculation unit 32, a driving force calculation unit 33, a memory unit 34, and an abnormality diagnosis unit 35. Have.

  The command state determination unit 31 determines whether the opening / closing command from the operation switching unit 17 is in a normal opening / closing command state, a diagnostic opening / closing command state, or an initial learning opening / closing command state, The command state is stored in the memory unit 34.

  The opening / closing position calculation unit 32 calculates the opening / closing position of the door during the diagnostic opening / closing of the door based on the pulse signal from the encoder 16 and the detection signal from the door full open / close detection switch 15. The driving force calculator 33 calculates the driving force of the electric motor 2 as the electric motor driving force based on the current value of the current supplied to the electric motor 2 measured by the current measuring device 19.

  The memory unit 34 stores determination result data of the command state determination unit 31, opening / closing position data calculated by the opening / closing position calculation unit 32, and driving force data calculated by the driving force calculation unit 33. In addition, the abnormality diagnosis unit 35 refers to the opening / closing position data and the driving force data stored in the memory unit 34 to diagnose whether the door state is normal or abnormal, and the diagnosis result is notified to the diagnosis result reporting unit 18. Output to.

Next, a schematic operation procedure of the door diagnosis unit of the elevator door device according to Embodiment 1 of the present invention will be described with reference to the flowchart of FIG.
First, the door diagnosis unit 30 determines whether or not an opening / closing command for initial learning opening / closing has been received (step S1). The opening / closing command for the initial learning opening / closing is output from the operation switching unit 17 to the door diagnosis unit 30 when the elevator power is turned on.

  If it is determined in step S1 that an opening / closing command for initial learning opening / closing has not been received (ie, No), the process returns to step S1 again to determine whether an opening / closing command for initial learning opening / closing has been received.

  On the other hand, if it is determined in step S1 that an opening / closing command for initial learning opening / closing has been received (ie, Yes), the door diagnosis unit 30 performs initial value learning (step S2).

  Subsequently, after initial value learning, the door diagnosis unit 30 determines whether or not a diagnosis opening / closing command is received (step S3). The diagnosis opening / closing command indicates whether the operation switching unit 17 outputs based on a signal from the maintenance center, or whether the operation switching unit 17 can open and close the door at regular intervals to make a diagnosis. There are cases where it is judged and output.

  If it is determined in step S3 that the diagnostic opening / closing command has not been received (that is, No), the process returns to step S3 again to determine whether the diagnostic opening / closing command has been received.

  On the other hand, if it is determined in step S3 that an opening / closing command for diagnosis opening / closing has been received (ie, Yes), the door diagnosis unit 30 performs door state diagnosis (step S4), and performs door state diagnosis. Then, it returns to step S3 again and it is determined whether the opening / closing command of diagnostic opening / closing is received.

  Subsequently, referring to the explanatory diagrams of FIGS. 5 to 7 together with the flowchart of FIG. 4, the initial value learning (step S2 of FIG. 3) in the door diagnostic unit of the elevator door device according to the first embodiment of the present invention. The procedure will be described.

First, the speed command generation unit 21 that receives the opening / closing command from the operation switching unit 17 controls the electric motor 2 to drive the door in the door opening direction.
At this time, the door diagnosis unit 30 stores the driving force data and the opening / closing position data at the time of the door opening operation in the memory unit 34 in synchronization so that the opening / closing position and the driving force correspond to each other (hereinafter, the stored data is referred to as “stored data”). (Referred to as “initial opening data”) (step S21).

Subsequently, the speed command generator 21 controls the electric motor 2 to drive the door in the door closing direction.
At this time, the door diagnosis unit 30 stores the driving force data and the opening / closing position data at the time of the door closing operation in the memory unit 34 in synchronization so that the opening / closing position and the driving force correspond to each other (hereinafter, the stored data is referred to as “stored data”). (Referred to as “initial door closing data”) (step S22).

  Next, the door diagnosis unit 30 calculates a door closing force (hereinafter referred to as “initial door closing force”) corresponding to the opening / closing position in the state from the initial door opening time data and the initial door closing time data, The data is stored in the memory unit 34 (step S23), and the process of FIG.

  FIG. 5 is an explanatory diagram illustrating the electric motor driving force in the initial value learning in the door diagnostic unit of the elevator door device according to Embodiment 1 of the present invention. FIG. 5 shows the motor driving force depending on the opening / closing position for the data stored in step S21 and step S22 of FIG. In FIG. 5, (1) shows the data saved in step S21, and (2) shows the data saved in step S22.

  Note that (1) and (2) in FIG. 5 are different because the door driving loss is reversed when the opening and closing direction is reversed. Here, as shown in FIG. 6, the direction of the door driving loss is reversed between (c) when the door is opened and (d) when the door is closed.

