JP2019099316A - Elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator capable of preventing erroneous detection as normal even when a gap is generated in an upper end portion or a lower end portion of a door portion. An elevator includes a car, a door portion 11A, an upper detection switch 40, a lower detection switch 40, and a control unit. The upper door detection switch 40 outputs an upper door closing detection signal when it detects that the door portion 11A has moved to the closed end position T1 at the upper end portion 11a in the vertical direction of the door portion 11A. The lower detection switch 50 outputs a lower door closing detection signal when it detects that the door portion 11A has moved to the closed end position T1 at the lower end portion 11b in the vertical direction of the door portion 11A. When the control unit receives both the upper door closing detection signal and the lower door closing detection signal, the control unit determines that the car can be moved up and down. [Selection diagram] Fig. 3

Description

  The present invention relates to an elevator that detects the opening and closing of a door portion of a car and a door portion provided on each floor of a building structure.

  An elevator is provided with an entrance and exit on each floor of a building structure for people and things to get on and off. Similarly, the car on which people and things are placed is also provided with openings through which people and things come and go. The opening part of this entrance / exit or a car is provided with the door part which can be opened and closed, respectively.

  Further, the door portion is provided with a detection switch for detecting a closed state of the door portion (hereinafter referred to as "door closed"). As a technique which detects the opening / closing state of a door part using a detection switch, there exists a thing as described in patent document 1, for example. According to this patent document 1, the operation control circuit is sent to the operation control circuit only when the operation permission determination circuit receives the full closure confirmation signal (ON signal) from both the hold all closure confirmation circuit and the car door total closure confirmation circuit. A technique for outputting an operation permission command is described. Then, when a state occurs in which the input signal from the holder totally closed confirmation circuit and the input signal from the car door fully closed confirmation circuit do not coincide with each other when the car door is opened or closed, one of the holder switch and the car door switch An operation prohibition command is output, assuming that either is abnormal.

  Further, as another technique for detecting the open / close state of the door, for example, there is one as described in Patent Document 2. In this patent document 2, a motor generating a driving force for opening and closing a plurality of car doors, a transmission mechanism for transmitting the driving force of the motor to the car doors and interlockingly opening and closing, and a rotation amount of the motor And a pulse generator for generating a corresponding pulse signal. Further, in Patent Document 2, a first switch for detecting that one of the car doors has reached the first reference point, and a second for detecting that the other of the car doors has reached the second reference point And a switch is described.

JP 2007-223730 A JP 10-67480 A

  Also, if dust or dirt accumulates on the door rail or door sill due to use over time, the open / close operation is performed with the door portion inclined. Therefore, even if the upper end portion of the door portion is closed, a gap may be generated at the lower end portion of the door portion. However, in the techniques described in Patent Document 1 and Patent Document 2, the detection switch is provided only at the upper end of the door portion. Therefore, even if the upper end portion of the door portion is closed but a gap is generated at the lower end portion of the door portion, it is judged that the door portion is closed similarly to the normal state, and the car departs. Had the problem of

  An object of the present invention is to provide an elevator capable of preventing erroneous detection as normal even in a state in which a gap is generated at an upper end portion or a lower end portion of a door in consideration of the above-mentioned problems.

  In order to solve the above problems and achieve the object, an elevator includes a car, a door, an upper detection switch, a lower detection switch, and a controller. The car moves up and down the hoistway provided in the building structure. The door portion covers the opening of the car or the entrance provided at each floor of the building structure in an openable and closable manner. The upper detection switch detects an upper door closing detection signal when it detects that the door portion has moved to the closed end position, which is a closed position covering the opening or the entrance at the upper end in the vertical direction of the door portion. Output The lower detection switch outputs a lower door close detection signal when detecting that the door has moved to the closed end position at the lower end in the vertical direction of the door. The control unit determines whether to move the car up and down based on the upper door closing detection signal and the lower door closing detection signal. Further, the control unit determines that the elevator car can be moved up and down when both the upper door closing detection signal and the lower door closing detection signal are received.

  According to the elevator of the above configuration, it is possible to prevent erroneous detection as normal even in a state where a gap is generated in the upper end portion or the lower end portion of the door.

It is a schematic block diagram showing an elevator concerning an example of an embodiment. It is a front view showing a door unit of a car concerning an example of an embodiment. It is a front view showing a door part of one side among a pair of door parts concerning an example of an embodiment. It is a side view showing a door part concerning an example of an embodiment. It is a flowchart which shows the departure instruction | command operation | movement of the car concerning the example of embodiment. The door unit concerning the example of embodiment is shown, and it is a front view which shows the state which the clearance gap produced | generated at the lower end part side of the door part. The door unit concerning the example of an embodiment is shown, and it is a front view showing the state where the crevice generated in the upper end side of a door part. It is a flow chart which shows failure sign diagnostic operation of a door unit concerning an example of an embodiment. It is a front view which shows the building side door unit provided in the building structure side concerning the example of an embodiment.

  Hereinafter, the elevator according to the embodiment will be described with reference to FIGS. 1 to 9. In addition, the same code | symbol is attached | subjected to the member common in each figure.