Here, the force that the closer gives to the landing door in the door closing direction is the initial door closing force. Further, in step S23 of FIG. 4, (1) and (2) of FIG. 5 are added and averaged at each open / closed position to eliminate the influence of the door driving loss, and both in the initial state. Only the total door closing force (initial door closing force) of the door is taken out.

This ensures that it is not necessary or predetermined or learned forces closer, suppresses the memory capacity and the amount of communicated data, it is possible to shorten the learning time.

  FIG. 7 is an explanatory view illustrating the door closing force in the initial value learning in the door diagnostic unit of the elevator door device according to Embodiment 1 of the present invention. In FIG. 7, the total door closing force of both doors shown in (3) corresponds to this initial door closing force.

  The total door closing force of both doors shown in (3) of FIG. 7 is a door closing force obtained by adding (a) the door closing force of the landing door and (b) the door closing force of the car door 1. A predetermined door closing force is applied to both the car door 1 and the landing door, and FIG. 7 illustrates characteristics when the door closing force of the car door 1 increases in the vicinity of the fully closed position of the door. .

  Next, the procedure of door condition diagnosis (step S4 in FIG. 3) in the door diagnosis unit of the elevator door device according to Embodiment 1 of the present invention will be described with reference to the flowchart of FIG.

  First, the procedure of steps S41 to S43 is the same as the procedure of steps S21 to S23 of FIG. 4 described above. However, the door diagnosis unit 30 stores the data stored as the initial door opening data as “diagnostic door opening data” and the data stored as the initial door closing data as “diagnostic door closing data”. The data stored as the initial door closing force is stored in the memory unit 34 as “diagnostic door closing force”.

  Subsequently, the door diagnostic unit 30 calculates an increment from the initial door closing force to the diagnostic door closing force (deviation between the diagnostic door closing force and the initial door closing force) as a door closing force fluctuation value, and stores it in the memory unit 34. Save (step S44).

  Next, the door diagnosis unit 30 performs abnormality diagnosis due to door drive loss. That is, the door diagnosis unit 30 determines whether or not the electric motor driving force has deviated from the normal driving force range (step S45).

  Here, the fluctuation range of the normal driving force range may be determined from the fluctuation range of the frictional resistance value in each part of the door device of the elevator, or may be determined from statistical data measured by an actual elevator.

  If it is determined in step S45 that the motor driving force has fluctuated outside the normal driving force range (ie, Yes), the door diagnosis unit 30 outputs an abnormal signal (step S46), and FIG. Terminate the process.

  On the other hand, when it is determined in step S45 that the electric motor driving force does not change beyond the normal driving force range (that is, No), the door diagnosis unit 30 outputs a normal signal (step S47). ), The process of FIG.

Hereinafter, the case where the motor driving force is increased will be specifically described with reference to FIGS.
FIG. 9 is an explanatory view illustrating the door drive loss when the door drive loss increases due to an abnormality in the elevator door device according to Embodiment 1 of the present invention.

  In FIG. 9, for example, a door driving loss increases due to various abnormalities such as a curing sheet of an elevator design being sandwiched between doors, debris being accumulated on a sill, or poor standing due to a collision with a door. At this time, the door driving loss works in the direction opposite to the door moving direction, so that the door driving loss at the time of abnormality increases in the door closing direction when the door is opened and in the door opening direction when the door is closed.

FIG. 10 is an explanatory diagram illustrating the electric motor driving force when the door driving loss increases due to an abnormality in the elevator door device according to Embodiment 1 of the present invention. As shown in FIG. 10, when the door drive loss increases by an abnormal, the motor drive force is also increased.

  In contrast, FIG. 11 is an explanatory view illustrating the door drive loss when the door drive loss varies depending on the specifications in the elevator door device according to Embodiment 1 of the present invention. FIG. 11 shows a case where the door driving loss fluctuates due to a difference in specifications by changing the landing door to be engaged. The door driving loss increases when the door weight increases, the door legs 11 increase, or the adhesion between the door and the sill increases.

  Here, the increase in the door driving loss is not different as shown in (c ′) and (d ′) of FIG. 9 and (c ″) and (d ″) of FIG. It is difficult to clearly distinguish whether the cause of the increase in door drive loss is due to an abnormality in the door or due to a change in the landing door to be engaged.

Accordingly, a method for distinguishing only the case where the door drive loss has increased due to an abnormality from among the events in which the door drive loss has increased will be described.
Usually, the landing door is latched in the door-closed state, and the latched door is opened and the landing door is opened by opening the engaged car door 1. That is, the landing door does not open on the floor where the car is not landing.