1. Embodiment Example 1-1. Configuration of Elevator First, the configuration of an elevator according to the embodiment (hereinafter, referred to as “this example”) will be described with reference to FIG.
FIG. 1 is a schematic configuration view showing a configuration example of the elevator of this embodiment.

  As shown in FIG. 1, the elevator 1 of this example is a so-called machine room-less elevator that does not have a machine room above a hoistway 100 formed in a building structure. In addition, although the example using a machine room less elevator is demonstrated in the elevator 1 of this example, it is not limited to this, You may be an elevator which has a machine room above the hoistway 100. FIG.

  The elevator 1 includes a car 110 moving up and down the hoistway 100, a hoist 120, a counterweight 130, a first driven pulley 140, a second driven pulley 150, a rope 170, and elevator control. It has a device 60 (see FIG. 4).

  At the lower part of the car 110, a lifting pulley 111 is provided. A rope 170 is wound around the lifting pulley 111. The detailed description of the car 110 will be described later.

  A weight-side pulley 131 is provided on the upper side of the counterweight 130. A rope 170 is wound around the weight-side pulley 131. The hoisting machine 120 is disposed at the lowermost part of the hoistway 100, and lifts and lowers the car 110 and the counterweight 130 via a rope 170 in a pick-up manner. The drive of the hoist 120 is controlled by the controller.

  The first driven pulley 140 and the second driven pulley 150 are fixed to the top of the hoistway 100. One end 171 and the other end 172 of the rope 170 are fixed to the top of the hoistway 100. The rope 170 is mounted on the first driven pulley 140 from the weight-side pulley 131 provided on the counterweight 130, and the hoisting machine 120, the second driven pulley 150, and the lifting pulley 111 of the car 110. In the order of

  As the hoisting machine 120 is driven, the car 110 and the counterweight 130 move up and down in the hoistway 100. Hereinafter, the direction in which the car 110 and the counterweight 130 move up and down is referred to as the vertical direction.

  The car 110 has a cab 10 in which people and things get on and off, and a door unit 12. The door unit 12 is configured by a pair of door portions 11A and 11B. An opening is provided on one surface of the car compartment 10, and a person or a thing goes in and out from this opening. The pair of door portions 11A and 11B is provided so as to be able to open and close in the car chamber 10 so as to cover the opening of the car chamber 10.

FIG. 2 is a front view showing the door unit 12 provided in the car 110. As shown in FIG.
As shown in FIG. 2, the pair of door portions 11A and 11B is supported by the door pocket 13 provided in the car compartment 10 and the door sill 14 so as to be movable in the opening and closing direction. The door pocket 13 is provided at the upper end in the vertical direction of the opening of the car compartment 10, and the door sill 14 is provided at the lower end of the opening.

  A first door hanger 17A is provided at the upper end 11a of the first door 11A in the vertical direction, and a second door hanger 17B is provided at the upper end 11a of the second door 11B. There is.

  Moving rollers 25 are rotatably provided on the first door hanger 17A and the second door hanger 17B, respectively. The moving roller 25 slidably engages with a door rail 16 described later.

  The first door hanger 17A is provided with a first connecting member 26 and an upper switch pressing member 31. The first connecting member 26 protrudes upward from the upper end portion of the first door hanger 17A. The second connecting member 27 is provided on the second door hanger 17B. The second connection member 27 protrudes upward from the upper end portion of the second door hanger 17B. The first connecting member 26 and the second connecting member 27 are connected to a transmission belt 22 described later.

  A slider 18 slidably inserted in a guide groove provided in the doacyl 14 is provided at the lower end portion 11b of the first door portion 11A and the second door portion 11B in the vertical direction. In addition, a lower switch pressing member 32, which will be described later, is provided at the lower end portion 11b of the first door portion 11A. Further, a lower detection switch 50 is provided on the side of the first door 11A in the doacyl 14.

  The door pocket 13 is provided with a door rail 16, a drive unit 21, a transmission belt 22, a driven roller 23, and an upper detection switch 40. The door rail 16 is disposed to extend in the door pocket 13 in parallel with the horizontal direction. Moving rollers 25 provided on the door hangers 17A and 17B slidably engage with the door rail 16.

  The drive unit 21 is disposed at one end side in the horizontal direction of the door pocket 13, and the driven roller 23 is disposed at the other end side of the door pocket 13 in the horizontal direction. The transmission belt 22 is wound around the drive shaft of the drive unit 21 and the driven roller 23.

  The transfer belt 22 is formed in an endless shape in which both longitudinal ends are connected. When the drive unit 21 is driven, the transmission belt 22 circulates between the driven roller 23 and the drive shaft of the drive unit 21. At this time, lower and upper portions in the vertical direction of the transfer belt 22 move in opposite directions to each other.

  The first connecting member 26 of the first door portion 11A is connected to the lower part of the transfer belt 22, and the second connecting member 27 is connected to the upper part of the transfer belt 22. Therefore, when the drive unit 21 is driven to move the transmission belt 22, the pair of door units 11A and 11B moves in the door closing direction approaching each other or the door opening direction separating each other via the connecting members 26 and 27.

FIG. 3 is a front view showing the first door portion 11A, and FIG. 4 is a side view showing the first door portion 11A.
As shown in FIGS. 3 and 4, the upper switch pressing member 31 has an upper support bracket 33 and an upper cam switch piece 34. The upper support bracket 33 protrudes upward from the upper end of the first door hanger 17A. The upper end portion of the upper support bracket 33 in the vertical direction is disposed above the door rail 16 in the vertical direction. An upper cam switch piece 34 is provided at the upper end portion of the upper support bracket 33.

  The upper cam switch piece 34 protrudes from the upper support bracket 33 toward the door pocket 13. The upper cam switch piece 34 is supported by the upper support bracket 33 and is disposed opposite to the door rail 16 above the door rail 16 in the vertical direction. The upper cam switch piece 34 is formed substantially in a flat plate shape. The upper cam switch piece 34 is disposed substantially parallel to the horizontal direction at the upper end portion of the upper support bracket 33.

  Further, an inclined surface portion 34 a is formed at one end of the upper cam switch piece 34 on the door closing direction side of the first door portion 11 </ b> A. The inclined surface portion 34a is inclined downward in the vertical direction as it goes from the one end portion of the upper cam switch piece 34 to the door closing direction side of the first door portion 11A. The upper cam switch piece 34 is an upper detection switch 40 described later when the first door portion 11A and the second door portion 11B move to a closed position T1 (hereinafter referred to as "closed end position") covering the opening. Contact

  The upper detection switch 40 has an upper switch body 41 and an upper switch bracket 42. The upper switch bracket 42 is fixed above the door rail 16 in the door pocket 13 in the vertical direction. An upper switch body 41 is fixed to the upper switch bracket 42.

  The upper switch body 41 is provided with a contact roller 41 a. The contact roller 41 a is provided at the lower end of the upper switch body 41 in the vertical direction. When the first door portion 11A moves to the closed end position T1, the contact roller 41a faces the upper cam switch piece 34. Then, the contact roller 41 a is pressed upward in the vertical direction by coming into contact with the inclined surface portion 34 a of the upper cam switch piece 34. The contact roller 41 a then contacts the horizontal portion of the upper cam switch piece 34. Thereby, the upper switch body 41 is turned on. Then, the upper detection switch 40 outputs an upper door close detection signal to the elevator control device 60.

  Further, by providing the inclined surface portion 34 a on the upper cam switch piece 34 and providing the contact roller 41 a on the upper switch main body 41, it is possible to reduce the impact force when the upper cam switch piece 34 contacts the upper switch main body 41. it can. As a result, when the upper switch main body 41 contacts the upper cam switch piece 34, not only damage to the upper switch main body 41 can be prevented, but also abnormal noise generated at the time of contact can be suppressed.

  The lower switch pressing member 32 has a lower support bracket 35 and a lower cam switch piece 36. The lower support bracket 35 is fixed to the lower end portion 11b of the first door portion 11A, and protrudes downward in the vertical direction from the lower end portion 11b. The lower end portion of the lower support bracket 35 in the up-down direction is disposed below the doacyl 14 in the up-down direction. A lower cam switch piece 36 is provided at the lower end of the lower support bracket 35.

  The lower cam switch piece 36 protrudes from the lower end portion of the lower support bracket 35 downward in the vertical direction of the doacyl 14. The lower cam switch piece 36 is supported by the lower support bracket 35 and arranged to face the doacyl 14 in the lower direction of the doacyl 14 in the vertical direction. The lower cam switch piece 36 is formed substantially in a flat plate shape. The lower cam switch piece 36 is disposed substantially parallel to the horizontal direction at the lower end portion of the lower support bracket 35.

  Further, an inclined surface 36a is formed at one end of the lower cam switch piece 36 in the door closing direction of the first door 11A. The inclined surface portion 36a is inclined downward in the vertical direction as it goes from the one end portion of the lower cam switch piece 36 to the door closing direction side of the first door portion 11A. The lower cam switch piece 36 contacts a lower detection switch 50 described later when the first door portion 11A moves to the closed end position T1.

  The lower detection switch 50 has a lower switch main body 51 and a lower switch bracket 52. The lower switch bracket 52 is fixed to the lower end portion of the doacyl 14 in the vertical direction. The lower switch bracket 52 projects downward from the lower end of the doacyl 14 in the vertical direction. The lower switch body 51 is fixed to the lower switch bracket 52.

  The lower switch body 51 is provided with a contact roller 51 a. The contact roller 51 a is provided at the lower end of the lower switch body 51 in the vertical direction. When the first door portion 11A moves to the closed end position T1, the contact roller 51a faces the lower cam switch piece 36. Then, when the contact roller 51a contacts and presses the lower cam switch piece 36, the lower switch main body 51 is turned ON. Then, the lower part detection switch 50 outputs a lower door close detection signal to the elevator control device 60.