  During maintenance work, etc., the latch door is manually unlatched and the landing door is opened, but the landing door is closed by a closer to prevent it from falling into the hoistway when trying to get in by mistake. It is designed to close automatically when working.

  Here, in the case where the door is in a normal state, FIG. 12 shows the relationship between the landing door driving loss when the door is closed and the door closing force of the landing door when the door driving loss varies depending on the specification. First, when the landing door drive loss is small, the door closing force of the landing door of (a) is larger than the landing door drive loss of (D) when the door is closed, and automatically when the landing door is released. It can be closed.

  On the other hand, if the landing door drive loss when the door is closed increases from (D) to (D ′) due to a change in the landing door to be engaged, the door driving loss when the door is closed (D ′). It seems that the door closing force of the landing door of (a) is smaller than that, and the door cannot be closed.

  However, in order to prevent the landing door from being automatically closed, the door closing force of the landing door is designed to be larger than the landing door driving loss in accordance with the increase in the landing door driving loss. ) To (a ″), the door closing force of the landing door is increased.

  Thus, as shown in FIG. 12 as (D ′) and (a ″), the door closing force of the landing door is kept larger than the landing door driving loss when the door is closed. In a normal state, the landing door is automatically closed regardless of the specification of the landing door.

  As shown in FIG. 13, even if the landing door to be engaged is changed, the car door 1 does not change. Therefore, the door driving loss varies depending on the specification only for the landing door.

  FIG. 14 shows the electric motor driving force when the door driving loss increases due to the specifications of the landing door in the elevator door device according to Embodiment 1 of the present invention. In FIG. 14, when the door is opened, the motor driving force fluctuates as shown in (1) to (1 ″), and when the door is closed, (2) to (2 ″).

  Here, when the door is closed, the fluctuation direction of the door drive loss and the door closing force is the same, so the fluctuation amount is large, but when the door is closed, the fluctuation direction of the door drive loss and the door closing force is reversed. The amount is almost zero. Therefore, although the tendency is different from the increase in door drive loss due to the abnormality shown in FIG. 10, the abnormality cannot be diagnosed only by comparing the fluctuation amount of the motor driving force.

  Therefore, in the case of a landing door with a large door driving loss, pay attention to the fact that the door closing force is set higher as the door driving loss increases. From the door closing force fluctuation value, it depends on the specification of the engaged landing door. By estimating the door drive loss increase / decrease and adding it to the normal driving force range together with the door closing force fluctuation value, the determination is made in consideration of the influence of the door driving loss fluctuation due to the specifications of the landing door.

  As a specific diagnosis procedure, in step S45 of FIG. 8 for diagnosing an abnormal state of the door, a normal driving force range obtained by adding the door closing force fluctuation value and the loss fluctuation value estimated from the door closing force fluctuation value; Compare the motor driving force.

  In addition, the automatic door closing operation of the landing door is usually set by increasing the door closing force so as to compensate for the increase in the door driving loss due to the specification so as not to have an extremely strong force. Therefore, the door driving loss can be estimated as a magnitude equivalent to the door closing force fluctuation value. However, when an extremely strong force is set, it is necessary to estimate the door drive loss according to the design tendency.

  FIG. 14 also shows how the normal driving force range is changed as the motor driving force fluctuates due to the specification difference of the door driving loss. In FIG. 14, the variation tendency of the normal driving force range is the same as the door driving loss, and if the fluctuation due to a factor other than the specification difference does not affect the motor driving force, the difference in specification of the landing door There is no misjudgment of fluctuation due to On the other hand, when an abnormality other than the specification difference affects and deviates from the normal driving force range, it can be determined as an abnormality.

  Here, the procedure for diagnosing the abnormal state of the door using the electric motor driving force directly is shown, but the present invention is not limited to this. Subtract the door closing force and door drive loss fluctuation due to the specifications of the landing door from the fluctuation value from the initial value of the motor driving force, and compare the value with the width of the normal driving force range. Even when the comparison is made by adding an indirect processing procedure to the data comparison, such as determining that the abnormality is greater than the width, the same result and effect can be obtained.

  Moreover, since the difference in the door closing force of the landing doors in each floor can be understood from the design, when there is a sufficient capacity in the memory unit 34, the door closing force for each floor is stored in advance, so that FIG. The process can be simplified by omitting the steps S23 and S43 and S44 of FIG.

  In addition, the procedure for diagnosing an abnormal state of the door using the data for each door opening / closing position has been described. However, the diagnosis processing may be performed by focusing only on the data of the opening / closing position where failure (abnormality) is likely to occur. When the door closing force becomes a constant value regardless of the position, a value obtained by averaging the data for each opening / closing position may be used.