1-2. Control System of Elevator Next, a configuration of a control system of the elevator 1 having the above-described configuration will be described with reference to FIG.
As shown in FIG. 4, the elevator 1 has an elevator control device 60 showing an example of a control unit. The elevator control device 60 controls the drive of each component such as the drive unit 21 that opens and closes the hoisting machine 120 (see FIG. 1) and the door units 11A and 11B. Further, the elevator control device 60 has a departure condition determination unit 61 and a failure sign diagnosis unit 62.

  The departure condition determination unit 61 and the failure sign diagnosis unit 62 are connected to the upper detection switch 40 and the lower detection switch 50 by wireless or wire. The departure condition determination unit 61 determines whether the elevator car 110 is moved up and down based on the upper door closing detection signal and the lower door closing detection signal output from the upper detection switch 40 and the lower detection switch 50, that is, the elevator car 110 It is determined whether or not to leave. The departure condition determination unit 61 outputs a departure instruction to the elevator control device 60 when it is determined that the car 110 can leave. Then, the elevator control device 60 drives the hoisting machine 120 (see FIG. 1) based on the departure command output from the departure condition determination unit 61 to move the elevator car 110 up and down.

  The failure sign diagnosing unit 62 diagnoses a failure sign of the door portions 11A and 11B based on the upper door closing detection signal and the lower door closing detection signal. The failure sign diagnosing unit 62 is provided with a storage unit 63. The storage unit 63 stores a first timer, a second timer, a first threshold, and a second threshold. The first timer measures and stores the time from when the upper detection switch 40 outputs the upper door close detection signal to when the lower detection switch 50 outputs the lower door close detection signal. The second timer measures and stores the time from when the lower detection switch 50 outputs the lower door close detection signal until the upper detection switch 40 outputs the upper door close detection signal.

  The failure sign diagnostic unit 62 diagnoses a sign of failure of the door unit 12 based on the time stored in the first timer and the value of the first threshold, and the time stored in the second timer and the value of the second threshold. . Further, the failure sign diagnostic unit 62 has a communication unit (not shown) that outputs the diagnosis result to an external management center or the elevator control device 60.

2. Next, an example of the departure instruction operation of the car 110 in the elevator 1 having the above-described configuration will be described with reference to FIGS. 5 to 7.
FIG. 5 is a flow chart showing an example of the departure instruction operation of the car 110. 6 is a front view showing a state in which a gap is generated on the lower end side of the door portion, and FIG. 7 is a front view showing a state in which a gap is generated on the upper end portion side of the door portion.

  As shown in FIG. 5, when a user operates the operation button provided on the car 110 or when a predetermined time has elapsed from when the pair of door portions 11A and 11B are open, the elevator control device 60 issues a door closing command. Are output (step S11). When the door closing command is output in the process of step S11, the drive unit 21 is driven to move the pair of door units 11A and 11B in the door closing direction in which they approach each other.

  Next, when a predetermined time has elapsed, the departure condition determination unit 61 determines whether the upper detection switch 40 is turned on (step S12). That is, the first door portion 11A moves in the door closing direction, and the upper cam switch piece 34 of the upper switch pressing member 31 presses the contact roller 41a of the upper detection switch 40, and the upper door closing detection from the upper detection switch 40 It is determined whether a signal has been output.

  If it is not determined that the upper detection switch 40 is turned on even after the predetermined time has elapsed in the process of step S12 (NO determination in step S12), the departure condition determination unit 61 instructs the door open command to open the pair of door portions 11A and 11B. Are output (step S14). That is, in other words, the departure condition determination unit 61 determines that a gap is generated in the upper end portions 11a of the pair of door portions 11A and 11B. Then, the departure condition determination unit 61 temporarily opens the pair of door portions 11A and 11B.

  In the process of step S11 again, when the door closing command is output, the elevator control device 60 drives the drive unit 21 to move the pair of door units 11A and 11B in the door closing direction in which they approach each other.

  In the process of step S12, when departure condition determination unit 61 receives the upper door closing detection signal from upper detection switch 40 and determines that upper detection switch 40 is turned on (YES in step S12), the departure condition determination unit 61 determines whether the lower detection switch 50 is turned on (step S13). That is, it is determined whether the lower cam switch piece 36 of the lower switch pressing member 32 presses the contact roller 51 a of the lower detection switch 50 and the lower door detection signal is output from the lower detection switch 50.

  If it is not determined that the lower detection switch 50 is turned on (NO in step S13) even if a predetermined time has elapsed in the process of step S13, the departure condition determination unit 61 opens the door 11A or 11B. The command is output (step S14). That is, the departure condition determination unit 61 determines that a gap is generated in the lower end portions 11b of the pair of door portions 11A and 11B. Then, the departure condition determination unit 61 temporarily opens the pair of door portions 11A and 11B.

  In the process of step S13, departure condition determination unit 61 receives a lower door closing detection signal from lower detection switch 50, and when it is determined that lower detection switch 50 is turned on (YES determination of step S13), a departure instruction of the car is given. Are output (step S15).

  Here, when dust or dirt accumulates in the guide groove on the side of the doacyl 14 due to use over time, as shown in FIG. 6, the door closing operation is performed in a state where the lower end portion 11b of the door portion 11A is inclined. Therefore, the gap S1 between the lower end portions 11b of the pair of door portions 11A and 11B is closed in a so-called "C" shape in which the gap S1 is larger than the upper end portion 11a. In this state, the upper detection switch 40 is pressed by the upper cam switch piece 34 to be turned ON, but the contact roller 51 a of the lower detection switch 50 does not contact the lower cam switch piece 36, and the lower detection switch 50 is Is not pressed.

  Further, when dust or dirt accumulates on the door rail 16 side due to use over time, the door closing operation is performed with the upper end portion 11a of the door portion 11A inclined as shown in FIG. Therefore, the gap S2 between the upper end portions 11a of the pair of door portions 11A and 11B inclines in a so-called reverse V shape, which is larger than the lower end portion 11b, and is closed. In this state, the lower detection switch 50 is pressed by the lower cam switch piece 36 and turned ON, but the contact roller 41a of the upper detection switch 40 does not contact the upper cam switch piece 34, and the upper detection switch 40 Is not pressed.

  On the other hand, according to the elevator 1 of the present embodiment, when both the upper detection switch 40 and the lower detection switch 50 are turned on and both the upper door closing detection signal and the lower door closing detection signal are output The cage 110 can move up and down. Thereby, as shown in FIG. 6 and FIG. 7, even when the pair of door portions 11A and 11B is closed in a state of being inclined in a V-shape or a reverse V-shape, the elevator control device 60 is considered to be normal if the door unit 12 is normal. Can prevent false detection. As a result, it is possible to prevent the elevator car 110 from moving up and down with the clearances S1 and S2 generated in the upper end 11a and the lower end 11b of the pair of door portions 11A and 11B.

  When one of the upper door closing detection signal and the lower door closing detection signal is not output even after the predetermined time has elapsed, the departure condition determination unit 61 determines that the door closing operation of the door unit 12 is abnormal. It judges that there is, and makes a pair of door parts 11A and 11B open. As a result, foreign matter caught between the upper end 11a and the lower end 11b of the pair of door portions 11A and 11B and dust and dirt accumulated on the door sill 14 and the door rail 16 can be removed.

3. Failure Predictive Diagnosis Operation Next, an example of the failure predictive diagnosis operation of the door unit 12 in the elevator 1 having the configuration described with reference to FIG. 8 will be described.
FIG. 8 is a flowchart showing the failure sign diagnosis operation.

  As shown in FIG. 8, the elevator control device 60 closes the door when the operation button provided on the car 110 is operated by a person first, or when the pair of door portions 11A and 11B has passed a predetermined time from the door opening state. The command is output (step S21). Next, the failure sign diagnosing unit 62 determines whether the upper detection switch 40 is turned on (step S22). That is, the failure sign diagnosing unit 62 determines whether the upper door closing detection signal is output from the upper detection switch 40 or not.

  In the process of step S22, when the failure sign diagnosing unit 62 receives the upper door closing detection signal from the upper detecting switch 40 and determines that the upper detecting switch 40 is turned on (YES in step S22), the first timer is used. The measurement of time is started (step S23). Next, the failure sign diagnosing unit 62 determines whether the lower detection switch 50 is turned on (step S24). That is, the failure sign diagnosing unit 62 determines whether the lower door closing detection signal is output from the lower detection switch 50 or not.

  Then, in the process of step S24, the failure sign diagnostic unit 62 receives the lower door closing detection signal from the lower detection switch 50, and determines that the lower detection switch 50 is turned on (YES in step S24), the first The measurement of the time by the timer is stopped (step S25). That is, the failure sign diagnostic unit 62 measures the time from when the upper detection switch 40 outputs the upper door close detection signal to when the lower detection switch 50 outputs the lower door close detection signal by the first timer.

  Next, the failure sign diagnostic unit 62 stores the time measured by the first timer in the storage unit 63 (step S26). Then, the failure sign diagnosing unit 62 determines whether the time measured by the first timer exceeds the first threshold (step S27).

  In the process of step S27, when the failure sign diagnosing unit 62 determines that the time measured by the first timer exceeds the first threshold (YES in step S27), it is possible to use a letter C failure sign in an external management center or It outputs to the elevator control device 60 (step S28). Then, the elevator control device 60 performs the normal operation (step S40). As a result, the failure sign diagnostic unit 62 prevents the occurrence of a so-called C-shaped failure in which the gap S1 between the lower end portions 11b of the pair of door portions 11A and 11B becomes larger than the upper end portion 11a as shown in FIG. Can be prevented.

  Further, in the process of step S27, when the failure sign diagnosing unit 62 determines that the time measured by the first timer does not exceed the first threshold (NO in step S27), as shown in FIG. It is determined that no letter failure has occurred. Then, the elevator control device 60 performs the normal operation (step S40).