  In addition, when it is determined that the landing door can be automatically closed, the difference between the door closing force of the landing door and the landing door driving loss is set as the width of the normal driving force range so that the door state is When diagnosed as abnormal, it can be determined that the landing door cannot be automatically closed.

  Further, in the diagnosis process on a plurality of floors, when it is diagnosed that the door state is abnormal, it can be estimated that the landing door is abnormal and the result can be displayed. This is because the diagnosis process is performed by driving both the car door 1 and the landing door with one electric motor 2, so that if the door condition is diagnosed, either the car door 1 or the landing door is detected. This is because it is necessary to determine whether an abnormality has occurred. As a result, since it is rare that abnormalities occur simultaneously and suddenly at a plurality of doors, it is possible to determine which of the car door 1 and the landing door is abnormal with a high probability.

  Further, the door diagnosis unit 30 has been described as calculating the driving force of the electric motor 2 as the electric motor driving force based on the current value of the current supplied to the electric motor 2 measured by the current measuring device 19, but a torque meter or the like. The motor driving force may be detected using other sensors.

As described above, according to the first embodiment, the door diagnostic unit is based on the force given by the closer, and the electric motor driving force required to drive both the landing door and the car door linked by the door engaging unit. The normal driving force range that is the allowable fluctuation range of the motor is set, the electric motor driving force is calculated based on the current supplied to the electric motor, and the electric motor driving force is compared with the normal driving force range. When the normal driving force range is deviated, an abnormal state of the elevator door is diagnosed. In other words, the normal driving force range is determined based on the force applied by the closer (the door closing force of the landing door) without expecting fluctuation due to the specification difference of the landing door in the normal driving force range.
Therefore, the memory capacity and the communication data amount can be suppressed, and the abnormal state of the door can be diagnosed with high accuracy by learning in a short time.

  1 Car door, 2 Electric motor, 3 Door drive unit, 4 Hanger plate, 4a Drive side hanger plate, 4b Driven side hanger plate, 5 Hanger roller, 6 Hanger rail, 7 Drive side pulley, 8 Idler pulley, 9 Belt, 10a Drive side grip Member, 10b driven side gripping member, 11 legs, 12 cage sill, 13 door engaging portion, 13a engaging vane, 14 drive roller, 15 door full open / full close detection switch, 15a door full open detection switch, 15b door full close detection Switch, 16 Encoder, 17 Operation switching unit, 18 Diagnosis result reporting unit, 19 Current measuring device, 20 Door control unit, 21 Speed command generation unit, 22 Speed calculation unit, 23 Speed control unit, 24 Current control unit, 30 Door diagnosis Unit, 31 command state determination unit, 32 opening / closing position calculation unit, 33 driving force calculation unit, 34 Memory part, 35 Abnormality diagnosis part.

Claims (2)

A car door provided in the elevator car,
An electric motor for opening and closing the car door;
A landing door provided at the landing,
A closer for applying a closing force to the landing door;
A door engaging portion that links the opening / closing operation of the landing door with the opening / closing operation of the car door;
An average value of the electric motor driving force when the door is opened and the electric motor driving force when the door is closed is stored as a force given by the closer, and a door closing force fluctuation value is calculated based on the force given by the closer, A normal driving force range that is an allowable fluctuation range of the electric motor driving force required to drive the landing door and the car door that are linked by the door engaging portion by estimating the loss fluctuation value from the door closing force fluctuation value. And calculating the electric motor driving force based on the current supplied to the electric motor, and the normal driving force range obtained by adding the electric motor driving force, the door closing force fluctuation value, and the loss fluctuation value. A door diagnosis unit that diagnoses an abnormal state of the door of the elevator when the motor driving force deviates from the normal driving force range;
An elevator door device comprising: A car door provided in the elevator car,
An electric motor for opening and closing the car door;
A landing door provided at the landing,
A closer for applying a closing force to the landing door;
An elevator door diagnosis method comprising: a door engaging portion that links an opening / closing operation of the landing door with an opening / closing operation of the car door,
An average value of the electric motor driving force when the door is opened and the electric motor driving force when the door is closed is stored as a force given by the closer, and a door closing force fluctuation value is calculated based on the force given by the closer, An estimation step for estimating a loss fluctuation value from a door closing force fluctuation value ;
A setting step for setting a normal driving force range that is an allowable fluctuation range of an electric motor driving force required to drive both the landing door and the car door linked by the door engaging portion;
A calculation step of calculating the electric motor driving force based on a current supplied to the electric motor,
When the electric motor driving force is compared with the normal driving force range obtained by adding the door closing force fluctuation value and the loss fluctuation value, and the electric motor driving force deviates from the normal driving force range, A diagnostic step for diagnosing an abnormal state of the door;
An elevator door diagnosis method characterized by comprising:

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