  Further, in step S22, when the failure sign diagnostic unit 62 determines that the upper detection switch 40 is not turned on (NO in step S22), it determines whether the lower detection switch 50 is turned on (step S31). ). If it is determined in the process of step S31 that the lower detection switch 50 is not turned on, the failure sign diagnosing unit 62 returns to the process of step S22.

  In the process of step S31, the failure sign diagnosing unit 62 receives the lower door closing detection signal from the lower detection switch 50 and determines that the lower detection switch 50 is turned on (YES in step S31), the second The measurement of time by the timer is started (step S32). Next, the failure sign diagnosing unit 62 determines whether the upper detection switch 40 is turned on (step S33).

  Then, in the process of step S33, the failure sign diagnosing unit 62 receives the upper door closing detection signal from the upper detecting switch 40, and determines that the upper detecting switch 40 is turned on (YES in step S33), the second The measurement of time by the timer is stopped (step S34). That is, the failure sign diagnostic unit 62 measures the time from when the lower detection switch 50 outputs the lower door close detection signal to when the upper detection switch 40 outputs the upper door close detection signal by the second timer.

  Next, the failure sign diagnosing unit 62 stores the time measured by the second timer in the storage unit 63 (step S35). Then, the failure sign diagnosing unit 62 determines whether the time measured by the second timer exceeds the second threshold (step S36).

  In the process of step S36, when the failure sign diagnosing unit 62 determines that the time measured by the second timer exceeds the second threshold (YES judgment of step S36), a reverse failure sign is generated by an external management center. And the elevator controller 60 (step S37). Then, the elevator control device 60 performs the normal operation (step S40). As a result, the failure sign diagnostic unit 62 generates a so-called reverse C-shaped failure in which the gap S2 between the upper end portions 11a of the pair of door portions 11A and 11B becomes larger than the lower end portion 11b as shown in FIG. It can be prevented in advance.

  Furthermore, in the process of step S36, when the failure sign diagnosing unit 62 determines that the time measured by the second timer does not exceed the second threshold (NO in step S36), reverse HA as shown in FIG. It is determined that no letter failure has occurred. Then, the elevator control device 60 performs the normal operation (step S40). As a result, the failure sign diagnosis operation using the failure sign diagnosis unit 62 is completed.

  As described above, according to the elevator 1 of the present embodiment, the sign of the failure of the door unit 12 can be taken from the difference between the timing when the upper detection switch 40 and the lower detection switch 50 output the upper door closing detection signal and the lower door closing detection signal. It can be diagnosed. As a result, it is possible to clean the door sill 14 and the door rail 16 and perform maintenance work on the door unit 12 before a failure occurs in the door unit 12. Furthermore, it is possible to adjust the distance between the gaps S1 and S2 between the upper end 11a and the lower end 11b of the pair of door parts 11A and 11B.

  In the example described above, an example is described in which the failure sign diagnostic unit 62 outputs a failure sign when the time measured by the first timer or the second timer exceeds the first threshold or the second threshold. It is not limited to For example, the difference between the time when the upper closed door detection signal is output and the lower closed door detection signal is output when the pair of door portions 11A and 11B is closed at the initial stage when the elevator 1 is installed (“ The time difference ") is stored in advance in the storage unit 63. Then, the failure sign may be determined by comparing the time difference stored in advance in the storage unit 63 with the time difference after being used for a predetermined period.

  Furthermore, in the above-described example, the first and second timers are provided in the failure sign diagnosing unit 62, and the time difference between the upper detection switch 40 and the lower detection switch 50 outputting the upper door closing detection signal and the lower door closing detection signal Although the example which presupposes a failure is demonstrated from this, it is not limited to this. For example, an encoder is provided in the drive unit 21 and a failure sign is determined from the actual position of the door portion 11A when the upper detection switch 40 and the lower detection switch 50 output the upper door closing detection signal and the lower door closing detection signal. It is also good.

4. Configuration Example of Building-Side Door Unit In the above-described embodiment, the upper detection switch 40 and the lower detection switch 50 are provided on the door portions 11A and 11B of the car 110. However, the present invention is limited thereto. It is not a thing. For example, the present invention may be applied to a building side door unit that can open and close an entrance provided at each floor of a building structure.

Next, a configuration example of the building side door unit will be described with reference to FIG.
FIG. 9 is a front view showing a building side door unit.

  As shown in FIG. 9, the building side door unit 212 has a pair of door parts 211A and 211B. The pair of door portions 211A and 211B is movably supported by the door pocket 213 provided at the entrance of the building and the door sill 214. The door pocket 213 is provided at the upper end in the vertical direction of the doorway, and the door sill 214 is provided at the lower end of the doorway.

  A first door hanger 217A is provided at the upper end portion 211a in the vertical direction of the first door portion 211A, and a second door hanger 217B is provided at the upper end portion 211a in the vertical direction of the second door portion 211B. There is. Moving rollers 225 are rotatably provided on the first door hanger 217A and the second door hanger 217B, respectively. The moving roller 25 slidably engages with a door rail 216 provided in the door pocket 213.

  Further, a first connecting member 226 and an upper switch pressing member 231 are provided on the first door hanger 217A. The second door hanger 217B is provided with a second connecting member 227 and a locking hook member 271 constituting the locking mechanism 270. The locking hook member 271 is rotatably supported by the second door hanger 217B.

  A slider 218 slidably inserted in a guide groove provided in the doacyl 14 is provided at the lower end portion 211 b in the vertical direction of the first door portion 211A and the second door portion 211B. A lower switch pressing member 232 is provided at the lower end portion 211b of the first door portion 211A. Further, a lower detection switch 250 is provided on the side of the first door 11A in the doacyl 14.

  The door pocket 213 is provided with a door rail 216, a first pulley 221, a transmission belt 222, a second pulley 223, a fixed hook member 272, and an upper detection switch 240.

  The first pulley 221 is disposed at one end of the door pocket 213 in the horizontal direction, and the second pulley 223 is disposed at the other end of the door pocket 213 in the horizontal direction. A transmission belt 222 formed endlessly is wound around the first pulley 221 and the second pulley 223. The transmission belt 222 is connected to a first connection member 226 and a second connection member 227.

  The fixing hook member 272 is fixed to the door pocket 213. The fixing hook member 272 releasably engages with the locking hook member 271. The locking hook member 271 and the fixing hook member 272 constitute a locking mechanism 270.

  The upper switch pressing member 231 has an upper support bracket 233 and an upper cam switch piece 234. The configurations of the upper support bracket 233 and the upper cam switch piece 234 are the same as those of the upper support bracket 33 and the upper cam switch piece 34 provided on the car 110, and thus the description thereof will be omitted.

  The upper detection switch 240 has an upper switch body 241 and an upper switch bracket 242. The upper switch main body 241 has a contact roller 241a that contacts the upper cam switch piece 234 when the first door portion 211A moves to the closed end position. The other configuration is the same as that of the upper detection switch 40 provided in the car 110, and thus the description thereof will be omitted.

  The lower switch pressing member 232 has a lower support bracket 235 and a lower cam switch piece 236. The configurations of the lower support bracket 235 and the lower cam switch piece 236 are the same as those of the lower support bracket 35 and the lower cam switch piece 36 provided on the car 110, and thus the description thereof is omitted.

  The lower detection switch 250 has a lower switch main body 251 and a lower switch bracket 252. The lower switch main body 251 has a contact roller 251a that contacts the lower cam switch piece 236 when the first door portion 211A moves to the closed end position. The other configuration is the same as that of the lower detection switch 50 provided in the car 110, so the description thereof will be omitted.

  Further, when the contact roller 241 a contacts the upper cam switch piece 234 and is pressed, the upper switch main body 241 is turned ON. Then, the upper detection switch 240 outputs an upper door close detection signal to the elevator control device 60 (see FIG. 4). In the lower detection switch 250, when the contact roller 251a contacts the lower cam switch piece 236 and is pressed, the lower switch main body 251 is turned on. Then, the lower detection switch 250 outputs a lower door close detection signal to the elevator control device 60 (see FIG. 4).

  The departure condition determination unit 61 of the elevator control device 60 receives an upper door closing detection signal and a lower door closing detection signal from the upper detection switch 240 and the lower detection switch 250 provided in the building side door unit 212 of each floor. The departure condition determination unit 61 detects all the detection switches of the upper detection switch 40 and the lower detection switch 50 provided in the car 110 and the upper detection switch 240 and the lower detection switch 250 provided in the building door unit 212 of each floor. When it receives a door-closing detection signal from the control unit, it outputs a car departure instruction.

  Accordingly, the elevator car 110 can be prevented from moving up and down in a state where a gap is generated not only in the car cage 110 but also in the upper end portion 211a and the lower end portion 211b of the door portions 211A and 211B provided in the building structure. . As a result, it is possible to prevent foreign matter from entering the hoistway 100 from the gap into the upper end portion 211a and the lower end portion 211b of the door portions 211A and 211B provided in the building structure and preventing interference with the elevator car 110 moving up and down. it can.

  Further, the failure sign diagnostic unit 62 receives the door closure detection signal individually from the upper detection switch 240 and the lower detection switch 250 provided in the building side door unit 212 of each floor, and thereby the state of the building side door unit 212 of each floor Can be individually diagnosed.

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

  Although the example of opening and closing the opening of the car room has been described in the above-described embodiment as the pair of door parts approach and separate from each other, the present invention is not limited thereto, and one door part moves. Therefore, the opening of the cab may be opened and closed.

  Further, the detection switch is not limited to the detection switch having the contact roller described above, and the switch pressing member for pressing the detection switch is not limited to the cam switch piece having the inclined surface portion described above. Various other structures can be applied as long as the detection switch can be turned ON when the door portion moves to the closed end position T1.

  Moreover, although the example which applied the mechanical detection switch which detects that the door part moved to the closed end position T1 when pressed by the switch pressing member was demonstrated, it is not limited to this. As a detection switch, you may apply the optical detection switch which consists of the light emission part which irradiates light, and the light-receiving part which light-receives the light irradiated from the light emission part. And when a door part moves to closed end position T1, you may provide the shielding board which shields the light from a light emission part in a door part. Thus, as the detection switch, in addition to the mechanical type and the optical type, an infrared sensor and various other detection switches can be applied.

  In the present specification, words such as "parallel" and "orthogonal" are used, but they do not mean only strictly "parallel" and "orthogonal" but include "parallel" and "orthogonal". Furthermore, it may be in a state of “substantially parallel” or “substantially orthogonal” within a range where the function can be exhibited.

  DESCRIPTION OF SYMBOLS 1 ... Elevator, 10 ... Basket room, 11A, 11B ... Door part, 11a ... Upper end part, 11b ... Lower end part, 12 ... Door unit, 13 ... Door pocket, 14 ... Doacyl, 16 ... Door rail, 17A, 17B ... Door hanger , 21: drive unit, 31: upper switch pressing member, 32: lower switch pressing member, 33: upper support bracket, 34: upper cam switch piece, 34a, 36a, inclined surface portion, 35: lower support bracket, 36: lower cam Switch piece, 40: Upper detection switch, 41: Upper switch body, 41a, 51a: Contact roller, 42: Upper switch bracket, 50: Lower detection switch, 51: Lower switch body, 52: Lower switch bracket, 60: Elevator control Device (control unit) 61 ... Determination of departure conditions Unit (control unit) 62: Failure indication diagnostic unit 63: Storage unit 100: Shaft 110: Car 110: Winding machine 130: Balance weight 170: Rope 170: Building side door unit , S1, S1 ... gap, T1 ... closed end position

Claims (7)

The elevator that moves up and down the hoistway provided to the building structure,
A door which covers the opening of the car or the entrance provided on each floor of the building structure so as to open and close;
An upper door closing detection signal when it is detected that the door portion has moved to a closed end position which is a closed position where the door portion covers the opening or the entrance at the upper end in the vertical direction of the door portion An upper detection switch that outputs
A lower detection switch for outputting a lower door closing detection signal when it is detected that the door portion has moved to the closed end position at a lower end portion in the vertical direction of the door portion;
A control unit that determines whether to move the car up and down based on the upper door closing detection signal and the lower door closing detection signal;
When the control unit receives both the upper door closing detection signal and the lower door closing detection signal, the control unit determines that the elevator car can move up and down. The control unit
When the door closing command for closing the door unit is output and one of the upper door closing detection signal and the lower door closing detection signal is not received even after a predetermined time has elapsed, the door unit is opened. An elevator according to Item 1. The control unit
The elevator according to claim 1, further comprising a failure sign diagnostic unit that diagnoses a sign of failure of the door section based on the upper door closed detection signal and the lower door closed detection signal. The failure sign diagnosing unit
Based on the timing at which the upper door closing detection signal is output from the upper detection switch and the timing at which the lower door closing detection signal is output from the lower detection switch, a sign of failure of the door portion is diagnosed. The elevator described in. The failure sign diagnosing unit
The time from when the upper door closing detection signal is output from the upper detection switch to when the lower door closing detection signal is output from the lower detection switch, and the lower door closing detection signal is output from the lower detection switch The elevator according to claim 4, further comprising: a storage unit that stores a time from when the upper door closed detection signal is output from the upper door detection switch. The upper detection switch and the lower detection switch are provided in all the door portions among the door portions provided in the car and the door portions provided at the entrance and exit of each floor of the building structure,
The control unit is configured to receive the upper door close detection signal output from the upper detection switch provided in all the door portions and the lower door close detection signal output from the lower detection switch. The elevator according to claim 1, wherein it is determined that the elevator car can be moved up and down. A door pocket provided with a guide rail which is provided at the upper end of the opening or the entrance in the vertical direction and supports the door movably in the opening and closing direction;
And a door provided at the lower end of the opening or the door in the vertical direction, and supporting the door movably in the opening and closing direction.
The upper detection switch is
An upper switch bracket fixed to the door pocket;
An upper switch body fixed to the upper switch bracket;
The lower detection switch is
A lower switch bracket fixed to said doacyl;
And a lower switch body fixed to the lower switch bracket,
An upper pressing member for pressing the upper detection switch at the closed end position is provided at the upper end portion in the vertical direction of the door portion;
A lower pressing member for pressing the lower detection switch at the closed end position is provided at the lower end portion of the door portion in the vertical direction,
The upper pressing member is
An upper support bracket fixed to the upper end of the door;
An upper cam switch piece fixed to the upper support bracket and pressing a contact roller provided on the upper switch body;
The lower pressing member is
A lower support bracket fixed to the lower end of the door;
A lower cam switch piece fixed to the lower support bracket and pressing a contact roller provided on the lower switch main body;
The upper cam switch piece and an end portion on the door closing direction side in the closing direction of the door portion in the cam switch piece are inclined downward toward the door closing direction toward the door closing direction. The elevator according to claim 1, wherein a surface portion is formed.

Images